New energy automobile wire harness reliability test device

Abstract

The utility model relates to the technical field of new energy automobile wire harness detection, in particular to a new energy automobile wire harness reliability test device, which comprises a test bench and a fixed strip fixedly arranged on the test bench, the new energy automobile wire harness reliability test device further comprises a plug-in shaft arranged on the support frame, a wire harness arranged between the movable strip and the fixed strip, a connecting seat slidably arranged on the test bench, and a connecting rod arranged on the connecting seat. The plug-in shaft is detachably arranged between one end of the movable strip and the support frame. And the telescopic cylinder is fixedly arranged at the top of the test bed. When high-frequency opening and closing actions of a vehicle door are simulated, one end of the wire harness can be fixed, the other end of the wire harness can synchronously deflect along with the movable strip, the bending point of the wire harness only changes in a reciprocating mode in a very small range, test detection data are closer to actual conditions, and errors of the test data are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to new energy automobile wire harness detection technical field especially relates to a new energy automobile wire harness reliability test device. BACKGROUND

[0002] The automobile wire harness is the main body of the automobile circuit. The automobile wire harness is the contact terminal that is pressed in copper material stamping at the wire cable end, then the wire harness is tied to form the connecting circuit after the external plastic pressure insulator or the additional metal shell of the contact terminal. The wire harness on the automobile seat and the door will appear the U-shaped end length change bending action and the L-shaped swing bending action of high frequency respectively. The existing wire harness reliability test device is difficult to continuously carry out the above two bending action tests after fixing the wire harness end.

[0003] To solve the above technical problem, patent application number 202411003063.2 discloses a new energy automobile wire harness reliability multifunctional test device. The device can make the wire harness in the U-shaped state under the premise that the wire harness is not disassembled after fixing both ends of the wire harness, one end of the wire harness is fixed, and the other end reciprocates linearly, simulates the influence of high frequency movement of the automobile seat on the wire harness on-off, or makes the wire harness in the L-shaped state, one end of the wire harness reciprocates linearly, and the other end reciprocates swing, simulates the influence of high frequency opening and closing action of the automobile door on the wire harness on-off, realizes the simulation test of two use conditions continuously without disassembling the wire harness. In the above prior art, the device makes one end of the wire harness linear reciprocating motion, and the other end reciprocating swing, so that the bending point position change range of the wire harness in the simulation action is much larger than the bending point position change range of the wire harness when the door is actually opened and closed, resulting in large experimental data error. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model aims at providing a new energy automobile wire harness reliability test device to solve the problem that the bending point position change range of the wire harness in the simulation action is much larger than the bending point position change range of the wire harness when the door is actually opened and closed, resulting in large experimental data error.

[0005] Based on the above purpose, the utility model provides a new energy automobile wire harness reliability test device, which comprises a test table and a fixed strip fixed on the test table, an activity strip is arranged on the test table, and the new energy automobile wire harness reliability test device further comprises:

[0006] A support frame fixed on the test table.

[0007] A plug-in shaft arranged on the support frame, which is detachably installed between one end of the activity strip and the support frame.

[0008] A wire harness is arranged between the movable strip and the fixed strip.

[0009] A connecting seat is slidably arranged on the test bench.

[0010] A telescopic cylinder is fixedly arranged on the top of the test bench, and is used to linearly push the connecting seat to reciprocally linearly move.

[0011] A sliding connecting piece is detachably arranged between the connecting seat and the movable strip, and is used to assist the wire harness to simulate a high-frequency reciprocating deflection experiment.

[0012] A vibrating piece is detachably arranged on the top of the test bench, and is used to assist the wire harness to simulate a high-frequency vibration experiment.

[0013] A fixed connecting piece is detachably arranged between the top of the connecting seat and the movable strip, and is used to assist the wire harness to simulate a high-frequency reciprocating motion experiment.

[0014] Preferably, the initial wire arrangement shape of the wire harness is U-shaped, and the bending part of the wire harness is located between the movable strip and the fixed strip and close to one end of the support frame.

[0015] Preferably, the connecting seat and the telescopic cylinder are both located between the movable strip and the fixed strip, and two opposite vertical faces of the connecting seat are respectively attached to opposite faces of the movable strip and the fixed strip.

