Patent ID: 8087330
Filing Date: 2012-01-03
Classification: B25B

Abstract:
1. A hand tool with warning effect, comprising: a main body; a torque sensor disposed in the main body for detecting an operation torque of the hand tool; a music player disposed in the main body for playing music; and a circuit device disposed in the main body, wherein the circuit device includes: a processing unit for controlling operation of the circuit device, a torque value being set in the circuit device, the operation torque detected by the torque sensor being transmitted to the processing unit, the processing unit serving to compare the operation torque with the set torque value; a display unit connected to the processing unit; an input/operating/controlling unit connected to the processing unit; a warning sound generator connected to the processing unit for generating warning signal; a first signal switching buffer and a second signal switching buffer, an input terminal of the first signal switching buffer being connected to the music player and the processing unit, whereby music signals are transmitted to the first signal switching buffer, an input terminal of the second signal switching buffer being connected to the processing unit and the warning sound generator, whereby the warning signal is transmitted to the second signal switching buffer; and an audio output port; each output terminal of the two signal switching buffers being connected to the audio output port; in the case that the detected torque value is not greater than the set torque value, the first signal buffer remaining turned on, while the second signal switching buffer being shut off by the processing unit; in the case that the detected torque value exceeds the set torque value in abnormal state, the processing unit turning on the warning sound generator and the second signal switching buffer, whereby the warning signal is transmitted to the audio output port.