Bending-resistant cable

Abstract

The utility model discloses a bending-resistant cable, which comprises an insulating layer, an inner conductor, a first shielding assembly and a second shielding assembly, and is characterized in that the insulating layer is a flexible flat structural member; the inner conductor is embedded in the insulating layer; the first shielding assemblies are arranged on two sides of the insulating layer in the thickness direction; the second shielding assemblies are arranged on the insulating layer and located on the two sides of the inner conductor. And the second shielding assembly comprises a plurality of shielding bodies which are uniformly arranged along the length direction of the insulating layer. According to the utility model, the insulating layer is a flexible flat structural member, and can be greatly bent along the thickness direction of the insulating layer during application; moreover, because the second shielding assembly is composed of a plurality of uniformly arranged shielding bodies, when the bending-resistant cable is bent, the relative position and state between two adjacent shielding bodies are changed along with the bending of the cable, so that the second shielding assembly does not bear stress, and therefore, the bending-resistant cable can be repeatedly and greatly bent, and the bending resistance of the bending-resistant cable is improved. And the device can be applied to narrow spaces such as thin notebook computers, portable equipment and the like.

Description

Technical Field

[0001] The utility model relates to the field of cable structures, and particularly to a bend-resistant cable. Background Art

[0002] In modern communication technologies, coaxial cables are widely used in various electronic devices and communication systems due to their excellent signal transmission performance. A coaxial cable consists of an inner conductor, an insulating layer, an outer conductor (shielding layer), and an outer sheath. The insulating layer between the inner conductor and the outer conductor needs to maintain a certain thickness to ensure stable signal transmission. Meanwhile, the outer conductor is usually made of metal to provide electromagnetic shielding. This structural design makes the coaxial cable have a certain minimum bending radius. During installation and use, the degree of bending cannot exceed this minimum bending radius, otherwise it may damage the internal structure of the cable, especially the insulating layer and the shielding layer, thereby affecting the signal integrity and the performance of the cable.

[0003] With the increasing requirements for transmission speed of electronic devices, the performance requirements for coaxial cables also increase accordingly. To improve the transmission capacity of coaxial cables, the diameters of the inner conductor and the outer conductor are usually increased in the prior art, resulting in a gradual increase in the minimum bending radius of the coaxial cable, making it difficult to be applied in narrow application scenarios such as thin laptops and portable devices. Summary of the Utility Model

[0004] Embodiments of the utility model provide a bend-resistant cable to solve the problem that the existing coaxial cable has a large minimum bending radius and is difficult to be applied in narrow application scenarios.

[0005] Specifically, the utility model provides a bend-resistant cable, including:

[0006] An insulating layer, which is a flexible flat structural member;

[0007] An inner conductor, which is embedded in the insulating layer;

[0008] A first shielding component, which is arranged on both sides in the thickness direction of the insulating layer and is used for shielding external interference signals;

[0009] A second shielding component, which is arranged on the insulating layer and is located on both sides of the inner conductor in the width direction of the insulating layer; the second shielding component includes a plurality of shielding bodies uniformly arranged along the length direction of the insulating layer.

[0010] Optionally, the first shielding component includes two copper foils located on both sides of the insulating layer, and the copper foils are compounded on the insulating layer.

[0011] Optionally, the bend-resistant cable further includes a fixing hole penetrating through the copper foil and the insulating layer, and the shielding body is in interference fit in the fixing hole.

[0012] Optionally, the number of the fixing holes is multiple; in the width direction of the insulating layer, the fixing holes are symmetrically arranged on both sides of the inner conductor, and the fixing holes on each side are uniformly arranged along the length direction of the insulating layer, and the interval between two adjacent fixing holes is 0.5 mm - 5 mm.

[0013] Optionally, the thickness of the copper foil is 1.5 μm - 500 μm;

[0014] And / or, the diameter of the fixing hole is 0.1 mm - 0.2 mm.

[0015] Optionally, the shielding body is a columnar structural member made of a metal material, graphene or conductive adhesive.

[0016] Optionally, the shielding body is a tubular structural member made of a metal material.

[0017] Optionally, a graphene column or a conductive adhesive column is arranged in the tubular structural member.

[0018] Optionally, the inner conductor includes a copper wire, and the copper wire extends along the length direction of the insulating layer;

[0019] Or, the inner conductor includes a plurality of copper wires, each copper wire extends along the length direction of the insulating layer, and the plurality of copper wires are arranged at intervals in the width direction of the insulating layer;

[0020] The diameter of the copper wire is not less than 0.015 mm.

[0021] Optionally, a sleeve is sleeved on the copper wire, and the sleeve is located between the copper wire and the insulating layer.

