Flexible flat cable
By forming a flexible core with multiple conductors and an inner sheath in one piece, and then covering it with an outer sheath, the problem of existing signal transmission line products being heavy and difficult to bend is solved, achieving the effect of being lightweight, thin, easy to bend, and high-speed signal transmission.
Patent Information
- Application Number
- CN202422973906.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-03
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-12-03
AI Technical Summary
Existing signal transmission line products are inconvenient to use because the wires are thick and therefore stiff and difficult to bend.
The flexible flat cable is made of multiple conductors molded in one piece and an inner sheath to form a soft core, which is then covered with an outer sheath. The conductor material is made of foam material, etc., forming a flexible flat cable with an integrated structure.
It achieves overall flexibility, thinness, and easy bending of the flexible flat cable, making it easy to install and use, while also being able to transmit high-speed signals.
Smart Images
Figure CN223513674U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of signal transmission technology, and in particular to a flexible flat cable. Background Technology
[0002] Existing signal transmission line products generally consist of an outer sheath covering each signal line. Typically, there are two signal lines consisting of a conductor and insulation. The outer sheath generally comes in two forms: a film or an extruded plastic sheath.
[0003] However, the existing products produce thick wires that are stiff and difficult to bend, making them inconvenient to use. Utility Model Content
[0004] This application provides a flexible flat cable to solve the problem that existing flat cables are too stiff and difficult to bend due to their large thickness.
[0005] To solve the above-mentioned technical problems, one technical solution adopted in this application is to provide a flexible flat cable. The flexible flat cable includes an integrally formed core and an outer sheath layer disposed outside the core. The core includes multiple integrally formed conductors and an inner sheath layer covering the multiple conductors, and the multiple conductors are arranged at intervals.
[0006] In some embodiments, the plurality of conductors are integrally extruded with the material forming the inner sheath.
[0007] In some embodiments, the multiple conductors are divided into multiple groups of signal line pairs, and each group of signal line pairs includes a predetermined number of adjacent conductors, wherein the predetermined number is greater than or equal to 3.
[0008] In each group of signal line pairs, the two conductors on the outer side are used as ground lines, and the conductor in the middle is used as a signal line.
[0009] In some embodiments, two adjacent sets of signal line pairs share the same conductor as one of their ground wires.
[0010] In some embodiments, each of the signal line pairs has an inner insulating layer covering the conductor serving as the signal line, and the inner insulating layer is located within the inner sheath.
[0011] In some embodiments, each group of signal line pairs includes four adjacent conductors, with the two conductors in the middle of each group of signal line pairs serving as signal lines.
[0012] In some embodiments, the signal lines in each group of signal line pairs are arranged in rows, columns, or arrays.
[0013] In some embodiments, the outer sheath layer includes a shielding layer and an outer sheath layer disposed sequentially outside the inner sheath layer.
[0014] In some embodiments, the shielding layer is an overlay structure or a wrapping structure.
[0015] In some embodiments, the material of the inner liner includes a foamed material.
[0016] The beneficial effects of this application are as follows: Unlike the prior art, this application discloses a flexible flat cable. In the flexible flat cable provided by this application, multiple spaced conductors are integrally extruded with the inner sheath to form a core with an integral structure, and then covered with an outer sheath layer, making the entire flexible flat cable soft, thin, and easy to bend, which facilitates installation and use. The manufactured flexible flat cable can also transmit high-speed signals. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:
[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the flexible flat cable provided in this application;
[0019] Figure 2 This is a schematic diagram of another embodiment of the flexible flat cable provided in this application;
[0020] Figure 3 Is it like this? Figure 1 or Figure 2 A schematic diagram of another embodiment of the core wire in the flexible flat cable described herein. Detailed Implementation
[0021] 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 a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0022] The terms "first," "second," and "third" used in the embodiments of this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.
[0023] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0024] This application provides a flexible flat cable 100, see reference. Figure 1 , Figure 1 This is a schematic diagram of the structure of an embodiment of the flexible flat cable provided in this application.
[0025] The flexible flat cable 100 includes an integrally formed core 10 and an outer sheath layer 20 disposed outside the core 10. The core 10 is an integrally formed structure, which includes multiple integrally formed conductors 12 and an inner sheath layer 14 covering the multiple conductors 12. The multiple conductors 12 are arranged at intervals from each other.
[0026] In this embodiment, multiple conductors 12 spaced apart are arranged in a row and integrally formed with the inner sheath 14. The core 10 is pre-formed into an integral structure, and then the outer sheath 20 is wrapped around the inner sheath 14. In contrast, the inner sheath 14 in this application does not need to be pre-formed separately and then wrapped around each conductor 12. Instead, it is formed together with multiple conductors 12 to form an integral structure core 10, which makes the inner sheath 14 thinner and lighter. Therefore, the flexible flat cable 100 is significantly made soft, thin, and easy to bend, which facilitates installation and use.
[0027] Specifically, the multiple conductors 12 spaced apart are integrally extruded with the material forming the inner sheath 14.
[0028] The inner sheath 14 is made of a material with a low dielectric constant, including foaming materials, polytetrafluoroethylene, polystyrene, and silicone.
