SPEAKER AND ELECTRONIC DEVICE

Abstract

 This application provides a speaker and an electronic device. The speaker includes a frame, a magnetic system, a spider, a voice coil, a surround, and a diaphragm. The spider is fastened to the diaphragm and a bottom wall of the frame, so that the spider may be disposed close to the bottom wall of a frame body to a large extent. In addition, the spider is disposed around the magnetic system, so that in a Z-axis direction, the spider and the magnetic system have an overlapped area. In this way, a thickness of the speaker in the Z-axis direction can omit a thickness of the spider, so that the thickness of the speaker in the Z-axis direction can be reduced to a large extent. This helps thinning of the speaker. When the speaker is used in the electronic device, the electronic device is thin.

Description

[0001] This application claims priority to Chinese Patent Application No. 202110282009.6, filed with the China National Intellectual Property Administration on March 16, 2021 and entitled "SPEAKER AND ELECTRONIC DEVICE", and claims priority to Chinese Patent Application No. 202110865861.6, filed with the China National Intellectual Property Administration on July 29, 2021 and entitled "SPEAKER AND ELECTRONIC DEVICE", which are incorporated herein by reference in their entireties.

TECHNICAL FIELD

[0002] This application relates to the field of electroacoustic technologies, and in particular, to a speaker and an electronic device.

BACKGROUND

[0003] Nowadays, electronic products (such as sound boxes, televisions, and computers) have thinning requirements. A speaker used as a sound-making component in an electronic product also needs to have a thin form accordingly. However, currently, a commonly used speaker is large in height, and cannot well meet a thinning requirement of the speaker.

SUMMARY

[0004] This application provides a speaker with a small thickness, and an electronic device.

[0005] According to a first aspect, this application provides a speaker. The speaker includes a frame, a magnetic system, a spider, a voice coil, a surround, and a diaphragm. The frame includes a side wall and a bottom wall. The side wall of the frame is fastened to a periphery of the bottom wall of the frame. The side wall and the bottom wall of the frame enclose an accommodating groove. At least a part of the magnetic system is located in the accommodating groove. The magnetic system is fastened to the bottom wall of the frame. An outer periphery of the surround is fastened to the side wall of the frame. An outer periphery of the diaphragm is fastened to an inner periphery of the surround. At least a part of the voice coil is located in the accommodating groove. One end of the voice coil is fastened to the diaphragm, and the other end of the voice coil is located in a magnetic gap of the magnetic system. The spider is located in the accommodating groove. In addition, the spider is disposed around the magnetic system. The spider is fastened to the bottom wall of the frame and the diaphragm.

[0006] In this implementation, the spider is fastened to the diaphragm and the bottom wall of the frame, so that the spider may be disposed close to the bottom wall of the frame body to a large extent. In this case, a distance between the diaphragm and the bottom wall of the frame body can also be reduced to a large extent. A thickness of the speaker in a Z-axis direction can be reduced to a large extent. This helps thinning of the speaker. The spider is disposed around the magnetic system, so that in the Z-axis direction, the spider and the magnetic system have an overlapped area. In other words, in the Z-axis direction, the thickness of the speaker no longer includes a thickness of the spider. In this way, the thickness of the speaker in the Z-axis direction is reduced to a large extent. This helps thinning of the speaker.

[0007] It may be understood that the spider is fastened to the diaphragm and the bottom wall of the frame body, so that when the voice coil drives the diaphragm to vibrate in the Z-axis direction, the spider may apply an action force in the Z-axis direction to the diaphragm. This prevents the voice coil and the diaphragm from moving along an X-Y plane, that is, prevents the voice coil and the diaphragm from swinging left or right.

[0008] In addition, compared with a conventional damper structure, a spider structure is used in this implementation. Because a surface flatness of the spider is high, a space occupied by the spider is small. In this case, space utilization of the speaker is high. In addition, the spider is unlikely to collide with the voice coil. In this way, sound made by the speaker is unlikely to generate abnormal sound, and therefore, the sound made by the speaker is unlikely to be distorted.

[0009] In addition, because a structure of the conventional damper is wave-shaped, the damper deforms more. When the speaker makes sound, nonlinear distortion is large. However, in this implementation, the spider is used. The spider has no obvious deformation because of a high structural flatness. When the speaker makes sound, the nonlinear distortion is small, that is, the speaker has better linearity.

[0010] In addition, when the surround is fastened to the frame, the voice coil drives the diaphragm to vibrate in the Z-axis direction. The surround may apply an action force to the diaphragm, to prevent the voice coil and the diaphragm from moving along the X-Y plane, that is, to prevent the voice coil and the diaphragm from swinging left or right.

[0011] In a possible implementation, the magnetic system includes four magnetic components disposed at intervals. There are four voice coils. Other end parts of the four voice coils are located in the magnetic gaps of the four magnetic components in a one-to-one correspondence. The spider is provided with four avoidance spaces disposed at intervals. The four magnetic components pass through the four avoidance spaces in the one-to-one correspondence.

[0012] It may be understood that, when the thickness of the speaker in the Z-axis direction is reduced to a large extent, a distance between the magnetic system and the diaphragm is small, and a vibration space of the diaphragm is small. In this case, it is difficult for the speaker to make loud sound, that is, it is difficult for the speaker to emit an accent. In this implementation, the magnetic system including four magnetic components and a voice coil system including four voice coils are used. In this way, an area of a connection between the voice coil system and the diaphragm is large. When the voice coil moves in the Z-axis direction in a magnetic field environment in the magnetic gap, the voice coil has a large driving force, to drive the diaphragm to vibrate in the Z-axis direction. In this way, the speaker has an enough loudness to ensure replay effect. In particular, when a frequency of the sound is a low frequency, the speaker still has enough loudness to ensure the replay effect.

[0013] In addition, when the voice coil has a large driving force, an amplitude of the diaphragm is large. If a conventional damper structure is used, because the conventional damper structure occupies a large space, the conventional damper structure is likely to collide with the voice coil. In this case, sound made by the speaker generates abnormal sound, and the sound made by the speaker is likely to be distorted. In this implementation, a spider structure is used. Because a surface flatness of the spider is high, a space occupied by the spider is small. In this case, space utilization of the speaker is high. In addition, the spider is unlikely to collide with the voice coil. In this way, sound made by the speaker is unlikely to generate abnormal sound, and therefore, the sound made by the speaker is unlikely to be distorted.

[0014] In a possible implementation, the spider is made of a copper foil or stainless steel. In this way, a hardness of the spider is high. It may be understood that when the voice coil has a large driving force, an amplitude of the diaphragm is large. In this case, because the hardness of the spider is high, the spider can still apply an action force in the Z axis direction to the diaphragm, to prevent the voice coil and diaphragm from moving along the X-Y plane, that is, to prevent the voice coil and diaphragm from swinging left or right.

[0015] In a possible implementation, the spider includes a first segment, a second segment, a third segment, and a fourth segment. The first segment, the second segment, the third segment, and the fourth segment are all curved. A first end part of the first segment, a first end part of the second segment, a first end part of the third segment, and a first end part of the fourth segment are jointly connected. A second end part of the first segment and the second segment are disposed at an interval. The first segment and the second segment enclose a first avoidance space. A second end part of the second segment and the third segment are disposed at an interval. The second segment and the third segment enclose a second avoidance space. A second end part of the third segment and the fourth segment are disposed at an interval. The third segment and the fourth segment enclose a third avoidance space. A second end part of the fourth segment and the first segment are disposed at an interval. The fourth segment and the first segment enclose a fourth avoidance space.

[0016] It may be understood that the spider in this implementation has good flexibility, and can adapt to large vibration of the diaphragm. In addition, in a process of moving the first segment, the second segment, the third segment, and the fourth segment of the spider in the Z-axis direction, interference between the first segment, the second segment, the third segment, and the fourth segment is small.

[0017] In a possible implementation, the first end part of the first segment, the first end part of the second segment, the first end part of the third segment, and the first end part of the fourth segment are all fastened to the bottom wall of the frame. The second end part of the first segment, the second end part of the second segment, the second end part of the third segment, and the second end part of the fourth segment are all fastened to the diaphragm. In this way, the middle of the spider is fastened to the bottom wall of the frame, and a periphery of the spider is fastened to the diaphragm. When the spider moves in the Z axis direction, the action force applied by the spider to the diaphragm is balanced. This prevents the voice coil and diaphragm from moving along the X-Y plane, that is, prevents the voice coil and diaphragm from swinging left or right.

