Patent ID: 6739222
Filing Date: 2004-05-25
Classification: B25B

Abstract:
Ratchet socket for fitting into a screwed member, the ratchet socket being drivable by a tool to wrench the screwed member, the ratchet socket comprising:a cylindrical main body; and at least one ratchet mechanism disposed in the main body, the main body being formed with a circular hole and a through hole in which the ratchet mechanism is disposed, the circular hole being formed in the main body, the through hole being formed on the main body corresponding to the circular hole, an outer end of the through hole communicating with outer circumference of the main body, an inner end of the through hole communicating with the circular hole, one side of the through hole being a straight abutting face, the other side of the through hole being a slope face, a gap between the slope face and the abutting face being inward tapered; said ratchet mechanism including: a ratchet wheel rotatably disposed in the circular hole, an outer circumference of the ratchet wheel being formed with continuous teeth; a dog member movably accommodated in the through hole, an inner end of the dog member facing the ratchet wheel and being formed with multiple teeth for engaging With the teeth of the ratchet wheel; and a resilient hoop fitted around outer circumference of the main body to exert a resilient force onto the outer side of the dog member, keeping the dog member resiliently engaged with the ratchet wheel, when the dog member is driven by the ratchet wheel to abut against the abutting face, the dog member is kept engaged with the ratchet wheel, while when the dog member is forced to lean against the slope face, the dog member is moved outward along the slope face to disengage from the ratchet wheel, whereby the ratchet mechanism provides a one-way driving effect.