Ratchet wrench

包括有手柄(7)、驱动扭柱(9)和棘轮机构(20)的棘轮扳手还包括一工具松释机构。此工具松释机构包括沿驱动扭柱(9)中心线滑动的控制杆(2)以及可在横切此驱动扭柱轴线的平面中滑动的斜面(42)。所示的致动器(40)限制于棘轮的区域中而不会在棘轮机构的棘爪(25)与扳手的头部之间运动。定心件(30)从扳手头部延伸入棘轮的与驱动扭柱(9)相对的面上一环形凹座(24)内。此致动器(40)在定心件(30)两相对的部分间运动。 A ratchet wrench including a handle, a drive stud and a ratchet mechanism further includes a tool release mechanism. The tool release mechanism includes a control rod that slides along the centerline of the drive stud and a ramp that is slidable in a plane transverse to the drive stud axis. The illustrated actuator is confined to the region of the ratchet wheel, and does not move between the pawl of the ratchet mechanism and the head of the wrench. Centering elements extend from the head of the wrench into an annular recess on a face of the ratchet wheel opposed to the drive stud. The actuator moves in a gap formed between opposed portions of the centering element.