Wire harness short circuit testing device
By designing an automated device for short-circuit testing of wire harnesses, using the sliding module to drive the reciprocating movement of the wire harness, the problems of low efficiency and low safety of manual testing are solved, and efficient, accurate and safe testing results are achieved.
Patent Information
- Application Number
- CN202421055627.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-15
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-05-15
AI Technical Summary
In the prior art, wire harness short circuit testing mainly relies on manual testing, which has problems such as low working efficiency, low safety and great influence by human factors.
A wire harness short circuit testing device is designed, including a sliding module, a first and a second switching module, an indicator module, a power supply and a clamp arm. Through the sliding module, the target wire harness is driven to reciprocate, so that it contacts the first wire harness, forming a test loop, and realizing automated testing.
It improves the testing efficiency, accuracy and safety of sliding short circuit tests, avoids the shortcomings of manual manual testing, realizes test automation, and ensures the reliability of test results.
Smart Images
Figure CN222952468U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the field of testing technology, and in particular relates to a wiring harness short circuit testing device. Background Art
[0002] With the increase in the number of automotive electronic and electrical sensors, controllers, and actuators, the electrical environment of the vehicle has become more complex, and electrical short circuits are very likely to occur. Insurance is the safety guarantee for the vehicle when this phenomenon occurs. The short-circuit test of the wiring harness inside the vehicle (also known as the fuse blown test) mainly relies on manual testing, which has the disadvantages of low work efficiency, low safety, and being greatly affected by human factors. Therefore, how to quickly and accurately analyze whether there is a safety hazard in the short circuit of the vehicle wiring harness is an important problem that needs to be solved urgently. Utility Model Content
[0003] The embodiments of the present application provide a wiring harness short circuit testing device, which can solve various problems existing in the current manual testing of wiring harness short circuit testing.
[0004] In a first aspect, an embodiment of the present application provides a wiring harness short circuit test device, comprising a first indication module, a first switch module, a second switch module, a sliding module, a power supply, a first clamp arm, and a second clamp arm, wherein the first switch module is respectively connected to the first indication module, the sliding module, and the negative electrode of the power supply, the sliding module is respectively connected to the positive electrode of the power supply and all tested wiring harnesses on the vehicle, the second switch module is respectively connected to the first indication module and the first wiring harness, the second clamp arm is arranged on the sliding module, the first clamp arm is used to fix the first wiring harness, and the second clamp arm is used to fix a target tested wiring harness among all tested wiring harnesses;
[0005] When the first switch module is turned on, the sliding module is used to drive the second clamp arm to reciprocate between the first position and the second position. When the second clamp arm is located at the first position, the target wiring harness under test is in contact with the first wiring harness, and when the second clamp arm is located at the second position, the target wiring harness under test is not in contact with the first wiring harness; when the second switch module is turned on and the second clamp arm is located at the first position, the first wiring harness, the first indication module, the power supply and the target wiring harness under test form a test loop; the first indication module is used to indicate the test result of the target wiring harness under test.
[0006] In a possible implementation of the first aspect, the sliding module includes a sliding motor, a negative pole of the sliding motor is connected to the first switch module, a positive pole of the sliding motor is connected to a positive pole of the power supply and all wiring harnesses under test on the vehicle, and the second clamping arm is arranged on the sliding motor.
[0007] In a possible implementation manner of the first aspect, the sliding motor is provided with a frequency adjustment knob, and the frequency adjustment knob is used to adjust the reciprocating motion frequency of the sliding motor.
[0008] In a possible implementation manner of the first aspect, the first switch module includes a first switch, a first end of the first switch is respectively connected to the negative electrode of the power supply and the first indication module, and a second end of the first switch is connected to the sliding module.
[0009] In a possible implementation manner of the first aspect, the second switch module includes a second switch, a first end of the second switch is connected to the first indication module, and a second end of the second switch is connected to the first wiring harness.
[0010] In a possible implementation manner of the first aspect, the first indication module includes a first indicator light, a cathode of the first indicator light is respectively connected to a negative electrode of the power supply and the first switch module, and a positive electrode of the first indicator light is connected to the second switch module.
