FFC (flexible flat cable) easy to arrange and resistant to distortion

Abstract

The utility model discloses a flexible flat cable (FFC) easy to arrange and resistant to twisting, which relates to the technical field of FFCs and comprises a flat cable body, a protective sleeve is sleeved in the middle of the flat cable body, heat shrink tubes for fixing are arranged at the left end and the right end of the protective sleeve, the protective sleeve is made of wear-resistant polyurethane, and the protective sleeve is arranged at the friction position of the flat cable body. A plurality of grooves are formed in the upper end and the lower end of the protective sleeve, the grooves are uniformly arranged, wiring terminals are welded to the left end and the right end of the flat cable body, the outer side of a wire layer in the flat cable body is wrapped with an insulating layer, and the insulating layer is arranged on the outer side of the wire layer in the flat cable body. The shielding layer is used for shielding electromagnetic interference and wraps the outer side of the insulating layer, the protection layer is used for protecting the internal structure and wraps the outer side of the shielding layer, the abrasion resistance of the flat cable body is improved, and the multiple tensile fibers are arranged in the protection layer, so that the tensile capacity of the flat cable body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of FFC cables, in particular to an FFC cable that is easy to arrange and resistant to twisting. Background Art

[0002] FFC cable is a flexible flat cable with arbitrary conductor number and spacing. Because it is soft and easy to bend, it makes wiring more convenient, greatly reducing the size of electronic products, reducing production costs, and improving the production efficiency of electronic equipment. It is suitable for use as a data transmission cable between mobile components and motherboards, between PCB boards, and in miniaturized electrical equipment.

[0003] In some devices, the cable may need to be frequently moved, bent or flexed. For example, in printers, scanners, robots and other devices, these movements may cause the cable to twist or even bend, resulting in friction and wear between the internal conductor and the insulation layer of the cable. The internal conductor may be at risk of breaking, reducing the service life of the cable and causing equipment failure. Therefore, an easy-to-arrange and twist-resistant FFC cable is proposed to solve the problem that the FFC cable is easily damaged and has performance degradation due to bending and twisting during use. Utility Model Content

[0004] In order to solve the problems raised in the above background technology, an FFC cable that is easy to arrange and resistant to twisting is provided.

[0005] In order to achieve the above purpose, the technical solution adopted by this utility model is:

[0006] An easy-to-arrange and twist-resistant FFC cable comprises a cable body, a protective cover is provided in the middle of the cable body for protecting the cable, a plurality of grooves are provided at the upper and lower ends of the protective cover, and the grooves are evenly arranged. The left and right ends of the cable body are connected to terminal blocks.

[0007] Among them, the cable body includes a conductor layer, an insulating layer, a shielding layer and a protective layer. The outer side of the conductor layer is covered with an insulating layer. The shielding layer is used to shield electromagnetic interference and is covered on the outer side of the insulating layer. The protective layer is used to protect the internal structure and is covered on the outer side of the shielding layer.

[0008] Preferably, a plurality of tensile strength fibers are provided inside the protective layer, the tensile strength fibers are evenly arranged along the periphery of the shielding layer, and the tensile strength fibers are arranged in parallel along the length direction of the cable body.

[0009] Preferably, the conductor layer corresponds to the gold fingers provided on the connection terminal.

[0010] Preferably, both left and right ends of the protective sleeve are provided with heat shrink tubes for fixation, and the protective sleeve is made of wear-resistant polyurethane.

[0011] Preferably, the shielding layer is made of aluminum foil.

[0012] Preferably, the protective layer is made of polyester film.

[0013] Preferably, the tensile-resistant fiber yarn is made of aramid fiber.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. A protective cover is installed on the outside of the cable body. The cover is made of wear-resistant polyurethane. Polyurethane has excellent elasticity, wear resistance, and chemical resistance. When the cable body is connected to a moving part, it is often twisted and stretched due to pulling, and rubbed against the outer wall of the moving mechanism. After long-term use, the internal wires will be damaged. The protective cover is installed on the friction-prone part of the cable body to protect the cable and prevent damage to the cable due to friction, which may cause equipment malfunction.

[0016] 2. A protective layer is provided inside the cable body. Inside the protective layer are several tensile-resistant fibers arranged parallel to the length of the cable body. The protective layer is made of polyester film, which has good wear resistance and flexibility, thereby improving the wear resistance of the cable. The tensile-resistant fibers are made of aramid fiber, which has strong tensile strength and protects the cable body from damage during twisting and stretching. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of an embodiment of the present utility model;

[0019] Figure 3 It is a schematic diagram of the internal structure of the utility model.

[0020] The numbers in the figure are:

[0021] 1. Cable body; 11. Conductor layer; 12. Insulation layer; 13. Shielding layer; 14. Protective layer; 15. Tensile strength fiber; 2. Protective cover; 21. Grooving; 3. Terminal block; 4. Heat shrink tubing. DETAILED DESCRIPTION

[0022] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are merely examples, and those skilled in the art may conceive of other obvious variations.

