High-folding-resistance cable structure

Abstract

The utility model relates to the field of cables, and provides a high-folding-resistance cable structure which comprises an outer sheath, a cable core, an insulating layer, a first kraft paper layer and a second kraft paper layer. The insulating layer wraps the wire core to form a wire; three wires, namely a first wire, a second wire and a third wire, are arranged in each cable structure. The insulating layer of the second wire is wrapped by the first kraft paper layer, and the first wire and the second wire are spaced through the first kraft paper layer. The second kraft paper layer wraps the three wires. And the outer sheath wraps the outer wall of the second kraft paper layer to provide protection. The method has the effects of reducing friction loss and improving folding resistance.

Description

Technical Field

[0001] The present application relates to the field of cables, and in particular to a highly fold-resistant cable structure. Background Art

[0002] As an important carrier for power and communication information transmission, cables play an irreplaceable role in various fields such as industry and civil use. The quality of their structure not only affects transmission efficiency and stability, but also their service life and safety. With the advancement of technology and the diversification of application needs,

[0003] Due to the usage environment, cables often need to be bent and vibrated for a long time, which may cause the multiple wire harnesses in the insulation layer to frequently rub against each other, resulting in damage to the surface. Summary of the Invention

[0004] In order to improve the above-mentioned problems, the present application provides a high folding-resistant cable structure.

[0005] The present application provides a high folding-resistant cable structure adopting the following technical solutions:

[0006] A highly fold-resistant cable structure comprises an outer sheath, a wire core, an insulating layer, a first kraft paper layer, and a second kraft paper layer; the insulating layer is wrapped around the wire core to form a conductor; a single cable structure comprises three conductors, namely a first conductor, a second conductor, and a third conductor; the insulating layer of the second conductor is wrapped around the first kraft paper layer, separating the first conductor from the second conductor by the first kraft paper layer; the second kraft paper layer wraps the three conductors; the outer sheath is wrapped around the outer wall of the second kraft paper layer to provide protection.

[0007] By adopting the above technical solution, the first kraft paper layer reduces the friction between the three wires, so that the degree of damage caused by mutual friction when the cable is bent or vibrated is reduced. The second kraft paper layer separates the outer sheath from the three wires, while ensuring the insulation protection properties, so that the insulation layer and the outer sheath are in contact with the wall of the second kraft paper layer, reducing the impact of friction.

[0008] Optionally, the first kraft paper layer is arranged in a spiral shape.

[0009] By adopting the above technical solution, the first kraft paper layer distributed in a spiral shape can provide a repair measure. If any position is damaged or broken, there is no need to replace the entire cable or the entire first kraft paper, but only a layer of the first kraft paper layer can be wound in a spiral shape.

[0010] Optionally, the three wires are arranged in parallel.

[0011] By adopting the above technical solution, the parallel arrangement can ensure that the second wire stably separates the first wire and the third wire, thereby reducing the material loss of the first kraft paper layer.

[0012] Optionally, the contact surface between the second kraft paper layer and the outer sheath is a friction surface.

[0013] By adopting the above technical solution, the friction surface can be used to make the contact between the outer sheath and the second kraft paper layer tighter and more stable, thereby preventing phenomena such as deviation or separation and improving the stability of the connection.

[0014] Optionally, a kraft paper spacing layer is further included; the kraft paper spacing layer is located between the first conductive wire and the second conductive wire, and between the second conductive wire and the third conductive wire.

[0015] By adopting the above technical solution, the contact friction between adjacent wires is further reduced through the kraft paper spacer layer, so that the loss between adjacent wires is smaller when bending or vibrating, thereby extending the service life while ensuring the insulation effect.

[0016] Optionally, arc-shaped openings are provided on both sides of the kraft paper spacer layer, and the arc-shaped openings fit with any wire.

[0017] By adopting the above technical solution, the arc-shaped opening is used to limit the position of the wire, so that the position of any wire is accurate and will not be offset. At the same time, the position of the kraft paper spacer is relatively limited, so that the position of the kraft paper spacer will not be offset when it is bent or vibrated.

[0018] Optionally, the kraft paper spacer layers are arranged in a group at a preset distance.

[0019] By adopting the above technical solution, arranging a group of kraft paper spacer layers at a preset distance can save more consumables, and can save consumables in the interval distance section.

