WO2011116739A1 - Lagerdämpfungselement - Google Patents
Lagerdämpfungselement Download PDFInfo
- Publication number
- WO2011116739A1 WO2011116739A1 PCT/DE2011/000215 DE2011000215W WO2011116739A1 WO 2011116739 A1 WO2011116739 A1 WO 2011116739A1 DE 2011000215 W DE2011000215 W DE 2011000215W WO 2011116739 A1 WO2011116739 A1 WO 2011116739A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bearing
- elastic element
- outer ring
- bearing outer
- housing
- Prior art date
- Legal status (The legal status 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 status listed.)
- Ceased
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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
- F16C27/04—Ball or roller bearings, e.g. with resilient rolling bodies
Definitions
- the invention relates to a bearing element for a rotatable mounting of a shaft in a housing, with a circular cylindrical outer surface bearing outer ring, within which the shaft is mounted, and a rigidly connected to the housing, the bearing outer ring surrounding inner surface, wherein between the outer surface of the Bearing outer ring and the inner surface of the housing at least a first elastic element is provided, which allows a limited relative radial movement between the housing and the bearing outer ring.
- Bearing elements usually form a connection between mechanically separated structural parts. Operational excitations can lead to the generation of unwanted vibrations or noises, the bearing points or bearing elements frequently being the main transmission paths for disturbing vibrations or noises. In motor vehicles, such an acoustic effect also comes from, for example, the CVT chain used in continuously variable transmissions (CVT), which can oscillate like a string in the tensioned strand or strand. The vibrations are transmitted via the bearing on the gear housing and cause corresponding disturbing noise emissions, especially in the interior of the vehicle. Therefore, technical solutions have been developed that achieve vibration isolation or a reduction of vibrations and thus also of acoustic emissions. These devices provide a decoupling of the housing from the fixed bearing of the drive shaft by means of an acoustic decoupling element.
- CVT continuously variable transmissions
- DE 199 58 073 A1 describes a continuously variable conical-pulley transmission, which has a drive-side and a driven-side cone pulley pair as well as a belting device for torque transmission.
- a device for damping the noise is provided, which emanates from the acted upon moment conical-pulley gear.
- a noise damping device is provided at the bearing points, which for acoustic insulation of the conical disks opposite to the bearing points Ensures components.
- the noise damping device is designed as an annular construction part formed with a substantially U-shaped cross section and has a receiving space for a damping insert.
- This noise-damping layer may consist of an elastomeric synthetic material, a rubber material or a metallic material.
- a disadvantage of this damping device is that these layers change their elastic properties during operation of the bearing and of the transmission, so that they do not have the same acoustic results over the service life.
- damping devices can be used only under certain conditions of use. Often, their efficiency is in need of improvement.
- EP 1 908 972 A2 describes a decoupling device for mounting a shaft on a base body which uses one or more radial wave springs.
- this device used in particular in a shaft of a belt with a belt acting as a belt pulley Umschlingungsgetriebes between the outer surface of a bearing outer ring and the inner surface of a housing receiving a housing at least one radial wave spring is arranged, the elastic deformation under a limited relative radial movement between the inner surface and the outer surface allows.
- Such a radial wave spring usually consists of a spring ring, which surrounds at least a partial circumference of a circular cylindrical outer surface and has wave crests and wave troughs in the circumferential direction, which come into contact with the inner surface of the receptacle of the housing or with the outer surface of the bearing outer ring.
- these radial wave springs have slots which serve to adjust the radial stiffness. The slots are distributed over the circumference and often extend to axially outboard shelves or side walls.
- the object of the invention is to develop a bearing element for a rotatable mounting of a shaft in a housing such that over the life of very good a- acoustic decoupling with relatively simple serial production can be achieved.
- a bearing element for rotatably supporting a shaft in a housing, with a circular cylindrical outer surface bearing outer ring, within which the shaft is mounted, and a rigidly connected to the housing, the bearing outer ring surrounding inner surface, wherein between the outer surface of the bearing outer ring and the inner surface the housing at least a first elastic element is provided, which allows a limited relative radial movement between the housing and the bearing outer ring, according to the invention at least a second elastic element is provided, which is arranged radially between the first elastic member and the outer surface of the bearing ring and supported on the one hand on the bearing outer ring and on the other hand on the first elastic element.
