JPH10241488A - Switch structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a switch structure in which the positioning and the fixing of a board member and a fitting frame member can be facilitated as guiding holding a switching member and the fitting frame member when the board member and the fitting frame member are assembled. SOLUTION: A rubber spring 8 is inserted into the fitting hole 2 in the nearly center position of a fitting frame member 1 from a lower side, and the rubber spring 8 is grasped by rubber spring hold parts 3 protruding inside the fitting hole 2. Two key switch turn parts 5, 5 and two key switch fitting slide parts 6, 6 are formed on both end parts of one end edge and the other confronting edge of the fitting frame member 1, and four guide portions 7, 7, 7, 7 are formed on the top faces of the key switch fitting turn parts 5 and the key switch fitting slide parts 6. Two fitting protruding parts 4, 4 are formed on one side edge and the other confronting side edge of the bottom face of the fitting frame part 1, and respective fitting protruding parts 4, 4 is interposed into the respective fitting through holes 9, 9 of an MPC plate (metal base material printed circuit board) 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch structure formed by mutually assembling a board member having a switching member and a mounting frame member supporting a key switch, and more particularly, to assembling the board member and the mounting frame member. The present invention relates to a switch structure capable of easily positioning and fixing a substrate member and an attachment frame member while guiding and holding a switching member to the attachment frame member.

[0002]

2. Description of the Related Art As an example of a conventional key switch structure, a switching member which performs a switching operation in conjunction with a vertical movement of a key top and a guide supporting member which guides the key top in a vertical direction are assembled. 8-16
FIG. 5 shows a key switch structure described in Japanese Patent Publication No. 1966.
It will be described based on. FIG. 5 is an enlarged perspective view showing a part of a conventional key switch structure. As shown in FIG. 5, the base 100 of the key switch structure is used for a thin keyboard attached to a notebook personal computer, a notebook word processor or the like, and is integrally formed from a thin metal plate such as a steel plate or an aluminum plate. Base 100
Has a rectangular shape, and has bent portions 102 at its four side ends.
Are formed, and a portion surrounded by each bent portion 102 is a flat plate portion 103. In addition, each bending part 102
To prevent the base 100 from bending and deforming,
It is provided in order to give rigidity to.

[0003] On the flat plate portion 103, two first mounting pieces 104, 104 and two second mounting pieces 10 corresponding to each of a large number of key switches S provided on the keyboard.
5 and 105 are formed. Each first mounting piece 104
As shown in FIG. 5, an opening 10 formed in the flat plate portion 103 is formed.
6 is formed to protrude upward in an arc shape from one side edge (the rear side edge in FIG. 5), and each of the second mounting pieces 105 is similarly formed on a flat plate portion. The opening 107 is formed so as to protrude upward in a trapezoidal shape from opposing side edges (front and rear ends in FIG. 5). Each of these first
The mounting pieces 104 and the second mounting pieces 105 are arranged at four corners of a region where the key switch S is mounted, and a guide support member 111 of the key switch S is mounted as described later.

An insulating film is formed on the flat plate portion 103 to be insulated, and a predetermined circuit pattern (not shown) is formed on the insulating film via conductive ink. In such a circuit pattern, corresponding to each key switch S provided on the base 100, a substantially central position of an area surrounded by the first mounting pieces 104, 104 and the second mounting pieces 105, 105 Comb-shaped fixed contact pattern 1
08 is provided.

A portion of the circuit pattern other than the fixed contact pattern 108 is covered with an insulating resist layer to protect the circuit pattern. In addition, mounting holes 109 are formed at a plurality of positions in the base 100, and each mounting hole 109 is for mounting the base 100 in a keyboard via a screw or the like. Next, the configuration of the key switch S disposed on the base 100 configured as described above will be described.

In FIG. 5, a key switch S includes a key top 110, a guide support member 1 that supports the key top 110, and guides the key top 110 to move up and down.
11 and a rubber spring 112 as a switching member that is arranged on the fixed contact pattern 108 and supports the guide support member 111.

Here, the key top 110 is formed from a synthetic resin such as an ABS resin, and letters such as alphabets are formed on the upper surface thereof by printing or the like. From the back surface of the key top 110, two rotation locking members are provided corresponding to the first mounting pieces 104, 104 formed on the flat plate portion 103, and the second mounting pieces 105 are provided. , 105, two sliding locking members are provided. A locking groove is formed in each rotation locking member, and a locking shaft 117 </ b> C provided on one hinge member 117 (described later) constituting the guide support member 111 is rotatably engaged in each locking groove. Is stopped. Each sliding locking member is formed with an elongated sliding groove, and a locking pin 118C provided on the other hinge member 118 (described later) is slidably engaged with each sliding groove. Is stopped.

The guide support member 111 for supporting the key top 110 is constituted by pivotally supporting two hinge members 117 and 118 so as to be rotatable in an intersecting manner. One hinge member 117 is formed in a U-shape in plan view, and is configured by connecting a pair of plate-like bodies 117A at a connecting portion 117B. A locking shaft 117C is provided between one end of each plate-like body 117A in close proximity to the connecting portion 117B, and a locking pin 117D is provided at the other end of each plate-like body 117A. (Only the stop pin 117D is shown).

