WO2018120031A1

WO2018120031A1 - Device and method for branching and bonding cable

Info

Publication number: WO2018120031A1
Application number: PCT/CN2016/113531
Authority: WO
Inventors: 许国涛; 赵�怡; 马伯奎
Original assignee: 德尔福派克电气系统有限公司
Priority date: 2016-12-30
Filing date: 2016-12-30
Publication date: 2018-07-05

Abstract

Described herein is a wiring assembly (100) having a primary loop and a secondary loop branching from the primary loop. The assembly (100) comprises: a first cable (102) forming the primary loop, the first cable having a first conductor (102A) axially surrounded by a first insulating sheath (102B); and a second cable (104) forming the secondary loop, the second cable having a second conductor (104A) axially surrounded by a second insulating sheath (104B). The middle portion of the first insulating sheath (102B) is removed to expose the first conductor (102A), and the end portion of the second insulating sheath (104B) is removed to expose the second conductor (104A). The assembly (100) further comprises a wire bonding device (106); the wire bonding device has a first arm (108) defining a first pair of wire crimping wings (114), the first pair of wire crimping wings and the first conductor (102A) being in compressed contact; the wire bonding device further has a second arm (110) extending generally perpendicular from the first arm (108) and defining a second pair of wire crimping wings (118), the second pair of wire crimping wings and the second conductor (104A) ) being in compressed contact.

Description

Apparatus and method for branching a cable

Technical field

The present invention generally relates to a branch joint device and a method for branching an electrical cable.

Background technique

In the manufacture of electrical wiring or wiring harnesses, electrical wiring is, for example, those used in motor vehicles, and it is sometimes desirable to create a secondary circuit by branching from the main circuit by manufacturing a branching joint as shown in FIG. As shown in FIG. 1, the secondary loop can be formed by removing a length of insulator from the central portion of the first cable 2 forming the main loop and by placing the conductive tubular collar 6 on the two cables 2. At the joint of 4 and the first and second cables are crimped together by a groove 8 at at least one side of the ferrule 6 to attach the exposed conductor of the second cable 4 forming the secondary loop The end, electrically conductive tubular collar 6 is for example the copper tube shown in Figure 2. As shown in Figure 3, the exposed conductors of the first cable 2 and the second cable 4 are placed side by side in the ferrule 6, and then, as shown in Figures 1 and 4, the ferrule is longitudinally embossed The ferrule is crimped to the first cable 2 and the second cable 4. As can be seen in Figure 4, the method can form a gap 10 between the first cable 2 and the second cable 4 and the ferrule 6, the space 10 possibly affecting the first cable 2 and the second cable 4 The strength and reliability of the connection between. If there is a difference in diameter between the first cable 2 and the second cable 4, a gap is more likely to be generated. Thus, there is still a desire for a more robust apparatus and method for branching a cable to attach a secondary circuit to the primary loop.

The subject matter discussed in the Background section should not be considered as prior art merely because it is referred to in the background section. Similarly, problems mentioned in the background section or associated with the subject matter of the background section should not be considered as recognized in the prior art. The topics in the background section represent only different implementation methods, and the topics themselves may be creative.

Summary of the invention

According to an embodiment of the present invention, there is provided a wiring assembly having a main loop and a secondary loop branched from the main loop. The wiring assembly includes a first cable forming a main loop, the first cable having a first conductor axially surrounded by the first insulating sheath, and a second cable forming a secondary loop having a second cable a second conductor axially surrounding the second insulating sheath. The intermediate portion of the first insulating sheath is removed to expose the intermediate portion of the first conductor, and the distal portion of the second insulating sheath is removed to expose the second conductor The far side. The wiring assembly further includes a wire engaging device having a first arm defining a first pair of wire crimping wings, the first pair of wire crimping wings being in compressive contact with the exposed intermediate portion of the first conductor, and having a slave The first arm extends generally perpendicularly and defines a second arm of the second pair of wire crimping wings that are in compressive contact with the exposed end portions of the second conductor.

