JP2007109674A - Movable contact body for panel switch and panel switch using the same - Google Patents

Abstract

[PROBLEMS] To provide a movable contact body for a panel switch used for an operation panel or the like of various electronic devices and a panel switch using the same, with a small number of parts used and an excellent switch assembly workability. Objective.
An upper surface convex portion of a dome-shaped movable contact 1 made of an elastic metal plate is pasted on a sheet 12 made of an insulating film having an adhesive 12A applied on the lower surface, and movable by a separator 13 stuck on the adhesive surface of the sheet 12. By adopting a configuration in which the lower surface of the contact 1 is closed, an inexpensive panel switch movable contact body having a small number of parts used and excellent in switch assembly workability and a panel switch using the same can be obtained.
[Selection] Figure 1

Description

  The present invention relates to a movable contact body for a panel switch used for an operation panel of various electronic devices and a panel switch using the same.

  A conventional movable contact body for a panel switch and a panel switch using the same will be described with reference to FIGS.

  8A is an exploded perspective view of a conventional movable contact body for a panel switch, and FIG. 8B is a sectional view thereof. In FIG. 8, 1 is a dome-shaped movable contact made of a thin elastic metal plate, and 2 is a bottom surface. A spacer made of an insulating film in which a separator 3 is attached to the adhesive 2A applied to the substrate and a plurality of holes 2B are provided, and the movable contact 1 inserted into the hole 2B of the spacer 2 applies the adhesive 4A to the lower surface. The upper surface convex portion is covered with the sheet 4 made of an insulating film and fixed to the upper surface of the spacer 2.

  Reference numeral 5 denotes a protective sheet made of an insulating film for preventing corrosion and adhesion of foreign matter due to gas in the air during storage and transportation of the movable contact 1, and a spacer through the separator 3 by an adhesive 5A applied on the upper surface. The panel switch movable contact body 10 is configured by being affixed to the lower surface 2 and closing the lower surface of the movable contact 1.

  FIG. 9A is an exploded perspective view of a conventional panel switch using a movable contact body for a panel switch, and FIG. 9B is a sectional view of the panel switch. In FIG. A panel switch movable contact body 10A with the protective sheet 5 and the separator 3 peeled off on the wiring board provided with the fixed contact 6B, the lower end of the outer periphery of the movable contact 1 rests on the outer fixed contact 6B, and the central apex is the center fixed contact 6A. Is attached to the wiring board 6 with an adhesive 2A on the lower surface of the spacer 2 to constitute a panel switch 11.

  In the above configuration, when the operation portion 7A of the flexible rubber or resin push button 7 disposed above the panel switch 11 is pressed, the pressing portion 7B on the lower surface of the operation portion 7A is moved via the sheet 4 to the movable contact 1. , The movable contact 1 performs a reversing operation, and the central portion contacts the central fixed contact 6A, whereby the central fixed contact 6A and the outer fixed contact 6B of the wiring board 6 are electrically connected, and the push button 7 When the pressing force is removed, the central portion of the movable contact 1 is separated from the central fixed contact 6A by the elastic return force of the movable contact 1 and returns to the OFF state of FIG. 9B.

  However, in the above-described conventional movable contact body for panel switch and panel switch using the same, there are many components such as the movable contact 1 and the sheet 4 as well as the spacer 2 and the protective sheet 5, and the pasting work of each part is also difficult. Since there are many, the switch assembly man-hours become complicated, the cost is high, and there is a problem that countermeasures are required on the electronic device side against static electricity that enters various electronic devices through the panel switch.

  The present invention solves such a conventional problem, and has a low number of components, excellent switch assembly workability, and an inexpensive panel switch movable contact body with anti-static measures and panel switch using the same Is intended to provide.

  In order to achieve the above object, the present invention has the following configuration.

  The invention according to claim 1 of the present invention is a dome-like sheet made of an insulating metal sheet coated with an adhesive on the lower surface, and an elastic metal thin plate attached to the adhesive surface of the sheet so that the upper surface convex portion is covered. It is a movable contact body for a panel switch composed of a movable contact and a separator that is affixed to the adhesive surface of the sheet and closes the lower surface of the movable contact, and has a low number of components and is excellent in switch assembling workability. It has the effect | action that the movable contact body for panel switches is obtained.

  Invention of Claim 2 is a thing of the structure which formed the electroconductive film in the upper surface of the sheet | seat made from an insulating film in invention of Claim 1, and tries to enter in an electronic device through a panel switch from the exterior. Since the static electricity to be flowed to the ground through the conductive film, there is an effect that the countermeasure against static electricity on the electronic device side becomes unnecessary.

