Patent ID: 7748296

Claim:
A ratchet screwdriver with an accelerating structure, comprising: a ratchet seat comprising a barrel, a ratchet, two blocks, two springs and a socket unit, said ratchet having a first through hole and two slots therein, said two slots interconnecting with said first through hole and disposed at two opposite sides of said ratchet; a front handle connected to said ratchet seat, said front handle comprising a second chamber, a second through hole, and a third chamber, a circular inner gear meshing with a number of planet gears being provided in said third chamber, each said planet gear comprising a shaft connected with a pair of circular boards at upper and lower ends thereof; a rear handle coupled to the front handle, said rear handle having a third through hole at one end and a fourth chamber at another end thereof, a number of holes being formed around said third through hole corresponding in position to said shaft of each said planet gear; a sleeve connecting rod comprising a first end, a second end, and a pair of engaging blocks corresponding to and seating in said slots of said ratchet, said first end of said sleeve connecting rod being provided with a solar gear, said solar gear being disposed among said planet gears and meshing with said planet gears, said first end of said sleeve connecting rod being provided with a first connecting member behind said solar gear, said first connecting member passing through said third through hole of said rear handle and entering said fourth chamber of said rear handle, a second connecting member being connected with said first connecting member to secure said sleeve connecting rod to said rear handle; and a tail cap coupled to said rear handle, said tail cap comprising a number of compartments therein.