Here, the locking shaft 117C is a key top 1
10, each locking pin 117 </ b> D is slidably mounted in a mounting piece 105 formed on the flat plate portion 103 of the base 100. A shaft hole is formed in the center of each plate-shaped body 117A, and a rotation shaft of a hinge member 118 described later is pivotally supported in the shaft hole. Thereby, each hinge member 11
Numerals 7 and 118 are pivotally supported so as to be mutually rotatable while crossing each other.

The other hinge member 118 is formed in an H shape in plan view, and connects the pair of plate-like members 118A to the connecting portions 118B.
It is configured by connecting with. Each plate 118A
Is provided with a locking pin 118C at one end thereof, and a locking pin 118D is provided at the other end of each plate-like body 118A. Here, each locking pin 118C is a key top 1
10 is slidably locked in the sliding groove of each sliding locking member, and each locking pin 118D is
03 is rotatably mounted in the mounting piece 104 formed. A pivot is formed at the center of each plate 118A, and each pivot is pivotally supported by the shaft hole in each plate 117A of the hinge member 117, as described above.

The rubber spring 112 is formed in an inverted cup shape from silicon rubber or the like, and a movable electrode made of conductive rubber or the like is provided on an inner upper wall thereof. The rubber spring 112 is fixed on the flat plate portion 103 with an adhesive, and when the key switch S performs a switching operation, the pressing force exerted from the guide support member 111 based on the pressing of the key top 110 is equal to or more than a certain load. Suddenly buckles with a click feeling,
The movable electrode comes into contact with the fixed contact pattern 108.

In the key switch S configured as described above, when the key top 110 is pressed, the key top 1 is pressed.
The locking shaft 117C of the hinge member 117 is rotated in the locking groove of each rotation locking member as the 10 moves downward, and each locking pin 118C of the hinge member 118 is The member is slid horizontally in the sliding groove of the member. At the same time, each locking pin 117D of the hinge member 117 is slid horizontally in the mounting piece 105, and each locking pin 118D of the hinge member 118 is rotated in the mounting piece 104.

[0013] As a result, the shaft supporting portion for mutually supporting the hinge member 117 and the hinge member 118 moves downward and gradually depresses the rubber spring 112, and when the depressed amount exceeds a certain limit. The rubber spring 112 is buckled. Thereby, the rubber spring 1
The movable electrode in 12 short-circuits the fixed contact pattern 108, and a predetermined switching operation is performed.

When the key top 110 is released from being depressed, the pivot portions of the hinge members 117 and 118 are pushed upward by the elastic restoring force of the rubber spring 112. Accordingly, the locking shaft 117C, the locking pin 118C, and the locking pins 117D and 118D perform operations opposite to the above-described operations, and as a result, the key top 110 is returned to the original position. Things.

[0015]

However, in the above-mentioned conventional key switch structure, it is necessary to fix the rubber spring switch 112 on the flat plate portion 103 of the base 100 by adhesion. Positioning equipment and bonding jigs are required, and the conditions for curing the adhesive also need to be as high as 150 ° C. for 7 minutes, resulting in high initial equipment costs and increased manufacturing costs. is there.

Further, a first mounting piece 104 and a second mounting piece 1 which are holding portions for rotating and sliding the guide support member 111 are provided.
No. 05 says that precision press molding requires multiple precision press punching and bend forming, which requires burrs, processing management maintenance and die management maintenance by cutting powder, etc., and increases the manufacturing cost of press molding. There's a problem.

Further, since the base 100 is formed from a flat plate by forming the first mounting piece 104 and the second mounting piece 105 by precision press molding, a slit-shaped through groove or through hole is formed.
There is a problem that small dust, dust, and the like enter the lower part of the base 100.

Further, the locking pin 1 of the guide support member 111
The guide support member 111 is not connected to the first mounting piece 104 and the second mounting piece 105 because an invitation structure for facilitating the incorporation of 17D and 118D cannot be formed in the first mounting piece 104 and the second mounting piece 105.
There is a problem that it is difficult to assemble into the mounting piece 105.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems. When assembling a board member and a mounting frame member, the switching member is guided and held by the mounting frame member while the board member is mounted to the mounting frame member. An object of the present invention is to provide a switch structure capable of easily positioning and fixing a frame member.

[0020]

According to a first aspect of the present invention, there is provided a switch structure comprising: a thin plate; a predetermined circuit pattern printed on one surface of the thin plate via an insulating film; A fixed electrode formed in the pattern,
A mounting through hole formed at a position near the fixed electrode, a sheet-like member bonded to the other surface of the thin plate via an adhesive layer, and a switching member that performs a switching operation in cooperation with the fixed electrode. And a mounting frame member having a guide holding portion that guides and holds the switching member, wherein the mounting protrusion is inserted into the mounting through hole. When it is performed, it is fixed to the sheet-like member via the adhesive layer.

In the switch structure having such features, the switching member is held and fixed to the guide holding portion of the mounting frame member so as to face the fixed electrode, and the mounting projection of the mounting frame member has a thin plate. It is fitted and fixed in a mounting through hole formed near the upper fixed electrode. In addition, the mounting through hole is closed at the rear end surface of the thin plate by a sheet-like member adhered to the back surface of the thin plate. This makes it unnecessary to adhesively fix the switching member on the fixed electrode, and easily positions and adhesively fixes the substrate member and the mounting frame member by the mounting through hole formed near the fixed electrode. Becomes possible. Therefore, switching member positioning equipment and bonding jigs are not required, and an adhesive with easy bonding conditions can be employed, so that initial equipment costs can be reduced and manufacturing costs can be reduced. become. Further, the mounting through-hole can be closed by the mounting projection of the switch structure and the sheet-like member on the back side of the thin plate, and it is possible to prevent small dust and dust from entering the lower portion of the thin plate.

