Patent ID: 9574596
Date: 2017-02-21
CPC Classifications: B25B,B60B,B60C,B66F,F16B,F16L

Claim:
1. A self-locking device with continuous locking positions, comprising: a housing with an internal cavity, wherein a wall of the cavity includes a first frictional contact face and a fourth frictional contact face; a locking member with a second frictional contact face and a third frictional contact face, which is movable in the cavity, with the second and third frictional contact faces facing the first and fourth frictional contact faces, respectively; and a first lock block and a second lock block, with the first lock block being arranged between and contacting with the first and second frictional contact faces, and the second lock block being arranged between and contacting with the third and fourth frictional contact faces; wherein, the first and second lock blocks are configured to allow the locking member to be movable with respect to the housing in a first direction but locked in a second direction opposite to the first direction, so that the locking member is locked at any continuous locking position; the device further comprises: an upper clamp arm, one end of which is connected fixedly with or formed integrally with the housing; and a lower clamp arm, one end of which is movably connected with the other end of the upper clamp arm; wherein, the locking member extends through the cavity of the housing, and one end of the locking member is engaged with the other end of the lower clamp arm when the locking member is locked at the locking position, so that the upper and lower clamp arms are fastened together.