JP2011253685A - Push button type switch device and operation panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain good click feeling regardless of an operation position of a key top.SOLUTION: The push-button type switch device comprises a printed wiring board 10; an operating member 40 to be pushed; a membrane switch 20 installed on a surface of the printed wiring board 10 and actuated by pushing operation of the operating member 40; an elastic member 50 interposed between the printed wiring board 10 and the operating member 40, and elastically deformed by the pushing operation to add reaction force of non-linear shape corresponding to the elastic deformation to the operating member 40; a housing 30 raised and fixed on the printed wiring board 10 so as to surround a contact 21 of the membrane switch 20; and a moving member 60 movably supported by the housing 30, and acting with the operating member 40 upon the pushing operation of the operating member 40 to regulate a moving direction of the operating member 40.

Description

  The present invention relates to a push button switch device and an operation panel mounted on a printed wiring board.

  Conventionally, a rubber contact switch is known as a push button type switch device mounted on a printed wiring board (see, for example, Patent Document 1). In the switch device described in Patent Document 1, an electrode is provided on the bottom surface of the movable portion of the rubber contact switch formed in a hollow shape, and an electrode is disposed on the upper surface of the printed wiring board so as to face the electrode, thereby providing a contact portion. The rubber contact switch is configured to be elastically deformed by operating the key top, so that a unique operability with a click feeling is obtained when the contact portion is closed.

Japanese Patent Laid-Open No. 11-306900

  However, in the device described in Patent Document 1, for example, when the key top is formed in an oval shape and the end of the key top is pressed, the key top is tilted and a pressing force acts on the rubber contact switch in an oblique direction. . For this reason, variation occurs in the circumferential deformation of the rubber contact switch, and a good click feeling may not be obtained.

The present invention includes a printed wiring board, an operation member to be pressed, a switch member that is mounted on the surface of the printed wiring board and is operated by a pressing operation of the operation member, and is interposed between the printed wiring board and the operation member. Applied to a push button type switch device that is elastically deformed by a pressing operation of the operation member and that provides a non-linear repulsive force corresponding to the elastic deformation to the operation member, and the switch member is constituted by a membrane switch A housing that is erected and fixed to the printed wiring board so as to surround the contact portion of the membrane switch, and is movably supported by the housing and operates together with the operation member when the operation member is pressed. And a movable member that restricts the movement direction of the operation member so as to move in a direction perpendicular to the printed wiring board.
An operation panel according to the present invention is provided with a plurality of the above-described push button type switch devices.

  According to the present invention, the movement direction during the pressing operation of the operation member is regulated so that the operation member moves in the vertical direction with respect to the printed wiring board, so that the elastic body between the printed wiring board and the operation member Can be elastically deformed uniformly in the circumferential direction, and a good click feeling during a pressing operation can be obtained.

1 is an exploded perspective view of a pushbutton switch device according to a first embodiment of the present invention. It is a longitudinal cross-sectional view of FIG. It is a top view of the key top of FIG. (A), (b) is a figure which shows the assembly procedure of the pushbutton type switch apparatus of FIG. 1, respectively. It is a figure which shows the modification of FIG. It is a disassembled perspective view of the pushbutton type switch apparatus which concerns on the 2nd Embodiment of this invention. It is a longitudinal cross-sectional view of FIG. It is a top view of the operation panel which concerns on embodiment of this invention. (A), (b) is a figure which shows the modification of FIG. 4, respectively.

-First embodiment-
Hereinafter, a pushbutton switch device according to a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is an exploded perspective view showing the entire configuration of a pushbutton switch device 100 according to the first embodiment of the present invention, and FIG. 2 is a longitudinal sectional view of the pushbutton switch device 100. In the following, for convenience, the vertical direction and the front / rear / left / right direction are defined as shown, and the configuration of each part will be described according to this definition.

  The switch device 100 according to the first embodiment includes a printed wiring board 10, a membrane switch 20 mounted on the surface of the printed wiring board 10, a housing 30 erected above the printed wiring board 10, and a press The key top 40 to be operated, the cup rubber 50 disposed between the printed wiring board 10 and the key top 40, the slider 60 slidably supported by the housing 30, and the upper cover covering the periphery of the key top 40 70.