[0018] In a possible implementation, the first end part of the first segment, the first end part of the second segment, the first end part of the third segment, and the first end part of the fourth segment are all fastened to the diaphragm. The second end part of the first segment, the second end part of the second segment, the second end part of the third segment, and the second end part of the fourth segment are all fastened to the bottom wall of the frame. In this way, the middle of the spider is fastened to the diaphragm, and the periphery of the spider is fastened to the bottom wall of the frame. When the spider moves in the Z axis direction, the action force applied by the spider to the diaphragm is balanced. This prevents the voice coil and diaphragm from moving along the X-Y plane, that is, prevents the voice coil and diaphragm from swinging left or right.

[0019] In a possible implementation, the spider includes a first surface and a second surface that are disposed back to each other. The first surface faces toward the diaphragm. The second surface faces toward the bottom wall of the frame. At least a part of the first surface is a plane, and at least a part of the second surface is a plane.

[0020] In a possible implementation, the spider includes the first segment, the second segment, the third segment, and the fourth segment. The first segment, the second segment, the third segment, and the fourth segment are all curved. The first end part of the first segment, the first end part of the second segment, the first end part of the third segment, and the first end part of the fourth segment are jointly connected. The second end part of the first segment is fastened to the second segment. The first segment and the second segment enclose the first avoidance space. The second end part of the second segment is fastened to the third segment. The second segment and the third segment enclose the second avoidance space. The second end part of the third segment is fastened to the fourth segment. The third segment and the fourth segment enclose the third avoidance space. The second end part of the fourth segment is fastened to the first segment. The fourth segment and the first segment enclose the fourth avoidance space.

[0021] In a possible implementation, the voice coil includes a first voice coil, a second voice coil, a third voice coil, and a fourth voice coil. The first voice coil and the second voice coil are disposed in series to form a first whole, the third voice coil and the fourth voice coil are disposed in series to form a second whole, and the first whole and the second whole are disposed in parallel.

[0022] In a possible implementation, the speaker further includes a first lead wire, a second lead wire, a third lead wire, and a fourth lead wire. The first lead wire electrically connects the first voice coil to the second voice coil. The second lead wire electrically connects the third voice coil to the fourth voice coil. The third lead wire electrically connects the first whole to the second whole. The fourth lead wire electrically connects the first whole to the second whole.

[0023] In a possible implementation, the diaphragm is provided with a first wire slot and a second wire slot. The first wire slot fastens the first lead wire and the second lead wire. The second wire slot fastens the third lead wire and the fourth lead wire. In this way, the first lead wire, the second lead wire, the third lead wire, and the fourth lead wire are arranged regularly inside the speaker, and are unlikely to interfere with another part.

[0024] In a possible implementation, the frame includes a first limiting part. The first limiting part includes a base and a hook part. The base is fastened to the bottom wall of the frame. The hook part is fastened to the base. The hook part and the base jointly enclose a wire space. The third lead wire passes through the wire space. In this way, the third lead wire is arranged regularly inside the speaker, and is unlikely to interfere with another part.

[0025] In a possible implementation, the magnetic component includes a yoke, a lower plate, a magnetic part, and an upper plate. The yoke includes a bottom wall and a side wall. The side wall of the yoke is fastened to a periphery of the bottom wall of the yoke. The bottom wall of the yoke and the side wall of the yoke enclose a groove. The lower plate is located in the groove, and is fastened to the bottom wall of the yoke. The lower plate and the side wall of the yoke are disposed at an interval. The magnetic part is located in the groove, and is fastened to the lower plate. The magnetic part and the side wall of the yoke are disposed at an interval. At least a part of the upper plate is located in the groove, and is fastened to the magnetic part. The upper plate and the side wall of the yoke are disposed at an interval to form the magnetic gap.

[0026] In a possible implementation, the spider is provided with a first fastening hole and a second fastening hole that are disposed at an interval. The frame includes a first limiting block. The first limiting block is fastened to the bottom wall of the frame. The diaphragm is provided with a fastening post. The first limiting block is inserted into the first fastening hole. The fastening post is inserted into the second fastening hole. In this way, a connection between the spider and the bottom wall of the frame and the diaphragm is simple, and an assembly process is simple.

[0027] In a possible implementation, the frame includes a frame body and a fastening base. The frame body includes the bottom wall of the frame and the side wall of the frame. The fastening base includes the first limiting block. The fastening base is fastened to the bottom wall of the frame body.

[0028] In a possible implementation, the fastening base further includes a second limiting block. The second limiting block and the first limiting block are disposed back to each other. The bottom wall of the frame body is further provided with a limiting hole. The second limiting block is inserted into the limiting hole. In this way, a connection between the fastening base and the frame body is more stable and firmer.

[0029] In a possible implementation, the diaphragm is provided with a fastening slot. One end part of the voice coil is inserted into the fastening slot. In this way, the connection between the voice coil and the diaphragm is simple, and the assembly process is simple.

[0030] According to a second aspect, this application provides an electronic device. The electronic device includes a box and the foregoing speaker. The speaker is mounted in the box. It may be understood that the speaker is thinned, so that when the speaker is used in the electronic device, the electronic device can also be thinned.

BRIEF DESCRIPTION OF DRAWINGS

[0031] 

FIG. 1 is a schematic diagram of a structure of an electronic device according to an embodiment of this application;

FIG. 2 is a partial schematic exploded view of the electronic device shown in FIG. 1;

FIG. 3 is a schematic diagram of a partial cross section at a line A-A of the electronic device shown in FIG. 1;

FIG. 4 is a partial schematic exploded view of a speaker shown in FIG. 2 in an implementation;

FIG. 5 is a schematic exploded view of a frame shown in FIG. 4;

FIG. 6a is a schematic diagram of a structure of a frame body shown in FIG. 5 at an angle;

FIG. 6b is a schematic diagram of a structure of the frame body shown in FIG. 5 at another angle;

FIG. 7 is a schematic exploded view of a fastener shown in FIG. 5;

FIG. 8 is a schematic diagram of a structure of a fastening base shown in FIG. 7 at another angle;

FIG. 9 is a schematic diagram of a partial structure of the frame shown in FIG. 4;

FIG. 10 is a schematic diagram of a cross section at a line B-B of the frame shown in FIG. 9;

FIG. 11 is a schematic diagram of a structure of a first limiting part shown in FIG. 5 at another angle;

FIG. 12 is a schematic diagram of a structure of the frame shown in FIG. 4 at different angles;

FIG. 13 is a schematic exploded view of a magnetic component shown in FIG. 4;

FIG. 14 is a schematic sectional view of the magnetic component shown in FIG. 4;

FIG. 15 is a schematic diagram of a partial structure of the speaker shown in FIG. 2;

FIG. 16 is a sectional view of a part of the speaker shown in FIG. 15 at a line C-C;

FIG. 17 is an enlarged schematic diagram of a spider shown in FIG. 4;

FIG. 18 is a schematic diagram of a partial structure of the speaker shown in FIG. 2;

FIG. 19 is an enlarged schematic diagram of a surround shown in FIG. 4;

FIG. 20 is a schematic diagram of a partial structure of the speaker shown in FIG. 2;

FIG. 21 is a schematic diagram of a structure of a diaphragm shown in FIG. 4 at different angles;

FIG. 22 is an enlarged schematic diagram of a voice coil shown in FIG. 4;

FIG. 23 is a schematic diagram of a partial structure of the speaker shown in FIG. 2;

FIG. 24 is a schematic sectional view of the speaker shown in FIG. 2;

FIG. 25 is a schematic diagram of a structure of a spider in another implementation according to an embodiment of this application; and

FIG. 26 is a partial schematic sectional view of a speaker in another implementation according to an embodiment of this application.

DESCRIPTION OF EMBODIMENTS

[0032] The following describes the following embodiments of this application with reference to the accompanying drawings in embodiments of this application.

