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US 7,611,436 B2Granted
Angular position adjusting mechanism
AssigneeAisin Seiki Kabushiki Kaisha
InventorSadao Ito
Life of this patent
Estimating the term…
Abstract
In an angular position adjusting apparatus, tooth profiles of an internal gear 31 and an external gear 21 are formed according to loop shapes 74a and 84a of predetermined trochoid curves 74 and 84.
Claims19
An angular position adjusting apparatus comprising:
- a fixed bracket supported by a fixed member;
- a rotating bracket supported by a movable member and enabled to adjust a relative angular position thereof with respect to the fixed bracket;
- an internal gear formed in one of the fixed bracket and the rotating bracket;
- and
- an external gear formed in the other of the fixed bracket and the rotating bracket,
- wherein the internal gear is mesh-engaged with the external gear to thereby enable a central axis of the external gear to orbit around a central axis of the internal gear,
- wherein tooth profiles of the internal gear and the external gear are formed according to loop shapes of predetermined trochoid curves, and
- wherein the tooth profiles of the internal gear and the external gear are formed so that tooth flanks of each of the internal gear and the external pear are formed to be at a constant distance from an associated one of the loop shapes.
5 more elements
An angular position adjusting apparatus comprising:
- a fixed bracket supported by a fixed member;
- a rotating bracket supported by a movable member and enabled to adjust a relative angular position thereof with respect to the fixed bracket;
- an internal gear formed in one of the fixed bracket and the rotating bracket;
- and
- an external gear formed in the other of the fixed bracket and the rotating bracket,
- wherein the internal gear is mesh-engaged with the external gear to thereby enable a central axis of the external gear to orbit around a central axis of the internal gear,
- wherein tooth profiles of the internal gear and the external gear are formed according to loop shapes of predetermined trochoid curves,
- wherein the loop shape of the predetermined trochoid curve of the internal gear is obtained based on a first trochoid curve as a locus of a basic point set in a rolling circle, which internally touches and rolls along a first fixed circle, and
- wherein the loop shape of the predetermined trochoid curve of the external gear is obtained based on a second trochoid curve as a locus of the basic point when the rolling circle internally touches and rolls along a second fixed circle set so as to internally touch the first fixed circle.
6 more elements
An angular position adjusting apparatus comprising:
- a fixed bracket supported by a fixed member;
- a rotating bracket supported by a movable member and enabled to adjust a relative angular position thereof with respect to the fixed bracket;
- and
- an internal gear formed in one of the fixed bracket and the rotating bracket;
- and
- an external gear formed in the other of the fixed bracket and the rotating bracket,
- wherein the internal pear is mesh-engaged with the external gear to thereby enable a central axis of the external gear to orbit around a central axis of the internal gear,
- wherein tooth profiles of the internal gear and the external gear are formed according to loop shapes of predetermined trochoid curves, and
- wherein the loop shape of the predetermined trochoid curve of the internal gear is different from the loop shape of the predetermined trochoid curve of the external gear.
6 more elements
Dependencies are inferred from the claim text.