CN2394238Y

CN2394238Y - Waterproof optical cable connection box

Info

Publication number: CN2394238Y
Application number: CN 99219834
Authority: CN
Inventors: 蔡冰; 李绍春
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-02-13
Filing date: 1999-02-13
Publication date: 2000-08-30
Anticipated expiration: 2009-02-13

Abstract

The utility model relates to a waterproof optical cable connection box. The purpose of the waterproof optical cable connection box is to solve the problem that water enters an optical cable connection box in an optical cable communication line. In the maintenance of optical cables, the problem that water enters connection boxes is more. As time lapse, the transmission quality of the optical cables can be strongly influenced, and even the safe smooth running of the optical cables is endangered. Thus, huge economic loss is brought. By changing an engaging mode of the upper and the lower parts of a box body, the utility model enables a seal at an optical cable inlet position of the optical cable connection box and a seal of the upper and the lower parts of the box body to mutually stand alone and not mutually influence. By a rotating and pressurizing method, large pressure is applied to sealing gum at the optical cable inlet position of the optical cable connection box. Thus, the sealing gum can fully contact to the optical cables and the box body to obtain a waterproof purpose. The utility model can be used for different communication engineering which needs the optical cables to transmit information.

Description

The waterproof cable connector box

What the utility model solved is the problem of cable splice closure water inlet in the telecommunication cable circuit.

In the maintenance of optical cable, the connector box poor sealing can cause the connector box water inlet.As time goes on, the hydrone that enters wherein will seriously reduce the transmission quality of optical cable, even jeopardizes the unimpeded of optical cable, causes Communication Block.Because in the problem that designs with connector box, this phenomenon all exists in various direct-burrieds, aerial optical cable engineering, is the unimpeded major hidden danger of optical cable long-term safety.

The problem of water inlet at the cable splice closure ubiquity of usefulness, causing into, the main cause of water has following several aspect: at first, with connector box by about two symmetries and similar part constitute.The approach of connector box water inlet has two places, a place be connector box enter the cable hole, another place is a two-part contact end face up and down.The former sealing is to solve by twining sealant tape at the optical cable crust, and the sealing of end face then is to seal by the rubber bar.But in the cable hole of advancing with connector box is that the semicircle orifice of two box bodys constitutes by belonging to up and down respectively, so cause the into sealing at cable place and the sealing of box body end face to influence each other, condition each other.When the engineering staff uses the rubber belt sealing two ends that are wrapped in outside the optical cable to enter the cable hole, need the quantity of strict seal adhesive tape.When quantity is very few, enters the cable hole and will produce the slit, cause into water.And twine glue when too much, will make the connector box two ends uprise, moisture can see through again the rubber bar from connector box up and down two-part connection end face enter.In addition, the fluid sealant of and other end more when fluid sealant can make the two ends height of connector box inconsistent more after a little while, also makes upper and lower box body contact end face the slit occur, causes into water.

The purpose of this utility model provides a kind of connector box, and it can not only finish the effect of the protection fiber cable joint that the ordinary optical cable connector box played, and can effectively prevent with cable splice closure the problem of ubiquitous water inlet.

The purpose of this utility model is achieved in that at first, changes the methods of anastomosis of box body top and the bottom, make sealing that connector box enters the optical cable place and box body about two-part sealing separate, be independent of each other.See figure one.So just avoided the cable splice closure two ends because of adding glue too much or add the very few trouble of bringing of glue.And then improve the water resistance of box body upper and lower end face contact portion greatly.Secondly, set up an annular seal space, squeeze into fluid sealant in the annular seal space, make it be subjected to very big pressure, can fully contact, improved sealing property with optical cable and box body by rotary part.See figure two.

