Title:
FRICTION ROLLER TYPE SPEED REDUCER
Document Type and Number:
Japanese Patent JP2016153688
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a friction roller type speed reducer in which intermediate rollers can always be followed stably to a resilient deformation of a ring roller or a sun roller and the like without being dependent upon an operating condition of the speed reducer.SOLUTION: A frictional roller type speed reducer comprises a sun roller 15, ring rollers 17, a plurality of intermediate rollers 19 and a loading cam mechanism. The intermediate rollers 19 comprise an auto-rotation shaft 31, a roller main body 83 having a through-pass hole 81 formed at a core part through which the auto-rotation shaft 31 passes and its outer peripheral surface contacted in rolling with the sun roller 15 and the ring rollers 17, and a roller bearing 22 arranged between the auto-rotation shaft 31 and the through-pass hole 81 of the roller main body 83. The roller bearing 22 supports the roller main body 83 movably along the auto-rotation shaft 31 and rotatably around the auto-rotation shaft 31 by a plurality of balls 87 present between the auto-rotation shaft 31 and the through-pass hole 81 of the roller main body 83.SELECTED DRAWING: Figure 2
Inventors:
YOSHIOKA HIROYASU
KAWAHARA HIROSHI
IHARA HIROTAKA
KAWAHARA HIROSHI
IHARA HIROTAKA
Application Number:
JP2015203766A
Publication Date:
August 25, 2016
Filing Date:
October 15, 2015
Export Citation:
Assignee:
NSK LTD
International Classes:
F16H13/04; F16C19/18; F16C33/64
Attorney, Agent or Firm:
Patent business corporation glory patent office
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