Automated testing device for durability of automobile wire harness

Abstract

The present disclosure provides an automatic testing device for automobile wire harness durability, and relates to the field of detection, which comprises a first seat and a second seat for assembling the wire harness to be detected; the first seat can move along a first direction and can be switched between a first position and a second position; the second seat can move along a second direction and can be switched between a third position and a fourth position; the first seat is connected with the second seat through a connecting structure; when the first seat is located at the first position, the second seat is located at the third position; when the first seat is located at the second position, the second seat is located at the fourth position; the distance between the first position and the third position is smaller than the distance between the second position and the fourth position. Through the above structure, the present disclosure improves the problem that the existing testing device mainly causes the wire harness to repeatedly bend and is difficult to simulate the axial stretching state synchronously, thereby resulting in incomplete test results.

Description

Technical Field

[0001] This disclosure relates to the field of testing, and more particularly to an automated testing device for the durability performance of automotive wiring harnesses. Background Technology

[0002] Electric vehicles typically have wiring harnesses for power transmission, signal transmission, and component connections. These harnesses undergo repeated bending and stretching during vehicle movement, steering, vibration, and relative component displacement, necessitating durability testing. Existing testing equipment usually assembles the wiring harness between two clamps and drives one of the clamps to reciprocate, causing periodic deformation of the harness to assess its durability under repeated stress.

[0003] Existing automotive wiring harness durability testing devices typically only use the reciprocating movement of the clamp to repeatedly bend the wiring harness. This lack of simulation of the axial tensile state of the wiring harness during testing makes it difficult for the test results to reflect the durability performance of the wiring harness under the combined effects of bending and axial tension. Specifically, in actual use, electric vehicle wiring harnesses are not only subjected to bending caused by vibration and relative movement of components, but may also experience a certain degree of axial tension due to changes in installation position, limited space, and displacement of connecting components. However, existing devices typically maintain a constant distance between the two ends of the wiring harness during bending, or only passively change the distance due to the deformation of the wiring harness itself. This makes it difficult to simultaneously apply tensile force during bending, failing to create a combined stress state of bending and tension, and thus failing to fully simulate the actual working conditions of electric vehicle wiring harnesses.

[0004] Therefore, an automated testing device for automotive wiring harness durability is proposed to address the problem that test results are difficult to reflect the durability of wiring harnesses under the combined effects of bending and axial tension. Summary of the Invention

[0005] The purpose of this disclosure is to provide an automated testing device for the durability performance of automotive wiring harnesses, solving the problem that test results are difficult to reflect the durability performance of wiring harnesses under the combined effects of bending and axial tension.

[0006] To achieve this objective, the present disclosure adopts the following technical solution: An automated testing device for the durability performance of automotive wiring harnesses includes a first stand and a second stand, wherein the first stand and the second stand are used to assemble the wiring harness to be tested; The first seat can move along a first direction and can switch between a first position and a second position; the second seat can move along a second direction and can switch between a third position and a fourth position. The first seat is connected to the second seat through a connecting structure. When the first seat is in the first position, the second seat is in the third position; when the first seat is in the second position, the second seat is in the fourth position. The distance between the first position and the third position is less than the distance between the second position and the fourth position.

[0007] Preferably, the first seat is disposed on an assembly plate, the assembly plate is provided with a drive assembly, the assembly plate is provided with a limit rod, the limit rod is inserted into the support frame, and the drive assembly causes the limit rod to reciprocate along a first direction through the assembly plate.

[0008] Preferably, the drive assembly includes a turntable, a connecting column, and a connecting arm. The turntable is connected to the drive unit, the connecting column is disposed on the turntable, the connecting arm is rotatably connected to the connecting column, and the end of the connecting arm away from the connecting column is connected to the mounting plate through a hinge seat.

[0009] Preferably, the second seat is disposed on the movable component, the movable component including a column and a guide structure, the column being disposed on the guide structure, the second seat being disposed on the column, and the guide structure allowing the second seat to move along a second direction via the column; The second structure is connected to the connecting structure via columns.

[0010] Preferably, the guide structure includes a guide rod, a slider, and a connecting plate. Both ends of the guide rod are provided with mounting plates. The slider is slidably connected to the guide rod. The connecting plate is disposed on the slider. The column is disposed on the connecting plate.

[0011] Preferably, a spring is provided between the slider and one of the mounting plates, and the spring is movably fitted on the outside of the guide rod.

[0012] Preferably, the connection structure includes a first assembly arm and a second assembly arm, which are connected by a locking member. The end of the first assembly arm away from the second assembly arm is connected to a first seat via a hinge seat, and the end of the second assembly arm away from the first assembly arm is connected to a second seat via a hinge seat. The relative position between the first assembly arm and the second assembly arm is adjustable.

[0013] Preferably, both the first and second assembly arms have elongated holes, and the locking element is disposed within the elongated holes.

[0014] Preferably, the locking component includes a bolt and a nut, the bolt having two elongated holes, the nut being threaded onto the bolt, and the nut abutting against the first or second assembly arm.

