JPH10125173A - Moving contact body for panel switch and panel switch using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of part items and improve the assembling workability by holding the whole dome-like moving contact point made of an elastic metal thin sheet in a storage hole on the lower face of the operation section of a push button made of an elastic body and provided with an operation section on the upper face. SOLUTION: A projection 12A is provided at the center vertex section of a dome-like moving contact point 12 made of an elastic metal thin sheet. An operation section 13A is provided on a push button 13 made of elastic rubber of a resin, and the projection 12A is pressed and held in a recess 13C at the top face center of a storage hole 13B provided on the lower face to form this moving contact point body 20. The contact point body 20 is constituted of the contact point 12 and the push button 13 only, and a protective sheet 14 coated with an adhesive 14A on the upper face is stuck to the lower end face of the push button 13 at the time of storage or transportation. The outer periphery lower section and center vertex section of the contact point 12 are faced to the outside of a wiring board and a fixed contact point at the center respectively, and they are fixed to form a panel switch when the protective sheet 14 is peeled off. An arm section on the outer periphery of the contact point 12 is preferably pressed into the side wall groove of the storage hole 13B.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a movable contact for a panel switch used for an operation panel of various electronic devices and a panel switch using the same.

[0002]

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

FIG. 7 (a) is an exploded perspective view of a conventional movable contact body for a panel switch, and FIG. 7 (b) is a sectional view thereof. In the figure, reference numeral 1 denotes a dome-shaped movable contact made of an elastic metal thin plate;
Numeral 2 denotes a spacer made of an insulating film having a plurality of holes 2B provided by attaching a separator 3 to an adhesive 2A applied to the lower surface. The movable contact 1 inserted into the holes 2B of the spacer 2
However, the upper surface convex portion is covered with an insulating film sheet 4 coated with an adhesive 4A on the lower surface, and is fixed to the upper surface of the spacer 2.

[0005] Reference numeral 5 denotes a protective sheet made of an insulating film for preventing corrosion of the movable contact 1 due to gas in the air at the time of storing and transporting the movable contact 1 and adhesion of foreign matters.
A is attached to the lower surface of the spacer 2 via the separator 3 by A, and covers the lower surface of the hole 2B into which the movable contact 1 is inserted.
A panel switch movable contact body 10 is configured.

FIG. 8 (a) is an exploded perspective view of a panel switch using a conventional panel switch movable contact body 10, and FIG.
(B) is a sectional view of the same, in which 6 is a wiring board provided with a central fixed contact 6A and an outer fixed contact 6B on the upper surface, and a panel switch movable contact body 10A from which a protective sheet 5 and a separator 3 are removed. However, the lower end of the outer periphery of the movable contact 1 is placed on the outer fixed contact 6B, and the central vertex is the center fixed contact 6A.
Is adhered to the wiring board 6 by the adhesive 2A on the lower surface of the spacer 2 so as to face.

Reference numeral 7 denotes a movable contact body 1 for a panel switch.
0A, which is an elastic rubber or resin push button provided with an operation portion 7A on the upper surface, and a pressing portion 7B provided on the lower surface of the operation portion 7A has a movable contact 1
, And a panel switch 11 is formed.

In the above configuration, when the operating portion 7A on the upper surface of the push button 7 is pressed, the pressing portion 7B on the lower surface of the operating portion 7A presses the movable contact 1 via the sheet 4, and the movable contact 1 performs a reversing operation and the inner surface is rotated. When the central portion contacts the central fixed contact 6A, the central fixed contact 6A and the outer fixed contact 6B of the wiring board 6 are electrically connected, and when the pressing force to the push button 7 is removed, the movable contact 1 is elastically restored. The central portion of the inner surface of the movable contact 1 is separated from the central fixed contact 6A by the force, as shown in FIG.
It is configured to return to the OFF state of (b).

[0008]

However, in the above-mentioned conventional movable contact body for a panel switch and the panel switch using the same, in addition to the movable contact 1 and the push button 7, the spacer 2, the sheet 4, and the protective sheet 5 are constituted. Since the number of parts is large and the work of attaching each part is large, the switch assembling process is complicated and the cost is high.

The present invention solves such a conventional problem, and provides an inexpensive movable switch body for a panel switch which has a small number of components and is excellent in switch assembly workability, and a panel switch using the same. The purpose is to do so.

