Title:
POWER TOOL, AND CONTROL CIRCUIT AND CONTROL METHOD FOR POWER TOOL
Document Type and Number:
WIPO Patent Application WO/2019/124007
Kind Code:
A1
Abstract:
[Problem] To prevent data such as setting data stored in information storage means from being destroyed due to a counter-electromotive force generated by an electric motor. [Solution] According to the present invention, an electric driver is provided with: an electric motor; a Hall sensor which detects rotation of the electric motor and transmits a rotation detection signal; and a memory which stores setting data related to the control of the electric motor. When a voltage is applied to a control circuit of the electric driver and the control circuit is activated (S100), the Hall sensor detects the rotation of the electric motor and an access to the memory is not allowed while the electric motor is rotating (S104). When a time in which the electric motor stops is a prescribed reference time (100 ms) or longer, an access to the memory is allowed (S106, S108).
Inventors:
ARAI SHOTA (JP)
Application Number:
PCT/JP2018/043745
Publication Date:
June 27, 2019
Filing Date:
November 28, 2018
Export Citation:
Assignee:
NITTO KOHKI CO (JP)
International Classes:
B25F5/00
Domestic Patent References:
| WO2006052825A2 | 2006-05-18 |
Foreign References:
| JP2008092622A | 2008-04-17 | |||
| JP2017217731A | 2017-12-14 |
Attorney, Agent or Firm:
ITOH, Shigeru et al. (JP)
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