Waterproof and dustproof mobile cable

Abstract

This utility model belongs to the field of mobile cable technology, and in particular to a waterproof and dustproof mobile cable, including a conductor, and further including: a support frame, the support frame being a thermoplastic elastomer, the conductor being inserted into the support frame, and having spiral reinforcing ribs on the outer wall of the support frame; an inner silicone rubber sealing sleeve, the inner silicone rubber sealing sleeve wrapping around the outside of the support frame; an outer silicone rubber sealing sleeve, the outer silicone rubber sealing sleeve wrapping around the inner silicone rubber sealing sleeve; and a sheath layer, the sheath layer wrapping around the outer silicone rubber sealing sleeve. In this utility model, the conductor is fixedly installed by the support frame with spiral reinforcing ribs, which greatly improves the tensile and bending resistance of the mobile cable; the double-sealed structure makes the cable waterproof to IP69K and dustproof to IP6X, making it more reliable in humid and dusty environments.

Description

Technical Field

[0001] This utility model belongs to the field of mobile cable technology, specifically relating to a waterproof and dustproof mobile cable. Background Technology

[0002] Mobile cables, also known as drag chain cables or flexible cables, are mainly used in applications requiring frequent movement or bending, such as robotic arms, automated equipment, and mobile devices. They are known for their excellent flexibility, abrasion resistance, and tensile strength, and can maintain stable performance during continuous back-and-forth movement, making them suitable for various applications requiring frequent movement.

[0003] Traditional mobile cables are prone to cracking at their connection points with electrical equipment during repeated pulling, which can lead to electrical conductivity and safety accidents.

[0004] A search revealed that Chinese utility model patent CN215496061U discloses a "high-strength waterproof, flame-retardant, and wear-resistant mobile cable," which includes an outer sheath. The right end of the outer sheath is provided with an anti-cracking mechanism to prevent the cable from breaking during pulling. The anti-cracking mechanism includes a tungsten steel sleeve at the outer end of the outer sheath. A groove is provided in the middle of the outer side of the tungsten steel sleeve. A flame-retardant layer is provided on the inner side of the outer sheath, and a heat dissipation layer is bonded to the inner side of the flame-retardant layer. A wire core is fixed to the inner side of the heat dissipation layer by filling cotton.

[0005] While existing mobile cables, including those mentioned above, can improve the wear resistance of cables to some extent, their sealing effect is poor, especially at the joints. The sealing at the joints decreases over time, allowing dust particles to easily enter the interior through tiny gaps. Furthermore, their insufficient tensile strength can lead to damage to the internal structure.

[0006] To solve the above problems, this utility model proposes a waterproof and dustproof mobile cable. Utility Model Content

[0007] To address the aforementioned problems in the existing technology, this utility model provides a waterproof and dustproof mobile cable, which is convenient to use and has high safety performance.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a waterproof and dustproof mobile cable, comprising a conductor, and further comprising:

[0009] A support frame, wherein the support frame is a thermoplastic elastomer, the wire core is inserted into the support frame, and the outer wall of the support frame has spiral reinforcing ribs.

[0010] An inner silicone rubber sealing sleeve is wrapped around the outside of the support frame;

[0011] An outer silicone rubber sealing sleeve, which wraps around the outside of the inner silicone rubber sealing sleeve;

[0012] A sheath layer, which wraps around the outside of the outer silicone rubber sealing sleeve.

[0013] As a preferred embodiment of this utility model, the supporting frame is a thermoplastic EPDM elastomer.

[0014] As a preferred technical solution of this utility model, it also includes:

[0015] A shape memory alloy wire has mounting holes extending axially on the support frame, and the shape memory alloy wire is fixed in the mounting holes.

[0016] As a preferred embodiment of this utility model, the sheath layer is a thermoplastic polyurethane elastomer.

[0017] As a preferred embodiment of this utility model, the wire core includes:

[0018] Metallic conductor;

[0019] An insulating layer that wraps around the outside of the wire core;

[0020] A shielding layer that wraps around the outside of the insulating layer;

[0021] A silicone rubber sealing layer, which is wrapped around the outside of the shielding layer.

[0022] As a preferred embodiment of this utility model, the wire core is silver-plated oxygen-free copper stranded wire.

