| 主权项 |
1. An adjustable wrench comprising:
a handle for a user to grasp when operating the adjustable wrench, with the handle having an outer periphery thereof including a notch and a concavity defined therein, with the concavity including an arcuate section; a driving head pivotally fixed about a pivot axis to the handle for engaging an object that is driven by the adjustable wrench, wherein the driving head includes a fixed jaw and a movable jaw movably engaged with the fixed jaw, and an adjusting mechanism engaged with the movable jaw and operably movable to move the movable jaw to a predetermined position with respect to the fixed jaw, wherein the handle and the driving head include an abutting member engaged therebetween releasably engaged with the adjusting mechanism, with the abutting member engaged with the adjusting mechanism when the adjustable wrench is operated in the first direction, with the abutting member disengaged from the adjusting mechanism when the adjustable wrench is operated in the second direction, with the abutting member including a fixed end of an arcuate shape corresponding to and for axial slideable receipt in the arcuate section of the concavity while preventing movement of the abutting member in a radial direction out of the arcuate section of the concavity, wherein the fixed end of the abutting member is pivotally engaged in the arcuate section of the concavity of the handle; and first and second springs engaged between the driving head and the handle, with the first and second springs each including a first end abutting against the handle and a second end abutting against the driving head, respectively, with the notch receiving the first and second springs, with coils of the second spring disposed within a space delimited by coils of the first spring, with one of the first and second springs coiled clockwise from the first end to the second end thereof, with another of the first and second springs coiled counterclockwise from the first end to the second end thereof; wherein the adjustable wrench is operable in a first direction wrenching the object and including the driving head not moving relative to the handle, and in a second direction moving relative to the object and including the driving head pivotally moving relative to the handle with the first and second springs each having a longitudinal length changing between a released length and depressed length, thereby assisting relative movement therebetween. |
