Patent ID: 7536896
Filing Date: 2009-05-26
Classification: B25B,H01R,Y10T

Abstract:
1. Pliers comprising: a left grip and a right grip; a positioned clamping base fixed on a top of said left grip and provided with a pivot; by the pivot to pass through the positioned clamping base and a movable clamping base, the positioned claiming base being pivotally jointed with said movable clamping base, a first notch and a first recess formed in said positioned clamping base, two holes respectively bored in a top side of a wall enclosing said first notch and a bottom of a wall enclosing said first recess which are positioned to be correspondent to each other, and a through hole bored in a bottom of the wall enclosing said first notch to communicate with said recess; said movable clamping base fixed on a top of said right grip and provided with a second notch and a second recess formed in the inner side thereof and being positioned to be correspondent to those of said positioned clamping base, two holes respectively bored in a top side of a wall enclosing said second notch and a bottom of a wall enclosing of said second recess and positioned to be correspondent to each other, and a through hole bored in a bottom of the wall enclosing of said second notch to communicate with said recess; a first clamping member and a second clamping member respectively installed in said first notch and said second notch of said positioned clamping base and said movable clamping base and the first clamping members having a Y shape structure with three plates extending from a center thereof; an outer edge of each plate of being formed with a plurality of curved grooves; and the second clamping member having a Y shape structure with three plates extending from a center thereof; an outer edge of each plate of the second clamping member being formed with a plurality of curved projections; the projections being positioned to be correspondent to said curved grooves, and each of said first and second clamping members provided with a bar formed on a top thereof and a shaft formed on a bottom thereof; and two gears respectively installed in said recess of said positioned clamping base and said recess of said movable clamping base and each gear being provided with a through hole; and wherein in assembling state, two gears are respectively fitted in said first and second recesses of said positioned clamping base and said movable clamping base, keeping the through holes of the two gears respectively corresponding to the through holes of the positioned clamping base and the movable clamping base; next, the clamping members are placed into the notches of the positioned clamping base and the movable clamping base respectively, with the two shafts respectively penetrating through the through holes of the positioned clamping base and the movable clamping base and the through holes of the two gears; and the restricting projections and are respectively fitted in the restricting slots and of the two shafts; the bottoms of the shafts respectively insert into the holes of the recesses; by the time, the two gears are respectively positioned in the recesses of the positioned clamping base and the movable clamping base; the bars of the clamping members are respectively fitted in the holes of the positioned clamping base and the movable clamping base; thus the clamping members are respectively positioned in the notches of the positioned clamping base and the movable clamping base.