Compression enhanced cable

Abstract

This utility model discloses a pressure-resistant reinforced cable, which includes a conductor, an insulation layer, and an outer sheath layer. The insulation layer covers the surface of the conductor, and the outer sheath layer is fitted over the outside of the insulation layer. Based on this, the pressure-resistant reinforced cable also includes a reinforcing skeleton disposed between the insulation layer and the outer sheath layer. The reinforcing skeleton is configured as a continuous arched corrugated layer structure covering the outside of the insulation layer, and includes several crests and several troughs. Each crest abuts outward to the inner surface of the outer sheath layer, and each trough abuts inward to the outer surface of the insulation layer. The crests of the pressure-resistant reinforced cable serve as the initial pressure-bearing points, decomposing concentrated loads into normal pressure and tangential shear force. The crests transmit pressure to the troughs through axial compression deformation, and then the troughs transmit pressure vertically to the insulation layer. This process effectively avoids localized stress concentration in the conductor.

Description

Technical Field

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

[0002] Cables are carriers of electrical energy or signals, with a conductor at their core and a multi-layered protective structure. Their basic structure includes a conductor (metallic materials such as copper / aluminum), an insulation layer (polymers such as PVC / XLPE), a shielding layer (metal braided tape or foil), and an outer sheath (flame-retardant and weather-resistant material). The core functions of cables mainly include: power transmission (transmitting electrical energy, such as household cables and high-voltage transmission lines); signal transmission (transmitting data / optical signals, such as network cables, optical fibers, and coaxial cables); and composite functions (simultaneously transmitting power and signals, such as robot drag chain cables). Taking power cables as an example, their layered structure from the inside out includes a conductor, a shielding layer, an insulation layer, an optional insulating shielding layer, a metallic shielding layer, a filler layer, an inner sheath, an optional armor layer, and an outer sheath, thus forming the basic structure of a power cable.

[0003] Modern cable technology faces three core challenges: electrical performance (such as high-frequency signal attenuation and electromagnetic interference), mechanical reliability (resistance to pressure, bending, and fatigue), and environmental adaptability (temperature resistance and corrosion resistance). Especially in high-dynamic scenarios (such as robots and charging of new energy vehicles) and harsh environments (mining and offshore platforms), traditional armored cables, due to the heavy weight of their metal materials, poor flexibility, and susceptibility to corrosion, struggle to balance mechanical strength with lightweight requirements. Therefore, it is necessary to improve the design to address the bottlenecks in the pressure resistance of existing cables. Utility Model Content

[0004] Therefore, it is necessary to provide a pressure-enhanced cable to address the technical problem of insufficient compressive strength of existing cables.

[0005] A pressure-resistant reinforced cable includes a conductor, an insulation layer, and an outer sheath layer. The insulation layer covers the surface of the conductor, and the outer sheath layer is sleeved on the outside of the insulation layer. Based on this, the pressure-resistant reinforced cable also includes a reinforcing skeleton disposed between the insulation layer and the outer sheath layer.

[0006] The reinforcing skeleton is configured as a continuous arched corrugated layer structure covering the outside of the insulation layer. The reinforcing skeleton includes several extended crests and several troughs arranged alternately. Each crest abuts outward to the inner surface of the outer sheath layer, and each trough abuts inward to the outer surface of the insulation layer. Based on this, a certain range of deformation space is formed between each crest and the insulation layer, and a certain range of deformation space is formed between each trough and the outer sheath layer.

[0007] In one embodiment, the arched corrugated structure of the aforementioned reinforcing skeleton can be configured as either a sine wave or a trapezoidal wave.

[0008] In one embodiment, when the compression-resistant reinforced cable is configured as a cylindrical cable, the arch height of the arched corrugated structure of the reinforcing skeleton is set to 0.15-0.3 times the cable diameter.

[0009] In one embodiment, when the compression-resistant reinforced cable is configured as a flat cable, the arch height of the arched corrugated structure of the reinforcing skeleton is set to 0.15-0.3 times the cable thickness.

[0010] In one embodiment, the crest spacing between adjacent crests is set to 1.2-2 times the arch height.

[0011] In one embodiment, the arched structure of the aforementioned reinforcing skeleton is configured as an asymmetrical waveform structure, wherein the crest portion is configured as a gently sloping arched structure compared to the trough portion.

[0012] In one embodiment, the radius of curvature of each wave crest is set to 1.5 times the thickness of the reinforcing skeleton wall, and the radius of curvature of each wave trough is set to 0.5-0.8 times the thickness of the reinforcing skeleton wall.

[0013] In one embodiment, the width ratio of the crest portion to the trough portion is 1:1.2-1.5.

[0014] In one embodiment, each of the aforementioned troughs has a plurality of serrated protrusions on its contact surface with the insulating layer and is embedded in the insulating layer, so that the reinforcing skeleton forms a mechanical interlock between the insulating layers.

