Teflon wire sleeve and sleeving method

Abstract

This invention belongs to the field of wire harness technology and discloses a Teflon wire conduit sleeve and its sleeve method. The main body of the sleeve has at least two ridges along its length, with an inwardly recessed portion between the ridges and an outer protective portion on the outside. The inwardly recessed portion is bent to form a raised tube portion protruding into the cavity. Double-layer protection can be formed by the raised tube portion surrounding the inner sleeve cavity, or radial limiting can be achieved by directly compressing the wire harness. Multiple independent inwardly recessed cavities can also be provided for bundled wiring. Alternatively, the inwardly recessed portion can be bent by pulling a rope, and the wire harness can be bundled and fixed to the vehicle body with a buckle. This invention achieves protection and bundled wiring with a single-layer Teflon substrate, simplifying the process, reducing costs, adapting to different specifications of wire harnesses, eliminating vibration, noise, and wear, and can also isolate wire harnesses in separate cavities. It is convenient to install and fix, and has high protective stability, making it particularly suitable for automotive wire harness scenarios.

Description

Technical Field

[0001] This invention belongs to the field of wire harness technology, specifically relating to a Teflon wire conduit sleeve and its sleeve method. Background Technology

[0002] Currently, in the field of wire harness protection technology, especially in automotive wire harness protection scenarios, various standard wire harness wrapping methods are employed, including simple tape wrapping, corrugated tubing wrapping, and double-layer wire harness sleeves. These double-layer sleeves typically consist of an outer Teflon protective layer and an inner gathering sleeve. The Teflon protective layer possesses excellent wear resistance and impact resistance, providing stable external physical protection for the wire harness. The inner gathering sleeve employs a stretchable elastic structure to wrap and secure the wire harness, achieving neat and controlled positioning. Furthermore, existing double-layer sleeves usually feature a design with openings on the same side. The openings are secured using a snap-fit ​​mechanism, allowing wire harness branch lines to be led out through the gaps in the openings and connected to branch tubes for protection.

[0003] However, in practical applications, the aforementioned double-layer wire harness sleeve has significant drawbacks. On the one hand, due to the inherent low ductility of Teflon material, the outer Teflon protective layer cannot shrink and adapt synchronously with the inner coiled sleeve. This results in a persistent buffer gap between the sleeve and the edge of the coiled wire harness. Under continuous vibration and shaking conditions generated by vehicle operation, the inner coiled sleeve and the wire harness will continuously impact the outer Teflon protective layer. This not only produces abnormal noises and affects the driving experience, but long-term impacts can also cause the inner coiled sleeve to crack and the wire harness sheath to wear, posing a serious safety hazard. On the other hand, the double-layer structure requires the separate preparation and assembly of two materials with different properties. The manufacturing process is complex, production costs are high, and the finished product size is fixed with poor adaptability, making it impossible to flexibly meet the needs of coiling wire harnesses of different specifications and quantities. Summary of the Invention

[0004] To address the problems existing in the prior art, this invention provides a Teflon electrical conduit sleeve and its sleeve method, which utilizes a concave portion formed by a single layer of material to wrap or compress the wire harness, thereby achieving different effects.

[0005] The technical solution adopted in this invention is as follows:

[0006] In a first aspect, the present invention provides a Teflon wire conduit sleeve, which is sleeved on the outside of a combined wire harness for protection and constriction, including a tubular sleeve body, wherein the sleeve body has at least two ridges along its length, and between two adjacent ridges is an inner recess that bends along the ridges and is recessed into the sleeve body, and the sleeve body outside the ridges is an outer protective part.

[0007] The concave portion can be recessed into the interior of the sleeve body with two adjacent ridges as inflection points, forming a raised tube portion that protrudes into the inner cavity of the sleeve body.

[0008] Furthermore, the ridge line is a bendable structure extending along the length of the main body of the sleeve, and the bendable structure is any one of a pressed bend line or a continuous discontinuous hollow strip.

[0009] Furthermore, the two axial sides of the tube sleeve body are provided with a closing connection part extending along the length direction. The closing connection part is a U-shaped bent double-layer strip structure or a single-layer extruded strip structure. Several spaced insertion holes are opened on the two closing connection parts respectively. The two closing connection parts can be fitted together and can be detachably fixed by locking parts passing through the corresponding insertion holes.

[0010] Furthermore, an avoidance cutout is provided on the closing connection between two adjacent insertion holes, and the avoidance cutout is an oblong hole extending along the length direction of the tube sleeve body.

[0011] Furthermore, the concave portion and the outer protective portion are separate structures, and the ridge line is a hinged connection structure between the concave portion and the outer protective portion. The concave portion is bent inward relative to the outer protective portion through the hinged connection structure.

[0012] Furthermore, the concave portion and the outer protective portion are separate structures, the ridge line is a flexible bridging layer, the concave portion is a highly elastic polymer material, and the two side edges of the concave portion are fixedly connected to the corresponding outer protective portion through the flexible bridging layer.

[0013] Furthermore, the raised tube portion encloses an inner sleeve cavity for accommodating and bundling the wire bundle, and there is a buffer gap between the inner sleeve cavity and the outer sleeve cavity formed by the outer protective portion.

[0014] Furthermore, the raised surface of the raised tube faces the central axis of the tube body, and the outer protective part encloses and forms the main receiving cavity. The wire harness is placed in the main receiving cavity and is squeezed and pressed against by the raised surface of the raised tube to achieve radial limiting and convergence.

[0015] This invention also discloses a sleeve method, which uses the above-described Teflon conduit sleeve to wrap the wire harness, including the following steps:

[0016] S1. First, select a sheet-shaped Teflon substrate of the corresponding size according to the total outer diameter of the wire harness to be wrapped and the branch line lead-out position. Mark at least two ridges extending along the length direction on the sheet-shaped Teflon substrate. The area between two adjacent ridges is the concave part, and the area outside the ridges is the outer protective part.

