Wire harness protection device, and vehicle

Abstract

The present application relates to the technical field of general vehicles, and in particular to a wire harness protection device, and a vehicle. The wire harness protection device of the present application comprises a vehicle-body-side wiring tube configured to be fixed on a vehicle body and a vehicle-door-side wiring tube configured to be fixed on a vehicle door, wherein inner cavities of the vehicle-body-side wiring tube and the vehicle-door-side wiring tube jointly form a wiring channel; one of the vehicle-body-side wiring tube and the vehicle-door-side wiring tube extends to the other tube through a hinge pivot position between the vehicle body and the vehicle door, and has a sliding insertion-fit section that is in sliding insertion-fit with the other tube, such that during the process of opening and closing the vehicle door, the sliding insertion-fit section slides relative to the other tube and remains in an insertion-fit relationship therewith; and a tube section passing through the hinge pivot position between the vehicle body and the vehicle door is a flexible deformable section, so as to bend and deform by means of flexibility when the vehicle door is opened, and recover from the deformation by means of flexibility when the door is closed. The device of the present application can realize the bending and deformation of the wiring tube by means of the flexible deformable section, and recover from deformation in an expected direction under the action of the flexibility.

Description

A wire harness protection device and vehicle Technical Field

[0001] This application relates to the field of general vehicle technology, and specifically to a wiring harness protection device and a vehicle. Background Technology

[0002] In the field of passenger cars, buses and other vehicles, wiring harnesses are a core component of the electrical system, mainly used for the transmission of power or signals between components such as the body, instruments and engine. With the continuous innovation of new energy vehicle technology, the requirements for the layout and protection of wiring harnesses are also getting higher and higher, especially the protection of wiring harnesses between the body and doors is crucial.

[0003] The wiring harness between the vehicle body and the doors typically connects various electronic devices and sensors on both the body and the doors. Because the wiring harness between the door and the body is frequently moved during door opening and closing, it is susceptible to wear and other interference. Therefore, protection is needed to ensure the wiring harness is protected from physical damage or corrosion, thereby extending its lifespan. In existing technology, various forms of protective tubing are commonly used to protect the wiring harness between the body and the doors. This tubing serves two purposes: firstly, it prevents wear and tear or contamination of the wiring harness; secondly, it accommodates the need for reciprocating movement along the door or body during door opening and closing, adapting to changes in the relative length of the protective tubing exposed between the body and the door.

[0004] Chinese utility model patent document with authorization announcement number CN216424315U and authorization announcement date of 2022 / 05 / 03 discloses a rubber part for automobiles. The rubber part for automobiles includes a cable protection tube and a body end mounting seat and a door end mounting seat that are fixedly connected to and communicate with both ends of the cable protection tube. The body end mounting seat includes a body end mounting head and a body end guide tube that are connected to each other. The body end guide tube is connected to the cable protection tube. The door end mounting seat includes a door end mounting plate and a door end guide tube that are connected to each other. The door end mounting plate is connected to the cable protection tube. The cable protection tube and the door end guide tube adopt a corrugated tube design.

[0005] The automotive rubber components, with their corrugated tubing and door-end guide tubes, protect the wiring harness. The corrugated tubing's ability to freely expand, contract, and bend allows the harness to bend at multiple angles when the door is opened and closed. However, precisely because of this flexibility, especially when the door is closed, the direction of retraction is difficult to control. It may not retract to the intended space as expected, resulting in the tubing being exposed inside or outside the vehicle after the door is closed.

[0006] Chinese utility model patent document with authorization announcement number CN220009679U and authorization announcement date of 2023 / 11 / 14 discloses a wire harness guide rubber component. The wire harness guide rubber component includes a guide tube, a connecting tube connected to one end of the guide tube, and a connector connected to the other end of the guide tube. The central axis of the connecting tube is at a predetermined angle to the central axis of the first connector. At least one guide rib is provided on the outer wall of the guide tube and at least a portion of the connecting tube to avoid unexpected deformation of the connecting tube. The connecting tube is a corrugated tube, and the guide rib is arranged to avoid the bending portion of the corrugated tube.