[0033] In the descriptions of embodiments of this application, it should be noted that, unless otherwise specified and limited, the term "connect" should be understood in a broad sense. For example, a "connection" may be a detachable connection, or an undetachable connection; may be a direct connection, or may be an indirect connection through an intermediate medium. "Fastening" means a connection to each other and that a relative position relationship after the connection remains unchanged. Orientation terms mentioned in embodiments of this application, for example, "top", "bottom", "inside", "outside", "above", and "below" are merely directions based on the accompanying drawings. Therefore, the orientation terms are used to better and more clearly describe and understand embodiments of this application, instead of indicating or implying that a specified apparatus or element should have a specific orientation, and be constructed and operated in the specific orientation. Therefore, this cannot be understood as a limitation on embodiments of this application. "A plurality of" means at least two.

[0034] FIG. 1 is a schematic diagram of a structure of an electronic device 100 according to an embodiment of this application. The electronic device 100 may be a sound box, a television, a tablet computer, a camera, a personal computer, a notebook computer, a vehicle-mounted device, or a wearable device. The electronic device 100 in the embodiment shown in FIG. 1 is described by using a sound box as an example. For ease of description, as shown in FIG. 1, a width direction of the electronic device 100 is defined as an X axis. A length direction of the electronic device 100 is a Y axis. A thickness direction of the electronic device 100 is a Z axis. It should be noted that FIG. 1 and the following related accompanying drawings only show some components included in the electronic device 100 as an example, and actual shapes, actual sizes, actual positions, and actual structures of these components are not limited in FIG. 1 and the following accompanying drawings.

[0035] With reference to FIG. 1, FIG. 2 is a partial schematic exploded view of the electronic device 100 shown in FIG. 1. The electronic device 100 includes a box 10 and a speaker 20. The speaker 20 is mounted in the box 10. The speaker 20 may be fastened to the box 10 through adhesive dispensing, fastener fastening, or the like. The speaker 20 may be configured to receive an audio signal, and can make sound to an outside of the electronic device 100 based on the audio signal. For example, the speaker 20 may be configured to play music.

[0036] With reference to FIG. 2, FIG. 3 is a schematic diagram of a partial cross section at a line A-A of the electronic device 100 shown in FIG. 1. The box 10 includes a front plate 11, a side frame 12, and a rear plate 13. The front plate 11 and the rear plate 13 are disposed opposite to each other, and the side frame 12 is fastened between the front plate 11 and the rear plate 13. The front plate 11, the side frame 12, and the rear plate 13 enclose an accommodating space 14. The accommodating space 14 may be configured to accommodate another component of the electronic device 100.

[0037] For example, the front plate 11 is provided with a groove 111. A bottom wall of the groove 111 is provided with a connection hole 112. The connection hole 112 connects the accommodating space 14 to the outside of the box 10. In another implementation, the groove 111 and the connection hole 112 may alternatively be provided on the side frame 12 or the rear plate 13.

[0038] Refer to FIG. 3 again. The speaker 20 is fastened to the bottom wall of the groove 111, and a part of the speaker 20 is located in the accommodating space 14. A part of the speaker 20 is located in the groove 111. In another implementation, a part of the speaker 20 may alternatively be located outside the box 10.

[0039] In an implementation, the electronic device 100 further includes a power amplifier (power amplifier, PA) (not shown in the figure). The power amplifier is mounted in the accommodating space 14. One end of the power amplifier is electrically connected to a sound source device (for example, a mobile phone, a computer, or a portable computer), and the other end of the power amplifier is electrically connected to the speaker 20. When the sound source device sends an audio signal, the audio signal is transmitted to the power amplifier, and the power amplifier processes the audio signal, and transmits a processed audio signal to the speaker 20.

[0040] In this embodiment, two manners of disposing the speaker 20 are specifically described with reference to related accompanying drawings. In this embodiment, a thickness of the speaker 20 in the Z-axis direction can be effectively reduced. This helps thinning of the speaker 20, and also helps implement thinning of the electronic device 100. The following describes in detail with reference to related accompanying drawings.

[0041] First implementation: FIG. 4 is a partial schematic exploded view of the speaker 20 shown in FIG. 2 in an implementation. The speaker 20 includes a frame 21, a magnetic system 22, a spider 23, a voice coil system 24, a surround 25, and a diaphragm 26.

[0042] FIG. 5 is a schematic exploded view of the frame 21 shown in FIG. 4. The frame 21 includes a frame body 211, a fastener 212, a first limiting part 213, and a second limiting part 214.

[0043] FIG. 6a is a schematic diagram of a structure of the frame body 211 shown in FIG. 5 at an angle. FIG. 6b is a schematic diagram of a structure of the frame body 211 shown in FIG. 5 at another angle. The frame body 211 includes a side wall 211a and a bottom wall 211b. The side wall 211a of the frame body 211 surrounds a periphery of the bottom wall 211b of the frame body 211, and is fastened to the periphery of the bottom wall 2212 of the frame body 211. The side wall 211a and the bottom wall 211b of the frame body 211 enclose an accommodating groove 2114.

[0044] The bottom wall 211b of the frame body 211 is provided with a mounting hole 2116. The mounting hole 2116 may connect the accommodating groove 2114 to an outside of the frame body 211. There may be one or more mounting holes 2116. When there are a plurality of mounting holes 2116, the plurality of mounting holes 2116 are disposed at intervals. In this implementation, there are four mounting holes 2116.

[0045] The bottom wall 211b of the frame body 211 is further provided with a first fastening hole 2117. The first fastening hole 2117 and the mounting hole 2116 are disposed at an interval. The first fastening hole 2117 may also connect the accommodating groove 2114 to the outside of the frame body 211. In this implementation, there is one first fastening hole 2117. The plurality of mounting holes 2116 are disposed around the first fastening hole 2117. In another implementation, a quantity and positions of first fastening holes 2117 are not specifically limited.

[0046] The bottom wall 211b of the frame body 211 is further provided with a limiting hole 2118. The limiting hole 2118 may also connect the accommodating groove 2114 to the outside of the frame body 211. The limiting hole 2118, the mounting hole 2116, and the first fastening hole 2117 are disposed at intervals. There may be one or more limiting holes 2118. When there are a plurality of limiting holes 2118, the plurality of limiting holes 2118 are disposed at intervals. In this implementation, there are two limiting holes 2118. The two limiting holes 2118 are located around the first fastening hole 2117, and the plurality of mounting holes 2116 are disposed around the limiting holes 2118. In another implementation, a position of the limiting hole 2118 is not specifically limited.

[0047] Refer to FIG. 6a and FIG. 6b again. The side wall 211a of the frame body 211 includes a first part 2111, a second part 2112, and a third part 2113 that are sequentially connected, that is, the second part 2112 is connected between the first part 2111 and the third part 2113. The first part 2111 and the second part 2112 are in a bent shape. The second part 2112 and the third part 2113 are in a bent shape. In a Z-axis direction, the first part 2111 and the third part 2113 form a height difference, and the first part 2111, the second part 2112, and the third part 2113 form a step shape.

[0048] The first part 2111 is provided with a through hole 2115. The through hole 2115 may connect the accommodating groove 2114 to the outside of the frame body 211. There may be one or more through holes 2115. When there are a plurality of through holes 2115, the plurality of through holes 2115 are disposed at intervals. In this implementation, there are seven through holes 2115.

[0049] FIG. 7 is a schematic exploded view of the fastener 212 shown in FIG. 5. The fastener 212 includes a fastening base 2121 and a fastening part 2122. The fastening part 2122 may be a screw, a bolt, a pin, or the like. Specifically, this is not limited in this implementation.

[0050] With reference to FIG. 7, FIG. 8 is a schematic diagram of a structure of the fastening base 2121 shown in FIG. 7 at another angle. The fastening base 2121 includes a fastening base body 2123, a first limiting block 2124, and a second limiting block 2125. There may be one or more first limiting blocks 2124. When there are a plurality of first limiting blocks 2124, the plurality of first limiting blocks 2124 are disposed at intervals. In addition, there may be one or more second limiting blocks 2125. When there are a plurality of second limiting blocks 2125, the plurality of second limiting blocks 2125 are disposed at intervals. In this implementation, there are four first limiting blocks 2124. There are two second limiting blocks 2125. It may be understood that when there are a plurality of first limiting blocks 2124, sizes and dimensions of the plurality of first limiting blocks 2124 may not be completely the same. When there are a plurality of second limiting blocks 2125, sizes and dimensions of the plurality of second limiting blocks 2125 may not be completely the same.

