EP2920478A1 - Bearing arrangement - Google Patents

Bearing arrangement

Info

Publication number
EP2920478A1
EP2920478A1 EP13791807.4A EP13791807A EP2920478A1 EP 2920478 A1 EP2920478 A1 EP 2920478A1 EP 13791807 A EP13791807 A EP 13791807A EP 2920478 A1 EP2920478 A1 EP 2920478A1
Authority
EP
European Patent Office
Prior art keywords
bearing
carrier
arrangement according
support portion
ring
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.)
Withdrawn
Application number
EP13791807.4A
Other languages
German (de)
French (fr)
Inventor
Burkard Beck
Alexander Dilje
Hans-Jürgen FRIEDRICH
Helmut Hauck
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SKF AB
Original Assignee
SKF AB
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 SKF AB filed Critical SKF AB
Publication of EP2920478A1 publication Critical patent/EP2920478A1/en
Withdrawn legal-status Critical Current

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
    • F16C25/00—Bearings for exclusively rotary movement adjustable for wear or play
    • F16C25/06—Ball or roller bearings
    • F16C25/08—Ball or roller bearings self-adjusting
    • F16C25/083—Ball or roller bearings self-adjusting with resilient means acting axially on a race ring to preload the bearing
    • 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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
    • 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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/24—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly
    • F16C19/26—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with a single row of rollers
    • 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
    • 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
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/042—Housings for rolling element bearings for rotary movement
    • F16C35/045—Housings for rolling element bearings for rotary movement with a radial flange to mount the housing
    • 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
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F16C35/07—Fixing them on the shaft or housing with interposition of an element
    • F16C35/077—Fixing them on the shaft or housing with interposition of an element between housing and outer race ring
    • 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
    • F16C2220/00—Shaping
    • F16C2220/02—Shaping by casting
    • F16C2220/04—Shaping by casting by injection-moulding
    • 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
    • F16C2220/00—Shaping
    • F16C2220/40—Shaping by deformation without removing material
    • F16C2220/42—Shaping by deformation without removing material by working of thin walled material such as sheet or tube
    • 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
    • F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
    • F16C2226/50—Positive connections
    • F16C2226/62—Positive connections with pins, bolts or dowels
    • 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
    • F16C2380/00—Electrical apparatus
    • F16C2380/26—Dynamo-electric machines or combinations therewith, e.g. electro-motors and generators

