Bending-resistant wire cable for building

Abstract

The utility model relates to a building bending-resistant wire cable, which comprises a wire core, an insulating layer, a shielding layer and a protection layer, a bending-resistant structure is arranged between the protection layer and the shielding layer, the bending-resistant structure comprises deformation ribs arranged at intervals in the circumferential direction, and each deformation rib comprises a connection section, an inclined section and an extension section which are sequentially connected from outside to inside; and the connection section, the inclined section and the extension section all extend towards the extension direction of the wire core. The deformation rib is divided into three sections through the connecting section, the inclined section and the extending section which are connected with one another, and compared with a one-section type deformation rib, the deformation rib has higher deformation capacity to resist bending acting force, so that the electric wire and cable has higher bending resistance, the situation that the electric wire and cable cracks due to bending and twisting is reduced, and the service life of the electric wire and cable is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of electric wires and cables, and in particular to a bending-resistant electric wire and cable for construction. Background Art

[0002] In recent years, with the development of social economy, the power and telecommunication industries have penetrated into daily life, and cables, as carriers of signal transmission, have been widely used. Wires and cables mainly include bare wires, electromagnetic wires, insulated wires for motors and electrical appliances, power cables, communication cables and optical cables.

[0003] The existing Chinese patent with publication number CN107331450A discloses an impact-resistant wire and cable, including a first outer sheath, an inner sheath, a shielding layer, at least one insulating layer and at least one conductor, the insulating layer surrounds the conductor, the shielding layer surrounds the insulating layer, the first outer sheath surrounds the shielding layer, and the inner sheath is filled between the outer sheath and the shielding layer.

[0004] Regarding the above-mentioned related technologies, the applicant believes that some current wires and cables may be bent and twisted during use, and the wires and cables themselves have poor performance, which can easily cause the wires and cables to crack and shorten their service life. Therefore, there is still room for improvement. Utility Model Content

[0005] In order to improve the bending resistance of wires and cables, reduce cracking due to bending and twisting, and extend the service life of wires and cables, the present application provides a bending-resistant wire and cable for construction.

[0006] The present application provides a bending-resistant wire and cable for construction that adopts the following technical solution:

[0007] A bending-resistant wire and cable for construction, comprising a wire core, an insulating layer, a shielding layer and a protective layer, an anti-bending structure is arranged between the protective layer and the shielding layer, the anti-bending structure comprises deformation ribs arranged at circumferential intervals, the deformation ribs comprise a connecting section, an inclined section and an extension section which are sequentially connected from the outside to the inside; the connecting section, the inclined section and the extension section all extend in the extension direction of the wire core.

[0008] By adopting the above technical solution, the deformation ribs are arranged into three sections through interconnected connecting sections, inclined sections and extension sections. Compared with the one-section deformation ribs, they have higher deformation capacity to resist bending force, so that the wires and cables have higher bending resistance, reduce cracking due to bending and twisting, and extend the service life of the wires and cables.

[0009] Preferably, the slope of the inclined section is greater than that of the connecting section and the extending section.

[0010] By adopting the above technical solution, the slope of the inclined section is the largest, and the distance between the connecting section and the extension section can be extended, thereby having a larger range for overcoming deformation and improving the bending resistance.

[0011] Preferably, the anti-bending structure further includes a support member located between adjacent deformation ribs in the extension direction of the wire core.

[0012] By adopting the above technical solution, in addition to the deformation ribs, the stability of the protective layer disposed outside the shielding layer is further maintained by the support member.

[0013] Preferably, the support member is a vertically arranged deformable support bar.

[0014] By adopting the above technical solution, the support bars play the role of supporting the protective layer, thereby improving the longitudinal supporting strength of the protective layer outside the shielding layer.

[0015] Preferably, the support bars are relatively arranged between adjacent deformation ribs.

[0016] By adopting the above technical solution, the relatively vertical support bars can effectively improve the longitudinal support strength.

[0017] Preferably, a plurality of teeth are arranged on a side wall of the opposite support bars, and the teeth of the opposite support bars mesh with each other.

[0018] By adopting the above technical solution, the teeth on the relative support bars engage with each other, which can increase the bending resistance when the wires and cables are bent and deformed, thereby effectively improving the deformation resistance and the bending resistance.

[0019] Preferably, the protective layer is highly tear-resistant silicone rubber.

[0020] By adopting the above technical solution, the bending resistance of the protective layer is improved by using high tear-resistant silicone rubber material.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] The deformable ribs are divided into three sections by interconnecting the connecting section, the inclined section and the extension section. Compared with the one-section deformable ribs, the deformable ribs have a higher deformation capacity to resist the bending force, so that the wires and cables have a higher bending resistance, reduce the cracking caused by bending and twisting, and extend the service life of the wires and cables;

[0023] The slope of the inclined section is the largest, and the distance between the connecting section and the extension section can be extended, thereby having a larger range to overcome deformation and improving the bending resistance effect; in addition to the deformation ribs, the protective layer is further supported by the deformable support strips to maintain the stability of the protective layer set outside the shielding layer;

[0024] The relative vertical support bars can effectively improve the longitudinal support strength; by engaging the teeth on the relative support bars, the bending resistance can be increased when the wires and cables are bent, thereby effectively improving the deformation resistance and bending resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic cross-sectional view of the electric wire and cable of an embodiment of the present application;

[0026] Figure 2 It is a schematic diagram of the partial structure of the deformation ribs and support members of the embodiment of the present application.

