Bending-resistant flexible cable

Abstract

The utility model relates to the technical field of cables, and discloses an anti-bending flexible cable which comprises a shielding layer, a filling layer is arranged on the inner wall of the shielding layer, a flame-retardant assembly is arranged in the filling layer, a first supporting assembly is arranged on the outer side of the flame-retardant assembly, an inner core is fixedly connected in the supporting assembly, and a second supporting assembly is arranged in the inner core. A second supporting assembly is arranged on the outer side of the shielding layer, an anti-bending layer is fixedly connected to the outer side of the supporting assembly, a sheath layer is fixedly connected to the outer side of the anti-bending layer, the flame-retardant assembly comprises a plurality of filling sleeves, the outer sides of the filling sleeves are arranged on the outer side of the filling layer, and flame-retardant powder is arranged in the filling sleeves. According to the utility model, through the ammonium polyphosphate flame-retardant powder in the plurality of filling sleeves, flame is prevented from further spreading towards the inside of the cable, and the transmission of heat to an unburned part can be reduced, so that the flame-retardant effect is achieved, the safety of the cable and the surrounding environment is protected, and the fire is prevented from spreading due to the combustion of the cable.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, and in particular to a flexible cable resistant to bending. Background Technology

[0002] A cable is an electrical energy or signal transmission device, typically made of one or more mutually insulated conductors encased in an insulation and protective layer. It can be used in power transmission, communications, and other fields, offering advantages such as high transmission efficiency, good stability, and strong anti-interference capabilities. It can ensure reliable power and information transmission in various environments, and comes in a variety of types to meet diverse needs.

[0003] In practical applications, cables often need to be bent repeatedly in conjunction with other devices. However, many existing cables have poor bending resistance. After repeated bending, not only will the transmitted signal become unstable, but breakage will also occur. Furthermore, in the event of a fire, the cable cannot extinguish the fire quickly, and the risk of the fire spreading will increase.

[0004] To address the above problems, a flexible cable with bending resistance is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a bend-resistant flexible cable, which aims to improve the existing technology in practical application scenarios where cables often need to be bent repeatedly in conjunction with other devices. However, many existing cables have poor bend resistance. After repeated bending, not only will the transmitted signal become unstable, but breakage will also occur. Furthermore, in the event of a fire, the cable cannot extinguish the fire quickly, and the risk of the fire spreading will also increase.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a bend-resistant flexible cable, comprising a shielding layer, a filling layer disposed on the inner wall of the shielding layer, a flame-retardant component disposed inside the filling layer, a support component one disposed on the outside of the flame-retardant component, an inner core fixedly connected inside the support component, a support component two disposed on the outside of the shielding layer, a bend-resistant layer fixedly connected on the outside of the support component, and a sheath layer fixedly connected on the outside of the bend-resistant layer.

[0007] The flame-retardant component includes multiple filler sleeves, with the outer side of the filler sleeve disposed outside the filler layer, and flame-retardant powder disposed inside the filler sleeve.

[0008] As a further description of the above technical solution:

[0009] The support assembly includes multiple tripods, with the outer sides of the tripods fixedly connected to the outer side of the shielding layer.

[0010] As a further description of the above technical solution:

[0011] The second support component includes a reinforcing ring, the outer side of which is fixedly connected to the outer side of the shielding layer.

[0012] As a further description of the above technical solution:

[0013] The reinforcing rings are in a cross-woven pattern.

[0014] As a further description of the above technical solution:

[0015] The six tripods are fixed together in a regular hexagonal shape.

[0016] As a further description of the above technical solution:

[0017] The flame retardant powder is ammonium polyphosphate, and the filler layer is PO material.

[0018] As a further description of the above technical solution:

[0019] The flame retardant powder is disposed on the outside of the tripod.

[0020] As a further description of the above technical solution:

[0021] The bending-resistant layer is made of polyurethane.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the ammonium polyphosphate flame retardant powder inside multiple filler sleeves prevents the flame from spreading further into the cable and also reduces the transfer of heat to unburned parts, thereby achieving a flame retardant effect, protecting the safety of the cable and the surrounding environment, and preventing the fire from spreading due to cable combustion.

[0024] 2. In this utility model, the hexagonal triangular frame combination can evenly distribute stress, avoiding stress concentration on the inner core and causing damage. The reinforcing ring can effectively resist external forces, prevent the cable from being excessively flattened or stretched, maintain the basic shape and structural integrity of the cable, and ensure the stability of the transmitted signal. Attached Figure Description

[0025] Figure 1 This is a perspective view of a bend-resistant flexible cable proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the reinforcing ring structure of a bend-resistant flexible cable proposed in this utility model;

[0027] Figure 3 This is a schematic diagram of the structure of flame-retardant powder for a bend-resistant flexible cable proposed in this utility model.