Definitions

  • the invention relates to a bearing arrangement with floating bearing function, with which a first component, in particular a shaft, relative to a second component, in particular a housing, rotatably, but can be mounted displaceably in the axial direction.
  • Loslagerungen of the generic type are required in a variety of applications in which a shaft relative to a housing must be set both radially and axially rotatable.
  • the one bearing is designed as a fixed bearing, d. H.
  • both radial and axial forces are transmitted via a bearing from the shaft to the housing.
  • the other bearing is designed as a floating bearing, d. H. here only radial forces are transmitted; in the axial direction, the bearing has a mobility, so that no axial forces can be transmitted.
  • a fixed-lot storage of an electrical machine As an application example is called a fixed-lot storage of an electrical machine.
  • the bearing of a rotor relative to a housing is often carried out for reasons of cost by means of ball bearings, ie both bearings - the fixed bearing side and the floating bearing side - each have a ball bearing.
  • a sliding seat between the bearing outer ring and the housing bore is accordingly provided, so that said movable bearing function is given. It is disadvantageous in this case first that it can come to vibrations in this concept, which executes the loose-fitting bearing outer ring in the axial direction. This affects the smooth running of the storage and the service life of the same.
  • Another problem is that, in particular when the housing is made of light metal, it may come to a shrinkage or burial of the bearing outer ring in the housing bore.
  • the invention has for its object to provide a bearing assembly of the type mentioned above, which ensures a low-vibration and low-wear storage, which, however, also characterized by a compact and easy-to-install design.
  • the bearing arrangement comprises: a bearing, which is designed to transmit radial and axial forces, wherein at least one of the bearing rings has an at least partially cylindrical outer or inner surface, a bearing carrier, the a support portion having an at least partially cylindrical seat surface, wherein the support portion for receiving a bearing ring with its cylindrical outer or inner surface is formed, wherein between the cylindrical seat and the cylindrical outer or inner surface of the bearing ring, a sliding seat is formed between the support portion and the bearing ring allows a relative displacement in the axial direction, wherein the bearing support centering means, with which it can be centered relative to one of the components, wherein the bearing support has fastening means with which it w fixed to one of the components w can ground, and wherein on or in the bearing support a spring element is arranged, which is designed to generate a force acting in the axial direction of the spring force between the bearing support and the carrier portion held by the bearing ring. It is preferred that the bearing outer ring, which is held by the
  • the bearing is preferably designed as a roller bearing, in particular as a deep groove ball bearing.
  • the bearing carrier may have a radially extending mounting flange, with which it can be attached to the one component by means of the fastening means.
  • a stop for limiting the axial mobility of the bearing ring received by the carrier section can be arranged relative to the carrier section.
  • the fastening means are preferably screws.
  • the centering means may be formed by a shoulder which is formed in the bearing carrier and which engages in a congruent formation in one of the components, in particular in the housing.
  • the spring element can be formed by a material section which is formed from the material of the bearing carrier. However, it can also be designed as a separate component which is mounted between the support ring carried by the bearing section and the bearing carrier.
  • the bearing carrier and the bearing together with the spring element and optionally the stop may be formed as a preassembled unit.
  • the bearing carrier consists according to a preferred embodiment of the invention of a non-cutting formed sheet metal part, in particular of a deep-drawn sheet metal part. But this can also be attached plastic material.
  • the proposed bearing arrangement is designed as a preassembled or at least partially preassembled bearing unit, which also ensures the axial mobility in addition to the pure bearing function, ie the floating bearing function.
  • the logistics costs can be significantly reduced, which in turn reduces costs.
  • the proposed floating bearing is characterized by a strong vibration damping effect.
  • Standard rolling bearings in particular deep groove ball bearings, can be used. This results in economic benefits.
  • the flange-shaped bearing carrier ensures the absorption of radial bearing forces safely; there is a simple attachment to a housing, eg. B. to a motor housing, for which preferably a screw connection is provided.
  • the flange may be made of sheet metal, wherein preferably only forming operations, punching operations and bending operations are used in its manufacture.
  • the bearing carrier has an integrated or adapted centering function, which represents a significant ease of assembly. Accordingly, the security against assembly errors is lower, which in turn acts cost-dampening.
  • the bearing carrier is produced exclusively by forming technology, preferably made of deep-drawn steel.
  • a plastic molding process is used as the manufacturing method for the bearing carrier, additional assembly processes can be avoided.
  • the integration of various other assembly processes can take place during the main time of, for example, an injection molding process. This results in a very cost-effective production.
  • Another advantage is achieved with multi-component molding processes, namely lent the placement of different material depending on the particular function to be performed by the complete bearing arrangement.
  • the spring and / or damping element are also adapted or integrated on or in the bearing carrier.
  • the effective direction of the suspension or damping is preferably provided in the axial direction, but also a radially acting spring effect is not excluded.
  • an additional handling effort for the user of the bearing assembly can be omitted. If identical materials (steel) are provided at the interface between the bearing ring (outer ring) and the bearing carrier, it is advantageous to have the same thermal behavior, so that no temperature-induced changes in the exposure (that is to say the sliding seat) are to be feared.
  • embodiments of the invention are shown. Show it:
  • FIG. 1 is a schematic radial section of a bearing arrangement with which a shaft part is mounted relative to a housing with movable bearing function according to a first embodiment of the invention
  • FIG. 2 shows the bearing arrangement in the representation as FIG. 1 according to a second embodiment of the invention
