POWER TRANSMISSION DEVICE

• Main Authors: IGI TAISUKE, OBA HIROKAZU
• Format: Patent
• Language: English; Japanese
• Published: 02.04.2020
• Subjects: BLASTING; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; THERMAL INSULATION IN GENERAL; WEAPONS

To miniaturize a device as a whole in a power transmission device for axially transmitting rotation torque through rolling elements.SOLUTION: A reduction gear 1 includes: a plurality of rollers 4; an input member 10 (first member) having a plurality of first pockets 13 into which the plurality of rollers 4 are inserted; a pair of fixing members 5 (second members) disposed at axial both sides of the input member 10 and having a rolling element engagement groove 16 with which axial both ends of the plurality of rollers 4 are engaged; and a pair of output members 31, 32 (third members) respectively disposed axially between the input member 10 and the pair of fixing members 5, and having a plurality of second pockets 17 to which the plurality of rollers 4 are inserted. The plurality of first pockets 13 are formed along a circle having a center of curvature eccentric from a center of rotation X. The rolling element engagement groove 16 is formed along wavy curves alternately crossing a pitch circle having the center of curvature on the center of rotation X.SELECTED DRAWING: Figure 1 【課題】転動体を介して軸方向に回転トルクを伝達する動力伝達装置において、装置全体の小型化を図る。【解決手段】減速装置１は、複数のローラ４と、複数のローラ４が挿通された複数の第１ポケット１３を有する入力部材１０（第１部材）と、入力部材１０の軸方向両側に設けられ、複数のローラ４の軸方向両端が係合する転動体係合溝１６を有する一対の固定部材５（第２部材）と、入力部材１０と一対の固定部材５との軸方向間にそれぞれ設けられ、複数のローラ４が挿通された複数の第２ポケット１７を有する一対の出力部材３１，３２（第３部材）とを備える。複数の第１ポケット１３は、回転中心Ｘから偏心した曲率中心を有する円に沿って形成される。転動体係合溝１６は、回転中心Ｘ上に曲率中心を有するピッチ円に対して交互に交差する波状曲線に沿って形成される。【選択図】図１