Semi-trailer and its wiring harness

Abstract

The present invention provides a semi-trailer wiring harness, including a main wiring harness and a branch wiring harness. The main wiring harness includes a grounding wire, a plurality of first wires, a plurality of second wires, and a shell that wraps the wires together; one terminal of the grounding wire is divided into two strands, namely a first strand grounding wire terminal and a second strand grounding wire terminal; the first strand grounding wire terminal and the terminals of the plurality of first wires are used together to connect a seven-core socket for connecting different lamps of a light assembly of a semi-trailer; the branch wiring harness includes a plurality of third wires wrapped together; one end of the plurality of third wires is respectively connected to the second strand grounding wire terminal and the terminals of the plurality of second wires; the other ends of the plurality of third wires are used together to connect a five-core socket for connecting a brake system of a semi-trailer; in this way, the semi-trailer wiring harness bundles the wires used to supply power to the light assembly and brake system of the semi-trailer, thereby achieving high concentration of the wiring harness.

Description

Technical Field

[0001] The invention relates to the technical field of transport vehicles, in particular to a semitrailer and a semitrailer wiring harness. Background Art

[0002] Semi-trailer electrical systems are divided into two categories, lighting and antilock brake system (ABS). The lighting interface is based on ISO 1185, while the braking interface is based on ISO 7638. Existing semi-trailer electrical systems are artificially divided into two lines, with seven-core wiring harnesses for lighting and five-core wiring harnesses for the ABS.

[0003] The above-mentioned seven-core and five-core wire harnesses are fixed separately and distributedly wired. There are many wire harnesses in total, and the corresponding wire harness fixing brackets are also many, resulting in excessively high wire harness costs. In addition, there are multiple grounding lines, unreasonable wire harness redundancy, messy wire harness layout, and inconvenient installation and maintenance. At the same time, under the general trend of popularization of intelligent equipment, the original wire harness design did not take into account the power supply and power consumption requirements of the intelligent module as a whole, and the current wire harness layout can no longer meet the trend of upgrading and development of semi-trailers. Summary of the invention

[0004] The object of the present invention is to provide a semi-trailer wiring harness to solve the problems of large number of wiring harnesses, difficult layout and high cost of distributed wiring harnesses in the prior art.

[0005] The present invention also aims to provide a semitrailer having the above-mentioned semitrailer wiring harness.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A semi-trailer wiring harness comprises: a main wiring harness, which comprises a grounding wire, a plurality of first wires, a plurality of second wires and a shell that wraps the wires together; the wiring ends of the wires extend out of the shell; one wiring end of the grounding wire is divided into two strands, namely a first ground wire wiring end and a second ground wire wiring end; the first ground wire wiring end and the wiring ends of the plurality of first wires are used together to connect a seven-core socket for connecting different lamps of a lighting assembly of the semi-trailer; a branch wiring harness comprises a plurality of third wires wrapped together; one end of the plurality of third wires is respectively connected to the second ground wire wiring end and the wiring ends of the plurality of second wires; the other ends of the plurality of third wires are used together to connect a five-core socket for connecting to a braking system of the semi-trailer.

[0008] According to one embodiment of the present invention, the main wiring harness also includes a first socket, which is respectively connected to the second ground wire terminal and the terminal of the plurality of second wires; the branch wiring harness also includes a first connector, which is respectively connected to one end of the plurality of third wires; the first socket is plugged into and matched with the first connector so that the corresponding wires are electrically connected to each other.

[0009] According to one embodiment of the present invention, the first connector includes a socket and a plurality of plug-in terminals; the socket has a plurality of through holes, each of the plug-in terminals is correspondingly inserted into each of the through holes, one end of each of the plug-in terminals is respectively crimped with the end of each of the third wires, and the other end is used to be respectively connected with the second ground wire terminal and the terminal of the plurality of second wires.

