CN220357858U

CN220357858U - Video transmission line

Info

Publication number: CN220357858U
Application number: CN202322033986.XU
Authority: CN
Inventors: 赵枫琪
Original assignee: Baiheng Technology Shenzhen Co ltd
Current assignee: Baiheng Technology Shenzhen Co ltd
Priority date: 2023-07-31
Filing date: 2023-07-31
Publication date: 2024-01-16
Anticipated expiration: 2033-07-31

Abstract

The utility model relates to the technical field of transmission cables, in particular to a video transmission line which comprises a plurality of groups of transmission units, at least one group of twisted pair units and at least two groups of electronic line units, wherein the transmission units, the twisted pair units and the electronic line units are wrapped by a shielding layer, and the shielding layer is wrapped by a sheath layer; each transmission unit comprises two first core wires and a first ground wire, each first core wire comprises a conductor and a first insulating layer wrapping the conductor, the two first core wires are wrapped by a second insulating layer, and a gap between the second insulating layer and the first core wires is filled by a filling layer. It can be seen that the video transmission line of this application can prevent to lead to the fact one first heart yearn to be strained another first heart yearn to relax easily because the unwrapping wire tension of two first heart yearns is inconsistent in the subsequent process, finally leads to the fact the length of two first heart yearns inconsistent.

Description

Video transmission line

Technical Field

The utility model relates to the technical field of transmission cables, in particular to a video transmission line.

Background

A video transmission line is a data line for transmitting video signals. At present, a video transmission line generally comprises a main sheath, a transmission unit for transmitting video signals is arranged in the main sheath, the transmission unit comprises two first core wires, and the two first core wires are wrapped together through an insulating layer. However, only two first core wires which are wrapped together through the insulating layer are mutually separated, one first core wire is tensioned easily due to inconsistent paying-off tension of the two first core wires in the subsequent production process, the other first core wire is loosened, and finally, inconsistent lengths of the two first core wires are caused, so that stability of signal transmission is affected.

Disclosure of Invention

In order to overcome the above-mentioned drawbacks of the prior art, the present utility model provides a video transmission line to solve the above-mentioned problems of the prior art.

The utility model solves the problems in the prior art by adopting the technical scheme that: a video transmission line comprising a plurality of groups of transmission units, at least one group of twisted pair units and at least two groups of electronic line units, wherein the transmission units, the twisted pair units and the electronic line units are wrapped together by a shielding layer, and the shielding layer is wrapped by a sheath layer; and

each transmission unit comprises two first core wires and a first ground wire, wherein each first core wire comprises a conductor and a first insulating layer wrapping the conductor, the two first core wires are wrapped by a second insulating layer, a gap between the second insulating layer and the first core wires is filled by a filling layer, and the first ground wire is arranged between the filling layer and the second insulating layer.

It can be seen that after two first core wires in the transmission unit adopted by the video transmission line are wrapped by the first insulating layer, gaps between the first core wires and the first insulating layer are filled by the filling layer, the filling layer can fasten the first core wires wrapped by the first insulating layer and the second core wires, and the problem that one first core wire is loosened by tensioning the other first core wire due to inconsistent paying-off tension of the two first core wires in a subsequent process is avoided, and finally the inconsistent lengths of the two first core wires are caused.

As a preferable mode of the present utility model, a gap is left between the two first core wires in each of the transmission units, and the gap is filled with the filling layer.

As a preferable mode of the present utility model, the second insulating layer includes an insulating portion and a first signal shielding portion, both the first core wires are wrapped together by the first signal shielding portion, and a gap between the first signal shielding portion and the first core wire is filled by the filling layer;

the first ground wire is arranged between the first signal shielding part and the filling layer; and

the insulating part wraps the first signal shielding part.

As a preferred aspect of the present utility model, the first signal shielding part includes a conductive surface, and the conductive surface is in contact with the first ground line.

As a preferred embodiment of the present utility model, the filling layer is made of polyethylene material.

As a preferable mode of the present utility model, the twisted pair unit includes two second core wires and a second ground wire, both of which are wrapped together by a third insulation layer; and

the third insulating layer structure is identical to the second insulating layer structure.

As a preferable mode of the present utility model, the shielding layer includes a second signal shielding part and a third signal shielding part, the second signal shielding part wraps the transmission unit, the twisted pair unit and the electronic wire unit, the third signal shielding part wraps the second signal shielding part, and the sheath layer wraps the third signal shielding part.