  The printed wiring board 10 (also referred to as a printed board) is an insulative board formed with an electric circuit having a conductive wiring pattern, and is a rigid board rather than a flexible board. The printed wiring board 10 has a plurality of through holes 11 for fixing the housing 30. In the figure, the printed wiring board 10 is configured in accordance with the size of the key top 40. However, the printed wiring board 10 can be enlarged in the front-rear and left-right directions to mount various electronic components (not shown). .

  The membrane switch 20 is disposed between a pair of contact points 21 disposed vertically opposite to each other, a pair of sheet substrates 22 each carrying the pair of contact points 21, and the pair of sheet substrates 22. And a spacer (not shown) that holds both the contacts 21 in an open state with a predetermined distance therebetween. In the sheet substrate 22, a plurality of through holes 23 are formed around the contacts 21 corresponding to the through holes 11 of the printed wiring board 10. The through hole 23 is larger than the through hole 11.

  Each sheet substrate 22 has a configuration of a known flexible printed circuit board, and contacts 21 that can be short-circuited to each other are provided on the surface of the film substrate. The contact 21 is disposed below the slide hole 33 of the housing 30, and the contact 21 is closed when a predetermined pressing force is applied to the contact 21 by pressing down the key top 40. The sheet substrate 22 is disposed on the printed wiring board 10 and is fixed to the printed wiring board 10 with screws or the like (not shown).

  The housing 30 includes a substantially rectangular base 31 and a guide 32 erected on the base 31. The base 31 has a stepped shape in the height direction, and the length of the upper part of the base 31 in the front / rear / left / right direction is shorter than the length of the lower part of the base 31 in the front / rear / left / right direction. The guide 32 has a cylindrical outer peripheral surface, and a slide hole 33 having a rectangular cross section is opened through the guide 32 in the vertical direction. A plurality of legs 34 project downward from the bottom surface of the base 31. The housing 30 described above is formed by integral molding using resin as a constituent material.

  The key top 40 is a frame member having an oval shaped operation part 41 and a side wall 42 extending downward from the periphery of the operation part 41 and having an open bottom surface. FIG. 3 is a plan view of the key top 40. As shown in FIGS. 2 and 3, on the inner side of the key top 40, ribs 43 extend from one end portion in the front-rear direction to the other end portion of the side wall 42 along the back surface of the operation portion 41 and from one end portion in the left-right direction to the other end portion. It extends (only the left and right ribs 43 are shown in FIG. 2). A box-shaped frame portion 44 is formed at the intersection of the front-rear rib 43 and the left-right rib 43 in accordance with the outer shape of the slider 60, and the lower end portion of the frame portion 44 is located in the inner space of the frame portion 44. A projecting portion 43a is provided so as to project. The key top 40 is formed by integral molding using resin as a constituent material.

  The cup rubber 50 includes a flat plate portion 51 having an oval shape substantially the same as the key top 40, a belt-shaped peripheral wall portion 52 projecting upward from the outer peripheral edge of the plate portion 51, and the plate portion 51. And a dome portion 53 that bulges upward from the center. A cylindrical press-fit portion 54 is formed at the upper portion of the dome portion 53, and a space portion 55 having an open top and bottom surface is formed inside the dome portion 53. The housing 30 is accommodated in the space 55. When a pressing force acts on the dome portion 53 via the press-fit portion 54, the dome portion 53 is elastically deformed, and a non-linear repulsive force against the pressing force is applied to the key top 40. The above cup rubber 50 is formed by integral molding from a rubber material.

  The slider 60 has a double cylinder structure having an inner cylinder 61 extending in the vertical direction and an outer cylinder 62 extending in the vertical direction outside the inner cylinder 61. The inner cylinder 61 and the outer cylinder 62 are integrated via a top horizontal portion 63, and a space portion 64 having an open bottom surface is formed between the inner cylinder 61 and the outer cylinder 62. The inner cylinder 61 is longer than the outer cylinder 62, and the inner cylinder 61 protrudes downward from the lower end of the outer cylinder 62.

