Switching assembly of ratchet wrench

A ratchet wrench, comprising:

• a handle having a head at an end thereof;
• said head having a receive hole, a first chamber and a second chamber, wherein said first chamber communicating with said receive hole at a side thereof and communicating with said second chamber at the other side thereof;
• a driving member received in said receive hole of said head for free rotating;
• said driving member having a teeth portion at out surface thereof;
• a pawl having a teeth portion at a side thereof and a driven portion at the other side thereof;
• said pawl received in said first chamber of said head with said teeth portion thereof meshing with said teeth portion of said driving member;
• said pawl being driven to switch between a first position and a second position, and
• a switch device having a body and a turning piece;
• said body of said switch device received in said second chamber of said head to be turned between a first position and a second position;
• said body disposing an elastic driving device thereon to be against said driven portion of said pawl, whereby turning said switch device to the first position will drive said pawl to switch to the first position and turning said switch device to the second position will drive said pawl to switch to the second position;
• wherein said body of said switch device having two shoulder portions at two sides of said elastic driving device respectively;
• each shoulder portion having a proximal end, which is closing to said elastic driving device, and a distal end, which is far from said elastic driving device;
• said shoulder portion being a smooth face extending from said proximal end to said distal end;
• the distance between said proximal end and said pawl being smaller than the distance between said distal end and said pawl, whereby said shoulder portion being against said pawl when said switch device being turned to the first position and the other shoulder portion being against said pawl when said switch device being turned to the second position.