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US 2008/0277128 A1Published application
Impact tool with vibration control mechanism
AssigneeHitachi Koki Co., Ltd.
InventorShinichirou Satou
Life of this patent
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Abstract
An impact tool is provided that can efficiently reduce the vibration resulting from the striker and that does not lead to a larger design even with the use of a counterweight mechanism. A counterweight mechanism is provided in a motion converter housing, facing the handle. The counterweight mechanism is positioned between a center of gravity of the impact tool and the grip of the handle and is positioned above the control substrate. The counterweight mechanism is equipped with a first support, a second support, a weight support member, and a counterweight.
Claims6
An impact tool comprising:
- a housing:
- a motor having a rotation shaft, the motor being accommodated in the housing and generating a rotational drive force when powered;
- a reciprocating motion converter configured to convert the rotational drive force of the motor to a reciprocating motion reciprocating in directions perpendicular to the rotation shaft of the motor;
- a tool bit attached to one end portion of the housing and driven by the reciprocating motion of the reciprocating motion converter;
- a handle positioned at another end portion of the housing;
- and
- a counterweight mechanism operable to reduce vibrations generated attendant to the reciprocating motion, the counterweight mechanism being disposed in a section of the housing, the section being in confrontation with the handle.
4 more elements
Dependencies are inferred from the claim text.