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1. (WO2018198671) ELECTRICALLY POWERED TOOL

Pub. No.:    WO/2018/198671    International Application No.:    PCT/JP2018/013673
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Sat Mar 31 01:59:59 CEST 2018
IPC: B25F 5/00
B25F 5/02
Applicants: KOKI HOLDINGS CO., LTD.
工機ホールディングス株式会社 
Inventors: SUZUKI Ryo
鈴木 諒
MIYAZAWA Ken
宮澤 健
Title: ELECTRICALLY POWERED TOOL
Abstract:
Provided is an electrically powered tool having an improved sensor substrate mounting structure, the electrically powered tool being configured so that a brushless type motor is axially contained in a cylindrical housing. The electrically powered tool has: a cylindrical housing 100 for axially containing a motor; a control unit for controlling the motor; and a sensor substrate 11 having mounted thereon a plurality of position detecting elements for detecting the rotational position of a rotor. The sensor substrate 11 is gripped between the insulator 6 of the motor and the housing 100 and held on the housing 100 side when axially mounting the motor. The sensor substrate 11 is annularly shaped and has formed at the center thereof a through-hole 12a through which a bearing for the motor is passed. The portion of the sensor substrate 11, on which a Hall IC is mounted, is provided with a synthetic resin cover member for protecting the Hall IC against dust or the like.