Rotational force transmitting device

1. A rotational force transmitting device comprising:

an inertia wheel 100 connected to an output gear 22 rotating engagedly with a driving motor 11 and rotating by receiving the rotational force of the driving motor 11 ;

a spindle 200 coupled freely rotatable to the center of the front surface of the inertia wheel 100 ;

a power transmitting eccentric body 210 extended vertically with respect to the rotary shaft of the spindle 200 from one side of the spindle 20 ;

an insert pin 300 inserted into a guide hole 110 formed passed through the front and rear surfaces of the inertia wheel 100 ;

a position restoring spring 320 inserted into the guide hole 110 , for elastically supporting the insert in 300 in a backward direction; and

a balance weight 400 coupled rotatable to the rear surface of the inertia wheel 100 , for supporting the rear end periphery of the insert pin 300 , the balance weight 400 rotating with the centrifugal force generated by the rotation of the inertia wheel 100 to push the insert pin 300 forward to allow the insert pin 300 and the power transmitting eccentric body 210 to be engaged with each other,

wherein the balance weight 400 is punched at the center portion thereof and has a general shape of “□”, “◯”, or “∩”, the balance weight 400 having a rear weight portion 410 formed protruded backward on one side supporting the rear end periphery of the insert pin 300 around a balance pin 430 as a rotary shaft thereof and a front weight portion 420 formed protruded forward on the other side thereof.

2. The rotational force transmitting device according to claim 1 , wherein the insert pin 300 has a first steel ball accommodating groove 310 formed along the outer peripheral surface thereof, and the inertia wheel 100 comprises: a spring hole 130 formed on the side surface thereof in such a manner as to communicate with the guide hole 110 , the spring hole 130 having a screw thread formed on a portion thereof; a steel ball 140 inserted into the spring hole 130 in such a manner as to be brought into contact with the outer periphery of the insert pin 300 ; a tension spring 150 inserted into the spring hole 130 , for elastically supporting the steel ball 140 against one side portion thereof; and a tension adjusting pin 160 fastened to the screw thread formed on the spring hole 130 , for supporting the other side end portion of the tension spring 150 .

3. The rotational force transmitting device according to claim 1 , wherein the insert pin 300 has a first steel ball accommodating groove 310 and a second steel ball accommodating groove 310 formed spaced apart from each other by a given distance along the outer peripheral surface thereof, and the inertia wheel 100 comprises: a spring hole 130 formed on the side surface thereof in such a manner as to communicate with the guide hole 110 , the spring hole 130 having a screw thread formed on a portion thereof; a steel ball 140 inserted into the spring hole 130 in such a manner as to be brought into contact with the outer periphery of the insert pin 300 ; a tension spring 150 inserted into the spring hole 130 , for elastically supporting the steel ball 140 against one side portion thereof; and a tension adjusting pin 160 fastened to the screw thread formed on the spring hole 130 , for supporting the other side end portion of the tension spring 150 , whereby the steel ball 140 is engaged with the first steel ball accommodating groove 310 of the insert pin 300 when the insert pin 300 pushes backward, and if the insert pin 300 pushes forward by means of the centrifugal force of the balance weight 400 to allow the insert pin 300 to be engaged with the concave groove 211 of the power transmitting eccentric body 210 , the steel ball 140 is engaged with the second steel ball accommodating groove 315 .

4. The rotational force transmitting device according to claim 1 , further comprising:

bearings 230 fitted to the spindle 200 coupled to the center of the front surface of the inertia wheel 100 ; and

a circular plate spring 220 fitted to the spindle 200 together with the bearings 230 , for absorbing the vibration generated forward and backward.

