CN110246608B

CN110246608B - Shielded cable with polytetrafluoroethylene layer

Info

Publication number: CN110246608B
Application number: CN201910538122.9A
Authority: CN
Inventors: 闫兴鹏; 钱海英; 闫兴坤; 张香港
Original assignee: Hefei Guochen Wire Harness Technology Co ltd
Current assignee: Hefei Guochen Wire Harness Technology Co ltd
Priority date: 2019-06-20
Filing date: 2019-06-20
Publication date: 2021-01-05
Anticipated expiration: 2039-06-20
Also published as: CN110246608A

Abstract

The invention discloses a shielded cable with a polytetrafluoroethylene layer, and belongs to the field of shielded wires. It includes heart yearn, shielding layer and insulating buffer layer, the shielding layer parcel is outside the heart yearn, insulating buffer layer is filled between heart yearn and shielding layer, heart yearn one side is opened along the axial has the bar recess, bar recess bottom is the arc and coincide with the lateral wall that the heart yearn deviates from bar recess one side, bar recess bottom is opened has a plurality of horizontal spacing recesses of establishing, it has a plurality of spacing protruding stupefied that correspond with a plurality of spacing recesses to open on the lateral wall that the heart yearn deviates from bar recess one side. This technical scheme is when two cables are connected, and the heart yearn is peeled off and the shielding layer is turned up to the joint of a cable, inserts in the bar recess of another cable joint, again with the shielding layer parcel of turning up to the shielding layer of another cable on, can prevent that the junction heart yearn of two cables from exposing and causing the problem of being connected with the shielding layer.

Description

Shielded cable with polytetrafluoroethylene layer

Technical Field

The invention belongs to the field of shielded wires, and particularly relates to a shielded cable with a polytetrafluoroethylene layer.

Background

The shielded wire is a transmission line in which a metal mesh braid is used to wrap core wires, the braid is usually made of red copper or tin-plated copper, and when two shielded wires are connected, the shielding layers of the two shielded wires are usually stripped, the core wires in the two shielded wires are electrically connected, and then the shielding layers of the two shielded wires are respectively grounded.

In the process of implementing the invention, the inventor finds that the above mode has at least the following defects: the core of two lines need to be peeled off and exposed during connection, and the exposed part can not be effectively insulated with the shielding layer after connection, and the shielding layer of two lines is not favorable for being connected, and the problem of shielding blind area is formed at the junction.

Disclosure of Invention

The invention aims to provide a shielding cable with a polytetrafluoroethylene layer, which solves the defects in the prior art. In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:

the utility model provides a take shielded cable on polytetrafluoroethylene layer, includes heart yearn, shielding layer and insulating buffer layer, the shielding layer parcel is outside the heart yearn, insulating buffer layer fills between heart yearn and shielding layer, heart yearn one side is opened along the axial has the bar recess, bar recess bottom is the arc and coincide with the lateral wall that the heart yearn deviates from bar recess one side, bar recess bottom is opened has a plurality of horizontal spacing recesses of establishing, it has a plurality of spacing protruding stupehs that correspond with a plurality of spacing recesses to open on the lateral wall that the heart yearn deviates from bar recess one side.

Further limit, a filling body is arranged in the strip-shaped groove.

Further limit, a plurality of isolation grooves are formed in the filling body.

Further defined, the insulating buffer layer is made of polytetrafluoroethylene.

Further limit, still include the pyrocondensation pipe, the pyrocondensation pipe parcel is outside the shielding layer.

Further limited, the heat shrinkable tube is a single-wall heat shrinkable tube.

Further defined, the number of the core wires is at least one.

Compared with the prior art, when two cables are connected, the core wires are stripped from the joint of one cable, the shielding layer is turned up and inserted into the strip-shaped groove of the joint of the other cable, and the turned-up shielding layer is wrapped on the shielding layer of the other cable, so that the problem that the core wires at the joint of the two cables are exposed to cause connection with the shielding layer can be solved.

