CN210954121U

CN210954121U - Elastic contact probe for circuit testing

Info

Publication number: CN210954121U
Application number: CN201921880644.9U
Authority: CN
Inventors: 方经军
Original assignee: Suzhou Stende Electronic Technology Co Ltd
Current assignee: Suzhou Stende Electronic Technology Co Ltd
Priority date: 2019-11-04
Filing date: 2019-11-04
Publication date: 2020-07-07
Anticipated expiration: 2029-11-04

Abstract

The utility model discloses an elastic contact probe that circuit test was used relates to probe technical field, including needle tubing and removal needle axle, the blind hole has been seted up to the inside of needle tubing, it includes contact jaw and clamping part to remove the needle axle, clamping part is located the blind hole and contacts with the inner wall of needle tubing, the cavity has been seted up to the inside of removing the needle axle, the bottom inner wall fixedly connected with telescopic link of blind hole, the top of telescopic link and the inner wall fixed connection of contact jaw, the spring has been cup jointed in the outside of telescopic link, the outside of spring is provided with the insulating cylinder, the top fixedly connected with card clamping part of needle tubing. The utility model discloses when using, because the insulating cylinder has kept apart spring and needle tubing, consequently can not have the electric current to pass through on the spring to can avoid the spring to be burnt out by electric current in the twinkling of an eye, through the cooperation of clamping the portion with the card, can make to remove the needle shaft and can only remove in the blind hole.

Description

Elastic contact probe for circuit testing

Technical Field

The utility model relates to a probe technical field, in particular to elastic contact probe that circuit test was used.

Background

Spring contact probes are widely used in battery holders, electrical connectors, or probe cards. The elastic contact probe in the prior art comprises a needle cylinder, a needle shaft and a compression spring, wherein the needle shaft is arranged in the needle cylinder, a contact end is exposed, the compression spring is also arranged in the needle cylinder and is compressed between the needle cylinder and the needle shaft to provide proper elastic thrust for the needle shaft, after the needle shaft is compressed inwards for a certain distance, a conductive part on the needle shaft contacts a conductive part on the inner wall of the needle cylinder to conduct a connecting circuit of the needle shaft and the elastic contact probe, a gap exists between the needle cylinder and the needle shaft due to size error, make the torsion part of compressed compression spring contact the conducting part of cylinder inner wall, and form a conducting path with the compression spring bottom in contact position, when the needle shaft received or output electric power, compression spring also can the short circuit circular telegram to produce heavy current in the twinkling of an eye and pass through compression spring, and make compression spring generate heat fast and burn out, lose elasticity, thereby make the elastic contact probe lose effect.

Therefore, it is necessary to provide a resilient contact probe for circuit testing to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an elastic contact probe that circuit testing was used to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an elastic contact probe for circuit testing, includes needle tubing and removal needle shaft, the blind hole has been seted up to the inside of needle tubing, it includes contact jaw and clamping part to remove the needle shaft, clamping part is located the blind hole and contacts with the inner wall of needle tubing, the cavity has been seted up to the inside of removing the needle shaft, the bottom inner wall fixedly connected with telescopic link of blind hole, the top of telescopic link and the inner wall fixed connection of contact jaw, the spring has been cup jointed in the outside of telescopic link, the outside of spring is provided with the insulating cylinder, the top fixedly connected with card of needle tubing is held the portion.

Optionally, one end of the spring is fixedly connected with the inner wall of the bottom end of the blind hole, and the other end of the spring is fixedly connected with the inner wall of the contact end.

Optionally, the bottom end of the insulating cylinder is fixedly connected with the inner wall of the bottom end of the blind hole.

Optionally, the contact end penetrates through the top end of the blind hole and is located outside the needle tube.

Optionally, the equal fixedly connected with slide rail in both sides of insulating cylinder, the equal fixedly connected with sliding block of bottom both sides inner wall of removal needle axle, the sliding block is close to the one end and the slide rail sliding connection of slide rail.

Optionally, both sides of the needle tube are fixedly connected with flanges.

The utility model discloses a technological effect and advantage:

1. the utility model discloses when using, be used for switching on an electrode when this elastic contact probe, the contact jaw of removing the needle axle can be used for the contact the electrode, along with the elastic contact probe to the electrode application of force, in the blind hole that contracts in the removal needle axle for the spring is compressed, and produces elastic thrust, lets the contact jaw can contact the electrode with appropriate strength, simultaneously, also can switch on with the needle tubing after contracting a distance in the removal needle axle, at this moment, because the insulator has kept apart spring and needle tubing, consequently can not have the electric current to pass through on the spring, thereby can avoid the spring to be burnt by electric current in the twinkling of an eye.

2. The utility model discloses a cooperation of clamping part and card holding part can be so that remove the needle axle and only can remove in the blind hole, and through the cooperation setting of slide rail and sliding block, can play the guide effect to the removal that removes the needle axle, the telescopic link plays limiting displacement to the spring, the condition that appears rocking when can preventing that the spring from being compressed.

Drawings

Fig. 1 is a schematic sectional view of the structure of the present invention.

Fig. 2 is a schematic view of the structure of the insulating cylinder of the present invention.

