TW201644110A - Electric contactor - Google Patents

Abstract

An electric contactor comprises a spring, a top pillar, a bottom pillar, and an electrical contacting member. The electrical contacting member includes a slide-contact portion and a fixed portion. A contact portion of the slide-contact portion is contacted with a contact corresponding portion of the fixed portion in a transverse direction to form a stable contact pressure therebetween when in the retracted position. Thus, the resistance to current of the electric contactor is increased, and the excess of the contact resistance of the electric contactor since the insufficiency of the contact pressure is solved.

Description

Electrical contact

The present invention relates to the field of semiconductor electronic testing, and more particularly to the design of an electrical contact.

The electrical contact is disposed in the conductive loop of the electrical appliance, and can be divided into a fixed electrical contact, a breakable electrical contact, and a movable electrical contact according to the structure. The power-off contact has the advantages of fast breaking speed and is widely used in the field of semiconductor electronic testing, and includes an elastic body, a static contact and a moving contact. When the elastic body is stretched, the static contact and the movable contact are separated from each other to be in a power-off state. When the elastic body contracts, the static contact and the movable contact contact each other to realize electrical signal conduction.

Since the contact resistance of the electrical contact is one of the key factors affecting its performance, the general electrical contact is made of copper, brass, bronze, etc., and the surface of the electrical contact is tinned or lead-tin alloy. Prevent the problem of excessive contact resistance caused by oxidation reaction of the electrical contacts. However, the most likely cause of the increase in contact resistance is the insufficient contact pressure between the stationary contact and the movable contact. An increase in contact resistance can result in undesirable effects such as fusion welding of the stationary contact and the moving contact, and short circuit of the electrical device.

Accordingly, it is an object of the present invention to provide an electrical contact that solves the problem of excessive contact resistance due to insufficient contact pressure.

The technical means adopted by the present invention to solve the problems of the prior art provides an electrical contact comprising: an elastomer, a top post, a bottom post, and an electrical contact member. The elastomer has a wave configuration with an elastic force that expands and contracts in a height direction. The top post is coupled to an upper end of the elastomer. The bottom post is attached to the lower end of the elastomer. The bottom post and the top post are relatively telescopically slipped between the extended position and the retracted position in the height direction by the elastic body. The electric contact member includes a sliding contact column and a fixing post. The sliding contact member is coupled to the top post and extends substantially downward in the height direction apart from the elastic body. The fixing post is coupled to the bottom post and spaced apart from the elastomer to extend substantially upwardly in the height direction. The sliding column and the fixing column respectively have a facing side facing each other in a lateral direction perpendicular to the height direction. A contact portion is disposed on a side of the sliding column, and a contact portion is disposed on a side of the mounting post. When the top post and the bottom post are relatively telescopically slipped between the extended position and the retracted position, the facing side of the sliding post maintains at least partially facing the side facing of the fixed post. In the extended position, the sliding column is spaced apart from the fixed post in the lateral direction without contact. In the retracted position, the contact portion of the sliding column is in contact with the contact portion of the fixing post in the lateral direction to form a conductive path.

In an embodiment of the invention, an electrical contact is provided, the bottom post including a wing extending in the lateral direction, the fixed post being coupled to the wing.

In an embodiment of the invention, an electrical contact is provided, the top post comprising a shoulder extending in the lateral direction, the sliding post being coupled to the shoulder.

In an embodiment of the invention, an electrical contact is provided, the contact portion being a convex portion, and the contact corresponding portion having a pair of inclined faces that should be convex.

In an embodiment of the invention, an electrical contact is provided, and the elastic body, the fixed post, and the sliding post are sequentially arranged in the lateral direction.

In an embodiment of the invention, an electrical contact is provided, the side of the sliding contact post being provided with a stop portion that resists a blocked portion of the fixed post when in the retracted position.

