Wire harness on-off test tool

Abstract

The utility model discloses a wire harness on-off test tool, which comprises a test machine, a detection line, a circuit board and a wire harness to be tested, two ends of the detection line are respectively connected with the test machine and the circuit board, the circuit board is used for connecting the wire harness to be tested, and the test machine, the detection line and the circuit board are matched to detect on-off conditions of the wire harness to be tested. The testing machine and the circuit board are connected together through the detection line and the plugs at the two ends of the detection line, then the wire harness to be tested is connected with the circuit board, then the testing machine is started, the circuit board is electrified, current passes through the wire harness to be tested and then returns to the testing machine, a testing loop is formed, and the testing machine analyzes the conditions of current, voltage and the like in the loop. Furthermore, the test circuit of the circuit board is provided with a light-emitting diode, and a user can determine the on-off condition of the current circuit by observing the on-off condition of the light-emitting diode, so that the on-off condition of the circuit is more intuitive.

Description

Technical Field

[0001] The utility model relates to the technical field of line detection, in particular to a wiring harness continuity test tool. Background Art

[0002] A wiring harness is a group of metal wires and cables tied together to connect signals and power between carrying devices. It is a wiring component that connects various electrical devices in the automotive circuit. It consists of an insulating sheath, terminal blocks, wires, and insulating wrapping materials. The wiring harness plug-ins currently used are generally 12-pin, 24-pin, and 36-pin standard plug-ins. There are input and output connectors at both ends of the wiring harness. The wiring harness needs to be tested before use.

[0003] Prior art publication number CN206832921U discloses a module sampling harness continuity test tool, including a circuit board, on which one or more test units are arranged. Any test unit includes a connector and a printed circuit corresponding to the number of connector pins. The connector is fixed on the circuit board and matches the sampling harness connector. A test point is set at one end of the printed circuit, and the other end is connected to each pin of the connector output end.

[0004] The above-mentioned device detects the continuity of the wiring harness through the circuit board and the printed circuit on the board. During the detection, the test leads of the multimeter need to touch the test points one by one to determine the continuity of a certain wire in the wiring harness corresponding to the current test point. However, there are many wires in the wiring harness, and testing them one by one is time-consuming and labor-intensive. In addition, the testing process is affected by human factors, and it is difficult to ensure the accuracy of the test results. At the same time, the above-mentioned device needs to observe the values ​​displayed by the multimeter and analyze them to determine the continuity of the wires. The test results are not intuitive enough. Utility Model Content

[0005] The purpose of the present invention is to provide a wiring harness continuity test tool to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A wiring harness continuity test tool comprises a test machine, a detection line, a circuit board and a wiring harness to be tested, wherein the two ends of the detection line are respectively connected to the test machine and the circuit board, and the circuit board is used to connect the wiring harness to be tested. The test machine, the detection line and the circuit board cooperate to detect the continuity of the wiring harness to be tested, and the circuit board is used to further clarify the continuity of one or several wires in the wiring harness to be tested.

[0008] As a further solution of the present invention: a test circuit is provided on the upper surface of the circuit board, and the test circuit is used to detect the continuity of each wire in the wiring harness to be tested. The test circuit includes an input circuit and an output circuit. The input circuit and the output circuit are both composed of multiple single circuits, and each of the circuits is provided with a corresponding label. Each single circuit in the output circuit is connected in parallel with a light-emitting diode, and multiple light-emitting diodes are located above the circuit board.

[0009] As a further solution of the present invention: the wiring harness to be tested is composed of multiple wires, one end of which is provided with an input connector connected to each wire, and the other end is provided with an output connector connected to each wire. One side of the circuit board is respectively provided with an embedded input socket and an embedded output socket matching the input connector and the output connector. The input connector is plugged into the embedded input socket, and the output connector is plugged into the embedded output socket.

[0010] As a further solution of the present invention: the built-in input socket and the built-in output socket are both provided with multiple jacks, and the input plug terminals and the output plug terminals are both provided with multiple plug rods. The number of the jacks and the number of the plug rods are consistent with the number of wires in the wiring harness to be tested, and are connected one-to-one.

