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Patent Searching and Data


Title:
HYDRAULIC TYPE CONTINUOUSLY VARIABLE TRANSMISSION
Document Type and Number:
Japanese Patent JPH06341507
Kind Code:
A
Abstract:

PURPOSE: To make the axial dimension compact, and prevent an engine from being stopped during gear shifting operations as well as to magnify short- circuiting capacity at a neutral position in the hydraulic continuously variable transmission.

CONSTITUTION: Gear shifting is so designed as to be operated by rotating a distribution ring support shaft 25. As a clutch mechanism C1 short-circuiting a hydraulic pump with a hydraulic motor, the hollow section of the distribution support shaft 25 is partitioned by a hollow spool 30 into a first oil path 114 and a circular second path 115, the end section of the hollow spool 30 is fixed, and a valve body 50 including a valve chamber 119 which is communicated with the other end section of the second oil path 115 at all times regardless of the rotational position of the distribution ring support shaft 25, is rotatably and coaxially fitted in the hollow spool 30 and the end section of the distribution ring support shaft 25. And in addition to the clutch mechanism C1, the transmission is equipped with auxiliary oil, paths 116 and 117 shortcircuiting the hydraulic pump with the hydraulic motor.


Inventors:
TAKAGI IZUMI
Application Number:
JP13038593A
Publication Date:
December 13, 1994
Filing Date:
June 01, 1993
Export Citation:
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Assignee:
KAWASAKI HEAVY IND LTD
International Classes:
F16H39/14; (IPC1-7): F16H39/14
Attorney, Agent or Firm:
Aoyama Ryo (1 person outside)