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A central contact piece, a connector and a crimping end structure of the central contact piece of the connector

A technology of central contacts and connectors, applied in the direction of contact parts, two-part connection devices, connections, etc., can solve problems such as radio frequency transmission failure, substrate damage, etc., and achieve the effects of avoiding excessive stress concentration, reducing pressure, and ensuring integrity

Active Publication Date: 2022-03-29
SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The present invention aims to provide a central contact piece, a connector and a crimping end structure of the connector central contact piece, to solve the problems caused by the crimping between the central contact piece of the connector and the base material with low strength and easy creep in the prior art. Excessive pressure at the crimping point can easily lead to damage to the substrate and failure of radio frequency transmission

Method used

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  • A central contact piece, a connector and a crimping end structure of the central contact piece of the connector
  • A central contact piece, a connector and a crimping end structure of the central contact piece of the connector
  • A central contact piece, a connector and a crimping end structure of the central contact piece of the connector

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Effect test

Embodiment 1

[0073] Such as Figure 8-Figure 10 As shown, this embodiment provides a connector, which includes a connector housing 2 on which a central contact 1 is connected.

[0074] The central contact piece 1 is a strip structure, the central contact piece 1 includes a straight section and an arc section, the straight section and the arc section are integrated, and the straight section and the arc section are smooth In transition, the edges of the ends of the arc segments are rounded, and the ends of the straight segments are fixedly connected to the connector housing 2 .

[0075] The arc section of the central contact 1 under pressure can form a surface contact with the substrate, which is used to disperse the pressure at the crimping part with the substrate, reduce the pressure, and protect the substrate.

[0076] The cross-section of the central contact is rectangular, the width H of the rectangle is 0.1mm~1mm, the length L is 0.2mm~5mm, the radius R of the arc segment is 0.5mm~10m...

Embodiment 2

[0083] Such as Figure 16-Figure 17 As shown, this embodiment provides a crimping end structure of a central contact of a connector, including the connector described in Embodiment 1 and a high-frequency printed board 3 .

[0084] The connector includes an installation cavity 5 and a connector housing 2, the installation cavity 5 is provided with a connector insulating medium 6, and the connector housing 2 is connected to the installation cavity by connector mounting screws 7 On the body 5, the central contact piece 1 is connected to the connector housing 2.

[0085] The high-frequency printed board 3 is provided with a stripline or a microstrip line 4 .

[0086] Wherein, the central contact 1 is located directly above the stripline or microstrip 4 , and the central contact 1 can form surface contact with the stripline or microstrip 4 under pressure.

[0087] Such as Figure 18-Figure 20 As shown, in this embodiment, the connector housing 2 is an SMP connector housing;

[...

Embodiment 3

[0091] The difference between this embodiment and embodiment 2 is: as Figure 21-Figure 23 As shown, the connector housing 2 is an SMA type connector housing;

[0092] The width H of the cross section of the central contact 1 is 0.35 mm, the length L is 1.2 mm, the radius R of the arc segment is 1.2 mm, and the radius of the edge rounding is 0.1 mm.

[0093] The material of the central contact piece 1 is beryllium bronze, and the coating is nickel-plated on the bottom layer and gold-plated on the surface layer.

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Abstract

The invention relates to the technical field of electrical connectors, and aims to solve the problem of damage to the base material and radio frequency transmission due to excessive pressure at the crimping point when the central contact of the connector is crimped with a base material with low strength and easy creep in the prior art. In order to solve the problem of failure, a central contact piece, a connector and a crimping end structure of the central contact piece of the connector are provided; wherein, the central contact piece is an elongated structure, and the central contact piece includes a straight section and an arc section. The straight section and the arc section are integrally structured, and the arc section can form surface contact with the base material when the central contact piece is pressed; the beneficial effect of the present invention is that the end of the central contact piece It can always form a surface contact with the stripline or microstrip line. Due to the effect of the arc, the pressure is decomposed and the pressure is reduced, thereby avoiding signal transmission on the high-frequency printed board substrate and the stripline or microstrip line on it. The direction produces a large shear force, ensuring the integrity of the stripline or microstrip line, and ensuring the reliability of radio frequency transmission.

Description

technical field [0001] The invention relates to the technical field of electrical connectors, in particular to a central contact piece, a connector and a crimping end structure of the central contact piece of the connector. Background technique [0002] In the field of electrical connectors, there are various connection methods. In the field of radio frequency connectors, N-type connectors, SMA-type connectors, SMP-type connectors, WMP-type connectors and other connection forms are used to realize coaxial transmission of radio frequency signals. When coaxial transmission is converted to stripline or microstrip transmission line (hereinafter referred to as microstrip line) transmission, the central contact of the coaxial connector and the stripline or microstrip line need to be interconnected. The common interconnection methods are Soldering, resilient contacts (such as gold tape wrap transitions), crimping, etc. [0003] In radio frequency transmission, especially in the f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01R13/02H01R24/40H01R12/55
CPCH01R13/02H01R24/40H01R12/55
Inventor 王天石王宇李鹏张义萍刘镜波李琳羊慧范民许冰张怡许柯李博刘颖杜建春徐利明刘正勇卫杰何国华
Owner SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP
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