[0010]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a movable contact body for a panel switch and a panel switch using the same according to the present invention are provided with an elastic rubber or resin pusher provided with an operation portion on the upper surface. A storage hole is provided on the lower surface of the operation portion of the button, and the entire dome-shaped movable contact made of an elastic metal thin plate is stored and held in the storage hole.

According to the present invention, it is possible to obtain an inexpensive movable switch body for a panel switch and a panel switch using the same, which have a small number of components and are excellent in switch assembly workability.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is directed to an elastic rubber or resin push button provided with an operation section on the upper surface, and a storage hole provided on the lower face of the operation section of the push button. It is a movable contact body for panel switch consisting of a dome-shaped movable contact made of an elastic metal sheet that is entirely housed and held inside. It has a small number of components and is excellent in inexpensive panel switch operation with excellent switch assembly workability. It has an effect that a contact body can be obtained.

According to a second aspect of the present invention, in the first aspect of the present invention, a depression is provided at the center of the top surface of the push button storage hole, and the projection provided at the central vertex of the movable contact is held in the depression. With the configuration, when assembling the push button and the movable contact, a special assembling tool is not required, and the assembling can be easily performed with one touch, so that the assembling operation time can be shortened.

According to a third aspect of the present invention, in the first aspect of the present invention, an arm is provided on the outer periphery of the movable contact, and the arm is held in the lower end recess of the push button or the side wall groove of the storage hole. Since the movable contact is held on the push button by the arm portion, the movable contact can be reliably held and positioned in the push button storage hole.

According to a fourth aspect of the present invention, in the first aspect of the present invention, a movable contact pressing portion made of a hard material is provided at the center of the top surface of the storage hole of the push button. Since the inversion operation of the movable contact is performed by the hard pressing portion, there is an effect that a reliable inversion operation of the movable contact and a good operation feeling can be obtained.

According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, an adhesive portion is formed on a lower end surface of the push button. When the is fixed to the wiring board, the movable contact body is attached to the wiring board by the adhesive portion on the lower end surface of the push button,
This has the effect of ensuring that the movable contact body and the wiring board are securely fixed.

According to a sixth aspect of the present invention, in the invention of any one of the first to fifth aspects, a protective sheet coated with an adhesive on one surface is attached to the lower end surface of the push button to close the storage hole. The movable contact is corroded by gas in the air when storing or transporting the movable contact body for panel switches by closing the storage hole of the push button that accommodates and holds the movable contact with a protective sheet. Has the effect of preventing adhesion of

According to a seventh aspect of the present invention, there is provided a panel switch movable contact body according to any one of the first to fifth aspects,
A panel switch having a configuration in which the lower end of the outer periphery of the movable contact or the lower surface of the arm portion is placed on the outer fixed contact and the center apex is fixed to the center fixed contact on the wiring board provided with the center fixed contact and the outer fixed contact; Since the panel switch is configured using the panel switch movable contact body having a small number of component parts, an inexpensive panel switch can be obtained, and the work of attaching the panel switch movable contact body to the wiring board can also be performed. It has the effect that it can be easily performed.

Hereinafter, an embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIG. The same components as those described in the section of the related art are denoted by the same reference numerals, and detailed description thereof will be omitted.

(Embodiment 1) FIG. 1A is an exploded perspective view of a movable contact body for a panel switch according to a first embodiment of the present invention, and FIG. 1B is a sectional view of the same. In the figure, reference numeral 12 denotes a dome-shaped movable contact made of an elastic metal thin plate provided with a projection 12A at a central apex, and reference numeral 13 denotes an elastic rubber or resin having an operation portion 13A on an upper surface and a storage hole 13B on a lower surface of the operation portion 13A. The movable contact 12 is provided in the storage hole 13B of the push button 13 in the storage hole 13B.
13C is provided at the center of the top surface of the
A is press-fitted, stored and held, and the panel switch movable contact body 20 is configured.

Reference numeral 14 denotes a protective sheet having an adhesive 14A applied to its upper surface. The movable contact 12 is corroded by gas in the air or adheres to foreign matters when the movable contact body 20 for a panel switch is stored or transported. In order to prevent the above problem, an adhesive 14A is attached to the lower end surface of the push button 13 to close the storage hole 13B that stores and holds the movable contact 12.

FIG. 2A is an exploded perspective view of a panel switch using the panel switch movable contact body 20 according to the embodiment, and FIG. 2B is a sectional view of the same.
Reference numeral 6 denotes a wiring board provided with a central fixed contact 6A and an outer fixed contact 6B on the upper surface, and a movable contact body 20 for a panel switch from which a protective sheet 14 is removed is mounted on the outer fixed contact 6B such that the lower end of the outer periphery of the movable contact 12 is placed on the outer fixed contact 6B. The panel switch 21 is configured by being fixed to the wiring board 6 such that the apex thereof faces the central fixed contact 6A.

