WO2015055313A1 - Amortisseur de vibrations à amortissement dépendant de l'amplitude - Google Patents

Amortisseur de vibrations à amortissement dépendant de l'amplitude Download PDF

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Publication number
WO2015055313A1
WO2015055313A1 PCT/EP2014/002789 EP2014002789W WO2015055313A1 WO 2015055313 A1 WO2015055313 A1 WO 2015055313A1 EP 2014002789 W EP2014002789 W EP 2014002789W WO 2015055313 A1 WO2015055313 A1 WO 2015055313A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
housing
piston rod
vibration damper
damper according
Prior art date
Application number
PCT/EP2014/002789
Other languages
German (de)
English (en)
Inventor
Hanno LUCZAK
Andreas Mai
Michael Heyer
Original Assignee
Thyssenkrupp Bilstein Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thyssenkrupp Bilstein Gmbh filed Critical Thyssenkrupp Bilstein Gmbh
Publication of WO2015055313A1 publication Critical patent/WO2015055313A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/50—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics
    • F16F9/512—Means responsive to load action, i.e. static load on the damper or dynamic fluid pressure changes in the damper, e.g. due to changes in velocity
    • F16F9/5126—Piston, or piston-like valve elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/34—Special valve constructions; Shape or construction of throttling passages
    • F16F9/348—Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body
    • F16F9/3482—Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body the annular discs being incorporated within the valve or piston body

