Vehicle wire harness grommet structure and vehicle

Abstract

The utility model relates to a vehicle wire harness, concretely relates to wire harness protection box structure and vehicle, including with the wire harness protection box body fixed to the car body, be equipped with the through -hole of along the front -back direction through setting in the wire harness protection box body, a plurality of baffle are connected in the through -hole, through the baffle will the through -hole is divided into a plurality of passageways, be equipped with a plurality of along the protruding portion of passageway axial extension on the passageway inner wall, the protruding portion and the first installation part or the mistake prevention part on wire harness connector outer wall are adapted. It can arrange more wire harness connector in smaller space, reduce the car body fixed hole position and play certain protection effect to wire harness connector.

Description

Technical Field

[0001] This utility model relates to vehicle wiring harnesses, specifically to the structure of a vehicle wiring harness protection box and the vehicle itself. Background Technology

[0002] As the automotive industry advances towards intelligence, electrification, and connectivity, the core of in-vehicle functions has shifted from being dominated by traditional mechanical performance to building a digital ecosystem based on electronic and electrical systems. Against this backdrop, innovative functions such as autonomous driving, in-vehicle infotainment systems, and advanced driver assistance systems (ADAS) have seen explosive growth, directly driving a significant increase in the number of electronic control units (ECUs) in a single vehicle, surging from dozens in the early days to over 150. Electrical nodes such as sensors, actuators, and human-machine interface devices have also expanded exponentially.

[0003] According to industry statistics, the total length of wiring harnesses in current high-end vehicles has exceeded 5 kilometers, with over 3,000 independent connection points. This has propelled the wiring harness system to become the second heaviest component in a vehicle, second only to the engine. A direct consequence of this change is the increasing space occupied by wiring harnesses, leading to a significant increase in the number of mounting brackets and holes required. Meanwhile, the overall vehicle size has not increased significantly compared to traditional models, further exacerbating the already narrow gaps between the body and interior trim. Therefore, efficiently arranging a massive number of wiring harnesses within limited interior space has become one of the core challenges in automotive wiring harness design and vehicle integration. Utility Model Content

[0004] The purpose of this utility model is to provide a vehicle wiring harness protection box structure and vehicle, which can arrange more wiring harness connectors in a smaller space, reduce the number of body fixing holes, and provide a certain degree of protection for the wiring harness connectors.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: In a first aspect, this utility model discloses a vehicle wiring harness protection box structure, including a protection box body fixed to the vehicle body. The protection box body has a through hole that runs through the front and rear directions. Several partitions are connected inside the through hole, and the partitions divide the through hole into several channels. Several protrusions extending along the channel axis are provided on the inner wall of the channel. The protrusions are adapted to a first mounting part or anti-misalignment part on the outer wall of the wiring harness connector.

[0006] Furthermore, the inner wall of the channel is provided with a first reinforcing rib extending circumferentially, and the first reinforcing rib is arranged to intersect with a plurality of the protrusions.

[0007] Furthermore, a second mounting portion for fixing to the vehicle body is provided on the outer wall of the cable protection box body.

[0008] Furthermore, the second mounting part includes a plurality of snap-fit ​​parts integrally formed with the cable protection box body and located on the outer wall of the cable protection box body.

[0009] Furthermore, the second mounting part also includes a mounting through hole provided on the side wall of the cable protection box body, through which mounting bolts pass to be fixedly connected to the vehicle body.

[0010] Furthermore, the outer wall of the cable protection box body is provided with an extension at the position corresponding to the mounting through hole to increase the axial length of the mounting through hole.

[0011] Furthermore, there are two latching parts, and the mounting hole and the two latching parts are arranged on the same side wall of the cable protection box body, with the two latching parts located on both sides of the mounting hole.

[0012] Furthermore, the mounting hole is an oblong hole.

[0013] Furthermore, a second reinforcing rib is connected between the outer wall of the cable protection box body and the outer wall of the extension.

