WO2022233723A1 - Kraftfahrzeugschwingungsdampfer - Google Patents
Kraftfahrzeugschwingungsdampfer Download PDFInfo
- Publication number
- WO2022233723A1 WO2022233723A1 PCT/EP2022/061465 EP2022061465W WO2022233723A1 WO 2022233723 A1 WO2022233723 A1 WO 2022233723A1 EP 2022061465 W EP2022061465 W EP 2022061465W WO 2022233723 A1 WO2022233723 A1 WO 2022233723A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gas pressure
- piston rod
- motor vehicle
- vehicle vibration
- vibration damper
- Prior art date
Links
- 238000013016 damping Methods 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 3
- 238000005245 sintering Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
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
- F16F9/3207—Constructional features
- F16F9/3235—Constructional features of cylinders
- F16F9/3242—Constructional features of cylinders of cylinder ends, e.g. caps
-
- 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
- F16F9/06—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
- F16F9/08—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid where gas is in a chamber with a flexible wall
- F16F9/092—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid where gas is in a chamber with a flexible wall comprising a gas spring with a flexible wall provided between the tubes of a bitubular damper
-
- 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
- F16F9/36—Special sealings, including sealings or guides for piston-rods
- F16F9/362—Combination of sealing and guide arrangements for piston rods
- F16F9/364—Combination of sealing and guide arrangements for piston rods of multi-tube dampers
-
- 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
- F16F9/43—Filling or drainage arrangements, e.g. for supply of gas
- F16F9/432—Filling or drainage arrangements, e.g. for supply of gas via piston rod sealing or guiding means
Definitions
- the present invention relates to a motor vehicle vibration damper according to the preamble of patent claim 1.
- a generic motor vehicle vibration damper is well known from the prior art.
- DE 102004053401 A1, DE 102006011 397 B3, DE 102016208454 A1 and DE 102005005789 A1 each disclose a motor vehicle vibration damper, comprising at least one damper cylinder which is at least partially filled with a liquid damping medium, an axial direction relative to the longitudinal axis of the motor vehicle vibration damper Movable piston rod, which protrudes into the damper cylinder in sections, a piston rod guide, which encompasses the piston rod in the circumferential direction and seals the damper cylinder from the outside, a gas-tight, shape-changing gas pressure tank, which is arranged in an equalization space inside the damper cylinder, and a filling channel, which comprises connects the gas pressure vessel interior with the outside environment, and a check valve which the filling channel depending on a gas pressure difference between the gas pressure inside and outside the gas pressure vessel interior ver closes or opens.
- the filling channel usually runs at least in sections through the piston rod guide itself and the non-return valve is formed directly in the piston rod guide, it is necessary for all the above-mentioned constructions to make the piston rod guide from a gas-impermeable high-quality material so that the gas can escape after filling of the gas pressure container cannot escape uncontrolled from the gas pressure container.
- the piston rod guide is usually made of metal using a suitable machining process. Both the material and the manufacturing process associated with high production costs contribute to an increase in the end price of the motor vehicle vibration damper. Proceeding from this, the object of the present invention is to offer an alternative motor vehicle vibration damper which can be produced simply and inexpensively.
- check valve is formed within a gas-impermeable Ragtschventilge housing, which is positively and/or cohesively connected to the piston rod guide, an uncontrolled escape of the gas from the gas container can be prevented, regardless of the nature of the piston rod guide.
- the piston rod guide can be manufactured using a sintering process, which significantly minimizes the material costs and the manufacturing costs of the piston rod guide.
- the gas pressure vessel comprises a connection piece which is inseparably connected thereto and which forms the non-return valve housing of the non-return valve.
- the number of components is thus reduced, which entails a further reduction in costs.
- the gas pressure container can include a connection piece that is inseparably connected to it, and the check valve can be formed as a separate component and connected to the connection piece to form a common structural unit in a form-fitting and/or cohesive manner.
- each component, connection piece and/or non-return valve can advantageously be made from a material that is best suited for its function and assembled into a common structural unit.
- the check valve is designed and arranged such that its When installed, the check valve housing extends completely through the piston rod guide.
- the gas can be prevented from escaping when the gas pressure container is being filled in a simple manner.
- the check valve housing is formed by the connecting piece or as a separate component. It can thus also be provided that a unit consisting of the connecting piece and the check valve extends completely through the piston rod guide when installed.
- the extension direction of the check valve housing and/or the connection piece can be aligned axially and/or radially together or independently of one another.
- the connecting piece and the piston rod guide each have a design that corresponds at least in sections relative to one another, so that when the motor vehicle vibration damper is in the assembled state, they form a common form-fitting formation .
- the check valve housing of the check valve and the piston rod guide at least in sections each have an embodiment that corresponds relative to one another, so that when the motor vehicle vibration damper is assembled, they form a very simple common form-fitting formation.
