Thin bending-resistant film VR wire rod

Abstract

The utility model relates to the technical field of cables, in particular to a thin bending-resistant film VR wire rod, which is characterized in that a plurality of first signal line groups, second signal line groups and power line groups which are arranged in parallel are designed, the peripheries of the first signal line groups, the second signal line groups and the power line groups are respectively coated with self-adhesive polyester tapes, and the adhesive surfaces of the self-adhesive polyester tapes face outwards, so that the bonding strength of the self-adhesive polyester tapes is improved; and the outermost layers of the first signal line group, the second signal line group and the power line group are coated and fixed by a hot melting polyester belt. The whole thickness of the wire is thinner due to the wire groups arranged in parallel, the wire is suitable for the requirements of places with size limitation on the wire such as internal connection of equipment, each wire group is independently coated with a self-adhesive polyester tape, then the outermost layer is coated with a hot-melt polyester tape, and after heating and shaping, the positions of the wire groups are fixed by the hot-melt polyester tape, so that the wire is more uniform in size. Through the self-adhesive polyester tape, the wires can be better bonded together during film pasting, so that the wires form a stable whole, the wire structure is more stable and is not easy to loosen, and the bending resistance is improved.

Description

Technical Field

[0001] This application relates to the technical field of cables, and particularly to a thin and bend-resistant film-coated VR cable. Background Art

[0002] A film-coated cable generally sandwiches multiple groups of core wires arranged at a certain spacing between two films, and then bonds the three into a row of cables, which is mostly used for internal connection wires in data center servers and portable mobile electrical equipment. With the rise of technologies such as virtual reality (VR), the advantages of film-coated cables, such as no kinking and neat folding, are increasingly applied in such devices. For a film-coated cable used in a head-mounted VR device, it is required to be light, and there are strict requirements for the size, bend resistance, and high-frequency performance of the cable. Due to its structural characteristics, it is difficult to bond the cable when the size is reduced, and it is prone to looseness after bending, resulting in unstable high-frequency performance and seriously affecting signal transmission. Summary of the Utility Model

[0003] To solve the above technical problems, this application provides a thin and bend-resistant film-coated VR cable, which includes a plurality of groups of first signal wire groups, second signal wire groups, and power wire groups arranged in parallel. Self-adhesive polyester tapes are respectively wrapped around the outer peripheries of the first signal wire groups, second signal wire groups, and power wire groups, and the adhesive surfaces of the self-adhesive polyester tapes face outward. The outermost layer of the first signal wire groups, second signal wire groups, and power wire groups is wrapped and fixed by a hot-melt polyester tape.

[0004] Preferably, the overall thickness of the cable is less than 0.4 mm, the overall width is less than 6.5 mm, and the spacing between any two adjacent wire groups is 0.2 mm - 0.3 mm.

[0005] Preferably, the first signal wire group includes at least two first core wires. The first core wire includes a first conductor, a first insulating layer covering the first conductor, copper wires wound around the outer periphery of the first insulating layer, and a shielding layer covering the outer periphery of the copper wires. The self-adhesive polyester tape is wrapped around the outer periphery of the shielding layer.

[0006] Preferably, the first conductor includes a plurality of silver-plated tin-copper alloy conductors stranded together.

[0007] Preferably, the insulating layer is made of PFA material.

[0008] Preferably, the copper wires are tin-copper alloy with a diameter of 0.03 - 0.04 mm.

[0009] Preferably, the second signal wire group includes a plurality of second core wires arranged side by side. The second core wire includes a second conductor and a second insulating layer covering the second conductor. The self-adhesive polyester tape is wrapped around the outer periphery of the second insulating layer.

[0010] Preferably, the power cord group includes a third conductor and a third insulating layer covering the third conductor, and the third conductor has a flat structure.

