(19)
(11)EP 3 528 271 B1

(12)EUROPEAN PATENT SPECIFICATION

(45)Mention of the grant of the patent:
04.11.2020 Bulletin 2020/45

(21)Application number: 17861033.3

(22)Date of filing:  19.09.2017
(51)International Patent Classification (IPC): 
H01H 9/02(2006.01)
H01H 13/04(2006.01)
H01H 13/86(2006.01)
H01H 13/702(2006.01)
H01H 11/00(2006.01)
H01H 21/00(2006.01)
H01H 13/88(2006.01)
(86)International application number:
PCT/JP2017/033673
(87)International publication number:
WO 2018/070191 (19.04.2018 Gazette  2018/16)

(54)

RESIN STRUCTURE, ELECTRONIC DEVICE, AND PRODUCTION METHOD FOR RESIN STRUCTURE

HARZSTRUKTUR, ELEKTRONISCHE VORRICHTUNG UND HERSTELLUNGSVERFAHREN FÜR HARZSTRUKTUR

STRUCTURE EN RÉSINE, DISPOSITIF ÉLECTRONIQUE, ET PROCÉDÉ DE PRODUCTION DE STRUCTURE EN RÉSINE


(84)Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30)Priority: 14.10.2016 JP 2016202421

(43)Date of publication of application:
21.08.2019 Bulletin 2019/34

(73)Proprietor: Omron Corporation
Kyoto-shi, Kyoto 600-8530 (JP)

(72)Inventor:
  • KAWAI, Wakahiro
    Kyoto-shi, Kyoto 600-8530 (JP)

(74)Representative: Horn Kleimann Waitzhofer Patentanwälte PartG mbB 
Ganghoferstrasse 29a
80339 München
80339 München (DE)


(56)References cited: : 
JP-A- H05 135 651
JP-A- H11 162 286
JP-A- 2007 305 469
US-A- 3 830 991
US-A1- 2016 219 712
JP-A- H06 349 377
JP-A- 2003 165 357
JP-U- S5 521 391
US-A1- 2012 228 109
  
      
    Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).


    Description

    FIELD



    [0001] The present invention relates generally to a resin structure, an electronic device, and a method of manufacturing a resin structure. More specifically, the present invention relates to a package structure for the push-type switch that provides a click sensation when operated, and a method of manufacturing the package structure. The package structure is suitable for manufacturing an electronic device wherein the push-type switch is assembled with another electronic device.

    BACKGROUND



    [0002] A push-type switch may be used as a component that is made up of an electrical circuit. The push-type switch must provide a user with a sense of operating the device (a click sensation). The advantage is that provide a user with a sense of operating the device allows the user to reliably recognize having pressed a switch. For instance, a tactile switch is one such type of switch.

    [0003] The push-type switch is typically placed on a printed substrate that holds an electrical circuit; the push-type switch is for accepting an operation from a person and entering a signal into the electrical circuit. FIG. 13 is a top view for describing the typical package structure of a push-type switch; and FIG. 14 is a cross-sectional view of the cross-section XIV-XIV in the package structure depicted in FIG. 13.

    [0004] Referring to FIG. 13 and FIG. 14, the push-type switch 100 may be connected to another electronic component by soldering a connection 210 onto the printed circuit board 200 on which the relevant electronic component is mounted (not shown). The connection 210 connects terminals 110, 111 and the conductive circuitry 201 on the printed circuit board.

    [0005] The electronic device that uses the push-type switch 100 is further processed by assembling the printed circuit board 200 and a resin structure 320 provided with a hole 321 that can accommodate the push-type switch 100 internally; and a sheet 310 is bonded over the upper surface of the resin structure 320 to cover the hole 321.

    [0006] Incidentally, an electronic device thus configured is larger because the storage space (i.e., the hole 321) into which the push-type switch 100 is mounted must be wider; the manufacturing cost increases because the manufacturing process is more complicated since the sheet material 310 must be bonded to cover the storage space; or the electronic device loses its design flexibility. Finally, despite recent demand for thinner and more compact portable devices, the ability to provide these features has limitations since the printed substrate is used when assembling the push-type button switch with other electronic components

    [0007] For instance, Japanese Patent Publication 2003-165357 (FIG. 3B) proposes embedding the mechanical operational structure of the push-type switch into a resin structure as a means of either omitting the switch storage space, or the sheet material on the outer surface.

    Related Art Documents


    Patent Documents



    [0008] 

    Patent Document 1: JP 2003-165357A (FIG. 3B)

    Patent Document 2: JP H6-349377A (FIG. 3A)

    Patent Document 3: US 2012/228109 A1 (FIG. 1)


    SUMMARY


    Technical Problem



    [0009] Incidentally, JP 2003-165357 A provides no discussion in terms of the proposed method, on a means of assembling the push-type switch with another related component. If an existing printed substrate is used for configuring the electronic device, the assembly structure instead becomes more complicated.

