TW201709613A - Electric contactor - Google Patents

Abstract

An electrical contact comprises a spring, a top pillar, a bottom pillar, and an electrical contact member. The top pillar is lodged against an end of the spring, and the bottom pillar is lodged against the other end of the spring so that the top pillar and the bottom pillar are telescopically displaced in a height direction between a prolongation position and a compression position via the spring. The electrical contact member includes an insertion pillar and a clamp pillar. The insertion pillar is connected to the top pillar and extends downward alone the height direction in a hollow space of the spring. The clamp pillar is connected to the bottom pillar and extends upward alone the height direction in a hollow space of the spring.

Description

Electrical contact

This invention relates to the field of semiconductor electronic testing, and more particularly to 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.

However, the static contact and the movable contact of the conventional electrical contact are prone to yaw when they are in contact with each other, resulting in poor contact between the static contact and the movable contact, so that the current resistance of the electrical contact is not good. Poor current withstand characteristics can cause contact resistance to rise, resulting in poor welding of the static and moving contacts, and short-circuiting of electrical appliances.

Accordingly, it is an object of the present invention to provide an electrical contact that solves the problem of poor current resistance characteristics caused by poor contact between the stationary contact and the movable contact.

The technical means adopted by the present invention to solve the problems of the prior art provides an electrical contact comprising: a spring body configured to be telescoped in a height direction and having a spring hollow space; a top post, the card is abutted One end of the spring body; a bottom post that is engaged with the other end of the spring body, so that the top post and the bottom post are relatively stretched between the extended position and the compressed position in the height direction through the spring body Displacement; and an electrical contact member comprising an insertion post and a clamping member coupled to the top post and extending substantially downwardly in the height direction of the spring hollow space, the clamping member being coupled to the bottom The column extends substantially upwardly in the height direction of the spring hollow space, and the clamping member has two clamping arms arranged at right and left intervals, and an accommodating space is formed between the two clamping arms, and the accommodating space is located in the accommodating space. a lower clamping space, the width of the accommodating space is larger than the width of the clip and the space, the insertion post has an insertion portion, wherein the insertion portion of the insertion post is in the accommodating space when the extending position is With the The arm is not in contact with an inner surface of the clamping space. In the compressed position, the insertion portion of the insertion post is downwardly displaced along the height direction to be in contact with the inner surface of the clamping arm of the clamping space. The contact area of the insertion portion with the clamp arm is increased.

In an embodiment of the invention, an electrical contact is provided, the clip arm extending laterally inwardly of the clamping space with a card abutting portion, wherein a lower side edge of the card abutting portion is abutting at the extending position Contact with the insertion portion.

In an embodiment of the invention, an electrical contact is provided, the insertion portion of the insertion post being a V-shaped end, and the contact portion of the clamping member has an inclined contact adapted to the V-shaped end portion. surface.

In an embodiment of the present invention, an electrical contact is provided, the electric contact member further includes two baffles arranged in a front-rear interval, and is connected to the bottom post and extends substantially upward in the height direction of the spring hollow space. The front and rear sides of the clamping space are substantially aligned with the front and rear sides of the clamping space to prevent the insertion column from being offset.

In an embodiment of the invention, an electrical contact is provided, the top post comprising a shoulder extending in a width direction and being coupled to the spring body by the shoulder.

In an embodiment of the invention, an electrical contact is provided, the bottom post comprising a wing extending in a width direction and being coupled to the spring body by the wing.

In an embodiment of the invention, an electrical contact is provided, the width of the clamping space being substantially equal to the width of the insertion portion of the insert.

In an embodiment of the present invention, an electrical contact is provided, and the two clamping arms are respectively provided with a slanted leading edge portion, and the two inclined leading edge portions are individually inclined downward toward the clamping space for guiding The insertion portion is inserted, and in the extended position, the two inclined leading edge portions are not in contact with the insertion portion.

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

The electrical contact of the present invention has the following effects. The two clamping arms are in contact with the insertion portion, so that the insertion portion can stably lie away when moving between the extended position and the compressed position, thereby avoiding the problem that the electrical contact member is in poor contact, and can increase The current resistance characteristic of the electrical contact prevents the soldering of the insertion portion of the electrical contact or the two clamping arms of the clamping member, and the electrical short circuit and the like.

Embodiments of the present invention will be described below based on Figs. 1 to 7 . This description is not intended to limit the embodiments of the invention, but is an embodiment of the invention.

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

The spring body 1 is configured to be stretched in a height direction H and has a spring hollow space 11. As shown in FIGS. 2 and 3, the top post 2 is snapped against an upper end 12 of the spring body 1. The bottom post 3 is snapped against the lower end 13 of the spring body. The top column 2 and the bottom post 3 are relatively telescopically displaced between the extension position (such as FIGS. 2 and 3) and a compression position (such as FIG. 4) in the height direction H through the spring body 1. .