By adopting the water joint box, can improve the water resistance of cable splice closure greatly, prolong the serviceable life of connector box, improve communication quality.And will significantly reduce because of have to number of times that optical cable is carried out large repairs and transforms of connector box water inlet, be that country saves extensive fund.Simultaneously, because the speech channel enormous amount that lightguide cable link transmits in case because of water inlet causes the optical cable blocking-up, will bring enormous economic loss, behind the employing waterproof cable connector box, can reach the unimpeded purpose of guarantee communications optical cable.

Below in conjunction with accompanying drawing the utility model is further specified:

Fig. 1 is that the left side of waterproof cable connector box is looked and partial sectional view.

Fig. 2 is that its left-half is overlooked and partial sectional view.

Fig. 3 is that its left-half master looks and partial sectional view.

Among the figure 1, box body 2, advance cable place pad 3, advance that cable adds glue place 4, rubber packing bar 5, holding screw hole 6, enters cable hole 7, parts 8 are compressed in rotation, top and the bottom contact end face

This connector box main body is a rectangular parallelepiped.It is parts independently that parts (7) are compressed in pad (2), rotation, does not belong to the main body of connector box.It is cavity that parts (7) center is compressed in rotation, and optical cable is by wherein penetrating.There is screw thread the outside, can screw in box body.Outside one end is the hexagonal nut shape simultaneously, with the convenient box body that is screwed into by screw thread.

As Fig. 1: the connector box both sides are fastening by screw (5).What a circle was respectively arranged in the box body rear and front end enters cable hole (6), and fiber cable joint passes this hole and enters in the connector box.More than the contact end face (8) is the lid of connector box, and it is the main path that causes the optical cable water inlet that its end face of contact up and down (8) and optical cable enter cable hole (6).Thus figure as can be seen, the end face of this connector box (8) is in the top of entering cable hole (6), enter the cable hole and be one independently, complete circular hole, the two is independent of each other.Be divided into two by end face and enter the cable hole, belong to two parts up and down of box body respectively,, tend to attend to one thing and lose sight of another, cause poor sealing so when sealing, influence each other at the connector box of usefulness.

As Fig. 2, Fig. 3, advance cable place pad (2) and be one certain thickness annular gasket is arranged that what show among the figure is its longitudinal diagram.Its external diameter is certain, and internal diameter can directly be changed according to the cable of optical cable, to reduce the slit between itself and the optical cable.At first outside connector box, optical cable is passed rotation successively during operation and compress into parts (7) and two pads, earlier optical cable head and a pad are penetrated box body then, adding Jiao Chu (3) filling certain fluid sealant around optical cable this moment, the first from left piece pad among the figure is also put into into cable hole, like this, just formed an annular seal space between two pads, fluid sealant is positioned at two annular seal spaces between pad simultaneously, is looped around around the optical cable.Then rotation is compressed into parts (7) and be screwed into box body along screw thread, the pad by the extruding outside makes in the annular seal space of fluid sealant between two pads and bears very big pressure, fills up the slit of annular seal space, and then reaches the into purpose of place, cable hole waterproof.And after the end adopts the rubber packing bar (4) of certain cross sectional shape,, just can guarantee the sealing effectiveness of top and the bottom contact end face by the pressure that the holding screw (5) around the box body is produced.

Claims

1, a kind of waterproof cable connector box, purpose are the problems that solves cable splice closure water inlet in the optical cable communication line.It is characterized in that: two-part end face was not in one plane about connector box advanced cable hole and box body; The mode of annular seal space is adopted in the sealing of entering the cable hole, makes fluid sealant performance maximum effect.

2, waterproof cable connector box according to claim 1 is characterized in that: it is an independent circular hole that belongs to box body the latter half that connector box enters the cable hole, and connector box advances the sealing at optical cable place and box body, and two-part sealing is separate up and down, is independent of each other.

3, waterproof cable connector box according to claim 1, it is characterized in that: the sealing of optical cable being entered the cable place, be between two pads, to form an independently annular seal space, give fluid sealant in the annular seal space with very big pressure by rotary part, make it fill up optical cable in the annular seal space and enter all slits between the cable hole, reach the purpose of waterproof.