Patent ID: 7614605
Filing Date: 2009-11-10
Classification: B25C

Abstract:
1. A universal connector for a pneumatic tool with unlocking by air flow, said universal connector comprising: a first coupler, being hollow and comprising a pneumatic coupling end, an extension end opposite to said pneumatic coupling end, a first flow passage within said first coupler; and a first air hole linked to said first flow passage set on a wall of said extension end; a pin-joint member having one end provided with a through-hole screwed onto said extension end of said first coupler, a locating element employed to limit a relative position of said through-hole and said extension end, a protruding tube arranged at one side of said pin-joint member, and a second flow passage formed within said protruding tube, one end of said second flow passage being linked to said through-hole, and then to said first air hole of said extension end of said first coupler, said pin-joint member having a second air hole linked to said second flow passage set on a wall of said protruding tube; a second coupler having one end comprised of a sleeve screwed into said protruding tube of said pin-joint member, a positioning member employed to limit a relative position of said sleeve and said protruding tube, and another end of said second coupler provided with a coupling portion, forming a third flow passage; wherein one end of said third flow passage is linked to said sleeve and to said second air hole of said protruding tube of said pin-joint member; and wherein said sleeve of said second coupler shifts along a predefined path of said protruding tube of said pin-joint member, forming flexibly first and second positions, said sleeve being provided with a pneumatic pusher, said sleeve being driven to shift from the first position to the second position; and a directional locating member limiting rotation of said sleeve as said sleeve is located at the first position, said directional locating member being mounted between said sleeve and said first coupler, or said pin-joint member.