    [0010] Moreover, the drive unit (button unit) for the push-type switch is embedded in an elastic resin such as a polyester elastomer in the device proposed by Japanese Patent Publication JP H6-349377A (FIG. 3A); JP H6-349377A further proposes a switch structure where the conductive part provided at tip end of the button unit allows electrical conduction to the conduction circuit provided on the printed substrate.

    [0011] The publication US 2012/228109 A1 discloses a resin structure comprising a molded resin element composed of an elastic material and a push-type sensor switch having a button unit protruding from a first surface of the moulded resin element. The resin structure is configured to elastically deform when the button receives pressure from its outer surface activating the push-type sensor switch.

    [0012] Incidentally, the switch structure proposed in said existing technology is problematic in that no click sensation is produced when the button unit is pressed, i.e., during the switching. Another issue is the increased manufacturing cost which is due to the need to align the conduction circuit provided on the printed substrate and the button unit circuitry. The printed substrate also remains an impediment to resolving the problem of providing a thinner profile.

    [0013] In light of the foregoing problems in the above-mentioned existing technology, the present invention provides for a compact, thin, electronic device that uses a push-type switch that provides a click sensation when pressed, which can be manufactured at low cost.

    SOLUTION TO PROBLEM



    [0014] In summary, the present invention is a resin structure including a molded resin element and a push-type switch. The push-type switch includes a first terminal and a second terminal configured to connect to an electrical circuit; a receptacle whereon the first terminal and the second terminal are secured; a button unit protruding from the receptacle; and a contact spring unit configured to move with the button unit, to electrically connect between the first terminal and the second terminal, and to generate an opposing force relative to a pressure applied between the receptacle and the button unit; the receptacle configured to store the button unit and the contact spring unit; and the receptacle of the push-type switch embedded in the molded resin element with the button unit exposed from the molded resin element.

    [0015] The molded resin element is composed of an elastic material. The resin structure includes a first outer surface where from the button unit is exposed, and a second outer surface facing the first outer surface; and the resin structure elastically deforms when the receptacle receives pressure from the second outer surface causing the receptacle to move from the second outer surface toward the first outer surface.

    [0016] The receptacle may be embedded in the molded resin element so that the button unit is receded from the first outer surface which surrounds the button unit in the molded resin element.

    [0017] The molded resin element may include a beam structure and a support supporting the beam structure. The push-type switch may be embedded in the beam structure of the molded resin element.

    [0018] The resin structure may further include: an electronic component embedded in the molded resin element and configured for electrically connecting to the push-type switch; and a conductive wiring pattern formed on the outer surface of the molded resin element and configured to connect the electrical component and the first terminal.

    [0019] In another aspect of the present invention an electronic device is provided with the above-mentioned resin structure, and a contacting part placed at the first outer surface of the molded resin element; and the molded resin element is configured to deform so that the button unit touches the contacting part when the receptacle receives pressure from the second outer surface.

    [0020] The contacting part may be a battery.

    [0021] Another aspect of the present invention provides for a method of manufacturing a resin structure with a push-type switch embedded in a molded resin element; The push-type switch includes a first terminal and a second terminal configured to connect to an electrical circuit; a receptacle whereon the first terminal and the second terminal are secured; a button unit protruding from the receptacle; and a contact spring unit configured to move with the button unit, to electrically connect between the first terminal and the second terminal, and to generate an opposing force relative to a pressure applied between the receptacle and the button unit; the receptacle configured to store the button unit and the contact spring unit; and the method of manufacturing the resin structure includes: placing the push-type switch in a mold with the mold pressing the button unit of the push-type switch toward the receptacle so that the button unit is separate from a cavity when the cavity is filled with resin; and injecting a resin into the cavity in the mold.

    Effects



    [0022] The present invention provides for a resin structure with a built-in switch where the resin structure establishes an operational feel for the switch and contributes to a compact and thin electronic device.

    BRIEF DESCRIPTION OF THE DRAWINGS



    [0023] 

    FIG. 1 is a plan view illustrating a configuration of a resin structure according to a first embodiment;

    FIG. 2 is a cross-sectional view along a cross section II-II in FIG. 1;

    FIG. 3 is a cross-sectional view illustrating a configuration of a push type switch 100 embedded in the resin structure 1;

    FIG. 4 is a cross-sectional view illustrating the deformation in the enclosure surrounding the push-type switch 100 when pressure is added to the resin structure 1;

    FIG. 5 is a first cross-sectional view for describing the manufacturing process;

    FIG. 6 is a second cross-sectional view for describing the manufacturing process;

    FIG. 7 is a third cross-sectional view for describing the manufacturing process;

    FIG. 8 is a fourth cross-sectional view for describing the manufacturing process;

    FIG. 9 is a fifth cross-sectional view for describing the manufacturing process;

    FIG. 10 is a plan view illustrating a configuration of a resin structure according to a second embodiment;

    FIG. 11 is a cross-sectional view along the cross section XI-XI in FIG. 10;

    FIG. 12 is a cross-sectional view illustrating how the beam structure warps in the resin structure 600 when the beam structure is subject to pressure;

    FIG. 13 is a top view for describing the typical package structure of a push-type switch; and

    FIG. 14 is a cross-sectional view along the cross section XIV-XIV in the package structure depicted in FIG. 13.


