JPH075272U - Contact piece for contact device - Google Patents

Abstract

(57) [Abstract] [Purpose] A contact piece member that can be advantageously used to fabricate a compact multi-pole contact device having short vertical and horizontal lengths. It can be manufactured by simply doing so, and the displacement width of the contact can be made sufficiently large without increasing the overall vertical width. [Structure] An intermediate portion of a strip-shaped metal plate is bent in a meandering shape, and at least two plate pieces 5, 6 are provided at the meandering portion 4.
The plate pieces 5, 6 have swing fulcrums 52, 5 at both ends.
3, 62, 63. Contact 3 at one end of the strip metal plate
To provide.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a contact piece member for a contact device, and more particularly to a contact piece member used for a multi-pole type contact device, which is proposed to exchange a large number of electric signals.

[0002]

[Prior art]

 In the above-mentioned type of multi-pole contact device, in order to make the overall shape compact, a group of contact piece members made up of a large number of juxtaposed contact piece members are arranged in two or more rows, or a large number of contact piece members are arranged. The contact pieces are arranged in a staggered manner. Under such circumstances, there is a demand for further miniaturization by further narrowing the mutual pitch of the adjacent contact points of the contact piece member group and the mutual pitch of the contact piece member row.

By the way, Japanese Utility Model Laid-Open No. 61-119288 discloses a multi-pole contact device of the above type. This is one in which a large number of contact piece members are arranged side by side and assembled into an insulative body, and the contacts provided in each contact piece member protrude above the body from above. FIG. 6 shows a contact piece member 1A having a structure similar to the contact piece member used in the multi-pole contact device described in the above publication, and the contact piece member 1A is a strip metal. One end of the plate is bent back and a contact 3A is provided on the top of the bent portion 2A, a lead terminal 4A is provided at the other end of the strip metal plate, and a seat plate portion 5A is provided at the middle of the strip metal plate. And a plate piece portion 6A extending obliquely from the end of the seat plate portion 5A is provided, and the seat plate portion 5A is provided by a support surface 7A provided on the body side as shown in FIG. Is supported.

In such a contact piece member 1A, when the contact point 3A is pushed in the direction of arrow F by coming into contact with a wiring board or a device-side terminal (not shown), the plate piece portion 6A moves near the base end portion thereof. The fulcrum 8A is displaced, and the contact 3A is displaced accordingly. In FIG. 6, the displacement width of the contact 3A is indicated by reference numeral S1.

In such a contact piece member 1A, the size of the displacement width S1 of the contact 3A is determined according to the length of the plate piece portion 6A. Therefore, in order to increase the displacement width S1, the plate piece portion 6A is Need to be long. However, if the plate piece portion 6A is lengthened, the total vertical width L1 of the contact piece member 1A becomes longer accordingly, so that when the contact piece member 1A is arranged in the vertical width direction Y, the vertical width direction Y of the contact piece member 1A is increased. The pitch between the two becomes unnecessarily wide, and the vertical width of the contact device becomes longer accordingly, which is an obstacle to the downsizing of the contact device.

On the other hand, Japanese Utility Model Laid-Open No. 3-80928 discloses a contact device that can be used for an opening / closing switch of a telephone or the like, and this contact device has the basic structure shown in FIG. There is. In the contact device of the same figure, a flange 8B is provided on a pin contact piece 1B having a contact 3B provided at the top end, and a flange 8B of the pin contact piece 1B housed in a case 9B is constantly repelled by a coil spring 10B. The contacts 3B are urged to project above the case 9B. A lead terminal 9B 'is integrally provided on the case 9B.

According to this contact device, the displacement of the contact 3B is absorbed by the contraction of the coil spring 10B, and the displacement width of the contact 3B is related to the movement allowance of the collar portion 8B in the case 9B. Even if the displacement width of 3B is increased, the total vertical width of the contact device does not become long. Therefore, there is no obstacle as described in FIG. However, in the contact device of FIG. 7, not only is the process of manufacturing the pin contact piece 1B provided with the collar portion 8B cumbersome, but the coil spring 10B is additionally required, which increases the number of parts, which increases the number of parts. There was a problem that the production cost was high.