- connection piece and the check valve and the piston rod guide each have, at least in sections, a design that corresponds relative to one another, so that when the motor vehicle vibration damper is assembled, they form a common form-fitting formation.
- the common form-fitting formation can be formed either by an axial and/or by a radial relative movement of their components to one another.
- FIG. 1 shows a sectional view of a generic motor vehicle vibration damper, in the area of the piston rod guide, according to the prior art
- Fig. 2 is a sectional view of a first exemplary variant of a motor vehicle vibration damper according to claim
- Fig. 3 is a sectional view of a further exemplary variant of a motor vehicle vibration damper according to claim
- Fig. 4 is a sectional view of a further exemplary variant of a motor vehicle vibration damper according to claim
- FIG. 1 shows in sections and in a sectional view a motor vehicle vibration damper 1 designed according to the prior art.
- This includes a damping cylinder 2 that is at least partially filled with a liquid damping medium.
- a piston rod 3 is mounted so that it can move axially with respect to the longitudinal axis L of the motor vehicle vibration damper 1 and partially protrudes through a piston rod guide 4 into the damping cylinder 2 or out of the damping cylinder 2 out.
- the piston rod guide 4 surrounds the piston rod 3 in the circumferential direction and seals with the aid of a guide attached to the piston rod 4 Piston rod seal 13 pushes the damper cylinder 2 outwards.
- a compensating chamber 6 is arranged, within which a gas-impermeable, shape-changing gas pressure tank 5, wherein the gas pressure tank 5 is positioned.
- a filling channel 7 consisting of several openings and/or bores connects the gas pressure container interior 12 to the outside environment and is primarily used for filling the gas pressure container 5 with a gas.
- the filling channel 7 is implemented directly in the piston rod guide 4, at least in sections.
- FIG. 1 also shows a check valve 8 connected at least indirectly to the gas pressure container 5, which closes or opens the filling channel 7 depending on a gas pressure difference between the gas pressure inside the gas pressure container interior and the gas pressure outside the gas pressure container interior 12.
- the check valve 8 is located directly in the piston rod guide 4 within the filling channel 7 .
- FIGS. 2 to 4 each show an example of a first possible embodiment variant of a motor vehicle vibration damper according to the invention.
- the motor vehicle vibration dampers designed according to FIGS. 2 to 4 provide that the check valve 8 is designed inside a gas-tight check valve housing, which is connected to the piston rod guide 4 in a form-fitting and/or cohesive manner.
- the gas pressure container 5 includes a connection piece 10 which is inseparably connected thereto.
- the connecting piece 10 and the piston rod guide 4 each have a corresponding design shape relative to one another and are connected to one another by an axial and/or radial relative movement, so that when they are assembled they form a common positive-locking formation.
- a sealing element 14 is arranged between the connection piece 10 and the piston rod guide 4 so that a damping medium, which is usually liquid, does not get into the check valve 8 .
- FIGS. 3 and 4 also provide that the gas pressure container 5 includes a connection piece 10 which is inseparably connected thereto. The difference from FIG. 2 is that the check valve 8 in FIGS.
- non-return valve 8 also has its own, separately designed non-return valve housing 9, which can be positively and/or cohesively connected to the connecting piece 10 to form a common structural unit 11, as shown in FIGS.
- FIG. 3 shows an embodiment according to which the structural unit 11 comprising the connecting piece 10 and the check valve 8 with the check valve housing 9 extends axially and/or radially only through part of the piston rod guide 4 .
- FIG. 4 shows an embodiment which provides that the structural unit 11 consisting of the connection piece 10 and the check valve 8 extends completely through the piston rod guide 4 in the installed state.
- the extension direction of the check valve housing 9 of the check valve 8 and/or of the connection piece 10 can be aligned axially and/or radially together or independently of one another.
- the check valve 8 is designed and arranged in such a way that its check valve housing 9 alone extends completely through the piston rod guide 4 in the installed state.
- the connection piece 10 is mounted outside of the piston rod guide 4, or when the check valve housing 9 is formed by the connection piece 10.
- both the connecting piece 10 and the check valve housing 9 of the check valve 8 and the piston rod guide 4 have, at least in sections, a corresponding configuration relative to one another, so that the connecting piece 10 and/or the check valve housing 9 of the check valve 8 when the motor vehicle vibration damper 1 is assembled form a common form-fit formation with each other and/or with the piston rod guide 4.
- All variants designed according to the invention have the advantage that they can be used independently of the gas permeability of the piston rod guide 4 to prevent an uncontrolled loss of gas.
- the piston rod guide 4 can be gas-impermeable or gas-permeable, for example using a sintering process, which would significantly reduce the manufacturing costs of the motor vehicle vibration damper 1 .
