Wire cover and wire harness
By using flexible sleeves and cable reels to secure the wire cores in the wire sheath, the problem of wear and tear caused by frequent bending at moving connection points is solved, thus protecting the wire cores and improving safety.
Patent Information
- Application Number
- CN202521169464.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-09
- Publication Date
- 2026-05-12
- Estimated Expiration
- 2035-06-09
AI Technical Summary
Existing electrical wires are prone to localized cracking and sheathing due to frequent bending at moving connection points. Exposed wire cores may cause short circuits or electrical fires, affecting safety during use.
It adopts a flexible sleeve and wire bundle structure. The flexible sleeve is double-conical, with the outer concave surface buffering stress and the inner convex surface extruding the wire core into an arc shape. The wire bundle fixes the wire core, reducing the bending amplitude and stress concentration, and preventing the wire core from being exposed.
It effectively reduces wire core wear, lowers safety hazards caused by bending, and improves the safety of wires in moving connection parts.
Smart Images
Figure CN224232395U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of wire technology, specifically relating to wire harnesses, and more particularly to wire sleeves and wire harnesses. Background Technology
[0002] In the electrical wiring system of electric vehicles, some wires need to frequently pass through the hinges or moving areas of moving parts such as doors and trunks (hereinafter referred to as "moving connection parts") to achieve electrical connection functions across opening and closing structures.
[0003] However, existing multi-wire harnesses consist of wire cores and an insulating outer layer. The insulating outer layer is wrapped around the wire core using an extruder and is usually made of rubber or plastic. During repeated opening and closing of the moving connection, the stress at the bending point of the wire will concentrate, which will accelerate the wear between the insulating outer layer and the wire core. In particular, after high-frequency bending and straightening, problems such as local cracking and sheath peeling are likely to occur. After the wire insulation layer is damaged, the exposed wire core or conductor may cause short circuits due to friction, compression or high temperature environment, or even lead to leakage or electrical fire, which seriously affects the safety of use.
[0004] Therefore, how to prevent the wire core from being exposed after wear at the bend of the wire is a technical problem that urgently needs to be solved in this field.
[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Utility Model Content
[0006] This disclosure provides at least one wire sleeve and wire harness to solve the technical problem of preventing wire core exposure after wear at the bend of the wire.
[0007] In a first aspect, embodiments of this disclosure provide an electrical wire sheath, comprising: a wrapping layer having a flat section and a bending section cable positioning member disposed between adjacent flat sections, adapted to clamp the flat section onto a mounting surface; a binding member disposed on the inner surface of the bending section; the binding member comprising a pair of cable reels adapted to be fitted onto the wire core, the two cable reels being connected thereto by a flexible sleeve; and the two flat sections being configured to bend toward each other.
[0008] In one alternative implementation, the distance between the two wire harness reels is L1, and the length of the inner core of the flexible sleeve is L2, where L1 < L2.
[0009] In one alternative embodiment, the flexible sleeve is biconical, with its diameter gradually increasing from the middle position towards both ends.
[0010] In one alternative embodiment, the flexible sleeve has an outer concave surface, which is adapted to buffer the bending stress on the core surface.
[0011] In one alternative embodiment, the flexible sleeve has an inner convex surface adapted to press the core toward its centerline, causing the core to arc to prevent it from straightening.
[0012] Secondly, embodiments of this disclosure also provide a wire harness, including: a plurality of wire cores, the surface of which is provided with a wrapping layer, the wrapping layer having flat sections and bending sections disposed between adjacent flat sections, the wrapping layer including: a wire positioning member adapted to clamp the flat sections onto an assembly surface, a binding member disposed on the inner surface of the bending section, wherein two flat sections are configured to bend toward each other, and the binding member is squeezed to reduce the bending stress on the surface of the wire cores.
[0013] In one alternative embodiment, the bundling element includes a pair of wire coils adapted to be fitted onto the wire core, the two coils being connected therein by a flexible sleeve, and two flat sections being configured to bend toward each other to compress the flexible sleeve to reduce bending stress on the wire core surface.
[0014] In one optional embodiment, the distance between the two wire bundles is L1, and the length of the inner core of the flexible sleeve is L2, where L1 < L2.