In the above configuration, when the operating portion 13A of the push button 13 is pressed, the movable contact 12 whose central apex is pressed at the center of the top surface of the storage hole 13B performs an inverting operation, and the inner central portion is the central fixed contact 6A. , The central fixed contact 6A and the outer fixed contact 6B of the wiring board 6 are electrically connected, and when the pressing force to the push button 13 is removed,
The central portion of the inner surface of the movable contact 12 is separated from the central fixed contact 6A by the elastic return force of the movable contact 12, and is turned off in FIG.
Returning to the state is the same as in the prior art.

As described above, according to the present embodiment, the movable contact body 20 for the panel switch is composed of only two parts, the movable contact 12 and the push button 13, so that the number of components is small, and An inexpensive movable contact body 20 for a panel switch which is excellent in operability in assembling a switch with a small number of parts attaching operation is obtained, and by using the movable contact body 20 for a panel switch to constitute a panel switch 21, an inexpensive panel switch is provided. The switch 21 is obtained, and the operation of fixing the panel switch movable contact body 20 to the wiring board 6 can be easily performed.

(Embodiment 2) FIG. 3 is an exploded perspective view of a panel switch movable contact body according to a second embodiment of the present invention, and FIG. 4 is a sectional view of a panel switch using the same movable contact body. In the figure, reference numeral 15 denotes a dome-shaped movable contact made of an elastic metal thin plate provided with arm portions 15A and 15B protruding left and right from the outer periphery. Reference numeral 16 denotes an operation portion 16A on an upper surface and a storage hole 16B on a lower surface of the operation portion 16A. The movable contact 15 is provided in a storage hole 16B of the push button 16 and the arms 15A, 15D are provided in grooves 16C, 16D provided on the left and right side walls of the storage hole 16B.
B is press-fitted, stored and held, and constitutes a panel switch movable contact body 20A.

The movable contact body 2 for a panel switch
0A, the arm 15 of the movable contact 15 is placed on the wiring board 6 on which the central fixed contact 6A and the outer fixed contact 6B are provided on the upper surface.
A panel switch 21A is formed by fixing the lower surfaces of A and 15B on the outer fixed contact 6B so that the central apex thereof faces the central fixed contact 6A, and when the operation unit 16A of the push button 16 is pressed in this configuration. The electrical connection between the central portion of the inner surface of the movable contact 15 and the central fixed contact 6A is performed by the reversing operation of the movable contact 15 pressed to the center of the top surface of the storage hole 16B. The same is true.

As described above, the movable contact 15 is
5A and 15B are inserted into grooves 16C and 16D in the side wall of the storage hole 16B.
Since the movable contact 15 is held by the push button 16 by press-fitting the movable contact 15, the positioning of the movable contact 15 to the push button 16 and the positioning of the movable contact 15 with the storage hole 16 </ b> B can be ensured.

A movable contact pressing portion 16E made of a hard material is provided at the center of the top surface of the housing hole 16B of the push button 16 which is in contact with the central apex of the movable contact 15; When the movable contact 15A is pressed, the movable contact 15 is pressed by the movable contact pressing portion 16E to perform a reversing operation. Therefore, the movable contact 15 is movable compared to the case where the movable contact 15 is pressed at the center of the top surface of the storage hole 16B of the soft push button 16. A reliable reversing operation of the contact 15 and a good operation feeling can be obtained.

(Embodiment 3) FIG. 5 is an exploded perspective view of a panel switch movable contact body according to a third embodiment of the present invention, and FIG. 6 is a sectional view of a panel switch using the same movable contact body. In the same figure, reference numeral 17 denotes bent portions 17C, 17B at the tips of arm portions 17A, 17B projecting left and right from the outer periphery.
D is a dome-shaped movable contact made of an elastic metal thin plate, and has an operation portion 18A on the upper surface and a storage hole 1 on the lower surface of the operation portion 18A.
8B is a push button made of rubber or resin having elasticity, and the bent portions 17C and 17D of the movable contact 17 are provided with recessed portions 18B provided on the left and right lower end surfaces of the housing hole 18B of the push button 18.
C, 18D, and the movable contact 17 is pushed into the push button 18.
The panel switch movable contact body 20B is housed and held in the housing hole 18B.

