Auxiliary tool for testing electrical performance of wire harness

Abstract

The utility model relates to a wire harness electrical performance test auxiliary tool, which comprises a body and a probe assembly, and is characterized in that the body comprises a front cover and a conical sleeve which are connected with each other, the body is internally provided with an accommodating cavity, and the side wall of the conical sleeve is provided with an open groove communicated with the accommodating cavity; the probe assembly comprises a probe and a conical conductive part, the probe comprises a probe body and a tail wing which are connected in sequence, and the conical conductive part is arranged in the containing cavity and matched with the containing cavity in shape; according to the technical scheme, the probe is tightly pressed between the conical sleeve and the conical conductive piece through the tail wing, the front end of the probe body is inserted into the tested connector, and the testing device is connected with the conical conductive piece, so that the auxiliary testing device is converted into a matching terminal of the tested connector, and the matching terminal is perfectly butted with the tested connector; the stability and the accuracy of the electrical performance test are ensured, so that the problem that the working efficiency and the measurement accuracy are influenced by poor contact of a wire binding test method in the electrical performance test of the wire harness is solved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of electrical equipment testing, and particularly to an auxiliary tool for testing the electrical performance of a wire harness. Background Art

[0002] With the increasing complexity of vehicle configurations, there are more and more electronic and electrical components, wire harness plugs are becoming more and more complex and diverse, and the terminals in the plugs are also various in types, sizes and shapes. During the process of troubleshooting in a real vehicle, a multimeter is needed to test the conductivity of the electrical performance of the wire harness. However, the test pen of the currently used multimeter is relatively thick and cannot be directly used in the electrical performance test of the wire harness. Usually, a wire is tied to the test pen, and the core of the wire is used to contact the terminals of the real vehicle wire harness plug to conduct the electrical performance test. However, this method often has poor contact, and multiple people are needed to assist in fitting the wire core and the terminal, which seriously affects the work efficiency and the measurement accuracy. Summary of the Utility Model

[0003] Embodiments of the present disclosure provide an auxiliary tool for testing the electrical performance of a wire harness to at least partially solve the problem that the method of tying a wire for testing in the electrical performance test of the wire harness is prone to poor contact, affecting the work efficiency and the measurement accuracy.

[0004] The specific technical solutions provided by the embodiments of the present disclosure are as follows:

[0005] The present disclosure provides an auxiliary tool for testing the electrical performance of a wire harness, which is used to connect a test device and a connector under test, and includes a body and a probe assembly. The body includes a front cover and a tapered sleeve connected to each other. An axially penetrating accommodation cavity is provided inside the body, and a slot communicating with the accommodation cavity is opened on the side wall of the tapered sleeve. The probe assembly includes a probe and a tapered conductive member. The probe includes a needle body and a tail wing connected in sequence. The width of the tail wing is greater than the width of the needle body. The tapered conductive member is arranged in the accommodation cavity and matches the shape of the accommodation cavity.

[0006] The shape of the slot matches the shape of the probe. The probe enters the accommodation cavity from the slot and is gradually squeezed between the tapered conductive member and the inner wall of the accommodation cavity during the insertion of the tapered conductive member. At least the tail wing is electrically connected to the tapered conductive member, and the front end of the needle body extends out of the front end of the tapered sleeve.

[0007] Preferably, the auxiliary tool further includes a rear cover, at least a part of the rear cover is inserted into the accommodation cavity and is detachably connected to the front cover; the tail end of the tapered conductive member abuts against the rear cover to fix the tapered conductive member in the body.

[0008] Preferably, an external thread is provided along the circumferential direction of at least a part of the outer wall of the rear cover, and an internal thread that mates with the external thread is provided on at least a part of the inner wall of the front cover. The external thread is connected to the internal thread to lock the rear cover and the front cover.

[0009] Preferably, a jack axially opened is provided at the tail end of the conical conductive member for inserting the electric test pen of the test device; a through hole is provided in the rear cover corresponding to the position of the jack, and the diameter of the through hole is larger than the diameter of the electric test pen and smaller than the maximum outer diameter of the conical conductive member.

[0010] Preferably, a plurality of contact elastic pieces are provided along the circumferential direction in the jack, and the middle of each contact elastic piece is recessed towards the axis of the jack, thereby forming an arc-shaped contact surface for abutting against the outer surface of the electric test pen.

