Planetary gear transmission systems or components – With means to vary drive ratio or disconnect drive – Plural elements selectively braked
Patent
1989-01-04
1991-05-28
Herrmann, Allan D.
Planetary gear transmission systems or components
With means to vary drive ratio or disconnect drive
Plural elements selectively braked
475284, F16H 128
Patent
active
050190253
ABSTRACT:
A carrier is provided with a flange-shaped carrier cover directly secured to a pinion shaft which supports a pinion, and the carrier cover is integrally formed to a countershaft by heat forging. The carrier cover is formed with a lubricant oil hole extending from the countershaft toward the pinion shaft, and the countershaft is formed with a small diameter on the side bounded by the carrier cover where the planetary gear unit is positioned, and with a large diameter on the opposite side. As a result, the countershaft has a high degree of strength and forms a compact gear unit in the axial direction. Lubricant is supplied from a lubricant oil hole in the center of the shaft to a lubricant oil hole formed in the carrier cover, and is forcedly fed to the support surface of the pinion through oil holes in the pinion shaft. The axial force from the counterdriven gear is applied to a thrust bearing between the hub and the carrier cover, and the axial force is backed up by the large diameter section of the shaft.
REFERENCES:
patent: 2248240 (1941-07-01), King
patent: 2418455 (1947-04-01), Banker
patent: 3147642 (1964-09-01), Erwin
patent: 3233478 (1966-02-01), General et al.
patent: 4123952 (1978-11-01), Wayman
patent: 4721014 (1988-01-01), Ohkubo
Hayakawa Youichi
Hosono Chihiro
Nishida Masaaki
Aisin Aw Co. Ltd.
Herrmann Allan D.
Ta Khoi Q.
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