High-flexibility low-temperature fold-resistant electric vehicle wiring harness

Abstract

The utility model discloses a kind of high-flexibility low-temperature fold-resistant electric vehicle wire harness, including wire harness body, protection tube and multiple buffer, one end of the buffer is enlarged to form compression part outward, the center of buffer is equipped with through-hole that passes through buffer and compression part, buffer is set on wire harness body by through-hole, protection tube is set on wire harness body, and is threadedly connected with buffer arrangement.The utility model is simple in structure, wire harness body straight section can be covered by protection tube, while bending portion can be bent along compression part, buffer protection can be mentioned by buffer, damage caused by right-angle bending is avoided, service life is increased, and the wire harness body has high-flexibility and low-temperature resistant effect.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle wiring harness technology, specifically to a high-flexibility, low-temperature resistant electric vehicle wiring harness. Background Technology

[0002] Electric vehicle wiring harnesses are a core component of electric vehicle electrical systems, undertaking critical tasks such as power transmission, signal transmission, and functional control. Their performance directly affects the safety, reliability, and service life of the vehicle.

[0003] However, current electric vehicle wiring harnesses have simple structures and lack designs that prevent right-angle bends. This makes them prone to right-angle bends during wiring, which can cause breakage or damage to the internal wire cores. Furthermore, the materials used in electric vehicle wiring harnesses are insufficient, lacking high toughness and low-temperature resistance, thus affecting their lifespan. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a highly flexible, low-temperature resistant electric vehicle wiring harness that can avoid damage caused by right-angle bending and can protect the straight sections of the wiring harness body, thereby solving the problems mentioned in the background art.

[0005] This utility model is achieved through the following technical solution: a high-flexibility, low-temperature folding-resistant electric vehicle wiring harness, comprising a wiring harness body, a protective tube, and multiple buffer components. One end of each buffer component expands outward to form a pressure-bearing part. Each buffer component has a through hole at its center that penetrates the buffer component and the pressure-bearing part. The buffer components are all sleeved on the wiring harness body through the through holes. The protective tube is sleeved on the wiring harness body and is threadedly connected to the buffer component.

[0006] As a preferred technical solution, the wire harness body consists of wire cores, insulation layer, filling layer, shielding layer and outer protective layer from the inside out. There are multiple wire cores, which are evenly distributed in a ring structure. The insulation layer is installed on the outer surface of the wire cores. The shielding layer is set on the outside of multiple wire cores, and a filling layer is set between the shielding layer and the insulation layer. The outer protective layer is installed on the outside of the shielding layer.

[0007] As a preferred technical solution, the buffer components are provided with annular grooves on their opposite surfaces, and metal rings are installed in the annular grooves. The opposite surfaces of the metal rings are provided with annular connecting grooves. The outer ring surface of the connecting grooves is provided with internal threads. Both ends of the protective tube are inserted into the connecting grooves, and the outer wall surfaces of both ends of the protective tube are provided with external threads. The protective tube is connected to the inner wall of the connecting groove by the engagement of the external threads with the internal threads.

[0008] As a preferred technical solution, the protective tube is made of plastic material and is divided into two halves. One half of the tube has multiple positioning holes on its opposite end face, and the other half of the tube has multiple positioning posts protruding from its opposite end face. All positioning posts are inserted into the positioning holes.

[0009] As a preferred technical solution, all cushioning components are made of elastic rubber material.

[0010] As a preferred technical solution, the openings opposite to the through holes are all chamfered to form a trumpet-shaped structure.

[0011] As a preferred technical solution, the diameter of the pressure-bearing part is set to be larger than the diameter of the buffer.

[0012] The beneficial effects of this utility model are: the utility model has a simple structure, the straight section of the wire harness body can be covered by the protective tube, and the bending part can be bent along the pressure part. The buffer can provide buffer protection, avoiding damage caused by right-angle bending, increasing service life. In addition, the wire harness body has high flexibility and low temperature resistance. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of this utility model after removing any half tube;

[0016] Figure 3 This is a schematic diagram of the structure of the buffer component of this utility model;

[0017] Figure 4 This is a side view of the buffer component of this utility model.

[0018] Among them, 1. outer protective layer; 2. buffer component; 3. pressure-bearing part; 4. half tube; 5. shielding layer; 6. filling layer; 7. insulation layer; 8. wire core; 9. positioning post; 10. metal ring; 11. connecting groove; 12. chamfer; 13. through hole. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0020] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0021] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features for a similar purpose, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0022] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this utility model discloses a high-flexibility, low-temperature folding-resistant electric vehicle wiring harness, which includes a wiring harness body, a protective tube, and multiple buffer components 2. One end of each buffer component 2 expands outward to form a pressure-bearing part 3. Each buffer component 2 has a through hole 13 at its center, which penetrates the buffer component 2 and the pressure-bearing part 3. The buffer component 2 is sleeved on the wiring harness body through the through hole 13. The protective tube is sleeved on the wiring harness body and is threadedly connected to the buffer component 2.

[0023] In this embodiment, the wire harness body consists of wire core 8, insulation layer 7, filling layer 6, shielding layer 5 and outer protective layer 1 from the inside out. There are multiple wire cores 8, which are evenly distributed in a ring structure. The insulation layer 7 is installed on the outer surface of the wire core 8. The shielding layer 5 is disposed on the outside of the multiple wire cores 8, and a filling layer 6 is disposed between the shielding layer 5 and the insulation layer 7. The outer protective layer 1 is installed on the outside of the shielding layer 5.