[0020] Optionally, a guide protrusion is provided on the inner wall of the second kraft paper layer, and a fitting groove is provided on the surface of the kraft paper spacer layer opposite to the guide protrusion, and the guide protrusion fits in the fitting groove.

[0021] By adopting the above technical solution, the guide protrusion can make the connection between the kraft paper spacer layer and the second kraft paper layer more stable, and the guide protrusion can provide guidance and limiting effects on the kraft paper spacer layer, further preventing the position of the kraft paper spacer layer from shifting, and also making the installation more convenient and stable.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. The first kraft paper layer reduces the friction between the three wires, reducing the degree of damage caused by mutual friction when the cable is bent or vibrated. The second kraft paper layer separates the outer sheath from the three wires, ensuring insulation protection while allowing the insulation layer and the outer sheath to contact the wall of the second kraft paper layer, reducing the impact of friction.

[0024] 2. The spirally distributed first kraft paper layer can provide a repair measure. If any part is damaged or broken, there is no need to replace the entire cable or the entire first kraft paper. Instead, a layer of the first kraft paper layer can be wound in a spiral shape;

[0025] 3. The parallel arrangement enables the second conductor to stably separate the first conductor and the third conductor, reducing the material loss of the first kraft paper layer;

[0026] 4. The friction surface can make the contact between the outer sheath and the second kraft paper layer tighter and more stable, prevent the phenomenon of deviation or separation, and improve the stability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of a first cross-sectional structure of a cable in one embodiment of the present application;

[0028] Figure 2 This is a schematic diagram of a second cross-sectional structure of a cable in some embodiments of the present application;

[0029] Figure 3 Schematic diagram of the three-dimensional structure of the kraft paper spacer layer in some embodiments of the present application;

[0030] Figure 4 is a schematic diagram of a third cross-sectional structure of a cable in some embodiments of the present application;

[0031] The markings in the accompanying drawings are: 1, outer sheath, 2, wire core, 3, insulation layer, 4, first kraft paper layer, 5, second kraft paper layer, 51, guide protrusion, 6, first conductor, 7, second conductor, 8, third conductor, 9, kraft paper spacer layer, 91, arc-shaped mouth, 92, fitting groove. DETAILED DESCRIPTION

[0032] The following describes the embodiments of the present application through specific examples. Those skilled in the art can easily understand the other advantages and effects of the present application from the information disclosed in this application. The present application can also be implemented or applied through different specific embodiments. The details in this application can also be modified or changed according to different viewpoints and application systems without departing from the spirit of this application. It should be noted that the embodiments and features in the embodiments of this application can be combined with each other unless they conflict.

[0033] The following is a detailed description of the embodiments of the present application with reference to the accompanying drawings so that those skilled in the art can easily implement the present application. The present application can be embodied in many different forms and is not limited to the embodiments described herein.

[0034] In the description of this application, reference to the terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of this application. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and integrate different embodiments or examples described in this application, as well as features of different embodiments or examples, unless otherwise contradictory.

[0035] Furthermore, the terms "first" and "second" are used solely to indicate a target and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the context of this application, "plurality" means two or more, unless otherwise specifically defined.

[0036] Throughout this specification, when a device is said to be "connected" to another device, this includes not only "direct connection" but also "indirect connection" with other elements interposed therebetween. Furthermore, when a device is said to "include" a certain component, unless otherwise stated, this does not exclude the inclusion of other components but rather implies that the device may include other components.

[0037] The following is combined with Figure 1 -Attached Figure 4 , further details of this application are given.

[0038] The embodiments of the present application disclose a highly fold-resistant cable structure.

[0039] A highly fold-resistant cable structure suitable for installation environments with excessive bending points or where frequent bending is required.

[0040] refer to Figure 1 As shown, it includes an outer sheath 1, a core 2, an insulating layer 3, a first kraft paper layer 4 and a second kraft paper layer 5; the insulating layer 3 is wrapped around the core 2 to form a conductor. The insulating layer 3 can be made of PVC insulating material to provide protection and insulation for the core 2 to prevent leakage.

[0041] A single cable structure has three conductors, namely a first conductor 6, a second conductor 7 and a third conductor 8, through which data transmission or power transmission is provided.

