Wobbling inner gearing planetary gear system and method of assembling external gears
OwnerYo Tsurumiinventor
Life of this patent
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Abstract
The present invention is a wobbling inner gearing planetary gear system having planetary external gears, and a center axis being located inside a periphery of the planetary external gears. The external gears can be provided in a number of 2n where n is an integer of 2 or more. The 2n external gears can be arranged in an circumferential direction of the center axis with a phase difference of 360°/2n. The external gears form parallels, and two external gears of each pair are offset from each other by a 180° phase difference. The two external gears can be arranged adjacent to each other in an axial direction of the center axis.
Claims6
A wobbling inner gearing planetary gear system, comprising:
- planetary external gears;
- and
- a center axis being located inside a periphery of the planetary external gears, wherein said external gears are provided in a number of 2n where n is an integer of 2 or more, and said 2n external gears are arranged in a circumferential direction of said center axis with a phase difference of 360°/2n, wherein said external gears form pairs and two external gears of each pair are offset from each other by 180° phase difference, and wherein said two external gears are arranged adjacent to each other in an axial direction of said center axis.
A method of assembling external gears in a wobbling inner gearing planetary gear system having planetary external gears, a center axis of the system being located inside a periphery of the external gears, the method comprising the steps of:
- selecting a number of the external gears to be 2n, where n is an integer of 2 or more;
- and
- mounting said 2n external gears in such a positional relationship that said 2n external gears are arranged in a circumferential direction of the center axis with a phase difference of 360°/2n,
- wherein said external gears form pairs and two external gears of each pair are offset from each other by 180° phase difference, and wherein said two external gears are arranged adjacent to each other in an axial direction of said center axis.
A wobbling inner gearing planetary gear system, comprising:
- planetary external gears;
- and
- a center axis of the system located inside a periphery of the external gears, wherein said external gears are provided in a number of m where m is an integer of 4 or more, and said m external gears are arranged in a circumferential direction of said center axis with a phase difference of 360°/m, and wherein said m external gears are arranged such that axially adjacent external gears are offset from each other by a maximum phase difference.
A method of assembling external gears in a wobbling inner gearing planetary gear system having planetary external gears, a center axis of the system being located inside periphery of the external gears, the method comprising the steps of:
- selecting a number of the external gears to be m, where m is an integer of 4 or more;
- successively determining an eccentric position where said m external gears are arranged in a circumferential direction of the center axis with a phase difference of 360°/m, and axially adjacent external gears are offset from each other by a maximum phase difference with reference to an eccentric position of an immediately previously mounted external gear;
- and
- mounting said m external gears at said determined eccentric position.
A method of assembling external gears in a wobbling inner gearing planetary gear system having planetary external gears, a center axis of the system being located inside periphery of the external gears, the method comprising the step of:
- mounting said m external gears selecting a number of the external gears to be m, where m is an integer of 4 or more, and in such a positional relationship that the m external gears are arranged in a circumferential direction of the center axis with a phase difference of 360°/m, and that two adjacent external gears are offset from each other by a maximum phase difference.
Dependencies are inferred from the claim text.