  The inner cylinder 61 has a substantially box-shaped outer shape corresponding to the slide hole 33, and a lower hole 61a having a predetermined length is formed on the upper surface thereof downward. A fitting groove 61 b is provided on the bottom surface of the inner cylinder 61, and a coil spring 66 is press-fitted into the fitting groove 61 b from below, and the coil spring 66 is integrally attached to the slider 60. The outer cylinder 62 has a substantially box-shaped outer shape. The outer surface of the outer tube 62 is provided with an elongated protrusion 62a in the vertical direction, and the bottom surface is provided with a circular ring portion 65 protruding outward in the horizontal direction. Yes. The ring portion 65 is press-fitted into the press-fit portion 54 of the cup rubber 50. The slider 60 described above is formed by integral molding using resin as a constituent material.

  The upper cover 70 includes an upper plate 71 in which an oval opening 70a that is slightly larger than the key top 40 is formed, and a cylindrical peripheral wall 72 that extends downward from the opening 70a. The peripheral wall portion 72 is fitted to the inner peripheral surface of the peripheral wall portion 52 of the cup rubber 50 without a gap, thereby preventing water droplets from entering the back side of the cup rubber 50. The above upper cover 70 is formed by integral molding using resin as a constituent material.

  The assembly procedure of the push button type switch device 100 will be described. With the sheet substrate 22 of the membrane switch 20 disposed on the printed wiring board 10, the legs 34 of the housing 30 are passed through the through holes 23 of the sheet substrate 22 and the through holes 11 of the printed wiring board 10, and the housing 30 is printed. Stands on the plate 10. Next, the cup rubber 50 is covered from above the housing 30 to fix the cup rubber 50 on the sheet substrate 22, and the housing 30 is accommodated in the space 55 in the cup rubber 50. Further, the peripheral wall portion 72 of the upper cover 70 is fitted to the peripheral wall portion 52 of the cup rubber 50 from above, the lower end surface of the peripheral wall portion 72 is pressed against the upper surface of the dish portion 51 of the cup rubber 50, and the upper cover 70 and the sheet substrate The cup rubber 50 is sandwiched between the two.

  Next, the ring portion 65 of the slider 60 is press-fitted into the press-fit portion 54 of the cup rubber 50 while the inner cylinder 61 of the slider 60 into which the coil spring 66 has been press-fitted is fitted into the slide hole 33 of the housing 30. And the press-fit portion 54 are brought into close contact with each other, and the slider 60 is attached to the cup rubber 50 integrally. At this time, the guide 32 of the housing 30 is fitted into the space 64 between the inner cylinder 61 and the outer cylinder 62 of the slider 60. Further, the frame portion 44 on the bottom surface of the key top 40 is fitted to the upper portion of the slider 60, and the projection 43 a of the rib 43 of the key top 40 is engaged with the lower side of the projection 62 a of the slider 60. Is integrally attached to the slider 60.

  Finally, the tip of the leg 34 of the housing 30 is caulked to fix the housing 30 to the printed wiring board 10. 4A and 4B are cross-sectional views (partially enlarged view) of the switch device 100 before and after crimping, respectively. As shown in FIG. 4A, the leg 34 of the housing 30 is provided with a large-diameter portion 34a at the top and a small-diameter portion 34b at the bottom. The large diameter portion 34 a has a smaller diameter than the through hole 23 of the membrane switch 20, and the lower end surface of the large diameter portion 34 a is in contact with the upper surface of the printed wiring board 10 through the through hole 23. As a result, it is possible to prevent the caulking pressure from acting on the membrane switch 20.

  The through hole 11 of the printed wiring board 10 has substantially the same diameter as the small diameter part 34 b, the small diameter part 34 b penetrates the through hole 11, and the tip part protrudes from the bottom surface of the printed wiring board 10. The tip end of the leg 34 is heated and caulked, for example. That is, it is heat caulked. 3B, the housing 30 is positioned in the through hole 11 and can be fixed to the printed wiring board 10 without rattling. The slide hole 33 of the housing 30 can be accurately positioned above the contact 21. .

  Note that the assembly procedure of the switch device 100 is not limited to that described above. For example, the cup rubber 50 may be attached after the housing 30 is caulked. After the slider 60 is fitted to the frame portion 44 of the key top 40, the slider 60 may be press-fitted into the cup rubber 50 together with the key top 40. After the slider 60 is press-fitted into the cup rubber 50, the cup rubber 50 may be attached to the sheet substrate 22 integrally with the slider 60. The upper cover 70 may be attached last.