[0017] S2. Then, based on the marked ridge position, a bendable ridge is formed on the substrate by pressing, or a continuous discontinuous hollow strip is formed at the ridge position by hollowing.

[0018] S3. Then bend the concave part towards one side of the substrate along the ridge line to form a raised tube. Adjust the bending angle of the concave part so that the inner diameter of the inner sleeve cavity formed by the raised tube is compatible with the total outer diameter of the wire bundle to be wrapped.

[0019] S4. Place the main wire harness to be wrapped inside the inner sleeve cavity to complete radial bundling, and lead out the branch wires of the wire harness from the end of the inner sleeve cavity or the preset notch;

[0020] S5. Finally, the two axial sides of the outer protective part are brought together inward to form an outer sleeve cavity that wraps around the inner sleeve cavity. The two sides are joined together and fixed by locking the corresponding insertion holes, thus forming a double-layer protective sleeve structure made of a single-layer substrate.

[0021] This invention also discloses a sleeve method, which uses the above-described Teflon conduit sleeve to wrap the wire harness, including the following steps:

[0022] H1. First, select a Teflon sleeve body with at least two ridges extending along the length direction. The space between two adjacent ridges is a concave part, and the outside of the ridges is an outer protective part. The two axial sides of the sleeve body are pre-set with a closing connection part with a insertion hole.

[0023] H2. Then place the entire wire harness to be gathered into the inner cavity of the tube body, and adjust the position of the wire harness according to the branch wire lead-out requirements so that the lead-out end of the branch wire corresponds to the avoidance cutout part on the closing connection part.

[0024] H3. Then, along the ridge line, bend the concave part into the inner cavity of the tube body to form a raised tube part that bulges into the inner cavity. At the same time, close the connecting parts on both sides of the tube body inward so that the raised surface of the raised tube part is tightly pressed against the outer wall of the wire harness. Adjust the bending depth of the concave part so that the wire harness is completely radially limited and there is no radial wobbling gap.

[0025] H4. Finally, lead the branch wires of the wire harness out from the corresponding clearance cutout, fully fit the two connecting parts together, and use the locking piece to pass through the corresponding insertion hole to complete the closing and fixing of the tube body, and finally complete the tube gathering operation of the wire harness.

[0026] The beneficial effects of this invention are as follows:

[0027] (1) This invention optimizes the structure of a single-layer Teflon substrate by setting an inner concave part with a ridge and an outer protective part on the main body of the sleeve. The raised tube part formed by bending the inner concave part inward can realize the function of wire harness gathering and protection. There is no need to set a double-layer composite structure, which greatly simplifies the sleeve preparation process and reduces the production cost. At the same time, the excellent wear resistance and impact resistance of the Teflon substrate itself can be fully preserved, ensuring the external protection effect of the wire harness.

[0028] (2) The present invention can adjust the bending degree of the concave part and the protrusion size of the raised tube part to adapt to the wire harness gathering requirements of different outer diameters and different numbers, solving the problem of low extensibility and inability to flexibly gather and limit the traditional Teflon sleeve, and greatly improving the applicable range and adaptability of the sleeve.

[0029] (3) In one embodiment of the present invention, the wire harness can be directly squeezed against the inner cavity of the sleeve body by the raised tube, thereby achieving radial limiting and gathering of the wire harness, eliminating the shaking gap between the wire harness and the inner wall of the sleeve, and fundamentally avoiding the abnormal noise and wear problems caused by the collision between the wire harness and the inner wall of the sleeve under vibration conditions, greatly improving the stability and safety of wire harness protection, especially suitable for use scenarios such as automotive wire harnesses where there is continuous vibration.

[0030] (4) In another embodiment of the present invention, an inner sleeve cavity can be formed by enclosing the raised tube portion, and a double-layer protective structure prepared by a single-layer substrate can be formed with the outer sleeve cavity enclosed by the outer protective portion. While retaining the buffer protection effect, it does not require the composite preparation of two materials, further reducing the production difficulty. Moreover, the specifications of the inner sleeve cavity can be flexibly adjusted according to the wire harness size, making it more adaptable.

[0031] (5) By setting a closing connection part with insertion hole and avoidance hollow part on the side of the main body of the sleeve, the present invention can not only realize the quick closing and fixing of the sleeve, but also flexibly lead out the wire harness branch through the avoidance hollow part without the need to open an additional gap, making the operation convenient, while ensuring the integrity and protection effect of the sleeve structure. Attached Figure Description

[0032] Figure 1 This is a plan view of an electrical conduit sleeve without bending inward in an embodiment of the present invention;

[0033] Figure 2 This is an isometric view of an electrical conduit sleeve without bending inward in an embodiment of the present invention;

[0034] Figure 3 This is a planar schematic diagram of an electrical conduit sleeve bent inward in an embodiment of the present invention;

[0035] Figure 4 This is an isometric view of an electrical conduit sleeve bent inward in an embodiment of the present invention;

[0036] Figure 5 This is a planar schematic diagram of an embodiment of the present invention where the conduit sleeve protrudes inward and contains an inner wire.

[0037] Figure 6 This is a first isometric view of an electrical conduit sleeve bulging inward in an embodiment of the present invention;

[0038] Figure 7 This is a second isometric view of an electrical conduit sleeve bulging inward in an embodiment of the present invention;

[0039] Figure 8 This is the present invention. Figure 7 A magnified view of part A in the diagram;

[0040] Figure 9 This is a plan view of another type of electrical conduit sleeve without bending inward in an embodiment of the present invention;

[0041] Figure 10 This is a planar schematic diagram of another embodiment of the present invention, where the conduit sleeve protrudes inward and abuts against the wire on the outside.

