Low-voltage wire harness switching device

Abstract

The utility model relates to the technical field of electric drive testing, and provides a low-voltage wire harness switching device, which comprises a box body, one side of the box body is provided with a first crimping terminal used for being communicated with a CAN wire of a low-voltage wire harness, the opposite side of the box body is provided with a first connecting terminal, the first crimping terminal is connected with the first connecting terminal through a first CAN extension wire harness, and the second crimping terminal is connected with the first connecting terminal through a second CAN extension wire harness. The first connecting terminal is used for being connected with a test bed through an external connecting wire; one side of the box body is further provided with a second crimping terminal used for being communicated with a low-voltage power line of the low-voltage wire harness, the opposite side of the box body is provided with a power port, the second crimping terminal is connected with the power port through a low-voltage power supply extension wire harness, and the power port is used for being connected with a test bed through an external wire. According to the technical scheme, the low-voltage wire harness switching device can save the welding time, and meanwhile, the test operation efficiency can be improved.

Description

Technical Field

[0001] The present application relates to the field of electric drive testing technology, and in particular to a low-voltage wiring harness adapter. Background Art

[0002] In the new energy electric drive test, the test harness connection is complex, among which the low-voltage harness is extremely easy to be damaged and interfered with, resulting in the loss of the motor MCU signal. The low-voltage harness is a test spare part, and the loss and usage are also very large. The low-voltage harness includes multiple thin wires, generally including CAN-L line, CAN-H line, low-voltage harness positive line and negative line, etc. Among them, CAN-L line and CAN-H line can be collectively referred to as CAN line, and the low-voltage harness positive line and low-voltage harness negative line can be collectively referred to as low-voltage power line.

[0003] Currently, the low-voltage wiring harnesses used in laboratory testing are all semi-finished products. One end has a terminal for directly plugging into the electric drive, while the other end requires manual welding of the CAN-L line, CAN-H line, low-voltage wiring harness positive line, and negative line to the test bench. The welding process is complicated and takes up test time. Utility Model Content

[0004] The technical problem to be solved by the present application is to provide a low-voltage wire harness adapter that can save welding time and also improve the efficiency of test operations.

[0005] To solve the above technical problems, this application adopts the following technical solutions:

[0006] The present application provides a low-voltage wiring harness adapter device, comprising: a box body, wherein one side of the box body is provided with a first crimping terminal for connecting a CAN line of a low-voltage wiring harness, and the opposite side is provided with a first connecting terminal, the first crimping terminal and the first connecting terminal are connected via a first CAN extension wiring harness, and the first connecting terminal is used to connect to a test bench via an external wiring harness; one side of the box body is also provided with a second crimping terminal for connecting a low-voltage power line of the low-voltage wiring harness, and the opposite side is provided with a power port, the second crimping terminal and the power port are connected via a low-voltage power extension wiring harness, and the power port is used to connect to a test bench via an external wiring harness.

[0007] As an embodiment, the first crimping terminal includes a connecting seat, which is fixedly connected to the box body and is provided with a plurality of accommodating grooves. The first crimping terminal also includes a plurality of crimping blocks for crimping CAN-H lines and CAN-L lines of the CAN line. The crimping blocks are arranged at the position of the accommodating grooves and can rotate relative to the connecting seat.

[0008] As an embodiment, the crimping block is connected to the connecting seat via a rotating shaft, and the distance between the end face of the crimping block facing the bottom wall of the accommodating groove and the bottom wall of the accommodating groove is smaller than the diameter of the CAN-H line and the CAN-L line.

[0009] As an embodiment, the structure of the second crimping terminal is the same as that of the first crimping terminal.

[0010] As an embodiment, the first CAN extension harness is connected to the connection seat, and the core of the first CAN extension harness is located in the accommodating groove; the low-voltage power extension harness is connected to the connection seat of the second crimping terminal.

[0011] As an embodiment, the first connecting terminal is provided with a plurality of plug holes for connecting to the first CAN extension harness at one end thereof facing the first crimping terminal.

[0012] As an embodiment, a magnetic ring is further provided in the box, and the first CAN extension harness and the low-voltage power supply extension harness pass through the magnetic ring.

[0013] As an embodiment, the magnetic ring is fixedly connected to the box through a fixing frame.

[0014] As an embodiment, a third crimping terminal is further provided beside the first crimping terminal, a second connecting terminal is further provided beside the first connecting terminal, and the third crimping terminal is connected to the second connecting terminal through a second CAN extension harness.

[0015] As an embodiment, the top of the box is provided with an opening.