    DETAILED DESCRIPTION



    [0024] Embodiments of the present invention are described in detail with reference to the drawings. The same or corresponding elements within the drawings are given the same reference numerals and the explanations therefor are not be repeated.

    First Embodiment



    [0025] FIG. 1 is a plan view illustrating a configuration of a resin structure according to a first embodiment; and FIG. 2 is a cross-sectional view along a cross section II-II in FIG. 1.

    [0026] Referring to FIG. 1 and FIG. 2, the resin structure 1 is provided with a molded resin element 420, a push-type switch 100, and electronic components 430, 440. The push-type switch 100 is embedded in the molded resin elements 420 along with the electronic components 430, 440. The molded resin element 420 is an elastic material in the first embodiment, e.g., an elastomer that can be an injection molded component.

    [0027] FIG. 3 is a cross-sectional view illustrating a configuration of a push type switch 100 embedded in the resin structure 1. Referring to FIG. 3, the push-type switch 100 includes a first terminal 110 and a second terminal 111, a receptacle 140, a button unit 160, and a contact spring Unit 150.

    [0028] The receptacle 140 includes a base 130 and a cover 120. The first terminal 110 and the second terminal 111 are secured to the base 130 of the receptacle 140. The button unit 160 protrudes from the cover 120 of the receptacle 140 when not subject to pressure. The receptacle 140 houses the button unit 160 and the contact spring unit 150. The inner end parts of the first terminal 110 and the second terminal 111 are exposed as fixed contacts on the base 130 at the bottom of the storage space; the contact spring unit 150 operates as a movable contact. The cover 120 covers the base 130 from opposite the first terminal 110 and the second terminal 111 so that the button unit 160 and the contact spring unit 150 do not escape from the base 130.

    [0029] The contact spring unit 150 may be a metallic leaf spring, and configured to move with the button unit 160. The contact spring unit 150 may be curved with the convex portion toward slightly toward the button unit 160 to provide a click sensation when the button is pressed. The contact spring unit 150 electrically connects between the first terminal 110 and the second terminal 111 when the button unit is pressed and the bottom surface of the base 130 warps into a convex surface; additionally, the contact spring unit 150 is configured to generate an opposing force relative to the pressure 400 added between the base 130 and the button unit 160.

    [0030] Again with reference to FIG. 1, FIG. 2, and FIG. 3 the first terminal 110 and the second terminal 111 are connected to the electrical circuits at the outer surface of the molded resin element. The base 130 of the push-type switch 100 is embedded in the molded resin element 420 with the button unit 160 exposed from the molded resin element 420.

    [0031] The resin structure 1 further includes: an electronic component 430 that is embedded in the molded resin element 420 and can be electrically connected to the push-type switch 100; and a conductive wiring pattern 401 formed on the outer surface of the molded resin element 420 and connecting the electronic component and the first terminal 110.

    [0032] How the push-type switch 100 in the resin structure 1 thus configured creates a connection when pressure is added is described.

    [0033] FIG. 4 is a cross-sectional view illustrating the deformation in the enclosure surrounding the push-type switch 100 when pressure is added to the resin structure 1.

    [0034] Referring to FIG. 2 and FIG. 4 the resin structure 1 includes a first outer surface F1 and a second outer surface F2 that faces the first outer surface F1; the button unit 160 is exposed from the first outer surface F1. The base 130 is placed closer to the second outer surface F2 than the button unit 160 in the resin structure 1. The molded resin element 420 elastically deforms when the base 130 receives pressure 400 from the second outer surface F2, which causes the base 130 to move from the second outer surface F2 toward the first outer surface F1.

    [0035] An electronic device 2 is provided with the resin structure 1, and a contacting part 410 placed at the first outer surface F1 of the molded resin element. The contacting part 410 may be a battery, or another component such as an enclosure. However, the contacting part 410 is preferably of a material that has a lower elasticity than the molded resin element 420. The molded resin element 420 deforms so that the button unit 160 touches the contacting part 410 when the base 130 receives a pressure 400 from second outer surface F2 as illustrated in FIG. 4. The molded resin element 420 returns to the shape illustrated in FIG. 2 when the pressure 400 is removed.

    [0036] The base 130 is embedded in the molded resin element 420 so that with no pressure 400 applied, the button unit 160 is receded to a depth D1 from the first outer surface F1 which surrounds the button unit 160 in the molded resin element 420. The depth D1 is established to provide the most suitable click sensation and to ensure that the push-type switch 100 is not subject to an excessive force.

