Fatigue-resistant finished automobile low-voltage wire harness

Abstract

The invention provides an anti-fatigue finished automobile low-voltage wire harness which comprises a reinforcing structure, the reinforcing structure comprises an elastic pipe, a connecting strip is arranged on the outer wall of the elastic pipe, a side ring is arranged at one end of the connecting strip, positioning shafts are arranged on the two sides of the side ring, and positioning grooves are formed in the inner sides of the positioning shafts. The wire harness structure is reasonable in design, the wire harness structure can be clamped and connected through the arranged reinforcing structure, different wire harness structures can be fixed through the multiple arranged side edge rings, the wire harness structures are prevented from being mutually entangled together, and meanwhile when the wire harness structures are bent, the wire harness structures can be bent, so that the wire harness structures can be bent conveniently. The elastic pipe can bend and drive the wire harness structure to bend in a following mode, the radian of the wire harness structure in the bending process is reduced, and damage to the wire harness structure in the bending process is avoided.

Description

Technical Field

[0001] This invention mainly relates to the field of low-voltage wiring harnesses, and specifically to a fatigue-resistant low-voltage wiring harness for vehicles. Background Technology

[0002] In modern automotive electrical systems, low-voltage wiring harnesses are a core component for power distribution and signal transmission, and their rationality and reliability directly affect the vehicle's stability and safety. With the continuous improvement of automotive electronics and intelligence, the number of low-voltage electrical appliances inside the vehicle has increased significantly, and the corresponding number of low-voltage wiring harnesses has also increased. These harnesses are typically concentrated in limited spaces such as the engine compartment, under the dashboard, and chassis, and are arranged by bundling or fixing.

[0003] Currently, common low-voltage wiring harnesses in vehicles are often laid out using parallel bundling or centralized routing. However, during actual assembly and use, due to the large number of harnesses, complex routing, and lack of effective spatial separation and positioning structures, different groups of low-voltage harnesses are prone to tangling, crossing, or even being squeezed together due to vibration, assembly errors, or long-term use. This entanglement not only leads to chaotic harness arrangement but also causes significant inconvenience for subsequent maintenance, replacement, or upgrades of specific low-voltage harnesses. Maintenance often requires untying the entire bundle of cables, or even disassembling adjacent harnesses or components, greatly increasing maintenance time and costs.

[0004] It should be noted that the above content falls within the scope of the inventor's technical knowledge. Due to the vast and complex nature of the technical content in this field, the above content of this application does not necessarily constitute prior art. Summary of the Invention

[0005] 1. The technical problem that the invention aims to solve: This invention provides a fatigue-resistant low-voltage wiring harness for vehicles to solve the technical problems existing in the background art.

[0006] 2. Technical Solution: To achieve the above objectives, the technical solution provided by the present invention is as follows: a fatigue-resistant low-voltage wiring harness for a vehicle, comprising a protective sleeve structure, a reinforcing structure disposed inside the protective sleeve structure, a wiring harness structure disposed on the outer wall of the reinforcing structure, and the wiring harness structure disposed between the protective sleeve structure and the reinforcing structure; The reinforcing structure includes an elastic tube, the outer wall of which is provided with a connecting strip, one end of which is provided with a side ring, and both sides of which are provided with positioning shafts, and the inner side of the positioning shaft is provided with a positioning groove.

[0007] Furthermore, the protective sleeve structure includes a bracket and a protective sleeve body. The bracket has mounting strips at both ends on one side, and mounting holes are provided at both ends of the mounting strips. The number of brackets is set to multiple, and a flexible strip is provided between two brackets.

[0008] Furthermore, the outer wall of the bracket is provided with positioning rings, and the number of positioning rings is set to multiple, with the multiple positioning rings arranged in a ring array on the outer wall of the bracket.

[0009] Furthermore, the protective sleeve body is slidably connected to the inner wall of the positioning ring, and sealing rings are provided at both ends of the protective sleeve body. Multiple placement holes are opened inside the sealing rings, and two placement holes form a group.

[0010] Furthermore, an inner fitting ring is provided in the middle of the inner wall of the sealing ring, and an outer fitting ring is provided on the outer side of the inner wall of the sealing ring, with the outer wall of the outer fitting ring fitting to the inner wall of the protective sleeve body.

[0011] Furthermore, the number of connecting strips is set to multiple, and the multiple connecting strips are arranged in a ring array on the outer wall of the elastic tube.