[0051] The fastening base body 2123 includes a first surface 2126 and a second surface 2127 that are disposed back to each other, and a peripheral side surface 2128 connected between the first surface 2126 and the second surface 2127. The first limiting block 2124 protrudes from the first surface 2126. The second limiting block 2125 protrudes from the second surface 2127.

[0052] In addition, the fastening base body 2123 is provided with a second fastening hole 2129. There are two openings of the second fastening hole 2129. One opening is located on the first surface 2126, and the other opening is located on the second surface 2127. In another implementation, there may alternatively be one opening of the second fastening hole 2129, and the opening is located on the second surface 2127.

[0053] FIG. 9 is a schematic diagram of a partial structure of the frame 21 shown in FIG. 4. The fastening base body 2123 is disposed in the accommodating groove 2114, and is fastened to the bottom wall 211b of the frame body 211. The first limiting block 2124 is away from the bottom wall 211b of the frame body 211. The plurality of mounting holes 2116 are disposed around the fastening base body 2123.

[0054] FIG. 10 is a schematic diagram of a cross section at a line B-B of the frame 21 shown in FIG. 9. The fastening part 2122 passes through the first fastening hole 2117 of the frame body 211 and the second fastening hole 2129 of the fastening base body 2123, so that the fastening base body 2123 is fastened to the frame body 211.

[0055] In addition, the second limiting block 2125 of the fastening base 2121 is inserted into the limiting hole 2118 of the frame body 211. The plurality of second limiting blocks 2125 are disposed in a one-to-one correspondence with the plurality of limiting holes 2118. In this way, a connection between the fastening base 2121 and the frame body 211 is more stable and firmer.

[0056] In another implementation, the fastener 212 may alternatively not include the fastening part 2122. In this case, the fastening base 2121 may be fastened to the bottom wall 211b of the frame body 211 through bonding, welding, or the like.

[0057] In another implementation, the fastener 212 may alternatively not include the fastening part 2122. In this case, the fastening base 2121 and the bottom wall 211b of the frame body 211 may be an integrated structure, that is, the fastening base 2121 is a part of the bottom wall 211b of the frame body 211.

[0058] FIG. 11 is a schematic diagram of a structure of the first limiting part 213 shown in FIG. 5 at another angle. The first limiting part 213 includes a base 2131, a hook part 2132, and a fastening part 2133. One end of the hook part 2132 is fastened to the base 2131, and the other end of the hook part 2132 and the base 2131 are disposed at an interval to form an opening. The hook part 2132 and the base 2131 jointly enclose a wire space 2134. It may be understood that the fastening part 2133 may be a screw, a bolt, a pin, or the like. Specifically, this is not limited in this implementation. In another implementation, the first limiting part 213 may alternatively not include the fastening part 2133.

[0059] In another implementation, both ends of the hook part 2132 may alternatively be fastened to the base 2131.

[0060] With reference to FIG. 11, FIG. 12 is a schematic diagram of a structure of the frame 21 shown in FIG. 4 at different angles. The first limiting part 213 is disposed in the accommodating groove 2114 of the frame body 211. The base 2131 of the first limiting part 213 is fastened to the bottom wall 211b of the frame body 211. In this implementation, the fastening part 2133 of the first limiting part 213 may pass through the base 2131 of the first limiting part 213 and the bottom wall 211b of the frame body 211, so that the base 2131 of the first limiting part 213 is fastened to the bottom wall 211b of the frame body 211. In another implementation, when the first limiting part 213 does not include the fastening part 2133, the base 2131 may alternatively be fastened to the bottom wall 211b of the frame body 211 through bonding, welding, or the like.

[0061] In another implementation, when the first limiting part 213 does not include the fastening part 2133, the base 2131 and the bottom wall 211b of the frame body 211 may alternatively be an integrated structure, that is, the base 2131 is a part of the bottom wall 211b of the frame body 211.

[0062] Refer to FIG. 12 again. The second limiting part 214 is disposed in the accommodating groove 2114 of the frame body 211, and is disposed at an interval with the first limiting part 213. The second limiting part 214 is fastened to the bottom wall 211b of the frame body 211. It may be understood that the second limiting part 214 and the first limiting part 213 may be of a same or similar structure, a symmetric or partially symmetric structure, or different structures. In some embodiments, the second limiting part 214 and the first limiting part 213 are of a same structure. For a basic design of a part structure of the second limiting part 214, a design of a connection relationship between parts, and a design of a connection relationship between a part and another structure other than the component, refer to a related solution of the first limiting part 213. In addition, the second limiting part 214 and the first limiting part 213 are allowed to be slightly different in detailed structures or position arrangements of the parts.

[0063] The foregoing specifically describes the structure of the frame 21 with reference to the related accompanying drawings. The following specifically describes a structure of the magnetic system 22 and a position relationship and a connection relationship between the magnetic system 22 and the frame 21 with reference to the related accompanying drawings.

[0064] Refer to FIG. 4 again. The magnetic system 22 includes one or more magnetic components 22a. An example in which there are four magnetic components 22a in this implementation is used for description. It may be understood that the four magnetic components 22a may be of a same or similar structure, a symmetric or partially symmetric structure, or different structures. In this implementation, the four magnetic components 22a are of a same structure. The following uses one of the magnetic components 22a as an example for description. For a basic design of a part structure of the other three magnetic components 22a, a design of a connection relationship between parts, and a design of a connection relationship between a part and another structure other than the component, refer to a related solution of the magnetic component 22a described below. In addition, the four magnetic components 22a are allowed to be slightly different in detailed structures or position arrangement of the components.

[0065] FIG. 13 is a schematic exploded view of the magnetic component 22a shown in FIG. 4. The magnetic component 22a includes a yoke 221, a lower plate 222, a magnetic part 223, and an upper plate 224. The magnetic part 223 may be magnetic steel. In other implementations, the magnetic component 22a may alternatively not include the lower plate 222.

[0066] With reference to FIG. 13, FIG. 14 is a schematic sectional view of the magnetic component 22a shown in FIG. 4. The yoke 221 includes a bottom wall 2211 and a side wall 2212. It should be noted that FIG. 14 schematically distinguishes the bottom wall 2211 and the side wall 2212 of the yoke 221 by using dashed lines. The side wall 2212 of the yoke 221 surrounds a periphery of the bottom wall 2212. The side wall 2212 of the yoke 221 is fastened to the bottom wall 2212 of the yoke 221. The bottom wall 2211 and the side wall 2212 of the yoke 221 enclose a groove 2213.

[0067] The lower plate 222 is located in the groove 2213, and is fastened to the bottom wall 2211 of the yoke 221. The magnetic part 223 is also located in the groove 2213, and is stacked on the lower plate 222. The magnetic part 223 is fastened to the lower plate 222. The upper plate 224 is also located in the groove 2213, and is stacked on the magnetic part 223. The upper plate 224 is fastened to the magnetic part 223.

[0068] In addition, the lower plate 222, the magnetic part 223, and the upper plate 224 are all disposed at intervals with the side wall 2212 of the yoke 221. In this case, a vacant space is formed between the lower plate 222, the magnetic part 223, and the upper plate 224, and the side wall 2212 of the yoke 221. A magnetic gap S is formed between the upper plate 224 and the side wall 2212 of the yoke 221. In this case, there is a magnetic field having a specific magnetic field direction in the magnetic gap S. The magnetic field direction is a direction in which the upper plate 224 faces toward the side wall 2212 of the yoke 221.

[0069] For example, the bottom wall 2211, the lower plate 222, the magnetic part 223, and the upper plate 224 of the yoke 221 may be connected by using adhesive.

[0070] In other implementations, the upper plate 224 may alternatively be partially located in the groove 2213, and partially located outside the groove 2213.

[0071] FIG. 15 is a schematic diagram of a partial structure of the speaker 20 shown in FIG. 2. The magnetic component 22a is fastened to the bottom wall 211b of the frame body 211. Some of the magnetic components 22a are located in the accommodating groove 2114, and some of the magnetic components 22a pass through the mounting hole 2116 and are located outside the frame body 211. It may be understood that the plurality of magnetic components 22a are disposed in a one-to-one correspondence with the plurality of mounting holes 2116, that is, one magnetic component 22a passes through one mounting hole 2116. In another implementation, the magnetic components 22a may alternatively be all located in the accommodating groove 2114.