[0010] According to an embodiment of the present invention, the first connector is a five-core plug; the second wires correspondingly connected to the respective plug terminals include a normal power supply line, an ignition switch line and an alarm light line.

[0011] According to one embodiment of the present invention, the other terminal of the grounding wire and the other terminal of each of the second wires extend out of the housing together for connection to an on-board computer of the semitrailer.

[0012] According to one embodiment of the present invention, the main wiring harness is provided with reserved interfaces for positioning lights at the front and rear ends in the extension direction, respectively. The reserved interfaces for positioning lights are exposed from the housing and are connected to the first wire corresponding to the positioning lights.

[0013] According to one embodiment of the present invention, a power supply interface is provided on the main wiring harness, the power supply interface is exposed outside the housing, and the power supply interface is connected to a second wire corresponding to a power supply.

[0014] According to an embodiment of the present invention, a CAN bus interface is provided on the main wiring harness, the CAN bus interface is exposed outside the housing, and the CAN bus interface is connected to a second wire corresponding to a power supply.

[0015] According to an embodiment of the present invention, it further comprises a plurality of wire harness components; the plurality of wire harness components are all sleeved on the outer circumference of the housing and are spaced apart and distributed along the extension direction of the main wire harness.

[0016] The present embodiment also provides a semi-trailer, comprising a frame, a seven-core socket, a five-core socket, two spiral connecting wires for connecting to a tractor power supply, and the above-mentioned semi-trailer wiring harness; the seven-core socket and the five-core socket are arranged at intervals on the front end beam of the frame, one end of the seven-core socket and one end of the five-core socket are respectively connected to the two spiral connecting wires, the other end of the seven-core socket is connected to the second ground wire terminal of the main wiring harness and the terminal of multiple second wires, and the other end of the five-core socket is connected to the terminal of each third wire of the branch wiring harness.

[0017] It can be seen from the above technical solution that the semi-trailer wiring harness provided by the present invention has at least the following advantages and positive effects:

[0018] Compared with the traditional distributed wiring harness, the main wiring harness of the semi-trailer adopts a common grounding wire without affecting the normal use of the wiring harness interface. The wires used to supply power to the lighting assembly and braking system of the semi-trailer are bundled together, achieving a high degree of centralization of the wiring harness, reducing the number of wires and connectors, and reducing the cost of the vehicle wiring harness. At the same time, the wiring harness layout is simpler, which improves the assembly efficiency of the semi-trailer vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The figure is a schematic diagram of the overall structure of the semi-trailer wiring harness in an embodiment of the present invention.

[0020] Figure 2 for Figure 1 Enlarged view of point A.

[0021] Figure 3 FIG. 4 is a schematic diagram of the structure of the first connector in an embodiment of the present invention.

[0022] Figure 4 It is a schematic diagram of the structure of the power supply interface and the CAN bus interface in an embodiment of the present invention.

[0023] The reference numerals are as follows: 100, semi-trailer wiring harness; 1, main wiring harness; 10, housing; 11, grounding wire; 111, first grounding wire terminal; 112, second grounding wire terminal; 12, first wire; 13, second wire; 14, first socket; 15, wiring harness; 16, second socket; 3, branch wiring harness; 31, third wire; 32, first connector; 321, socket; 322, plug-in terminal; 411, front position lamp wire; 412, rear position lamp wire; 421, left turn signal lamp; 422, right turn signal lamp; 431, left brake light; 432, right brake light 1. Turn signal light; 441. Left side reverse light; 442. Right side reverse light line; 451. Left side marker light branch line; 452. Right side marker light branch line; 46. Clearance light line; 47. License plate light line; 48. Fog light line; 51. Normal power supply line; 52. Ignition switch line; 53. Warning light line; 6. ABS connecting line; 61. Second connector; 7. Clearance light reserved interface; 8. Power supply interface; 81. Power supply branch line; 9. CAN bus interface; 200. Seven-core socket; 300. Five-core socket; 410. First spiral connecting line; 420. Second spiral connecting line; 500. Front end beam. DETAILED DESCRIPTION

[0024] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially used for illustration purposes rather than for limiting the present invention.

