CAN wire connector, dump truck chassis wire harness structure and dump truck

Abstract

The utility model discloses a controller area network (CAN) wire connector, a dumper chassis wire harness structure and a dumper, a first connector is provided with jacks which are respectively used for connecting a CANH of a first CAN wire, a CANL of a second CAN wire and a shielding wire; the second connector is in plug-in connection with the first connector, and a jack is formed in the second connector and used for connecting the CANH, the CANL and the shielding line of the third CAN line; the first connector is internally provided with copper sheets which are used for correspondingly connecting the CANH, the CANL and the shielding wire, the wire cores of the first CAN wire, the second CAN wire and the third CAN wire are respectively provided with a waterproof plug, the end parts of the wire cores are crimped with terminals, and the terminals are correspondingly inserted into the jacks of the first connector and the second connector. According to the utility model, the problem that the dumper needs to be soaked in water for a short time is solved, the waterproof performance at a doubling point is improved, a series of electrical faults caused by water entering the wiring harness are avoided, and the normal operation of the dumper in a specific use environment is ensured.

Description

Technical Field

[0001] The utility model relates to a CAN wire connector, a chassis wiring harness structure of a dump truck and a dump truck, belonging to the field of automotive wiring harnesses. Background Art

[0002] As a production tool, a dump truck not only participates in urban construction, but also participates in the construction of projects such as highways, railways, airports, and docks. The operating conditions of dump trucks are generally poor. In special use environments, some drivers will drive the vehicle into a water area with a water depth of about 1 meter. After loading the muck, the vehicle is driven out. The vehicle stays in the water for about 15 minutes. This poses a great test to the waterproof performance of the chassis wiring harness. Although the waterproof grade of the connectors of the chassis wiring harness is IPX7, it can ensure that there is no risk of water ingress at the connectors. However, after the wire splicing points (the wire splicing points refer to the connection points where two or more wires in the wiring harness are articulated) of the wiring harness are immersed in deep water, there is a certain risk of water ingress.

[0003] At present, in the field of automotive wiring harnesses, basically the ultrasonic welding process is adopted to process the wire splicing points. This process cannot ensure that the wire splicing points do not get water ingress after being immersed in 1-meter-deep water. After the wire splicing points of the wiring harness get water ingress, there are risks of oxidation and corrosion, which will bring a series of electrical faults and even threaten the driving safety of the driver. Summary of the Invention

[0004] In view of the problems existing in the above-mentioned prior art, the utility model provides a CAN wire connector, a chassis wiring harness structure of a dump truck and a dump truck.

[0005] In order to achieve the above object, a CAN wire connector adopted by the utility model includes:

[0006] A first connector, on which there are jacks for connecting the CANH, CANL and shield wires of the first CAN wire and the second CAN wire respectively;

[0007] A second connector, which is inserted into the first connector, and on which there are jacks for connecting the CANH, CANL and shield wires of the third CAN wire;

[0008] Copper sheets for correspondingly connecting each CANH, CANL and shield wire are arranged in the first connector. Waterproof plugs are installed on the cores of the first CAN wire, the second CAN wire and the third CAN wire, and terminals are crimped at the ends of the cores. The terminals are correspondingly inserted into the jacks of the first and second connectors.

[0009] In some embodiments, the copper sheets are injection molded onto the body of the first connector through encapsulation.

[0010] In some embodiments, the CANH of the first CAN line and the second CAN line are shorted through the copper sheet and then connected to the CANH of the third CAN line.

[0011] In a second aspect of the present invention, there is provided a wiring harness structure for a dump truck chassis, including a wiring harness body, a grounding connector, an electrical connector, and the CAN line connector as described above.

[0012] The wiring harness body includes a main wiring harness, a first branch wiring harness, a second branch wiring harness, and a third branch wiring harness. The main wiring harness is connected to the electrical connector through the first branch wiring harness, and a CAN line connector is connected to the first branch wiring harness. The main wiring harness is connected to the grounding connector through the second branch wiring harness, and the main wiring harness is connected to a first controller arranged above the upper wing surface of the vehicle frame through the third branch wiring harness.