[0023] As a preferred embodiment of this invention, the insulating layer is a cross-linked polyethylene foam material.

[0024] As a preferred embodiment of this invention, the shielding layer is a copper-nickel alloy woven mesh.

[0025] Compared with the prior art, the beneficial effects of this utility model are:

[0026] In this invention, the core wire is fixedly installed by a support frame with spiral reinforcing ribs, which greatly improves the tensile and bending resistance of the mobile cable; the double-sealed structure makes the cable waterproof to IP69K and dustproof to IP6X, making it more reliable in humid and dusty environments.

[0027] Other additional advantages and beneficial effects of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this invention. Attached Figure Description

[0028] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0029] Figure 1 This is a schematic diagram of the structure of this utility model;

[0030] Figure 2 This is a schematic diagram of the isometric structure of the support frame in this utility model;

[0031] Figure 3 This utility model Figure 1 A magnified schematic diagram of the wire core structure in the diagram;

[0032] Figure 4 This utility model Figure 2 A magnified structural diagram at point A in the diagram.

[0033] In the diagram: 1. Core wire; 11. Metal conductor; 12. Insulation layer; 13. Shielding layer; 14. Silicone rubber sealing layer; 2. Support frame; 21. Spiral reinforcing rib; 22. Mounting hole; 3. Inner silicone rubber sealing sleeve; 4. Outer silicone rubber sealing sleeve; 5. Sheath layer; 6. Shape memory alloy wire. Detailed Implementation

[0034] 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.

[0035] Please see Figures 1-4 The present invention provides the following technical solution: a waterproof and dustproof mobile cable, including a core 1, and further including: a support frame 2, an inner silicone rubber sealing sleeve 3, an outer silicone rubber sealing sleeve 4, and a sheath layer 5.

[0036] Furthermore, by Figure 1 and Figure 2As shown in this embodiment, the support frame 2 is a thermoplastic elastomer, the wire core 1 is inserted into the support frame 2, and the outer wall of the support frame 2 has a spiral reinforcing rib 21. The inner silicone rubber sealing sleeve 3 is wrapped around the outside of the support frame 2, the outer silicone rubber sealing sleeve 4 is wrapped around the outside of the inner silicone rubber sealing sleeve 3, and the sheath layer 5 is wrapped around the outside of the outer silicone rubber sealing sleeve 4. With the above scheme, during use, the wire core 1, as the core part of the cable for transmitting power or signals, is safely wrapped inside the support frame 2. The support frame 2 is made of thermoplastic elastomer material, which has good flexibility and elasticity, and can effectively buffer the pressure and impact applied by the outside, avoiding damage to the wire core 1. At the same time, the spiral reinforcing rib 21 on the outer wall of the support frame 2 plays a key reinforcing role. It not only enhances the overall strength of the support frame 2, so that the cable maintains a stable structure during frequent movement and bending, and prevents the wire core 1 from breaking due to excessive bending or stretching, but also guides the inner silicone rubber sealing sleeve 3 to better fit the support frame 2 to a certain extent, ensuring the sealing effect.

[0037] The inner silicone rubber sealing sleeve 3 tightly wraps around the outside of the support frame 2. The silicone rubber material itself has excellent waterproof performance and can effectively prevent the intrusion of water. It fills the tiny gaps that may exist on the surface of the support frame 2, forming a reliable waterproof barrier to protect the core 1 from the influence of the humid environment. Even if the cable is on a wet ground, in a damp basement, or exposed to rain, the inner silicone rubber sealing sleeve 3 can ensure that the core 1 is dry and maintain the normal operation of the cable.

[0038] The outer silicone rubber sealing sleeve 4 further enhances the cable's waterproof and dustproof capabilities. It wraps around the inner silicone rubber sealing sleeve 3, acting as a second, robust defense. The properties of silicone rubber enable it to resist the intrusion of tiny particles such as dust and sand, preventing them from entering the cable and damaging the conductor 1. At the same time, the outer silicone rubber sealing sleeve 4 also enhances the cable's abrasion resistance and weather resistance. Under harsh outdoor environmental conditions, such as exposure to sunlight, wind and rain, and large temperature fluctuations, it can still maintain good performance and extend the cable's service life.