    [0037] A method of manufacturing the resin structure 1 is described next with reference to the cross-sectional view in FIG. 2 and the manufacturing processes depicted in FIG. 5 through FIG. 9.

    [0038] Referring to FIG. 2, the push-type switch 100 which is configured to provide a click sensation when the button unit 160 is pressed, is embedded in the molded resin element 420 of the resin structure 1 which is flexible and made of a polyester elastomer or the like. More specifically, the push-type switch 100 is embedded with the button unit 160 receded roughly 0.5 mm from the surface of the molded resin element 420, creating a step of a depth D1.

    [0039] The push-type switch 100 is wired with the conductive wiring patterns 401, 402 and connected to related components through the terminals 110, 111. The push-type switch 100 provides electrical switching between the conductive wiring pattern 401 and conductive wiring pattern 402, which contain silver nano-ink or the like, and are provided on the outer surface of the molded resin element. The related components, which are also embedded in the molded resin element 420 may be electronic components 430, 440 in a chip component such as a resistor, a capacitor, or the like.

    [0040] FIG. 5 is the first drawing for describing the manufacturing process.

    Step A



    [0041] The terminals 110, 111 of the push-type switch 100 and the electrodes of the electronic components 430, 4404 related components may be secured in contact with a temporary fixing film 500 using an adhesive agent. For example, polyethylene terephthalate (PET) film may be used as the temporary fixing film 500.

    [0042] At this point, the components may be adhered with the adhesive agent coated on the temporary fixing film 500. For example fixing may occur using an ultraviolet curable adhesive agent (not shown). More specifically, 2 to 3 µm of an adhesive agent may be coated onto of 50 µm of a PET temporary fixing sheet. The electronic components are positioned and placed; the adhesive agent is irradiated with ultraviolet light of 3000 mJ/cm2 and thus cured; herewith, an LED is secured to the temporary fixing film.

    [0043] FIG. 6 is the second drawing for describing the manufacturing process.

    Step B



    [0044] Next, the temporary fixing film 500 on which the electronic components are temporarily secured in Step A, is placed in a cavity 530 (hollow) inside molds 510, 520. At this point, the temporary fixing film 500 is placed in the cavity 530 so that the button unit 160 of the push-type switch 100 is positioned at a protrusion 511 in the cavity 530; the protrusion 511 is for creating the step in the molded resin element. The height of the protrusion 511 is established with the amount of protrusion of the button unit 160 in mind; more specifically, the height of the protrusion 511 may be a value defined by the height difference between the outer surface of the molded resin element and the apex of the button unit 160, e.g., 0.5 mm.

    [0045] FIG. 7 is the third drawing for describing the manufacturing process. As illustrated in FIG. 7, in Step B the push-type switch 100 is placed between molds 510, 520 while the protrusion 511 in the mold 510 presses the button unit 160 of the push-type switch 100 toward the base 130 so that the button unit 160 is separated from the cavity 530 when the cavity 530 is filled with resin.

    Step C



    [0046] Next, an epoxy elastomer, or the like is shot into the cavity 530 at a resin temperature of 270 °C and a pressure of 100 MPa with the components as depicted in FIG. 7 to create the molded resin element with the electronic components embedded therein. At this point, the protrusion 511 in the cavity is pressing against the button unit 160 of the push-type switch 100 in the direction of the arrow. However, the push-type switch 100 does not break as long as the height of the recess the button unit 160 touches due to the pressure from the protrusion 511 is very near the amount the button unit 160 is to protrude from the switch body.

    [0047] FIG. 8 is the fourth drawing for describing the manufacturing process.

    Step D



    [0048] The molded resin element 420 formed in Step C is extracted from the cavity 530; and, as illustrated in FIG. 8, the temporary fixing film 500 is removed from the molded resin element 420. The terminals 110, 111 of the push-type switch 100 and the connection electrodes of the electronic components are thus exposed from the outer surface of the molded resin element 420.

    [0049] At this stage, without the protrusion 511 of the mold, the contact spring unit 150 in the push-type switch 100 returns the button unit 160 in the push-type switch 100 in the direction of the arrow; the button unit 160 is inside a recess 450 created inside the molded resin element 420. Here, the button unit 160 is receded a prescribed value below the outer surface of the molded resin element 420, e.g., 0.5 mm.

    [0050] FIG. 9 is the fifth drawing for describing the manufacturing process.

    Step E



    [0051] Finally, the terminals of the push-type switch 100, which are exposed from the outer surface of the molded resin element, and the connection electrodes of the electronic components 430, 440 are connected via the conductive wiring patterns 401, 402 as illustrated in FIG. 9, and the resin structure 1 according to the embodiment is thus complete. At this point conductive wiring patterns 401, 402 may be produced by using an ink-jet printer to inject and print a conductive material (e.g., silver ink); using an aerosol method; or using a dispenser.

