CN213878445U

CN213878445U - Anti-stretching electric connector tail clip

Info

Publication number: CN213878445U
Application number: CN202022786071.2U
Authority: CN
Inventors: 符栋梁; 叶斐; 李佳桐; 冯海军; 胡亚楠
Original assignee: 704th Research Institute of CSIC
Current assignee: 704th Research Institute of CSIC
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2021-08-03
Anticipated expiration: 2030-11-26

Abstract

The utility model relates to an anti-stretching electric connector tail clamp, which comprises a main body, a retractable component and a lock nut, wherein the retractable component is arranged at the rear part of the main body and is connected with the lock nut through threads, an internal thread is arranged in the front half section of the lock nut, the inner section of the rear half section is in a trapezoid shape gradually narrowing inwards, and an annular claw is arranged at the trapezoid matching joint of the retractable component and the lock nut; in use, the cable shield is sandwiched between the retractable member and the lock nut by the lock nut. The utility model discloses the tail that compares the clamp plate form presss from both sides shared space littleer, insert and can be inseparabler arrange between inserting by plane, be of value to the miniaturized design of electronic equipment.

Description

Anti-stretching electric connector tail clip

Technical Field

The utility model relates to an electric connector, especially a small-size electric connector combines stretch-proof tail clamp of engineering application.

Background

The tail clamp is a common clamping structure for connecting and fixing the electric connector and the cable, and has the main function of preventing the core wire of the cable and the welding point of the electric connector from being detached or broken when being subjected to external force, so that the tail clamp is an important ring for ensuring the long-term reliable operation of electric equipment. At present, the tail clip is mostly in a pressing plate form as shown in fig. 1, and is widely used due to simple structure. However, there are some disadvantages:

1. compared with a small-sized electric connector (the outer diameter is usually not more than 10mm), the outer dimension of the pressure plate is much larger, so that the distance between the electric connectors is increased without influencing the installation and maintenance, the arrangement quantity of the electric connectors in the same area is reduced, and the miniaturization development of electronic equipment is hindered;

2. a small section of cable is in an unshielded state at the joint of the tail clamp and the cable, and even if the whole cable is provided with a shielding layer, the existence of the blank section can greatly reduce the anti-interference capability of the whole section of cable, so that the equipment with higher requirement on electromagnetic compatibility is not facilitated;

3. the joint of the pressure plate and the cable cannot be completely attached, dust or liquid can enter the tail clamp along with the gap, and the welding reliability is easily affected after a long time, so that a heat shrink tube needs to be additionally sleeved at the joint for sealing treatment;

4. although the adjustable range of the pressure plate structure is large and the requirement on the outer diameter of the cable is not high, the cable is too thick and is easy to extrude and deform to cause core wire damage, and the pressure plate structure is too thin and cannot provide effective clamping force, so that the anti-stretching capability is poor;

5. the clamp plate tail presss from both sides by 2 screws 11 (including the bullet pad), 1 or 2 clamp plates 10 and main part bush 12 are constituteed, and the part is many, and the assembling process is loaded down with trivial details, has increased technical staff's the construction degree of difficulty at the relatively poor job site of environmental condition.

Disclosure of Invention

The utility model aims to provide a miniaturized stretch-proof electric connector tail presss from both sides for solve small-size electric connector and cable junction problem.

In order to achieve the above purpose, the technical scheme of the utility model is that: an anti-stretching electric connector tail clamp comprises a main body, a retractable component and a lock nut, wherein the retractable component is mounted at the rear part of the main body and is connected with the lock nut through threads, internal threads are arranged in the front half section of the lock nut, the inner section of the rear half section is in a trapezoid shape gradually narrowing inwards, and an annular claw is arranged at the trapezoidal matching connection part of the retractable component and the lock nut; in use, the cable shield is sandwiched between the retractable member and the lock nut by the lock nut.

Further, the retractable member and the annular claw are made of hard rubber materials.

Further, when lock nut and main part were screwed and are connected, outside-in's tightening force was applied to collapsible part, made the annular melon draw in and tightly embraced the cable surface.

Furthermore, the main body is made of 304 stainless steel, and external threads at two ends are respectively connected with the small-sized electric connector and the lock nut.

Further, outer hexagonal structures are arranged on the outer sides of the main body and the locking nut.

The utility model has the advantages that:

1. according to the utility model discloses, the shared space of tail clamp than the clamp plate form is littleer relatively, insert and can be inseparabler arrange between inserting by plane, be of value to the miniaturized design of electronic equipment.

