CN210779096U

CN210779096U - Large-current electric connector structure

Info

Publication number: CN210779096U
Application number: CN201922237042.8U
Authority: CN
Inventors: 杨彬
Original assignee: Shenzhen Xin Airui Technology Co ltd
Current assignee: Shenzhen Xin Airui Technology Co ltd
Priority date: 2019-12-13
Filing date: 2019-12-13
Publication date: 2020-06-16
Anticipated expiration: 2029-12-13

Abstract

The utility model provides a large-current electric connector structure, which comprises a needle tube, a needle shaft and a spring, wherein the needle shaft is movably sleeved in the needle tube, the bottom end of the needle shaft is abutted against the spring, the bottom end surface of the needle shaft abutted against the spring is an inclined surface, a conductive bead is arranged between the bottom end surface of the needle shaft and the spring, and the conductive bead is in contact with the inner wall of the needle tube under the extrusion of the spring and the bottom end surface of the needle shaft; the surfaces of the needle tube, the needle shaft and the conductive balls are all provided with gold plating layers. The current can be directly conducted to the top end of the needle shaft from the needle tube through one side of the needle shaft, and can also be conducted to the top end of the needle shaft from the needle tube through the conductive beads and the bottom end face of the needle shaft, so that the current passing rate of the connector is improved; because the horizontal extrusion of conductive bead has increaseed the contact dynamics between needle axle and the needle tubing, the conductivity can be more stable.

Description

Large-current electric connector structure

Technical Field

The utility model relates to a connector technical field specifically indicates a heavy current electric connector structure.

Background

In electronic products such as mobile phones, communication, automobiles, and medical devices, connectors for power-on or conduction, such as pogopin and pogo pins, are commonly used; the structure of the probe is generally a spring type probe formed by riveting and pressing three basic components of a needle shaft, a needle tube and a spring together. Because the needle shaft and the needle tube are movably sleeved, and a gap exists between the needle shaft and the needle tube, in the conducting process, current can reach the needle shaft through the spring and can influence the service life of the spring, so that the connector structure cannot be used for conducting high current; in order to improve the current passing rate and prolong the service life of the connector, the bottom surface of the needle shaft is arranged into an inclined surface, the needle shaft is extruded to be in contact with the inner wall of one side of the needle tube through a spring and is directly transmitted to bear most of current through the needle tube and the needle shaft, but the current passing rate cannot be further improved due to the limitation of the contact area of the needle tube and the needle shaft of the connector.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an easily lock box structure of installation.

In order to achieve the above object, the utility model adopts the following technical scheme:

a high-current electric connector structure comprises a needle tube, a needle shaft and a spring, wherein the needle shaft is movably sleeved in the needle tube, the bottom end of the needle shaft is abutted against the spring, the bottom end face of the needle shaft abutted against the spring is an inclined plane, a conductive bead is further arranged between the bottom end face of the needle shaft and the spring, and the conductive bead is in contact with the inner wall of the needle tube under the extrusion of the spring and the bottom end face of the needle shaft; the surfaces of the needle tube, the needle shaft and the conductive balls are all provided with gold plating layers.

In one embodiment, the needle tube is a hollow tube with a bottom end surface, and the top end of the needle tube is movably sleeved with the outer wall of the needle shaft in a riveting manner; the needle tube has a first through hole in a bottom end surface thereof, and the needle shaft has an L-shaped second through hole from the bottom end surface to a side wall thereof.

Furthermore, the top surface of the needle shaft is a flat head provided with a cross groove.

In one embodiment, the needle tube is a hollow tube, the top end of the needle tube is provided with a limiting step for limiting the needle shaft, the bottom end inside the needle tube is riveted with a conductive tail plug, and the surface of the tail plug is provided with a gold-plated layer.

Furthermore, the top end of the needle shaft is in a small round hemisphere shape.

The beneficial effects are that: the conductive balls are in contact with the inner wall of the needle tube under the extrusion of the spring and the bottom end face of the needle shaft, and the surfaces of the needle tube, the needle shaft and the conductive balls are all provided with gold-plated layers, so that current can be directly conducted to the top end of the needle shaft from the needle tube through one side of the needle shaft, and can also be conducted to the top end of the needle shaft from the needle tube through the conductive balls and the bottom end face of the needle shaft, and the current passing rate of the connector is improved; because the horizontal extrusion of conductive bead has increaseed the contact dynamics between needle axle and the needle tubing, the conductivity can be more stable.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic diagram of a first embodiment of a connector;

fig. 2 is a schematic diagram of a second embodiment of the connector.

Wherein, 1, a needle tube; 11. a first through hole; 2. a needle shaft; 21. a second through hole; 22. a bevel; 3. a spring; 4. conductive beads; 5. and (4) a tail plug.

