Power line with rounded rectangle-shaped cross section

Abstract

The utility model relates to the technical field of cables, in particular to a power line with a rounded rectangular cross section, which comprises a first wire core, a second wire core, a third wire core, a wrapping tape, an insulating inner sheath, an armor layer and an insulating outer sheath. The first filling strip comprises four first hollow pipes which are distributed outside the first wire core in a rectangular shape and four first arc-shaped concave strips which are connected with two adjacent first hollow pipes, the second wire core is sleeved with a second filling strip, the second filling strip comprises four second hollow pipes which are distributed outside the second wire core in a rectangular shape, and the first arc-shaped concave strips are connected with two adjacent second arc-shaped concave strips. The two arc-shaped convex strips and the second arc-shaped concave strips are connected with the two adjacent second hollow pipes and are arranged in a staggered manner. According to the utility model, the wire cores are uniformly arranged, and the first filling strip and the second filling strip are tightly attached, so that the power line is compact in layout, square in structure and soft in vision, and has good appearance attractiveness.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable technical field, concretely is a power cord with the cross section of rounded rectangle. BACKGROUND

[0002] The cross section of flat power cord is usually rectangular shape, and its characteristic is that the width is much greater than the height, and this design makes the flat power cord more easily wired and installed in the environment with limited space. The top corner part of the rectangular cross section is prone to stress concentration, so as to reduce the stress concentration and improve the appearance, the utility model provides a power cord with the cross section of rounded rectangle. SUMMARY

[0003] The utility model discloses a power cord with the cross section of rounded rectangle, to solve the problem in the background art.

[0004] To achieve the above object, the utility model provides the following technical scheme: a power cord with the cross section of rounded rectangle, first wire core, second wire core and third wire core are arranged at intervals from left to right and the axis is at the same horizontal plane, the outer of first wire core, the outer of second wire core and the outer of third wire core are collectively extruded and have wrapping tape, the outer of wrapping tape is extruded and has insulating inner sheath, the insulating inner sheath is externally sleeved with armored layer, the armored layer is extruded and has insulating outer sheath, the positive longitudinal section of wrapping tape, insulating inner sheath, armored layer and insulating outer sheath all are rounded rectangle structure, the outer of first wire core and the outer of third wire core are all externally sleeved with first filling strip, the first filling strip includes four first hollow tubes that are distributed in the outer of first wire core in rectangular shape and four first arc concave strips that connect adjacent two first hollow tubes, the outer of second wire core is externally sleeved with second filling strip, the second filling strip includes four second hollow tubes that are distributed in the outer of second wire core in rectangular shape and two arc convex strips and second arc concave strips that are staggered and arranged and connect adjacent two second hollow tubes, the outer side wall of arc convex strip is attached to the outer wall of first arc concave strip.

[0005] Optionally, the outer diameter of the first wire core is equal to the outer diameter of the third wire core, the outer wall of the first hollow tube is tangent to the outer wall of the first wire core, and the inner wall of the first arc concave strip is tangent to the outer wall of the first wire core.

[0006] Optionally, the outer wall of the second hollow tube is tangent to the outer wall of the second wire core, and the inner wall of the second arc concave strip is tangent to the outer wall of the second wire core.

[0007] Optionally, the thickness ratio of the insulating inner sheath and the insulating outer sheath is 1:2, and the armored layer is double-woven by steel wire through a steel wire braider.

[0008] Compared with the prior art, the utility model possess following beneficial effect: The utility model discloses the cross section is rounded rectangle, relative to other flat cable, rounded corner can reduce stress concentration phenomenon, improve the durability and reliability of power cord, the utility model discloses the wire core layout is even, through the close adhesion of first filling strip and second filling strip, power cord layout is compact, structure is square, is soft on vision, has good appearance degree of appearance. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is the structural diagram of the utility model;

[0010] Figure 2 It is the structural diagram of first filling strip and second filling strip in the utility model.

[0011] In the drawing: 1, first wire core;2, second wire core;3, third wire core;4, wrapping tape;5, insulating inner sheath;6, armored layer;7, insulating outer sheath;8, first filling strip;801, first hollow pipe;802, first arc concave strip;9, second filling strip;901, second hollow pipe;902, arc convex strip;903, second arc concave strip. DETAILED DESCRIPTION

[0012] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative efforts fall within the protection scope of the utility model.

[0013] Embodiment: please refer to Figure 1 And Figure 2 The utility model provides a kind of power cord with rounded rectangular cross section, including first wire core 1, second wire core 2 and third wire core 3 from left to right interval arrangement and the axis is at the same horizontal plane, first wire core 1, second wire core 2 and third wire core 3 are respectively power cord's fire line, zero line and ground wire, first wire core 1 outer, second wire core 2 outer and third wire core 3 outer are collectively wrapped with wrapping tape 4, wrapping tape 4 outer is extruded with insulating inner sheath 5, insulating inner sheath 5 outer is connected with armored layer 6, armored layer 6 is double-woven by steel wire through steel wire braider, armored layer 6 outer is extruded with insulating outer sheath 7, and the thickness ratio of insulating inner sheath 5 and insulating outer sheath 7 is 1:2.

