Durable tool for converting stretching into bending

Abstract

The utility model provides a tool for converting stretching into bending durability, which comprises a wire harness placed on a tool plate, the wire harness is of a naturally bent L-shaped structure on the tool plate, and the included angle of the L-shaped structure is an arc section; the tool plate is further provided with a supporting table, the supporting table is located on the side, away from the L-shaped structure, of the transverse rod, the supporting table is provided with a booster, the booster adopts an electric push rod, the output end of the electric push rod is connected with the vertical rod end of the L-shaped structure, the transverse rod end of the L-shaped structure is connected with the tool plate, and the output end of the electric push rod can drive the wire harness to be continuously and repeatedly bent. A conductor at one end of the L-shaped structure is connected with one end of the buzzer, and a shielding layer at the other end of the L-shaped structure is connected with the other end of the buzzer. According to the utility model, an actual loading layout is simulated, continuous and repeated bending tests are carried out on the wire harness through the output end of the electric push rod, the bending endurance life of the high-voltage wire harness is verified, the structure is simple, the operation is convenient, the realizability is strong, the cost can be saved, the instantaneity is realized, and the test efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile wiring harnesses, in particular to a tool capable of converting expansion and contraction into durable bending. Background Art

[0002] An automotive wiring harness is an assembly of cables and connectors used to connect various automotive electronic components. Its primary function is to transmit power and data, ensuring the proper functioning of various internal vehicle systems (such as engine control, lighting, audio, and air conditioning). An automotive wiring harness typically consists of wires, plugs, sockets, and protective tubing, and features excellent heat resistance, abrasion resistance, and water resistance. The layout of high-voltage wiring harnesses in new energy vehicles currently varies significantly across different vehicle models. In actual vehicle installation, wiring harness routing may be significantly restricted due to surrounding structural constraints or interface layout. This presents the following technical drawbacks: The wiring harness has significant bending amplitude, and shielded high-voltage cables pose the risk of shield fracture and insulation puncture after prolonged vibration. Testing is typically conducted on a test bench, which incurs high costs for custom tooling and lengthy testing cycles. Furthermore, the test bench must be disassembled after a long test cycle to verify shielding damage, resulting in limited timeliness.

[0003] Therefore, how to design a tool that can convert telescopic movement into durable bending becomes an urgent problem to be solved. Utility Model Content

[0004] In view of the problems existing in the prior art, the present invention provides a tool that can convert telescopic movement into durable bending, so as to solve at least one of the above technical problems.

[0005] The technical solution of the present utility model is: a tool that converts telescopic movement into durable bending, including a wiring harness placed on a tooling plate, wherein the wiring harness is in a naturally curved L-shaped structure on the tooling plate, and the angle of the L-shaped structure is an arc segment; a support platform is also provided on the tooling plate, and the support platform is located on the side of the horizontal bar away from the L-shaped structure, and a booster is provided on the support platform, and the booster adopts an electric push rod, and the output end of the electric push rod is connected to the vertical bar end of the L-shaped structure, and the horizontal bar end of the L-shaped structure is connected to the tooling plate, and the output end of the electric push rod can drive the wiring harness to bend continuously and repeatedly; the conductor at one end of the L-shaped structure is connected to one end of the buzzer, and the shielding layer at the other end of the L-shaped structure is connected to the other end of the buzzer.

[0006] The utility model simulates the actual loading layout and performs continuous and repeated bending tests on the wiring harness through the output end of the electric push rod to verify the bending durability of the high-voltage wiring harness. Compared with the traditional tooling table, the tooling structure is simple, the operation is convenient, the feasibility is strong, the cost can be saved, and it is immediate, which improves the test efficiency. One end of the buzzer is connected to the conductor of the wiring harness, and the other end of the buzzer is connected to the shielding layer of the wiring harness. The wiring harness is continuously bent at a certain frequency until the shielding wire pierces the inner insulation skin and the circuit is connected. When the wiring harness fails to bend, the buzzer can immediately alarm, which greatly improves the accuracy of the test data, saves time and cost, and makes the test more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 This is a schematic structural diagram of the wiring harness of the present invention in a stationary state.

[0008] Figure 2 This is a schematic structural diagram of the wiring harness of the present invention in a bent state.

[0009] In the figure: 1. Tooling plate; 2. Booster; 3. Cable tie; 4. Wiring harness; 5. Screws; 6. Buzzer. DETAILED DESCRIPTION

[0010] The present invention will be further described below with reference to the accompanying drawings.

[0011] See Figure 1-2 The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read. They are not used to limit the conditions for the implementation of this utility model, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by this utility model without affecting the efficacy and purpose that can be achieved by this utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit the scope of the implementation of this utility model. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of this utility model without substantially changing the technical content.