[0011] Preferably, at least a part of the surface of the contact elastic piece is provided with a coating.

[0012] Preferably, anti-slip patterns are provided along the circumferential direction on a part of the outer peripheral surface of the front cover.

[0013] Preferably, the front cover and the conical sleeve are integrally injection-molded.

[0014] Preferably, the material of the conical conductive member is copper or aluminum; the materials of the body and the rear cover are plastics.

[0015] The beneficial effects of the present disclosure are as follows:

[0016] By arranging the tail fin to press the probe between the conical sleeve and the conical conductive member, the front end of the needle body is inserted into the connector under test, and the test device is connected to the conical conductive member, that is, the auxiliary test device is converted into the mating terminal of the connector under test, so that it is perfectly docked with the connector under test, ensuring the stability and accuracy of the electrical performance test, thereby solving the problems that in the electrical performance test of the wire harness, the method of tying wires for testing is prone to poor contact, affecting the work efficiency and measurement accuracy. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following will briefly introduce the drawings required to be used in the description of the embodiments. Obviously, the following drawings are only some embodiments of the present disclosure. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the present disclosure;

[0019] Figure 2 It is a schematic diagram of a partial exploded structure of the present disclosure;

[0020] Figure 3 This is a schematic structural diagram of the probe of the present disclosure;

[0021] Figure 4 This is a schematic structural diagram of the body of the present disclosure;

[0022] Figure 5 This is a schematic structural diagram of the rear cover of the present disclosure;

[0023] Figure 6 This is a schematic structural diagram of the conical conductive member of the present disclosure.

[0024] Reference numerals:

[0025] 1. Body; 101. Front cover; 102. Conical sleeve; 103. Accommodating cavity; 104. Groove; 105. Internal thread; 2. Probe assembly; 201. Probe; 201a. Needle body; 201b. Tail fin; 202. Conical conductive member; 202a. Jack; 202b. Contact spring piece; 3. Rear cover; 301. External thread; 302. Through hole; 4. Anti-slip pattern. Detailed implementation manners

[0026] The following describes the preferred embodiments of the present disclosure with reference to the accompanying drawings of the specification. It should be understood that the preferred embodiments described herein are only for the purpose of illustration and explanation of the present disclosure, and are not used to limit the present disclosure. And without conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other.

[0027] This embodiment provides an auxiliary tool for testing the electrical performance of a wire harness, as Figures 1 to 6 shown, for connecting a test device and a connector under test, including a body 1 and a probe assembly 2. The body 1 includes a front cover 101 and a conical sleeve 102 connected to each other. An axially penetrating accommodating cavity 103 is provided inside the body 1, and a groove 104 communicating with the accommodating cavity 103 is opened on the side wall of the conical sleeve 102. The probe assembly 2 includes a probe 201 and a conical conductive member 202. The probe 201 includes a needle body 201a and a tail fin 201b connected in sequence. The width of the tail fin 201b is greater than the width of the needle body 201a. The conical conductive member 202 is disposed in the accommodating cavity 103 and matches the shape of the accommodating cavity 103. The shape of the groove 104 matches the shape of the probe 201. The probe 201 enters the accommodating cavity 103 from the groove 104, and is gradually squeezed between the conical conductive member 202 and the inner wall of the accommodating cavity 103 during the insertion of the conical conductive member 202. At least the tail fin 201b is electrically connected to the conical conductive member 202, and the front end of the needle body 201a extends out of the front end of the conical sleeve 102.

[0028] In this embodiment, the probe 201 and the conical conductive member 202 are both disposed in the accommodation cavity 103. The slotted groove 104 is formed in the side wall of the conical sleeve 102 along the axial direction of the conical sleeve 102, and its shape matches that of the probe 201, facilitating the insertion and fixation of the probe 201. The width of the tail fin 201b of the probe 201 is greater than the width of the needle body 201a, so as to increase the contact area between the probe 201 and the conical conductive member 202, ensuring stable and reliable electrical connection; at the same time, it can also prevent the probe 201 from detaching from the conical sleeve 102 at the slotted groove 104, affecting the use of the auxiliary tool. The shape of the conical conductive member 202 matches the shape of the accommodation cavity 103 to ensure that it can closely fit with the tail fin 201b after insertion, reducing the resistance and improving the reliability of the device. It should be noted that in this embodiment, the connector under test can be a plug terminal, and the test device can be a multimeter.

