A SMOKE ALARM

Abstract

 The invention discloses a smoke alarm, which is in the field of machine design, and the smoke alarm comprises a housing, a button column (8.1), a circuit board (4), a smoke collecting box (5), a buzzer (7) and a tune trope (8); and the circuit board (4), the smoke collecting box (5), the buzzer (7) and the tune trope (8) are arranged inside the housing successively. The circuit board (4) is configured with a button module. The smoke collecting box (5) is configured with a first through-hole. The button column (8.1) is configured slidably inside the first through-hole. One end of the button column (8.1) matches with the button module of the circuit board, and another end of the button column (8.1) is connected with the tune trope (8). The tune trope (8) is configured slidably inside the housing, and the sliding direction of the tune trope (8) is the same as the sliding direction of the button column (8.1). The smoke alarm drives one end of the button column (8.1) through the sliding of the tune trope (8) to touch with the button module of the circuit board (4) to emit the button signal. The technical plan of the invention is compact in structure, convenient in use, easy to install and form.

Description

BACKGROUND OF THE INVENTION

1. Field of the Invention

[0001] The field of the invention is machinery, more specifically, a smoke alarm which has compact structure.

2. Description of the Related Art

[0002] The present technology for smoke alarms commonly consists of a circuit board, a smoke collecting box, a housing, a installation base-plate, and a buzzer. The base-plate is arranged on the ceiling. The housing is consisted of upper housing and lower housing. The upper housing is detachably connected to the installation base-plate, and clip-on connection is commonly used. The lower surface of the lower housing needs to be arranged with a button and a tune trope. If the circuit board detected the smoke concentration exceeds the setting value, the buzzer would be controlled to make a sound, and the buzzer would amplify the sound via tune trope. This type of smoke alarm has the following disadvantages: (1). the button is arranged individually, which occupies space and the structure is not compact, which affects the volume of the entire smoke alarm; (2). the smoke collecting box is an integral whole. If the button needs to contact with the circuit board, the column of the button needs to contact with the circuit board from the exterior of the smoke collecting box, and, in this way, the area of the circuit board needs to be bigger than the cross section of the smoke collecting box, and it increases the volume of the smoke alarm accordingly.

SUMMARY OF THE INVENTION

[0003] Accordingly, for the major defects of the present smoke alarms, the present invention provides a smoke alarm which is compact in structure and small in volume.

[0004] To reach the upper mentioned aim, the specific technical plan is as follow:

A smoke alarm comprises a housing, a circuit board, a smoke collecting box, a buzzer and a tune trope, and the circuit board; and the smoke collecting box, the buzzer and the tune trope are arranged inside the housing successively, wherein it also comprises a button column; a button module is arranged on the circuit board; a first through-hole is arranged on the smoke collecting box; the button column is configured slidably inside the first through-hole; one end of the button column matches with the button module of the circuit board; the another end of the button column is connected with the tune trope; the tune trope 8 is configured slidably inside the housing; the sliding direction of the tune trope is the same as the sliding direction of the button column; the smoke alarm drives one end of the button column through the sliding of the tune trope to touch with the button module of the circuit board to emit the button signal.

[0005] Preferably, the cross section of the smoke collecting box is equal to or smaller than the sectional area of the circuit board, wherein the sectional area refers to the cross section along the smoke alarm.

[0006] Preferably, another end of the button column is fixedly connected with the tune trope.

[0007] Preferably, a reset spring is configured between the tune trope and smoke collecting box.

[0008] Preferably, the housing comprises an upper housing and a lower housing which are both cylinder shape, and an annular mesh enclosure for filtering air impurities is configured between the upper housing and lower housing.

[0009] Preferably, the mesh enclosure is welding by laser.

[0010] Preferably, the smoke alarm further comprises a light pipe for transmitting light; one end of the light pipe is connected with the LED light, and another end of the light pipe communicates with the exterior of the housing, and it transmits the light to the exterior of the housing via the light pipe.

[0011] Preferably, the tune trope is also configured with a light transmitting shell; the smoke collecting box is also configured a second through-hole, and the light pipe is arranged inside the second through-hole; another end of the light pipe is connected with the light transmitting shell of the tune trope.

[0012] Preferably, the smoke alarm further comprises a battery; the battery is arranged between the circuit board and the housing.

[0013] Preferably, the housing is also configured with a battery jar which is coupled with the battery.

[0014] With respect to the present technology, the technical plan of the present invention has the following advantages:

1. Through integrating of the button to the tune trope, the tune trope can also be used as a button, users can press the tune trope directly in use, and the button column which is located on the upper surface of the tune trope will touch the button module on the circuit board, so that it provides the function of button, and reduce the components, make the structure more compact and the volume smaller;

2. Configuring the button column inside the through-hole of the smoke collecting box makes it no need to retain extra space for the button switch on the lateral position of circuit board, and reduces the sectional area of the circuit, which can make the size of the circuit board the same as the cross section of the smoke collecting box, and even smaller than the cross sectional area of the smoke collecting box, so that it makes the cross sectional area of the entire smoke alarm smaller.

