Power tool with dynamic vibration damping
AssigneeMakita Corporation
InventorYonosuke Aoki
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Abstract
It is an object of the invention to provide a technique that contributes to improvement of the vibration reducing performance of a dynamic vibration reducer in a power tool while realizing reduction in size of the dynamic vibration reducer. A representative power tool which linearly drives a tool bit to perform a predetermined operation on a workpiece includes a tool body and a dynamic vibration reducer. The dynamic vibration reducer has a weight and an elastic element. The weight has an internal space that extends in the axial direction of the tool bit from at least one end of the weight in said axial direction. One end of the elastic element is inserted and received in the internal space, while the other end of the elastic element is placed on the tool body directly or via the body side member.
Claims10
A power tool which linearly drives a tool bit to perform a predetermined operation on a workpiece comprising:
- a tool body, and
- a dynamic vibration reducer having a weight mounted directly or via a body side member to the tool body to linearly move in an axial direction of the tool bit, and an elastic element that elastically supports the weight on the tool body directly or via the body side member, wherein the dynamic vibration reducer reduces vibration of the tool body during hammering operation by the linear movement of the weight, wherein:
- the weight defines an internal space that extends at least partially within itself in the axial direction of the tool bit from at least one end of the weight in said axial direction, and
- one end of the elastic element is inserted and received in the internal space, while the other end of the elastic element is placed on the tool body directly or via the body side member.
Dependencies are inferred from the claim text.