[0015] In one alternative embodiment, the flexible sleeve is biconical, with its diameter gradually increasing from the middle position towards both ends.
[0016] In one alternative embodiment, the flexible sleeve has an outer concave surface adapted to buffer bending stress on the surface of the core. The flexible sleeve also has an inner convex surface adapted to press the core toward its centerline, causing the core to be arc-shaped to prevent the core from straightening.
[0017] The beneficial effects of this utility model are that it provides a wire sleeve, which uses a wire positioning component to install the flat section on two movable assembly surfaces, allowing the bending section to be positioned in the movable area. By setting a binding component and a wire coil inside the bending section, the wire cores are gathered together, reducing the range of movement between the wire cores during bending, thereby reducing wear. In addition, the flexible sleeve wraps around the wire cores in the bending section, reducing the concentrated stress on the wire cores during bending, thereby achieving the effect of protecting the wire cores at the bending point.
[0018] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.
[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description
[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0021] Figure 1 A perspective view of the wire harness provided in an embodiment of this disclosure;
[0022] Figure 2 A perspective view of the bundling element and wire core provided in the embodiments of this disclosure;
[0023] Figure 3 This is a cross-sectional view of the bundling element and the wire core provided in an embodiment of this disclosure.
[0024] In the picture:
[0025] 1. Wire core;
[0026] 2. Wire sheath; 21. Sheath layer; 211. Flat section; 212. Bending section; 22. Cable positioning component; 23. Bundling component; 231. Cable reel; 232. Flexible sleeve; 233. Outer concave surface; 234. Inner convex surface. Detailed Implementation
[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0028] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.
[0029] In this document, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as “at least one of…” modify the entire list of elements when following a list of elements, rather than individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.
[0030] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise clearly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.
[0031] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.
[0032] Research has revealed the following drawbacks of existing technologies: Existing multi-wire harnesses consist of a wire core and an insulating outer layer. The insulating outer layer is typically made of rubber or plastic and is wrapped around the wire core using an extruder. During repeated opening and closing of the moving parts, stress concentrates at the wire bending points, accelerating wear between the insulating outer layer and the wire core. Especially after frequent bending and straightening, localized cracking and sheath peeling are common problems. Damaged insulation can expose the wire core or conductor, potentially causing short circuits due to friction, compression, or high temperatures, even leading to leakage or electrical fires, severely impacting safety.
[0033] Therefore, how to prevent the wire core from being exposed after wear at the bend of the wire is a technical problem that urgently needs to be solved in this field.
[0034] The shortcomings of the above solutions are the result of the utility model inventor's practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as contributions made by the utility model inventor to this disclosure.
[0035] 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.
[0036] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.
[0037] like Figures 1 to 3 As shown, some embodiments provide a wire sleeve, including: a wrapping layer 21, which is wrapped onto a bundle of wire cores 1 by an extruder; the wrapping layer 21 has a flat section 211 and a bent section 212 disposed between adjacent flat sections 211; the flat section 211 is used to abut against the assembly surface, and the bent section 212 is placed at the movable connection between the two assembly surfaces; when the two assembly surfaces are folded inward, the surface of the flat section 211 maintains its original shape, and the bent section 212 bends with the bending angle; a wire positioning member 22, which is suitable for clamping the flat section 211 onto the assembly surface, mainly playing the role of fixing the wire; and a binding member 23, which is used to bind the wire cores 1, specifically, the binding effect is achieved before the wrapping layer 21 is wrapped onto the wire cores 1 by the extruder, and it has a pre-positioning effect, and it is disposed on the inner surface of the bent section 212.
[0038] The binding element 23 includes a pair of wire bundles 231, which are adapted to be fitted onto the wire core 1. The two wire bundles 231 are connected by a flexible sleeve 232. The surface of the wire bundles 231 is provided with perforations for the wire core 1 to pass through. The wire bundles 231 are used to fix the wire core 1. The two flat sections 211 are configured to bend towards each other. At this time, the wire core 1 at the position of the flexible sleeve 232 bends with the bending angle. The flexible sleeve 232 can prevent the bending amplitude of the wire core 1 from being too large, and also plays the role of an outer layer of protection, thereby effectively preventing the wire core 1 from being bent with high intensity, and also preventing the wire core 1 from being directly exposed after the wrapping layer 21 of the bent section 212 of the wire core 1 is damaged.
