CN212967195U

CN212967195U - Three-core cable of plug wire

Info

Publication number: CN212967195U
Application number: CN202022274052.1U
Authority: CN
Inventors: 金美都
Original assignee: Zhejiang Anda Wire And Cable Co ltd
Current assignee: Zhejiang Anda Wire And Cable Co ltd
Priority date: 2020-10-13
Filing date: 2020-10-13
Publication date: 2021-04-13
Anticipated expiration: 2030-10-13

Abstract

The utility model provides a three-core cable of plug cord belongs to mechanical technical field. It has solved the easy problem of damaging of current cable pressurized. The cross section of the plug wire three-core cable is circular, the plug wire three-core cable comprises wire cores, a shielding layer and a protective layer which are sequentially arranged from inside to outside, three wire cores are arranged, an inner metal layer in a circular tube shape is sleeved outside each wire core, a reinforcing part is integrally formed on the outer wall of the inner metal layer and is in a solid long strip shape, and the length of the reinforcing part extends along the axial direction of the inner metal layer; in same interior metal layer, the rib has a plurality ofly and along interior metal layer circumference interval equipartition, and integrated into one piece has the strip body between two adjacent ribs, and the strip body is transversal personally submitting arc, and rib both ends face and strip body both ends face are equallyd divide and are leveled with interior metal layer both ends face respectively, and strip body, interior metal layer and two rib four of being connected with the strip body form the equal open-ended bar chamber in both ends, and shielding layer and bar intracavity all fill have the reinforcing fiber silk. This plug cord three-core cable compressive capacity is strong.

Description

Three-core cable of plug wire

Technical Field

The utility model belongs to the wire and cable field relates to a plug cord, especially a three-core cable of plug cord.

Background

The plug cord is also called a power plug cord or a plug power cord, and is used for transmitting current, and the current transmission mode is point-to-point transmission.

Existing plug cords typically consist of a plug and a cable electrically connected to the plug. When the plug cord is used outdoors, the cable has certain probability of being damaged by pressure (such as being pressed by tires and stones), and normal use of the plug cord is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at having the above-mentioned problem to current technique, provided a plug cord three-core cable that compressive capacity is strong.

The purpose of the utility model can be realized by the following technical proposal: the cross section of the three-core cable of the plug wire is circular, the three-core cable comprises wire cores, a shielding layer and a protective layer which are sequentially arranged from inside to outside, and the three wire cores are characterized in that an inner metal layer in a circular tube shape is sleeved outside each wire core, a reinforcing part is integrally formed on the outer wall of the inner metal layer, the reinforcing part is in a solid long strip shape, and the length of the reinforcing part extends along the axial direction of the inner metal layer; in the same inner metal layer, a plurality of reinforcing parts are uniformly distributed at intervals along the circumferential direction of the inner metal layer, a strip body is integrally formed between every two adjacent reinforcing parts, the cross section of the strip body is arc-shaped, two end surfaces of each reinforcing part and two end surfaces of the strip body are respectively flush with two end surfaces of the inner metal layer, and the strip body, the inner metal layer and the two reinforcing parts connected with the strip body form a strip-shaped cavity with two open ends; the shielding layer and the strip-shaped cavity are filled with reinforced fiber yarns.

All fill reinforcing fiber silk in shielding layer and bar intracavity to form powerful protection and powerful the support respectively including the outside and the inboard of metal level, thereby effectively reduce interior metal layer deformation degree when pressurized, with better protection sinle silk.

In the above three-core plug wire cable, the thickness of the reinforcing part extends along the radial direction of the inner metal layer, the cross section of the reinforcing part is trapezoidal, the cross section of the reinforcing part comprises an upper bottom and a lower bottom, and the lower bottom is located between the upper bottom and the inner metal layer. At this moment, the width of the reinforcing part is gradually increased from outside to inside, the bearing contact area of the reinforcing part is reduced, and meanwhile, the supporting area of the inner metal layer on the reinforcing part is increased, so that the pressure resistance of the reinforcing part is effectively improved, and the compression deformation degree of the inner metal layer is further reduced.

In the plug wire three-core cable, the reinforced fiber yarns are aramid fibers. The aramid fiber has the excellent performances of ultrahigh strength, high modulus, high temperature resistance, acid and alkali resistance, light weight and the like.

In the three-core cable of the plug wire, the sheath layer comprises an outer metal layer and a rubber layer which are sequentially arranged from inside to outside.

In the above three-core plug wire cable, the sheath layer further includes a plastic insulating layer, and the plastic insulating layer is located between the shielding layer and the outer metal layer. The plastic insulating layer has certain elasticity and can buffer a part of pressure.

In the above-described plug wire three-core cable, 6 of the above-described reinforcing portions are provided on each inner metal layer.

Compared with the prior art, the three-core cable of the plug wire has the following advantages:

1. all fill reinforcing fiber silk in shielding layer and bar intracavity to form powerful protection and powerful the support respectively including the outside and the inboard of metal level, thereby effectively reduce interior metal layer deformation degree when pressurized, with better protection sinle silk.

2. The transversal trapezoidal of personally submitting of rib, and the width is by outer grow gradually to interior, when reducing the atress area of contact of rib, increases the support area of interior metal level to rib again to effectively improve the compressive property of rib, further reduce interior metal level compressive deformation degree.

Drawings

Fig. 1 is a cross-sectional view of a plug wire three-core cable.

