US 12,134,177 B2
Power tool
Yang Li, Nanjing (CN); Rui Zhan, Nanjing (CN); Zhongquan Xu, Nanjing (CN); Rong Wang, Nanjing (CN); and Yi Zhang, Nanjing (CN)
Assigned to Nanjing Chervon Industry Co., Ltd., Nanjing (CN)
Filed by Nanjing Chervon Industry Co., Ltd., Nanjing (CN)
Filed on Aug. 11, 2023, as Appl. No. 18/448,273.
Claims priority of application No. 202211033722.8 (CN), filed on Aug. 26, 2022; application No. 202211161435.5 (CN), filed on Sep. 23, 2022; application No. 202211161456.7 (CN), filed on Sep. 23, 2022; application No. 202222757873.X (CN), filed on Oct. 20, 2022; and application No. 202310584103.6 (CN), filed on May 19, 2023.
Prior Publication US 2024/0066679 A1, Feb. 29, 2024
Int. Cl. B25F 5/00 (2006.01); B25F 3/00 (2006.01)
CPC B25F 5/006 (2013.01) [B25F 5/008 (2013.01); B25F 3/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A power tool, comprising:
a housing;
a motor rotatable around a motor axis;
a ball sleeve sleeved on a motor shaft and driven by the motor shaft to move;
an oscillating member driven by the ball sleeve to oscillate; and
an output shaft driven by the oscillating member to rotate around an output shaft axis; and
a first bearing assembly and a second bearing assembly sleeved on the output shaft;
wherein the oscillating member comprises a mounting portion sleeved on the output shaft, the first bearing assembly is located on an upper side of the mounting portion, the second bearing assembly is located on a lower side of the mounting portion, the oscillating member and the ball sleeve are engaged in an engagement region on the oscillating member, a geometric center of the engagement region is defined as an engagement center, a first plane bisects the first bearing assembly along a direction of the output shaft axis, the first plane is perpendicular to the output shaft axis, a second plane bisects the second bearing assembly along the direction of the output shaft axis, the second plane is perpendicular to the output shaft axis, a height from the engagement center to the first plane is a first height H1, a height from the engagement center to the second plane is a second height H2, and a ratio H1/H2 of the first height H1 to the second height H2 is greater than or equal to 0.5 and less than or equal to 1.4.