    [0052] The embedded structure of a switch of the above-described embodiment allows conduction between circuits (the conductive wiring patterns 401, 402) on the outer surface of the molded resin element 420. More specifically, when the push-type switch 100 embedded in the molded resin element 420 is pressed in the direction of the pressure 400, the flexible molded resin element 420 made of elastomer deforms until the button unit 160 touches and presses into a contacting part 410 secured to a battery or the like, thus creating a connection between the circuits on the outer surface of the molded resin element 420. At this point the amount the molded resin element deforms varies depending on the height of the protrusion 511 inside the cavity in FIG. 7. This height, that is, the difference in height between the apex of the button unit 160 and the outer surface of the molded resin element determines the operating feel of the switch.

    [0053] One feature of the resin structure 1 of this embodiment is that the switch may be activated by pressing from the terminal side (terminal 110, 111) of the push-type switch 100. That is, unlike a typical switch where the button unit 160 is pressed, this push-type switch can be activated by the pressure from the wired side of the printed substrate or the like.

    [0054] In other words, as described with reference to FIG. 4, when the push-type switch 100 is pressed from the direction of the pressure 400, the base 130 of the push-type switch 100 travels in the direction it is pressed with the deformation of the flexible molded resin element 420 into which it is embedded, and the button unit 160 touches and presses against the contacting part 410. The electrical conduction between the terminal 110 and the terminal 111 may thus be activated or deactivated.

    [0055] The resin structure 1 of the first embodiment provides the following effects (1) through (3) in terms of compactness, and thinness of the electronic device.
    1. (1) The resin structure provides the same click sensation as that of a typical push-type switch since the button unit 160 and the contact spring unit 150 are pressed in at the same time.
    2. (2) There is no need to create a space for a hole 321 or the like (FIG. 14) in the mold to embed the push-type switch 100 in the molded resin element 420.
    3. (3) No other materials, such as a printed substrate, are needed for connecting the push-type switch 100 and other related components during assembly.
      The following kinds of effects (4) and (5) are also present.
    4. (4) The resin structure provides a better design because the side of the resin structure that is subject to the pressure 400 during switching has no recess or projection, i.e., is it is a flat surface.
    5. (5) The typical push-type switch is structured with an internal space as illustrated in FIG. 14; therefore, a resin material or the like must be added around the element to seal it against moisture or water. However, the push-type switch 100 is embedded into a molded resin element 420 in the resin structure 1 according to the embodiment. The molded resin element 420 also acts as a seal, removing the need for a seal as is the case with conventional structures.

    Second Embodiment



    [0056] The first embodiment describes using the highly elastic polyester elastomer for the molded resin element wherein the push-type switch 100 is embedded; however, a case where a material with a lower elasticity than polyester elastomer is used, such as a polycarbonate (PC) or acrylonitrile-butadiene-styrene (ABS), is described.

    [0057] FIG. 10 is a plan view illustrating a configuration of a resin structure according to a second embodiment; and FIG. 11 is a cross-sectional view along the cross section XI-XI in FIG. 10.

    [0058] Referring to FIG. 10 and FIG. 11, the resin structure 600 is provided with a molded resin element 670, the push-type switch 100, and electronic components 620, 630. The push-type switch 100 is embedded in the molded resin elements 670 along with the electronic components 620, 630.

    [0059] The molded resin element 670 includes a beam structure 601, and a support 602 supporting the beam structure 601. The push-type switch 100 is embedded in the beam structure 601 of the molded resin element 670. The base 130 of the push-type switch 100 is embedded in the molded resin element 670 with the button unit 160 exposed therefrom.

    [0060] The molded resin element 670 is composed of a material with a relatively low elasticity (e.g., PC resin, or ABS resin).

    [0061] FIG. 12 is a cross-sectional view illustrating how the beam structure warps when the beam structure is subject to pressure in the resin structure 600. Referring to FIG. 11, and FIG. 12, the resin structure 600 includes a contacting part 690, such as a battery or housing, and an electronic device 692.

    [0062] The resin structure 600 includes a first outer surface F11 and a second outer surface F12 that faces the first outer surface F11; the button unit 160 is exposed from the first outer surface F11. The base 130 is placed closer to the second outer surface F12 than the button unit 160 in the resin structure 600. When the second outer surface F12 places a pressure 680 on the base portion of the beam structure 601 in the molded resin element 670, the beam structure 601 elastically deforms, which causes the base 130 to move from the second outer surface F12 toward the first outer surface F11. The beam structure 601 returns to its original state once the pressure 680 is removed.

    [0063] The push-type switch 100 is embedded in, for instance, a polycarbonate (PC) molded resin element 670 so that the button unit 160 protrudes from the outer surface of the molded resin element 670 in the resin structure 600 as illustrated in FIG. 11. The push-type switch 100 is embedded where the molded resin element 670 warps and deforms when the pressure 680 is applied thereto. That is, the resin material used for the molded resin element in the second embodiment, e.g., PC, or ABS has a lower elasticity than the elastomer used in the first embodiment;therefore, it is the beam structure 601, which allows the molded resin element to warp, which creates and maintains the amount of movement (stroke) of the button unit 160 on the push-type switch 100.