Further, the switch structure according to claim 2 is
2. The switch structure according to claim 1, wherein the thin plate is formed of a metal material, the sheet-like member is formed of an insulating sheet, and the mounting through hole is formed by punching from one surface of the thin plate. It is characterized by having.

In the switch structure having such features, the thin plate is made of a thin metal plate, so that the mounting through-hole can be formed in a simple shape by press molding, and the maintenance of the mold is facilitated. And the manufacturing cost of press forming can be greatly reduced. In addition, by bonding an insulating sheet to the back surface of the metal sheet, the metal sheet is insulated from the base surface, and it is possible to prevent small dust and dust from entering the lower part of the metal sheet through the mounting through hole. become.

Further, the switch structure according to claim 3 is:
3. The switch structure according to claim 1, wherein the key switch includes a key top, a pair of hinge members for supporting the key top, and a guide support member for vertically moving and guiding the key top. A key switch mounting portion formed on a frame member, to which the hinge member of the guide support member is detachably mounted, wherein each of the hinge members is mounted on the key switch mounting portion, and each of the hinges is pressed in accordance with the depression of the key top. The switching member is pressed down via a member.

In the switch structure having such features, the key switch mounting portions are formed at both ends of one end and the other end of the mounting frame member because the hinge member of the key switch rotates and slides. . This eliminates the need for precision press forming for performing multiple precision press punching and bending of thin metal sheets, greatly reducing the manufacturing cost of press forming, and facilitating mold maintenance and management. It is possible to further improve the production quality.

Further, the switch structure according to claim 4 is
4. The switch structure according to claim 3, wherein a guide portion for mounting the hinge member is formed on the key switch mounting portion.

[0027] In the switch structure having the above-described features, a guide portion which is an invitation structure for facilitating the incorporation of the hinge member into the key switch mounting portion is formed. This makes it possible to easily incorporate the hinge member, reduce the manufacturing cost, and improve the manufacturing quality.

Further, the switch structure according to claim 5 comprises:
5. The switch structure according to claim 1, wherein a plurality of the switching members are provided on the substrate member, and a plurality of the mounting frame members are integrally provided corresponding to each switching member. 6. It is characterized by the following.

In the switch structure having such a feature, a plurality of mounting frame members are integrated,
Holding multiple switching members in one mounting frame member,
The mounting projection of the mounting frame member is fitted and fixed in the mounting through hole of the substrate member. As a result, the number of parts can be significantly reduced, and the number of assembly steps can be significantly reduced.
It is possible to significantly reduce parts costs and manufacturing costs. Further, the number of mounting through-holes for positioning and bonding and fixing the mounting frame member can be reduced, so that the cost of the press die and the product quality can be improved.

Further, the switch structure according to claim 6 is the switch structure according to claim 1, wherein the thin plate is formed of resin and the sheet-like member is formed of a conductive sheet. And

In the switch structure having such features, the thin plate can be formed of a resin molded product, and punching by press molding or the like is eliminated, so that the manufacturing cost can be significantly reduced. In addition, by bonding a conductive sheet to the back of a thin resin plate,
The resin thin plate is electrically connected to the base surface, and it is possible to prevent small dust, dust, and the like from entering the lower portion of the resin thin plate through the mounting through hole.

[0032]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, first to third embodiments of a switch structure according to the present invention will be described with reference to FIGS. 1 and 2 show a first embodiment, and FIG. 3 shows a second embodiment. FIG. 4 shows a third embodiment. First, a switch structure according to a first embodiment will be described with reference to FIGS. FIG. 1 is a perspective view showing the assembly of the switch structure according to the first embodiment. FIG. 2 is a side sectional view including a mounting through hole when the switch structure according to the first embodiment is assembled.

The structure of the switch structure will be described with reference to FIG. 1. The mounting frame member 1 is formed of a synthetic resin such as an ABS resin or a polyacetal resin, and has a substantially square shape. A mounting hole 2 into which the rubber spring 8 is inserted from below is formed at a substantially central position thereof. One side edge of the mounting hole 2 and another side edge opposed thereto (front and rear side edges in FIG. 1).
A rubber spring holding portion 3 that protrudes inward from and holds the rubber spring 8 is formed. At both ends of one end edge (the front end edge in FIG. 1) of the mounting frame member 1, two key switch mounting rotating portions 5, 5 are formed so as to protrude upward in a substantially square shape, and the one end is formed. On the other end edge (the rear end edge in FIG. 1) facing the edge, two key switch mounting sliding portions 6 are formed so as to protrude upward in a substantially rectangular shape. On the upper surfaces of the rotating portion 5 and the key switch mounting sliding portion 6, four guide portions 7, 7, 7, 7, which are guiding structures for facilitating the incorporation of the locking pins 17D, 18D of the guide support member 13, are provided. It is formed toward the lower side. Further, a metal base printed circuit board (hereinafter referred to as MPC) is provided on one side edge of the lower surface of the mounting frame member 1 and the other side edge opposed thereto (the lower left and right side edges in FIG. 1).
A substantially rectangular shape formed by a press forming process formed on a non-circuit pattern portion near both sides (both sides of each fixed contact pattern in FIG. 1) of a fixed contact pattern (covered with a rubber spring 8) on a plate 10) Are formed in the mounting through-holes 9 of the mounting holes 4.

