Adjustable damping valve arrangement

Patent metadata

Field	Value
Publication number	US-9618138-B2
Application number	US-201313923548-A
Country	US
Kind code	B2
Filing date	Jun 21, 2013
Priority date	Jun 21, 2012
Publication date	Apr 11, 2017
Grant date	Apr 11, 2017

Abstract

An adjustable damping valve arrangement comprises an adjustable damping valve in which flow is bidirectional, wherein a pressure-dependent supplementary valve is associated with the adjustable damping valve in series therewith for each through-flow direction, wherein each supplementary valve has at least one separate through-channel, the outlet side thereof being at least partially covered by at least one valve disk, wherein the flow path proceeding from the adjustable damping valve in flow direction is carried out through the first supplementary valve from a smaller inlet diameter to a larger outlet diameter, and the at least one valve disk carries out a peripheral lift movement, wherein the flow path through the second supplementary valve in flow direction to the adjustable damping valve is implemented from a larger inlet diameter to a smaller outlet diameter.

First claim

We claim:

1. An adjustable piston damping valve arrangement comprising:
an adjustable piston damping valve ( 37 ) in which flow is bidirectional;
a first and second pressure-dependent supplementary piston valve ( 91 ; 93 ) movable with said adjustable piston damping valve and associated with said piston adjustable damping valve ( 37 ) in series therewith for each through-flow direction, each supplementary valve ( 91 ; 93 ) comprising at least one separate through-channel ( 103 ; 105 ) having an outlet side; at least one valve disk ( 107 ; 109 ) at least partially covering said outlet side; wherein the flow path proceeding from the adjustable piston damping valve ( 37 ) in flow direction is carried out through the first valve ( 91 ) from a first inlet diameter (D i ) to a first outlet diameter (D a ) that is larger than said first inlet diameter, and the at least one valve disk ( 107 ) carries out a peripheral lift movement, and wherein the flow path through the second valve ( 93 ) in flow direction to the adjustable piston damping valve ( 37 ) is implemented from a second inlet diameter (D 1 ) to a second outlet diameter (D 2 ) that is smaller than said second inlet diameter;
additionally comprising a supplementary damping valve body ( 101 ); and wherein at least one valve disk ( 109 ) of said second piston supplementary valve ( 93 ) has an outer diameter and is constrained against radial displacement at said outer diameter;
wherein said at least one valve disk ( 107 ) of said first supplementary piston valve ( 91 ) has an inner diameter and is constrained against radial displacement at said inner diameter.

2. The adjustable damping valve arrangement according to claim 1 , wherein said valve disks ( 107 ; 109 ) of said first supplementary valve ( 91 ) and of said second supplementary valve ( 93 ) are fixed separately.

3. The adjustable damping valve arrangement according to claim 1 , wherein said at least one through-channel ( 103 ) of said first supplementary valve ( 91 ) comprises a radial portion ( 141 ) which adjoins a center incident flow region ( 139 ).

4. The adjustable damping valve arrangement according to claim 1 , wherein said second supplementary valve ( 93 ) comprises an annular cover ( 117 ) forming an interference fit with said supplementary valve body ( 101 ).

5. The adjustable damping valve arrangement according to claim 1 , additionally comprising at least one valve spring ( 131 ); and wherein said second supplementary valve ( 93 ) comprises an annular cover ( 117 ); said at least one valve spring ( 131 ) being supported at said annular cover ( 117 ) and exerting a preloading force on said at least one valve disk ( 109 ) of said second valve ( 93 ).

6. The adjustable damping valve arrangement according to claim 5 , additionally comprising an angle ring ( 125 ) associated with said at least one valve disk ( 109 ) of said second valve ( 93 ), said angle ring ( 125 ) having a supporting surface ( 127 ) for said at least one valve disk ( 109 ).

7. The adjustable damping valve arrangement according to claim 6 , wherein said annular cover ( 117 ) comprises a web ( 119 ); and wherein said angle ring ( 125 ) is held in place radially at said web ( 119 ) of said annular cover ( 117 ).

8. The adjustable damping valve arrangement according to claim 6 , wherein said angle ring ( 125 ) contacts said at least one valve disk ( 109 ) in the region of the outer diameter thereof.

Assignees

• Manger Thomas
• Schmitt Stefan
• Zeissner Bernd
• Zahnradfabrik Friedrichshafen

Inventors

• Manger Thomas
• Schmitt Stefan
• Zeissner Bernd

Classifications

• Y10T137/8593

  Systems · CPC title

• F16K47/00 Primary

  Means in valves for absorbing fluid energy (for pipes F16L55/00) · CPC title

• F16F9/465

  using servo control, the servo pressure being created by the flow of damping fluid, e.g. controlling pressure in a chamber downstream of a pilot passage (self-adjustment of damping F16F9/50) · CPC title

• F16F9/464 Primary

  Control of valve bias or pre-stress, e.g. electromagnetically (F16F9/465 takes precedence) · CPC title

• F16F9/3481

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