[0011] In a possible implementation of the first aspect, the wiring harness short circuit testing device also includes a current sensor and a current waveform collector, the first end of the current sensor is respectively connected to the first indication module and the first end of the current waveform collector, and the second end of the current sensor is respectively connected to the second switch module and the second end of the current waveform collector.
[0012] In a possible implementation of the first aspect, the wiring harness short circuit test device further includes a third switch module, a second indication module and a third indication module, the second indication module is connected to the third switch module and the third indication module respectively, the third switch module is connected to the negative electrode of the power supply, and the third indication module is connected to the positive electrode of the power supply;
[0013] When the third switch module is turned on, the second indication module is used to output first indication information, and the third indication module is used to output second indication information.
[0014] In a possible implementation of the first aspect, the harness short circuit test device further includes a fourth switch module, and the fourth switch module is respectively connected to the negative electrode of the power supply, the second indication module, and the third indication module;
[0015] When the fourth switch module is turned on, the third indication module is used to output the second indication information.
[0016] In a possible implementation of the first aspect, the wiring harness short circuit testing device also includes a shell, and the first switch module, the second switch module, the third switch module, the fourth switch module, the first indication module, the second indication module, the third indication module, the first clamp arm, the current waveform collector and the frequency adjustment knob are arranged on the shell, and the power supply, the sliding motor and the current sensor are arranged in the shell.
[0017] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:
[0018] An embodiment of the present application provides a wiring harness short-circuit testing device, including a first indication module, a first switch module, a second switch module, a sliding module, a power supply, a first clamp arm and a second clamp arm, the first switch module is respectively connected to the first indication module, the sliding module and the negative pole of the power supply, the sliding module is respectively connected to the positive pole of the power supply and all the wiring harnesses under test on the vehicle, the second switch module is respectively connected to the first indication module and the first wiring harness, the second clamp arm is arranged on the sliding module, the first clamp arm is used to fix the first wiring harness, and the second clamp arm is used to fix the target wiring harness under test among all the wiring harnesses under test.
[0019] When performing a sliding short-circuit test on the target wiring harness under test, the first switch module is first controlled to be turned on. When the first switch module is turned on, the sliding module is used to drive the second clamp arm to reciprocate between the first position and the second position. When the second clamp arm is located at the first position, the target wiring harness under test is in contact with the first wiring harness, and when the second clamp arm is located at the second position, the target wiring harness under test is not in contact with the first wiring harness; then the second switch module is controlled to be turned on. When the second switch module is turned on and the second clamp arm is located at the first position, the first wiring harness, the first indication module, the power supply and the target wiring harness under test form a test loop, and the sliding short-circuit test can be performed on the target wiring harness under test; the first indication module is used to indicate the test result of the target wiring harness under test.
[0020] From the above, it can be seen that the wiring harness short-circuit test device provided in the embodiment of the present application drives the target wiring harness to be tested to reciprocate through the sliding module, so that the target wiring harness to be tested contacts the first wiring harness at a preset frequency, thereby improving the test efficiency, test accuracy and safety of the sliding short-circuit test. The entire test device realizes test automation through the sliding module, which solves the shortcomings of low work efficiency, low safety and greater influence of human factors in manual testing. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0022] Figure 1 It is a principle block diagram of a wiring harness short circuit testing device provided by an embodiment of the present application;
[0023] Figure 2 is a principle block diagram of a wiring harness short circuit testing device provided by another embodiment of the present application;
[0024] Figure 3 is a principle block diagram of a wiring harness short circuit testing device provided by another embodiment of the present application;
[0025] Figure 4 is a principle block diagram of a wiring harness short circuit testing device provided by another embodiment of the present application;
[0026] Figure 5 This is the circuit connection diagram of the wiring harness short circuit test circuit in this application Figure 1 ;
[0027] Figure 6 This is the circuit connection diagram of the wiring harness short circuit test circuit in this application Figure 2 ;
[0028] Figure 7 This is the circuit connection diagram of the wiring harness short circuit test circuit in this application Figure 3 ;
[0029] Figure 8 It is a schematic diagram of the appearance of a wiring harness short circuit testing device provided in one embodiment of the present application.