[0015] Preferably, the first seat is provided with a first positioning frame, and the second seat is provided with a second positioning frame. The first positioning frame and the second positioning frame are used to support the wire harness, and the first positioning frame and the second positioning frame are staggered along the second direction.

[0016] Compared with the prior art, this disclosure has the following beneficial effects: This disclosure provides an automated testing device for the durability performance of automotive wiring harnesses. By switching a first mounting bracket between a first and a second position along a first direction, and using a connecting structure to drive a second mounting bracket to correspondingly switch between a third and a fourth position along a second direction, the wiring harness assembled on the first and second mounting brackets undergoes periodic relative displacement. Since the distance between the first and third positions is smaller than the distance between the second and fourth positions, when the wiring harness switches from the first and third positions to the second and fourth positions, the distance between the two mounting parts of the wiring harness increases, causing the wiring harness to bend and stretch to a certain extent. When the first and second mounting brackets return to their original positions, the degree of stretching decreases accordingly. Therefore, the wiring harness can repeatedly form a deformation state combining bending and stretching during continuous testing, ensuring a definite correspondence between each position switch and allowing the change in distance between the two mounting parts of the wiring harness to occur repeatedly. This enables the testing of the durability performance of the wiring harness under the combined effects of bending and stretching, improving upon the problem of existing testing devices that primarily involve repeated bending of the wiring harness and struggle to simultaneously simulate axial stretching, resulting in incomplete test results. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0018] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which this disclosure can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this disclosure can produce, should still fall within the scope of the technical content disclosed herein.

[0019] Figure 1 This is a schematic diagram of the overall structure in an embodiment of this disclosure; Figure 2 This is another overall structural diagram of an embodiment of this disclosure; Figure 3This is a schematic diagram of the overall structure of the driving component in an embodiment of this disclosure; Figure 4 This is a schematic diagram of the connection structure between the connecting plate and the column in an embodiment of this disclosure; Figure 5 This is a schematic diagram of the disassembled structure of the connecting plate and the column in an embodiment of this disclosure; Figure 6 This is a schematic diagram of the overall structure of the connection structure in an embodiment of this disclosure; Figure 7 This is another overall structural diagram of the connection structure in an embodiment of this disclosure; Figure 8 This is a schematic diagram of the disassembled structure of the first assembly arm and the second assembly arm in an embodiment of this disclosure.

[0020] Illustrations: 100, First seat; 110, First position; 120, Second position; 130, Assembly plate; 140, Limiting rod; 150, Support frame; 160, First positioning frame; 200, Drive assembly; 210, Turntable; 220, Connecting column; 230, Connecting arm; 240, Drive unit; 300, Second seat; 310, Third position; 320, Fourth position; 330, Second positioning frame; 400, Moving assembly; 410, Column; 420, Guide structure; 421, Guide rod; 422, Slider; 423, Connecting plate; 424, Mounting plate; 425, Spring; 500, Connecting structure; 510, First assembly arm; 520, Second assembly arm; 530, Elongated hole; 540, Locking element; 541, Bolt; 542, Nut. Detailed Implementation

[0021] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be more thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art.

[0022] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this disclosure. However, those skilled in the art will recognize that the technical solutions of this disclosure can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this disclosure.

[0023] Example 1: Please see Figure 1-8An automated testing device for the durability performance of automotive wiring harnesses in this embodiment includes a first base 100 and a second base 300, which are used to assemble the wiring harness to be tested. The first seat 100 can move along the first direction and can switch between the first position 110 and the second position 120; the second seat 300 can move along the second direction and can switch between the third position 310 and the fourth position 320. The first seat 100 is connected to the second seat 300 via the connecting structure 500. When the first seat 100 is in the first position 110, the second seat 300 is in the third position 310. When the first seat 100 is in the second position 120, the second seat 300 is in the fourth position 320. The distance between the first position 110 and the third position 310 is less than the distance between the second position 120 and the fourth position 320.

[0024] It should be noted that the first direction is the direction of movement that causes the wire harness to bend and deform, and the second direction is the direction of movement that causes the distance between the two assembly parts of the wire harness to change. The first seat 100 moves along the first direction to initiate the bending process of the wire harness; the second seat 300 moves along the second direction to change the degree of tension of the wire harness during the bending process. The first and second directions need to be able to cooperate to create a deformation state in which the wire harness combines bending and tension.

[0025] In use, the wire harness to be tested is assembled onto the first mount 100 and the second mount 300, with different parts of the wire harness supported by the first mount 100 and the second mount 300 respectively. After the test begins, the first mount 100 switches back and forth between the first position 110 and the second position 120. The connecting structure 500 transmits the displacement of the first mount 100 to the second mount 300, causing the second mount 300 to switch accordingly between the third position 310 and the fourth position 320. When the first mount 100 and the second mount 300 are in the first position 110 and the third position 310, there is a small gap between the two assembled parts of the wire harness. As the first mount 100 and the second mount 300 switch to the second position 120 and the fourth position 320, the gap between the two assembled parts of the wire harness increases. While the wire harness bends due to the relative displacement between the two assembled parts, the portion of the wire harness located between the two assembled parts experiences a certain degree of stretching. After the first mount 100 and the second mount 300 return to their corresponding initial positions, the gap between the two assembled parts decreases, and the degree of stretching of the wire harness decreases accordingly. By repeating the above position switching process, the wire harness is subjected to a combination of bending and stretching deformation in a cyclical manner.

