阅读说明：本技术 一种柔性d型通信电源专用电缆 (Flexible D-type communication power supply special cable ) 是由 田鸣 叶鹏飞 徐百顺 李少瑛 唐军 于 2021-06-24 设计创作，主要内容包括：本发明公开了一种柔性D型通信电源专用电缆,包括从内之外依次设置的缆芯、屏蔽层以及护套层,缆芯包括呈螺旋扭曲状的弹性板、两根紧压“D”形铜导体以及包覆在紧压“D”形铜导体外侧的绝缘层,两根所述紧压“D”形铜导体的直边分别紧贴弹性板的两侧边呈螺旋状延伸。本发明电缆受到压迫时,由于弹性板截面长度大于“D”形铜导体的直径,外力首先为施加至弹性板上,使得弹性板受力位置处的弹性板扭曲程度增加,一方面弹性板自身发生扭曲会减缓一部分压力,另一方面弹性板扭曲程度增加时,会使两根“D”形导体“绞合”程度增加,进而将压力作用与“D”形导体长度方向上,避免外界压力直接作用与D”形导体横截面上,导致“D”形导体断裂。(The invention discloses a flexible D-shaped special cable for a communication power supply, which comprises a cable core, a shielding layer and a sheath layer which are sequentially arranged from inside to outside, wherein the cable core comprises an elastic plate in a spiral twisted shape, two compressed D-shaped copper conductors and an insulating layer covering the outer sides of the compressed D-shaped copper conductors, and straight edges of the two compressed D-shaped copper conductors respectively cling to two side edges of the elastic plate to extend in a spiral shape. When the cable is stressed, because the section length of the elastic plate is greater than the diameter of the D-shaped copper conductor, external force is firstly applied to the elastic plate, so that the distortion degree of the elastic plate at the stress position of the elastic plate is increased, on one hand, the elastic plate per se generates distortion to slow down a part of pressure, on the other hand, when the distortion degree of the elastic plate is increased, the twisting degree of the two D-shaped conductors is increased, and further, the pressure is acted in the length direction of the D-shaped conductors, and the D-shaped conductors are prevented from being broken due to the direct action of the external pressure on the cross sections of the D-shaped conductors.)

1. The utility model provides a flexible D type communication power supply private cable, its characterized in that, includes cable core (1), shielding layer (2) and restrictive coating (3) that set gradually from inside to outside, wherein, cable core (1) is including elastic plate (11) that are the spiral distortion form, two sticiss "D" shape copper conductor (12) and cladding at the insulating layer (13) that sticiss "D" shape copper conductor (12) outside, wherein, two the straight flange that sticiss "D" shape copper conductor (12) hugs closely the both sides limit of elastic plate (11) respectively and is the heliciform extension, elastic plate (11) and two sticiss "D" shape copper conductor (12) outsides have composite band (14) around the package, elastic plate (11) both ends face between composite band (14) is provided with arch (15) respectively.

2. The flexible cable special for the D-type communication power supply according to claim 1, wherein: the D-shaped copper conductor (12) is formed by twisting a plurality of strands of thin and soft copper wires and compacting and molding the strands.

3. The flexible cable special for the D-type communication power supply according to claim 1, wherein: the composite belt (14) is an aluminum-plastic composite belt (14).

4. The flexible cable special for the D-type communication power supply according to claim 1, wherein: the shielding layer (2) is a copper wire braided combined shielding layer (2).

5. The flexible cable special for the D-type communication power supply according to claim 1, wherein: the section length of the elastic plate (11) is larger than the diameter of the D-shaped copper conductor (12).

Technical Field

The invention relates to the technical field of cables, in particular to a flexible D-type communication power supply special cable.

