| 摘要 |
<p>PURPOSE:To increase the rotating speed of a loading ring by transmitting the revolution of a driving motor via a cam gear, arm gear and driving gear to a loading ring. CONSTITUTION:The loading mechanism contains the cam gear 12, arm gear 13 and driving gear 14 as elements for increasing the rotating speed of the loading ring 7. The cam gear 12 has the 1st and 2nd cam grooves 12a, 12b and is so constituted as to be rotated by the driving force transmitted thereto from the driving motor 15. The arm gear 13 has the 1st pin 13a to be inserted into the 1st cam groove 12a of the cam gear 12 and is rotated by the cooperative action of the 1st pin 13a and the 1st cam groove 12a when the gear 12 rotates. The arm gear 13 is formed with teeth 13b on the outside surface of the top end part positioned apart from the turning fulcrum 20 thereof. The driving gear 14 is meshed with the teeth 13b and is thereby rotated when the gear 13 rotates. The rotation is transmitted via a gear train consisting of the gears 14, 21, 7a to the ring 7.</p> |