[0039] The outermost sheath layer 5 provides the final protection for the cable. It not only further enhances the mechanical strength of the cable, enabling it to withstand greater external impacts and friction, but also resists the corrosion of chemical substances, such as acid and alkali solutions and oil stains. The presence of sheath layer 5 allows the cable to be used safely in various complex industrial environments, ensuring the stability and reliability of the cable in places such as factory workshops, construction sites, and mines.

[0040] Furthermore, this multi-layered design gives the cable excellent flexibility and mobility. During frequent movement and bending, the layers work together to ensure the cable's waterproof and dustproof performance without affecting its normal use. Whether used for power supply and signal transmission in mobile devices or in scenarios such as robots and automated production lines where frequent cable movement is required, it performs excellently and provides strong support for the stable operation of various devices.

[0041] Optionally, by Figure 1 and Figure 2 As shown in this embodiment, the support frame 2 is a thermoplastic EPDM elastomer. With the above solution, the thermoplastic EPDM elastomer has excellent flexibility during use, which allows the cable to be easily bent and twisted during movement.

[0042] In practical applications, such as robotic operations on industrial automated production lines, cables need to frequently change shape with the various movements of the robots. In this case, the thermoplastic EPDM elastomer support frame 2 can ensure that the cable will not suffer internal structural damage due to excessive bending. It can withstand repeated bending stress and is not prone to fatigue fracture even after long-term use, thus ensuring the service life and reliability of the cable.

[0043] Its excellent resistance to high and low temperatures is also a major advantage. In high-temperature environments, such as steel mills and foundries, the temperature may reach a high level. The thermoplastic EPDM elastomer will not soften, deform or lose elasticity due to high temperature, and can still maintain the structural stability of the supporting skeleton, effectively protecting the conductor 1. In cold environments, such as outdoor operations in the north or cold storage, it will not become hard and brittle, and can still maintain a certain degree of flexibility, allowing the cable to move and be used normally.

[0044] From a waterproof and dustproof perspective, thermoplastic EPDM elastomer itself has a certain degree of density. The core 1 is inserted into it, which can prevent the initial intrusion of moisture and dust to a certain extent. Furthermore, the spiral reinforcing ribs 21 on its outer wall further enhance this protective ability. The spiral reinforcing ribs 21 not only improve the overall strength of the support frame 2, but also increase the contact area and tightness between the inner silicone rubber sealing sleeve 3 and the support frame 2. When the inner silicone rubber sealing sleeve 3 is wrapped around the outside of the support frame 2, the spiral reinforcing ribs 21 can better guide the inner silicone rubber sealing sleeve 3 to fit evenly, forming a seamless sealing interface, effectively preventing moisture and dust from entering from the gap between the two.

[0045] Preferably, by Figure 1 , Figure 2 and Figure 4As shown, this embodiment also includes a shape memory alloy wire 6, which has a mounting hole 22 extending along its axial direction on the support frame 2. The shape memory alloy wire 6 is fixed in the mounting hole 22. With the above solution, when the cable encounters bending, stretching or other deformations during actual use, the shape memory alloy wire 6 will play its unique role. Due to the special memory effect of the shape memory alloy, when the bending degree of the cable exceeds a certain range or is subjected to a large tensile force, the shape memory alloy wire 6 will sense this deformation and attempt to recover to its preset shape when the temperature or other conditions are suitable. This gives the cable a certain self-repair capability and can recover to its original shape as much as possible after deformation, thereby effectively reducing internal structural damage caused by long-term deformation.

[0046] From the perspective of waterproofing and dustproofing, the presence of shape memory alloy wire 6 also helps to maintain the tight fit between the various layers of the cable structure. When the cable deforms, tiny gaps may appear between the inner silicone rubber sealing sleeve 3, the outer silicone rubber sealing sleeve 4 and the support skeleton 2, thereby reducing the waterproof and dustproof effect of the cable. However, in the process of the shape memory alloy wire 6 causing the cable to return to its original shape, the various layers of the structure can be tightly fitted again to ensure that the sealing performance is not affected.