Definitions

  • the invention relates to a vibration damper with amplitude-dependent damping comprising a cylinder tube with damping fluid and a guided in the cylinder bore on a piston rod and the cylinder tube in an axial direction in a piston rod side space and a piston rod remote space piston assembly comprising a housing, wherein in the housing a comfort valve and a chamber is arranged with a longitudinally movable in the chamber separating element, wherein the separating element between the comfort valve and at least one opening into the piston rod side space opening of the chamber is arranged and wherein the piston rod assembly has a hydraulically arranged parallel to the comfort valve sports valve.
  • a comparatively simply constructed as well as effective vibration damper with amplitude-dependent damping is known from DE 103 51 353 B4, wherein in a housing of the piston assembly, a chamber is provided with a longitudinally movable separating piston. In low-amplitude vibrations, the separating piston in the chamber may be low
  • CONFIRMATION COPY Move resistance so that a soft, comfortable characteristic of the vibration damper results.
  • the separating piston separates the chamber into two sections, one section being connected to a piston rod-side compartment and the other section being connected to a piston rod-distal compartment. Since the mobility of the separating piston is limited by the length of the chamber, the described bypass is only active for oscillations with small amplitude, because otherwise the separating piston abuts the edge of the chamber and thus blocks the bypass.
  • the separating piston is designed with a buffer. A comparable arrangement in its function is also known from DE 10 2006 046 333 B3.
  • a vibration damper with the features described above is known from DE 10 2005 055 801 B3.
  • a valve arrangement is provided between the chamber and the piston rod remote space, which is referred to in the context of the present invention, due to its function as a comfort valve.
  • the comfort valve has a pressure relief valve for the rebound and a pressure relief valve for the pressure stage, wherein in each case a spring washer or a spring washer package is provided. This results in the advantage that the characteristic in the corresponding hydraulic path can be precisely matched to the respective requirements by means of the comfort valve.
  • the function of the comfort valve is limited by the arranged in the chamber separating piston to small amplitudes.
  • the separating piston abuts the edges of the associated chamber, so that the corresponding bypass path is blocked with the comfort valve and a hydraulically arranged in parallel valve device is active, which is also referred to as a sports valve in the invention due to their function.
  • comfort valve and sports valve is based on the function of the respective valve device and is essentially an easy distinction. Depending on the design of the valves but no strict functional separation before. Finally, the entire shock absorber may also be equipped with further flow paths, by-pass valves, electronically controlled valves or the like.
  • the chamber with the separating piston is arranged in a housing, which constitutes an extension of the piston rod.
  • a housing which constitutes an extension of the piston rod.
  • a damping valve for a shock absorber comprising a main body and one or more valve disks
  • the valve disks separate a first damping fluid chamber from a second damping fluid chamber
  • the valve spring discs are supported via an inner and an outer edge support on the base body and controlling a passage of damping fluid in both directions by resiliently deflecting the valve spring discs from either the inner or outer edge support.
  • the valve disk or the valve disks are arranged on a retaining ring which is prestressed by a further spring disk package.
  • the present invention seeks to provide an embodiment which is characterized by a compact design.
  • the invention relates to the sports valve is inserted into the housing, wherein an adjacent to a compression spring package of the sports valve damping fluid space is formed within the housing, which by at least one opening with the piston rod side space is connected, wherein the sports valve is adapted to by an elastic deformation of the compression spring disk package between the compression spring disk package and a first mating surface adjoining in the direction of the piston rod a Switzerlandcaren- passage and at a pressurization of the sports valve in the opposite direction between the compression spring disk package and a subsequent in the direction of the piston rod remote space second mating surface release a Druckchn trimlass.
  • the sports valve or main valve is arranged on a hollow, adjacent to the housing pin
  • the present invention teaches in the integration of the sports valve in the housing, including a fundamentally different structural design is provided.
  • the housing must be lengthened and designed such that sufficient space for integrating the sports valve is possible.
  • the seal between the piston rod remote space and the piston rod side space also takes place directly on an outer periphery of the housing.
  • the sports valve furthermore has a spring disk pack which is clamped in such a way that, depending on the direction of pressurization, it releases a compression passage radially outwards and a rebound passage radially inward.
  • a spring disk pack which is clamped in such a way that, depending on the direction of pressurization, it releases a compression passage radially outwards and a rebound passage radially inward.
  • the spring disk package of the sports valve can be acted upon with an additional clamping device, while then the design of the spring disk package is decisive for the compression stage takes place the opening of the Anlagensiden biolasses against the force of the spring washer package and the additional clamping device. So it is conceivable, for example, usually composed of rings spring disk package in its interior To apply area with a coil spring or the like.
  • the sports valve has an inner annular, radially open retaining ring and a radially outer control edge ring, wherein the retaining ring carries on its side facing the piston rod the spring disk package and on its opposite side the tensioning device.
  • the clamping device may be formed by a tension spring package, wherein the tension spring assembly is clamped between the retaining ring and the control edge ring and wherein the control edge ring forms the second counter surface for the spring disk package of the sports valve.
  • the housing is open in the direction of the piston rod remote space, wherein the sports valve is inserted from the open side of the housing.
  • the sports valve can in particular be fixed in the housing, that the control edge ring is screwed into the housing.
  • installation can optionally also be adjusted by the depth of engagement, the bias for the rebound and the rear stage of the sports valve.
  • the separating element is preferably a separating piston guided longitudinally movably in the housing.
  • the separating piston may have elastic stop buffer or a core of elastic material to prevent hard abutment at the edges of the housing.
  • the separating piston can also be supported on both sides by springs, but in addition, other embodiments of the separating element, for example as a membrane, are possible.
  • the housing is manufactured separately from the piston rod.
  • the housing having a threaded bore for receiving the piston rod, in which case a simple cylindrical member may be provided as a piston rod, which is provided only at its end or at its ends with a thread.
  • the housing is composed of an adjoining the piston rod upper housing part and a lower housing part, wherein the separating element is arranged in the upper housing part and wherein the comfort valve is inserted into the lower housing part ,
  • the housing composed of two parts, a particularly simple and compact arrangement of the various components is possible.
  • the upper housing part and the lower housing part can be screwed together, whereby a particularly simple connection is made possible.
  • the housing upper part has an external thread, which is screwed into an internal thread of the housing lower part.
  • the upper housing part projects in the region of the screwing inwards over the lower housing part.
  • the comfort valve may for example have a rigid base body with through openings, on each of which a spring washer package for the pressure stage and for the rebound stage is provided on both sides.
  • the vibration damper according to the invention with amplitude-dependent damping comprises a cylinder tube 1 with damping fluid and a guided in the cylinder tube 1 on a piston rod 2 and the cylinder tube 1 in an axial direction x in piston rod side space 3 and a piston rod remote space 4 piston assembly. 5
  • the piston assembly 5 comprises a housing 6 with an upper housing part 6a and a lower housing part 6b. Both the upper housing part 6 a and the lower housing part 6 b are provided with openings 7 a, 7 b, which open into the piston rod side space 3.
  • upper housing part 6a and lower housing part 6b refers to the usual orientation of a built-vibration damper in a motor vehicle, wherein the piston rod 2 is led up out of the cylinder tube 1.
  • the vibration damper can also be mounted in a different orientation.
  • the piston assembly 5 is sealed at a lower end of the housing with a seal 8 against the inner wall of the cylinder tube 1, whereby the piston rod side space 3 is separated from the piston rod remote space 4.
  • a chamber 9 is formed in the housing 6, which is bounded in the direction of the piston rod 2 and in the radial direction by the upper housing part 6a.
  • a separating element 10 is arranged in the form of a separating piston, wherein in the direction of the piston rod distant space 4, a comfort valve 11 connects to the chamber 9.
  • the comfort valve 11 comprises a main body 12 with passage openings 13a, 13b for the compression stage and rebound, wherein on both sides of the base body 12 each have a spring washer package 14a, 14b and a spring washer of the comfort valve 11 is arranged.
  • the space below the comfort valve 11 is open in the direction of the piston rod remote space 4.
  • the movement of the separating element 10 in the form of a separating piston is limited by the length of the chamber 9 in the axial direction x. If the separating piston strikes the comfort valve 11 during a pull on the piston rod 2, no further flow through the corresponding flow path is possible. The same applies if the separating piston abuts the upper housing part 6a at a pressure on the piston rod 2 at the upper edge of the chamber 9.
  • a sports valve 15 and main valve arranged parallel to the chamber 9 with the separating element 10 and the comfort valve 11, wherein the openings 7b in the lower housing part 6b are associated with the sports valve 15.
  • the sports valve is inserted into the lower housing part 6b, wherein the sports valve 15 comprises a spring disk pack 16, which is formed from rings and is adapted to a rebound passage 17 by an elastic deformation between the spring disk pack 16 and a first counter surface following in the direction of the piston rod 2 and at one Pressurization of the sports valve 15 in the opposite direction between the spring disk package 16 and a subsequent in the direction of the piston rod distal space 4 second mating surface a Drucklabnd urchlass 18 release.
  • Such acting in two directions spring washer package 16 can be particularly space-saving integrated into the housing 6.
  • the spring disk package 16 of the sports valve 15 is received by projections of a retaining ring 19, wherein the retaining ring 19 is radially open and thus allows a pressure on the piston rod 2, a flow around the bottom of the spring disk package 16.
  • a Spannfederinnver 20 is disposed on the retaining ring 19 opposite the spring disk package 16 which is clamped between the retaining ring 19 and a control edge ring 21, wherein the control edge ring 21 forms the second mating surface for the spring disk package 16 of the sports valve 15.
  • the parallel to the sports valve 15 arranged comfort valve 11 is active for low amplitude oscillations.
  • the housing 6 moves in the cylinder tube 1 upwards.
  • the damping fluid flows into the openings 7a of the upper housing part 6a, whereby the separating element 10 moves downward in the chamber 9, whereby the damping fluid displaced from the chamber 9 below the separating element 10 via the comfort valve 11 through the corresponding through hole 13a and the corresponding spring disk package 14a flows into the piston rod remote space 4.
  • control edge ring 21 is screwed into the lower housing part 6b, so that the bias of the spring disk package 16 and the clamping screw 20 of the sports valve 15 is adjustable by the depth of engagement.
  • the characteristic of the sports valve 15 in the compression stage is determined solely by the spring disk package 16 and its bias.
  • the housing 6 is composed of the upper housing part 6a and the lower housing part 6b, a particularly simple arrangement of the comfort valve is possible.
  • the upper housing part 6a is screwed with an external thread into an internal thread of the lower housing part 6b, so that the upper housing part projects inwards over the inner wall of the housing lower part 6b.
  • An end face of the upper housing part 6a presses on the main body 12 of the comfort valve 11, wherein the base body 12 is supported on the opposite side via an intermediate ring 22 on an inwardly projecting collar 23 of the lower housing part 6b.
  • the intermediate ring 22 also forms the first mating surface for the spring disk package 16 of the sports valve 15.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

