Power transmission apparatus using planetary gear

Abstract

The present invention relates to a power transmission apparatus which includes a planetary gear set with a planetary carrier of which one side extending to form gear teeth, wherein rotating speed input from a driving power source is reduced and then input to one actuating means, rotating speed of a gear-shifting power source is input to another actuating means to achieve a plurality of gear shifts, generating power is obtained from an output shaft to store electricity to a storage battery, the stored electric energy is utilized as controlling energy for gear-shifting power so that a transmission input shaft can be easily controlled. The power transmission apparatus according to embodiments of the present invention includes an input shaft that has one end constantly connected to a driving power source to receive power from the driving power source, the input shaft having a driving gear fixed mounted thereon, a deceleration unit that is connected to the driving gear and reduces rotating speed of the input shaft, a planetary gear set that includes a first actuating means connected to the deceleration unit and receiving rotating speed of the deceleration unit, a second actuating means receiving power for gear shift, and a third actuating means generating output speed, a gear shift unit that is constantly connected to a gear-shifting power source to receive power for gear shift therefrom, the gear shift unit being coupled with the second actuating means to transfer the power for gear shift thereto; and an output shaft that is fixed to the third actuating means of the planetary gear set to transmit output speed, wherein a rotation axis of the second actuating means is perpendicular to a rotation axis of the deceleration unit, a torque control shaft is connected to the second actuating means to receive rotation force of the second actuating means through a power transferring means, a generator for generating electricity is connected to the torque control shaft, and a storage battery for supplying electricity to the gear-shifting power source is connected to the generator.

1 - 14 . (canceled) 
     
     
         15 . An apparatus for a power transmission, comprising:
 a sun gear having gear teeth formed on an outer circumferential surface thereof, the sun gear being attached to a rotation shaft to receive power from the rotation shaft or to supply power to the rotation shaft;   a ring gear having gear teeth formed on an inner circumferential surface thereof, the ring gear encircling the sun gears and rotating reversely to rotation of the sun gear;   a plurality of pinion gears gear-engaged with the gear teeth on the outer circumferential surface of the sun gear and the gear teeth on the inner circumferential surface of the ring gear; and   a planet carrier on which the plurality of pinion gears are rotatably mounted, the planet carrier rotating depending on the rotation of the pinion gears,   wherein the planet carrier has an extended part on one side thereof extending in the direction of the rotation shaft in which the extended part has gear teeth that are obliquely formed on an outer circumferential surface thereof so that a worm gear or a helical gear is meshed thereto, and has second gear teeth further formed on the extended part so that a second helical gear or a second bevel gear is meshed thereto, thereby extracting part of rotation force of the planet carrier.   
     
     
         16 . The apparatus according to  claim 15 , wherein the ring gear has gear teeth formed on an outer circumferential surface thereof 
     
     
         17 . A power transmission apparatus, comprising:
 an input shaft having a driving gear formed on one side of an outer circumferential surface thereof;   a deceleration unit including a deceleration shaft, the deceleration shaft having a deceleration gear gear-engaged with the driving gear;   a ring gear having gear teeth formed on an outer circumferential surface thereof so as to be circumscribed with the deceleration gear;   a plurality of pinion gears circumscribed with gear teeth formed on an inner circumferential surface of the ring gear;   an output shaft having a sun gear mounted thereon, the sun gear being circumscribed with the plurality of pinion gears;   a planet carrier connected to center shafts of the pinion gears, the planet carrier rotating with reference to the output shaft depending to the rotation of the pinion gears;   an extended part extending from the planet carrier in the axis direction of the output shaft;   a worm gear and a drive helical gear formed on an outer circumferential surface of the extended part;   a transmission input shaft having, on its outer circumferential surface, a worm wheel coupled to the worm gear, the transmission input shaft being perpendicular to the output shaft so as to be rotated by a gear-shifting power source;   a control unit controlling rotating speed of the transmission input shaft;   a torque control shaft having a passive helical gear circumscribed with a driving helical gear of the extended part; and   torque reduction means being one or more selected from a group consisting of a generator, a deceleration device, and a hydraulic pump that are driven by the torque control shaft.   
     
     
         18 . The power transmission apparatus according to  claim 17 , wherein the deceleration unit comprises:
 a first deceleration gear formed on the deceleration shaft; and   a second deceleration gear formed on the deceleration shaft and apart from the first deceleration gear.   
     
     
         19 . The power transmission apparatus according to  claim 17 , wherein the first deceleration gear is connected with the driving gear, and the second deceleration gear is connected with the gear formed on the outer circumferential surface of the ring gear. 
     
