| 摘要 |
A power tool (1) comprising: a handle housing (12) that defines a handle; a motor (14) received in said handle housing; a transmission housing containing a transmission(16), said transmission housing received in said handle housing, said transmission housing having a first axially extending channel and a second axial extending channel, said transmission including a gear movable between a first position and a second position; a connecting member having a first end, a second and a middle portion, said middle portion coupled to said gear, said first portion extending through said first channel and said second portion extending through said second channel; a selector cam (520) slidingly coupled to an outer surface of said housing, said selector cam having at least a first groove that receives said first end and a second groove that receives said second end, each of said grooves includes a closed structure so that said selector cam contains said first end and said second end of said connecting member regardless of the circumferential position of said selector cam relative to said housing. |
