REDUCTION GEAR

• Main Author: KOMORI HIROSHI
• Format: Patent
• Language: English; Japanese
• Published: 19.11.2015
• 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

PROBLEM TO BE SOLVED: To miniaturize a reduction gear while maintaining a high torque ratio.SOLUTION: The reduction gear comprises a plurality of driven gears 11 arrayed along the circumferential direction of an input side shaft. Each of the plurality of driven gears 11 has inner side parts 14, 16 that are parts on the side of an output side shaft 20, and outer side parts 15, 17 that are parts on the side outer than the inner side parts 14, 16 and having gear parts formed on the outer circumference thereof. Two of the driven gears 11 which are adjacent to the circumferential direction of the input side shaft are provided such that at least a portion of each of the inner side parts 14, 16 overlap each other in a direction in which the output side shaft 20 extends, and each of the outer side parts 15, 17 is provided such that the outer side parts overlap each other seen from a direction in which the output side shaft 20 extends, and do not overlap each other seen from a direction perpendicular to the direction in which the output side shaft 20 extends. 【課題】高いトルク比を維持しつつ、減速装置を小型化する。【解決手段】減速装置では、入力側軸の周方向に沿って複数の従動側ギア１１が配列されている。複数の従動側ギア１１は、それぞれ、出力側軸２０側の部分である内側部１４，１６、及び、内側部１４，１６よりも外側の部分であって外周に歯部が形成された外側部１５，１７、を有している。入力側軸の周方向に隣接する２つの従動側ギア１１は、各内側部１４，１６の少なくとも一部が出力側軸２０の延びる方向において互いに重なるように設けられるとともに、各外側部１５，１７が、出力側軸２０の延びる方向から視て互いに重なるように、且つ、出力側軸２０の延びる方向に垂直な方向から視て互いに重ならないように設けられている。【選択図】図３