An insulating film is formed on the MPC board 10 to be insulated, and a predetermined circuit pattern (not shown) is formed on the insulating film via conductive ink. In this circuit pattern, a comb-shaped fixed contact pattern is provided at a portion facing the substantially center position of the mounting frame member 1 corresponding to each key switch 15 disposed on the mounting frame member 1. ing. Note that portions of the circuit pattern other than the fixed contact pattern are covered with an insulating resist layer to protect the circuit pattern. Further, FIG.
As shown in FIG.
An insulating sheet 11 molded from a synthetic resin such as a polyethylene terephthalate resin (hereinafter referred to as a PET resin) coated with the resin 2 is adhered. Therefore, the mounting frame member 1
By fitting the mounting projections 4 into the mounting through holes 9 of the MPC board 10, the mounting projections 4 are adhered and fixed by the adhesive 12 of the insulating sheet 11. In addition, FIG.
As shown in FIG.
A rotation groove 24 is formed by the upper surface and a sliding groove 25 is formed by the key switch mounting sliding portion 6 and the upper surface of the MPC plate 10.

Next, the configuration of the key switch 15 provided on the mounting frame member 1 configured as described above will be described. In FIG. 1, a key switch 15 supports a key top 14, a key top 14, and a key top 1.
A guide support member 13 that guides the 4 in the vertical direction, and
It is composed of a rubber spring 8 as a switching member arranged on the fixed contact pattern and supporting the guide support member 13.

The configuration of the key switch 15 will be described in detail with reference to FIG. Here, key top 14 is ABS
It is formed of a synthetic resin such as a resin, and letters such as alphabets are formed on the upper surface thereof by printing or the like.
As shown in FIG. 2, two rotation locking members 19 are provided from the back surface of the key top 14 in correspondence with the key switch mounting rotation parts 5 and 5 formed on the mounting frame member 1. And the respective key switch mounting sliding portions 6, 6
, Two sliding locking members 20 are provided. A locking groove 21 is formed in each rotation locking member 19, and a locking shaft 17 </ b> C provided on one hinge member 17 (described later) constituting the guide support member 13 rotates in each locking groove 21. Locked as possible. Further, each of the sliding locking members 20 is formed with an elongated sliding groove 22, and each of the sliding grooves 22 is provided with a locking pin 18 provided on the other hinge member 18 (described later).
C is slidably locked.

The guide support member 13 for supporting the key top 14 is constituted by rotatably supporting two hinge members 17, 18 so as to be rotatable in an intersecting manner. One hinge member 17 is formed in a U-shape in plan view,
It is constituted by connecting a pair of plate-like bodies 17A at a connecting portion 17B. Each of the plate-like members 17 close to the connecting portion 17B
A locking shaft 17C is provided between one end of A and a locking pin 17D (only one locking pin 17D is shown in FIGS. 1 and 2) at the other end of each plate 17A. Is provided.

Here, the locking shaft 17C is
Are locked in the locking grooves 21 of the respective rotation locking members, and each locking pin 17D is directed downward to the guiding portion 7 formed on the upper surface of the key switch mounting sliding portion 6 formed on the mounting frame member 1. It is pressed down and slides into the key switch mounting sliding portion 6,
It is slidably mounted in the key switch mounting sliding portion 6. A shaft hole is formed in the center of each plate-like body 17A, and a rotation shaft 18E of a hinge member 18, which will be described later, is supported by the shaft hole. Thus, the hinge members 17 and 18 are pivotally supported so as to be rotatable with each other while crossing each other.

The other hinge member 18 is formed in an H shape in plan view, and is configured by connecting a pair of plate-like members 18A at a connecting portion 18B. A locking pin 18C is provided at one end of each plate-like body 18A.
Is provided with a locking pin 18D at the other end. Here, each locking pin 18C is slidably locked in the sliding groove 22 of each sliding locking member 20 in the key top 14, and each locking pin 18D is formed in the mounting frame member 1. The key switch mounting / rotating portion 5 is pressed downward on the guide portion 7 formed on the upper surface, slides into the key switch mounting / rotating portion 5, and is rotatably mounted in the key switch mounting / rotating portion 5. In addition, a rotating shaft 18 is provided at the center of each plate 18A.
E is formed, and each of the rotation shafts 18E is formed with the shaft hole 17 in each plate-like body 17A of the hinge member 17 as described above.
It is supported by E.

The rubber spring 8 is formed in an inverted cup shape from silicon rubber or the like, and a movable electrode made of conductive rubber or the like is provided on the inner upper wall thereof. The rubber spring 8 is inserted into the mounting hole 2 of the mounting frame member 1 and is gripped by the rubber spring holding portion 3,
By attaching and fixing the mounting frame member 1 on the MPC board 10, the movable electrode is fixed so as to face the fixed contact pattern on the MPC board 10. And key switch 15
During the switching operation, when the pressing force applied from the guide support member 13 based on the pressing of the key top 14 becomes a load equal to or more than a predetermined value, the movable electrode is rapidly buckled with a click feeling, and the movable electrode is fixed. It comes into contact with the pattern.

