CN216251161U - General crimping type ground connection cable of space flight - Google Patents

Abstract

The utility model discloses a general aerospace crimping type grounding cable which comprises a grounding wire, a braided sleeve and crimping terminals, wherein the braided sleeve is wrapped on the grounding wire, the crimping terminals are arranged at two ends of the braided sleeve, a coating is arranged inside the crimping terminal, a plurality of tooth grooves are formed in the coating, the tooth grooves are radially and uniformly arranged on the inner wall of the coating, the tooth grooves incline towards an opening of the crimping terminal and wrap the end part of the braided sleeve, and the braided sleeve is arranged inside the coating through crimping and is clamped with the tooth grooves. The utility model adopts the braided conductor, which has the advantages of flexible connection, and the conductor with the conductive braided sleeve has better probability of fatigue fracture resistance than the common grounding wire, thereby improving the safety; and the terminal is provided with a groove hooked with the braiding sleeve, so that the friction force between the cable and the end head is increased in the crimping process, and the reliability of the cable and the end head after crimping is higher.

Description

General crimping type ground connection cable of space flight

Technical Field

The utility model relates to the technical field of grounding cable connection, in particular to a general aerospace crimping type grounding cable.

Background

Civil high-performance cables for medium military industry such as aviation and aerospace need to be connected in a crimping mode, wherein the working temperature of the cables connected in the crimping mode can reach 170 ℃ at most, and the lowest temperature of the cables connected in the crimping mode can reach 60 ℃ below zero. In order to better adapt to extreme temperature and improve the conductive effect, in the crimping process, the two terminals and the wire core of the wire or the cable need to be evacuated of air as much as possible in the crimping process, so that the cable is in close contact with the terminals.

The main problem of the existing similar products is that although some products adopt a compression joint mode, welding processing is required to be carried out after compression joint due to unstable technology. The soldered cable is limited by the use temperature in the environment, and particularly, when the soldered cable is subjected to high temperature, low temperature or other polluted environments, the soldering joint generates excessive residues, thereby directly influencing the performance of equipment.

In addition, if the crimping is not in place in the crimping process, the phenomena of falling off and the like caused by insufficient under-voltage and insufficient tensile strength can occur; or the wires and cables are damaged due to overvoltage, and the product fracture is influenced. These are the main factors that make the cable earth conductor unstable after the terminal is crimped.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a general compression joint type grounding cable for spaceflight, which aims to solve the technical problems that the cable is unstable after compression joint and has insufficient tensile strength in the prior art.

In order to solve the technical problems, the utility model specifically provides the following technical scheme:

the utility model provides a general aerospace crimping type grounding cable which comprises a grounding wire, a braided sleeve and crimping terminals, wherein the braided sleeve is wrapped on the grounding wire, the crimping terminals are arranged at two ends of the braided sleeve, a coating is arranged inside the crimping terminal, a plurality of tooth grooves are formed in the coating, the tooth grooves are uniformly arranged on the inner wall of the coating in the radial direction, the tooth grooves incline towards the opening of the crimping terminal and wrap the end part of the braided sleeve, and the braided sleeve is arranged inside the coating through crimping and is clamped with the tooth grooves.

As a preferable aspect of the present invention, the crimp terminal includes a cylindrical port and a tip provided at an end of the cylindrical port, the plating layer is provided inside the cylindrical port, the tip is provided with a tip hole, and a tip of the tooth groove is inclined toward the tip.

In a preferred embodiment of the present invention, the tip of the tooth socket is bent toward the tip and forms an arc-shaped hook structure.

As a preferable scheme of the present invention, the end head is provided with a word mark.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model adopts the braided conductor, compared with the same area of the grounding lead, the utility model has the advantages of flexible connection, better probability of fatigue fracture resistance of the conductor with the conductive braided sleeve than the common grounding lead and improved safety; the terminal is provided with the groove hooked with the woven sleeve, so that the friction force between the cable and the end head is increased in the crimping process, the reliability of the cable and the end head is higher after the cable and the end head are crimped, the product quality and the electric conductivity are greatly improved, and the environmental pollution and the generation of redundant materials caused by welding are reduced; for a user, the finished cable is directly installed on equipment, labor is saved, and meanwhile work efficiency is greatly improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

Fig. 1 is a schematic structural diagram of an aerospace general purpose crimp-type ground cable according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a tooth slot according to an embodiment of the present invention.

The reference numerals in the drawings denote the following, respectively:

1-a ground conductor; 2-weaving a sleeve; 3-a crimp terminal; 4-plating; 5-gullet; 6-word mark;

301-cylindrical port; 302-a tip; 303-end holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 and 2, the utility model provides a general compression joint type grounding cable for aerospace, which comprises a grounding conductor 1, a braided sleeve 2 wrapped on the grounding conductor 1 and compression joint terminals 3 arranged at two ends of the braided sleeve 2, wherein the braided sleeve 2 has a conductive function, a plating layer 4 is arranged inside the compression joint terminal 3, a plurality of tooth sockets 5 are arranged on the plating layer 4, the tooth sockets 5 are radially and uniformly arranged on the inner wall of the plating layer 4, the tooth sockets 5 are inclined towards the opening of the compression joint terminal 3 and wrap the end part of the braided sleeve 2, and the braided sleeve 2 is arranged inside the plating layer 4 by compression joint and is clamped with the tooth sockets 5.

