Flat cable capable of adjusting length difference between inner diameter and outer diameter
By transforming flat wires into bundles of electronic wires and forming a spring structure, the problem of the difference in inner and outer diameter lengths when bending flat cables is solved, enabling flexible bending of cables and preventing deformation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 嘉基电子科技(苏州)有限公司
- Filing Date
- 2025-05-07
- Publication Date
- 2026-05-08
AI Technical Summary
When flat cables are bent, the difference in length between their inner and outer diameters causes deformation, making bending difficult or damaging the cables.
The flat wire body is transformed into an electronic wire bundle, forming a spring structure. The electronic wire bundle spirals around the flat wire body, adjusting the difference in length between the inner and outer diameters. The difference in length between the inner and outer diameters is adjusted by the sliding of the electronic wire bundle.
It effectively reduces the difference in inner and outer diameter lengths when flat cables are bent, avoiding cable deformation and damage, and improving bending flexibility.
Smart Images
Figure CN224217260U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a flat cable, and more particularly to a flat cable with an adjustable inner and outer diameter length difference. Background Technology
[0002] Flat ribbon cables are made by bonding flat, flexible conductors with a thin, flexible adhesive or paper film at high temperatures. Flat ribbon cables offer advantages such as flexibility, thinness, small size, simple connection, easy disassembly, and easy resolution of electromagnetic interference (EMI). Flat cables typically consist of two flat ribbon cables, one for transmitting and one for receiving signals.
[0003] However, when flat cables are bent, the outer coils are stretched longer, while the inner coils are compressed and deformed. This can cause difficulty in bending or partial deformation, leading to cable damage. While this problem also occurs in general cables, it is more pronounced in flat cables. Utility Model Content
[0004] The purpose of this invention is to solve the problem of existing flat cables and propose a flat cable with adjustable inner and outer diameter length difference.
[0005] To achieve the above and other objectives, this utility model proposes a flat cable with adjustable inner and outer diameter length difference, comprising: a flat cable body, including a flat insulating layer and multiple signal lines embedded in the insulating layer; and an electronic wire bundle, including multiple electronic wires, the length of which is longer than the length of the flat cable body, the electronic wire bundle spirally wrapping around the flat cable body to form a spring structure, and the two ends of the electronic wire bundle being electrically connected to the two ends of the flat cable body respectively.
[0006] Optionally, the flat wire has a first outer surface and a second outer surface that are opposite to each other, and the two ends of the electron wire bundle are electrically connected to the first outer surface, respectively.
[0007] Optionally, the bundle of electronic wires forming the spiral of the spring structure can slide along the extension direction of the flat wire.
[0008] Optionally, the length of the electron wire bundle is longer than the length required to most tightly wrap around the flat wire.
[0009] Therefore, the adjustable inner and outer diameter length difference flat cable of this utility model transforms one of the flat cables into an electronic wire bundle, and the electronic wire bundle is wound around another flat cable to form a spring-like mechanism. The spiral electronic wire bundle can compensate for the length difference when bending, thus eliminating the deformation effect caused by the inner and outer diameter length difference when bending traditional double-layer flat cables.
[0010] To further understand the features and technical content of this utility model, please refer to the following detailed description and drawings. However, this description and drawings are only used to illustrate this utility model and are not intended to limit the scope of this utility model in any way. Attached Figure Description
[0011] Figure 1 This is a top view of a flat cable with adjustable inner and outer diameter length difference according to an embodiment of the present invention.
[0012] Figure 2 A bottom view of a flat cable with adjustable inner and outer diameter length difference according to an embodiment of the present invention;
[0013] Figure 3 This is a schematic diagram of the bending of a flat cable with adjustable inner and outer diameter length difference according to an embodiment of the present invention.
[0014] Figure Labels
[0015] 100 Flat cable with adjustable inner and outer diameter length difference
[0016] 1. Flat line body
[0017] 11 Insulation layer
[0018] 12 signal lines
[0019] 13 First outer surface
[0020] 14 Second outer surface
[0021] 2. Electron wire bundle
[0022] 21 electron beams
[0023] Section A
[0024] Section B
[0025] Section C Detailed Implementation
[0026] To fully understand this utility model, the following specific embodiments, in conjunction with the accompanying drawings, will provide a detailed description. Those skilled in the art can understand the purpose, features, and effects of this utility model from the content disclosed in this specification. It should be noted that this utility model can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed based on different viewpoints and applications without departing from the inventive point of this utility model. Furthermore, the accompanying drawings of this utility model are for simple illustration only and are not depictions based on actual dimensions. The following embodiments will further describe the relevant technical content of this utility model in detail, but the disclosed content is not intended to limit the claims of this utility model. The explanation is as follows:
[0027] like Figure 1 and Figure 2 As shown, the adjustable inner and outer diameter length difference flat cable 100 of this utility model embodiment includes: a flat cable body 1 and an electronic wire bundle 2.
