Box-building type optical fiber splicing unit capable of being repeatedly opened and used

Abstract

The invention discloses a box-building type optical fiber splicing unit capable of being repeatedly opened and used, comprising a front-mounted box assembly used for fixing an optical fiber and a rear-mounted box assembly used for fixing the optical cable coating of the optical fiber, wherein and the front-mounted box assembly and the rear-mounted box assembly are fixedly connected; the front-mounted box assembly comprises a shell, a building cover, a front-mounted box, a V-slot metal block, a lock pin and a guide block, and the building cover is arranged on the shell; the front-mounted box, the V-slot metal block, the lock pin and the guide block are arranged in the shell; the box is provided with floating ribs and building slots; the building cover comprises building arms and building bodies; the building bodies and the building slots fit; the shell is also provided with an opening cover; the opening cover and the building cover are relatively arranged; the opening cover comprises at least one top plate; and the top plate can act on the building arms of the building cover and open the building cover. The optical fiber splicing unit has simple and reliable splicing structure, short site operating time and low overall manufacture cost and greatly reduces the terminating difficulty of optical fiber splicing.

Description

technical field [0001] The invention relates to a connection device for optical fiber installation. In the connection process, the optical fiber and the outer skin are compressed by box-laying method, and can be opened and used repeatedly, in particular to the optical fiber connection with two connection modes of pre-installed optical fiber and non-pre-installed optical fiber. son. Background technique [0002] At present, the quick connection device products for re-opening use mainly adopt two ways to fix the optical fiber and the outer skin. [0003] Optical fiber fixation: one is to align and fix two optical fiber ends by pressing the folded metal sheet to realize the butt end of the optical fiber; Among them, a V-shaped groove for optical fiber butt joint is set in the folded metal sheet or the butted plastic block; a liquid substance is dripped at the connection position of the optical fiber end of the V-shaped groove to improve the light permeability of the connection...

AI Technical Summary

Problems solved by technology

[0005] In the fixing of optical fiber, the thermal expansion and contraction of the metal sheet in the fixing mechanism will increase the distance of the optical fiber connection point, and the connection performance will change with temperature changes; while the plastic block is often closed to the optical fiber channel, the optical fiber When piercing, it is first necessary to push off the pressure block, but the smoothness of the plastic surface is low, and it is easy to damage the surface of the V-shaped groove during the push-off process, resulting in plastic debris, polluting the joint point, affecting light transmission, and resulting in a decline in the quality of the joint, while the joint plastic There is a liquid substance in the middle that improves the light transmittance. Its side effect is that the two surfaces are attracted together, and the pushing force of the optical fiber is greatly increased, resulting in difficulty in the final connection.

[0006] It is time-consuming and labor-intensive to install the end of the sheath in the fixing of the sheath, and the end parts are small, difficult to manufacture, high in cost, and easy to be lost during construction; the contraction of the cone claw needs to tighten the cone sleeve, and the sheath of the optical cable is easy to tighten during the tightening process. Sliding affects the success rate and takes a long time to operate

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