Patent ID: 7913589
Filing Date: 2011-03-29
Classification: B25B

Abstract:
1. A wrench, comprising: a handle; a driving unit pivotally mounted on and movable relative to the handle; wherein the handle has an end portion provided with a support surface; the driving unit includes: a first jaw pivotally connected with the handle and having a first end pivotally mounted on the end portion of the handle; a second jaw pivotally connected with the first jaw and having a first end pivotally connected with a second end of the first jaw and a second end that is movable to abut the support surface of the handle and the first end of the first jaw; the end portion of the handle has two opposite sidewalls protruding outwardly and each having a first side provided with a pivot ear and a second side provided with the support surface; the pivot ear of the end portion of the handle is provided with a fixing hole; the first end of the first jaw is provided with a pivot hole; the driving unit further includes: a pivot pin extending through the fixing hole of the handle and the pivot hole of the first jaw so that the first end of the first jaw is pivotally mounted on the end portion of the handle; the end portion of the handle is provided with a receiving chamber located between the two opposite sidewalls; the first end of the first jaw is pivotally mounted in the receiving chamber of the handle and is located between the two opposite sidewalls of the handle; the driving unit further includes: an elastic member mounted on the pivot pin and biased between the end portion of the handle and the first end of the first jaw to push the first jaw of the driving unit toward the support surface of the handle.