Cold joint terminal for optical fibers

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.