[0030] In the figure: 10, housing; 11, first clamping arm; 21, first indication module; 22, first switch module; 23, second switch module; 24, sliding module; 241, second clamping arm; 251, current sensor; 252, current waveform collector; 26, third switch module; 27, second indication module; 28, third indication module; 29, fourth switch module; 30, power supply; 40, first wiring harness; 50, target wiring harness to be measured. DETAILED DESCRIPTION
[0031] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.
[0032] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.
[0033] As used in the specification and appended claims of this application, the term "if" can be interpreted as "when" or "uponce" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "uponce it is determined" or "in response to determining" or "uponce [described condition or event] is detected" or "in response to detecting [described condition or event]", depending on the context.
[0034] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.
[0035] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.
[0036] Conducting a short-circuit test on the wiring harness inside the vehicle is a necessary step before the vehicle is produced. The short-circuit test on the wiring harness inside the vehicle mainly includes a sliding short-circuit test and a full short-circuit test. The current sliding short-circuit test and full short-circuit test mainly rely on manual testing. When performing a manual sliding short-circuit test, a relatively long short circuit may be caused due to unstable hands during the sliding process, making the sliding short-circuit test lose its purpose; and the frequency and method of manual sliding are greatly affected by human factors; in addition, sparks will fly at the contact point of the wires during the short-circuit test. If the sparks are large or touch the skin, it will cause harm to the person, and there is a large current in the short-circuit test, and there is a possibility of electric shock.
[0037] In view of the above problems, the present application embodiment proposes a wiring harness short circuit test device, such as Figure 1 As shown, the harness short circuit test device includes a first indication module 21, a first switch module 22, a second switch module 23, a sliding module 24, a power supply 30, a first clamp arm 11 and a second clamp arm 241. The first switch module 22 is respectively connected to the first indication module 21, the sliding module 24 and the negative pole of the power supply 30, the sliding module 24 is respectively connected to the positive pole of the power supply 30 and all the tested harnesses on the vehicle, the second switch module 23 is respectively connected to the first indication module 21 and the first harness 40, the second clamp arm 241 is arranged on the sliding module 24, the first clamp arm 11 is used to fix the first harness 40, and the second clamp arm 241 is used to fix the target harness 50 among all the tested harnesses. Among them, the setting position of the first clamp arm 11 is not limited in this application, as long as the first harness 40 and the target harness 50 can be in contact during the short circuit test.
[0038] Specifically, the wiring harness short circuit test device provided in the embodiment of the present application can realize the sliding short circuit test and the complete short circuit test of the wiring harness. When the sliding short circuit test is performed on the target wiring harness 50 to be tested, the first switch module 22 is first controlled to be turned on. When the first switch module 22 is turned on, the sliding module 24 is used to drive the second clamping arm 241 to reciprocate between the first position and the second position. When the second clamping arm 241 is located at the first position, the target wiring harness 50 to be tested is in contact with the first wiring harness 40, and when the second clamping arm 241 is located at the second position, the target wiring harness 50 to be tested is not in contact with the first wiring harness 40; then the second switch module 23 is controlled to be turned on. When the second switch module 23 is turned on and the second clamping arm 241 is located at the first position, the first wiring harness 40, the first indication module 21, the power supply 30 and the target wiring harness 50 to be tested form a test loop, and the sliding short circuit test can be performed on the target wiring harness 50 to be tested; the first indication module 21 is used to indicate the test result of the target wiring harness 50 to facilitate the tester to understand the test result in time.
[0039] It can be seen from the above that the wiring harness short-circuit test device provided in the embodiment of the present application drives the target wiring harness 50 to move back and forth through the sliding module 24, so that the target wiring harness 50 to be tested contacts the first wiring harness 40 at a preset frequency, thereby improving the test efficiency, test accuracy and safety of the sliding short-circuit test. The entire test device realizes test automation through the sliding module 24, thereby avoiding the problem that when performing a manual sliding short-circuit test, a short circuit may be caused for a relatively long time due to unstable hands during the sliding process, making the sliding short-circuit test lose its purpose, the frequency and method of manual sliding are greatly affected by human factors, and may cause personal injury.