5. A rotational force transmitting device comprising:

an inertia wheel 100 connected to an output gear 22 rotating engagedly with a driving motor 11 and rotating by receiving the rotational force of the driving motor 11 ;

a spindle 200 coupled freely rotatable to the center of the front surface of the inertia wheel 100 ;

a power transmitting eccentric body 210 extended vertically with respect to the rotary shaft of the spindle 200 from one side of the spindle 20 ;

an insert pin 300 inserted into a guide hole 110 formed passed through the front and rear surfaces of the inertia wheel 100 ;

a position restoring spring 320 inserted into the guide hole 110 , for elastically supporting the insert pin 300 in a backward direction; and

a balance weight 400 coupled rotatably to the rear surface of the inertia wheel 100 , for supporting the rear end periphery of the insert pin 300 , the balance weight 400 rotating with the centrifugal force generated by the rotation of the inertia wheel 100 to push the insert pin 300 forward to allow the insert pin 300 and the power transmitting eccentric body 210 to be engaged with each other,

further comprising a shock absorbing cap 500 taking a generally cylindrical shape in such a manner as to be inserted into a shock absorbing cap coupling groove 120 formed on the rear surface of the inertia wheel 100 , the shock absorbing cap 500 comprising:

an output gear coupling groove 510 formed on the rear end surface thereof in such a manner as to be coupled to the rotary shaft of the output gear 22 ;

spring accommodating holes 520 formed passed through the outer peripheral surface thereof in such a manner as to face each other;

shock absorbing cap springs 530 mounted into the spring accommodating holes 520 ; and

friction pads 540 coupled to both side end portions of the shock absorbing cap springs 530 in such a manner as to be brought into close contact with the inner peripheral surface of the shock absorbing cap coupling groove 120 of the inertia wheel 100 by means of the elastic forces of the shock absorbing cap springs 530 in the state where the shock absorbing cap 500 is inserted into the shock absorbing cap coupling groove 120 of the inertia wheel 100 .

6. The rotational force transmitting device according to claim 5 , wherein the shock absorbing cap 500 has the two spring accommodating holes 520 formed spaced apart from each other in such a manner as to be perpendicular to each other, and the shock absorbing cap springs 530 and the friction pads 540 are mounted into the two spring accommodating holes 520 .

7. The rotational force transmitting device according to claim 6 , wherein the shock absorbing cap coupling groove 120 of the inertia wheel 100 has a square shape rounded at corners thereof, so that a linear surface 121 and a curved surface 122 are repeatedly connected to each other.

8. The rotational force transmitting device according to claim 6 , wherein the insert pin 300 has a first steel ball accommodating groove 310 formed along the outer peripheral surface thereof, and the inertia wheel 100 comprises: a spring hole 130 formed on the side surface thereof in such a manner as to communicate with the guide hole 110 , the spring hole 130 having a screw thread formed on a portion thereof; a steel ball 140 inserted into the spring hole 130 in such a manner as to be brought into contact with the outer periphery of the insert pin 300 ; a tension spring 150 inserted into the spring hole 130 , for elastically supporting the steel ball 140 against one side portion thereof; and a tension adjusting pin 160 fastened to the screw thread formed on the spring hole 130 , for supporting the other side end portion of the tension spring 150 .

9. The rotational force transmitting device according to claim 6 , wherein the insert pin 300 has a first steel ball accommodating groove 310 and a second steel ball accommodating groove 310 formed spaced apart from each other by a given distance along the outer peripheral surface thereof, and the inertia wheel 100 comprises: a spring hole 130 formed on the side surface thereof in such a manner as to communicate with the guide hole 110 , the spring hole 130 having a screw thread formed on a portion thereof; a steel ball 140 inserted into the spring hole 130 in such a manner as to be brought into contact with the outer periphery of the insert pin 300 ; a tension spring 150 inserted into the spring hole 130 , for elastically supporting the steel ball 140 against one side portion thereof; and a tension adjusting pin 160 fastened to the screw thread formed on the spring hole 130 , for supporting the other side end portion of the tension spring 150 , whereby the steel ball 140 is engaged with the first steel ball accommodating groove 310 of the insert pin 300 when the insert pin 300 pushes backward, and if the insert pin 300 pushes forward by means of the centrifugal force of the balance weight 400 to allow the insert pin 300 to be engaged with the concave groove 211 of the power transmitting eccentric body 210 , the steel ball 140 is engaged with the second steel ball accommodating groove 315 .

10. The rotational force transmitting device according to claim 6 , further comprising:

bearings 230 fitted to the spindle 200 coupled to the center of the front surface of the inertia wheel 100 ; and

a circular plate spring 220 fitted to the spindle 200 together with the bearings 230 , for absorbing the vibration generated forward and backward.