L'invention concerne un amortisseur de vibrations à amortissement dépendant de l'amplitude. Cet amortisseur comprend un tube cylindrique (1) contenant un liquide d'amortissement et un ensemble piston (5) guidé dans le tube cylindrique (1) sur une tige de piston (2). L'ensemble piston comprend un boîtier (6), une soupape mode de confort (11) et une chambre (9) pourvue d'un élément de séparation (10) étant disposées dans le boîtier (6), l'élément de séparation (10) étant disposé entre la soupape mode confort (11) et au moins une ouverture (7a) de la chambre (9) débouchant dans un espace (3) tourné vers la tige de piston. L'ensemble piston comprend en outre une soupape mode sport (15) disposée de manière hydraulique parallèlement à la soupape mode confort (11). Selon l'invention, la soupape mode sport (15) est insérée dans le boîtier (6), une chambre de liquide d'amortissement adjacente à un groupe de rondelles élastiques (16) de la soupape mode sport (15) étant constituée, laquelle est reliée à la chambre côté tige de piston (3) par au moins une ouverture (7b). La soupape mode sport (15) est mise au point pour libérer un passage d'étage de traction (17) et un passage d'étage de pression (18) du fait d'une déformation élastique du groupe de rondelles élastiques (16) en fonction de l'application de pression.
PCT/EP2014/002789 2013-10-18 2014-10-16 Amortisseur de vibrations à amortissement dépendant de l'amplitude WO2015055313A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013111502.0A DE102013111502B4 (de) 2013-10-18 2013-10-18 Schwingungsdämpfer mit amplitudenabhängiger Dämpfung
DE102013111502.2 2013-10-18

