| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a structure facilitating component fabrication, component management and assembling work, facilitating achievement of cost reduction, and allowing stabilization of a speed change operation. <P>SOLUTION: An outer ring 30a constituting a thrust ball bearing 29a is swingably and displaceably supported to a support beam portion 27a of a trunnion 10d. A displacement of a detection object surface 38 provided in a detection object bracket 35 connected and fixed to the outer ring 30a is measured by a sensor 42, thereby allowing a displacement amount of the outer ring 30a to be measured. Feedback control is performed on a speed change ratio based on a measurement signal of the sensor 42. A displacement of a power roller 9a can be measured without being affected by a space present between the trunnion 10d and the outer ring 30a, and consequently stabilization of a speed change operation can be achieved. <P>COPYRIGHT: (C)2013,JPO&INPIT |
