A Teflon wire harness sleeve

Abstract

The present invention belongs to the technical field of wire sleeves, and discloses a Teflon wire harness sleeve for being arranged outside an assembled and formed wire harness to form a wrapping. The Teflon wire harness sleeve includes a Teflon sleeve layer and an expansion net layer as sheet bodies. Both the Teflon sleeve layer and the expansion net layer are curled to form a sleeve structure. The expansion net layer is inside the Teflon sleeve layer, and the curled closing edges of the Teflon sleeve layer and the expansion net layer are both fixed on a set of connecting strips extending along the length direction of the sleeve structure to form an internally and externally nested sleeve. A plurality of snap buttons for mutually buckling and making two connecting strips fit and fix are equidistantly arranged on the connecting strips. The structure of the present invention is stable and convenient for secondary replacement and installation.

Description

Technical Field

[0001] The present invention belongs to the technical field of wire harness sleeves, and particularly relates to a Teflon wire harness sleeve. Background Art

[0002] In the field of mechanical automation, wire harnesses are usually used in some automation systems for unified connection and wire splitting, so as to have a high degree of regularity and avoid the relative movement of automation equipment being affected by irregular unconstrained flying wires. Such wire harnesses will be bound by sleeves or other structures. Commonly used ones include rubber sleeves, binding tapes, telescopic mesh sleeves, etc. Through such external binding structures, the wire harness has a high integrity. And some automation equipment will use structures such as armored sleeves, bellows or drag chains as the protective structure for the outer layer of the wire harness. This outer layer structure can not only bind the wire harness, but also perform a certain range of reciprocating displacement along with the moving mechanism, and also has high protection performance. At the same time, in some complex automated mechanical equipment, additional functions such as electromagnetic shielding and heat insulation and flame retardance are also considered, and corresponding protective materials will also be set on the surface of the wire harness.

[0003] However, among the wire harness protection structures mentioned above, most of them are structures that have been arranged when installing the automated mechanical equipment or automation system. Because the above-mentioned several wire harness protection structures are usually integral sleeve structures, they cannot be nested and installed on the existing formed wire harnesses of the equipment. It is necessary to remove one end of the wire harness and then perform nested installation. In the prior art, there is also a method of covering with polymer cloth later, but this method has poor integrity and low service life, and needs to be regularly inspected and replaced. What is needed now is a wire harness sleeve structure that is convenient for later installation or replacement, has high disassembly and assembly efficiency and high stability and can be used for a long time. Summary of the Invention

[0004] In order to solve the problems existing in the prior art, the present invention provides a double-layer sleeve structure, which realizes the external sleeving of the connected wire harness through snap-type curling. It not only has a convenient disassembly and assembly process, but also can provide good protection performance and binding effect while maintaining the lightweight characteristics through the different characteristics of the inner and outer layer structures.

[0005] The technical solution adopted by the present invention is as follows:

[0006] In a first aspect, the present invention provides a Teflon wire harness sleeve for being disposed outside an assembled and formed wire harness to form a wrap, including a Teflon sleeve layer and an expansion net layer as sheet bodies. The Teflon sleeve layer and the expansion net layer are both curled to form a sleeve structure. The expansion net layer is inside the Teflon sleeve layer, and the curled closing edges of the Teflon sleeve layer and the expansion net layer are both fixed on a set of connecting strips extending along the length direction of the sleeve structure to form an internally and externally nested sleeve. A number of snap buttons for mutually buckling and making two connecting strips fit and fix are equidistantly arranged on the connecting strips.

[0007] It is worth noting that this sleeve is a snap-type sleeve structure, having an opening along the length direction, that is, a gap where a set of connecting strips is provided. The inner and outer two curled materials are closed by the connecting strips. The so-called snap buttons are structures respectively symmetrically arranged on two connecting strips of the same group, and the buckling is achieved by a person pressing against two corresponding snap buttons by hand.

[0008] Since the Teflon material itself has relatively high structural strength and small expansion and bending properties, it can be used as a good lightweight protection material and disposed on the outer layer of the wire harness. The inner expansion net layer generally adopts a polyester or nylon expansion net surface material, which can wrap the nested wire harness from the inner layer, thus achieving the effect of binding multiple wire harnesses.

