CN201465604U

CN201465604U - 4-core helmet cable

Info

Publication number: CN201465604U
Application number: CN200920097951XU
Authority: CN
Inventors: 韩学军; 杨玉萍; 董华章
Original assignee: Tianjin Weida Weihong Cable Science Co Ltd
Current assignee: Tianjin Weida Weihong Cable Science Co Ltd
Priority date: 2009-07-27
Filing date: 2009-07-27
Publication date: 2010-05-12
Anticipated expiration: 2019-07-27

Abstract

The utility model discloses a 4-core helmet cable which comprises four conductive wire cores and a sheath, wherein the two first conductive wire cores among the four conductive wire cores have sectional area smaller than that of the rest two second conductive wire cores; insulating layers are wrapped outside the two first conductive wire cores and the two second conductive wire cores respectively in an extruding manner; shielding layers mixed by weaving cotton threads and tinning copper wires are arranged outside the insulating layers wrapping the first conductive wire cores, and cotton thread layers are wound outside the insulating layers wrapping the second conductive wire cores, so as to together from four conducting wires; the four conducting wires are symmetrically twisted and wound on a protective layer, and the sheath is sleeved on the outermost layer; the two first conductive wire cores adopt tinning copper conductive wire cores; the two second conductive wire cores adopt tinning copper conductive wire cores; the insulating layers adopt crosslink low-intensity polyethylene insulating layers; and the protection layer adopts a polytetrafluoroethene protection layer. The utility model has the advantages of high reliability of electric signal transmission, flexibility, bending resistance, low-temperature resistance, and light weight, and at the same time, satisfies the requirement of flying environment.

Description

4 core print helmet cables

Technical field

The utility model relates to a kind of 4 core print helmet cables, particularly relates to 4 core print helmet cables of a kind of reliability height with signal of telecommunication transmission, high flexibility, resistance to bend(ing), lower temperature resistance, characteristics in light weight.

Background technology

4 core print helmet cables are products of using on pilot's helmet in aviation field at present.Flight environment of vehicle is had relatively high expectations to this product: must have the signal of telecommunication and pass the reliability connect, high flexibility, resistance to bend(ing), lower temperature resistance, characteristics such as in light weight.

Usually, because general its mechanical strength of lead of polyethylene insulation that adopts is relatively poor, metal knitted structure is adopted in single line shielding, therefore under specific flight environment of vehicle condition, exist that cable is hard, resistance to bend(ing) can be poor, owing to problems such as strum generation electrical noise machinery noise and electrostatic interference.

Summary of the invention

Technical problem to be solved in the utility model is, a kind of 4 core print helmet cables that the signal of telecommunication passes the reliability height that connects, high flexibility, resistance to bend(ing), lower temperature resistance, characteristics in light weight that have are provided.

The technical scheme that the utility model adopted is: a kind of 4 core print helmet cables, include four conductor wire cores and sheath, and the sectional area of two first conductor wire cores in described four conductor wire cores is less than the sectional area of other two second conductor wire cores; The skin of described two first conductor wire cores and two second conductor wire cores extrudes a layer insulating respectively; The arranged outside of the insulating barrier of described parcel first conductor wire core has the screen that is mixed by braiding cotton thread and tinned wird, and the outer felt of the insulating barrier of described parcel second conductor wire core is wound with the cotton thread layer, constitutes four leads jointly; Winding protective layer behind described four leads symmetry stranded cable, outermost layer is with sheath.

Described two first conductor wire cores are the tin-coated copper conductor wire core, and sectional area is 0.14mm ²

Described two second conductor wire cores are the tin-coated copper conductor wire core, and sectional area is 0.35mm ²

Described insulating barrier is the cross-link low-density polyethylene insulating barrier.

Described protective layer adopts the tetrafluoroethene protective layer.

Described sheath adopts the flame-proof elastomer flexible sheath.

4 core print helmet cables of the present utility model owing to adopt said structure and material, are guaranteeing that the signal of telecommunication passes reliability height, softness, resistance to bend(ing), lower temperature resistance, the lightweight while that connects, and has also satisfied the needs of flight environment of vehicle.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Wherein:

1a: the first conductor wire core 1b: second conductor wire core

2: insulating barrier 3: the cotton thread layer

4: screen 5: protective layer

6: sheath

Embodiment

Provide specific embodiment below in conjunction with accompanying drawing, further specify 4 core print helmet cables of the present utility model and how to realize.

