Patent ID: 8224547

Claim:
A device for preventing sudden acceleration of an automobile in a structure wherein if an accelerator pedal is depressed, a motor is activated to transmit the power generated therefrom to a valve shaft, and the valve shaft is rotated to open a throttle valve, thereby adjusting a quantity of air supplied to an engine, the device comprising: a power transmission shaft disposed between the motor and the valve shaft and having one end connected to a shaft of the motor and the other end connected to the valve shaft in such a manner as to be rotated by receiving the power from the motor and transmit the power obtained by the rotation to the valve shaft; a fixed rotary member coupled along a portion of the power transmission shaft in such a manner as to be rotated around the power transmission shaft and be not moved forwardly and backwardly together with the power transmission shaft, the fixed rotary member being connected at a portion thereof to the accelerator pedal by means of a wire, such that if the accelerator pedal is depressed, the fixed rotary member is rotated together with the power transmission shaft in a direction capable of opening the throttle valve, and if the accelerator pedal is released, the fixed rotary member is rotated reversely to return to its original position; and a moving rotary member fixedly coupled along a portion of the power transmission shaft in such a manner as to be operated together with the power transmission shaft and disposed to be brought into close contact with the fixed rotary member, such that if the motor is activated in a state where the accelerator pedal is depressed, the moving rotary member is rotated together with the fixed rotary member, and if the motor is activated in a state where the accelerator pedal is not depressed, the moving rotary member is spaced apart from the fixed rotary member to cause the power transmission shaft to be moved, thereby preventing the transmission of the power from the power transmission shaft to the valve shaft.