[0011] As a further solution of the present invention: the number of single circuits in the input circuit and the output circuit is consistent with the number of jacks in the built-in input socket and the built-in output socket, and they are connected in a one-to-one correspondence.

[0012] As a further solution of the present invention: several multi-pin sockets are provided on the testing machine, an output multi-pin socket is fixed on the other side of the circuit board, and an input multi-porous plug and an output multi-porous plug are respectively provided at both ends of the detection line. The input multi-porous plug is plugged into the output multi-pin socket, and the output multi-porous plug is plugged into the multi-pin socket.

[0013] As a further solution of the present invention: the input circuit and the output circuit are respectively connected to an input connection circuit and an output connection circuit at one end away from the built-in input socket and the built-in output socket, the input connection circuit is connected in parallel with multiple single circuits in the input circuit, the output connection circuit is connected in parallel with multiple single circuits in the output circuit, and the input connection circuit and the output connection circuit are respectively electrically connected to the output multi-pin socket.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] 1. In the present invention, the tester is connected to the circuit board through the detection line and the plugs at both ends, and then the wiring harness to be tested is connected to the circuit board. The tester is then turned on and the circuit board is energized. The current passes through the wiring harness to be tested and then returns to the tester, forming a test loop. The tester analyzes the current and voltage in the loop to determine the continuity of the wiring harness to be tested. Furthermore, a light-emitting diode is installed on the test circuit of the circuit board. The user can determine the continuity of the current circuit by observing the blinking of the light-emitting diode. Then, according to the label of the current circuit, the user can find the corresponding wire in the wiring harness to be tested, thereby determining the continuity of the current wire.

[0016] 2. In the present invention, the test machine, the test line and the circuit board are detachably connected and independent of each other. The user can use one or several components according to the needs, which is convenient to use. When one of the components fails, it can be replaced at any time to ensure the accuracy of the wiring harness detection results. At the same time, the socket on the side of the circuit board can be designed accordingly according to the specifications of the wiring harness to be tested. For example, if the wiring harness is 12pin, a 12-pin socket can be designed accordingly on the circuit board. Alternatively, multiple types of sockets can be preset directly on the circuit board, such as 12pin, 24pin and 36pin, etc., which can be determined according to the current mainstream wiring harness standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a schematic structural diagram of the utility model from the first perspective.

[0019] Figure 2 This is a schematic structural diagram of the second viewing angle of the present invention.

[0020] Figure 3 This is a first perspective view of the expanded structure of the circuit board in the utility model.

[0021] Figure 4 This is a second perspective view of the expanded structure of the circuit board in the present invention.

[0022] Figure 5 It is a structural diagram of the test circuit in the utility model.

[0023] Notes on the accompanying drawings: 1-testing machine, 11-multi-pin socket, 2-testing line, 21-input multi-hole plug, 22-output multi-hole plug, 3-circuit board, 31-test circuit, 311-input circuit, 312-output circuit, 313-input connection circuit, 314-output connection circuit, 315-light-emitting diode, 32-output multi-pin socket, 33-embedded input socket, 34-embedded output socket, 4-wiring harness to be tested, 41-input connector terminal, 42-output connector terminal. DETAILED DESCRIPTION

[0024] The following embodiments will be described in detail with reference to the accompanying drawings. Similar or identical parts are denoted by the same reference numerals in the drawings and descriptions. In actual applications, the shape, thickness, or height of each component may be enlarged or reduced. The embodiments listed in the present invention are intended only to illustrate the present invention and are not intended to limit its scope. Any obvious modifications or variations to the present invention do not depart from the spirit and scope of the present invention.