[0013] In some embodiments, a protective sleeve is provided outside the wiring harness body. The inner layer of the protective sleeve uses a PVC sleeve, and the outer layer uses a self - rolling textile sleeve.

[0014] In some embodiments, the electrical connector is connected to a second controller, and the second controller is arranged below the upper wing surface of the vehicle frame. The CAN line connector is connected within a range of 50 mm to 100 mm close to the second controller.

[0015] In some embodiments, the first branch wiring harness uses a tie - down strap or a bracket to restrict the wiring harness route, and the end of the first branch wiring harness is not higher than the top height of the electrical connector.

[0016] In some embodiments, the ground wires of each electrical component are gathered into the second branch wiring harness and grounded through the grounding connector and the vehicle frame.

[0017] In some embodiments, the grounding connector includes a male terminal sheath and a female terminal sheath.

[0018] In a third aspect of the present invention, there is provided a dump truck, on which the above - mentioned wiring harness structure for a dump truck chassis is installed.

[0019] Considering the risk of water ingress at the wiring harness parallel connection points in the specific use environment of the dump truck, the present invention designs the parallel connection points on the wiring harness branches above the upper wing surface of the vehicle frame. Aiming at the difficulty of having more parallel connection points for CAN lines and ground wires in the wiring harness, a CAN line connector is designed to solve the parallel connection problem of CAN lines, and a grounding connector is used to solve the parallel connection problem of ground wires. The present invention solves the problem that the dump truck needs to be submerged in water for a short time, improves the waterproof performance at the parallel connection points, avoids a series of electrical faults caused by water ingress into the wiring harness, and ensures that the dump truck can work normally in the specific use environment. Description of the Drawings

[0020] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 is a structural schematic diagram of the present utility model;

[0022] Figure 2 is a structural schematic diagram of the CAN line connector of the present utility model;

[0023] In the figure: 1, main wire harness; 2, CAN line connector; 3, third branch wire harness; 4, first controller; 5, ground connector; 6, second branch wire harness; 7, second controller; 8, electrical connector; 9, first branch wire harness; 10, first CAN line; 11, waterproof plug; 12, terminal; 13, copper sheet; 14, third CAN line; 15, second connector; 16, first connector; 17, second CAN line. Detailed implementation manners

[0024] To make the objectives, technical solutions and advantages of the present utility model clearer, the following will detail the technical solutions of the present application through the drawings and specific embodiments. It should be understood that the specific features in the embodiments of the present application and the embodiments are detailed descriptions of the technical solutions of the present application, rather than limitations on the technical solutions of the present application. Without conflict, the technical features in the embodiments of the present application and the embodiments can be combined with each other.

[0025] Embodiment 1

[0026] As Figure 2 shown, a CAN line connector includes a first connector 16, a second connector 15, a waterproof plug 11, a terminal 12 and a copper sheet 13;

[0027] Six jacks are provided on the first connector 16. The three upper jacks are used to connect the CANH, CANL and shield wire of the first CAN line 10, and the three lower jacks are used to connect the CANH, CANL and shield wire of the second CAN line 17. Three jacks are provided on the second connector 15, which are used to connect the CANH, CANL and shield wire of the third CAN line 14;

[0028] The copper sheet 13 is injection molded onto the body of the first connector 16 with encapsulation. One end of the copper sheet 13 is provided with two interfaces, and the other end is provided with one interface. The CANH line of the first CAN line 10 and the CANH line of the second CAN line 17 are short-circuited through the two interface ends of the copper sheet 13, and then connected to the CANH of the third CAN line 14 through one interface end of the copper sheet 13; similarly, the CANL and shield wires are connected in this way.