[0025] Please refer to Figure 1 , this embodiment provides a semi-trailer and its semi-trailer wiring harness 100. The semi-trailer mainly includes a frame, a seven-core socket 200, a five-core socket 300 and two spiral connecting wires for connecting the tractor power supply. The seven-core socket 200 and the five-core socket 300 are fixedly arranged on the front end beam 500 of the frame at intervals. Among them, the seven-core socket 200 and the five-core socket 300 have a unified wiring standard, which is universal for the electrical line connection of the tractor and the semi-trailer. The seven-core socket 200 is used for the circuit connection between the power supply of the tractor and the lighting assembly of the semi-trailer; specifically: one end of the seven-core socket 200 facing the front side of the front end beam 500 is correspondingly connected to a spiral connecting wire, and the other end of the seven-core socket 200 is electrically connected to one end of the main wiring harness 1 in the semi-trailer wiring harness 100. The five-core socket 300 is used for the circuit connection between the tractor power supply and the braking system of the semi-trailer. One end of the five-core socket 300 facing the front side of the front beam 500 is correspondingly connected to another spiral connecting wire, and the other end of the five-core socket 300 is electrically connected to one end of the branch harness 3 in the semi-trailer wiring harness 100 .

[0026] In this embodiment, the two spiral connecting wires are respectively a first spiral connecting wire 410 and a second spiral connecting wire 420. The first spiral connecting wire 410 is a seven-core wire harness (international standard is ISO 1185), which is composed of a spiral seven-core cable and seven-core aviation plugs at both ends, and its seven-core aviation plugs are connected to the seven-core socket 200 on the semi-trailer. The second spiral connecting wire 420 is a five-core wire harness (international standard is ISO 7638), which has five-core aviation plugs at both ends, and is connected to the five-core socket 300 on the semi-trailer.

[0027] The semi-trailer wiring harness 100 includes a main wiring harness 1 and a branch wiring harness 3. The main wiring harness 1 includes a grounding wire 11, a plurality of first wires 12, a plurality of second wires 13, and a shell 10 that wraps the wires together; the terminals of the wires extend out of the shell 10; one terminal of the grounding wire 11 is divided into two strands, namely a first strand grounding wire terminal 111 and a second strand grounding wire terminal 112; the first strand grounding wire terminal 111 and the terminals of the plurality of first wires 12 are used together to connect a seven-core socket 200 for connecting different lamps of the lighting assembly of the semi-trailer. The branch wiring harness 3 includes a plurality of third wires 31 wrapped together; one end of the plurality of third wires 31 is respectively connected to the second strand grounding wire terminal 112 and the terminals of the plurality of second wires 13; the other ends of the plurality of third wires 31 are used together to connect a five-core socket 300 for connecting the braking system (ABS) of the semi-trailer. The above-mentioned semi-trailer wiring harness 100 is different from the traditional distributed wiring harness. Instead, the two wiring harnesses currently used to supply power to the lighting assembly and braking system of the semi-trailer are integrated into one main wiring harness 1. The wiring harness has a high degree of integration, which reduces the number of wires and connectors, and reduces the cost of the vehicle wiring harness. At the same time, the wiring harness layout is simpler, which improves the assembly efficiency of the semi-trailer vehicle.

[0028] Specifically, the main wiring harness 1 includes a housing 10, a grounding wire 11, a plurality of first wires 12, a plurality of second wires 13, a first socket 14, and a plurality of wiring harnesses 15. The housing 10 is a hollow cylindrical structure made of insulating material, which is used to wrap the wires together. The wiring terminals at both ends of the above-mentioned wires extend out of the openings at both ends of the housing 10 along the extension direction. For the convenience of description, please use Figure 1 With reference to the viewing direction, a terminal of the grounding wire 11 located at the front end of the semi-trailer is divided into two strands, namely a first grounding wire terminal 111 and a second grounding wire terminal 112, so as to realize the common grounding wire in the electrical circuit of the lighting assembly and the braking system, thereby reducing the number of wires.