     
         20 . A power transmission apparatus, comprising:
 an input shaft having a driving gear formed on one side of an outer circumferential surface thereof;   a deceleration shaft having a deceleration gear gear-engaged with the driving gear;   a driving bevel gear formed on one end of the deceleration shaft;   a ring gear having a passive bevel gear formed on one side thereof, the passive bevel gear being gear-engaged with the drive bevel gear;   a plurality of pinion gears circumscribed with gear teeth formed on inner circumferential surface of the ring gear;   an output shaft having a sun gear circumscribed with the plurality of pinion gears mounted thereon so that the out shaft rotates together with the sun gear;   a planet carrier connected to center shafts of the pinion gears, the planet carrier rotating depending on the plurality of pinion gears with reference to the output shaft;   an extended part extending from the planet carrier in an axis direction of the output shaft;   a worm gear and a drive bevel gear formed on an outer circumferential surface of the extended part;   a transmission input shaft having, on its outer circumferential surface, a worm wheel coupled to the worm gear, the transmission input shaft being perpendicular to the output shaft so as to be rotated by a gear-shifting power source;   a control unit controlling rotating speed of the transmission input shaft corresponding to rotating speed of the output shaft and operation of a brake;   a torque control shaft having a passive helical gear circumscribed with a driving helical gear of the extended part; and   a generator connected to the torque control shaft so as to generate electricity; and   a storage battery electrically connected to the generator and supplying electricity to the gear-shifting power source.   
     
     
         21 . The power transmission apparatus according to  claim 20 , wherein the passive bevel gear is formed on one side of the ring gear, and the extended part is extended from the other side of the ring gear. 
     
     
         22 . A power transmission apparatus, comprising:
 an input shaft having a driving gear on one side of an outer circumferential surface thereof;   a ring gear having outer gear teeth engaged with the driving gear;   a planet carrier having, on its circumference, a plurality of pinion gears engaged with inner gear teeth of the ring gear, the planet carrier having a worm wheel and second gear teeth in a form of bevel teeth formed in one end and the other end thereof, respectively;   a sun gear circumscribed with the plurality of pinion gears;   an output shaft connected to the sun gear and at least partially housed in the planet carrier;   a transmission input shaft having a worm gear engaged with the worm wheel; and   a torque control shaft having bevel teeth and engaged with the second gear teeth so as to be rotated.   
     
     
         23 . The power transmission apparatus according to  claim 22 , further comprising:
 a main motor rotating the input shaft; and   a control motor for controlling rotation operation of the transmission input shaft.   
     
     
         24 . The power transmission apparatus according to  claim 23 , further comprises:
 a motor control unit for controlling the main motor and the control motor; and   an accelerator and brake pedals electrically connected to the motor control unit,   wherein, when the accelerator is pressed down, the motor control unit increases rotating speed of the output shaft by increasing rotation number of the main motor and at the same time reducing rotation number of the control motor, and   
       when the brake pedal is pressed down, the motor control unit reduces rotating speed of the output shaft by reducing rotation number of the main motor and at the same time increasing rotation number of the control motor. 
     
     
         25 . The power transmission apparatus according to  claim 22 , comprising:
 a deceleration unit including a deceleration shaft, the deceleration shaft having a deceleration gear gear-engaged with the driving gear.   
     
     
         26 . The power transmission apparatus according to  claim 25 , wherein the deceleration unit includes a forward gear, a reverse gear, and a synchronizer mounted on the deceleration shaft. 
     
     
         27 . The power transmission apparatus according to  claim 26 , wherein the forward gear and the reverse gear are rotatably mounted to rotate relative to the deceleration shaft. 
     
     
         28 . The power transmission apparatus according to  claim 27 , wherein the synchronizer is operable to move in two different directions to selectively fix the forward gear or the reverse gear to the deceleration shaft. 
     
     
         29 . The power transmission apparatus according to  claim 28 , wherein when the synchronizer moves in a first direction of the two directions, the forward gear is fixed to the deceleration shaft to rotate with the deceleration shaft, and
 when the synchronizer moves in a second direction of the two directions, the reverse gear is fixed to the deceleration shaft to rotate with the deceleration shaft.   
     
     
         30 . The power transmission apparatus according to  claim 29 , wherein when the synchronizer is positioned between the forward and reverse gears, the synchronizer is in an idle state. 
     
     
         31 . The power transmission apparatus according to  claim 22 , comprising:
 an extended part extending from the planet carrier in an axis direction of the output shaft and engaged with the torque control shaft;   the transmission input shaft being perpendicular to the output shaft so as to be rotated by a gear-shifting power source;   a control unit controlling rotating speed of the transmission input shaft; and   a torque reducer comprising one or more of a generator, a deceleration device, and a hydraulic pump that are driven by the torque control shaft.   
     
     
         32 . The power transmission apparatus according to  claim 22 , wherein the planet carrier has an extended part on one side thereof extending in the direction of a rotation shaft, and the extended part has gear teeth that are obliquely formed on an outer circumferential surface thereof so that the worm gear or a helical gear is meshed thereto, and has second gear teeth further formed on the extended part so that a second helical gear or a second bevel gear is meshed thereto, thereby extracting part of rotation force of the planet carrier. 
     
     
         33 . The power transmission apparatus according to  claim 20 , wherein a forward gear, a reverse gear, and a synchronizer are mounted on the deceleration shaft. 
     
     
         34 . The power transmission apparatus according to  claim 33 , wherein the forward gear and the reverse gear are rotatably mounted to rotate relative to the deceleration shaft.