  The main operation of the switch device 100 according to the first embodiment will be described. When the key top 40 is not operated, the key top 40 is pushed up together with the slider 60 by the elastic force of the cup rubber 50, and the upper surface of the key top 40 is in an initial position protruding from the upper surface of the upper rubber 70. At this time, the lower end surface of the coil spring 66 is positioned above the contact 21 of the membrane switch 20, and the contact 21 is opened (off).

  When the key top 40 is pressed from this state, the slider 60 moves vertically downward along the slide hole 33 at the center of the housing 30, and the lower end portion of the coil spring 66 approaches the contact 21. When the key top 40 is pushed down by a predetermined amount or more, the lower end of the coil spring 66 comes into contact with the contact 21. Thereafter, when the key top 40 is further pushed down, the coil spring 60 is retracted and a spring force is applied to the contact 21, and the contact 21 is closed (turned on).

  At this time, even if the end of the ellipse of the key top 60 is pressed, the slider 60 moves without being inclined while being guided by the housing 30, so that the dome portion 53 of the cup rubber 50 pushes down the key top 40. It is elastically deformed uniformly in the circumferential direction by force. When the dome portion 53 is elastically deformed, the repulsive force acting on the key top 40 increases nonlinearly, and when the dome portion 53 is elastically buckled, the repulsive force rapidly decreases. In the present embodiment, the shape of the dome 53 and the length from the lower end of the spring 66 to the contact 21 at the initial position are set so that the dome 53 is elastically buckled and deformed when the contact is on. Thereby, regardless of the operation position of the key top 40, it is possible to obtain good operability with a click feeling when the contact is on. Since the base portion 31 of the housing 30 has a stepped shape and the upper portion is downsized, the dome portion 53 can be prevented from interfering with the housing 30 when the dome portion 53 is elastically deformed.

According to 1st Embodiment, there can exist the following effects.
(1) A cup rubber 50 is interposed between the membrane switch 20 on the printed wiring board 10 and the key top 40, and the contact 21 of the membrane switch 20 is surrounded inside the dome portion 53 of the cup rubber 50. The housing 30 is erected and fixed to the printed wiring board 10, and the slider 60 is provided integrally with the key top 40 and movable along the housing 30. Thereby, the moving direction of the key top 40 at the time of the pressing operation of the key top 40 is restricted, and the cup rubber 50 can be elastically deformed uniformly in the circumferential direction regardless of the operation part of the key top 40. For this reason, a constant click feeling can be always obtained during the pressing operation, and the operability is improved.

  On the other hand, unlike the present embodiment, when the cup rubber 50 is elastically deformed obliquely when the end portion (for example, the left end portion) of the key top 40 is pressed, the dome portion 53 of the cup rubber is First, the left side is deformed, and then the right side is deformed. For this reason, a click feeling twice occurs, and the operability is poor.

(2) Since the membrane switch 20 is used as the switch member, a stable on / off operation of the switch can be obtained without exposing the contact 21. Compared with the case of using a switch having a leaf spring such as a tact switch, the durability of the switch is also improved.
(3) Since the coil spring 66 is attached to the lower end of the slider 60 so that the coil spring 66 abuts on the membrane switch 20, it is possible to prevent an excessive load from acting on the contact 21 during the pressing operation, and damage the contact 21. Can be prevented.
(4) Since the leg 34 of the housing 30 is penetrated through the printed wiring board 10 and the tip end portion thereof is thermally crimped, the housing 30 can be fixed to the printed wiring board 10 without rattling.
(5) Since the peripheral wall portion 72 of the upper cover 70 is fitted to the peripheral wall portion 52 of the cup rubber 50 without a gap, it is possible to prevent water droplets from entering the back side of the cup rubber 50.

