CN2056256U

CN2056256U - Water-stopping plug of mouth of built-in fiber cable plastic tube

Info

Publication number: CN2056256U
Application number: CN 89208402
Authority: CN
Inventors: 陈中
Original assignee: Jiemen Industry Co ltd
Current assignee: Jiemen Industry Co ltd
Priority date: 1989-06-10
Filing date: 1989-06-10
Publication date: 1990-04-18

Abstract

The utility model relates to a water-stopping plug of the mouth of a built-in fiber optics cable tube, which is combined into a whole with a draw rod with screw teeth, an elastic ring, a fixing shim, screw caps, etc. The water-stopping plug is used for plastic pipe mouths penetrated with fiber optics cables to plug the interspace of the mouth and prevent sewerage and mud immersing the plastic tube and is used for fixing the fiber optics cables to not slide. The fiber optics cables wrapped on a center is fastened on a screw rod through the screw caps. When the screw cap is screwed, the elastic ring is pressed to be inflated. The assembly and disassembly of the utility model can complete through holding by hand without a tool. When one fiber optics cable is pulled out of the mouth of the plastic tube and is connected with the other fiber optics cable to be one line, the water-stopping plug is peeled for coating the fiber optics cables and is pushed in the mouth of the plastic tube for direct use without shearing the fiber optics cables.

Description

Water-stopping plug of mouth of built-in fiber cable plastic tube

But the utility model relates to the mouth of pipe filler block of a kind of Fast Installation in fiber optic cables, and particularly a kind of reaching prevents that sewage and silt from invading in the plastic tube and have optical fiber cable concurrently, makes the mouth of pipe filler block of its unlikely slip in plastic tube.

General fiber optic cables are laid on the practice of subterranean pipe line, be with three or four more small-bore plastic tubes (being commonly called as tube-in-tube), penetrate simultaneously in the heavy-caliber plastic pipe of originally promptly having buried underground (being generally the PVC hard tube), and in each bar tube-in-tube, penetrate fiber optic cables, and make it draw the fiber optic cables that connect in another tube-in-tube, so, just can finish a complete optical fiber telephone circuit.Because there is no, the port of these tube-in-tubes installs any device that prevents sewage or silt invasion additional, the cable of inside is damaged or undesired impaired situation generation such as erosion, these problems, just at present in this area actively want the difficult problem that overcomes.

The purpose of this utility model is the mouth of pipe filler block that a kind of fiber optic cables tube-in-tube will be provided, and it can effectively reach waterproof and sand prevention mud enters tube-in-tube.

The purpose of this utility model is achieved in that each part of this filler block all is the combination of separate type, and in the middle of fiber optic cables can being coated on; Descending gradually through a screw-cap is locked on the thread pull bar element, make it to expand and be adjacent to tube wall to suppress a therebetween elastic ring, the generation that as above just can block up exhausted gap also reaches and prevents that sewage or silt from entering the interior possibility of pipe; In operation, system one of will penetrate in the pipe after the bar fiber optic cables pull out, draw with another fiber optic cables again and use when being connected into an optical fiber telephone circuit, need not cut off fiber optic cables, as long as the elastic ring in this structure of strip off is inserted in fiber optic cables, it respectively can be the screw-cap of separate type, setting-up piece and thread pull bar make up in regular turn and are inserted in, by the mode of manual rotation, will reach the also effect of packing locking that expands; The utility model is excellent be useful in penetrate big its mouth of pipe of cable (or wall scroll tube) in the pipe around the surplus space of institute less, and need to do to use when anti-sealing infiltrates in the pipe measure at the mouth of pipe.

Now after the structure function conjunction with figs. of the utility model being illustrated in, make it more clear:

Figure 1 shows that the three-dimensional exploded view of the utility model.

Section plan when Figure 2 shows that the utility model assembling.

Enforcement illustration when the reality that Figure 3 shows that the utility model is used.

See also shown in each accompanying drawing, the utility model is made of screw-cap 1, setting-up piece 2, elastic ring 3 and thread pull bar 4; Wherein, a center pit 32 is run through in elastic ring 3 central authorities, the hole 31 of four five equilibrium distances of row cloth on every side, be cut with a slot 33 and lead to center pit 32 31 of any two holes, open through the elastic ring 3 that this slot 33 just can be made this rubber, enter the position of center pit 32 so that be inserted in fiber optic cables.

With regard to thread pull bar 4, it is provided with four rectangular cylinders 43 of thread altogether, can penetrate four holes 31 of elastic ring 3 respectively and stretch out, but this thread pull bar 4 is one to be divided into two parts, each is provided with the concave point 42 and salient point 41 that can fasten according to two rectangular cylinders 43 of thread are arranged at its base plate relative position.

After thread pull bar 4 was inserted in elastic ring 3, the length of four rectangular cylinders 43 of thread was still enough passed setting-up piece 2; On setting-up piece 2, also be provided with center pit and four holes 21, also be separate type design and can the position in the upper end of elastic ring 3, its purpose be for screw-cap 1 against with indirect compacting elastic ring 2, make it reach the effect of expansion.

This screw-cap 1 has and can cooperate the internal thread of locking with thread pull bar 4,1/3 locates highly to design that eight grooves (space) are arranged above it, its effect is to be convenient to hold herein so that spin, or utilize this groove insert turnscrew with the bar rod principle reverse turn it, and this screw-cap 1 also is the structure that is separate type, is provided with wedge-shaped impression 11 and the wedge shape projection 12 that can close admittedly mutually on the face of contacting with each other.

By above-mentioned structure, can on arbitrary place fiber optic cables of being scheduled to, carry out the operation of fit very easily, utilize the characteristic of elastic ring 3, screw-cap 1 is screwed down and elastic ring 3 is outwards strutted gradually by the compacting of setting-up piece 2, up to fully with the applying of tube-in-tube wall till, just can reach waterproof, purpose in the anti-silt dipleg, and, of the present utility model simple in structure, each part is the design of separate type, increases the convenience of fit on especially.

Claims

A kind of mouth of pipe filler block of fiber optic cables tube-in-tube includes thread pull bar, elastic ring, setting-up piece, screw-cap, it is characterized in that:

The thread pull bar has four rectangular cylinders of thread, form the combination form of two parts separate type, make each part have two rectangular cylinders of thread, be the sags and crests design on the surface of contact of its composition one mutually so that align closing, and the space of center for supplying fiber optic cables to be inserted in;

Elastic ring system is shaped to the drum that has the center pit that runs through and be located on center pit four holes on every side, these four holes pass for aforesaid four rectangular cylinders of thread, and, on side, be provided with groove and communicate, this groove strip off elastic ring of mat and fiber optic cables are directly entered central hole location with center pit;

Setting-up piece is to be located at elastic ring top, the usefulness of suppressing the elastic ring expansion for the locking of screw-cap, and its body also is provided with center pit and four holes, and is combined into one for the kenel of two parts separate type;

Screw-cap also makes up for the mode of two parts separate type, on surface of contact, be provided with wedge-shaped impression and projection mutually and be combined into one overlapping, the inner lock that forms advances screw thread within the thread long column body, in then suitable being formed with several and being convenient to the groove that the application of force or turnscrew turn are used of upper end

By above-mentioned structure, the long socle body of thread of the thread bar that is combined into one is passed the hole of elastic ring, be inserted in setting-up piece again and push down elastic ring in the long socle body of thread, lock the rectangular cylinder of thread with screw-cap at last, elastic ring is suffered oppression and expand, be filled between the tube-in-tube to reach.