[0009] This design method is mainly aimed at wrapping an already assembled and formed wire harness. For example, for some electric control mechanical equipment, such as industrial machine tools or robotic arms, such automated equipment will set relatively long cables for some traveling mechanisms, and some armored protection structures, such as cable carriers, will be provided outside the cables. However, the cable carrier itself has a fixed bending direction and is relatively heavy. The wire harness sleeve in this application can replace the existing corrugated pipes and cable carriers, and can be directly nested and installed without disassembling the wire harness, and can form nested fixation through snap button buckling.

[0010] Combined with the first aspect, the present invention provides a first implementation manner of the first aspect. The Teflon sleeve layer and the expansion net layer are curled and nested to form a main sleeve, and further includes a branch expansion net tube for sleeving a branch line separated from the main wire harness. The branch expansion net tube is formed by buckling two expansion sheet bodies that expand and contract in a direction perpendicular to the length. Edge strips are respectively provided on two side edges in the length direction of the expansion sheet body, and a number of snap buttons are provided on the edge strips. The two expansion sheet bodies are buckled through the snap buttons provided on the two side edge strips to form a sleeve structure.

[0011] It should be noted that the characteristic of the wire harness is that it includes numerous cables with different specifications and connection relationships. The main cable is used to connect two main components, but the wire harness also contains other branch lines, that is, they may be connected to the same module as the main cable, but the other ends are respectively connected to two ports. At this time, it is necessary to separate branch lines from the wire harness, that is, to separate straight lines from the above-mentioned main sleeve. However, the protection requirements of these straight lines are reduced, and the split-line telescopic pipe can be made of the same material as the telescopic mesh layer but with a reduced size.

[0012] Among them, two telescopic sheet bodies are buckled. Different from the way of directly curling a single telescopic sheet body, it is equivalent to setting two telescopic mesh layer structures to buckle and wrap the branch line inside. This setting method can utilize the original Teflon sleeve layer and telescopic mesh layer to extend straight lines through the gaps between adjacent snap buttons. At the same time, the split-line telescopic sleeve can penetrate into this gap and realize "seamless" nested connection through clamping with the snap button or other means. The so-called side strip and connection strip are made of the same material, but the size is smaller than that of the connection strip. Similarly, the snap button structure provided on the side strip is the same as the snap button provided on the connection strip, but the size is reduced.

[0013] Combined with the first implementation manner of the first aspect, the present invention provides a second implementation manner of the first aspect. A sleeve hole for the snap button to pass through is provided on the end side strip of the split-line telescopic pipe. Two groups of sleeve holes are respectively sleeved on two groups of adjacent and snap-button-connected snap buttons on the connection strip.

[0014] It should be noted that the so-called sleeve hole structure is two holes directly opened at the end of the side strip. Since the side strip itself has a non-telescopic structural feature, in order to enable the end of the split-line telescopic pipe to penetrate into the connection gap of the main sleeve to achieve "seamless" connection, first determine the position of the gap where the straight line needs to pass through, then disassemble two groups of adjacent snap buttons at this gap, and sleeve the corresponding sleeve holes of the split-line telescopic pipe on the inner surface of the corresponding snap buttons. Since the snap button itself will form a columnar structure with a certain thickness between the two connection strips when buckled, by sleeving the sleeve hole on this columnar structure and then buckling the two snap buttons again, a fixed connection relationship is formed between the end of the split-line telescopic pipe and the main sleeve. And although the size of the split-line telescopic pipe is smaller than that of the main sleeve, it has telescopic performance perpendicular to the length direction. When connecting two adjacent snap buttons with a certain distance, the end of the split-line telescopic pipe will stretch, and gradually contract in the part that loses the snap button limiting effect subsequently to form a split-line sleeve structure that fits the branch line.

[0015] Combined with the first aspect, the present invention provides a third implementation manner of the first aspect. The Teflon sleeve layer is a grid sheet body formed by braiding Teflon wires, and the telescopic mesh layer is a telescopic sheet body formed by braiding polyester fiber wires and rubber wires.

