Patent ID: 9533401
Date: 2017-01-03
CPC Classifications: B25B

Claim:
1. A ratchet driving mechanism for a hand tool, including: a drive unit, including a drive shaft, a position member and two latch members, wherein the position member and each of the two latch members being installed on the drive shaft, and each of the two latch members including a latch plate and an elastic piece provided between the drive shaft and the latch plate, wherein each of the latch plates is protruded with an abutting block; an adjustment ring, sleeved on the drive shaft corresponding to the position member and a portion of each of the two latch members, and formed with three cavities allowing the position member to be selectively latched and positioned and a single accommodation slot allowing each of the latch plates to inwardly/outwardly move; a ratchet unit, sleeved on the drive shaft corresponding to another part of each of the two latch members, and formed with a plurality of ratchet teeth allowing each of the latch plates to be engaged, wherein the abutting blocks are both accommodated into the single accommodation slot when the position member is positioned in a middle cavity of the three cavities, and wherein one of the abutting blocks leaves the single accommodation slot from a left side thereof or the other one of the abutting blocks leaves the single accommodation slot from a right side thereof when the position member is positioned in a right or a left cavity which are adjacent to the middle cavity.