The first arm can define a first pair of insulated crimp wings that are in compressive contact with the first insulating sheath and a second pair of insulated crimp wings that are in compressive contact with the first insulating sheath. The first and second pairs of insulating crimping wings are located on the first arm such that when the first pair of wire crimping wings are in compressive contact with the exposed intermediate portion of the first conductor, the first and second pairs of insulating crimping wings are located On the opposite side of the exposed intermediate portion of a conductor. The second arm can also define a third pair of insulated crimp wings that are in compressive contact with the second insulating sheath.

The first arm and the second arm may be integrally formed with the wire engaging device. The wire bonding device can be formed from a metal foil.

Further features and advantages of the present invention will become apparent from the Detailed Description of the <RTIgt;

DRAWINGS

The invention will now be described by way of example with reference to the accompanying drawings in which:

1 is a perspective view of a wiring assembly having a main circuit and a secondary circuit branched from the main circuit according to the prior art;

2 is a perspective view of a tubular ferrule for the wiring assembly of FIG. 1 according to the prior art;

Figure 3 is a cross-sectional view of the wiring assembly of Figure 1 prior to crimping the ferrule in accordance with the prior art;

4 is a cross-sectional view of the wiring assembly of FIG. 1 after crimping the ferrule according to the prior art;

Fig. 5 is a perspective view of a wiring assembly having a main circuit and a secondary circuit branched from the main circuit, according to the first embodiment.

detailed description

Described herein are apparatus and methods for joining two or more shielded cables together to form a wiring assembly having a primary loop and a secondary loop branched from the primary loop. The apparatus and method can be used to join a cable with a single center conductor, ie a solid cable, or a multi-center conductor, ie a strand. The devices and methods described herein are used to join two cables to form a T-junction.

FIG. 5 shows a non-limiting example of a wiring assembly, which is hereinafter referred to as assembly 100, The assembly 100 includes two

cables

102, 104 that are joined together in a T-shaped engagement configuration. The first cable 102 is the primary loop and the second cable 104 is the secondary loop that branches from the primary loop. The two

cables

102, 104 each have a first core conductor 102A and a second core conductor 104A, the first core conductor 102A and the second core conductor 104A being axially surrounded by a first insulating sheath 102B and a second insulating sheath 104B, respectively . The first core conductor 102A and the second core conductor 104A are preferably formed of a stranded, ie multi-wire core, but may also be formed from a solid single-wire core. As shown in FIG. 5, the intermediate or central portion of the insulative jacket 102B is removed to expose a portion of the core conductor 102A. The distal or end portion of the insulative sheath 104B is removed to expose a portion of the core conductor 104A.

The assembly 100 also includes a device configured to create a mating connection between the two

cables

102, 104, which device is hereinafter referred to as the engagement device 106. As shown in Figure 5, the engagement device has two arms that are planar and generally rectangular. One of the two arms (hereinafter referred to as the first arm 108) is substantially perpendicular to the other arm (hereinafter referred to as the second arm 110). As used herein, substantially perpendicular means ±10° absolute. The first arm and the second arm are integrally formed with the engagement device 106. The end 112 of the first arm 108 defines a first pair of wire crimping wings 114, as shown in FIG. 5, with the exposed intermediate portion of the core conductor 102A disposed in the first pair of wire crimping wings 114. Next, the first pair of wire crimping wings 114 are wrapped around the exposed core conductor 102A such that the first pair of wire crimping wings 114 are in compressive contact with the core conductor 102A, thereby providing mechanical and electrical communication between the core conductor 102A and the engagement device 106. contact. The end 116 of the second arm 110 defines a second pair of wire crimping wings 118, as shown in FIG. 5, with the exposed end portions of the core conductors 104A disposed in the second pair of wire crimping wings 118. Next, the second pair of wire crimping wings 118 are wrapped around the exposed core conductor 104A such that the second pair of wire crimping wings 118 are in compressive contact with the core conductor 104A, thereby providing mechanical and electrical communication between the core conductor 104A and the engagement device 106. Contact, and thus electrical continuity between the first core conductor 102A and the second core conductor 104A. The design of the

wire crimping wings

114, 118 and the techniques for making them in compressive contact with the first core conductor 102A and the second core conductor 104A are well known to those skilled in the art.