[0016] Combined with the third implementation manner of the first aspect, the present invention provides a fourth implementation manner of the first aspect. The cross-sectional dimension of the first sleeve formed by curling the Teflon sheath layer is more than twice the maximum cross-sectional dimension formed after the wire harness is bound. The cross-sectional dimension of the second sleeve formed by curling the telescopic mesh layer is less than half of the maximum cross-sectional dimension formed after the wire harness is bound in the unloaded state.

[0017] Combined with the first aspect or several implementation manners of the first aspect, the present invention provides a fifth implementation manner of the first aspect. The snap fastener includes a structure that passes through, connects, and clamps on both sides of the connecting strip. A swivel base is rotatably connected to the end of the snap fastener on the inner side of the connecting strip. A slot and a convex block are provided on the swivel base. The convex block on one swivel base is inserted into the slot on the other swivel base to achieve clamping connection.

[0018] Combined with the fifth implementation manner of the first aspect, the present invention provides a sixth implementation manner of the first aspect. The swivel base is a cylindrical structure, and has a semi-circular slot and a semi-circular convex block with equal diameters on the inner side. A buckle strip is provided on the convex block, and a buckle groove for cooperating with the buckle strip for clamping connection is provided at the corresponding position of the slot.

[0019] Combined with the sixth implementation manner of the first aspect, the present invention provides a seventh implementation manner of the first aspect. The convex block is a hollow structure. When the convex block is inserted into the corresponding slot, it elastically depresses towards the hollow part to reduce the outer diameter of the end.

[0020] Combined with the first aspect or several implementation manners of the first aspect, the present invention provides an eighth implementation manner of the first aspect. A shielding layer is provided inside the telescopic mesh layer, and the shielding layer is composed of several spiral metal wires.

[0021] Combined with the first aspect or several implementation manners of the first aspect, the present invention provides a ninth implementation manner of the first aspect. The surface of the connecting strip is provided with adhesive.

[0022] The beneficial effects of the present invention are as follows:

[0023] (1) Through the double-layer structure design of different materials, and adopting a group of connecting strips to form a detachable double-layer sleeve structure by curling with snap fasteners, the present invention is not only convenient for disassembly and assembly, but also utilizes the good telescopic characteristics of the inner telescopic mesh layer to be able to bind the wire harness well. The outer Teflon sheath layer has the characteristics of light weight and high structural strength, and can provide good protection performance for the inner structure and the wire harness, being scratch-resistant and corrosion-resistant.

[0024] (2) By setting appropriate sizes for the inner and outer sleeves in the present invention, the telescopic mesh layer on the inner layer can fit onto the surface of the wire harness, and can maintain a good binding effect even when the wire harness bends significantly. There is a large gap between the outer Teflon sleeve layer and the wire harness wrapped by the telescopic mesh layer, enabling the wire harness to bend significantly within the Teflon sleeve layer, thereby reducing the bending degree of the Teflon sleeve layer, making good use of the material properties of the Teflon sleeve layer, and the vacant area in the middle can also play a good buffering role during impact;

[0025] (3) In the present invention, the branched telescopic pipe is connected to the main sleeve and wraps the branch line separated from the wire harness, thereby making use of the adjacent snap fastener gaps of the connecting strips of the main sleeve itself to flexibly arrange the branch positions of the branch lines. At the same time, combined with the provided sleeve hole structure, a set of snap fasteners used for buckling can also be used as fixed points to achieve a "seamless" connection to the main sleeve. In some application environments that require a good shielding effect, this "seamless" connection method, combined with the shielding layer material, has a good shielding effect, and is different from the prior art where it is necessary to manually set the coil at the branch point, having a more efficient and stable installation and connection method;

[0026] (4) By optimizing the snap fastener structure in the present invention, the inner end part thereof has a symmetrical swivel structure, and each swivel is provided with a convex block that cooperates with a slot, without distinguishing between male and female heads, and without distinguishing between left and right, which provides convenience for the installation of two buckled branched telescopic pipe sleeves for the branch line layout. Combining with its rotation characteristics, it does not distinguish between left and right specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic diagram of the Teflon wire harness sleeve sleeved on the wire harness of the robotic arm in the embodiment of the present invention;

[0028] Figure 2 is the first axonometric view of the Teflon wire harness sleeve part in the embodiment of the present invention;

[0029] Figure 3 is the side view of the Teflon wire harness sleeve part in the embodiment of the present invention;

[0030] Figure 4 is the front view of the Teflon wire harness sleeve part in the embodiment of the present invention;

[0031] Figure 5 is the second axonometric view of the Teflon wire harness sleeve part in the embodiment of the present invention;

[0032] Figure 6 is the present invention Figure 5 The partial enlarged schematic view of A in.

