Title:
SPEED CHANGE TRANSMISSION UNIT
Document Type and Number:
WIPO Patent Application WO/2011/114768
Kind Code:
A1
Abstract:
Rotation of an input axle (8) coaxially fitted to an output axle (9) by way of a bearing (16) is transmitted from a sun gear (11) to a gear part (13a) of a planetary pinion (13), which causes a gear part (13b) of the pinion (13) to roll along the inner circumference of a fixed ring gear (12). Thus, the rotation of the input axle (8) is transmitted to the output axle (9) through a carrier (14). As shown in (b) and (c), the gear part (13a) of the pinion (13) is positioned closer to the output axle (9) than the gear part (13b) of the pinion (13), which is the opposite arrangement to the conventional structure shown in (a). Therefore, the offset between the bearing (16) and the gear part (13a) can be reduced from L3 (conventional structure) to L6 in the case of (b) or 0 in the case of (c). Thus, the amount of radial displacement of the gear part (13a) relative to the sun gear (11) can be reduced and partial engagement between teeth of the sun gear (11) and the gear part (13a) can be reduced when the angle of intersection around the bearing (16) occurs between the input and output axles (8, 9) due to inclination of the output axle (9).
Inventors:
ASOGAWA, Katsunori (())
麻生川 克憲 (())
麻生川 克憲 (())
Application Number:
JP2011/050973
Publication Date:
September 22, 2011
Filing Date:
January 20, 2011
Export Citation:
Assignee:
NISSAN MOTOR CO., LTD. (2 Takara-cho, Kanagawa-ku Yokohama-sh, Kanagawa 23, 〒2210023, JP)
日産自動車株式会社 (〒23 神奈川県横浜市神奈川区宝町２番地 Kanagawa, 〒2210023, JP)
ASOGAWA, Katsunori (())
日産自動車株式会社 (〒23 神奈川県横浜市神奈川区宝町２番地 Kanagawa, 〒2210023, JP)
ASOGAWA, Katsunori (())
International Classes:
F16H1/28; B60K7/00
Attorney, Agent or Firm:
HASHIMOTO, Takeshi et al. (Ekisaikai Bldg. 1-29, Akashi-cho, Chuo-k, Tokyo 44, 〒1040044, JP)
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Claims: