Zero-oscillation-amplitude wrench

The invention discloses a zero-oscillation-amplitude wrench and belongs to the technical field of wrenches. The zero-oscillation-amplitude wrench is provided for overcoming the defect that oscillationoperation of an existing wrench is greatly limited by the space. The wrench comprises a handle and a wrench head. The handle is hollow. A guide rod capable of rotating relative to the handle is arranged in the handle. A shell fixed to the handle is arranged between the handle and the wrench head. A reversing transmission mechanism capable of transferring rotation of the guide rod to the wrench head to make the wrench head rotate is arranged in the shell. Through the zero-oscillation-amplitude wrench provided by the invention, the wrench head can be driven to rotate by rotating the guide rod in situ without swinging the handle. The zero-oscillation-amplitude wrench is also easy to operate even if in a narrow space. 本发明公开了种零摆幅扳手，属于扳手技术领域，目的在于克服扳手的摆动操作受空间较大限制的缺陷。扳手包括把手和扳头，所述把手中空，所述把手内设置能够相对所述把手转动的导杆，所述把手和扳头之间具有固定在所述