US 2006/0135312 A1Published application

Planetary gear apparatus

AssigneeJtekt Corporation

InventorsAkihiko Shiina, Hiroaki Sougumo, Shiro Nakano, Kosuke Yamanaka

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Abstract

A planetary gear apparatus whose gears are all constituted by continuous shifted gears. A backlash between the input sun gear and each of the input side planetary gears is adjusted by pressing a second carrier plate supporting each integrated pair of the input side planetary gears and the output side planetary gears and moving it in the axial length direction by a ball bearing by a screwing operation of an adjusting nut. A backlash between the output sun gear and each of the output side planetary gears is also adjusted by pressing the output sun gear and moving it in the axial length direction by the ball bearing by the screwing operation of the adjusting nut. Accordingly, the backlash of all meshing portions can be adjusted during or after completion of the assemblage.

Claims4

Dependent claims

A planetary gear apparatus which comprises an input sun gear and an output sun gear supported coaxially;

a plurality of integrated pairs of an input side planetary gear meshing with an outer periphery of said input sun gear and an output side planetary gear meshing with an outer periphery of said output sun gear;
and a carrier supporting a plurality of spindles commonly and pivotably supporting each integrated pair of said input side planetary gear and said output side planetary gear, and transfers rotation of said input sun gear to said output sun gear while changing gear ratio in stepless manner by rotating said carrier in both forward and reverse directions, wherein
said input sun gear, said output sun gear, each of said input side planetary gears and each of said output side planetary gears are all constituted by continuous shifted gears which change an amount of addendum modification continuously in the axial length direction, and
a backlash adjusting device for adjusting backlash between each of said gears by moving each of said gears from one side in the axial length direction to the other side direction is provided.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 11/311,163Filed 20 Dec 2005
Priority: JP 2004-37021521 Dec 2004
Published: 22 Jun 2006
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

B62D 5/008
Power-assisted or power-driven steering: changing the transfer ratio between the steering wheel and the steering gear by variable supply of…
F16H 1/2863
With gears having orbital motion: arrangements for adjusting or for taking-up backlash
F16H 35/008
Gearings or mechanisms with other special functional features: for variation of rotational phase relationship, e.g. angular relationship between…
F16H 2057/128
Arrangements for adjusting or for taking-up backlash not provided for elsewhere: using axial positioning of gear wheel with addendum modification…