As shown in FIGS. 1 and 3, the electric contact member 4 includes an insertion post 41 and a clamping member 42. The insertion post 41 is coupled to the top post 2 and extends substantially downwardly in the height direction H within the spring hollow space 11. The clamping member 42 is coupled to the bottom post 3 and extends substantially upwardly in the height direction H within the spring hollow space 11. The clamping member 42 has two clamping arms 421 arranged at right and left intervals. An accommodating space C1 is formed between the two clamping arms 421, and a clamping space C2 is located below the accommodating space C1. The width W1 of the accommodating space C1 is greater than the width W2 of the framing space C2. The insertion post 41 has an insertion portion 411. As shown in FIG. 1 to FIG. 3, in the extended position, the insertion portion 411 of the insertion post 41 is located in the accommodating space C1 and an inner surface 424 of the clamping arm 421 in the clamping space C2. Not in contact. As shown in FIG. 4, in the compressed position, the insertion portion 411 of the insertion post 41 is displaced downward in the height direction H into the clamping space C2, and is in contact with the inner surface 424 of the clamping arm 421. And the contact area of the insertion portion 411 and the clamp arm 421 is increased with respect to the extended position.

As shown in FIG. 1 , according to the electrical contact 100 of the first embodiment of the present invention, the two clamping arms 421 are respectively provided with a slanted leading edge portion 425, and the two inclined guiding edge portions 425 are individually facing the clip. The joint space C2 is inclined downward to guide the insertion of the insertion portion 411. In the extended position, the two inclined leading edge portions 425 are not in contact with the insertion portion 411. Preferably, the lower end of the insertion portion 411 is a V-shaped end portion, thereby reducing the friction between the clamping arm 421 and the insertion portion 411. Of course, the invention is not limited thereto. The inclined guide edge portion 425 and the V-shaped end portion of the insertion portion 411 may be alternatively provided.

As shown in FIG. 1 , according to the electrical contact 100 of the first embodiment of the present invention, the clamping arm 421 has a card abutting portion 422 extending inwardly from above the receiving space C1. In the extended position, the lower edge of the engaging portion 422 is in contact with the insertion portion 411.

Preferably, the electrical contact 100 further includes two baffles 423 (see FIG. 2) arranged in a front-rear interval. The two baffles 423 are connected to the bottom post 3 and are located in the spring hollow space 11 The height direction H extends substantially upwards. The two baffles 423 are substantially anteriorly affixed to the front and rear sides of the accommodating space C1 and the splicing space C2, that is, the two clamping arms 421 and the two baffles 423 together define the accommodating space C1 and Clamp the space C2. In the compressed position, the two clamping arms 421 and the two baffles 423 are aligned with the insertion post 41 to prevent the insertion post 41 from shifting. As shown in FIG. 3, in the present embodiment, the width W1 of the accommodating space C1 is greater than the width W3 of the insertion portion 411 of the insertion post 41. Of course, the invention is not limited thereto. The width W1 of the accommodating space C1 may be substantially equal to the width W3 of the insertion portion 411 of the insertion post 41.

As shown in FIG. 1, according to the electrical contact 100 of the first embodiment of the present invention, the width W2 of the clamping space C2 is gradually narrowed upward, so that the two clamping arms 421 are tightly pressed in the compressed state. The insertion column 41 is clamped.

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 portion 22 extending in the width direction W. The shoulder 22 is connected to the insertion post 41, and the shoulder 22 is in contact with the upper end 11 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 bottom post 3 includes a wing portion 32 extending in the width direction W, the wing portion 32 being coupled to The clamping member 42 and the wing portion 32 are in contact with the lower end 12 of the elastic body 1.

As shown in FIG. 1 to FIG. 4, according to the electrical contact 100 of the first embodiment of the present invention, an upper end portion 21 of the top post 2 and a lower end portion 31 of the bottom post 3 are a rectangular portion. . Of course, the invention is not limited thereto. As shown in Fig. 5, in an electric contact 100a according to a second embodiment of the present invention, the upper end portion 21 of the top post 2a and the lower end portion 31 of the bottom post 3a are a trapezoidal portion. As shown in Fig. 6, in an electric contact 100b according to a third embodiment of the present invention, the upper end portion 21 of the top post 2b and the lower end portion 31 of the bottom post 3b are tapered portions. As shown in Fig. 7, in the electric contact 100c of a fourth embodiment of the present invention, the upper end portion 21 of the top post 2c and the lower end portion 31 of the bottom post 3c are a dovetail portion. Of course, the invention is not limited thereto. The shape of the upper end portion 21 of the top 2 and the lower end portion 31 of the bottom post 3 may be different from each other.

