JP2000306452A - Manufacturing method of movable contact body, movable contact body manufactured by using same manufacturing method, and panel switch using same movable contact body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method capable of reducing maintenance such as wiping off an adhesive compound sticking on a metal pattern for cutting for forming the external shape of a product, in the case of a manufacturing method of a movable contact body for a panel switch used for an operation panel, etc., of various electronic apparatuses. SOLUTION: Relative to a flexible insulating sheet member 14 having an adhesive compound layer 11A, becoming adhesive when reacting to heat, formed in an inadhesive state on the whole surface of one side thereof, desired adhesive areas 12 are formed on the adhesive compound layer 11A by pressing a heated punch thereon in prescribed areas excluding positions where cutting is performed in a subsequent process and the vicinity thereof, dome-shaped movable contacts 1 are fastened to and held in the adhesive areas 12, and then cutting is performed in the cut positions of the insulating sheet member 14, or inadhesive areas 13 of the adhesive compound layer 11A, to form the external shape of a product. Therefore, the adhesive compound is less liable to stick in vain on cutting blades, etc., of a metallic mold for cutting, and the frequency of maintenance can be sharply reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a movable contact body used for an operation panel of various electronic devices, a movable contact body manufactured by using the manufacturing method, and a panel switch using the movable contact body. It is about.

[0002]

2. Description of the Related Art A conventional movable contact body for a panel switch is disclosed in Japanese Patent Application Laid-Open No. Hei 10-188728 proposed by the present applicant.
Japanese Unexamined Patent Publication (Kokai) No. H11-209686 is known, and its contents will be described below.

FIG. 7A is a sectional view of a conventional movable contact body for a panel switch, and FIG. 7B is an exploded perspective view. In FIG. 7, reference numeral 1 denotes a dome-shaped movable contact made of an elastic metal thin plate;
Reference numeral 2 denotes a flexible insulating sheet coated with an adhesive 2A having an adhesive force on the entire lower surface.
Is fixed to a predetermined position of the insulating sheet 2 by the adhesive 2A.
Is held.

A dust-proof separator 3 having an upper surface subjected to a peeling treatment is adhered below the dome-shaped movable contact 1 and the insulating sheet 2 around the dome-shaped movable contact 1 by an adhesive 2A so that the movable switch can be used for a panel switch. The contact body 4 is constituted.

The separator 3 is provided for the purpose of preventing corrosion of the dome-shaped movable contact 1 due to gas in the air and adhesion of foreign matter to the adhesive 2A of the insulating sheet 2 when the movable contact body 4 is stored and transported. It is something to stick.

Next, a brief description will be given of a method of manufacturing the movable contact body 4 having the above-mentioned structure with reference to FIG. 8. An insulating sheet member 5 of a predetermined size having an adhesive 2A applied on one entire surface thereof is provided.
Is conveyed with the adhesive 2A side facing upward, and the apex portion of the dome-shaped movable contact 1 is fixed to a predetermined position and arranged and held.

Subsequently, a separator member 6 of a predetermined size, which has been subjected to a peeling treatment, is attached to the lower surface from above the insulating sheet member 5 to which the dome-shaped movable contact 1 is fixed.
In a state where the insulating sheet member 5 and the separator member 6 are bonded to each other, the movable contact body 4 shown in FIG. 7 is obtained by cutting a predetermined product shape using a cutting die or the like, that is, a portion shown by a broken line in FIG. Was something.

[0008]

However, in the above-mentioned conventional manufacturing method, the adhesive 2A applied to the insulating sheet member 5 is always in an adhesive state, and the adhesive 2A is also cut at the same time to a predetermined pressure. In many cases, the pressure-sensitive adhesive 2A adheres to the cutting edge of the cutting die or the like, and in such a state, the cutting ability is reduced. There is a problem that frequent maintenance work of the cutting die such as wiping is required.

The present invention solves such a conventional problem, and a movable contact body which can reduce maintenance work such as wiping an adhesive adhered to a cutting die for processing into a predetermined product shape. It is an object of the present invention to provide a manufacturing method, a movable contact body manufactured by using the manufacturing method, and a panel switch using the movable contact body.

