CN216121035U

CN216121035U - Connect stable spring probe

Info

Publication number: CN216121035U
Application number: CN202122720549.6U
Authority: CN
Inventors: 赵胤; 刘勇
Original assignee: Yingtan Pulixun Precision Technology Co ltd
Current assignee: Yingtan Pulixun Precision Technology Co ltd
Priority date: 2021-11-08
Filing date: 2021-11-08
Publication date: 2022-03-22
Anticipated expiration: 2031-11-08

Abstract

The utility model provides a spring probe with stable connection, which comprises a needle shaft, a spring and a needle tube, wherein the needle tube forms a blind hole along the axis direction, the spring is positioned in the needle tube, the needle shaft comprises a head part and a tail part, the needle tube is sleeved outside the needle shaft, the tail part is positioned inside the blind hole, the head part extends out of the blind hole and extends to the outside, an insulating pad is arranged between the needle shaft and the spring, a convex block is arranged at the tail part of the needle shaft, a groove is arranged on the insulating pad, the convex block is matched with the groove, a steel ball is embedded in the insulating pad, and part of the spherical surface of the steel ball exceeds the insulating pad and is exposed outside. The utility model solves the problem that the connection between the needle head and the needle tube is unstable under the condition of large vibration.

Description

Connect stable spring probe

Technical Field

The utility model relates to the technical field of probes, in particular to a spring probe with stable connection.

Background

The Pogo Pin is generally applied to precise connection in electronic products such as mobile phones, communication, automobiles, medical treatment, aerospace and the like; because the Pogo Pin is a very fine probe and the volume can be very small, the application of the Pogo Pin in a precision connector can reduce the weight of the connector, save the space and beautify the appearance of products (such as ultra-thin mobile phones, smart watches and other products).

To move the needle in the axial direction, the needle is in a clearance fit with the inside wall of the barrel. In order to keep the needle in contact with the needle tube, in the prior art, the tail end of the needle is usually in a bevel structure, when the spring is abutted against the bevel, a component force deviating from the axial direction of the needle exists in the thrust force of the spring on the needle tube, so that when the spring probe works, the needle tube is in contact with the inner wall of the needle tube, and an electric signal is mainly transmitted through the needle tube and the needle tube, so that the stability and low impedance of the spring probe are ensured. The prior art has the defect that when the vibration with larger amplitude is encountered, the needle head and the needle tube are disconnected, so that the signal is interrupted.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model aims to provide a spring probe with stable connection, which solves the problem that the connection between a needle head and a needle tube is unstable under the condition of large vibration. In order to achieve the purpose, the utility model adopts the following technical scheme:

(II) technical scheme

The utility model provides a connect stable spring probe, includes needle axle, spring, needle tubing, the needle tubing forms the blind hole along the axis direction, the spring is located in the needle tubing, the needle axle includes head and afterbody, the needle axle's outside is located to the needle tubing cover, just the afterbody is located inside, the head of blind hole stretches out the blind hole extends to the outside, the needle axle with be equipped with insulating the pad between the spring, needle axle afterbody is equipped with the lug, insulating the pad is equipped with the recess, the lug with the recess phase-match, insulating pad has inlayed a steel ball, part the steel ball sphere surpasss insulating pad exposes externally.

Further, the insulating pad is made of elastic rubber.

Further, the steel ball exceeding part is not larger than the gap between the insulating pad and the needle tube.

Furthermore, the needle shaft, the spring and the needle tube are riveted into a whole.

Further, the contact surface of the insulating pad and the spring is a plane.

Furthermore, the contact surface of the insulating pad and the spring is an inclined surface which inclines towards the position direction of the steel ball

Furthermore, the excircle surface of the needle tube is provided with an interference structure.

(III) advantageous effects

The utility model has the beneficial effects that: through set up the lug on needle axle and insulating pad and be connected with the recess cooperation, it has made insulating pad and needle axle to produce certain skew to inlay the steel ball on the insulating pad, guaranteed that needle axle and needle tubing contact each other all the time, can resist great vibration influence, the steel ball is little with needle tubing inner wall area of contact, can not influence the flexible removal of needle axle, guarantee the normal use of probe, insulating pad keeps apart needle axle and spring simultaneously, avoided the electric current to conduct from the spring, guarantee that the spring can not burnt by the electric current.

Drawings

The utility model will be further described with reference to the following examples with reference to the accompanying drawings.

FIG. 1 is a schematic structural view of an embodiment;

FIG. 2 is a schematic structural diagram of the second embodiment.

The reference numbers illustrate: 1. a needle shaft; 11. a head portion; 12. a tail portion; 121. a bump; 2. a needle tube; 21. an interference structure; 22. blind holes; 3. a spring; 4. an insulating pad; 41. a groove; 5. and (5) steel balls.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The utility model is further described with reference to the following detailed description and accompanying drawings.

