Wire harness for commercial vehicle

Abstract

The utility model relates to the technical field of automobile wire harnesses, and particularly discloses a commercial vehicle wire harness, which comprises an automobile body wire harness assembly and a branch wire harness assembly, the branch wire harness assembly comprises a main wire harness and a plurality of branch wire harnesses, the plurality of branch wire harnesses are connected with the main wire harness, the main wire harness is connected with the automobile body wire harness assembly through a connecting piece, and the main wire harness is connected with the automobile body wire harness assembly through the connecting piece. The plurality of branch wire harnesses are respectively connected with different electric devices through connecting pieces, the main wire harness and the branch wire harnesses are FFC wire harnesses, each FFC wire harness comprises a plurality of wire cores arranged side by side at intervals and an insulating layer wrapping the periphery of each wire core, and the connecting pieces penetrate through the insulating layers and then are connected with the wire cores. The main wire harness and the branch wire harness of the branch wire harness assembly are FFC wire harnesses, the FFC wire harnesses are connected with a traditional vehicle body wire harness assembly through the connecting piece, the wire harness size of some areas is reduced on the premise that the current-carrying capacity of the whole vehicle wire harness is guaranteed, the weight of the wire harness is reduced, and the wiring difficulty at the position where the wiring space is small is reduced. Therefore, the FFC wire harness can be applied to the field of commercial vehicles.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile wiring harnesses, in particular to a commercial vehicle wiring harness. Background Art

[0002] As the electrical functions of commercial vehicles gradually increase, the corresponding wiring harness outer diameter becomes larger and the volume increases. However, in certain locations of commercial vehicles such as the roof, mid-floor, and elevated boxes, the space available for wiring harness layout is small, making traditional wiring harness layout difficult.

[0003] In this regard, the prior art provides an FFC harness suitable for passenger cars, which reduces the volume of the harness by setting up the FFC harness, thereby facilitating layout and improving lightness. However, due to its structural limitations, the FFC harness cannot carry a large current. It can still meet the needs of passenger cars, but it cannot meet the use requirements of commercial vehicles, resulting in the FFC harness being unable to be directly used as a complete vehicle harness in the commercial vehicle field. Utility Model Content

[0004] The utility model aims to provide a commercial vehicle wiring harness to solve the problem that the existing commercial vehicle wiring harness cannot directly apply the FFC wiring harness.

[0005] The utility model provides a commercial vehicle wiring harness, including a vehicle body wiring harness assembly and a branch wiring harness assembly, wherein the branch wiring harness assembly includes a main wiring harness and a plurality of branch wiring harnesses, wherein the plurality of branch wiring harnesses are connected to the main wiring harness, the main wiring harness is connected to the vehicle body wiring harness assembly through a connector, and the plurality of branch wiring harnesses are respectively connected to different electrical components through the connectors, the main wiring harness and the branch wiring harness are both FFC wiring harnesses, the FFC wiring harness includes a plurality of wire cores arranged side by side at intervals and an insulating layer wrapped around the outer periphery of the wire cores, and the connector is connected to the wire cores after passing through the insulating layer.

[0006] As a preferred technical solution for commercial vehicle wiring harnesses, the connector includes a connecting end and a plug-in end, the connecting end is connected to the wire core, and the plug-in end is plug-connected to the vehicle body wiring harness assembly or electrical device.

[0007] As the preferred technical solution for commercial vehicle wiring harnesses, the connecting end includes a substrate, which is integrated with the plug-in end. Both sides of the substrate are provided with thorns, and the thorns on both sides of the substrate are staggered along the length direction of the substrate. The thorns can pass through the insulation layer and connect to the wire core.

[0008] As a preferred technical solution for commercial vehicle wiring harnesses, multiple thorns are provided on both sides of the substrate, and the multiple thorns located on the same side of the substrate are spaced apart along the length direction of the substrate.

[0009] As a preferred technical solution for commercial vehicle wiring harnesses, two thorn teeth are provided on both sides of the substrate, and the two thorn teeth on one side of the substrate are staggered with the two thorn teeth on the other side of the substrate.

[0010] As a preferred technical solution for commercial vehicle wiring harnesses, the barbed tooth is provided with a tip, a guide surface and a retaining portion, the retaining portion is integrated with the substrate, and the tip can pass through the insulating layer.

[0011] As the preferred technical solution for commercial vehicle wiring harnesses, the barbed tooth has an initial state and a connected state. When the barbed tooth is in the initial state, the retaining portion is perpendicular to the substrate; when the barbed tooth is in the connected state, the end of the retaining portion close to the substrate passes through the insulating layer, the end of the retaining portion away from the substrate is bent toward the center of the substrate, the tip passes through the insulating layer and contacts the substrate, and the barbed tooth is connected to the wire core.