[0040] When performing a complete short-circuit test on the target wiring harness 50, first control the first switch module 22 to be disconnected. When the first switch module 22 is disconnected, the sliding module 24 stops working. After the sliding module 24 stops working, the target wiring harness 50 and the first wiring harness 40 are fixed together by a clamp; then control the second switch module 23 to be turned on. When the second switch module 23 is turned on, the first wiring harness 40, the first indication module 21, the power supply 30 and the target wiring harness 50 form a test loop, and the target wiring harness 50 can be subjected to a complete short-circuit test; the first indication module 21 is used to indicate the test result of the target wiring harness 50, so that the tester can understand the test result in time.
[0041] It can be seen from the above that the wiring harness short-circuit test device provided in the embodiment of the present application also avoids manual contact when performing a complete short-circuit test, thereby ensuring the personal safety of the tester.
[0042] like Figure 5 As shown, the sliding module 24 includes a sliding motor M, the negative pole of the sliding motor M is connected to the first switch module 22, the positive pole of the sliding motor M is respectively connected to the positive pole of the power supply 30 and all the tested wiring harnesses on the vehicle, and the second clamping arm 241 is arranged on the sliding motor M.
[0043] Specifically, when the first switch module 22 is turned on, the power supply 30 supplies power to the sliding motor M, and the sliding motor M starts to work and drives the second clamping arm 241 to reciprocate between the first position and the second position, thereby driving the target measured wiring harness 50 to reciprocate between the first position and the second position. When the second clamping arm 241 is located at the first position, the target measured wiring harness 50 is in contact with the first wiring harness 40, and when the second clamping arm 241 is located at the second position, the target measured wiring harness 50 is not in contact with the first wiring harness 40.
[0044] When the first switch module 22 is disconnected, the power source 30 cannot supply power to the sliding motor M, and the sliding motor M stops working.
[0045] Exemplarily, the sliding motor M is provided with a frequency adjustment knob, and the frequency adjustment knob is used to adjust the reciprocating motion frequency of the sliding motor M to adapt to the sliding short circuit test of different vehicle models.
[0046] like Figure 5 As shown, the first switch module 22 includes a first switch K1, a first end of the first switch K1 is connected to the negative electrode of the power source 30 and the first indication module 21, and a second end of the first switch K1 is connected to the sliding module 24. Figure 5 It can be known that the second end of the first switch K1 is connected to the negative electrode of the sliding motor M.
[0047] Specifically, when performing a sliding short circuit test on the target wiring harness 50 under test, the first switch K1 is first controlled to be turned on. When the first switch K1 is turned on, the sliding motor M is used to drive the second clamping arm 241 to reciprocate between the first position and the second position. When the second clamping arm 241 is located at the first position, the target wiring harness 50 under test is in contact with the first wiring harness 40, and when the second clamping arm 241 is located at the second position, the target wiring harness 50 under test is not in contact with the first wiring harness 40; then the second switch module 23 is controlled to be turned on. When the second switch module 23 is turned on and the second clamping arm 241 is located at the first position, the first wiring harness 40, the first indication module 21, the power supply 30 and the target wiring harness 50 under test form a test loop, and the sliding short circuit test can be performed on the target wiring harness 50 under test; the first indication module 21 is used to indicate the test result of the target wiring harness 50 under test.
[0048] When performing a complete short-circuit test on the target wiring harness 50, first control the first switch K1 to be disconnected. When the first switch K1 is disconnected, the sliding motor M stops working. After the sliding motor M stops working, the target wiring harness 50 and the first wiring harness 40 are fixed together by a clamp; then control the second switch module 23 to be turned on. When the second switch module 23 is turned on, the first wiring harness 40, the first indication module 21, the power supply 30 and the target wiring harness 50 form a test loop, and the target wiring harness 50 can be subjected to a complete short-circuit test; the first indication module 21 is used to indicate the test result of the target wiring harness 50.
[0049] Exemplarily, the first switch K1 is a mechanical switch.
