Patent TW-201505774-A (TW)
Title: Ratchet wrench
Inventor: LIU CHUN-HSIUNG
IPC: B25B13/46
Filed: 2014-10-03
Abstract: A ratchet wrench is provided, including: a body, including a receiving slot and a first anti-dust portion circumferentially disposed outside the receiving slot, the first anti-dust portion including a first circumferential surface and an anti-dust wall, the first circumferential surface extending from an outer circumferential surface to the receiving slot, the anti-dust wall protruded on an inner rim of the first circumferential surface: a ratchet head, rotatably disposed in the receiving slot, and including an assembling protrusion; a cover cap, covered on the body and above the ratchet head, including a second anti-dust portion corresponding to the first anti-dust portion in shape and a sliding slot penetrating through the cover cap, wherein the second anti-dust portion includes a circumferential protrusion facing the first circumferential surface and a circumferential concave adjacent a inner rim of the circumferential protrusion, the circumferential protrusion engages with the anti-dust wall, the circumferential protrusion is disposed adjacent to the anti-dust wall radially, an end of the sliding slot is formed with a flange extending inward radially; a stuck mechanism, including a pushing assembly and a jamming member, the pushing assembly disposed in the ratchet head and movable between a stuck position and a releasing position, the stuck mechanism including a pushing plate, the pushing plate provided with a stopping member outwardly protruding on a lateral side, the stopping member getting stuck with the flange so that the pushing plate limited in the sliding slot, the jamming member movably disposed in the ratchet head and selectively protruding outside the assembling protrusion partially, the pushing assembly moving from the stuck position to the releasing position via pushing the pushing plate from outside, when the pushing assembly is located on the stuck position, the pushing assembly pushes the jamming member and the jamming member protrudes outside the assembling protrusion partially, when the pushing assembly is located on the releasing position, the pushing assembly unpushes the jamming member and the jamming member moves back in the assembling protrusion. Another ratchet wrench is also provided, a body, including a receiving slot and a first anti-dust portion circumferentially disposed outside the receiving slot, the first anti-dust portion including a first circumferential surface and an anti-dust wall, the first circumferential surface extending from an outer circumferential surface to the receiving slot, the anti-dust wall protruded on an inner rim of the first circumferential surface; a ratchet head, rotatably disposed in the receiving slot, including a second anti-dust portion corresponding to the first anti-dust portion in shape and an assembling protrusion, wherein the second anti-dust portion includes a circumferential protrusion facing the first circumferential surface and a circumferential concave adjacent a inner rim of the circumferential protrusion, the circumferential protrusion engages with the anti-dust wall, the circumferential protrusion is disposed adjacent to the anti-dust wall radially, an end of the sliding slot is formed with a flange extending inward radially; a cover cap, covered on the body and above the ratchet head, including a sliding slot penetrating through the cover cap, the sliding slot formed with a flange extending inward radially; a stuck mechanism, including a pushing assembly and a jamming member, the pushing assembly disposed in the ratchet head and movable between a stuck position and a releasing position, the stuck mechanism including a pushing plate, the pushing plate provided with a stopping member outwardly protruding on a lateral side, the stopping member getting stuck with the flange so that the pushing plate limited in the sliding slot, the jamming member movably disposed in the ratchet head and selectively protruding outside the assembling protrusion partially, the pushing assembly moving from the stuck position to the releasing position via pushing the pushing plate from outside, when the pushing assembly is located on the stuck position, the pushing assembly pushes the jamming member and the jamming member protrudes outside the assembling protrusion partially, when the pushing assembly is located on the releasing position, the pushing assembly unpushes the jamming member and the jamming member moves back in the assembling protrusion.