A type of bend-resistant electrical connection wire

Abstract

This utility model relates to a bending-resistant electrical connection wire, comprising a conductor, a buffer layer, an insulation layer, a support layer, a middle layer, a protective layer, and a plug sleeve. The conductor is disposed inside the buffer layer, the buffer layer inside the insulation layer, the insulation layer inside the support layer, the support layer inside the middle layer, the middle layer inside the protective layer, and the plug sleeve is disposed outside the middle layer at both ends of the protective layer. The middle layer includes a nylon braided mesh and an elastomer, with the elastomer embedded in the mesh openings of the nylon braided mesh. The conductor is composed of multiple strands of tinned copper wire twisted and spirally wound around an elastic mandrel, forming a redundant structure that can axially expand and contract. This utility model features a buffer layer to buffer stress and protect the conductor, a middle layer for synergistic buffering and support, and protective and insulation layers to enhance protection and insulation, thereby improving the bending resistance and reliability of the connection wire.

Description

Technical Field

[0001] This utility model relates to the field of electrical connection wires, and specifically to an electrical connection wire that is resistant to bending. Background Technology

[0002] Traditional electrical connection cables have the following technical drawbacks when used in scenarios involving frequent bending or large-angle twisting:

[0003] 1. Internal conductors are prone to fatigue fracture, leading to poor contact;

[0004] 2. The external insulation layer is easily damaged, which may cause a short circuit risk.

[0005] Existing technologies improve bending resistance by increasing wire diameter or using a single highly elastic material, but this sacrifices flexibility and still results in stress concentration. Conventional structures lack stress buffering mechanisms, and stress acts directly on the conductor during bending, leading to metal fatigue. Therefore, a bending-resistant electrical connection wire is proposed. Utility Model Content

[0006] The purpose of this utility model is to solve the above-mentioned defects and provide an electrical connection wire that is resistant to bending. In terms of structural design, it adopts a multi-layer composite structure. By setting a buffer layer, bending stress is buffered and dispersed. The middle layer uses a nylon braided mesh and an elastomer embedded therein to provide stress buffering and support. At the same time, the protective layer and the insulation layer enhance the protection and insulation performance. This solves the technical problems of the prior art in the case of frequent bending or large-angle twisting, which are that simply increasing the wire diameter or using a single high-elasticity material sacrifices flexibility and still has stress concentration, poor contact due to fatigue fracture of the internal conductor, and short circuit risk caused by easy damage to the external insulation layer.

[0007] The objective of this utility model is achieved through the following means:

[0008] A bending-resistant electrical connection wire includes a conductor, a buffer layer, an insulation layer, a support layer, a middle layer, a protective layer, and a plug sleeve. The conductor is disposed inside the buffer layer, the buffer layer is disposed inside the insulation layer, the insulation layer is disposed inside the support layer, the support layer is disposed inside the middle layer, the middle layer is disposed inside the protective layer, and the plug sleeve is disposed outside the middle layer at both ends of the protective layer. The middle layer includes a nylon braided mesh and an elastomer, with the elastomer embedded in the mesh openings of the nylon braided mesh. The conductor is formed by multiple strands of tinned copper wire twisted together and spirally wound around an elastic mandrel, forming an axially expandable redundant structure.

[0009] Furthermore, the buffer layer is fixedly connected to the conductor, and the insulating layer is fixedly connected to the buffer layer; the buffer layer is a thermoplastic elastomer, and the buffer layer acts as a stress buffer medium to uniformly disperse bending deformation.

[0010] Furthermore, the support layer is fixedly connected to the insulating layer, and the middle layer is fixedly connected to the support layer. The middle layer is made of elastic silicone with a gradient decreasing hardness.

[0011] Furthermore, the protective layer is fixedly connected to the middle layer, and the plug-in sleeve is fixedly connected to the protective layer; the protective layer is a gradient hardness silicone protective layer, and the plug-in sleeve is made of high hardness silicone to enhance plugging and unplugging stability.

[0012] Furthermore, both the protective layer and the plug sleeve are provided with spiral anti-slip textures on their exterior.

[0013] Furthermore, the spiral anti-slip texture is integrally formed with the protective layer and the plug sleeve.

