Protective sleeve for wiring harness

Abstract

The utility model discloses a kind of protective sleeve for wiring harness, including pipe body, the pipe body includes wear-resistant inner layer, support middle layer and impact-resistant outer layer, the wear-resistant inner layer, support middle layer and impact-resistant outer layer are by inside to outside using coaxial composite structure, the outer wall of the pipe body is opened with through type notch along axial direction one side, the outer wall of the support middle layer is in along pipe body axial notch end, symmetrically arranged with the buckle of mutual cooperation, the wear-resistant inner layer is in along pipe body and is provided with inner layer protruding piece, the utility model is combined with the double-lock structure of buckle and inner layer protruding piece and support middle layer elastic reset characteristics, realize the automatic locking of notch end stress separation and unloading bite, more convenient than traditional cable tie fixed or cable extension sleeve, in complex bending path, integrated magic tape auxiliary adhesive piece can form axial equal-length redundant protection when buckle failure, without adhesive tape can be closely fitted path, solve the problem that traditional open sleeve cracks need additional tool.

Description

Technical Field

[0001] This utility model mainly relates to the field of wire harness protection equipment technology, specifically a protective sleeve for wire harnesses. Background Technology

[0002] Wire harness protection equipment is a general term for various devices or components used to protect wire harnesses from external environmental factors such as mechanical damage, high temperature, humidity, and corrosion. Its core function is to ensure that the wire harness maintains stable electrical performance and structural integrity in complex usage scenarios, thereby extending the service life of the wire harness.

[0003] Protective sleeves for wire harnesses are an important component of wire harness protection equipment. As tubular protective parts, they form a physical barrier by wrapping or binding around the wire harness, specifically addressing the protection needs of wire harnesses in specific environments. Some existing protective sleeves rely on cable ties for fixation, requiring segmented binding, which is cumbersome. Furthermore, cable ties are prone to aging and breakage over time, leading to sleeve loosening. Others use an "extension-insertion" installation method, requiring the wire harness to be forcibly passed through the entire sleeve. During this process, friction between the wire harness and the inner wall of the sleeve can cause wear on the outer sheath. Installing long wire harnesses also requires multiple people to assist. Additionally, some openable sleeves are either cumbersome to install due to complex designs and locking mechanisms, or have elastic composite structures that crack when bent, requiring additional tape for fixation. Utility Model Content

[0004] This utility model addresses the problem of overly simplistic existing solutions by providing a protective sleeve for wire harnesses. This solution resolves several shortcomings of existing sleeves mentioned in the background, such as reliance on cable ties for secure installation leading to cumbersome installation and easy aging and loosening, wear and tear on the wire harness during "extended insertion" installation requiring multiple assistants, and the inconvenience of either complex snap-fit ​​designs or cracking at the cut surface during bending requiring additional tape for fixation.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0006] A protective sleeve for wire harnesses includes a tube body comprising a wear-resistant inner layer, a support middle layer, and an impact-resistant outer layer. The wear-resistant inner layer, the support middle layer, and the impact-resistant outer layer adopt a coaxial composite structure from the inside to the outside. A through-cut is provided on one side of the outer wall of the tube body along the axial direction. At the end of the cut along the axial direction of the tube body, the outer wall of the support middle layer is symmetrically provided with mutually cooperating buckles. The wear-resistant inner layer is provided with an inner layer protrusion along the tube body. The impact-resistant outer layer is provided with an auxiliary adhesive near the buckles.

[0007] Furthermore, the wear-resistant inner layer, the supporting middle layer, and the impact-resistant outer layer are three layers arranged in concentric circles around the tube axis, and the interfaces of each layer are bonded together by hot melt to form an integrated tube structure.

[0008] Furthermore, the inner wall of the wear-resistant inner layer is smooth, and the outer wall of the impact-resistant outer layer is provided with friction-enhancing components. The friction-enhancing components are rhomboid protrusions and are distributed in a ring around the axis of the tube.

[0009] Furthermore, the buckle includes a first serrated component and a second serrated component, which form an interlocking structure and are distributed in a mirror-symmetrical manner about the axis of the through-cut in the tube.

[0010] Furthermore, the inner protrusion and the first serrated part are located on the same side of the through-cut in the tube body, and the wear-resistant inner layer has a semi-circular groove on the other side of the through-cut that is complementary to the shape of the inner protrusion.

