JP3063437B2 - Push switch and method of manufacturing the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a push switch using a diaphragm which can be used in an operation switch section of a video / audio device or the like and which gives a sense of moderation during operation, and a method of manufacturing the same.

[0002]

2. Description of the Related Art A conventional contact structure of a push switch will be described with reference to FIGS. According to FIG.
1a and 11b are lower contacts wired on the lower insulating substrate 12. Numeral 14 denotes a diaphragm made of a thin metal plate having a spherical shape and elasticity connected to the lower contact 11b and fixed on the lower insulating substrate 12 by an insulating sheet 15 provided with a lower surface adhesive layer on the upper surface thereof. 16 is the diaphragm 14
The button is held by the case 17 above, and the button 16 and the case 17 form an operation unit.

Next, the operation of the above embodiment will be described. When the button 16 is pressed from above, the diaphragm 14 is deformed via the insulating sheet 15 and comes into contact with the diaphragm 14 and the lower contact 11a. The first contact 11a and the second contact 11b are made conductive.

[0004]

However, in the above-described structure, not only the metal diaphragm 14 is required, but also a metal diaphragm 14 is attached and formed with an insulating sheet 15 provided with a lower surface adhesive layer for fixing the diaphragm 14. Needed. Since this lower surface adhesive layer is required, a special automatic machine is required when mounting by an automatic machine, and the mounting speed cannot be increased, and there is a problem that handling requires care.

SUMMARY OF THE INVENTION The present invention has been made to solve the conventional problems, and has as its object to provide a panel switch which is inexpensive and easy to automate.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention supplies an elastic upper insulating sheet made of a polymer material having an upper contact and a diaphragm and a lower insulating substrate in the form of a tape or a sheet. Then, the tape-shaped upper insulating sheet and the lower insulating substrate are cut and made into a single unit, and the switch unit is mounted on a pattern provided on a wiring substrate and manufactured, or the switch unit is mounted on a carrier tape for automatic mounting. It is manufactured by a manufacturing method of inserting, supplying, and mounting on a pattern provided on a wiring board by an automatic mounting machine, and fixing and electrically connecting the switch unit on the pattern provided on the wiring board. .

[0007]

Therefore, according to the present invention, not only can the metal diaphragm be made unnecessary, but also the lower surface adhesive layer of the insulating sheet provided with the lower surface adhesive layer can be eliminated, and a push switch excellent in automatic mountability can be provided. Having.

Further, if the tape is supplied after being inserted into a carrier tape for automatic mounting, it can be mounted on a general automatic mounting machine.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

1 and 2 show the structure of the present invention, FIG. 1 is a detailed sectional view of the present invention, and FIG. 2 is a perspective view of the present invention.
In FIG. 1, reference numeral 2 denotes a lower insulating substrate on which contacts 1a and 1b are arranged, on which an upper contact 4 and a diaphragm 5a are disposed.
A switch unit 30 is formed by arranging and fixing an upper insulating sheet 5 made of a polymer material having elasticity so that the upper contact 4 and the contact 1b are in contact with each other.
The contact 1 is formed by the upper patterns 31a and 31b and the conductive material 36.
a and 1b are fixed. At this time, the upper insulating sheet 5
And the lower insulating substrate 2 are made of a thermoplastic material.
The upper insulating sheet 5 and the lower insulating substrate 2 can be melted and fixed by an ultrasonic wave in a portion without the above, but may be fixed by bonding or the like.

Next, the operation of the above embodiment will be described. When the button 6 guided by the case 7 is pressed from above, the diaphragm 5 integrated with the upper insulating sheet 5 is pressed.
a, the upper contact 4 contacts the contact 1a, and the upper contact 4
The first contact 1a and the second contact 1b are made conductive through the switch for switching. The contacts 1a and 1b of the lower insulating substrate 2 are arranged so as to be connected to the back surface of the lower insulating substrate 2, so that the switch unit 30 is disposed on the wiring substrate 31 and, at the same time, the conductive material 36 such as solder is used. Are electrically connected to the patterns 31a and 31b.

Next, a method of manufacturing the push switch of the above embodiment will be described with reference to FIGS.

FIG. 3 is a schematic view showing a method of manufacturing a push switch according to the present invention. FIG. 3 (a) shows a state in which a switch unit 30 supplied in a tape shape is sucked by a chuck 8 of an automatic mounting machine. FIG. 3B shows a state in which the switch unit 30 is cut into single pieces by the cutter 9.
(C) is the chuck 8 of the automatic mounting machine and the switch unit 3
0 shows a state in which the object is moved by sucking 0 and mounted on a pattern portion on the wiring board 31.

