CN216817875U

CN216817875U - BV type copper core polyvinyl chloride insulated wire safety protection structure

Info

Publication number: CN216817875U
Application number: CN202122658288.XU
Authority: CN
Inventors: 陈恩德; 陈文杰; 陈以勒; 陈勇
Original assignee: Guichang Cable Group Co ltd
Current assignee: Guichang Cable Group Co ltd
Priority date: 2021-11-02
Filing date: 2021-11-02
Publication date: 2022-06-24
Anticipated expiration: 2031-11-02

Abstract

The utility model discloses a BV-type copper core polyvinyl chloride insulated wire safety protection structure which comprises a BV wire copper core, wherein a wire wrapping layer is arranged outside the BV wire copper core, a fire-resistant layer is arranged outside the wire wrapping layer, an outer sheath is arranged outside the fire-resistant layer, a gap is reserved between the fire-resistant layer and the outer sheath, a plurality of clamping blocks are uniformly fixed on the outer surface of the fire-resistant layer, a plurality of clamping grooves matched with the clamping block structures are uniformly fixed on the inner wall of the outer sheath, the clamping blocks correspond to the clamping grooves one by one in position, the outer ends of the clamping blocks are inserted into the clamping grooves and are in sliding connection with the clamping grooves, spring parts are arranged inside the clamping grooves, and two ends of each spring part are respectively connected with the bottom wall of the clamping groove and one end of each clamping block, which is positioned inside the clamping groove. This BV type copper core polyvinyl chloride insulated wire safety protection structure can effectually protect the copper core, improves the compressive property of electric wire, increase of service life.

Description

BV type copper core polyvinyl chloride insulated wire safety protection structure

Technical Field

The utility model relates to the technical field of BV wire safety protection devices, in particular to a BV type copper core polyvinyl chloride insulated wire safety protection structure.

Background

The BV wire is called a plastic copper wire for short and is called a copper core polyvinyl chloride insulating cloth wire completely. B represents the category of the wiring, and V represents the insulation of polyvinyl chloride. The single-core hard conductor non-sheath electric wire is suitable for cable electric wires with alternating voltage of 450/750V and below for power devices, daily electric appliances, instruments and telecommunication equipment. Has the characteristics of acid and alkali resistance, oil resistance, moisture resistance, mildew resistance and the like.

The existing BV type copper core polyvinyl chloride insulated wire is simple in structure, most of the existing BV type copper core polyvinyl chloride insulated wires are only provided with one layer of covered wire sheath, the wires are extremely easy to be affected by external factors in the using process and are damaged, the service life of the wires is shortened, most of the existing BV type copper core polyvinyl chloride insulated wires are distributed densely, and certain fire hazard exists when the electrical load is large.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a BV type copper core polyvinyl chloride insulated wire safety protection structure, which aims to solve the problem that the BV type copper core polyvinyl chloride insulated wire is easily damaged by external factors in the using process.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a BV type copper core polyvinyl chloride insulated wire safety protection structure, includes BV line copper core, BV line copper core's outside is equipped with the envelope layer, the outside on envelope layer is equipped with the flame retardant coating, the outside of flame retardant coating is equipped with the oversheath, leave the space between flame retardant coating and the oversheath, the surface of flame retardant coating evenly is fixed with a plurality of fixture block, evenly be fixed with a plurality of and the identical draw-in groove of fixture block structure on the inner wall of oversheath, the position one-to-one of fixture block and draw-in groove is corresponding, the outer end of fixture block is inserted and is established the inside of draw-in groove and with draw-in groove sliding connection, just the inside of draw-in groove is equipped with the spring part, and the both ends of spring part are located the inside one end of draw-in groove with the diapire of draw-in groove and fixture block respectively and are connected.

Preferably, a plurality of silica gel elastic balls are filled in a gap between the fire-resistant layer and the outer sheath, and the silica gel elastic balls are closely arranged and distributed with each other.

Preferably, the outer surface of the outer sheath is provided with a plurality of bulges, and the bulges on the outer surface of the outer sheath are in an arc-shaped structure.

Preferably, the fire-resistant layer is a fire-resistant inorganic fiber material, and the thickness of the fire-resistant layer is 0.10-0.20 mm.