Background

The 4G communication technology is a fourth generation mobile information system, is a better improvement on the 3G technology, and has a greater advantage compared with the 3G communication technology, in that the WLAN technology and the 3G communication technology are well combined, so that the transmission speed of an image is faster, and the quality of the transmitted image and the image are more clear. The 4G communication technology is applied to the intelligent communication equipment, so that the Internet surfing speed of a user is quicker, and the speed can reach 100 Mbps. At present, the 4G network in China already covers 95% of administrative villages and 99% of population in China. However, with the rapid development of mobile communication technology, the 5G communication network will provide a main support for future internet of everything, so that scenes such as cloud service, internet of things, automatic driving, smart home, real-time VR/AR and the like can be realized, and it can be said that "4G changes life, and 5G changes society". The construction of 5G communication networks has become a goal of world-wide competition. However, since the 5G communication frequency is high, the signal propagation attenuation is large, the base station density of the 5G network is higher than that of the 4G base station, and the 5G communication energy consumption is large, so that the construction of the 5G base station is difficult. If the original 4G line can be borrowed, the investment cost is reduced. However, the traditional cable for the communication power supply mostly adopts a round conductor, the outer diameter of the cable is large, and considering that more communication power supply cables are needed for 5G, the diameter reduction becomes the direction of research and development of a novel adaptive cable. Therefore, a novel flexible D-type communication power supply special cable is produced.

Disclosure of Invention

The invention aims to provide a flexible D-type communication power supply special cable to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a flexible D type communication power supply private cable, includes cable core, shielding layer and the restrictive coating that sets gradually from inside to outside, wherein, the cable core is including the elastic plate that is the spiral distortion form, two sticiss "D" shape copper conductor and the cladding is at the insulating layer that sticiss "D" shape copper conductor outside, wherein, two the straight flange that sticiss "D" shape copper conductor is hugged closely the both sides limit of elastic plate respectively and is the heliciform extension, the elastic plate and two sticiss "D" shape copper conductor outside around having wound compound area, elastic plate both ends face between the compound area is provided with the arch respectively.

Preferably, the D-shaped copper conductor is formed by stranding a plurality of strands of thin and soft copper wires and compacting.

Preferably, the composite tape is an aluminum-plastic composite tape.

Preferably, the shielding layer is a copper wire braided combined shielding layer.

Preferably, the section length of the elastic plate is larger than the diameter of the D-shaped copper conductor.

Compared with the prior art, the invention has the beneficial effects that:

(1) the conductor is formed by twisting a plurality of strands of fine and soft aluminum alloy wires, and is made into a D-shaped conductor through compression molding, so that the outer diameter of the cable can be reduced by about 10 percent, the weight of the cable can be reduced by about 15 percent, and the cost can be reduced by about 6 percent.

(2) The aluminum-plastic composite belt and the copper wire braided combined shielding layer are arranged outside the cable core, so that the cable core has an excellent anti-electromagnetic interference effect.

(3) The elastic plate of the invention is spirally twisted, and the straight edges of two pressed D-shaped copper conductors respectively cling to the two side edges of the elastic plate to spirally extend, when the cable is pressed, because the section length of the elastic plate is greater than the diameter of the D-shaped copper conductor, an external force is firstly applied to the elastic plate, so that the twisting degree of the elastic plate at the stress position of the elastic plate is increased, on one hand, the self twisting of the elastic plate can slow down a part of pressure, on the other hand, when the twisting degree of the elastic plate is increased, the twisting degree of the two D-shaped conductors is increased, further, the pressure is acted on the length direction of the D-shaped conductors, the direct action of the external pressure on the section of the D-shaped conductors is avoided, the D-shaped conductors are broken, and when the twisting degree of the two D-shaped conductors is increased, a part of the force is acted on the elastic plate in the length direction, further relieving the external pressure and protecting the D-shaped conductor.

