Drum membrane type optical fiber splicer capable of being repeatedly opened to be used

Abstract

A tympanum-type optical fiber splice that can be repeatedly opened and used, comprising a ferrule assembly (14), a box assembly (15), a case assembly (16), a spring (10), and an open cover (13). The ferrule assembly (14) and the box assembly (15) are encapsulated in the case assembly (16). The spring (10) is disposed between the box assembly (15) and the case assembly (16). The box assembly (15) comprises a box (2), a box lid (3), a wire guiding piece (8), and a wire guiding body (9). The box (2) comprises a box body. A tympanum chamber (2-1) is disposed on the box body. The two ends of the tympanum chamber (2-1) are in communication with a ferrule (6) and the wire guiding piece (8). Disposed on the side of the tympanum chamber (2-1) is a tympanum (2-2), the cross-section area of the tympanum chamber (2-1) shrinking under pressure. The circumference of the tympanum (2-2) is connected to the box body by means of floating ribs (2-3). A v-shaped groove (4) is disposed inside of the tympanum chamber (2-1). The box lid (3) operates on the tympanum (2-2) by means of a fastening element. The optical fiber splice evenly distributes the fastening force on connected optical fibers, and does not cause twisting or dislocation of optical fiber connections; additionally, the use of a seal structure at the connection point ensures the cleanness of the connection point and prevents pollution and erosion.

Description

technical field [0001] The invention relates to a connection device for optical fiber installation, which seals the V-shaped groove part of the ferrule assembly in the tympanic cavity, drives the tympanic membrane with a spring clamp to compress the optical fiber, and can be opened and used repeatedly. Fiber splices with pre-preset or non-preset fiber splicing methods. Background technique [0002] At present, there are mainly three ways to fix the optical fiber in the quick connection device products for re-openable use. [0003] The first is to align and fix the two optical fiber ends by pressing the folded metal sheet to realize the butt end of the optical fiber; the second is to realize the butt end of the optical fiber by pressing and fixing the plastic block to fix the optical fiber; the third is to achieve the end of the optical fiber by The box-built gland presses the floating block to compress the V-shaped block to fix the optical fiber to realize the butt-end of t...

AI Technical Summary

Problems solved by technology

[0004] In the fixing of optical fiber, in the first optical fiber fixing method, when the metal sheet is aligned with the metal sheet in the fixing mechanism, a return groove must be set on the opposite side of the V-shaped groove to prevent the optical fiber from being pressed off. The gap between the optical fiber is controlled by the folded metal sheet. The space in the cavity guarantees the opening, that is, the V-groove gap (fiber threading gap), which brings great manufacturing difficulty and low yield; in the second optical fiber fixing method, the plastic V-shaped block alignment mechanism is in the lock When tightening the optical fiber, the gland rotates to compress the optical fiber in the V-shaped groove. Due to the impact of the gap drift of the gland through the rotation and compression method, the direction of the optical fiber is often not perpendicular to the V-shaped groove, and the error of the alignment accuracy of the optical fiber This will increase the connection loss of the two connected optical fibers; when the optical fiber channel of the plastic V-shaped block alignment mechanism is used repeatedly, a special key needs to be used to push the pressure block away. Difficulty, low yield, and the plastic debris generated by friction during the push-off process pollutes the splicing point, which affects light transmission during repeated use, resulting in a decline in splicing quality; the initial state of some plastic V-shaped block alignment mechanisms is free, and the optical fiber When threading, it is necessary to open the V-shaped block channel, and the matching liquid is adsorbed in it. When the optical fiber penetrates into the top-opened V-shaped groove, the fiber threading resistance increases, and the probability of false docking in the project increases. In addition, the sharp fiber cutting end face is very difficult. It is easy to scratch the V-shaped block, causing debris to pollute the splicing point, resulting in splicing failure; in the third optical fiber fixing method, because the floating block is designed as a threshold, when it is pressed down by the cover, the floating block is affected by plastic deformation. While rotating the crimped fiber, rub it downwards to make the optical fiber in the V-groove vibrate. The force direction of the fiber is not perpendicular to the V-groove, which will lead to poor alignment accuracy of the spliced ​​fiber and increased splicing loss. Due to alignment Accuracy is affected by materials and interference accuracy, and the dispersion of alignment accuracy is large, resulting in poor repeatability of optical fiber splicing

[0005] The common disadvantage of the first two optical fiber fixing methods is that the V-shaped groove cannot be sealed, and there is no matching night storage chamber, which causes the matching liquid used in the V-shaped groove to be easily polluted and lost, directly affecting the life of the connection. Although it can have a certain sealing effect in the working state, it cannot be sealed before use, and the opened gland is easy to slip during repeated use, and it is easy to be polluted by the environment during repeated use.

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