[0033] In the figure: 1 - Teflon sleeve layer, 2 - wire-dividing telescopic network tube, 3 - telescopic network layer, 4 - connecting strip, 5 - snap button, 6 - swivel base, 7 - slot, 8 - bump, 9 - snap groove, 10 - snap strip, 11 - sleeve hole. Detailed implementation manners

[0034] The following further explains the present invention in conjunction with the attached drawings and specific embodiments.

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Usually, the components of the embodiments of the present application described and illustrated in the drawings here can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the present application claimed, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present application.

[0037] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0038] In the description of the present application, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is usually placed when in use. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application. In addition, in the description of the present application, if terms such as "first", "second", etc. are used only for distinguishing descriptions, they cannot be understood as indicating or implying relative importance.

[0039] In addition, in the description of the present application, if terms such as "horizontal" and "vertical" are used, it does not mean that the components are required to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0040] In the description of this application, it should also be noted that unless otherwise clearly specified and limited, if the terms "set", "install", "connected", and "connection" appear, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations. Embodiment

[0041] This embodiment discloses a Teflon wire harness sleeve structure, which is mainly applied to the wrapping and protection of wire harnesses. The wire harnesses therein include various automated mechanical equipment such as large-scale engineering operations and transportation vehicles, automated lathes, and automated robotic arms. Its characteristics are that it has multiple cables, mainly connecting the action mechanisms, and in some scenarios, it needs to have a certain redundant length to be able to follow and stretch, and the wire harness itself also has several branch lines, and different wire splitting positions will be set according to different connection ports.

[0042] Specifically, referring to Figure 1 , the Teflon wire harness sleeve structure in this embodiment includes a main sleeve and a sub-sleeve. The main sleeve is used to be sleeved outside the main wire harness and is used to connect between two or more main conductive modules. The sub-sleeve is mainly sleeved on the branch lines branched from the sub-wire harness and is used to connect the main sleeve.

[0043] The main sleeve is a double-layer nested structure, which includes an outer Teflon sleeve layer 1 and an inner telescopic mesh layer 3.

[0044] Both the Teflon sleeve layer 1 and the telescopic mesh layer 3 are formed by curling curved plates with a certain length. The curling openings of the two layers of materials face the same direction, and connecting strips 4 are uniformly connected on the two sides of the long strip-shaped opening. The connecting strip 4 is made of a material that cannot be stretched and extended, but has a bending property. The connecting strip 4 is used for edge sealing and fixing, fixing the sides of the Teflon sleeve layer 1 and the telescopic mesh layer 3 on the two groups of connecting strips 4, and then forming a detachable connection of the two connecting strips 4 through the connectors arranged on the connecting strip 4.

[0045] Furthermore, the connectors are a number of snap fastener 5 structures arranged at equal intervals along the length direction of the connecting strip 4. Corresponding snap fastener 5 structures are respectively arranged on the two connecting strips 4. The snap fasteners 5 on the two sides of the connecting strip 4 are clamped by fingers from the outside to make them snap together, so as to abut and fix the two connecting strips 4, and form a nested sleeve structure of the two curled materials to be sleeved outside the wire harness.

[0046] The snap fastener 5 therein has a structure similar to that of existing clothing buttons and can adopt a circular clamping method with male and female heads. By setting appropriate materials and dimensions, a stable connection relationship can be formed after clamping, maintaining the connection state when swinging with the wire harness, and forming a gap between adjacent snap fasteners 5, which can facilitate the branch lines in the wire harness to pass through and connect to external devices.