- the first elastic element is annular with radially inwardly directed side walls.
- the second elastic element is annularly formed with radially outwardly directed legs.
- the second elastic element are based on its two legs and the first elastic element over a total axially parallel extending bottom in the radial direction elastically yielding to each other.
- the second elastic element preferably has a substantially V-shaped cross-section, the bottom of which is arranged in a circumferential recess of the bearing outer ring.
- the outer bearing ring has axially outwardly of the recess radially outwardly directed shoulders, on which the side walls of the first elastic element can be brought axially outward to a contact in the axial direction.
- a radial height of the legs of the second elastic element is greater than a radial height of the shoulders of the bearing outer ring.
- the first elastic element which bears radially on the outside of the inner surface of the housing, in each case has a slight slope / curvature at its transition from the bottom to the side walls.
- the bottom of the second elastic element is located in the center of the bearing outer ring when viewed in the axial direction.
- the two elastic elements are designed as spring elements.
- the figure shows a schematic diagram of a bearing element according to the invention.
- the bearing element according to the invention may for example be a roller bearing, which is arranged in a known manner in the drive train of a motor vehicle for supporting the drive shaft in a housing.
- the principle is explained below using the example of a bearing outer ring. But it is also applicable for example for a bearing inner ring.
- the bearing element has a bearing outer ring 1 with a circular cylindrical outer surface, which is arranged radially opposite a first elastic element 2.
- the elastic element 2 is here formed by an annular, on an inner surface of a housing (not shown), spring element.
- the elastic element 2 has a total axis-parallel bottom 2.1, to which in each case a slightly radially inwardly and after a- axially outwardly extending slope / vault 2.2 connects. Following the bevel / bulge 2.2, the elastic element 2 has axially on the outside a radially inwardly directed side wall 2.3.
- the second elastic element 3 is preferably also formed as a spring element and shows in cross-section a substantially V-shaped configuration, with a bottom 3.1 and two obliquely arranged to the radial direction legs 3.2, wherein the bottom 3.1 is supported on the outer surface of the bearing outer ring 1 ,
- the bearing outer ring 1 a circumferential, formed in the form of a wide groove recess 1.1, in which the bottom 3.1 of the second elastic element 3 is preferably received axially in the middle.
- Axially outside the recess 1.1 of the bearing outer ring 1 is bounded in each case by a radially outwardly directed shoulder 1.2.
- the radially inwardly directed side walls 2.3 of the first elastic element 2 can be brought axially outward for engagement in the axial direction.
- the two legs 3.2 of the second elastic element 3 are here directed obliquely radially outward and axially outward. But it is also possible, for example, a more U-shaped design of the second elastic member 3, with two radially outwardly directed legs 3.2 and a slightly wider running bottom 3.1. In any case, the legs are 3.2 on the inside of the first elastic element 2, preferably at the bottom 2.1 at. Thus, the first elastic element 2 is based on its bottom 2.1 and the second elastic element 3 via its two legs 3.2 in the radial direction elastically yielding each other. To a caused by an elastic deformation relative To allow radial movement, the radial height h of the legs 3.2 of the second elastic element 3 is greater than the radial height H of the shoulders 1.2 of the bearing outer ring. 1
- An advantage of the bearing element according to the invention is that the support surface is now axially inside, namely at the inner diameter of the second elastic element 3.
- the second elastic element 3 takes over the decoupling function, so to speak, while the first elastic element 2 undergoes an axial guidance through the side walls 2.3.
- energy is additionally absorbed during compression of the first elastic element 2 via its side walls 2.3, since these perform a radial relative movement with respect to the bearing outer ring 1.
- the bearing element according to the invention represents a solution which is easy to implement with at least the same elastic properties compared to the prior art and thus brings a significant cost savings. It is less sensitive to manufacturing tolerances, wherein the bearing outer ring 1 can be used almost unchanged.
