Automobile wire harness stretching test tool

Abstract

The utility model discloses an automobile wire harness stretching test tool, and belongs to the technical field of stretching test. The device mainly comprises a frame body; the stretching mechanism is mounted in the frame body; the adjusting assembly is installed at the lower end in the frame body, the adjusting assembly is provided with a sliding block, and the adjusting assembly further comprises an arc-shaped plate installed at the upper end of the sliding block; the sliding groove is formed in the arc-shaped plate; the sliding block is mounted in the sliding groove; the mounting plate is mounted on the sliding block; the locking bolt is mounted on the mounting plate; and the pressing part is mounted on the mounting plate. According to the automobile wire harness tensile test tool, by arranging the adjusting assembly, the effect of adjusting the angle and the position of the automobile wire harness is achieved.

Description

Technical Field

[0001] This application relates to the field of tensile testing technology, specifically to a tensile testing fixture for automotive wiring harnesses. Background Technology

[0002] Automotive wiring harnesses are components that connect circuits by crimping copper contact terminals (connectors) to wires and cables, then molding an insulator or adding an outer metal shell, and bundling the wires together. They mainly consist of cables, sheathing materials, and connectors (terminals).

[0003] The main purpose of automotive wiring harness tensile testing is to apply gradually increasing tensile force to the terminals using a tensile testing machine until the terminals detach from the wiring harness. This measures the strength of the connection between the terminals and the wiring harness and the maximum force required for detachment. This helps ensure that the wiring harness can withstand the expected mechanical stress during vehicle use, thereby maintaining the reliability of the electrical connection.

[0004] For example, patent CN220455029U discloses a wire harness tensile testing fixture. This patent connects the folded part of the automotive wire harness to a hook, and the two ends of the automotive wire harness are clamped and fixed. Through the operation of a motor, the rotating shaft can drive the connecting plate to move up and down, adjusting the tensile distance of the automotive wire harness. By adjusting the rotation speed of the rotating shaft, the tensile speed can be adjusted, thereby enabling tensile performance testing of the automotive wire harness at different tensile speeds and different tensile distances. Furthermore, the highest tensile point of the automotive wire harness can be visually viewed through a force measuring instrument.

[0005] Typically, when performing tensile tests on automotive wiring harnesses, the harness is stretched directly. This testing method and the scenarios it addresses are relatively simple. When a car is in motion, it encounters bumpy roads, sharp turns, acceleration, and deceleration. These dynamic changes cause the relative positions of various vehicle components to change, thereby generating tensile forces on the wiring harness. These tensile forces may come from different directions, so it is necessary to perform multi-angle tensile tests on the wiring harness. If only a single test is performed, it is impossible to fully understand the performance of the wiring harness under different stress conditions, and it is impossible to make a comprehensive and accurate assessment of its performance.

[0006] Therefore, it is necessary to provide a tensile testing fixture for automotive wiring harnesses to solve the above problems.

[0007] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Summary of the Invention

[0008] Based on the aforementioned problems in the existing technology, the problem to be solved by this application is to provide an automotive wiring harness tensile testing fixture, which solves the problem that a single test cannot fully understand the performance of the wiring harness under different stress conditions and cannot make a comprehensive and accurate evaluation of its performance.

[0009] The technical solution adopted by this application to solve its technical problem is: a tensile testing fixture for automotive wiring harnesses, comprising:

[0010] Frame;

[0011] A stretching mechanism, installed inside the frame, is used for stretching automotive wiring harnesses.

[0012] An adjustment assembly, installed inside the lower end of the frame, is used to adjust the angle during stretching. The adjustment assembly includes a slider and further comprises:

[0013] An arc-shaped plate is mounted on the upper end of the slider;

[0014] A groove is formed in the arc-shaped plate;

[0015] A sliding block, which is installed in the groove;

[0016] Mounting plate, which is mounted on the sliding block;

[0017] A locking bolt, which is mounted on the mounting plate;

[0018] A pressing part, which is mounted on the mounting plate.

[0019] Furthermore, a protective shell is hinged to the outside of the frame, and the protective shell is transparent.

[0020] Furthermore, the tensioning mechanism includes two sets of screws rotatably disposed inside the frame, with sprockets fixedly disposed at the bottom end of each screw, and a chain drivingly connecting the two sets of sprockets. A motor is fixedly disposed at the bottom end of one set of screws, and the output end of the motor is fixedly connected to one set of screws.