[0010]

In order to achieve the above-mentioned object, the present invention provides an adhesive layer which generates an adhesive force in response to energy, is provided on the entire surface of one side of the insulating base in a state where the adhesive force is not generated. With respect to the formed flexible insulating sheet member, energy is applied to a predetermined portion excluding a position where the cutting process is performed in a later step and the vicinity thereof, and an adhesive force is generated only in a region of the adhesive layer in this portion, After fixing and holding the dome-shaped movable contact in this area, the outer shape of the product is processed by cutting a cutting position where the adhesive layer of the insulating sheet member does not have an adhesive force.

As a result, since the pressure-sensitive adhesive layer at the cutting position of the insulating sheet member has no adhesive force, the pressure-sensitive adhesive does not easily adhere to the cutting blade or the like of the cutting die. The frequency of maintenance work such as wiping off the adhered adhesive can be greatly reduced.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention is characterized in that the pressure-sensitive adhesive layer which generates an adhesive force in response to energy comprises:
The mounting position of the movable contact and the fixed contact, which are the positions excluding the position where the cutting process is performed in the post-process and the vicinity thereof, on the flexible insulating sheet member formed on the entire surface of one side in a state where the adhesive force is not generated. A step of applying energy to a predetermined portion such as a position where the pressure-sensitive adhesive layer is adhered to the substrate to generate an adhesive force only in the area of the adhesive layer in this portion; Forming a dome-shaped movable contact made of an elastic metal sheet by fixing and holding a vertex of the dome-shaped movable contact; and forming a product outer shape by cutting a cutting position where the adhesive layer of the insulating sheet member does not have an adhesive force. And the manufacturing method of the movable contact body including the step, because the portion of the adhesive layer that does not cause the adhesive force of the insulating sheet member, so as to cut,
The adhesive can be made less likely to adhere to the cutting blades and the like of the cutting mold, and the frequency of maintenance work such as wiping the adhesive adhered to the mold can be significantly reduced. It has the effect that it can be produced.

According to a second aspect of the present invention, in the first aspect of the present invention, the pressure-sensitive adhesive layer of the insulating sheet member is responsive to heat, and the insulating sheet member is heated to a predetermined temperature. By pressing the punch, the adhesive layer of the insulating sheet member is made to have an adhesive force, in addition to the effect of the invention according to claim 1,
It is possible to generate adhesive force in a predetermined area of the pressure-sensitive adhesive layer by a simple operation of pressing a heated punch. Since it is possible to change the portion where the adhesive force is generated, there is an effect that it is possible to easily cope with small-quantity multi-product production.

According to a third aspect of the present invention, the surface of the adhesive layer formed by the method for manufacturing a movable contact body according to the first or second aspect and having an adhesive force is subjected to a release treatment. It is a movable contact body with a dustproof separator attached to it, and when the movable contact body is transported and stored,
This has the effect of easily preventing corrosion of the dome-shaped movable contact by gas in the air, attachment of foreign matter to the adhesive layer of the insulating sheet, and the like.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the region of the pressure-sensitive adhesive layer that has caused the adhesive force of the insulating sheet is formed so as to surround the periphery of each dome-shaped movable contact. When configuring a panel switch, the dome-shaped movable contact, which is a movable contact member that comes into contact with the fixed contact, can be reliably sealed in a sealed state between the insulating sheet and the separator. It has the effect that the property can be easily guaranteed.

According to a fifth aspect of the present invention, in the fourth aspect of the present invention, a predetermined number of dome-shaped movable portions are formed such that regions of the pressure-sensitive adhesive layer which have caused the adhesive force of the insulating sheet are formed independently. It is composed of an affixed portion at the apex of the contact and a peripheral portion of a predetermined size integrally provided so as to surround the entire dome-shaped movable contact, and the outer peripheral portion of the dome-shaped movable contact is insulated. Since it can be made not to be adhesively fixed to the sheet, there is an effect that the sense of moderation when pressing the dome-shaped movable contact can be made clear.

According to a sixth aspect of the present invention, the separator of the movable contact body according to any one of the third to fifth aspects is peeled off, and the fixed contact corresponding to the top portion and the outer peripheral lower end portion of the dome-shaped movable contact is provided. The fixed contact substrate provided with the movable contact body is a panel switch configured by sticking the movable contact body, this movable contact body, the adhesive force is generated only in a predetermined area of the adhesive layer Therefore, it is easy to handle, has the effect of reducing the number of manufacturing steps of the panel switch, and has the effect of realizing a high quality panel switch.