  The invention according to claim 3 is the structure according to claim 1 or 2, wherein the lower end of the outer periphery of the movable contact and the adhesive surface of the sheet are floated, and the movable contact is attached to the sheet. In addition to preventing the adhesive of the sheet from entering, it has an effect that a good operational feel of the movable contact can be obtained as compared with the case where the entire upper surface convex portion of the movable contact is attached to the sheet.

  According to a fourth aspect of the present invention, in the first or second aspect of the invention, the adhesive on the lower surface of the sheet is not applied to the periphery of the lower end of the outer periphery of the movable contact. It has the effect of preventing the adhesive of the sheet from entering the inner surface more reliably.

  According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, a small hole is provided at a central apex portion of the movable contact, and an adhesive is formed on a lower surface of the sheet around the small hole. When the panel switch movable contact body is affixed to the wiring board to form a panel switch, contact with the center fixed contact of the wiring board by the outer peripheral end face of the small hole of the movable contact Contact is ensured, and by providing an exposed portion of the sheet to which no adhesive is applied on the lower surface of the sheet around the small hole of the movable contact, the inner surface of the movable contact from the small hole is provided. The adhesive can be prevented from entering.

  A sixth aspect of the present invention is the invention according to any one of the first to fifth aspects, wherein a pressing protrusion is provided on the upper surface of the sheet at the central apex portion of the movable contact. Even when the movable contact and the push button are misaligned when assembling the push button, the pressing force is always applied to the center of the movable contact by the pressing projection, so that the movable contact is reliably reversed. It has the effect of being able to.

  According to a seventh aspect of the present invention, there is provided the movable contact body for a panel switch according to any one of the first to sixth aspects, wherein the separator is peeled off, on a wiring board provided with a central fixed contact and an outer fixed contact. A panel switch movable contact body with a small number of components, with the lower end of the outer periphery being placed on the outer fixed contact and the center apex being affixed with a sheet adhesive so as to face the center fixed contact. Since the panel switch is used, an inexpensive panel switch can be obtained, and the operation of attaching the movable contact body for the panel switch to the wiring board can be easily performed.

  As described above, according to the present invention, it is possible to obtain an inexpensive panel switch movable contact body having a small number of components, excellent switch assembly workability, and taking measures against static electricity, and a panel switch using the same. .

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

  In addition, the same number is attached | subjected to the part of the same structure as the structure demonstrated in the term of the prior art, and the detailed description is abbreviate | omitted.

(Embodiment 1)
FIG. 1A is an exploded perspective view of a movable contact body for a panel switch according to the first embodiment of the present invention, FIG. 1B is a cross-sectional view thereof, in which 1 is made of an elastic metal thin plate. A dome-shaped movable contact 12 is a sheet made of an insulating film having an adhesive 12A applied to the lower surface, and the movable contact 1 is fixed to the sheet 12 with the upper surface convex portion covered and fixed by the adhesive 12A. A separator made of paper or insulating film for preventing corrosion and adhesion of foreign matter due to gas in the air during storage and transportation of the movable contact 1, which is attached to the lower surface of the sheet 12 by an adhesive 12 </ b> A and is attached to the lower surface of the movable contact 1. The movable contact body 20 for panel switches is comprised.

  2A is an exploded perspective view of the panel switch using the panel switch movable contact body according to the present embodiment, FIG. 2B is a sectional view thereof, and in FIG. The movable contact body 20A for the panel switch from which the separator 13 is peeled off is a wiring board provided with 6A and the outer fixed contact 6B. The lower end of the outer periphery of the movable contact 1 is placed on the outer fixed contact 6B and the central apex is the central fixed contact 6A. A panel switch 21 is configured by being affixed to the wiring board 6 with an adhesive 12A on the lower surface of the sheet 12 so as to face each other.

  In the above configuration, when the operation portion 7A of the flexible rubber or resin push button 7 disposed above the panel switch is pressed, the pressing portion 7B on the lower surface of the operation portion 7A is pressed via the sheet 12. The contact 1 performs a reversing operation, and the center portion contacts the center fixed contact 6A, whereby the center fixed contact 6A and the outer fixed contact 6B of the wiring board 6 are electrically connected, and the pressing force to the push button 7 is reduced. When removed, the central portion of the movable contact 1 is separated from the central fixed contact 6A by the elastic return force of the movable contact 1 and is returned to the OFF state in FIG.

