Automobile wire harness bending tool capable of preventing deformation recovery

By using heating and softening and combining the conveying structure, the problem of deformation and springback after wire harness bending was solved, achieving a stable multi-angle bending effect.

CN224273073UActive Publication Date: 2026-05-26YOULIAN ELECTRIC SYST (SUZHOU) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
YOULIAN ELECTRIC SYST (SUZHOU) CO LTD
Filing Date
2025-05-19
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing automotive wiring harness bending equipment is prone to deformation and springback after bending, making it difficult to achieve the desired fixing effect.

Method used

Heating wires are used to soften the wire harness material, and a combination of wire feeding rollers and bending rollers is used for bending. Combined with a hydraulic motor and gear transmission system, stable wire harness feeding and multi-angle bending are achieved.

Benefits of technology

It effectively prevents wire harness deformation recovery, ensuring the stability and reliability of bending effect.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an automobile wire harness bending tool capable of preventing deformation recovery, and relates to the field of automobile wire harness processing equipment, the automobile wire harness bending tool comprises a processing bin, two symmetrically distributed connecting plates are fixedly connected between the inner walls of the front side and the rear side of the processing bin, and the interiors of the connecting plates are rotatably connected with shells; the left end of the outer shell is rotationally connected with the inner wall of the left side of the treatment bin, a first gear set is arranged on the outer surface of the outer shell, sealing rings are fixedly connected to the positions, close to the two ends of the outer shell, of the inner side of the outer shell correspondingly, an inner shell is fixedly connected to the inner sides of the two sealing rings, and a plurality of heating wires are fixedly installed between the two sealing rings. According to the utility model, the heating wire arranged between the outer shell and the inner shell is used for heating the wire harness, and the wire harness is conveyed through the wire conveying roller, so that the material of the wire harness can be softened and bent, the material is hardened after the wire harness is bent and cooled, and the effect of preventing deformation recovery can be achieved.
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Description

Technical Field

[0001] This utility model relates to the field of automotive wiring harness processing equipment, specifically to an automotive wiring harness bending fixture that prevents deformation recovery. Background Technology

[0002] Automotive wiring harnesses are a core component of automotive electrical systems, responsible for power transmission, signal transmission, and data communication. They consist of multiple strands of wires wrapped in insulating material and connect various electrical components of the vehicle. The design and manufacture of wiring harnesses require comprehensive consideration of electrical performance, mechanical performance, environmental adaptability, safety, and production costs to ensure their performance and reliability during automotive manufacturing and use.

[0003] Most existing automotive wiring harness bending equipment directly bends the wiring harness. Due to the softness of the wiring harness itself, this material characteristic makes it prone to deformation and springback after bending, resulting in an unsatisfactory bending effect and difficulty in achieving the expected fixing effect. Therefore, an automotive wiring harness bending fixture that prevents deformation and springback is proposed to solve the problems mentioned above. Utility Model Content

[0004] To solve the above-mentioned technical problems, a bending fixture for automotive wiring harnesses that prevents deformation recovery is provided. This technical solution addresses the issue that most of the methods mentioned in the background technology involve directly bending the wiring harness. Due to the softness of the wiring harness itself, this material characteristic makes it prone to deformation recovery after bending, resulting in an unsatisfactory bending effect and difficulty in achieving the expected fixing effect.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A bending fixture for automotive wiring harnesses to prevent deformation recovery includes a processing chamber. Two symmetrically distributed connecting plates are fixedly connected between the inner walls of the front and rear sides of the processing chamber. A housing is rotatably connected inside the connecting plates. The left end of the housing is rotatably connected to the left inner wall of the processing chamber. A gear set one is provided on the outer surface of the housing. Sealing rings are fixedly connected to the inner sides of the housing near the two ends of the housing. An inner shell is fixedly connected to the inner sides of the two sealing rings. Multiple heating wires are fixedly installed between the two sealing rings. Fixing plates are fixedly connected to the inner walls of the front and rear sides of the processing chamber. A wire feeding roller is rotatably connected between the two fixing plates. A gear set two is fixedly connected to the front side of each of the two wire feeding rollers.

[0007] Preferably, the processing chamber has two opposing openings on both the left and right sides, and an adjustment chamber is fixedly connected to the right side of the processing chamber, with a material conveying hole through the right side of the adjustment chamber.

[0008] Preferably, two sliding grooves are formed through the right side of the adjustment chamber, and connecting columns are slidably connected inside the two sliding grooves. Adjustment blocks are fixedly connected to the left side of the two connecting columns, and racks are fixedly connected to the lower side of the adjustment blocks.