[0050] like Figure 5 As shown, the second switch module 23 includes a second switch K2 , a first end of the second switch K2 is connected to the first indication module 21 , and a second end of the second switch K2 is connected to the first wiring harness 40 .
[0051] Specifically, when performing a sliding short circuit test on the target wiring harness 50, the first switch K1 is first controlled to be turned on. When the first switch K1 is turned on, the sliding motor M is used to drive the second clamping arm 241 to reciprocate between the first position and the second position. When the second clamping arm 241 is located at the first position, the target wiring harness 50 is in contact with the first wiring harness 40, and when the second clamping arm 241 is located at the second position, the target wiring harness 50 is not in contact with the first wiring harness 40; then the second switch K2 is controlled to be turned on. When the second switch K2 is turned on and the second clamping arm 241 is located at the first position, the first wiring harness 40, the first indication module 21, the power supply 30 and the target wiring harness 50 form a test loop, and the sliding short circuit test can be performed on the target wiring harness 50; the first indication module 21 is used to indicate the test result of the target wiring harness 50.
[0052] When performing a complete short-circuit test on the target wiring harness 50, first control the first switch K1 to be disconnected. When the first switch K1 is disconnected, the sliding motor M stops working. After the sliding motor M stops working, the target wiring harness 50 and the first wiring harness 40 are fixed together by a clamp; then control the second switch K2 to be turned on. When the second switch K2 is turned on, the first wiring harness 40, the first indication module 21, the power supply 30 and the target wiring harness 50 form a test loop, and the target wiring harness 50 can be completely short-circuited. The first indication module 21 is used to indicate the test result of the target wiring harness 50.
[0053] Exemplarily, the second switch K2 is a mechanical switch.
[0054] like Figure 5 As shown, the first indication module 21 includes a first indicator light, the cathode of the first indicator light is connected to the negative electrode of the power supply 30 and the first switch module 22 respectively, and the anode of the first indicator light is connected to the second switch module 23. Figure 5 It can be seen that the cathode of the first indicator light is connected to the negative electrode of the power source 30 and the first end of the first switch K1 respectively, and the anode of the first indicator light is connected to the first end of the second switch K2.
[0055] Specifically, during the short circuit test, the first indicator light is used to indicate the test result of the target tested wiring harness 50. For example, when the target tested wiring harness 50 is short-circuited, if the test is qualified, the first indicator light goes out, and if the test is unsatisfactory, the first indicator light is on.
[0056] Exemplarily, the first indicator light is a light emitting diode.
[0057] It should be noted that when performing a short circuit test, if the fuse connected to the target tested wiring harness 50 is broken, and the target tested wiring harness 50 does not heat up or burn, it means that the target tested wiring harness 50 and the fuse connected to the target tested wiring harness 50 are matched, that is, the test is qualified. If the fuse connected to the target tested wiring harness 50 is not broken, causing the target tested wiring harness 50 to heat up or even catch fire, it means that the target tested wiring harness 50 and the fuse connected to the target tested wiring harness 50 are not matched, that is, the test is unqualified, and the fuse needs to be re-adapted to meet the requirement that the target tested wiring harness 50 and the fuse connected to the target tested wiring harness 50 match.
[0058] like Figure 2 As shown, the wiring harness short circuit test device also includes a current sensor 251 and a current waveform collector 252, the first end of the current sensor 251 is respectively connected to the first indication module 21 and the first end of the current waveform collector 252, and the second end of the current sensor 251 is respectively connected to the second switch module 23 and the second end of the current waveform collector 252.
