发明名称 |
METHOD AND APPARATUS FOR PROVIDING TORQUE LIMIT FEEDBACK IN A POWER DRILL |
摘要 |
A battery-powered tool indicates to an operator that a torque limit has been reached. The tool comprises a driver circuit for generating motor interface driving signals, a motor interface circuit coupled to a motor to selectively couple power to the motor in accordance with the motor driving signals, a torque limit signal generator for generating a torque limit signal, a motor torque signal generator for generating a torque signal corresponding to a torque generated by the motor, and a microcontroller for comparing the motor torque signal to the torque limit signal and for generating a torque limit indicating signal in response to the torque signal being equal to or greater than the torque limit signal so the driver circuit operates the motor to vibrate to alert an operator that the torque limit has been reached. |
申请公布号 |
WO2007056255(A2) |
申请公布日期 |
2007.05.18 |
申请号 |
WO2006US43145 |
申请日期 |
2006.11.03 |
申请人 |
ROBERT BOSCH GMBH;DECICCO, JOHN;KOVARIK, ILLYA |
发明人 |
DECICCO, JOHN;KOVARIK, ILLYA |
分类号 |
B25B23/14;B25F5/02;H02P7/00 |
主分类号 |
B25B23/14 |
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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