Stretch-resistant automobile wire harness

Abstract

A tensile automobile wire harness comprises a wire harness, a connector terminal connected to the end portion of the wire harness, a protective layer arranged on the periphery of the wire harness on the side away from the connector terminal, and a tensile buckle which is located between the connector terminal and the protective layer, is of a symmetrical split structure and is pressed on the wire harness in a butt joint mode, and the front portion of the tensile buckle is connected with the rear portion of the connector terminal in a clamped mode. The rear portion is provided with a wire harness protection layer which is connected with a protection layer on the periphery of the wire harness, and the width of the wire harness protection layer is gradually reduced to the tail end along the wire harness extension defense line to be consistent with the wire harness heat preservation layer. The wire harness is prevented from being separated from the connector terminal under the action of external force, the tensile property of the connecting position of the wiring terminal of the wire harness and the wire harness is improved, the protective layer is arranged on the rear portion to completely wrap the wire harness, and the strength and flame retardant property of the wire harness are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile wiring harnesses, in particular to an anti-stretching automobile wiring harness. Background Art

[0002] Traditional automotive wiring harnesses are small and can easily break under the pulling of external forces inside the car, putting the car in a dangerous situation. In particular, the wiring harnesses at the terminal blocks are usually not completely wrapped during the manufacturing process, resulting in part of the wiring harness being exposed and arranged horizontally, with relatively weak tensile resistance.

[0003] As attached Figure 1 In the automotive wiring harness shown in the figure, the wires at the connector terminals are scattered and exposed. When pulled by external force, they are easily damaged, causing leakage of the wiring harness and easily causing fire. Utility Model Content

[0004] In view of the problems and shortcomings in the prior art, the utility model provides a stretch-resistant automobile wiring harness.

[0005] The technical solution of this utility model is as follows:

[0006] A stretch-resistant automobile wiring harness comprises a wiring harness and a connector terminal connected to the end of the wiring harness. A protective layer is arranged on the periphery of the wiring harness away from the connector terminal. The wiring harness protective layer comprises an inner protective layer and an outer protective layer, wherein the inner protective layer is a heat shrinkable sleeve and the outer layer is a polyvinyl chloride sheath.

[0007] The stretch-resistant automobile wiring harness of the utility model also includes a stretch-resistant buckle, which is located between the connector terminal and the protective layer, and is a symmetrical split structure. It is pressed on the wiring harness by docking, and the front part is clamped with the rear part of the connector terminal. The rear part is provided with a wiring harness protective layer, which is connected to the protective layer on the periphery of the wiring harness, and its width gradually decreases along the extension line of the wiring harness to the end and is consistent with the outer diameter of the front end of the wiring harness protective layer.

[0008] The front end of the anti-tensile buckle is used to compress the wiring harness and ensure that it is fixedly connected to the connector terminal to prevent the wiring harness from falling out of the terminal when pulled by external force. The rear protective layer is used to protect the exposed and side-by-side scattered wiring harness from the connector terminal to the wiring harness protective layer to prevent this part of the wiring harness from being damaged by external force, or the internal wire core from leaking out due to aging, causing safety hazards, thereby improving the tensile resistance and service life of the wiring harness and reducing the risk of vehicle failure.

[0009] The utility model discloses an anti-stretch automobile wire harness, wherein the anti-stretch buckle comprises an upper shell and a lower shell, the front parts of the upper shell and the lower shell are connected up and down, and the outer ring sleeve at the rear is provided with a corrugated tube outer sheath.

[0010] The main bodies of the upper shell and the lower shell are symmetrical in structure, the difference is that the upper shell is provided with a card joint for connecting with the connector terminal. Both the upper shell and the lower shell include a card joint part and a protective part arranged in front and back, the card joint part is used to fix the wire harness and connect with the connector terminal, and the protective part is used to protect the wire harness.

