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Title:
HYDRAULIC CONTINUOUSLY VARIABLE TRANSMISSION DEVICE
Document Type and Number:
Japanese Patent JP2007333008
Kind Code:
A
Abstract:

To provide a spool capable of reducing an operation noise of a hydraulic continuously variable transmission device, while securing a function of the spool.

This hydraulic continuously variable transmission device 1 wherein an input side plunger 8, an output side plunger 10, a cylinder block 7 storing each timing spool 9, 11 slidably in parallel with the axial direction, an input side swash plate 6 abutting on the tip of the input side plunger 8, and an output side swash plate 12 abutting on the output side plunger 10 on the opposite side to the input side swash plate 6 are arranged on an input shaft 2, has a configuration wherein each timing spool 9, 11 has each notched part 9e, 11e formed on corner parts of enlarged parts 9a, 11a blocking passages (communicating holes 33, 43) of a hydraulic oil communicating with holes (each plunger hole 31, 41) for inserting each plunger 8, 10.

COPYRIGHT: (C)2008,JPO&INPIT


Inventors:
EGUCHI SHINGO
OUCHIDA TAKASHI
SHIOZAKI SHUJI
Application Number:
JP2006162754A
Publication Date:
December 27, 2007
Filing Date:
June 12, 2006
Export Citation:
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Assignee:
YANMAR CO LTD
International Classes:
F16H39/14; F03C1/253; F04B1/22
Domestic Patent References:
JP2003014076A2003-01-15
JP2002054713A2002-02-20
JPS63140166A1988-06-11
Attorney, Agent or Firm:
矢野 寿一郎