[0007] While the guide rubber component for the wiring harness can suppress unintended deformation of the harness during bending through the guide ribs, the connecting tube in the middle is still in the form of a corrugated tube. Therefore, the corrugated tube may still be exposed when the door is closed. This is especially true when it is used in bus safety doors with thin-panel door structures. Because the door is thin, the space reserved between the door and the vehicle body to accommodate the corrugated tube is small. Therefore, the corrugated tube is more likely to fail to retract in the expected direction when the safety door is closed. This results in the corrugated tube being squeezed and exposed inside the vehicle when the door is closed, leading to an unsightly interior and safety hazard when the bus safety door is kept closed. Summary of the Invention

[0008] The purpose of this application is to provide a wire harness protection device to solve the problem in the prior art where corrugated pipes are used as protective pipes, resulting in the corrugated pipes not being able to recover their deformation in the expected direction after relative deformation.

[0009] The purpose of this application is also to provide a vehicle that solves the problem in the prior art where the use of corrugated pipes as protective pipes results in the corrugated pipes not being able to recover their deformation in the expected direction after relative deformation.

[0010] To achieve the above objectives, the wire harness protection device of this application adopts the following technical solution.

[0011] A wiring harness protection device includes a body-side wiring conduit for fixing to a vehicle body and a door-side wiring conduit for fixing to a vehicle door; wherein the inner cavities of the body-side wiring conduit and the door-side wiring conduit together form a wiring channel; one of the wiring conduits of the body-side and door-side conduits extends through the hinged flip position of the vehicle body and the door to the other wiring conduit of the body-side and door-side conduits, and has a sliding sleeve engagement section that engages with the sliding sleeve of the other wiring conduit, so that during the opening and closing of the vehicle door, the sliding sleeve engagement section allows the conduit to slide against the other wiring conduit while maintaining the sleeve engagement relationship; the section of the conduit passing through the hinged flip position of the vehicle body and the door is a ductile deformation section, which bends and deforms ductilely when the door is opened, and recovers its deformation ductilely when the door is closed.

[0012] Furthermore, the outer diameter of the vehicle body side conduit is smaller than the inner diameter of the door side conduit, and the sliding sleeve mating section is located on the vehicle body side conduit and extends into the door side conduit to mate with the sliding sleeve of the door side conduit.

[0013] Furthermore, the end of the conduit into which another conduit is slidably inserted is provided with a protective lip to prevent the inserted conduit from rubbing against the vehicle body or door during deformation and sliding in and out.

[0014] Furthermore, the ends of the slidably inserted conduits in the vehicle body side conduits and door side conduits are provided with protective lips, and protective sleeves are fitted over the ends of the slidably inserted conduits in the vehicle body side conduits and door side conduits, with the protective lips located at the ends of the protective sleeves.

[0015] Furthermore, the protective lip is located in front of the end of the slidably inserted conduit in the vehicle body side conduit and the door side conduit, and is closer to the inserted conduit in the vehicle body side conduit and the door side conduit.

[0016] Furthermore, both the body-side wiring conduit and the door-side wiring conduit are made of plastic.

[0017] Furthermore, the wiring conduit on the side of the vehicle body or the wiring conduit on the side of the door, which includes a flexible deformation section, is made of plastic.

[0018] Furthermore, the plastic conduit is either PU or PA tubing.

[0019] Furthermore, the outer diameter of the vehicle body side conduit is larger than the inner diameter of the door side conduit, and the sliding sleeve mating section is located on the door side conduit and extends into the vehicle body side conduit to mate with the sliding sleeve of the vehicle body side conduit.

[0020] Furthermore, there is a gap between the sliding sleeve mating section and the corresponding sliding sleeve.

[0021] Furthermore, when the door is closed, the ductile deformation segment is located between the vehicle frame and the door frame.

[0022] Beneficial Effects: The wire harness protection device of this application is a pioneering invention. The wire harness protection device of this application includes a vehicle body side through-tube for fixing to the vehicle body and a vehicle door side through-tube for fixing to the vehicle door. The inner cavities of both form a wire passage for the wire harness to pass through, thus achieving the protection of the wire harness. Furthermore, the two through-tubes slide and insert into each other. A flexible deformation section on one of the through-tubes allows for deformation bending when the vehicle door is opened. When the vehicle door is closed, the flexibility of the flexible deformation section allows it to recover its deformation in the direction it was deformed when the door was opened. This achieves the goal of ensuring that when one through-tube slides and inserts into the other through-tube, it recovers its deformation in the expected direction after deformation, thereby improving the stability and reliability of the wire harness protection device.