[0008]

[Problems to be solved by the device]

 As is apparent from the above, conventionally, a contact piece member group formed by arranging a large number of contact piece members described in Japanese Utility Model Laid-Open No. 61-119288 is arranged in two rows or more rows or in a staggered manner. Even if a multi-pole contact device is configured by arranging them, it is difficult to make the contact device compact because the mutual pitch of the contact piece member rows cannot be narrowed so much.

Further, when the technique of the contact device described in Japanese Utility Model Laid-Open No. 3-80928 is applied to a multi-pole contact device, it is possible to achieve compactness to some extent, but the number of parts is mischievous. However, there is a problem in that the manufacturing cost increases.

The present invention has been made in view of the above problems, and although it is possible to manufacture it only by bending a band-shaped metal plate which is one component, the entire vertical width is approximately the same. An object of the present invention is to provide a contact piece member for a contact device, which can sufficiently widen the displacement width of the contact without making it too long.

[0011]

[Means for Solving the Problems]

 In the contact piece member for a contact device according to claim 1, an intermediate portion of a strip-shaped metal plate having a contact provided at one end is bent in a meandering shape, and is provided at the meandering portion and extends in a direction along each other. A fulcrum that allows swing displacement of the plate piece is separately formed near both ends of the plate piece.

In the contact piece member for a contact device according to a second aspect of the present invention, a contact portion is provided at one end portion and a lead terminal is provided at the other end portion. At the same time, at least two flat plate-like plate pieces extending in the direction along each other and a flat plate-like supporting piece extending between the end portions on one side of these plate pieces are provided at the meandering portion. In addition, a fulcrum that allows the swing displacement of the plate pieces is separately formed near both ends of the pair of plate pieces.

According to a third aspect of the present invention, there is provided a contact piece member for a contact device according to the second aspect, wherein one end of the strip-shaped metal plate is bent in a folded shape and a contact is provided on the top of the bent portion. At the same time, a reinforcing projection for preventing bending displacement of the bent portion with the folded start end as a fulcrum is provided at the folded start end portion of the folded-back bent portion.

[0014]

[Action]

 The contact piece member for a contact device according to claim 1, wherein when the contact is pushed, a plurality of (at least two) plate pieces provided at the meandering portion of the strip-shaped metal plate form a fulcrum near both ends thereof. It is displaced as the center. Therefore, when the length of each plate piece is the same as the length of the plate piece of the contact piece member described with reference to FIG. 6, the magnitude of the displacement range of the contact point in the contact piece member of the present invention becomes large. The displacement width of the contact of the contact piece member (there is only one plate piece portion) in FIG. 6 is larger. Further, in the contact piece member of the present invention, it is possible to increase the displacement width of the contact piece without changing the total vertical width of the contact piece member by increasing the number of plate piece portions in the meandering portion. .

The same effect is exerted also in the contact piece member for a contact device according to claim 2. In addition, in the article described in the same paragraph, since the strip-shaped metal plate is provided with a flat plate-shaped support piece portion between the one side ends of the plurality of plate piece portions at the meandering portion, It is possible to support the contact piece member on the body of the contact device by utilizing the one part. In addition, since the lead terminal is provided on the other end of the strip-shaped metal plate, it is possible to directly connect the wiring board of the contact piece member to a circuit pattern or the like by using this lead terminal. .

In the contact piece member for a contact device according to claim 3, since the reinforcing projection is provided at the folding back start end portion at the folding-back bending portion formed at one end portion of the strip-shaped metal plate, the contact is formed. Even if it is pushed, the folded-back bent portion does not displace with the folded-back start end as a fulcrum. Therefore, the influence of the displacement of the contacts is easily exerted on the pair of plate pieces, which helps to displace the contacts along the linear path.

[0017]

【Example】

 FIG. 1 is a perspective view of a contact piece member 1 according to an embodiment of the present invention, and FIG. 2 is a sectional view for explaining the operation of the contact piece member 1.

The contact piece member 1 is manufactured by bending a plurality of strip-shaped metal plates and has elasticity. That is, one end of the strip-shaped metal plate is bent in a chevron shape, a bulge-shaped contact point 3 is provided on the top of the bending point 2, and a turning-back start end portion 21 in the chevron-shaped bending point 2 is provided. A reinforcing protrusion 22 protruding toward the inner surface is formed on the inside. The reinforcing projections 22 are formed by hitting the folded back start end portion 21 with a tool. It should be noted that a reinforcing projection 24 projecting toward the inner surface side is also formed at the folded back end portion 23 in the bent portion 2 having the chevron folded shape.