[0012] Furthermore, the side ring is arc-shaped, and the outer wall of the side ring fits against the inner wall of the protective sleeve body.

[0013] Furthermore, the wire harness structure includes a wire disposed on the inner wall of the positioning groove, and the wire is engaged with the positioning groove.

[0014] Furthermore, a connector is provided at both ends between the two wires, and a socket is provided at the top of the connector.

[0015] 3. Beneficial effects: Compared with the prior art, the technical solution provided by this invention has the following advantages: The present invention uses a reinforced structure to engage and connect the wire harness structure. Multiple side rings can fix different wire harness structures, preventing them from getting tangled together. At the same time, when the wire harness structure is bent, the elastic tube will bend and drive the wire harness structure to bend accordingly, reducing the curvature of the wire harness structure during the bending process and preventing damage to the wire harness structure during bending. During the use of the wire harness structure, a certain amount of heat is generated. External gas enters the interior of the elastic tube through the inner fitting ring. The gas flows on the inner wall of the elastic tube, and the heat generated by the wire harness structure is transferred to its interior through the elastic tube. The heat is carried away during the air circulation, preventing heat accumulation. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the protective sleeve structure of the present invention; Figure 3 This is a three-dimensional cross-sectional view of the protective sleeve structure of the present invention; Figure 4 This is a three-dimensional structural diagram of the reinforcement structure of the present invention; Figure 5 This is a three-dimensional structural diagram of the wire harness structure of the present invention.

[0017] Figure label: 1. Protective sleeve structure; 101. Bracket; 102. Mounting strip; 103. Mounting hole; 104. Flexible strip; 105. Positioning ring; 106. Protective sleeve body; 107. Sealing ring; 108. Inner fitting ring; 109. Outer fitting ring; 110. Placement hole; 2. Reinforcing structure; 201. Elastic tube; 202. Connecting strip; 203. Side ring; 204. Positioning shaft; 205. Positioning groove; 3. Wiring harness structure; 301. Wire; 302. Connecting plug; 303. Insertion hole. Detailed Implementation

[0018] To facilitate understanding of the present invention, a more complete description of the invention will be given below with reference to the accompanying drawings, which illustrate several embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the invention will be more thorough and complete.

[0019] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "page," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0021] In this invention, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," "provided with," and "located in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0022] Example

[0023] See attached document Figure 1-5 A fatigue-resistant low-voltage wiring harness for a vehicle includes a protective sleeve structure 1, a reinforcing structure 2 is provided inside the protective sleeve structure 1, a wiring harness structure 3 is provided on the outer wall of the reinforcing structure 2, and the wiring harness structure 3 is disposed between the protective sleeve structure 1 and the reinforcing structure 2. The reinforcement structure 2 includes an elastic tube 201. A connecting strip 202 is provided on the outer wall of the elastic tube 201. A side ring 203 is provided at one end of the connecting strip 202. Positioning shafts 204 are provided on both sides of the side ring 203. Positioning grooves 205 are provided on the inner side of the positioning shafts 204. The elastic tube 201 is made of elastic material. The positioning grooves 205 at both ends of the side ring 203 on the outer wall of the elastic tube 201 can fix the wire harness structure 3. Two or more wire harness bodies inside a set of wire harness structures 3 can be installed into the positioning grooves 205 at different positions at both ends of a set of side rings 203 respectively.

