CN101404364B

CN101404364B - Electric contact apparatus used for coaxial connector

Info

Publication number: CN101404364B
Application number: CN200810068966A
Authority: CN
Inventors: 肖顺群
Original assignee: Guizhou Space Appliance Co Ltd
Current assignee: Guizhou Space Appliance Co Ltd
Priority date: 2008-10-30
Filing date: 2008-10-30
Publication date: 2012-10-10
Anticipated expiration: 2028-10-30
Also published as: CN101404364A

Abstract

An electrical contact device applied to a coaxial connector is composed of a plug or a socket outer conductor of the connector and an elastic contact ring which has conical ring structure. The joint of the inner hole wall of the plug or the socket outer conductor is provided with a circumference locating slot, and the big end of the elastic contact ring is inwards arranged in the locating slot. When not compressed, the diameter of the big end of the conical elastic contact ring is equivalent to the size of the inner diameter of the inner butting hole of the plug or the socket outer conductor. The electrical contact device can automatically regulate the deformation compressibility of the elastic contact ring according to the axial abutting joint position of the plug or the socket of the connector, so as to achieve the aim of making up the axial abutting joint tolerance of the plug or the socket, thus ensuring the electrical contact performance of the connector and meeting the requirements of axial float and compensation of the connector; the electrical contact device also has the advantages of simple and reliable structure, less molding working procedures of the technique, easy assembly and low cost.

Description

A kind of Electical connector that is applied to coaxial connector

Technical field

The present invention relates to a kind of Electical connector, be mainly used in the linkage interface of radio frequency (RF) coaxial connector, especially pull out fast lock and have in the linkage interface of radio frequency (RF) coaxial connector of higher intermodulation index request at straight cutting.

Background technology

Plug is the requirement the most basic to connector with reliable contact of socket when plugging together.In radio frequency (RF) coaxial connector, generally adopt the coincidence at plug, the electric interface of socket to realize electrical communication guaranteeing the radio frequency transmission performance, for example present widely used SMA series, N are serial, the QMA series of 7/16 series and new development or the like.The characteristics of this electric connecting mode are butt joint interface is applied and to keep certain thrust that plug, socket butt joint interface are fitted tightly to guarantee electric transmission performance through screw thread (like SMA series, serial, 7/16 series of N) or other retaining mechanisms (like QMA series).Because the interface of plug, socket requires to fit tightly, and is certain so this type adopts the axial docking location of the connector of this connected mode, can't satisfy the requirement of axial float and compensation.Require the tolerance that plugs together for satisfying butt joint relatively flexibly with compensating axial; Also exploitation has coaxial connector with contacts side surfaces function and the coaxial connector that has the nose balance ring at present; The coaxial connector that wherein has a contacts side surfaces function comprises BNC series, QNC is serial, SHV is serial and SMP series etc., and the coaxial connector that has the nose balance ring has BMA series and QN series etc.The above-mentioned coaxial connector rubber-like linkage interface that the contacts side surfaces function is arranged or have the nose balance ring allows the docking location of plug and socket that certain scope of activities is arranged, with the axial tolerance of compensation butt joint or retaining mechanism.But this product at aspects such as cost, Performance And Reliabilities still more or less have a defective, especially in the higher application scenario of intermodulation performance index request, owing to its inherent shortcoming is difficult to meet the demands.

Summary of the invention

The object of the invention provides a kind of Electical connector that is applied to coaxial connector, to be used for the radio frequency (RF) coaxial connector that straight cutting pulls out fast lock and has higher intermodulation index request.

The Electical connector that is applied to coaxial connector according to the invention; Constitute by connector plug or socket outer conductor and Elastic Contact ring; Said Elastic Contact ring is the conical ring structure; Said plug or socket outer conductor butt joint hole wall joint are provided with circumferential location notch, and the big end of Elastic Contact ring is packed in this location notch inwardly.

Outside diameter and plug or socket outer conductor butt hole internal diameter size were unsuitable when said taper Elastic Contact ring compressed.Said Elastic Contact ring adopts the elastic metallic material punching out to form.

Plug, socket are in docking operation; With axial compression Elastic Contact ring; The contact ring small end of conical ring structure will inwardly shrink under the effect of this axial compressive force, and the Elastic Contact ring of inside contraction distortion will further press the outer conductor of plug and socket, and it is reliable to make it contact.Because contact ring and two outer conductor contacts area are less relatively, so even the suffered axial force of contact ring is less also can be produced bigger pressure and guarantee reliable electric contact, to reach the requirement of technical indicators such as high intermodulation performance.On the other hand, this Elastic Contact ring can adjust automatically its distortion decrement according to plug, the axial docking location of socket and remedy the purpose that plugs and sockets axially docks tolerance to reach, to guarantee the connector electrical contact performance.

