Wire harness puncturing jig for automobile electronic electrostatic discharge test

Abstract

The utility model relates to the technical field of automobile electronic electrostatic discharge test, and discloses a wire harness puncturing jig for automobile electronic electrostatic discharge test, which comprises a probe, a connecting mechanism and a holding mechanism which are connected in sequence, the probe comprises a probe front block, a probe rear block and a probe, the connecting mechanism comprises an outer connecting pipe and an inner connecting rod, and the holding mechanism comprises an outer connecting pipe and an inner connecting rod. The holding mechanism comprises a handle and a pressing head; the inner connecting rod is located in the outer connecting pipe, the length of the inner connecting rod is larger than that of the outer connecting pipe, the probe front block is fixedly connected with one end of the inner connecting rod, the pressing head is fixedly connected with the other end of the inner connecting rod, the probe rear block is fixedly connected with one end of the outer connecting pipe, and the handle is fixedly connected with the other end of the outer connecting pipe. The pressing head is located behind the handle. According to the utility model, the automobile electronic electrostatic discharge test efficiency can be obviously improved, and the physical strength of testers is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of automotive electronic electrostatic discharge testing, and particularly relates to a wire harness piercing fixture for automotive electronic electrostatic discharge testing. Background Art

[0002] At present, many automotive OEMs in the automotive field require their components to conduct wire harness piercing electrostatic discharge tests within 100 mm of the connector. As Figure 4 shown, an electrostatic gun conducts an electrostatic discharge test on the piercing point 100 mm away from the connector and a communication bus remote I / O electrostatic discharge test. Currently, for the wire harness piercing electrostatic discharge test within 100 mm of the connector in the laboratory, a fine needle is required to pierce each tested wire harness at a distance of 100 mm from the connector one by one, and then an electrostatic discharge test is conducted on the piercing point. Currently, for the communication bus remote I / O electrostatic discharge test, each tested wire harness needs to be cut with a small knife at the connector and a wire harness no longer than 1700 mm is connected in parallel, and an electrostatic discharge test is conducted at the remote end. After the test, the damaged wire harness needs to be restored.

[0003] At present, there is no dedicated fixture for the above tests in the laboratory. Currently, automotive electronics have diverse functions and a large number of signal wire harnesses, ranging from a few to dozens or even hundreds. This testing method is laborious and time-consuming, with low efficiency. When restoring the cut wire harness, it is easy to cause poor sealing and a risk of short circuit, and poor shielding is also likely to affect other electromagnetic compatibility tests. Summary of the Utility Model

[0004] The utility model aims to provide a wire harness piercing fixture for automotive electronic electrostatic discharge testing to solve the problem of low efficiency in current automotive electronic electrostatic discharge testing.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A wire harness piercing fixture for automotive electronic electrostatic discharge testing includes a probe, a connecting mechanism, and a holding mechanism connected in sequence. The probe includes a probe front block, a probe rear block, and a probe needle. The connecting mechanism includes an outer connecting tube and an inner connecting rod. The holding mechanism includes a handle and a pressing head.

[0007] The inner connecting rod is located inside the outer connecting tube, and the length of the inner connecting rod is greater than the length of the outer connecting tube. One end of the inner connecting rod is fixedly connected to the probe front block, the pressing head is fixedly connected to the other end of the inner connecting rod, one end of the outer connecting tube is fixedly connected to the probe rear block, and the other end of the outer connecting tube is fixedly connected to the handle. The pressing head is located behind the handle.

[0008] The rear block of the probe and the handle are of hollow structures. The inner connecting rod can slide within the rear block of the probe, the outer connecting pipe, and the handle. The end face of the front block of the probe opposite to the rear block of the probe can be in contact. The probe is fixedly arranged on the end face of the front block of the probe or the rear block of the probe opposite thereto.