[0024] Furthermore, the protective sleeve structure 1 includes a bracket 101 and a protective sleeve body 106. Mounting strips 102 are provided at both ends of one side of the bracket 101, and mounting holes 103 are provided at both ends of the mounting strips 102. Multiple brackets 101 are provided, and a flexible strip 104 is provided between two brackets 101. Positioning rings 105 are provided on the outer wall of each bracket 101, and multiple positioning rings 105 are arranged in a circular array on the outer wall of the bracket 101. The protective sleeve body 106 is slidably connected to the inner wall of the positioning rings 105. Sealing rings 107 are provided at both ends of the protective sleeve body 106. Multiple placement holes 110 are provided inside the sealing rings 107, with two placement holes 110 forming a group. An inner fitting ring 108 is provided in the middle of the inner wall of the sealing ring 107, and an outer fitting ring 108 is provided on the outer side of the inner wall of the sealing ring 107. 09. The outer wall of the outer fitting ring 109 is fitted to the inner wall of the protective sleeve body 106. The number of connecting strips 202 is set to multiple, and the multiple connecting strips 202 are arranged in a ring on the outer wall of the elastic tube 201. The side ring 203 is set to be arc-shaped, and the outer wall of the side ring 203 is fitted to the inner wall of the protective sleeve body 106. After the wire harness structure 3 is installed on the outer wall of the reinforcing structure 2, the wire 301 is passed through a placement hole 110. Then the protective sleeve body 106 is put on the outer wall of the reinforcing structure 2 so that the protective sleeve body 106 wraps the wire 301. Then the outer wall of the protective sleeve body 106 enters between the inner fitting ring 108 and the outer fitting ring 109, and the inner fitting ring 108, the outer fitting ring 109 and the protective sleeve body 106 are sealed with glue. Then another sealing ring 107 is installed on the other end of the protective sleeve body 106 to achieve the sealing of the wire 301. After the protective sleeve body 106 is wrapped around the outer wall of the reinforcing structure 2, the protective sleeve body 106 is installed inside the positioning ring 105. The protective sleeve body 106 and the positioning ring 105 are interlocked. Then, depending on the installation position and length of the protective sleeve body 106, the positioning ring 105 is installed at different positions on the outside of the protective sleeve body 106. When the wire harness structure 3 is bent and installed, bolts or suction cups can be installed inside the mounting hole 103. Then, the wire harness structure 3 is bent, which causes the reinforcing structure 2 to bend, and the protective sleeve body 106 bends accordingly, causing the flexible strip 104 to bend as well. The flexible strip 104 will generate a certain reverse force to prevent the wire harness structure 3 from bending at too large an angle.

[0025] Furthermore, the wiring harness structure 3 includes a wire 301, which is disposed on the inner wall of the positioning groove 205 and is engaged with the positioning groove 205. A connector 302 is provided at both ends between the two wires 301. The connector 302 has a socket 303 at its top. After the wire 301 is installed between the protective sleeve structure 1 and the reinforcing structure 2, the connector 302 is installed at both ends of the wire 301 and is electrically connected to the components inside the vehicle.

[0026] Core assembly: Multiple wires 301 are respectively inserted into the positioning grooves 205 of the positioning shafts 204 on both sides of the different side rings 203 on the reinforcing structure 2. The elasticity of the elastic tube 201 and the connecting strip 202 allows for moderate opening when the wires 301 are inserted, achieving a tight and neat arrangement.

[0027] Encapsulation and protection: The reinforcing structure 2 with the assembled wire 301 is inserted into the protective sleeve body 106. The two ends of the wire 301 are passed through the placement holes 110 of the sealing ring 107 respectively. Then, the sealing ring 107 is put on both ends of the protective sleeve body 106 and sealed to form a closed or semi-closed protective channel.

[0028] Overall fixing: The encapsulated wire harness segment is inserted into the positioning rings 105 on multiple brackets 101 through the outer wall of the protective sleeve body 106. According to the wiring path requirements, the mounting point is selected on the vehicle body, and it is fixed by bolts or clips through the mounting strips 102 and mounting holes 103 on the brackets 101.

[0029] Bending and Protection: When the wiring harness needs to move with vehicle components or bypass obstacles, external force is first applied to the protective sleeve structure 1. The internal elastic tube 201 bends due to its elasticity, and the side ring 203 and positioning groove 205 guide and constrain the wire 301 to bend synchronously and with the same arc as the elastic tube 201. The flexible strip 104 and the elastic tube 201 work together to ensure a smooth bend and prevent the wire 301 from making sharp-angle bends.

[0030] Heat dissipation: The heat generated by the wire 301 during operation is transferred to the elastic tube 201. If a ventilation structure is designed, cooler external air can flow into the internal cavity of the elastic tube 201 and carry away the heat from the tube wall through convection, thus achieving auxiliary heat dissipation.

[0031] Anti-entanglement: Since each or each group of wires 301 is separated and fixed by an independent side ring 203 and positioning groove 205, mutual friction and entanglement between different wires 301 are fundamentally avoided when the vehicle vibrates.

[0032] Wire 301 consists of a conductor and an insulating layer: Conductor: High-purity annealed copper wire, ensuring excellent conductivity and flexibility.