[0023] To achieve the above objectives, the vehicle of this application adopts the following technical solution.

[0024] A vehicle includes a vehicle body, a door, and a wiring harness for supplying power between the two. A wiring harness protection device is provided between the vehicle body and the door to allow the wiring harness to pass through. The wiring harness protection device adopts the same technical solution as the wiring harness protection device described above.

[0025] Beneficial Effects: The vehicle described in this application is a pioneering invention. The vehicle includes a vehicle body, a door, and a wiring harness for power supply between the two. A wiring harness protection device, as described above, is provided between the vehicle body and the door to allow the wiring harness to pass through. Through the sliding engagement of two conduits within the wiring harness protection device, and relying on a flexible deformation section on one of the conduits, the door can bend when opened. When the door is closed, the flexibility of the flexible deformation section allows the conduit to recover its deformation in the direction it was in when the door was opened. This achieves the goal of ensuring that when one conduit slides within the other conduit, it recovers its deformation in the expected direction after deformation, thereby improving the stability and reliability of the wiring harness protection device. Attached Figure Description

[0026] Figure 1 is a schematic diagram of an embodiment of the wire harness protection tube of this application, showing the state of the wire harness tube passing through the door side in two situations: when the door is open and when it is closed.

[0027] In the diagram: 1. Car body side cable conduit; 2. Car door side cable conduit; 3. Sliding sleeve mating section; 4. Flexible deformation section; 5. Car door; 6. Protective lip; 7. Protective sleeve; 8. Cable clip; 9. Cable tie. Detailed Implementation

[0028] The features and performance of this application will be further described in detail below with reference to the embodiments.

[0029] An embodiment of the wire harness protection device of this application is as follows:

[0030] The wiring harness protection device of this application, through the cooperation of two sliding sleeves of the conduit, can not only protect the wiring harness, but also bend when the door is opened by the deformation of the flexible deformation section of one of the conduits, and recover its deformation by its own flexibility when the door is closed.

[0031] Based on the above inventive concept, as a basic solution as shown in Figure 1, the wiring harness protection device of this application includes a vehicle body side wiring conduit 1 for fixing to the vehicle body and a door side wiring conduit 2 for fixing to the door 5. The inner cavities of both together form a wiring channel for the wiring harness to pass through. Therefore, when the door 5 is opened and closed, the wiring harness can move between the door 5 and the vehicle body. Both the vehicle body side wiring conduit 1 and the door side wiring conduit 2 can protect the wiring harness from external interference, thereby extending the service life of the wiring harness. One of the vehicle body side wiring conduit 1 and the door side wiring conduit 2 extends to the other through the hinged flip position of the vehicle body and the door 5, and has a sliding sleeve mating section 3 that mates with another sliding sleeve. A certain gap needs to be left between the two to ensure that the vehicle body side wiring conduit 1 and the door side wiring conduit 2 slide smoothly without jamming during the opening and closing of the door 5. The sliding sleeve mating section 3 slides and maintains a mating relationship with another conduit, meaning that the sliding sleeve mating section 3 inside the other conduit should be slightly longer to maintain the mating relationship. This prevents the conduit from sliding out when it slides back and forth inside the other conduit during the opening and closing of the door 5. The section passing through the hinged and flipped position of the car body and the door 5 is the tough deformation section 4. It can bend and deform by its toughness when the door 5 is opened, and recover its deformation by its toughness when the door 5 is closed. That is, the conduit with this tough deformation section 4 can recover along the path when the door 5 is opened when it is closed. The design of the tough deformation section 4 makes the conduit less prone to damage when subjected to external force, that is, when the conduit inserted into the other conduit is opened and closed during the flipping of the door 5. This improves the durability and reliability of the wire harness protection device and the wire harness, and extends its service life.