  As described above, according to the present embodiment, since the movable contact body for the panel switch is composed of only three parts, that is, the movable contact 1, the sheet 12, and the separator 13, the number of constituent parts is small. An inexpensive panel switch movable contact body excellent in switch assembly work with little sticking work is obtained, and an inexpensive panel switch is obtained by configuring the panel switch 21 using the panel switch movable contact body 20. In addition, the operation of attaching the panel switch movable contact body 20 to the wiring board 6 can be easily performed.

(Embodiment 2)
3A is a cross-sectional view of a movable contact body for a panel switch according to a second embodiment of the present invention, and FIG. 3B is a cross-sectional view of a panel switch using the movable contact body. The panel switch movable contact body 30 is formed by printing a conductive coating 31 on the upper surface of the sheet 12 of the panel switch movable contact body 20 of the first embodiment described above using a silver-based or carbon-based paste. It is what.

  A panel switch 32 (see a cross-sectional view of FIG. 3B) manufactured using the movable contact body 30 for a panel switch having the above-described configuration is a conductive film formed on the entire upper surface of the sheet 12 of the movable contact body 30. Since the static electricity generated when the operation portion 7A of the push button 7 is pressed via the button 31 can be completely discharged to the ground, the panel switch It is not necessary to take countermeasures against static electricity at the place where 32 is attached, and this eliminates the parts for static electricity countermeasures and the mounting space that have been required in the past, so it can be easily downsized and countermeasures against static electricity. The material cost and assembly man-hours, etc., can be greatly reduced, and the cost of the panel switch 32 with the conductive coating 31 is slightly increased. Flop content can be sufficiently absorbed, in which it becomes possible to inexpensively manufacture a small-sized electronic devices which has been subjected to completely static electricity measures and comprehensively to determine.

(Embodiment 3)
4A is a cross-sectional view of a movable contact body for a panel switch according to a third embodiment of the present invention, and FIG. 4B is a cross-sectional view of a panel switch using the movable contact body. The movable contact 1 having the upper surface convex portion covered with the sheet 12 is floated between the lower end of the outer periphery of the movable contact 1 and the adhesive 12A of the sheet 12, and a gap 14 is provided to attach the movable contact 1 to the sheet 12.

  In this way, by providing the gap 14 between the lower end of the outer periphery of the movable contact 1 and the adhesive surface of the sheet 12, the adhesive 12A of the sheet 12 enters the inner surface from the lower end of the outer periphery of the movable contact 1, While preventing contact with the fixed contact 6A and the outer fixed contact 6B, the sheet 12 inhibits the reversing operation of the movable contact 1 as compared with the case where the entire upper surface convex portion of the movable contact 1 is attached to the sheet 12. A good operational feeling can be obtained without any problems.

  5A is an exploded perspective view of the movable contact body for the panel switch, and a sectional view of the panel switch using the movable contact body of FIG. By providing the sheet exposed portion 12B to which the adhesive 12A is not applied around the portion, it is possible to more reliably prevent the adhesive 12A from entering the inner surface from the lower end of the outer periphery of the movable contact 1.

(Embodiment 4)
6A is a cross-sectional view of a movable contact body for a panel switch according to a fourth embodiment of the present invention, and FIG. 6B is a cross-sectional view of a panel switch using the movable contact body. A small hole 1A is provided at the central apex of the movable contact 1, and a sheet exposed portion 12C to which no adhesive 12A is applied is provided on the lower surface of the sheet 12 around the small hole 1A.

  In the above configuration, when the operating portion of a push button (not shown) disposed above the panel switch is pressed, the movable contact 1 pressed by the pressing portion on the lower surface of the operating portion via the sheet 12 performs a reverse operation, Although the central portion is in contact with the central fixed contact 6A as in the prior art, the contact with the central fixed contact 6A is performed by the outer peripheral end face of the small hole 1A at the central apex portion of the movable contact 1, so that the central fixed contact The contact with 6A becomes more reliable.

  Further, by providing a sheet exposed portion 12C to which the adhesive 12A is not applied on the lower surface of the sheet 12 around the small hole 1A of the movable contact 1, the adhesive 12A enters the inner surface of the movable contact 1 from the small hole 1A. Can be prevented.