The key switch 15 configured as described above
, When the keytop 14 is pressed, the keytop 1
The locking shaft 1 of the hinge member 17 is moved as the
7C is rotated in the locking groove 21 of each rotation locking member 19, and each locking pin 18C of the hinge member 18 slides horizontally in the sliding groove 22 of each sliding locking member 20. Is done.
At the same time, each locking pin 17D of the hinge member 17 is slid horizontally in the key switch mounting sliding portion 6, and each locking pin 18D of the hinge member 18 is moved in the key switch mounting rotating portion 5. Is turned.

As a result, the hinge member 17 and the hinge member 1
The shaft support 23 that supports the shaft 8 and the shaft 8 moves downward and gradually presses the rubber spring 8, and when the amount of pressing exceeds a certain limit, the rubber spring 8 is buckled. Thereby, the movable electrode in the rubber spring 8 short-circuits the fixed contact pattern, and a predetermined switching operation is performed.

When the depression of the key top 14 is released, the shaft supporting portions 23 of the hinge members 17 and 18 are released from the rubber spring 8.
It is pushed upward by the elastic restoring force of. Accordingly, the locking shaft 17C, the locking pin 18C, and the locking pins 17D, 18D perform operations opposite to the above-described operations, and as a result, the key top 14 is returned to the original position. Things.

As described in detail above, in the switch structure according to the first embodiment, the rubber spring 8 is gripped by the rubber spring holding portion 3 of the mounting frame member 1 so as to face the fixed electrode, and the MPC Since the adhesive adhesive 12 is present in a portion of the insulating sheet 11 adhered to the back side of the plate 10 in contact with the mounting projection 4,
By fitting the mounting projection 4 into the mounting through hole 9, the mounting projection 4 comes into contact with the adhesive type adhesive 12 and is fixed by bonding. In addition, the mounting through hole 9 is closed at the back end face of the MPC board 10 by the insulating sheet 11 adhered to the back face of the MPC board 10. Here, the mounting projection 4 is the insulating sheet 1
Since it is adhered to the first adhesive 12, the positioning and mutual fixing between the mounting frame member 1 and the MPC board 10 can be easily performed. Further, it becomes unnecessary to adhere and fix the rubber spring 8 on the fixed electrode.
This eliminates the need for positioning equipment and bonding jigs, and allows the use of adhesives with easy bonding conditions, thus reducing initial equipment costs and simplifying bonding work. Costs can be reduced and quality can be improved. Further, the mounting through hole 9 is provided between the mounting projection 4 of the mounting frame member 1 and the insulating sheet 1 on the back side of the MPC board 10.
1 and can prevent small dust and dust from entering the lower portion of the MPC board.

Further, the mounting through hole 9 can be formed into a simple shape by press molding, so that the maintenance of the mold can be facilitated, and the manufacturing cost of the press molding can be greatly reduced. It becomes possible to do.

The locking pin 17 of the guide support member 13
Since the keys D and 18D rotate and slide, the key switch mounting rotary part 5 and the key switch mounting sliding part 6 are formed at both ends of one end and the other end of the mounting frame member 1. This allows
The precision press forming for performing multiple precision press punching and bending of the MPC board 10 is eliminated, so that the manufacturing cost of the press forming can be greatly reduced and the maintenance and management of the mold can be facilitated. In addition, the production quality can be improved.

Further, the locking pin 17D is attached to the key switch mounting rotation section 5 and the key switch mounting sliding section 6.
The guide portion 7 is formed as an invitation structure for facilitating the incorporation of 18D. This makes it possible to easily incorporate the guide support member 11 into the mounting frame member 1, thereby reducing manufacturing costs and improving manufacturing quality.

Next, a switch structure according to a second embodiment will be described with reference to FIG. FIG. 3 is an enlarged perspective view of a part of the switch structure according to the second embodiment. Here, the switch structure is formed by integrally integrating the plurality of mounting frame members 1 of the first embodiment in a horizontal row. The mounting frame member 30 in the switch structure is formed from a synthetic resin such as an ABS resin or a polyacetal resin, and has a substantially rectangular shape. Also, the MPC plate 38 of the mounting frame member 30
A rubber spring 8 is located at a position facing the upper fixed electrode.
The mounting hole 31 (see the first embodiment) is inserted from below.
Are formed, and a rubber spring holding portion 32 that protrudes inward from one side edge of the mounting hole 31 and the other side edge (the front and rear side edge in FIG. 3) that opposes the same to form the rubber spring 8 is formed. Have been. In addition, two key switch mounting rotary portions 34, 3 corresponding to each of the large number of key switches 15 (see FIG. 1) disposed on the mounting frame member 30.
Four and two key switch mounting sliding portions 35 are formed. Each key switch mounting rotation part 34 has a mounting hole 3
The key switch mounting sliding portion 35 is formed so as to protrude upward in a substantially square shape at a position near both ends of one side edge (the front side edge in FIG. 3). It is formed in a substantially rectangular shape protruding upward at a position near both ends of the other side edge (the rear side edge in FIG. 3) facing the side edge. These key switch mounting rotary portions 34 and key switch mounting sliding portions 35 are arranged at four corners of a region where the key switch 15 is mounted, and the guide support member 13 of the key switch 15 (see FIG. 1) is provided. Mounted.
The locking pin 1 of the guide support member 13 is provided on the upper surface of each key switch mounting rotating portion 34 and the key switch mounting sliding portion 35.
Four guide portions 36, 36, 36, 36, which are guiding structures for facilitating the incorporation of 7D and 18D, are formed diagonally downward. Further, one side edge of the lower surface of each mounting hole 31 (the lower surface of the left edge in FIG. 3) is provided on the MPC plate 3.
A substantially rectangular shape formed by press forming is formed on the non-circuit pattern portion near one side (left side of each fixed contact pattern in FIG. 3) of each fixed contact pattern (covered by the rubber spring 8) on the fixed contact pattern 8 A mounting projection 33 to be fitted into the mounting through hole 37 is formed.