[0047] Furthermore, the auxiliary sleeve in this embodiment is a wire-splitting telescopic network tube 2, which uses the same braided telescopic material as the telescopic network layer 3 and has high elastic telescopic performance, capable of covering the branch lines. In order to cooperate with the seamless connection method with the main sleeve, the wire-splitting telescopic network tube 2 in this embodiment is formed by clamping two telescopic sheet bodies of the same specification and material. Each telescopic sheet body can be regarded as similar to the structure of the telescopic network layer 3, having a longer length and a smaller width. Along the two side edges in the length direction, there are inextensible edge strip materials provided, and there are also several snap fastener 5 structures arranged at equal intervals along the length direction on the edge strip materials. The side edges of the two telescopic sheet bodies are pressed and fixed through the snap fasteners 5. Different from the telescopic network layer 3 structure which is formed by curling a single-layer mesh fabric material into a sleeve, the wire-splitting telescopic network tube 2 is formed by clamping the side edges of two independent telescopic sheet bodies to form a sleeve structure.

[0048] Among them, the snap fastener 5 structure of the wire-splitting telescopic network tube 2 is the same as that on the connecting strip 4, but the size is smaller, suitable for covering and fixing single or small cross-section branch lines. At the end edge strip of the wire-splitting telescopic network tube 2, there is a sleeve hole 11, and the size of the sleeve hole 11 is the same as the external size of the snap fastener 5, capable of sleeving outside a set of snap fasteners 5 that have been clamped on the connecting strip 4. When connecting, the end of the wire-splitting telescopic network tube 2 with the sleeve hole 11 penetrates into the gap between the two connecting strips 4, and then the edge strip of the wire-splitting telescopic network tube 2 is fixed through the snap fastener 5, thereby realizing the seamless connection between the wire-splitting telescopic network tube 2 and the main sleeve.

[0049] During installation, the existing wire harness routing and wire splitting will be used to confirm the plan. First, cut the materials of the Teflon sleeve layer 1, wire-splitting telescopic network tube 2, and telescopic network layer 3 into determined lengths. The Teflon sleeve layer 1 and the telescopic network layer 3 only need to be cut according to the length, and they have been connected to the two groups of connecting strips 4 during factory production to form an inner and outer double-layer sleeve material.

[0050] Then, starting from one end of the wire harness trunk, directly curl and nest the double-layer material of the main sleeve on the wire harness, and then sequentially fasten and fix the snap fasteners 5. During nesting, due to the good ductility of the telescopic network layer 3, an external force is first used to stretch it. When the snap fasteners 5 are fastened, the telescopic network layer 3 in the corresponding area will tighten the wire harness after losing the external force, and there is a certain gap between the outer Teflon sleeve layer 1 and the telescopic network layer 3.

[0051] When encountering a branch line during installation, rotate to adjust the outlet position so that the outlet positions of all branch lines on the wire harness are kept at the gaps of the connecting strip 4. Then adjust the position of the main sleeve so that the outlet point of each branch line is between two snap fasteners 5. Then, when the two telescopic sheet bodies are buckled to the corresponding snap fasteners 5, the sleeve holes 11 are sleeved on the outer end faces of the snap fasteners 5, and the ends of the two telescopic sheet bodies are buckled so that they wrap the branch line to form a branch line telescopic network tube 2. Then buckle the two snap fasteners 5 on both sides of the gap where the branch line appears, so that the end of the branch line telescopic network tube 2 is restricted within the gap of the snap fastener 5 of the main sleeve. After that, gradually buckle the snap fasteners 5 of the branch line telescopic network tube 2 sleeved outside the branch line to complete the installation.

[0052] Further, referring to Figures 2 - 6 , in this embodiment, the wire harness of the automated robotic arm structure on the existing automobile production and manufacturing assembly line is sleeved and protected to replace the worn drag chain structure after long-term use.

[0053] Specifically, referring to Figure 2 , the figure shows a partial structure of the Teflon wire harness sleeve. The form in the figure is the state where the main sleeve is curled and not buckled. At the same time, there is an end of a branch line telescopic network tube 2, which is used to show the connection method between the branch line telescopic network tube 2 where the branch line appears and the main sleeve.