[0014] Secondly, this utility model discloses a vehicle that includes the aforementioned vehicle wiring harness protection box structure.

[0015] This utility model has the following unexpected beneficial effects: 1. This utility model divides the interior of the cable protection box into several independent channels by using partitions, realizing the integrated arrangement of multiple connectors in a single box. Multiple wire harness connectors can be installed through the channels, eliminating the need to reserve fixed positions on the vehicle body or interior. This is equivalent to expanding the installation space of multi-level / multi-station wire harness connectors within the limited longitudinal / lateral space, solving the problem of difficulty in arranging a large number of wire harness connectors in narrow vehicle interiors, while avoiding the risk of interference between wire harness connectors and interior mounting holes or other components.

[0016] 2. The protrusion of this utility model extends along the channel axis and is closely matched with the first mounting part or anti-misalignment part of the wire harness connector. It can restrict the axial movement of the wire harness connector in the channel, avoid the wire harness connector from becoming loose or having poor contact, and at the same time eliminate the abnormal noise caused by the wire harness connector shaking and colliding with the wire protection box, thereby improving the quietness of the vehicle.

[0017] 3. The cable protection box body of this utility model encloses the wiring harness connector, preventing direct collision and friction between the connector and the vehicle body sheet metal and interior parts during installation or driving, thus reducing wear on the connector shell or deformation of the pins. Furthermore, the enclosed channel structure prevents dust, lint, and other impurities from entering the connector pins, while also preventing accidental small drops of water from dripping directly onto the connector surface (such as air conditioning condensate or minor water seepage from car washes), avoiding short circuits and burnouts in the wiring harness circuit caused by impurities and water droplets, and extending the service life of the connector. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model.

[0019] Figure 1 A schematic diagram of the vehicle wiring harness protection box structure according to an embodiment of the present invention is shown.

[0020] Figure 2 This diagram illustrates the interaction between the wiring harness connector and the vehicle wiring harness protection box structure according to an embodiment of the present invention.

[0021] In the figure, 1—the main body of the cable box, 2—the partition, 3—the channel, 4—the protrusion, 5—the first reinforcing rib, 6—the snap-fit ​​part, 7—the mounting hole, 8—the extension part, 9—the second reinforcing rib, 10—the wire harness connector, 11—the mounting bolt, and 12—the metal bushing. Detailed Implementation

[0022] The embodiments of this utility model will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be understood that the preferred embodiments are only for illustrating this utility model and not for limiting the scope of protection of this utility model.

[0023] In one embodiment, see Figure 1 and Figure 2As shown, this utility model discloses a vehicle wiring harness protection box structure, including a protection box body 1 fixed to the vehicle body. The protection box body 1 has a through hole that runs through the front and rear directions. Several partitions 2 are connected inside the through hole, and the through hole is divided into several channels 3 by the partitions 2. Several protrusions 4 extending axially along the channel 3 are provided on the inner wall of the channel 3. The protrusions 4 are adapted to the first mounting part or anti-misalignment part on the outer wall of the wiring harness connector 10.

[0024] Generally, wiring harness connectors 10, unless under special circumstances, need to be secured to the vehicle body, interior trim, or other fixed points to prevent them from shaking and causing abnormal noises, damage, or even malfunctions. Occasionally, wiring harness connectors 10 may be secured to the wiring harness itself or other non-rigid parts, but in any case, they must be secured relative to other components. When connectors are fixed to the vehicle body, they are typically secured using snap-fit ​​fasteners into the body's slots, requiring each connector to have a dedicated slot. Given the complexity of current vehicle functions, sometimes there can be as many as 4-5 wiring harness connectors 10 at the junction of the instrument panel wiring harness and the chassis wiring harness, significantly occupying interior space and affecting the ease of wiring harness assembly. As the number of wiring harness connectors 10 increases, if multiple wiring harness connectors 10 are arranged in the same position at the same time, the general body hole fixing will not meet the arrangement requirements. This will most likely cause the wiring harness connectors to interfere with the interior mounting holes or other interior components, or even exceed the outer boundary of the interior. In this case, it is necessary to solve the problem by using other installation methods or finding other wiring harness fixing points. This invention is mainly for this purpose.

