Valve

Patent metadata

Field	Value
Publication number	US-10138976-B2
Application number	US-201415030441-A
Country	US
Kind code	B2
Filing date	Sep 26, 2014
Priority date	Nov 8, 2013
Publication date	Nov 27, 2018
Grant date	Nov 27, 2018

Abstract

A valve includes a valve disc that partitions one chamber and another chamber. The valve disc includes annular bosses and seats at each of the one chamber side and the other chamber side, and an auxiliary seat at the other chamber side. The boss is formed to support leaf valves. The seats are formed on outer peripheral sides of the respective bosses. At least one of the seats is disposed to project with respect to the boss of the corresponding chamber side. An outer peripheral end of the seat on the one chamber side is disposed on an outer peripheral side with respect to an outer peripheral end of the seat on the other chamber side. The auxiliary seat is formed on an outer peripheral side of the seat, and have a height equal to or greater than that of the seat on the other chamber side.

First claim

The invention claimed is:

1. A valve, comprising:
a valve disc that partitions a chamber into one chamber and another chamber; and
annular-plate shaped leaf valves including first leaf valves laminated on one chamber side of the valve disc, and second leaf valves laminated on an other chamber side of the valve disc, wherein the valve disc includes:
a first annular boss formed at the one chamber side to support the first leaf valves, and a second annular boss formed at the other chamber side to support the second leaf valves;
a first seat for the first leaf valves formed on an outer peripheral side of the first annular boss on the one chamber side, and a second seat for the second leaf valves formed on an outer peripheral side of the second annular boss on the other chamber side;
an auxiliary seat formed on an outer peripheral side of the second seat on the other chamber side;
a first opening surrounded by the first seat, and a second opening surrounded by the second seat;
one passage that allows the one chamber to communicate with the second opening at the other chamber side; and
another passage that allows the other chamber to communicate with the first opening at the one chamber side,

at least one of the first and second seats being disposed to project past, in a direction parallel to an axial direction, a corresponding one of the first and second annular bosses,
an outer peripheral end of the first seat on the one chamber side being more radially outward than an outer peripheral end of the second seat on the other chamber side,
the auxiliary seat having a height equal to or greater than a height of the second seat on the other chamber side, and being disposed at a position farther radially outward than a position of an outer edge of the second leaf valve,
the first seat and the auxiliary seat being formed at positions overlapping with each other in a side view of the valve disc,
a length, in a direction parallel to the axial direction, from a surface of the first annular boss to a surface of the second annular boss being shorter than a length, in the direction parallel to the axial direction, from a surface of the first seat to a surface of the auxiliary seat.

2. The valve according to claim 1 , wherein the first seat on the one chamber side includes a plurality of branches and a plurality of arc-shaped arc portions, the branches extending from the first annular boss on the one chamber side to an outer peripheral side, the arc portion coupling outer peripheral ends of the adjacent branches.

3. The valve according to claim 2 , wherein:
the auxiliary seat is formed into an annular shape, the auxiliary seat being disposed at an outer periphery of the second seat on the other chamber side spacing a predetermined interval with the second seat on the other chamber side,
an outer peripheral end of the auxiliary seat is disposed at a position identical to an outer peripheral end of the arc portion or is disposed on an outer peripheral side with respect to the outer peripheral end of the arc portion, and
an inner peripheral end of the auxiliary seat is disposed at a position identical to an inner peripheral end of the arc portion or is disposed on an inner peripheral side with respect to the inner peripheral end of the arc portion.

4. The valve according to claim 1 , wherein the valve disc is a mold piston integrated with an annular piston ring, the piston ring being mounted to an outer periphery of the valve disc.

5. The valve according to claim 1 , wherein on the other chamber side, the second seat is disposed to project with respect to the second annular boss, and on the one chamber side, the first annular boss is disposed to be equal to the first seat or to project with respect to the first seat.

Assignees

• Kyb Corp

Inventors

• Miwa Masahiro
• Hoshino Yuta

Classifications

• F16K15/16

  with tongue-shaped laminae · CPC title

• F16F9/3481 Primary

  characterised by shape or construction of throttling passages in piston (F16F9/344 takes precedence) · CPC title

• Y10T137/7779

  Axes of ports parallel · CPC title

• F16F9/3484 Primary

  characterised by features of the annular discs per se, singularly or in combination · CPC title

• F16K31/1226

  the fluid circulating through the piston · CPC title