Patent ID: 7661337

Claim:
A reversible wrench comprising: a handle, a driving portion extending from an end of the handle, a driving member accommodated in an accommodating portion of the driving portion, at least one urging pawl, a receiving portion equipped with a side of the accommodating portion and accommodating the at least one urging pawl, two button-restricting portions formed and connected with the receiving portion and two button-accommodating portions formed at the handle between the button-restricting portions and the handle, with the two button-accommodating portions opposed to each other, and with the button-accommodating portions and the receiving portion of the wrench being intercommunicated; a positioning device; and two direction switch devices, each disposed between the handle and the driving portion and including a direction switch button including a button-fixing portion adapted to drive the urging pawl, and a button-fixing device including an actuating member having two button-actuating portions wedged in the button-fixing portion of the two direction switch buttons respectively, with each direction switch button having a fixing portion and the positioning device engaged in one fixing portion, with the positioning device received in a positioning portion of the wrench, and with the button-fixing device disposed between the positioning device and the receiving portion; wherein the button-fixing device further includes a restoring member adapted to be pushed by the actuating member for providing an elastic prestressing force; wherein the actuating member and the restoring member are received in a containing portion of the wrench, with the containing portion including a first diametrical cross sectional area, and with the containing portion including a stropping portion with a second diametrical cross sectional area reduced from the first diametrical cross sectional area; wherein the actuating member includes a third diametrical cross sectional area and an urging portion extended thereon, with the urging portion including a fourth diametrical cross sectional area increased from the third diametrical cross sectional area, with the restoring member of the button-fixing device having one end pushing against the urging portion of the actuating member and another end retained in the stopping portion, so that the button-actuating portion is adapted to be moved elastically to wedge into the button-fixing portion of the direction switch button.