Directional radiation cable

Abstract

The utility model relates to the technical field of wires and cables, in particular to a directional radiation cable, which is provided with a conductor, an insulating sleeve wrapping the conductor and a shielding sleeve partially wrapping the insulating sleeve, a longitudinal opening on the shielding sleeve not wrapping the insulating sleeve is an electromagnetic wave radiation opening, the cable is further provided with an outer sheath, and the cable is provided with two radiation units which are arranged in parallel at an interval. Each radiation unit is composed of a conductor, an insulating sleeve and a shielding sleeve, the cable is provided with an internal arc-shaped reflecting film, the arc-shaped reflecting film is located on one side of the two radiation units, the inner concave face of the arc-shaped reflecting film faces the radiation units, and the two side edges of the arc-shaped reflecting film are pressed on the shielding sleeves of the two radiation units respectively. The longitudinal openings of the shielding sleeves on the two radiation units face the directional radiation area of the inner concave surface of the arc-shaped reflecting film, the directional radiation area is the area, facing the interval position of the two radiation units, on the inner concave surface of the arc-shaped reflecting film, reflection is enhanced in a directional mode through the double radiation units and the reflecting film, and the signal relay capacity of the cable is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to wire and cable technical field especially a directional radiation cable. BACKGROUND

[0002] Some closed space such as elevator, subway and tunnel etc. cannot carry out communication transmission inside space due to electromagnetic shielding, so need to set up cable to radiate electromagnetic signal to realize signal relay transmission, and currently transmission signal cable usually uses leaky cable, that is, a conductor is wrapped with insulation, and then is covered with shielding, and a leaky window is opened on the shielding to radiate electromagnetic wave, but the radiation efficiency of this kind of cable is not high, leading to that communication signal in the area is not strong. SUMMARY

[0003] The utility model solves the technical problem that provides a directional radiation cable, can have stronger signal relay capability.

[0004] The utility model adopts the technical scheme that a directional radiation cable has a conductor, an insulation sleeve wrapped outside the conductor and a shielding sleeve wrapped with the insulation sleeve partially, a longitudinal opening of the shielding sleeve where the insulation sleeve is not wrapped is an electromagnetic wave radiation port, the cable further has an outer sheath, the cable has two radiation units arranged in parallel and at intervals, each radiation unit is composed of the conductor, the insulation sleeve and the shielding sleeve, the cable has an internal arc-shaped reflecting film, the arc-shaped reflecting film is located at one side of the two radiation units, the concave surface of the arc-shaped reflecting film faces the radiation units, two side edges of the arc-shaped reflecting film are pressed on the shielding sleeves of the two radiation units respectively, the longitudinal openings of the shielding sleeves of the two radiation units all face the directional radiation area of the concave surface of the arc-shaped reflecting film, and the directional radiation area is the area on the concave surface of the arc-shaped reflecting film facing the interval between the two radiation units.

[0005] Specifically, the outer contour of the cross section of the outer sheath is rectangular.

[0006] Further specifically, longitudinal material-reducing grooves for reducing the influence of the outer sheath on the amount of electromagnetic radiation are arranged on the outer sheath in the interval between the two radiation units.

[0007] In order to better show the directional radiation direction, the cross section of the longitudinal material-reducing grooves is in the shape of a large-mouthed splayed shape.

[0008] The directional radiation cable of the utility model radiates electromagnetic wave through the opening of the shielding layer, and the reflection is directional enhanced through the double radiation units and the reflecting film, so that the signal can be conducted to a specific direction and area, and the relay capability of the cable for radiating electromagnetic wave is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is the cross section schematic view of the cable of the utility model.

[0010] In the figure: 1, conductor, 2, insulating sleeve, 3, shielding sleeve, 4, outer sheath, 4-1, longitudinal material-reducing groove, 5, arc-shaped reflecting film. DETAILED DESCRIPTION

[0011] The technical solutions in the embodiments of the utility model will be described in detail below with reference to the accompanying drawings of the utility model specification.

[0012] As shown in the accompanying drawings of the utility model Figure 1 A directional radiation cable has a conductor 1, an insulating sleeve 2 wrapped outside the conductor 1, and a shielding sleeve 3 wrapped partially on the insulating sleeve 2, a longitudinal opening on the shielding sleeve 3 where the insulating sleeve 2 is not wrapped serves as an electromagnetic wave radiation port, the cable also has an outer sheath 4, the cable has two radiation units arranged in parallel and at intervals, each radiation unit is composed of the conductor 1, the insulating sleeve 2, and the shielding sleeve 3, the cable has an internal arc-shaped reflecting film 5, the arc-shaped reflecting film 5 is located on one side of the two radiation units, the inner concave surface of the arc-shaped reflecting film 5 faces the radiation units, two side edges of the arc-shaped reflecting film 5 are pressed on the shielding sleeves 3 of the two radiation units respectively, the longitudinal openings of the shielding sleeves 3 on the two radiation units are all directed to the directional radiation area of the inner concave surface of the arc-shaped reflecting film 5, the directional radiation area is the area on the inner concave surface of the arc-shaped reflecting film 5 that faces the interval between the two radiation units, the outer contour of the cross section of the outer sheath 4 is rectangular, the outer sheath 4 on the interval area between the two radiation units is provided with a longitudinal material-reducing groove 4-1 for reducing the influence of the outer sheath 4 on the amount of electromagnetic radiation, the cross section of the longitudinal material-reducing groove 4-1 is in the shape of an eight-character with the big mouth facing outward.

[0013] The shielding sleeve 3 in the utility model can be made of an aluminum strip, a copper strip, or a steel strip, or a combination of two or three of the three strips, and the arc-shaped reflecting film 5 can be made of a shaped aluminum strip.

[0014] The principles and implementation modes of the utility model are described in the specific examples in this paper, and the above examples are only used to help understand the method and core idea of the utility model; meanwhile, for those skilled in the art, the specific implementation modes and application ranges will be changed according to the idea of the utility model. In conclusion, the content of the specification should not be understood as a limitation of the utility model.

Claims

1. A directional radiation cable having a conductor (1), an insulating jacket (2) surrounding the conductor (1), and a shielding jacket (3) partially surrounding the insulating jacket (2), the longitudinal opening in the shielding jacket (3) where the insulating jacket (2) is not present being an electromagnetic wave radiation opening, the cable further having an outer jacket (4), characterized in that: The cable has two radiation units arranged in parallel and at intervals, each radiation unit is composed of the conductor (1), the insulating sleeve (2) and the shielding sleeve (3), the cable has an internal arc-shaped reflecting film (5) located at one side of the two radiation units, the arc-shaped reflecting film (5) has an inner concave surface facing the radiation units, two side edges of the arc-shaped reflecting film (5) are respectively pressed on the shielding sleeves (3) of the two radiation units, the longitudinal openings of the shielding sleeves (3) of the two radiation units are respectively oriented to the directional radiation area of the inner concave surface of the arc-shaped reflecting film (5), and the directional radiation area is the area on the inner concave surface of the arc-shaped reflecting film (5) facing the interval between the two radiation units. ​ 2. The directional radiating cable of claim 1, wherein: The outer contour of the cross section of the outer sheath (4) is rectangular.

3. The directional radiating cable of claim 2, wherein: The outer sheath (4) is provided with a longitudinal material-reducing groove (4-1) for reducing the influence of the outer sheath (4) on the electromagnetic radiation amount at the interval between the two radiation units.

4. The directional radiating cable of claim 3, wherein: The cross section of the longitudinal material-reducing groove (4-1) is in the shape of an outwardly large-opening eight-character.

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