In sum, the present invention has following outstanding advantage:

(1) Elastic Contact ring of the present invention, can guarantee less indexs such as reflection and high intermodulation performance to be hanged down in realization under the relay with the contact of lower axial compressive force realization higher pressure because of adopting conical ring structure and unique mounting means thereof;

(2) the Elastic Contact ring among the present invention is installed in the outer conductor location notch, can make it to realize and the interference fit of location notch that with plastic deformation assembling is not deviate from during the location, and guarantee that the plugs and sockets outer conductor reliably contacts.

(3) the elasticity contact ring adopts the conical ring structure among the present invention, is formed by the elastic metallic material punching out, simple and reliable for structure, the technological forming work step is few, assembling easily, cost is low.

Description of drawings

Fig. 1 is the Elastic Contact ring structure sketch map in the preferred embodiment of the present invention;

Fig. 2 is that the Elastic Contact ring in the preferred embodiment of the present invention is assembled into the two-dimensional structure sketch map in the outer conductor location notch;

Fig. 3 is that the Elastic Contact ring in the preferred embodiment of the present invention is assembled into the three-dimensional structure sketch map in the outer conductor location notch;

Fig. 4 is the structural representation after plug, the socket butt joint of the preferred embodiment of the present invention puts in place.

Among the figure: 10-Elastic Contact ring, the big end of 101-Elastic Contact ring, 102-Elastic Contact ring small end, 20-plug outer conductor, 201-location notch, 2011-mating surface, 2012-contact-making surface, 2013-confined planes, 30-socket outer conductor, 301-socket outer conductor end face.

Concrete real mode

Fig. 1 is the structural representation of the highly reliable Elastic Contact ring 10 of the preferred embodiment of the present invention, and it is a conical ring by elastic metallic band punch forming, and wherein the diameter of the big end 101 of conical ring is greater than the diameter of conical ring small end; Plug outer conductor butt hole end is provided with circumferential registration groove 201; Before the assembling, the diameter of contact ring 10 big ends 101 is suitable with the size of plug outer conductor 20 butt hole internal diameters, during assembling; The big end 101 of contact ring 10 is inwardly packed in the location notch 201 of plug outer conductor 20; Then its small end 102 is applied certain axial compressive force, the Elastic Contact ring 10 of conical ring structure end 101 greatly finally makes its diameter be deformed to φ D from φ A the plasticity expanding distortion.After removing institute's externally applied forces; Because the cause that plastic deformation and strain combine; Contact ring 10 big ends 101 will fit tightly with the mating surface 2011 of the location notch 201 of outer conductor 20; This confined planes 2013 that fits tightly the location notch 201 of power and outer conductor 20 has limited the radial displacement and the axial displacement of contact ring 10 together, and contact ring 10 location are not deviate from.At this moment, the axial length of contact ring 10 is deformed to Y from X, and the diameter of its small end 102 is deformed to φ B from φ a, and the structural representation after assembling puts in place as shown in Figures 2 and 3.

Plug and socket is in docking operation; The outer conductor 20 of the outer conductor 30 relative plugs of socket moves vertically and draws close; Behind the butt joint certain distance; The end face 301 of the outer conductor 30 of socket touches the small end 102 of Elastic Contact ring 10, and further butt joint is elasticity of compression contact ring 10, and the axial dimension Y of Elastic Contact ring 10 will and then further reduce along with the preceding of the end face 301 of socket outer conductor 30; The big end 101 of conical ring structure will expand outwardly trend under the effect of this axial compressive force; The small end 102 of conical ring structure will inwardly shrink under the effect of this axial compressive force, and the outer conductor 20 of plug and the outer conductor 30 of socket will be further pressed in above-mentioned these a series of distortion of Elastic Contact ring 10 along with the carrying out of butt joint, and it is reliable to make it contact.Because Elastic Contact ring 10 adopts the elastic metallic material punch forming; Thereby it and two outer conductors 20 and 30 contacts area are less relatively; Therefore; Even the suffered axial force of contact ring 10 is less also can be produced bigger pressure and guarantees reliable electric the contact on two outer conductors 20 and 30 contact-making

surface

2012 and 301, to reach the requirement of technical indicators such as low standing wave and high intermodulation performance.

On the other hand; Elastic Contact ring 10 can adjust automatically its distortion decrement according to the axial docking location of plug, socket outer conductor 20 and 30 and remedy the axially purposes of butt joint tolerances of plug outer conductor 20 and socket outer conductor 30 to reach; Axial tolerance with butt joint of compensation plug and socket or retaining mechanism guarantees electrical property.

Claims

1. Electical connector that is applied to coaxial connector; Constitute by connector plug or socket outer conductor and Elastic Contact ring; Said Elastic Contact ring (10) is the conical ring structure; Said plug or socket outer conductor (20) inner hole wall joint are provided with circumferential registration groove (201), and the big end of Elastic Contact ring (101) is packed in this location notch (201) inwardly, and it is characterized in that: big end (101) diameter and plug or socket outer conductor butt hole internal diameter size were unsuitable when said taper Elastic Contact ring compressed.