3. Through placing the battery parallelly, it avoids the place of the clips of the housing etc., and utilizes the vertical space of the housing which reduces the crosswise area of the alarm, makes the structure more compact, and reduces the volume of the smoke alarm;

4. By using the light pipe to transmit the LED light on the circuit board to the exterior of the housing, it avoids the problem of dustproof properties and waterproofness causing by the light transmitting of the through-hole of the housing;

5. A laser welded mesh enclosure is configured in the housing, and it filters the impurities in the air and improves the dustproof properties.

BRIEF DESCRIPTIONS OF THE DRAWINGS

[0015] The part of the drawings is used to explain the invention; the exemplary embodiments of the invention and the specification thereof are used to explain the invention without limiting the invention, in the Figures:

Figure 1 illustrates a structure diagram of the present invention;

Figure 2 illustrates an installation structure diagram of the light pipe of the present invention.

[0016] Wherein, 1 refers to a base-plate; 2 refers to a upper housing; 3 refers to a battery; 4 refers to a circuit board; 5 refers to a smoke collecting box; 5.1 refers to a first through-hole; 5.2 refers to a second through-hole; 6 refers to a mesh enclosure; 7 refers to a buzzer; 8 refers to a tune trope; 8.1 refers to a button column; 9 refers to a lower housing; 10 refers to a reset spring; 11 refers to a light pipe.

DETAILED DESCRIPTION

[0017] It is described clearly and entirely for the technical solution of the invention with the accompanying drawings. Obviously, the described embodiments of the invention are part of the embodiments. Based on the embodiments of the invention, all the other embodiments obtained by the people skilled in the art without creative effect fall in the scope of the invention.

[0018] It is noted that the embodiments and the features thereof can be combined with each other without conflicting.

[0019] Below is the illustration for the embodiments with the accompanying drawings:

As shown in Figure 1, a smoke alarm of one embodiment of the invention comprises: a base-plate 1, an upper housing 2, a battery 3, a circuit board 4, a smoke collecting box 5, a mesh enclosure 6, a buzzer 7, a tune trope 8 and a lower housing 9.

[0020] The upper housing 2 is detachably connected to the installation base-plate 1. The lower housing 9, the mesh enclosure 6 and the upper housing 2 are connected successively and form the housing. The battery 3, the circuit board 4, and the smoke collecting box 5, buzzer 7 and tune trope 8 are arranged downwards successively inside the housing as shown inside the figure.

[0021] Wherein, the smoke alarm further comprises a button column 8.1. The circuit board 4 is configured with a button module. The smoke collecting box 5 is configured with a first through-hole, and the button column 8.1 is configured slidably inside the first through-hole. One end of the button column 8.1 matches with the button module of the circuit board 4, and the another end of the button column 8.1 is connected with the tune trope 8.The tune trope 8 is configured slidably inside the housing, and the sliding direction of the tune trope 8 is the same as the sliding direction of the button column 8.1. Preferably, the sliding direction is the same as the arrangement direction of the extension direction of the housing, the circuit board 4, the smoke collecting box 5, the buzzer 7 and the tune trope 8 successively. The smoke alarm drives one end of the button column 8.1 through the sliding of the tune trope 8 to touch with the button module of the circuit board 4 to emit the button signal.

[0022] The present invention integrates the button to the tune trope 8, the tune trope 8 can also be used as a button, users can press the tune trope 8 directly in use, and the button column 8.1 which is located on the upper surface of the tune trope 8 will touch the button module on the circuit board 4, so that it provides the function of button, and reduce the components, make the structure more compact and the volume smaller.

[0023] As shown in figure 1, in one of the embodiments of the present invention, the smoke collecting box 5 is arranged at the central position of the annular mesh enclosure 6, which filters the impurities in the air that enters the smoke collecting box 5, and preferably, the mesh enclosure is welded by laser.

[0024] The circuit board 4, the smoke collecting box 5, the buzzer 7 and the tune trope 8 are arranged downwards successively inside the housing. The buzzer 7 is close to the upper end face of the tune trope 8, and the lower end face of the tune trope 8 is exposed outside the lower housing 9. The buzzer 7 is connected with circuit board 4, and makes sound through the control of the circuit board 4. The tune trope 8 amplifies and emits the sound.

[0025] A reset spring 10 is configured between the tune trope 8 and smoke collecting box 5. When the tune trope 8 is pressed, the button column 8.1 goes through the first through-hole 5.1 and touch with the button module of the circuit board 4 to emit the button signal. After pressing, cause of the reset spring 10, the tune trope 8 will reset to its original position.