[0029] The first ground wire terminal 111 and the terminals of the plurality of first wires 12 are used together to connect the seven-core socket 200 to transmit the light signal of the tractor to the semi-trailer. The wiring of the seven-core socket 200 has a unified international standard, and it has seven holes, and the corresponding seven-core lamp wires (including the ground wire 11 and the first wires 12) are: ground wire, rear position lamp wire 412, front position lamp wire 411, left turn signal lamp 421 / brake lamp 431 / reverse lamp 441 / marker lamp wire, right turn signal lamp 422 / brake lamp 432 / reverse lamp 442 / marker lamp wire, clearance lamp wire 46, license plate lamp wire 47 and fog lamp wire 48, and the color definition of each of the above wires remains unchanged according to the standard requirements.

[0030] The second ground wire terminal 112 and the terminals of the plurality of second conductors 13 are connected to the branch harness 3 through the first socket 14, and then transferred to the five-core socket 300 to supply power to the brake system of the semi-trailer. Except for the ground wire 11, the other second conductors 13 connected to the holes of the five-core socket 300 are respectively: a normal power supply line 51, an ignition switch line 52 and an alarm light line 53. In this way, the main harness 1 is finally composed of the above-mentioned seven-core lamp wire and three normal power supply lines 51, ignition switch lines 52 and alarm light lines 53 for ABS. Due to the high integration of the main harness 1, the harness layout is simpler, which saves a lot of wiring work, shortens assembly time, improves work efficiency, and enhances economic benefits.

[0031] The branch harness 3 is used to realize the electrical connection between the wires in the main harness 1 that are matched with the brake system and the five-core socket 300. The branch harness 3 also has a housing 10 for wrapping the wires, and the branch harness 3 includes a plurality of third wires 31 wrapped together. One end of the plurality of third wires 31 is provided with a first connector 32 to respectively connect with the second ground wire terminal 112 and the terminal of the plurality of second wires 13; the other ends of the plurality of third wires 31 are used to connect with the five-core socket 300 together, so as to be connected to the brake system of the semi-trailer.

[0032] The first connector 32 is plugged into and matched with the first socket 14 so that the corresponding wires are electrically connected to each other.

[0033] Please refer to Figure 2The first connector 32 is specifically a five-core aviation plug, which includes a socket 321 and a plurality of plug terminals 322; the socket 321 has a plurality of through holes, and each plug terminal 322 is correspondingly arranged in each through hole, and one end of each plug terminal 322 is respectively crimped with the end of each third wire 31, and the other end is used to be respectively connected with the second ground wire terminal 112 and the terminal of the plurality of second wires 13. That is, the ground wire 11, the normal power supply line 51, the ignition switch line 52 and the alarm light line 53 are strictly electrically connected to each plug terminal 322 of the five-core aviation plug in accordance with the prescribed interface definition.

[0034] In this embodiment, the other terminal of the ground wire 11 and the other terminal of each second wire 13 extend from an opening at the rear end of the housing 10 to be used together for connecting to the on-board computer of the semi-trailer. Specifically, the other terminal of the ground wire 11 and the other terminal of each second wire 13 are provided with a second socket 16. Furthermore, the semi-trailer wiring harness 100 also includes an ABS connecting wire 6, one end of which is provided with a second connector 61 adapted to the second socket 16, and the other end is connected to the on-board computer (Electronic Control Unit, referred to as ECU). Among them, the second socket 16 is specifically a five-core socket, and the second connector 61 is correspondingly a five-core aviation plug.