[0029] During actual use, first, the probe 201 is inserted into the accommodation cavity 103 through the slotted groove 104, and then the conical conductive member 202 is inserted into the accommodation cavity 103. As the conical conductive member 202 is inserted, the probe 201 is gradually squeezed between the conical conductive member 202 and the inner wall of the accommodation cavity 103, and electrical connection is achieved. At this time, at least the tail fin 201b part is electrically connected to the conical conductive member 202, while the front end of the needle body 201a extends out of the front end of the conical sleeve 102 for plugging into the plug terminal. At the same time, the test pen of the multimeter is connected to the conical conductive member 202, and the test data is displayed through the multimeter to complete the test of the electrical performance of the wire harness.

[0030] Through the above technical solution, the probe 201 is pressed between the conical sleeve 102 and the conical conductive member 202 by the provided tail fin 201b. The front end of the needle body 201a is inserted into the connector under test, and the test device is connected to the conical conductive member 202, that is, the auxiliary test device is converted into a mating terminal of the connector under test, making it perfectly dock with the connector under test, ensuring the stability and accuracy of the electrical performance test, thereby solving the problem that in the electrical performance test of the wire harness, the method of tying wires for testing is prone to poor contact, affecting the work efficiency and measurement accuracy.

[0031] In some embodiments, referring to Figure 2 、 Figure 4 and Figure 5 , the auxiliary tool further includes a rear cover 3. At least a part of the rear cover 3 is inserted into the accommodation cavity 103 and is detachably connected to the front cover 101. The tail end of the conical conductive member 202 abuts against the rear cover 3 to fix the conical conductive member 202 in the main body 1. This design not only facilitates the staff to replace and repair the probe assembly 2, but also can ensure that the conical conductive member 202 will not loosen or fall off during the test, improving the reliability of the device.

[0032] In some embodiments, referring to Figure 1 、Figure 4 and Figure 5 At least part of the outer wall of the rear cover 3 is provided with an external thread 301 along its circumference, and at least part of the inner wall of the front cover 101 is provided with an internal thread 105 that matches the external thread 301, and the external thread 301 is connected with the internal thread 105 to lock the rear cover 3 with the front cover 101. The rear cover 3 and the front cover 101 are detachably connected by thread connection, which has a simple structure, reliable connection, convenient assembly and disassembly, and can further improve work efficiency.

[0033] In order to facilitate the connection between the test pen and the tapered conductive member 202, in some embodiments, refer to Figure 2 and Figure 5 The tail end of the conical conductive member 202 is provided with a socket 202a opened along its axial direction for the test pen of the test device to be inserted. At the same time, in order to facilitate the insertion and removal of the test pen, the rear cover 3 is provided with a via 302 at the position corresponding to the socket 202a. Furthermore, the diameter of the via 302 is larger than the diameter of the test pen and smaller than the maximum outer diameter of the conical conductive member 202. This arrangement can ensure that the test pen is smoothly inserted into the socket 202a, and the conical conductive member 202 will not be separated from the accommodating cavity 103 through the via 302, thereby improving the reliability of the device.

[0034] In some embodiments, Figure 6 As shown, a plurality of contact springs 202b are arranged along the circumference of the socket 202a, and the middle part of each contact spring 202b is recessed toward the axial direction of the socket 202a, thereby forming an arc-shaped contact surface for contacting the outer surface of the test pen. In this embodiment, a plurality of contact springs 202b are arranged at equal intervals, and the elastic force is applied stably, thereby improving the stability of the electrical connection between the contact spring 202b and the test pen. When the test pen is inserted into the socket 202a, the arc-shaped contact surface abuts against the outer wall of the test pen, and the contact spring 202b applies elastic force to the test pen from multiple directions to clamp it, so that the mutually plugged test pen and the conical conductive member 202 have a greater plug-in and pull-out force, thereby preventing the test pen from accidentally detaching from the socket 202a and ensuring the accuracy of the electrical performance test.

[0035] In order to enhance the wear resistance and conductivity of the contact spring 202b, in some embodiments, at least part of the surface of the contact spring 202b may be provided with a coating. The provision of the coating further increases the stability and service life of the device. It should be understood that in this embodiment, the material of the coating may be selected from metals such as tin and silver that have good conductivity and corrosion resistance. In other embodiments, metals of other materials may also be selected. The design may be based on actual needs and is not limited here.

