Power tool and impact tool
AssigneeMakita Corporation
InventorYasuhito Kawai
Life of this patent
Estimating the term…
Abstract
A power tool includes: a motor; a motor housing that houses the motor; a rotation mechanism disposed on a front side of the motor and including an output portion rotated based on a rotational force of the motor; a rotation mechanism case that is disposed on a front side of the motor housing and houses at least a part of the rotation mechanism; and a screw member that fixes the motor housing and the rotation mechanism case to each other, the screw member reaching the rotation mechanism case from a rear side of the motor housing. The motor is fixed together with the motor housing and the rotation mechanism case by the screw member.
Claims19
A power tool comprising:
- a motor including a rotor that rotates about a rotation axis and a stator disposed around the rotor;
- a motor housing that houses the motor;
- a rotation mechanism disposed on a front side of the motor and including an output portion rotated based on a rotational force of the motor;
- a rotation mechanism case that is disposed on a front side of the motor housing and houses at least a part of the rotation mechanism;
- a bearing holding member (i) disposed between the motor and the rotation mechanism in an axial direction and (ii) including a rotor bearing that supports the rotor in a rotatable manner and a boss portion extending in the axial direction through which a screw member is inserted;
- and
- the screw member that fixes the motor housing and the rotation mechanism case to each other, the screw member reaching the rotation mechanism case from a rear side of the motor housing by passing through the boss portion,
- wherein the motor is fixed together with the motor housing and the rotation mechanism case by the screw member.
An impact tool comprising:
- a motor including a rotor that rotates about a rotation axis and a stator disposed around the rotor;
- a motor housing that houses the motor;
- a rotation mechanism that is disposed forward of the motor and includes a hammer and an anvil, the hammer being rotated about a rotation axis by the motor, the anvil being impacted in a rotation direction by the hammer;
- a rotation mechanism case that is forward of the motor housing and houses at least a part of the rotation mechanism;
- a bearing holding member (i) disposed between the motor and the rotation mechanism in an axial direction and (ii) including a rotor bearing that supports the rotor in a rotatable manner and a boss portion extending in the axial direction through which a screw member is inserted;
- and
- the screw member that fixes the motor housing and the rotation mechanism case to each other, the screw member reaching the rotation mechanism case from a rear side of the motor housing by passing through the boss portion,
- wherein at least a part of the motor is fixed together with the motor housing and the rotation mechanism case by the screw member.
A power tool comprising:
- a motor including a rotor that rotates about a rotation axis and a stator disposed around the rotor;
- a motor housing that houses the motor;
- a rotation mechanism disposed on a front side of the motor and including an output portion rotated based on a rotational force of the motor;
- a rotation mechanism case that is disposed on a front side of the motor housing and houses at least a part of the rotation mechanism;
- and
- a screw member that fixes the motor housing and the rotation mechanism case to each other, the screw member reaching the rotation mechanism case from a rear side of the motor housing,
- wherein the motor is fixed together with the motor housing and the rotation mechanism case by the screw member,
- the rotor is rotatably supported by a front rotor bearing and a rear rotor bearing, and
- a front end of the rear rotor bearing is disposed forward of a rear end of the stator.
Dependencies are inferred from the claim text.