主权项 |
1. An adjustable ratchet wrench comprising:
a head, a handle connected to a connection end of the head, a space defined in the head and a first toothed portion defined in an inside of a first inner end of the space, a recess defined in the inside of the first inner end of the space, a first reception hole defined in an inside of a second inner end of the space; a first pawl located in the space and having a first engaging portion, a first pin extending through a first hole in the first pawl to pivotably position the first pawl in the head, the first engaging portion protruding through the recess in the inside of the first inner end of the space and located in the space, a positioning unit located between the first pawl and an inside of the recess in the head so as to bias the first pawl toward the space; a hollow slide located in the space and having a second toothed portion defined in a first end thereof, the second toothed portion facing the first toothed portion, an end hole defined in a second end of the slide, multiple through holes defined through a wall of three sides of the second end of the slide and each through hole having a pin inserted therein, an index member extending from a top side of the second end of the slide; a second pawl pivotably located in a recess defined in the first end of the slide by extending a second pin through a second hole defined in the second pawl, the second pawl having a second engaging portion which protrudes from the first end of the slide and faces the space, another positioning unit located between an inside of the recess in the first end of the slide and the second pawl to bias the second pawl toward the space; a threaded rod extending through the reception hole and located in the slide, the threaded rod having outer threads and an engaging section, the pins extending through the slide contacting the outer threads, the engaging section connected with a knob, a second reception hole defined in an end of the threaded rod, a resilient member being biased between two respective inner ends of the first and second reception holes, and a cover fixed to a top of the head and having a slot defined therethrough, the index member extending through the slot, multiple marks being marked on the cover along one side of the slot. |