FIG. 1 shows an embodiment of the present invention.
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.

FIG. 1A is a sectional view of a movable contact body for a panel switch according to an embodiment of the present invention, and FIG. 1B is an exploded perspective view, as shown in FIG. The movable contact body 10 for a panel switch has a dome-shaped movable contact 1 made of an elastic metal sheet fixed and held at a predetermined position of an insulating sheet 11 having an adhesive layer 11A formed on the entire lower surface thereof. 11 is provided with a dustproof separator 3 attached below, as in the case of the prior art.
1A is different in that it is composed of a region having an adhesive force and a region having no adhesive force. Hereinafter, each portion will be described as an adhesive region 12 and a non-adhesive region 13.

Also, in the drawings other than the cross-sectional view, the area of the adhesive area 12 is indicated by oblique lines so that the adhesive area 12 can be easily understood, and in the exploded perspective view of FIG. The pressure-sensitive adhesive layer 11A formed in
The hatched area in the drawing is the adhesive area 12, and the other areas are the non-adhesive areas 13.

Further, as shown in FIG.
Reference numeral 2 denotes a fixed number of dome-shaped movable contacts 1 formed in an independent state, each of which is composed of an affixed portion 12A of a vertex 1A of the dome-shaped movable contact 1 and a peripheral portion 12B integrally provided so as to surround the dome-shaped movable contact 1. The separator 3 is attached using the peripheral portion 12B.

The movable contact body 10 according to the present invention also has a configuration in which the dome-shaped movable contact 1 is securely sealed between the insulating sheet 11 and the separator 3 in a sealed state. In addition to ensuring reliability, it is possible to easily prevent corrosion of the dome-shaped movable contact 1 due to gas in the air and adhesion of foreign matter to the adhesive region 12 of the adhesive layer 11A of the insulating sheet 11 during transportation and storage. Is the same as in the prior art.

Next, a method of manufacturing the movable contact body 10 having the above-described structure will be described with reference to FIGS. 2 to 4. First, as a first step, heat and the like are applied to the flexible insulating base portion 14A. A flexible insulating sheet member 14 having an adhesive layer 11A which generates adhesive force only in a portion to which predetermined energy is applied, and which is formed on one entire surface in a state where adhesive force is not generated.
As shown in the cross-sectional view of FIG. 2, the pressure-sensitive adhesive layer 11A is positioned and held between the upper die 16 and the lower die 17 of the heating apparatus 15 with the side of the adhesive layer 11A facing upward.

The upper die 16 and the lower die 17 of the heat processing apparatus 15 are combined by a column 18 without any lateral displacement, the upper die 16 is fixed at a predetermined position, and the lower die 17 is moved up and down. It is configured to be movable.

The pressure-sensitive adhesive layer 1 of the insulating sheet member 14
The lower surface side of the upper die 16 which is the contact surface with 1A is subjected to a peeling treatment such as a silicon treatment.

On the other hand, the lower die 17 of the heating apparatus 15 includes a stripper portion 19 having a through hole 19A of a predetermined shape, a punch 20 inserted through the through hole 19A from below, and a punch fixing base for fixing the punch 20. 21.

The support column 18 is provided in the stripper section 1.
9 and the punch fixing base 21, the two are accurately combined with each other, and a coil-shaped spring body 22 is disposed on the column 18 between them.

The shape of the tip of the punch 20 inserted into the through hole 19A of the stripper 19 is the shape of the desired adhesive area 12 (see FIG. 1) except for the position where the cutting process is performed in the subsequent step and its vicinity. The temperature of the distal end portion can be maintained at a predetermined temperature by operating the heating heater 23 that is formed and built in.

Then, as a second step, the lower die 17 is raised to move the insulating sheet member 14 to the upper die 1 with respect to the insulating sheet member 14 positioned in the heat processing apparatus 15 having the above-described configuration.
6 and the stripper portion 19 of the lower die 17 (see FIG. 3A). Then, the punch fixing base 21 is raised against the urging force of the spring body 22, and the punch maintained at a predetermined temperature. The tip of the insulating base member 20 of the insulating sheet member 14
A, the heat is applied to the insulating base portion 14A.
(See FIG. 3 (b)).