[0011] Furthermore, the auxiliary adhesive component includes a hook and loop fastener that cooperate with each other. The hook and loop fastener are located on both sides of the through-cut opening in the tube body. The axial length of the buckle is consistent with the axial length of the tube body. The axial length of the auxiliary adhesive component is equal to the axial length of the buckle. The outer wall of the impact-resistant outer layer is bonded with a disposable dustproof mold on the outer side of the hook and loop fastener respectively.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. Through the double-locking structure of buckles and inner protrusions, and by utilizing the elastic reset characteristics of the supporting middle layer, the tube body cut end can achieve an automatic locking form from force separation to force release and engagement. This is more convenient than the traditional method of fixing the tube with cable ties or extending the cable into the sleeve.

[0014] 2. Traditional sleeves with open ends often crack at the cut when laid out along curved paths due to bending deformation of the sleeve body. This requires additional tape assistance, which is cumbersome and results in a loose fit. However, this solution creates redundant protection by integrating auxiliary adhesive components on the sleeve body surface. When the buckle and inner protrusion fail due to the bending of the sleeve body, the axially equal-length Velcro surface and hook surface can cover the entire cut through the outer protective mold by their own adhesion. Combined with the rigid and tough composite structure of the impact-resistant outer layer, the sleeve body fits tightly against complex paths, eliminating protective gaps without the need for additional tools.

[0015] 3. The friction-enhancing component can increase the friction force, giving the operator a better grip when applying force to separate the wire harness. After the wire harness is embedded, it automatically resets and locks under the elastic structure of the tube body 1 material. Compared with the traditional protective sleeve installation method, which requires the wire harness to pass through the entire sleeve along the axis, this method is more convenient.

[0016] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 This is a top view of the structure of this utility model;

[0019] Figure 3 This is a schematic diagram showing the distribution of the cuts in the tube body of this utility model;

[0020] Figure 4 This utility model Figure 3 Enlarged schematic diagram of the structure at point A in the middle.

[0021] Numbering on the map:

[0022] 1. Tube body; 2. Wear-resistant inner layer; 3. Supporting middle layer; 4. Impact-resistant outer layer; 5. Buckle; 6. Inner layer protrusions; 7. Friction-enhancing components; 8. Auxiliary adhesive components. Detailed Implementation

[0023] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the utility model more thorough and comprehensive.

[0024] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0025] Please refer to the appendix carefully. Figure 1-4 A protective sleeve for wire harnesses includes a tube body 1. The tube body 1 includes a wear-resistant inner layer 2, a support middle layer 3, and an impact-resistant outer layer 4. The wear-resistant inner layer 2, the support middle layer 3, and the impact-resistant outer layer 4 adopt a coaxial composite structure from the inside to the outside. A through-cut is provided on one side of the outer wall of the tube body 1 along the axial direction. At the end of the axial cut along the tube body 1, the outer wall of the support middle layer 3 is symmetrically provided with mutually cooperating buckles 5. The wear-resistant inner layer 2 is provided with an inner layer protrusion 6 along the tube body 1. The impact-resistant outer layer 4 is provided with an auxiliary adhesive 8 near the buckle 5.

[0026] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, the wear-resistant inner layer 2, the supporting middle layer 3, and the impact-resistant outer layer 4 are three layers arranged in concentric circles around the axis of the tube body 1. The interfaces of each layer are bonded together by hot melt to form an integrated tube body 1 structure.

[0027] Through the above structure, the wear-resistant inner layer 2, the supporting middle layer 3, and the impact-resistant outer layer 4 are distributed in concentric circles and hot-melted together to form an integrated tube structure 1, which has multiple advantages: each layer of material performs its own function. The wear-resistant inner layer 2 reduces wire harness wear with its smooth surface, the supporting middle layer 3 provides cushioning and flexibility for the tube 1 with the flexibility of thermoplastic elastomer, and the impact-resistant outer layer 4 resists external impacts with its rigid and tough composite structure of nylon and glass fiber. While ensuring that the tube 1 is lightweight, its durability, reliability and environmental adaptability are significantly improved.