[0025] This utility model divides the interior of the cable protection box body 1 into several independent channels 3 by means of a partition 2, so as to realize the integrated arrangement of multiple connectors in a single box. Multiple wire harness connectors 10 can be installed through the channels 3, without the need to reserve fixed positions in the vehicle body or interior. This is equivalent to expanding the installation space of multiple levels / positions of wire harness connectors 10 in the limited longitudinal / lateral space, solving the problem of difficulty in arranging a large number of wire harness connectors 10 in the narrow vehicle interior, and avoiding the risk of interference between wire harness connectors 10 and interior mounting holes and other components.

[0026] The protrusion 4 of this utility model extends axially along the channel 3 and is closely adapted to the first mounting part or anti-misalignment part of the wire harness connector 10. It can restrict the axial movement of the wire harness connector 10 in the channel 3, avoid the wire harness connector 3 from becoming loose or having poor contact, and at the same time eliminate the abnormal noise caused by the wire harness connector 10 shaking and colliding with the wire protection box body 1, thereby improving the quietness of vehicle driving.

[0027] The cable protection box body 1 of this utility model encloses the wiring harness connector 10, preventing direct collision and friction between the wiring harness connector 10 and the vehicle body sheet metal and interior parts during installation or driving, thus reducing wear on the outer shell or deformation of the pins of the wiring harness connector 10. Furthermore, the enclosed channel structure prevents dust, lint, and other impurities from entering the pin positions of the wiring harness connector 10, while also preventing accidental small drops of water from dripping directly onto the surface of the wiring harness connector 10 (such as air conditioning condensate or small amounts of water seepage from car washes), avoiding short circuits and burnouts in the wiring harness circuit caused by impurities and water droplets, and extending the service life of the wiring harness connector 10.

[0028] For example, the partition 2 divides the through hole in the cable protection box body 1 into four independent channels 3. On the basis of the original planar installation, the fixing space of the wire harness connector 10 is increased in the longitudinal direction, so that up to four wire harness connectors 10 can be fixed at the same time in a limited space, making full use of the installation space and solving the problem of limited space in the vehicle.

[0029] The cable protection box body 1 is injection molded using PA66 or other alternative plastic materials. The outer layer of the cable protection box body 1 forms a bidirectional conductive columnar structure, which provides a passage for the wire harness while also providing a fixed space and a certain degree of protection for the internal wire harness and wire harness connector 10.

[0030] The cable protection box body 1 has a relatively simple external structure. By wrapping around the wire harness connector 10, it provides a certain degree of protection for the internal wire harness connector 10, preventing damage from direct contact with other components during installation and vehicle operation. It also provides some shielding. Placing the cable protection box body 1 in the dry area of ​​the vehicle prevents water droplets from dripping directly onto the surface of the wire harness connector 10 in the event of accidental minor water ingress, which could cause short circuits or burnout within the wire harness. The interior of the cable protection box body 1 is divided into four independent areas, each with a different fixing structure designed according to the shape of the individual wire harness connector 10. Therefore, the wire harness connector 10 can be directly clamped into the cable protection box without clips, providing installation error prevention while reducing the vertical space occupied by the wire harness connector 10 and increasing the convenience of fixing it. This means that when installing the wire harness connector 10, it is no longer necessary to install and fix each wire harness connector 10 individually; only the cable protection box body 1 needs to be fixed once.

[0031] As a preferred embodiment of this utility model, see [link to relevant documentation]. Figure 1 As shown, the inner wall of the channel 3 is provided with a first reinforcing rib 5 extending circumferentially, and the first reinforcing rib 5 is arranged to intersect with a plurality of the protrusions 4.

