TRANSMISSION DEVICE

• Main Authors: MIYOSHI KATSUNORI, OKUDA KOICHI, IMAI KEITA, YAMAMOTO MASASHI, OMURO KEISUKE, SASAKI KENJI
• Format: Patent
• Language: English; Japanese
• Published: 22.10.2015
• 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 improve productivity of a transmission device in comparison with a conventional one while securing excellent lubrication of a supporting portion of a pinion in a carrier.SOLUTION: A transmission device includes a planetary gear mechanism having a power transmission shaft 2, a cylindrical shaft member 3 and a carrier. An in-shaft oil passage 21 is formed on the power transmission shaft 2. An inner diameter region IP of the carrier and the cylindrical shaft member 3 are spline-connected, an inner opening portion 55 of an induction oil passage 51 is formed on a non-spline region NP of the inner diameter region IP, and an object race member 61 of a thrust bearing 60 is disposed while kept into contact with the carrier. An innermost diameter-side position of the non-spline region NP is positioned radially outside with respect to an outermost diameter-side position of a spline engagement portion A, and an oil receiving portion OR is formed by the cylindrical shaft member 3, the non-spline region NP, and the object race member 61. 【課題】キャリヤにおけるピニオンの支持部の良好な潤滑を確保しながら、従来に比べて生産性を向上させる。【解決手段】変速装置は、伝動軸２と筒状軸部材３とキャリヤを有する遊星歯車機構とを備える。伝動軸２に軸内油路２１が形成されている。キャリヤの内径部位ＩＰと筒状軸部材３とがスプライン連結され、内径部位ＩＰのうちの非スプライン部位ＮＰに誘導油路５１の内側開口部５５が形成され、スラスト軸受６０の対象レース部材６１がキャリヤに当接して配置されている。非スプライン部位ＮＰの最内径側位置がスプライン係合部Ａの最外径側位置よりも径方向外側に位置しているとともに、筒状軸部材３と非スプライン部位ＮＰと対象レース部材６１とにより油受け部ＯＲが形成されている。【選択図】図４