An OBD diagnostic harness

Abstract

This application provides an OBD diagnostic wiring harness, comprising: a first connecting part and a second connecting part; the first connecting part and the second connecting part are electrically connected; the first connecting part includes a male connector and a plurality of CAN subnet connection terminals; wherein the plurality of CAN subnet connection terminals are electrically connected to the male connector; correspondingly, the second connecting part includes at least one set of mating terminals and a female connector electrically connected to the at least one set of mating terminals, the female connector being connected in conjunction with a first detection terminal; wherein the set of mating terminals is connected in conjunction with the set of CAN subnet connection terminals. This utility model is easy for workers to operate, can be applied to the rapid switching of multiple different CAN subnets, and is less likely to cause bus device interface loss, with a simple structure and high efficiency.

Description

Technical Field

[0001] The present application relates to the field of vehicle detection technology, and in particular to an OBD diagnostic harness. Background Art

[0002] During the automobile development process, the OBD diagnostic interface needs to be frequently used for the CAN network communication of the whole vehicle to complete software flashing, data calibration and analysis and diagnosis; but with the evolution of the E / E architecture of the whole vehicle, the prototype vehicles in the development stage often have multiple OBD diagnostic interfaces, and the pin definitions of different OBD interfaces are completely different. The original diagnostic adapter harness is difficult to meet the actual needs. Even if a one-to-many adapter harness is selected, the combination of OBD pins and DB9 pins is fixed and cannot be switched; the specially defined interface needs to be customized from the harness manufacturer, which is costly; when switching between different CAN subnets, it is necessary to loosen and disconnect the connection between the DB9 female end and the bus device, and then find the DB9 female end corresponding to another CAN subnet to re-insert and tighten it, which is inconvenient to operate and easily causes loss of the bus device interface. Therefore, there is an urgent need for an automotive OBD diagnostic adapter harness with strong versatility, low cost and convenient operation. Utility Model Content

[0003] The purpose of this application is to provide an OBD diagnostic wiring harness, which overcomes the technical problems existing in the background technology. The specific solution is as follows:

[0004] In the first aspect, the present application provides an OBD diagnostic wiring harness, comprising: a first connecting part and a second connecting part; the first connecting part and the second connecting part are electrically connected; the first connecting part comprises a male end plug connector and several groups of CAN subnet connection terminals; wherein the several groups of CAN subnet connection terminals are electrically connected to the male end plug connector; correspondingly, the second connecting part comprises at least one group of docking terminals and a female end plug connector electrically connected to at least one group of docking terminals, and the female end plug connector is cooperatively connected to a first detection terminal; wherein the group of docking terminals is cooperatively connected to a group of CAN subnet connection terminals.

[0005] Further, a group of the CAN subnet connection terminals includes two first connection sockets, and correspondingly, a group of the docking terminals includes the same number of first connection pins as the first connection sockets.

[0006] Furthermore, the first connecting seat and the first connecting pin are fixed by plugging.

[0007] Furthermore, each of the first connecting pins is provided with a second connecting seat; the second connecting seat is connected and fixed by matching with the second connecting pin electrically connected to the second detection terminal.

[0008] Furthermore, the first connecting pin and the second connecting pin are both lantern plugs, and correspondingly, the first connecting seat and the second connecting seat are both lantern sockets.

[0009] Furthermore, the outer diameter of the lantern plug is 4 mm, and correspondingly, the inner diameter of the lantern socket is 4 mm.

[0010] Further, a group of the CAN subnet connection ends includes two first connection pins, and correspondingly, a group of the docking ends includes the same number of first connection sockets as the first connection pins.

[0011] Furthermore, each of the first connection sockets is provided with a second connection pin; the second connection pin is connected and fixed by cooperating with the second connection socket electrically connected to the second detection terminal.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model provides an OBD diagnostic wiring harness, which adopts a pair-wise plug-in mode between a first connecting part and a second connecting part, can be applied to all vehicles using an OBD diagnostic interface, adapts to any defined OBD diagnostic interface, can realize fast switching of CAN subnets, eliminates operational difficulties, and improves the diagnostic and debugging efficiency of the entire vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the first connecting part;

[0015] Figure 2 is a schematic diagram of the overall structure of the second connecting part;

[0016] Figure 3 It is a structural schematic diagram of the male end plug connector;

[0017] Figure 4 This is a schematic diagram of the structure of the female end plug connector.