[0009] Preferably, T-shaped limiting blocks are slidably connected to both the upper and lower sides of the adjusting block, and the right sides of the two T-shaped limiting blocks are fixedly connected to the left inner wall of the adjusting chamber.

[0010] Preferably, the rack meshes with a drive gear, and the right side of the drive gear is rotatably connected to the right inner wall of the adjustment chamber.

[0011] Preferably, a fixed bracket is fixedly connected to the right side of the connecting column, and a hydraulic motor is fixedly installed at the top inner side of the fixed bracket. The output end of the hydraulic motor passes through the upper side of the fixed bracket and is fixedly connected to a drive wheel. A fan-shaped plate is provided on the upper side of the drive wheel.

[0012] Preferably, a driven wheel is fixedly connected to the lower side of the sector plate, the driven wheel meshes with the driving wheel, the lower surface of the driven wheel is rotatably connected to the upper end of the fixed bracket, two bending rollers are fixedly connected to the upper side of the sector plate, and a fixed roller is fixedly connected to the upper end of the sector plate.

[0013] Preferably, the bottom end of the fixed roller is fixedly connected to the upper surface of the fixed bracket, and a wire feeding groove is formed inside the fixed roller.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] In this invention, the wire harness is heated by a heating wire installed between the outer shell and the inner shell, and transported by a wire conveyor roller. This softens the wire harness material and causes it to bend. After the wire harness is bent and cooled, the material hardens, thereby preventing deformation and recovery. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the processing chamber in this utility model;

[0018] Figure 3 This is an exploded view of the outer shell of this utility model;

[0019] Figure 4 This is an exploded view of the regulating chamber in this utility model;

[0020] Figure 5 This is an exploded view of the fixed bracket in this utility model.

[0021] The numbers on the map are:

[0022] 1. Processing chamber; 2. Adjustment chamber; 3. Fixed bracket; 4. Opening; 5. Outer shell; 6. Gear set one; 7. Gear set two; 8. Feed roller; 9. Inner shell; 10. Heating wire; 11. Sealing ring; 12. Slide groove; 13. Feeding hole; 14. Adjusting block; 15. T-shaped limit block; 16. Connecting column; 17. Rack; 18. Drive gear; 19. Sector plate; 20. Bending roller; 21. Fixed roller; 22. Feed groove; 23. Driven wheel; 24. Hydraulic motor; 25. Connecting plate; 26. Fixed plate; 27. Drive wheel. Detailed Implementation

[0023] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0024] Reference Figures 1-3 As shown, a bending fixture for automotive wiring harnesses to prevent deformation recovery includes a processing chamber 1. Two symmetrically distributed connecting plates 25 are fixedly connected between the inner walls of the front and rear sides of the processing chamber 1. A housing 5 is rotatably connected inside the connecting plates 25. The left end of the housing 5 is rotatably connected to the left inner wall of the processing chamber 1. A gear set 6 is provided on the outer surface of the housing 5. Sealing rings 11 are fixedly connected to the inner sides of the housing 5 near the two ends of the housing 5. An inner shell 9 is fixedly connected to the inner sides of the two sealing rings 11. Multiple heating wires 10 are fixedly installed between the two sealing rings 11. Fixing plates 26 are fixedly connected to the inner walls of the front and rear sides of the processing chamber 1. A wire feeding roller 8 is rotatably connected between the two fixing plates 26. A gear set 7 is fixedly connected to the front side of the two wire feeding rollers 8.

[0025] Specifically, the processing chamber 1, connecting plate 25, and fixing plate 26 support the outer shell 5 and the wire feeding roller 8, enabling them to operate stably. Simultaneously, a motor fixed below the outer shell 5 drives the lower gear in gear set 6, which in turn drives the gear located outside the outer shell 5, causing the outer shell 5 to rotate. This facilitates heating of the wire harness inside the inner shell 9. Openings 4 on the left and right sides of the processing chamber 1 facilitate the transport and output of the wire harness. Sealing rings 11 on both sides of the outer shell 5 fix the heating wire 10 between the outer shell 5 and the inner shell 9, allowing for heating of the wire harness inside the inner shell 9. Gear set 7, installed in front of the wire feeding roller 8, drives the two wire feeding rollers 8 to rotate towards the center, transporting the wire harness. The transport grooves on the wire feeding roller 8 facilitate the concentration and guidance of the wire harness, preventing misalignment during transport and ensuring smooth overall transport.