[0039] The distance between the two wire bundles 231 is L1, and the length of the wire core 1 inside the flexible sleeve 232 is L2, where L1 < L2. The effect of this design is to allow the wire core 1 to be bent and set inside the flexible sleeve 232, so that when the flexible sleeve 232 is fully unfolded, the wire core 1 is not in a taut state, effectively relieving surface fatigue when bending and then straightening.
[0040] The following describes the composition and structure of the flexible sleeve 232. The flexible sleeve 232 is double-conical, and its diameter gradually increases from the middle position to both ends. The flexible sleeve 232 has an outer concave surface 233, which is suitable for buffering the bending stress on the surface of the wire core 1. The outer concave surface 233 can prevent excessive surface stretching and compression during bending, thus reducing the bending stress on the surface of the wire core 1. In addition, the flexible sleeve 232 has an inner convex surface 234, which is suitable for squeezing the core 1 towards its centerline, so that the core 1 is arc-shaped to prevent the core 1 from straightening. The inner convex surface 234 can make the core 1 inside the inner convex surface 234 bend, effectively preventing the core 1 from straightening when the flexible sleeve 232 is straight. Therefore, with the outer concave surface 233 and the inner convex surface 234 working together, not only is the bending amplitude of the core 1 too large and the surface stress too strong during the bending process avoided, but the core 1 is also prevented from straightening after bending. This effectively solves the phenomenon of straightening after high-frequency bending, enhances the fatigue strength of the core 1 at the bending section 212, and avoids the phenomenon of the core 1 being exposed at this position, effectively solving various safety hazards caused by the exposure of the core 1.
[0041] Some embodiments provide a wire harness with a plurality of wire cores 1 having a wrapping layer 21 on its surface. The wrapping layer 21 has flat sections 211 and bent sections 212 disposed between adjacent flat sections 211. The wrapping layer 21 includes: a wire positioning member 22 adapted to snap the flat sections 211 onto a mounting surface; and a binding member 23 disposed on the inner surface of the bent sections 212. The two flat sections 211 are configured to bend toward each other, and the binding member 23 is squeezed to reduce the bending stress on the surface of the wire cores 1.
[0042] The binding element 23 includes a pair of wire bundles 231, which are adapted to be fitted onto the wire core 1. The two wire bundles 231 are connected by a flexible sleeve 232. The surface of the wire bundles 231 is provided with perforations for the wire core 1 to pass through. The wire bundles 231 are used to fix the wire core 1. The two flat sections 211 are configured to bend towards each other. At this time, the wire core 1 at the position of the flexible sleeve 232 bends with the bending angle. The flexible sleeve 232 can prevent the bending amplitude of the wire core 1 from being too large, and also plays the role of an outer layer of protection, thereby effectively preventing the wire core 1 from being bent with high intensity, and also preventing the wire core 1 from being directly exposed after the wrapping layer 21 of the bent section 212 of the wire core 1 is damaged.
[0043] The distance between the two wire bundles 231 is L1, and the length of the wire core 1 inside the flexible sleeve 232 is L2, where L1 < L2. The effect of this design is to allow the wire core 1 to be bent and set inside the flexible sleeve 232, so that when the flexible sleeve 232 is fully unfolded, the wire core 1 is not in a taut state, effectively relieving surface fatigue when bending and then straightening.