[0032] In another embodiment, the wire harness protection device can also be applied to other structures that need to be flipped open and closed, such as robotic arms, automated equipment, etc., where wire harnesses are connected and hinged. By having two wire tubes slide against each other and maintain a sleeve-fitting relationship, and under the action of the ductile deformation section 4, the wire harness can avoid wear and other phenomena such as inability to rotate smoothly during the reciprocating opening and closing motion.

[0033] In another embodiment, the outer diameter of the vehicle body side wiring tube 1 is larger than the inner diameter of the door side wiring tube 2, so that the door side wiring tube 2 passes through the hinged flip position of the vehicle body and the door 5 and extends to the vehicle body side wiring tube 1, and extends into the vehicle body side wiring tube 1 to cooperate with its sliding sleeve.

[0034] In a preferred embodiment, the outer diameter of the vehicle body side through-tube 1 is smaller than the inner diameter of the door side through-tube 2. The sliding sleeve mating section 3 is located on the vehicle body side through-tube 1 and extends into the door side through-tube 2 to engage with its sliding sleeve. When the door 5 is opened and closed, it is more conducive to driving the door side through-tube 2 to rotate and open, and further facilitates the sliding sleeve mating of the vehicle body side through-tube 1 within the door side through-tube 2.

[0035] In a preferred embodiment, the end of the conduit into which another conduit is slidably inserted is provided with a protective lip 6 to prevent the inserted conduit from rubbing against the vehicle body or door 5 during deformation and sliding in and out. When the vehicle body side conduit 1 extends into the door side conduit 2 and engages with the sliding sleeve of the door side conduit 2, a protective lip 6 is provided at the end of the door side conduit 2. The main function of the protective lip 6 is to prevent the vehicle body side conduit 1 from directly contacting the door 5 body during deformation and sliding in and out of the door side conduit 2, thereby reducing rubbing and wear. The protective lip 6 design can significantly extend the service life of the two conduits and reduce the cost incurred due to frequent conduit replacements. The protective lip 6 is typically made of elastic materials, such as rubber or polyurethane, which have good elasticity and sealing properties, thereby reducing noise and vibration generated by the vehicle side conduit during sliding insertion. Furthermore, when the vehicle body experiences bumps or collisions, the protective lip 6 can also act as a buffer to prevent collisions between the door side conduit 2 and the vehicle body side conduit 1, thus improving the operational stability of the device. In other embodiments, when the door side conduit 2 extends into the vehicle body side conduit 1 and engages with its sliding sleeve, the protective lip 6 can be positioned at the end of the door side conduit 2.

[0036] In a preferred embodiment, a protective sleeve 7 is fitted onto the end of the conduit into which another conduit is slidably inserted. The protective lip 6 is located at the end of the protective sleeve 7. Adding the protective sleeve 7 to the end of the conduit facilitates the replacement of the protective sleeve 7 and the protective lip 6 after prolonged use and wear, thereby extending the service life of the conduit and reducing replacement costs. In other embodiments, the protective lip 6 and the conduit into which the other conduit is slidably inserted can be designed as an integral part, which will not affect the protective lip's function of protecting the conduit from wear.

[0037] In a preferred embodiment, the protective lip 6 is located on the front side of the end of the wiring conduit and closer to another wiring conduit, that is, at the hinge position between the door 5 and the vehicle body. The protective lip 6 can be designed to be installed on the side of the door 5 or the vehicle body, serving as a decorative element to prevent the wiring harness protective tube from being worn against the door frame or the vehicle body frame, while also having a certain decorative and aesthetic effect.

[0038] As a preferred embodiment, both conduits are made of plastic. Plastic conduits are characterized by their light weight and low noise, which helps improve the working environment, reduce noise pollution, and reduce manual labor intensity during installation. During the sliding fit between the two conduits, frictional resistance is reduced, thereby improving the flexibility and smoothness of the sliding fit. Plastic conduits typically have good wear resistance and toughness, reducing wear during reciprocating movement and adapting to frequent deformation, thus extending their service life. Plastic also has strong corrosion resistance, maintaining stable performance in corrosive environments such as acids and alkalis. This characteristic makes plastic conduits suitable for various complex application environments, especially in industries such as chemical and pharmaceutical manufacturing, meeting the high requirements for piping materials. Furthermore, plastic has relatively low production costs and is easy to process and mold.