[0028] Legend:

[0029] 1. Sheath layer; 2. Bending-resistant layer; 3. Reinforcing ring; 4. Shielding layer; 5. Flame retardant powder; 6. Filler layer; 7. Tripod; 8. Inner core; 9. Filler sleeve. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figure 1 - Figure 3 The present invention provides an embodiment of a bend-resistant flexible cable, comprising a shielding layer 4, a filling layer 6 disposed on the inner wall of the shielding layer 4, a flame-retardant component disposed inside the filling layer 6, a support component one disposed outside the flame-retardant component, an inner core 8 fixedly connected inside the support component, a support component two disposed outside the shielding layer 4, a bend-resistant layer 2 fixedly connected outside the support component, and a sheath layer 1 fixedly connected outside the bend-resistant layer 2.

[0032] The flame-retardant component includes multiple filler sleeves 9, with the outer side of the filler sleeves 9 disposed outside the filler layer 6, and flame-retardant powder 5 disposed inside the filler sleeves 9.

[0033] Specifically, the sheath layer 1 protects the internal components of the cable from mechanical damage, chemical corrosion, moisture intrusion, and external environmental factors. The anti-bending layer 2 enhances the cable's flexibility and bending resistance. Made of polyurethane, it effectively absorbs and disperses bending stress during cable bending, preventing damage to the internal structure from frequent or large-angle bending and ensuring stable operation in applications requiring frequent shape changes. The support component 2 prevents excessive deformation of the cable under external pressure or tension, ensuring the relative stability of the internal layers and maintaining the cable's normal function. The shielding layer 4 shields against external electromagnetic interference. The flame-retardant powder 5, made of ammonium polyphosphate, decomposes upon heating in the event of a fire or high temperature, generating a strong dehydrating agent that promotes the dehydration and carbonization of combustible materials within the cable, thus preventing further damage. A dense carbon layer is formed, isolating oxygen and preventing the spread of flames, thus playing a flame-retardant role and protecting the cable and the surrounding environment. The filler layer 6 is used to fill the gaps between the inner wall of the shielding layer 4 and other internal components, making the cable structure more stable. The support component 1 is used to provide a stable support structure for the inner core 8. When the cable is subjected to bending force, it can evenly distribute stress, preventing the inner core 8 from being damaged due to stress concentration, and ensuring the normal current conduction function of the inner core 8. The inner core 8 is used to conduct current and is the core component of the cable to realize power transmission, transmitting electrical energy from one end to the other to meet the power needs of various electrical equipment. The filler sleeve 9 is used to wrap the flame-retardant powder 5 and fix it in a suitable position on the outside of the filler layer 6, so that the flame-retardant powder 5 is evenly distributed in the cable, ensuring that it can play a full role when flame retardancy is required, and effectively preventing the spread of flames inside the cable.

[0034] Reference Figure 1 and Figure 2 Support component one includes multiple tripods 7, with the outer side of the tripods 7 fixedly connected to the outer side of the shielding layer 4. Support component two includes a reinforcing ring 3, with the outer side of the reinforcing ring 3 fixedly connected to the outer side of the shielding layer 4.

[0035] Specifically, the tripod 7 is used to construct a stable support structure inside the cable. The inner core 8 can be fixed on the inside. When the cable faces bending or is subjected to external forces, it can evenly distribute stress, effectively preventing the inner core 8 from being damaged due to stress concentration, ensuring that the inner core 8 can continuously and stably conduct current, and maintaining the power transmission function of the cable. The reinforcing ring 3 is used to significantly enhance the overall structural strength of the cable. When the cable is subjected to external extrusion, tension or other forces, it can effectively resist external forces with its special cross-braided structure, preventing the cable from excessively deforming or structurally damaged, ensuring that the relative positions of the internal layers of the cable remain stable, thereby ensuring that the cable can work normally under complex stress environments and maintain the stable performance of its various properties.

[0036] Reference Figure 1 - Figure 3The reinforcing ring 3 is cross-woven, the six tripods 7 are fixed to each other in a regular hexagonal shape, the flame retardant powder 5 is ammonium polyphosphate, the filler layer 6 is PO material, the flame retardant powder 5 is set on the outside of the tripods 7, and the bending layer 2 is polyurethane material.

