A double-sided sheath design ultra-fine pitch FPC cable structure

Abstract

This utility model relates to the field of FPC cable technology and discloses an ultra-fine pitch FPC cable structure with a double-sided sheath design. It includes an FPC cable body, with a first connector at one end and a second connector at the other end. The cable also includes: copper foil conductors; multiple copper foil conductors arranged inside the FPC cable body, with a spacing ≤25μm between the conductors; an inner sheath layer and an outer sheath layer; the inner sheath layer wraps around the copper foil conductors, and the outer sheath layer wraps around the inner sheath layer; one side of the inner sheath layer is filled with multiple evenly distributed aramid fiber ropes. The advantages of this utility model compared to existing technologies are: it provides an ultra-fine pitch FPC cable structure with a double-sided sheath design, offering double-layer protection, good protective effect, and increased tensile strength and service life of the cable.

Description

Technical Field

[0001] This utility model relates to the field of FPC cable technology, specifically to an ultra-fine pitch FPC cable structure with a double-sided sheath design. Background Technology

[0002] FPC cables are a type of flexible circuit connection that uses a flexible insulating substrate as a carrier, forms circuit patterns on the conductor layer (usually copper foil) through an etching process, and covers it with an insulating protective layer. Its core function is to achieve efficient transmission of signals inside electronic devices, while also adapting to complex spatial layout requirements through its flexibility.

[0003] Traditional FPC cables lack overall mechanical protection during use. The single-layer sheath structure cannot balance tensile strength and flexibility, resulting in insufficient protection. This makes the cables prone to breakage when frequently bent, affecting their normal use. Utility Model Content

[0004] I. Technical problems to be solved

[0005] The technical problem to be solved by this utility model is to overcome the above-mentioned technical difficulties and provide an ultra-fine pitch FPC cable structure with double-sided sheath design. The double-layer protection has a good protective effect and also improves the tensile strength of the cable and extends its service life.

[0006] II. Technical Solution

[0007] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a double-sheathed ultra-fine pitch FPC cable structure, including an FPC cable body, one end of the FPC cable body is provided with a first connector, and the other end of the FPC cable body is provided with a second connector, and further includes:

[0008] Copper foil conductors; multiple copper foil conductors are installed inside the FPC cable body, and the spacing between the copper foil conductors is ≤25μm;

[0009] The inner sheath layer and the outer sheath layer; the inner sheath layer wraps around the outside of the copper foil conductor, and the outer sheath layer wraps around the outside of the inner sheath layer. One side of the inner sheath layer is filled with multiple evenly distributed aramid fiber ropes.

[0010] As an improvement, the inner sheath layer is made of graphene, and the side of the inner sheath layer that contacts the copper foil conductor is covered with epoxy resin adhesive.

[0011] As an improvement, the outer sheath layer is made of polyimide film with a thickness of 25 μm.

[0012] As an improvement, multiple uniformly distributed micro-grooves are provided on the contact surfaces of the inner sheath layer and the copper foil conductor, and the depth of the micro-grooves is ≤10μm.

[0013] As an improvement, the surface of the outer sheath is coated with a flame-retardant coating, and the thickness of the flame-retardant coating is ≤10μm.

[0014] III. Beneficial Effects

[0015] The advantages of this utility model compared with the prior art are as follows:

[0016] 1. With an inner and outer sheath, it provides double protection and has a good protective effect. The inner sheath is made of graphene and the outer sheath is made of polyimide film, which improves tensile strength and enhances heat dissipation.

[0017] 2. By using aramid fiber ropes and micro-grooves, the stress concentration during bending is reduced and the stress is dispersed, which can at the same time improve the tensile strength of the cable and extend its service life. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of an ultra-fine pitch FPC cable structure with a double-sided sheath design according to this utility model.

[0019] Figure 2 This is a cross-sectional view of an ultra-fine pitch FPC cable structure with a double-sided sheath design according to this utility model.

[0020] As shown in the figure: 1. FPC cable body; 2. First connector; 3. Second connector; 4. Copper foil conductor; 5. Inner sheath layer; 6. Outer sheath layer; 7. Aramid fiber rope; 8. Flame retardant coating; 9. Micro groove. Detailed Implementation

[0021] In the description of this utility model, it should be understood that the terms "center," "lateral," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, 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, the terms "first" and "second" are used 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" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Additionally, the term "comprising" and any variations thereof are intended to cover non-exclusive inclusion.