[0035] In this embodiment, the rear position lamp line 412, the left turn signal lamp 421 / brake light 431 / reverse light 441 / marker lamp line 451, the right turn signal lamp 422 / brake light 432 / reverse light 442 / marker lamp line 452, the clearance lamp line 46, the license plate lamp line 47 and the fog lamp line 48 of the seven-core lamp line all extend from the rear end opening of the housing 10, and are respectively connected to the corresponding lamps through the plugs at the ends of the above-mentioned wires. The left marker lamp line and the right marker lamp line both have multiple copper core wires inside, wherein the core wires in the left marker lamp line are separated at intervals along the extension direction of the main wiring harness 1, and the core wires extend through the notch on the housing 10, and finally the left marker lamp line forms multiple left marker lamp branches 451 located on one side of the main wiring harness 1, so as to correspond to the multiple left marker lamps connected to the left side of the semi-trailer. The right marker lamp line is similarly separated to form multiple right marker lamp branches 452. Each left marker light branch line 451 and each right marker light branch line 452 are symmetrically arranged with respect to the main wiring harness 1 .

[0036] Furthermore, the main wiring harness 1 also includes a plurality of wiring harness components 15. The plurality of wiring harness components 15 are all arranged on the outer periphery of the housing 10 and are spaced apart along the extension direction of the main wiring harness 1. Each wiring harness component 15 is arranged at the branching point between the left identification light branch line 451 and the right identification light branch line 452 and the main wiring harness 1, as well as at the front and rear end ports of the main wiring harness 1. Specifically, the wiring harness component 15 is a hollow casing, which is sleeved on the outer periphery of the housing 10 to stabilize the wiring harness and prevent the wiring from running.

[0037] In this embodiment, the main wiring harness 1 is provided with a clearance light reserved interface 7 at both ends in the extension direction, and the clearance light reserved interface 7 is exposed from the housing 10, and the clearance light reserved interface 7 is connected to the first wire 12 (i.e., the clearance light wire 46) corresponding to the clearance light. In this way, the special requirements of the van semi-trailer and the grid vehicle for the clearance light can be met, and the versatility can be improved.

[0038] In this embodiment, the main wiring harness 1 is provided with a power supply interface 8, which is exposed on the housing 10 and is connected to the second wire 13 (i.e., the normal power supply line 51) corresponding to the power supply. Considering the popularization of intelligent vehicles, the power supply interface 8 is reserved on the main wiring harness 1 to facilitate the power supply of corresponding intelligent equipment. Moreover, the power supply interface 8 can be expanded in a multi-level Y shape according to actual needs and power. Figure 1 Two power supply branches 81 can be extended through the terminal at the power supply interface 8, and the end of each power supply branch line 81 has a connector for supplying power.

[0039] In this embodiment, a CAN bus interface 9 (Controller Area Network, CAN for short) is provided on the main wiring harness 1. The CAN bus interface 9 is exposed on the housing 10 and is connected to the second wire 13 corresponding to the power supply, thereby being electrically connected to the on-board computer of the semi-trailer, realizing communication between various electrical components of the semi-trailer, and providing a basis for vehicle data communication.

[0040] In summary, the semi-trailer wiring harness 100 provided by the present invention has the following advantages and positive effects:

[0041] Firstly, the main wiring harness 1 combines the two wiring harnesses used to supply power to the lighting assembly and the braking system of the semi-trailer into one by adopting a common grounding wire 11 without affecting the normal use of the wiring harness interface, thereby achieving a high degree of concentration of the wiring harness, reducing the number of wires and connectors, and reducing the cost of the entire vehicle wiring harness; at the same time, the wiring harness layout is simpler, thereby improving the assembly efficiency of the semi-trailer vehicle.

[0042] Secondly, the main wiring harness 1 is provided with reserved interfaces 7 for clearance lights at the front and rear ends in the extension direction to meet the special needs of van semi-trailers and warehouse fence vehicles for clearance lights. It has high versatility and is compatible with skeleton vehicles, warehouse fence vehicles and various van semi-trailers. The main wiring harness 1 is provided with a power supply interface 8. Considering the popularization of vehicle intelligence, the power supply interface 8 is reserved on the main wiring harness 1 to facilitate the power supply of corresponding intelligent equipment, providing an application basis for the development of intelligent equipment and promoting the intelligent upgrade of semi-trailers.