[0012] As a preferred technical solution for the commercial vehicle wiring harness, the base plate is provided with guide protrusions along its length direction, and the guide protrusions are used to guide the tip to the side of the base plate.

[0013] As a preferred technical solution for the commercial vehicle wiring harness, when the spike is in an initial state, the guide surface is arranged on a side of the retaining portion away from the guide protrusion.

[0014] As a preferred technical solution for commercial vehicle wiring harnesses, a weight-reducing groove is provided below the guide protrusion.

[0015] The beneficial effects of the utility model are:

[0016] The utility model provides a commercial vehicle wiring harness, which can reduce the volume of the wiring harness in certain areas, improve the lightness of the wiring harness, and reduce the wiring difficulty in locations with small wiring space, by setting the main wiring harness and branch wiring harness of the branch wiring harness assembly as FFC wiring harnesses, and setting connectors to connect the FFC wiring harness with the traditional vehicle body wiring harness assembly, while ensuring the current carrying capacity of the entire vehicle wiring harness. Therefore, the FFC wiring harness can be used in the field of commercial vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of a branch wiring harness assembly in an embodiment of the present utility model;

[0018] Figure 2 It is a cross-sectional schematic diagram of the main line bundle in the embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the connection between the connector and the FFC harness in an embodiment of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the connecting member in the initial state in the embodiment of the utility model;

[0021] Figure 5 This is a structural schematic diagram of the connecting member in the embodiment of the utility model in a connected state;

[0022] Figure 6 This is one of the schematic diagrams of the process of connecting the connector and the FFC harness in the embodiment of the utility model;

[0023] Figure 7 This is the second schematic diagram of the process of connecting the connector and the FFC harness in the embodiment of the utility model.

[0024] In the figure:

[0025] 100, FFC wiring harness; 110, insulation layer; 120, wire core; 200, vehicle body wiring harness assembly;

[0026] 1. Main line harness; 2. Branch line harness; 3. Connector; 31. Connecting end; 32. Plug end; 4. Electrical components;

[0027] 311, thorn tooth; 3111, tip; 3112, guide surface; 3113, holding portion; 312, substrate; 3121, guide protrusion. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solution of the utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] like Figure 1-Figure 7 As shown, the utility model provides a commercial vehicle wiring harness, which includes a body wiring harness assembly 200 and a branch wiring harness assembly. The branch wiring harness assembly includes a main wiring harness 1 and a plurality of branch wiring harnesses 2. The plurality of branch wiring harnesses 2 are connected to the main wiring harness 1. The main wiring harness 1 is connected to the body wiring harness assembly 200 through a connector 3. The plurality of branch wiring harnesses 2 are respectively connected to different electrical components 4 through the connector 3. The main wiring harness 1 and the branch wiring harness 2 are both FFC wiring harnesses 100. The FFC wiring harness 100 includes a plurality of wire cores 120 arranged side by side and spaced apart, and an insulating layer 110 wrapped around the outer periphery of the wire core 120. The connector 3 passes through the insulating layer 110 and is connected to the wire core 120. By setting the main wiring harness 1 and the branch wiring harness 2 of the branch wiring harness assembly to the FFC wiring harness 100, and setting the connector 3 to connect the FFC wiring harness 100 with the traditional vehicle body wiring harness assembly 200, the wiring harness volume in certain areas, such as the ceiling area, the mid-floor area, and the elevated box area, can be reduced while ensuring the current carrying capacity of the vehicle wiring harness. While meeting the use requirements, the lightweight of the wiring harness is improved, and the wiring difficulty in locations with smaller wiring space is reduced. Therefore, the FFC wiring harness 100 can be used in the field of commercial vehicles. The electrical device 4 can be a reading light, a warning light, a buzzer, a sound alarm, etc., which is not specifically limited in this embodiment.

[0033] Furthermore, if Figure 3-Figure 7As shown, the connector 3 includes a connecting end 31 and a plug end 32. The connecting end 31 is connected to the wire core 120, and the plug end 32 is plug-connected to the vehicle body wiring harness assembly 200 or the electrical device 4. The vehicle body wiring harness assembly 200 and the electrical device 4 can adopt the structure of the prior art in this field, and no specific limitation is made here. The FFC wiring harness 100 is connected to the wiring harness or electrical device 4 in the prior art through the plug connector, which can meet the wiring requirements of a small space on the one hand, and can also ensure the requirements of some areas of the commercial vehicle to carry larger currents on the other hand.

