PROBLEM TO BE SOLVED: To provide an automatic gear comprising a finite gear and a hydraulic infinite gear, capable of being made compact.SOLUTION: A hydraulic pump drive gear 22 is provided on an input shaft 21 on the closest position to an engine 2 in an axial direction of the input shaft 21. A hydraulic motor driven gear 32 is provided on a counter shaft 30 and on a position closer to the engine 2 than to driven gears 33, 34, 35 in an axial direction of the counter shaft 30. Between the driven gear 33 for three speeds, the driven gear 34 for four speeds, the driven gear 35 for five speeds, and the hydraulic motor driven gear 32, a synchronization engagement device 48 for connecting selectively, one of any of the plural steps of driven gears, and the hydraulic motor driven gear 32 to the counter shaft 30 is provided. A hydraulic pump 52 and a hydraulic motor 53 are arranged on an outer peripheral side of the synchronization engagement device 48. The gear pair having the largest change gear ratio, out of the plural steps of gear pairs, is arranged on the engine 2 side. The hydraulic pump 52 and the hydraulic motor 53 are arranged so as to be adjacent in a radial or a peripheral direction.SELECTED DRAWING: Figure 4
【課題】有段変速装置と油圧式無段変速装置とを備え、小型化できる自動変速装置を提供すること。【解決手段】油圧ポンプ駆動ギヤ22は、入力軸21に、入力軸21の軸方向でエンジン2に最も近い位置に配置される。油圧モータ従動ギヤ32は、カウンタ軸30に、カウンタ軸30の軸方向で従動ギヤ33、34、35よりもエンジン2に近い位置に配置される。3速用従動ギヤ33、4速用従動ギヤ34、5速用従動ギヤ35と油圧モータ従動ギヤ32との間に、これらの複数段の従動ギヤの何れかと油圧モータ従動ギヤ32との一方を選択的にカウンタ軸30と連結する同期噛み合い装置48が配置される。油圧ポンプ52および油圧モータ53は、同期噛み合い装置48の外周側に配置される。複数段のギヤ対のうち最も変速比の大きいギヤ対を、エンジン2側に配置する。油圧ポンプ52と油圧モータ53を径方向または周方向に隣接して配置する。【選択図】図4
AUTOMATIC GEAR
自動変速装置
2017-04-20
Patent
Elektronische Ressource
Japanisch
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