TWI555273B - Electric contactor - Google Patents

Description

Electrical contact

The invention relates to the field of electronic component 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 electronic component 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 contact resistance of the electrical contact rises, resulting in withstand current. Poor characteristics. Therefore, the static contact and the movable contact are welded, and the electrical short circuit has adverse effects.

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 connected to the One end of the spring body; a bottom post connected to the other end of the spring body, such that the top post and the bottom post are relatively telescopically displaced along the height direction through the spring body; and an electrical contact member, The utility model comprises a track unit and a slide-in unit, the track unit is connected to the top column and extends substantially downward in the height direction of the spring hollow space, the slide-in unit is connected to the bottom column and is in the spring hollow space The height direction substantially extends upwardly. The track unit has a sliding groove portion extending along the height direction on the left and right sides. The sliding unit has two sliding rod members respectively located at the left and right sides of the corresponding track unit. The two sliding rod members each have a sliding fitting portion, and the sliding fitting portion is slidably embedded in the corresponding sliding groove portion of the rail unit, so that the top column and the bottom column are maintained in a non-deflected manner when the relative column is displaced. .

In an embodiment of the invention, an electrical contact is provided, the two slider members having a spacing distance therebetween, the width of the spacing distance being tapered along the height direction.

In an embodiment of the invention, an electrical contact is provided, the electrical contact member having two baffles disposed on the front and rear sides of the track unit.

In an embodiment of the invention, an electrical contact is provided, one end of the track unit having an insertion portion.

In an embodiment of the invention, an electrical contact is provided, the width of the chute portion of the rail unit being substantially greater than the width of the slip fit.

In an embodiment of the invention, an electrical contact is provided, the slider member spacing distance width being substantially greater than the width of the insertion portion.

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, 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 sliding portion is slidably embedded in the sliding groove portion, so that the top column and the bottom column are not yawed when the relative telescopic displacement is performed, thereby avoiding the problem of poor contact of the electric contact member, and the electrical contact can be increased. Current resistance to avoid adverse effects such as welding and electrical short circuits.

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

33‧‧‧Second connection

4‧‧‧Electrical contact components

41‧‧‧ Track unit

411‧‧‧Slot section

412‧‧‧Baffle

413, 413'‧‧‧ Insertion Department

42‧‧‧Slide unit

43‧‧‧First connection

44‧‧‧Second connection

421‧‧‧Slider

422‧‧‧Slip embed

H‧‧‧ Height direction

T‧‧‧ thickness direction

W‧‧‧Width direction

W1‧‧‧Width

W2‧‧‧Width

W3‧‧‧Width

W4‧‧‧Width

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 an exploded view showing the electrical contact of the first embodiment according to the present invention.

Figure 3a is a cross-sectional view showing the electrical contact of the first embodiment of the present invention in a stretched position.

Figure 3b is a cross-sectional view showing the electrical contact of the second embodiment of the present invention in the insertion portion.

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.

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 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. . In detail, the electrical contact 100 is made of a material having good electrical conductivity, such as a metal.

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 post 2 and the bottom post 3 are relatively telescopically displaced between the extension position (such as FIGS. 1 to 3a) and a compression position (such as FIG. 4) in the height direction H by the spring body 1.

As shown in FIGS. 1 and 3a, the electric contact member 4 includes a rail unit 41 and a slide-in unit 42. The rail unit 41 is coupled to the top post 2 and extends substantially downwardly in the height direction H within the spring hollow space 11. The slide-in unit 42 is coupled to the bottom post 3 and extends substantially upwardly in the height direction H within the spring hollow space 11. The rail unit 41 has a chute portion 411 on each of two sides in a width direction W and a shutter 412 on each of two sides in a thickness direction T. The chute portion 411 and the baffle 412 extend in the height direction H.

