Patent ID: 8523456
Filing Date: 2013-09-03
Classification: G02B

Abstract:
1. A cold joint terminal for optical fiber comprises a box-shaped casing ( 1 ), a fixing device for fixing an optical fiber scarfskin after the optical fiber is inserted in place, and a compressing device for compressing laminate end faces of the optical fiber into a V-groove; wherein the box-shaped casing ( 1 ) has connection chambers ( 1 - 6 ) arranged on two sides of the box-shaped casing ( 1 ), and the center of the box-shaped casing ( 1 ) is arranged with a floating block ( 1 - 2 ) having a caulking groove ( 1 - 1 ) and a building slot ( 1 - 5 ) on each side respectively; and wherein the fixing device includes two caudal peduncles ( 4 ), two ejector sleeves ( 5 ), and two guide blocks ( 7 ), each of the guide blocks ( 7 ) is arranged in the box-shaped casing ( 1 ) and the ejector sleeve ( 5 ) is arranged outside the box-shaped casing ( 1 ), one side of the caudal peduncle ( 4 ) is arranged in the box-shaped casing ( 1 ) and the other side of the caudal peduncle ( 4 ) is arranged outside the box-shaped casing ( 1 ), each of the guide blocks ( 7 ) is equipped with a small positioning taper hole ( 7 - 1 ) and an optical fiber hole ( 7 - 2 ), the one side of the caudal peduncle ( 4 ) arranged in the box-shaped case ( 1 ) is pushed into the connection chambers ( 1 - 6 ) on the two sides of the box-shaped casing ( 1 ), each of the guide blocks ( 7 ) is pushed into a container ( 4 - 2 ) in the caudal peduncle ( 4 ), the caudal peduncle ( 4 ) is arranged with a big positioning taper hole ( 4 - 3 ) and a compressing chamber ( 4 - 7 ) inside, the big positioning taper hole ( 4 - 3 ) is of a conical surface, the caudal peduncle ( 4 ) is equipped with at least one hanging block ( 4 - 4 ) which is connected with the caudal peduncle ( 4 ) by both a bar to be broken ( 4 - 8 ) and a connecting bar ( 4 - 9 ), the ejector sleeve ( 5 ) is attached to the other side of the caudal peduncle ( 4 ) and can push down the hanging block ( 4 - 4 ) to compress the optical fiber scarfskin and clamp the optical fiber by rupturing a front end of a tendon to be broken ( 4 - 8 ), making the space in the caudal peduncle becomes smaller, and thus the optical fiber scarfskin threading the space is fixed; and wherein the compressing device includes a V-groove metal block ( 2 ) and a building cover ( 3 ), the V-groove metal block is embedded in the caulking groove ( 1 - 1 ) of the box-shaped casing ( 1 ), the optical fiber hole ( 2 - 3 ) is formed between the V-groove ( 2 - 1 ) and the floating block ( 1 - 2 ), one side of the building cover ( 3 ) is pushed into the caulking groove ( 1 - 5 ) in the box-shaped casing ( 1 ), the floating block ( 1 - 2 ) is pressed to compress a connector of the optical fiber in V-groove metal block ( 2 ) in the caulking groove ( 1 - 1 ), the other side of the building cover ( 3 ) is arranged outside the box-shaped casing ( 1 ), the floating block ( 1 - 2 ) and the box-shaped casing ( 1 ) are connected by a floating bar ( 1 - 4 ), the floating block ( 1 - 2 ) is also arranged with a guide slope ( 1 - 3 ), the body ( 3 - 1 ) of the building cover is arranged with a chamfer angle ( 3 - 3 ) matching with the guide slope ( 1 - 3 ), the building cover ( 3 ) pushes the floating block ( 1 - 2 ) through the guide slope ( 1 - 3 ), thus pressing the two butted optical fibers tightly, and the optical fiber holes ( 7 - 2 ) of the guide blocks ( 7 ) in the containers ( 4 - 2 ) of the two caudal peduncles ( 4 ) and the compression chambers ( 4 - 7 ) of the caudal peduncles ( 4 ) are on the same axis.