[0021] Furthermore, the two sets of screws are threadedly connected to a fixing plate, a sensor is fixedly installed at the middle position of the fixing plate, a fixing part is fixedly installed at one end of the sensor, and an installation groove is opened on the fixing part.

[0022] Furthermore, an adjustment component is fixedly installed at the lower end of the frame, and multiple sets of threaded holes are opened on the arc plate. The pressing part includes two sets of base plates fixedly installed on the mounting plate. A pressure plate is provided on the base plate. Threaded holes are opened on the base plate and the pressure plate respectively. Screws are threaded into the threaded holes on the base plate and the pressure plate.

[0023] The beneficial effects of this application are: the automotive wiring harness tensile testing fixture provided by this application achieves the effect of adjusting the angle and position of the automotive wiring harness by setting adjustment components.

[0024] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0025] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0026] Figure 1 This is a schematic diagram of an automotive wiring harness tensile testing fixture according to this application.

[0027] Figure 2 This is a partial schematic diagram of a tensile testing fixture for automotive wiring harnesses according to this application;

[0028] Figure 3 for Figure 2 A schematic diagram of the tensioning mechanism;

[0029] Figure 4 for Figure 2 A schematic diagram of the adjustment components;

[0030] Figure 5 for Figure 2 A partial exploded view of the adjustment component;

[0031] Figure 6 for Figure 5 A schematic diagram of A in the middle;

[0032] The following are the labeling elements in the figure:

[0033] 1. Protective shell; 2. Frame; 3. Tensioning mechanism; 30. Motor; 31. Sprocket; 32. Chain; 34. Screw; 35. Fixing plate; 36. Sensor; 37. Fixing part; 38. Adjustment assembly; 380. Transmission unit; 381. Slider; 382. Arc plate; 383. Slide groove; 384. Sliding block; 385. Mounting plate; 386. Locking bolt; 387. Pressing part; 388. Base plate; 389. Pressure plate. Detailed Implementation

[0034] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0035] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0036] like Figures 1-3 As shown, this application provides a tensile testing fixture for automotive wiring harnesses, including a frame 2 and a protective shell 1 hinged to the outside of the frame 2. The protective shell 1 is transparent so that the tensile condition can be observed while providing a certain degree of safety protection. In order to smoothly perform tensile operations on automotive wiring harnesses, a tensile mechanism 3 is provided inside the frame 2.

[0037] The tensioning mechanism 3 includes two sets of screws 34 rotatably disposed inside the frame 2. A sprocket 31 is fixedly disposed at the bottom end of the screws 34, and a chain 32 is connected between the two sets of sprockets 31. A motor 30 is fixedly disposed at the bottom end of one set of screws 34, and the output end of the motor 30 is fixedly connected to one set of screws 34, so that the motor 30 can be started to drive the two sets of screws 34 to rotate inside the protective shell 1 through the two sets of sprockets 31 and the chain 32.

[0038] Meanwhile, a fixing plate 35 is threadedly connected to the two sets of screws 34, so that the fixing plate 35 can move vertically up and down under the rotation of the two sets of screws 34. A sensor 36 is fixedly installed in the middle of the fixing plate 35, and a fixing part 37 is fixedly installed at one end of the sensor 36. The fixing part 37 has a mounting groove (not shown in the figure) for inserting one end of the automotive wiring harness, so that subsequent tensile tests can be carried out smoothly.

[0039] like Figures 1-3As shown, in order to simulate the stretching state of the car wiring harness under different driving conditions, and thus achieve the stretching test of the car wiring harness at different angles, an adjustment component 38 is provided at the lower end of the frame 2 below the fixing part 37. The adjustment component 38 includes a transmission unit 380 provided at the lower end of the frame 2. The transmission unit 380 adopts a screw transmission mechanism commonly used in the prior art and applicable to this embodiment. At the same time, the transmission unit 380 has a slider 381, so that the slider 381 can perform linear reciprocating motion under the drive of the transmission unit 380.

[0040] In order to smoothly adjust the angle, such as Figures 1-2 and Figures 5-6 As shown, an arc plate 382 is fixedly mounted on the slider 381, and a groove 383 is provided on the arc plate 382. A sliding block 384 is slidably mounted on the groove 383, and a mounting plate 385 is fixedly mounted on the sliding block 384, so that the operator can push the mounting plate 385 to move along the groove 383.

