| 摘要 |
<p>A ratchet screwdriver with a handle, 1, a shaft, 2, and a ratchet switch device, 3(see figure 1). The shaft is connected to the front end of the handle and a mounting member, 10, is connected to the handle so as to be connected with the shaft. The ratchet switch device is located in the chamber, 12, in the rear end of the handle and includes a base, 30, a frame, 31, two engaging members, 32 and 33 with ratchet teeth, a positioning member, 34, a resilient plate, 35, two positioning pieces, 36, a ratchet member, 37, and a switch, 38. The shaft can be replaced by operating the mounting member on the handle. The end-mounted switch on the handle can change the direction of the ratchet member to output torque via the shaft.</p> |