[0022] The beneficial effects of the present utility model are as follows:

[0023] In the bend-resistant cable provided by the present utility model, since the insulating layer is a flexible flat structural member, it can be bent significantly along its thickness direction during application; and since the second shielding assembly is composed of a plurality of uniformly arranged shielding bodies, when the bend-resistant cable is bent, the relative positions and states between adjacent shielding bodies change with the bending of the cable, so that the second shielding assembly does not bear stress, and therefore it can be bent repeatedly and significantly and can be applied to narrow spaces such as thinner laptops and portable devices. Description of the Drawings

[0024] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for the description of the embodiments of the present invention. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0025] Figure 1 is a schematic cross-sectional view of a bend-resistant cable in an embodiment of the present invention;

[0026] Figure 2 is a schematic cross-sectional view of a bend-resistant cable in an embodiment of the present invention;

[0027] Figure 3 is a schematic structural view of a bend-resistant cable in an embodiment of the present invention;

[0028] Figure 4 is a schematic structural view of a bend-resistant cable in an embodiment of the present invention.

[0029] In the figure: 100, insulating layer; 200, inner conductor; 300, first shielding component; 400, second shielding component; 410, shielding body; 500, fixing hole; 600, sleeve. Detailed implementation manners

[0030] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0031] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

[0032] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] Figure 1 is a schematic cross-sectional view of a bend-resistant cable in an embodiment of the present utility model, as Figure 1 shown, and with reference to Figures 2 to 4 , an embodiment of the present utility model provides a bend-resistant cable, including an insulating layer 100, an inner conductor 200, a first shielding assembly 300, and a second shielding assembly 400. The insulating layer 100 is a flexible flat structural member; the inner conductor 200 is embedded in the insulating layer 100; the first shielding assembly 300 is disposed on both sides in the thickness direction of the insulating layer 100 for shielding external interference signals; the second shielding assembly 400 is disposed on the insulating layer 100 and is located on both sides of the inner conductor 200 in the width direction of the insulating layer 100; the second shielding assembly 400 includes a plurality of shielding bodies 410 uniformly arranged along the length direction of the insulating layer 100.

[0034] In an embodiment of the present utility model, the inner conductor 200 is used for transmitting signals, the first shielding assembly 300 and the second shielding assembly 400 are used for shielding external interference signals, and the insulating layer 100 separates the inner conductor 200 from the first shielding assembly 300 and the second shielding assembly 400. Since the insulating layer 100 is a flexible flat structural member, it can be bent significantly along its thickness direction during application; and since the second shielding assembly 400 is composed of a plurality of uniformly arranged shielding bodies 410, when the bend-resistant cable is bent, the relative positions and states between adjacent two shielding bodies 410 change with the bending of the cable, so that the second shielding assembly 400 does not bear stress. Therefore, it can be bent significantly repeatedly and can be applied in narrow spaces such as thin laptops and portable devices.

[0035] In an embodiment of the present utility model, the first shielding assembly 300 includes two copper foils located on both sides of the insulating layer 100, and the copper foils are laminated on the insulating layer 100. The insulating layer 100 is a film or is formed by curing a PTFE emulsion dissolved with resin. When the insulating layer 100 is a film, the copper foil is hot-pressed and laminated on the film; when the insulating layer 100 is formed by curing a PTFE emulsion dissolved with resin, the PTFE emulsion is poured between the two copper foils, and after the PTFE emulsion is cured, it is bonded to the copper foil.

[0036] In an embodiment of the present utility model, the bend-resistant cable further includes a fixing hole 500 penetrating through the copper foil and the insulating layer 100, and the shielding body 410 is in interference fit within the fixing hole 500. Specifically, after the copper foil is laminated on the insulating layer 100, a hole is drilled in the copper foil along the thickness direction of the insulating layer 100 to form the fixing hole 500 penetrating through the copper foil and the insulating layer 100, so as to dispose the shielding body 410 within the fixing hole 500.

[0037] Furthermore, the number of the fixing holes 500 is multiple; in the width direction of the insulating layer 100, the fixing holes 500 are symmetrically disposed on both sides of the inner conductor 200, and on each side, the fixing holes 500 are uniformly arranged along the length direction of the insulating layer 100, and the interval between two adjacent fixing holes 500 is 0.5 mm - 5 mm. If the interval between two adjacent fixing holes 500 is too small, the insulating layer 100 between the two fixing holes 500 is too thin and is likely to break during bending; if the interval between two adjacent fixing holes 500 is too large, the shielding bodies 410 within the two fixing holes 500 are far apart, affecting the shielding effect. Specifically, the interval between two adjacent fixing holes 500 is any value among 0.5 mm, 1.0 mm, 1.5 mm, 2.0 mm, 2.5 mm, 3.0 mm, 3.5 mm, 4.0 mm, 4.5 mm or 5.0 mm or a range value composed of any two of these values.