[0026] In the above structure, the first seat 100 and the second seat 300 are connected by the connecting structure 500 to form a related movement, so that the distance between the two assembly parts of the wire harness can change accordingly as the position of the first seat 100 changes. Compared with the test method that only causes the wire harness to bend while the distance between the two assembly parts remains basically unchanged, this embodiment can form additional tensile deformation during the bending process, so that the wire harness experiences periodic changes in the degree of bending and stretching in one reciprocating motion. Since the first position 110 and the third position 310, and the second position 120 and the fourth position 320 respectively form a definite positional correspondence, the change in the distance between the two assembly parts of the wire harness can be repeated in the continuous test process, so that each test cycle has a relatively consistent deformation process, and the durability performance of the wire harness under the combined action of bending and stretching can be tested.

[0027] It is known that existing testing devices primarily involve repeatedly bending automotive wiring harnesses, making it difficult to simultaneously simulate axial tension during bending. This results in test results that do not fully reflect the combined stress conditions of the wiring harness. This embodiment utilizes the correlated movement of the first mount 100 and the second mount 300 to change the distance between the two assembly parts of the wiring harness. When the distance between the two assembly parts increases, the wiring harness experiences tension on top of bending; when the distance between the two assembly parts decreases, the degree of tension in the wiring harness decreases accordingly. Therefore, there is no need to set up separate independent test processes for bending and tension tests of the wiring harness. A combined bending and tension test state can be formed in continuous reciprocating motion, thereby detecting the durability performance of automotive wiring harnesses under combined deformation conditions and improving the problem that existing testing methods only reflect the bending durability performance of the wiring harness, resulting in incomplete test results.

[0028] It should also be noted that the switching of the first seat 100 between the first position 110 and the second position 120 can be achieved by structures well known to those skilled in the art, such as eccentric wheel mechanisms, electric push rods, cylinders, etc., which will not be described in detail in this embodiment.

[0029] It is understood that the distance between the first position 110 and the third position 310, and the distance between the second position 120 and the fourth position 320, refer to the distance between the corresponding parts of the first seat 100 and the second seat 300 used for assembling the wire harness when they are in their respective positions, or the distance that can characterize the spacing between two assembly parts of the wire harness. By comparing the above distances, the degree of stretching of the wire harness under different position combinations can be determined.

[0030] It is worth noting that the connecting structure 500 establishes a defined kinematic relationship between the first mount 100 and the second mount 300, allowing the relative position between the two assembly parts of the wiring harness to change periodically according to a preset relationship. This results in a corresponding increase or decrease in the degree of stretching during the bending process of the wiring harness. This structure helps reduce potential positional misalignment when the first mount 100 and the second mount 300 move independently, ensuring that the spacing changes and deformation processes remain relatively consistent in each test cycle. Simultaneously, the first mount 100 and the second mount 300 move along the first and second directions respectively, enabling the wiring harness to undergo multi-directional relative displacement. Compared to testing methods that only perform bending in a single direction, this increases the deformation patterns of the wiring harness and allows for alternating bending and stretching during the same continuous test, thus more comprehensively reflecting the durability performance of the automotive wiring harness under combined deformation conditions.

[0031] The first positioning frame 160 is provided on the first base 100, and the second positioning frame 330 is provided on the second base 300. The first positioning frame 160 and the second positioning frame 330 are used to support the wire harness. The first positioning frame 160 and the second positioning frame 330 are staggered along the second direction.

[0032] Understandably, the first positioning frame 160 and the second positioning frame 330 are respectively mounted on the first base 100 and the second base 300 to support and limit the arrangement of the wire harness near the two assembly positions, enabling the wire harness to form a stable deformation path as the first base 100 and the second base 300 move. The first positioning frame 160 and the second positioning frame 330 are staggered along the second direction, which allows the wire harness to form a non-collinear support relationship between the two positioning frames. This guides the wire harness to bend when relative displacement occurs between the two assembly parts, and prevents the wire harness from being stretched only in a straight line. This staggered arrangement also helps to limit the bending area and bending direction of the wire harness, reducing the possibility of disordered offset or swaying of the wire harness during testing. It allows the bending and stretching effects to be concentrated in the part of the wire harness located between the first positioning frame 160 and the second positioning frame 330, thereby improving the stability and repeatability of the wire harness deformation process.

[0033] Example 2: The basic content is the same as in Example 1, except that: Please see Figure 1-3 In this embodiment, the first seat 100 is disposed on the assembly plate 130, the assembly plate 130 is provided with a drive assembly 200, and the assembly plate 130 is provided with a limit rod 140. The limit rod 140 is inserted into the support frame 150, and the drive assembly 200 causes the limit rod 140 to reciprocate along the first direction through the assembly plate 130.