[0042] In the diagram: 1-Outer protective part, 2-Inner recessed part, 3-Closing connection part, 4-Insertion hole, 5-Avoiding hollow part, 6-Raised tube part. Detailed Implementation

[0043] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0044] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0045] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0046] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0047] In the description of this application, it should be noted that the use of terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product is in use. These terms are used solely for the convenience of describing this application and for 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 application. Furthermore, the use of terms such as "first" and "second" in the description of this application is only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0048] Furthermore, the use of terms such as "horizontal" and "vertical" in the description of this application does not imply that the component is required to be absolutely horizontal or suspended, but rather that it may be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but rather that it may be slightly tilted.

[0049] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" 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 between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0050] Example 1:

[0051] This exemplary embodiment provides a Teflon wire conduit sleeve, which is fitted onto the outside of a combined wire harness to achieve protection and constriction. The core structure includes a sleeve body. The sleeve body has at least two ridges along its length, and an indentation 2 is provided between two adjacent ridges. The sleeve body outside the ridges is the outer protective part 1. The indentation 2 can be recessed into the sleeve body with the two adjacent ridges as inflection points, forming a raised tube part 6 protruding into the inner cavity of the sleeve body.

[0052] The core logic of this embodiment is that by optimizing the structure of a single-layer substrate, using the ridge line as the bending reference, and through the directional bending deformation of the concave part 2, a raised tube part 6 with adjustable height and shape is formed inside the tube body. The wire harness can be simultaneously bundled and limited and wear-resistant protected by a single-layer structure, without the need for composite multiple layers of materials with different properties. This solves the core problems of low ductility and inability to flexibly bundle wire harnesses in traditional Teflon sleeves.

[0053] In some embodiments, the ridge is a bendable structure extending along the length of the sleeve body, used to reduce the resistance when the concave portion 2 is bent, and to ensure bending accuracy and morphological stability.

[0054] In one possible implementation, the bendable structure is a bend line formed by pressing the main substrate of the sleeve through a roll forming process. The substrate thickness at the bend line is less than the substrate thickness of the outer protective part 1 and the inner concave part 2, forming a bendable area guided by the thickness difference. During the bending process, there will be no problem of substrate cracking or springback. The processing technology is simple and can realize continuous production.

[0055] In another possible implementation, the bendable structure is a continuous, discontinuous perforated strip arranged along the ridge line. The discontinuous perforated strip consists of multiple equally spaced perforations. The perforated structure reduces the structural strength at the ridge line, enabling directional bending. At the same time, the perforated structure can adapt to the radial deformation of the tube sleeve body, preventing structural warping after bending and making it suitable for applications involving large-angle bending.

[0056] Optionally, both axial sides of the sleeve body are provided with a closing connection part 3 extending along the length direction, which is used to realize the closing and fixing of the sleeve body and the closure of the opening.

[0057] In one possible implementation, refer to Figure 1 The closing connection part 3 is a U-shaped bent double-layer strip structure, which is formed by pressing the substrate on the side of the tube body outward. The double-layer structure can improve the structural strength of the closing connection part 3 and avoid tearing or deformation during locking.

[0058] In another possible implementation, the closing connection part 3 is a single-layer extruded strip structure, which is formed synchronously with the outer protective part 1 of the tube body through an integrated extrusion process, without bending seams, resulting in stronger overall structure and higher production efficiency.

[0059] For example, the two connecting parts 3 are provided with a plurality of spaced-apart insertion holes 4. The two connecting parts 3 can be fitted together and detachably fixed by locking members passing through the corresponding insertion holes 4. The locking members can be any of plastic pins, metal buckles, or cable ties, to adapt to different installation conditions and disassembly requirements. The locking members are not shown in the accompanying drawings of this invention. In general embodiments, plastic pins and buckles are often used for fixed connection.

[0060] Optional, refer to Figure 7 and Figure 8An avoidance cutout 5 is provided on the closing connection part 3 between two adjacent insertion holes 4. The avoidance cutout 5 is an oblong hole extending along the length of the tube body. The avoidance cutout 5 can reduce the bending resistance of the closing connection part 3 between adjacent insertion holes 4, adapt to the radial deformation after the tube body is closed, and at the same time can serve as a lead-out channel for the wire harness branch line, without the need to open an additional notch on the tube body, thus ensuring the integrity and protective effect of the tube structure.

[0061] In one possible implementation, a double-layer protective structure is provided, in which a raised section encloses and forms an inner sleeve cavity, as described below. Figure 9 and Figure 10 The raised tube portion 6 encloses an inner sleeve cavity to accommodate and bundle the wire bundle, and a buffer gap exists between the inner sleeve cavity and the outer sleeve cavity formed by the outer protective portion 1. This embodiment forms a double-layer sleeve structure by bending a single-layer substrate, which retains the buffering and protective effect while eliminating the need for composite preparation of two materials, greatly simplifying the production process.

[0062] For example, in this embodiment, the inner recess 2 and the outer protective part 1 are integrally formed structures, made from the same Teflon sheet substrate. The ridge line is a bending line formed on the substrate by a pressing process. The inner recess 2 occupies 2 / 5 of the arc range of the tube sleeve body section, ensuring that it can be enclosed to form a complete inner sleeve cavity after bending.

[0063] The wire harness sleeve method according to this embodiment includes the following steps:

[0064] Step 1: Based on the total outer diameter of the wire harness to be wrapped and the branch line exit position, select a sheet of Teflon substrate of the corresponding size, and mark the positions of two ridges extending along the length direction on the sheet of Teflon substrate. The area between the two ridges is the concave part 2, and the area outside the ridges is the outer protective part 1.