[0012] Example 1: A tool that converts telescopic movement into durable bending, referring to Figure 1, including a wiring harness 4 placed on a tooling board 1, wherein the wiring harness 4 is in a naturally bent L-shaped structure on the tooling board 1 to simulate the stationary state of the wiring harness on a real vehicle, and the angle of the L-shaped structure is an arc segment; a support platform is also provided on the tooling board 1, and the support platform is located on the side of the horizontal bar away from the L-shaped structure, and a booster 2 is provided on the support platform, and the booster 2 adopts an electric push rod, and the output end of the electric push rod is connected to the vertical rod end of the L-shaped structure, and the horizontal rod end of the L-shaped structure is connected to the tooling board 1, and the output end of the electric push rod can drive the wiring harness 4 to bend continuously and repeatedly; the conductor at one end of the L-shaped structure is connected to one end of the buzzer 6, and the shielding layer at the other end of the L-shaped structure is connected to the other end of the buzzer 6. The utility model simulates the actual loading layout and performs continuous and repeated bending tests on the wiring harness through the output end of the electric push rod to verify the bending durability of the high-voltage wiring harness. Compared with the traditional tooling table, the tooling structure is simple, the operation is convenient, the feasibility is strong, the cost can be saved, and it is immediate, which improves the test efficiency. One end of the buzzer is connected to the conductor of the wiring harness, and the other end of the buzzer is connected to the shielding layer of the wiring harness. The wiring harness is continuously bent at a certain frequency until the shielding wire pierces the inner insulation skin and the circuit is connected. When the wiring harness fails to bend, the buzzer can immediately alarm, which greatly improves the accuracy of the test data, saves time and cost, and makes the test more efficient.

[0013] Example 2: Based on Example 1, the crossbar end of the L-shaped structure is fixed to the top surface of the tooling plate 1 by screws 5. This utility model uses screws to fix the other end of the wire harness (the crossbar end of the L-shaped structure) to the top surface of the tooling plate, limiting the other end of the wire harness and facilitating installation and removal of the wire harness.

[0014] Example 3: Based on Example 1, the support platform is a right-angled trapezoidal structure, with the hypotenuse located on the top surface and the upper base of the right-angled trapezoidal structure close to the vertical rod end of the L-shaped structure. The vertical rod end of the L-shaped structure is connected to the output end of the electric push rod via a cable tie 3. This utility model uses a right-angled trapezoidal support platform, connects the output end of the electric push rod to one end of the wiring harness (the vertical rod end of the L-shaped structure) via a cable tie, and limits the position of one end of the wiring harness.

[0015] Example 4: Based on Example 3, the booster 2 utilizes spaced-apart electric push rods, with the two push rods arranged along the hypotenuse of a right-angled trapezoidal structure. The output ends of the two push rods are tilted downward and connected to a side end face of the same baffle. This utility model utilizes two push rods whose output ends are connected to a side end face of the same baffle. The synchronized movement of the two push rods applies pressure to the wiring harness, enabling continuous and repeated bending tests on the harness to verify the high-voltage harness's bending durability.

[0016] Example 5: Based on Example 4, the vertical rod end of the L-shaped structure is connected to the other end face of the baffle by a cable tie 3. This utility model uses a cable tie to connect one end of the wire harness (the vertical rod end of the L-shaped structure) to the baffle to limit the position of one end of the wire harness.

[0017] When implementing it, refer to Figure 2 , press the button of booster 2 to make the output end of the electric push rod extend and retract, push the wire harness 4 to bend back and forth, and simulate the fatigue resistance of the wire harness 4 to withstand reciprocating extreme bending; repeatedly press the button of booster 2 to make the wire harness 4 bend continuously at a certain frequency until the shielding wire pierces the inner insulation and the circuit is connected, the buzzer 6 alarms, and the number of bending cycles on the booster 2 is recorded, and the test ends.

[0018] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A tool for converting telescopic movement into durable bending, comprising a harness (4) placed on a tool plate (1), characterized in that: The wiring harness (4) is in a naturally curved L-shaped structure on the tooling plate (1), and the angle of the L-shaped structure is an arc segment; a support platform is also provided on the tooling plate (1), and the support platform is located on a side of the horizontal bar away from the L-shaped structure, and a booster (2) is provided on the support platform, and the booster (2) adopts an electric push rod, and the output end of the electric push rod is connected to the vertical bar end of the L-shaped structure, and the horizontal bar end of the L-shaped structure is connected to the tooling plate (1), and the output end of the electric push rod can drive the wiring harness (4) to bend repeatedly continuously; a conductor at one end of the L-shaped structure is connected to one end of a buzzer (6), and a shielding layer at the other end of the L-shaped structure is connected to the other end of the buzzer (6).

2. The tool for converting telescopic movement into durable bending according to claim 1, characterized in that: The crossbar end of the L-shaped structure is fixed to the top surface of the tooling plate (1) by means of screws (5).

3. The tool for converting telescopic movement into durable bending according to claim 1, characterized in that: The support platform is a right-angled trapezoidal structure, the hypotenuse of the right-angled trapezoidal structure is located on the top surface, the upper bottom side of the right-angled trapezoidal structure is close to the vertical rod end of the L-shaped structure, and the vertical rod end of the L-shaped structure is connected to the output end of the electric push rod through a tie (3).

4. The tool for converting telescopic movement into durable bending according to claim 3, characterized in that: The booster (2) uses electric push rods arranged at intervals, wherein the two electric push rods are arranged along the hypotenuse of the right-angled trapezoidal structure, and the output ends of the two electric push rods are inclined downward, and the output ends of the two electric push rods are connected to one side end surface of the same baffle.

5. The tool for converting telescopic movement into durable bending according to claim 4, characterized in that: The vertical rod end of the L-shaped structure is connected to the other end face of the baffle via a cable tie (3).

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