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Patent Searching and Data


Title:
PLANETARY ROLLER TYPE FRICTION TRANSMISSION GEAR
Document Type and Number:
Japanese Patent JP2019032022
Kind Code:
A
Abstract:
To provide a planetary roller type friction transmission gear capable of preventing conduction efficiency from reducing while smoothly rotating the planetary roller held by a carrier pocket.SOLUTION: A planetary roller type friction transmission gear 100 comprises: a high-speed rotation side sun roller 112; an outer ring 120 fixed concentrically to the sun roller; a planetary roller 122 which rolls in a frictional contact state between an outer peripheral surface 126 of the sun roller and an inner peripheral surface 128 of the outer ring; and a low-speed rotation side carrier 118 for holding the planetary roller. The carrier includes: a pedestal 130 centering on the axis of the sun roller; basal parts 132, 134, and 136 protrude from the pedestal between the planetary rollers; and pockets 138, 140, and 142 that are formed between adjacent basal parts and rotatably hold the planetary rollers. A gap 154 between a pocket internal surface 144 and a planetary roller exterior surface 146 decreases toward a contact part 150 between the internal surface and the exterior surface from upstream of the rotation of the planetary roller.SELECTED DRAWING: Figure 3

Inventors:
野口 猛
Application Number:
JP2017153036A
Publication Date:
February 28, 2019
Filing Date:
August 08, 2017
Export Citation:
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Assignee:
株式会社不二越
International Classes:
F16H13/08
Attorney, Agent or Firm:
飛田 高介
鈴木 大介
特許業務法人 アクア特許事務所