[0034] Specifically, the connection end 31 includes a substrate 312, which is integrated with the plug end 32, and the substrate 312 is provided with spikes 311 on both sides. The spikes 311 on both sides of the substrate 312 are staggered along the length direction of the substrate 312, and the spikes 311 can pass through the insulating layer 110 and connect to the wire core 120. When connecting the connection end 31 to the FFC harness 100, please refer to Figure 6-Figure 7 As shown, the barbed teeth 311 are first passed through the insulating layer 110, and then the barbed teeth 311 are reversely rolled back to pierce and pass through the insulating layer 110 again, so that the barbed teeth 311 can achieve mechanical interlocking connection and electrical connection with the wire core 120 through rolling back, and connect with the vehicle body wire harness assembly 200 or the electrical device 4 through the plug-in terminal 32, and finally connect the FFC wire harness 100 with the traditional wire harness or the electrical device 4. The staggered arrangement of the barbed teeth 311, on the one hand, ensures that the connection between the connector 3 and the FFC wire harness 100 is more reliable, and on the other hand, the staggered arrangement of the barbed teeth 311 can also prevent the barbed teeth 311 from interfering with each other during the rolling process.

[0035] Optionally, the number of spikes 311 on both sides of the substrate 312 is multiple, so as to further enhance the reliability of the connection between the connector 3 and the FFC harness 100. The multiple spikes 311 on the same side of the substrate 312 are spaced apart along the length direction of the substrate 312 to ensure that the spikes 311 on each side of the substrate 312 will not interfere with the spikes 311 on the other side during the rewinding process. Figure 3-Figure 5 As shown, in this embodiment, two thorn teeth 311 are arranged on both sides of the substrate 312, and the two thorn teeth 311 located on one side of the substrate 312 are alternately arranged with the two thorn teeth 311 located on the other side of the substrate 312.

[0036] Specifically, Figure 3-Figure 7As shown, the thorn tooth 311 is provided with a tip 3111, a guide surface 3112 and a holding portion 3113. One end of the holding portion 3113 is integrally provided with the substrate 312, and the guide surface 3112 is provided at the end of the holding portion 3113 away from the substrate 312. The guide surface 3112 is used for guiding during the rewinding process of the thorn tooth 311, and the tip 3111 can pass through the insulating layer 110 of the FFC harness 100. By providing the tip 3111 and the guide surface 3112, the thorn tooth 311 can more easily pass through the insulating layer 110 during the connection process with the FFC harness 100, and the installation is more convenient. The thorn tooth 311 has an initial state and a connected state. When the thorn tooth 311 is in the initial state, the retaining portion 3113 is perpendicular to the substrate 312; when the thorn tooth 311 is in the connected state, the end of the retaining portion 3113 close to the substrate 312 passes through the insulating layer 110, and the end of the retaining portion 3113 away from the substrate 312 is bent toward the center of the substrate 312, the tip 3111 passes through the insulating layer 110 and contacts the substrate 312, and the thorn tooth 311 is connected to the wire core 120.

[0037] The spike 311 is connected to the FFC harness 100 by crimping, and the crimping can be performed using a press and a crimping head in the prior art. Figure 6 As shown, the retaining portion 3113 is perpendicular to the substrate 312. The FFC harness 100 is placed above the spiked teeth 311. The press drives the press head to press downward. The tip 3111 first pierces the insulating layer 110 from bottom to top and passes through the top of the insulating layer 110. At this time, the tip 3111 contacts the press head. The working surface of the press head is set to m-type or n-type, which is determined according to the use requirements. As the press head presses downward, the tip 3111 moves along the working surface of the press head, and the retaining portion 3113 passes through the insulating layer 110 and bends. The press continues to press downward, as shown in FIG. Figure 7 As shown, the tip 3111 continues to move along the working profile of the pressure head and penetrates the insulating layer 110 from above the insulating layer 110, and the retaining portion 3113 continues to bend until the tip 3111 passes through the insulating layer 110 again. At this time, the barbed teeth 311 are completely rewound and tightly fit with the wire core 120 by crimping, achieving mechanical interlocking connection and electrical connection.

[0038] Furthermore, if Figure 4-Figure 7 As shown, the substrate 312 is provided with a guide protrusion 3121 along its length direction, and the guide protrusion 3121 is located in the middle of the substrate 312. The guide protrusion 3121 is set as an arc-shaped structure. When the tip 3111 passes through the insulating layer 110 for the second time, the tip 3111 contacts the guide protrusion 3121 and continues to move along the guide protrusion 3121 toward the direction close to the holding portion 3113, further strengthening the connection effect between the spiked teeth 311 and the wire core 120.