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202280032440.8A CN117280132A (zh) | 2021-05-04 | 2022-04-29 | 机动车减振器 |
KR1020237041147A KR20240004731A (ko) | 2021-05-04 | 2022-04-29 | 자동차 진동 댐퍼 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102021204442.5A DE102021204442A1 (de) | 2021-05-04 | 2021-05-04 | Kraftfahrzeugschwingungsdämpfer |
DE102021204442.5 | 2021-05-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022233723A1 true WO2022233723A1 (de) | 2022-11-10 |
Family
ID=81854850
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2022/061465 WO2022233723A1 (de) | 2021-05-04 | 2022-04-29 | Kraftfahrzeugschwingungsdampfer |
Country Status (4)
Country | Link |
---|---|
KR (1) | KR20240004731A (de) |
CN (1) | CN117280132A (de) |
DE (1) | DE102021204442A1 (de) |
WO (1) | WO2022233723A1 (de) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1044102A (en) * | 1964-03-25 | 1966-09-28 | Fichtel & Sachs Ag | Hydro-pneumatic spring suspension element |
US4700815A (en) * | 1984-01-20 | 1987-10-20 | Quinton Hazell Plc | Vehicle suspension system |
US6467760B2 (en) * | 2000-05-31 | 2002-10-22 | Mannesmann Sachs Ag | Filling valve for a gas bag |
US6648309B2 (en) * | 2001-02-01 | 2003-11-18 | Zf Sachs Ag | Self-pumping hydropneumatic suspension strut with internal ride-height control |
DE102004053401A1 (de) | 2004-11-05 | 2006-05-24 | Zf Friedrichshafen Ag | Federungssystem für Kraftfahrzeuge |
DE102005005789A1 (de) | 2005-02-09 | 2006-08-17 | Zf Friedrichshafen Ag | Druckbehälter in einem Schwingungsdämpfer |
DE102006011397B3 (de) | 2006-03-11 | 2007-06-21 | Zf Friedrichshafen Ag | Federungssystem für Kraftfahrzeuge |
DE102016208454A1 (de) | 2016-05-17 | 2017-11-23 | Thyssenkrupp Ag | Schwingungsdämpfer mit Füllventil für ein Kraftfahrzeug |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2850276A (en) | 1955-04-11 | 1958-09-02 | Gen Motors Corp | Hydro-pneumatic suspension unit |
DE1117412B (de) | 1959-02-27 | 1961-11-16 | Fichtel & Sachs Ag | Hydropneumatische Abfederung, insbesondere fuer Kraftfahrzeuge |
DE10304915B4 (de) | 2003-02-07 | 2007-04-19 | Zf Sachs Ag | Federungssystem für Kraftfahrzeuge |
DE102007058544A1 (de) | 2007-02-23 | 2008-08-28 | Zf Friedrichshafen Ag | Druckbehälter |
DE102007042865B4 (de) | 2007-09-08 | 2011-09-22 | Zf Friedrichshafen Ag | Selbstpumpendes hydropneumatisches Federbein |
-
2021
- 2021-05-04 DE DE102021204442.5A patent/DE102021204442A1/de active Pending
-
2022
- 2022-04-29 KR KR1020237041147A patent/KR20240004731A/ko unknown
- 2022-04-29 WO PCT/EP2022/061465 patent/WO2022233723A1/de active Application Filing
- 2022-04-29 CN CN202280032440.8A patent/CN117280132A/zh active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1044102A (en) * | 1964-03-25 | 1966-09-28 | Fichtel & Sachs Ag | Hydro-pneumatic spring suspension element |
US4700815A (en) * | 1984-01-20 | 1987-10-20 | Quinton Hazell Plc | Vehicle suspension system |
US6467760B2 (en) * | 2000-05-31 | 2002-10-22 | Mannesmann Sachs Ag | Filling valve for a gas bag |
US6648309B2 (en) * | 2001-02-01 | 2003-11-18 | Zf Sachs Ag | Self-pumping hydropneumatic suspension strut with internal ride-height control |
DE102004053401A1 (de) | 2004-11-05 | 2006-05-24 | Zf Friedrichshafen Ag | Federungssystem für Kraftfahrzeuge |
DE102005005789A1 (de) | 2005-02-09 | 2006-08-17 | Zf Friedrichshafen Ag | Druckbehälter in einem Schwingungsdämpfer |
DE102006011397B3 (de) | 2006-03-11 | 2007-06-21 | Zf Friedrichshafen Ag | Federungssystem für Kraftfahrzeuge |
DE102016208454A1 (de) | 2016-05-17 | 2017-11-23 | Thyssenkrupp Ag | Schwingungsdämpfer mit Füllventil für ein Kraftfahrzeug |
Also Published As
Publication number | Publication date |
---|---|
DE102021204442A1 (de) | 2022-11-10 |
KR20240004731A (ko) | 2024-01-11 |
CN117280132A (zh) | 2023-12-22 |
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