Detailed Description

The invention is further explained below with reference to the drawings:

referring to fig. 1 and 2, a high current electrical connector structure includes a needle tube 1, a needle shaft 2 and a spring 3, wherein the needle shaft 2 is movably sleeved in the needle tube 1, and the bottom end of the needle shaft 2 abuts against the spring 3, the bottom end surface of the needle shaft 2 abutting against the spring 3 is an inclined surface 22, a conductive bead 4 is further disposed between the bottom end surface of the needle shaft 2 and the spring 3, and the conductive bead 4 is in contact with the inner wall of the needle tube 1 under the extrusion of the spring 3 and the bottom end surface of the needle shaft 2; the surfaces of the needle tube 1, the needle shaft 2 and the conductive beads 4 are all provided with gold plating layers.

The conductive beads 4 are in contact with the inner wall of the needle tube 1 under the extrusion of the spring 3 and the bottom end face of the needle shaft 2, and the surfaces of the needle tube 1, the needle shaft 2 and the conductive beads 4 are all provided with gold-plated layers, but the spring 3 is not provided with a plated layer, so that current can be directly conducted to the top end of the needle shaft 2 from the needle tube 1 through one side of the needle shaft 2, and can also be conducted to the top end of the needle shaft 2 from the needle tube 1 through the conductive beads 4 and the bottom end face of the needle shaft 2, and the current passing rate of the connector is improved; because the conductive bead 4 can roll, the conductive bead 4 can not block the flexible movement of the needle shaft 2, and simultaneously, because the conductive bead 4 transversely extrudes, the contact force between the needle shaft 2 and the needle tube 1 is increased, and the conduction performance is more stable.

In one embodiment of the structure of the high-current electric connector, the needle tube 1 is a hollow tube with a bottom end surface, the top end of the needle tube 1 is movably sleeved with the outer wall of the needle shaft 2 in a riveting manner, namely, the outer wall of the needle shaft 2 is provided with a step part, the annular edge of the top surface of the needle tube 1 is riveted and pressed by a precision riveting and pressing device and then shrinks towards the inner side, and a movable clamping structure which is mutually limited is formed with the step part of the needle shaft 2; the needle tube 1 has a first through hole 11 at its bottom end face, and the needle shaft 2 has an L-shaped second through hole 21 from the bottom end face of the needle shaft 2 to the side wall. When the needle tube 1 is long, the internal air pressure resistance is large, the first through hole 11 and the second through hole 21 enable the needle shaft 2 to keep balance of the internal air pressure and the external air pressure of the needle tube 1 in the stretching process, the pressing resistance is reduced, and the connector can stretch more smoothly.

Further, the top surface of the needle shaft 2 is a flat head provided with a cross groove. The flat head increases the contact area of the top surface of the needle shaft 2, and after the cross groove is arranged, the gripping force of the top surface of the needle shaft 2 can be enhanced, so that the conduction performance is more stable.

In one embodiment of the high-current electric connector structure, the needle tube 1 is a hollow tube, the outer wall of the needle shaft 2 is provided with a step part, the top end of the needle tube 1 is provided with a limiting step for limiting the needle shaft 2, the bottom end inside the needle tube 1 is riveted with a conductive tail plug 5, namely, the annular edge at the bottom end of the needle tube 1 is riveted by riveting equipment and then shrinks towards the side to limit the bottom end of the tail plug 5, and the surface of the tail plug 5 is provided with a gold-plated layer. Because the limiting step at the top end of the needle tube 1 is integrally formed by punching, the strength is higher, the bearable impact force is larger, the service life is longer, and the limiting step is suitable for being matched with the spring 3 with short stroke and larger elasticity. Further, the top end of the needle shaft 2 is in a small round hemisphere shape. The small hemispherical needle shaft 2 is suitable for large extrusion force, and can still keep good contact even if the needle shaft 2 inclines.

The above description is not intended to limit the technical scope of the present invention, and any modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are all within the scope of the technical solution of the present invention.

Claims

1. A high current electrical connector structure, characterized by: the needle comprises a needle tube, a needle shaft and a spring, wherein the needle shaft is movably sleeved in the needle tube, the bottom end of the needle shaft is abutted against the spring, the bottom end surface of the needle shaft abutted against the spring is an inclined surface, a conductive bead is arranged between the bottom end surface of the needle shaft and the spring, and the conductive bead is in contact with the inner wall of the needle tube under the extrusion of the spring and the bottom end surface of the needle shaft; the surfaces of the needle tube, the needle shaft and the conductive balls are all provided with gold plating layers.

2. A high current electrical connector structure as claimed in claim 1, wherein: the needle tube is a hollow tube with a bottom end surface, and the top end of the needle tube is movably sleeved with the outer wall of the needle shaft in a riveting manner; the needle tube has a first through hole in a bottom end surface thereof, and the needle shaft has an L-shaped second through hole from the bottom end surface to a side wall thereof.

3. A high current electrical connector structure as claimed in claim 2, wherein: the top surface of the needle shaft is a flat head provided with a cross groove.

4. A high current electrical connector structure as claimed in claim 1, wherein: the needle tube is a hollow tube, the top end of the needle tube is provided with a limiting step for limiting the needle shaft, the bottom end inside the needle tube is riveted with a conductive tail plug, and the surface of the tail plug is provided with a gold-plated layer.

5. A high current electrical connector structure according to claim 4, wherein: the top end of the needle shaft is in a small round hemisphere shape.