A flexible flat cable

Abstract

The utility model relates to cable technical field, and disclose an easy bending type flat cable, including conductor layer, the outside fixed mounting of conductor layer has insulating buffer layer, the outside fixed mounting of insulating buffer layer has silver plated copper braid, the inside of insulating buffer layer evenly distributed has a plurality of micro air cavity, the outside fixed mounting of silver plated copper braid has aluminium -plastic composite tape. The easy bending type flat cable, the conductor layer adopts the silver plated copper conductor of multiple twisted formation conductor beam, cooperates the flexible isolation strip of silicone rubber material, both strengthen the flexibility of conductor itself, and provide sufficient space for the deformation when bending, avoid the conductor and break because of extrusion, the micro air cavity in insulating buffer layer and foamed polypropylene material can absorb stress through compression and spring back when bending, the decompression groove of outer sheath and silicone grease reduce the surface friction and tension when bending, and multiple structures cooperate to make the cable can bear high frequency bending and not easily damaged, greatly prolong the service life.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, specifically to an easily bendable flat cable. Background Technology

[0002] With the rapid development of intelligent equipment, the internal structure of the equipment is becoming increasingly compact, which places higher demands on the flexibility and spatial adaptability of the connecting cables.

[0003] The prior art CN218241348U describes an easily bendable flat cable. This utility model relates to the field of cable technology and discloses an easily bendable flat cable, comprising at least three cable bodies and a cable sheath layer wrapped around the outer periphery of the cable bodies. Several cable cores are installed within the cable bodies. The cable sheath layer has transverse and longitudinal slots, which are connected. The cable bodies include an outer sheath, a first shielding layer, a second shielding layer, and a filling layer. Several cable cores are wrapped within the filling layer. The surface of the cable sheath layer is flat, facilitating bending of the cable bodies. The cable bodies can be bent along the longitudinal and transverse slots, with the crease located within either the transverse or longitudinal slot. The root of the bent cable sheath layer is embedded in the slot, preventing damage due to mutual pressure. After bending, the surface of the cable sheath layer is relatively flat, not easily springing back, and easy to use.

[0004] In practical use, a type of easily bendable flat cable lacks an effective buffer and support structure inside. When bent, the stress on each core is uneven, which not only accelerates cable aging but may also cause safety hazards such as short circuits. Utility Model Content

[0005] The purpose of this utility model is to provide a low-smoke, halogen-free, environmentally friendly cable to solve the problems mentioned in the background section and overcome its technical defects.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: an easily bendable flat cable, including a conductor layer, an insulating buffer layer fixedly installed on the outside of the conductor layer, a silver-plated copper braided mesh fixedly installed on the outside of the insulating buffer layer, multiple micro air cavities evenly distributed inside the insulating buffer layer, an aluminum-plastic composite tape fixedly installed on the outside of the silver-plated copper braided mesh, a tensile layer fixedly installed on the outside of the aluminum-plastic composite tape, an outer sheath fixedly installed on the outside of the tensile layer, a pressure-reducing groove provided on the surface of the outer sheath, and silicone grease provided on the inner side of the pressure-reducing groove.

[0007] Preferably, the conductor layer includes a plurality of conductor bundles, and a flexible isolation strip is provided between the conductor bundles and the insulating buffer layer.

[0008] Preferably, each conductor bundle contains multiple stranded tin-plated copper conductors. The tin-plated copper conductors have good conductivity and oxidation resistance. The stranded structure enhances the flexibility of the conductors. The flexible isolation strip is made of silicone rubber, which is soft and elastic. It can prevent the conductor bundles from rubbing against each other and provide space for the conductors to deform when the cable is bent, thus avoiding the conductors from breaking due to excessive compression.

[0009] Preferably, the weaving density of the silver-plated copper braided mesh is 85%-90%, and the overlap rate of the aluminum-plastic composite belt is not less than 20%.

[0010] Preferably, the insulating buffer layer is made of foamed polypropylene material, which has excellent insulation properties.

[0011] Preferably, the tensile layer is composed of multiple aramid fiber bundles and spirally wound stainless steel wires. The aramid fiber bundles have the characteristics of high strength and low density, providing the main tensile strength. The spirally wound stainless steel wires form an elastic support structure, which enhances the tensile performance and helps the cable recover its shape after bending, reducing plastic deformation.

[0012] Preferably, the outer protective layer is made of thermoplastic elastomer (TPE) material, which combines the high elasticity of rubber with the processing performance of plastic, and has good wear resistance and weather resistance.