[0065] Step 2: Based on the marked ridge position, a thinning bending line is formed on the substrate using a roll forming process, which serves as the positioning reference for the bending of the concave part 2;

[0066] Step 3: Bend the concave part 2 towards one side of the substrate along the ridge line to form the raised tube part 6. Adjust the bending angle of the concave part 2 so that the inner diameter of the inner sleeve cavity formed by the raised tube part 6 matches the total outer diameter of the wire harness to be wrapped, ensuring that there is no radial movement after the wire harness is placed in.

[0067] Step 4: Place the main wire harness to be wrapped inside the inner sleeve cavity to complete radial bundling, and lead out the branch wires of the wire harness from the end of the inner sleeve cavity;

[0068] Step 5: Bring the two axial sides of the outer protective part 1 together inward to form an outer sleeve cavity that wraps around the inner sleeve cavity, so that a uniform buffer gap is formed between the inner sleeve cavity and the outer sleeve cavity. Fit the two sides together with the connecting parts 3, and fix them by passing plastic pins through the corresponding insertion holes 4, and finally form a double-layer protective sleeve structure made of a single-layer substrate.

[0069] Optionally, in some optional embodiments provided in this embodiment, the concave portion 2 and the outer protective portion 1 are separate structures, and the ridge line is a hinged connection structure between the concave portion 2 and the outer protective portion 1. The concave portion 2 is bent inward and recessed relative to the outer protective portion 1 through the hinged connection structure.

[0070] The hinged connection structure adopts a hinge structure that is continuously set along the length direction. The two leaves of the hinge are fixedly connected to the side of the inner concave part 2 and the side of the outer protective part 1 by rivets, which can realize the free bending of the inner concave part 2 from 0-180°, with less bending resistance and no springback after bending, and stronger dimensional stability of the inner sleeve cavity.

[0071] The wire harness sleeve method corresponding to this optional embodiment includes the following steps:

[0072] Step 1: Based on the total outer diameter of the wire harness to be wrapped, prefabricate the corresponding outer protective part 1, inner recess 2 and hinged joint. Fix the two sides of the inner recess 2 to the inner sides of the two outer protective parts 1 respectively through the hinged joint. The axis of the hinged joint is the ridge line.

[0073] Step 2: Bend the concave part 2 into the area between the two outer protective parts 1 around the axis of the hinged joint to form the raised tube part 6. Adjust the bending angle of the concave part 2 so that the inner diameter of the inner sleeve cavity formed by the raised tube part 6 matches the total outer diameter of the wire harness to be wrapped.

[0074] Step 3: Place the main wire harness to be wrapped inside the inner sleeve cavity to complete radial bundling, and lead out the branch wires of the wire harness from the end of the inner sleeve cavity;

[0075] Step 4: Fold the free sides of the two outer protective parts 1 inward to form an outer sleeve cavity that wraps around the inner sleeve cavity. Fit the two side connecting parts 3 together and fix them by passing through the corresponding insertion holes 4 with metal buckles to complete the double-layer sleeve wrapping of the wire harness.

[0076] In some alternative embodiments provided in this embodiment, the concave portion 2 and the outer protective portion 1 are separate structures, the ridge line is a flexible bridging layer, the concave portion 2 is a highly elastic polymer material, and the two side edges of the concave portion 2 are fixedly connected to the corresponding side of the outer protective portion 1 through the flexible bridging layer.

[0077] For example, the soft bridging layer is made of silicone rubber and is bonded and fixed to the outer protective part 1 made of Teflon material and the inner concave part 2 made of high elastic polymer material through a hot vulcanization process. The inner concave part 2 can be made of TPU elastic material, which can adapt to the fluctuation of the outer diameter of the wire harness through its own elasticity after bending, thereby further improving the wire harness gathering effect of the inner sleeve cavity.

[0078] The wire harness sleeve method corresponding to this optional embodiment includes the following steps:

[0079] Step 1: Based on the fluctuation range of the outer diameter of the wire harness to be wrapped, select a TPU elastic sheet of the corresponding width as the inner concave part 2, select a Teflon sheet of the corresponding size as the outer protective part 1, and select a silicone rubber strip as the soft bridging layer.

[0080] Step 2: Through hot vulcanization, the two sides of the concave part 2 are fixedly connected to the inner side of the outer protective part 1 through a soft bridging layer. The axis of the soft bridging layer is the ridge line, thus completing the prefabrication of the main body of the sleeve.

[0081] Step 3: Bend the concave part 2 along the soft bridging layer into the area between the two outer protective parts 1 to form a raised tube part 6. Use the elastic deformation of the concave part 2 to adjust the inner diameter of the inner tube cavity so that it fits the total outer diameter of the wire harness to be wrapped.

[0082] Step 4: Place the main wire harness to be wrapped inside the inner sleeve cavity, and complete the radial gathering of the wire harness through the elastic contraction of the concave part 2. Lead out the branch wires of the wire harness from the clearance cutout part 5 on the closing connection part 3.

[0083] Step 5: Fold the free sides of the two outer protective parts 1 inward to form an outer sleeve cavity, and fit the folded connecting parts 3 of the two sides together. Secure them by passing the corresponding plug holes 4 through the binding straps to complete the sheathing of the wire harness.

[0084] In another possible implementation, a raised tube section is used to press against and achieve radial limiting and convergence of the wire harness, as described in the following figure. Figures 1-8 The raised surface of the raised tube section 6 faces the central axis of the sleeve body. The outer protective part 1 encloses and forms the main receiving cavity. The wire harness is placed in the main receiving cavity and is pressed and abutted by the raised surface of the raised tube section 6, achieving radial limiting and convergence. In this embodiment, the raised tube section 6, formed by bending the concave part 2, directly compresses and limits the wire harness, eliminating the swaying gap between the wire harness and the inner wall of the sleeve body, and fundamentally avoiding impact noise and wear problems under vibration conditions.

