US 12,330,274 B2
Impact tool
Guangjie Ji, Nanjing (CN); Hongtao Ke, Nanjing (CN); and Shuai Chen, Nanjing (CN)
Assigned to Nanjing Chervon Industry Co., Ltd., Nanjing (CN)
Filed by Nanjing Chervon Industry Co., Ltd., Nanjing (CN)
Filed on Aug. 17, 2023, as Appl. No. 18/451,166.
Claims priority of application No. 202211260849.3 (CN), filed on Oct. 14, 2022; and application No. 202211261645.1 (CN), filed on Oct. 14, 2022.
Prior Publication US 2024/0123581 A1, Apr. 18, 2024
Int. Cl. B25B 21/02 (2006.01); B25F 5/00 (2006.01)
CPC B25B 21/02 (2013.01) [B25F 5/001 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An impact tool, comprising:
a housing;
an electric motor comprising a stator, a rotor, and a motor shaft rotating about a first axis;
an output shaft used for outputting power and rotating about an output axis; and
an impact assembly used for providing an impact force for the output shaft and comprising a main shaft,
wherein the main shaft is driven by the motor shaft to rotate about an axis of the main shaft, the housing comprises a first housing for accommodating at least part of the main shaft, and the first housing has a support portion, a sliding bearing is connected to the support portion, and the sliding bearing forms sliding friction with the main shaft in a direction of rotation of the main shaft, a first bearing supports a front part of the motor shaft and is at least partially disposed in the support portion, and
a stator front-end plate is disposed at a front end of the stator of the electric motor, the main shaft includes a main portion, a rotating support portion and a connecting portion located between the main portion and the rotating support portion, a distance between the stator front-end plate and a rear end surface of the connecting portion is less than or equal to 10 mm.