[0018] In the figure:

[0019] 1. A first connecting portion;

[0020] 11. Male plug connector;

[0021] 12. CAN subnet connection terminal;

[0022] 120, first connecting seat;

[0023] 13. CAN subnet pin;

[0024] 2. A second connecting portion;

[0025] 21. Docking terminal;

[0026] 210, first connection pin;

[0027] 22. Female end plug connector;

[0028] 220, docking terminal pin;

[0029] 3. The second connecting socket. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of this application clearer, the following will be combined with the attached Figure 1-4 The present application is further described in detail. Obviously, the described embodiments are only a part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0031] It should be understood that although the terms first, second, third, etc. may be used to describe in the embodiments of the present application, these descriptions should not be limited to these terms. These terms are only used to distinguish the descriptions. For example, without departing from the scope of the embodiments of the present application, the first may also be referred to as the second, and similarly, the second may also be referred to as the first.

[0032] First, in order to facilitate the understanding of the embodiments provided in the present application, the following explanations are made: the detection terminal in the present application can be a host computer, a notebook or a computer, which is connected to the whole vehicle through an OBD diagnostic harness, so as to complete the tasks of software flashing, data calibration and analysis and diagnosis; the CAN subnet pins 13 on the existing OBD diagnostic interface are all pre-defined and adapted to different CAN subnets. Therefore, how to use a universal OBD diagnostic harness to adapt to an OBD diagnostic interface with any pin definition, so as to achieve rapid switching between CAN subnets, eliminate operational difficulties, and improve the efficiency of vehicle diagnosis and debugging, is a technical problem that needs to be solved urgently.

[0033] Example 1

[0034] This application provides an OBD diagnostic wiring harness, such as Figure 1 and Figure 2 As shown, it includes: a first connecting part 1 and a second connecting part 2; the first connecting part 1 and the second connecting part 2 are electrically connected; the first connecting part 1 includes a male end plug connector 11 and eight groups of CAN subnet connection terminals 12 and CAN subnet pins 13; wherein each group of CAN subnet pins 13 is fixed on the male end plug connector 11, and is electrically connected to the corresponding CAN subnet connection terminal 12; correspondingly, the second connecting part 2 includes at least one group of docking terminals 21 and a female end plug connector 22 electrically connected to at least one group of docking terminals 21, and the female end plug connector 22 is connected to the first detection terminal in a cooperative manner; wherein the group of docking terminals 21 is connected to a group of CAN subnet connection terminals 12 in a cooperative manner.

[0035] It can be understood that the male end connector 11 is an OBD male end connector, and the female end connector 22 is a DB9 female end; the group of CAN subnet connection terminals 12 represents a physical interface of a CAN subnet. In this embodiment, eight groups of CAN subnet connection terminals 12 are used as an example. Of course, in actual applications, they can be matched according to the number of CAN subnets in combination with actual needs; the present application connects a group of docking terminals 21 with a group of CAN subnet connection terminals 12, without repeatedly disconnecting the connection between the DB9 female end and the bus device and the DB9 female end and the CAN subnet, thereby realizing the switching of the bus device (detection terminal) with different CAN subnet connections, avoiding the loss of the bus device interface, and having the advantages of low cost, etc.

[0036] Furthermore, a docking end pin 220 is fixedly provided on the female end plug connector 22, wherein the docking end pin 220 is electrically connected to the docking end 21; and a connecting wire harness is provided between the docking end pin 220 and the docking end 21.

[0037] Optionally, a group of the CAN subnet connection terminals 12 includes two first connection sockets 120, and correspondingly, a group of the docking terminals 21 includes the same number of first connection pins 210 as the first connection sockets 120; and the first connection sockets 120 and the first connection pins 210 are plug-fixed.

[0038] It can be understood that the utility model completes the rapid docking of the CAN subnet connection terminal 12 and the docking terminal 21 through the plug-in setting between the connection socket and the connection pin, which has the advantage of convenient operation.

[0039] Optionally, a second connecting socket 3 is provided on each of the first connecting pins 210; the second connecting socket 3 is connected and fixed by cooperating with the second connecting pin electrically connected to the second detection terminal; it can be understood that in this embodiment, a second connecting socket 3 is provided on the first connecting pin 210, and an electrical connection is made with the second detection terminal through the second connecting socket 3, so that multiple detection terminals can complete the tasks of software flashing, data calibration and analysis and diagnosis, which has strong applicability and convenient operation.

[0040] Furthermore, a connection wire seat is provided on the second connection seat 3, wherein the connection wire seat is fixed on the second connection seat 3 and is used to fix the wiring harness.

[0041] Optionally, the first connecting pin 210 and the second connecting pin are both lantern plugs, and correspondingly, the first connecting seat 120 and the second connecting seat are both lantern sockets; the outer diameter of the lantern plug is 4 mm, and correspondingly, the inner hole diameter of the lantern socket is 4 mm.

[0042] It can be understood that, considering the actual application frequency, by selecting the lantern socket and lantern plug, cost reduction can be achieved while ensuring that the number of times the OBD diagnostic harness is used can meet basic needs.

