CN211404124U

CN211404124U - Three-core structure cable

Info

Publication number: CN211404124U
Application number: CN202020097703.1U
Authority: CN
Inventors: 刘志红; 刘晓鹏
Original assignee: Shijiazhuang Opel Cable Co ltd
Current assignee: Shijiazhuang Dingniu Cable Co ltd
Priority date: 2020-01-16
Filing date: 2020-01-16
Publication date: 2020-09-01
Anticipated expiration: 2030-01-16

Abstract

The utility model relates to a three-core structure cable, including three sinle silk, set up at the outside inner sheath of three sinle silk respectively and with the oversheath that three sinle silk was in the same place, the inner sheath sets up the circular cover to low smoke and zero halogen crosslinked plastic material, the oversheath sets up the annular sheath to polyvinyl chloride plastic material, the oversheath laminating is in the outside of three inner sheath, the thickness of oversheath is less than the thickness of inner sheath, and is three the inner sheath is triangular distribution or the axis sets up on the coplanar. The utility model discloses a cable course of working is simple, has higher structural strength and security, and is refractiveness and high temperature resistance can be high, long service life.

Description

Three-core structure cable

Technical Field

The utility model belongs to the technical field of the technique of cable and specifically relates to a three-core structure cable is related to.

Background

The low-voltage cable is composed of a wire core, an insulating layer and a protective layer. The wire core is used for conducting current and is generally formed by stranding a plurality of copper wires or a plurality of aluminum wires. The low-voltage cable comprises a single core, a double core, a three core, a four core and the like. The two-core cable is used for a single-phase line, and the three-core cable and the four-core cable are respectively used for a three-phase three-wire system line and a three-phase four-wire system line. The three-core cable comprises a live wire, a zero wire and a ground wire, is commonly used in household circuits and is used as a power line of household appliances, so that the three-core cable has higher requirements on safety and durability.

Chinese patent with publication number CN204632351U discloses a three-core cable, which comprises an outer covering layer, a first cable, a second cable, and a third cable, wherein the first cable, the second cable, and the third cable are disposed in the outer covering layer, hose protection layers are disposed in the outer covering layer corresponding to the first cable, the second cable, and the third cable, respectively, and the first cable, the second cable, and the third cable are disposed in the hose protection layer, respectively, and there are three hose protection layers.

The above prior art solutions have the following drawbacks: the three-core cable is complex in structure, multi-step processing is required in the production process, and stripping of the outer layer is troublesome when the cable is connected.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a three-core structure cable, the course of working is simple, has higher structural strength and security, and is fire-resistant and high temperature resistance can be high, long service life.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides a three-core structure cable, includes three sinle silk, sets up the outer oversheath of inner sheath and with three sinle silk core package together in three sinle silk outside respectively, the inner sheath sets up the circular cover to low smoke and zero halogen crosslinked plastic material, the oversheath sets up the annular cover to polyvinyl chloride plastics or irradiation rubber.

Through adopting above-mentioned technical scheme, low smoke and zero halogen crosslinked plastics is adopted as the inner sheath in the outside of sinle silk, the inner sheath wraps the sinle silk completely, play the first layer guard action, the fixed integration of oversheath by polyvinyl chloride plastics material is in the same place in the three sinle silk outside again, two-layer sheath is protected, the structural strength of cable has been strengthened, inlayer low smoke and zero halogen crosslinked plastics, the refractiveness and the high temperature resistance of cable have been promoted, outer polyvinyl chloride plastics, the hardness and the manufacturing cost of cable have been reduced, the ageing-resistant performance of cable has also obtained showing the reinforcing simultaneously, life has obtained great extension, the security is guaranteed, three sinle silk and inner sheath simultaneous processing are in the same place, the course of working has been simplified, the processing degree of difficulty has been reduced.

The present invention may be further configured in a preferred embodiment as: and the three inner sheaths are in a parallel structure formed by injection molding at one time.

Through adopting above-mentioned technical scheme, the inner sheath adopts one shot forming's parallel structure, has simplified the production step of cable, has guaranteed the connection compactness between the three sinle silk, has strengthened the overall structure intensity of inner sheath.

The present invention may be further configured in a preferred embodiment as: the three inner sheaths are distributed in a triangular mode, the center of each inner sheath is provided with a filling belt, and the filling belts are cylinders made of polyvinyl chloride plastics.

Through adopting above-mentioned technical scheme, three inner sheath is triangular distribution, makes the contact of three sinle silk inseparabler, can reduce the cross sectional area of whole cable, save material, and the elasticity in area is filled in the center to the setting of area, utilizes to fill the elasticity in area, can strengthen the compressive capacity and the deformation recovery ability of cable.

The present invention may be further configured in a preferred embodiment as: the connection face outside of two adjacent inner sheaths is provided with the tangent line groove, the tangent line groove is arranged along the axis direction of sinle silk.

Through adopting above-mentioned technical scheme, the setting of tangent line groove when carrying out the cable wiring can be fixed a position through the tangent line groove, separates the combination of three sinle silk and inner sheath along the tangent line groove, can avoid cutting the sinle silk and damage the inner sheath, guarantees the connection safety between the circuit.

The present invention may be further configured in a preferred embodiment as: the outer wall of the outer sheath is circular, the inner wall of the outer sheath is attached to the outer wall of the three inner sheaths in shape, and a filling strip extending into the tangent groove is arranged.

