Reciprocating tool
AssigneeMakita Corporation
InventorsRyosuke Hara, Tomohiro Ukai
Life of this patent
Estimating the term…
Abstract
A reciprocating tool includes a motor, a reciprocating member, and a crank mechanism. The motor is disposed in a housing. The reciprocating member projects from the housing. The crank mechanism converts rotation of a rotation shaft of the motor into reciprocation of the reciprocating member. The crank mechanism rotates around an axis in a lateral direction by rotation transmission from the rotation shaft, and the crank mechanism includes a crank member having an eccentric pin, a connecting rod coupling the eccentric pin to the reciprocating member, and a balancer coupled to the eccentric pin, and the balancer is supported by the eccentric pin alone in the housing.
Claims17
A power tool, comprising:
- a brushless motor that includes a rotation shaft extending in the front-rear direction;
- a handle housing that is a loop type and covers the brushless motor;
- a gear that is disposed frontward of the brushless motor and driven by the rotation shaft;
- a gear housing that is disposed frontward of the handle housing and houses the gear;
- a switch supported by the handle housing;
- a circuit board that is disposed inside the handle housing and mounts a microcomputer or a switching element;
- and
- a capacitor that is disposed inside the handle housing and not mounted on the circuit board.
A power tool, comprising:
- a brushless motor that includes a rotation shaft extending in the front-rear direction;
- a handle housing that includes a grip and a connecting portion disposed frontward of the grip, the handle housing being a loop type and covering the brushless motor;
- a gear that is disposed frontward of the brushless motor and driven by the rotation shaft;
- a gear housing that is disposed frontward of the handle housing and houses the gear;
- and
- a switch supported by the handle housing;
- wherein
- a capacitor is disposed at the connecting portion.
A power tool comprising:
- a brushless motor with a rotation shaft having a rotation axis that extends in a front-rear direction;
- a motor housing that houses the brushless motor;
- a handle housing that (1) extends rearward from the motor housing in the front-rear direction and (2) forms a loop;
- a controller that is configured to control operation of the brushless motor;
- and
- a capacitor electrically connected to the controller;
- wherein:
- the handle housing includes a grip portion configured to be gripped by a user of the power tool and a lower loop connecting portion which connects the grip portion to the motor housing;
- the grip portion is intersected by the rotation axis;
- the controller is housed in the handle housing;
- and
- the capacitor is housed in the handle housing but is not mounted on the controller.
A power tool comprising:
- a brushless motor with a rotation shaft having a rotation axis that extends in a front-rear direction;
- a housing having a motor housing and a handle housing, the motor housing covering the brushless motor and the handle housing having a loop shape;
- a circuit board housed in the handle housing;
- and
- a capacitor electrically connected to the circuit board;
- wherein:
- the handle housing includes a grip portion configured to be gripped by a user of the power tool and a support rib;
- the grip portion is intersected by the rotation axis;
- and
- the capacitor is supported by the support rib but is not mounted on the circuit board.
Dependencies are inferred from the claim text.