Patent ID: 7004459
Filing Date: 2006-02-28
Classification: B25B

Abstract:
1. A clamping device comprising a first clamping arm and a second clamping arm mounted for opening and closing to a body, an arm driving portion for displacing the first clamping arm to a clamping position and a non-clamping position, and a clamping force applying portion for applying a required clamping force to the clamping arm, wherein the arm driving portion includes a first driving source for displacing the first clamping arm and a power transmission mechanism for transmitting a driving force from the first driving source to a rotary shaft of the first clamping arm, wherein the clamping force applying portion includes a pressing member for applying the clamping force to the first clamping arm by applying a rotating force in a clamping direction to the rotary shaft and a second driving source for displacing the pressing member from a non-operating position to an operating position for applying the clamping force, and wherein the rotary shaft of the first clamping arm has a clamping force transmitting lever and the pressing member presses the transmitting lever to thereby apply the rotating force in the clamping direction to the rotary shaft.