[0072] With reference to FIG. 15, FIG. 16 is a sectional view of a part of the speaker 20 shown in FIG. 15 at a line C-C. The bottom wall 2211 of the yoke 221 passes through the mounting hole 2116, and is located outside the frame body 211. For example, the side wall 2212 of the yoke 221 forms a step shape. The side wall 2212 of the yoke 221 is provided with a first fastening surface 2212a. A hole wall of the mounting hole 2116 forms a step shape. The hole wall of the mounting hole 2116 is provided with a second fastening surface 2116a. The first fastening surface 2212a of the yoke 221, and the second fastening surface 2116a of the mounting hole 2116 are attached, and fastened to each other. For example, the first fastening surface 2212a of the yoke 221 may be fastened to the second fastening surface 2116a of the mounting hole 2116 by using adhesive. In another implementation, the yoke 221 may alternatively be connected to the bottom wall 211b of the frame body 211 in another connection manner. Details are not described herein again.

[0073] The foregoing specifically describes a structure of the magnetic system 22 and a position relationship and a connection relationship between the magnetic system 22 and the frame 21 with reference to related accompanying drawings. The following specifically describes a structure of the spider 23, and a position relationship and a connection relationship between the spider 23 and the frame 21 and the magnetic system 22 with reference to related accompanying drawings.

[0074] FIG. 17 is an enlarged schematic diagram of the spider 23 shown in FIG. 4. The spider 23 includes a first surface 231 and a second surface 232 that are disposed back to each other. At least a part of the first surface 231 is a plane. At least a part of the second surface 232 is a plane. The spider 23 is provided with a first fastening hole 233 and a second fastening hole 234 that are disposed at an interval. The first fastening hole 233 forms an opening on each of the first surface 231 and the second surface 232. The second fastening hole 234 forms an opening on each of the first surface 231 and the second surface 232. There may be one or more first fastening holes 231. When there are a plurality of first fastening holes 231, the plurality of first fastening holes 231 are disposed at intervals. It should be understood that the plurality of first fastening holes 231 may be slightly different in detail structures or position arrangements. There may be one or more second fastening holes 232. When there are a plurality of second fastening holes 232, the plurality of second fastening holes 232 are disposed at intervals. It should be understood that the plurality of second fastening holes 232 may be slightly different in detail structures or position arrangements. In this implementation, there are four first fastening holes 231 and four second fastening holes 232.

[0075] For example, the first fastening hole 233 is located in the middle of the spider 23. The second fastening hole 234 is located at a periphery of the spider 23.

[0076] For example, the spider 23 is made of a metal material like a copper foil or stainless steel.

[0077] In addition, the spider 23 is provided with an avoidance space 235. The avoidance space 235, the first fastening hole 233, and the second fastening hole 234 are disposed at intervals. There may be one or more avoidance spaces 235. When there are a plurality of avoidance spaces 235, the plurality of avoidance spaces 235 are disposed at intervals. It should be understood that the plurality of avoidance spaces 235 may be slightly different in detail structures or position arrangements.

[0078] In this implementation, the spider 23 is of a multi-segment structure. The spider 23 includes a first segment 1, a second segment 2, a third segment 3, and a fourth segment 4. The first segment 1, the second segment 2, the third segment 3, and the fourth segment 4 are all curved. A first end part of the first segment 1, a first end part of the second segment 2, a first end part of the third segment 3, and a first end part of the fourth segment 4 are jointly connected. A second end part of the first segment 1 and the second segment 2 are disposed at an interval. The first segment 1 and the second segment 2 enclose a first avoidance space 235. A second end part of the second segment 2 and the third segment 3 are disposed at an interval. The second segment 2 and the third segment 3 enclose a second avoidance space 235. A second end part of the third segment 3 and the fourth segment 4 are disposed at an interval. The third segment 3 and the fourth segment 4 enclose a third avoidance space 235. A second end part of the fourth segment 4 and the first segment 1 are disposed at an interval. The fourth segment 4 and the first segment 1 enclose a fourth avoidance space 235. It should be noted that FIG. 17 schematically distinguishes the first segment 1, the second segment 2, the third segment 3, and the fourth segment 4 by using dashed lines.

[0079] The first end part of the first segment 1, the first end part of the second segment 2, the first end part of the third segment 3, and the first end part of the fourth segment 4 are provided with first fastening holes 233. The second end part of the first segment 1, the second end part of the second segment 2, the second end part of the third segment 3, and the second end part of the fourth segment 4 are provided with second fastening holes 234.

[0080] With reference to FIG. 17, FIG. 18 is a schematic diagram of a partial structure of the speaker 20 shown in FIG. 2. The spider 23 is disposed in the accommodating groove 2114, and the spider 23 is fastened to the bottom wall 211b of the frame body 211. The second surface 232 of the spider 23 faces toward the bottom wall 211b of the frame body 211. In this implementation, the spider 23 may be fastened to the bottom wall 211b of the frame body 211 by using the fastening base 2121 (which may be combined with FIG. 9) of the frame 21.

[0081] For example, the plurality of first limiting blocks 2124 of the fastening base 2121 pass through the plurality of first fastening holes 233 of the spider 23 in a one-to-one correspondence. The first limiting block 2124 may be in interference fit with the first fastening hole 233, so that the spider 23 is fastened to the fastening base 2121. In another implementation, the spider 23 may also be fastened to the fastening base 2121 by filling the first fastening hole 233 with glue or the like.

[0082] In addition, the spider 23 is disposed around the magnetic system 22. For example, the plurality of magnetic components 22a pass through the plurality of avoidance spaces 235 of the spider 23 in the one-to-one correspondence. In this way, the spider 23 and the magnetic system 22 have an overlapped area in the Z-axis direction.

[0083] In another implementation, the spider 23 may alternatively use another structure, so that the spider 23 is disposed around the magnetic system 22. For example, the spider 23 may be of a ring structure.

[0084] The foregoing specifically describes a structure of the spider 23, and a position relationship and a connection relationship between the spider 23 and the frame 21 and the magnetic system 22 with reference to related accompanying drawings. The following describes in detail structures of the surround 25, the diaphragm 26, and the voice coil system 24, position relationships and connection relationships between the surround 25, the diaphragm 26, and the voice coil system 24, and position relationships and connection relationships between the surround 25, the diaphragm 26, and the voice coil system 24 and other parts of the speaker 20 with reference to related accompanying drawings.

[0085] FIG. 19 is an enlarged schematic diagram of the surround 25 shown in FIG. 4. The surround 25 is in a ring shape. The surround 25 has an outer periphery 251 and an inner periphery 252. For example, the outer periphery 251 of the surround 25 may be flat. The inner periphery 252 of the surround 25 may be in a protrusion shape.

[0086] With reference to FIG. 19, FIG. 20 is a schematic diagram of a partial structure of the speaker 20 shown in FIG. 2. The outer periphery 261 of the surround 25 is fastened to the second part 2112 of the frame body 211. An area surrounded by the inner periphery 252 of the surround 25 may be opposite to the magnetic system 22, that is, opposite to the four magnetic components 22a.

[0087] For example, the outer periphery 251 of the surround 25 may be fastened to the second part 2112 of the frame body 211 by using an adhesive tape or glue.

[0088] FIG. 21 is a schematic diagram of a structure of the diaphragm 26 shown in FIG. 4 at different angles. The diaphragm 26 includes a diaphragm body 261 and a fastening post 262. There may be one or more fastening posts 262. When there are a plurality of fastening posts 262, the plurality of fastening posts 262 are disposed at intervals. An example in which there are four fastening posts 262 in this implementation is used for description.

[0089] The diaphragm body 261 includes a bottom plate 2611 and a side wall 2612 (namely, an outer periphery 2612 of the diaphragm body 261). The side wall 2612 of the diaphragm body 261 surrounds a periphery of the bottom plate 2611 of the diaphragm body 261, and is fastened to the periphery of the bottom plate 2611 of the diaphragm body 261. The bottom plate 2611 and the side wall 2612 of the diaphragm body 261 enclose an accommodating groove 2613. The plurality of fastening posts 262 are located in the accommodating groove 2613, and are fastened to the bottom plate 2611 of the diaphragm body 261.

