US 12,115,636 B2
Power tool
Takeshi Kamiya, Anjo (JP)
Assigned to MAKITA CORPORATION, Anjo (JP)
Filed by MAKITA CORPORATION, Anjo (JP)
Filed on Nov. 16, 2022, as Appl. No. 17/988,093.
Claims priority of application No. 2021-205366 (JP), filed on Dec. 17, 2021.
Prior Publication US 2023/0191577 A1, Jun. 22, 2023
Int. Cl. B25D 11/06 (2006.01); B25D 11/10 (2006.01); B25D 17/04 (2006.01); B25D 17/08 (2006.01); B25D 17/26 (2006.01)
CPC B25D 11/064 (2013.01) [B25D 11/10 (2013.01); B25D 17/04 (2013.01); B25D 17/08 (2013.01); B25D 17/26 (2013.01); B25D 2250/085 (2013.01); B25D 2250/141 (2013.01); B25D 2250/221 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A power tool, comprising:
a motor;
an output shaft located frontward from the motor and rotatable by the motor, the output shaft having an insertion hole extending rearward from a front end of the output shaft;
a bearing supporting the output shaft in a rotatable manner;
a locking member supported by the output shaft and movable to a locking position for locking a tip tool placed in the insertion hole and to an unlocking position for unlocking the tip tool;
a bit sleeve surrounding the output shaft, the bit sleeve being movable to a movement-restricting position for restricting radially outward movement of the locking member and to a movement-permitting position for permitting radially outward movement of the locking member;
an operable member operable to move the bit sleeve, the operable member at least partly overlapping the bearing in an axial direction;
a hammer case accommodating at least a part of the output shaft and holding the bearing, and
a converter configured to convert rotation of the operable member into movement of the bit sleeve, wherein
the operable member includes a cam, and
the converter includes
a pin movable in the axial direction while being in contact with the cam in response to rotation of the operable member, and
a bit washer in contact with the pin and the bit sleeve, and
the pin and the bit washer are supported by the hammer case in a manner immovable relative to the hammer case in the circumferential direction.