[0014] The beneficial effects of this utility model are:

[0015] This utility model, by setting a buffer layer, can buffer some of the stress when the connecting wire is bent. Based on the stress dispersion principle, it reduces the direct stress acting on the conductor and avoids poor contact caused by conductor fatigue fracture, thereby solving the problem of easy fatigue fracture of the internal conductor of traditional connecting wires.

[0016] The middle layer uses a nylon woven mesh and an elastomer structure embedded in its mesh. By utilizing the synergistic effect of the strength of the nylon woven mesh and the elasticity of the elastomer, it provides good stress buffering and support when bending. Based on the principle of stress buffering and dispersion, it effectively reduces the damage of stress concentration to each layer of the connecting line structure and ensures the stability of the connecting line structure.

[0017] The protective and insulating layers further enhance the protection and insulation performance of the connector. Based on the principle of protection and insulation, it prevents short circuits caused by external damage, thereby solving the problem of short circuit risk caused by easy damage to the external insulation layer of traditional connectors. It also improves the reliability and safety of the connector in scenarios with frequent bending or large-angle twisting. Attached Figure Description

[0018] Figure 1 This is a perspective view of the overall structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0020] Figure 3 For the present utility model Figure 2 Enlarged view of a portion of region A in the middle;

[0021] Figure 4 This is a three-dimensional view of the support layer structure of this utility model.

[0022] In the diagram, 1 is the conductor; 2 is the buffer layer; 3 is the insulation layer; 4 is the support layer; 5 is the middle layer; 6 is the protective layer; 7 is the plug sleeve; 8 is the spiral anti-slip texture; 9 is the nylon woven mesh; and 10 is the elastomer. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0024] In this embodiment, refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 The present invention relates to a bending-resistant electrical connection wire, comprising a conductor 1, a buffer layer 2, an insulation layer 3, a support layer 4, a middle layer 5, a protective layer 6, and a plug-in sleeve 7. The conductor 1 is disposed inside the buffer layer 2, the buffer layer 2 is disposed inside the insulation layer 3, the insulation layer 3 is disposed inside the support layer 4, the support layer 4 is disposed inside the middle layer 5, the middle layer 5 is disposed inside the protective layer 6, and the plug-in sleeve 7 is disposed outside the middle layer 5 at both ends of the protective layer 6. The middle layer 5 comprises a nylon braided mesh 9 and an elastomer 10, the elastomer 10 being embedded in the mesh openings of the nylon braided mesh 9. The conductor 1 is formed by multiple strands of tinned copper wire twisted together and spirally wound onto an elastic mandrel, forming a redundant structure that can be axially extended and retracted.

[0025] like Figure 1 , Figure 2 and Figure 3 As shown, the buffer layer 2 is fixedly connected to the conductor 1, and the insulating layer 3 is fixedly connected to the buffer layer 2; the buffer layer 2 is a thermoplastic elastomer, and the buffer layer 2 serves as a stress buffer medium to uniformly disperse bending deformation.

[0026] like Figure 1 , Figure 2 and Figure 3 As shown, the support layer 4 is fixedly connected to the insulating layer 3, and the middle layer 5 is fixedly connected to the support layer 4. The middle layer 5 is made of elastic silicone with a gradient decreasing hardness.

[0027] like Figure 1 , Figure 2 and Figure 3 As shown, the protective layer 6 is fixedly connected to the middle layer 5, and the plug-in sleeve 7 is fixedly connected to the protective layer 6; the protective layer 6 is a gradient hardness silicone protective layer, and the plug-in sleeve 7 is made of high hardness silicone to enhance the stability of plugging and unplugging.

[0028] like Figure 1 and Figure 2 As shown, both the protective layer 6 and the plug-in sleeve 7 are provided with spiral anti-slip texture 8 on their exterior.

[0029] like Figure 1 and Figure 2 As shown, the spiral anti-slip texture 8 is integrally formed with the protective layer 6 and the plug-in sleeve 7.

[0030] The working principle of the bending-resistant electrical connection wire in this embodiment is as follows: When the electrical connection wire is subjected to bending force, the layers of the structure work together to achieve bending resistance. The conductor 1 is a redundant structure that can be axially stretched and expanded, formed by multiple strands of tin-plated copper wire twisted together and spirally wound on an elastic core. It can undergo a certain degree of axial stretching and expansion during bending, avoiding the situation of breakage due to stress concentration inside the conductor caused by bending, and ensuring the stability of current transmission.