Preferably, a PVC insulating layer is arranged outside the BV wire copper core, and flame-retardant rubber particles are filled between the inside of the wire wrapping layer and the PVC insulating layer.

Preferably, a waterproof layer is arranged on the inner wall of the fire-resistant layer and is formed by wrapping a water-blocking tape.

Compared with the prior art, the utility model has the beneficial effects that: this BV type copper core polyvinyl chloride insulated wire safety protection structure can effectually protect the copper core, improves the compressive property of electric wire, increase of service life. This BV type copper core polyvinyl chloride insulated wire safety protection structure's flame retardant coating slides in the draw-in groove through the fixture block and cushions at the effort that the effort of spring part received to the outer sheath for the envelope layer can play the guard action to BV line copper core, improves the outside compressive property in envelope layer, avoids BV line copper core to take place the life-span that the damage influences the use easily.

Drawings

FIG. 1 is a schematic structural view of a BV-type copper-core PVC insulated wire according to the present invention;

fig. 2 is an enlarged structure schematic diagram of a point a in fig. 1 of a BV type copper core polyvinyl chloride insulated wire safety protection structure according to the present invention;

fig. 3 is a schematic view of the internal structure of the outer sheath of the BV type copper core polyvinyl chloride insulated wire safety protection structure of the utility model.

In the figure: 1. BV line copper core, 2, wiring layer, 3, flame retardant coating, 4, oversheath, 5, silica gel bounce ball, 6, PVC insulating layer, 7, fire-retardant rubber granule, 8, waterproof layer, 9, fixture block, 10, draw-in groove, 11, spring part.

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. 1-3, the present invention provides a technical solution: a BV type copper core polyvinyl chloride insulated wire safety protection structure, including BV line copper core 1, BV line copper core 1's outside is equipped with envelope layer 2, envelope layer 2's outside is equipped with flame retardant coating 3, flame retardant coating 3's outside is equipped with oversheath 4, leave the space between flame retardant coating 3 and the oversheath 4, flame retardant coating 3's surface evenly is fixed with a plurality of fixture block 9, evenly be fixed with a plurality of and fixture block 9 structure identical draw-in groove 10 on the inner wall of oversheath 4, fixture block 9 is corresponding one-to-one with the position of draw-in groove 10, the inside of establishing at draw-in groove 10 is inserted and with draw-in groove 10 sliding connection to fixture block 9's outer end, and the inside of draw-in groove 10 is equipped with spring part 11, and the both ends of spring part 11 are connected with the diapire of draw-in groove 10 and the one end that fixture block 9 is located the draw-in groove 10 respectively, this structure is when oversheath 4 receives external environment's effort as outer environment, flame retardant coating 3 can slide in draw-in groove 10 through fixture block 9 and the effort that outer sheath 4 received at the effort of fixture block 11 to outer sheath 4 Buffering is carried out, so that the wrapping line layer 2 can play a certain role in protecting the BV wire copper core 1, the compression resistance outside the wrapping line layer 2 is improved, the BV wire copper core 1 is prevented from being damaged easily to influence the service life, a plurality of silica gel elastic balls 5 are filled in a gap between the fire-resistant layer 3 and the outer sheath 4, the silica gel elastic balls 5 are distributed in a close arrangement mode, the silica gel elastic balls 5 in the structure can also buffer external force on the outer sheath 4 through compression of the gap between the fire-resistant layer 3 and the outer sheath 4, the compression resistance outside the wrapping line 2 is further improved, a plurality of bulges are arranged on the outer surface of the outer sheath 4, the bulges on the outer surface of the outer sheath 4 are of an arc-shaped structure, the bulges on the outer surface of the outer sheath 4 can reduce the contact area of the outer sheath 4 with the ground in the pulling process, and the phenomenon that the outer sheath 4 is abraded to greatly influence the service life is avoided, flame retardant coating 3 is fire-resistant inorganic fiber material, and the thickness of flame retardant coating 3 is 0.10-0.20mm, BV line copper core 1's outside is equipped with PVC insulating layer 6, and be filled with fire-retardant rubber granule 7 between the inside of covering wire layer 2 and the PVC insulating layer 6, this structure flame retardant coating 3 and fire-retardant rubber granule 7 can play dual fire-proof's effect to BV line copper core 1 simultaneously, reduce BV line copper core 1 because the conflagration hidden danger that the electric load is great and bring, be equipped with waterproof layer 8 on the inner wall of flame retardant coating 3, and waterproof layer 8 is formed around the package by the area of hindering, this structure waterproof layer 8 can effectually prevent that steam from permeating covering wire layer 2's inside from causing the influence to BV line copper core 1.