[0028] In this embodiment, as Figure 1 and Figure 3 As shown, the inner wall of the wear-resistant inner layer 2 is smooth, and the outer wall of the impact-resistant outer layer 4 is provided with friction-enhancing parts 7. The friction-enhancing parts 7 are diamond-shaped protrusions and are distributed in a ring around the axis of the tube body 1.

[0029] Through the above structure, the wear-resistant inner layer 2, as the surface in direct contact with the wire harness, adopts a smooth inner wall structure, which effectively avoids wear on the outer sheath of the wire harness when in contact with it, ensuring the safety of the wire harness for long-term use. The diamond-shaped friction-enhancing parts 7 distributed in a ring on the outer wall of the impact-resistant outer layer 4 increase the contact area and surface roughness, providing a stable point of force for the operator, making the opening and closing operation of the tube 1 more labor-saving and efficient. The impact-resistant outer layer 4 and the friction-enhancing parts 7 are made of nylon (PA6 + glass fiber GF) composite material to form a rigid and tough composite structure, which can flexibly deform with the inner layer, and can suppress plastic deformation during long-term use through the rigid support of glass fiber.

[0030] In this embodiment, as Figure 1 and Figure 3 As shown, the buckle 5 includes a first serrated part and a second serrated part, which form an interlocking structure and are distributed in a mirror symmetrical manner about the axis of the through cut of the tube body 1.

[0031] Through the above structure, the buckle 5 adopts a mirror-symmetrical first and second serrated engagement structure, which corresponds to the through-cut axis of the tube body 1. With the thermoplastic elastomer (TPE) material that is the same as the supporting middle layer 3, during the opening and closing of the tube body 1, the first and second serrated parts gradually separate to expand the opening due to the force, and quickly reset and engage after the force is released, ensuring the rapid installation of the wire harness protection and stable protection during use.

[0032] In this embodiment, as Figure 3 and Figure 4 As shown, the inner protrusion 6 and the first serrated part are located on the same side of the through cut of the tube body 1, and the wear-resistant inner layer 2 has a semi-circular groove on the other side of the through cut that is complementary to the shape of the inner protrusion 6.

[0033] With the above structure, when the tube body 1 is not under force, the inner protrusion 6 and the slot are engaged, and together with the buckle 5, they achieve a double-end limiting interlocking structure to ensure the stability of the tube body 1 after it is closed. The wear-resistant inner layer 2 and the inner protrusion 6 are made of polyurethane material. With its moderate Shore hardness of 80A-95A, high elongation at break of 800%, and in-mold integral molding process, the protrusion structure and the slot maintain a long-term matching degree.

[0034] In this embodiment, as Figure 1 and Figure 3 As shown, the auxiliary adhesive component 8 includes a hook and loop fastener that cooperate with each other. The hook and loop fastener are located on both sides of the through cut of the tube body 1. The axial length of the buckle 5 is the same as the axial length of the tube body 1. The axial length of the auxiliary adhesive component 8 is equal to the axial length of the buckle 5. The outer wall of the impact-resistant outer layer 4 is bonded with a disposable dustproof mold on the outer side of the hook and loop fastener.

[0035] With the above structure, when the tube body 1 needs to be covered according to the bending path of the wire harness, it needs to deform. At this time, the buckle 5 and the inner protrusion 6 will fail. However, the auxiliary adhesive part 8 can form a full-coverage protection with its own adhesive structure. Therefore, there is no need to use additional auxiliary tools such as cable ties and tape. Only the disposable dustproof mold needs to be removed to quickly achieve seamless closure of the cut of the tube body 1. This effectively prevents the opening of the tube body 1 from cracking. It provides a convenient, reliable and immediate protection solution for the covering of wire harnesses with complex paths, and significantly improves the applicability and reliability of the wire harness protective sleeve in complex wiring scenarios.

[0036] The specific operating procedure of this utility is as follows: Select the appropriate tube body 1 according to the diameter and length of the wire harness. The tube body 1 adopts a modular design, and can achieve any length requirement by splicing multiple sections of tube body 1, avoiding the problem of uneven cross-section caused by traditional sleeve cutting.