[0009] The principle of this solution is as follows:

[0010] When actually performing the electrostatic discharge test by piercing the wire harness within 100 mm of the connector, the tester holds the handle of the present utility model and presses the pressing head. The pressing head pushes the inner connecting rod to move, and the front block of the probe connected to the other end of the inner connecting rod moves accordingly. A gap for the wire harness to be tested to pass through appears between the front block of the probe and the rear block of the probe. The wire harness to be tested is placed into the gap, the pressing head is reset, the pressing head pulls the inner connecting rod, the inner connecting rod drives the front block of the probe, and the front block of the probe and the rear block of the probe clamp. The probe fixedly arranged on the end face of the front block of the probe or the rear block of the probe opposite thereto pierces the wire harness to be tested. After a piercing point for the electrostatic discharge test appears on the wire harness to be tested, the tester removes the wire harness to be tested and completes the subsequent test.

[0011] The advantages of this solution are as follows:

[0012] 1. Compared with the traditional solution, this solution is fast, labor-saving, simple and efficient, can save the physical strength of test engineers, and can easily and quickly pierce the outer insulation layer of the wire harness to be tested;

[0013] 2. Compared with the traditional solution, the piercing position of this solution is accurately controllable and easy to adjust;

[0014] 3. Compared with the traditional solution, the aperture of the piercing point of this solution is controllable, which is conducive to restoring the original state and reducing the impact of damaging the wire harness on subsequent experiments.

[0015] Preferably, as an improvement, a banana female head is also fixedly arranged on the handle. This solution can also perform the electrostatic discharge test on the remote I / O of the communication bus. The banana female head can be used to connect the test wire harness in the electrostatic discharge test on the remote I / O of the communication bus.

[0016] Preferably, as an improvement, a test wire harness is further included. The test wire harness includes a banana male head and a wire harness. The banana male head is fixedly connected to the wire harness, and the banana male head can be inserted into the banana female head. This test wire harness can be used to perform the electrostatic discharge test on the remote I / O of the communication bus. That is, after the probe pierces the wire harness to be tested, the test wire harness is inserted into the banana female head through the banana male head to complete the parallel connection of the test wire harness. Compared with the method of using a small knife to cut the outer insulation layer of the wire harness to be tested and then paralleling a test wire harness in the traditional test, the present utility model can quickly realize the parallel connection and disassembly of the wire harness to be tested and the test wire harness. At the same time, the test wire harness can be reused and is universal for all wire harnesses to be tested. In addition, the present utility model has less damage to the outer insulation layer of the wire harness to be tested, is conducive to restoration, and reduces the impact of damaging the wire harness to be tested on subsequent experiments.

[0017] Preferably, as an improvement, a spring is provided between the pressing head and the handle. The spring can make the pressing head reset automatically, making the whole operation more convenient and labor-saving.

[0018] Preferably, as an improvement, the pressing head is in the shape of a hollow cylinder with one end closed. The non-closed end of the pressing head is slidably connected to the handle, and the closed end of the pressing head is fixedly connected to the inner connecting rod. The non-closed end of the pressing head is slidably connected to the handle, and the handle can provide a certain guiding function to prevent the inner connecting rod from skewing when sliding, resulting in incorrect punching positions.

[0019] Preferably, as an improvement, a pressing handle is further provided on the handle. It is beneficial for the tester to hold the handle and press the pressing head, further saving manpower.

[0020] Preferably, as an improvement, the length of the wire harness is 1700 mm. The parallel test wire harness for the electrostatic discharge test of the remote I / O of the communication bus is required to be no longer than 1700 mm. The wire harness of this length can meet the numerical requirements of the test wire harness and has universality. Brief Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of Embodiment 1 of the present invention;

[0022] Figure 2 It is Figure 1 an enlarged view of part A in

[0023] Figure 3 It is a schematic structural diagram of Embodiment 2 of the present invention;

[0024] Figure 4 It is a layout diagram of the electrostatic discharge puncture point and the remote I / O test described in the background art. Detailed Description of the Preferred Embodiments

[0025] The following is further detailed through specific embodiments:

[0026] The reference numerals in the accompanying drawings of the specification include: front probe block 1, probe 1-1, rear probe block 2, outer connecting tube 3, inner connecting rod 4, handle 5, pressing head 6, spring 6-1, pressing handle 7, banana female head 8, banana male head 9, wire harness 10.