[0028] The flat cable 1 includes a flat insulating layer 11 and multiple signal lines 12 embedded in the insulating layer 11. The multiple signal lines 12 are arranged parallel to each other and are made of conductors used to transmit electrical signals. They can be made of copper, silver, aluminum, or other metals and alloys, with materials having good conductivity and ductility being preferred. The insulating layer 11 covers the multiple signal lines 12 from both the top and bottom. The insulating layer 11 can be divided into upper and lower layers, sandwiched between the upper and lower sides of the signal lines 12 to completely cover them. The insulating layer 11 is an insulator and can also be called a dielectric layer or an insulating outer layer. The insulating layer 11 can be made of any insulating and flexible material, such as insulating plastic.
[0029] The electronic wire bundle 2 includes multiple electronic wires 21, which are, for example, metal wires with a cladding or sheathing layer. These electronic wires 21 are essentially non-braided bundles, generally arranged in parallel, but may also be slightly twisted or reversed. The multiple signal lines 12 of the flat wire body 1 and the multiple electronic wires 21 of the electronic wire bundle 2 can be used to receive and transmit electrical signals, respectively. The length of these multiple electronic wires 21 is longer than the length of the flat wire body 1. The electronic wire bundle 2 spirally wraps around the flat wire body 1 to form a spring structure, and the two ends of the electronic wire bundle 2 are electrically connected to the two ends of the flat wire body 1. In this embodiment, the spiral direction of the electronic wire bundle 2 is unidirectional, but the invention is not limited to this. In other embodiments, spring structures with different spiral directions may be formed around the two ends of the flat wire body 1, or multiple spiral structures with different directions may be interlaced on the surface of the flat wire body 1.
[0030] In this embodiment, the flat wire 1 has a first outer surface 13 and a second outer surface 14 that are opposite to each other, and the two ends of the electron wire bundle 2 are electrically connected to the first outer surface 13 respectively. However, the present invention is not limited to this. In other embodiments, the two ends of the electron wire bundle 2 may be electrically connected to the first outer surface 13 and the second outer surface 14 respectively, that is, the endpoints of the electron wire bundle 2 are not on the same outer surface.
[0031] The following will explain how the adjustable inner and outer diameter length difference of the flat cable 100 of this invention is adjusted. See [link / reference] Figure 3 When the flat wire 1 bends towards the first outer surface 13, the electron wire bundles 2 of the left and right A and C sections are located in the inner circle, while the electron wire bundles 2 of the middle B section are located in the outer circle. Because the electron wire bundles 2 of the A and C sections are located in the inner circle, their required distance is shorter, and the excess length has room to move towards the middle B section (as shown by the arrow). Meanwhile, the electron wire bundles 2 of the middle B section are located in the outer circle, and their required distance is longer, just enough to absorb the length pushed over by the A and C sections.
[0032] Conversely, when the flat wire 1 bends toward the second outer surface 14, the movement of the electron wire bundles 2 in the aforementioned sections reverses. Therefore, the mechanism of the spring structure formed by the electron wire bundles 21 can eliminate the deformation effect caused by the difference in inner and outer diameters during bending of traditional double-layer flat cables.
[0033] In other words, the adjustable inner and outer diameter length difference flat cable 100 of this utility model transforms one of the flat cables into an electronic wire bundle 2, and the electronic wire bundle 2 wraps around another flat cable (flat cable body 1) to form a spring structure. The electronic wire bundle 2 forming the spring structure can slide along the extension direction of the flat cable body 1. The more spirals the electronic wire bundle 2 has around the flat cable body 1 per unit length, the more sections with a difference in inner and outer diameter length that can be finely adjusted during bending. However, the required length of the electronic wire bundle 2 is also longer, and disadvantages such as cost and resistance will also increase.
[0034] To effectively adjust the difference in inner and outer diameter lengths during bending, the electron wire bundle 2 is preferably wrapped around the flat wire body 1 in a loose manner. Here, "loose" means that there is a certain gap between the electron wire bundle 2 and the flat wire body 1. In this case, the length of the electron wire bundle 2 is longer than the length required for the tightest wrapping (without gap between the electron wire bundle 2 and the flat wire body 1) of the flat wire body 1.
[0035] This utility model has been disclosed above with reference to preferred embodiments. However, those skilled in the art should understand that the embodiments described are merely for illustrating the utility model and should not be construed as limiting its scope. It should be noted that all variations and substitutions equivalent to the described embodiments should be included within the scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.
Claims
1. A flat cable with adjustable inner and outer diameter length difference, characterized in that, The adjustable flat cable with adjustable inner and outer diameter length difference includes: A flat cable body, comprising a flat insulating layer and a plurality of signal lines embedded in the insulating layer; and An electron wire bundle includes multiple electron wires, the length of which is longer than the length of the flat wire body. The electron wire bundle spirals around the flat wire body to form a spring structure, and the two ends of the electron wire bundle are electrically connected to the two ends of the flat wire body, respectively.
2. The flat cable with adjustable inner and outer diameter length difference according to claim 1, characterized in that, The flat wire has a first outer surface and a second outer surface that are opposite to each other, and the two ends of the electron wire bundle are electrically connected to the first outer surface, respectively.
3. The flat cable with adjustable inner and outer diameter length difference according to claim 1, characterized in that, The bundle of electronic wires forming the spring structure can slide along the extension direction of the flat wire.
4. The flat cable with adjustable inner and outer diameter length difference according to claim 1, characterized in that, The length of the electron wire bundle is longer than the length required to most tightly wrap around the flat wire.