[0037] Specifically, the reinforcing ring 3 is cross-braided to enhance the overall mechanical properties of the cable. When the cable is subjected to external pressure, tension, or torsional force, the cross-braided structure can disperse stress from multiple directions, effectively preventing the cable from being flattened, stretched, or twisted, ensuring the integrity and stability of the internal structure, enabling the cable to adapt to complex installation and usage environments, and maintaining its normal power and signal transmission functions. The tripod 7 is designed so that during the cable bending process, the regular hexagonal structure can evenly distribute the bending stress to each tripod 7, preventing the inner core 8 from being damaged due to excessive local stress, ensuring that the conductivity of the inner core 8 is not affected, and ensuring stable current transmission. At the same time, its fixed connection with the shielding layer 4 also helps to maintain the electrical... The cable's internal structure is integrated. The flame-retardant powder 5 is used to exert its flame-retardant effect through its own chemical decomposition reaction when the cable encounters a fire or high-temperature environment. The filler layer 6 is used to fill the gaps between the inner wall of the shielding layer 4 and other internal components, making the internal structure of the cable more compact and stable, and reducing the performance degradation caused by the loose internal structure. On the other hand, it provides suitable space for the flame-retardant components, ensuring that the flame-retardant powder 5 can be reasonably distributed inside the cable and can fully exert its flame-retardant effect in the event of a fire. At the same time, it also has a certain buffering performance, which can protect the internal conductors and other components from the impact of external impacts to a certain extent. The bending-resistant layer 2 is mainly used to give the cable excellent bending resistance and flexibility.

[0038] Working Principle: During use, when the cable is subjected to bending force, the hexagonal triangular brackets 7 can evenly distribute the stress, preventing stress concentration on the inner core 8 and causing damage. When the cable is subjected to external compression or tension, the reinforcing ring 3 can effectively resist external force, preventing the cable from being excessively flattened or stretched, maintaining the basic shape and structural integrity of the cable. When the cable is laid in a narrow pipe or in a wiring scenario that needs to withstand a certain amount of tension, the reinforcing ring 3 can prevent the cable from deforming and affecting its performance. When the cable encounters a fire or high-temperature environment, the ammonium polyphosphate flame retardant powder 5 decomposes upon heating. During the decomposition process, a strong dehydrating agent is produced, which promotes the dehydration and carbonization of combustible materials in the cable, quickly forming a dense carbon layer on the cable surface. This carbon layer can effectively isolate oxygen, prevent the flame from spreading further into the cable, and also reduce the transfer of heat to unburned parts, thereby achieving a flame retardant effect, protecting the safety of the cable and the surrounding environment, and preventing the fire from spreading due to cable combustion. When the cable needs to be bent, the bending-resistant layer 2 can easily adapt to bending deformation, undergoing elastic deformation without cracking or being damaged. Polyurethane material can buffer and absorb the stress generated during bending. Whether it is frequent bending at small angles or occasional bending at larger angles, it can effectively protect the internal shielding layer 4, support components, inner core 8 and other structures from damage. Furthermore, the shielding layer 4 can effectively confine the electromagnetic field generated by the current inside the cable to the inside of the cable, ensuring the accuracy and stability of signal transmission. This allows the cable to reliably transmit data and power even in complex electromagnetic environments, such as areas with dense electronic equipment or near power systems.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bend-resistant flexible cable, comprising a shielding layer (4), characterized in that: The inner wall of the shielding layer (4) is provided with a filling layer (6), the inside of the filling layer (6) is provided with a flame retardant component, the outside of the flame retardant component is provided with a support component one, the inside of the support component is fixedly connected with an inner core (8), the outside of the shielding layer (4) is provided with a support component two, the outside of the support component is fixedly connected with an anti-bending layer (2), and the outside of the anti-bending layer (2) is fixedly connected with a sheath layer (1). The flame retardant component includes multiple filler sleeves (9), the outer side of the filler sleeves (9) is disposed on the outer side of the filler layer (6), and flame retardant powder (5) is disposed inside the filler sleeves (9).

2. The bend-resistant flexible cable according to claim 1, characterized in that: The support assembly includes multiple tripods (7), and the outer side of the tripods (7) is fixedly connected to the outer side of the shielding layer (4).

3. The bend-resistant flexible cable according to claim 1, characterized in that: The second support component includes a reinforcing ring (3), which is fixedly connected to the outside of the shielding layer (4).

4. The bend-resistant flexible cable according to claim 3, characterized in that: The reinforcing ring (3) is in a cross-woven shape.

5. A bend-resistant flexible cable according to claim 2, characterized in that: The six tripods (7) are fixed together in a regular hexagonal shape.

6. The bend-resistant flexible cable according to claim 1, characterized in that: The flame retardant powder (5) is ammonium polyphosphate, and the filler layer (6) is PO material.

7. The bend-resistant flexible cable according to claim 2, characterized in that: The flame retardant powder (5) is disposed on the outside of the tripod (7).

8. The bend-resistant flexible cable according to claim 1, characterized in that: The bending-resistant layer (2) is made of polyurethane.

Images