Electric yo-yo toy

Abstract

The present invention provides an electric yo-yo toy which is easily handled even by a young child and a beginner by allocating electric parts and gear mechanism to both of rotors in a balanced manner so that weights of both of the rotors are almost the same. An electric yo-yo toy has a pair of rotors, a main shaft provided between the centers of the pair of rotors, and a rotary shaft rotatably provided for the main shaft and around which a string member is wound. The rotor is provided with a drive motor, a gear mechanism for transmitting rotation of the drive motor to the rotary shaft, and a detecting device for detecting rotation of the rotor. The other rotor is provided with power supplies. The main shaft is provided with a conducting unit for electrically connecting the drive motor and the detecting device of the rotor and the power supplies of the other rotor.

1 . An electric yo-yo toy comprising:
 a pair of rotors;   a main shaft provided between centers of the pair of rotors; and   a rotary shaft swingably provided for the main shaft and around which a string member is wound,   wherein one of the rotors is provided with a drive motor, a gear mechanism for transmitting rotation of the drive motor to the rotary shaft, and a detecting device for detecting rotation of the rotors,   the other rotor is provided with a power source, and   the main shaft is provided with a conducting unit that electrically connects the drive motor and the detecting device of one of the rotors and the power source of the other rotor.   
     
     
         2 . The electric yo-yo toy according to  claim 1 , wherein the conducting unit comprises
 an inner conduction shaft provided on the inside of the main shaft and   an outer conduction shaft provided on the outside of the main shaft.   
     
     
         3 . The electric yo-yo toy according to  claim 2 , wherein the outer conduction shaft is formed in a cylindrical shape and provided on the outside of the main shaft, and
 a rotary shaft is swingably provided for the outer conduction shaft.   
     
     
         4 . The electric yo-yo toy according to  claim 2 , wherein the inner conduction shaft is a fixing shaft which is inserted in the main shaft and which fixes the pair of rotors. 
     
     
         5 . The electric yo-yo toy according to  claim 1 , wherein the detecting device comprises:
 a first stationary contact plate:   a second stationary contact plate provided apart from the first stationary contact plate;   a rolling contact that rolls between a contact position where it comes into contact with the first and second stationary contact plates almost simultaneously and a non-contact position where it does not come into contact with at least one of the first and second stationary contact plates; and   a magnet which holds the rolling contact in the non-contact position, and   the rolling contact rolls against magnetic force of the magnet by inertia force generated by rotation of the rotors and comes into contact with the first and second stationary contact plates almost simultaneously to drive the drive motor.   
     
     
         6 . The electric yo-yo toy according to  claim 5 , wherein the second stationary contact plates are provided on both sides of the first stationary contact plate,
 when the rolling contact comes into contact with the first stationary contact plate and one of the second stationary contact plates, the drive motor drives in one direction, and when the rolling contact comes into contact with the first stationary contact plate and the other second stationary contact plate, the drive motor drives in the other direction.   
     
     
         7 . The electric yo-yo toy according to  claim 1 , wherein the detecting device comprises:
 an oscillating contact whose one end is pivoted and capable of oscillating like a pendulum:   a stationary contact plate provided apart from the oscillating contact and coming into contact when the oscillating contact oscillates; and   a magnet which holds the oscillating contact in a position of non-contact with the stationary contact plate, and   the oscillating contact oscillates against magnetic force of the magnet by inertia force generated by rotation of the rotors and comes into contact with the stationary contact plate to drive the drive motor.   
     
     
         8 . The electric yo-yo toy according to  claim 7 , wherein the stationary contact plates are provided on both sides of the oscillating contact,
 when the oscillating contact comes into contact with one of the stationary contact plates, the drive motor drives in one direction, and when the oscillating contact comes into contact with the other stationary contact plate, the drive motor drives in the other direction.   
     
     
         9 . The electric yo-yo toy according to  claim 1 , further comprising a pair of detecting devices is provided so as to face one of the rotors and, when both of the detecting devices detect rotation, the drive motor is driven.