[0016] The technical solution of this application has the following beneficial effects:

[0017] One side of the box body is provided with a first crimping terminal for connecting the CAN line of the low-voltage wiring harness, wherein the CAN line of the low-voltage wiring harness includes a CAN-L line and a CAN-H line, and the opposite side is also provided with a first connecting terminal, the first crimping terminal and the first connecting terminal are connected through a first CAN extension wiring harness, and the other end of the first connecting terminal is directly connected to the test bench through an external wiring; one side of the box body is also provided with a second crimping terminal for connecting the low-voltage power line of the low-voltage wiring harness, wherein the low-voltage power line of the low-voltage wiring harness includes a low-voltage wiring harness positive line and a low-voltage wiring harness negative line, and the opposite side is provided with a power port, and the second crimping terminal and the power port are connected through a low-voltage The power extension harness is connected, and the other end of the power port is used to connect to the test bench through an external wire. In this way, when the electric drive needs to be tested, one end of the low-voltage harness with a terminal is directly inserted into the electric drive, and the other end is connected to the first connection terminal and the power port through the first crimping terminal and the second crimping terminal respectively. Since the first connection terminal and the power port are already connected to the test bench through the external wire, the electric drive also completes the connection test of the test bench. At the same time, during the connection process, the low-voltage harness does not need to be connected to the test bench by welding, but is connected with the low-voltage harness adapter provided by the present application, which is convenient for connection and reduces the test time.

[0018] In addition, since the low-voltage wiring harness does not require welding, it can be reused repeatedly and does not need to be replaced for each test, thereby reducing the waste of low-voltage wiring harnesses during the electric drive test process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 A schematic structural diagram of a low-voltage wiring harness adapter provided in an embodiment of the present application;

[0021] Figure 2 A schematic diagram of a partially exploded structure of a low-voltage wiring harness adapter provided in an embodiment of the present application;

[0022] Figure 3 Schematic diagram of the structure of the low-voltage wiring harness adapter provided by the embodiment of the present application from different perspectives;

[0023] Figure 4 A structural schematic diagram of the low-voltage wiring harness adapter provided in an embodiment of the present application from another perspective.

[0024] Icons: 1-box; 2-first crimping terminal; 21-connecting seat; 22-accommodating groove; 23-crimping block; 3-second crimping terminal; 4-third crimping terminal; 5-first connecting terminal; 6-second connecting terminal; 7-power port; 8-CAN line; 81-CAN-L line; 82-CAN-H line; 9-first CAN extension harness; 10-low-voltage power extension harness; 11-low-voltage power line; 12-magnetic ring; 13-fixing bracket. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0026] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and should not be understood as indicating or implying relative importance.

[0027] like Figure 1 As shown, an embodiment of the present application provides a low-voltage wiring harness adapter device. The low-voltage wiring harness generally includes multiple strands of thin wires, for example, a CAN-L line 81, a CAN-H line 82, a low-voltage wiring harness positive line and a low-voltage wiring harness negative line, etc. The low-voltage wiring harness adapter device includes a box body 1, and the box body 1 includes four side walls and a bottom wall. One of the side walls is provided with a first crimping terminal 2 for connecting the CAN line 8 of the low-voltage wiring harness, and a first connecting terminal 5 is also provided on the opposite side. The first crimping terminal 2 and the first connecting terminal 5 are connected through a first CAN extension harness 9, and the other end of the first connecting terminal 5 is directly connected to the test bench through an external wiring; one side of the box body 1 is also provided with a second crimping terminal 3 for connecting the low-voltage power line 11 of the low-voltage wiring harness, and a power port 7 is provided on the opposite side. The second crimping terminal 3 and the power port 7 are connected through a low-voltage power extension harness 10, and the power port 7 The other end is used to connect to the test bench through an external wiring. In this way, when the electric drive needs to be tested, one end of the low-voltage wiring harness terminal is directly inserted into the electric drive, and the other end is connected to the first connection terminal 5 and the power port 7 through the first crimping terminal 2 and the second crimping terminal 3 respectively. Since the first connection terminal 5 and the power port 7 have been connected to the test bench through the external wiring, when the low-voltage wiring harness is connected to the first crimping terminal 2 and the second crimping terminal 3, it is connected to the first connection terminal 5 and the power port 7 respectively through the first CAN extension wiring harness 9 and the low-voltage power extension wiring harness 10, and then connected to the test bench through the external wiring. The electric drive also completes the connection test of the test bench. At the same time, during the connection process, the low-voltage wiring harness does not need to be connected to the test bench by welding, but is connected by means of the low-voltage wiring harness adapter provided in the embodiment of the present application, which makes the connection convenient and reduces the test time.

