CN102544895B

CN102544895B - Small-sized anti-pull electric connector

Info

Publication number: CN102544895B
Application number: CN201210035122.5A
Authority: CN
Inventors: 彭博
Original assignee: China Aviation Optical Electrical Technology Co Ltd
Current assignee: China Aviation Optical Electrical Technology Co Ltd
Priority date: 2012-02-16
Filing date: 2012-02-16
Publication date: 2014-10-22
Anticipated expiration: 2032-02-16
Also published as: CN102544895A

Abstract

The invention relates to a small tensile electric connector, which comprises a cylindrical metal shell and a tail cable arranged at the tail end of the metal shell. The part of the tail cable located in the metal shell is sleeved with a C-shaped A fixed sleeve, the fixed sleeve is tightened on the outer skin of the tail cable so as to cooperate with the tail cable to prevent movement in the axial direction, and the tail end of the metal shell is provided with an inversion edge that is matched with the rear end of the fixed sleeve; When the tail cable is under tension, the tail cable can be prevented from being pulled out or disconnected from the corresponding contact piece through the blocking cooperation between the fixing sleeve and the metal shell, and the fixing sleeve is fixed on the outer skin of the tail cable, thus preventing The holding force of the tail cable that is not pulled relative to the metal shell finally acts between the outer skin of the tail cable and the metal shell, thereby avoiding the occurrence of the electric connector being pulled and damaged, and solving the problem of the existing round small The problem of poor tensile performance of electrical connectors.

Description

A kind of small-sized anti-pull electric connector

Technical field

The present invention relates to electric connector field, especially a kind of small-sized anti-pull electric connector.

Background technology

The small-sized electrical connector of visible a kind of circle on market, this connector comprises columnar metal shell, by insulator, is located at the contact in described metal shell and is located at the stern fast of described metal shell rear end, it requires external diameter to be less than 7 ㎜, length is less than 16 ㎜ (not comprising stern fast length), the inner space of product is limited, therefore traditional tension, antitorque structure and shielding construction all cannot be used, and visible above-mentioned connector is mostly limited without tension, antitorque and function of shielding or tension, torsional property in the market.But in use, the stern fast of connector is often understood under tension, torsion and wide-angle bending is occurred and very easily therefore lost efficacy, and in addition, unshielded function also makes the scope of application of above-mentioned connector be greatly limited.

Summary of the invention

The object of the present invention is to provide a kind of small-sized anti-pull electric connector, to solve the poor problem of tensile property of the small-sized electrical connector of existing circle.

In order to address the above problem, the following technical scheme of small-sized anti-pull electric connector of the present invention: a kind of small-sized anti-pull electric connector, comprise columnar metal shell and stretch into the stern fast in metal shell from described metal shell tail end, described stern fast is positioned at the fixed cover that is arranged with C shape in the part of metal shell, thereby described fixed cover is tightened on the crust of stern fast and is coordinated with stern fast Anti-moving vertically, the tail end place of metal shell be provided with coordinate with the rear end block of fixed cover in turn edge.

Between described fixed cover and metal shell, by being located at the only radial facing of the two cooperation place, only screwing and close.

The shielding conductor front end of described stern fast is pressed between the housing and the crust of stern fast being set on stern fast after routing up the crust of stern fast, the cross section of described housing is c-shaped and be positioned at fixed cover the place ahead, the rear end of housing coordinates with the step surface block of being located on metal shell internal face, the anterior top interference fit of the front end of housing and metal shell, the end of the part of routing up of shielding conductor is pressed between described step surface and the rear end face of housing.

Described step surface is inclined-plane, and the rear end face of described housing is the inclined-plane with the shape complementarity of described step surface.

Between described housing and housing, only screw and close.

The front portion of described metal shell has the gear edge that inside turnover forms, the front end of described housing by be located at itself and described gear along between elastic device and the anterior top interference fit of metal shell.

Described elastic device is flexible rubber ring.

Because small-sized anti-pull electric connector of the present invention is arranged with described fixed cover on its stern fast, in described in the tail end place of its metal shell is provided with, turn edge, described fixed cover is pressed on the crust of stern fast and coordinates with stern fast Anti-moving vertically, the rear end of fixed cover with described in the block that turns edge coordinate, therefore, when stern fast under tension, can coordinate to prevent that stern fast is drawn out or disconnect with corresponding contact by fixed cover and the block of metal shell, and fixed cover is to be fixed on the crust of stern fast, therefore prevent that the confining force that stern fast is not pulled with respect to metal shell from finally acting between the crust and metal shell of stern fast, thereby avoided electric connector to be drawn the generation of bad situation, solved the poor problem of tensile property of the small-sized electrical connector of existing circle.

Accompanying drawing explanation

Fig. 1 is the structural representation of the embodiment 1 of small-sized anti-pull electric connector of the present invention;

Fig. 2 is the structural representation of the fixed cover in Fig. 1;

Fig. 3 is the structural representation of the housing in Fig. 1.