[0015] In one embodiment, the aforementioned pressure-resistant reinforced cable further includes a thermoplastic adhesive layer disposed between the reinforcing skeleton and the insulation layer.

[0016] In one embodiment, the aforementioned hot melt adhesive layer is melt-filled into the micro-gap between the reinforcing skeleton and the insulating layer during EVA hot melt adhesive extrusion lamination.

[0017] In practical applications, the aforementioned pressure-reinforced cable transmits external pressure sequentially through the outer sheath, the crests, the skeleton sidewalls between the crests and troughs, the troughs, and the insulation layer to the conductor. During this pressure transmission process, the crests, as the initial pressure-bearing points, decompose the concentrated load into normal pressure and tangential shear force. The crests transmit pressure to the troughs through axial compression deformation, and then the troughs transmit the pressure vertically to the insulation layer. This process effectively avoids localized stress concentration in the conductor. Simultaneously, the gap between the crests and the insulation layer allows the arched sidewalls to elastically bend inward, thereby enhancing the absorption capacity against external impacts; the gap between the troughs and the outer sheath provides space for overall arched compression displacement, thereby increasing the maximum deformation of the outer sheath and the reinforcing skeleton. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a pressure-reinforced cable in one embodiment; Figure 2 for Figure 1 An enlarged structural schematic diagram of part M in the illustrated embodiment; Figure 3 for Figure 2 An enlarged structural diagram of part N in the illustrated embodiment. Detailed Implementation

[0019] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0020] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0024] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0025] Please see Figures 1 to 3This utility model discloses a pressure-resistant reinforced cable 1, which includes a conductor 10, an insulation layer 20, and an outer sheath layer 30. The insulation layer 20 covers the surface of the conductor 10, and the outer sheath layer 30 is sleeved on the outside of the insulation layer 20. Based on this, the pressure-resistant reinforced cable 1 also includes a reinforcing skeleton 40, which is disposed between the insulation layer 20 and the outer sheath layer 30 to enhance the pressure resistance of the cable. Specifically, the reinforcing skeleton 40 is configured as a continuous arched corrugated layer structure covering the outside of the insulation layer 20. The reinforcing skeleton 40 includes several wave crests 41 and several wave troughs 42 that extend alternately. Each wave crest 41 abuts against the inner surface of the outer sheath layer 30 outward, and each wave trough 42 abuts against the outer surface of the insulation layer 20 inward. Based on this, a certain range of deformation space is formed between each wave crest 41 and the insulation layer 20, and a certain range of deformation space is formed between each wave trough 42 and the outer sheath layer 30. This allows the reinforcing skeleton 40 to disperse and absorb pressure through a certain range of deformation when subjected to external pressure, thereby strengthening the cable's compressive strength. In summary, in practical applications, the external pressure of the pressure-reinforced cable 1 of this invention is sequentially transmitted to the conductor 10 through the outer sheath 30, the crest 41, the skeleton sidewall between the crest 41 and the trough 42, the trough 42, and the insulation layer 20. During this pressure transmission process, the crest 41, as the initial pressure-bearing point, can decompose the concentrated load into normal pressure and tangential shear force. The crest 41 transmits the pressure to the trough 42 through axial compression deformation, and then the trough 42 transmits the pressure vertically to the insulation layer 20. This process effectively avoids local stress concentration in the conductor 10. At the same time, the gap between the crest 41 and the insulation layer 20 allows the arched sidewall to elastically bend inward, thereby enhancing the absorption capacity against external impacts; the gap between the trough 42 and the outer sheath 30 provides space for the overall arched compression displacement, thereby increasing the maximum deformation of the outer sheath 30 and the reinforcing skeleton 40.

[0026] Furthermore, in one embodiment, the arched corrugated structure of the reinforcing skeleton 40 can be configured as either a sine wave or a trapezoidal wave.

[0027] Furthermore, in one embodiment, when the compression-resistant reinforced cable 1 is configured as a cylindrical cable, the arch height of the arched corrugated structure of the reinforcing skeleton 40 is set to 0.15-0.3 times the cable diameter; in another embodiment, when the compression-resistant reinforced cable 1 is configured as a flat cable, the arch height of the arched corrugated structure of the reinforcing skeleton 40 is set to 0.15-0.3 times the cable thickness.

[0028] Furthermore, in one embodiment, the crest spacing between adjacent crest portions 41 is set to 1.2-2 times the arch height.