[0014] The positive longitudinal section of the wrapping tape 4, the insulating inner sheath 5, the armored layer 6 and the insulating outer sheath 7 is a rounded rectangular structure, and the rounded rectangular structure is that four corners of the rectangle are rounded by 90 degrees. The first filling strip 8 is sleeved on the outside of the first wire core 1 and the third wire core 3, the first filling strip 8 comprises four first hollow tubes 801 distributed in a rectangular shape on the outside of the first wire core 1 and four first arc-shaped concave strips 802 connecting adjacent two first hollow tubes 801, and the second filling strip 9 is sleeved on the outside of the second wire core 2, the second filling strip 9 comprises four second hollow tubes 901 distributed in a rectangular shape on the outside of the second wire core 2 and two arc-shaped convex strips 902 and second arc-shaped concave strips 903 which are staggered and arranged and connect adjacent two second hollow tubes 901, and the outer side wall of the arc-shaped convex strip 902 is attached to the outer wall of the first arc-shaped concave strip 802, and the attachment is close. As shown in Figure 1 the outer side wall of the first arc-shaped concave strip 802 on the rightmost side of the first wire core 1 on the left side is attached to the outer side wall of the arc-shaped convex strip 902 on the leftmost side, and the outer side wall of the first arc-shaped concave strip 802 on the leftmost side of the first wire core 1 on the right side is attached to the outer side wall of the arc-shaped convex strip 902 on the rightmost side.

[0015] The first filling strip 8 and the second filling strip 9 are both formed by extrusion of PP material, the outer diameter of the first wire core 1 is equal to the outer diameter of the third wire core 3, the outer wall of the first hollow tube 801 is tangent to the outer wall of the first wire core 1, and the inner wall of the first arc-shaped concave strip 802 is tangent to the outer wall of the first wire core 1. The outer wall of the second hollow tube 901 is tangent to the outer wall of the second wire core 2, and the inner wall of the second arc-shaped concave strip 903 is tangent to the outer wall of the second wire core 2. The outer wall of the first hollow tube 801 and the outer wall of the second hollow tube 901 are respectively tangent to the inner wall of the wrapping tape 4.

[0016] The cross section of the utility model is a rounded rectangle, and compared with other flat cables, the rounded corners can reduce stress concentration and improve the durability and reliability of the power cord. In the utility model, the wire cores are arranged uniformly, the power cord is compact in layout and square in structure through close attachment of the first filling strip 8 and the second filling strip 9, and the power cord is soft in vision and has good appearance.

[0017] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A power cable with a cross section of a rounded rectangle, comprising a first core (1), a second core (2) and a third core (3) arranged in a row from left to right and with their axes in the same horizontal plane, the first core (1) being surrounded by a wrapping tape (4) which is in turn surrounded by an inner insulating sheath (5), the inner insulating sheath (5) being in turn surrounded by an armour layer (6) which is in turn surrounded by an outer insulating sheath (7), characterized in that: The positive longitudinal section of the wrapping tape (4), the insulating inner sheath (5), the armor layer (6) and the insulating outer sheath (7) are all circular rectangular structures, the outer of the first wire core (1) and the outer of the third wire core (3) are sleeved with first filling strips (8), the first filling strips (8) include four first hollow tubes (801) distributed in a rectangular manner outside the first wire core (1), and four first arc concave strips (802) connecting adjacent two first hollow tubes (801), the outer of the second wire core (2) is sleeved with a second filling strip (9), the second filling strip (9) includes four second hollow tubes (901) distributed in a rectangular manner outside the second wire core (2), and two arc convex strips (902) and second arc concave strips (903) connecting adjacent two second hollow tubes (901) and staggered arranged, the outer side wall of the arc convex strip (902) is attached to the outer wall of the first arc concave strip (802).

2. A power cord having a rounded rectangular cross-section according to claim 1, characterized in that: The outer diameter of the first wire core (1) is equal to the outer diameter of the third wire core (3), the outer wall of the first hollow tube (801) is tangent to the outer wall of the first wire core (1), and the inner wall of the first arc concave strip (802) is tangent to the outer wall of the first wire core (1).

3. The power cord of claim 1, wherein: The outer wall of the second hollow tube (901) is tangent to the outer wall of the second wire core (2), and the inner wall of the second arc concave strip (903) is tangent to the outer wall of the second wire core (2).

4. The power cord of claim 1, wherein: The thickness ratio of the insulating inner sheath (5) and the insulating outer sheath (7) is 1:2, and the armor layer (6) is double-woven by steel wire through a steel wire braider.

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