As shown in FIG. 5, the first arm 108 also defines a first pair of insulating wings 120 and a second pair of insulating wings 122 on the sides of the first wire crimping wings 114. The first pair of insulating crimping wings 120 and the second pair of insulating crimping wings 122 are wrapped around the first cable 102 such that they are in compressive contact with the insulative jacket 102B on both sides of the exposed core conductor 102A. As shown in FIG. 5, the second arm 110 also defines a third pair of insulating wings 124 adjacent the second wire crimping wings 118. The third pair of insulating wings 124 are wrapped around the second cable 104 such that they are in compressive contact with the insulative jacket 104B adjacent the exposed core conductor 104A. As can be seen in Figure 5, the

insulative crimping wings

120, 122, 124 are generally narrower than the

wire crimping wings

114, 118. Insulated crimping wing 120, The design of 122, 124 and the techniques for bringing them into compression contact with an insulating sheath are well known to those skilled in the art.

The engagement means 106 can be formed by stamping the engagement means 106 from the sheet metal member such that the second arm 110 is generally perpendicular to the first arm 108 in an L-shape as shown in FIG. The crimp wings can also flex as the stamping operation causes them to be configured to receive the first cable 102 and the second cable 104.

Thus, a cable assembly 100 having an engagement device 106 and a method of joining the

cables

102, 104 together using such a device 106 are provided. The engagement device 106 provides the benefit of being able to separately determine the dimensions of the crimp wings 114-124 on the first arm 108 and the second arm 110 such that the crimp wings 114-124 can be optimized to accommodate the first cable 102 and the first The two cables 104 have different diameters. Since the technique of forming a crimp connection using crimped wings is well understood by those skilled in the art, the engagement device 106 also provides the benefit of a high reliability connection.

Although the present invention has been described in its preferred embodiments, the invention is not intended to be limited thereto, but is limited only by the scope of the appended claims. Moreover, the use of the terms first, second, etc. does not denote any order of importance, but rather the terms first and second are used to distinguish different components. In addition, the use of one, one, etc. does not indicate a limitation on the quantity, but rather indicates that there is at least one referenced item.

Claims

A wiring assembly (100) having a main circuit and a secondary circuit branched from the main circuit, the wiring assembly (100) comprising:

a first cable (102), the first cable forming the main circuit and having a first conductor (102A) axially surrounded by a first insulating sheath (102B), wherein the first insulating sheath The intermediate portion of (102B) is removed to expose an intermediate portion of the first conductor (102A);

a second cable (104), the first cable forming the secondary loop and having a second conductor (104A) axially surrounded by a second insulating sheath (104B), wherein the second insulating guard The end portion of the sleeve (104B) is removed to expose a distal end portion of the second conductor (104A);

a wire engaging device (106) having a first arm (108) defining a first pair of wire crimping wings (114), the first pair of wire crimping wings and the first conductor (102A) The exposed intermediate portion compresses the contact, and the wire engaging device has a second arm (110) extending generally perpendicularly from the first arm (108) and defining a second pair of wire crimping wings (118), the second The wire crimping wings are in compressive contact with the exposed end portions of the second conductor (104A).
The wiring assembly (100) of claim 1 wherein said first arm (108) defines a first pair of insulated crimping wings in compressive contact with said first insulative sheath (102B) ( 120) and a second pair of insulating crimping wings (122) in compressive contact with the first insulating sheath (102B), and wherein the first pair of insulating crimping wings (120) and the second pair of insulation The crimping wings (122) are located on opposite sides of the exposed intermediate portion of the first conductor (102A).
The wiring assembly (100) of claim 2, wherein the second arm (110) defines a third pair of insulated crimping wings that are in compressive contact with the second insulating sheath (104B) ( 124).
The wiring assembly (100) according to claim 1, wherein the first arm (108) and the second arm (110) are integrally formed with the wire bonding device (106).
The wiring assembly (100) according to claim 1, wherein the wire bonding device (106) is formed of a sheet metal member, and wherein the first arm (108) and the second arm ( 110) Formed by a stamping and bending process from a sheet metal part.