[0039] As another preferred embodiment, the conduit containing the flexible deformation section 4 is a plastic conduit. That is, the other conduit can be a plastic conduit or a conduit made of other materials. Designing the conduit containing the flexible deformation section 4 as a plastic conduit can meet the requirements of the flexible deformation section 4 and can also maintain a relatively low noise state when sliding with the other conduit.

[0040] In a preferred embodiment, the plastic conduit is a PU (polyurethane) or PA (polyethylene) conduit. Polyurethane (PU), as a type of plastic, possesses excellent flexibility, allowing the first conduit to better adapt to deformation during reciprocating movement within the second conduit, reducing damage caused by friction. PU plastic also exhibits good wear resistance, maintaining a longer service life during the reciprocating movement of the first conduit, thereby reducing replacement frequency and costs. Similarly, nylon (PA) also possesses good wear resistance, corrosion resistance, and self-lubricating properties. In other embodiments, other plastic conduits such as polyethylene (PE) or polytetrafluoroethylene (PTFE) conduits can also be used.

[0041] The embodiment of the vehicle in this application is as follows:

[0042] A vehicle includes a vehicle body, a door 5, and a wiring harness for supplying power between the two. A wiring harness protection device is provided between the vehicle body and the door 5 to allow the wiring harness to pass through. An embodiment of the wiring harness protection device has been described above and will not be repeated here.

[0043] In a preferred embodiment, the two conduits are fixed to the same horizontal level on the vehicle body or door 5 using cable clips 8 or cable ties 9. This same height design ensures smooth, unobstructed sliding contact between the two conduits. Furthermore, when the door 5 is closed, the distance between the vehicle frame and the door frame is minimized, resulting in the conduit's flexible deformation section 4 being confined solely between them, minimizing external exposure and achieving a concealed function. Cable clips 8 or cable ties 9 are used to secure the conduits to the door 5 or vehicle body, preventing loosening or damage due to vibration or impact during driving. The cable clips 8 and cable ties 9 have simple structures and low procurement costs, thus reducing overall costs. Moreover, the installation process is simple and quick, reducing installation difficulty, saving time, and improving work efficiency. The cable clip 8 can be a rubber cable clip. Rubber has a certain degree of elasticity and cushioning properties, which can reduce wear between the conduit and the vehicle body or door 5, thereby extending the service life of the conduit. Additionally, the cable tie 9 can be a threaded cable tie. Threaded cable ties adjust their tightness by rotating the threads, thus offering high adjustability. Disassembly of threaded cable ties is also simple and quick; simply rotate the threads in the opposite direction to easily remove them. This easy-to-remove characteristic allows for convenient and easy removal when replacing or repairing the wire harness protective tube, and it also supports reuse, thereby reducing costs. In other embodiments, a snap-fit ​​connection can also be used to fix the conduit. Snap-fit ​​connections also have advantages such as easy installation and disassembly, and high connection strength. Furthermore, clamps or adhesive bonding can also be used as connection methods.

[0044] In addition, when the above-mentioned cable clips 8 or cable ties 9 fix two conduits respectively, at least two can be set, and at least one can be set at the beginning and end of the fixing part of the corresponding conduit to improve the stability and reliability of the connection. The redundant design of at least two can improve the overall flexibility, that is, if one of them fails or becomes loose, the others can still continue to play a fixing role, providing sufficient replacement time for the faulty cable clips 8 or cable ties 9.