In an embodiment of the invention, an electrical contact is provided, the blocked portion being a raised portion disposed on a side facing side of the fixed post.

In an embodiment of the invention, an electrical contact is provided, the number of the electrical contact members is two, and the two electrical contact members are disposed to extend in the height direction on the outer sides of the elastic body respectively. .

In an embodiment of the invention, an electrical contact is provided, and an upper end portion of the top post and/or a lower end portion of the bottom post is a trapezoidal portion, a rectangular portion, a tapered portion or a dovetail portion. .

In an embodiment of the invention, an electrical contact is provided, the transverse direction being the width direction of the elastomer.

The electrical contact of the present invention has the following effects. When in the retracted position, the contact portion of the sliding contact column contacts the corresponding contact portion of the fixed post to form a conductive path, and the contact portion of the sliding contact column forms a stable contact pressure with the contact portion of the fixed post. Therefore, the contact resistance does not rise, and the current resistance characteristic of the electrical contact can be increased to avoid adverse effects such as welding of the sliding contact column of the electrical contact with the fixed post and short circuit of the electric appliance.

Hereinafter, embodiments of the present invention will be described with reference to Figs. 1 to 6 . This description is not intended to limit the embodiments of the invention, but is an embodiment of the invention.

As shown in FIG. 1 and FIG. 2, an electrical contact 100 according to a first embodiment of the present invention comprises: an elastic body 1, a top post 2, a bottom post 3, and an electrical contact member 4. .

The elastic body 1 has a wave configuration and has an elastic force that expands and contracts in a height direction H. The top column 2 is connected to an upper end 11 of the elastic body 1. The bottom post 3 is connected to the lower end 12 of the elastomer 1. The bottom post 2 and the top post 1 are relatively telescopically slipped between the extended position (as shown in FIG. 1) and a retracted position (as shown in FIG. 2) in the height direction H by the elastic body 1.

The electric contact member 4 includes a sliding contact 41 and a fixing post 42. The sliding member 41 is coupled to the top post 2 and spaced apart from the elastic body 1 by a distance S1 and extends substantially downward in the height direction H. The fixing post 42 is connected to the bottom post 3 and is spaced apart from the elastic body 1 by a distance S2 and extends substantially upward in the height direction H. A facing side 411 of the sliding column 41 and a facing side 421 of the fixing post 42 face each other in a transverse direction T perpendicular to the height direction H. In the first embodiment of the invention, the transverse direction T is the width direction of the elastic body 1. Of course, the invention is not limited thereto. Alternatively, the transverse direction T may also be in the thickness direction of the elastic body 1.

As shown in FIGS. 1 and 2, when the top post 2 and the bottom post 3 are relatively telescopically slipped between the extended position and the retracted position, the facing side 411 of the sliding post 41 and the fixing post 42 are as shown in FIG. 1 and FIG. The side-facing 421 system is maintained at least partially facing each other. The contact side 411 of the sliding column 41 is provided with a contact portion 412, and the facing side 421 of the fixing post 42 is provided with a contact corresponding portion 422. As shown in Fig. 1, in the extended position, the sliding column 41 and the fixing post 42 are spaced apart from each other in the lateral direction T. As shown in FIG. 2, in the retracted position, the contact portion 412 of the sliding contact 41 contacts the contact corresponding portion 422 of the fixing post 42 in the lateral direction T to form a conductive path.

As shown in FIG. 1 and FIG. 2, according to the electrical contact 100 of the first embodiment of the present invention, the contact portion 412 is a convex portion, and the contact corresponding portion 421 has a pair of convex portions. The inclined surface of the part. When the top post 2 is contracted relative to the bottom post 3 in the height direction H, the convex portion gradually presses the fixing post 42 by the inclined surface, thereby the sliding post 41 and the fixing post 42 A stable contact force is formed to increase the withstand current of the electrical contact 100. In the retracted position, the contact portion 412 of the sliding column 41 is pushed toward the contact corresponding portion 422 of the fixing post 42 to form a stable contact pressure between the sliding column 41 and the fixing post 42, thereby increasing The current resistance of the electrical contacts and the increase in contact resistance.