11. The rotational force transmitting device according to claim 5 , wherein the shock absorbing cap coupling groove 120 of the inertia wheel 100 has a square shape rounded at corners thereof, so that a linear surface 121 and a curved surface 122 are repeatedly connected to each other.

12. The rotational force transmitting device according to claim 5 , wherein the insert pin 300 has a first steel ball accommodating groove 310 formed along the outer peripheral surface thereof, and the inertia wheel 100 comprises: a spring hole 130 formed on the side surface thereof in such a manner as to communicate with the guide hole 110 , the spring hole 130 having a screw thread formed on a portion thereof; a steel ball 140 inserted into the spring hole 130 in such a manner as to be brought into contact with the outer periphery of the insert pin 300 ; a tension spring 150 inserted into the spring hole 130 , for elastically supporting the steel ball 140 against one side portion thereof; and a tension adjusting pin 160 fastened to the screw thread formed on the spring hole 130 , for supporting the other side end portion of the tension spring 150 .

13. The rotational force transmitting device according to claim 5 , wherein the insert pin 300 has a first steel ball accommodating groove 310 and a second steel ball accommodating groove 310 formed spaced apart from each other by a given distance along the outer peripheral surface thereof, and the inertia wheel 100 comprises: a spring hole 130 formed on the side surface thereof in such a manner as to communicate with the guide hole 110 , the spring hole 130 having a screw thread formed on a portion thereof; a steel ball 140 inserted into the spring hole 130 in such a manner as to be brought into contact with the outer periphery of the insert pin 300 ; a tension spring 150 inserted into the spring hole 130 , for elastically supporting the steel ball 140 against one side portion thereof; and a tension adjusting pin 160 fastened to the screw thread formed on the spring hole 130 , for supporting the other side end portion of the tension spring 150 , whereby the steel ball 140 is engaged with the first steel ball accommodating groove 310 of the insert pin 300 when the insert pin 300 pushes backward, and if the insert pin 300 pushes forward by means of the centrifugal force of the balance weight 400 to allow the insert pin 300 to be engaged with the concave groove 211 of the power transmitting eccentric body 210 , the steel ball 140 is engaged with the second steel ball accommodating groove 315 .

14. The rotational force transmitting device according to claim 5 , further comprising:

bearings 230 fitted to the spindle 200 coupled to the center of the front surface of the inertia wheel 100 ; and

a circular plate spring 220 fitted to the spindle 200 together with the bearings 230 , for absorbing the vibration generated forward and backward.

15. A rotational force transmitting device comprising:

an inertia wheel 100 connected to an output gear 22 rotating engagedly with a driving motor 11 and rotating by receiving the rotational force of the driving motor 11 ;

a spindle 200 coupled freely rotatable to the center of the front surface of the inertia wheel 100 ;

a power transmitting eccentric body 210 extended vertically with respect to the rotary shaft of the spindle 200 from one side of the spindle 20 ;

an insert pin 300 inserted into a guide hole 110 formed passed through the front and rear surfaces of the inertia wheel 100 ;

a position restoring spring 320 inserted into the guide hole 110 , for elastically supporting the insert in 300 in a backward direction; and

a balance weight 400 coupled rotatable to the rear surface of the inertia wheel 100 , for supporting the rear end periphery of the insert pin 300 , the balance weight 400 rotating with the centrifugal force generated by the rotation of the inertia wheel 100 to push the insert pin 300 forward to allow the insert pin 300 and the power transmitting eccentric body 210 to be engaged with each other,

wherein the balance weight 400 is punched at the center portion thereof and has a general shape of “□”, “◯”, or “∩”, the balance weight 400 having a rear weight portion 410 formed protruded backward on one side supporting the rear end periphery of the insert pin 300 around a balance pin 430 as a rotary shaft thereof and a front weight Portion 420 formed protruded forward on the other side thereof,

wherein the insert pin 300 has a first steel ball accommodating groove 310 formed along the outer peripheral surface thereof, and the inertia wheel 100 comprises: a spring hole 130 formed on the side surface thereof in such a manner as to communicate with the guide hole 110 , the spring hole 130 having a screw thread formed on a portion thereof; a steel ball 140 inserted into the spring hole 130 in such a manner as to be brought into contact with the outer periphery of the insert pin 300 ; a tension spring 150 inserted into the spring hole 130 , for elastically supporting the steel ball 140 against one side portion thereof; and a tension adjusting pin 160 fastened to the screw thread formed on the spring hole 130 , for supporting the other side end portion of the tension spring 150 .