As described above, the pressure-sensitive adhesive layer 11A generates an adhesive force only in a portion to which a predetermined energy such as heat is applied.
The adhesive force is generated only in the area corresponding to the shape of the leading end of 0, so that the desired adhesive area 12 can be formed, and the other parts are maintained in the state of the non-adhesive area 13.

At this time, the contact surface of the upper die 16 of the heating device 15 which comes into contact with the adhesive region 12 is as follows:
The upper mold 1
Unnecessary pressure-sensitive adhesive of the pressure-sensitive adhesive layer 11A hardly adheres to 6.

Thereafter, the lower mold 17 is lowered to release the holding of the insulating sheet member 14, and the insulating sheet member 14 having the adhesive area 12 formed thereon is transported. As a third step, FIG.
And (b), the insulating sheet member 14
Then, the apex portion 1A of the dome-shaped movable contact 1 is fixed to the affixed portion 12A of the dome-shaped movable contact 1 in the adhesive area 12, whereby the dome-shaped movable contact 1 is arranged and held, and has a predetermined size. The separator member 6 is formed as a peripheral portion 12B surrounding the dome-shaped movable contact 1 in the adhesive region 12.
Paste using.

Finally, as a fourth step, the cutting position of the insulating sheet member 14 with the separator member 6, that is, the portion where the pressure-sensitive adhesive layer 11A indicated by the dotted line in FIG. The movable contact body 10 shown in FIG.

At the time of this cutting, the cutting blade of the cutting die can pass through the non-adhesive region 13, so that excess adhesive of the adhesive layer 11A adheres to the cutting blade of the cutting die. The frequency of maintenance work such as wiping can be greatly reduced, and the movable contact body 10 can be efficiently produced at low cost.

In the method of manufacturing the movable contact body 10 described above, since the adhesive region 12 of the adhesive layer 11A is formed by a simple operation of pressing the heated punch 20, the workability is excellent. At the same time, automation is easy, and the desired shape of the adhesive region 12 can be easily formed only by replacing the stripper portion 19 and the punch 20. Therefore, the present invention is suitable for small-quantity multi-product production.

Next, a panel switch using the movable contact body 10 will be described with reference to the sectional view of FIG. 5. As shown in FIG. Is peeled off and the adhesive area 12
Peripheral portion 12B surrounding the dome-shaped movable contact 1 of
The movable contact body 10 is configured to be attached to a wiring board 31 having fixed contacts 32A and 32B, which are fixed contact boards.

At this time, the top portion 1 of the dome-shaped movable contact 1
A is opposed to the fixed contact 32A of the wiring board 31, and the lower end 1B of the outer periphery of the dome-shaped movable contact 1 is placed on the fixed contact 32B and is always in contact with the fixed contact 32B.

In the panel switch 30 having the above structure, when a pressing force is applied to the dome-shaped movable contact 1 from above via the insulating sheet 11, the dome-shaped movable contact 1 is inverted with a predetermined pressing force, and the top portion thereof When the back surface of 1A contacts the fixed contact 32A, the fixed contacts 32A and 32B are electrically connected to each other. When the above pressing force is removed, the dome-shaped movable contact 1 is restored by the restoring force of the dome-shaped movable contact 1. The fixed contacts 32A and 32B are electrically separated from each other by being restored to the shape and the back surface of the vertex 1A being separated from the fixed contact 32A.

In this operation, only the apex 1A of the dome-shaped movable contact 1 is fixed and held on the insulating sheet 11, and the outer peripheral portion thereof is not fixed. It is possible to easily realize the panel switch 30 which is obtained and has an excellent operation feeling.

As shown in FIG. 6, the pressure-sensitive adhesive layer 11A
When the movable contact body 41 for the panel switch having the handle portion 40 formed by the non-adhesive region 13 is manufactured, the movable contact body 41 can be easily handled by the handle portion 40 when configuring the panel switch. Therefore, the number of manufacturing steps of the panel switch can be reduced, and a high quality switch can be easily realized.

Further, in the above-described method for manufacturing the movable contact body, the example in which the predetermined adhesive region 12 is formed by only one punch 20 has been described, but the desired adhesive region 12 is formed by using a plurality of punches. The shape of the adhesive region 12 may be appropriately set as needed, and the method of forming the adhesive region 12 may be the same as that of the punch 20.
It is needless to say that a laser beam or the like can be used in addition to the above.