(4) The invention relates to an elastic plate and two composite belts wound and pressed on the outer sides of D-shaped copper conductors, wherein two end faces of the elastic plate between the composite belts are respectively provided with a bulge, when a cable is pulled by the outside, the composite belts are subjected to tension to displace, so that spiral edges of the composite belts push the bulges of the elastic plate, and the elastic plate tends to change in a straight state, when the elastic plate tends to change in a straight state, a part of tension can be relieved when the elastic plate per se changes, on the other hand, when the elastic plate tends to change in the straight state, the degree of twisting of the two D-shaped conductors is smaller, the two D-shaped conductors at the positions subjected to the tension become loose, the outside tension is prevented from being applied to the D-shaped conductors, and the D-shaped conductors are protected.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a cable core according to the present invention;

FIG. 3 is a schematic diagram of a D-shaped copper conductor and spring plate structure according to the present invention;

fig. 4 is a schematic structural view of the elastic plate sliding sleeve of the present invention.

In the figure: 1. a cable core; 11. an elastic plate; 12. a "D" shaped copper conductor; 13. an insulating layer; 14. a composite tape; 15. a protrusion; 2. a shielding layer; 3. a sheath layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, an embodiment of the present invention is shown: a flexible D-type special cable for communication power supply is characterized by comprising a cable core 1, a shielding layer 2 and a sheath layer 3 which are arranged in sequence from inside to outside, wherein, the cable core 1 comprises an elastic plate 11 in a spiral twist shape, two compacted D-shaped copper conductors 12 and an insulating layer 13 coated outside the compacted D-shaped copper conductors 12, wherein, the straight edges of the two pressed D-shaped copper conductors 12 respectively cling to the two sides of the elastic plate 11 and extend in a spiral shape, the outer sides of the elastic plate 11 and the two pressed D-shaped copper conductors 12 are wrapped with composite belts 14, two end faces of the elastic plate 11 between the composite belts 14 are respectively provided with a bulge 15, after the D-shaped copper conductors 12 are twisted by a plurality of strands of thin soft copper wires, and then the composite tape 14 is an aluminum-plastic composite tape 14, the shielding layer 2 is a copper wire braided combined shielding layer 2, and the section length of the elastic plate 11 is larger than the diameter of the D-shaped copper conductor 12.

The working principle is as follows: when the cable is applied, because the conductor is formed by twisting a plurality of strands of fine and soft aluminum alloy wires, the D-shaped conductor 12 is formed by pressing and forming, the outer diameter of the cable can be reduced by about 10%, the weight of the cable is reduced by about 15%, the cost is reduced by about 6%, and the aluminum-plastic composite belt 14+ copper wire braided combined shielding layer 2 is arranged outside the cable core 1, so that the cable has excellent anti-electromagnetic interference effect, when the cable is pressed, because the section length of the elastic plate 11 is greater than the diameter of the D-shaped copper conductor 12, an external force is firstly applied to the elastic plate 11, so that the twisting degree of the elastic plate 11 at the stress position of the elastic plate 11 is increased, on one hand, the self twisting of the elastic plate 11 can reduce a part of pressure, on the other hand, when the twisting degree of the elastic plate 11 is increased, the twisting degree of the two D-shaped conductors 12 is increased, so that the pressure effect is exerted in the length direction of the D-shaped conductor 12, the breakage of the D-shaped conductor 12 caused by the direct action of the external pressure on the cross section of the D-shaped conductor 12 is avoided, when the twisting degree of the two D-shaped conductors 12 is increased, partial force also acts on the elastic plate 11 in the length direction to further relieve the external pressure, the D-shaped conductor 12 is protected, when the cable is pulled by the outside, the composite belt 14 is pulled by the pulling force to displace the spiral edge of the composite belt 14 to push the bulge 15 of the elastic plate 11, so that the elastic plate 11 tends to change in a straight state, when the elastic plate 11 tends to change in the straight state, on one hand, when the elastic plate 11 tends to change in the straight state, the elastic plate can relieve a part of the pulling force, on the other hand, when the elastic plate 11 tends to change in the straight state, the twisting degree of the two D-shaped conductors 12 is smaller, and the two D-shaped conductors 12 at the positions where the pulling force is applied become loose, the application of external tension to the "D" shaped conductor 12 is avoided, protecting the "D" shaped conductor 12.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.