[0029] During assembly, first strip the outer skin of the CAN line, seal it with a heat shrink tube, then put the waterproof plugs 11 on each wire core respectively, strip the wire core with a length of 40 mm, then crimp the terminals 12, then insert the terminals into the CAN line connector 2, and finally insert the first connector 16 and the second connector 15 into each other.

[0030] Embodiment 2

[0031] The main harness of the chassis harness is generally fixed in the longitudinal beam of the vehicle frame using rivet straps or brackets. To solve the problem of water ingress at the wire splicing point, the present utility model adopts the method of raising the wire splicing point of the chassis harness, raising the wire splicing point of the chassis harness above the upper wing surface of the vehicle frame to improve the waterproof performance at the wire splicing point of the chassis harness;

[0032] After sorting, it is found that there are many wire splicing points required for the CAN line and ground wire of the chassis harness. According to the requirement that the distance between wire splicing points is greater than 50 mm, it is impossible to ensure that all wire splicing points are above the upper wing surface of the vehicle frame. Therefore, the present utility model also provides a dump truck chassis harness structure, as Figure 1 、 Figure 2 shown, including a harness body, a CAN line connector 2, a ground connector 5, and an electrical connector 8 (the waterproof grade requirement of the electrical connector 8 reaches IPX7);

[0033] The harness body includes a main harness 1, a first branch harness 9, a second branch harness 6, and a third branch harness 3. The outside of the harness body is provided with a protective sleeve. The inner layer of the protective sleeve is a PVC sleeve, which mainly functions to prevent water ingress. The outer layer of the protective sleeve is a self-rolling textile sleeve, which mainly functions to resist abrasion;

[0034] The wire splicing points of the harness body are divided into three categories, namely CAN line, ground wire, and signal or power line. Among them, the CAN line and ground wire require more wire splicing points. The signal or power line is mostly a single wire and mostly does not require wire splicing. The wire splicing points of the harness body are designed on the third branch harness 3, and the height of the third branch harness 3 from the ground is greater than 1.2 meters;

[0035] The CAN line needs to design a parallel connection point at the controller to meet the design specifications of the "daisy chain" wiring form. For the first controller 4 arranged above the upper wing surface of the vehicle frame, the parallel connection point of the CAN line is designed within 50 mm close to the controller, which not only meets the length requirement of the CAN line for node branching but also meets the requirement that the parallel connection point is above the upper wing surface of the vehicle frame; for the second controller 7 arranged below the upper wing surface of the vehicle frame, the scheme of using the CAN line connector 2 on the first branch wire harness 9 replaces the parallel connection point scheme. The CAN line connector 2 is a connector specially designed for this scheme, and the CAN line connector 2 is designed within the range of 50 mm to 100 mm close to the second controller 7;

[0036] The first branch wire harness 9 uses rivet straps or other straps to restrict the wire harness routing. The end of the first branch wire harness 9 is not higher than the height of the electrical connector 8 to prevent water from entering the connector along the wire harness; the electrical connector 8 is connected to the second controller 7.

[0037] The ground wire uses the grounding connector 5 and the vehicle frame for grounding. The grounding connector 5 includes a male terminal sheath and a female terminal sheath. The model of the male terminal sheath is 1534188-1 (TE), and the model of the female terminal sheath is 8-968975-1 (TE). The ground wires of each electrical component converge to the second branch wire harness 6 and finally complete grounding with the vehicle frame through the grounding connector 5.

[0038] Most of the signal or power lines do not require parallel connection points. For the parallel connection points of individual wire harnesses, they are designed on the third branch wire harness 3. It should be noted that the third branch wire harness 3 includes any wire harness branches arranged above the upper wing surface of the vehicle frame, and it is required that the distance between each parallel connection point is at least greater than 50 mm.

[0039] Embodiment 3

[0040] The present utility model also provides a dump truck, on which the dump truck chassis wire harness structure described above is installed.

