Chuck device for tool bit, has sleeve that includes chamber in which socket is inserted and groove communicated with chamber, one elastic unit compressed between socket and sleeve, and another elastic unit pushing tool bit

摘要

The device has a socket (10) defining a chamber to receive a tool bit and an aperture communicating with the chamber, and a spindle extending from the socket. A ball is received in the aperture. A sleeve (20) has a chamber in which the socket is inserted and an annular groove is communicated with the chamber. An elastic unit (24) is compressed between the socket and the sleeve and another elastic unit (30) pushes the tool bit.