Drawings

The invention is further illustrated by the non-limiting examples given in the accompanying drawings;

FIG. 1 is a schematic structural diagram of a shielded cable with a polytetrafluoroethylene layer according to the present invention;

FIG. 2 is a schematic structural diagram of a stripe-shaped groove according to the present invention;

the main element symbols are as follows:

the heat-shrinkable tube comprises a core wire 1, a shielding layer 2, an insulating buffer layer 3, a limiting groove 31, a limiting convex ridge 32, a filling body 4, a partition groove 41 and a heat-shrinkable tube 5.

Detailed Description

In order that those skilled in the art can better understand the present invention, the following technical solutions are further described with reference to the accompanying drawings and examples.

As shown in fig. 1 and 2, a take shielded cable on polytetrafluoroethylene layer, including heart yearn 1, shielding layer 2 and insulating buffer layer 3, shielding layer 2 wraps up outside heart yearn 1, insulating buffer layer 3 is filled between heart yearn 1 and

shielding layer

2, 1 one side of heart yearn is opened along the axial has the bar recess, bar recess bottom is the arc and coincide with the lateral wall that heart yearn 1 deviates from bar recess one side, bar recess bottom is opened has a plurality of horizontal spacing recesses 31 of establishing, it has a plurality of spacing protruding stupefied 32 that correspond with a plurality of spacing recesses 31 to open on the lateral wall that heart yearn 1 deviates from bar recess one side.

In the embodiment, when two cables are connected, the core wire 1 is stripped from the joint of one cable, the shielding layer 2 is turned up and inserted into the strip-shaped groove of the joint of the other cable, and the turned-up shielding layer 2 is wrapped on the shielding layer 2 of the other cable, so that the problem that the core wire 1 at the joint of the two cables is exposed to cause connection with the shielding layer 2 can be prevented; meanwhile, the limiting groove 31 and the limiting convex edge 32 are clamped and fixed with each other and are fixed by being matched with the extrusion of the insulating buffer layer 3, so that the joint has certain structural strength. And a filling body 4 is arranged in the strip-shaped groove. The filling body 4 is provided with a plurality of partition grooves 41, the partition grooves 41 divide the filling body 4 into a plurality of sections, and the filling body 4 with different quantity can be drawn out as required. The insulating buffer layer 3 is made of polytetrafluoroethylene. Still include pyrocondensation pipe 5, pyrocondensation pipe 5 wraps up in shielding layer 2 outsidely, and pyrocondensation pipe 5 can be turned over in advance when connecting, covers outside the junction after connecting, and rethread heating is fixed, improves the seal of junction. The heat shrinkable tube 5 is a single-wall heat shrinkable tube 5. The number of the core wires 1 is at least one.

The shielded cable with the polytetrafluoroethylene layer provided by the invention is described in detail above. The description of the specific embodiments is only intended to facilitate an understanding of the method of the invention and its core ideas. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. The utility model provides a take shielded cable on polytetrafluoroethylene layer, includes heart yearn, shielding layer and insulating buffer layer, the shielding layer parcel is outside the heart yearn, insulating buffer layer is filled between heart yearn and shielding layer, its characterized in that: it has the bar recess to open along the axial on heart yearn one side, bar recess bottom is the arc and coincide with the lateral wall that heart yearn deviates from bar recess one side, bar recess bottom is opened has a plurality of horizontal spacing recesses of establishing, it has a plurality of spacing protruding stupexes that correspond with a plurality of spacing recesses to open on the lateral wall that heart yearn deviates from bar recess one side.

2. The shielded cable with polytetrafluoroethylene layer according to claim 1, wherein: and a filling body is arranged in the strip-shaped groove.

3. The shielded cable with polytetrafluoroethylene layer according to claim 2, wherein: the filling body is provided with a plurality of isolating grooves.

4. The shielded cable with polytetrafluoroethylene layer according to claim 3, wherein: the insulating buffer layer is made of polytetrafluoroethylene.

5. The shielded cable with polytetrafluoroethylene layer according to claim 4, wherein: the heat-shrinkable tube is wrapped outside the shielding layer.

6. The shielded cable with polytetrafluoroethylene layer according to claim 5, wherein: the heat shrinkable tube is a single-wall heat shrinkable tube.

7. The shielded cable with polytetrafluoroethylene layer according to claim 6, wherein: the number of the core wires is at least one.