[0041] The present utility model adopts the design of parallel connection points on the wire harness branches above the upper wing surface of the vehicle frame. Aiming at the difficulty that there are many parallel connection points required for the CAN line and the ground wire in the wire harness, a CAN line connector is designed to solve the parallel connection problem of the CAN line, and a grounding connector is used to solve the parallel connection problem of the ground wire. The present utility model solves the problem that the dump truck needs to be soaked in water for a short time, improves the waterproof performance at the parallel connection points, avoids a series of electrical faults caused by water entering the wire harness, and ensures that the dump truck can work normally in a specific use environment.

[0042] In addition, those skilled in the art can understand that although some of the embodiments described herein include certain features contained in other embodiments rather than other features, the combination of features of different embodiments also means that it is within the protection scope of the present utility model and forms different embodiments. For example, in the above embodiments, those skilled in the art can use them in a combined manner according to the known technical solutions and the technical problems to be solved by this application.

Claims

1. A CAN line connector, characterized in that: include: A first connector (16) is provided with a jack for connecting CANH, CANL and a shielding line of the first CAN line (10) and the second CAN line (17) respectively; A second connector (15) is plugged into the first connector (16) and is provided with a jack for connecting CANH, CANL and a shielding line of a third CAN line (14); The first connector (16) is provided with a copper sheet (13) for correspondingly connecting each CANH, CANL and shielding wire, and each wire core of the first CAN wire (10), the second CAN wire (17) and the third CAN wire (14) is installed with a waterproof plug (11), and the end of the wire core is crimped with a terminal (12), and the terminal (12) is correspondingly inserted into the jack of the first and second connectors.

2. A CAN line connector according to claim 1, characterized in that: The copper sheet (13) is overmolded onto the body of the first connector (16).

3. A CAN line connector according to claim 1 or 2, characterized in that: The CANHs of the first CAN line (10) and the second CAN line (17) are short-circuited through the copper sheet (13) and then connected to the CANH of the third CAN line (14).

4. A dump truck chassis wiring harness structure, characterized in that: It comprises a wiring harness body, a grounding connector (5), an electrical connector (8) and a CAN line connector (2) as claimed in any one of claims 1 to 3; The wiring harness body comprises a main wiring harness (1), a first branch wiring harness (9), a second branch wiring harness (6) and a third branch wiring harness (3); the main wiring harness (1) is connected to an electrical connector (8) via the first branch wiring harness (9); a CAN line connector (2) is connected to the first branch wiring harness (9); the main wiring harness (1) is connected to a ground connector (5) via the second branch wiring harness (6); and the main wiring harness (1) is connected to a first controller (4) arranged above the upper wing surface of the vehicle frame via the third branch wiring harness (3).

5. A dump truck chassis wiring harness structure according to claim 4, characterized in that: A protective cover is arranged outside the wiring harness body, wherein the inner layer of the protective cover adopts a PVC sleeve and the outer layer adopts a self-rolling textile sleeve.

6. A dump truck chassis wiring harness structure according to claim 4, characterized in that: The electrical connector (8) is connected to a second controller (7), the second controller (7) is arranged below the upper wing surface of the vehicle frame, and the CAN line connector (2) is connected within a range of 50 mm to 100 mm close to the second controller (7).

7. A dump truck chassis wiring harness structure according to claim 4, characterized in that: The first branch wiring harness (9) uses a rolling belt or a bracket to constrain the wiring harness direction, and the tail end of the first branch wiring harness (9) is not higher than the top height of the electrical connector (8).

8. The wiring harness structure of a dump truck chassis according to claim 4, characterized in that: The ground wires of the various electrical components are gathered into a second branch wire harness (6), and grounding is completed through a grounding connector (5) and a vehicle frame.

9. A dump truck chassis wiring harness structure according to claim 4 or 8, characterized in that: The grounding connector (5) comprises a grounding male terminal sheath and a female terminal sheath.

10. A dump truck, characterized in that: The dump truck is installed with the dump truck chassis wiring harness structure described in any one of claims 4 to 9.

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