[0044] The following describes the composition and structure of the flexible sleeve 232. The flexible sleeve 232 is double-conical, and its diameter gradually increases from the middle position to both ends. The flexible sleeve 232 has an outer concave surface 233, which is suitable for buffering the bending stress on the surface of the wire core 1. The outer concave surface 233 can prevent excessive surface stretching and compression during bending, thus reducing the bending stress on the surface of the wire core 1. In addition, the flexible sleeve 232 has an inner convex surface 234, which is suitable for squeezing the core 1 towards its centerline, so that the core 1 is arc-shaped to prevent the core 1 from straightening. The inner convex surface 234 can make the core 1 inside the inner convex surface 234 bend, effectively preventing the core 1 from straightening when the flexible sleeve 232 is straight. Therefore, with the outer concave surface 233 and the inner convex surface 234 working together, not only is the bending amplitude of the core 1 too large and the surface stress too strong during the bending process avoided, but the core 1 is also prevented from straightening after bending. This effectively solves the phenomenon of straightening after high-frequency bending, enhances the fatigue strength of the core 1 at the bending section 212, and avoids the phenomenon of the core 1 being exposed at this position, effectively solving various safety hazards caused by the exposure of the core 1.
[0045] In summary, by installing the flat section 211 on two movable assembly surfaces using the cable positioning component 22, and placing the bending section 212 in the movable area, the cable tie 23 and cable reel 231 in the bending section 212 gather the wire cores, reducing the range of movement between the wire cores 1 during bending, thereby reducing wear. In addition, the flexible sleeve 232 wraps around the wire cores 1 in the bending section 212, reducing the concentrated stress on the wire cores 1 during bending, thereby achieving the effect of protecting the wire cores 1 at the bending point.
[0046] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0047] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as the second element, component, region, layer, or segment.
[0048] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.
Claims
1. A wire sleeve, characterized in that, include: The wrapping layer (21) has a flat section (211) and a bent section (212) disposed between adjacent flat sections (211). Cable positioning component (22), which is suitable for clamping the flat section (211) onto the assembly surface; The binding element (23) is disposed on the inner surface of the bent section (212); The binding element (23) includes a pair of wire coils (231) adapted to be fitted onto the wire core (1), and the two wire coils (231) are connected by a flexible sleeve (232); Among them, the two flat sections (211) are configured to bend in opposite directions.
2. The wire sleeve as described in claim 1, characterized in that, The distance between the two wire bundles (231) is L1, and the length of the inner wire core (1) of the flexible sleeve (232) is L2, where L1 < L2.
3. The wire sleeve as described in claim 1, characterized in that, The flexible sleeve (232) is double-conical, and its diameter gradually increases from the middle position to both ends.
4. The wire sleeve as described in claim 3, characterized in that, The flexible sleeve (232) has an outer concave surface (233) which is suitable for buffering the bending stress on the surface of the core (1).
5. The wire sleeve as described in claim 4, characterized in that, The flexible sleeve (232) has an inner convex surface (234) which is adapted to press the core (1) toward its centerline so that the core (1) is arc-shaped to prevent the core (1) from straightening.
6. A wire harness, characterized in that, Multiple wire cores (1) have a sheath (21) on their surface. The sheath (21) has a flat section (211) and a bent section (212) between adjacent flat sections (211). The wrapping layer (21) includes: Cable positioning component (22), which is suitable for clamping the flat section (211) onto the assembly surface; The binding element (23) is disposed on the inner surface of the bent section (212); Among them, the two flat sections (211) are configured to bend in opposite directions to compress the binding (23) to reduce the bending stress on the surface of the core (1).
7. The wire harness as described in claim 6, characterized in that, The binding element (23) includes a pair of wire coils (231) adapted to be fitted onto the wire core (1), and the two wire coils (231) are connected by a flexible sleeve (232); Among them, the two flat sections (211) are configured to bend in opposite directions to compress the flexible sleeve (232) to reduce the bending stress on the surface of the core (1).
8. The wire harness as described in claim 7, characterized in that, The distance between the two wire bundles (231) is L1, and the length of the inner core (1) of the flexible sleeve (232) is L2, where L1 < L2.
9. The wire harness as described in claim 7, characterized in that, The flexible sleeve (232) is double-conical, and its diameter gradually increases from the middle position to both ends.
10. The wire harness as described in claim 9, characterized in that, The flexible sleeve (232) has an outer concave surface (233), which is suitable for buffering the bending stress on the surface of the core (1); The flexible sleeve (232) also has an inner convex surface (234) which is adapted to press the core (1) toward its centerline so that the core (1) is arc-shaped to prevent the core (1) from straightening.