- the bearing element of the invention also shows a great adaptability to different requirements in terms of radial stiffness. This high variability can be achieved by appropriate adaptations and designs, in particular of the second elastic element 3, for example by a change in the height h of the legs 3.2 of the spring element 3. There are no production-complicating or manufacturing costs increasing slots are introduced. Nevertheless, a radial rigidity of 150,000 N / mm +/- 20000 N / mm can be achieved.
- the production of preferably made of steel elastic elements is preferably carried out by deep drawing.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Support Of The Bearing (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE112011100984T DE112011100984A5 (de) | 2010-03-22 | 2011-03-18 | Lagerelement |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010012277.7 | 2010-03-22 | ||
| DE102010012277 | 2010-03-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2011116739A1 true WO2011116739A1 (de) | 2011-09-29 |
Family
ID=44223796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE2011/000215 Ceased WO2011116739A1 (de) | 2010-03-22 | 2011-03-18 | Lagerdämpfungselement |
Country Status (2)
| Country | Link |
|---|---|
| DE (2) | DE102011012913A1 (de) |
| WO (1) | WO2011116739A1 (de) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5062721A (en) * | 1989-04-28 | 1991-11-05 | Nippon Seiko Kabushiki Kaisha | Rolling bearing with sleeve |
| DE19958073A1 (de) | 1998-12-16 | 2000-06-21 | Luk Getriebe Systeme Gmbh | Kegelscheibenumschlingungsgetriebe |
| US6149382A (en) * | 1997-03-06 | 2000-11-21 | Leybold Vakuum Gmbh | Vacuum pump with shaft bearing |
| DE20012676U1 (de) * | 1999-10-21 | 2000-12-14 | Skf Gmbh, 97421 Schweinfurt | Verbindung eines Lagerringes mit einem Trägerteil |
| US20030202726A1 (en) * | 2002-04-04 | 2003-10-30 | Robb Scott B. | Center bearing assembly including a support member containing a rheological fluid |
| US20040258338A1 (en) * | 2003-04-07 | 2004-12-23 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Transmission bearing noise attenuation device |
| EP1908972A2 (de) | 2002-02-28 | 2008-04-09 | LuK Lamellen und Kupplungsbau Beteiligungs KG | Entkopplungsvorrichtung für eine Lagerung einer Welle an einem Grundkörper sowie Radialwellfeder |
-
2011
- 2011-03-03 DE DE201110012913 patent/DE102011012913A1/de not_active Withdrawn
- 2011-03-18 DE DE112011100984T patent/DE112011100984A5/de not_active Withdrawn
- 2011-03-18 WO PCT/DE2011/000215 patent/WO2011116739A1/de not_active Ceased
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5062721A (en) * | 1989-04-28 | 1991-11-05 | Nippon Seiko Kabushiki Kaisha | Rolling bearing with sleeve |
| US6149382A (en) * | 1997-03-06 | 2000-11-21 | Leybold Vakuum Gmbh | Vacuum pump with shaft bearing |
| DE19958073A1 (de) | 1998-12-16 | 2000-06-21 | Luk Getriebe Systeme Gmbh | Kegelscheibenumschlingungsgetriebe |
| DE20012676U1 (de) * | 1999-10-21 | 2000-12-14 | Skf Gmbh, 97421 Schweinfurt | Verbindung eines Lagerringes mit einem Trägerteil |
| EP1908972A2 (de) | 2002-02-28 | 2008-04-09 | LuK Lamellen und Kupplungsbau Beteiligungs KG | Entkopplungsvorrichtung für eine Lagerung einer Welle an einem Grundkörper sowie Radialwellfeder |
| US20030202726A1 (en) * | 2002-04-04 | 2003-10-30 | Robb Scott B. | Center bearing assembly including a support member containing a rheological fluid |
| US20040258338A1 (en) * | 2003-04-07 | 2004-12-23 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Transmission bearing noise attenuation device |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102011012913A1 (de) | 2011-09-22 |
| DE112011100984A5 (de) | 2013-04-11 |
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