[0022] The present invention will now be described in further detail with reference to the accompanying drawings.

[0023] To achieve ultra-fine pitch wiring, combined with... Figure 1 and attached Figure 2 An ultra-fine pitch FPC cable structure with a double-sided sheath design includes an FPC cable body 1, one end of which is provided with a first connector 2 and the other end of which is provided with a second connector 3. It also includes copper foil conductors 4. Multiple copper foil conductors 4 are arranged inside the FPC cable body 1, and the spacing between the copper foil conductors 4 is ≤25μm, thereby realizing ultra-fine pitch wiring.

[0024] To enhance the overall protective effect, combined with the attached Figure 2 The system consists of an inner sheath layer 5 and an outer sheath layer 6. The inner sheath layer 5 wraps around the copper foil conductor 4, and the outer sheath layer 6 wraps around the inner sheath layer 5. The inner sheath layer 5 is made of graphene, and the side of the inner sheath layer 5 that contacts the copper foil conductor 4 is coated with epoxy resin. The outer sheath layer 6 is made of polyimide film with a thickness of 25μm. The inner and outer sheath layers provide double protection, resulting in good protection. The graphene material of the inner sheath layer 5 enhances overall heat dissipation, while the polyimide film material of the outer sheath layer 6 improves overall tensile strength.

[0025] To improve tensile strength and extend service life, combined with... Figure 2 The inner sheath layer 5 is filled with multiple evenly distributed aramid fiber ropes 7 on one side. Multiple evenly distributed micro-grooves 9 are provided on the contact surface between the inner sheath layer 5 and the copper foil conductor 4, and the depth of the micro-grooves 9 is ≤10μm. The aramid fiber ropes 7 can improve the overall tensile strength of the cable, and with the assistance of the micro-grooves 9, reduce bending stress concentration, disperse stress, and extend service life.

[0026] To improve the overall flame retardant effect, combined with the attached Figure 2 The outer sheath layer 6 is coated with a flame-retardant coating 8, and the thickness of the flame-retardant coating 8 is ≤10μm, which improves the overall fire resistance level.

[0027] In specific implementation of this utility model:

[0028] First, multiple copper foil conductors 4 are installed inside the FPC cable body 1, and the spacing between the copper foil conductors 4 is ≤25μm, to achieve ultra-fine pitch wiring.

[0029] Next, the inner sheath layer 5 and the outer sheath layer 6 provide double protection with good protective effect. The inner sheath layer 5 is made of graphene, which enhances the overall heat dissipation effect, while the outer sheath layer 6 is made of polyimide film, which improves the overall tensile strength.

[0030] Then, the aramid fiber rope 7 can improve the overall tensile strength of the cable, and with the assistance of the micro groove 9, it can reduce bending stress concentration, disperse stress, and extend service life.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

[0032] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A double-jacket design ultra-fine pitch FPC cable structure, comprising an FPC cable body (1), one end of the FPC cable body (1) is provided with a first connector (2), the other end of the FPC cable body (1) is provided with a second connector (3), characterized in that, Also includes: Copper foil conductors (4); Multiple copper foil conductors (4) are installed inside the FPC cable body (1), and the spacing between the copper foil conductors (4) is ≤25μm; Inner sheath layer (5) and outer sheath layer (6); the inner sheath layer (5) wraps around the outside of the copper foil conductor (4), and the outer sheath layer (6) wraps around the outside of the inner sheath layer (5). One side of the inner sheath layer (5) is filled with multiple evenly distributed aramid fiber ropes (7).

2. The ultra-fine pitch FPC cable structure of claim 1, wherein: The inner sheath layer (5) is made of graphene, and the side of the inner sheath layer (5) that is in contact with the copper foil conductor (4) is provided with epoxy resin adhesive.

3. The ultra-fine pitch FPC cable structure of claim 1, wherein: The outer sheath layer (6) is made of polyimide film and has a thickness of 25 μm.

4. The ultra-fine pitch FPC cable structure of claim 1, wherein: The inner sheath layer (5) and the copper foil conductor (4) are provided with multiple uniformly distributed micro grooves (9), and the depth of the micro grooves (9) is ≤10μm.

5. The ultra-fine pitch FPC cable structure of a double-sided jacket design according to claim 1, characterized by: The outer sheath layer (6) is coated with a flame-retardant coating (8), and the thickness of the flame-retardant coating (8) is ≤10μm.

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