[0034] In application, the power output by the drive assembly 200 first acts on the assembly plate 130, and is then transmitted from the assembly plate 130 to the first seat 100, enabling the first seat 100 to continuously perform the position switching required for testing. When the assembly plate 130 moves, the limiting rod 140 undergoes axial displacement relative to the support frame 150, i.e., it moves along a first direction. The support frame 150 guides the assembly plate 130 through its insertion relationship with the limiting rod 140, causing the assembly plate 130 to move primarily along the predetermined first direction. Thus, the movement of the first seat 100 has a clear power source and movement path, and through the connecting structure 500, it drives the second seat 300 to undergo corresponding position changes, providing continuous motion conditions for the wire harness to repeatedly form a combination of bending and stretching deformations.

[0035] In the above structure, the load-bearing function, power transmission function, and movement guidance function of the first seat 100 are respectively achieved by the cooperation between the assembly plate 130, the drive assembly 200, and the limiting rod 140 and the support frame 150. The assembly plate 130 can receive the power output by the drive assembly 200 and move the first seat 100 with it as a whole; the limiting rod 140 and the support frame 150 restrict the assembly plate 130 from deviating from the predetermined path during movement. Therefore, the position switching of the first seat 100 can be repeated in a determined direction, which is beneficial to maintaining the kinematic coordination between the first seat 100 and the second seat 300, so that the wire harness repeatedly forms a combination of bending and stretching deformation.

[0036] Based on the above structure, the drive component 200 provides the motion power, which is transmitted to the first seat 100 through the assembly plate 130, enabling the first seat 100 to repeatedly switch positions. Simultaneously, the limit rod 140 and the support frame 150 guide the movement of the assembly plate 130, preventing the driving force from causing a significant offset of the assembly plate 130 unrelated to the first direction. This ensures that the bending and stretching processes of the wire harness are continuous and provides a relatively stable motion foundation for durability testing under composite deformation conditions.

[0037] Furthermore, the drive assembly 200 includes a turntable 210, a connecting post 220, and a connecting arm 230. The turntable 210 is connected to the drive unit 240. The connecting post 220 is disposed on the turntable 210. The connecting arm 230 is rotatably connected to the connecting post 220. The end of the connecting arm 230 away from the connecting post 220 is connected to the mounting plate 130 through a hinge seat. Specifically, the drive unit 240 is a motor. The rotation centers of the connecting post 220 and the turntable 210 are spaced apart, so that when the connecting post 220 rotates with the turntable 210, it can perform circular motion around the rotation center of the turntable 210, and drive the mounting plate 130 to reciprocate through the connecting arm 230.

[0038] In application, the drive unit 240 drives the turntable 210 to rotate continuously. The connecting column 220, located outside the rotation center of the turntable 210, moves in a circular motion around the rotation center of the turntable 210, causing the connecting arm 230 to rotate relative to the connecting column 220. The other end of the connecting arm 230 is connected to the mounting plate 130 through a hinge seat. Therefore, the positional change of the connecting column 220 is transmitted to the mounting plate 130 via the connecting arm 230. Since the movement path of the mounting plate 130 is limited by the limiting rod 140 and the support frame 150, the force transmitted by the connecting arm 230 causes the mounting plate 130 to move alternately along the first direction, thereby converting the rotation of the drive unit 240 into the reciprocating motion required for the first seat 100 to switch positions.

[0039] In the above structure, the turntable 210, connecting column 220, and connecting arm 230 form a continuous mechanical transmission path, enabling the drive unit 240 to maintain rotation and continuously drive the assembly plate 130 to reciprocate. The rotational connection between the connecting arm 230 and the connecting column 220, and the hinged connection between the connecting arm 230 and the assembly plate 130, can adapt to changes in the posture of the connecting arm 230 as the connecting column 220 rotates with the turntable 210, allowing the rotational displacement of the turntable 210 to be transmitted to the guide-constrained assembly plate 130. This transmission method eliminates the need for the drive unit 240 to directly reciprocate with the assembly plate 130, which is beneficial for arranging the drive unit 240 in a relatively fixed position and for establishing a clear functional division between the power input part and the reciprocating movement part of the device.

[0040] Based on the above structure, the continuous rotation of the turntable 210 generates periodic position changes, which are then transmitted to the assembly plate 130 via the connecting column 220 and connecting arm 230, enabling the first seat 100 to repeatedly complete the corresponding position switching. Thus, the rotational power provided by the drive unit 240 can be converted into the reciprocating power required for position switching, ensuring continuous associated movement between the first seat 100 and the second seat 300, thereby causing the wire harness to repeatedly experience changes in bending and stretching.

[0041] It should be noted that the drive assembly 200 adopts a mechanical transmission form consisting of a turntable 210, a connecting column 220, and a connecting arm 230. In addition to converting the rotation of the drive unit 240 into the reciprocating motion of the assembly plate 130, it also has the advantages of a relatively concentrated transmission structure, fewer parts, and clear assembly relationships, which facilitates the processing, installation, and maintenance of each transmission component. At the same time, the connecting column 220 moves periodically with the turntable 210, so that one reciprocating process of the assembly plate 130 can correspond to the rotation cycle of the turntable 210, which is beneficial to determine the motion cycle of the first seat 100 based on the rotation state of the turntable 210. Furthermore, when the assembly plate 130 approaches the end of the reciprocating stroke, the movement direction of the connecting column 220 gradually changes, and the first directional displacement component transmitted by the connecting column 220 to the assembly plate 130 through the connecting arm 230 changes accordingly, enabling the assembly plate 130 to complete the direction change. This helps to reduce the impact generated by directly switching the linear drive direction, thereby making the position switching process of the first seat 100 smoother.