[0039] During the process of crimping the spike 311 to the FFC harness 100, when the spike 311 is in the initial state, the guide surface 3112 is arranged on the side of the retaining portion 3113 away from the guide protrusion 3121, so that during the entire process of the spike 311 rolling back, the guide surface 3112 cooperates along the working surface of the pressing head and the guide protrusion 3121 in sequence, making the crimping process more reliable and reducing the risk of poor crimping.

[0040] Optionally, a weight-reducing groove is provided below the guide protrusion 3121 , thereby reducing the weight of the connector 3 while ensuring the structural strength, thereby facilitating lightweight improvement.

[0041] The commercial vehicle wiring harness provided in this embodiment is modified on the basis of the traditional vehicle wiring harness, and some areas with limited installation space are set as FFC wiring harness 100. The connection between FFC wiring harness 100 and the traditional wiring harness is realized through the connector 3, which on the one hand meets the wiring requirements of the whole vehicle and improves the lightweight; on the other hand, a new solution for connecting FFC wiring harness 100 with traditional wiring harness is provided, which broadens the application scenarios of FFC wiring harness 100 in the field of commercial vehicles.

[0042] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A commercial vehicle wiring harness, comprising a vehicle body wiring harness assembly (200), characterized in that: The invention also comprises a branch wiring harness assembly, wherein the branch wiring harness assembly comprises a main wiring harness (1) and a plurality of branch wiring harnesses (2), wherein the plurality of branch wiring harnesses (2) are connected to the main wiring harness (1), wherein the main wiring harness (1) is connected to a vehicle body wiring harness assembly (200) via a connector (3), wherein the plurality of branch wiring harnesses (2) are respectively connected to different electrical components (4) via the connector (3), wherein both the main wiring harness (1) and the branch wiring harness (2) are FFC wiring harnesses (100), wherein the FFC wiring harness (100) comprises a plurality of wire cores (120) arranged side by side and spaced apart, and an insulating layer (110) wrapped around the outer periphery of the wire cores (120), and wherein the connector (3) passes through the insulating layer (110) and is connected to the wire cores (120).

2. The commercial vehicle wiring harness according to claim 1, characterized in that: The connector (3) comprises a connecting end (31) and a plug-in end (32); the connecting end (31) is connected to the wire core (120), and the plug-in end (32) is plug-connected to the vehicle body wiring harness assembly (200) or the electrical device (4).

3. The commercial vehicle wiring harness according to claim 2, characterized in that: The connecting end (31) comprises a base plate (312), the base plate (312) and the plug end (32) are integrally arranged, both sides of the base plate (312) are provided with barbed teeth (311), the barbed teeth (311) on both sides of the base plate (312) are staggered along the length direction of the base plate (312), and the barbed teeth (311) can pass through the insulating layer (110) and be connected to the wire core (120).

4. The commercial vehicle wiring harness according to claim 3, characterized in that: The thorn teeth (311) on both sides of the base plate (312) are arranged in plurality, and the plurality of thorn teeth (311) located on the same side of the base plate (312) are arranged at intervals along the length direction of the base plate (312).

5. The commercial vehicle wiring harness according to claim 4, characterized in that: The number of the thorn teeth (311) on both sides of the base plate (312) is two, and the two thorn teeth (311) located on one side of the base plate (312) and the two thorn teeth (311) located on the other side of the base plate (312) are arranged alternately.

6. The commercial vehicle wiring harness according to claim 3, characterized in that: The barbed tooth (311) is provided with a tip (3111), a guide surface (3112) and a retaining portion (3113); the retaining portion (3113) is integrally provided with the substrate (312); and the tip (3111) is capable of passing through the insulating layer (110).

7. The commercial vehicle wiring harness according to claim 6, characterized in that: The thorn tooth (311) has an initial state and a connected state. When the thorn tooth (311) is in the initial state, the retaining portion (3113) is perpendicular to the substrate (312); when the thorn tooth (311) is in the connected state, one end of the retaining portion (3113) close to the substrate (312) passes through the insulating layer (110), and one end of the retaining portion (3113) away from the substrate (312) is bent toward the center of the substrate (312), the tip (3111) passes through the insulating layer (110) and contacts the substrate (312), and the thorn tooth (311) is connected to the wire core (120).

8. The commercial vehicle wiring harness according to claim 7, characterized in that: The base plate (312) is provided with a guide protrusion (3121) along its length direction, and the guide protrusion (3121) is used to guide the tip (3111) to the side of the base plate (312).

9. The commercial vehicle wiring harness according to claim 8, characterized in that: When the spiked tooth (311) is in the initial state, the guide surface (3112) is arranged on a side of the retaining portion (3113) away from the guide protrusion (3121).

10. The commercial vehicle wiring harness according to claim 8, characterized in that: A weight-reducing groove is provided below the guide protrusion (3121).

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