Electric screwdriver

Abstract

An electric screwdriver is disclosed to include a main body, a socket, an actuator, a switch, and a wrenching portion. The actuator is installed inside the main body, which has a front end and a rear end. The socket is rotatably positioned at the front end of the main body and is connected with the actuator. The switch is mounted on the main body. The wrenching portion is positioned at a position in proximity to the front end of the main body.

What is claimed is:  
     
         1 . An electric screwdriver comprising: 
 a main body having a front end and a rear end;    an actuator installed inside the said main body;    a socket rotatably mounted to said front end of said main body and connected with said actuator;    a switch mounted on said main body; and    a wrenching portion positioned in proximity to the front end of said main body.    
     
     
         2 . The electric screwdriver as defined in  claim 1 , wherein said wrenching portion is in the shape of a convex ear and is provided with a main through hole, said main through hole having a longitudinal axle perpendicular to a longitudinal axle of said main body.  
     
     
         3 . The electric screwdriver as defined in  claim 2 , wherein said main body includes two half shells, each said half shell having a convexity positioned in proximity to a front end thereof and a first through hole running through said convexity, said two convexities forming said convex ear, said two first through holes forming said main through hole.  
     
     
         4 . The electric screwdriver as defined in  claim 3 , wherein said two convexities further respectively have a chamber inside, said chamber communicating with said first through hole.  
     
     
         5 . The electric screwdriver as defined in  claim 4  further comprising an auxiliary member installed inside said main body, said auxiliary member having an annular frame, a convex portion, and a second through hole running through said convex portion, said annular frame being fit to said actuator, said convex portion being received in said chambers, said second through hole coaxially communicating with said first through holes.  
     
     
         6 . The electric screwdriver as defined in  claim 5 , wherein said chamber is further provided with a matching recess at an inner periphery thereof; wherein said convex portion further has a matching portion to be embedded into said matching recess.  
     
     
         7 . The electric screwdriver as defined in  claim 1 , wherein said main body is provided with an opening in proximity to said front end thereof and an auxiliary member installed therein, said auxiliary member having a convex portion and a through hole, said convex portion protruding outwardly from said opening of said main body, said through hole running through said convex portion.