As shown in FIGS. 1 and 2, in the first embodiment of the present invention, the elastic body 1, the fixing post 42, and the sliding contact 41 are sequentially arranged in the lateral direction T. That is, the facing side 411 of the sliding column 41 is facing an inner side of the elastic body 1, and the facing side 421 of the fixing post 42 is an outer side facing away from the elastic body 1. Optionally, the elastic body 1, the sliding contact 41, and the fixing post 42 are sequentially arranged along the lateral direction T. That is, the facing side 411 of the sliding column 41 is an outer side facing away from the elastic body 1, and the facing side 421 of the fixing post 42 is facing an inner side of the elastic body 1.

As shown in FIGS. 1 and 2, in accordance with the electrical contact 100 of the first embodiment of the present invention, the top post 2 includes a shoulder 21 extending in the lateral direction T, the sliding contact 41 Connected to the shoulder 21 . The bottom post 3 includes a wing portion 31 extending in the transverse direction T, and the fixing post 42 is coupled to the wing portion 31.

As shown in FIGS. 1 and 2, in accordance with the electrical contact 100 of the first embodiment of the present invention, a facing portion 411 of the sliding column 41 is provided with a stopper portion 413. The stopper portion 413 is a plane extending in the lateral direction T. In the retracted position, the blocking portion 413 resists a receiving portion 423 of the fixing post 42. The receiving portion 423 is a convex portion provided on the side 421 of the fixing post 42.

As shown in FIG. 1 and FIG. 2, according to the electrical contact 100 of the first embodiment of the present invention, an upper end portion 22 of the top post 2 and a lower end portion 32 of the bottom post 3 are a rectangular portion. . Of course, the invention is not limited thereto. In an electric contact 100a according to a second embodiment of the present invention, the upper end portion 22a of the top post 2a and the lower end portion 32a of the bottom post 3a are a trapezoidal portion. In an electric contact 100b according to a third embodiment of the present invention, the upper end portion 22b of the top post 2b and the lower end portion 32b of the bottom post 3b are tapered portions. In the electric contact 100c of a fourth embodiment of the present invention, the upper end portion 22c of the top post 2c and the lower end portion 32c of the bottom post 3c are a dovetail portion. Of course, the invention is not limited thereto. The shape of the upper end portion 22 of the top pillar 2 and the lower end portion 32 of the bottom pillar 3 may be different from each other. For example, the upper end portion 22 of the top post 2 is the rectangular portion, and the lower end portion 32b of the bottom post 3b is the tapered portion.

As shown in FIG. 6, an electrical contact 100d according to a fifth embodiment of the present invention has two electrical contact members 4a, 4b, and the two electrical contact members 4a, 4b are disposed to be respectively elastic. Both sides of the lateral direction T of the body 1 extend in the height direction H.

The above description and description are only illustrative of the preferred embodiments of the present invention, and those having ordinary skill in the art may make other modifications in accordance with the scope of the patent application as defined below and the above description, but such modifications are still It is the creative spirit of this creation and is within the scope of this creation.

100, 100a, 100b, 100c, 100d‧‧‧ electrical contacts
1‧‧‧ Elastomers
11‧‧‧Upper
12‧‧‧Bottom
2, 2a, 2b, 2c‧‧‧ top column
21‧‧‧ shoulder
22‧‧‧Upper
3, 3a, 3b, 3c‧‧‧ bottom column
31‧‧‧ wing
32‧‧‧Bottom
4, 4a, 4b‧‧‧ electrical contact components
41‧‧‧Sliding column
411‧‧‧ facing side
412‧‧‧Contacts
413‧‧‧stops
42‧‧‧Fixed column
421‧‧‧ facing side
422‧‧‧Contact Correspondence Department
423‧‧‧Retained part
H‧‧‧ Height direction
S1, S2‧‧‧ spacing
T‧‧‧ transverse direction

