Search International and National Patent Collections

1. (WO2018180084) ELECTRIC TOOL

Pub. No.:    WO/2018/180084    International Application No.:    PCT/JP2018/006762
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Sat Feb 24 00:59:59 CET 2018
IPC: B25F 5/00
B23D 45/16
Applicants: KOKI HOLDINGS CO., LTD.
工機ホールディングス株式会社 
Inventors: MATSUSHITA Akira
松下 央
NISHIKAWA Tomomasa
西河 智雅
Title: ELECTRIC TOOL
Abstract:
Provided is an electric tool capable of effectively cooling a control unit. The electric tool has: a housing 3 which has a first intake port 311A, a second intake port 312A and a third intake port 311B which are capable of taking in outside air, also has an exhaust port 321A capable of discharging the outside air to the outside, and has a cooling wind passage formed therein so as to extend from the first intake port 311A and the second intake port 312A to the exhaust port 321A; a motor 4 which has a stator 43 and is provided inside the cooling wind passage inside the housing 3; a fan 45 which generates the cooling wind that flows through the cooling wind passage from the first intake port 311A and the second intake port 312A to the exhaust port 321A; and a control unit 5 which controls the motor 4, is provided inside the cooling wind passage inside the housing 3, and is positioned downstream from the motor 4 in the direction in which the cooling wind flows. Furthermore, the third intake port 311B is positioned downstream from the upstream end of the stator 43 in the direction in which the cooling wind flows.