Planetary gear transmission systems or components – With lubricaton – For differential planetary gearing
Patent
1997-08-11
1999-04-06
Ta, Khoi Q.
Planetary gear transmission systems or components
With lubricaton
For differential planetary gearing
475248, F16H 5704, F01M 100
Patent
active
058909842
ABSTRACT:
A differential apparatus (7) comprises: a differential casing (21) rotated by an engine power; a plurality of pinion gears (65, 66) slidably housed in accommodation holes (63, 64) formed in the differential casing: a pair of side gears (35, 37) geared with each other via the pinion gears, two opposing end surfaces thereof being slid relative each other, either directly or via a thrust washer (61); and a block member (47, 91, 97) interposed between two inner circumferential surfaces of the two side gears so as to center the side gears, respectively. In particular, at least one oil sump (77, 79; 95; 101) is formed between the block member and the side gears, to supply lubricant to sliding portions between the block member (47, 91, 97) and the side gears (35, 37) and between two opposing end surfaces of the two side gears, by a centrifugal force generated by the rotating differential casing. Further, it is preferable to further form at least one central oil passage (301, 303, 305) at the centering portion (365) so as to extend from an inner circumferential side to an outer circumferential side of the boss portions (357, 359) of the two side gears (353, 355). Further, it is also preferable to form at least two radial oil passages (881, 885; 977, 978) between inner wall surfaces of the differential casing (821, 921) and the side gears (835, 837; 939, 941), respectively in such a way that a radially inward end thereof communicates with the helical oil passage (877, 879; 979L, 979R) and a radially outward end thereof communicates with sliding portion between the side gear and the differential casing, respectively.
REFERENCES:
patent: 4560056 (1985-12-01), Stockton
patent: 5624344 (1997-04-01), Yehl et al.
patent: 5669844 (1997-09-01), Homan et al.
patent: 5711737 (1998-01-01), Teraoka et al.
Aiba Satoshi
Hiraishi Kenji
Ono Shuhei
Teraoka Masao
Ta Khoi Q.
Tochigi Fuji Sangyo Kabushiki Kaisha
LandOfFree
Differential apparatus having helical oil distribution passages does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Differential apparatus having helical oil distribution passages , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Differential apparatus having helical oil distribution passages will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1365835