[0026] Reference Figures 1-4 As shown, two opposing openings 4 are provided through the left and right sides of the processing chamber 1. An adjusting chamber 2 is fixedly connected to the right side of the processing chamber 1. A material conveying hole 13 is provided through the right side of the adjusting chamber 2. Two sliding grooves 12 are provided through the right side of the adjusting chamber 2. Connecting columns 16 are slidably connected inside the two sliding grooves 12. Adjusting blocks 14 are fixedly connected to the left side of the two connecting columns 16. A rack 17 is fixedly connected to the lower side of the adjusting blocks 14. T-shaped limiting blocks 15 are slidably connected to the upper and lower sides of the adjusting blocks 14. The right side of the two T-shaped limiting blocks 15 is fixedly connected to the left inner wall of the adjusting chamber 2. The rack 17 meshes with a drive gear 18. The right side of the drive gear 18 is rotatably connected to the right inner wall of the adjusting chamber 2.

[0027] Specifically, the heated wire harness is conveyed out through the feeding hole 13 on the regulating chamber 2. At the same time, the sliding groove 12 on the regulating chamber 2 facilitates the operation of the connecting column 16, thus not obstructing the operation of the regulating block 14 driving the connecting column 16. The two T-shaped limit blocks 15 on the regulating block 14 stably restrict the regulating block 14 to the inner wall of the right side of the regulating chamber 2, thus making the operation of the regulating block 14 more stable. Meanwhile, the motor inside the regulating chamber 2 drives the drive gear 18 to rotate, so that the drive gear 18 can drive the rack 17 located below the regulating block 14. The rack 17 is set close to the arc-shaped boundary below the regulating block 14, thus driving the regulating block 14 to move inside the regulating chamber 2, so that the regulating block 14 rotates with the feeding hole 13 on the right side of the regulating chamber 2 as the center, and the connecting column 16 on the regulating block 14 also rotates with the feeding hole 13 as the center, thus facilitating the adjustment of the position of the connecting column 16 through the regulating block 14.

[0028] Reference Figures 1-5 As shown, a fixed bracket 3 is fixedly connected to the right side of the connecting column 16. A hydraulic motor 24 is fixedly installed on the top inner side of the fixed bracket 3. The output end of the hydraulic motor 24 passes through the upper side of the fixed bracket 3 and is fixedly connected to the drive wheel 27. A sector plate 19 is provided on the upper side of the drive wheel 27. A driven wheel 23 is fixedly connected to the lower side of the sector plate 19. The driven wheel 23 meshes with the drive wheel 27. The lower surface of the driven wheel 23 is rotatably connected to the upper end of the fixed bracket 3. Two bending rollers 20 are fixedly connected to the upper side of the sector plate 19. A fixed roller 21 is fixedly connected to the upper end of the sector plate 19. The bottom end of the fixed roller 21 is fixedly connected to the upper surface of the fixed bracket 3. A wire feeding groove 22 is opened inside the fixed roller 21.

[0029] Specifically, the fixed bracket 3 can rotate to the right side of the adjusting chamber 2 by the drive of the connecting column 16, thereby adjusting the bending direction of the wire harness and allowing the wire harness to bend in multiple directions, both vertically and horizontally. At the same time, the fixed roller 21 and the wire feeding groove 22 on the fixed bracket 3 rotate around the feeding hole 13, with the wire feeding groove 22 and the feeding hole 13 corresponding to each other. This facilitates the feeding of the wire harness and prevents the wire harness from shifting due to the deviation between the wire feeding groove 22 and the feeding hole 13 when the fixed roller 21 rotates. Then, the hydraulic motor 24 below the fixed bracket 3 drives the upper drive wheel 27 to rotate, and the power is transmitted to the sector plate 19 through the driven wheel 23. The bending roller 20 on the sector plate 19 can then bend the angle of the wire harness. At the same time, the wire feeding groove 22 on the fixed roller 21 accommodates and limits the wire harness, making it easier to bend the wire harness. Finally, the fixed roller 21 is connected to the upper part of the fixed bracket 3 from below, so that the fixed roller 21 does not rotate when the wire harness is bent.

[0030] Working principle: During use, the wire harness that needs to be bent is fed into the inner shell 9 through the opening 4 on the left side of the processing chamber 1. At the same time, the heating wire 10 on the outside of the inner shell 9 heats the wire harness in the inner shell 9, making it easier to bend. Heating also softens the material. After bending, cooling the wire harness maintains the bending angle, making it easier to use later. The motor drives the gear set 6 to rotate, which in turn rotates the outer shell 5 and the inner shell 9, thus fully heating and softening the wire harness. The wire harness is concentrated by the wire feeding roller 8 on the right side of the inner shell 9, making it easier to bend later. The roller groove on the wire feeding roller 8 facilitates the movement of the wire harness. At the same time, the motor below drives the gear set 7 and the wire feeding roller 8 to rotate, thus conveying the wire harness through the wire feeding roller 8.

