US 12,134,178 B2
Power tool
Guoming Tong, Nanjing (CN); Masatoshi Fukinuki, Nanjing (CN); Xiang Zhao, Nanjing (CN); Jiayu Li, Nanjing (CN); Lei Tian, Nanjing (CN); Jun Le, Nanjing (CN); and Liangzhe Wang, Nanjing (CN)
Assigned to Nanjing Chervon Industry Co., Ltd., Nanjing (CN)
Filed by Nanjing Chervon Industry Co., Ltd., Nanjing (CN)
Filed on Dec. 28, 2022, as Appl. No. 18/090,153.
Claims priority of application No. 202210109123.3 (CN), filed on Jan. 28, 2022; application No. 202210498792.4 (CN), filed on May 9, 2022; application No. 202210499712.7 (CN), filed on May 9, 2022; and application No. 202221098801.2 (CN), filed on May 9, 2022.
Prior Publication US 2023/0286130 A1, Sep. 14, 2023
Int. Cl. B25F 5/02 (2006.01); H02K 7/00 (2006.01); H02K 7/14 (2006.01); H02K 11/28 (2016.01); H02K 21/16 (2006.01); B27C 5/10 (2006.01)
CPC B25F 5/02 (2013.01) [H02K 7/003 (2013.01); H02K 7/145 (2013.01); H02K 11/28 (2016.01); H02K 21/16 (2013.01); B27C 5/10 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A power tool, comprising:
a housing provided with an accommodation space;
an electric motor comprising a stator and a rotor, wherein the rotor is operably coupled to a drive shaft for outputting power, and the drive shaft rotates about a first axis;
a chuck for connecting a tool bit, wherein the chuck is operably coupled to the drive shaft; and
a shaft locking assembly operably coupled to the chuck and having a first state where the chuck is restrained from rotating and a second state where the chuck is released to rotate;
wherein the shaft locking assembly comprises at least one locking portion coupled to one of the drive shaft or the chuck and an execution portion selectively engaging with at least one of the locking portions, and, each time when the electric motor stops, at least one of the locking portions stops at an engaging position capable of engaging with the execution portion.