Further, an insulating film is formed on the MPC plate 38 for insulation, and a predetermined circuit pattern (not shown) is formed on the insulating film via conductive ink. In this circuit pattern, a comb-shaped fixed contact is provided at a portion of the mounting frame member 30 facing the substantially central position of the mounting hole 31 corresponding to each key switch 15 disposed on the mounting frame member 30. A pattern is provided. Note that portions of the circuit pattern other than the fixed contact pattern are covered with an insulating resist layer to protect the circuit pattern. Further, similar to the MPC board 10 of the first embodiment, M
PET coated with adhesive on the back of PC board 38
An insulating sheet 11 molded from a synthetic resin such as a resin is adhered. Therefore, the mounting projection 3 of the mounting frame member 30
By fitting 3 into the mounting through hole 37 of the MPC board 38, the mounting projection 33 is bonded and fixed to the insulating sheet 11 with an adhesive. In addition, the key switch mounting rotation section 34 and the key switch mounting sliding section 35 and the MPC
A rotation groove and a sliding groove are formed by the upper surface of the plate 38.

Each rubber spring 8 is inserted from below into each rubber spring holding portion 32 of the mounting frame member 30 and is gripped by the rubber spring holding portion 32, and the mounting frame member 30 is bonded to the MPC plate 38. By being fixed, the plurality of rubber springs 8 are fixed so as to face the plurality of fixed contact patterns on the MPC board 38. When the key switch 15 performs the switching operation, the rubber spring 8 has a click feeling when the pressing force applied from the guide support member 13 based on the pressing of the key top 14 becomes a load equal to or more than a certain value. And the movable electrode comes into contact with the fixed contact pattern.

The guide support member 1 of the key switch 15
3 is pressed downward against a guide portion 36 formed on the upper surface of the key switch mounting sliding portion 35 formed on the upper surface of the mounting frame member 30, and the key switch mounting slide 17 is formed. It slides into the part 35 and is slidably mounted in the key switch mounting sliding part 35. Each locking pin 18 </ b> D is pressed down against a guide portion 36 formed on the upper surface of the key switch mounting and rotating portion 34 formed on the upper surface of the mounting frame member 30, and the inside of the key switch mounting and rotating portion 34. , And is rotatably mounted in the key switch mounting and rotating portion 34.

The key switch 15 configured as described above
, When the keytop 14 is pressed, the keytop 1
The locking shaft 1 of the hinge member 17 is moved as the
7C is rotated in the locking groove 21 of each rotation locking member 19 (see FIG. 2), and each locking pin 1 of the hinge member 18 is rotated.
8C is slid horizontally in the sliding groove 22 of each sliding locking member 20. At the same time, each locking pin 17D of the hinge member 17 is slid horizontally in the key switch mounting sliding portion 35, and each locking pin 18D of the hinge member 18 is moved.
D is rotated in the key switch mounting rotation section 34.

As a result, the hinge member 17 and the hinge member 1
The shaft support 23 that supports the shaft 8 and the shaft 8 moves downward and gradually presses the rubber spring 8, and when the amount of pressing exceeds a certain limit, the rubber spring 8 is buckled. Thereby, the movable electrode in the rubber spring 8 short-circuits the fixed contact pattern, and a predetermined switching operation is performed.

When the depression of the key top 14 is released, the shaft supporting portions 23 of the hinge members 17 and 18 are released from the rubber spring 8.
It is pushed upward by the elastic restoring force of. Accordingly, the locking shaft 17C, the locking pin 18C, and the locking pins 17D, 18D perform operations opposite to the above-described operations, and as a result, the key top 14 is returned to the original position. Things.

As described in detail above, in the mounting frame member 30 in the switch structure according to the second embodiment, the first
By integrally forming the plurality of mounting frame members 1 of the embodiment, the number of parts can be significantly reduced, and the plurality of rubber springs 8 can be combined with the MPC plate 38 in one process.
By fixing it on the upper side, the number of assembling steps can be greatly reduced, and the cost of parts and the manufacturing cost can be greatly reduced. Furthermore, the number of the mounting through holes 37 for positioning and bonding and fixing the mounting frame member 30 can be reduced, so that the cost of the press die and the product quality can be improved.

