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Patent Searching and Data

Document Type and Number:
WIPO Patent Application WO/2018/042982
Kind Code:
The present invention provides a failure diagnosis system that allows for easier identification of a failure part of an electric tool than before. The failure diagnosis system is provided with an electric tool 1 that has a function for storing usage history information thereof, and a diagnosis device 100 that can be connected with the electric tool 1. The diagnosis device 100 reads the usage history information of the electric tool 1 from the electric tool 1 to which the diagnosis device 100 has been connected, estimates a failure part of the electric tool 1 on the basis of the usage history information, and reports information indicating the failure part. The usage history information includes at least one of the motor operation time, the number of operations of a motor driving switch, the power supply voltage, a motor current, the motor temperature, the temperature of a motor driving circuit, whether or not the motor can be driven, the presence or absence of a high-temperature abnormality, the presence or absence of an overcurrent abnormality, and the presence or absence of an overvoltage abnormality.

NOGUCHI Yuta (1060, Taked, Hitachinaka-City Ibaraki 02, 〒3128502, JP)
HORIE Yuki (1060, Taked, Hitachinaka-City Ibaraki 02, 〒3128502, JP)
FUNABASHI Kazuhiko (1060, Taked, Hitachinaka-City Ibaraki 02, 〒3128502, JP)
Application Number:
Publication Date:
March 08, 2018
Filing Date:
July 28, 2017
Export Citation:
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HITACHI KOKI CO., LTD. (15-1, Konan 2-chome Minato-k, Tokyo 20, 〒1086020, JP)
International Classes:
G06Q10/00; B25F5/00; G06F17/30; G06K17/00
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