[0059] Specifically, the current sensor 251 is used to collect the current on the test loop and transmit the current on the test loop to the current waveform collector 252. The current waveform collector 252 is used to process and display the current on the test loop. For example: when performing a sliding short circuit test on the target measured wiring harness 50, the first switch K1 is first controlled to be turned on. When the first switch K1 is turned on, the sliding motor M is used to drive the second clamping arm 241 to reciprocate between the first position and the second position. When the second clamping arm 241 is located at the first position, the target measured wiring harness 50 is in contact with the first wiring harness 40, and when the second clamping arm 241 is located at the second position, the target measured wiring harness 50 is not in contact with the first wiring harness 40; then the second switch K2 is controlled to be turned on. When the second switch K2 is turned on and the second clamping arm 241 is located at the first position, the first wiring harness 40, the first indication module 21, the power supply 30 and the target measured wiring harness 50 form a test loop and generate an impact current. The current sensor 251 is used to collect the impact current in the test loop and transmit the impact current to the current waveform collector 252. The current waveform collector 252 is used to process and display the impact current, and the displayed waveform shows an upward trend. When the test is finished, the second switch K2 is disconnected, and no current is generated in the test loop. At this time, a stable waveform is displayed on the current waveform collector 252.
[0060] like Figure 3As shown, the wiring harness short circuit testing device also includes a third switch module 26, a second indication module 27 and a third indication module 28. The second indication module 27 is connected to the third switch module 26 and the third indication module 28 respectively. The third switch module 26 is connected to the negative pole of the power supply 30, and the third indication module 28 is connected to the positive pole of the power supply 30.
[0061] Specifically, when the short circuit test is performed on the wiring harness on the vehicle, it mainly includes a sliding short circuit test and a complete short circuit test. On the basis of these two short circuit tests, other types of tests need to be performed, such as a fast-fuse fuse test, that is, testing the target tested wiring harness 50 in a very short time. In order to prompt the user to perform a fast-fuse fuse test on the target tested wiring harness 50, the present application sets a corresponding switch module (third switch module 26) and an indication module (second indication module 27 and third indication module 28).
[0062] For example: when a fast-fuse fuse test is performed on the target wiring harness 50 under test, the third switch module 26 is controlled to be turned on. When the third switch module 26 is turned on, the second indication module 27 is used to output a first indication information, and the third indication module 28 is used to output a second indication information. The first indication information and the second indication information are used to remind the tester that the fast-fuse fuse test is in progress.
[0063] like Figure 6 As shown, the third switch module 26 includes a third switch K3 , a first end of the third switch K3 is connected to the negative electrode of the power source 30 , and a second end of the third switch K3 is connected to the second indication module 27 .
[0064] Specifically, when a fast-fuse fuse test is performed on the target wiring harness 50 under test, the third switch K3 is controlled to be turned on. When the third switch K3 is turned on, the second indication module 27 is used to output a first indication information, and the third indication module 28 is used to output a second indication information. The first indication information and the second indication information are used to remind the tester that the fast-fuse fuse test is in progress.
[0065] Exemplarily, the third switch K3 is a mechanical switch.
[0066] like Figure 6 As shown, the second indication module 27 includes a second indicator light and a third indicator light, the third indication module 28 includes a fourth indicator light and a fifth indicator light, the cathode of the second indicator light is connected to the second end of the third switch K3, the anode of the second indicator light is connected to the cathode of the third indicator light, the anode of the third indicator light is connected to the cathode of the fourth indicator light, the anode of the fourth indicator light is connected to the cathode of the fifth indicator light, and the anode of the fifth indicator light is connected to the positive pole of the power supply 30.
[0067] Specifically, when the fast-fuse fuse test is performed on the target tested wiring harness 50, the third switch K3 is controlled to be turned on. When the third switch K3 is turned on, the second indicator light, the third indicator light, the fourth indicator light and the fifth indicator light all light up to remind the tester that a single-strand sliding short-circuit test, a single-strand complete short-circuit test, a wire sliding short-circuit test and a wire complete short-circuit test are required when testing the fast-fuse fuse.
[0068] Exemplarily, the second indicator light, the third indicator light, the fourth indicator light and the fifth indicator light are all light emitting diodes.
[0069] like Figure 4 As shown, the harness short circuit test device further includes a fourth switch module 29 , which is connected to the negative pole of the power source 30 , the second indication module 27 and the third indication module 28 respectively.
[0070] Specifically, when the short circuit test is performed on the wiring harness on the vehicle, it mainly includes a sliding short circuit test and a complete short circuit test. On the basis of these two short circuit tests, other types of tests need to be performed, such as a slow-fuse fuse test, that is, testing the target tested wiring harness 50 for a longer period of time. In order to prompt the tester to perform a slow-fuse fuse test on the target tested wiring harness 50, the present application sets a corresponding switch module (fourth switch module 26) and an indication module (third indication module 28).