[0042] Example 3: The basic content is the same as in Example 1, except that: Please see Figure 4-5 In this embodiment, the second seat 300 is disposed on the moving component 400. The moving component 400 includes a column 410 and a guide structure 420. The column 410 is disposed on the guide structure 420, and the second seat 300 is disposed on the column 410. The guide structure 420 can move the second seat 300 along a second direction through the column 410. The second seat 300 is connected to the connecting structure 500 through the column 410.

[0043] During the test, the movement of the first seat 100 is acted upon by the connecting structure 500 on the column 410. The column 410 moves within the path defined by the guide structure 420, causing the second seat 300 to change position along the second direction. Since the second seat 300 moves together with the column 410, the movement of the first seat 100 can be converted into a positional change of the second seat 300 in the second direction via the connecting structure 500, thereby causing the assembly parts of the wire harness and the second seat 300 to move along a predetermined path. Through this movement process, in conjunction with the bending action of the first seat 100 on the wire harness, the relative position between the two assembly parts of the wire harness can be changed, causing the wire harness to undergo corresponding tensile deformation during the bending process.

[0044] In the above structure, the movable component 400 provides a support and guiding foundation for the second seat 300 to move along the second direction. The column 410 establishes the connection between the second seat 300, the connecting structure 500, and the guiding structure 420, while the guiding structure 420 defines the movement path of the second seat 300. This structure enables the motion transmitted by the connecting structure 500 to cause displacement of the second seat 300 in the second direction, reducing the possibility of unintended deviations in other directions and ensuring that the positional changes of the second seat 300 correspond to the movement of the first seat 100.

[0045] Based on the above structure, by using the second, guided, and constrained mount 300 to change the position of the corresponding assembly parts of the wire harness, the distance between the two assembly parts of the wire harness can change during the testing process. Thus, the wire harness can generate a certain degree of tension while bending, making the testing process include a deformation state combining bending and tension. Simultaneously, the second mount 300 moves along a defined path, which helps to repeat the above-mentioned composite deformation according to a relatively stable motion relationship, avoiding the problem of difficulty in simultaneously generating axial tension when bending the wire harness.

[0046] Furthermore, the guide structure 420 includes a guide rod 421, a slider 422, and a connecting plate 423. Both ends of the guide rod 421 are provided with mounting plates 424. The slider 422 is slidably connected to the guide rod 421. The connecting plate 423 is provided on the slider 422, and the column 410 is provided on the connecting plate 423.

[0047] In application, when the connecting structure 500 moves the column 410, the column 410, through the connecting plate 423, drives the slider 422 to move along the guide rod 421. The second seat 300 changes position together with the column 410, the connecting plate 423, and the slider 422. The guide rod 421 defines the movement trajectory of the slider 422, while the connecting plate 423 transmits the action between the slider 422 and the column 410, ensuring that the movement direction of the second seat 300 corresponds to the extension direction of the guide rod 421. The mounting plates 424 at both ends of the guide rod 421 maintain the mounting position of the guide rod 421 and form supports at both ends of the guide rod 421, allowing the slider 422 to move along the guide rod 421 between the two mounting plates 424.

[0048] In the above structure, the sliding engagement between the guide rod 421 and the slider 422 establishes the movement of the second seat 300 on a defined linear guiding relationship, enabling the second seat 300 to change position along the second direction when subjected to the action of the connecting structure 500. The connecting plate 423 provides an installation base for the column 410 and transmits the action on the column 410 to the slider 422, so that the column 410 does not need to directly engage with the guide rod 421. Through the above structure, the support, connection, and guiding functions of the second seat 300 are respectively undertaken by the column 410, the connecting plate 423, and the engagement of the guide rod 421 and the slider 422, which facilitates maintaining the assembly relationship between the components and reduces the possibility of the second seat 300 deflecting during movement.

[0049] Based on the above structure, the movement path of the second seat 300 is defined by the cooperation of the guide rod 421 and the slider 422. When the second seat 300 moves along the guide rod 421 with the slider 422, the corresponding wire harness assembly part can change position in the second direction. This gives the change in the distance between the two assembly parts of the wire harness a clear movement path, which helps to maintain the repeatability of the bending and stretching composite test process and reduces the possibility of the wire harness stretching degree deviating from the predetermined change relationship due to the deviation of the movement trajectory of the second seat 300.

[0050] Furthermore, a spring 425 is provided between the slider 422 and one of the mounting plates 424, and the spring 425 is movably fitted on the outside of the guide rod 421.

[0051] Specifically, when the second seat 300 is in the third position 310, the spring 425 is in its normal state; when the second seat 300 is in the fourth position 320, the spring 425 is in its contracted state.