[0026] Further combining with figure 2, in one of the embodiments of the present invention, the smoke alarm further comprises light pipe 11. The smoke collecting box 5 is also configured with a second though-hole 5.2. The light pipe 11 passes through the second through-hole 5.2. Preferably, the first through-hole 5.1 and the second through-hole 5.2 are parallel to each other.

[0027] One end of the light pipe 11 is connected with the LED light of the circuit board 4, and another end contacts with the upper surface of the tune trope. The place of the upper surface of tune trope 8 which contacts with the light pipe 11 is configured with a light transmitting shell, which is made by a material that has a good transparency, so that the light produced by LED is emitted to the light transmitting shell through the light pipe 11, and to the outside of the light transmitting shell through the light transmitting shell.

[0028] By using this kind of structure, there is no need to set the LED light on the exterior of the housing through a hole, and it only needs to emit the light of the LED light on the circuit board 4 to the surface of the tune trope 8 through light pipe 11.

[0029] As shown in figure 1, in one of the embodiments of the present invention, the place of the upper housing 2 which holds the battery 3 is configured with a battery jar for placing the battery 3. The outside surface of the bottom of the battery jar protrudes from the upper surface of the upper housing 2.

[0030] Since there is also a device in the upper housing for the upper housing 2 to fasten with the base-plate 1, the device is configured to protrude from the inside surface of the upper housing 2, and the outside surface of the bottom of the battery jar protrudes from the upper surface of the upper housing 2, and utilize the lateral space to hold the battery laterally to avoid the clip device inside the upper housing 2, and to make the structure compact and reduce the volume of the smoke alarm relevantly.

[0031] The description listed above is detailed description of embodiments of the invention. It should be understood that the invention is not limited by the above embodiments. Any changes and modifications of the invention fall in the scope of the application for the skilled in the art. Therefore the changes and modifications made without departing from the spirit and scope of the invention fall in the scope of the invention.

Claims

1. A smoke alarm comprising a housing, a circuit board (4), a smoke collecting box (5), a buzzer (7) and a tune trope (8); and
the circuit board (4), the smoke collecting box (5), the buzzer (7) and the tune trope (8) being arranged inside the housing successively;
wherein the smoke alarm also comprises a button column (8.1); the circuit board (4) is configured with a button module; the smoke collecting box (5) is configured with a first through-hole (5.1); the button column (8.1) is configured slidably inside the first through-hole (5.1); one end of the button column (8.1) matches with the button module on the circuit board (4); the another end of the button column (8.1) is connected with the tune trope (8); the tune trope (8) is configured slidably inside the housing; the sliding direction of the tune trope (8) is the same as the sliding direction of the button column (8.1); the smoke alarm drives one end of the button column (8.1) through the sliding of the tune trope (8) to touch with the button module of the circuit board (4) to emit the button signal.

2. The smoke alarm as disclosed in Claim 1, wherein the sectional area of the smoke collecting box (5) is equal to or smaller than the sectional area of the circuit board (4).

3. The smoke alarm as disclosed in Claim 2, wherein another end of the button column (8.1) is fixedly connected with the tune trope (8).

4. The smoke alarm as disclosed in Claim 3, wherein a reset spring (10) is configured between the tune trope (8) and smoke collecting box (5).

5. The smoke alarm as disclosed in Claim 1, wherein the housing comprises an upper housing (2) and a lower housing (9) which are both cylinder shape, and an annular mesh enclosure (6) for filtering air impurities is configured between the upper housing (2) and lower housing (9).

6. The smoke alarm as disclosed in Claim 5, wherein the mesh enclosure (6) is welding by laser.

7. The smoke alarm as disclosed in Claim 1, wherein the smoke alarm further comprises a light pipe (11) for transmitting light; one end of the light pipe (11) is connected with the LED light, and another end of the light pipe (11) communicates with the exterior of the housing, and it transmits the light to the exterior of the housing via the light pipe (11).

8. The smoke alarm as disclosed in Claim 7, wherein the tune trope (8) is further configured with a light transmitting shell; the smoke collecting box (5) is also configured a second through-hole (5.2), and the light pipe (11) is arranged inside the second through-hole (5.2); the another end of the light pipe (11) is connected with the light transmitting shell of the tune trope (8).

9. The smoke alarm as disclosed in Claim 1, wherein the smoke alarm further comprises a battery (3); the battery (3) is arranged between the circuit board (4) and the housing.

10. The smoke alarm as disclosed in Claim 9, wherein the housing is also configured with a battery jar which is coupled with the battery (3) and the battery jar protrudes from the outside surface of the housing.

Drawing