Optical cable joint box

Abstract

The invention relates to a joint box, and aims at providing an optical cable joint box with excellent sealing property, long service life and capability of guaranteeing the communication quality of an optical fiber line. The optical cable joint box comprises an upper shell and a lower shell; an upper sealing baffle plate is arranged at a back side in an upper cavity; the upper sealing baffle plate is downwards inserted into a lower cavity; the back surface of the part of the upper sealing baffle plate inserted into the lower cavity is hermetically attached with the inner surface of the lower cavity; a lower sealing convex edge is arranged on the upper end surface of a low side plate and at the back side of a back sealing adhesive tape; the lower sealing convex edge is upwards embedded andinserted into an upper sealing concave groove positioned on the lower end surface of an upper side plate; a front side in the lower cavity is provided with a lower sealing baffle plate; the lower sealing baffle plate is upwards inserted into the upper cavity; the front surface of the part of the lower sealing baffle plate inserted into the upper cavity is hermetically attached with the inner surface of the upper cavity; an upper sealing convex edge is arranged on the lower end surface of the upper side plate and at the front side of a front sealing adhesive tape; and the upper sealing convex edge is downwards embedded and inserted into a lower sealing concave groove positioned on the upper end surface of the lower side plate.

Description

technical field [0001] The invention relates to the technical field of optical cable lines, in particular to an optical cable joint box. Background technique [0002] The existing optical cable splice box is mainly sealed by setting a sealing strip between the upper and lower shells. The sealing performance of this design is no problem at room temperature, but as the temperature changes in seasons, the air pressure in the optical cable splice box will also change. With the high and low changes, the internal air pressure also increases when the temperature is high in summer, and the sealing strip becomes soft at high temperature, which often leads to the phenomenon that the sealing strip is broken by the high pressure inside the box body, causing water leakage, and the optical cable joint box loses its sealing performance. In turn, it will affect the communication quality of the entire optical cable line, so that maintenance and replacement of the optical cable splice box are...

AI Technical Summary

Problems solved by technology

[0002] The existing optical cable joint box is mainly sealed by setting a sealing strip between the upper and lower housings. The sealing performance of this design is no problem at room temperature, but as the temperature changes in seasons, the air pressure in the optical cable joint box will also change. With the high and low changes, the internal air pressure also increases when the temperature is high in summer. In addition, the sealing strip becomes soft at high temperature, which often leads to the phenomenon that the sealing strip is broken by the high pressure inside the box body, causing water leakage, and the optical cable joint box loses its sealing performance. In turn, it will affect the communication quality of the entire optical cable line, so that it is necessary to repair and replace the optical cable splice box

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