[0011] As can be seen from the above, the following beneficial effects can be obtained by applying the present application: by designing a plurality of groups of first signal line groups, second signal line groups and power cord groups arranged in parallel, self-adhesive polyester tapes are respectively covered on the outer peripheries of the first signal line groups, second signal line groups and power cord groups, and the adhesive surfaces of the self-adhesive polyester tapes face outward, and the outermost layer of the first signal line groups, second signal line groups and power cord groups is covered and fixed by a hot-melt polyester tape. The parallel arrangement of the line groups makes the overall thickness of the wire thinner, which meets the requirements of places with size limitations on wires such as internal connections of equipment. Each line group is individually covered with a self-adhesive polyester tape, and then the outermost layer is covered with a hot-melt polyester tape. After heat setting, the hot-melt polyester tape fixes the positions of each line group. When applying the film through the self-adhesive polyester tape, it can be better bonded together, making the wire form a stable whole, making the wire structure more stable and not easy to loosen, and improving the bending resistance performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments of the present application or the prior art. Obviously, the drawings in the following description are only a part of the embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0013] Figure 1 It is a schematic structural diagram of a thin and bend-resistant film VR wire in an embodiment of the present application;

[0014] Figure 2 It is a schematic structural diagram of a first signal line group in an embodiment of the present application;

[0015] Figure 3 It is a schematic structural diagram of a second signal line group in an embodiment of the present application;

[0016] Figure 4 It is a schematic structural diagram of a power cord group in an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0018] Embodiment

[0019] To solve the above technical problems, this embodiment provides a thin and bend-resistant film-coated VR wire, as Figure 1 shown, which includes several groups of first signal wire groups 10, second signal wire groups 20, and power wire groups 30 arranged in parallel. Self-adhesive polyester tapes 40 are respectively coated on the outer peripheries of the first signal wire groups 10, second signal wire groups 20, and power wire groups 30, and the adhesive surfaces of the self-adhesive polyester tapes 40 face outward. The outermost layer of the first signal wire groups 10, second signal wire groups 20, and power wire groups 30 is coated and fixed by a heat-melt polyester tape 50. The parallel arrangement of the wire groups makes the overall thickness of the wire thinner, meeting the requirements of places with size limitations on wires such as internal connections of devices. Each wire group is individually coated with a self-adhesive polyester tape 40, and then the outermost layer is coated with a heat-melt polyester tape 50. After heat setting, the heat-melt polyester tape 50 fixes the positions of the wire groups. The self-adhesive polyester tape 40 enables better bonding during film coating, making the wire form a stable whole, making the wire structure more stable and not easily loose, and improving the bend resistance performance.

[0020] Specifically, the overall thickness of the wire is less than 0.4 mm, the overall width is less than 6.5 mm, and the distance between any two adjacent wire groups is 0.2 mm - 0.3 mm. The distance of 0.2 mm to 0.3 mm between two adjacent wire groups ensures tight adhesion, and the overall thickness of the wire is less than 0.4 mm and the overall width is less than 6.5 mm, perfectly meeting the requirements of small-sized head-mounted VR devices and achieving the overall performance requirements of ultra-thin and bend-resistant.

[0021] In the above solution, as Figure 2 shown, the first signal wire group 10 includes at least two first core wires 11. The first core wire 11 includes a first conductor 111, a first insulating layer 112 coating the first conductor 111, a copper wire 113 wound around the outer periphery of the first insulating layer 112, and a shielding layer 114 coating the outer periphery of the copper wire 113. The self-adhesive polyester tape 40 is coated on the outer periphery of the shielding layer 114. Among them, the first conductor 111 includes several stranded silver-plated tin-copper alloy conductors. Exemplarily, the first conductor 111 is formed by twisting 7 silver-plated tin-copper alloy conductors with a diameter of 0.03 mm. The silver-plated tin-copper alloy conductor has a stronger tensile strength, a 30% higher elongation rate compared to ordinary conductors, and better bend resistance performance. Due to the skin effect, silver plating on the surface of the conductor can make the attenuation performance of the wire better and the high-frequency performance more stable.

[0022] Furthermore, the first insulating layer 112 is made of PFA material. PFA has better fluidity and a smaller dielectric constant. On the premise of ensuring performance, the core wire diameter can be made smaller by reducing the thickness of the insulating layer 112.

[0023] In the above solution, 25 copper wires 113 are wound around the outer periphery of the first insulating layer 112. The copper wires 113 are tin-copper alloys with a diameter of 0.03 - 0.04 mm. By winding 25 tin-copper alloys with a diameter of 0.03 mm around the outer periphery of the first insulating layer 112 as the first layer of shielding, and then covering it with a shielding layer 114 as the second layer of shielding, the composed double shielding layer can obtain better attenuation performance.