Fig. 2 is a cross-sectional view of the inner metal layer.

In the figure, 1, a wire core; 2. a shielding layer; 3. a plastic insulating layer; 4. an outer metal layer; 5. a rubber layer; 6. an inner metal layer; 6a, a reinforcement; 6b, a strip body; 6c, strip-shaped cavities; 7. and (3) reinforcing fiber yarns.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, the cross section of the plug wire three-core cable is circular, and the plug wire three-core cable comprises a wire core 1, a shielding layer 2 and a protective layer which are sequentially arranged from inside to outside. The cable comprises a plurality of cable cores 1, wherein the cable cores 1 are uniformly distributed at intervals along the circumferential direction, and the cable cores 1 generally comprise copper cores and insulating layers wrapped outside the copper cores; the protective layer comprises a plastic insulating layer 3, an outer metal layer 4 and a rubber layer 5 which are sequentially arranged from inside to outside.

Specifically, as shown in fig. 1 and fig. 2, an inner metal layer 6 in a circular tube shape is sleeved outside each wire core 1, and an inner side wall of the inner metal layer 6 is attached to an outer side wall of the wire core 1. As shown in fig. 1, a reinforcing portion 6a is integrally formed on the outer wall of the inner metal layer 6, the reinforcing portion 6a is in a solid elongated shape, and the length of the reinforcing portion 6a extends in the axial direction of the inner metal layer 6. In the same inner metal layer 6, a plurality of reinforcing parts 6a are uniformly distributed at intervals along the circumferential direction of the inner metal layer 6, and a strip body 6b is integrally formed between every two adjacent reinforcing parts 6a, at the moment, the length of the strip body 6b extends along the axial direction of the inner metal layer 6, the cross section of the strip body 6b is arc-shaped, and two end faces of the reinforcing parts 6a and two end faces of the strip body 6b are respectively flush with two end faces of the inner metal layer 6. The strip body 6b, the inner metal layer 6 and the two reinforcing parts 6a connected with the strip body 6b form a strip-shaped cavity 6c with two open ends, and the shielding layer 2 and the strip-shaped cavity 6c are filled with reinforcing fiber yarns 7. All fill reinforcing fiber 7 in shielding layer 2 and bar chamber 6c to form powerful protection and powerful support respectively in the outside and the inboard of metal level 6, thereby the metal level 6 degree of deformation when effectively reducing the pressurized, with better protection sinle silk 1.

In the present embodiment, each inner metal layer 6 is provided with 6 reinforcing portions 6 a; the reinforced fiber yarn 7 is made of aramid fiber. The thickness of rib 6a extends along the radial of inner metal layer 6, and rib 6 a's cross section is trapezoidal, and rib 6 a's cross section includes upper base and lower bottom, and the lower bottom is located between upper base and inner metal layer 6. That is, at this time, the width of the reinforcing portion 6a gradually increases from the outside to the inside, and the force-receiving contact area of the reinforcing portion 6a is reduced, and at the same time, the supporting area of the inner metal layer 6 for the reinforcing portion 6a is increased, so that the pressure resistance of the reinforcing portion 6a is effectively improved, and the degree of deformation of the inner metal layer 6 under pressure is further reduced.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The cross section of the three-core cable of the plug cord is circular, the three-core cable comprises cable cores (1), shielding layers (2) and protective layers which are sequentially arranged from inside to outside, and the number of the cable cores (1) is three, the three-core cable is characterized in that each cable core (1) is externally sleeved with an inner metal layer (6) in a circular tube shape, a reinforcing part (6a) is integrally formed on the outer wall of the inner metal layer (6), the reinforcing part (6a) is in a solid long strip shape, and the length of the reinforcing part (6a) extends along the axial direction of the inner metal layer (6); in the same inner metal layer (6), a plurality of reinforcing parts (6a) are uniformly distributed at intervals along the circumferential direction of the inner metal layer (6), a strip body (6b) is integrally formed between every two adjacent reinforcing parts (6a), the cross section of the strip body (6b) is arc-shaped, two end faces of each reinforcing part (6a) and two end faces of each strip body (6b) are respectively flush with two end faces of the inner metal layer (6), and strip cavities (6c) with two open ends are formed by the strip body (6b), the inner metal layer (6) and the two reinforcing parts (6a) connected with the strip body (6 b); the shielding layer (2) and the strip-shaped cavity (6c) are filled with reinforced fiber yarns (7).

2. The plug wire three-core cable according to claim 1, wherein the thickness of the reinforcement portion (6a) extends in a radial direction of the inner metal layer (6), the cross section of the reinforcement portion (6a) is trapezoidal, the cross section of the reinforcement portion (6a) includes an upper base and a lower base, and the lower base is located between the upper base and the inner metal layer (6).

3. Plug wire three-core cable according to claim 1 or 2, characterized in that the reinforcement fibre filaments (7) are aramid fibres.

4. The plug wire three-core cable according to claim 1, wherein the sheath comprises an outer metal layer (4) and a rubber layer (5) arranged in sequence from inside to outside.

5. The plug wire three-core cable according to claim 4, characterized in that the sheath further comprises a plastic insulation layer (3), and the plastic insulation layer (3) is between the shielding layer (2) and the outer metal layer (4).

6. Plug wire three-core cable according to claim 1 or 2, characterised in that 6 of the above-mentioned reinforcements (6a) are provided on each inner metal layer (6).