[0029] Furthermore, in one embodiment, the arched structure of the reinforcing skeleton 40 is configured as an asymmetrical waveform structure, wherein the crest portion 41 is configured as a gently sloping arched structure compared to the trough portion 42. Specifically, in this embodiment, the radius of curvature of each crest portion 41 is set to 1.5 times the wall thickness of the reinforcing skeleton 40, and the radius of curvature of each trough portion 42 is set to 0.5-0.8 times the wall thickness of the reinforcing skeleton 40. In another embodiment, the width ratio of the crest portion 41 to the trough portion 42 is 1:1.2-1.5. Based on this, the pressure on the crest portion 41 can be effectively dispersed, avoiding stress concentration that could lead to cracking of the crest portion 41, and optimizing the uniformity of pressure distribution.

[0030] Furthermore, in one embodiment, each trough portion 42 has a plurality of serrated protrusions 421 on its contact surface with the insulating layer 20 and is embedded in the insulating layer 20, so that the reinforcing skeleton 40 forms a mechanical interlock between the insulating layer 20, thereby enhancing the connection stability between the reinforcing skeleton 40 and the insulating layer 20 and preventing the reinforcing skeleton 40 from slipping relative to the insulating layer 20.

[0031] Furthermore, the compression-reinforced cable 1 also includes a hot-melt adhesive layer 50, which is disposed between the reinforcing skeleton 40 and the insulation layer 20 to further bond the reinforcing skeleton 40 and the insulation layer 20. In one embodiment, the hot-melt adhesive layer 50 is melt-filled into the micro-gaps between the reinforcing skeleton 40 and the insulation layer 20 during EVA hot-melt adhesive extrusion lamination.

[0032] In summary, the pressure-reinforced cable disclosed in this invention, in practical applications, transmits external pressure sequentially through the outer sheath, the crest, the skeleton sidewall between the crest and trough, the trough, and the insulation layer to the conductor. During this pressure transmission process, the crest, as the initial pressure-bearing point, decomposes the concentrated load into normal pressure and tangential shear force. The crest transmits pressure to the trough through axial compression deformation, and then the trough vertically transmits the pressure to the insulation layer. This process effectively avoids localized stress concentration in the conductor. Simultaneously, the gap between the crest and the insulation layer allows the arched sidewall to elastically bend inward, thereby enhancing the absorption capacity against external impacts; the gap between the trough and the outer sheath provides space for overall arched compression displacement, thereby increasing the maximum deformation of the outer sheath and the reinforcing skeleton.

[0033] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0034] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A pressure-resistant reinforced cable, characterized in that, include: The conductor, the insulation layer, and the outer sheath layer are provided. The insulation layer covers the surface of the conductor, and the outer sheath layer is fitted over the outside of the insulation layer. Based on this, the compression-strengthened cable also includes a reinforcing skeleton, which is disposed between the insulation layer and the outer sheath layer; The reinforcing skeleton is configured as a continuous arched corrugated layer structure covering the outside of the insulation layer. The reinforcing skeleton includes several extended crests and several troughs arranged alternately. Each crest abuts outward to the inner surface of the outer sheath layer, and each trough abuts inward to the outer surface of the insulation layer. Based on this, a certain range of deformation space is formed between each crest and the insulation layer, and a certain range of deformation space is formed between each trough and the outer sheath layer. Each trough has several serrated protrusions on the contact surface with the insulation layer, which are embedded in the insulation layer, so that the reinforcing skeleton forms a mechanical interlock between the insulation layers. The compression-strengthened cable also includes a thermoplastic bonding layer, which is disposed between the reinforcing skeleton and the insulation layer.

2. The compression-resistant reinforced cable according to claim 1, characterized in that, The arched corrugated structure of the reinforcing skeleton can be configured as either a sine wave or a trapezoidal wave.

3. The compression-resistant reinforced cable according to claim 2, characterized in that, When the compression-strengthened cable is configured as a cylindrical cable, the arch height of the arched corrugated structure of the reinforcing skeleton is set to 0.15-0.3 times the cable diameter.

4. The compression-resistant reinforced cable according to claim 2, characterized in that, When the compression-strengthened cable is set as a flat cable, the arch height of the arched corrugated structure of the reinforcing skeleton is set to 0.15-0.3 times the cable thickness.

5. The compression-resistant reinforced cable according to claim 2, characterized in that, The crest spacing between adjacent crests is set to 1.2-2 times the arch height.

6. The compression-resistant reinforced cable according to claim 1, characterized in that, The arched structure of the reinforcing skeleton is set as an asymmetrical waveform structure, wherein the crest is set as a gentler arched structure compared to the trough.

7. The compression-resistant reinforced cable according to claim 6, characterized in that, The radius of curvature of each crest is set to 1.5 times the thickness of the reinforcing skeleton wall, and the radius of curvature of each trough is set to 0.5-0.8 times the thickness of the reinforcing skeleton wall.

8. The compression-resistant reinforced cable according to claim 7, characterized in that, The width ratio of the crest to the trough is 1:1.2-1.5.

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