[0047] In addition, the shape memory alloy wire 6 is fixed in the mounting hole 22 of the support frame 2, so that the shape memory alloy wire 6 can be tightly combined with the support frame 2 and work together. The mounting hole 22 provides a stable mounting position for the shape memory alloy wire 6, preventing it from shifting or shaking during cable movement, and ensuring that the shape memory alloy wire 6 can accurately sense the deformation of the cable and make corresponding responses.

[0048] Optionally, by Figure 1 As shown in this embodiment, the sheath layer 5 is a thermoplastic polyurethane elastomer. With the above solution, from the perspective of physical protection, TPU has excellent wear resistance during use. During the frequent movement of the cable, the sheath layer 5 will inevitably rub against surrounding objects, such as the floor of an industrial production workshop or the edge of mechanical equipment. Sheath layers made of ordinary materials may quickly wear out and break due to friction, thus affecting the protection of the internal structure. However, the TPU sheath layer 5, with its high wear resistance, can withstand long-term, high-intensity friction, greatly extending the service life of the cable.

[0049] TPU also has good tear resistance; when the cable is subjected to external force pulling or scratched by sharp objects, the sheath layer 5 is not easily torn.

[0050] In terms of waterproofing and dustproofing, TPU itself has good sealing properties. It can tightly wrap around the outside of the outer silicone rubber sealing sleeve 4, further enhancing the overall sealing performance of the cable. The molecular structure of TPU material is relatively dense, which can effectively prevent the intrusion of moisture and dust.

[0051] Optionally, by Figure 1 and Figure 3 As shown, in this embodiment, the wire core 1 includes: a metal conductor 11, an insulation layer 12, a shielding layer 13, and a silicone rubber sealing layer 14. The insulation layer 12 is wrapped around the outside of the wire core 1, the shielding layer 13 is wrapped around the outside of the insulation layer 12, and the silicone rubber sealing layer 14 is wrapped around the outside of the shielding layer 13. With the above solution, when in use, the metal conductor 11 serves as the core for transmitting current or signals, and the insulation layer 12 wraps around it, which can effectively prevent current leakage and corrosion of the conductor by external substances.

[0052] The shielding layer 13 is wrapped around the insulation layer 12. Its main function is to resist interference. The shielding layer 13 can shield external electromagnetic interference and prevent the signal transmitted by the metal conductor 11 from radiating outward, thus avoiding interference to other surrounding equipment.

[0053] The silicone rubber sealing layer 14 is wrapped around the shielding layer 13, which further enhances the waterproof and dustproof capabilities of the core 1. Silicone rubber has good flexibility, high and low temperature resistance and sealing performance. During the use of the cable, it can fit tightly against the shielding layer 13 to prevent moisture and dust from entering the core 1 through gaps.

[0054] Optionally, by Figure 1 and Figure 3 As shown in this embodiment, the wire core 1 is a silver-plated oxygen-free copper stranded wire. After adopting the above solution, when in use, the silver plating layer (thickness ≥ 2μm) effectively reduces the contact resistance of the conductor surface, making the DC resistivity of the wire core 1 about 8% lower than that of ordinary copper conductors. In high-frequency signal transmission, the skin effect is significantly suppressed, and the signal attenuation is reduced by more than 30%, which is particularly suitable for industrial control bus and high-speed data transmission scenarios.

[0055] Oxygen-free copper (purity ≥99.97%) has excellent anti-oxidation properties, and the silver plating layer further forms an electrochemical protective barrier. In the salt spray environment test, the conductor 1 still maintains a conductivity of more than 98.5% after continuous exposure for 1000 hours, which is far superior to ordinary tin-plated copper conductors.

[0056] Optionally, by Figure 1 and Figure 3As shown in this embodiment, the insulation layer 12 is a cross-linked polyethylene foam material. With the above solution, the cross-linked polyethylene foam material has excellent electrical insulation properties when in use. Its internal cell structure is uniform and dense, which can effectively hinder the conduction of current and greatly improve the insulation resistance. Even if the cable is used in a humid environment, such as underground cable trenches or humid workshops, the insulation layer 12 can still maintain a good insulation effect and ensure the normal operation of the cable.

[0057] In addition, the cross-linked polyethylene foam material has good flexibility, making the cable easier to bend and move. When the cable needs to be bent frequently as the equipment moves, the insulation layer 12 will not crack or be damaged due to excessive bending, thus ensuring the structural integrity of the cable.