[0033] Insulation layer: made of cross-linked polyolefin or thermoplastic elastomer. These materials have excellent heat resistance, aging resistance, and chemical corrosion resistance, while being flexible and resistant to repeated bending fatigue, fully meeting the environmental requirements of automotive low-voltage wiring harnesses.

[0034] The protective cover body 106 is mainly made of thermoplastic elastomer or modified polyvinyl chloride.

[0035] TPE combines the elasticity of rubber with the strength of plastics, offering wear resistance, oil resistance, flame retardancy, and good flexibility, effectively protecting the internal structure and adapting to bending. Modified PVC, with its lower cost, also possesses good wear resistance, flame retardancy, and environmental resistance, making it a commonly used material for automotive wiring harness protection tubing.

[0036] The elastic tube 201 is mainly made of silicone rubber or thermoplastic polyurethane elastomer.

[0037] Silicone rubber: It possesses excellent elasticity, resistance to high and low temperatures, fatigue resistance, and flexibility. Its stable physical properties make it an ideal choice as a core component for guiding bending and heat dissipation ducts.

[0038] TPU: It has excellent mechanical strength, abrasion resistance, and flexural fatigue resistance, good elasticity, and better processing performance than silicone rubber. Choosing a TPU with appropriate hardness can effectively balance support and flexibility.

[0039] The above-described embodiments are merely illustrative of certain implementations of the present invention, and are described in a relatively specific and detailed manner. However, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements are all within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A fatigue-resistant low-voltage wiring harness for vehicles, characterized in that: include A protective sleeve structure (1) is provided inside the protective sleeve structure (1) and a reinforcing structure (2) is provided on the outer wall of the reinforcing structure (2) and a wire harness structure (3) is provided between the protective sleeve structure (1) and the reinforcing structure (2); The reinforcement structure (2) includes an elastic tube (201), the outer wall of which is provided with a connecting strip (202), one end of which is provided with a side ring (203), and the two sides of the side ring (203) are provided with positioning shafts (204), and the inner side of the positioning shaft (204) is provided with a positioning groove (205).

2. The fatigue-resistant low-voltage wiring harness for vehicles according to claim 1, characterized in that: The protective sleeve structure (1) includes a bracket (101) and a protective sleeve body (106). The bracket (101) has mounting strips (102) at both ends on one side. The mounting strips (102) have mounting holes (103) at both ends. The number of brackets (101) is set to multiple. A flexible strip (104) is provided between two brackets (101).

3. The fatigue-resistant low-voltage wiring harness for vehicles according to claim 2, characterized in that: The outer wall of the bracket (101) is provided with positioning rings (105), and the number of positioning rings (105) is set to multiple, and the multiple positioning rings (105) are arranged in a ring array on the outer wall of the bracket (101).

4. The fatigue-resistant low-voltage wiring harness for vehicles according to claim 2, characterized in that: The protective sleeve body (106) is slidably connected to the inner wall of the positioning ring (105). The two ends of the protective sleeve body (106) are provided with sealing rings (107). The sealing rings (107) have multiple placement holes (110) inside, and two placement holes (110) form a group.

5. The fatigue-resistant low-voltage wiring harness for vehicles according to claim 4, characterized in that: An inner fitting ring (108) is provided in the middle of the inner wall of the sealing ring (107), and an outer fitting ring (109) is provided on the outer side of the inner wall of the sealing ring (107). The outer wall of the outer fitting ring (109) is fitted with the inner wall of the protective sleeve body (106).

6. The fatigue-resistant low-voltage wiring harness for vehicles according to claim 1, characterized in that: The number of the connecting strips (202) is set to multiple, and the multiple connecting strips (202) are arranged in a ring on the outer wall of the elastic tube (201).

7. The fatigue-resistant low-voltage wiring harness for vehicles according to claim 1, characterized in that: The side ring (203) is arc-shaped, and the outer wall of the side ring (203) fits against the inner wall of the protective sleeve body (106).

8. The fatigue-resistant low-voltage wiring harness for vehicles according to claim 1, characterized in that: The wire harness structure (3) includes a wire (301), which is disposed on the inner wall of the positioning groove (205) and is engaged with the positioning groove (205).

9. A fatigue-resistant low-voltage wiring harness for vehicles according to claim 8, characterized in that: A connector (302) is provided at both ends between the two wires (301), and a socket (303) is provided at the top of the connector (302).

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