Next, a switch structure according to a third embodiment will be described with reference to FIG. FIG. 4 is an enlarged perspective view of a part of the switch structure according to the third embodiment. Here, the mounting frame member and the plurality of rubber springs in the switch structure are the mounting frame member 30 and the plurality of rubber springs 8 of the switch structure according to the second embodiment.
The substrate 40 on which the mounting frame member 30 is mounted is molded from a synthetic resin such as epoxy resin, and a predetermined circuit pattern (not shown) is formed on the substrate 40 via conductive ink. . In this circuit pattern, a comb-shaped fixed contact is provided at a portion of the mounting frame member 30 facing the substantially central position of the mounting hole 31 corresponding to each key switch 15 disposed on the mounting frame member 30. A pattern is provided. Note that portions of the circuit pattern other than the fixed contact pattern are covered with an insulating resist layer to protect the circuit pattern. A substantially rectangular mounting through hole 41 is formed in a non-circuit pattern portion near one side (left side of each fixed contact pattern in FIG. 4) of each fixed contact pattern (covered by the rubber spring 8) on the substrate 40. Are formed. Further, a metal sheet 42 such as aluminum coated with an adhesive is adhered to the back surface of the substrate 40. Therefore, by fitting the mounting projection 33 of the mounting frame member 30 into the mounting through hole 41 of the substrate 40, the mounting projection 33 is bonded and fixed to the metal sheet 42 with an adhesive. Thus, a rotation groove and a slide groove are formed by the key switch mounting rotation section 34 and the key switch mounting slide section 35 and the upper surface of the substrate 40.

Each of the rubber springs 8 is inserted from below into each of the rubber spring holding portions 32 of the mounting frame member 30 and is gripped by the rubber spring holding portion 32, and the mounting frame member 30 is bonded and fixed on the substrate 40. By doing
The plurality of rubber springs 8 are fixed so as to face the plurality of fixed contact patterns on the substrate 40. When the key switch 15 performs the switching operation, the rubber spring 8 has a click feeling when the pressing force applied from the guide support member 13 based on the pressing of the key top 14 becomes a load equal to or more than a certain value. And the movable electrode comes into contact with the fixed contact pattern.

The guide support member 1 of the key switch 15
3 is pressed downward against a guide portion 36 formed on the upper surface of the key switch mounting sliding portion 35 formed on the upper surface of the mounting frame member 30, and the key switch mounting slide 17 is formed. It slides into the part 35 and is slidably mounted in the key switch mounting sliding part 35. Each locking pin 18 </ b> D is pressed down against a guide portion 36 formed on the upper surface of the key switch mounting and rotating portion 34 formed on the upper surface of the mounting frame member 30, and the inside of the key switch mounting and rotating portion 34. , And is rotatably mounted in the key switch mounting and rotating portion 34.

The key switch 15 configured as described above
, When the keytop 14 is pressed, the keytop 1
The locking shaft 1 of the hinge member 17 is moved as the
7C is rotated in the locking groove 21 of each rotation locking member 19 (see FIG. 2), and each locking pin 1 of the hinge member 18 is rotated.
8C is slid horizontally in the sliding groove 22 of each sliding locking member 20. At the same time, each locking pin 17D of the hinge member 17 is slid horizontally in the key switch mounting sliding portion 35, and each locking pin 18D of the hinge member 18 is moved.
D is rotated in the key switch mounting rotation section 34.

As a result, the hinge member 17 and the hinge member 1
The shaft support 23 that supports the shaft 8 and the shaft 8 moves downward and gradually presses the rubber spring 8, and when the amount of pressing exceeds a certain limit, the rubber spring 8 is buckled. Thereby, the movable electrode in the rubber spring 8 short-circuits the fixed contact pattern, and a predetermined switching operation is performed.

When the depression of the key top 14 is released, the shaft supporting portions 23 of the hinge members 17 and 18 are released from the rubber spring 8.
It is pushed upward by the elastic restoring force of. Accordingly, the locking shaft 17C, the locking pin 18C, and the locking pins 17D, 18D perform operations opposite to the above-described operations, and as a result, the key top 14 is returned to the original position. Things.

As described in detail above, with the substrate 40 in the switch structure according to the third embodiment, the MPC plate 38 in the second embodiment can be formed from a synthetic resin molded product, and punching by press molding or the like can be performed. It is possible to significantly reduce the manufacturing cost.
Further, by bonding the metal sheet 42 to the back surface of the substrate 40, the substrate 40 is electrically connected to the base surface, and it is possible to prevent small dust and dust from entering the lower portion of the substrate 40 from the mounting through hole 41. Will be possible.

The present invention is not limited to the first to third embodiments, and various improvements and modifications can be made without departing from the scope of the present invention. It may be as follows. (A) The mounting through hole 9 and the mounting projection 4 may be provided on only one side. (B) The mounting through-hole 9, the mounting through-hole 37, and the mounting through-hole 41 may be round holes. (C) The insulating sheet 11 may be formed of a transparent synthetic resin such as PET resin, and the adhesive 12 may be changed to an ultraviolet curable adhesive. (D) The mounting frame members 30 are formed by integrally integrating the plurality of mounting frame members 1 of the first embodiment in a horizontal row, but may be integrally formed by integrating the plurality of mounting frame members 1 in the vertical and horizontal directions. .

[0064]

As described above, according to the switch structure of the first aspect, the switching member is held and fixed to the guide holding portion of the mounting frame member so that the switching member is arranged to face the fixed electrode. The mounting projection of the frame member is fitted and fixed in a mounting through hole formed at a position near the fixed electrode on the thin plate. In addition, the mounting through hole is closed at the rear end surface of the thin plate by a sheet-like member adhered to the back surface of the thin plate. This makes it unnecessary to adhesively fix the switching member on the fixed electrode, and easily positions and adhesively fixes the substrate member and the mounting frame member by the mounting through hole formed near the fixed electrode. Becomes possible. Therefore, switching member positioning equipment and bonding jigs are not required, and an adhesive with easy bonding conditions can be employed, so that initial equipment costs can be reduced and manufacturing costs can be reduced. A simple switch structure can be provided. Further, a switch structure in which the mounting through-hole can be closed by a mounting protrusion of the switch structure and a sheet-like member on the back side of the thin plate, and small dust and dust can be prevented from entering a lower portion of the thin plate. Can be provided.