The end parts of the grounding conductor 1 and the braided sleeve 2 wrapped outside the grounding conductor 1 are installed in the crimping terminal 3 through crimping, the grounding conductor 1 has a supporting effect on the braided sleeve 2, and the crimping effect is prevented from being influenced by the over-softness of the braided sleeve 2. The ground wire is divided into a sheet terminal ground wire and a tubular terminal ground wire according to the terminal form of the crimping, and the sheet terminal ground wire is mainly used in this embodiment, but the tubular terminal ground wire is also applicable to the crimping method of the crimping terminal 3.

The grounding wire adopts the braided sleeve 2 and the grounding wire 1 arranged in the braided sleeve 2 as conductors, the grounding wire has the advantages of flexible connection, compared with the same grounding wire area, the installation and use of the conductor with the braided sleeve 2 have the advantage of being not limited by the field, the probability of fatigue fracture resistance of the conductor with the conductive braided sleeve is better than that of a common grounding wire, and the safety is improved.

The earth connection adopts moulding pressure and terminal crimping, and inside is provided with the recess, weaves cover 2 and radially penetrates from one side of crimping terminal 3, does not contact with the recess at the in-process that penetrates, when penetrating the completion back, weaves the outside hook of cover 2 and establishes on the recess, increases the frictional force of cable and end at the crimping in-process, prevents that the cable from droing, makes the cable higher with end crimping back reliability.

In this embodiment, the crimp terminal 3 includes a cylindrical port 301 and a tip 302 disposed at an end of the cylindrical port 301, the plating layer 4 is disposed inside the cylindrical port 301, the tip 302 is provided with a tip hole 303, and a tip of the spline 5 is inclined toward the tip 302.

The crimp terminal 3 of this form is a commercially available terminal.

Preferably, in order to prevent the cable from being caught by the splines 5 during crimping, which would result in failure to crimp, the tips of the splines 5 are bent toward the tip 302 and form an arc-shaped hook structure. When the braided sheath 2 on the ground lead 1 enters the columnar port 301, the braided sheath 2 is contacted with the arc-shaped part of the arc-shaped hook structure and slides in the process of penetrating, and when the braided sheath 2 is going to penetrate out reversely, the hook part on the arc-shaped hook structure is hooked on the braided sheath 2 to prevent the braided sheath 2 from penetrating out.

Preferably, the end head 302 is provided with a character mark 6, the end head is provided with the character mark, a special tool jaw die used for crimping is provided with the character mark, and the character mark of the terminal corresponds to the die character mark after crimping to avoid using wrong tools by an operator.

According to the aerospace general compression joint type grounding cable, terminals of various types of grounding cables are matched with cable compression molds in accordance with the specification, so that the specified tensile strength is achieved, and a complete grounding cable is formed; the terminal is provided with the groove hooked with the woven sleeve, so that the finished grounding cable can be directly installed on electrical equipment without soldering, and is convenient to disassemble and assemble, efficient and labor-saving; the product has long service life and high reliability, and is suitable for installation of high-requirement aerospace and aviation equipment; the special compression joint technology improves the product quality and reliability.

The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present application and such modifications and equivalents should also be considered to be within the scope of the present application.

Claims (4)

1. The utility model provides a general crimping type ground connection cable of space flight, its characterized in that is established including earth conductor (1), package braided cover (2) and setting on earth conductor (1) are in braided cover (2) crimping terminal (3) at both ends, crimping terminal (3) inside is provided with cladding (4), be provided with many tooth's socket (5) on cladding (4), tooth's socket (5) radial align to grid sets up on the inner wall of cladding (4), tooth's socket (5) to the opening part slope of crimping terminal (3) is wrapped up the tip of braided cover (2), braided cover (2) are in through the crimping setting cladding (4) inside and with tooth's socket (5) joint.

2. An aerospace general purpose crimp type ground cable according to claim 1, wherein the crimp terminal (3) comprises a cylindrical port (301) and a tip (302) arranged at an end of the cylindrical port (301), the plating layer (4) is arranged inside the cylindrical port (301), a tip hole (303) is arranged on the tip (302), and a tip of the tooth groove (5) is inclined towards the tip (302).

3. An aerospace general purpose crimp type ground cable according to claim 2, wherein the tip of the gullet (5) is bent toward the tip (302) and forms an arc-shaped hook structure.

4. An aerospace general purpose crimp type ground cable according to claim 2, wherein the tip (302) is provided with a lettering (6).

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