Through adopting above-mentioned technical scheme, make the external shape of cable more regular, inner structure is compacter, and the cable is difficult for taking place to warp.

The present invention may be further configured in a preferred embodiment as: the outer sheaths are attached to the outer sides of the three inner sheaths, and the thickness of the outer sheaths is smaller than that of the inner sheaths.

Through adopting above-mentioned technical scheme, reduced the holistic cross-section size of cable, can save material, reduce the hardness of cable simultaneously.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the utility model discloses a cable adopts two-layer sheath to protect the sinle silk, and inner sheath protection sinle silk, the three inner sheath of oversheath protection have strengthened the guard action to the sinle silk, and two-layer sheath inlayer adopts low smoke and zero halogen crosslinked plastics, and the skin adopts polyvinyl chloride plastics, makes the refractiveness and the high temperature resistance of whole cable all promote greatly, and ageing resistance is good, long service life, low in production cost.

2. The three inner sheaths of cable adopt one shot forming's mode of production, have guaranteed the joint strength of three inner sheath, reduce the production degree of difficulty, make three inner sheath keep the parallelism, have guaranteed the processingquality of cable.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

In the figure, 1, a wire core, 2, an inner sheath, 21, a filling belt, 22, a cutting groove, 3, an outer sheath, 31 and a filling strip.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses a three-core structure cable, including sinle silk 1, set up respectively at the outside inner sheath 2 of three sinle silk 1 and with the oversheath 3 of three sinle silk 1 package together, sinle silk 1 is formed by the coiling of stranded copper wire or aluminum wire, inner sheath 2 sets up to the circular cover of low smoke and zero halogen crosslinked plastic material, encase and keep apart three sinle silk 1 respectively, oversheath 3 sets up to the annular cover of low smoke and zero halogen crosslinked plastic material or irradiation rubber material, pack the combination of three sinle silks 1 of group and inner sheath 2 together, become a complete cable structure. The outer sheath 3 is attached to the outer sides of the three inner sheaths 2, and the thickness of the outer sheath 3 is smaller than that of the inner sheaths 2, so that the size of the whole cross section of the cable is reduced, materials can be saved, and meanwhile, the hardness of the cable is reduced.

Referring to fig. 1, three inner sheath 2 is injection moulding's parallel structure in this embodiment, and three sinle silk 1 is triangular distribution in three apex angle position, makes 2 extrusion of inner sheath through three hole moulds, makes three inner sheath 2 closely combine together, and inner sheath 2 adopts one shot forming's structure, then wraps oversheath 3 in 2 outside packages of three inner sheath, and the production step of cable has been simplified to whole process, has guaranteed the connection compactness between three sinle silk 1, has strengthened the overall structure intensity of inner sheath 2. The cable is when carrying out the wiring, need separate three sinle silk 1, need peel off inner sheath 2 in connecting face department, in order to reduce the degree of difficulty of peeling off, the face outside of being connected of two adjacent inner sheaths 2 is provided with tangent line groove 22, tangent line groove 22's transversal U-shaped of personally submitting, the axis direction of core 1 arranges along the line, when peeling off three inner sheath 2, can fix a position through tangent line groove 22, separate three sinle silk 1 and inner sheath 2's combination along tangent line groove 22, can avoid cutting sinle silk 1 and damage inner sheath 2, guarantee the connection safety between the circuit. The outer wall of outer sheath 3 is circular in this embodiment, and the outer wall shape laminating of inner wall and three inner sheath 2 to be provided with the filler strip 31 that stretches into in the tangent groove 22, reduce the inside cavity of cable.

Three inner sheath 2 is triangular distribution, makes the contact of three sinle silk inseparabler, can reduce the cross sectional area of whole cable, and the center of three inner sheath 2 is provided with and fills area 21, and the cylinder that fills area 21 set up to polyvinyl chloride plastics material utilizes the elasticity of filling area 21, can strengthen the compressive capacity and the deformation recovery ability of cable.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A three-core structure cable, characterized in that: the cable comprises three cable cores (1), an inner sheath (2) and an outer sheath (3), wherein the inner sheath (2) is arranged outside the three cable cores (1) respectively, the outer sheath (3) wraps the three cable cores (1) together, the inner sheath (2) is a circular sheath made of low-smoke halogen-free crosslinked plastic, and the outer sheath (3) is an annular sheath made of polyvinyl chloride plastic or irradiated rubber; it is three inner sheath (2) is injection moulding's parallel structure, three inner sheath (2) are triangular distribution, and is three the center of inner sheath (2) is provided with and fills area (21), it sets up to the cylinder of polyvinyl chloride plastics material to fill area (21).

2. A three-core structured cable according to claim 1, wherein: the outer side of the connecting surface of the two adjacent inner sheaths (2) is provided with a tangent groove (22), and the tangent groove (22) is arranged along the axis direction of the wire core (1).

3. A three-core structured cable according to claim 2, wherein: the outer wall of the outer sheath (3) is circular, the inner wall of the outer sheath is attached to the outer wall of the three inner sheaths (2) in shape, and a filling strip (31) extending into the tangent groove (22) is arranged.

4. A three-core structured cable according to claim 1, wherein: the outer sheath (3) is attached to the outer sides of the three inner sheaths (2), and the thickness of the outer sheath (3) is smaller than that of the inner sheaths (2).