Embodiment

The embodiment 1 of small-sized anti-pull electric connector of the present invention, as Figure 1-3, has whole cylindrical circular metal shell 1, and metal shell 1 can play certain shielding action, on metal shell 1, Anti-slip cover is provided with coupling nut 2 vertically, and coupling nut 2 is rotatably assorted with metal shell 1, is provided with contact module in metal shell 1, and contact module consists of insulator 3 and the contact 4 that is assemblied on insulator 3, the tail end place of metal shell 1 is provided with stern fast, stern fast is by wire 5, shielding conductor 6 and crust 7 form, the wire 5 of stern fast connects with corresponding contact, its front end stretches in metal shell 1, stern fast is positioned in the part of metal shell 1 and is arranged with fixed cover 8, fixed cover 8 adopts the metallic sheath of C shape, after fixed cover 8 is retracted, be pressed on the crust 7 of stern fast and make stern fast form herein hourglass shape, 1-1 coordinating with the rear end block of fixed cover 8 by turning edge in it turns edge in the tail end place of metal shell 1 is provided with, thereby limit stern fast and be positioned at the part of metal shell in the scope of activities of metal shell, avoid stern fast to be drawn bad, between metal shell 1 and fixed cover 8, by being located at the only radial facing of the two cooperation place, only screwing and close, it is interior rear by extrusion metal housing 1 and fixed cover 8 form simultaneously that described only radial facing is assemblied in metal shell 1 at fixed cover 8, thereby guarantee the adaptation of the two, the front end of the shielding conductor 6 of stern fast is pressed on stern fast by the housing 9 being sheathed on stern fast after outwards turning down 360 °, housing 9 adopts the c-shaped metallic sheath of cross section, thereafter end face is inclined-plane, the internal face of metal shell 1 is provided with step surface, this step surface be inclined-plane and with the shape complementarity of the rear end face of housing 9, the end of the part of the turnover of shielding conductor 6, the front end before turnover is pressed between the rear end face of housing 9 and the step surface of metal shell 1, thereby on the one hand the shielding conductor of stern fast 6 and metal shell 1 are electrically conducted, realized the comprehensive shielding of connector, also can when fixed cover 8 damages, replace fixed cover 8 on the other hand and play drawing-resistant function, specifically, because housing 9 is pressed on the shielding conductor 6 of stern fast and the front end of shielding conductor 6 is pressed between its rear end and metal shell 1, when pulling stern fast, corresponding power can be put between the shielding conductor and metal shell of stern fast, thereby effectively prevented that connector from being drawn the generation of bad problem, between housing 9 and metal shell 1, by being located at the only radial facing of the cooperation place of the two, only screwing and close, only radial facing also can be by extrusion metal housing 1 and housing 9 form simultaneously, between the rear end of the front end of housing 9 and contact module, be provided with elastic device, in the present embodiment, elastic device adopts flexible rubber ring 10, the front end of metal shell 1 is provided with the gear that is inverted to form along 1-2, this gear compresses backward vertically contact module and makes elastic device have a default decrement along 1-2, thereby can keep housing 9 to compress constantly shielding conductor 6, guarantee the reliability of the shielding properties of connector.

In other embodiment of small-sized anti-pull electric connector of the present invention, elastic device described in the embodiment 1 of above-mentioned small-sized anti-pull electric connector can also be dish spring or ripple spring etc., housing and rear end face and the step surface of metal shell can also be the mutual identical plane of other shape.

Claims

1. A small tensile electrical connector, comprising a cylindrical metal shell and a tail cable extending into the metal shell from the tail end of the metal shell, characterized in that the tail cable is located in the metal shell Part of the upper part is provided with a C-shaped fixed sleeve, which is shrunk and tightened on the outer skin of the tail cable so as to cooperate with the tail cable in the axial direction to prevent movement. The tail end of the metal shell is provided with a fixed sleeve The rear end stop fits the inversion edge.

2 . The small tensile electrical connector according to claim 1 , characterized in that, the fixed sleeve and the metal shell are engaged in anti-rotation through an anti-rotation surface provided at the joint of the two. 3 .

3. The small tensile electrical connector according to claim 1, characterized in that, the front end of the shielded wire of the tail cable is pulled out of the sheath of the tail cable and pressed tightly on the shielding sleeve and the tail of the tail cable. Between the outer skins of the cables, the cross-section of the shielding sleeve is C-shaped and is located in front of the fixed sleeve. The rear end of the shielding sleeve is matched with the step surface on the inner wall of the metal shell, and the front end of the shielding sleeve is in contact with the metal shell. The front part is press-fitted, and the end of the turned-out part of the shielded wire is pressed tightly between the stepped surface and the rear end surface of the shielding sleeve.

4. The small tensile electrical connector according to claim 3, wherein the stepped surface is an inclined surface, and the rear end surface of the shielding sleeve is an inclined surface complementary in shape to the stepped surface.

5 . The small tensile electrical connector according to claim 3 , wherein the shielding sleeve and the housing are in anti-rotation fit. 6 .

6. The small tensile electrical connector according to claim 3, characterized in that, the front part of the metal shell has an inwardly folded baffle, and the front end of the shielding sleeve is connected to the front end of the shielding sleeve The elastic device between the baffles is press-fitted with the front part of the metal shell.

7. The small tensile electrical connector according to claim 6, wherein the elastic device is an elastic rubber ring.