[0043] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the present invention can be embodied in a variety of forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A semi-trailer wiring harness, characterized in that: include: A main wiring harness, comprising a grounding wire, a plurality of first wires, a plurality of second wires, and a shell that wraps the wires into one body; The wiring terminals of each wire extend out of the housing; one wiring terminal of the grounding wire is divided into two strands, namely a first strand grounding wire wiring terminal and a second strand grounding wire wiring terminal; the first strand grounding wire wiring terminal and the wiring terminals of the plurality of first wires are used together to connect a seven-core socket for connecting different lamps of the lighting assembly of the semi-trailer; A branch wire harness, comprising a plurality of third wires wrapped together; one end of the plurality of third wires is respectively connected to the second ground wire terminal and the terminal of the plurality of second wires; the other ends of the plurality of third wires are used to connect to a five-core socket for connecting to the brake system of the semi-trailer; The plurality of second conductors include a normal power supply line, an ignition switch line and an alarm light line. The other terminal of the grounding wire and the other terminal of each second conductor extend out of the housing together for connecting to the on-board computer of the semitrailer.

2. The semi-trailer wiring harness according to claim 1, characterized in that: The main wiring harness further comprises a first socket, the first socket being connected to the second ground wire terminal and the terminals of the plurality of second conductors respectively; The branch wiring harness further includes a first connector, wherein the first connector is respectively connected to one end of a plurality of the third wires; The first socket is plugged into and matched with the first connector so that the corresponding wires are electrically connected to each other.

3. The semi-trailer wiring harness according to claim 2, characterized in that: The first connector includes a socket and a plurality of plug-in terminals; the socket has a plurality of through holes, each of the plug-in terminals is correspondingly inserted into each of the through holes, one end of each of the plug-in terminals is respectively crimped with the end of each of the third wires, and the other end is used to be respectively connected with the second ground wire terminal and the terminal of the plurality of second wires.

4. The semi-trailer wiring harness according to claim 3, characterized in that: The first connector is a five-core plug.

5. The semi-trailer wiring harness according to claim 1, characterized in that: The main wiring harness is provided with reserved interfaces for clearance lights at the front and rear ends in the extension direction, respectively. The reserved interfaces for clearance lights are exposed from the housing, and the reserved interfaces for clearance lights are connected to the first wire corresponding to the connection of the clearance lights.

6. The semi-trailer wiring harness according to claim 1, characterized in that: The main wiring harness is provided with a power supply interface, the power supply interface is exposed on the housing, and the power supply interface is connected to the normal power supply line.

7. The semi-trailer wiring harness according to claim 1, characterized in that: The main wiring harness is provided with a CAN bus interface, the CAN bus interface is exposed from the housing, and the CAN bus interface is connected to the normal power supply line.

8. The semi-trailer wiring harness according to claim 1, characterized in that: Also included are a plurality of wiring harnesses; A plurality of the wire harness components are sleeved on the outer circumference of the housing and are distributed at intervals along the extending direction of the main wire harness.

9. A semitrailer, characterized in that: It includes a frame, a seven-core socket, a five-core socket, two spiral connecting wires for connecting to a tractor power supply, and a semi-trailer wiring harness as described in any one of claims 1 to 8; the seven-core socket and the five-core socket are arranged at intervals on the front end beam of the frame, one end of the seven-core socket and one end of the five-core socket are respectively connected to the two spiral connecting wires, the other end of the seven-core socket is connected to the first ground wire terminal of the main wiring harness and the terminal of multiple first wires, and the other end of the five-core socket is connected to the terminal of each third wire of the branch wiring harness.

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