As shown in Figure 1,4 core print helmet cables of the present utility model, include four conductor wire cores and sheath 6, described four conductor wire cores are the tin-coated copper conductor wire core, wherein, two is the first conductor wire core 1a, and two is the second conductor wire core 1b, and the sectional area of the described first conductor wire core 1a is 0.14mm ²Sectional area 0.35mm less than the second conductor wire core 1b ²

The skin of described two first conductor wire core 1a and two second conductor wire core 1b extrudes a layer insulating 2 respectively, and described insulating barrier 2 is the cross-link low-density polyethylene insulating barrier.The arranged outside of the insulating barrier 2 of the described parcel first conductor wire core 1a has the screen 4 that is mixed by braiding cotton thread and tinned wird, the outer felt of the insulating barrier 2 of the described parcel second conductor wire core 1b is wound with cotton thread layer 3, can realize the cotton thread filling when making stranded cable, above-mentioned outer field two first conductor wire core 1a and four leads of the two second common formations of conductor wire core 1b of having wrapped up respectively.

Winding protective layer 5 behind described four leads symmetry stranded cable, described protective layer 5 adopts the tetrafluoroethene protective layer.The skin of protective layer 5 is with sheath 6, and described sheath 6 adopts the flame-proof elastomer flexible sheath.

The structure and the main performance of 4 core print helmet cables of present embodiment are as follows:

Project	Index
Project	Index	Core number * nominal cross mm ²	2 * 0.14+2 * 0.35
Outside diameter of cable mm	7.0 _-0.5	Core number * nominal cross mm ²	2 * 0.14+2 * 0.35
Outside diameter of cable mm	7.0 _-0.5	D.C. resistance≤Ω in the time of 20 ℃/km	0.14mm ²: 140; 0.35mm ²: 65
Insulation resistance in the time of 20 ℃ 〉=M Ω m	50	D.C. resistance≤Ω in the time of 20 ℃/km	0.14mm ²: 140; 0.35mm ²: 65
Insulation resistance in the time of 20 ℃ 〉=M Ω m	50	Proof voltage	50Hz 0.8kV 1min
Bend test	After-55 ℃ ± 3 ℃ bendings were stretched 5 times, insulation resistance was not less than 5M Ω m; After bending was stretched 1500 times under the normal temperature, insulation resistance was not less than 5M Ω m.	Proof voltage	50Hz 0.8kV 1min
Bend test		Calculated mass kg/km	53.8

Claims

1. a core print helmet cable includes four conductor wire cores and sheath (6), it is characterized in that, the sectional area of two first conductor wire cores (1a) in described four conductor wire cores is less than the sectional area of other two second conductor wire cores (1b); The skin of described two first conductor wire cores (1a) and two second conductor wire cores (1b) extrudes a layer insulating (2) respectively; The arranged outside of the insulating barrier (2) of described parcel first conductor wire core (1a) has the screen (4) that is mixed by braiding cotton thread and tinned wird, the outer felt of the insulating barrier (2) of described parcel second conductor wire core (1b) is wound with cotton thread layer (3), constitutes four leads jointly; Winding protective layer (5) behind described four leads symmetry stranded cable, outermost layer is with sheath (6).

2. 4 core print helmet cables according to claim 1 is characterized in that described two first conductor wire cores (1a) are the tin-coated copper conductor wire core, and sectional area is 0.14mm ²

3. 4 core print helmet cables according to claim 1 is characterized in that described two second conductor wire cores (1b) are the tin-coated copper conductor wire core, and sectional area is 0.35mm ²

4. 4 core print helmet cables according to claim 1 is characterized in that described insulating barrier (2) is the cross-link low-density polyethylene insulating barrier.

5. 4 core print helmet cables according to claim 1 is characterized in that, described protective layer (5) adopts the tetrafluoroethene protective layer.

6. 4 core print helmet cables according to claim 1 is characterized in that, described sheath (6) adopts the flame-proof elastomer flexible sheath.