CN201434922Y

CN201434922Y - Easy stripping short-distance self-supporting miniature optical cable from optical fiber to outdoor space

Info

Publication number: CN201434922Y
Application number: CN2009200321844U
Authority: CN
Inventors: 何会侠
Original assignee: Shianfu Optical Fiber & Cable Co Ltd
Current assignee: Furukawa Electric Xian Optical Communication Co Ltd
Priority date: 2009-03-13
Filing date: 2009-03-13
Publication date: 2010-03-31
Anticipated expiration: 2019-03-13

Abstract

The utility model provides an easy stripping short-distance self-supporting miniature optical cable from the optical fiber to the outdoor space. The optical cable is composed of an optical fiber unit,a suspension wire parallel with the optical fiber unit, and a fastening jacket provided outside the cable core and the suspension wire. The optical fiber unit is composed of two or more optical fiberor optical fiber belts. The cross section of the fastening jacket at the cable core part is of a long circular shape or a rectangular shape. The outer end face at two sides of a long shaft of cross section of the fastening jacket of the cable core part is provided with grooves which respectively have a V-shaped cross section. The axes of two V-shaped grooves are staggered from each other and arerespectively provided at two sides of the short shaft of the cross section of fastening jacket of cable core. As the axes of two V-shaped grooves are not in one axis, and furthermore the groove tip parts of two V-shaped grooves are respectively aligned to the central axes of the row-head optical fiber and the row-tail optical fiber in a plurality of optical fibers so that all optical fiber units can be exposed in one time when the jacket is torn along the two V-shaped grooves. The quick stripping is obtained and the laying time is reduced. The damage which is likely to the surface of the optical fiber when the optical fibers are stripped from the jacket is prevented.

Description

The small-sized optical cable of outdoor short distance self-bearing type of peeling off easily that Fiber to the home

Technical field

The utility model relates to a kind of Fiber to the home small-sized optical cable of outdoor short distance self-bearing type, the small-sized optical cable of outdoor short distance self-bearing type of peeling off easily particularly that Fiber to the home.This optical cable mainly is used in by the fiber cable branch point to the segment distance the user access point, and effect is that a part of optical fiber in the backbone optical cable is incorporated into user access point.

Background technology

In recent years, along with fiber-to-the-home fast development, the use amount of Fiber to the home the small-sized optical cable of outdoor short distance self-bearing type also increased sharply.In order in laying, to carry out optical fiber ablation fast, reduce and lay the time, the applicant in first to file name be called the patent ZL200620078596.8 of " tight tube fiber house lead in optical cable ", one of them technical characterstic of this patent is on the outer face, both sides of the close-fitting sheath major cross-sectional axis of optical cable vee-cut to be set, and these two vee-cuts serve as axle and rotational symmetry is arranged with close-fitting sheath major cross-sectional axis.Like this, the axis of two vee-cuts is on same axle, and position, groove tip is facing to the axis of tight tube fiber.When vee-cut is torn close-fitting sheath, tight tube fiber is easy to expose, and reaches the effect of easily peeling off.In this technical characterstic has been applied to that Fiber to the home the small-sized optical cable of outdoor short distance self-bearing type.But it is single optical cable that this structure only is suitable for fiber unit, if fiber unit is two or many; in the process of peeling off, individual fibers occurs and also be clipped in situation in the sheath through regular meeting; be difficult for to take out, as shown in Figure 3, thereby increased the difficulty of peeling off and lay the time.

The utility model content

The purpose of this utility model is at the problem that exists in the prior art, and a kind of improved small-sized optical cable of outdoor short distance self-bearing type of peeling off easily that Fiber to the home is provided, and makes the optical cable of two cores or multicore also be easy to peel off, and reduces and lays the time.

For achieving the above object, solution of the present utility model is as follows:

It is by fiber unit and the messenger wire parallel with fiber unit and be located at this fiber unit and close-fitting sheath that messenger wire is outer constitutes, described fiber unit is made up of two or multifiber or fibre ribbon, the cross section of the close-fitting sheath in described fiber unit position is Long Circle or rectangle, the cross section of the close-fitting sheath at described messenger wire position is circular, one end of the major cross-sectional axis of the close-fitting sheath in described fiber unit position links into an integrated entity by connecting band and the close-fitting sheath of messenger wire, be provided with the V-shaped groove in cross section on the outer face of the close-fitting sheath major cross-sectional axis both sides of fiber unit, its special character is: the axis of described two vee-cuts is interlaced and lay respectively at the both sides of the close-fitting sheath of fiber unit cross section minor axis.