[0052] In application, when the second seat 300 is in the third position 310, the slider 422 is in the state corresponding to that position, and the spring 425 is in its normal state. When the second seat 300 switches from the third position 310 to the fourth position 320, the slider 422 moves along the guide rod 421 with the second seat 300 and gradually approaches the mounting plate 424 on the side where the spring 425 is located, causing the spring 425 to be compressed. When the second seat 300 reaches the fourth position 320, the spring 425 is in a contracted state and stores elastic potential energy. When the second seat 300 returns from the fourth position 320 to the third position 310, the spring 425 gradually returns from the contracted state to its normal state and applies an elastic force towards the third position 310 to the slider 422. This elastic force is transmitted to the second seat 300 through the connecting plate 423 and the column 410, thereby assisting the second seat 300 in completing the position switching.

[0053] In the above structure, the spring 425 can store elastic potential energy by utilizing the displacement generated when the second seat 300 switches from the third position 310 to the fourth position 320, and release the elastic potential energy when the second seat 300 switches in the opposite direction. This allows the second seat 300 to obtain an auxiliary effect adapted to the return direction during its return from the fourth position 320 to the third position 310. Therefore, the effect required by the connecting structure 500 to drive the second seat 300 back is reduced, and the occurrence of the second seat 300 failing to return smoothly to the third position 310 due to motion resistance is decreased. The spring 425 is movably fitted onto the outside of the guide rod 421, which also limits the extension and retraction direction of the spring 425, reducing lateral displacement of the spring 425 during compression and recovery.

[0054] Based on the above structure, a spring 425 is provided between the slider 422 and the mounting plate 424. The spring 425 is pre-contracted during the movement of the second seat 300 to the fourth position 320 and provides elastic force when the second seat 300 returns to the third position 310. This elastic force corresponds to the return direction of the second seat 300 and can assist the driving action of the connecting structure 500, thereby facilitating the smooth switching of the second seat 300 from the fourth position 320 to the third position 310 and maintaining the continuity of the wire harness cyclic testing process. This improves the problem of the second seat 300 being affected by the frictional resistance of the moving component 400, the reaction force generated by the wire harness, and the motion resistance of related components when switching from the fourth position 320 to the third position 310.

[0055] Example 4: The basic content is the same as in Example 1, except that: Please see Figure 6-8 In this embodiment, the connection structure 500 includes a first assembly arm 510 and a second assembly arm 520. The first assembly arm 510 and the second assembly arm 520 are connected by a locking member 540. The end of the first assembly arm 510 away from the second assembly arm 520 is connected to the first seat 100 through a hinge seat. The end of the second assembly arm 520 away from the first assembly arm 510 is connected to the second seat 300 through a hinge seat. The relative position between the first assembly arm 510 and the second assembly arm 520 is adjustable.

[0056] Before testing, the relative positions of the first assembly arm 510 and the second assembly arm 520 can be adjusted according to the initial arrangement of the first seat 100 and the second seat 300. After adjustment, the locking member 540 is used to maintain their relative positions. During testing, the motion generated by the first seat 100 is transmitted to the second seat 300 through the first assembly arm 510, the locking member 540, and the second assembly arm 520, causing the second seat 300 to switch positions according to the adjusted connection relationship. The two ends of the first assembly arm 510 and the second assembly arm 520 are hinged to the first seat 100 and the second seat 300 respectively, so that the connecting structure 500 can rotate relative to the first seat 100 and the second seat 300 during the transmission of motion to adapt to the posture changes formed when the first seat 100 and the second seat 300 move in different directions.

[0057] In the above structure, the relative position between the first assembly arm 510 and the second assembly arm 520 is adjustable, allowing the transmission relationship formed between the connecting structure 500 and the first seat 100 and the second seat 300 to be set before testing, thereby adjusting the range of positional change of the second seat 300 as it moves with the first seat 100. Through the hinged connection at both ends of the first assembly arm 510 and the second assembly arm 520, the connecting structure 500 can change its posture when the first seat 100 and the second seat 300 move relative to each other, reducing the possibility of motion constraints caused by different directions of movement. Simultaneously, the first assembly arm 510 and the second assembly arm 520 are designed as separate units, allowing for positional adjustments while retaining the original connecting components, without requiring a complete replacement of the connecting structure 500 for different initial arrangements.

[0058] Based on the above structure, the motion transmission relationship between the first mounting arm 510 and the second mounting arm 520 is adjusted by changing the relative position between them. After adjustment, the locking member 540 maintains the relative state of the first mounting arm 510 and the second mounting arm 520, allowing the second mounting arm 300 to move in coordination with the first mounting arm 100 according to the set connection relationship. This provides adjustable structural conditions for the wire harness to form corresponding tensile deformation during bending.

[0059] It is worth noting that the relative position between the first assembly arm 510 and the second assembly arm 520 is adjustable, which is used to change the effective connection length of the connecting structure 500 between the first seat 100 and the second seat 300, thereby adjusting the positional change relationship of the second seat 300 when the first seat 100 moves. By setting the relative position of the two assembly arms before testing, the connecting structure 500 can be adapted to the initial assembly state of the wire harness, and the second seat 300 can move in coordination with the first seat 100 according to the set motion relationship, so as to adjust the spacing change between the two assembly parts of the wire harness and the resulting degree of tension. After the adjustment is completed, the two assembly arms maintain their relative position through the locking member 540, so that the connecting structure 500 can transmit the motion action according to the adjusted state.