[0032] In this preferred embodiment, the first reinforcing rib 5 extends circumferentially along the channel 3, which is equivalent to forming a support skeleton on the inner wall of the channel 3. This can directly improve the deformation resistance of the channel 3 of the PA66 material cable box body 1, and prevent the inner wall of the channel 3 from being concave or expanded due to the long-term pressure of the weight of the wire harness connector 10 or the impact force when the vehicle is bumpy. This ensures that the channel 3 always maintains the designed cross-sectional shape, and prevents the wire harness connector 10 from loosening or failing to tighten due to the deformation of the channel 3. From the structural basis, this ensures the long-term load-bearing reliability of the cable box body 1 for multiple wire harness connectors 10.

[0033] The protrusion 4 must be precisely fitted with the first mounting part or the error-proofing part of the wire harness connector to achieve fixation or error prevention. If the protrusion 4 breaks or shifts, it will directly cause the wire harness connector 10 to fail to be fixed or to be installed incorrectly. The first reinforcing rib 5 is arranged intersecting with the protrusion 4, which is equivalent to providing a lateral support point for the protrusion 4. The intersecting first reinforcing rib 5 can disperse the force on the protrusion 4 and transmit the force to the entire channel 3, avoiding damage to the protrusion 4 due to excessive local force, ensuring that it maintains the fitting accuracy with the wire harness connector 10 for a long time, and ensuring the stability of the error prevention and fixing functions.

[0034] As a preferred embodiment of this utility model, see [link to relevant documentation]. Figure 1 As shown, the outer side wall of the cable protection box body 1 is provided with a second mounting part that is fixed to the vehicle body.

[0035] The complex interior and body structure of a vehicle often results in wiring harness connectors 10 being concentrated in areas such as the dashboard and chassis. Traditional wiring harness boxes rely solely on bottom fixation, which is easily limited by the layout of the body sheet metal and interior components, leading to interference between the fixing point and other parts, requiring the search for additional fixing points. In this preferred embodiment, the second mounting part is located on the outer wall of the wiring harness box body 1. Its fixing position can be flexibly designed according to the actual structure of the vehicle body (such as the top or middle of the side wall), avoiding potential interference areas at the bottom and selecting an empty fixing position on the side wall of the vehicle body. This eliminates the need to modify the original hole positions of the vehicle body or adjust other components, adapting to the installation needs of different vehicle models and different layout areas, and solving the layout pain points of difficult-to-find fixing points and easy interference.

[0036] As a preferred embodiment of this utility model, see [link to relevant documentation]. Figure 1 As shown, the second mounting part includes a plurality of snap-fit ​​parts 6 integrally formed with the cable protection box body 1 and located on the outer wall of the cable protection box body 1.

[0037] In this preferred embodiment, the snap-fit ​​part 6 is integrally formed with the cable protection box body 1, rather than being assembled later, thus avoiding the problem of connection breakage caused by vibration in assembled snap-fit ​​parts (such as glue or screw fixing). The integral structure of PA66 material can directly transmit the force of the snap-fit ​​part 6 to the cable protection box body 1, thereby improving the pull-out resistance of the snap-fit ​​part 6.

[0038] Furthermore, the snap-fit ​​part 6 can be directly snapped into the corresponding snap-fit ​​hole on the vehicle body without the need for bolts, wrenches or other tools. It can be completed simply by aligning and pressing, which greatly shortens the assembly time.

[0039] It should be noted that several snap-fit ​​parts 6 are distributed on the outer wall of the cable protection box body 1. During assembly, the appropriate snap-fit ​​parts can be selected according to the actual available hole positions on the vehicle body, without modifying the original structure of the vehicle body or adjusting the overall layout of the cable protection box. Different vehicle models have different layouts of body fixing holes. Several snap-fit ​​parts 6 can cover the hole position requirements of more vehicle models, eliminating the need to design a separate side wall fixing structure for a single vehicle model, thus improving the versatility of the cable protection box. For example, the same cable protection box structure can be adapted to different levels of passenger vehicles of the same brand.