[0024] The wire core is made of multi-strand ultra-fine tinned copper wire, which is twisted together with fine copper wires with a diameter of 0.08~0.15mm. The bending stress concentration is reduced by layered reverse twisting (such as 7×19 structure), which improves dynamic flexibility.

[0025] The insulation layer is made of silicone rubber, which is temperature resistant from -100℃ to 200℃ and has excellent flexibility.

[0026] The filler layer is made of aramid fiber, which is lightweight and has high tensile strength, five times that of steel wire. It fills the gaps between conductors, prevents the cores from rubbing against each other, and disperses mechanical stress.

[0027] The shielding layer is made of spirally wound copper strip, which can better shield external interference;

[0028] The outer protective layer is made of wear-resistant PUR, which can withstand more than 5 million bends, further increasing its service life.

[0029] In this embodiment, the buffer 2 is provided with annular grooves on opposite surfaces, and metal rings 10 are installed in the annular grooves. The metal rings 10 are provided with annular connecting grooves 11 on opposite surfaces. The outer ring surface of the connecting grooves 11 is provided with internal threads. Both ends of the protective tube are inserted into the connecting grooves 11, and the outer wall surfaces of both ends of the protective tube are provided with external threads. The protective tube is connected to the inner wall of the connecting groove 11 by engaging with the external threads.

[0030] In this embodiment, the protective tube is made of plastic material and is divided into two halves of the tube 4. Multiple positioning holes are provided on the opposite end face of one half of the tube 4, and multiple positioning posts 9 are protruding on the opposite end face of the other half of the tube 4. The positioning posts 9 are all inserted into the positioning holes.

[0031] In this embodiment, all buffer components 2 are made of elastic rubber material, which makes the buffer components elastic.

[0032] In this embodiment, the openings opposite to the through holes 13 are all formed with chamfered corners 12 in the shape of a trumpet. The chamfers can provide a bending angle for the wire harness body, allowing the wire harness body to bend in an arc shape and avoiding right-angle bends.

[0033] In this embodiment, the diameter of the pressure-bearing part 3 is larger than the diameter of the buffer part 2, so that it can make full contact with the pressure-bearing part when bending.

[0034] The protective tube can be set to different lengths. During use, the appropriate length of protective tube can be selected according to the straight section of the wire harness body. During installation, open the protective tube and fit the two halves of the tube onto the outside of the wire harness body, one above the other. Insert the positioning pin on one half of the tube into the positioning hole of the other half of the tube to axially position the tube, avoid misalignment, and increase stability. The two ends of the protective tube can be inserted into the connecting groove and can be threaded to the protective tube through the rotating buffer. The metal ring can press the half of the tube inward to prevent it from loosening. The protective tube can protect one end of the straight section.

[0035] When the wire harness body is bent, it can bend along the chamfer and come into contact with the pressure part during the bending process. The elasticity of the pressure part plays a buffering role, avoiding damage or breakage caused by right-angle bending and increasing service life.

[0036] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.

Claims

1. A high-flexibility, low-temperature folding-resistant electric vehicle wiring harness, characterized in that: The device includes a wire harness body, a protective tube, and multiple buffer components (2). One end of each buffer component (2) expands outward to form a pressure-bearing part (3). Each buffer component (2) has a through hole (13) at its center that penetrates the buffer component (2) and the pressure-bearing part (3). Each buffer component (2) is fitted onto the wire harness body through the through hole (13). The protective tube is fitted onto the wire harness body and is threadedly connected to the buffer component (2).

2. The high-flexibility, low-temperature bending-resistant electric vehicle wiring harness according to claim 1, characterized in that: The wire harness body consists of wire cores (8), insulation layer (7), filling layer (6), shielding layer (5) and outer protective layer (1) from the inside out. There are multiple wire cores (8) and they are evenly distributed in a ring structure. The insulation layer (7) is installed on the outer surface of the wire cores (8). The shielding layer (5) is set on the outside of multiple wire cores (8), and a filling layer (6) is set between the shielding layer (5) and the insulation layer (7). The outer protective layer (1) is installed on the outside of the shielding layer (5).

3. The high-flexibility, low-temperature bending-resistant electric vehicle wiring harness according to claim 1, characterized in that: The buffer (2) has an annular groove on each of its opposite surfaces. A metal ring (10) is installed in each of the annular grooves. A connecting groove (11) with an annular structure is provided on each of the opposite surfaces of the metal ring (10). An internal thread is provided on the outer ring surface of the connecting groove (11). Both ends of the protective tube are inserted into the connecting groove (11). The outer wall surfaces of both ends of the protective tube are provided with external threads. The protective tube is connected to the internal thread on the inner wall of the connecting groove (11) through the external thread.

4. The high-flexibility, low-temperature bending-resistant electric vehicle wiring harness according to claim 1, characterized in that: The protective tube is made of plastic material and is divided into two halves (4). One half (4) has multiple positioning holes on its opposite end face, and the other half (4) has multiple positioning posts (9) protruding from its opposite end face. The positioning posts (9) are all inserted into the positioning holes.

5. The high-flexibility, low-temperature bending-resistant electric vehicle wiring harness according to claim 1, characterized in that: The buffer components (2) are all made of elastic rubber material.

6. The high-flexibility, low-temperature bending-resistant electric vehicle wiring harness according to claim 1, characterized in that: The openings opposite to the through hole (13) both form a chamfer (12) with a trumpet-shaped structure.

7. The high-flexibility, low-temperature bending-resistant electric vehicle wiring harness according to claim 1, characterized in that: The diameter of the pressure-bearing part (3) is larger than the diameter of the buffer part (2).

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