[0011] The inner side surfaces of the clamping parts of the upper shell and the lower shell are provided with a wire pressing groove with openings facing each other, which can press the wire harness close to the connector terminal. The wire pressing groove adopts a circular arc groove with a size close to the outer diameter of a single wire in the wire harness, and the arc length is less than the semicircular arc length, in order to generate a squeezing force on the wires in the wire harness so that the wire harness is firmly fixed. The above-mentioned wire pressing groove is provided in plurality according to the number of wires in the wire harness, and is arranged at intervals along the width direction of the upper shell and the lower shell.

[0012] The upper shell and the lower shell are provided with a plug and a bayonet on the inner side of the docking surface, which are located on both sides of the wire crimping groove and are used to connect the upper and lower shells. Among them, the bottom surface of the upper shell is provided with a bayonet, and the top surface of the lower shell is provided with a plug. The wiring harness is fixed by the upper and lower cooperation of the bayonet and the plug. At the same time, the upper and lower shells are connected by a corrugated tube arranged on the outer surface of the protective part to prevent the upper and lower shells from separating, and play a role in connecting the protective part of the upper and lower shells and protecting the wiring harness. The material of the outer sheath of the corrugated tube is polyvinyl chloride, which protects the wiring harness and has a flame retardant effect.

[0013] A clamping joint is also provided on the top surface of the clamping part of the upper shell, and a clamping boss is provided at the corresponding position at the rear of the connector terminal. The connector terminal and the anti-tensile buckle are connected by cooperating with the clamping joint and the clamping boss to prevent the wiring harness from being pulled off near the connector terminal, thereby improving the anti-tensile performance of the wiring harness and thus improving the safety of the service life.

[0014] The clamping boss is a boss with a triangular cross section with the front end facing forward and upward, and the clamping joint is located at the front of the top of the clamping part of the upper shell and extends forward from the clamping part, and a clamping groove is provided in the middle thereof for clamping with the clamping boss. To facilitate assembly and disassembly, the front of the clamping joint is inclined forward and upward to form a pushing part.

[0015] The stretch-resistant automobile wiring harness of the utility model has a protective part whose width gradually decreases along the extension direction of the wiring harness, and whose end size is consistent with the diameter of the wiring harness, and a cavity for accommodating the wiring harness is provided inside the protective part. The specific shape of the protective part is that the cross section of the front half is a trapezoid, and the cross section of the rear half is a rectangle, the interior of the front half is a trapezoidal placement groove, and the rear half is a semicircular placement groove equal to the outer diameter of the wiring harness.

[0016] The beneficial effects of the utility model are:

[0017] On the basis of the existing wiring harness, an anti-stretch buckle is added, one end of which is connected to the connector terminal and the other end is adjacent to the wiring harness protective layer, so that the wiring harness is completely wrapped, improving the anti-stretch performance of the wiring harness. In addition, the anti-stretch buckle is set as an upper and lower split structure, the front part fixes the wiring harness through the wire pressing groove and is connected to the wiring terminal to prevent the wiring harness from being separated from the connector terminal under the action of external force, improve the tensile performance of the connection between the wiring terminal and the wiring harness, and a protective layer is set at the rear to completely wrap the wiring harness, improving the strength and flame retardant performance of the wiring harness. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the prior art;

[0019] Figure 2 A perspective view of an embodiment;

[0020] Figure 3 It is a schematic diagram of the planar structure of an embodiment;

[0021] Figure 4 This is an exploded view of the connector terminal and the anti-stretch buckle;

[0022] Figure 5 : are exploded views of the anti-stretch buckle, wherein (a) is an exploded view from a first viewing angle; (b) is an exploded view from a second viewing angle; DETAILED DESCRIPTION

[0023] The following will further describe the technical means adopted to achieve the predetermined inventive purpose of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0024] See also Figure 2 and Figure 3 As shown, a stretch-resistant automotive wiring harness includes a wiring harness 3 and a connector terminal 1 connected to the end of the wiring harness. A protective layer is provided on the outer periphery of the wiring harness away from the connector terminal 1. The wiring harness protective layer includes an inner protective layer 4 and an outer protective layer 5, wherein the inner protective layer 4 is a heat shrinkable sleeve and the outer layer is a polyvinyl chloride sheath.

