| 摘要 |
<p>A tool driver includes a main body (1) provided with an upper cover (11) having its lower side secured with a sleeve chamber (10) for mounting and positioning a sleeve (2) therein. The sleeve (2) has its inner wall disposed with a plurality of recesses (23) for receiving an upper ratchet wheel (4), which is engaged with a lower ratchet wheel (5) and has an upper side set thereon with a compression spring (6). Thus, a user can turn an adjusting member (7) with fingers, and it is unnecessary to use other tools to accurately adjust the combined state between the adjusting member (7) and the sleeve (2), determining the pressure that the compression spring (6) presses on both the upper ratchet wheel (4) and the lower ratchet wheel (5). Also be able to adjust and restrict the locking torque of the locking stem (3) of the tool driver. When the torque has exceeded the value present, the tool drivers main body and sleeve can rotate continuously whilst the locking stem does not.</p> |
