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Title:
静油圧式無段変速機のクラッチ装置
Document Type and Number:
Japanese Patent JP4469595
Kind Code:
B2
Abstract:
A hydrostatic continuously variable transmission includes a hydraulic pump and a hydraulic motor, supported by a common support shaft, and hydraulically connectable to each other through a hydraulic circuit including an inside passage and an outside passage. A clutch device includes a valve spool, which is slidably disposed in a hollow internal bore formed in the transmission support shaft. The valve spool is operable to make or interrupt fluid communication between the inside passage and the outside passage, according to the movement thereof. A governor mechanism is mounted to a pump casing of the hydraulic pump, and the governor mechanism generates a governor force corresponding to the rotating speed of a clutch cap, by use of centrifugal force generated by the rotation thereof. The valve spool is effectively moved in the hollow internal bore, using the governor force generated from the governor mechanism, to engage or disengage the clutch.

Inventors:
吉田 圭宏
八木ヶ谷 信幸
菅野 嘉久
榊原 健二
塚田 善昭
大関 孝
南里 武彦
Application Number:
JP2003398473A
Publication Date:
May 26, 2010
Filing Date:
November 28, 2003
Export Citation:
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Assignee:
本田技研工業株式会社
International Classes:
F16H61/4043; F16H39/14; F16H61/14; F16H61/26; F16H61/40; F16H61/42
Domestic Patent References:
JP617925A
JP10122332A
JP9100909A
JP62127562A
Attorney, Agent or Firm:
大西 正悟