The intermediate portion of the strip-shaped metal plate is bent in a meandering shape, and at the meandering portion 4, two flat plate-like plate pieces 5 and 6 extending in the direction along each other and these plate-like pieces 5 are formed. , 6 on one side, and a flat plate-shaped support piece 7 extending between the end portions 51, 61. Then, fulcrums 52 and 53 that allow the swing displacement of the plate piece portion 5 are provided in the vicinity of both end portions of the one plate piece portion 5, and the plate piece portion 6 swings near both end portions of the other plate piece portion 6. Support points 62 and 63 are formed to allow dynamic displacement. Further, a lead terminal 8 is provided on the other end of the strip-shaped metal plate. The guide pieces 75, 85, 25a, 25b are provided on the left and right sides of the support piece 7 of the meandering portion 4, the lead terminal 8, and the folding start end portion 21 and the folding end portion 23 in the folding bent portion 2, respectively. It is provided in a state of protruding. These guide piece portions 75, 85, 25a, 25b are used when the contact piece member 1 is assembled to the body 110 of the multi-pole contact device 100 described later.

In the contact piece member 1 having the above structure, when the contact 3 is pushed in the direction of arrow F in FIG. 2 by coming into contact with a wiring board, a device side terminal, or the like (not shown), the two meandering portions 4 The plate pieces 5 and 6 are displaced around the fulcrums 52, 53, 62 and 63 respectively formed at both ends thereof as illustrated by, for example, the phantom line in FIG. The displacement width S is displaced from the position of the solid line to the position of the virtual line. In this case, the bent portion 2 where the contact point 3 is provided is not displaced around the folding start end portion 21. This is because the reinforcing projections 22 provided on the folding start end portion 21 prevent displacement of the bent portion 2 around the folding start end portion 21. Therefore, when the contact 3 is pushed in the direction of the arrow F, the influence of the displacement of the contact 3 is likely to reach the two plate pieces 5 and 6, so that the contact 3 is likely to be displaced along the straight line path. .

Here, assuming that the length of one plate piece portion 5 is set to the same length as the plate piece portion 6A of the conventional contact piece member 1A described in FIG. 6, the contact piece member of FIG. 1, the displacement width S of the contact 3 becomes larger than the displacement width S1 of the contact of FIG. 6 by the displacement width related to the displacement of the other plate piece portion 6. Therefore, when the total vertical width between the contact piece member 1 of FIG. 2 and the contact piece member 1A of FIG. 6 is L = L1, the displacement width of the contacts 3 and 3A is S> S1. In other words, if the displacement width of the contacts 3 and 3A is S = S1, the total vertical width is L <L1. The bending angles θ1, θ2, θ3, θ4 of the bent portion at the meandering portion 4 shown in FIG. 2 can be variously changed, and depending on how to determine these bending angles θ1, θ2, θ3, θ4. It is possible to set the displacement direction in the vertical width direction Y of the support piece portion 7 when the contact point 3 is pushed and displaced to the left side or the right side.

Although the contact piece member 1 shown in FIGS. 1 and 2 is provided with two plate pieces 5 and 6 at the meandering portion 4, three pieces are provided at the meandering portion 4 of the strip-shaped metal plate in FIG. The plate pieces 5, 6 and 9 and the two support pieces 7 and 8 are shown. Support points 52, 53, 62, 63, 92, 93 are formed near both ends of the plate pieces 5, 6, 9, respectively. According to the contact piece member 1 having this configuration, the number of the contact piece members 5, 6, 9 that are oscillated and displaced according to the displacement of the contact 3 is one more than that in FIG. 1 or FIG. It is possible to increase the displacement width of the contact 3 or reduce the overall vertical width of the contact piece member 1 by the amount.

According to the contact piece member 1 described above, a multipole contact device is configured by arranging contact piece member groups formed by arranging many contact piece members 1 ... In two rows or in a staggered arrangement. In this case, the mutual pitch of the contact piece member rows (pitch in the vertical width direction of the contact piece member 1) can be narrowed as compared with the case of using the contact piece member 1A in FIG. It is easy to make it compact.