  A light emitting member such as an LED can be attached to the printed wiring board 10. FIG. 5 is a cross-sectional view of the switch device 100 showing an example thereof. In FIG. 5, a through-hole 25 is formed in the sheet substrate 22, a pair of LEDs 15 are attached to the upper surface of the printed wiring board 10 through the through-hole 25, and a convex portion 56 is formed on the cup rubber 50 so as to cover the upper side of the LED 15. Forming. In this case, for example, the cup rubber 50 and the key top 15 are configured by a well-known translucent member. Thereby, the surface of the key top 40 can be illuminated by the light emission of the LED 15. The LED 15 may be turned on / off in conjunction with the operation of the switch device 100.

  The mounting position and number of the LEDs 15 are not limited to those described above. For example, the LED 15 may be attached to the back surface of the printed wiring board 10, and an opening for guiding light from the LED 15 to the key top 40 side may be provided in the attachment portion of the printed wiring board 10. Depending on the mounting position of the LED 15, only the key top 40 may be formed of a translucent member. You may comprise the cup rubber 50, the keytop 40, and the housing 30 with a translucent member. The translucent member may be either transparent or non-transparent. The light emitting member may be other than the LED 15.

-Second Embodiment-
A pushbutton switch device according to a second embodiment of the present invention will be described with reference to FIGS. In the second embodiment, a pair of link members are used instead of the slider 60. FIG. 6 is an exploded perspective view showing the entire configuration of the pushbutton switch device 200 according to the second embodiment of the present invention, and FIG. 7 is a longitudinal sectional view of the pushbutton switch device 200. 1 and 2 are denoted by the same reference numerals, and differences from the first embodiment will be mainly described below.

  The switch device 200 according to the second embodiment includes a printed wiring board 10, a membrane switch 20 mounted on the surface of the printed wiring board 10, a housing 30 erected above the printed wiring board 10, and a press The key top 40 to be operated, a cup rubber 50 disposed between the printed wiring board 10 and the key top 40, and a pair of link members 80 that are rotatably supported by the housing 30.

  A pair of substantially rectangular through holes 24 corresponding to the mounting position of the housing 30 is opened in the sheet substrate 22 of the membrane switch 20, and a cup rubber 50 is provided at the center of the sheet substrate 22 between the through holes 24. Is installed. The cup rubber 50 has a substantially ring-shaped bottom portion 57 fixed to the upper surface of the sheet substrate 22, a dome portion 58 rising from the bottom portion 58, and a substantially ring-shaped top portion 59 formed at the upper end portion of the dome portion 58. The contact 21 of the membrane switch 20 is disposed inside the cup rubber 50. Although not shown in the drawings, a projection is projected downward from the center of the top 59, and the tip of the projection can press the contact 21 by deformation of the dome 58.

  The housing 30 includes a frame body 35 in which an opening 35 a that fits to the outer peripheral surface of the bottom portion 57 of the cup rubber 50 is formed, and legs 36 that project downward from the frame body 35. Each leg 36 passes through the through hole 24 of the sheet substrate 22 and the through hole 11 of the printed wiring board 10 and is fixed to the printed wiring board 10 by, for example, thermal caulking (FIG. 4). The pair of frame portions 35b facing the front and rear direction of the frame body 35 are provided with a pair of substantially arc-shaped cutout portions 35c from the bottom to the top.

  Each link member 80 has the same shape as each other, and includes a pair of arm portions 81 that are separated in the front-rear direction and extend substantially in parallel, and a connecting portion 82 that connects one end portions (upper end portions) of the arm portions 81 to each other. Have each. A tooth portion 83 is formed at the other end portion (lower end portion) of the arm portion 82, and the tooth portions 83 are engaged with each other to form a V-shaped gear link that has a V-shape when viewed from the side. On the inner surface on the other end side of each arm portion 81, a substantially cylindrical projection 84 is projected in the front-rear direction. At both ends of each connecting portion 82, a substantially cylindrical projection 85 is provided so as to project in the front-rear direction. The link member 80 described above is formed by integral molding using resin as a constituent material.

  The rib 43 (FIG. 3) is not provided on the bottom surface of the key top 40, and instead, an engagement groove 45 that engages with the protrusion 85 of the link member 80 is formed on the outer side in the left-right direction. In addition, you may make it attach light emitting members, such as LED, to the surface of the printed wiring board 10 similarly to having shown in FIG. An upper cover 70 (FIG. 1) may be provided around the key top 40.