(Embodiment 5)
FIG. 7A is a sectional view of a movable contact body for a panel switch according to a fifth embodiment of the present invention, and FIG. 7B is a sectional view of a panel switch using the movable contact body. A pressing projection 12D is provided on the upper surface of the sheet 12 at the central apex of the movable contact 1, and a pressing portion 7C having a wide pressing surface is provided on the lower surface of the push button 7.

  In the above configuration, when the operating portion 7A of the push button 7 disposed above the panel switch is pressed, the pressing portion 7C on the lower surface of the operating portion 7A presses the pressing projection 12D of the sheet 12, and the pressing projection 12D When the movable contact 1 is pressed, the movable contact 1 performs a reversal operation so that the central portion contacts the central fixed contact 6A, and the central fixed contact 6A and the outer fixed contact 6B are electrically connected.

  As described above, since the pressing portion 7C of the push button 7 is configured to press the movable contact 1 via the pressing protrusion 12D on the upper surface of the sheet 12, the push button 7 and the panel switch 21 are assembled. Even when a center shift occurs between the movable contact 1 and the pressing portion 7C, a pressing force always acts on the central portion of the movable contact 1 by the pressing projection 12D, so that the movable contact 1 can be reliably reversed. it can.

  According to the movable contact body for a panel switch and the panel switch using the same according to the present invention, it is possible to realize an inexpensive one having a small number of components, excellent switch assembly workability, and taking measures against static electricity. It has an advantageous effect and is useful when configuring the operation panel of various electronic devices.

(A) An exploded perspective view of a movable contact body for a panel switch according to the first embodiment of the present invention, (b) a sectional view of the same. (A) An exploded perspective view of a panel switch using the movable contact body, (b) a sectional view thereof. (A) A sectional view of a movable contact body for a panel switch according to a second embodiment of the present invention, (b) a sectional view of a panel switch using the movable contact body. (A) Cross-sectional view of a movable contact body for a panel switch according to a third embodiment of the present invention, (b) Cross-sectional view of a panel switch using the movable contact body. (A) An exploded perspective view of a movable contact body for a panel switch provided with a sheet exposed portion, (b) a sectional view of a panel switch using the movable contact body. (A) A sectional view of a movable contact body for a panel switch according to a fourth embodiment of the present invention, (b) a sectional view of a panel switch using the movable contact body. (A) A sectional view of a movable contact body for a panel switch according to a fifth embodiment of the present invention, (b) a sectional view of a panel switch using the movable contact body. (A) Exploded perspective view of conventional movable contact body for panel switch, (b) Cross section (A) An exploded perspective view of a conventional panel switch, (b) a sectional view thereof

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Movable contact 1A Small hole 6 Wiring board 6A Center fixed contact 6B Outer fixed contact 7 Push button 7A Operation part 7B, 7C Press part 12 Sheet 12A Adhesive 12B, 12C Sheet exposure part 12D Protrusion 13 Separator 14 Cavity 20, 30 Panel Movable contact body for switch 20A Movable contact body for panel switch with stripped separator 21, 32 Panel switch 31 Conductive coating

Claims (7)

A sheet made of an insulating film with an adhesive applied to the lower surface, a dome-shaped movable contact made of an elastic metal sheet with the upper surface convex portion covered and adhered to the adhesive surface of the sheet, and an adhesive surface of the sheet A movable contact body for a panel switch comprising a separator for closing the lower surface of the movable contact. The movable contact body for panel switches according to claim 1, wherein a conductive film is formed on the upper surface of the sheet made of an insulating film. The movable contact body for a panel switch according to claim 1 or 2, wherein the movable contact is attached to the sheet with the lower end of the outer periphery of the movable contact and the adhesive surface of the sheet floating. The movable contact body for a panel switch according to claim 1 or 2, wherein the adhesive on the lower surface of the sheet is not applied to the periphery of the lower end of the outer periphery of the movable contact. The movable for a panel switch according to any one of claims 1 to 4, wherein a small hole is provided at a central vertex of the movable contact, and an adhesive is not applied to a lower surface of a sheet around the small hole. Contact body. The movable contact body for panel switches as described in any one of Claims 1-5 which provided the protrusion for a press on the upper surface of the sheet | seat of the center vertex part of a movable contact. The movable contact body for a panel switch according to any one of claims 1 to 6, wherein the separator is peeled off, on the wiring board provided with the central fixed contact and the outer fixed contact, and the outer peripheral lower end of the movable contact on the outer fixed contact. Panel switch pasted with sheet adhesive so that the center vertex of the mounting is opposite the center fixed contact.

Images