PLANETARY GEAR MECHANISM

• Main Authors: TEJIMA TOKUJI, OMOTE KENJI, MURATA SOHEI, ISHII TOSHIYUKI, NAKAJIMA YOSHITAKA
• Format: Patent
• Language: English; Japanese
• Published: 10.11.2016
• Subjects: BLASTING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MACHINE TOOLS; MECHANICAL ENGINEERING; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; THERMAL INSULATION IN GENERAL; TRANSPORTING; WEAPONS; WELDING; WORKING BY LASER BEAM

PROBLEM TO BE SOLVED: To provide a planetary gear mechanism which achieves reduction of manufacturing costs and can efficiently supply an oil to an oil passage in a pinion shaft.SOLUTION: A first member 10 includes: a first joint part 11 joined to an outer peripheral surface of a flange part 92; and a first shaft support part 12 which supports a pinion shaft 30 at one side in an axial direction L with respect to a pinon gear 5. The second member 20 includes: a second joint part 21 joined to the first member 10; and a second shaft support part 22 which supports the pinion shaft 30 at the other side in the axial direction L with respect to the pinion gear 5. A first oil passage 41 which is formed in the flange part 92 and extends in a radial direction R and a second oil passage 42 formed in the pinion shaft 30 communicate through a third oil passage 43 formed in an interior part of the first member 10. The first oil passage 41 and the third oil passage 43 are connected on a joint surface between the outer peripheral surface of the flange part 92 and the first joint part 11.SELECTED DRAWING: Figure 1 【課題】製造コストの低減を図ることが可能であると共に、ピニオン軸の内部の油路に対して油を効率良く供給することが可能な遊星歯車機構を実現する。【解決手段】第一部材１０は、フランジ部９２の外周面に接合される第一接合部１１と、ピニオンギヤ５に対して軸方向Ｌの一方側においてピニオン軸３０を支持する第一軸支持部１２とを備える。第二部材２０は、第一部材１０に接合される第二接合部２１と、ピニオンギヤ５に対して軸方向Ｌの他方側においてピニオン軸３０を支持する第二軸支持部２２とを備える。フランジ部９２の内部に形成されて径方向Ｒに延びる第一油路４１と、ピニオン軸３０の内部に形成された第二油路４２とが、第一部材１０の内部に形成された第三油路４３を介して連通しており、第一油路４１と第三油路４３とは、フランジ部９２の外周面と第一接合部１１との接合面において接続されている。【選択図】図１