[0025] See also Figure 2 and Figure 3 As shown, the stretch-resistant automobile wiring harness of the utility model also includes a stretch-resistant buckle 2, which is located between the connector terminal 1 and the protective layer. It is a symmetrical split structure, which is pressed on the wiring harness by docking, and the front part is clamped with the rear part of the connector terminal 1. The rear part is provided with a wiring harness protective layer, which is connected to the protective layer on the periphery of the wiring harness, and its width gradually decreases along the extension line of the wiring harness to the end and is consistent with the outer diameter of the front end of the wiring harness protective layer.

[0026] The front end of the anti-tensile buckle 2 is used to compress the wiring harness and ensure that it is fixedly connected to the connector terminal 1 to prevent the wiring harness from falling out of the terminal when pulled by external force. The rear protective layer is used to protect the exposed and side-by-side dispersed wiring harness from the connector terminal 1 to the wiring harness protective layer to prevent this part of the wiring harness from being damaged by external force, or the internal wire core from leaking out due to aging, causing safety hazards, thereby improving the tensile resistance and service life of the wiring harness and reducing the risk of vehicle failure.

[0027] See also Figure 5 As shown, the stretch-resistant automobile wiring harness of the utility model, the stretch-resistant buckle 2 comprises an upper shell 21 and a lower shell 22, the front parts of the upper shell 21 and the lower shell 22 are clamped up and down, and the rear outer ring is provided with a corrugated tube outer sheath 23.

[0028] See also Figure 5 As shown in (a), the main bodies of the upper shell 21 and the lower shell 22 are symmetrical structures, the difference being that the upper shell 21 is provided with a clamping joint 213 for connecting with the connector terminal 1. The upper shell 21 and the lower shell 22 both include a clamping portion 211 and a protective portion 212 arranged front and back, the clamping portion 211 is used to fix the wire harness and connect with the connector terminal 1, and the protective portion 212 is used to protect the wire harness.

[0029] See also Figure 5 As shown, the inner side surfaces of the clamping parts 211 of the upper shell 21 and the lower shell 22 are provided with openings facing each other, which can compress the wire harness near the connector terminal 1. The wire crimping groove 215 is a circular arc groove close to the outer diameter of a single wire in the wire harness, and the arc length is less than the semicircular arc length, in order to generate a squeezing force on the wires in the wire harness so that the wire harness is firmly fixed. The above-mentioned wire crimping groove 215 is provided in plurality according to the number of wires in the wire harness, and is arranged at intervals along the width direction of the upper shell 21 and the lower shell 22.

[0030] See also Figure 5 As shown, the upper shell 21 and the lower shell 22 are provided with a plug 221 and a bayonet 214 that can be locked on the inner mating surface, which are located on both sides of the wire pressing groove 215 and are used to connect the upper and lower shells 22. Among them, the bottom surface of the upper shell 21 is provided with a bayonet 214, and the top surface of the lower shell 22 is provided with a plug 221. The bayonet 214 and the plug 221 are matched up and down to fix the wire harness, and the upper and lower shells are connected as a whole. Then, after the upper and lower shells are connected together by standing on the street at the rear, a corrugated tube outer sheath 23 is provided on the outer surface of the protective part 212, which plays a role in improving the tensile resistance of the protective part 212 of the upper and lower shells and protecting the wire harness. The material of the corrugated tube outer sheath 23 is polyvinyl chloride, which plays a role in protecting the wire harness and flame retardant.

[0031] See also Figure 4 and Figure 5As shown in (a), a clamping joint 213 is also provided on the top surface of the clamping portion 211 of the upper shell 21, and a clamping boss 11 is provided at a corresponding position at the rear of the connector terminal 1. The connector terminal 1 and the anti-tensile buckle 2 are connected by the cooperation of the clamping joint 213 and the clamping boss 11 to prevent the wiring harness from being broken near the connector terminal 1, thereby improving the anti-tensile performance of the wiring harness and thus improving the safety of the service life.