[0028] In addition, since the low-voltage wiring harness does not require welding, it can be reused repeatedly and does not need to be replaced for each test, thereby reducing the waste of low-voltage wiring harnesses during the electric drive test process.

[0029] Optionally, the CAN line 8 includes a CAN-L line 81 and a CAN-H line 82 , and the low-voltage power line 11 includes a low-voltage harness positive line and a low-voltage harness negative line.

[0030] Optionally, one end of the external wire connected to the first connecting terminal 5 has a terminal, which can be directly plugged into the first connecting terminal 5; similarly, the external wire connected to the power port 7 has a terminal that is compatible with the power port 7 and can be directly plugged into the power port 7. In this way, the external wire connection between the low-voltage wiring harness adapter and the test bench does not need to be repeatedly plugged and unplugged, but can always be in a connected state, which can reduce the test time and also reduce the damage to the external wire connection.

[0031] Optionally, the external wire connected to the power port 7 generally includes a positive wire and a negative wire, which are respectively inserted into the positive pole and negative pole of the power port 7.

[0032] like Figure 1 and 2 As shown, as an embodiment, the first crimping terminal 2 includes a connecting seat 21, which is fixedly connected to the box body 1, and the connecting seat 21 is provided with a plurality of accommodating grooves 22. The first crimping terminal 2 also includes a plurality of crimping blocks 23 for crimping the CAN-H line 82 and the CAN-L line 81 of the CAN line 8. The crimping blocks 23 are arranged at the position of the accommodating groove 22 and can be rotated relative to the connecting seat 21, so that the CAN-H line 82 and the CAN-L line 81 in the low-voltage wiring harness can be crimped to achieve connectivity with the test bench. There is no need to connect to the test bench by welding, which reduces the test time and facilitates installation and disassembly. At the same time, the low-voltage wiring harness can be reused, which also reduces costs.

[0033] like Figure 2 As shown, as an embodiment, the crimping block 23 is connected to the connecting seat 21 through a rotating shaft, and the distance between the end face of the crimping block 23 facing the bottom wall of the accommodating groove 22 and the bottom wall of the accommodating groove 22 is smaller than the diameter of the CAN-H line 82 and the CAN-L line 81. In this way, when the crimping block 23 rotates, the CAN-H line 82 and the CAN-L line 81 can be squeezed into the accommodating groove 22 to prevent the CAN-H line 82 and the CAN-L line 81 from falling off.

[0034] As an embodiment, the structure of the second crimping terminal 3 is the same as that of the first crimping terminal 2. In this way, the second crimping terminal 3 can simultaneously press the low-voltage wire harness positive wire and the low-voltage wire harness negative wire of the low-voltage wire harness together with the first crimping terminal 2 to prevent the low-voltage wire harness positive wire and the low-voltage wire harness negative wire from falling off.

[0035] like Figure 2 As shown, as an embodiment, the first CAN extension harness 9 is connected to the connecting seat 21, and the core of the first CAN extension harness 9 is located in the accommodating groove 22. In this way, when the CAN-H line 82 and the CAN-L line 81 of the low-voltage harness are respectively placed in the accommodating groove 22, they can contact the core of the first CAN extension harness 9 to achieve electrical connection without welding. The stability of the CAN-H line 82 and the CAN-L line 81 of the low-voltage harness is improved by tightening the crimping block 23 to prevent the CAN-H line 82 and the CAN-L line 81 of the low-voltage harness from falling off. Similarly, the low-voltage power extension harness 10 is connected to the connecting seat 21 of the second crimping terminal 3. In this way, when the positive line of the low-voltage harness and the negative line of the low-voltage harness are respectively placed in the accommodating groove of the second crimping terminal 3, they can be connected to the low-voltage power extension harness 10.

[0036] Optionally, the core of the low-voltage power extension harness 10 is also exposed in the accommodating groove of the second crimping terminal 3, so as to facilitate contact and communication with the positive wire and the negative wire of the low-voltage harness.

[0037] like Figure 1 As shown, optionally, the first CAN extension harness 9 includes two thin wires, one of which is used to connect with the CAN-H line 82, and the other is used to connect with the CAN-L line 81, and the low-voltage power extension harness 10 also includes two thin wires, one of which is connected with the positive line of the low-voltage harness, and the other is used to connect with the negative line of the low-voltage harness.

