SUPPORTING STRUCTURE FOR PLANETARY GEAR

• Main Authors: KAWAI HIROMITSU, FUKAMI SATOYUKI
• Format: Patent
• Language: English; Japanese
• Published: 23.03.2017
• Subjects: BEARINGS; BLASTING; ELEMENTS OR CRANKSHAFT MECHANISMS; ENGINEERING ELEMENTS AND UNITS; FLEXIBLE SHAFTS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; ROTARY BODIES OTHER THAN GEARING ELEMENTS; SHAFTS; THERMAL INSULATION IN GENERAL; WEAPONS

PROBLEM TO BE SOLVED: To extend a life without making any complex assembly work for a needle roller with a cage.SOLUTION: A cage 14 of a needle roller with a cage has a large width B in respect to a diameter D, column parts 18 of the cage have roller stops 18a at an axial central part that is an inner diameter side rather than a roller pitch circle diameter PCD, both axial ends have roller stoppers 18b at an outer diameter side rather than the roller pitch circle diameter PCD, the inner diameter side roller stops 18a and the outer diameter side roller stops 18b are continuous through a slant part 18c, the slant part 18c is formed with first releases 22 so as to avoid an interference with the needle roller 12, a rectangular pocket 20 is formed between the adjoining column parts 18, four corners of the pocket 20 are formed with second releases 24, the second releases 24 extend in an axial direction of the cage from a position where a short side of the pocket 20 is extended in a peripheral direction up to outer ends of the roller stops 18b at the outer diameter side.SELECTED DRAWING: Figure 1 【課題】保持器付き針状ころの組立作業を複雑にすることなく寿命延長を図る。【解決手段】保持器付き針状ころの保持器１４は径Ｄに対して幅Ｂを大きくし、保持器の柱部１８は、軸方向の中央部にころピッチ円径ＰＣＤよりも内径側のころ止め１８ａを有し、軸方向の両端部にころピッチ円径ＰＣＤよりも外径側のころ止め１８ｂを有し、内径側のころ止め１８ａと外径側のころ止め１８ｂは斜行部１８ｃを介して連続し、斜行部１８ｃに針状ころ１２との干渉を避けるための第一のぬすみ２２が形成してあり、隣り合った柱部１８間に矩形状のポケット２０が形成され、ポケット２０の四隅に第二のぬすみ２４が形成され、第二のぬすみ２４はポケット２０の短辺を円周方向に延長した位置から外径側のころ止め１８ｂの外端まで、保持器軸方向に延在している。【選択図】図１