    [0064] As illustrated in FIG. 12, the resin structure 600 of the second embodiment is configured such that the push-type switch 100 embedded in the beam structure 601 of the molded resin element 670 may be subject to a pressure 680 causing the beam structure 601 to deform to a point where the button unit 160 touches and presses against a fixed contacting part 690, e.g., a battery, or the like. Here, the button unit 160 activates or deactivates the electrical conduction between the conductive wiring patterns 610, 611 on the outer surface of the molded resin element 670. The amount of warp of the beam structure 601 in the molded resin element 670 at this point may be adjusted by moving where the push-type switch 100 is embedded, or changing the resin thickness of the beam structure 601. And, the amount of warp of the beam structure 601 may be used to adjust the operational feel of the push-type switch.

    [0065] While in this embodiment the beam structure provided in the molded resin element is cantilevered, the push-type switch 100 may be embedded at the center of the beam when the beam structure is such that the beam is supported at both ends.

    [0066] All aspects of the embodiment disclosed should be considered merely examples and not limitations as such. The scope of the present invention is not limited to the above description, but to the scope of the appended claims.

    REFERENCE NUMERALS



    [0067] 
    1, 600
    Resin structure
    2, 692
    Electronic device
    100
    Push-type switch
    110, 111
    Terminal
    120
    Cover
    130
    Base
    150
    Contact spring unit
    160
    Button unit
    200
    Printed circuit board
    201
    Conductive circuitry
    210
    Solder
    310
    Sheet material
    320, 420, 670
    Molded resin element
    321
    Hole
    400, 680
    Pressure
    401, 402, 610, 611
    Conductive wiring pattern
    410, 690
    Contacting part
    430, 440, 620, 630
    Electronic component
    500
    Temporary fixing film
    510, 520
    Mold
    511
    Protrusion
    530
    Cavity
    601
    Beam structure
    602
    Support



    Claims

    1. A resin structure (1, 600) comprising:

    a molded resin element (320, 420, 670); and

    a push-type switch (100); the push-type switch (100) including:

    a first terminal (110) and a second terminal (111) configured to connect to an electrical circuit;

    a receptacle (140) to which the first and second terminal (111) are secured;

    a button unit (160) protruding from the receptacle (140); and

    a contact spring unit (150) configured to move together with the button unit (160), to electrically connect between the first terminal (110) and the second terminal (111), and to generate an opposing force relative to a pressure applied between the receptacle (140) and the button unit (160);

    the receptacle (140) configured to store the button unit (160) and the contact spring unit (150); and

    the receptacle (140) of the push-type switch (100) embedded in the molded resin element (320, 420, 670) with the button unit (160) exposed from the molded resin element (320, 420, 670);

    the molded resin element (320, 420, 670) composed of an elastic material;

    the resin structure (1, 600) including a first outer surface (F1, F11) wherefrom the button unit (160) is exposed, and a second outer surface (F2, F12) facing the first outer surface (F1, F11); and

    the resin structure (1, 600) configured to elastically deform when the receptacle (140) receives pressure from the second outer surface (F2, F12) causing the receptacle (140) to move from the second outer surface (F2, F12) toward the first outer surface (F1, F11).


     
    2. The resin structure (1, 600) according to claim 1, wherein the receptacle (140) is embedded in the molded resin element (320, 420, 670) so that the button unit (160) is receded from the first outer surface (F1, F11) which surrounds the button unit (160) in the molded resin element (320, 420, 670).
     
    3. The resin structure (1, 600) according to claim 1, wherein the molded resin element (320, 420, 670) includes:

    a beam structure (601); and

    a support (602) supporting the beam structure (601); wherein

    the push-type switch (100) is embedded in the beam structure (601) of the molded resin element (320, 420, 670).


     
    4. The resin structure (1, 600) according to any one of claims 1 to 3, further comprising:

    an electronic component (430, 440, 620, 630) embedded in the molded resin element (320, 420, 670) and configured for electrically connecting to the push-type switch (100); and

    a conductive wiring pattern (401, 402, 610, 611) formed on the outer surface of the molded resin element (320, 420, 670) and configured to connect the electronic component430, 440, 620, 630 and the first terminal (110).


     
    5. An electronic device comprising: the resin structure (1, 600) according to claim 1; and
    a contacting part (410, 690) placed at the first outer surface (F1, F11) of the molded resin element (320, 420, 670); wherein
    the molded resin element (320, 420, 670) is configured to deform so that the button unit (160) touches the contacting part (410, 690) when the receptacle (140) receives pressure from the second outer surface (F2, F12).
     