[0040] As a preferred embodiment of this utility model, see [link to relevant documentation]. Figure 1 and Figure 2 As shown, the second mounting part also includes a mounting through hole 7 on the side wall of the cable protection box body 1, and the mounting bolt 11 passes through the mounting through hole 7 and is fixedly connected to the vehicle body.

[0041] In this preferred embodiment, the design of the mounting through hole 7 on the side wall in conjunction with the mounting bolt 11 is equivalent to adding a rigid fixing point outside the original fixing system, forming a multi-point fixing structure, and avoiding the snap-fit ​​part from breaking due to long-term pressure.

[0042] As a preferred embodiment of this utility model, see [link to relevant documentation]. Figure 1 and Figure 2 As shown, the outer wall of the cable protection box body 1 is provided with an extension 8 at the position corresponding to the mounting through hole 7, so as to increase the axial length of the mounting through hole 7.

[0043] The cable protection box 1 is often located in narrow spaces such as the dashboard and chassis, where the operator's field of vision is limited during assembly. Traditional short through holes require precise alignment of the mounting bolt 11 with the mounting through hole 7; otherwise, the bolt may be inserted at an angle, damaging the mounting through hole 7. The extension 8 extends the axial length of the through hole 7, effectively providing a long guide section for the bolt. During assembly, the head of the mounting bolt 11 can first be inserted into the sleeve formed by the extension 8. Even if there is a slight deviation in initial alignment, the inner wall of the extension 8 can guide the mounting bolt 11 to gradually correct its direction, ultimately ensuring precise insertion into the body hole. This eliminates the need for the operator to repeatedly adjust the position of the cable protection box 1 to align with the hole, especially in scenarios where the fully loaded cable protection box is difficult to lift, thus shortening assembly time and reducing operational difficulty.

[0044] As a preferred embodiment of this utility model, see [link to relevant documentation]. Figure 1 As shown, there are two latching parts 6. The mounting hole 7 and the two latching parts 6 are arranged on the same side wall of the cable protection box body 1, and the two latching parts 6 are symmetrically arranged on both sides of the mounting hole 7.

[0045] In this preferred embodiment, the fixing of the cable protection box body 1 is accomplished by two parallel snap-fit ​​parts 6 and a mounting through hole 7. Considering that the overall weight of the cable protection box body 1 is relatively high when fully equipped with connectors and pins, it may shake, fall off, or make abnormal noises during vehicle operation due to vehicle vibrations. Therefore, two parallel snap-fit ​​parts 6 are designed at the bottom of the cable protection box body as the main fixing structure of the cable protection box. In addition, a mounting through hole 7 is added to the bottom of the cable protection box body 1. A metal bushing 12 is added to the inner ring of the mounting through hole 7. By tightening the mounting bolts 11, the cable protection box body 1 is further fixed, solving the problem of the long time required to tighten multiple mounting bolts in ordinary cable protection box bodies 1.

[0046] During the initial assembly, the two snap-fit ​​parts 6 on the side wall can be directly snapped into the corresponding snap-fit ​​holes on the vehicle body. The symmetrical layout of the two snap-fit ​​parts 6 can quickly and securely position the cable protection box body 1, eliminating the need for manual continuous lifting of the fully loaded cable protection box. At the same time, it ensures that the mounting holes 7 on the side wall are accurately aligned with the bolt holes on the vehicle body. After securing and positioning, the operator can focus on bolt fixing without repeatedly adjusting the overall position of the cable protection box body, improving assembly efficiency and avoiding damage to the cable protection box body 1 caused by unstable lifting.

[0047] In a preferred embodiment of this utility model, the mounting through hole 7 is an oblong hole.

