Impact tool and dust collection system
AssigneeMakita Corporation
InventorsKiyonobu Yoshikane, Hiroki Takesashi
Life of this patent
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Abstract
An impact tool includes a housing, an impact mechanism unit, a motor, and a dust collection fan. The housing is configured to mount a dust collection attachment. The impact mechanism unit is disposed inside the housing. The impact mechanism unit has a front end to which a tool bit is mounted and an impact element that reciprocates. The impact mechanism unit is configured to impact the tool bit by the impact element. The motor is disposed such that a rotation shaft of the motor intersects with an impact axis direction of the impact mechanism unit inside the housing. The dust collection fan is disposed on the rotation shaft. The dust collection fan is disposed below the motor.
Claims10
A dust collection system, comprising:
- an impact tool that includes (i) a motor, (ii) an impact mechanism that is configured to (a) be operated by the motor and (b) reciprocally impact a tool bit mounted at a front end of the impact tool when operated by the motor and (iii) a motor housing that houses the motor and the impact mechanism;
- and
- a dust collection attachment that is configured to be removably mounted to the motor housing, wherein:
- one of the motor housing and the dust collection attachment includes a first projecting engagement portion and a second projecting engaging portion;
- a second of the motor housing and the dust collection attachment includes a first depression engaging portion and a second depression engaging portion;
- and
- the motor housing and the dust collection attachment are configured such that:
- (i) the dust collection attachment is a mounted to the motor housing by relative sliding movement between the motor housing and the dust collection attachment in a first direction;
- and
- (ii) when the dust collection attachment is attached to the motor housing, (a) the first projecting engaging portion is retained by the first depression engaging portion and the second projecting engaging portion is retained by the second depression engaging portion, (b) the first projecting engaging portion is spaced from the second projecting engaging portion in the first direction and (c) the first depression engaging portion is spaced from the second depression engaging portion in the first direction.
Dependencies are inferred from the claim text.