Publications (1)

Publication Number Publication Date
WO2015055313A1 true WO2015055313A1 (fr) 2015-04-23

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PCT/EP2014/002789 WO2015055313A1 (fr) 2013-10-18 2014-10-16 Amortisseur de vibrations à amortissement dépendant de l'amplitude

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DE (1) DE102013111502B4 (fr)
WO (1) WO2015055313A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019500553A (ja) * 2015-11-27 2019-01-10 コニ・ビー．ブイ．Ｋｏｎｉ Ｂ．Ｖ． 周波数選択ダンパ弁ならびにそのような弁を有するショックアブソーバおよびピストン
US11685220B2 (en) 2021-10-12 2023-06-27 DRiV Automotive Inc. Control systems and methods for suspension systems
US11691474B2 (en) 2021-10-12 2023-07-04 DRiV Automotive Inc. Suspension system tank filling systems and methods
US11697319B2 (en) 2021-10-12 2023-07-11 DRiV Automotive Inc. Suspension system with comfort valve integration
US11865887B2 (en) 2021-10-12 2024-01-09 DRiV Automotive Inc. Suspension system with incremental roll and pitch stiffness control
US11865889B2 (en) 2021-10-12 2024-01-09 DRiV Automotive Inc. Suspension system with comfort valves between cross-over hydraulic circuits
US11904841B2 (en) 2021-10-12 2024-02-20 DRiV Automotive Inc. Suspension system integration with advanced driver assistance system
US11912092B2 (en) 2021-10-12 2024-02-27 DRiV Automotive Inc. Suspension leak check systems and methods
US11919355B2 (en) 2021-10-12 2024-03-05 DRiV Automotive Inc. Valve diagnostic systems and methods
US11938772B2 (en) 2021-10-12 2024-03-26 DRiV Automotive Inc. System for grading filling of a hydraulic suspension system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2015877B1 (en) * 2015-11-27 2017-06-14 Koni Bv Shock absorber with improved piston architecture.
NL2015875B1 (en) 2015-11-27 2017-06-14 Koni Bv Shock absorber with comfort valve.

