Title:
ELECTRIC TOOL
Document Type and Number:
WIPO Patent Application WO/2024/001117
Kind Code:
A1
Abstract:
An electric tool, comprising a housing, a motor located in the housing, a transmission mechanism driven by the motor, and a working head connected to the transmission mechanism. The motor drives the transmission mechanism to drive the working head to move; the motor comprises a motor shaft extending in an axial direction, a rotor fixedly connected to the motor shaft, and a stator located between the motor shaft and the rotor, wherein the rotor is provided with a rotor body in the form of a cylindrical cover, the stator is fixed relative to the housing and comprises a cavity for the motor shaft to pass through, and the stator is at least partially accommodated in the rotor body in the axial direction; the motor further comprises a first bearing sleeved on the motor shaft; and the first bearing is located in the cavity in the axial direction and supports the motor shaft in the housing. The motor is an external rotor motor and by means of the characteristic that the stator is hollow, a second bearing supporting the motor shaft is placed in the cavity of the stator, so that the space occupied by the second bearing in the axial direction of the motor is reduced, thereby reducing the size of the electric tool in the axial direction of the motor.
Inventors:
GUO SHIBIN (CN)
ZHAO CHAO (CN)
LI JIANQING (CN)
ZHAO CHAO (CN)
LI JIANQING (CN)
Application Number:
PCT/CN2022/141893
Publication Date:
January 04, 2024
Filing Date:
December 26, 2022
Export Citation:
Assignee:
JIANGSU DONGCHENG TOOLS TECH CO LTD (CN)
International Classes:
B25B21/02; B25B23/00; H02K1/27; H02K5/16
Foreign References:
| CN115042116A | 2022-09-13 | |||
| CN1689763A | 2005-11-02 | |||
| CN215148601U | 2021-12-14 | |||
| CN102801227A | 2012-11-28 | |||
| CN101728893A | 2010-06-09 | |||
| CN204179910U | 2015-02-25 |
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