2. According to the utility model discloses, press from both sides the cable shielding layer between tail clamp and cable when the navigation plug welding is assembled, realize that 360 of shielding layer encircle ground connection, all exposed wires are whole to be sealed in the tail clamp, and it is exposed not to have the wire from the outside, has realized the omnidirectional shielding in the real meaning, and the interference killing feature of cable is strongest.

3. According to the utility model discloses, because there is the annular claw between tail clamp and the cable, both can laminate completely and do not have the space, still have certain waterproof dustproof ability when no other safeguard measure.

4. According to the utility model discloses, but the multiple cable external diameter of the annular claw part adaptation that can tighten up makes the even cable of cable surface atress can keep more regular circular non-deformable because of the mode that adopts the annular shrink to compress tightly again.

5. According to the utility model discloses, the tail presss from both sides only 3 parts and constitutes, adopts threaded connection between main part and the lock nut, and convenient to use does not need any instrument just can firmly fix cable and tail clamp.

Drawings

FIG. 1 is a schematic view of a conventional tail clip;

fig. 2 is a schematic view of the anti-stretching tail clip of the electrical connector of the present invention.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings and examples.

As shown in fig. 2, the anti-stretching tail clip of the electrical connector of the present invention comprises a lock nut 1, a retractable member 2 and a main body 3. In consideration of corrosion resistance and hardness, the main body 3 is made of 304 stainless steel, and external threads at two ends are respectively connected with the small-sized electric connector and the lock nut; one end of the retractable component 2 is mounted at the rear part of the main body 1, and rubber is selected to be made into a circle of melon structure, so that the friction force is large, the outer side of the cable can be tightly clamped on the premise of not damaging the cable, and the effect of a sealing ring is achieved; stainless steel is selected for use equally to lock nut 1, first half internal thread is used for the main part to be connected, latter half inwards narrows down gradually, clamp cable shielding layer between collapsible part 2 and lock nut 1 during assembling process, exert clamping force to the cable through the rubber claw of tightening up part 2 when lock nut 1 screw in main part 3, the shielding layer can firmly be attached and prevent electromagnetic interference through the tail and press from both sides rear end slot entering equipment in lock nut inboard simultaneously, outer hexagonal structure has all been designed in main part 3 and the 1 outside of lock nut in addition, easy to assemble and maintenance.

The tail clamp of the utility model has the advantages that the whole design of the tail clamp is similar to that of a cylinder without screws and pressing plates, the outer diameter of the tail clamp can be basically consistent with that of a small-sized electric connector, the space is greatly saved, and the aerial insertion arrangement quantity in the same area can be expected to be 20% more than that of the pressing plate tail clamp; the retractable component is placed in the main body, is similar to an annular claw and is made of hard rubber materials, the retractable range is large so as to adapt to different outer diameters of cables, when the retractable component is completely attached to and covers the outer surface of the cable, the cable cannot be damaged, the sealing effect can be achieved, and dust and liquid are prevented from entering the tail clamp; the section of the rear section of the inner side of the locking nut is designed to be trapezoidal, and when the locking nut is connected with the main body and is slowly screwed, a tightening force from outside to inside is applied, so that the annular melon is folded and tightly embraces the outer surface of the cable. The purpose of the utility model can be achieved.

Claims

1. The utility model provides a prevent drawing electric connector tail and press from both sides, includes main part, collapsible part and lock nut, its characterized in that: the rear part of the main body is provided with a retractable component and is connected with a lock nut through threads, internal threads are arranged in the front half section of the lock nut, the inner section of the rear half section is in a trapezoid shape gradually narrowing inwards, and an annular claw is arranged at the trapezoidal matching connection part of the retractable component and the lock nut; in use, the cable shield is sandwiched between the retractable member and the lock nut by the lock nut.

2. The anti-stretch electrical connector tail clip of claim 1, wherein: the retractable component and the annular claw are made of hard rubber materials.

3. The anti-stretch electrical connector tail clip of claim 1, wherein: when the lock nut is screwed and connected with the main body, the retractable component applies tightening force from outside to inside, so that the annular melon is folded and tightly embraces the outer surface of the cable.

4. The anti-stretch electrical connector tail clip of claim 1, wherein: the main body is made of 304 stainless steel, and external threads at two ends are respectively connected with the small-sized electric connector and the lock nut.

5. The anti-stretch electrical connector tail clip of claim 1, wherein: outer hexagonal structures are arranged on the outer sides of the main body and the locking nut.