Torque wrench

A torque wrench comprising:

• a motor;
• an output shaft;
• a straight hollow handle for housing the motor therein, the hollow handle having a grip integrally formed at the rear thereof;
• a head disposed in front of the hollow handle and rotatably supporting the output shaft in the vertical direction so as to be orthogonal to the longitudinal direction of the hollow handle;
• a transmission shaft disposed in the hollow handle;
• a rotation-direction changeover mechanism which transmits the rotation of the motor to the output shaft via the transmission shaft;
• a sheath tube which covers the front half of the hollow handle with a predetermined gap between the inner surface of the sheath tube and the outer surface of the hollow handle, and which is connected to the head at the front thereof and to the front of the hollow handle;
• a slider moveably disposed around the hollow handle in the longitudinal direction of the hollow handle such that the front end surface of the slider opposes the rear end surface of the sheath tube;
• a torque transmitting mechanism disposed between the mutually opposing end surfaces of the slider and the sheath tube;
• and
• a torque adjusting mechanism disposed in the rear of the slider and around the rear half of the hollow handle.