[0031] The buffer layer 2, as a stress buffer medium, is made of thermoplastic elastomer material. When the connecting wire is bent, the buffer layer 2 can absorb and disperse part of the bending stress, so that the bending deformation is evenly distributed in all parts of the buffer layer 2 in contact with the conductor 1, reducing the direct impact on the conductor 1 and further protecting the conductor 1 from damage.

[0032] The insulation layer 3 is fixedly connected to the outside of the buffer layer 2. Its main function is to ensure the electrical insulation performance between the conductor 1 and the external environment and other conductors, and to prevent safety hazards such as leakage. At the same time, it can also assist the buffer layer 2 in protecting the conductor 1 to a certain extent and jointly cope with the impact of bending.

[0033] The support layer 4 is fixedly connected to the insulation layer 3, providing a certain structural support for the connecting wire, ensuring that the connecting wire will not be excessively deformed during bending and thus affecting the internal structure, and maintaining the overall shape stability of the connecting wire;

[0034] The middle layer 5 uses elastic silicone with a gradient decreasing hardness and includes a nylon braided mesh 9 and an elastomer 10 embedded in the mesh of the nylon braided mesh 9. This structure allows the elastic silicone with different hardness to deform to different degrees depending on the degree and position of bending when the middle layer 5 is bent. The nylon braided mesh 9 enhances the overall strength and tensile properties of the middle layer 5, and the elastomer 10 further improves the elastic recovery ability of the middle layer 5, effectively absorbing and releasing bending energy and preventing fatigue damage to the connecting wire due to long-term bending.

[0035] The protective layer 6 is a gradient hardness silicone protective layer, which is fixedly connected to the middle layer 5. Its gradient hardness characteristic can provide different levels of protection in different parts of the connecting line. In the parts of the connecting line that are easily bent or subjected to external impact, the hardness is relatively low, which can better buffer stress.

[0036] In other parts, the hardness is relatively high to ensure the overall strength of the connecting wire. The spiral anti-slip texture 8 set on the outside of the protective layer 6 is integrally formed with the protective layer 6, which can increase the friction when the connecting wire comes into contact with external objects, prevent the connecting wire from slipping or moving during use, and improve the convenience and safety of use.

[0037] The plug-in sleeve 7 is made of high-hardness silicone and is located on the outside of the middle layer 5 at both ends of the protective layer 6, and is fixedly connected to the protective layer 6. Its high hardness enhances the stability during plugging and unplugging, so that the connecting cable can be accurately and stably inserted and pulled out when plugging and unplugging the connecting cable to other electrical devices, reducing problems such as poor connection or damage to the plug caused by unstable plugging and unplugging. At the same time, the spiral anti-slip texture 8 on the outside of the plug-in sleeve 7 also increases the friction, making it convenient for users to plug and unplug. Through the synergistic effect of the above-mentioned layers, the electrical connecting cable of this embodiment achieves good bending resistance, ensuring the reliability and stability of the electrical connecting cable in various usage scenarios.

[0038] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A bending-resistant appliance connecting cord comprising a conductor, a buffer layer, an insulation layer, a support layer, a middle layer, a protective layer and a plug-in sleeve, characterized in that, The conductor is disposed inside the buffer layer, the buffer layer is disposed inside the insulating layer, the insulating layer is disposed inside the support layer, the support layer is disposed inside the middle layer, the middle layer is disposed inside the protective layer, and the plug sleeve is disposed outside the middle layer at both ends of the protective layer. The middle layer includes a nylon braided mesh and an elastomer, and the elastomer is embedded in the mesh of the nylon braided mesh.

2. The anti-bending appliance connecting cord according to claim 1, wherein: The buffer layer is fixedly connected to the conductor, and the insulating layer is fixedly connected to the buffer layer.

3. The kink-resistant appliance cord of claim 1, wherein: The support layer is fixedly connected to the insulating layer, and the middle layer is fixedly connected to the support layer.

4. The kink-resistant electrical device cord of claim 1, wherein: The protective layer is fixedly connected to the middle layer, and the plug-in sleeve is fixedly connected to the protective layer.

5. The kink-resistant electrical device cord of claim 1, wherein: Both the protective layer and the plug sleeve have spiral anti-slip textures on their exterior.

6. The kink-resistant electrical device cord of claim 5, wherein: The spiral anti-slip texture is integrally formed with the protective layer and the plug-in sleeve.

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