16. A rotational force transmitting device comprising:

an inertia wheel 100 connected to an output gear 22 rotating engagedly with a driving motor 11 and rotating by receiving the rotational force of the driving motor 11 ;

a spindle 200 coupled freely rotatable to the center of the front surface of the inertia wheel 100 ;

a power transmitting eccentric body 210 extended vertically with respect to the rotary shaft of the spindle 200 from one side of the spindle 20 ;

an insert pin 300 inserted into a guide hole 110 formed passed through the front and rear surfaces of the inertia wheel 100 ;

a position restoring spring 320 inserted into the guide hole 110 , for elastically supporting the insert pin 300 in a backward direction; and

a balance weight 400 coupled rotatable to the rear surface of the inertia wheel 100 , for supporting the rear end periphery of the insert pin 300 , the balance weight 400 rotating with the centrifugal force generated by the rotation of the inertia wheel 100 to push the insert pin 300 forward to allow the insert in 300 and the power transmitting eccentric body 210 to be engaged with each other,

wherein the insert pin 300 has a first steel ball accommodating groove 310 and a second steel ball accommodating groove 310 formed spaced apart from each other by a given distance along the outer peripheral surface thereof, and the inertia wheel 100 comprises: a spring hole 130 formed on the side surface thereof in such a manner as to communicate with the guide hole 110 , the spring hole 130 having a screw thread formed on a portion thereof; a steel ball 140 inserted into the spring hole 130 in such a manner as to be brought into contact with the outer periphery of the insert pin 300 ; a tension spring 150 inserted into the spring hole 130 , for elastically supporting the steel ball 140 against one side portion thereof; and a tension adjusting pin 160 fastened to the screw thread formed on the spring hole 130 , for supporting the other side end portion of the tension spring 150 , whereby the steel ball 140 is engaged with the first steel ball accommodating groove 310 of the insert pin 300 when the insert pin 300 pushes backward, and if the insert pin 300 pushes forward by means of the centrifugal force of the balance weight 400 to allow the insert pin 300 to be engaged with the concave groove 211 of the power transmitting eccentric body 210 , the steel ball 140 is engaged with the second steel ball accommodating groove 315 .

17. A rotational force transmitting device comprising:

an inertia wheel 100 connected to an output gear 22 rotating engagedly with a driving motor 11 and rotating by receiving the rotational force of the driving motor 11 ;

a spindle 200 coupled freely rotatable to the center of the front surface of the inertia wheel 100 ;

a power transmitting eccentric body 210 extended vertically with respect to the rotary shaft of the spindle 200 from one side of the spindle 20 ;

an insert pin 300 inserted into a guide hole 110 formed passed through the front and rear surfaces of the inertia wheel 100 ;

a position restoring spring 320 inserted into the guide hole 110 , for elastically supporting the insert in 300 in a backward direction; and

a balance weight 400 coupled rotatable to the rear surface of the inertia wheel 100 , for supporting the rear end periphery of the insert pin 300 , the balance weight 400 rotating with the centrifugal force generated by the rotation of the inertia wheel 100 to push the insert pin 300 forward to allow the insert pin 300 and the power transmitting eccentric body 210 to be engaged with each other,

further comprising:

bearings 230 fitted to the spindle 200 coupled to the center of the front surface of the inertia wheel 100 ; and

a circular plate spring 220 fitted to the spindle 200 together with the bearings 230 , for absorbing the vibration generated forward and backward.

