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Bearing assembly for planetary gear pinion

A technology for planetary gears and planetary gear carriers, which is applied in the direction of bearing assembly, bearing components, bearings for rotational motion, etc., and can solve problems such as operating speed reliability and life impact

Inactive Publication Date: 2013-01-02
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High operating speeds have an impact on reliability and lifetime

Method used

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  • Bearing assembly for planetary gear pinion
  • Bearing assembly for planetary gear pinion
  • Bearing assembly for planetary gear pinion

Examples

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Embodiment Construction

[0016] The following description is exemplary in itself and is not intended to limit the invention, application and uses.

[0017] now refer to figure 1 and 2 , a typical and exemplary planetary gear assembly incorporating the present invention is indicated and generally designated by reference numeral 10 . The planetary gear assembly 10 includes a centrally disposed sun gear 12 fixed on a shaft 14 . Concentrically disposed about sun gear 12 and shaft 14 is a planet or pinion carrier 16 . The planet carrier 16 positions and supports a plurality (typically three or four) of planets or pinions 20 . Typically, a ring gear (not shown) surrounds the planet carrier 16 and includes gear teeth that engage each planet or pinion 20 . Each planet or pinion 20 is rotatably supported on a single or double needle bearing assembly 22 which in turn is supported on the planet carrier 16 by any suitable means such as staking, spot welding or interference fit. Hollow stub shaft or pinion sh...

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PUM

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Abstract

An outer needle bearing race and thrust washer assembly provides improved lubrication for a pinion gear of a planetary gear assembly. The bearing race and thrust washer assembly are used in pairs with the bearing races disposed within the planet or pinion gear and the thrust washers disposed adjacent the end faces of the planet or pinion gear. Each assembly includes a cylindrical bearing portion having a crowned, i.e., convex, inner surface which is secured at one end to a thrust washer. The outside face of the washer includes a plurality of shallow radial channels or grooves. A plurality of oil passageways extend from the grooved surface of the washer to its opposite surface inside the cylindrical bearing portion.

Description

technical field [0001] The present invention relates to a bearing assembly for a pinion of a planetary gear assembly, and more particularly to an outer race bearing and thrust washer assembly for a pinion or planet gear of a planetary gear assembly. Background technique [0002] The statements in this paragraph merely provide background information related to the present disclosure and may or may not constitute prior art. [0003] Planetary gear assemblies are the backbone of many mechanical transmissions. This arrangement includes a centrally arranged sun gear, a planet carrier arranged around the sun gear and supporting in rotation a plurality (usually three or four) of planet gears, and an outer ring gear. The planet gears are in constant mesh with the sun gear and ring gear. Depending on what elements are driven and held stationary and the number of teeth on the multiple gears, a large number of gear ratios can be achieved with these devices. [0004] In applications ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H1/28
CPCF16C19/48F16H2057/085F16C17/04F16H57/08F16C2361/61F16C19/466F16C21/00F16C33/1065F16C33/581F16C2226/36
Inventor J·Y·-L·陈J·M·盖尼A·P·威利斯H·J·金
Owner GM GLOBAL TECH OPERATIONS LLC