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Patent Searching and Data


Title:
MOTOR APPLICABLE TO HAND-HELD ELECTRICAL TOOL, AND SAME
Document Type and Number:
WIPO Patent Application WO/2019/096223
Kind Code:
A1
Abstract:
A brush motor (3), and a hand-held electrical tool using the motor (3). The motor (3) comprises: a one-piece stator (31); a rotor (32) provided within the stator (31); and an armature shaft (33) fixedly connected to the rotor (32). The outer diameter of the stator (31) is not greater than 58 mm. The range of an outer diameter ratio of the rotor to the stator is 0.6 to 0.7. The ratio of a maximum output power of the motor (3) to the volume thereof is greater than 8.5 W/cm3. The invention reasonably configures a size ratio of the stator to the rotor in the motor, and enhances the output capacity of the motor (3) compared with motors having the same size. The invention applies the motor (3) to a hand-held electrical tool to enhance the output power thereof while ensuring comfort when holding the tool.

Inventors:
ZHAO XIAO (CN)
ZHOU ZHONGYA (CN)
WU HONGBING (CN)
WU HAIQUAN (CN)
BIAN YINHANG (CN)
LI WEIFENG (CN)
LU HUI (CN)
LI HUI (CN)
ZHANG WEI (CN)
Application Number:
PCT/CN2018/115725
Publication Date:
May 23, 2019
Filing Date:
November 15, 2018
Export Citation:
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Assignee:
POSITEC POWER TOOLS SUZHOU CO LTD (CN)
International Classes:
H02K27/00; B24B23/02; B25F5/02
Foreign References:
CN105305721A2016-02-03
CN104853879A2015-08-19
CN106160390A2016-11-23
CN205342073U2016-06-29
CN102149515A2011-08-10
Attorney, Agent or Firm:
SHANGHAI ESSEN PATENT&TRADEMARK OFFICE (CN)
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