[0037] During operation, the operator holds the tube body 1 with both hands and applies a separation force to both sides along the axial cut end using the gripping force provided by the friction-enhancing component 7. At this time, the first and second serrated parts of the buckle 5 gradually separate due to the elastic deformation of the tube body 1, and the inner protrusion 6 also gradually disengages from the semi-circular groove. During the application of force, the buckle 5 and the inner protrusion 6 only separate in the force-bearing area, while the remaining unforced parts remain engaged, ensuring the structural stability of the tube body 1 during opening. At the same time, the wire harness is embedded into the tube body 1 along the cut, ensuring that the wire harness is completely within the protection range of the wear-resistant inner layer 2.

[0038] When the applied external force is released, the tube body 1, due to the elastic recovery characteristics of the wear-resistant inner layer 2 (polyurethane) and the supporting middle layer 3 (thermoplastic elastomer), causes the first and second sawtooth parts of the buckle 5 to automatically reset and engage. The inner layer protrusion 6 also simultaneously engages into the semi-circular groove, forming a double locking structure to ensure the stability of the tube body 1 after it is closed. For wire harnesses with straight or small-angle curved wiring, reliable fixation can be achieved solely by relying on the buckle 5 and the inner layer protrusion 6.

[0039] When the tube body 1 needs to cover the wiring according to the bending path of the wire harness, the buckle 5 and the inner protrusion 6 are prone to failure due to excessive deformation of the tube body 1. At this time, the hook and loop surfaces of the auxiliary adhesive 8 are attached. First, the dustproof mold set on the outside of the impact-resistant outer layer 4, corresponding to the hook and loop surfaces of the auxiliary adhesive 8, is peeled off to expose the hook and loop surfaces. The adhesive force of the hook and loop surfaces provides additional anti-separation protection. The axial length of the hook and loop is consistent with the buckle 5, which can form continuous protection along the entire length of the cut, preventing the opening of the tube body 1 from cracking and ensuring that the wire harness is effectively protected under complex working conditions.

[0040] The present invention has been described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A protective sleeve for wire harnesses, comprising a sleeve body (1), characterized in that: The tube body (1) includes a wear-resistant inner layer (2), a support middle layer (3) and an impact-resistant outer layer (4). The wear-resistant inner layer (2), the support middle layer (3) and the impact-resistant outer layer (4) adopt a coaxial composite structure from the inside to the outside. A through cut is provided on one side of the outer wall of the tube body (1) along the axial direction. At the cut end along the axial direction of the tube body (1), the outer wall of the support middle layer (3) is symmetrically provided with mutually cooperating buckles (5). The wear-resistant inner layer (2) is provided with an inner layer protrusion (6) along the tube body (1). The impact-resistant outer layer (4) is provided with an auxiliary adhesive (8) near the buckle (5).

2. The protective sleeve for wire harnesses according to claim 1, characterized in that: The wear-resistant inner layer (2), the supporting middle layer (3), and the impact-resistant outer layer (4) are three layers arranged in concentric circles around the axis of the tube body (1). The interfaces of each layer are bonded together by hot melt to form an integrated tube body (1) structure.

3. The protective sleeve for wire harnesses according to claim 1, characterized in that: The inner wall of the wear-resistant inner layer (2) is smooth, and the outer wall of the impact-resistant outer layer (4) is provided with friction-enhancing parts (7). The friction-enhancing parts (7) are rhomboid protrusions and are distributed in a ring around the axis of the tube body (1).

4. A protective sleeve for wire harnesses according to claim 1, characterized in that: The buckle (5) includes a first serrated piece and a second serrated piece, which form an interlocking structure and are distributed in a mirror symmetrical manner about the axis of the through cut of the tube body (1).

5. A protective sleeve for wire harnesses according to claim 1, characterized in that: The inner protrusion (6) and the first serrated part are located on the same side of the through cut of the tube body (1), and the wear-resistant inner layer (2) has a semi-circular groove on the other side of the through cut that is complementary to the shape of the inner protrusion (6).

6. A protective sleeve for wire harnesses according to claim 1, characterized in that: The auxiliary adhesive component (8) includes a hook and loop fastener that cooperate with each other. The hook and loop fastener are located on both sides of the through cut of the tube body (1). The axial length of the buckle (5) is consistent with the axial length of the tube body (1). The axial length of the auxiliary adhesive component (8) is equal to the axial length of the buckle (5). The outer wall of the impact-resistant outer layer (4) is bonded with a disposable dustproof mold on the outer side of the hook and loop fastener.

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