FIG. 3 is a schematic plan view of a multipolar contact device 100 using the contact piece member 1 having a structure similar to that of the contact piece member 1 described in FIGS. 1 and 2. In the figure, reference numeral 110 denotes a body, and this body 110 is provided with a large number of openings 120 in two rows in a staggered arrangement. As shown in FIG. 4, a large number of contact piece members 1 ... Are accommodated in two rows in a staggered arrangement in the body 110, and the folded-back bent portions 2 of each contact piece member 1 are extended from each opening 120 to the body. 110 protrudes above the upper surface of the body 110, and the terminals 8 of each contact piece member 1 protrude below the lower surface of the body 110. The guide pieces 25a, 25b, 75, 85 are slidably fitted in the sliding grooves 115 provided in the body 110. With this arrangement, when the contact point 3 is pushed, the sliding groove 115 guides the guide piece portions 25a, 25b, 75, 85, so that the contact point 3 is displaced along the linear path.

Such a multi-pole contact device 100 is mounted on, for example, the wiring board 200, and the terminal 8 is soldered to the circuit pattern of the wiring board 200. 3 and 4, the arrow Y indicates the vertical width direction of the contact piece member 1.

[0026]

[Effect of device]

 According to the invention as set forth in claim 1, when the total vertical width of the contact piece member is the same as that of the conventional example described with reference to FIG. 6, a contact piece member having a contact displacement range larger than that of FIG. It can be provided as a single component. In other words, when the displacement width of the contact is made equal to that of the conventional example shown in FIG. 6, the total vertical width of the contact piece member can be made shorter than that of the conventional example. Therefore, when a multipole contact device is constructed by arranging a plurality of contact piece member groups arranged in parallel in two or more rows or in a staggered arrangement, the contact piece members are arranged. The pitch between the rows can be narrowed, which has the effect of facilitating the compacting of the multipole contact device.

According to the second aspect of the invention, the contact piece member can be supported by the body of the contact device by utilizing the support piece portion of the meandering portion of the strip-shaped metal plate. As a result, the influence of the displacement of the contact can be easily applied to the pair of plate pieces, and the contact can be displaced along the linear path.

According to the third aspect of the present invention, the influence of the displacement of the contact can be exerted on the pair of plate pieces without causing a displacement at the folded-back bent portion at one end of the strip-shaped metal plate. The effect is that the contact can be displaced along a linear path.

[Brief description of drawings]

FIG. 1 is a perspective view of a contact piece member according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view for explaining the action of the contact piece member.

FIG. 3 is a schematic plan view of a multi-pole contact device using the contact piece member of the present invention.

4 is a sectional view taken along line IV-1V in FIG.

FIG. 5 is a schematic front view of a contact piece member according to another embodiment.

FIG. 6 is a schematic explanatory diagram of a conventional example.

FIG. 7 is a schematic explanatory view of another conventional example.

[Explanation of symbols]

 1 Contact piece member 2 Bending point 3 Contact point 4 Meandering point 5,6,9 Plate piece part 7 Support piece part 8 Lead terminal 21 Folding start end part 22 Reinforcing protrusion 52, 53, 62, 63, 92, 93 Support point

Claims (3)

[Scope of utility model registration request] 1. A strip-shaped metal plate having a contact at one end is bent in a meandering shape, and both ends of each of at least two plate pieces provided in the meandering part and extending in a direction along each other. A contact piece member for a contact device, characterized in that a fulcrum that allows swing displacement of the plate piece is formed in the vicinity. 2. A belt-shaped metal plate having a contact provided at one end and a lead terminal provided at the other end is bent in a meandering shape, and extends in a direction along the meandering portion. At least two flat plate-like plate pieces and a flat plate-like supporting piece extending between one side ends of these plate-like pieces are provided, and the pair of plate-like pieces are separately provided near both ends thereof. A contact piece member for a contact device, characterized in that a fulcrum is formed to allow swing displacement of the plate piece. 3. A strip-shaped metal plate has one end bent in a folded shape and a contact is provided on the top of the bent portion,
The contact piece member for a contact device according to claim 2, wherein a reinforcing projection for preventing bending displacement of the bent portion with the folded start end as a fulcrum is provided at the folded start end portion of the folded-back bent portion.