In a first embodiment, please refer to fig. 1, a spring probe with stable connection includes a needle shaft 1, a spring 3, and a needle tube 2, wherein the needle shaft 1, the spring 3, and the needle tube 2 are riveted and pressed by a riveting press machine to form the probe. Needle tubing 2 forms blind hole 22 along the axis direction, spring 3 is located in the blind hole 22, needle shaft 1 includes head 11 and afterbody 12, needle shaft 1's outside is located to 2 covers of needle tubing, and inside the afterbody 12 of needle shaft 1 was located blind hole 22, head 11 stretches out blind hole 22 outside, needle shaft 1 with be equipped with insulating pad 4 between the spring 3, insulating pad 4 is the elastic rubber material. The needle shaft 1 is isolated from the spring 3, so that the current is prevented from being conducted from the spring 3, and the spring 3 is prevented from being burnt by the current. An interference structure 21 is arranged on the outer circular surface of the needle tube 2. The contact surface of the insulating pad 4 and the spring 3 is a plane. The tail 12 of the needle shaft 1 is provided with a convex block 121, the insulating pad 4 is provided with a groove 41, the convex block 121 is matched with the groove 41, the insulating pad 4 is embedded with a steel ball 5, and part of the spherical surface of the steel ball 5 exceeds the insulating pad 4 and is exposed outside. The steel ball 5 exceeds the gap between the insulating pad 4 and the needle tube 2. The contact area of the steel ball 5 and the inner wall of the needle tube 2 is small, and the telescopic movement of the needle shaft 1 cannot be influenced. The needle shaft 1 and the insulating pad 4 are connected with the groove 41 in a matched mode through the convex block 121, and the steel balls 5 are embedded in the insulating pad 4 to enable the insulating pad 4 and the needle shaft 1 to generate certain deviation, so that the needle shaft 1 and the needle tube 2 are connected stably and can resist large vibration.

In a second embodiment, please refer to fig. 2, a spring probe with stable connection includes a needle shaft 1, a spring 3, and a needle tube 2, wherein the needle shaft 1, the spring 3, and the needle tube 2 are riveted and pressed by a riveting press machine to form the probe. Needle tubing 2 forms blind hole 22 along the axis direction, spring 3 is located in the blind hole 22, needle shaft 1 includes head 11 and afterbody 12, needle shaft 1's outside is located to 2 covers of needle tubing, and inside the afterbody 12 of needle shaft 1 was located blind hole 22, head 11 stretches out blind hole 22 outside, needle shaft 1 with be equipped with insulating pad 4 between the spring 3, insulating pad 4 is the elastic rubber material. The needle shaft 1 is isolated from the spring 3, so that the current is prevented from being conducted from the spring 3, and the spring 3 is prevented from being burnt by the current. An interference structure 21 is arranged on the outer circular surface of the needle tube 2. The contact surface of the insulating pad 4 and the spring 3 is an inclined plane inclined in the direction of the net steel ball 5. The tail 12 of the needle shaft 1 is provided with a convex block 121, the insulating pad 4 is provided with a groove 41, the convex block 121 is matched with the groove 41, the insulating pad 4 is embedded with a steel ball 5, and part of the spherical surface of the steel ball 5 exceeds the insulating pad 4 and is exposed outside. The steel ball 5 exceeds the gap between the insulating pad 4 and the needle tube 2. The contact area of the steel ball 5 and the inner wall of the needle tube 2 is small, and the telescopic movement of the needle shaft 1 cannot be influenced. The needle shaft 1 and the insulating pad 4 are connected with the groove 41 in a matched mode through the convex block 121, the insulating pad 4 is embedded with the steel ball 5 to enable the insulating pad 4 and the needle shaft 1 to generate certain deviation, and the matching spring 3 pushes the inclined plane to enable the needle shaft 1 to incline, so that the needle shaft 1 and the needle tube 2 are guaranteed to have enough bonding strength. The connection stability of the probe is better and is enough to resist larger vibration.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any minor modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the technical scope of the present invention.

Claims

1. The utility model provides a connect stable spring probe, includes needle axle (1), spring (3), needle tubing (2) form blind hole (22) along the axis direction, spring (3) are located in needle tubing (2), needle axle (1) includes head (11) and afterbody (12), the outside of needle axle (1) is located to needle tubing (2) cover, just afterbody (12) are located inside blind hole (22), head (11) stretch out blind hole (22) extend to the outside, its characterized in that: needle axle (1) with be equipped with insulating pad (4) between spring (3), needle axle (1) afterbody (12) are equipped with lug (121), insulating pad (4) are equipped with recess (41), lug (121) with recess (41) phase-match, insulating pad (4) are inlayed one steel ball (5), and part steel ball (5) sphere surpasss insulating pad (4) are exposed externally.

2. The spring probe of claim 1, wherein: the insulating pad (4) is made of elastic rubber.

3. The spring probe of claim 1, wherein: the steel ball (5) exceeds a part which is not larger than a gap between the insulating pad (4) and the needle tube (2).

4. The spring probe of claim 1, wherein: the needle shaft (1), the spring (3) and the needle tube (2) are riveted into a whole.

5. The spring probe of claim 1, wherein: the contact surface of the insulating pad (4) and the spring (3) is a plane.

6. The spring probe of claim 1, wherein: the contact surface of the insulating pad (4) and the spring (3) is an inclined plane, and the inclined plane inclines towards the position direction of the steel ball (5).

7. The spring probe of claim 1, wherein: and an interference structure (21) is arranged on the outer circular surface of the needle tube (2).