[0013] Preferably, the silver-plated copper braided mesh has high conductivity and good flexibility, and can effectively shield high-frequency electromagnetic interference, while the aluminum-plastic composite tape has a significant shielding effect on low-frequency electromagnetic interference.

[0014] Compared with the prior art, the beneficial effects of this utility model include: the bendable flat cable uses multiple stranded tinned copper conductors to form a conductor bundle in the conductor layer, combined with a flexible insulating strip made of silicone rubber, which not only enhances the flexibility of the conductor itself, but also provides sufficient space for deformation during bending, preventing the conductor from breaking due to compression; the micro-cavities and foamed polypropylene material in the insulation buffer layer can absorb stress through compression and rebound during bending, while the pressure-reducing grooves and silicone grease in the outer sheath reduce surface friction and tension during bending. The synergistic effect of multiple structures allows the cable to withstand high-frequency bending without damage, greatly extending its service life; the tension layer is composed of aramid fiber bundles and spirally wound stainless steel wires, with aramid fibers providing high tensile strength and stainless steel wires forming elastic support, reducing plastic deformation after bending, making the cable less prone to breakage under tensile force, while maintaining the overall structural stability; the flexible insulating strip can also prevent frictional damage between conductor bundles, further ensuring structural integrity. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0016] Figure 2 This is a schematic diagram of the three-dimensional structure of the tensile layer of this utility model;

[0017] Figure 3 This is a schematic diagram of the three-dimensional structure of the outer protective layer of this utility model;

[0018] Figure 4 This is a magnified structural diagram showing a partial detail of the present invention.

[0019] In the diagram: 1. Conductor layer; 2. Insulating buffer layer; 3. Micro air cavity; 4. Silver-plated copper braided mesh; 5. Aluminum-plastic composite strip; 6. Tensile layer; 7. Outer sheath; 8. Pressure relief groove; 9. Silicone grease; 101. Conductor bundle; 102. Flexible isolation strip. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0022] An embodiment of the present invention is shown in conjunction with the accompanying drawings.

[0023] A bendable flat cable includes a conductor layer 1. The conductor layer 1 has an insulating buffer layer 2 fixedly installed on its outer side. A silver-plated copper braided mesh 4 is fixedly installed on the outer side of the insulating buffer layer 2. Multiple micro-air cavities 3 are evenly distributed inside the insulating buffer layer 2. An aluminum-plastic composite tape 5 is fixedly installed on the outer side of the silver-plated copper braided mesh 4. A tensile layer 6 is fixedly installed on the outer side of the aluminum-plastic composite tape 5. An outer sheath 7 is fixedly installed on the outer side of the tensile layer 6. A pressure-reducing groove 8 is provided on the surface of the outer sheath 7. Silicone grease 9 is provided inside the pressure-reducing groove 8. The pressure-reducing groove 8 releases stress when the cable is bent, and the silicone grease 9 further reduces friction, preventing cracks or damage to the outer sheath 7 due to repeated bending.

[0024] In this embodiment, the conductor layer 1 includes a plurality of conductor bundles 101, and a flexible isolation strip 102 is provided between the conductor bundles 101 and the insulating buffer layer 2.

[0025] In this embodiment, each conductor bundle 101 contains multiple stranded tin-plated copper conductors. The tin-plated copper conductors have good conductivity and oxidation resistance. The stranded structure enhances the flexibility of the conductors. The flexible isolation strip 102 is made of silicone rubber, which is soft and elastic. It can prevent the conductor bundles 101 from rubbing against each other and provide space for the conductors to deform when the cable is bent, thus avoiding the conductors from breaking due to excessive compression.

[0026] In this embodiment, the weaving density of the silver-plated copper braided mesh 4 is 85%-90%, and the overlap rate of the aluminum-plastic composite belt 5 is not less than 20%.

[0027] In this embodiment, the insulating buffer layer 2 is made of foamed polypropylene material, which has excellent insulation properties.

[0028] In this embodiment, the tensile layer 6 is composed of multiple aramid fiber bundles and spirally wound stainless steel wires. The aramid fiber bundles have the characteristics of high strength and low density, providing the main tensile strength. The spirally wound stainless steel wires form an elastic support structure, which enhances the tensile performance and helps the cable recover its shape after bending, reducing plastic deformation.

[0029] In this embodiment, the outer protective layer 7 is made of thermoplastic elastomer TPE material. TPE material combines the high elasticity of rubber with the processing performance of plastic, and has good wear resistance and weather resistance.