The movable contact body 2 for the panel switch
0B, the arm portion 17A of the movable contact 17 on the wiring board 6 provided with the central fixed contact 6A and the outer fixed contact 6B on the upper surface.
17B is fixed on the outer fixed contact 6B such that the lower surface thereof is placed on the outer fixed contact 6B and the center apex thereof is opposed to the center fixed contact 6A to constitute a panel switch 21B.
When the operation portion 18A is pressed, the movable contact 17 pressed to the center of the top surface of the storage hole 18B performs a reversing operation, so that the electrical connection between the central portion of the inner surface of the movable contact 17 and the center fixed contact 6A is not performed. This is the same as in the first embodiment.

As described above, the movable contact 17 is
The bent portions 17C and 17D at the tips of 7A and 17B are accommodated in the storage holes 18.
B. Since the movable contact 17 is held by the push button 18 by press-fitting into the concave portions 18C and 18D provided on the right and left lower end surfaces, the movable contact 17 is securely held on the push button 18 and positioned with respect to the storage hole 18B. be able to.

An adhesive portion 18E is formed on the lower end surface of the push button 18 excluding the storage hole 18B. When the panel switch movable contact member 20B is fixed to the wiring board 6, the adhesive portion 18E is used. The body 20B is the wiring board 6
The movable contact body 20B and the wiring board 6 can be more securely fixed.

[0033]

As described above, according to the present invention, it is possible to obtain an inexpensive movable switch body for a panel switch and a panel switch using the same, which have a small number of components and are excellent in operability of switch assembly. An advantageous effect is obtained.

[Brief description of the drawings]

FIG. 1A is an exploded perspective view of a movable contact body for a panel switch according to a first embodiment of the present invention; FIG.

FIG. 2 (a) is an exploded perspective view of a panel switch using the movable contact body, and FIG.

FIG. 3 is an exploded perspective view of a movable contact body for a panel switch according to a second embodiment of the present invention.

FIG. 4 is a sectional view of a panel switch using the movable contact body.

FIG. 5 is an exploded perspective view of a movable contact body for a panel switch according to a third embodiment of the present invention.

FIG. 6 is a sectional view of a panel switch using the movable contact body.

7A is an exploded perspective view of a conventional panel switch movable contact body. FIG.

FIG. 8A is an exploded perspective view of a conventional panel switch, and FIG.

[Explanation of symbols]

 Reference Signs List 6 Wiring board 6A Central fixed contact 6B External fixed contact 12, 15, 17 Movable contact 12A Projection 13, 16, 18 Push button 13A, 16A, 18A Operation unit 13B, 16B, 18B Storage hole 13C Depression 14 Protective sheet 14A Adhesive 15A, 15B, 17A, 17B Arm 16C, 16D Groove 16E Press 17C, 17D Bend 18C, 18D Concave 18E Adhesion 20, 20A, 20B Movable contact body for panel switch 21, 21A, 21B Panel switch

Claims (7)

[Claims] 1. A push button made of elastic rubber or resin having an operation portion provided on an upper surface thereof, and a dome made of an elastic metal thin plate entirely stored and held in a storage hole provided on a lower surface of the operation portion of the push button. A movable contact body for panel switches consisting of a movable contact in the shape of a circle. 2. The movable contact body for a panel switch according to claim 1, wherein a depression is provided in the center of the top surface of the push button storage hole, and the depression is provided with a projection provided at the central apex of the movable contact. 3. The movable contact body for a panel switch according to claim 1, wherein an arm portion protruding from an outer periphery of the movable contact is provided, and the arm portion is held in a concave portion on a lower end surface of the push button or a side wall groove of the storage hole. 4. The movable contact body for a panel switch according to claim 1, wherein a movable contact pressing portion made of a hard material is provided at the center of the top surface of the accommodation hole of the push button. 5. The movable contact body for a panel switch according to claim 1, wherein an adhesive portion is formed on a lower end surface of the push button. 6. The storage sheet according to claim 1, wherein a protective sheet having an adhesive applied to one side thereof is attached to a lower end surface of the push button to close the storage hole.
The movable contact body for a panel switch according to any one of the above. 7. The movable contact body for a panel switch according to any one of claims 1 to 5, wherein the lower end of the outer periphery of the movable contact or the lower surface of the arm portion is provided on a wiring board provided with a center fixed contact and an outer fixed contact. A panel switch mounted on the outer fixed contact and fixed so that the center apex faces the center fixed contact.