[0042] The insulation layer 3 of the second conductor 7 is wrapped with a first kraft paper layer 4, which separates the first conductor 6 from the second conductor 7. The second kraft paper layer 5 wraps the three conductors. The first kraft paper layer 4 and the second kraft paper layer 5 both use insulating kraft paper as the isolation material, and the surface is covered with an insulating film on one side. The insulating film has a smooth property, which can reduce the friction between the insulating layers 3. If the first kraft paper layer 4 and the second kraft paper layer 5 are not provided, the surface friction coefficient of the insulating layers 3 of adjacent conductors is high, and mutual contact and friction can easily cause damage to the insulating layers 3, resulting in leakage and other problems.

[0043] After the first kraft paper layer 4 is set, the first kraft paper layer 4 wraps the second conductor 7, so that when bending, the first kraft paper layer 4 contacts the outer walls of the first conductor 6 and the third conductor 8. Since the surface of the first kraft paper layer 4 is smooth, the friction is reduced, so that when the cable is bent or vibrated, the degree of damage caused by mutual friction is reduced. The second kraft paper layer 5 covers the three conductors at the same time, so that when the three conductors are bent or vibrated, the various surfaces of the other three conductors are in contact with the second kraft paper layer 5, reducing the influence of the friction generated by the extrusion of the insulating layer 3 during bending or vibration. At the same time, the second kraft paper layer 5 also has an insulating effect, so that the cable can transmit electricity more safely.

[0044] The outer sheath 1 is wrapped around the outer wall of the second kraft paper layer 5 to provide protection. If the outer sheath 1 is not provided with the second kraft paper layer 5, the outer sheath 1 has a large friction coefficient and contacts the insulating layer 3 with a similarly large friction coefficient. Both are easily damaged by long-term bending or vibration, resulting in leakage. Therefore, the second kraft paper layer 5 separates the outer sheath 1 from the three wires, while ensuring the insulation protection properties, allowing the insulating layer 3 and the outer sheath 1 to contact the smooth wall of the second kraft paper layer 5, reducing the impact of friction.

[0045] Furthermore, not shown in the figure, the first kraft paper layer 4 is arranged in a spiral shape. The spirally distributed first kraft paper layer 4 can provide a repair measure. After damage or breakage at any position, there is no need to replace the entire cable or the entire first kraft paper. Instead, a layer of the first kraft paper layer 4 can be spirally wound. The other wound first kraft paper layer 4 can cover the damaged point, so that the insulation effect will not be affected.

[0046] Further, refer to Figure 1 As shown, the three wires are arranged in parallel. The parallel arrangement can ensure that the second wire 7 can stably separate the first wire 6 and the third wire 8. It is only necessary to wrap the first kraft paper layer 4 on the second wire 7 to prevent the first wire 6 and the third wire 8 from contacting each other, thereby reducing the material loss of the first kraft paper layer 4.

[0047] Furthermore, not shown in the figure, the contact surface between the second kraft paper layer 5 and the outer sheath 1 is a friction surface, and the friction coefficient of the friction surface is greater than the friction coefficient of the side close to the wire. The friction surface can make the contact between the outer sheath 1 and the second kraft paper layer 5 tighter and more stable, prevent deviation or detachment, and improve the stability of the connection.

[0048] In some embodiments, reference Figure 2 and Figure 3 As shown, a kraft paper spacer layer 9 is also included; the kraft paper spacer layer 9 can adopt a structure in which kraft paper is covered on both sides of insulating rubber. The insulating rubber not only ensures insulation but also provides a reset effect, so that when the kraft paper spacer layer 9 is squeezed or bent, it can be reset through the insulating rubber.

[0049] The kraft paper spacer 9 is located between the first wire 6 and the second wire 7, and between the second wire 7 and the third wire 8. The kraft paper spacer 9 is inserted into the gaps between the first wire 6 and the second wire 7, and between the second wire 7 and the third wire 8, so that the connections between the first wire 6 and the second wire 7, and between the second wire 7 and the third wire 8 are tighter and more stable. At the same time, the kraft paper spacer 9 further reduces the contact friction between adjacent wires, so that the adjacent wires suffer less loss during bending or vibration, thereby extending the service life while ensuring the insulation effect.