[0032] See also Figure 4 As shown, the clamping boss 11 is a boss with a triangular cross section with a front end facing forward and upward, and the clamping joint 213 is located at the front of the top of the clamping portion 211 of the upper shell 21 and extends forward from the clamping portion 211, and a clamping groove is provided in the middle thereof for clamping with the clamping boss 11. To facilitate assembly and disassembly, the front of the clamping joint 213 is tilted forward and upward to form a pushing portion.

[0033] See also Figure 1-5 As shown, in the tensile-resistant automobile wiring harness of the utility model, the width dimension of the protective part 212 gradually decreases along the extension direction of the wiring harness, and the end dimension is consistent with the diameter of the wiring harness, and a cavity for accommodating the wiring harness is provided inside it. The specific shape of the protective part 212 is that the cross section of the front half is a trapezoid, and the cross section of the rear half is a rectangle. The interior of the front half is a trapezoidal placement groove, and the rear half is a semicircular placement groove equal to the outer diameter of the wiring harness.

[0034] The above is a preferred embodiment of the present invention, but the present invention is not limited to the above embodiments and examples. Various changes, equivalent substitutions, improvements, etc. made within the knowledge scope of those skilled in the art without departing from the concept of the present invention should be included in the protection scope of the present invention.

Claims

1. A stretch-resistant automotive wiring harness, comprising a wiring harness (3) and a connector terminal (1) connected to an end of the wiring harness, wherein a protective layer is provided on the outer periphery of the wiring harness away from the connector terminal; It is characterized in that It also includes an anti-stretch buckle (2), which is located between the connector terminal (1) and the protective layer, and is a symmetrical split structure. It is pressed onto the wire harness by docking, and the front part is clamped with the rear part of the connector terminal (1). The rear part is provided with a wire harness protective layer, which is connected to the protective layer on the periphery of the wire harness, and its width gradually decreases along the extension direction of the wire harness until the end is consistent with the outer diameter of the front end of the wire harness protective layer.

2. The automotive wiring harness according to claim 1, characterized in that: The anti-stretch buckle (2) comprises an upper shell (21) and a lower shell (22), wherein the upper shell and the front part of the lower shell are connected vertically, and the rear outer ring is provided with a bellows outer sheath (23).

3. The automotive wiring harness according to claim 2, characterized in that: The upper shell (21) and the lower shell (22) comprise a clamping portion (211) and a protective portion (212) arranged front and rear, the clamping portion (211) being used to fix the wiring harness and connect to the connector terminal (1), and the protective portion (212) being used to protect the wiring harness.

4. The automotive wiring harness according to claim 3, characterized in that: The inner side surfaces of the clamping parts (211) of the upper shell and the lower shell are provided with wire pressing grooves (215) with openings facing each other, which can press the wire harness close to the connector terminal (1).

5. The automotive wiring harness according to claim 4, characterized in that: A plurality of the wire pressing grooves (215) are arranged at intervals along the width direction of the upper shell (21) and the lower shell (22).

6. The automotive wiring harness according to claim 5, characterized in that: A lockable plug (221) and a bayonet (214) are respectively provided on the inner butt joint surfaces of the upper shell (21) and the lower shell (22) for connecting the upper shell and the lower shell.

7. The automotive wiring harness according to claim 6, characterized in that: A clamping joint (213) is also provided on the top surface of the clamping portion (211) of the upper shell, and a clamping boss (11) that is clamped with the clamping joint is provided at a corresponding position on the rear of the joint terminal (1).

8. The automotive wiring harness according to claim 7, characterized in that: The clamping boss (11) is a triangular boss with a front end facing forward and tilted upward. The clamping joint (213) is located at the front of the top of the clamping portion (211) of the upper shell (21) and extends forward from the clamping portion. A clamping groove is provided in the middle thereof for clamping with the clamping boss (11).

9. The automotive wiring harness according to claim 3, characterized in that: The width of the protection part (212) gradually decreases along the extension direction of the wire harness, and the size of the end is consistent with the diameter of the wire harness, and a cavity for accommodating the wire harness is provided inside the protection part (212).

10. The automotive wiring harness according to claim 2, characterized in that: The material of the corrugated pipe outer sheath (23) is polyvinyl chloride.

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