[0030] In this embodiment, the silver-plated copper braided mesh 4 has high conductivity and good flexibility, which can effectively shield high-frequency electromagnetic interference, while the aluminum-plastic composite tape 5 has a significant shielding effect on low-frequency electromagnetic interference.

[0031] Working principle: When the cable is bent, the conductor bundle 101 formed by the stranded tin-plated copper conductors in conductor layer 1 undergoes adaptive deformation due to its own flexibility. The flexible isolation strip 102 provides deformation space for the conductor bundle 101 through compression and rebound, avoiding excessive compression between conductors. The micro-cavities 3 in the insulation buffer layer 2 contract or expand with the bending action, and together with the elasticity of the foamed polypropylene material, absorb the stress generated by bending, reducing the impact on the internal conductors. The pressure-reducing grooves 8 in the outer sheath 7 disperse the surface tension at the bend, and the silicone grease 9 reduces the frictional resistance inside the grooves, making the bending process smoother. In terms of shielding, the silver-plated copper braided mesh 4 intercepts high-frequency electromagnetic interference with its high conductivity, while the aluminum-plastic composite tape 5 effectively blocks low-frequency interference. The double shielding ensures that the electrical signals transmitted in conductor layer 1 are not affected by external interference. When the cable is subjected to tension, the aramid fiber bundles in the tensile layer 6 bear the main tension, and the spirally wound stainless steel wire assists in resisting tension through elastic deformation and helps the cable return to its original shape after the tension disappears, reducing plastic deformation. The TPE in the outer sheath 7 The materials protect the internal structure throughout the process, resisting external wear, corrosion and other effects, ensuring that the cable works stably in complex environments.

[0032] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A bendable flat cable, comprising a conductor layer (1), characterized in that, An insulating buffer layer (2) is fixedly installed on the outside of the conductor layer (1). A silver-plated copper braided mesh (4) is fixedly installed on the outside of the insulating buffer layer (2). Multiple micro air cavities (3) are evenly distributed inside the insulating buffer layer (2). An aluminum-plastic composite strip (5) is fixedly installed on the outside of the silver-plated copper braided mesh (4). A tensile layer (6) is fixedly installed on the outside of the aluminum-plastic composite strip (5). An outer protective layer (7) is fixedly installed on the outside of the tensile layer (6). A pressure-reducing groove (8) is provided on the surface of the outer protective layer (7). Silicon grease (9) is provided on the inside of the pressure-reducing groove (8).

2. The easily bendable flat cable according to claim 1, characterized in that, The conductor layer (1) includes a plurality of conductor bundles (101), and a flexible isolation strip (102) is provided between the conductor bundles (101). A flexible isolation strip (102) is provided between the conductor bundles (101) and the insulating buffer layer (2).

3. The easily bendable flat cable according to claim 2, characterized in that, Each conductor bundle (101) contains multiple stranded tin-plated copper conductors. The tin-plated copper conductors have good conductivity and oxidation resistance. The stranded structure enhances the flexibility of the conductors. The flexible isolation strip (102) is made of silicone rubber, which is soft and elastic. It can prevent the conductor bundles (101) from rubbing against each other and provide space for the conductors to deform when the cable is bent, thus avoiding the conductors from breaking due to excessive compression.

4. The easily bendable flat cable according to claim 1, characterized in that, The weaving density of the silver-plated copper woven mesh (4) is 85%-90%, and the overlap rate of the aluminum-plastic composite belt (5) is not less than 20%.

5. The easily bendable flat cable according to claim 1, characterized in that, The insulating buffer layer (2) is made of foamed polypropylene material, which has excellent insulation properties.

6. The easily bendable flat cable according to claim 1, characterized in that, The tensile layer (6) is composed of multiple aramid fiber bundles and spirally wound stainless steel wires. The aramid fiber bundles have the characteristics of high strength and low density, providing the main tensile strength. The spirally wound stainless steel wires form an elastic support structure, which can enhance the tensile performance and help the cable recover its shape after bending, reducing plastic deformation.

7. The easily bendable flat cable according to claim 1, characterized in that, The outer protective layer (7) is made of thermoplastic elastomer TPE material. TPE material has the high elasticity of rubber and the processing performance of plastic, and has good wear resistance and weather resistance.

8. The easily bendable flat cable according to claim 1, characterized in that, The silver-plated copper braided mesh (4) has high conductivity and good flexibility, and can effectively shield high-frequency electromagnetic interference. The aluminum-plastic composite tape (5) has a significant shielding effect on low-frequency electromagnetic interference.

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