Patent ID: 7334504

Claim:
A torsional force structure of a ratchet device comprising: a body having a head portion at the end of said body, said body having a space which is composed of a first recess and a second recess, said space being constituted by a first circle and a second circle, a horizontal center line of said first circle having a distance from a horizontal center line of said second circle, said first circle intersecting said second circle at two points which are located between said horizontal center lines of said first and said second circles, both sides of said first and second circles being connected by a tangent which forms an acute angular region between an inner wall of said space and a socket member; a socket member fitted in said first recess and having a plurality of teeth; a ratchet member fitted in said second recess, said ratchet member being a crescent block having an outer side and an inner side, said outer side of said ratchet member having a plurality of cavities for positioning of a triggering rod, said inner side of said ratchet member having a plurality of teeth engageable with said teeth of said socket member, said ratchet member being provided at two ends thereof with two wedge portions configured to be fitted in said angular region between said inner wall of said space and said socket member; an elastic urging means mounted in said space pushing said ratchet member against said socket member thereby engaging said ratchet member with said socket member; said triggering rod being engaged with a top face of said ratchet member for moving said ratchet member; whereby when said triggering rod is first adjusted to move said ratchet member to make one of said wedge portions of said ratchet member fit in said angular region and the said socket member is rotated, said wedge portion of said ratchet member will be forced to be lightly fitted in said angular region thereby enabling said socket member to provide a positive rotating force.