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US 2015/0144366 A1Published application
Power tool
AssigneeMakita Corporation
InventorYoshitaka MACHIDA
Life of this patent
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Abstract
A hammer drill (101) comprises a main body (103) which houses a driving motor (110) and a driving mechanism and a handle (109) which is movable to the main body (103). Further, a coil spring (160) which biases the handle (109) is provided. In a state that the coil spring (160) biases the handle (109), the handle (109) is moved against the main body (103) in a longitudinal direction of a hammer bit (119) and vibration transmission from the main body (103) to the handle (109) is prevented.
Claims14
A power tool which drives a tool bit in a longitudinal direction of the tool bit and performs an operation, comprising:
- a motor which has an output shaft being parallel to the longitudinal direction of the tool bit,
- a driving mechanism which is connected to the output shaft and driven by the motor,
- a main body which houses the motor and the driving mechanism,
- a main handle which is movable with respect to the main body,
- a guide element which guides the main handle such that the main handle moves in the longitudinal direction of the tool bit with respect to the main body, and
- a biasing member which is arranged between the main body and the main handle and biases the main body and the main handle in the longitudinal direction of the tool bit,
- wherein the main handle moves against the main body in a state that the main handle is biased by the biasing member, and transmission of vibration generated during the operation from the main body to the main handle is prevented.
4 more elements
Dependencies are inferred from the claim text.