As a preferred embodiment of the present utility model, the electronic device further comprises a filling unit, and the filling unit, the transmission unit, the twisted pair unit, and the electronic wire unit are together surrounded by the shielding layer.

As a preferable mode of the present utility model, the signal processing device further includes a total ground line provided between the second signal shielding portion and the third signal shielding portion.

As a preferred embodiment of the present utility model, the number of the transmission units is 4 or 6.

Drawings

Fig. 1 is a cross-sectional view of a video transmission line of the present utility model;

fig. 2 is a cross-sectional view of a transmission unit in a video transmission line according to the present utility model;

fig. 3 is a cross-sectional view of a twisted pair unit in a video transmission line according to the present utility model.

Reference numerals in the drawings:

100. a transmission unit; 110. a first core wire; 111. a conductor; 112. a first insulating layer; 120. a first ground line; 130. a second insulating layer; 131. an insulating part; 132. a first signal shielding part; 140. a filling layer;

200. twisted pair units; 210. a second core wire; 220. a second ground line; 230. a third insulating layer;

300. an electron beam unit;

400. a shielding layer; 410. a second signal shielding part; 420. a third signal shielding section;

500. a sheath layer; 600. a filling unit; 700. and (3) a total ground wire.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved by the present application more clear, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present application and simplify description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

The video transmission line can be used in wires and cables for transmitting video signals, such as consumer audio and video, VR series products and HDMI, displayport.

As shown in fig. 1: a video transmission line includes a plurality of sets of transmission units 100, at least one set of twisted pair units 200, and at least two sets of electronics units 300.

The multiple sets of transmission units 100 are used for transmitting audio and video differential signals, and one part of the transmission units 100 in the multiple sets of transmission units 100 can be used for transmitting video image signals, and the other part of the transmission units 100 can be used for transmitting clock signals or control signals.

For example, the transmission unit 100 may be provided with 4 sets or 6 sets. For example, when the transmission units 100 are arranged in four groups, three groups of the transmission units 100 may be used to transmit video signals, and another group of the transmission units 100 may be used to transmit clock signals or control signals.

Twisted pair unit 200 may be used to transmit a small number of audio backhaul or network functions.

The electronic line unit 300 plays a role of controlling DDC/CEC or the like in video transmission. The number of the electron beam units 300 may be set to 2 to 5 groups as needed.

Further, the transmission unit 100, the twisted pair unit 200, and the electron beam unit 300 are together wrapped by the shielding layer 400, and the shielding layer 400 is wrapped by the sheathing layer 500 to form a cable. Wherein, the shielding layer 400 can play a role of shielding and anti-interference, and the sheath layer 500 is used as an outermost protective layer of the cable.

Referring to fig. 2, the transmission unit 100 may include two first core wires 110 and a first ground wire 120, wherein each first core wire 110 includes a conductor 111 and a first insulating layer 112 surrounding the conductor 111, the two first core wires 110 are covered by a second insulating layer 130, a gap between the first core wires 110 of the second insulating layer 130 is filled by a filling layer 140, and the first ground wire 120 is disposed between the filling layer 140 and the second insulating layer 130.

The conductor 111 may be made of high-conductivity bare copper, tin-plated copper, silver-plated copper, or pure silver wire. The first insulating layer 112 may be made of a polyolefin material with a low dielectric constant, such as high density polyethylene, foamed polyethylene, low density polyethylene, polypropylene, etc.

The two first cores 110 are used to transmit positive and negative signals, respectively, of the differential signal.

The filler layer 140 may be made of polyethylene material. Specifically, two first core wires 110 may be placed on a mold to fill a polyethylene material to form a filling layer 140 around the two first core wires 110.

In some embodiments, the two first core wires 110 may be abutted against each other. In other embodiments, a gap is left between the two first core wires 110, and the gap is filled with the filling layer 140, which can adjust the characteristic impedance of the transmission line.

It can be seen that, after the two first core wires 110 in the transmission unit 100 used in the video transmission line of the present application are wrapped by the first insulating layer 112, the gap between the first core wires 110 and the first insulating layer 112 is filled by the filling layer 140, and the filling layer 140 can fasten the first core wires 110 and the second core wires 210 wrapped by the first insulating layer 112, so that the problem that in the subsequent process, due to inconsistent paying-off tension of the two first core wires 110, one first core wire 110 is easily loosened by tightening the other first core wire 110, and finally, the lengths of the two first core wires 110 are inconsistent is avoided.

