TW252923B - Driving device for toys - Google Patents

Abstract

A driving device for toys, which mainly comprises: battery, a motor driven by the battery, a driving device which transmits the motor power to the operation element to drive the operation element and comprises sun gear and planet gear and drum wheel, in which the above mentioned gear mechanism comprises a sun gear (33c) and planet gears (33d) which revolves around the sun gear (33c); which is characterized in that: the planet gears are axially supported and installed coaxial to the sun gear in a state that idle rotation is possible, through revolution of the planet gears (33d) to rotate the drum (37), the surrounding of the revolving drum (37) is installed with claws (37a) (37b) which shifts correspondingly to the axial direction of the shaft as well as to the circumferential direction, the surrounding of revolving drum (37) is installed with a speed change rod (73) capable of connecting one of the claws (37a) (37b) on its one end so that when one end of the speed change rod connects with one of the claws (37a) (37b) the planet gear (33d) will mesh with the next section gear (33e), and when one end of the speed change rod (73) connects with the other one of the claws (37a) (37b) the planet gear (33d) will release its connection with the next section gear (33e), the speed change rod (73) is connected with a speed change cam (72) which is driven by the motor to activate the speed change rod (73) to control the meshing or releasing between the planet gear (33d) and the next stage gear (33e), in which the speed change cam (72) comprises multiple stages in the axial direction of the shaft (41) or wheel contour in shape and rotates in one body with the shaft (41) while capable of moving in the axial direction of the shaft (41) so as to control the speed change rod (73) through displacement.