[0085] For example, in this embodiment, the concave portion 2 and the outer protective portion 1 are integrally extruded Teflon tube structures. The cross-section of the tube body is a C-shaped opening structure, and two parallel ridges are provided along the length of the tube body. The concave portion 2 occupies 3 / 5 of the arc range of the tube body cross-section, ensuring that the raised tube portion 6 formed after bending has sufficient extrusion stroke to adapt to the limiting requirements of wire harnesses with different outer diameters. The ridges are continuous discontinuous hollow strips provided along the length direction, reducing the resistance of the concave portion 2 bending inward, and at the same time adapting to the structural deformation during the bending process.

[0086] The wire harness sleeve method according to this embodiment includes the following steps:

[0087] Step 1: Select a C-shaped Teflon tube sleeve body with two prefabricated continuous broken hollow ridges extending along the length direction. The area between the two ridges is the inner concave part 2, and the outer side of the ridges is the outer protective part 1. The two open sides of the tube sleeve body are prefabricated with a closing connection part 3 with an insertion hole 4 and a clearance hollow part 5.

[0088] Step 2: Place the entire wire harness to be bundled into the main receiving cavity of the tube body. Adjust the position of the wire harness according to the branch wire lead-out requirements so that the lead-out end of the branch wire corresponds to the avoidance cutout part 5 on the closing connection part 3.

[0089] Step 3: Bend the concave part 2 along the ridge line into the main receiving cavity of the tube body to form a raised tube part 6 that protrudes into the inner cavity. At the same time, close the closing connecting parts 3 on both sides of the tube body inward so that the raised surface of the raised tube part 6 is tightly pressed against the outer wall of the wire harness. Adjust the bending depth of the concave part 2 so that the wire harness is completely radially limited and there is no radial wobbling gap.

[0090] Step 4: Lead the branch wire of the wire harness out from the corresponding clearance cutout 5, fully fit the two closing connection parts 3 together, and complete the closing and fixing of the tube body by passing through the corresponding insertion hole 4 with plastic pins, and finally complete the tube sheathing and bundling operation of the wire harness.

[0091] Optionally, in some of the alternative embodiments provided in this implementation, the concave portion 2 and the outer protective portion 1 are separate structures, and the ridge line is a hinged connection structure between the concave portion 2 and the outer protective portion 1. The concave portion 2 is bent inward relative to the outer protective portion 1 through the hinged connection structure. The hinged connection structure adopts plastic hinge seats spaced apart along the length direction, and a gap is reserved between adjacent hinge seats for the wire harness branch to be led out, eliminating the need for additional hollow structures and further simplifying the production process.

[0092] The wire harness sleeve method corresponding to this optional embodiment includes the following steps:

[0093] Step 1: Based on the maximum outer diameter of the wire harness to be bundled, prefabricate a Teflon outer protective part 1, an inner recess 2, and a plastic hinge seat with corresponding curvature. Hinge the two sides of the inner recess 2 to the two inner sides of the outer protective part 1 through the plastic hinge seat. The rotation axis of the hinge seat is the ridge line.

[0094] Step 2: Place the entire wire harness to be bundled into the cavity formed by the outer protective part 1 and the inner recess 2, and adjust the position of the wire harness so that the branch wire lead-out end corresponds to the gap between the adjacent hinge seats.

[0095] Step 3: Bend the concave part 2 into the cavity around the rotation axis of the hinge seat to form a raised tube part 6 that protrudes towards the center of the cavity, so that the raised surface of the raised tube part 6 presses against the outer wall of the wire harness until there is no radial wobbling gap in the wire harness.

[0096] Step 4: Lead the branch wires of the wire harness out from the gap between the adjacent hinge seats, fit the two free sides of the outer protection part 1 together with the connecting parts 3, and fix them by passing the metal buckle through the corresponding insertion hole 4 to complete the sheathing and gathering of the wire harness.

[0097] In some alternative embodiments provided in this embodiment, the concave portion 2 and the outer protective portion 1 are separate structures, the ridge line is a flexible bridging layer, the concave portion 2 is a highly elastic polymer material, and the two side edges of the concave portion 2 are fixedly connected to the corresponding side of the outer protective portion 1 through the flexible bridging layer.

[0098] For example, the recessed portion 2 is made of a memory polymer material, which can be freely bent and deformed at room temperature and can return to its initial shape after the temperature rises, making it easy to disassemble and reuse the wire harness; the soft bridging layer is made of fluororubber, which has excellent adhesion compatibility with the Teflon outer protective portion 1 and can adapt to automotive working conditions of -40℃ to 120℃, avoiding adhesion failure under high and low temperature cycling.

[0099] The wire harness sleeve method corresponding to this optional embodiment includes the following steps:

[0100] Step 1: Based on the operating conditions of the automotive wiring harness, select the outer protective part 1 made of Teflon, the inner concave part 2 made of shape memory polymer, and the soft bridging layer made of fluororubber. Through the hot vulcanization process, fix the two sides of the inner concave part 2 to the inner side of the outer protective part 1 through the soft bridging layer. The axis of the soft bridging layer is the ridge line, thus completing the prefabrication of the main body of the sleeve.

[0101] Step 2: Place the prefabricated tubular body onto the outside of the automotive wiring harness to be bundled, so that the entire wiring harness is placed in the main receiving cavity formed by the outer protective part 1. Adjust the position of the wiring harness branch lines so that they correspond to the avoidance cutout part 5 on the connecting part 3.