[0027] Embodiment 1

[0028] Basically as shown in the attached Figure 1 drawings:

[0029] A wire harness piercing fixture for automotive electronic electrostatic discharge testing, comprising a probe, a connecting mechanism, and a holding mechanism connected in sequence. The probe includes a probe front block 1, a probe rear block 2, and a probe 1-1. The connecting mechanism includes an outer connecting tube 3 and an inner connecting rod 4. The holding mechanism includes a handle 5 and a pressing head 6. The inner connecting rod 4 is located inside the outer connecting tube 3, and the length of the inner connecting rod 4 is greater than the length of the outer connecting tube 3. The probe front block 1 is fixedly connected to one end of the inner connecting rod 4, and the pressing head 6 is fixedly connected to the other end of the inner connecting rod 4. The probe rear block 2 is fixedly connected to one end of the outer connecting tube 3, and the handle 5 is fixedly connected to the other end of the outer connecting tube 3. The pressing head 6 is located behind the handle 5.

[0030] A pressing handle 7 is further provided on the handle 5. The pressing handle 7 is in the shape of a rectangular thin sheet with a curvature, symmetrically fixed on the outer surface of the handle 5 away from the pressing head 6. The convex part of the pressing handle 7 faces the direction of the pressing head 6, and the index finger and middle finger can be placed in the concave curvature of the pressing handle 7.

[0031] The pressing head 6 is in the shape of a hollow cylinder with one end closed. The non-closed end of the pressing head 6 is slidably connected to the handle 5, and the closed end of the pressing head 6 is fixedly connected to the inner connecting rod 4. A spring 6-1 is provided between the pressing head 6 and the handle 5. One end of the handle 5 in contact with the spring 6-1 has a part for supporting the spring 6-1, and the spring 6-1 is sleeved on the inner connecting rod 4. The probe rear block 2 and the handle 5 are of hollow structures, and the inner connecting rod 4 can slide inside the probe rear block 2, the outer connecting tube 3, and the handle 5. The opposite end faces of the probe front block 1 and the probe rear block 2 can be in contact. As Figure 2 shown, tooth-shaped meshing interfaces are provided on the opposite end faces of the probe front block 1 and the probe rear block 2, and the probe 1-1 is fixedly arranged on the opposite end face of the probe front block 1 or the probe rear block 2. In this embodiment, the probe 1-1 is fixedly arranged on the end face of the probe front block 1.

[0032] In actual use, when it is necessary to perform a puncture electrostatic discharge test on the wire harness within 100 mm of the plug-in, the tester holds the handle 5, places the index finger and middle finger within the concave arc of the pressing handle 7, and places the thumb on the closed end face of the pressing head 6. This usage action can facilitate the tester to hold the device and make it more labor-saving to press the pressing head 6. Press the pressing head 6, and the spring 6-1 arranged between the pressing head 6 and the handle 5 is compressed by force. The inner connecting rod 4 moves along with the pressing head 6, driving the probe front block 1 connected to the other end to move forward. A gap for the wire harness to be tested to pass through appears between the probe front block 1 and the probe rear block 2. Place the wire harness to be tested in the gap, adjust the position where punching and puncturing are required, align it with the probe 1-1. After placing it, the tester's thumb releases the pressing head 6. The spring 6-1 loses pressure and begins to return to its original state, and pushes the pressing head 6 to reset. The pressing head 6 drives the inner connecting rod 4 to move backward, and the probe front block 1 connected to one end of the inner connecting rod 4 moves backward accordingly. The probe front block 1 and the probe rear block 2 clamp, and the probe 1-1 pierces the outer insulation layer of the wire harness to be tested under the pulling force of the spring 6-1. If the outer insulation layer of the wire harness to be tested is relatively tough and the probe 1-1 cannot pierce it through the pulling force of the spring 6-1, the user can hold the probe front block 1 with the hand and make the probe front block 1 move relative to the probe rear block 2 to increase the acting force, leaving a puncture point for electrostatic discharge testing on the outer insulation layer of the wire harness to be tested. The tester removes the wire harness to be tested and performs electrostatic discharge into the wire harness to be tested to complete the subsequent test.