[0041] In order to position the mounting plate 385, multiple sets of threaded holes are provided on the arc plate 382, ​​and a locking bolt 386 is threadedly connected to one side of the mounting plate 385. The locking bolt 386 passes through the mounting plate 385 and is threadedly connected to the threaded hole on the arc plate 382. Thus, when the operator pushes the mounting plate 385 to the appropriate position, it can be positioned and used by the locking bolt 386.

[0042] Meanwhile, in order to facilitate the stretching operation, a pressing part 387 is fixedly provided on the mounting plate 385. The pressing part 387 includes two sets of base plates 388 fixedly provided on the mounting plate 385, and a pressure plate 389 is provided on the base plate 388. Threaded holes are opened on the base plate 388 and the pressure plate 389 respectively, and screws are threaded on the threaded holes to fix the pressure plate 389 and the base plate 388 with screws. When the screws are turned, the pressure plate 389 and the base plate 388 can be separated. Then, before the stretching test, the other end of the automotive wiring harness can be passed between the pressure plate 389 and the base plate 388 and fixed with screws to facilitate the stretching operation.

[0043] Before the stretching operation begins, first open the protective shell 1, insert one end of the automotive wiring harness into the mounting groove of the fixing part 37, and then pass the other end through the pressure plate 389 and the base plate 388, and then fix it by rotating the screw.

[0044] Then, after closing the protective shell 1, the motor 30 can be started to drive the fixing plate 35 to move vertically upward along the screw 34, thereby achieving the effect of stretching the automotive wiring harness. At this time, the transmission unit 380 can be started to drive the arc plate 382 to perform linear reciprocating motion, thereby simulating the stretching state of the automotive wiring harness under different driving conditions.

[0045] If it is necessary to adjust the angle and position of the automotive wiring harness, the protective cover 1 can be opened again, and then the mounting plate 385 can be pushed along the slide 383 until it is moved to the appropriate position. Then, it can be fixed by locking bolt 386. After that, the protective cover 1 can be closed for testing. Finally, the data can be transmitted through the sensor 36 to achieve the purpose of adjusting the angle and position of the automotive wiring harness.

[0046] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An automotive wiring harness stretch test fixture, characterized by: Include: Frame (2); Stretching mechanism (3), the stretching mechanism (3) is installed inside the frame (2), the stretching mechanism (3) is used for stretching operation to automobile wiring harness; Adjustment assembly (38), the adjustment assembly (38) is installed inside the lower end of the frame (2), the adjustment assembly (38) is used for adjusting angle in the stretching process, the adjustment assembly (38) has a slider (381), the adjustment assembly (38) further comprises: Arc plate (382), the arc plate (382) is installed on the upper end of the slider (381); Slide groove (383), the slide groove (383) is opened in the arc plate (382); Sliding block (384), the sliding block (384) is installed in the slide groove (383); Mounting plate (385), the mounting plate (385) is installed on the sliding block (384); Locking bolt (386), the locking bolt (386) is installed on the mounting plate (385); Pressing part (387), the pressing part (387) is installed on the mounting plate (385).

2. The stretch test tooling for automotive wiring harnesses of claim 1, wherein: The frame (2) outside is hinged with a protective shell (1), the protective shell (1) is transparent.

3. The stretch test tooling for automotive wiring harnesses of claim 1, wherein: The stretching mechanism (3) includes two groups of screw rods (34) rotatably arranged inside the frame (2), the bottom end of the screw rod (34) is fixedly provided with a chain wheel (31), two groups of chain wheels (31) are transmissionally connected with a chain (32), one group of screw rods (34) is fixedly provided with a motor (30) at the bottom end, and the output end of the motor (30) is fixedly connected with one group of screw rods (34).

4. The stretch test tooling for automotive wiring harnesses of claim 3, wherein: Two groups of screw rods (34) are threadedly connected with a fixed plate (35), the middle position of the fixed plate (35) is fixedly provided with a sensor (36), one end of the sensor (36) is fixedly provided with a fixed part (37), and the fixed part (37) is provided with a mounting groove.

5. The stretch test tooling for automotive wiring harnesses of claim 1, wherein: The adjustment assembly (38) is fixedly arranged inside the lower end of the frame (2), a plurality of threaded holes are formed in the arc plate (382), the pressing part (387) includes two groups of bottom plates (388) fixedly arranged on the mounting plate (385), the bottom plate (388) is provided with a pressing plate (389), the bottom plate (388) and the pressing plate (389) are provided with threaded holes, and the threaded holes in the bottom plate (388) and the pressing plate (389) are threadedly provided with screws.

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