Title:
PLANETARY GEAR DEVICE AND PROGRAM FOR DESIGNING PLANETARY GEAR DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/213151
Kind Code:
A1
Abstract:
This planetary gear device is made by combining a plurality of planetary gear mechanisms, wherein the planetary gear device has first and second planetary gear mechanisms that share a carrier, each planetary gear mechanism is configured from an internal gear (Ik) (k being an integer of 2 or greater) and a planetary gear (Pk) that meshes with the internal gear (Ik) and circumferentially orbits the internal gear, the planetary gear (Pk) of each planetary gear mechanism comprises a spur gear in the form of an external gear, the planetary gears (Pk) of the planetary gear mechanisms either share a center shaft or are linked integrally at the center shafts so as to integrally rotate about a common rotational center axis line, or are integrated together so as to integrally rotate about a common rotational center axis line, and the number of teeth (zp1) of a first planetary gear constituting the first planetary gear mechanism is different from the number of teeth (zp2) of a second planetary gear constituting the second planetary gear mechanism. The number of teeth of the internal gear (I1) is (zi1), the number of teeth of the internal gear (I2) is (zi2), the profile shift coefficient of the first planetary gear is (xp1), the profile shift coefficient of the internal gear that meshes therewith and constitutes the first planetary gear mechanism is (xi1), the profile shift coefficient of the second planetary gear is (xp2), the profile shift coefficient of the internal gear that meshes therewith and that constitutes the second planetary gear mechanism is (xi2), the motive power transmission efficiency of the planetary gear device including the profile shift coefficients (xp1, xi1, xp2, xi2) is (η), the profile shift coefficient of the internal gear (I1) is (xi1), the profile shift coefficient of the internal gear (I2) is (xi2), and the profile shift coefficients have a relationship of a combination of values selected from among a combination of profile shift coefficients in which the motive power transmission efficiency η is maximal or submaximal within an allowable range of design specifications given in advance.
Inventors:
FUJIMOTO YASUTAKA (JP)
KOBUSE DAIJI (JP)
KOBUSE DAIJI (JP)
Application Number:
PCT/JP2017/021022
Publication Date:
December 14, 2017
Filing Date:
June 06, 2017
Export Citation:
Assignee:
NAT UNIV CORP YOKOHAMA NAT UNIV (JP)
International Classes:
F16H1/46; F16H55/08
Foreign References:
| JPS6023654B2 | 1985-06-08 | |||
| JPS63145841A | 1988-06-17 | |||
| JPH0916643A | 1997-01-17 |
Other References:
MUNEHARU MOROZUMI: "Yusei Haguruma to Sado Haguruma no Riron to Sekkei Keisanho", NIPPON KOGYO SHINBUN, 27 April 1989 (1989-04-27), pages 1 - 9, XP002909488
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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