The slide-in unit 42 has two slider members 421. The two sliding rod members 421 are respectively located at the left and right sides of the corresponding rail unit 41, and the two sliding rod members have a spacing distance therebetween, and the width of the spacing distance is gradually narrowed along the height direction, so that the sliding rod The member 421 has better contact with the track unit 41. The two sliding rod members 421 each have a sliding fitting portion 422 which is slidably embedded in the sliding groove portion 411 of the rail unit 41. In the present embodiment, the slip fitting portion 422 applies a clamping force to the rail unit 41. The electric contact member 4 can maintain the non-deflection when the electric contact 100 expands and contracts between the extended position and the compressed position by the sliding unit of the rail unit 41 and the sliding unit 42.

In the present embodiment, in the extended position, the width W1 between the two slip fitting portions 422 is substantially smaller than the width W2 of the rail unit 41, so that it has a good clamping force and forms a low contact resistance.

Optionally, the electrical contact member 4 includes a first connecting portion 43 and a second connecting portion 44. The first connecting portion 43 is disposed in the spring hollow space 11 and is connected between the top pillar 2 and the rail unit 41. The second connecting portion 44 is disposed in the spring hollow space 11 and is connected between the bottom pillar 3 and the sliding unit 42.

Preferably, the width W3 of the sliding groove portion 411 is substantially equal to the width W4 of the sliding fitting portion 422, so that it has a good clamping force, forms a low contact resistance, and is less prone to yaw.

Optionally, one end of the track unit 41 has an insertion portion 413. The insertion portion 413 is located between the two slider members 421, and the width of the slider member 421 is substantially larger than the width of the insertion portion 413, so that the rail unit 41 is easily moved freely in the slide-in unit 42. In this embodiment, the insertion portion 413 is a V-shaped end. Of course, the present invention is not limited thereto. Referring to FIG. 3B, in another embodiment of the present creation, the insertion portion 413' is an arc-shaped end.

As shown in Fig. 1, in accordance with the electrical contact 100 of the first embodiment of the present invention, the top post 2 includes a shoulder 22 extending in the width direction W. The shoulder portion 22 is coupled to the first connecting portion 43 and the shoulder portion 22 is engaged with the upper end 12 of the elastic body 1.

As shown in Fig. 1, 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 is coupled to the second connecting portion 44, and the wing portion 32 is engaged by the lower end 13 of the elastic body 1.

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 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 21a of the top post 2a and the lower end portion 31a 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 21b of the top post 2b and the lower end portion 31b 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 21c of the top post 2c and the lower end portion 31c 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‧‧‧ 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‧‧‧ Track unit

413‧‧‧Insert Department

42‧‧‧Slide unit

43‧‧‧First connection

44‧‧‧Second connection

H‧‧‧ Height direction

W‧‧‧Width direction

Claims (10)

An electrical contact comprising: a spring body configured to extend and contract in a height direction and having a spring hollow space; a top post connected to one end of the spring body; and a bottom post connected to the spring body One end such that the top post and the bottom post are relatively telescopically displaced along the height direction through the spring body; and an electrical contact member including a track unit and a slide-in unit, the track unit being coupled to the top post and at The spring hollow space extends substantially downward in the height direction, the sliding unit is connected to the bottom column and extends substantially upwardly in the height direction of the spring hollow space, and the track unit has a line along the left and right sides. a sliding portion extending in a height direction, the sliding unit having two sliding rod members respectively located at right and left sides of the corresponding rail unit, the two sliding rod members each having a sliding fitting portion, the sliding fitting portion The sliding portion is slidably embedded in the corresponding sliding groove portion of the orbital unit, so that the top column and the bottom post are maintained in a non-deflected manner when the telescopic displacement is relatively large. The electrical contact of claim 1, wherein the two slider members have a separation distance therebetween, and the width of the separation distance is gradually narrowed along the height direction. The electrical contact of claim 1, wherein the electrical contact member has two baffles disposed on the front and rear sides of the track unit. The electrical contact of claim 1, wherein one end of the track unit has an insertion portion. The electrical contact of claim 1 wherein the width of the chute portion of the track unit is substantially equal to the width of the slip fit. The electrical contact of claim 4, wherein the sliding member spacing distance of the sliding unit is substantially smaller than the width of the insertion portion. 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 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.