[0102] Step 3: Bend the concave part 2 into the main receiving cavity along the soft bridging layer to form the raised tube part 6, so that the raised surface of the raised tube part 6 presses against the outer wall of the wire harness, and at the same time close the closing connection parts 3 on both sides, adjust the bending depth of the concave part 2 so that the wire harness is completely radially limited and there is no radial wobbling gap.

[0103] Step 4: Lead the wire harness branch out from the corresponding clearance cutout 5, and fix it by passing the plastic pin through the corresponding insertion hole 4 on the closing connection part 3, thus completing the sleeve gathering of the automotive wire harness.

[0104] Step 5: When it is necessary to disassemble the wire harness, heat the main body of the sleeve to restore the concave part 2 of the memory polymer material to its initial straight shape and make the raised tube part 6 disappear. Then the restriction on the wire harness can be released and the sleeve can be quickly disassembled.

[0105] In one possible implementation, based on the single-layer substrate double-layer protection logic of the first implementation, the tube body is provided with two to three sets of parallel ridge lines along the length direction. Each set of ridge lines includes two ridge lines extending along the length direction of the tube body. Each set of ridge lines is provided with an independent inner recess 2. Adjacent inner recesses 2 are separated by an outer protective part 1. Each inner recess 2 can be independently bent and recessed into the tube body along the ridge line of the corresponding set to form an independent raised tube 6. Each raised tube 6 is respectively enclosed to form an independent inner tube cavity, which can independently bundle different types of wires into separate cavities to avoid mutual interference and wear between different wires.

[0106] For example, in this embodiment, the main body of the sleeve is integrally molded from the same Teflon sheet substrate. Two sets of ridge lines are arranged parallel to each other along the width direction of the substrate, and two independent inner recesses 2 are provided accordingly. The two inner recesses 2 are separated by an outer protective part 1 with a width of 8mm. Each inner recess 2 occupies 1 / 5 of the arc range of the cross section of the sleeve body. After bending, they can be enclosed to form independent inner sleeve cavities, which can respectively accommodate the power harness and signal harness of the car, realizing the cavity isolation and protection of the strong and weak wire harnesses.

[0107] Optionally, the ridge line corresponding to each concave part 2 adopts a continuous discontinuous hollow strip structure to ensure that each concave part 2 can be bent and adjusted independently without interfering with each other, and can be adapted to the wire harness gathering requirements of different outer diameters.

[0108] The wire harness sleeve method according to this embodiment includes the following steps:

[0109] Step 1: Based on the number of wire harness groups to be wrapped and the total outer diameter of each group of wire harnesses, select a sheet of Teflon substrate of the corresponding size. Mark the positions of multiple sets of parallel ridges on the substrate corresponding to the number of wire harness groups. The area between each set of ridges is an independent concave part 2, and the area between adjacent concave parts 2 and outside the ridges is the outer protective part 1.

[0110] Step 2: Based on the marked ridge line positions, use laser cutting technology to form continuous broken cutout strips at each set of ridge line positions, which serve as the positioning reference for the corresponding concave part 2 bends;

[0111] Step 3: Bend the corresponding concave part 2 along each ridge line toward the same side of the substrate to form multiple independent raised tube parts 6. Adjust the bending angle of each concave part 2 so that the inner diameter of the inner sleeve cavity formed by each raised tube part 6 matches the total outer diameter of the corresponding group of wire bundles.

[0112] Step 4: Place the wire harnesses of different groups into the corresponding inner sleeve cavities to complete independent radial bundling, and lead out the branches of each group of wire harnesses from the end of the corresponding inner sleeve cavity or the preset notch of the outer protective part 1 between adjacent inner recesses 2.

[0113] Step 5: Bring the two axial sides of the outer protective part 1 together inward to form an outer sleeve cavity that wraps around all the inner sleeve cavities, so that a uniform buffer gap is formed between each inner sleeve cavity and the outer sleeve cavity. Fit the two sides together with the connecting parts 3, and fix them by passing plastic pins through the corresponding insertion holes 4, and finally form a double-layer protective sleeve structure with multiple independent cavities.

[0114] Optionally, in some optional embodiments provided in this embodiment, each independent concave portion 2 adopts a split structure. The concave portion 2 is made of a highly elastic polymer material, and the ridge line is a flexible bridging layer. The two sides of each concave portion 2 are fixedly connected to the corresponding outer protective portion 1 through the flexible bridging layer. Each concave portion 2 can independently adapt to the outer diameter fluctuation of the corresponding wire harness through its own elastic deformation, further improving the adaptability of the cavity convergence.

[0115] In one possible implementation, based on the protruding tube compression limiting logic of the second implementation, the closing connection part 3 on the side of the tube body is eliminated, and the directional bending and recessing of the inner concave part 2 and the wire harness compression limiting are realized by the pull rope drive structure. At the same time, the body fixing function of the tube is integrated, and there is no need to set up an additional cable tie fixing structure.

[0116] For example, the core structure of this embodiment includes a sleeve body, a pull rope 7, a guide structure, and a locking buckle 9.

[0117] The main body of the sleeve adopts an integrally extruded Teflon tubular structure with an axially openable through opening for quick insertion of the wire harness. The bottom of the cross-section of the main body of the sleeve has a concave part 2. Two ridges extending along the length of the main body of the sleeve are provided on both sides of the concave part 2. The ridges are roll-formed thickness reduction bending lines. The concave part 2 can be bent and recessed into the inner cavity of the main body of the sleeve along the two ridges to form a raised tube part 6 protruding into the inner cavity.