[0045] The installation process of the vehicle according to this utility model is as follows: As shown in Figure 1, the wiring conduit 1 on the side of the vehicle body can be made of PU tubing with a diameter of 8mm, and the wiring conduit 2 on the side of the vehicle door can be made of PU tubing with a diameter of 16mm. The wall thickness of both is 2mm. The wiring harness is arranged inside the side-mounted conduit 1 of the vehicle body. One end of the side-mounted conduit 1 extends through the hinged flip position of the vehicle body and the door 5 to the side-mounted conduit 2 of the other door, and is engaged with the sliding sleeve therewith. The side-mounted conduit 1 has a flexible deformation section 4. The side-mounted conduit 1 is fixedly connected to the vehicle body by a rubber cable clip 8, and the side-mounted conduit 2 is fixed to the door 5 by a threaded cable tie 9. When the door 5 is opened, the side-mounted conduit 2 flips around the hinge with the vehicle body along with the door 5, and the flexible deformation section 4 of the side-mounted conduit 1 bends and deforms. When the door 5 is closed, the flexible deformation section 4 of the side-mounted conduit 1 recovers its deformation due to its own flexibility. After the door 5 is closed, the distance between the vehicle frame and the door frame is the smallest. At this time, the flexible deformation section 4 of the side-mounted conduit 1 is only between the vehicle frame and the door frame, with minimal external exposure, thus achieving the function of concealment.

[0046] The above description is merely a preferred embodiment of this application and is not intended to limit this application. The scope of patent protection of this application shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of this application shall also be included within the scope of protection of this application.

Claims

1. A wire harness protection device, characterized in that, The system includes a body-side cable conduit for fixing to the vehicle body and a door-side cable conduit for fixing to the vehicle door. The inner cavities of the body-side cable conduit and the door-side cable conduit together form a cable passage. One of the cable conduits extends through the hinged flip position of the vehicle body and the door to the other cable conduit, and has a sliding sleeve engagement section that engages with the sliding sleeve of the other cable conduit. This allows the cable conduit to slide relative to the other cable conduit and maintain the sleeve engagement relationship during door opening and closing. The section passing through the hinged flip position of the vehicle body and the door is a ductile deformation section, designed to bend and deform ductilely when the door is opened and to recover its deformation ductilely when the door is closed.

2. The wire harness protection device according to claim 1, characterized in that, The outer diameter of the vehicle body side conduit is smaller than the inner diameter of the door side conduit. The sliding sleeve mating section is located on the vehicle body side conduit and extends into the door side conduit to mate with the sliding sleeve of the door side conduit.

3. The wire harness protection device according to claim 1, characterized in that, The ends of the slidably inserted conduits in the vehicle body side conduit and the vehicle door side conduit are provided with protective lips to prevent the inserted conduits from rubbing against the vehicle body or the vehicle door during deformation and sliding in and out.

4. The wire harness protection device according to claim 3, characterized in that, The ends of the slidably inserted conduits in the vehicle body side conduits and the vehicle door side conduits are fitted with protective sleeves, and the protective lip is provided at the end of the protective sleeve.

5. The wire harness protection device according to any one of claims 3-4, characterized in that, The protective lip is located in front of and closer to the end of the slidably inserted conduit in the vehicle body side conduit and the door side conduit.

6. The wire harness protection device according to any one of claims 1-5, characterized in that, Both the vehicle body side conduit and the door side conduit are plastic conduits.

7. The wire harness protection device according to any one of claims 1-6, characterized in that, The vehicle body side conduit or the door side conduit containing the flexible deformation section is a plastic conduit.

8. The wire harness protection device according to claim 7, characterized in that, The plastic conduit is either a PU tube or a PA tube.

9. The wire harness protection device according to claim 1, characterized in that, The outer diameter of the vehicle body side conduit is larger than the inner diameter of the door side conduit. The sliding sleeve mating section is located on the door side conduit and extends into the vehicle body side conduit to mate with the sliding sleeve of the vehicle body side conduit.

10. The wire harness protection device according to any one of claims 1-9, characterized in that, There is a gap between the sliding sleeve mating section and the corresponding sliding sleeve.

11. The wire harness protection device according to any one of claims 1-10, characterized in that, When the door is closed, the ductile deformation segment is located between the vehicle frame and the door frame.

12. A vehicle, comprising a vehicle body, a door, and a wiring harness for supplying power between the vehicle body and the door, wherein a wiring harness protection device is provided between the vehicle body and the door for the wiring harness to pass through therethrough, characterized in that, The wire harness protection device is the wire harness protection device according to any one of claims 1-11.

13. The vehicle according to claim 12, characterized in that, The vehicle body side cable conduit and the vehicle door side cable conduit are respectively fixed to the same horizontal height of the vehicle body or the vehicle door by cable clips or cable ties.

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