    6. The electronic device according to claim 5, wherein the contacting part (410, 690) is a battery.
     
    7. A method of manufacturing the resin structure (1, 600) according to claim 1, the method of manufacturing the resin structure (1, 600) comprising:

    placing the push-type switch (100) in a mold with the mold pressing the button unit (160) of the push-type switch (100) toward the receptacle (140) so that the button unit (160) is separate from a cavity when the cavity is filled with resin; and

    injecting a resin into the cavity in the mold.


     


    Ansprüche

    1. Harzstruktur (1, 600), umfassend:

    ein gegossenes Harzelement (320, 420, 670); und

    einen druckartigen Schalter (100), wobei der druckartige Schalter (100) umfasst:

    einen ersten Anschluss (110) und einen zweiten Anschluss (111), die geeignet sind, mit einer elektrischen Schaltung verbunden zu sein;

    eine Aufnahme (140), an der der erste und der zweite Anschluss (111) befestigt sind;

    eine Tasteneinheit (160), die von der Aufnahme (140) absteht; und

    eine Kontaktfedereinheit (150), die geeignet ist, sich zusammen mit der Tasteneinheit (160) zu bewegen, um eine elektrische Verbindung zwischen dem ersten Anschluss (110) und dem zweiten Anschluss (111) herzustellen, und eine entgegengesetzte Kraft relativ zu einem zwischen der Aufnahme (140) und der Tasteneinheit (160) ausgeübten Druck zu erzeugen;

    wobei die Aufnahme (140) geeignet ist, die Tasteneinheit (160) und die Kontaktfedereinheit (150) aufzunehmen; und

    die Aufnahme (140) des druckartigen Schalters (100) in dem gegossenen Harzelement (320, 420, 670) eingebettet ist, wobei die Tasteneinheit (160) vom gegossenem Harzelement (320, 420, 670) freiliegt;

    wobei das gegossene Harzelement (320, 420, 670) aus einem elastischen Material besteht;

    wobei die Harzstruktur (1, 600) eine erste Außenfläche (F1, F11), von der die Tasteneinheit (160) freiliegt, und eine zweite Außenfläche (F2, F12) aufweist, die der ersten Außenfläche (F1, F11) zugewandt ist; und

    die Harzstruktur (1, 600) geeignet ist, sich elastisch zu verformen, wenn die Aufnahme (140) Druck von der zweiten Außenfläche (F2, F12) erhält, durch welchen die Aufnahme (140) sich von der zweiten Außenfläche (F2, F12) in Richtung der ersten Außenfläche (F1, F11) bewegt.


     
    2. Harzstruktur (1, 600) nach Anspruch 1, wobei die Aufnahme (140) in dem gegossenen Harzelement (320, 420, 670) eingebettet ist, so dass die Tasteneinheit (160) von der ersten Außenfläche (F1, F11), die die Tasteneinheit (160) in dem gegossenen Harzelement (320, 420, 670) umgibt, zurückversetzt ist.
     
    3. Harzstruktur (1, 600) nach Anspruch 1, wobei das gegossene Harzelement (320, 420, 670) umfasst:

    eine Balkenstruktur (601); und

    einen Träger (602), der die Trägerstruktur (601) trägt; wobei

    der druckartige Schalter (100) in die Balkenstruktur (601) des gegossenen Harzelements (320, 420, 670) eingebettet ist.


     
    4. Harzstruktur (1, 600) nach einem der Ansprüche 1 bis 3, ferner umfassend:

    eine elektronische Komponente (430, 440, 620, 630), die in dem gegossenen Harzelement (320, 420, 670) eingebettet und zur elektrischen Verbindung mit dem druckartigen Schalter (100) geeignet ist; und

    ein leitendes Anschlussmuster (401, 402, 610, 611), das auf der Außenfläche des gegossenen Harzelements (320, 420, 670) ausgebildet und geeignet ist, die elektronische Komponente (430, 440, 620, 630) und den ersten Anschluss (110) zu verbinden.


     
    5. Elektronische Vorrichtung, umfassend:

    die Harzstruktur (1, 600) nach Anspruch 1; und

    ein Kontaktteil (410, 690), das an der ersten Außenfläche (F1, F11) des gegossenen Harzelements (320, 420, 670) angeordnet ist; wobei

    das gegossene Harzelement (320, 420, 670) geeignet ist, sich zu verformen, so dass die Tasteneinheit (160) das Kontaktteil (410, 690) berührt, wenn die Aufnahme (140) Druck von der zweiten Außenfläche (F2, F12) erhält.