[0071] For example, when a slow-blow fuse test is performed on the target wiring harness 50, the fourth switch module 29 is controlled to be turned on. When the fourth switch module 29 is turned on, the third indication module 28 is used to output a second indication message, and the second indication message is used to remind the tester that the slow-blow fuse test is in progress.
[0072] like Figure 7 As shown, the fourth switch module 29 includes a fourth switch K4, a first end of the fourth switch K4 is respectively connected to the negative electrode of the power source 30, and a second end of the fourth switch K4 is respectively connected to the anode of the third indicator light and the cathode of the fourth indicator light.
[0073] Specifically, when a slow-blow fuse test is performed on the target wiring harness 50 under test, the fourth switch K4 is controlled to be turned on. When the fourth switch K4 is turned on, the third indicator light and the fourth indicator light both light up to remind the tester that a wire sliding short-circuit test and a wire complete short-circuit test are required during the slow-blow fuse test, so as to prevent the tester from missing related tests.
[0074] Exemplarily, the fourth switch K4 is a mechanical switch.
[0075] Figure 8 As shown, the wiring harness short circuit test device provided in the embodiment of the present application further includes a housing 10, a first switch module (corresponding to Figure 8Sliding motor switch in), the second switch module (corresponding to Figure 8 The power switch in the third switch module (corresponding to Figure 8 The fast-fuse test switch in the fourth switch module (corresponding to Figure 8 Slow-blow test switch in), the first indication module (corresponding to Figure 8 The insurance on / off indicator light in the Figure 8 The single-strand sliding short-circuit test indicator light and the single-strand complete short-circuit test indicator light in the third indicator module (corresponding to Figure 8 The first clamp arm 11, the current waveform collector and the frequency adjustment knob are arranged on the housing 10, and the power supply, the sliding motor and the current sensor are arranged in the housing 10.
[0076] The following describes the operation steps of the wiring harness short circuit test device:
[0077] 1. Connect all the wiring harnesses to the positive power connector of the device, such as Figure 8 As shown, there is only one positive power supply interface in the device to prevent users from making mistakes when connecting.
[0078] 2. If Figure 8 As shown, the first wire harness 40 is fixed to the first clamp arm 11, and the insulation sheath of the first wire harness 40 is stripped off, and at the same time, the target measured wire harness 50 is fixed to the second clamp arm 241, and the insulation sheath of the target measured wire harness 50 is stripped off;
[0079] 3. Choose the fast or slow fuse test type, and do the corresponding test type under the prompt of the indicator light to avoid missing related tests. Fast fuse test requires single strand short circuit test, single strand complete short circuit test, wire short circuit test, wire complete short circuit test; slow fuse test requires wire short circuit test and wire complete short circuit test;
[0080] 4. Turn on the sliding motor switch, confirm whether the target tested wire harness 50 can contact the first wire harness 40, and then rotate the frequency adjustment knob to adjust the reciprocating frequency of the sliding motor;
[0081] 5. Turn on the power switch to perform the sliding short circuit test. After the test is completed, turn off the power switch;
[0082] 6. If a complete short circuit test is required, turn off the sliding motor switch, fix the first wiring harness 40 and the target wiring harness 50 by a clamp, and then turn on the power switch to perform a complete short circuit test. It should be noted that the fuse on / off indicator light is used to indicate the test result of the target wiring harness 50. If the fuse on / off indicator light is on, it means that the fuse is not blown, causing the target wiring harness 50 to heat up or even burn, which means the test is unqualified, and the power switch should be turned off immediately; if the fuse on / off indicator light is off, it means that the fuse is blown, and the target wiring harness 50 does not heat up, which means the test is qualified.