[0016] Preferably, the fixed connecting piece comprises a connecting block fixedly arranged on one vertical face of the movable strip, a vertical insertion hole is arranged between the top and the bottom of the connecting block, a connecting insertion rod is rotatably sleeved in the vertical insertion hole, and the bottom end of the connecting insertion rod is threadedly sleeved with a vertical screw hole arranged on the top of the connecting seat.

[0017] Preferably, the sliding connecting piece comprises a guide sliding groove transversely arranged on one vertical face of the movable strip, a convex head connecting rod is slidably sleeved in the guide sliding groove, and one end of the convex head connecting rod is threadedly sleeved with a horizontal screw hole arranged on one vertical face of the connecting seat.

[0018] Preferably, the guide sliding groove and the horizontal screw hole are respectively located on opposite faces of the movable strip and the connecting seat, and the guide sliding groove and the connecting block are both located on the same vertical face of the movable strip.

[0019] Preferably, the vibrating piece comprises a support block inserted with a limiting hole arranged on the top of the test bench, a first spring is fixedly arranged on one vertical face of the support block, a second spring is fixedly arranged on one vertical face of the fixed strip, and one end of the movable strip away from the support frame is located between the first spring and the second spring.

[0020] Preferably, the new energy vehicle wire harness reliability test device further comprises a component slot arranged on the top of the test bench, and after the support block is removed, the support block is placed in the component slot.

[0021] The utility model discloses the beneficial effects of:

[0022] The utility model discloses a plug -in shaft is connected between test bench and support frame with one end of movable strip, then through the sliding connection piece, the connecting seat and movable strip are connected, and the telescopic cylinder reciprocating action can be controlled, and the movable strip is pushed around the central axis of plug -in shaft and reciprocates in a certain angle range, so that one end of wire harness is fixed, and the other end is deflected synchronously with movable strip, so that the bending point of wire harness reciprocates only in a very small range, and the high frequency opening and closing action of car door can be simulated more truly, so that the test data is closer to the actual situation, the error of experimental data is reduced, and the convex head connecting rod between connecting seat and movable strip is removed in the above state, and the support block is inserted in the limiting hole, so that the free end of movable strip is pushed, and the first spring or second spring is compressed, and the pushing force is removed, and under the action of elasticity, the free end of movable strip reciprocates between the first spring and second spring at high frequency, so as to simulate the influence of vibration on the firmness of wire harness end. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme in the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only the utility model, and for those skilled in the art, other drawings can be obtained without creative labor according to these drawings.

[0024] Figure 1 It is the three-dimensional schematic diagram of the utility model Figure 1 ;

[0025] Figure 2 It is the three-dimensional schematic diagram of the utility model Figure 2 ;

[0026] Figure 3 It is the three-dimensional schematic diagram of the utility model Figure 3 ;

[0027] Figure 4 It is the plan view of Figure 1 .

[0028] Marked as in the drawing:

[0029] 1, test bench; 2, fixed strip; 3, connecting seat; 4, movable strip; 5, fixed connecting piece; 51, vertical screw hole; 52, connecting block; 53, vertical insertion hole; 54, connecting insertion rod; 6, insertion shaft; 7, wire harness; 8, support frame; 9, sliding connecting piece; 91, guide sliding groove; 92, horizontal screw hole; 93, convex round head connecting rod; 10, telescopic cylinder; 11, placing piece groove; 12, vibrating piece; 121, limiting hole; 122, supporting block; 123, first spring; 124, second spring. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail in combination with specific embodiments.

[0031] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the utility model should be understood as the usual meaning by those skilled in the art to which the utility model belongs. The "first", "second" and similar words used in the utility model do not represent any order, quantity or importance, but are only used to distinguish different components. "Include" or "contain" and similar words mean that the elements or objects before the word cover the elements or objects listed after the word and their equivalents, and do not exclude other elements or objects. "Connection" or "connection" and similar words are not limited to physical or mechanical connection, but can include electrical connection, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to represent the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0032] As shown in Figures 1 to 4 A new energy automobile wire harness reliability test device, comprising a test bench 1 and a fixed strip 2 fixed on the test bench 1, a movable strip 4 is arranged on the test bench 1, and the new energy automobile wire harness reliability test device further comprises:

[0033] A support frame 8 fixed on the test bench 1;

[0034] An insertion shaft 6 arranged on the support frame 8, the insertion shaft 6 is vertically slidably sleeved on the support frame 8, and the top of the test bench 1 is provided with a positioning hole matched with the bottom end of the insertion shaft 6, and one end of the movable strip 4 close to the support frame 8 is provided with a vertical hole, so that the insertion shaft 6 can be detachably installed between one end of the movable strip 4 and the support frame 8.

