发明名称 |
Rechargeable electric power tool |
摘要 |
In a rechargeable electric power tool (6), upon changeover of a trigger switch (5), a microcomputer (11) determines the magnitude relation between the detected temperature outputted from the first thermistor (9) and the first temperature threshold value (T th1 ), the second temperature threshold value (T th2 ) and the third temperature threshold value (T th3 ), and the magnitude relation between the first calculated temperature increase rate and the first preset temperature increase rate. If the detected temperature is determined to be greater than the first temperature threshold value or if the first calculated temperature increase rate is determined to be greater than the first preset temperature increase rate after the detected temperature has been determined to be greater than the second temperature threshold value, the microcomputer is set in a limited operation mode in which the revolution number of the motor is limited to a predetermined value or less. |
申请公布号 |
EP2184831(A2) |
申请公布日期 |
2010.05.12 |
申请号 |
EP20090014081 |
申请日期 |
2009.11.10 |
申请人 |
PANASONIC ELECTRIC WORKS POWER TOOLS CO., LTD. |
发明人 |
MIWA, TATSUYA;NISHII, KAZUHIKO;KUBOTA, ATSUMASA;TOYAMA, KAZUTO;IKEDA, MASAKI |
分类号 |
H02J7/00 |
主分类号 |
H02J7/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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