[0033] Embodiment 2

[0034] Basically as shown in the appendix Figure 3 As shown, the difference between this embodiment and Embodiment 1 is that: a banana female head 8 is also fixedly arranged on the handle 5, and a connecting arm is fixedly connected between the lower part of the pressing handle 7 relative to the handle 5 and the handle 5. The connecting arm surrounds the banana female head 8 to protect the banana female head 8 from being knocked. It also includes a test wire harness, which includes a banana male head 9 and a wire harness 10. The banana male head 9 is fixedly connected to the wire harness 10, and the length of the wire harness 10 is 1700 mm. The banana male head 9 can be inserted into the banana female head 8 to provide the test wire harness required for parallel connection for the electrostatic discharge test of the communication bus remote I / O.

[0035] In actual use, when it is necessary to perform an electrostatic discharge test on the communication bus remote I / O, after completing the steps in Embodiment 1 of placing the wire harness to be tested between the probe front block 1 and the probe rear block 2 and clamping it, and the probe 1-1 piercing the outer insulation layer of the wire harness to be tested, insert the banana male head 9 into the banana female head 8 to complete the parallel connection of a test wire harness to the wire harness to be tested, and then perform an electrostatic discharge test at the end of the wire harness 10 that is not connected to the banana male head 9.

[0036] The above are only embodiments of the present utility model. Specific technical solutions and / or common knowledge such as characteristics well known in the art are not described in detail herein. It should be noted that for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope required by this application shall be subject to the content of its claims, and the specific implementation manners and the like recorded in the specification can be used to interpret the content of the claims.

Claims

1. A harness puncture fixture for automotive electronic electrostatic discharge testing, characterized in that: It comprises a probe, a connecting mechanism and a holding mechanism connected in sequence, wherein the probe comprises a probe front block, a probe rear block and a probe, the connecting mechanism comprises an external connecting tube and an internal connecting rod, and the holding mechanism comprises a handle and a pressing head; The inner connecting rod is located inside the outer connecting tube, the length of the inner connecting rod is greater than the length of the outer connecting tube, the front block of the probe is fixedly connected to one end of the inner connecting rod, the pressing head is fixedly connected to the other end of the inner connecting rod, the rear block of the probe is fixedly connected to one end of the outer connecting tube, the handle is fixedly connected to the other end of the outer connecting tube, and the pressing head is located at the rear side of the handle; The probe rear block and the handle are hollow structures, the inner connecting rod can slide in the probe rear block, the outer connecting tube and the handle, the opposite end faces of the probe front block and the probe rear block can contact, and the probe is fixedly arranged on the opposite end face of the probe front block or the probe rear block.

2. The harness piercing jig for automotive electronic electrostatic discharge testing according to claim 1, characterized in that: A banana female connector is also fixedly arranged on the handle.

3. The wiring harness piercing jig for automotive electronic electrostatic discharge testing according to claim 2, characterized in that: It also includes a test harness, which includes a banana male connector and a harness, wherein the banana male connector is fixedly connected to the harness, and the banana male connector can be plugged into a banana female connector.

4. The harness piercing jig for automotive electronic electrostatic discharge testing according to claim 3 is characterized in that: A spring is arranged between the pressing head and the handle.

5. The wiring harness piercing jig for automotive electronic electrostatic discharge testing according to claim 4, characterized in that: The pressing head has an outer shape of a hollow cylinder with one end closed, the non-closed end of the pressing head is slidably connected to the handle, and the closed end of the pressing head is fixedly connected to the inner connecting rod.

6. The wiring harness piercing jig for automotive electronic electrostatic discharge testing according to claim 5, characterized in that: A pressing handle is also provided on the handle.

7. The wiring harness piercing jig for automotive electronic electrostatic discharge testing according to claim 3, characterized in that: The length of the wiring harness is 1700 mm.

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