[0038] As an embodiment, the first connecting terminal 5 is provided with a plurality of plug holes for connecting with the first CAN extension harness 9 at one end facing the first crimping terminal 2 , so as to facilitate the plug-in matching between the first CAN extension harness 9 and the first connecting terminal 5 .

[0039] like Figure 4 As shown, as an embodiment, a magnetic ring 12 is further provided in the box body 1, and the first CAN extension harness 9 and the low-voltage power extension harness 10 pass through the magnetic ring 12, thereby reducing the problem of electromagnetic interference to the first CAN extension harness 9 and the low-voltage power extension harness 10 and improving the stability of signal transmission by the first CAN extension harness 9 and the low-voltage power extension harness 10.

[0040] As an implementation manner, the magnetic ring 12 is fixedly connected to the box body 1 through a fixing frame 13 , thereby improving the stability of the magnetic ring 12 .

[0041] Optionally, the magnetic ring 12 may also be connected to the box body 1 by gluing.

[0042] like Figure 3As shown, as an embodiment, a third crimping terminal 4 is further provided next to the first crimping terminal 2, and a second connecting terminal 6 is further provided next to the first connecting terminal 5. The third crimping terminal 4 is connected to the second connecting terminal 6 through a second CAN extension harness, thereby increasing the number of connections of the low-voltage harness, and conducting tests on some electric drives that need to be connected through an additional CAN line 8.

[0043] Optionally, the third crimping terminal 4 is located between the first crimping terminal 2 and the second crimping terminal 3 to facilitate the connection of the CAN line 8 .

[0044] As an embodiment, an opening is provided on the top of the box body 1, so as to facilitate the inspection and maintenance of the parts inside the box body 1. In addition, it is also convenient to replace the first CAN extension harness 9, the second CAN extension harness and the low-voltage power cord 11.

[0045] The above description is merely an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, various modifications and variations of the present application are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

[0046] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

[0047] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

Claims

1. A low voltage wire harness adapter, characterized in that: include: A box body, wherein one side of the box body is provided with a first crimping terminal for connecting a CAN line of a low-voltage wiring harness, and an opposite side is provided with a first connecting terminal, the first crimping terminal and the first connecting terminal are connected via a first CAN extension wiring harness, and the first connecting terminal is used to connect to a test bench via an external wiring harness; One side of the box is also provided with a second crimping terminal for connecting a low-voltage power line to a low-voltage wiring harness, and the opposite side is provided with a power port. The second crimping terminal and the power port are connected through a low-voltage power extension harness, and the power port is used to connect to the test bench through an external cable.

2. The low-voltage wire harness adapter according to claim 1, characterized in that: The first crimping terminal includes a connecting seat, which is fixedly connected to the box body and is provided with a plurality of accommodating grooves. The first crimping terminal also includes a plurality of crimping blocks for crimping the CAN-H line and the CAN-L line of the CAN line. The crimping blocks are arranged at the position of the accommodating groove and can rotate relative to the connecting seat.

3. The low-voltage wire harness adapter according to claim 2, characterized in that: The crimping block is connected to the connecting seat via a rotating shaft, and the distance between the end surface of the crimping block facing the bottom wall of the accommodating groove and the bottom wall of the accommodating groove is smaller than the diameter of the CAN-H line and the CAN-L line.

4. The low-voltage wire harness adapter according to claim 2 or 3, characterized in that: The structure of the second crimping terminal is the same as that of the first crimping terminal.

5. The low-voltage wire harness adapter according to claim 4, characterized in that: The first CAN extension harness is connected to the connecting seat, and the core of the first CAN extension harness is located in the receiving groove; The low-voltage power extension harness is connected to the connection seat of the second crimping terminal.

6. The low-voltage wire harness adapter according to any one of claims 1 to 3, characterized in that: One end of the first connecting terminal facing the first crimping terminal is provided with a plurality of plug holes for connecting with the first CAN extension harness.

7. The low-voltage wire harness adapter according to any one of claims 1 to 3, characterized in that: A magnetic ring is further provided in the box, and the first CAN extension harness and the low-voltage power supply extension harness pass through the magnetic ring.

8. The low-voltage wire harness adapter according to claim 7, characterized in that: The magnetic ring is fixedly connected to the box through a fixing frame.

9. The low-voltage wire harness adapter according to any one of claims 1 to 3, characterized in that: A third crimping terminal is provided beside the first crimping terminal, and a second connecting terminal is provided beside the first connecting terminal. The third crimping terminal is connected to the second connecting terminal through a second CAN extension harness.

10. The low-voltage wire harness adapter according to any one of claims 1 to 3, characterized in that: The top of the box is provided with an opening.

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