[0036] In some embodiments, Figure 1As shown, anti-slip patterns 4 are provided along the circumferential direction on a partial outer peripheral surface of the front cover 101. The provision of the anti-slip patterns 4 helps to provide better grip and stability during the use of auxiliary tools, further improving work efficiency.

[0037] In some embodiments, the front cover 101 and the conical sleeve 102 are integrally injection molded. Using the integrally injection molding technology to connect the front cover 101 and the conical sleeve 102 into a whole can ensure a firm structure and good sealing performance, further improving the reliability of the device.

[0038] In some embodiments, the material of the conical conductive member 202 is copper or aluminum; the materials of the body 1 and the rear cover 3 are plastics. The conical conductive member 202 made of copper or aluminum can provide excellent electrical conductivity. The body 1 and the rear cover 3 made of plastics can reduce the overall weight and cost, and at the same time ensure the safety during use.

[0039] Although the preferred embodiments of the present disclosure have been described, those skilled in the art can make additional changes and modifications once they learn the basic creative concepts. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and modifications falling within the scope of the present disclosure.

[0040] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present disclosure without departing from the spirit and scope of the embodiments of the present disclosure. Thus, if these modifications and variations of the embodiments of the present disclosure fall within the scope of the claims of the present disclosure and their equivalent technologies, the present disclosure also intends to include these modifications and variations.

Claims

1. A wiring harness electrical performance test auxiliary tool, used to connect a test device and a connector under test, characterized in that: The probe assembly comprises a body and a probe assembly, wherein the body comprises a front cover and a conical sleeve connected to each other, an axially penetrating accommodation cavity is arranged inside the body, and a slot communicating with the accommodation cavity is arranged on the side wall of the conical sleeve; the probe assembly comprises a probe and a conical conductive member, wherein the probe comprises a needle body and a tail wing connected in sequence, wherein the tail wing has a width greater than that of the needle body, and the conical conductive member is arranged in the accommodation cavity and matches the shape of the accommodation cavity; The shape of the slot matches the shape of the probe. The probe enters the accommodating cavity from the slot and is gradually squeezed between the conical conductive part and the inner wall of the accommodating cavity during the insertion of the conical conductive part. At least the tail wing is electrically connected to the conical conductive part, and the front end of the needle body extends out of the front end of the conical sleeve.

2. The wiring harness electrical performance test auxiliary tool according to claim 1, characterized in that: The auxiliary tool also includes a rear cover, at least a portion of which is inserted into the accommodating cavity and detachably connected to the front cover; the tail end of the conical conductive member abuts against the rear cover to fix the conical conductive member in the body.

3. The wiring harness electrical performance test auxiliary tool according to claim 2, characterized in that: At least part of the outer wall of the rear cover is provided with external threads along its circumference, and at least part of the inner wall of the front cover is provided with internal threads matching with the external threads, and the external threads are connected with the internal threads to lock the rear cover and the front cover.

4. The wiring harness electrical performance test auxiliary tool according to claim 2, characterized in that: The tail end of the conical conductive member is provided with a socket opened along its axial direction for the electric test pen of the test device to be inserted; the rear cover is provided with a via hole at a position corresponding to the socket, and the diameter of the via hole is larger than the diameter of the electric test pen and smaller than the maximum outer diameter of the conical conductive member.

5. The wiring harness electrical performance test auxiliary tool according to claim 4, characterized in that: A plurality of contact springs are arranged in the jack along its circumference, and the middle of each contact spring is recessed toward the axial direction of the jack, thereby forming an arc-shaped contact surface for abutting against the outer surface of the electric test pen.

6. The wiring harness electrical performance test auxiliary tool according to claim 5, characterized in that: At least part of the surface of the contact spring is provided with a coating.

7. The wiring harness electrical performance test auxiliary tool according to claim 1, characterized in that: Anti-slip grooves are arranged on a portion of the outer peripheral surface of the front cover along the circumference thereof.

8. The wiring harness electrical performance test auxiliary tool according to claim 1, characterized in that: The front cover and the tapered sleeve are integrally injection-molded.

9. The wiring harness electrical performance test auxiliary tool according to claim 2, characterized in that: The material of the conical conductive part is copper or aluminum; the material of the main body and the back cover is plastic.

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