[0118] The pull rope 7 is made of high-strength nylon braided rope. The bottom end of the pull rope 7 is fixed to the center of the inner wall of the concave part 2 by hot pressing. Several sets of guide rings 8 are equally spaced on the inner wall of the tube body and on both sides of the symmetrical center line of the concave part 2. The guide rings 8 are integrally extruded with the inner wall of the tube body. The central axis of the guide rings 8 is perpendicular to the length direction of the tube body. The pull rope 7 passes through the guide rings 8 at the corresponding heights one by one along the inner wall of the tube body.

[0119] Finally, the pull rope 7 extends out of the tube sleeve from the pre-set through hole at the top of the tube sleeve body. The end of the pull rope 7 extending out of the tube sleeve is integrally formed with an enlarged end 10. The outer diameter of the enlarged end 10 is larger than the inner diameter of the through hole and the guide collar 8, which prevents the pull rope 7 from retracting and falling off, and at the same time makes it easy for the operator to grab and pull. Along the length direction of the tube sleeve body, a set of pull ropes 7 and corresponding guide collars 8 and through hole structures are set every 50mm to ensure that the wire harness in the entire length range of the tube sleeve body can be uniformly squeezed and limited.

[0120] Optionally, the cross-section of the main body of the tube sleeve is symmetrically provided with two concave parts 2. The two concave parts 2 are located at the bottom and top of the cross-section of the main body of the tube sleeve, respectively. Each concave part 2 is provided with an independent pull rope 7. The two pull ropes 7 pass through the inner walls of both sides of the main body of the tube sleeve, and can simultaneously drive the two concave parts 2 to bend and sink towards the center of the tube cavity, forming a bidirectional compression limiting effect, further improving the fixing stability of the wire harness.

[0121] The locking buckle 9 is an integral plastic structure set independently of the main body of the sleeve, including the buckle body, the locking clip 12 and the snap-fit ​​clamping end 13; the buckle body has a through hole 11 in the middle, which allows multiple adjacent pull ropes 7 to pass through at the same time in the length direction of the sleeve body; the buckle body has a flat abutment end face facing the sleeve body, which can fit tightly against the outer wall of the sleeve body.

[0122] The locking clip 12 is mounted on the buckle body via a hinge shaft. The inner side of the locking clip 12 is provided with anti-slip teeth. After the locking clip 12 is engaged, it can be embedded in the busbar hole 11, pressing all the pull ropes 7 passing through the busbar hole 11 to achieve one-way locking of the pull ropes 7. After pulling the pull ropes 7 and removing the force, the pull ropes 7 cannot spring back to their original position. The snap-fit ​​clamping end 13 is located at the end of the buckle body away from the tube sleeve body, including two openable and closable pointed claws. After the two pointed claws are engaged, they can form a closed annular clamping structure, which can be snapped and fixed on the sheet metal clamping points and wire harness brackets of the car body to achieve synchronous fixation of the tube sleeve body and the car body.

[0123] The wire harness sleeve method according to this embodiment includes the following steps:

[0124] Step 1: Select a Teflon tube sleeve body with a corresponding number of pull ropes 7 and guide structure, open the through opening in the axial direction of the tube sleeve body, insert the automotive wiring harness to be bundled into the inner cavity of the tube sleeve body, and adjust the direction and position of the wiring harness to correspond to the position of the concave part 2.

[0125] Step 2: Based on the preset locking point positions on the car body, determine the installation points of the locking and fixing buckles 9, and pass all the pull ropes 7 within the preset length range around the installation points through the corresponding confluence holes 11 of the buckles 9 in sequence, so that the abutting end face of the buckle 9 is tightly attached to the corresponding position on the outer wall of the sleeve body.

[0126] Step 3: Simultaneously pull all the pull ropes 7 passing through the busbar 11. The pulling force is transferred to the corresponding concave part 2 through the guide collar 8. The concave part 2 is driven to bend and sink into the inner cavity of the tube body along the ridge line, forming a raised tube part 6 that protrudes into the inner cavity. The raised surface of the raised tube part 6 is tightly pressed against the outer wall of the wire harness. Continue to pull the pull ropes 7 until the wire harness is completely radially limited and there is no radial sway gap. At this time, viewed from the side of the tube body along its length, multiple pull ropes 7 form a fan-shaped bundle structure with the buckle 9 as the apex, achieving uniform bundle within the corresponding length range of the tube body.

[0127] Step 4: Snap the locking clip 12 of buckle 9 into place, and press all the pull ropes 7 with the anti-slip teeth on the inner side of the locking clip 12 to complete the locking and fixing of the pull ropes 7, and maintain the bent state of the concave part 2 and the continuous compression limit on the wire harness.

[0128] Step 5: Engage the two pointed claws of the clamping end 13 at the end of the buckle 9 to form a closed ring clamping structure, and clamp and fix it on the corresponding preset clamping point on the car body, simultaneously completing the body fixation of the tube sleeve body and the wire harness gathering and limiting operation.

[0129] Optionally, in some optional embodiments provided in this implementation, an independent guide collar 8 is not provided on the inner wall of the tube body. Instead, several sets of folded cuts are opened on the wall surface of the tube body by laser cutting process. After the folded cuts are folded into the tube cavity, a perforated structure is formed, which replaces the guide collar 8 to realize the guiding and limiting of the pull rope 7. No additional guiding structure is required, which further simplifies the production process of the tube body.

[0130] Optionally, the pull rope 7 is made of ultra-high molecular weight polyethylene fiber rope, which has extremely low elongation and extremely high tensile strength, ensuring that there will be no stretching deformation during the pulling process, accurately controlling the bending depth of the concave part 2, and adapting to the high and low temperature conditions of automobiles, avoiding aging and breakage after long-term use.

