Screw-cutting shear
AssigneeZhejiang Prulde Electric Appliance Co., Ltd.
InventorChenghao Yang
Life of this patent
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Abstract
A screw-cutting shear includes a shear base and a shear lever which are hinged with each other; a rotary cam is arranged on the shear base, a track groove is formed on a sidewall of the cam, and a first drive piece fitted with an outer sidewall of the cam and a second drive piece fitted with the track groove are provided on the shear lever. The shear lever has a shearing position and an expanded position. The cam pushes the first drive piece to move along the outer sidewall of the cam, driving the shear lever to shift from the expanded position to the shearing position. The cam pulls the second drive piece to move along an inner wall of the track groove, driving the shear lever to shift from the shearing position to the expanded position.
Claims10
A screw-cutting shear, comprising a shear base and a shear lever which are hinged with each other, a stationary blade being provided on the shear base, a moving blade being provided on the shear lever for interacting with the stationary blade for shearing, wherein a cam, which is rotatable, is arranged on the shear base, a track groove is formed on a sidewall of the cam, and a first drive piece fitted with an outer sidewall of the cam and a second drive piece fitted with the track groove are provided on the shear lever;
- wherein the shear lever has a shearing position and an expanded position;
- the first drive piece moves along the outer sidewall of the cam, driving the shear lever to shift from the expanded position to the shearing position;
- the second drive piece moves along an inner wall of the track groove, driving the shear lever to shift from the shearing position to the expanded position.
Dependencies are inferred from the claim text.