[0035] A wire harness 7 arranged between the movable strip 4 and the fixed strip 2, the end of the wire harness 7 is connected with an on-off detector for detecting the on-off state of the wire harness 7 in the experiment, so as to detect the influence of the degree of simulation experiment on the on-off of the wire harness 7.

[0036] The connecting seat 3 is slidably arranged on the test bench 1.

[0037] The telescopic cylinder 10 is fixedly arranged on the top of the test bench 1, and is used for linearly pushing the connecting seat 3 to reciprocally move linearly.

[0038] The sliding connecting piece 9 is detachably arranged between the connecting seat 3 and the movable strip 4, and is used for assisting the wire harness 7 to simulate the high-frequency reciprocating deflection experiment.

[0039] The vibrating piece 12 is detachably arranged on the top of the test bench 1, and is used for assisting the wire harness 7 to simulate the high-frequency vibration experiment.

[0040] The fixed connecting piece 5 is detachably arranged between the top of the connecting seat 3 and the movable strip 4, and is used for assisting the wire harness 7 to simulate the high-frequency reciprocating motion experiment.

[0041] As shown in Figure 1 , Figure 3 and Figure 4 , the initial wiring shape of the wire harness 7 is U-shaped, and the bending position of the wire harness 7 is located between the movable strip 4 and the fixed strip 2 and close to one end of the support frame 8. In this way, the bending position change range of the wire harness 7 in the simulation experiment is greatly reduced, the simulation experiment is closer to the actual situation, and the error of the experimental data is reduced.

[0042] As shown in Figures 1 to 4 , the connecting seat 3 and the telescopic cylinder 10 are located between the movable strip 4 and the fixed strip 2, and two opposite vertical surfaces of the connecting seat 3 are respectively attached to the opposite surfaces of the movable strip 4 and the fixed strip 2. In this way, the telescopic cylinder 10 and the connecting seat 3 can avoid interfering with the normal performance of the three simulation experiments, and can provide power during the seat moving simulation experiment and the door opening and closing simulation experiment.

[0043] As shown in Figure 1 and Figure 3 , the fixed connecting piece 5 includes a connecting block 52 fixedly arranged on one vertical surface of the movable strip 4, a vertical insertion hole 53 penetrating between the top and the bottom of the connecting block 52, and a connecting insertion rod 54 rotatably sleeved in the vertical insertion hole 53. The bottom end of the connecting insertion rod 54 is threadedly sleeved with a vertical screw hole 51 arranged on the top of the connecting seat 3. In this way, the fixed connection between the movable strip 4 and the connecting seat 3 can be quickly assembled or disassembled through pulling and twisting operations, so as to switch from other simulation experiments to the seat moving simulation experiment, or from the seat moving simulation experiment to other simulation experiments.

[0044] As shown in Figure 1 and Figure 2As shown, the sliding connector 9 includes a guide slot 91 transversely arranged on one vertical surface of the movable strip 4, a knob connecting rod 93 is slidingly sleeved in the guide slot 91, one end of the knob connecting rod 93 outside is provided with a threaded hole (hereinafter referred to as a threaded end), the other end of the knob connecting rod 93 is provided with a ball (hereinafter referred to as a spherical end), and one end of the knob connecting rod 93 is threadedly sleeved with a transverse screw hole 92 arranged on one vertical surface of the connecting seat 3.

[0045] The guide slot 91 and the transverse screw hole 92 are respectively located on the opposite surfaces of the movable strip 4 and the connecting seat 3, and the guide slot 91 and the connecting block 52 are located on the same vertical surface of the movable strip 4.

[0046] In this way, the vehicle door opening and closing simulation experiment can be quickly switched between the other two simulation experiments, the switching efficiency between simulation experiments is improved, and the overall experimental efficiency is improved.

[0047] As shown in Figure 2 and Figure 3 As shown, the vibrating member 12 includes a support block 122 inserted into a limiting hole 121 arranged on the top of the test bench 1, a first spring 123 is fixedly arranged on one vertical surface of the support block 122, a second spring 124 is fixedly arranged on one vertical surface of the fixed strip 2, and one end of the movable strip 4 away from the support frame 8 is located between the first spring 123 and the second spring 124.

