High-speed rotary wrench shaft center fixing device and high-speed rotary wrench using the same

摘要

A ratchet wrench includes a body having a head and a shank interconnected to the head. The head includes a driving hole extending along a first axis and receiving a driving device. The shank includes a transmission hole receiving a transmission shaft. An axis fixing device is mounted in a transmission groove between the driving hole and the transmission hole and includes an axial hole extending through the axis fixing device along a second axis that extends perpendicularly to and intersects with the first axis. A gear coupled to the driving device is received in the axial hole and is rotatable about the second axis. A driving end of the transmission shaft extends into the axial hole and is connected to the gear.