First, as shown in FIG. 3A, the switch unit 30 is sucked by the chuck 8 of the automatic mounting machine.
(B) As shown in FIG.
As shown in FIG. 3 (c), the switch unit 30 is sucked and moved by the chuck 8 of the automatic mounting machine, mounted at a position corresponding to the patterns 31a and 31b on the wiring board 31, and conductively fixed by soldering or the like. It is.

FIG. 4 is a schematic view showing another method of manufacturing the push switch according to the present invention. Reference numeral 41 denotes a carrier tape for automatic mounting, which includes an upper tape 41a and a lower convex tape 41.
b is bonded to form a space 11c by the convex molding portion, and the switch unit 30 divided into one for one key is inserted into this space 41c.

In this state, the upper tape 41a is peeled off from the lower convex forming tape 41b, and the switch unit 30 in the space 41c is sucked and moved by the chuck 8 of the automatic mounting machine to move to the patterns 31a and 31b on the wiring board 31. It is mounted at a corresponding position and is conductively fixed by soldering or the like.

FIGS. 5A to 5C are schematic diagrams showing another method of manufacturing the push switch of the present invention. As shown in FIG. 5A, the upper insulating sheet 5 and the lower insulating substrate 2 are formed in a sheet shape. 5 and after being integrally fixed as shown in FIG.
As shown in (c), the switch unit 30 is manufactured by being divided into single switch units 30.

[0018]

According to the present invention, as is apparent from the above description,
Not only can the metal diaphragm be unnecessary, but also the lower surface adhesive layer of the insulating sheet provided with the lower surface adhesive layer can be eliminated, and a simple and inexpensive push switch excellent in automatic mountability can be provided.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a contact structure which is a main part of an embodiment of a push switch according to the present invention.

FIG. 2 is a perspective view of the same.

FIGS. 3A to 3C are manufacturing process diagrams showing one embodiment of a method for manufacturing a push switch of the present invention.

FIG. 4 is a side sectional view showing another manufacturing method.

FIGS. 5A to 5C are process diagrams showing another manufacturing method;

FIG. 6 is a sectional view showing a contact structure of a conventional push switch.

FIG. 7 is an exploded perspective view of the same.

[Explanation of symbols]

 1a contact 1b contact 2 lower insulating substrate 4 upper contact 5 upper insulating sheet 5a diaphragm 30 switch unit 31 wiring board 31a pattern 31b pattern

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-2-126524 (JP, A) JP-A-4-315718 (JP, A) JP-A-4-28125 (JP, A) JP-A-63- 202810 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01H 13/52 H01H 11/00 H01H 13/70

Claims (5)

(57) [Claims] An upper insulating sheet made of a polymer material having at least an upper contact and a diaphragm and having elasticity, and a lower insulating substrate on which a pair of lower contacts are arranged, wherein the upper insulating sheet and the lower insulating substrate are fixed. One contact of the lower insulating substrate and the upper contact are connected in a state where the diaphragm is lightly pressed or not pressed, and the other contact is made by pressing strongly.
A switch unit comprising a switch formed by connecting a plurality of contacts and an upper contact, and a push switch in which the pair of lower contacts and a wiring pattern on a wiring board are conductively fixed. 2. An elastic insulating upper sheet made of a polymer material having at least an upper contact and a diaphragm disposed thereon and a lower insulating substrate having a lower contact disposed thereon, wherein the upper insulating sheet and the lower insulating substrate are other than the diaphragm. Is electrically connected at the
A push switch in which a lower contact and an upper contact are connected by pressing a diaphragm to form a switch. 3. The push switch according to claim 1, wherein one or both of the upper contact and the lower contact are divided into two or more. 4. An upper insulating sheet and a lower insulating substrate are supplied and fixed in a tape shape to form a tape-shaped switch unit.
4. The method for manufacturing a push switch according to claim 1, wherein the tape-shaped switch unit is cut into a single product and mounted on a pattern provided on a wiring board. 5. The method according to claim 1, wherein the upper insulating sheet having a plurality of diaphragms and the lower insulating substrate are integrated, and a switch unit that is divided and made into a single product is mounted on a pattern provided on the wiring substrate. A method for manufacturing a push switch according to claim 1, 2 or 3.