Abstract: A safety device for the throttle operation includes a shaft, a linking plate having an end connected and moving with the shaft and another end provided with an projecting bent wing, a pulling plate having one end formed with a shaft hole for combining with the shaft and located at a side of the bent wing and another end resting on an end surface of the bent wing and connected with a throttle line. The bent wing moves the throttle line to move the pulling plate for an angle for opening the throttle. The safety device further includes a contact switch for contacting the linking plate so an engine control system may be electrified by the contact switch to reduce its speed to a slow condition even if the throttle line is stuck immovable and unable to return to its original position after pulling open the throttle, keeping safe a vehicle.

Abstract: A driving mechanism of a steering wheel includes a sector gear driven by a gear shaft to rotate on a gear shaft linked together with the sector gear, and a displacement plate having one end fixed with the gear plate shaft and another end pivotally connected with two directional pull rods that are further connected with a directional joint of two front wheels respectively. When a steering wheel is turned left or right, the gear shaft is to be rotated to simultaneously drive the sector gear and the gear shaft to turn around, so that the displacement plate, the directional pull rods, the directional joints and the front wheels can be concurrently driven to undertake an angular displacement for changing a car's direction. Thus, the driving mechanism of the invention has a relatively small size, with cost lowered as well.

Abstract: A safety device for the throttle operation includes a shaft, a linking plate having an end connected and moving with the shaft and another end provided with an projecting bent wing, a pulling plate having one end formed with a shaft hole for combining with the shaft and located at a side of the bent wing and another end resting on an end surface of the bent wing and connected with a throttle line. The bent wing moves the throttle line to move the pulling plate for an angle for opening the throttle. The safety device further includes a contact switch for contacting the linking plate so an engine control system may be electrified by the contact switch to reduce its speed to a slow condition even if the throttle line is stuck immovable and unable to return to its original position after pulling open the throttle, keeping safe a vehicle.