[0090] In addition, the bottom plate 2611 of the diaphragm body 261 is provided with a plurality of protrusions. The plurality of protrusions may enclose a fastening slot 263, a first wire slot 264, and a second wire slot 265. It should be understood that there may be one or more fastening slots 263. When there are a plurality of fastening slots 263, the plurality of fastening slots 263 are disposed at intervals. There may be one or more first wire slots 264. When there are a plurality of first wire slots 264, the plurality of first wire slots 264 are disposed at intervals. There may be one or more second wire slots 265. When there are a plurality of second wire slots 265, the plurality of second wire slots 265 are disposed at intervals. In this implementation, an example in which there are four fastening slots 263, two first wire slots 264, and two second wire slots 265 is used for description.

[0091] In another implementation, the fastening slot 263, the first wire slot 264, and the second wire slot 265 may alliteratively be formed by recessing the bottom plate 2611 of the diaphragm body 261.

[0092] One first wire slot 264 may connect two adjacent fastening slots 263. The second wire slot 265, the fastening slot 263 and the first wire slot 264 are disposed at intervals.

[0093] In addition, the fastening post 262 includes a first post body 2621 and a second post body 2622. The second post body 2622 is connected to an end of the first post body 2621. The first post body 2621 is fastened to the bottom plate 2611 of the diaphragm body 261. A diameter of the first post body 2621 is greater than a diameter of the second post body 2622.

[0094] Refer to FIG. 4 again. The voice coil system 24 includes one or more voice coils 24a. An example in which there are four voice coils 24a in this implementation is used for description. It may be understood that the four voice coils 24a may be of a same or similar structure, a symmetric or partially symmetric structure, or different structures. In this implementation, the four voice coils 24a are of a same structure. The following uses one voice coil 24a as an example. In addition, for a basic design of a part structure of the other three voice coils 24a, a design of a connection relationship between parts, and a design of a connection relationship between a part and another structure other than the component, refer to a related solution of the voice coil 24a described below. In addition, the four voice coils 24a are allowed to be slightly different in detailed structures or position arrangement of the components.

[0095] FIG. 22 is an enlarged schematic diagram of the voice coil 24a shown in FIG. 4. The voice coil 24a includes a voice coil framework 241 and a voice coil lead wire 242. The voice coil framework 241 may be in a ring shape. The voice coil lead wire 242 is fastened to an outer side surface of the voice coil framework 241, to form a coil structure. For example, the voice coil lead wire 242 is fastened to the outer side surface of the voice coil framework 241 through a winding process.

[0096] With reference to FIG. 21 and FIG. 22, FIG. 23 is a schematic diagram of a partial structure of the speaker 20 shown in FIG. 2. The voice coil framework 241 of the voice coil 24a is fastened to the diaphragm 26. For example, an end part of the voice coil framework 241 of the voice coil 24a may be inserted into a fastening slot 263 of the diaphragm body 261. When there are four voice coils 24a and four fastening slots 263, the voice coil frameworks 241 of the four voice coils 24a are inserted into the plurality of fastening slots 263 in a one-to-one correspondence. It may be understood that the voice coil framework 241 of the voice coil 24a may be in interference fit with the fastening slot 263 of the diaphragm body 261. In another implementation, glue may alternatively be filled in the fastening slot 263, so that the voice coil framework 241 of the voice coil 24a is fastened to the fastening slot 263 of the diaphragm body 261.

[0097] In this implementation, the four voice coils 24a are divided into two parts. Each part includes two voice coils 24a. The two voice coils 24a of each part are disposed in series. The voice coils 24a of the two parts are disposed in parallel.

[0098] For example, as shown in FIG. 23, the voice coil system 24 includes a first voice coil 240a, a second voice coil 240b, a third voice coil 240c, and a fourth voice coil 240d. The first voice coil 240a and the second voice coil 240b are disposed in series to form a first whole 41. The third voice coil 240c and the fourth voice coil 240d are disposed in series to form a second whole 42. The first whole 41 and the second whole 42 are disposed in parallel.

[0099] In an implementation, the first voice coil 240a and the second voice coil 240b may be disposed in series by using a first lead wire 243. The first lead wire 243 electrically connects the first voice coil 240a to the second voice coil 240b. The third voice coil 240c and the fourth voice coil 240d may be disposed in series by using a second lead wire 244. The second lead wire 244 electrically connects the third voice coil 240c to the fourth voice coil 240d. The first whole 41 and the second whole 42 are disposed in parallel by using a third lead wire 245 and a fourth lead wire 246. The third lead wire 245 electrically connects the first whole 41 to the second whole 42. The fourth lead wire 246 electrically connects the first whole 41 to the second whole 42. The first lead wire 243 and the second lead wire 244 may be separately fastened by using two first wire slots 264. The third lead wire 245 and the fourth lead wire 246 may be separately fastened by using two second wire slots 265. In this way, the first lead wire 243, the second lead wire 244, the third lead wire 245, and the fourth lead wire 246 are arranged regularly inside the speaker 20, and are unlikely to interfere with another part. It should be noted that, 240b and 240c on the left side of FIG. 23 are unmarked leads, mainly to indicate that 240b and 240a belong to 41. 240c and 240d belong to 42. In addition, reference numerals 240b and 240c have been marked on the right side of FIG. 23.

[0100] For example, the first lead wire 243, the second lead wire 244, the third lead wire 245, and the fourth lead wire 246 may be tinsel wires.

[0101] In another implementation, the first lead wire 243, the second lead wire 244, the third lead wire 245, and the fourth lead wire 246 may be a part of the voice coil lead wire 242 of the voice coil 24a.

[0102] FIG. 24 is a schematic sectional view of the speaker 20 shown in FIG. 2. The diaphragm 26 is fastened to the inner periphery 252 of the surround 25. For example, the side wall 2612 of the diaphragm body 261 is located outside the inner periphery 252 of the surround 25. The bottom plate 2611 of the diaphragm body 261 and the side wall 2612 of the diaphragm body 261 may be fastened to the inner periphery 252 of the surround 25 by using a double-sided tape or glue.

[0103] The spider 23 is fastened to the diaphragm 26. In this case, the spider 23 is fastened to the diaphragm 26 and the bottom wall 211b of the frame body 211. The first surface 231 of the spider 23 faces toward the diaphragm 26. In this implementation, the spider 23 may be fastened to the bottom plate 2611 of the diaphragm body 261 by using the fastening post 262 of the diaphragm 26. The plurality of fastening posts 262 of the diaphragm 26 pass through the plurality of second fastening holes 234 of the spider 23 in a one-to-one correspondence. Specifically, the second post body 2622 of the fastening post 262 is inserted into the second fastening hole 234 of the spider 23. The second post body 2622 of the fastening post 262 may be fastened to the spider 23 through interference fit between the second post body 2622 and the hole wall of the second fastening hole 234. In another implementation, the second fastening hole 234 may be filled with glue or the like, so that the second post body 2622 of the fastening post 262 is fastened to the spider 23.

[0104] At least a part of each voice coil 24a is located in the accommodating groove 2114, one part of each voice coil 24a is located outside the magnetic system 22, and the other part of each voice coil 24a is located inside the magnetic system 22. The other end part of the voice coil 24a is located in the magnetic gap S of the magnetic system 22. When there are four voice coils 24a, and there are four magnetic components 22a of the magnetic system 22, the other end parts of the four voice coils 22a are located in the magnetic gaps S of the four magnetic components 22a in a one-to-one correspondence. In this way, when an audio signal is transmitted to the voice coil 24a, the voice coil 24a may generate a current. The voice coil 24a moves in a Z-axis direction in a magnetic field environment in the magnetic gap S. The voice coil 24a can drive the diaphragm 26 to vibrate in the Z-axis direction. In this case, the diaphragm 26 pushes air near the diaphragm 26 to be compressed and expanded, and the air is compressed and expanded to make sound.