[0050] For further reference, Figure 3 As shown, arc-shaped openings 91 are provided on both sides of the kraft paper spacer layer 9, and the arc-shaped openings 91 fit with any conductor. The diameter and curvature of the arc-shaped openings 91 match the outer diameter and curvature of the conductor, so that the conductor can be embedded in the arc-shaped openings 91. The arc-shaped openings 91 are used to limit the conductor, so that the position of any conductor is accurate and will not be offset. At the same time, the position of the kraft paper spacer layer 9 is relatively limited, so that the position of the kraft paper spacer layer 9 will not be offset when it is bent or vibrated.

[0051] Furthermore, the kraft paper spacer layers 9 are arranged in a group at a preset distance. The kraft paper spacer layers 9 can be laid along the entire cable, or can be set in a group at a preset distance. Compared with laying along the entire cable, setting a group at a preset distance can save more consumables and save consumables in the interval distance segment. At the same time, there will be an interval space between adjacent wires in the interval distance segment, and the adjacent wires will not contact each other due to the interval space, thereby also ensuring safety and insulation performance.

[0052] Further, refer to Figure 3 and Figure 4As shown, the inner wall of the second kraft paper layer 5 is provided with a guide protrusion 51, which can be an arc-shaped protrusion, and the arc-shaped protrusion can be laid along the extension distance of the second kraft paper layer 5, and the kraft paper spacer layer 9 is provided with a fitting groove 92 on the opposite side of the guide protrusion 51. The style of the fitting groove 92 is the same as that of the guide protrusion 51, and both can adopt an inward concave arc-shaped groove type, so that the guide protrusion 51 is fitted with the fitting groove 92, and the kraft paper spacer layer 9 can move along the guide protrusion 51 through the fitting groove 92.

[0053] The guide protrusion 51 can stabilize the connection between the kraft paper spacer layer 9 and the second kraft paper layer 5, and can provide guidance and limiting effects on the kraft paper spacer layer 9 through the guide protrusion 51, further preventing the position of the kraft paper spacer layer 9 from shifting, while also making the installation more convenient and stable.

[0054] The examples of this specific embodiment are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of this application should be included in the scope of protection of this application.

Claims

1. A high folding-resistant cable structure, characterized in that: The cable comprises an outer sheath (1), a wire core (2), an insulating layer (3), a first kraft paper layer (4) and a second kraft paper layer (5); the insulating layer (3) is wrapped around the wire core (2) to form a conductor; a single cable structure is provided with three conductors, namely a first conductor (6), a second conductor (7) and a third conductor (8); the insulating layer (3) of the second conductor (7) is wrapped around the first kraft paper layer (4), and the first conductor (6) and the second conductor (7) are separated by the first kraft paper layer (4); the second kraft paper layer (5) wraps the three conductors; the outer sheath (1) is wrapped around the outer wall of the second kraft paper layer (5) to provide protection.

2. A high folding-resistant cable structure according to claim 1, characterized in that: The first kraft paper layer (4) is arranged in a spiral shape.

3. The high folding-resistant cable structure according to claim 1, characterized in that: The three wires are arranged in parallel.

4. The high folding-resistant cable structure according to claim 1, characterized in that: The contact surface between the second kraft paper layer (5) and the outer sheath (1) is a friction surface.

5. The high folding-resistant cable structure according to claim 1, characterized in that: It also includes a kraft paper spacing layer (9); the kraft paper spacing layer (9) is located between the first conductive wire (6) and the second conductive wire (7), and between the second conductive wire (7) and the third conductive wire (8).

6. A high folding-resistant cable structure according to claim 5, characterized in that: Arc-shaped openings (91) are provided on both sides of the kraft paper spacer layer (9), and the arc-shaped openings (91) are adapted to fit any conductor.

7. A high folding-resistant cable structure according to claim 6, characterized in that: The kraft paper spacer layers (9) are arranged in groups at a preset distance.

8. A high folding-resistant cable structure according to claim 7, characterized in that: The inner wall of the second kraft paper layer (5) is provided with a guide protrusion (51), and the surface of the kraft paper spacer layer (9) opposite to the guide protrusion (51) is provided with a fitting groove (92), and the guide protrusion (51) is fitted with the fitting groove (92).

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