| 摘要 |
The present invention relates to a handle for a grinder capable of controlling speeds, which enables a user to use a grinder safely and conveniently while driving the grinder by controlling speeds such as turning on or off the power with the rotation of the handle. The present invention comprises: a handle rotating portion; N number of photo interrupters (N is a positive integer) outputting on/off signals, respectively depending on the rotation of the handle rotating portion; and a controller producing a control signal for the speed control of the grinder by combining each on or off signal from the N number of photo interrupters. Therefore, the power switch function and the speed control function are provided by the rotation of the handle at the same time. |
