Driving mechanism of baby rocking chair

Abstract

A driving mechanism of baby rocking chair includes a transmission system having a transmission motor, a monitoring device, and a control circuit. When the rocking chair oscillates upward and approaches a predetermined set-up high point position that is affected by the gravitational force causing the slowing down of rotating speed, the monitoring device transmits a signal and provides the control circuit with the signal. As the rocking chair reaches the predetermined set-up high point position, the control circuit is capable of switching the direction of the rotation of the transmission motor. It is by this way of controlling the rotating shaft of oscillation of the rocking chair that the control circuit is capable of driving the rocking chair steadily.

1 . A driving mechanism of baby rocking chair mounted at a rocking chair framework for driving a rotating shaft of the rocking chair and generating rotation and counter-rotation with a predetermined angle; the driving mechanism comprises; 
 a transmission system, further comprises a DC (direct current) power supply, a transmission motor, and a speed-reducing gear train; by making use of the DC power supply to provide the transmission motor with electric energy, the transmission motor is capable of generating oscillation through the speed-reducing gear train to transmit to the rotating shaft of the rocking chair;    a monitoring device, for monitoring the rotating speed of the motor and outputting a signal representing the rotating speed of the motor; and    a control circuit, further comprises a signal-receiving interface, a memory unit, a motor's steering control circuit; by making use of the signal-receiving interface to receive the signal and make the memory unit store a set-up value beforehand, when the rotating speed representing by the signal attains the predetermined set-up value, the motor's steering control circuit can make the motor perform counter-rotation.    
   
   
       2 . The driving mechanism of baby rocking chair as claimed in  claim 1 , wherein the rotating shaft is the one that directly drives the rocking chair to perform oscillation.  
   
   
       3 . The driving mechanism of baby rocking chair as claimed in  claim 1 , wherein an oscillating arm connected between the rotating shaft and the rocking chair is the one that oscillates the rocking chair.  
   
   
       4 . The driving mechanism of baby rocking chair as claimed in  claim 1 , wherein the DC power supply is a storage battery.  
   
   
       5 . The driving mechanism of baby rocking chair as claimed in  claim 1 , wherein the rotating speed is reduced to the lowest when the rocking chair oscillates to the set-up highest position.  
   
   
       6 . The driving mechanism of baby rocking chair as claimed in  claim 5 , wherein the monitoring device is capable of monitoring the lowest rotating speed and providing the control circuit with signal for switching the rotational direction of the transmission motor.  
   
   
       7 . The driving mechanism of baby rocking chair as claimed in  claim 1 , wherein the monitoring device is a light interruptor.  
   
   
       8 . A driving mechanism of baby rocking chair mounted at a rocking chair framework for driving a rotating shaft of the rocking chair and generating rotation and counter-rotation with a predetermined angle; the driving mechanism comprises; 
 a transmission system, further comprises a power supply, a transmission motor, and a speed-reducing gear train; by making use of the power supply to provide the transmission motor with rotation output, the transmission motor is capable of generating oscillation through the speed-reducing gear train to transmit to the rotating shaft of the rocking chair; and the other end of the transmission shaft of the transmission motor connects a rotating disk having embossed facets at equal space or blades;    a monitoring device, for monitoring and calculating the rotation range of the rotating disk and outputting a signal representing the rotation range of the rotating disk; and    a control circuit, further comprises a signal-receiving interface, a memory unit, a motor's rotating speed control circuit; by making use of the signal-receiving interface to receive the signal and make the memory unit store a set-up value beforehand, when the rotation range representing by the signal attains the predetermined set-up value, the motor's rotating speed control circuit is capable of increasing or decreasing the current to increase or decrease the rotating speed of the transmission motor.    
   
   
       9 . The driving mechanism of baby rocking chair as claimed in  claim 8 , wherein the rotating speed of the rotating disk is the same as that of the transmission motor.  
   
   
       10 . The driving mechanism of baby rocking chair as claimed in  claim 8 , wherein the monitoring device is the one that is capable of monitoring the number of embossed facets or blades that have passed to generate a signal representing the rotation range of the motor.