| 摘要 |
<p>A hand tool for providing an optical fibre with an end face which is flat and lies in a plane radial to the fibre axis comprises four elongate members (1,2,3,4) extending side by side. The first member (1) is of tubular form and surrounds the other three members (2,3,4) and has, mounted near one of its ends, jaws of two pairs of jaws (16,17) transversely spaced on opposite sides of the longitudinal axis of the member (1) and, between the jaws (16,17), a table having a curved surface. The second member (2) is pivotally connected to the first member (1) at its end remote from the table (6) about an axis extending transversely of the members, is urged away from an internal surface of the first member (1) by a leaf spring and carries, near its other end, the other jaws of the transversely spaced pairs of jaws. The jaws of one pair of jaws (16,17) are so resiliently mounted on the first (1) and second (2) members that, when the jaws (16,17) move towards one another to grip an optical fibre between them, the parts of the jaws (16,17) in contact with the fibre will tend to move away from the table (6) and from the other pair of jaws (16,17) to exert a tensile force on the fibre. The third member (3) is pivotally connected to the first member (1) at its end remote from the table about an axis extending transversely of the members, is urged away from the first member by the leaf spring and carries near its other end an elongate cutter. The fourth member (4) is pivotally connected at one of its ends to the first member (1) and is so shaped intermediate of its ends that, when it is caused to pivot towards the third (3) and second (2) members an intermediate part bears against the third member (3) to cause the third (3) and second (2) members to pivot against the action of the leaf spring and so cause the jaws of the pairs of jaws (16,17) to grip an optical fibre positioned between them and to cause the cutting edge of the cutter to contact and move transversely across the tensioned optical fibre to score the fibre to such an extent that the fibre breaks to form end faces of the fibre that are flat and lie in planes radial to the axis of the fibre.</p> |