The above description and description are only illustrative of the preferred embodiments of the present invention, and those of ordinary skill in the art can make other modifications in accordance with the scope of the invention as defined below and the description above, but such modifications should still be It is within the scope of the invention to the invention of the invention.

100, 100a, 100b, 100c‧‧‧ electrical contacts
1‧‧‧Spring body
11‧‧‧Spring hollow space
12‧‧‧Upper
13‧‧‧Bottom
2, 2a, 2b, 2c‧‧‧ top column
21‧‧‧Upper
22‧‧‧ shoulder
3, 3a, 3b, 3c‧‧‧ bottom column
31‧‧‧ lower end
32‧‧‧ wing
4‧‧‧Electrical contact components
41‧‧‧ Insert column
411‧‧‧Insert Department
42‧‧‧Clamping parts
421‧‧‧ clip arm
422‧‧‧ Cards
423‧‧‧Baffle
424‧‧‧ inner surface
425‧‧‧Tilting edge
C1‧‧‧ accommodating space
C2‧‧‧ clip

Figure 1 is a front elevational view showing an electrical contact in accordance with a first embodiment of the present invention. Fig. 2 is an exploded view showing the electrical contact of the first embodiment according to the present invention. Fig. 3 is a cross-sectional view showing the electric contact according to the first embodiment of the present invention in a stretched position. Figure 4 is a cross-sectional view showing the electrical contact of the first embodiment of the present invention in a compressed position. Figure 5 is a front elevational view showing an electrical contact in accordance with a second embodiment of the present invention. Figure 6 is a front elevational view showing an electrical contact in accordance with a third embodiment of the present invention. Figure 7 is a front elevational view showing an electrical contact in accordance with a fourth embodiment of the present invention.

100‧‧‧ electrical contacts

1‧‧‧Spring body

11‧‧‧Spring hollow space

12‧‧‧Upper

13‧‧‧Bottom

2‧‧‧Top column

21‧‧‧Upper

22‧‧‧ shoulder

3‧‧‧ bottom column

31‧‧‧ lower end

32‧‧‧ wing

4‧‧‧Electrical contact components

41‧‧‧ Insert column

42‧‧‧Clamping parts

H‧‧‧ Height direction

W‧‧‧Width direction

Claims (10)

An electric contact comprising: a spring body configured to extend and contract in a height direction and having a spring hollow space; a top post that is engaged with one end of the spring body; and a bottom post that is engaged with the spring body The other end of the column and the bottom post are relatively telescopically displaced between the extended position and the compressed position in the height direction through the spring body; and an electrical contact member including an insertion post and a clamping The insertion post is coupled to the top post and extends substantially downwardly in the height direction of the spring hollow space, the clamping member is coupled to the bottom post and extends substantially upwardly in the height direction of the spring hollow space. The clamping member has two clamping arms arranged at right and left intervals, and an accommodating space is formed between the two clamping arms, and a clamping space below the accommodating space, the accommodating space has a width larger than the clip The insertion post has an insertion portion, wherein the insertion portion of the insertion post is located in the accommodating space and is not in contact with an inner surface of the clamping space of the clamping space. At the pressure Position, the insertion portion is inserted into the column of the bit line moves down the clamping space to the inner surface of the clamp arm in contact with the engagement space of the clip to increase the contact area with the insertion portion of the clamp arm along the height direction. The electrical contact of claim 1, wherein the electrical contact member further comprises two baffles arranged in a front-rear interval, connected to the bottom post and extending substantially upwardly in the height direction of the spring hollow space, the baffle The front and rear sides of the clamping space are substantially aligned with each other to prevent the insertion post from being offset. The electrical contact of claim 1, wherein the clamping arm extends laterally inwardly of the receiving space with a latching portion, wherein a lower edge of the latching portion is in contact with the bottom edge of the latching portion Insertion section. The electrical contact of claim 1, wherein the insertion portion of the insertion post is a V-shaped end, and the surface of the clamping arm of the clamping member is adapted to the V-shaped end. The electrical contact of claim 1, wherein the top post includes a shoulder extending in a width direction and is coupled to the spring body by the shoulder. The electrical contact of claim 1, wherein the bottom post comprises a wing extending in a width direction and is coupled to the spring body by the wing. The electrical contact of claim 1, wherein the width of the accommodating space is substantially equal to the width of the insertion portion of the insertion post. The electrical contact of claim 1, wherein the two clamping arms are respectively provided with a slanted leading edge portion, and the two inclined guiding edge portions are individually inclined downward toward the clamping space for guiding the insertion portion. Inserted, in the extended position, the two inclined leading edge portions are not in contact with the insertion portion. The electrical contact of claim 1, wherein an upper end portion of the top post is a trapezoidal portion, a rectangular portion, a tapered portion or a dovetail portion. The electrical contact of claim 1, wherein the lower end of the bottom post is a trapezoidal portion, a rectangular portion, a tapered portion or a dovetail portion.