According to the switch structure of the present invention, the thin plate is made of a thin metal plate, so that the mounting through-hole can be formed in a simple shape by press molding, and the die maintenance and management is performed. And it is possible to provide a switch structure capable of greatly reducing the manufacturing cost of press forming. In addition, by bonding an insulating sheet to the back surface of the metal sheet, the metal sheet is insulated from the base surface, and it is possible to prevent small dust and dust from entering the lower part of the metal sheet through the mounting through hole. A simple switch structure can be provided.

According to the switch structure of the third aspect, the key switch mounting portions are formed at both ends of one end and the other end of the mounting frame member because the hinge member of the key switch rotates and slides. Is done. This eliminates the need for precision press forming for performing multiple precision press punching and bending of thin metal sheets, greatly reducing the manufacturing cost of press forming, and facilitating mold maintenance and management. It is possible to provide a switch structure capable of improving the manufacturing quality.

According to the switch structure of the fourth aspect, the guide portion is formed as an invitation structure for facilitating the incorporation of the hinge member into the key switch mounting portion. This makes it possible to easily incorporate the hinge member, to provide a switch structure capable of reducing manufacturing costs and improving manufacturing quality.

According to the switch structure of the fifth aspect, by integrating a plurality of mounting frame members, a plurality of switching members are held by one mounting frame member, and the mounting projections of the mounting frame member are provided. The part is fitted and fixed in the mounting through hole of the board member. As a result, the number of parts can be significantly reduced, the number of assembling steps can be significantly reduced, and a switch structure capable of greatly reducing the cost of parts and the manufacturing cost can be provided. Furthermore, it is possible to provide a switch structure capable of reducing the number of mounting through holes for positioning and bonding and fixing a mounting frame member, thereby reducing the cost of a press die and improving product quality. Can be.

Further, according to the switch structure of the sixth aspect, the thin plate can be formed of a resin molded product, so that punching by press molding or the like is eliminated, and the manufacturing cost can be greatly reduced. A switch structure can be provided. Further, by bonding the conductive sheet to the back surface of the resin thin plate, the resin thin plate is electrically connected to the base surface, and small dust and dust are prevented from entering the lower portion of the resin thin plate from the mounting through hole. A switch structure can be provided.

[Brief description of the drawings]

FIG. 1 is a perspective view showing assembling of a switch structure according to a first embodiment.

FIG. 2 is a side sectional view including a mounting through hole when the switch structure according to the first embodiment is assembled.

FIG. 3 is an enlarged perspective view of a part of a switch structure according to a second embodiment.

FIG. 4 is an enlarged perspective view of a part of a switch structure according to a third embodiment.

FIG. 5 is an enlarged perspective view showing a part of a conventional switch structure.

[Explanation of symbols]

 1, 30, 100: Switch structure 2, 31 ,: Mounting hole 3, 32: Rubber spring holding part 4, 33: Mounting projection 5, 34: Key switch mounting rotating part 6, 35: Key switch mounting sliding portion 7, 36: Guide portion 8, 112: Rubber spring 9, 37, 41: Mounting through hole 10, 38: Metal substrate printed circuit Substrate 11: Insulating sheet 12: Adhesive adhesive 13, 111: Guide and support member 14, 110: Key top 15, S: Key switch 17D, 18D: Lock pin 40 ... Substrate 42 ... Metal sheet

Claims (6)

[Claims] 1. A thin plate, a predetermined circuit pattern printed on one surface of the thin plate via an insulating film, a fixed electrode formed in the circuit pattern, and a fixed pattern formed at a position near the fixed electrode. A board member having a mounting through hole, a sheet-like member bonded to the other surface of the thin plate via an adhesive layer, and a switching member performing a switching operation in cooperation with the fixed electrode; And a mounting frame member having a guide holding portion that guides and holds the switching member, wherein the mounting protrusion is inserted through the adhesive layer when the fitting protrusion is inserted into the mounting through hole. A switch structure, wherein the switch structure is fixed to a sheet-shaped member. 2. The thin plate is formed of a metal material, the sheet-like member is formed of an insulating sheet, and the mounting through hole is formed by punching from one side of the thin plate. The switch structure according to claim 1, wherein A key switch having a key top, a pair of hinge members for supporting the key top, and a guide support member for vertically moving and guiding the key top; and a key switch formed on the mounting frame member, A key switch attachment portion to which a hinge member of a support member is detachably attached, wherein each of the hinge members is attached to the key switch attachment portion, and the switching member is connected to each of the switching members via each of the hinge members as the keytop is pressed down. The switch structure according to claim 1, wherein the switch structure is depressed. 4. The switch structure according to claim 3, wherein a guide portion for mounting the hinge member is formed on the key switch mounting portion. 5. The switching member according to claim 1, wherein a plurality of the switching members are provided on the substrate member, and a plurality of the mounting frame members are integrally provided corresponding to the respective switching members. 5. The switch structure according to any one of 4. 6. The switch structure according to claim 1, wherein the thin plate is formed of a resin, and the sheet member is formed of a conductive sheet.