The further improvement project of the utility model is as follows:

The described fiber unit of being made up of two or multifiber becomes a row or multi-row along the close-fitting sheath major cross-sectional axis of fiber unit axial array, described fibre ribbon major cross-sectional axis and close-fitting sheath major cross-sectional axis arranged in co-axial alignment or parallel arranged, the position, groove tip of described two vee-cuts face toward two or the axis of multifiber or fibre ribbon file leader and last person's optical fiber of axial array respectively.

By technique scheme as can be seen, the axis of two vee-cuts of the utility model is not on same axle, but alternative arrangement, and the position, groove tip of two vee-cuts is respectively facing to optical fiber row or the file leader of fibre ribbon and the axis of last person's optical fiber, make the close-fitting sheath of fiber unit when two vee-cuts are torn, all cable core can both once come out, thereby reaches the effect of peeling off rapidly, reducing the fiber cable laying time.Both saved the time like this, the scratch that may cause optical fiber surface when avoiding again from sheath, peeling off optical fiber once more.

Description of drawings

The schematic cross-section of Fig. 1, two core fibre optical cables.

The schematic cross-section of Fig. 2, multi-core fiber optical cable.

Fig. 3, two core fibre optical cables are peeled off the schematic cross-section of state.

Embodiment

Embodiment 1

Referring to Fig. 1, the small-sized optical cable of described self-bearing type is made of with messenger wire 8 parallel with fiber unit and their close-fitting sheath fiber unit 1, this routine fiber unit 1 is made up of two optical fiber, the cross section of the close-fitting sheath 2 in described fiber unit position is Long Circle or rectangle, the cross section of the close-fitting sheath 11 at described messenger wire 8 positions is circular, one end of the major cross-sectional axis 3 of the close-fitting sheath 2 in described fiber unit position links into an integrated entity by the close-fitting sheath 11 of connecting band 9 and messenger wire, on the outer face 2 ' of close-fitting sheath major cross-sectional axis 3 both sides of fiber unit, be provided with the V-shaped groove in cross section 4, the axis 5 of described two vee-cuts is interlaced and lay respectively at the both sides of the close-fitting sheath of fiber unit cross section minor axis 6, the position, groove tip of one of them vee-cut is facing to the axis of an optical fiber, and the position, groove tip of another vee-cut is facing to the axis of another optical fiber.Like this, when tearing close-fitting sheath 2 along these two vee-cuts, two optical fiber all are not easy to be mailed, and play the effect that is easy to peel off.In order to make optical cable possess tensile property, in the close-fitting sheath 2 of fiber unit, be provided with two reinforcements 7, they are axle and rotational symmetry is arranged in the both sides of fiber unit 1 with close-fitting sheath minor axis 6.

Embodiment 2

Referring to Fig. 2, in like manner, if fiber unit is made up of multifiber 10, multifiber can be become a row or multi-row along close-fitting sheath major cross-sectional axis 3 axial array, and the groove point of described two vee-cuts 4 facing to two or the axis of multifiber or fibre ribbon file leader and last person's optical fiber of axial array, reaches the effect that is easy to peel off respectively.If fiber unit is a fibre ribbon, can be with the major cross-sectional axis and the coaxial or parallel arranged of the close-fitting sheath major cross-sectional axis of fiber unit of a fibre ribbon or a plurality of fibre ribbons, and the position, groove tip of two vee-cuts faces toward the termination of fibre ribbon and the axis of end optical fiber pigtail respectively, thereby reaches the effect that is easy to peel off.

Claims

1, a kind of small-sized optical cable of outdoor short distance self-bearing type of peeling off easily that Fiber to the home, it is by fiber unit (1) and the messenger wire (8) parallel with fiber unit and be located at this fiber unit and close-fitting sheath that messenger wire is outer constitutes, described fiber unit is made up of two or multifiber or fibre ribbon, the cross section of the close-fitting sheath in described fiber unit position (2) is Long Circle or rectangle, the cross section of the close-fitting sheath (11) at described messenger wire (8) position is circular, one end of the major cross-sectional axis of the close-fitting sheath in described fiber unit position (2) links into an integrated entity by connecting band (9) and the close-fitting sheath of messenger wire (11), be provided with the V-shaped groove in cross section (4) on the outer face (2 ') of close-fitting sheath major cross-sectional axis (3) both sides of fiber unit, it is characterized in that: the axis of described two vee-cuts (5) is interlaced and lay respectively at the both sides of the close-fitting sheath cross section minor axis of cable core (6).