[0043] Indicative:

[0044] like Figure 3 and Figure 4 As shown in the figure, the vehicle model has one OBD diagnostic interface and defines two CAN subnets, namely: CAN subnet 1, corresponding to CAN_H pin A and CAN_L pin D; CAN subnet 2, corresponding to CAN_H pin B and CAN_L pin C, see Figure 3 The DB9 interface of the diagnostic equipment used is defined as follows: CAN_H pin is F, CAN_L pin is E, as shown in Figure 4 shown.

[0045] First, based on the OBD pin definition of the vehicle model, connect the OBD male connector to the OBD interface of the car, and connect the lantern socket corresponding to the CAN_H and CAN_L pins of CAN subnet 1 (pins A and D in this example) to the lantern plug corresponding to the CAN_H and CAN_L pins of DB9 (pins F and E in this example), ensuring that the CAN_H and CAN_H of the two parts of the wiring harness are connected, and the CAN_L and CAN_L are connected, and then connect the DB9 female connector to the detection terminal (such as the host computer). At this time, the host computer can communicate with the CAN subnet 1 of this vehicle.

[0046] When you need to switch to CAN subnet 2, just disconnect the lantern plug and plug it into the lantern socket corresponding to the CAN_H and CAN_L pins of CAN subnet 2 (pins B and C in this example). At this time, the host computer can communicate with the CAN subnet 2 of this vehicle.

[0047] When CAN subnet multiplexing is required, it is necessary to add a DB9 connection harness and plug its lantern plug into the second connector of the original harness. At this time, two host computers can communicate with the CAN subnet of this vehicle at the same time.

[0048] Example 2

[0049] Optionally, a group of the CAN subnet connection terminals 12 include two first connection pins 210, and correspondingly, a group of the docking terminals 21 include the same number of first connection sockets 120 as the first connection pins 210; each of the first connection sockets 120 is provided with a second connection pin; the second connection pin is connected and fixed by matching with the second connection socket electrically connected to the second detection terminal.

[0050] The difference compared to the embodiment is that, in this embodiment, the connecting pin of the CAN subnet connection terminal 12 and the connecting socket of the docking terminal 21 are interchanged with those in Embodiment 1; the advantage of this design is that different types of OBD diagnostic harnesses can be selected according to the needs of the user, and are not limited to one product, so it has more selectivity.

[0051] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in a variety of different forms and should not be construed as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. In the accompanying drawings, for the sake of clarity, the thickness of the layers and regions may be enlarged, and the same reference numerals are used to represent the same devices, and thus their descriptions will be omitted.

Claims

1. An OBD diagnostic harness, characterized in that: include: A first connection part (1) and a second connection part (2); the first connection part (1) and the second connection part (2) are electrically connected; the first connection part (1) comprises a male end plug connector (11) and a plurality of groups of CAN subnet connection terminals (12); wherein the plurality of groups of CAN subnet connection terminals (12) are electrically connected to the male end plug connector (11); correspondingly, the second connection part (2) comprises at least one group of docking terminals (21) and a female end plug connector (22) electrically connected to the at least one group of docking terminals (21), wherein the female end plug connector (22) is connected in cooperation with a first detection terminal; wherein the group of docking terminals (21) is connected in cooperation with a group of CAN subnet connection terminals (12).

2. The OBD diagnostic harness according to claim 1, characterized in that: A group of the CAN subnet connection terminals (12) includes two first connection sockets (120), and correspondingly, a group of the docking terminals (21) includes the same number of first connection pins (210) as the first connection sockets (120).

3. The OBD diagnostic harness according to claim 2, characterized in that: The first connection seat (120) and the first connection pin (210) are plug-connected and fixed.

4. The OBD diagnostic harness according to claim 3, characterized in that: A second connection seat (3) is provided on each of the first connection pins (210); the second connection seat (3) is connected and fixed by matching with the second connection pin electrically connected to the second detection terminal.

5. The OBD diagnostic harness according to claim 4, characterized in that: The first connecting pin (210) and the second connecting pin are both lantern plugs, and correspondingly, the first connecting seat (120) and the second connecting seat (3) are both lantern sockets.

6. The OBD diagnostic harness according to claim 5, characterized in that: The outer diameter of the lantern plug is 4 mm, and correspondingly, the inner diameter of the lantern socket is 4 mm.

7. The OBD diagnostic harness according to claim 1, characterized in that: A group of the CAN subnet connection terminals (12) includes two first connection pins (210), and correspondingly, a group of the docking terminals (21) includes the same number of first connection sockets (120) as the first connection pins (210).

8. The OBD diagnostic harness according to claim 7, characterized in that: Each of the first connection bases (120) is provided with a second connection pin; the second connection pin is connected and fixed by matching with a second connection base (3) electrically connected to a second detection terminal.

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