[0029] Specifically, the multiple conductors 12 are divided into multiple signal line pairs 120. Each signal line pair 120 includes a preset number of adjacent conductors, which is greater than or equal to 3. Among them, the two conductors on the outer side of each signal line pair 120 are ground lines 121, and the conductors on the middle side are signal lines 122.
[0030] For example, each pair of signal lines 120 includes three adjacent conductors, wherein the two conductors on the outer side of each pair of signal lines 120 serve as ground line 121, and the conductor on the middle side serves as signal line 122.
[0031] Alternatively, each signal line pair 120 may include four adjacent conductors, wherein the two conductors on the outer side of each signal line pair 120 serve as ground line 121, and the two conductors on the middle side serve as signal line 122.
[0032] Alternatively, each pair of signal lines 120 may consist of five adjacent conductors, wherein the two conductors on the outer side of each pair of signal lines 120 serve as ground lines 121, and the three conductors on the middle side serve as signal lines 122.
[0033] Each group of signal line pairs 120 includes the same number of conductors, which can be 3, 4, 5, 6, 7 or 8, and can be specifically defined according to requirements. This application does not impose any restrictions on this.
[0034] In some embodiments, such as Figure 1 As shown, the conductors included in each group of signal line pairs 120 do not share any conductors. For example, each group of signal line pairs 120 includes four independent adjacent conductors, and the number of conductors 12 in the core 10 is 16, so it can be divided into four groups of signal line pairs 120.
[0035] See Figure 2 , Figure 2 This is a schematic diagram of another embodiment of the flexible flat cable provided in this application. In some other embodiments, two adjacent signal line pairs 120 share the same conductor as one of the ground wires 121. For example, each group of signal line pairs 120 includes four adjacent conductors, and the number of conductors 12 in the core 10 is 16. Since two adjacent signal line pairs 120 share the same conductor as one of the ground wires 121, it can be divided into five groups of signal line pairs 120. Relatively speaking, with the total number of conductors remaining unchanged, the number of signal line pairs 120 that can be formed can be increased by 25%, thereby increasing the conductor utilization rate by 25%.
[0036] In some embodiments, such as Figure 1 or Figure 2 As shown, the conductor serving as signal line 122 is directly wrapped in the inner sheath 14.
[0037] See Figure 3 , Figure 3 Is it like this? Figure 1 or Figure 2 The diagram below shows a structural schematic of another embodiment of the core wire in the flexible flat cable described herein. In some other embodiments, each pair of signal wires 120, which serves as the conductor of the signal wire 122, is further covered with an inner insulation layer 123. The inner insulation layer 123 is located within the inner sheath 14 to provide electrical insulation to the signal wire 122 and prevent it from short-circuiting or leaking current.
[0038] Optionally, the signal lines 122 in each group of signal line pairs 120 can be arranged in rows, columns, or arrays. For example, if there are two or more signal lines 122 in each group of signal line pairs 120, they can be arranged in rows, columns, or arrays.
[0039] In this embodiment, the outer sheath layer 20 specifically includes a shielding layer and an outer sheath layer sequentially disposed outside the inner sheath layer 14. The shielding layer can be a mating structure or a wrapping structure.
[0040] In the flexible flat cable 100 provided in this application, multiple conductors 12 spaced apart are integrally extruded with the inner sheath 14 to form a core 10 with an integral structure. Then, an outer sheath 20 composed of a shielding layer and an outer sheath is wrapped around it, making the flexible flat cable 100 soft, thin and easy to bend, which is convenient for installation and use. The flexible flat cable 100 can also transmit high-speed signals.
[0041] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.
Claims
1. A flexible flat cable, characterized in that, The flexible flat cable includes an integrally formed core and an outer sheath layer disposed outside the core. The core includes multiple integrally formed conductors and an inner sheath layer covering the multiple conductors, with the multiple conductors spaced apart from each other.
2. The flexible flat cable according to claim 1, characterized in that, The multiple conductors are integrally extruded with the material forming the inner sheath.
3. The flexible flat cable according to claim 1, characterized in that, The multiple conductors are divided into multiple groups of signal line pairs, and each group of signal line pairs includes an adjacent preset number of conductors, the preset number being greater than or equal to 3; In each group of signal line pairs, the two conductors on the outer side are used as ground lines, and the conductor in the middle is used as a signal line.
4. The flexible flat cable according to claim 3, characterized in that, The two adjacent sets of signal line pairs share the same conductor as one of their ground wires.
5. The flexible flat cable according to claim 3 or 4, characterized in that, Each signal line pair has an inner insulating layer covering the conductor that serves as the signal line, and the inner insulating layer is located within the inner sheath layer.
6. The flexible flat cable according to claim 3, characterized in that, Each group of signal line pairs includes four adjacent conductors, with the two conductors in the middle of each group of signal line pairs serving as signal lines.
7. The flexible flat cable according to claim 3, characterized in that, The signal lines in each group of signal line pairs are arranged in rows, columns, or arrays.
8. The flexible flat cable according to claim 1, characterized in that, The outer sheath layer includes a shielding layer and an outer sheath layer disposed sequentially outside the inner sheath layer.
9. The flexible flat cable according to claim 8, characterized in that, The shielding layer is either a pasted structure or a wrapping structure.
10. The flexible flat cable according to claim 1, characterized in that, The inner liner is made of foam material.