[0105] In addition, the third lead wire 245 of the voice coil system 24 passes through the wire space 2134 of the first limiting part 213 of the frame 21 and the through hole 2115 of the frame body 211, extends out of the frame 21, and is electrically connected to an external component of the speaker 20. It may be understood that the wire space 2134 may be used to fasten the third lead wire 245. In this way, the third lead wires 245 are arranged regularly inside the speaker 20, and are unlikely to interfere with another part. The fourth lead wire 246 of the voice coil system 24 may pass through the wire space 2144 of the second limiting part 214 of the frame 21 and the through hole 2115 of the frame body 211, extends out of the frame 21, and is electrically connected to an external component of the speaker 20. It may be understood that the wire space 2144 may be used to fasten the fourth lead wire 246. In this way, the fourth lead wires 246 are arranged regularly inside the speaker 20, and are unlikely to interfere with another part.

[0106] For example, a first wiring board (not shown in the figure) may be disposed on the frame 21. When the third lead wire 245 passes through the wire space 2134 of the first limiting part 213 of the frame 21 and the through hole 2115 of the frame body 211, the third lead wire 245 may be fastened to the first wiring board, and electrically connected to the first wiring board. In this case, the third lead wire 245 may be electrically connected to an external component of the speaker 20 by using the first wiring board.

[0107] For example, a second wiring board (not shown in the figure) may be disposed on the frame 21. When the fourth lead wire 246 of the voice coil system 24 passes through the wire space 2144 of the second limiting part 214 of the frame 21 and the through hole 2115 of the frame body 211, the fourth lead wire 246 may be fastened to the second wiring board, and electrically connected to the second wiring board. In this case, the fourth lead wire 246 may be electrically connected to an external component of the speaker 20 by using the second wiring board.

[0108] It may be understood that a structure of the magnetic system 22 is described in this implementation. A magnetic field generated by the magnetic system 22 may drive the voice coil 24a to move in a Z-axis direction. In another implementation, another magnetic structure may alternatively be used as the structure of the magnetic system 22. The magnetic system 22 that can generate a magnetic field that enables the voice coil 24a to move in the Z-axis direction falls within the protection scope of this application.

[0109] In this implementation, the spider 23 is fastened to the diaphragm 26 and the bottom wall 211b of the frame 21, so that the spider 23 may be disposed close to the bottom wall 211b of the frame body 211 to a large extent. In this case, a distance between the diaphragm 26 and the bottom wall 211b of the frame body 211 can also be reduced to a large extent. A thickness of the speaker 20 in the Z-axis direction can be reduced to a large extent. This helps thinning of the speaker 20. When the spider 23 may be disposed close to the bottom wall 211b of the frame body 211 to a large extent, the spider 23 may be disposed around the magnetic system 22. In the Z-axis direction, the spider 23 and the magnetic system 22 have an overlapped area, that is, in the Z-axis direction, the thickness of the speaker 20 no longer includes a thickness of the spider 23. In this way, the thickness of the speaker 20 in the Z-axis direction can be reduced to a large extent. This helps thinning of the speaker 20.

[0110] It may be understood that, when the thickness of the speaker 20 in the Z-axis direction is reduced to a large extent, a distance between the magnetic system 22 and the diaphragm 26 is small, and a vibration space of the diaphragm 26 is small. In this case, it is difficult for the speaker 20 to make loud sound, that is, it is difficult for the speaker 20 to emit an accent. In this implementation, the magnetic system 22 including four magnetic components 22a and the voice coil system 24 including four voice coils 24a are used. In this way, an area of a connection between the voice coil system 24 and the diaphragm 26 is large. When the voice coil 24a moves in the Z-axis direction in a magnetic field environment in the magnetic gap S, the voice coil 24a has a large driving force, to drive the diaphragm 26 to vibrate in the Z-axis direction. In this way, the speaker 20 has an enough loudness to ensure replay effect. In particular, when a frequency of the sound is a low frequency, the speaker 20 still has enough loudness to ensure the replay effect.

[0111] In addition, when the voice coil 24a has a large driving force, an amplitude of the diaphragm 26 is large. If a conventional damper structure is used, because the conventional damper structure occupies a large space, the conventional damper structure is likely to collide with the voice coil 24a. In this case, sound made by the speaker 20 generates abnormal sound, and the sound made by the speaker 20 is likely to be distorted. In this implementation, a spider 23 structure is used. Because surfaces of the spider 23 are planes, a space occupied by the spider 23 is small. In this case, space utilization of the speaker 20 is high. In addition, the spider 23 is unlikely to collide with the voice coil 24a. In this way, sound made by the speaker 20 is unlikely to generate abnormal sound, and the sound made by the speaker 20 is unlikely to be distorted.

[0112] In addition, because a structure of the conventional damper is wave-shaped, the damper deforms more. When the speaker 20 makes sound, nonlinear distortion is large. However, in this implementation, the spider 23 is used. The spider has no obvious deformation because of a high structural flatness. When the speaker 20 makes sound, the nonlinear distortion is small, that is, the speaker 20 has better linearity.

[0113] In this implementation, the spider 23 is fastened to the diaphragm 26 and the bottom wall 211b of the frame body 211, so that when the voice coil 24a drives the diaphragm 26 to vibrate in the Z-axis direction, the spider 23 may apply an action force in the Z-axis direction to the diaphragm 26. This prevents the voice coil 24a and the diaphragm 26 from moving along an X-Y plane, that is, prevents the voice coil 24a and the diaphragm 26 from swinging left or right.

[0114] In addition, when the surround 25 is fastened to the frame 21, the voice coil 24a drives the diaphragm 26 to vibrate in the Z-axis direction. The surround 25 may apply an action force to the diaphragm 26, to prevent the voice coil 24a and the diaphragm 26 from moving along the X-Y plane, that is, to prevent the voice coil 24a and the diaphragm 26 from swinging left or right.

[0115] In a second implementation, technical content that is the same as that in the first implementation is not described again. FIG. 25 is a schematic diagram of a structure of another implementation of the spider 23 according to an embodiment of this application. A second end part of the first segment 1 of the spider 23 is fastened to the second segment 2. The first segment 1 and the second segment 2 roughly form a closed-loop structure. A second end part of the second segment 2 is fastened to the third segment 3. The second segment 2 and the third segment 3 roughly form a closed-loop structure. A second end part of the third segment 3 is fastened to the fourth segment 4. The third segment 3 and the fourth segment 4 roughly form a closed-loop structure. A second end part of the fourth segment 4 is fastened to the first segment 1. The fourth segment 4 and the first segment 1 roughly form a closed-loop structure. It should be noted that FIG. 25 schematically distinguishes the first segment 1, the second segment 2, the third segment 3, and the fourth segment 4 by using dashed lines. In this implementation, a position of the second fastening hole 234 is not limited to the second end part of the first segment 1, the second end part of the second segment 2, the second end part of the third segment 3, and the second end part of the fourth segment 4.

[0116] It may be understood that the periphery of the spider 23 in this implementation is a continuous structure. In this way, overall structure strength of the spider 23 is good, and the spider 23 is unlikely to be damaged.

[0117] FIG. 26 is a partial schematic sectional view of the speaker 20 in another implementation according to an embodiment of this application. The spider 23 is disposed around the magnetic system 22. For example, the plurality of magnetic components 22a pass through the plurality of avoidance spaces 235 of the spider 23 in a one-to-one correspondence. In this implementation, the spider 23 may completely enclose the magnetic system 22.

[0118] In this application, several structures of the speaker 20 are specifically described with reference to related accompanying drawings. Specifically, the spider 23 is fastened to the diaphragm 26 and the bottom wall 211b of the frame 21, so that the spider 23 may be disposed close to the bottom wall 211b of the frame body 211 to a large extent. In this case, a distance between the diaphragm 26 and the bottom wall 211b of the frame body 211 can also be reduced to a large extent. A thickness of the speaker 20 in the Z-axis direction can be reduced to a large extent. This helps thinning of the speaker 20.