[0054] Among them, the Teflon sleeve layer 1 is the material on the outermost part of the main sleeve. In this embodiment, a mesh material formed by braiding Teflon filaments is used. By curling, a cross-sectional size larger than more than one time the maximum cross-sectional size of the wire harness in the bundled state is formed. This size limitation causes a large gap to be formed between the Teflon sleeve layer 1 and the internal wire harness when the main sleeve outer layer structure is curled, thereby providing impact resistance. At the same time, the wire harness can also have a certain bending amplitude within the Teflon sleeve layer 1. This structural design enables the bending amplitude of the Teflon sleeve layer 1 itself to be much smaller than the bending of the wire harness at a certain bending angle, so as to adapt to the relatively hard characteristics of the Teflon material itself.

[0055] The inner telescopic mesh layer 3 is made of a mesh cloth braided with polyester fibers. Rubber filaments are added to the polyester fibers to provide elastic stretching performance. At the same time, metal wires are helically wound in the polyester fibers to form a shielding layer through the metal wires. When the telescopic mesh layer 3 is curled to form a sleeve, its cross-sectional size is much smaller than the maximum cross-sectional size of the wire harness in the bundled state, generally less than more than half of it, so that the telescopic mesh layer 3 can better wrap the wire harness. Through the rubber filaments it has, an elastic binding force is formed, and it can also better fit the surface of the wire harness when the wire harness is bent. The shielding layer formed by the provided metal wires can protect the wire harness from external electromagnetic interference.

[0056] The sides of the telescopic mesh layer 3 and the sides of the Teflon sleeve layer 1 are fixedly connected to the corresponding side of the connecting strip 4. During the production process, the connection can be achieved by means of heat fusion connection, adhesive connection, and mechanical clamping fixation. The connecting strip 4 itself is made of Teflon material, that is, it is integrally formed with the Teflon sleeve layer 1, and then the telescopic mesh layer 3 is connected to the inner long side of the connecting strip 4.

[0057] Further, a number of snap buttons 5 are provided on the surface of the connecting strip 4. The structure of the snap button 5 is symmetrically arranged. Referring to Figure 3 the side view, it can be seen that on the upper and lower two connecting strips 4, two groups of snap buttons 5 are symmetrically arranged. Each snap button 5 is a cylindrical structure similar to the letter "H", including the enlarged ends on both sides and the connecting shaft in the middle. The connecting shaft passes through the through hole provided on the connecting strip 4 and is clamped and fixed on the connecting strip 4 by the enlarged ends on both sides. In a specific implementation manner, the snap button 5 can be designed as two snap-together parts, and the snap-together clamping connection is achieved by passing through the through hole.

[0058] On Figure 3 the upper and lower two surfaces of the connecting strip 4 in

[0059] the snap button 5 has an arc surface, which is convenient for the operator's finger to touch and press. And on the inner sides of the two connecting strips 4, a swivel base 6 is rotatably connected to the snap button 5. Figure 6 Referring to

[0060] it can be seen that the swivel base 6 is cylindrical. One end of it is rotatably connected to the inner end face of the snap button 5, and a semicircular convex block 8 and a semicircular slot 7 are provided on the other end face. The convex block 8 and the slot 7 are respectively two parts of a circular groove and have the same radius size. The convex block 8 of one swivel base 6 can be correspondingly inserted into the slot 7 of another swivel base 6, so that the two relatively arranged swivel bases 6 as shown in the figure can be inserted and fixed to each other.

[0061] In some implementation manners, the size of the convex block 8 itself is slightly larger than the inner diameter of the slot 7. When inserting, a certain clamping force needs to be provided by the finger, so that the convex block 8 can deform and shrink to be inserted into the slot 7 to form an interference fit. Figure 6 Referring to

[0062] it can be seen that the middle of the convex block 8 is a hollow structure, which can better make it receive a binding force and deform inwardly.

[0063] This symmetric structure is designed to enable direct alignment, insertion, and fixation by rotation without differentiating between male and female connectors or connection directions when engaging in different directions in this embodiment. This not only reduces the cost of the snap fasteners 5 with unified specifications at the production end but also saves more time during installation. At the same time, this symmetric cooperation mode of the semi-circular convex blocks 8 and the slots 7 can be better separated only when an external force perpendicular to the flat end face of the semi-circle is applied, which is different from the existing snap-fastening mode of circular male-female nested fasteners that has an omnidirectional separation end. This embodiment can improve the connection stability after forming the sleeve, and improve its directional opening performance during the continuous movement and bending of the wire harness, which helps reduce the possibility of accidental opening by external forces. For convenient manual disassembly, an indication mark can be provided at the swivel base 6.