[0048] The axial length adjustment feature of the waist-shaped hole can directly provide assembly deviation compatibility. Even if there is a slight deviation between the body bolt hole and the mounting through hole 7, there is no need to move the entire cable protection box body 1 and avoid affecting the pre-fixed snap-fit ​​part 6. The mounting bolt can be inserted simply by aligning it with the body hole along the length of the waist-shaped hole, which greatly reduces the alignment difficulty in narrow spaces, reduces assembly rework rate, and improves assembly efficiency.

[0049] As a preferred embodiment of this utility model, see [link to relevant documentation]. Figure 1 As shown, a second reinforcing rib 9 is connected between the outer wall of the cable protection box body 1 and the outer wall of the extension 8.

[0050] The second reinforcing rib 9 connects the main body 1 of the cable protection box and the outer wall of the extension 8, which is equivalent to providing an oblique support frame for the extension 8, directly improving the bending strength of the extension 8, avoiding the problems of root bending and top displacement of the extension 8, ensuring that the extension 8 always maintains its design shape and does not affect the fit between the mounting hole 7 and the mounting bolt 11.

[0051] In one embodiment, the present invention discloses a vehicle that includes the vehicle wiring harness protection box structure described in any of the above embodiments.

[0052] The above embodiments are merely preferred embodiments provided to fully illustrate the present utility model, and the protection scope of the present utility model is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present utility model are all within the protection scope of the present utility model.

Claims

1. A vehicle wiring harness protection box structure, comprising a protection box body (1) fixed to the vehicle body, characterized in that: The cable protection box body (1) is provided with a through hole that runs through the front and back direction. Several partitions (2) are connected inside the through hole. The through hole is divided into several channels (3) by the partitions (2). Several protrusions (4) extending along the axial direction of the channel (3) are provided on the inner wall of the channel (3). The protrusions (4) are adapted to the first mounting part or anti-misalignment part on the outer wall of the wire harness connector (10).

2. The vehicle wiring harness protection box structure according to claim 1, characterized in that: The inner wall of the channel (3) is provided with a first reinforcing rib (5) extending in a circumferential direction, and the first reinforcing rib (5) is arranged to intersect with a plurality of the protrusions (4).

3. The vehicle wiring harness protection box structure according to claim 1, characterized in that: The outer side wall of the cable guard box body (1) is provided with a second mounting part that is fixed to the vehicle body.

4. The vehicle wiring harness protection box structure according to claim 3, characterized in that: The second mounting part includes a plurality of snap-fit ​​parts (6) integrally formed with the cable protection box body (1) and located on the outer wall of the cable protection box body (1).

5. The vehicle wiring harness protection box structure according to claim 4, characterized in that: The second mounting part also includes a mounting through hole (7) provided on the side wall of the cable guard box body (1), and the mounting bolt (11) passes through the mounting through hole (7) and is fixedly connected to the vehicle body.

6. The vehicle wiring harness protection box structure according to claim 5, characterized in that: The outer wall of the cable protection box body (1) is provided with an extension (8) at the position corresponding to the mounting through hole (7) to increase the axial length of the mounting through hole (7).

7. The vehicle wiring harness protection box structure according to claim 5, characterized in that: The number of the latching parts (6) is two. The mounting through hole (7) and the two latching parts (6) are arranged on the same side wall of the cable protection box body (1), and the two latching parts (6) are located on both sides of the mounting through hole (7).

8. The vehicle wiring harness protection box structure according to claim 5, characterized in that: The mounting hole (7) is a waist-shaped hole.

9. The vehicle wiring harness protection box structure according to claim 6, characterized in that: A second reinforcing rib (9) is connected between the outer wall of the main body (1) of the cable box and the outer wall of the extension (8).

10. A vehicle, characterized in that: Includes the vehicle wiring harness protection box structure as described in any one of claims 1 to 9.

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