[0060] It should be noted that the locking member 540 can be implemented using a structure well known to those skilled in the art that allows the first assembly arm 510 and the second assembly arm 520 to adjust relative to each other when unlocked and restricts their relative movement after locking, such as a quick clamping member or a positioning pin assembly, etc. This embodiment will not be described in detail.

[0061] Furthermore, both the first assembly arm 510 and the second assembly arm 520 are provided with elongated holes 530, and the locking member 540 is disposed in the elongated holes 530.

[0062] When adjusting the connecting structure 500, first release the locking member 540 from restricting the first mounting arm 510 and the second mounting arm 520, allowing them to move relative to each other along the extension direction of the elongated hole 530. As the first mounting arm 510 and the second mounting arm 520 move relative to each other, the locking member 540 changes position within the two elongated holes 530, causing a change in the connection position between the first mounting arm 510 and the second mounting arm 520. After reaching the desired relative position, the locking member 540 is used again to restrict the relative movement of the two mounting arms, maintaining the connecting structure 500 in the adjusted state and transmitting the motion between the first seat 100 and the second seat 300 during testing.

[0063] In the above structure, the elongated hole 530 provides space for the locking member 540 to change position along its extension direction, allowing the relative position of the first mounting arm 510 and the second mounting arm 520 to be adjusted within the range allowed by the elongated hole 530, without being limited by the position of the fixed connection hole. The locking member 540, disposed within the two elongated holes 530, not only serves to connect the first mounting arm 510 and the second mounting arm 520, but also cooperates with the elongated holes 530 to complete relative position adjustments, thereby reducing the need for a separate telescopic guide member. Furthermore, the elongated hole 530 defines the adjustment path of the locking member 540 and the two mounting arms, giving the adjustment process a clear direction and range.

[0064] Based on the above structure, by utilizing the elongated hole 530 to provide a certain range of relative movement space for the first assembly arm 510 and the second assembly arm 520, the connection position can be adjusted according to the actual assembly relationship. By restricting the movement of the locking member 540 at the required position, the adjusted motion transmission relationship can be maintained during the test, thereby adjusting the spacing change between the two assembly parts of the wire harness and matching the stretching degree of the wire harness with its bending process.

[0065] Furthermore, the locking element 540 includes a bolt 541 and a nut 542. The bolt 541 passes through two elongated holes 530, and the nut 542 is threaded onto the bolt 541, abutting against either the first mounting arm 510 or the second mounting arm 520. Specifically, when the first mounting arm 510 and the second mounting arm 520 are assembled, the two elongated holes 530 at least partially overlap, and within the adjustment range, there remains an overlapping area through which the locking element 540 can pass. The head of the bolt 541 is located on the outside of one of the first mounting arm 510 and the second mounting arm 520, and the nut 542 is located on the outside of the other. When the nut 542 is tightened, the head of the bolt 541 and the nut 542 act on the opposite sides of the first mounting arm 510 and the second mounting arm 520, respectively, to clamp the first mounting arm 510 and the second mounting arm 520.

[0066] During adjustment, loosen nut 542 to reduce its abutment against the first mounting arm 510 or the second mounting arm 520, allowing bolt 541 to change position within the elongated hole 530 as the two mounting arms move relative to each other. After the first mounting arm 510 and the second mounting arm 520 are adjusted to the desired relative position, tighten nut 542 so that it abuts against the corresponding first mounting arm 510 or second mounting arm 520. The threaded engagement between bolt 541 and nut 542 clamps the first mounting arm 510 and the second mounting arm 520, thereby restricting further relative movement. When further adjustment is needed, loosen nut 542 to release this clamping action.

[0067] In the above structure, the engagement of bolt 541 and nut 542 allows the connection between the first assembly arm 510 and the second assembly arm 520 to switch between an adjustable state and a locked state. When nut 542 is loosened, bolt 541 can be adjusted without being removed from the elongated hole 530; when nut 542 is tightened, the clamping action on the two assembly arms restricts their relative displacement, allowing the connection structure 500 to transmit motion according to the adjusted state. This connection method is a detachable connection, facilitating the assembly, readjustment, and component replacement of the connection structure 500.

[0068] Based on the above structure, a releasable clamping restriction is formed by bolts 541 and nuts 542; the clamping effect is released during adjustment and restored after adjustment, so that the first assembly arm 510 and the second assembly arm 520 can have both position adjustability and position retention capability after adjustment, thereby enabling the second seat 300 to switch positions according to a preset motion relationship.

