Invention Grant
- Patent Title: Rotor, motor and electric tool utilizing the same
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Application No.: US15623017Application Date: 2017-06-14
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Publication No.: US10673295B2Publication Date: 2020-06-02
- Inventor: Wan Hor Looi , Chong Wei Chan , Yuan Tian , Yan Ju Dong
- Applicant: Johnson Electric S.A.
- Applicant Address: CH Murten
- Assignee: JOHNSON ELECTRIC INTERNATIONAL AG
- Current Assignee: JOHNSON ELECTRIC INTERNATIONAL AG
- Current Assignee Address: CH Murten
- Agency: Muncy, Geissler, Olds & Lowe, P.C.
- Main IPC: H02K21/12
- IPC: H02K21/12 ; H02K5/02 ; H02K5/18 ; H02K1/27 ; H02K7/14 ; B27B17/08 ; H02K1/30

Abstract:
A rotor includes a yoke, an end cap, and a rotary shaft. The yoke is fixed relative to the end cap. The rotary shaft extends into the yoke. One end of the rotary shaft is connected to the end cap. The end cap is formed on the yoke and the rotary shaft by injection molding. The present invention further provides a motor and an electric tool including the rotor. In the rotor of this invention, the end cap is formed by injection molding, and the yoke and the rotary shaft are connected into a whole at the same time of forming the end cap. The traditional aluminium end cap is replaced with the molded end cap, which makes the rotor easier to fabricate and have a lighter weight and lower cost.
Public/Granted literature
- US20170366061A1 ROTOR, MOTOR AND ELECTRIC TOOL UTILIZING THE SAME Public/Granted day:2017-12-21
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