[0048] The new energy automobile wire harness reliability test device further includes a component slot 11 arranged on the top of the test bench 1, and after the support block 122 is removed, the support block 122 is placed in the component slot 11.

[0049] In this way, the vibrating member 12 can be placed in the component slot 11 before the vibration simulation experiment, so as to avoid affecting the operation of the other two simulation experiments, and the vibrating member 12 can also be quickly taken out from the component slot 11 and inserted into the limiting hole 121 during the vibration simulation experiment, thereby improving the switching efficiency between simulation experiments.

[0050] Working principle: first, the convex round head connecting rod 93 is placed in the guide chute 91, so that the other end of the convex round head connecting rod 93 is separated from the connecting seat 3, then the plug-in shaft 6 is pulled out of the support frame 8, so that the end of the movable strip 4 close to the support frame 8 becomes a free end, and the plug-in shaft 6 avoids hindering the subsequent linear movement of the movable strip 4, then the connecting plug rod 54 is inserted from top to bottom through the vertical insertion hole 53 on the connecting block 52, and the bottom end of the connecting plug rod 54 is screwed into the vertical screw hole 51 on the top of the connecting seat 3, at this time, the two vertical faces of the connecting seat 3 close to the movable strip 4 and the fixed strip 3 are respectively attached to the opposite vertical faces of the two, that is, the fixed connection between the connecting seat 3 and the movable strip 4 is completed, then the position of the movable strip 4 is adjusted to be parallel to the fixed strip 2, and the two ends of the wire harness 7 are fixed on the opposite faces of the fixed strip 2 and the movable strip 4 respectively, so that the curved part of the wire harness 7 is between the fixed strip 2 and the movable strip 4 close to the support frame 8, finally, the telescopic cylinder 10 is controlled to push the connecting seat 3 to make reciprocating linear motion, and drive the movable strip 4 and one end of the wire harness 7 to make synchronous linear reciprocating motion, and the related test data such as reciprocating frequency and wire harness energization state can be recorded during the movement; after the simulation of the influence of seat movement on the on-off of the wire harness 7, the connecting plug rod 54 is first disassembled, so that the movable strip 4 is separated from the connecting seat 3, then the plug-in shaft 6 is pulled up until the bottom end of the plug-in shaft 6 is higher than the top of the movable strip 4, the vertical hole on the movable strip 4 is aligned with the bottom end of the plug-in shaft 6, then the plug-in shaft 6 is pushed down, the bottom end of the plug-in shaft 6 passes through the vertical hole inside and is inserted into the positioning hole on the test bench 1, realizing the rotary connection of one end of the movable strip 4 between the support frame 8 and the test bench 1, then the threaded end of the convex round head connecting rod 93 stored in the guide chute 91 is pulled out of the guide chute 91, and the spherical end of the convex round head connecting rod 93 is still in the guide chute 91, then the threaded end of the convex round head connecting rod 93 is screwed into the horizontal screw hole 92 on the connecting seat 3, completing the threaded connection between the two, so that the telescopic cylinder 10 is controlled again to push the connecting seat 3 to make linear reciprocating motion, and the connecting seat 3 drives the convex round head connecting rod 93 to make synchronous linear reciprocating motion, because one end of the movable strip 4 is fixed point rotation, the other end is free, when the convex round head connecting rod 93 approaches or moves away from the support frame 8, it realizes the reciprocating deflection of the movable strip 4 around the central axis of the plug-in shaft 6 within a certain angle range, which can more truly simulate the influence of door opening and closing on the on-off of the wire harness 7, and reduce the error of experimental data.After the door opening and closing simulation experiment, the end of the convex round head connecting rod 93 is unscrewed from the connecting seat 3, then the movable strip 4 is reset between the limiting hole 121 and the fixed strip 2, the supporting block 122 is taken out from the inner wall of the placing piece groove 11 and is inserted in the limiting hole 121, and the first spring 123 is opposite to the second spring 124, then the movable strip 4 is pushed to extrude the first spring 123 to contract a certain length, the pushing force is removed, the free end of the movable strip 4 is deflected under the elastic force of the first spring 123, and rebounds after hitting the connecting seat 3, so as to high-frequency reciprocating vibration, simulate the influence test of the joint connection firmness of the vibration push wire harness 7, can continuously switch between three simulation experiments without disassembling the wire harness 7, and improve the type of simulation experiment.

