Connecting mechanism for detachably connecting two members together

摘要

A connecting mechanism has a reversely tapered fit portion (43), an elastically expandable collet chuck (44) fitted on the fit portion (43), a locking sleeve (45) surrounding the outer peripheral surface of the fit portion (43) and axially slidably mounted on the outer peripheral surface of the collet chuck (44), and a spring (46) for biasing the locking sleeve (45) in its advancing direction. The locking sleeve (45) advances with collet chuck (44) being fitted on the fit portion (43) and locks the collet chuck (44) such that the collet chuck (44) cannot be expanded in the fit portion (43). This makes small the elastically expanding force of the collet chuck which fits the fit portion (43) to the collet chuck (44) and the biasing force of the spring (46) which locks the collet chuck (44).