Further, referring to fig. 2, the second insulating layer 130 may include an insulating portion 131 and a first signal shielding portion 132, the two first core wires 110 are wrapped together by the first signal shielding portion 132, and a gap between the first signal shielding portion 132 and the first core wire 110 is filled with the filling layer 140. The first ground wire 120 is disposed between the first signal shielding portion 132 and the filler layer 140, and the insulating portion 131 wraps the first signal shielding portion 132. The insulating part 131 may be made of a mylar material, and has functions of insulation, protection and fixation. The first signal shielding part 132 may use an aluminum foil tape or a copper foil tape to function as a shield.

In some embodiments, the first signal shield 132 includes a conductive surface that is in contact with the first ground wire 120.

Referring to fig. 3, the twisted pair unit 200 includes two second core wires 210 and a second ground wire 220, and the two second core wires 210 and the second ground wire 220 are together wrapped by a third insulation layer 230. Wherein, the third insulation layer 230 may have the same structure as the second insulation layer 130, and the second core wire 210 may have the same structure as the first core wire 110. Since the bandwidth of the signal transmitted by the twisted pair unit 200 is required to be low, the filling layer 140 between the second core 210 and the third insulating layer 230 is not required, so that the cost can be reduced.

Referring to fig. 1, the shielding layer 400 may include a second signal shielding part 410 and a third signal shielding part 420, the second signal shielding part 410 wrapping the transmission unit 100, the twisted pair unit 200, and the electron beam unit 300, the third signal shielding part 420 wrapping the second signal shielding part 410, and the sheathing layer 500 wrapping the third signal shielding part 420.

The second signal shielding portion 410 may be made of a shielding material such as aluminum foil, conductive tape, graphene conductive tape, copper foil, and the like, and plays roles of shielding signals and resisting interference.

The third signal shielding part 420 may be formed with a metal wire in a braiding or winding manner to form the metal shielding layer 400, thereby playing an anti-interference role. In some embodiments, the third signal shield 420 may also function as the overall ground 700 in the transmission line.

The sheath layer 500 may be made of an insulating sheath material such as PVC or TPE.

Referring to fig. 1, in some embodiments, the video transmission line may further include a filling unit 600, and the filling unit 600, the transmission unit 100, the twisted pair unit 200, and the electron beam unit 300 are together enclosed by the shielding layer 400. The filling unit 600 can make the above units more round when twisted together in a video transmission line, and can play a role in stretching resistance of the transmission line. The filling unit 600 may be made of cotton, nylon, hemp, or the like.

In some embodiments, the video transmission line may further include a total ground 700, the total ground 700 being disposed between the second signal shield 410 and the third signal shield 420, the total ground 700 being for grounding.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The video transmission line is characterized by comprising a plurality of groups of transmission units, at least one group of twisted pair units and at least two groups of electronic wire units, wherein the transmission units, the twisted pair units and the electronic wire units are wrapped by a shielding layer, and the shielding layer is wrapped by a sheath layer; and

2. A video transmission line according to claim 1, wherein a gap is left between the two first core wires in each of the transmission units, the gap being filled with the filling layer.

3. The video transmission line according to claim 1, wherein the second insulating layer includes an insulating portion and a first signal shielding portion, both the first core wires are wrapped together by the first signal shielding portion, and a gap between the first signal shielding portion and the first core wire is filled by the filling layer;

the insulating part wraps the first signal shielding part.

4. A video transmission line as claimed in claim 3 wherein the first signal shield portion includes a conductive surface, the conductive surface being in contact with the first ground line.

5. A video transmission line according to any one of claims 1 to 3, wherein the filler layer is of polyethylene material.

6. A video transmission line according to claim 3, wherein the twisted pair unit comprises two second core wires and a second ground wire, both of the second core wires and the second ground wire being together surrounded by a third insulating layer; and

7. The video transmission line of claim 1, wherein the shielding layer includes a second signal shielding portion and a third signal shielding portion, the second signal shielding portion wrapping the transmission unit, the twisted pair unit, and the electronic wire unit, the third signal shielding portion wrapping the second signal shielding portion, and the jacket layer wrapping the third signal shielding portion.

8. The video transmission line of claim 1, further comprising a filler unit, wherein the filler unit, the transmission unit, the twisted pair unit, and the electron line unit are encased together by the shielding layer.

9. The video transmission line of claim 7, further comprising a total ground disposed between the second signal shield and the third signal shield.

10. A video transmission line according to claim 1, wherein the number of transmission units is 4 or 6.