[0069] It is worth noting that when bolt 541 and nut 542 are used as locking elements 540, with nut 542 loosened, bolt 541 can move along the elongated hole 530 on the first mounting arm 510 and the second mounting arm 520, allowing the first mounting arm 510 and the second mounting arm 520 to continuously change their relative positions within the allowable range of the elongated hole 530, without being restricted by the fixed hole position. Thus, according to the initial arrangement of the first seat 100 and the second seat 300 and the required tension of the wire harness, the connecting structure 500 can be adjusted to the corresponding position within the continuous adjustment range allowed by both elongated holes 530. After the adjustment is completed, by tightening nut 542, nut 542 abuts against the corresponding mounting arm, and the clamping effect generated by bolt 541 and nut 542 restricts the two mounting arms from continuing to move relative to each other, so as to maintain the set connection state. Thus, bolt 541 and nut 542 can not only cooperate with the elongated hole 530 to achieve stepless adjustment of the connection position, but also form a releasable lock after adjustment, so that the same connection structure 500 can adapt to different initial assembly spacing and motion transmission requirements between the first seat 100 and the second seat 300, and facilitate the corresponding adjustment of the degree of stretching generated during the bending of the wire harness; at the same time, it is not necessary to completely remove bolt 541 during adjustment, which simplifies the repeated adjustment process, and bolt 541 and nut 542 are commonly used standard parts, which are easy to assemble, replace and maintain.

[0070] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0071] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. An automated testing device for the durability performance of automotive wiring harnesses, characterized in that, It includes a first seat (100) and a second seat (300), which are used to assemble the wire harness to be tested; The first seat (100) is movable along a first direction and can switch between a first position (110) and a second position (120); the second seat (300) is movable along a second direction and can switch between a third position (310) and a fourth position (320); The first seat (100) is connected to the second seat (300) through a connecting structure (500). When the first seat (100) is in the first position (110), the second seat (300) is in the third position (310). When the first seat (100) is in the second position (120), the second seat (300) is in the fourth position (320). The distance between the first position (110) and the third position (310) is less than the distance between the second position (120) and the fourth position (320).

2. The automated testing device for automotive wiring harness durability performance according to claim 1, characterized in that, The first seat (100) is disposed on the assembly plate (130), the assembly plate (130) is provided with a drive assembly (200), the assembly plate (130) is provided with a limit rod (140), the limit rod (140) is inserted into the support frame (150), and the drive assembly (200) causes the limit rod (140) to reciprocate along the first direction through the assembly plate (130).

3. The automated testing device for automotive wiring harness durability performance according to claim 2, characterized in that, The drive assembly (200) includes a turntable (210), a connecting post (220), and a connecting arm (230). The turntable (210) is connected to the drive unit (240). The connecting post (220) is disposed on the turntable (210). The connecting arm (230) is rotatably connected to the connecting post (220). One end of the connecting arm (230) away from the connecting post (220) is connected to the mounting plate (130) through a hinge seat.

4. The automated testing device for the durability performance of automotive wiring harnesses according to claim 1, characterized in that, The second seat (300) is disposed on the moving component (400), which includes a column (410) and a guide structure (420). The column (410) is disposed on the guide structure (420), and the second seat (300) is disposed on the column (410). The guide structure (420) can move the second seat (300) along a second direction through the column (410). The second seat (300) is connected to the connecting structure (500) via a column (410).

5. The automated testing device for automotive wiring harness durability performance according to claim 4, characterized in that, The guide structure (420) includes a guide rod (421), a slider (422), and a connecting plate (423). Both ends of the guide rod (421) are provided with mounting plates (424). The slider (422) is slidably connected to the guide rod (421). The connecting plate (423) is provided on the slider (422). The column (410) is provided on the connecting plate (423).

6. The automated testing device for automotive wiring harness durability performance according to claim 5, characterized in that, A spring (425) is provided between the slider (422) and one of the mounting plates (424), and the spring (425) is movably fitted on the outside of the guide rod (421).

7. The automated testing device for the durability performance of automotive wiring harnesses according to claim 1, characterized in that, The connection structure (500) includes a first assembly arm (510) and a second assembly arm (520), which are connected by a locking member (540). The end of the first assembly arm (510) away from the second assembly arm (520) is connected to a first seat (100) via a hinge seat. The end of the second assembly arm (520) away from the first assembly arm (510) is connected to a second seat (300) via a hinge seat. The relative position between the first assembly arm (510) and the second assembly arm (520) is adjustable.

8. The automated testing device for the durability performance of automotive wiring harnesses according to claim 7, characterized in that, Both the first assembly arm (510) and the second assembly arm (520) are provided with elongated holes (530), and the locking member (540) is disposed in the elongated holes (530).

9. The automated testing device for the durability performance of automotive wiring harnesses according to claim 8, characterized in that, The locking component (540) includes a bolt (541) and a nut (542). The bolt (541) has two elongated holes (530) through it. The nut (542) is threaded onto the bolt (541) and abuts against the first assembly arm (510) or the second assembly arm (520).

10. The automated testing device for the durability performance of automotive wiring harnesses according to claim 1, characterized in that, The first seat (100) is provided with a first positioning frame (160), and the second seat (300) is provided with a second positioning frame (330). The first positioning frame (160) and the second positioning frame (330) are used to support the wire harness. The first positioning frame (160) and the second positioning frame (330) are staggered along the second direction.

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