| 摘要 |
<p>A 'snap-in' bit chuck assembly (10) for a rotary hand or powered tool, includes a body (20) having a hex shank (22) at its rearward end, a retraction collar (30) slidably disposed on the body (20), and an outer retaining collar (70) fixed to the forward end of the body (20). The body (20) has a coaxial hex socket (24) formed therein to allow a tool bit (14) to be inserted thereinto. A slot (50) is formed in the body (20), between the outer surface of the body (20) and the internal hex socket (24). A coil spring (40) surrounds the body (20), inside the retraction collar (30), and normally biases the retraction collar (30) forwardly and biases a retaining clip (60) toward the bottom of the angular slot (50).</p> |