18. A rotational force transmitting device comprising:

an inertia wheel 100 connected to an output gear 22 rotating engagedly with a driving motor 11 and rotating by receiving the rotational force of the driving motor 11 ;

a spindle 200 coupled freely rotatable to the center of the front surface of the inertia wheel 100 ;

a power transmitting eccentric body 210 extended vertically with respect to the rotary shaft of the spindle 200 from one side of the spindle 20 ;

an insert pin 300 inserted into a guide hole 110 formed passed through the front and rear surfaces of the inertia wheel 100 ;

a position restoring spring 320 inserted into the guide hole 110 , for elastically supporting the insert pin 300 in a backward direction; and

a balance weight 400 coupled rotatable to the rear surface of the inertia wheel 100 , for supporting the rear end periphery of the insert pin 300 , the balance weight 400 rotating with the centrifugal force generated by the rotation of the inertia wheel 100 to push the insert pin 300 forward to allow the insert pin 300 and the power transmitting eccentric body 210 to be engaged with each other,

further comprising a rubber pad type shock absorber 600 disposed between the inertia wheel 100 and the output gear 22 to transmit the rotational force of the output gear 22 to the inertia wheel 100 and to absorb the external shock transmitted through the inertia wheel 100 , the rubber pad type shock absorber 600 comprising:

a rotary plate 610 having an output gear coupling groove 611 formed on the rear surface thereof and engaged rotatably with the output gear 22 and a rotational force coupling protrusion 612 protruded from the front surface thereof;

a shock absorbing rubber pad 620 engaged rotatably with the rotational force coupling protrusion 612 of the rotary plate 610 ; and

a shock absorbing drum 630 having a rubber pad accommodating portion 631 formed on the rear surface thereof to accommodate the shock absorbing rubber pad 620 thereinto and a first inertia wheel coupling protrusion 632 protruded from the front surface thereof,

wherein as the shock absorbing rubber pad 620 rotating engagedly with the rotary plate 610 is open outwardly by means of the centrifugal force, the shock absorbing rubber pad 620 is brought into close contact with the inner peripheral surface of the rubber pad accommodating portion 631 , thus transmitting the rotational force of the rotary plate 610 to the shock absorbing drum 630 .

19. A rotational force transmitting device comprising:

an inertia wheel 100 connected to an output gear 22 rotating engagedly with a driving motor 11 and rotating by receiving the rotational force of the driving motor 11 ;

a spindle 200 coupled freely rotatable to the center of the front surface of the inertia wheel 100 ;

a power transmitting eccentric body 210 extended vertically with respect to the rotary shaft of the spindle 200 from one side of the spindle 20 ;

an insert pin 300 inserted into a guide hole 110 formed Passed through the front and rear surfaces of the inertia wheel 100 ;

a position restoring spring 320 inserted into the guide hole 110 , for elastically supporting the insert pin 300 in a backward direction; and

a balance weight 400 coupled rotatable to the rear surface of the inertia wheel 100 , for supporting the rear end periphery of the insert pin 300 , the balance weight 400 rotating with the centrifugal force generated by the rotation of the inertia wheel 100 to push the insert pin 300 forward to allow the insert pin 300 and the power transmitting eccentric body 210 to be engaged with each other,

further comprising a spring type shock absorber 700 disposed between the inertia wheel 100 and the output gear 22 to transmit the rotational force of the output gear 22 to the inertia wheel 100 and to absorb the external shock transmitted through the inertia wheel 100 , the spring type shock absorber 700 comprising:

a shock absorbing spring 710 fitted to the output gear shaft 33 protruded long from the front surface of the output gear 22 ;

a hitting absorbing body 720 having a spring accommodating portion 721 formed on the rear surface thereof and a second inertia wheel coupling protrusion 722 formed on the front surface thereof in such a manner as to be coupled to the inertia wheel 100 ; and

a fastening bolt 730 fastened to the front end surface of the output gear shaft 33 passed through the interior of the hitting absorbing body 720 to couple the hitting absorbing body 720 and the output gear 22 ,

wherein the shock absorbing spring 710 is fitted to the output gear shaft 33 and compressed inside the hitting absorbing body 720 in such a manner as to elastically support the hitting absorbing body 720 , thus transmitting the rotational force of the output gear 22 to the hitting absorbing body 720 .

20. The rotational force transmitting device according to claim 19 , wherein the spring type shock absorber 700 further comprises:

shock absorbing rubber 740 fitted to the output gear shaft 33 and disposed between the shock absorbing spring 710 and the output gear 22 ;

a thrust bearing 750 fitted to the output gear shaft 33 and disposed between the inner peripheral surface of the hitting absorbing body 720 and the shock absorbing spring 710 ; and

a fixing cap 760 mounted between the front surface of the hitting absorbing body 720 and the fastening bolt 730 .