[0031] The wire harness is fed into the fixed roller 21 through the adjustment chamber 2 and the feeding hole 13. The hydraulic motor 24 below the fixed roller 21 drives the drive wheel 27, the driven wheel 23 and the sector plate 19 to rotate. The two bending rollers 20 on the sector plate 19 bend the wire harness in different directions. At the same time, by adjusting the position between the bending roller 20 and the wire feeding groove 22 on the fixed roller 21, the wire harness can be bent at different angles.

[0032] When the direction of the sector plate 19 and the bending roller 20 needs to be adjusted, the motor inside the adjustment chamber 2 starts, and the operation of the drive gear 18 drives the adjustment block 14 with the rack 17 installed to move inside the adjustment chamber 2. Then, the angle of the adjustment chamber 2 is adjusted through the connecting column 16, so as to adapt to the needs of bending the wire harness at different angles, thereby achieving the effect of bending the wire harness at multiple angles according to the requirements.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A bending fixture for automotive wiring harnesses to prevent deformation recovery, characterized in that, The device includes a processing chamber (1), with two symmetrically distributed connecting plates (25) fixedly connected between the inner walls of the front and rear sides of the processing chamber (1). A shell (5) is rotatably connected inside the connecting plates (25). The left end of the shell (5) is rotatably connected to the left inner wall of the processing chamber (1). A gear set (6) is provided on the outer surface of the shell (5). Sealing rings (11) are fixedly connected to the inner sides of the shell (5) near the two ends of the shell (5). An inner shell (9) is fixedly connected to the inner sides of the two sealing rings (11). Multiple heating wires (10) are fixedly installed between the two sealing rings (11). Fixing plates (26) are fixedly connected to the inner walls of the front and rear sides of the processing chamber (1). A feed roller (8) is rotatably connected between the two fixing plates (26). A gear set (7) is fixedly connected to the front side of the two feed rollers (8).

2. The automotive wiring harness bending fixture for preventing deformation recovery according to claim 1, characterized in that: The processing chamber (1) has two opposing openings (4) on both the left and right sides. An adjustment chamber (2) is fixedly connected to the right side of the processing chamber (1). A material conveying hole (13) is opened through the right side of the adjustment chamber (2).

3. The automotive wiring harness bending fixture for preventing deformation recovery according to claim 2, characterized in that: Two sliding grooves (12) are opened through the right side of the regulating chamber (2). A connecting column (16) is slidably connected inside the two sliding grooves (12). An adjusting block (14) is fixedly connected to the left side of the two connecting columns (16). A rack (17) is fixedly connected to the lower side of the adjusting block (14).

4. The automotive wiring harness bending fixture for preventing deformation recovery according to claim 3, characterized in that: The upper and lower sides of the adjusting block (14) are slidably connected with T-shaped limiting blocks (15), and the right side of the two T-shaped limiting blocks (15) is fixedly connected to the left inner wall of the adjusting chamber (2).

5. The automotive wiring harness bending fixture for preventing deformation recovery according to claim 4, characterized in that: The rack (17) meshes with a drive gear (18), and the right side of the drive gear (18) is rotatably connected to the right inner wall of the adjustment chamber (2).

6. The automotive wiring harness bending fixture for preventing deformation recovery according to claim 3, characterized in that: A fixed bracket (3) is fixedly connected to the right side of the connecting column (16). A hydraulic motor (24) is fixedly installed on the top inner side of the fixed bracket (3). The output end of the hydraulic motor (24) passes through the upper side of the fixed bracket (3) and is fixedly connected to a drive wheel (27). A fan-shaped plate (19) is provided on the upper side of the drive wheel (27).

7. The automotive wiring harness bending fixture for preventing deformation recovery according to claim 6, characterized in that: A driven wheel (23) is fixedly connected to the lower side of the sector plate (19). The driven wheel (23) meshes with the driving wheel (27). The lower surface of the driven wheel (23) is rotatably connected to the upper end of the fixed bracket (3). Two bending rollers (20) are fixedly connected to the upper side of the sector plate (19). A fixed roller (21) is fixedly connected to the upper end of the sector plate (19).

8. The automotive wiring harness bending fixture for preventing deformation recovery according to claim 7, characterized in that: The bottom end of the fixed roller (21) is fixedly connected to the upper surface of the fixed bracket (3), and a wire feeding groove (22) is provided inside the fixed roller (21).