[0051] Those skilled in the art will understand that the above discussion of any embodiment is merely exemplary and is not intended to be limiting of the scope of the present application (including claims) to these examples. Any of the above embodiments, or variants of any of the above embodiments, or technical features from different embodiments, can be combined, steps can be implemented in any order, and there are many other variations of the different aspects of the present application as described above, which have not been provided in detail for the sake of brevity. It is intended that the application be construed as including all such alternatives, modifications and variations as fall within the scope of the appended claims.

[0052] The present application is intended to cover all such alternatives, modifications and variations as fall within the scope of the broadest possible interpretation of the appended claims. Accordingly, any and all such alternatives, modifications and variations are intended to be encompassed by the appended claims.

Claims

1. A new energy vehicle wire harness reliability test device, comprising a test table (1) and a fixed strip (2) fixedly arranged on the test table (1), and a movable strip (4) arranged on the test table (1), characterized in that, The new energy automobile wire harness reliability test device further comprises: A support frame (8) fixedly arranged on the test table (1); A plug-in shaft (6) arranged on the support frame (8), which is detachably installed between one end of the movable strip (4) and the support frame (8); A wire harness (7) arranged between the movable strip (4) and the fixed strip (2); A connecting seat (3) slidingly arranged on the test table (1); A telescopic cylinder (10) fixedly arranged on the top of the test table (1), which is used for linearly pushing the connecting seat (3) to reciprocally move linearly; A sliding connecting piece (9) detachably installed between the connecting seat (3) and the movable strip (4), which is used for assisting the wire harness (7) to simulate high-frequency reciprocating deflection test; A vibrating piece (12) detachably installed on the top of the test table (1), which is used for assisting the wire harness (7) to simulate high-frequency vibration test; A fixed connecting piece (5) detachably installed between the top of the connecting seat (3) and the movable strip (4), which is used for assisting the wire harness (7) to simulate high-frequency reciprocating motion test.

2. The new energy vehicle wire harness reliability test device according to claim 1, characterized in that, The initial wiring shape of the wire harness (7) is U-shaped, and the bending part of the wire harness (7) is located at one end between the movable strip (4) and the fixed strip (2) close to the support frame (8).

3. The new energy vehicle wire harness reliability test device according to claim 2, characterized in that, The connecting seat (3) and the telescopic cylinder (10) are located between the movable strip (4) and the fixed strip (2), and two opposite vertical surfaces of the connecting seat (3) are respectively attached to the opposite surfaces of the movable strip (4) and the fixed strip (2).

4. The new energy vehicle wire harness reliability test device according to claim 1, characterized in that, The fixed connecting piece (5) comprises a connecting block (52) fixedly arranged on one vertical surface of the movable strip (4), a vertical insertion hole (53) penetrating between the top and the bottom of the connecting block (52), a connecting insertion rod (54) rotatably sleeved in the vertical insertion hole (53), and a vertical screw hole (51) threadedly sleeved with the bottom end of the connecting insertion rod (54) arranged on the top of the connecting seat (3).

5. The new energy vehicle wire harness reliability test device according to claim 4, characterized in that, The sliding connecting piece (9) comprises a guide sliding groove (91) transversely arranged on one vertical surface of the movable strip (4), a convex round head connecting rod (93) slidingly sleeved in the guide sliding groove (91), and a horizontal screw hole (92) threadedly sleeved with one end of the convex round head connecting rod (93) arranged on one vertical surface of the connecting seat (3).

6. The new energy vehicle wire harness reliability test device according to claim 5, characterized in that, The guide sliding groove (91) and the horizontal screw hole (92) are located on the opposite surfaces of the movable strip (4) and the connecting seat (3), respectively, and the guide sliding groove (91) and the connecting block (52) are located on the same vertical surface of the movable strip (4).

7. The new energy vehicle wire harness reliability test device according to claim 1, characterized in that, Said vibrating part (12) includes a support block (122) inserted with a limiting hole (121) arranged on the top of the test bench (1), one vertical surface of the support block (122) is fixedly provided with a first spring (123), one vertical surface of the fixed strip (2) is fixedly provided with a second spring (124), and one end of the movable strip (4) away from the support frame (8) is located between the first spring (123) and the second spring (124).

8. The new energy vehicle wire harness reliability test device according to claim 7, characterized in that, The new energy automobile wire harness reliability test device further includes a component slot (11) arranged on the top of the test bench (1), and after the support block (122) is removed, the support block (122) is placed in the component slot (11).

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