[0058] Optionally, by Figure 1 and Figure 3 As shown in this embodiment, the shielding layer 13 is a copper-nickel alloy woven mesh. With the above scheme, when in use, alloy wires with a diameter of 0.1mm are used, and the weaving density is ≥98% to form a three-dimensional shielding layer 13. Copper-nickel alloy has excellent conductivity and permeability, and the shielding effectiveness in the 10kHz-3GHz frequency band reaches 102dB. In the complex electromagnetic environment of industrial sites, it can effectively suppress the interference generated by equipment such as frequency converters and motors.

[0059] Components not described in detail in this article are existing technologies.

[0060] The working principle and usage process of this utility model: The waterproof and dustproof mobile cable of this utility model has a core 1 as the core part of the cable for transmitting power or signals. It is safely wrapped in a support frame 2. The support frame 2 is made of thermoplastic elastomer material, which has good flexibility and elasticity and can effectively buffer the pressure and impact applied by the outside world to avoid damage to the core 1.

[0061] Meanwhile, the spiral reinforcing ribs 21 on the outer wall of the support frame 2 play a key reinforcing role. They not only enhance the overall strength of the support frame 2, enabling the cable to maintain a stable structure during frequent movement and bending, preventing the core 1 from breaking due to excessive bending or stretching, but also guide the inner silicone rubber sealing sleeve 3 to better fit the support frame 2 to a certain extent, ensuring the sealing effect.

[0062] The inner silicone rubber sealing sleeve 3 tightly wraps around the outside of the support frame 2. The silicone rubber material itself has excellent waterproof performance and can effectively prevent the intrusion of water. It fills the tiny gaps that may exist on the surface of the support frame 2, forming a reliable waterproof barrier to protect the core 1 from the influence of the humid environment.

[0063] The outer silicone rubber sealing sleeve 4 further enhances the cable's waterproof and dustproof capabilities. It wraps around the inner silicone rubber sealing sleeve 3, forming a second, robust defense. The properties of silicone rubber enable it to resist the intrusion of tiny particles such as dust and sand, preventing them from entering the cable and damaging the conductor 1.

[0064] The sheath layer 5 provides the final protection for the cable. It not only further enhances the mechanical strength of the cable, enabling it to withstand greater external impacts and friction, but also resists the corrosion of chemical substances such as acid and alkali solutions and oil stains.

[0065] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A waterproof and dustproof portable cable, comprising a conductor (1), characterized in that, Also includes: The support frame (2) is a thermoplastic elastomer, the wire core (1) is inserted into the support frame (2), and the outer wall of the support frame (2) has a spiral reinforcing rib (21). An inner silicone rubber sealing sleeve (3) is wrapped around the outside of the support frame (2); An outer silicone rubber sealing sleeve (4) is wrapped around the outside of the inner silicone rubber sealing sleeve (3); Sheath layer (5), the sheath layer (5) is wrapped around the outside of the outer silicone rubber sealing sleeve (4); Also includes: A shape memory alloy wire (6) has a mounting hole (22) extending along its axial direction on the support frame (2), and the shape memory alloy wire (6) is fixed in the mounting hole (22).

2. The waterproof and dustproof portable cable according to claim 1, characterized in that: The supporting frame (2) is a thermoplastic EPDM elastomer.

3. The waterproof and dustproof mobile cable according to claim 1, characterized in that: The sheath layer (5) is a thermoplastic polyurethane elastomer.

4. The waterproof and dustproof portable cable according to claim 1, characterized in that: The wire core (1) includes: Metallic conductor (11); An insulating layer (12) is wrapped around the outside of the wire core (1); A shielding layer (13) is wrapped around the outside of the insulating layer (12); A silicone rubber sealing layer (14) is wrapped around the outside of the shielding layer (13).

5. A waterproof and dustproof portable cable according to claim 4, characterized in that: The core (1) is a silver-plated oxygen-free copper stranded wire.

6. A waterproof and dustproof portable cable according to claim 4, characterized in that: The insulating layer (12) is a cross-linked polyethylene foam material.

7. A waterproof and dustproof portable cable according to claim 4, characterized in that: The shielding layer (13) is a copper-nickel alloy woven mesh.

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