CN201303093Y

CN201303093Y - Electric contact device applied on coaxial connector

Info

Publication number: CN201303093Y
Application number: CNU2008200967344U
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: 2009-09-02
Anticipated expiration: 2018-10-30

Abstract

Disclosed is an electric contact device which is applied on a coaxial connector and consists of a connector plug or socket external conductor and an elastic contact ring. The elastic contact ring is a conical ring; a circumferential positioning groove is arranged at the abutting joint of the wall of an inner hole of the plug or socket external conductor; and the big end of the elastic contact ring is disposed in the positioning groove. The electric contact device is capable of automatically adjusting the deformation and compression amount of the elastic contact ring according to the axial abutting position of the connector plug and the socket to offset the axial abutting tolerance of the plug and the socket so as to ensure the electric contact performance of the connector. The electric contact device satisfies the requirements of axial floating and compensation of the connector, and has the advantages of simple and reliable structure, less molding processes and low cost, and is easy to assemble.

Description

A kind of Electical connector that is applied to coaxial connector

Technical field

The utility model relates to a kind of Electical connector, is mainly used in the linkage interface of radio frequency (RF) coaxial connector, especially pulls out fast lock and has 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 that electrical communication is to guarantee radio frequency transmission performance, QMA series of for example present widely used SMA series, N series, 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 by screw thread (as SMA series, N series, 7/16 series) or other retaining mechanisms (as QMA series).Because the interface of plug, socket requires to fit tightly, and is certain so this class adopts the axial docking location of the connector of this connected mode, can't satisfy the requirement of axial float and compensation.For satisfying the plug together tolerance of the requirement of 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 the contacts side surfaces function comprises BNC series, QNC series, SHV series 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.

The utility model content

The purpose of this utility model 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 described in the utility model, constitute by connector plug or socket outer conductor and Elastic Contact ring, described Elastic Contact ring is the conical ring structure, described 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 described taper Elastic Contact ring compressed.Described 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 inwardly the Elastic Contact ring of contraction distortion will further press the outer conductor of plug and socket, and it is reliable to make it contact.Because contact ring is relative less with two outer conductor contacts area, 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 be adjusted its distortion decrement automatically 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 utlity model has following outstanding advantage:

(1) the utility model Elastic Contact ring, 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 in the utility model 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 in the utility model, 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 schematic diagram in the utility model preferred embodiment;

Fig. 2 is that the Elastic Contact ring in the utility model preferred embodiment is assembled into the two-dimensional structure schematic diagram in the outer conductor location notch;

Fig. 3 is that the Elastic Contact ring in the utility model preferred embodiment is assembled into the three-dimensional structure schematic diagram in the outer conductor location notch;

Fig. 4 is the structural representation after plug, the socket butt joint of the utility model preferred embodiment 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 utility model preferred embodiment, it is a conical ring by elastic metallic band punch forming, 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, further butt joint is with elasticity of compression contact ring 10, 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, above-mentioned these a series of distortion of Elastic Contact ring 10 will further be pressed the outer conductor 20 of plug and the outer conductor 30 of socket 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 is relative with 30 contacts area with two outer conductors 20 less, 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 be adjusted its distortion decrement automatically 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, a kind of Electical connector that is applied to coaxial connector, constitute by connector plug or socket outer conductor and Elastic Contact ring, it is characterized in that: described Elastic Contact ring (10) is the conical ring structure, (20) inner hole wall joint is provided with circumferential registration groove (201) in described plug or the socket outer conductor, and the big end of Elastic Contact ring (101) is packed in this location notch (201) inwardly.

2, the Electical connector that is applied to coaxial connector according to claim 1 is characterized in that: big end (101) diameter and plug or socket outer conductor butt hole size were unsuitable when described taper Elastic Contact ring compressed.

3, the Electical connector that is applied to coaxial connector according to claim 1 and 2 is characterized in that: described Elastic Contact ring (10) adopts the elastic metallic material punching out to form.