[0025] Example 1

[0026] See also Figure 1 、 Figure 2 In an embodiment of the utility model, a wiring harness continuity test tool includes a testing machine 1, a detection line 2, a circuit board 3 and a wiring harness to be tested 4. The testing machine 1 is provided with a plurality of multi-pin sockets 11 for connecting the detection line 2, and the other end of the detection line 2 is connected to the circuit board 3. The circuit board 3 is used to connect the wiring harness to be tested 4. The testing machine 1, the detection line 2 and the circuit board 3 cooperate to detect the continuity of the wiring harness to be tested 4, and the circuit board 3 is used to further clarify the continuity of one or several wires in the wiring harness to be tested 4.

[0027] See also Figure 3 、 Figure 4 The wiring harness 4 to be tested is composed of a plurality of wires, one end of which is provided with an input plug terminal 41 connected to each wire, and the other end is provided with an output plug terminal 42 connected to each wire. One side of the circuit board 3 is provided with an embedded input socket 33 and an embedded output socket 34 matching the input plug terminal 41 and the output plug terminal 42, respectively. The input plug terminal 41 is plugged into the embedded input socket 33, and the output plug terminal 42 is plugged into the embedded output socket 34. The embedded input socket 33 and the embedded output socket 34 are both provided with a plurality of jacks, and the input plug terminal 41 and the output plug terminal 42 are both provided with a plurality of plug rods. The number of jacks and the number of plug rods are consistent with the number of wires in the wiring harness 4 to be tested, and are connected one-to-one.

[0028] An output multi-pin socket 32 ​​is fixed to the other side of the circuit board 3. A test circuit 31 is provided on the top surface of the circuit board 3. One end of the test circuit 31 is electrically connected to the built-in input socket 33 and the built-in output socket 34 via wires, and the other end of the test circuit 31 is electrically connected to the output multi-pin socket 32 ​​via wires.

[0029] The two ends of the detection line 2 are respectively provided with an input end multi-porous plug 21 and an output end multi-porous plug 22. The input end multi-porous plug 21 is plugged into the output end multi-pin socket 32, and the output end multi-porous plug 22 is plugged into the multi-pin socket 11.

[0030] In this embodiment, the test machine 1 is connected to the circuit board 3 through the detection line 2 and the plugs at both ends of the detection line 2, and then the wiring harness 4 to be tested is connected to the circuit board 3. Then the test machine 1 is turned on and the circuit board 3 is energized. The current passes through the wiring harness 4 to be tested and returns to the test machine 1 to form a test loop. The test machine 1 analyzes the current, voltage and other conditions in the loop, and then determines the on-off status of the wiring harness 4 to be tested. In this device, the test machine 1, the detection line 2 and the circuit board 3 are detachably connected and independent of each other. The user can use one or several components as needed, which is convenient for use. When a component fails, it can be replaced at any time to ensure the accuracy of the wiring harness detection results. At the same time, the socket on the side of the circuit board 3 can be designed accordingly according to the specifications of the wiring harness 4 to be tested. For example, if the wiring harness is 12pin, a 12pin socket can be designed accordingly on the circuit board 3. Alternatively, multiple types of sockets can be directly preset on the circuit board 3, such as 12pin, 24pin and 36pin, etc., which can be determined according to the current mainstream wiring harness standards.

[0031] Example 2

[0032] See also Figure 5 Based on Example 1, the test circuit 31 includes an input circuit 311 and an output circuit 312. The input circuit 311 and the output circuit 312 are each composed of multiple single circuits, and each circuit is provided with a corresponding label. The multiple single circuits can directly use wires or circuits made of other conductive materials. These circuits are encapsulated and insulated by the circuit board 3. The number of single circuits in the input circuit 311 and the output circuit 312 is consistent with the number of jacks in the embedded input socket 33 and the embedded output socket 34, and are connected one-to-one. Each single circuit in the output circuit 312 is connected in parallel with a light-emitting diode 315, and the multiple light-emitting diodes 315 are all located above the circuit board 3.

