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Planetary gear mechanism with reduced gear backlash

A technology of planetary gears and planetary gear sets, applied in gear transmissions, belts/chains/gears, mechanical equipment, etc., can solve the problems of increased size, weight and cost of transmissions

Active Publication Date: 2019-08-16
E AAM DRIVELINE SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Typically, this uneven load distribution is addressed by increasing the size of the planetary gears, which can result in an undesirable increase in the size, weight and cost of the transmission

Method used

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  • Planetary gear mechanism with reduced gear backlash
  • Planetary gear mechanism with reduced gear backlash
  • Planetary gear mechanism with reduced gear backlash

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] Example embodiments will now be described more fully with reference to the accompanying drawings.

[0023] in the attached figure 1 In, a portion of an example of an electronic drive module ("eDM") 10 constructed in accordance with the teachings of the present disclosure is illustrated. Except as shown and otherwise described herein, the eDM 10 can be substantially similar to any of the drive modules disclosed in commonly assigned US Patent No. 8,998,765, the disclosure of which is incorporated herein by reference as if set forth in full detail.

[0024] Briefly, the eDM 10 can include a torque split drive mechanism 14 that can be employed to transmit torque to first and second output members 16 , 18 . Each output member 16 , 18 is drivably coupled to a wheel (not shown) of a vehicle (not shown). Torque splitting drive mechanism 14 can include drive mechanism 24, power transfer member or clutch mechanism 26, dual planetary gear set 28, differential assembly 32 and hou...

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PUM

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Abstract

The present teachings provide a transmission comprising a planetary gear set (210) and a first displacement device (224). The planetary gear set can include a sun gear (214), a ring gear (220), a planet carrier (216), a first planet gear (218), and a second planet gear (222). The sun gear, ring gear and planet carrier can be arranged about a first axis (240). The first planet gear is engageable in meshing engagement with the sun gear and the ring gear, and is coupleable to the planet carrier for rotation relative thereto about a second axis. The first planet gear is axially slidable relative to the planet carrier. The second planet gear is engageable in meshing engagement with the sun gear and the ring gear, and is connectable to the planet carrier for rotation relative thereto about a third axis. The first displacement device (224) can be configured to axially displace the first planetary gear relative to the second planetary gear.

Description

technical field [0001] The present disclosure relates to a planetary gear mechanism with reduced gear backlash. Background technique [0002] This section provides background information related to the present disclosure which is not necessarily prior art. [0003] A transmission having a planetary gear set typically includes a sun gear, a ring gear, a planet carrier, and a plurality of planet gears. The planet gears are mounted to the planet carrier for common rotation about the central axis of the sun and ring gear, while being rotatable relative to the planet carrier. The planet gears mesh with both the ring gear and the sun gear. One of the sun gear, ring gear, or planet carrier is typically non-rotatably coupled to the transmission housing, and the other two of the sun gear, ring gear, or planet carrier receive and / or transmit input and Output torque between members. [0004] Gear tooth geometry, tolerances, and / or gear tooth wear can result in backlash or play betw...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H1/28F16H57/12
CPCF16H1/2836F16H1/2863F16H57/12F16H2057/126F16H2057/127
Inventor 芒努斯·赫德斯塔埃里克·J·斯滕
Owner E AAM DRIVELINE SYST