[0024] Further, as Figure 3 shown, the second signal wire group 20 includes a plurality of second core wires 21 arranged side by side. The second core wires 21 include a second conductor 211 and a second insulating layer 212 covering the second conductor 211. The self-adhesive polyester tape 40 is covered on the outer periphery of the second insulating layer 212.

[0025] Further, as Figure 4 shown, the power wire group 30 includes a third conductor 31 and a third insulating layer 32 covering the third conductor 31. The third conductor 31 has a flat structure. Since the specification of the third conductor 31 in the power wire group 30 is relatively large, in order to meet the wire thickness requirement, the third conductor 31 is made into a flat structure, so that the overall thickness of the power wire group 30 is consistent with that of other wire groups, thus meeting the ultra-thin requirement.

[0026] In summary, the solution of this application designs several groups of first signal wire groups, second signal wire groups and power wire groups arranged in parallel. Self-adhesive polyester tapes are respectively covered on the outer peripheries of the first signal wire group, the second signal wire group and the power wire group, and the adhesive surfaces of the self-adhesive polyester tapes face outward. The outermost layer of the first signal wire group, the second signal wire group and the power wire group is covered and fixed by a hot-melt polyester tape. The parallel arrangement of the wire groups makes the overall thickness of the wire thinner, which meets the requirements of places with size limitations on wires such as internal connections of equipment. Each wire group is individually covered with a self-adhesive polyester tape, and then the outermost layer is covered with a hot-melt polyester tape. After heat setting, the hot-melt polyester tape fixes the positions of each wire group. When using the self-adhesive polyester tape, it can be better bonded together, making the wire form a stable whole, making the wire structure more stable and not easy to loosen, and improving the bending resistance performance.

[0027] The above-described embodiments do not constitute a limitation on the protection scope of this technical solution. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the above embodiments shall be included in the protection scope of this technical solution.

Claims

1. A thin, bend-resistant film VR wire, characterized in that: The invention comprises a plurality of first signal line groups (10), second signal line groups (20) and power line groups (30) arranged in parallel, wherein the outer peripheries of the first signal line group (10), the second signal line group (20) and the power line group (30) are respectively coated with self-adhesive polyester tapes (40), and the adhesive surface of the self-adhesive polyester tapes (40) faces outwards, and the outermost layers of the first signal line group (10), the second signal line group (20) and the power line group (30) are coated and fixed by hot-melt polyester tapes (50).

2. The thin bending-resistant film VR wire according to claim 1, characterized in that: The overall thickness of the wire is less than 0.4 mm, the overall width is less than 6.5 mm, and the spacing between any two adjacent wire groups is 0.2 mm-0.3 mm.

3. The thin bending-resistant film VR wire according to claim 1, characterized in that: The first signal line group (10) includes at least two first core wires (11), the first core wire (11) includes a first conductor (111), a first insulating layer (112) covering the first conductor (111), a copper wire (113) wound around the first insulating layer (112), and a shielding layer (114) covered around the copper wire (113), and the self-adhesive polyester tape (40) is covered around the shielding layer (114).

4. The thin bending-resistant film VR wire according to claim 3, characterized in that: The first conductor (111) comprises a plurality of twisted silver-tin-copper alloy conductors.

5. The thin bending-resistant film VR wire according to claim 3, characterized in that: The first insulating layer (112) is made of PFA material.

6. The thin bending-resistant film VR wire according to claim 3, characterized in that: The copper wire (113) is a tin-copper alloy and has a diameter of 0.03-0.04 mm.

7. The thin bending-resistant film VR wire according to claim 1, characterized in that: The second signal line group (20) comprises a plurality of second core lines (21) arranged side by side, the second core line (21) comprises a second conductor (211) and a second insulating layer (212) covering the second conductor (211), and the self-adhesive polyester tape (40) is covered on the outer periphery of the second insulating layer (212).

8. The thin bending-resistant film VR wire according to claim 1, characterized in that: The power line set (30) comprises a third conductor (31) and a third insulating layer (32) covering the third conductor (31); the third conductor (31) is in a flat structure.

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