[0033] In this embodiment, the user can determine the on / off status of the current circuit by observing the blinking of the light-emitting diode 315, and then find the corresponding wire in the wiring harness 4 to be tested according to the label of the current circuit, thereby determining the on / off status of the current wire;

[0034] The input circuit 311 and the output circuit 312 are connected to the input connection circuit 313 and the output connection circuit 314 at one end away from the embedded input socket 33 and the embedded output socket 34, respectively. The input connection circuit 313 is connected in parallel with multiple single circuits in the input circuit 311, and the output connection circuit 314 is connected in parallel with multiple single circuits in the output circuit 312. The input connection circuit 313 and the output connection circuit 314 are respectively electrically connected to the output multi-pin socket 32. The input connection circuit 313 and the output connection circuit 314 are made of the same material as the input circuit 311 and the output circuit 312, and are also encapsulated and insulated by the circuit board 3.

[0035] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0036] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A wiring harness continuity test tool, comprising a test machine (1), a detection line (2), a circuit board (3) and a wiring harness to be tested (4), characterized in that: The two ends of the detection line (2) are respectively connected to the test machine (1) and the circuit board (3); the circuit board (3) is used to connect the wiring harness to be tested (4); the test machine (1), the detection line (2) and the circuit board (3) cooperate to detect the continuity of the wiring harness to be tested (4); and the circuit board (3) is used to further clarify the continuity of one or several wires in the wiring harness to be tested (4).

2. The wiring harness continuity test tool according to claim 1, characterized in that: A test circuit (31) is provided on the upper surface of the circuit board (3). The test circuit (31) is used to detect the on / off status of each wire in the wiring harness (4) to be tested. The test circuit (31) includes an input circuit (311) and an output circuit (312). The input circuit (311) and the output circuit (312) are both composed of a plurality of single circuits, and each of the circuits is provided with a corresponding label. Each single circuit in the output circuit (312) is connected in parallel with a light-emitting diode (315), and the plurality of light-emitting diodes (315) are all located above the circuit board (3).

3. The wiring harness continuity test tool according to claim 2, characterized in that: The wiring harness (4) to be tested is composed of a plurality of wires, one end of which is provided with an input connector (41) connected to each wire, and the other end of which is provided with an output connector (42) connected to each wire. One side of the circuit board (3) is provided with an embedded input socket (33) and an embedded output socket (34) respectively matching the input connector (41) and the output connector (42). The input connector (41) is plugged into the embedded input socket (33), and the output connector (42) is plugged into the embedded output socket (34).

4. The wiring harness continuity test tool according to claim 3, characterized in that: The embedded input socket (33) and the embedded output socket (34) are both provided with a plurality of jacks, and the input plug terminal (41) and the output plug terminal (42) are both provided with a plurality of plug rods, and the number of the jacks and the number of the plug rods are consistent with the number of wires in the wiring harness (4) to be tested, and are connected in a one-to-one correspondence.

5. The wiring harness continuity test tool according to claim 4, characterized in that: The number of single circuits in the input circuit (311) and the output circuit (312) is consistent with the number of jacks in the built-in input socket (33) and the built-in output socket (34), and they are connected in a one-to-one correspondence.

6. The wiring harness continuity test tool according to claim 5, characterized in that: The test machine (1) is provided with a plurality of multi-pin sockets (11), an output multi-pin socket (32) is fixed on the other side of the circuit board (3), and an input multi-hole plug (21) and an output multi-hole plug (22) are respectively provided at both ends of the detection line (2), the input multi-hole plug (21) is plugged into the output multi-pin socket (32), and the output multi-hole plug (22) is plugged into the multi-pin socket (11).

7. The wiring harness continuity test tool according to claim 6, characterized in that: One end of the input circuit (311) and the output circuit (312) away from the built-in input socket (33) and the built-in output socket (34) is respectively connected to an input end connection circuit (313) and an output end connection circuit (314); the input end connection circuit (313) is connected in parallel with a plurality of single circuits in the input circuit (311); the output end connection circuit (314) is connected in parallel with a plurality of single circuits in the output circuit (312); the input end connection circuit (313) and the output end connection circuit (314) are respectively electrically connected to the output end multi-pin socket (32).

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