The working principle is as follows: when the BV-type copper core polyvinyl chloride insulated wire safety protection structure is used, firstly, when the outer sheath 4 is under the action force of the external environment, certain contraction can be generated, when the outer sheath 4 contracts, the clamping groove 10 is driven to slide outside the clamping block 9, then the fire-retardant layer 3 extrudes the spring part 11 through the clamping block 9 and resets the action force applied to the outer sheath 4 to buffer, and meanwhile, the silica gel elastic ball 5 can also buffer the external force applied to the outer sheath 4 through the compression of a gap between the fire-retardant layer 3 and the outer sheath 4 when the action force is applied, so that the fire-retardant layer 3 can play a certain compression resistance role outside the covering wire layer 2, the phenomenon that the BV wire copper core 1 is easily damaged to influence the service life is avoided, when the BV wire copper core 1 is used under a large electric load, the fire-retardant layer 3 and the flame-retardant rubber particles 7 can play a role of double fire prevention on the BV wire copper core 1 simultaneously, avoid BV line copper core 1 to be on fire and bring the incident to when oversheath 4 at the in-process of dragging, the arch of oversheath 4 surface can make oversheath 4 reduce with the area of ground contact, avoid the big life-span of influence use of oversheath 4 wearing and tearing, BV line copper core 1 is at the in-process that uses simultaneously, waterproof layer 8 can prevent that steam from permeating to the inside on envelope curve layer 2 and causing the influence to BV line copper core 1, thereby accomplish a series of works.

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 modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof.

Claims

1. The utility model provides a BV type copper core polyvinyl chloride insulated wire safety protection structure, includes BV line copper core (1), the outside of BV line copper core (1) is equipped with envelope layer (2), its characterized in that: the fireproof layer (3) is arranged outside the wire wrapping layer (2), the outer portion of the fireproof layer (3) is provided with the outer sheath (4), a gap is reserved between the fireproof layer (3) and the outer sheath (4), the outer surface of the fireproof layer (3) is uniformly fixed with a plurality of clamping blocks (9), a plurality of clamping grooves (10) matched with the clamping blocks (9) in structure are uniformly fixed on the inner wall of the outer sheath (4), the clamping blocks (9) correspond to the clamping grooves (10) in position one to one, the outer ends of the clamping blocks (9) are inserted into the clamping grooves (10) and are in sliding connection with the clamping grooves (10), the spring parts (11) are arranged inside the clamping grooves (10), and the two ends of the spring parts (11) are connected with the bottom wall of the clamping grooves (10) and one end, located inside the clamping blocks (9), of the clamping grooves (10) respectively.

2. The BV type copper core PVC insulated wire safety protection structure of claim 1, wherein: a plurality of silica gel elastic balls (5) are filled in a gap between the fire-resistant layer (3) and the outer sheath (4), and the silica gel elastic balls (5) are mutually and tightly arranged and distributed.

3. The BV type copper core PVC insulated wire safety protection structure of claim 1, wherein: the outer surface of the outer sheath (4) is provided with a plurality of bulges, and the bulges on the outer surface of the outer sheath (4) are of an arc-shaped structure.

4. The BV type copper core PVC insulated wire safety protection structure of claim 1, wherein: the fire-resistant layer (3) is made of fire-resistant inorganic fiber materials, and the thickness of the fire-resistant layer (3) is 0.10-0.20 mm.

5. The BV type copper core PVC insulated wire safety protection structure of claim 1, wherein: the BV wire copper core (1) is provided with a PVC insulating layer (6) at the outside, and flame-retardant rubber particles (7) are filled between the inside of the wire wrapping layer (2) and the PVC insulating layer (6).

6. The BV type copper core PVC insulated wire safety protection structure of claim 1, wherein: the fireproof coating is characterized in that a waterproof layer (8) is arranged on the inner wall of the fireproof layer (3), and the waterproof layer (8) is formed by wrapping a waterproof belt.