  When the switch device 200 is assembled, the notches 35c of the frame portion 35b of the housing 30 are fitted into the protrusions 84 of the link member 80 from above with the teeth 83 of the link members 80 engaged with each other. Then, the frame part 35 b is fitted into the through hole 24 of the sheet substrate 22, and the housing 30 is fixed to the printed wiring board 10. As a result, the link member 80 is rotatably supported by the housing 30 with the protruding portion 84 as a fulcrum. Further, the protrusions 85 at both ends of the connecting portion of the link member 80 are engaged with the engaging grooves 45 on the bottom surface of the key top, and the link member 80 is connected to the key top 40.

  The main operation of the switch device 200 according to the second embodiment will be described. As shown in FIG. 7, when the key top 40 is not operated, the key top 40 is pushed up by the elastic force of the cup rubber 50, and the link member 80 stands up in a V shape. At this time, the protrusion inside the top portion 59 of the cup rubber 50 is located above the contact 21 of the membrane switch 20, and the contact 21 is turned off.

  When the key top 40 is pressed from this state, the top portion 59 of the cup rubber 50 is pushed against the bottom surface of the key top 40, the dome portion 58 of the cup rubber 50 is elastically deformed, and the protrusion inside the top portion 59 becomes the contact 21. approach. When the amount of pressing operation exceeds a predetermined amount, the dome portion 58 is elastically buckled and the protrusion inside the top portion 59 presses the contact 21 to turn on the contact 21.

  At this time, since the pair of link members 80 are connected to each other via the teeth 83, even if the end of the key top 40 is pressed, each link member 80 uses the lower protrusion 84 as a fulcrum. The protrusions 85 slide in the left-right horizontal direction along the engaging portion 45. For this reason, the key top 40 moves downward while maintaining the horizontal posture, and the dome portion 58 of the cup rubber 50 is elastically deformed uniformly in the circumferential direction. Thereby, regardless of the operation position of the key top 40, it is possible to obtain good operability with a click feeling when the contact is on.

  As described above, in the second embodiment, one end portion is slidably supported along the bottom surface of the key top 40, and the other end portion is rotatably supported by the notch portion 35c of the housing 30. A link member 80 is provided, and the link members 80 are connected to each other via a tooth portion 83. As in the first embodiment, the movement direction of the key top 40 during the pressing operation of the key top 40 is thereby restricted, and the cup rubber 50 is elastically deformed uniformly in the circumferential direction regardless of the operation part of the key top 40. It is possible to obtain a constant click feeling at the time of pressing operation. By using the link member 80, the height of the entire switch device can be suppressed, which is suitable for use in a low-profile switch device.

  The above switch devices 100 and 200 can be used alone, but a plurality of switch devices can be arranged on the operation panel. FIG. 8 is a plan view showing an example thereof. A plurality of switch devices 100 or 200 are arranged on the operation panel 300. In this case, the printed wiring board 10 extends over the entire operation panel 300, and the printed wiring board 10 is shared by the switch devices 100. Similarly, the sheet substrate 22 of the membrane switch 20 can be extended over the entire operation panel 300.

  The operation panel 300 can be arranged not only in the horizontal direction, but also in the vertical direction, and can be arranged obliquely. Accordingly, if the key top 40 moves in the vertical direction with respect to the printed wiring board 10, the movement direction of the key top 40 is not limited to that described above, and the key top 40 may be movable in a horizontal direction or an oblique direction. The key top 40 as the operation member has an oval shape, but may have another shape. If it is interposed between the printed wiring board 10 and the key top 40 and is elastically deformed by the pressing operation of the key top 40 and a non-linear repulsive force corresponding to the elastic deformation is applied to the key top 40, an elastic member is used. The configuration of the cup rubber 50 is not limited to that described above.

  The housing 30 may have any configuration as long as it is erected and fixed to the printed wiring board 10 so as to surround the contact 21 of the membrane switch 20. The slide hole 33 provided in the guide 32 (cylinder part) may not be rectangular. The configuration of the upper cover 70 as the cover member is not limited to that described above. The lower end surface of the peripheral wall portion 72 (peripheral wall) of the upper cover 70 is brought into contact with the upper surface of the dish portion 51 inside the peripheral wall portion 52 (peripheral wall) of the cup rubber 50 so that the peripheral wall portions 52 and 72 are fitted to each other. Alternatively, the peripheral wall portion 52 of the cup rubber 50 may be brought into contact with the back surface of the upper plate portion 71 of the upper cover 70 so that the peripheral wall portions 52 and 72 are fitted to each other.

