JPH0248662U

JPH0248662U -

Info

Publication number: JPH0248662U
Application number: JP12853588U
Authority: JP
Priority date: 1988-09-30
Filing date: 1988-09-30
Publication date: 1990-04-04

Description

[Brief explanation of drawings]

第１図は、本考案の一実施例に係る自動変速機
ケースの潤滑油戻り油路の構造を内蔵するトラン
スアクスルケースの縦断面図、第２図は、第１図
の潤滑油戻り油路の構造を有するトランスアクス
ルケース後部の縦断面図、第３図及び第４図は、
デフ機構ユニツトの位置とオイルパンとの関係を
説明する略図である。１……トランスアクスルケース、２……トラン
スアクスルケース前部、３……トランスアクスル
ケース後部、９……バルブボデー、９ｂ……オイ
ルパン、２３……中仕切壁、２３ｅ……バルブボ
デー収容部、３４……遊星歯車変速ユニツト収容
部、４３……下部連通孔、４５……潤滑油戻り油
路、４６……下端壁。 FIG. 1 is a longitudinal sectional view of a transaxle case incorporating the structure of the lubricating oil return oil passage of an automatic transmission case according to an embodiment of the present invention, and FIG. 2 is a longitudinal sectional view of the lubricating oil return oil passage shown in FIG. 3 and 4 are longitudinal cross-sectional views of the rear part of the transaxle case having the structure of
FIG. 2 is a schematic diagram illustrating the relationship between the position of a differential mechanism unit and an oil pan. DESCRIPTION OF SYMBOLS 1...Transaxle case, 2...Transaxle case front part, 3...Transaxle case rear part, 9...Valve body, 9b...Oil pan, 23...Inner partition wall, 23e...Valve body housing part , 34... Planetary gear transmission unit housing portion, 43... Lower communication hole, 45... Lubricating oil return oil path, 46... Lower end wall.

Claims

[Scope of utility model registration request]

In an automatic transmission case having a transmission mechanism unit housing part and having an oil pan and a valve body housing part for housing a valve body of a hydraulic control device in the upper part of the transmission mechanism unit housing part, at least the lower part of the transmission mechanism unit housing part is partitioned by a partition wall whose diameter gradually increases toward the end opposite to the input side of the input shaft, and the lower part of the automatic transmission case is partitioned from the transmission mechanism unit housing section by the partition wall. a lubricating oil return oil passage that communicates with the user through a communication hole provided at the lowest part of the partition wall, and extends gradually from the communication hole toward an oil reservoir forming the lowest part of the case. A structure of a lubricating oil return oil passage of an automatic transmission case, characterized in that it is constituted by the above-mentioned partition wall and a lower end wall of the automatic transmission case provided below the partition wall.