CHECK VALVE FOR HYDRAULIC CONTINUOUSLY VARIABLE TRANSMISSION

Title:

CHECK VALVE FOR HYDRAULIC CONTINUOUSLY VARIABLE TRANSMISSION

Document Type and Number:

Japanese Patent JP3954910

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To solve a conventional problem of incapability of inserting a check valve wholly through a main circuit when it is inserted in a perpendicular direction to the main circuit in the case two hydraulic continuously variable transmissions are disposed side-to-side on a single oil passage plate.
SOLUTION: In this check valve 35, a sleeve 36 is slidably engaged in the direction of a main oil passage with a valve hole 32h, and a seat member 37 is engaged with the valve hole 32. A coil spring 38 to energize the sleeve is provided to disconnect the main oil passage from a charge circuit 32c when the sleeve is in an abutment state with the seat member. When the sleeve is in a separated state from the seat member, the main oil passage is communicated with the charge circuit. Outer diameter of a seating part of the seat member to be seated on a step part 36f between the valve hole and the main circuit is set to be smaller than outer diameter of the sleeve. The sleeve is formed with a step to have a small diameter part 36b and a large diameter part 36b, and the outer diameter of the seat member is similar to or smaller than the outer diameter part of the sleeve.

More Like This:

WO/2002/093049	ARRANGEMENT IN VALVE DEVICE, WHERE THE VALVE BODY IS PROVIDED WITH RADIAL PROJECTING CONNECTION PINS ENGAGED WITH ANNULAR PISTON MEANS WHICH DISPLACES THE VALVE BODY
JPS60171989	[Title of the device] The Behn type compressor for car air conditioners
JP2001153242	CHECK VALVE

Inventors:

Goro Nozaki
Yasuhisa Mochizuki
Kengo Sasahara

Application Number:

JP2002181349A

Publication Date:

August 08, 2007

Filing Date:

June 21, 2002

Export Citation:

Click for automatic bibliography generation Help