CN206833991U - Skeleton high-frequency digital optical electrical hybrid cable - Google Patents

Abstract

The utility model relates to a skeleton-type high-frequency digital photoelectric hybrid cable. The cross-section of the skeleton is a cross-shaped frame, and twisted wires are fixed between the frames. The top of the frame is provided with a "Y"-shaped opening bracket. A tight sleeve optical fiber is fixed and constitutes a cable core; the cable core is wrapped with a tape, and the tape is wrapped with a sheath. The utility model adopts a novel skeleton structure, which can simultaneously place digital signal pair twisted wires and tight-sleeved optical fibers to realize co-cable photoelectricity, which reduces costs and saves resources. The data signal cable is isolated and fixed due to the skeleton structure, the cable core structure is stable, and the return loss of the digital communication cable is small, which can realize higher rate transmission.

Description

Skeleton High Frequency Digital Optical Hybrid Cable

technical field

The utility model relates to a composite communication cable, in particular to a frame-type high-frequency digital photoelectric hybrid cable.

technical background

Traditional optical hybrid cables generally use digital twisted wires and optical fiber bundle tubes or tight-sleeved optical fibers to spirally mix around the central strength member. Since the optical fibers and twisted wires are not effectively isolated during the cabling process, the surroundings of the optical fibers cannot be well protected. , the optical fiber is easily squeezed, increasing the loss of the optical fiber and reducing the service life of the optical fiber.

Utility model content

The purpose of this utility model is to provide a new type of skeleton structure to isolate digital twisted wire pairs and tight-sleeved optical fibers, so that the twisted wire pairs and optical fibers have independent spaces respectively, so as to ensure that the optical fibers are not squeezed by the twisted wire pairs, thereby ensuring the loss of optical fibers No increase, to ensure that the service life of the optical fiber meets the design requirements.

The utility model adopts the following technical solutions to achieve the above object. Skeleton-type high-frequency digital-optical hybrid cable, including a pair of twisted wires and a skeleton, the pair of twisted wires is composed of a conductor and an insulating layer wrapped outside the conductor, the cross-section of the skeleton is a cross-shaped frame, and the frames are fixed with For twisted wires, the top of the frame is provided with a "Y"-shaped opening bracket, and a tight-sleeved optical fiber is fixed in the bracket, which constitutes a cable core; the cable core is wrapped with a tape, and the tape is wrapped with a sheath.

The utility model adopts a novel frame structure, which can place digital signal twisted wires and tight-sleeved optical fibers at the same time, realizes co-cables of photoelectricity, reduces costs, and saves resources. The data signal cable is isolated and fixed due to the skeleton structure, the cable core structure is stable, and the return loss of the digital communication cable is small, which can realize higher rate transmission. The sheath is made of halogen-free flame-retardant polyolefin material, which is suitable for indoor laying, and the tight-buffered optical fiber is well protected in the cable core. It can meet the needs of optical fiber communication and ordinary data communication, and is especially suitable for integrated access of various services. Compared with traditional optical cables and data cables that are cabled and laid separately, the sheath material is saved, and the production cost and laying cost are reduced.

Description of drawings

Fig. 1 is a schematic cross-sectional structure diagram of a skeleton-type high-frequency digital-optical hybrid cable of the present invention.

In the figure: 1-conductor, 2-insulation layer, 3-twisted wire, 4-skeleton, 5-cable core, 6-tight-buffered optical fiber, 7-expanded sleeve, 8-tape, 9. bracket.

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is described further. Referring to Fig. 1 , the skeletal high-frequency digital-optical hybrid cable includes a pair of twisted wires 3 and a skeleton 4. The pair of twisted wires 3 is composed of a conductor 1 and an insulating layer 2 wrapped outside the conductor 1. The cross section of the skeleton 4 It is a cross-shaped frame body and twisted wires 3 are fixed between the frames. The top of the frame body is provided with a "Y"-shaped opening bracket 9, and a tight-sleeved optical fiber 6 is fixed in the bracket 9, and constitutes a cable core 5; the cable core 5 A wrapping tape 8 is wrapped outside, and a sheath 7 is wrapped outside the wrapping strap 8 .

Embodiment: The skeleton type high-frequency digital photoelectric hybrid cable structure of the utility model includes a sheath 7, a tight sleeve optical fiber 6, a cable core 5 and a skeleton 4, and the cable core 5 is twisted by twisted pairs 3 with different twisting pitches Each pair of twisted wires 3 has two core wires, and each core wire is composed of a conductor 1 and an insulating layer 2 wrapped outside the conductor 1. The conductor 1 of the twisted pair 3-core wire is made of oxygen-free copper rod material, and the insulating layer 2 is made of high-density polyethylene material. The cable core 5 can be wrapped vertically or wrapped with a layer of tape 8, and the sheath 7 is made of halogen-free flame-retardant polyolefin material.

The twisted pitches of the twisted pairs 3 should be different, and the purpose of changing the electromagnetic field distribution and improving the performance of crosstalk attenuation can be achieved through proper pitch configuration.

The utility model adopts a new skeleton 4 structure, so that it can also place a tight sleeve coated optical fiber while placing the digital twisted pair 3, and produce a compact skeleton-type high-frequency digital photoelectric hybrid cable, which can be widely used in some smart homes Or the cable layout of intelligent buildings. The skeleton structure of the present utility model is "cross opening type", and the digital pair twisted wire 3 is placed in the cross, and the specification of the digital pair twisted wire 3 is determined according to the transmission requirements. Place the tight-buffered optical fiber 6, generally 1-2 cores. The cable core 5 can be wrapped vertically or around with a layer of polyester film tape or shielding tape as required, and the cable core 5 is sheathed with a halogen-free flame-retardant polyolefin material.

The utility model adopts a special mold to extrude the opening-type cross frame 4 at one time, the number of openings can be designed as 1~4 according to the needs, the frame 4 is placed in the center of the cable core 5, and four pairs of digital signal twisted wires are placed in the frame 4 3. 1~2 core tight-buffered optical fibers 6 are placed in the extension opening bracket 9 of the skeleton 4. During the cable forming process, a layer of polyester film tape or shielding tape can be wrapped longitudinally or around according to the needs. The skeleton 4, digital pair wire 3 and tight The optical fiber 6 is assembled together into a cable, and the cable core 5 is sheathed with a halogen-free flame-retardant polyolefin material. Each pair of digital signal twisted wires 3 has two core wires, and the two core wires are twisted with carefully designed different twisted pair pitches. The insulating layer 2 is composed of materials. In this way, the cable structure is compact and stable, the return loss of the digital communication cable is small, the transmission rate is high, and the tight-buffered optical fiber is well protected in the cable core.

Claims (1)

1. skeleton high-frequency digital optical electrical hybrid cable, including twisted pair wire and skeleton, the twisted pair wire is led by conductor and being wrapped in External insulating barrier is formed, it is characterised in that the section of the skeleton is in that twisted pair wire, frame are fixed between cross support body and support body The top of body is provided with Y-shaped open stand, tight tube fiber is fixed with support, and form cable core；Cable core is wrapped with Band, band are wrapped with sheath.