| 摘要 |
PROBLEM TO BE SOLVED: To realize an excellent durable structure which can properly maintain the contact condition of the circumference face of a power roller 8b with each disk irrespective of change in elastic deformation amount of each constituting member by displacing the power roller 8b in the axial direction of each disk and is constituted at low cost easily. SOLUTION: The power roller 8b is swingably and displaceably and engaged to a support beam part 34 of a trunnion 9b. The traction force added to the power roller 8b is transmitted to the trunnion 9b based on the engagement of the peripheral face 46 of the outer ring 37 of the thrust ball bearing 36 with the level stepped face 45 formed on this trunnion 9b. The traction force support face 47, which a curvature radius is larger than other part, is formed on the opposite part to this stepped face 45 in this outer peripheral face 46. COPYRIGHT: (C)2009,JPO&INPIT
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