[0119] The foregoing descriptions are merely specific implementations of this application, but are not intended to limit the protection scope of this application. Any variation or replacement readily figured out by a person skilled in the art within the technical scope disclosed in this application shall fall within the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims

1. A speaker (20), comprising a frame (21), a magnetic system (22), a spider (23), a voice coil (24a), a surround (25), and a diaphragm (26), wherein

the frame (21) comprises a side wall (211a) and a bottom wall (211b), the side wall (211a) of the frame (21) is fastened to a periphery of the bottom wall (211b) of the frame (21), and the side wall (211a) and the bottom wall (211b) of the frame (21) enclose an accommodating groove (2114);

at least a part of the magnetic system (22) is located in the accommodating groove (2114), and the magnetic system (22) is fastened to the bottom wall (211b) of the frame (21);

an outer periphery (251) of the surround (25) is fastened to the side wall (211a) of the frame (21);

an outer periphery (2612) of the diaphragm (26) is fastened to an inner periphery (252) of the surround (25);

at least a part of the voice coil (24a) is located in the accommodating groove (2114), one end of the voice coil (24a) is fastened to the diaphragm (26), and the other end of the voice coil (24a) is located in a magnetic gap (S) of the magnetic system (22); and

the spider (23) is located in the accommodating groove (2114), the spider (23) is disposed around the magnetic system (22), and the spider (23) is fastened to the bottom wall (211b) of the frame (21) and the diaphragm (26).

2. The speaker (20) according to claim 1, wherein the magnetic system (22) comprises four magnetic components (22a) disposed at intervals, there are four voice coils (22a), and other end parts of the four voice coils (22a) are located in the magnetic gaps (S) of the four magnetic components (22a) in a one-to-one correspondence; and
the spider (23) is provided with four avoidance spaces (235) disposed at intervals, and the four magnetic components (22a) pass through the four avoidance spaces (235) in the one-to-one correspondence.

3. The speaker (20) according to claim 2, wherein the spider (23) comprises a first segment (1), a second segment (2), a third segment (3), and a fourth segment (4), and the first segment (1), the second segment (2), the third segment (3), and the fourth segment (4) are all curved; and
a first end part of the first segment (1), a first end part of the second segment (2), a first end part of the third segment (3), and a first end part of the fourth segment (4) are jointly connected, a second end part of the first segment (1) and the second segment (2) are disposed at an interval, the first segment (1) and the second segment (2) enclose a first avoidance space (235), a second end part of the second segment (2) and the third segment (3) are disposed at an interval, the second segment (2) and the third segment (3) enclose a second avoidance space (235), a second end part of the third segment (3) and the fourth segment (4) are disposed at an interval, the third segment (3) and the fourth segment (4) enclose a third avoidance space (235), a second end part of the fourth segment (4) and the first segment (1) are disposed at an interval, and the fourth segment (4) and the first segment (1) enclose a fourth avoidance space (235).

4. The speaker (20) according to claim 3, wherein the first end part of the first segment (1), the first end part of the second segment (2), the first end part of the third segment (3), and the first end part of the fourth segment (4) are all fastened to the bottom wall (211b) of the frame (21), and the second end part of the first segment (1), the second end part of the second segment (2), the second end part of the third segment (3), and the second end part of the fourth segment (4) are all fastened to the diaphragm (26).

5. The speaker (20) according to any one of claims 1 to 4, wherein the spider (23) comprises a first surface (231) and a second surface (232) that are disposed back to each other, the first surface (231) faces toward the diaphragm (26), and the second surface (232) faces toward the bottom wall (211b) of the frame (21); and
at least a part of the first surface (231) is a plane, and at least a part of the second surface (232) is a plane.

6. The speaker (20) according to claim 4, wherein the spider (23) comprises the first segment (1), the second segment (2), the third segment (3), and the fourth segment (4), and the first segment (1), the second segment (2), the third segment (3), and the fourth segment (4) are all curved; and
the first end part of the first segment (1), the first end part of the second segment (2), the first end part of the third segment (3), and the first end part of the fourth segment (4) are jointly connected, the second end part of the first segment (1) is fastened to the second segment (2), the first segment (1) and the second segment (2) enclose the first avoidance space (235), the second end part of the second segment (2) is fastened to the third segment (3), the second segment (2) and the third segment (3) enclose the second avoidance space (235), the second end part of the third segment (3) is fastened to the fourth segment (4), the third segment (3) and the fourth segment (4) enclose the third avoidance space (235), the second end part of the fourth segment (4) is fastened to the first segment (1), and the fourth segment (4) and the first segment (1) enclose the fourth avoidance space (235).

7. The speaker (20) according to any one of claims 2 to 6, wherein the voice coil (22a) comprises a first voice coil (240a), a second voice coil (240b), a third voice coil (240c), and a fourth voice coil (240d); and
the first voice coil (240a) and the second voice coil (240b) are disposed in series to form a first whole (41), the third voice coil (240c) and the fourth voice coil (240d) are disposed in series to form a second whole (42), and the first whole (41) and the second whole (42) are disposed in parallel.

8. The speaker (20) according to claim 7, wherein the speaker (20) further comprises a first lead wire (243), a second lead wire (244), a third lead wire (245), and a fourth lead wire (246); and
the first lead wire (243) electrically connects the first voice coil (240a) to the second voice coil (240b), the second lead wire (244) electrically connects the third voice coil (240c) to the fourth voice coil (240d), the third lead wire (245) electrically connects the first whole (41) to the second whole (42), and the fourth lead wire (246) electrically connects the first whole (41) to the second whole (42).

9. The speaker (20) according to claim 8, wherein the diaphragm (26) is provided with a first wire slot (264) and a second wire slot (265), the first wire slot (264) fastens the first lead wire (243) and the second lead wire (244), and the second wire slot (265) fastens the third lead wire (245) and the fourth lead wire (246).

10. The speaker (20) according to claim 8 or 9, wherein the frame (21) comprises a first limiting part (213), the first limiting part (213) comprises a base (2131) and a hook part (2132), the base (2131) is fastened to the bottom wall (211b) of the frame (21), the hook part (2132) is fastened to the base (2131), and the hook part (2132) and the base (2131) jointly enclose a wire space (2134); and
the third lead wire (245) passes through the wire space (2134).

11. The speaker (20) according to any one of claims 2 to 10, wherein the magnetic component (22a) comprises a yoke (221), a lower plate (222), a magnetic part (223), and an upper plate (224);

the yoke (221) comprises a bottom wall (2211) and a side wall (2212), the side wall (2212) of the yoke (221) is fastened to a periphery of the bottom wall (2212) of the yoke (221), and the bottom wall (2211) of the yoke (221) and the side wall (2212) of the yoke (221) enclose a groove (2213);

the lower plate (222) is located in the groove (2213), and is fastened to the bottom wall (2211) of the yoke (221), and the lower plate (222) and the side wall (2212) of the yoke (221) are disposed at an interval;

the magnetic part (223) is located in the groove (2213), and is fastened to the lower plate (222), and the magnetic part (223) and the side wall (2212) of the yoke (221) are disposed at an interval; and

at least a part of the upper plate (224) is located in the groove (2213), and is fastened to the magnetic part (223), and the upper plate (224) and the side wall (2212) of the yoke (221) are disposed at an interval to form the magnetic gap (S).

12. The speaker (20) according to any one of claims 1 to 11, wherein the spider (23) is provided with a first fastening hole (233) and a second fastening hole (234) that are disposed at an interval;

the frame (21) comprises a first limiting block (2124), the first limiting block (2124) is fastened to the bottom wall (211b) of the frame (21), and the diaphragm (26) is provided with a fastening post (262); and

the first limiting block (2124) is inserted into the first fastening hole (233), and the fastening post (262) is inserted into the second fastening hole (234).

13. The speaker (20) according to claim 12, wherein the frame (21) comprises a frame body (211) and a fastening base (2121), the frame body (211) comprises the bottom wall (211b) of the frame (21) and the side wall (211a) of the frame (21), and the fastening base (2121) comprises the first limiting block (2124); and
the fastening base (2121) is fastened to the bottom wall (211b) of the frame body (211).

14. The speaker (20) according to claim 13, wherein the fastening base (2121) further comprises a second limiting block (2125), and the second limiting block (2125) and the first limiting block (2124) are disposed back to each other; and
the bottom wall (211b) of the frame body (211) is further provided with a limiting hole (2118), and the second limiting block (2125) is inserted into the limiting hole (2118).

15. The speaker (20) according to any one of claims 1 to 14, wherein the diaphragm (26) is provided with a fastening slot (263), and an end part of the voice coil (24a) is inserted into the fastening slot (263).

16. The speaker (20) according to any one of claims 1 to 15, wherein the spider (23) is made of a copper foil or stainless steel.

17. An electronic device (100), comprising a box (10) and the speaker (20) according to any one of claims 1 to 16, wherein the speaker (20) is mounted in the box (10).

Drawing