Figure 1 is a front elevational view showing an electrical contact in a stretched position in accordance with a first embodiment of the present invention. Fig. 2 is a front elevational view showing the electrical contact of the first embodiment according to the present invention in a retracted position. Figure 3 is a front elevational view showing an electrical contact in accordance with a second embodiment of the present invention. Figure 4 is a front elevational view showing an electrical contact in accordance with a third embodiment of the present invention. Figure 5 is a front elevational view showing an electrical contact in accordance with a fourth embodiment of the present invention. Figure 6 is a front elevational view showing an electrical contact in accordance with a fifth embodiment of the present invention.

100‧‧‧ electrical contacts

1‧‧‧ Elastomers

11‧‧‧Upper

12‧‧‧Bottom

2‧‧‧Top column

21‧‧‧ shoulder

22‧‧‧Upper

3‧‧‧ bottom column

31‧‧‧ wing

32‧‧‧Bottom

4‧‧‧Electrical contact components

41‧‧‧Sliding column

411‧‧‧ facing side

412‧‧‧Contacts

413‧‧‧stops

42‧‧‧Fixed column

421‧‧‧ facing side

422‧‧‧Contact Correspondence Department

423‧‧‧Retained part

H‧‧‧ Height direction

S1, S2‧‧‧ spacing

T‧‧‧ transverse direction

Claims (10)

An electrical contact comprising: an elastic body in a wave configuration having an elastic force extending and contracting in a height direction; a top post connected to an upper end of the elastic body; and a bottom post connected to the elastic body At the lower end, the bottom post and the top post are relatively telescopically slidable between the extended position and the retracted position in the height direction by the elastic body; and an electric contact member including a sliding contact column and a fixed post The sliding contact member is coupled to the top post and extends substantially downwardly along the height direction apart from the elastic body, the fixing post is coupled to the bottom post and extends substantially upwardly along the height direction along the elastic body, and the sliding portion The contact post and the fixing post respectively have a facing side facing each other in a lateral direction perpendicular to the height direction, and a contact portion is disposed on a side of the sliding post, and a contact portion is disposed on a side of the fixing post. Wherein, when the top post and the bottom post are relatively stretched and slid between the extended position and the retracted position, the facing side of the sliding post maintains at least partially facing the side of the fixed post, and Stretch In the position, the sliding column is spaced apart from the fixing column in the lateral direction, and in the retracted position, the contact portion of the sliding column and the contact portion of the fixing post are in the lateral direction. The upper phase contacts to form a conductive path. The electrical contact of claim 1, wherein the bottom post includes a wing extending in the lateral direction, the fixed post being coupled to the wing. The electrical contact of claim 1, wherein the top post includes a shoulder extending in the lateral direction, the sliding post being coupled to the shoulder. The electrical contact of claim 1, wherein the contact portion is a convex portion, and the contact corresponding portion has a pair of inclined faces that should be convex portions. The electrical contact of claim 1, wherein the elastic body, the fixed post, and the sliding post are sequentially arranged in the lateral direction. The electrical contact of claim 1, wherein the sliding column is provided with a stopping portion facing the side, and in the retracted position, the blocking portion resists a receiving portion of the fixing post. The electrical contact of claim 6, wherein the receiving portion is a convex portion disposed on a side of the fixing post. The electrical contact of claim 1, wherein the number of the electrical contact members is two, and the two electrical contact members are disposed to extend in the height direction on both outer sides of the elastic body. The electrical contact of claim 1, wherein an upper end of the top post and/or a lower end of the bottom post is a trapezoidal portion, a rectangular portion, a tapered portion or a dovetail portion. The electrical contact of claim 1, wherein the lateral direction is the width direction of the elastomer.