[0023] like Figure 1-3As shown, an easy-to-arrange and twist-resistant FFC cable includes a cable body 1. The middle part of the cable body 1 is provided with a protective cover 2 for protecting the cable. The protective cover 2 is made of wear-resistant polyurethane. The polyurethane material has excellent elasticity, wear resistance and chemical resistance. When the cable body 1 is connected to a moving part, the cable body 1 often rubs against the outer wall of the moving mechanism. After long-term use, it will cause damage to the internal wires and affect the normal operation of the equipment. The protective cover 2 can be placed at the friction position of the cable body 1 to protect the cable body 1. Heat shrink tubes 4 are provided at both ends of the protective cover 2 for protection. When exposed to high temperature, the heat shrink tube 4 will shrink to fix the protective cover 2 to the cable body 1. The protective cover 2 is not easy to move on the cable body 1 and always protects the friction-prone position.

[0024] Among them, the cable body 1 includes a wire layer 11, an insulating layer 12, a shielding layer 13 and a protective layer 14. The outer side of the wire layer 11 is covered with the insulating layer 12. The shielding layer 13 is used to shield electromagnetic interference and is covered on the outer side of the insulating layer 12. The protective layer 14 is used to protect the internal structure and is covered on the outer side of the shielding layer 13. The material of the wire layer 11 is copper. The wire layer 11 is provided with multiple wires and corresponds to the gold fingers provided on the terminal 3. The insulating layer 12 is made of polyimide film and has extremely high insulation performance. The shielding layer 13 is made of aluminum foil, which is covered on the outer side of the insulating layer 12 to reduce the electromagnetic interference of the external environment on the wire layer 11. The protective layer 14 is made of polyester film. The polyester film has good wear resistance and flexibility, and protects the internal wire layer 11.

[0025] Reference Figure 2 As shown, the upper and lower ends of the protective cover 2 are provided with a plurality of grooves 21, and the grooves 21 are evenly arranged. The arrangement of the grooves 21 facilitates the bending of the protective cover 2. When the cable body 1 needs to be bent during connection, the protective cover 2 is placed in the bending position. The bending of the protective cover 2 will form an arc-shaped space. The internal cable body 1 will have a certain curvature when bent, and the internal wires will not be broken due to excessive bending angles. The left and right ends of the cable body 1 are connected to terminal blocks 3 for connection.

[0026] A plurality of tensile strength fibers 15 are provided inside the protective layer 14. The tensile strength fibers 15 are evenly arranged along the periphery of the shielding layer 13. The tensile strength fibers 15 are arranged parallel to the length direction of the cable body 1. The tensile strength fibers 15 are made of aramid fibers, which have high strength and insulation properties. The tensile strength fibers 15 are arranged in the protective layer 14, which enhances the tensile strength of the protective layer 14 and protects the cable body 1 from damage during the twisting process.

[0027] The principle of the present invention is as follows: when installing the cable body 1, first connect the terminal 3 on one side to the device interface, then put the protective cover 2 into the cable body 1, place the protective cover 2 at the contact point between the cable body 1 and the side wall of the device or at the bend of the cable body 1, put the heat shrink tube 4 on both sides of the protective cover 2, use a hot air gun to heat the heat shrink tube 4, the heat shrink tube 4 shrinks and fits tightly against the protective cover 2 and the surface of the cable body 1 to fix the protective cover 2, the protective cover 2 protects the cable body 1, and prevents the cable body 1 from twisting and rubbing against the device during movement, causing damage to the cable body 1 and affecting the operation of the device. At the same time, the internal wire layer 11 is protected by providing the insulating layer 12, the shielding layer 13 and the protective layer 14 to prevent electromagnetic interference, external wear and stretching from damaging the wire layer 11.

[0028] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and improvements are possible without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed for the present invention is defined by the appended claims and their equivalents.

Claims

1. An easy-to-arrange and twist-resistant FFC cable, characterized by: The cable body (1) comprises a protective cover (2) for protecting the cable, the middle of the cable body (1) is provided with a plurality of grooves (21) at both upper and lower ends of the protective cover (2), and the grooves (21) are evenly arranged. The left and right ends of the cable body (1) are connected to connection terminals (3). The cable body (1) comprises a conductor layer (11), an insulating layer (12), a shielding layer (13) and a protective layer (14); the outer side of the conductor layer (11) is covered with the insulating layer (12); the shielding layer (13) is used for shielding electromagnetic interference and is covered on the outer side of the insulating layer (12); and the protective layer (14) is used for protecting the internal structure and is covered on the outer side of the shielding layer (13).

2. The easy-to-arrange and twist-resistant FFC cable according to claim 1, characterized in that: A plurality of tensile strength fibers (15) are arranged inside the protective layer (14), the tensile strength fibers (15) are evenly arranged along the periphery of the shielding layer (13), and the tensile strength fibers (15) are arranged in parallel along the length direction of the cable body (1).

3. The easy-to-arrange and twist-resistant FFC cable according to claim 1, characterized in that: The conductor layer (11) corresponds to the gold fingers provided on the connection terminal (3).

4. The easy-to-arrange and twist-resistant FFC cable according to claim 1, characterized in that: Both left and right ends of the protective sleeve (2) are provided with heat shrink tubes (4) for fixing, and the protective sleeve (2) is made of wear-resistant polyurethane.

5. The easy-to-arrange and twist-resistant FFC cable according to claim 1, characterized in that: The shielding layer (13) is made of aluminum foil.

6. The easy-to-arrange and twist-resistant FFC cable according to claim 1, characterized in that: The protective layer (14) is made of polyester film.

7. The easy-to-arrange and twist-resistant FFC cable according to claim 2, characterized in that: The tensile-resistant fiber (15) is made of aramid fiber.

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