[0038] Even further, the thickness of the copper foil is 1.5 μm - 500 μm; if the thickness of the copper foil is too small, it is likely to break and it is difficult to laminate with the insulating layer 100. If the thickness of the copper foil is too large, the ductility of the copper foil will be reduced, which is not conducive to large-scale bending. Specifically, the thickness of the copper foil is any value among 1.5 μm, 5 μm, 10 μm, 20 μm, 50 μm, 100 μm, 150 μm, 200 μm, 250 μm, 300 μm, 350 μm, 400 μm, 450 μm or 500 μm or a range value composed of any two of these values. The diameter of the fixing hole 500 is 0.1 mm - 0.2 mm. If the diameter of the fixing hole 500 is too small, the shielding body 410 is too thin and the shielding effect is not good; if the diameter of the fixing hole 500 is too large, the shielding body 410 is too thick and is not conducive to large-scale bending. Specifically, the diameter of the fixing hole 500 is any value among 0.1 mm, 0.11 mm, 0.12 mm, 0.13 mm, 0.14 mm, 0.15 mm, 0.16 mm, 0.17 mm, 0.18 mm, 0.19 mm or 0.2 mm or a range value composed of any two of these values.

[0039] As Figure 3As shown, in an embodiment of the present utility model, the shielding body 410 is a columnar structural member made of a metal material, graphene, or conductive adhesive; preferably, the shielding body 410 is a columnar structural member made of copper, graphene, or conductive adhesive. After the fixing hole 500 is formed, a copper column / copper rivet can be inserted into the fixing hole 500; alternatively, graphene or conductive adhesive is injected and cured in the fixing hole 500 to achieve the effect of shielding external interference signals.

[0040] As Figure 4 shown, in an alternative embodiment of the present utility model, the shielding body 410 is a tubular structural member made of a metal material. After the fixing hole 500 is formed, a metal (preferably copper) is plated on the inner wall of the fixing hole 500 to form a metal tube to achieve the effect of shielding external interference signals. Further, graphene or conductive adhesive is injected and cured in the tubular structural member to form a graphene column or a conductive adhesive column to enhance the effect of shielding external interference signals.

[0041] In an embodiment of the present utility model, as Figure 1 shown, the inner conductor 200 includes a copper wire, and the copper wire extends along the length direction of the insulating layer 100; or, as Figure 2 shown, the inner conductor 200 includes a plurality of copper wires, each copper wire extends along the length direction of the insulating layer 100, and the plurality of copper wires are spaced apart along the width direction of the insulating layer 100; the diameter of the copper wire is not less than 0.015 mm.

[0042] In an embodiment of the present utility model, a sleeve 600 is sleeved on the copper wire, and the sleeve 600 is made of Teflon; the sleeve 600 is located between the copper wire and the insulating layer 100. With such a setting, during preparation, whether the film is compounded with the sleeve 600 or the PTFE emulsion is cured, the insulating layer 100 will be bonded to the sleeve 600, avoiding the bonding between the copper wire and the insulating layer 100, so that the copper wire can slide in the sleeve 600 during bending and is prevented from being pulled off.

[0043] The above-described embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit the same; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model, and should all be included within the protection scope of the present utility model.

Claims

1. A bend-resistant cable, characterized in that, Comprising: An insulating layer, which is a flexible flat structural member; An inner conductor, which is embedded in the insulating layer; A first shielding assembly, which is arranged on both sides in the thickness direction of the insulating layer for shielding external interference signals; A second shielding assembly, which is arranged on the insulating layer and is located on both sides of the inner conductor in the width direction of the insulating layer; the second shielding assembly includes a plurality of shielding bodies uniformly arranged along the length direction of the insulating layer.

2. The bend-resistant cable according to claim 1, wherein The first shielding assembly includes two copper foils located on both sides of the insulating layer, and the copper foils are laminated on the insulating layer.

3. The bend-resistant cable according to claim 2, wherein The bend-resistant cable further includes fixing holes penetrating through the copper foils and the insulating layer, and the shielding bodies are in interference fit in the fixing holes.

4. The bend-resistant cable according to claim 3, wherein The number of the fixing holes is multiple; in the width direction of the insulating layer, the fixing holes are symmetrically arranged on both sides of the inner conductor, and the fixing holes on each side are uniformly arranged along the length direction of the insulating layer, and the interval between two adjacent fixing holes is 0.5 mm - 5 mm.

5. The bend-resistant cable according to claim 3, wherein The thickness of the copper foil is 1.5 μm - 500 μm; And / or, the diameter of the fixing hole is 0.1 mm - 0.2 mm.

6. The bend-resistant cable according to claim 1, wherein The shielding body is a columnar structural member made of a metal material, graphene or conductive adhesive.

7. The bend-resistant cable according to claim 1, wherein The shielding body is a tubular structural member made of a metal material.

8. The bend-resistant cable according to claim 7, wherein A graphene column or a conductive adhesive column is arranged in the tubular structural member.

9. The bend-resistant cable according to claim 1, wherein The inner conductor includes a copper wire, and the copper wire extends along the length direction of the insulating layer; Or, the inner conductor includes a plurality of copper wires, each copper wire extends along the length direction of the insulating layer, and the plurality of copper wires are arranged at intervals in the width direction of the insulating layer; The diameter of the copper wire is not less than 0.015 mm.

10. The bend-resistant cable according to claim 9, wherein A sleeve is sleeved on the copper wire, and the sleeve is located between the copper wire and the insulating layer.

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