[0027] Explanation of the reference numerals: 1. wire core; 2. insulation layer; 3. shielding layer; 4. protective layer; 5. anti-bending structure; 51. deformation rib; 52. support member; 6. connecting section; 7. inclined section; 8. extension section; 9. support bar; 91. toothed block. DETAILED DESCRIPTION

[0028] The present application is further described in detail below in conjunction with the accompanying drawings.

[0029] The present application embodiment discloses a bending-resistant wire and cable for construction, referring to Figure 1 , including a wire core 1, an insulating layer 2, a shielding layer 3 and a protective layer 4, wherein the protective layer 4 is a highly tear-resistant silicone rubber to improve the bending resistance of the protective layer 4.

[0030] Reference Figure 1 , 2 An anti-bending structure 5 is provided between the protective layer 4 and the shielding layer 3. The anti-bending structure 5 includes deformation ribs 51 arranged at circumferential intervals. The deformation ribs 51 include a connecting section 6, an inclined section 7 and an extension section 8 which are sequentially connected from the protective layer 4 to the shielding layer 3. The interconnected connecting section 6, the inclined section 7 and the extension section 8 divide the deformation rib 51 into three sections, which have higher deformation capacity than the one-section deformation rib 51, thereby having higher bending resistance.

[0031] Reference Figure 1 , 2 The connecting section 6, the inclined section 7 and the extending section 8 all extend in the extending direction of the wire core 1, so that the setting of the connecting section 6, the inclined section 7 and the extending section 8 is coordinated with the extension of the wire and cable and the direction in which bending is prone to occur, thereby effectively overcoming the bending force of the wire and cable and improving the bending resistance.

[0032] Reference Figure 2 The slope of the inclined section 7 is greater than that of the connecting section 6 and the extending section 8, so that the distance between the connecting section 6 and the extending section 8 can be extended, thereby having a larger range for overcoming deformation and improving the bending resistance effect.

[0033] Reference Figure 1 , 2The anti-bending structure 5 also includes a support member 52 located between adjacent deformation ribs 51 in the extension direction of the wire core 1. The support member 52 is a vertically arranged deformable support bar 9. The support bar 9 improves the longitudinal support strength of the protective layer 4 outside the shielding layer 3 and maintains the stability of the protective layer 4 arranged outside the shielding layer 3.

[0034] Reference Figure 2 The support bars 9 are relatively arranged between adjacent deformation ribs 51 to further improve the longitudinal support strength; a plurality of toothed blocks 91 are arranged on a side wall close to the relative support bars 9, and the toothed blocks 91 of the relative support bars 9 are meshed with each other. The toothed blocks 91 on the relative support bars 9 are meshed with each other, which can increase the bending resistance when the wires and cables are bent and deformed, thereby effectively improving the deformation resistance and the bending resistance.

[0035] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A bending-resistant wire and cable for construction, comprising a wire core (1), an insulating layer (2), a shielding layer (3) and a protective layer (4), characterized in that: An anti-bending structure (5) is provided between the protective layer (4) and the shielding layer (3), the anti-bending structure (5) comprising deformation ribs (51) arranged at circumferential intervals, the deformation ribs (51) comprising a connecting section (6), an inclined section (7) and an extension section (8) which are sequentially connected from the outside to the inside; the connecting section (6), the inclined section (7) and the extension section (8) all extend in the extension direction of the wire core (1).

2. The bending-resistant wire and cable for construction according to claim 1, characterized in that: The slope of the inclined section (7) is greater than that of the connecting section (6) and the extending section (8).

3. The bending-resistant wire and cable for construction according to claim 1, characterized in that: The anti-bending structure (5) further comprises a support member (52) located between adjacent deformation ribs (51) in the extension direction of the wire core (1).

4. The bending-resistant wire and cable for construction according to claim 3, characterized in that: The support member (52) is a vertically arranged deformable support bar (9).

5. The bending-resistant wire and cable for construction according to claim 4, characterized in that: The support bars (9) are arranged opposite to each other between adjacent deformation ribs (51).

6. The bending-resistant wire and cable for construction according to claim 5, characterized in that: The opposite support bars (9) are provided with a plurality of teeth close to one side wall, and the teeth of the opposite support bars (9) are meshed with each other.

7. The bending-resistant wire and cable for construction according to claim 1, characterized in that: The protective layer (4) is highly tear-resistant silicone rubber.

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