Impact power tool
AssigneeMakita Corporation
InventorYonosuke Aoki
Life of this patent
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Abstract
An object of the invention is to provide an improved technique for lessening an imp force caused by rebound of a tool bit after its striking movement in an impact power tool. representative impact power tool comprises a tool body, a hammer actuating member, a holder, a driving mechanism, a weight placed in contact with the hammer actuating member move rearward by a reaction force transmitted from the hammer actuating member when hammer actuating member performs a hammering operation on the workpiece and an ela element elastically deformed when the weight moves rearward in the tool body to push the ela element such that the elastic element absorbs the reaction force transmitted to the weight. weight is defined one or both of the cylinder and the tool holder.
Claims8
An impact power tool comprising:
- a tool body,
- a hammer actuating member that is disposed in a tip end region of the tool body a performs a predetermined hammering operation on a workpiece by reciprocating movement in axial direction,
- a tool holder to entirely or partially hold the hammer actuating member,
- a driving mechanism that is disposed on the rear side of the tool body opposite hammer actuating member and linearly drives the hammer actuating member,
- a cylinder that houses the driving mechanism,
- a weight placed in contact with the hammer actuating member to move rearward in tool body by a reaction force transmitted from the hammer actuating member when the ham actuating member performs a hammering operation on the workpiece and
- an elastic element elastically deformed when the weight moves rearward in the t body to push the elastic element such that the elastic element absorbs the reaction fo transmitted to the weight, wherein the weight is defined one or both of the cylinder and the t holder.
Dependencies are inferred from the claim text.