[0083] In summary, the wiring harness short circuit test device provided in the embodiment of the present application can ensure the rigor and safety of the wiring harness short circuit test, while ensuring that the test is not affected by human factors. By adjusting the reciprocating frequency of the sliding motor M, the contact time during the sliding short circuit test is ensured to be short enough; and the short circuit test operation is performed through the device to ensure the safety of the test process; in addition, through various indication modules, the tester can observe the test type and results more intuitively.
[0084] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.
Claims
1. A wiring harness short circuit test device, characterized in that: The device comprises a first indication module, a first switch module, a second switch module, a sliding module, a power supply, a first clamping arm and a second clamping arm, wherein the first switch module is respectively connected to the first indication module, the sliding module and the negative electrode of the power supply, the sliding module is respectively connected to the positive electrode of the power supply and all the tested wiring harnesses on the vehicle, the second switch module is respectively connected to the first indication module and the first wiring harness, the second clamping arm is arranged on the sliding module, the first clamping arm is used to fix the first wiring harness, and the second clamping arm is used to fix the target tested wiring harness among all the tested wiring harnesses; When the first switch module is turned on, the sliding module is used to drive the second clamping arm to reciprocate between the first position and the second position, when the second clamping arm is located at the first position, the target measured wiring harness is in contact with the first wiring harness, and when the second clamping arm is located at the second position, the target measured wiring harness is not in contact with the first wiring harness; When the second switch module is turned on and the second clamp arm is located at the first position, the first wiring harness, the first indication module, the power supply and the target wiring harness under test form a test loop; the first indication module is used to indicate the test result of the target wiring harness under test.
2. The wiring harness short circuit test device according to claim 1, characterized in that: The sliding module comprises a sliding motor, the negative pole of the sliding motor is connected to the first switch module, the positive pole of the sliding motor is connected to the positive pole of the power supply and all the tested wiring harnesses on the vehicle, and the second clamping arm is arranged on the sliding motor.
3. The wiring harness short circuit testing device according to claim 2, characterized in that: The sliding motor is provided with a frequency adjustment knob, and the frequency adjustment knob is used to adjust the reciprocating frequency of the sliding motor.
4. The wiring harness short circuit test device according to claim 1, characterized in that: The first switch module includes a first switch, a first end of the first switch is respectively connected to the negative electrode of the power supply and the first indication module, and a second end of the first switch is connected to the sliding module.
5. The wiring harness short circuit testing device according to claim 1, characterized in that: The second switch module includes a second switch, a first end of the second switch is connected to the first indication module, and a second end of the second switch is connected to the first wiring harness.
6. The wiring harness short circuit testing device according to claim 1, characterized in that: The first indication module includes a first indicator light, a cathode of the first indicator light is respectively connected to a negative electrode of the power supply and the first switch module, and a positive electrode of the first indicator light is connected to the second switch module.
7. The wiring harness short circuit test device according to any one of claims 1 to 6, characterized in that: The harness short circuit testing device also includes a current sensor and a current waveform collector, wherein the first end of the current sensor is respectively connected to the first indication module and the first end of the current waveform collector, and the second end of the current sensor is respectively connected to the second switch module and the second end of the current waveform collector.
8. The wiring harness short circuit testing device according to claim 7, characterized in that: The harness short circuit test device further includes a third switch module, a second indication module and a third indication module, wherein the second indication module is connected to the third switch module and the third indication module respectively, the third switch module is connected to the negative electrode of the power supply, and the third indication module is connected to the positive electrode of the power supply; When the third switch module is turned on, the second indication module is used to output first indication information, and the third indication module is used to output second indication information.
9. The wiring harness short circuit testing device according to claim 8, characterized in that: The harness short circuit test device further includes a fourth switch module, and the fourth switch module is respectively connected to the negative electrode of the power supply, the second indication module and the third indication module; When the fourth switch module is turned on, the third indication module is used to output the second indication information.
10. The wiring harness short circuit testing device according to claim 9, characterized in that: The wiring harness short circuit testing device also includes a shell, and the first switch module, the second switch module, the third switch module, the fourth switch module, the first indication module, the second indication module, the third indication module, the first clamping arm, the current waveform collector and the frequency adjustment knob are arranged on the shell, and the power supply, the sliding motor and the current sensor are arranged in the shell.