Further, when the pressure-sensitive adhesive layer of the insulating sheet is to be made sticky by applying energy other than heat, for example, ultraviolet rays or the like, a method such as irradiation of ultraviolet rays may be used. Needless to say, a desired adhesive region may be formed by a method according to the characteristics of the adhesive layer.

[0044]

As described above, according to the present invention, an adhesive force is generated in a predetermined area of the pressure-sensitive adhesive layer of the insulating sheet, and a cutting position where the adhesive force is not generated is cut to form a product outer shape. Since it is formed, an unnecessary adhesive can be hardly adhered to the cutting mold, the maintenance work can be reduced, and the movable contact body can be efficiently and inexpensively produced. As a movable contact body manufactured by the manufacturing method and a panel switch configured using the movable contact body, a high-quality and inexpensive switch can be easily realized.

[Brief description of the drawings]

FIG. 1A is a cross-sectional view of a movable contact body for a panel switch according to an embodiment of the present invention. FIG.

FIG. 2 is a conceptual diagram illustrating a first step of a method for manufacturing the movable contact body.

FIGS. 3A and 3B are conceptual diagrams illustrating the second step.

FIGS. 4A and 4B are conceptual diagrams illustrating the third step.

FIG. 5 is a sectional view of a panel switch using the movable contact body.

FIG. 6 is an exploded perspective view of a movable contact body for another panel switch.

7A is a sectional view of a conventional movable contact body for a panel switch, and FIG. 7B is an exploded perspective view of the same.

FIG. 8 is a conceptual diagram illustrating a method for manufacturing the movable contact body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Dome-shaped movable contact 1A Apex part 1B Peripheral lower end part 3 Separator 6 Separator member 10, 41 Movable contact body 11 Insulating sheet 11A Adhesive layer 12 Adhesive area 12A Adhered part 12B Peripheral part 13 Non-adhesive area 14 Insulating sheet member 14A Insulation Base part 15 Heating device 16 Upper die 17 Lower die 18 Prop 19 Stripper 19A Through hole 20 Punch 21 Punch fixing base 22 Spring body 23 Heater 30 Panel switch 31 Wiring board 32A, 32B Fixed contact 40 Handle part

Claims (6)

[Claims] 1. A cutting process is performed in a subsequent step on a flexible insulating sheet member formed on an entire surface on one side in a state where an adhesive layer which generates an adhesive force in response to energy does not generate an adhesive force. A step of applying energy to a predetermined portion such as a position where the movable contact is attached and a position where the movable contact is attached to the fixed contact substrate, which is a portion excluding the position and the vicinity thereof, to generate an adhesive force only in the area of the adhesive layer in this portion And a step of adhering and holding a predetermined number of vertices of a dome-shaped movable contact made of an elastic metal sheet to the insulating sheet member by the adhesive layer having the adhesive force, and the adhesive force of the adhesive layer of the insulating sheet member. Forming a product outer shape by cutting at a cutting position in which no cutting occurs. 2. The pressure-sensitive adhesive layer of the insulating sheet member reacts with heat, and a punch heated to a predetermined temperature is pressed against the pressure-sensitive adhesive layer of the insulating sheet member. 2. The method for manufacturing a movable contact body according to claim 1, wherein an adhesive force is generated. 3. A dust-proof separator whose surface has been subjected to a peeling treatment using a region of the pressure-sensitive adhesive layer formed by the method for manufacturing a movable contact body according to claim 1 and having an adhesive force. A movable contact body on which is pasted. 4. The movable contact body according to claim 3, wherein a region of the pressure-sensitive adhesive layer that has caused the adhesive force of the insulating sheet surrounds each dome-shaped movable contact. 5. The pressure-sensitive adhesive layer region of the insulating sheet, which has caused the adhesive force, is formed of a predetermined number of dome-shaped movable contacts, each of which is formed in an independent state, and an entire dome-shaped movable contact. The movable contact body according to claim 4, wherein the movable contact body is constituted by a peripheral portion having a predetermined size and provided integrally so as to surround the movable contact body. 6. A fixed contact substrate provided with fixed contacts corresponding to the apex portion and the lower end portion of the outer periphery of the dome-shaped movable contact by peeling off the separator of the movable contact body according to any one of claims 3 to 5. A panel switch constituted by attaching the movable contact body to the panel switch.