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3914297A1 (de) * 1989-04-29 1990-10-31 Boge Ag Regelbarer schwingungsdaempfer fuer kraftfahrzeuge
DE4022098C1 (en) * 1990-07-11 1991-07-25 Boge Ag, 5208 Eitorf, De Motor vehicle vibration damper - has valve discs to control flow with seats on inner and outer edges
EP0791764A2 (fr) * 1996-02-20 1997-08-27 General Motors Corporation Soupape pour amortisseur monotube
DE10351353B4 (de) 2003-07-08 2005-12-22 Thyssenkrupp Bilstein Gmbh Schwingungsdämpfer mit amplitudenabhängiger Dämpfung
DE102005055801B3 (de) 2005-11-21 2007-02-15 Thyssenkrupp Bilstein Suspension Gmbh Schwingungsdämpfer mit amplitudenselektiver Dämpfungseinrichtung
DE102006046333B3 (de) 2006-09-28 2008-02-07 Thyssenkrupp Bilstein Suspension Gmbh Schwingungsdämpfer mit amplitudenabhängiger Dämpfungseinrichtung, insbesondere für Schwingungsdämpfer mit großem Durchmesser
DE202012103981U1 (de) 2012-10-04 2012-11-15 Thyssenkrupp Bilstein Gmbh Dämpfungsventil für einen Stoßdämpfer

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006008675B3 (de) 2006-02-24 2007-09-13 Zf Friedrichshafen Ag Schwingungsdämpfer mit amplitudenselektiver Dämpfkraft

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3914297A1 (de) * 1989-04-29 1990-10-31 Boge Ag Regelbarer schwingungsdaempfer fuer kraftfahrzeuge
DE4022098C1 (en) * 1990-07-11 1991-07-25 Boge Ag, 5208 Eitorf, De Motor vehicle vibration damper - has valve discs to control flow with seats on inner and outer edges
EP0791764A2 (fr) * 1996-02-20 1997-08-27 General Motors Corporation Soupape pour amortisseur monotube
DE10351353B4 (de) 2003-07-08 2005-12-22 Thyssenkrupp Bilstein Gmbh Schwingungsdämpfer mit amplitudenabhängiger Dämpfung
DE102005055801B3 (de) 2005-11-21 2007-02-15 Thyssenkrupp Bilstein Suspension Gmbh Schwingungsdämpfer mit amplitudenselektiver Dämpfungseinrichtung
DE102006046333B3 (de) 2006-09-28 2008-02-07 Thyssenkrupp Bilstein Suspension Gmbh Schwingungsdämpfer mit amplitudenabhängiger Dämpfungseinrichtung, insbesondere für Schwingungsdämpfer mit großem Durchmesser
DE202012103981U1 (de) 2012-10-04 2012-11-15 Thyssenkrupp Bilstein Gmbh Dämpfungsventil für einen Stoßdämpfer

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019500553A (ja) * 2015-11-27 2019-01-10 コニ・ビー．ブイ．Ｋｏｎｉ Ｂ．Ｖ． 周波数選択ダンパ弁ならびにそのような弁を有するショックアブソーバおよびピストン
US11685220B2 (en) 2021-10-12 2023-06-27 DRiV Automotive Inc. Control systems and methods for suspension systems
US11691474B2 (en) 2021-10-12 2023-07-04 DRiV Automotive Inc. Suspension system tank filling systems and methods
US11697319B2 (en) 2021-10-12 2023-07-11 DRiV Automotive Inc. Suspension system with comfort valve integration
US11865887B2 (en) 2021-10-12 2024-01-09 DRiV Automotive Inc. Suspension system with incremental roll and pitch stiffness control
US11865889B2 (en) 2021-10-12 2024-01-09 DRiV Automotive Inc. Suspension system with comfort valves between cross-over hydraulic circuits
US11904841B2 (en) 2021-10-12 2024-02-20 DRiV Automotive Inc. Suspension system integration with advanced driver assistance system
US11912092B2 (en) 2021-10-12 2024-02-27 DRiV Automotive Inc. Suspension leak check systems and methods
US11919355B2 (en) 2021-10-12 2024-03-05 DRiV Automotive Inc. Valve diagnostic systems and methods
US11938772B2 (en) 2021-10-12 2024-03-26 DRiV Automotive Inc. System for grading filling of a hydraulic suspension system

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Publication number Publication date
DE102013111502A1 (de) 2015-04-23
DE102013111502B4 (de) 2018-09-27

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