[0064] The present invention is not limited to the above optional embodiments, and anyone can obtain various other forms of products under the inspiration of the present invention. The above specific embodiments should not be construed as limiting the protection scope of the present invention, and the protection scope of the present invention should be defined by the claims, and the specification can be used to interpret the claims.

Claims

1. A Teflon wire harness sleeve, which is used to be arranged outside an assembled and formed wire harness to form a wrapping, and is characterized in that: It includes a Teflon sheath layer (1) and a telescopic mesh layer (3) in the form of sheets. Both the Teflon sheath layer (1) and the telescopic mesh layer (3) are curled to form a sleeve structure. The telescopic mesh layer (3) is located inside the Teflon sheath layer (1), and the curled closing edges of the Teflon sheath layer (1) and the telescopic mesh layer (3) are fixed on a set of connecting strips (4) extending along the length direction of the sleeve structure to form an inner and outer nested sleeve. A number of snap buttons (5) are equidistantly arranged on the connecting strips (4) to enable the snap connection and fixing of two connecting strips (4). The cross-sectional dimension of the curled Teflon sheath layer (1) is more than one time larger than the maximum cross-sectional dimension in the state where the wire harness is bundled. The Teflon sheath layer (1) and the telescopic mesh layer (3) are curled and nested to form a main sleeve. It also includes a branch telescopic sleeve tube (2) for sleeving the branches separated from the wire harness. The branch telescopic sleeve tube (2) is formed by buckling two telescopic sheets that can be telescoped in a direction perpendicular to the length. Edge strips are respectively provided on two side edges in the length direction of the telescopic sheet, and a number of snap buttons (5) are provided on the edge strips. The two telescopic sheets are buckled through the snap buttons (5) provided on the two side edge strips to form a sleeve structure. A sleeve hole (11) for the snap button (5) on the connecting strip (4) to pass through is provided on the end edge strip of the branch telescopic sleeve tube (2). The two groups of sleeve holes (11) are respectively sleeved on two adjacent and snap-connected groups of snap buttons (5) on the connecting strip (4). The cross-sectional dimension of the second sleeve formed by curling the telescopic mesh layer (3) in the non-loaded state is less than half of the maximum cross-sectional dimension formed after the wire harness is bound.

2. The Teflon wire harness sleeve according to claim 1, characterized in that: The Teflon sheath layer (1) is a grid sheet formed by braiding Teflon wires, and the telescopic mesh layer (3) is a telescopic sheet formed by braiding polyester fiber wires and rubber wires.

3. A Teflon wire harness sleeve according to claim 1 or 2, characterized in that: The snap button (5) on the connecting strip (4) includes a structure that passes through and clamps from both sides of the connecting strip (4). A swivel base (6) is rotatably connected to the end of the snap button (5) on the inner side of the connecting strip (4). A slot (7) and a convex block (8) are provided on the swivel base (6). The convex block (8) on one swivel base (6) is inserted into the slot (7) on the other swivel base (6) to achieve snap connection.

4. A Teflon wire harness sleeve according to claim 3, characterized in that: The swivel base (6) is in a cylindrical structure, with a semi-circular slot (7) and a semi-circular convex block (8) having equal diameters on the inner side. A buckle strip (10) is provided on the convex block (8), and a buckle groove (9) for cooperating with the buckle strip (10) for snap connection is provided at the corresponding position of the slot (7).

5. A Teflon wire harness sleeve according to claim 4, characterized in that: The convex block (8) is in a hollow structure. When the convex block (8) is inserted into the corresponding slot (7), it elastically depresses towards the hollow part to reduce the outer diameter of the end.

6. A Teflon wire harness sleeve according to claim 1 or 2, characterized in that: A shielding layer is provided inside the telescopic mesh layer (3), and the shielding layer is composed of a number of spiral metal wires.

7. A Teflon wire harness sleeve according to claim 1 or 2, characterized in that: The bonding surface of the connecting strip (4) has adhesive.

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