In the figure: 1. a needle tube; 2. moving the needle shaft; 3. blind holes; 4. a contact end; 5. a locking part; 6. a telescopic rod; 7. a spring; 8. an insulating cylinder; 9. a chucking section; 10. a slide rail; 11. a slider; 12. a flange.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "disposed," "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; may be a mechanical connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The utility model provides an elastic contact probe for circuit testing as shown in figure 1-2, which comprises a needle tube 1 and a movable needle shaft 2, a blind hole 3 is arranged in the needle tube 1, the movable needle shaft 2 comprises a contact end 4 and a clamping part 5, the contact end 4 penetrates through the top end of the blind hole 3 and is arranged outside the needle tube 1, the clamping part 5 is arranged in the blind hole 3 and is contacted with the inner wall of the needle tube 1, a cavity is arranged in the movable needle shaft 2, a telescopic rod 6 is fixedly connected with the inner wall of the bottom end of the blind hole 3, the top end of the telescopic rod 6 is fixedly connected with the inner wall of the contact end 4, a spring 7 is sleeved outside the telescopic rod 6, one end of the spring 7 is fixedly connected with the inner wall of the bottom end of the blind hole 3, the other end of the spring 7 is fixedly connected with the inner wall of the contact end 4, an insulating tube 8, the two sides of the insulating cylinder 8 are fixedly connected with sliding rails 10, the inner walls of the two sides of the bottom end of the movable needle shaft 2 are fixedly connected with sliding blocks 11, one end of each sliding block 11, which is close to the corresponding sliding rail 10, is slidably connected with the corresponding sliding rail 10, the top end of the needle tube 1 is fixedly connected with a clamping part 9, the two sides of the needle tube 1 are fixedly connected with flanges 12, the flanges 12 can be used for fixing the depth of the needle tube 1 inserted into a fixing hole (not shown) when the needle tube 1 is inserted into the fixing hole to ensure that the blind hole 3 can protrude on a preset plane, the movable needle shaft 2 can only move in the blind hole 3 through the matching of the clamping part 5 and the clamping part 9, the sliding rails 10 and the sliding blocks 11 can guide the movement of the movable needle shaft 2, the telescopic rod 6 can limit the spring 7, and can prevent the spring 7 from shaking when being compressed, the insulating cylinder 8 can isolate the spring 7 from the needle tube 1, so that current can be effectively prevented from passing through the spring 7, the spring 7 can be prevented from being burnt by instant current, when the elastic contact probe is used for conducting an electrode, the contact end 4 of the movable needle shaft 2 can be used for contacting the electrode, along with the force application of the elastic contact probe to the electrode, the movable needle shaft 2 is retracted into the blind hole 3, the spring 7 is compressed, elastic thrust is generated, the contact end 4 can contact the electrode with proper force, meanwhile, the movable needle shaft 2 is retracted for a distance and then can be conducted with the needle tube 1, at the moment, the insulating cylinder 8 isolates the spring 7 from the needle tube 1, so that no current can pass through the spring 7, and the spring 7 can be prevented from being burnt by instant current.

This practical theory of operation: when the elastic contact probe is used for conducting an electrode, the contact end 4 of the movable needle shaft 2 can be used for contacting the electrode, along with the application of force to the electrode by the elastic contact probe, the movable needle shaft 2 is retracted into the blind hole 3, so that the spring 7 is compressed to generate elastic thrust, the contact end 4 can contact the electrode with proper force, and meanwhile, the movable needle shaft 2 is also conducted with the needle tube 1 after being retracted for a certain distance, at the moment, because the insulating cylinder 8 isolates the spring 7 from the needle tube 1, no current can pass through the spring 7, and the spring 7 can be prevented from being burnt by instant current.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides an elasticity contact probe that circuit test was used, includes needle tubing (1) and removal needle axle (2), its characterized in that: blind hole (3) have been seted up to the inside of needle tubing (1), remove needle axle (2) including contact jaw (4) and clamping part (5), clamping part (5) are located blind hole (3) and contact with the inner wall of needle tubing (1), the cavity has been seted up to the inside of removing needle axle (2), the bottom inner wall fixedly connected with telescopic link (6) of blind hole (3), the top of telescopic link (6) and the inner wall fixed connection of contact jaw (4), spring (7) have been cup jointed in the outside of telescopic link (6), the outside of spring (7) is provided with insulator cylinder (8), the top fixedly connected with card of needle tubing (1) is held portion (9).

2. The elastic contact probe for circuit testing as claimed in claim 1, wherein:

one end of the spring (7) is fixedly connected with the inner wall of the bottom end of the blind hole (3), and the other end of the spring (7) is fixedly connected with the inner wall of the contact end (4).

3. The elastic contact probe for circuit testing as claimed in claim 1, wherein:

the bottom end of the insulating cylinder (8) is fixedly connected with the inner wall of the bottom end of the blind hole (3).

4. The elastic contact probe for circuit testing as claimed in claim 1, wherein:

the contact end (4) penetrates through the top end of the blind hole (3) and is positioned outside the needle tube (1).

5. The elastic contact probe for circuit testing as claimed in claim 1, wherein:

the equal fixedly connected with slide rail (10) in both sides of insulating cylinder (8), the equal fixedly connected with sliding block (11) of bottom both sides inner wall of removal needle axle (2), sliding block (11) are close to the one end and the slide rail (10) sliding connection of slide rail (10).

6. The elastic contact probe for circuit testing as claimed in claim 1, wherein:

both sides of the needle tube (1) are fixedly connected with flanges (12).