  In the embodiment (FIG. 4), the leg 34 of the housing 30 is caulked to fix the housing 30 to the printed wiring board 10, but the fixing method of the housing 30 is not limited to this. For example, as shown in FIG. 9A, a hook portion 34c is provided at the tip of the leg 34, the hook portion 34c is passed through the through hole 11, and the hook portion 34c is locked to the back surface of the printed wiring board 10, The housing 30 may be fixed. Instead of passing the legs 34 through the printed wiring board 10, for example, as shown in FIG. 9B, the screw member 39 is passed through the through hole 11 from the back side of the printed wiring board 10, and is inserted into the base 31 of the housing 30. The housing 30 may be fixed by screwing the screw member 39 into the provided screw hole 38.

  In the above embodiment, the slider 60 or the link member 80 is supported so as to be movable in the housing 30, and when the key top 40 is pressed, the slider 60 slides up and down together with the key top 40 or the link member 80 rotates in the left and right direction. The movement of the key top 40 is regulated so that the key top 40 moves in a direction perpendicular to the printed wiring board 10 supported by the housing 30 so as to be movable. As long as the direction is regulated, the movable member may have any configuration. That is, as long as the features and functions of the present invention can be realized, the present invention is not limited to the pushbutton switch device of the embodiment.

10 Printed wiring board 15 LED
20 Membrane Switch 21 Contact 30 Housing 32 Guide 34 Leg 39 Screw Member 40 Key Top 50 Cup Rubber 60 Slider 70 Upper Cover 52, 72 Peripheral Wall 80 Link Member 100, 200 Pushbutton Switch Device 300 Operation Panel

Claims (8)

A printed wiring board;
An operation member to be pressed;
A switch member that is mounted on the surface of the printed wiring board and is activated by a pressing operation of the operation member;
An elastic member interposed between the printed wiring board and the operation member, elastically deforming by a pressing operation of the operation member, and applying a non-linear repulsive force corresponding to the elastic deformation to the operation member; In the push button type key switch device,
The switch member is constituted by a membrane switch,
A housing fixed upright on the printed wiring board so as to surround the contact point of the membrane switch;
The housing is movably supported, and operates with the operation member when the operation member is pressed, and restricts the movement direction of the operation member so that the operation member moves in a direction perpendicular to the printed wiring board. A push button type switch device further comprising a movable member. In the pushbutton type switch device according to claim 1,
The housing has a cylindrical portion standing around the contact portion,
The push button type switch device, wherein the movable member is provided integrally with the operation member and is slidably supported in the cylindrical portion. In the pushbutton type switch device according to claim 1,
The movable member is a pair of link members having one end portion slidably supported by the operation member along the bottom surface of the operation member and the other end portion rotatably supported by the housing. Push button type switch device. In the pushbutton type switch device according to any one of claims 1 to 3,
An end portion of the housing penetrates the printed wiring board and is fixed to the printed wiring board. In the pushbutton type switch device according to any one of claims 1 to 3,
The push button type switch device, wherein the housing is fixed to the printed wiring board by a screw member penetrating the printed wiring board. In the pushbutton type switch device according to any one of claims 1 to 5,
A light emitting member mounted on the surface of the printed wiring board facing the operation member;
Of the operation member, the elastic member, and the movable member, at least the operation member is made of a light-transmitting material. In the pushbutton type switch device according to any one of claims 1 to 6,
A cover member formed with an opening into which the operation member is fitted;
The elastic member has a substantially dome shape surrounding the contact portion, and a peripheral edge portion of the bottom surface thereof is formed to have substantially the same shape as a peripheral edge portion of the operation member,
A push-button switch characterized in that a peripheral wall is formed at each of the opening of the cover member and the peripheral edge of the elastic member, and the cover member and the elastic member are fitted to each other through the peripheral wall apparatus.   An operation panel provided with a plurality of pushbutton switch devices according to claim 1.

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