[0131] This invention is not limited to the optional embodiments described above, and anyone can derive other various forms of products based on the inspiration of this invention. The specific embodiments described above should not be construed as limiting the scope of protection of this invention; the scope of protection of this invention should be determined by the claims, and the specification can be used to interpret the claims.

Claims

1. A Teflon conduit sleeve, fitted over the outside of a combined wire harness for protection and restraint, characterized in that: The tube includes a tubular body, which has at least two ridges along its length, and between two adjacent ridges is an inner recess (2) that bends along the ridges and is recessed into the tube body. The tube body outside the ridges is an outer protective part (1). The concave portion (2) can be recessed into the interior of the sleeve body with two adjacent ridges as inflection points, forming a raised tube portion (6) that protrudes into the inner cavity of the sleeve body.

2. The Teflon electrical conduit sleeve according to claim 1, characterized in that, The ridge line is a bendable structure extending along the length of the main body of the sleeve. The bendable structure is either a pressed bend line or a continuous discontinuity hollow strip.

3. The Teflon electrical conduit sleeve according to claim 1, characterized in that, The two axial sides of the tube sleeve body are provided with a closing connection part (3) extending along the length direction. The closing connection part (3) is a U-shaped bent double-layer strip structure or a single-layer extruded strip structure. Several inter-spaced insertion holes (4) are opened on the two closing connection parts (3). The two closing connection parts (3) can be fitted together and can be detachably fixed by locking parts that pass through the corresponding insertion holes (4).

4. A Teflon electrical conduit sleeve according to claim 3, characterized in that, An avoidance cutout (5) is provided on the closing connection part (3) between two adjacent insertion holes (4), and the avoidance cutout (5) is a waist-shaped hole extending along the length direction of the tube sleeve body.

5. A Teflon electrical conduit sleeve according to claim 1, characterized in that, The concave portion (2) and the outer protective portion (1) are separate structures. The ridge line is a hinged connection structure between the concave portion (2) and the outer protective portion (1). The concave portion (2) is bent inward relative to the outer protective portion (1) through the hinged connection structure.

6. A Teflon electrical conduit sleeve according to claim 1, characterized in that, The concave portion (2) and the outer protective portion (1) are separate structures. The ridge line is a flexible bridging layer. The concave portion (2) is made of a highly elastic polymer material. The two sides of the concave portion (2) are fixedly connected to the corresponding outer protective portion (1) through the flexible bridging layer.

7. A Teflon electrical conduit sleeve according to claim 1, characterized in that, The raised tube (6) encloses and forms an inner sleeve cavity for accommodating and bundling the wire bundle, and there is a buffer gap between the inner sleeve cavity and the outer sleeve cavity formed by the outer protective part (1).

8. A Teflon electrical conduit sleeve according to claim 1, characterized in that, The raised surface of the raised tube (6) faces the central axis of the tube body. The outer protective part (1) surrounds and forms the main receiving cavity. The wire harness is placed in the main receiving cavity and is squeezed and pressed against by the raised surface of the raised tube (6) to achieve radial limiting and convergence.

9. A sleeve method, characterized in that, The method of wrapping wire harnesses using the Teflon conduit sleeve as described in claim 7 includes the following steps: S1. First, select a sheet of Teflon substrate of the corresponding size according to the total outer diameter of the wire harness to be wrapped and the branch line lead-out position. Mark at least two ridges extending along the length direction on the sheet of Teflon substrate. The area between two adjacent ridges is the concave part (2), and the area outside the ridges is the outer protective part (1). S2. Then, based on the marked ridge position, a bendable ridge is formed on the substrate by pressing, or a continuous discontinuous hollow strip is formed at the ridge position by hollowing. S3. Then bend the concave part (2) along the ridge line to one side of the substrate to form a raised tube part (6). Adjust the bending angle of the concave part (2) so that the inner diameter of the inner sleeve cavity formed by the raised tube part (6) matches the total outer diameter of the wire bundle to be wrapped. S4. Place the main wire harness to be wrapped inside the inner sleeve cavity to complete radial bundling, and lead out the branch wires of the wire harness from the end of the inner sleeve cavity or the preset notch; S5. Finally, the two axial sides of the outer protective part (1) are brought together inward to form an outer sleeve cavity that wraps around the inner sleeve cavity. The two sides are joined together (3) and fixed by the locking part through the corresponding insertion hole (4). Finally, a double-layer protective sleeve structure made of a single-layer substrate is formed.

10. A sleeve method, characterized in that, The wire harness is wrapped using the Teflon conduit sleeve described in claim 8. Includes the following steps: H1. First, select a Teflon sleeve body with at least two ridges extending along the length direction. The space between two adjacent ridges is a concave part (2), and the outside of the ridges is an outer protective part (1). The two axial sides of the sleeve body are pre-set with a closing connection part (3) with a insertion hole (4). H2. Then place the entire wire harness to be gathered into the inner cavity of the tube body, and adjust the position of the wire harness according to the branch wire lead-out requirements, so that the lead-out end of the branch wire corresponds to the avoidance cutout part (5) on the closing connection part (3). H3. Then bend the concave part (2) along the ridge line into the inner cavity of the tube body to form a raised tube part (6) that protrudes into the inner cavity. At the same time, close the connecting parts (3) on both sides of the tube body inward so that the raised surface of the raised tube part (6) is tightly pressed against the outer wall of the wire harness. Adjust the bending depth of the concave part (2) so that the wire harness is completely radially limited and there is no radial wobbling gap. H4. Finally, the branch wires of the wire harness are led out from the corresponding avoidance cutout (5), the two closing connection parts (3) are completely fitted together, and the locking part passes through the corresponding insertion hole (4) to complete the closing and fixing of the tube body, and finally complete the tube gathering operation of the wire harness.

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