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Lubricating device for pinion gear in planetary gear set

A planetary gear set and lubrication device technology, applied in gear lubrication/cooling, transmission parts, belts/chains/gears, etc., can solve problems such as difficult lubrication of rolling contact parts

Inactive Publication Date: 2009-10-07
HYUNDAI MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] In other words, the above configuration has the problem that it is impossible to directly supply oil from the axial center CL' of the pinion shaft 20 to the portion between the 5 o'clock position and the 7 o'clock position of the needle bearing 18, that is, the rolling contact portion is most difficult to lubricated parts

Method used

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  • Lubricating device for pinion gear in planetary gear set
  • Lubricating device for pinion gear in planetary gear set
  • Lubricating device for pinion gear in planetary gear set

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Embodiment Construction

[0031] Reference will now be made in detail to various embodiments of the invention, examples of which are illustrated in the accompanying drawings and described below. While the invention will be described in conjunction with exemplary embodiments, it will be understood that present description is not intended to limit the invention to those exemplary embodiments. On the contrary, the invention is intended to cover not only these exemplary embodiments, but also various alternatives, modifications, equivalents and other embodiments, which may be included within the spirit and scope of the invention as defined by the appended claims .

[0032] Such as Figure 5 As shown, a planetary gear set installed in an automatic transmission includes a sun gear 12 fitted on a rotating shaft 10, a plurality of pinion gears 14 meshing with the outer periphery of the sun gear 12, a ring gear whose inner periphery meshes with the outer periphery of the pinion gear 14 16, and the carrier that...

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Abstract

A lubricating device for a pinion gear in a planetary gear set provides smooth lubrication between a pinion shaft and a pinion bearing, and prevents scuffing due to lack of lubrication between the pinion shaft and a pinion gear. Oil may be supplied into a hollow of the pinion shaft while maintaining a level of lubrication pressure while the oil is discharged from an oil jet hole of a rotary shaft. The lubricating device may include an oil guide for supplying oil to a hollow of a pinion shaft supporting the pinion gear, the oil guide including a main body disposed about a rotary shaft and a closed outer circumference, the main body and outer circumference defining an oil-storage space in fluid communication with an oil jet hole of the rotary shaft, and / or a sub-body extending from the main body into the hollow of the pinion shaft and having an inner passage fluidly communicated with the oil-storage space.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from Korean Patent Application No. 10-2008-0030171 filed on Apr. 1, 2008, the entire contents of which are hereby incorporated by reference for all purposes. technical field [0003] The present invention relates to a lubricating device for a pinion gear in a planetary gear set, in particular to a lubricating device for a pinion gear in a planetary gear set, which effectively converts the The oil discharged from the rotating shaft flows into the hollow of the pinion shaft to lubricate the gap between the pinion shaft and the needle bearing. Background technique [0004] Generally, an automatic transmission that functions to transmit the driving force of the engine to the driving wheels uses a plurality of friction elements including planetary gear sets, clutches, and brakes to transmit the driving force generated by the engine to the drive wheels while automatically changing the transmi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H57/04
CPCF16H57/0427F16H57/082F16H57/043F16H57/0426F16H57/0482F16H57/04F16H57/08
Inventor 崔英三
Owner HYUNDAI MOTOR CO LTD