     
    6. Elektronisches Vorrichtung nach Anspruch 5, wobei das Kontaktteil (410, 690) eine Batterie ist.
     
    7. Verfahren zur Herstellung der Harzstruktur (1, 600) nach Anspruch 1, wobei das Verfahren zur Herstellung der Harzstruktur (1, 600) umfasst:

    Platzieren des druckartigen Schalters (100) in eine Form, wobei die Form die Tasteneinheit (160) des druckartigen Schalters (100) in Richtung der Aufnahme (140) drückt, so dass die Tasteneinheit (160) von einem Hohlraum getrennt ist, wenn der Hohlraum mit Harz gefüllt ist; und

    Einspritzen eines Harzes in den Hohlraum in der Form.


     


    Revendications

    1. Structure de résine (1, 600) comprenant :

    un élément en résine moulé (320, 420, 670) ; et

    un interrupteur de type poussoir (100) ; l'interrupteur de type poussoir (100) comprenant :

    une première borne (110) et une deuxième borne (111) configurées pour être connectées à un circuit électrique ;

    un réceptacle (140) auquel sont fixées la première et la deuxième borne (111) ;

    une unité de bouton (160) dépassant du réceptacle (140) ; et

    une unité de ressort de contact (150) configurée pour se déplacer avec l'unité de bouton (160), pour établir une connexion électrique entre la première borne (110) et la deuxième borne (111), et pour générer une force opposée à une pression appliquée entre le réceptacle (140) et l'unité de bouton (160) ;

    le réceptacle (140) étant configuré pour stocker l'unité de bouton (160) et l'unité de ressort de contact (150) ; et

    le réceptacle (140) de l'interrupteur de type poussoir (100) est encastré dans l'élément en résine moulé (320, 420, 670) avec l'unité de bouton (160) exposée de l'élément en résine moulé (320, 420, 670) ;

    l'élément en résine moulé (320, 420, 670) est composé d'un matériau élastique ;

    la structure de résine (1, 600) comprenant une première surface extérieure (F1, F11) depuis laquelle l'unité de bouton (160) est exposée, et une deuxième surface extérieure (F2, F12) faisant face à la première surface extérieure (F1, F11) ; et

    la structure de résine (1, 600) est configurée pour se déformer élastiquement lorsque le réceptacle (140) reçoit une pression de la deuxième surface extérieure (F2, F12), ce qui provoque le déplacement du réceptacle (140) de la deuxième surface extérieure (F2, F12) vers la première surface extérieure (F1, F11).


     
    2. Structure de résine (1, 600) selon la revendication 1, dans laquelle le réceptacle (140) est encastré dans l'élément en résine moulé (320, 420, 670) de sorte que l'unité de bouton (160) soit en retrait par rapport à la première surface extérieure (F1, F11) qui entoure l'unité de bouton (160) dans l'élément en résine moulé (320, 420, 670).
     
    3. Structure de résine (1, 600) selon la revendication 1, dans laquelle l'élément en résine moulé (320, 420, 670) comprend :

    une structure de poutre (601) ; et

    un support (602) supportant la structure de poutre (601) ; dans lequel l'interrupteur de type poussoir (100) est encastré dans la structure de poutre (601) de l'élément en résine moulé (320, 420, 670).


     
    4. Structure en résine (1, 600) selon l'une quelconque des revendications 1 à 3, comprenant en outre :

    un composant électronique (430, 440, 620, 630) incorporé dans l'élément en résine moulé (320, 420, 670) et configuré pour être connecté électriquement à l'interrupteur de type poussoir (100) ; et

    un motif de câblage conducteur (401, 402, 610, 611) formé sur la surface extérieure de l'élément en résine moulé (320, 420, 670) et configuré pour connecter le composant électronique (430, 440, 620, 630) et la première borne (110).


     
    5. Dispositif électronique comprenant : la structure en résine (1, 600) selon la revendication 1 ; et
    une partie de contact (410, 690) placée sur la première surface extérieure (F1, F11) de l'élément en résine moulé (320, 420, 670) ; dans laquelle
    l'élément en résine moulé (320, 420, 670) est configuré pour se déformer de telle sorte que l'unité de bouton (160) touche la partie en contact (410, 690) lorsque le réceptacle (140) reçoit une pression de la deuxième surface extérieure (F2, F12).
     
    6. Dispositif électronique selon la revendication 5, dans lequel la partie de contact (410, 690) est une pile.
     
    7. Procédé de fabrication de la structure en résine (1, 600) selon la revendication, le procédé de fabrication de la structure en résine (1, 600) comprenant :

    placer l'interrupteur de type poussoir (100) dans un moule, le moule pressant l'unité de bouton (160) de l'interrupteur de type poussoir (100) vers le réceptacle (140) de sorte que l'unité de bouton (160) soit séparée d'une cavité lorsque la cavité est remplie de résine ; et

    injecter une résine dans la cavité du moule.


     




    Drawing




















    Cited references

    REFERENCES CITED IN THE DESCRIPTION



    This list of references cited by the applicant is for the reader's convenience only. It does not form part of the European patent document. Even though great care has been taken in compiling the references, errors or omissions cannot be excluded and the EPO disclaims all liability in this regard.

    Patent documents cited in the description