  • FIG. 3 shows the bearing arrangement in the representation as in FIG. 1 according to a third embodiment of the invention
  • FIG. 4 shows the bearing arrangement in the illustration as in FIG. 1 according to a fourth embodiment of the invention
  • FIG. 5 shows the bearing arrangement in the illustration as in FIG. 1 according to a fifth embodiment of the invention
  • FIG. 6 shows the bearing arrangement in the illustration as FIG. 1 according to a sixth embodiment of the invention, FIG. the detail "Z" of FIG. 6 and
  • FIG. 8 shows the bearing arrangement in the representation as in FIG. 1 according to a seventh embodiment of the invention.
  • FIG. 1 a first embodiment of the bearing assembly 1 according to the invention is shown.
  • a shaft 2 is mounted here by means of a rolling bearing 4 in a housing 3.
  • the bearing assembly 1 is designed as a floating bearing, d. H. Forces in the radial direction r are transmitted from the shaft 2 into the housing 3, but not forces in the axial direction a.
  • the outer ring 5 and the inner ring 6 of the designed as a deep groove ball bearing roller bearing 4 are indicated only schematically. Both the outer ring 5 and the inner ring 6 have a cylindrical outer surface 7 and a cylindrical inner surface 8. The cylindrical inner surface 8 of the inner ring 6 is seated on a corresponding cylindrical seat portion of the shaft 2. However, sits the cylindrical outer surface 7 of the outer ring 5 on the cylindrical Seat 11 of a support portion 10, which is part of a bearing support 9. Between the outer cylindrical surface 7 of the outer ring 5 and the cylindrical seat surface 11 of the support portion 10 is clearance fit, d. H. By means of a sliding seat, the outer ring 5 can be displaced in the axial direction a on the support section 10.
  • the bearing carrier 9 also has a fastening flange 15, and also a shoulder 17 (in its right axial end region).
  • This shoulder 17 is designed to fit a molding 18 in the housing 3, so that the shoulder 17 forms a centering means 12, with which the bearing carrier 9 can be centered on the housing 3.
  • the bearing carrier 9 If the bearing carrier 9 is inserted with its shoulder 17 into the molding 18 in the housing 3, the mounting flange 15 bears against the housing 3 with an end face, and is fastened to the housing 3 in the form of screws by means of only indicated fastening means 13.
  • axial end portion of the bearing support 9 has a radially inwardly extending inner portion 19 which a the rolling bearing 4 facing end face up has.
  • a spring element 14 is placed - here in the form of a coil spring - which exerts an axial biasing force on the outer ring 5. Since the bearing 4 is designed as a deep groove ball bearing and thus can transmit both radial and axial forces, the bearing 4 is pressed with the inner ring 6 against a collar 20 on the shaft 2.
  • the bearing support 9 is formed as a solid flange housing, wherein it is preferably made of steel.
  • a bearing support 9 a formed (steel) sheet metal part is used.
  • the stop 16 is formed here by an inwardly bent portion of the support portion 10.
  • the contact surface for the spring element 14 is formed by a support ring 21 which is welded or soldered to the bearing support 9.
  • centering means 12 are designed as dowel pins.
  • a further variant is shown.
  • a bearing support 9 a sheet metal part is used, but here two folded against each other and axially extending parts 10 'and 10 "has (inverted cup), which together form the support portion 10.
  • the spring element 14 is designed differently than described above. Namely, it is formed by a bent end portion of the one part 10 'of the support portion 10 (similar to a plate spring). To increase the elasticity of this spring section, it may be provided with slots which extend in particular radially.
  • the bearing support 9 consists of a bent sheet metal, which forms the support portion 10 and the mounting flange 15.
  • This sheet has been surrounded, for example by injection molding with a plastic mass to obtain the shape, which can be seen in the radial section in Fig. 4.
  • the plastic material here also forms the shoulder 17, which forms the centering means 12.
  • the spring element 14 is formed by plastic material.
  • the sketched contour is in this example in the same manufacturing process as the bearing carrier 9 and thus made of the same plastic material and can also - in order to increase the elasticity of the spring element 14 - be provided with (radial) slots.
  • a multi-component molding process may also be considered for the design of the spring element, which has the advantage that a unit with different material properties can be realized.
  • FIG. 5 a solution similar to FIG. 4 can be seen.
  • a sheet metal part which forms the support portion 10, and the spring element 14.
  • This plate spring-like region can be slotted again to increase the elasticity.
  • the mounting flange 15 may be formed as a disc, these and the support portion 10 by plastic material, which forms the further bearing support 9, are interconnected. This plastic material here also forms the shoulder 17 in order to realize the centering means 12.
  • FIG. 6 and FIG. 7 A further variant is shown in FIG. 6 and FIG. 7.
  • the plastic material surrounding the sheet metal section 10 and 15 is here shaped such that a plurality of receiving chambers 22 arranged distributed around the circumference are formed, in which a spring element 14 can be placed. So that the spring element 14 is held in the receiving chamber 22, nubs 23 or similarly shaped elements may be formed, which form an undercut and hold the spring element 14. In the present case, therefore spring elements 14 are used in the form of separate components (of which in Fig. 6 only one is outlined).
  • the centering means 12 is again formed by a shoulder in the plastic material.
  • a stop 16 is again provided, which prevents the bearing 4 on the axial sliding out.
  • the stop 16 is formed by an inwardly bent end portion of the support portion 10.
  • FIG. 8 A final variant is shown in FIG. 8.
  • a bearing carrier 9 a pure sheet metal part used.
  • a sheet metal section formed in the manner of an inverted cup with the parts 10 'and 10 "forms the support section 10 which receives the bearing 4 (here again without stop 16) .
  • the part 10" then merges into the fastening flange 15.
  • the extension of the part 10 ' provides the centering means 12, ie the (to the right) outstanding portion of the part 10' can be inserted into the bore in the housing 3 to center the bearing support 9.
  • At the (right) end of the part 10 ' is a radially inwardly bent portion, which is the holder for spring elements 14 (of which in Fig. 8 only one is outlined).
  • the solution without stop 16 is outlined for the outer ring of the bearing 4, which would be optional but possible.
  • FIGS. 3, 4 and 5 applies.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Support Of The Bearing (AREA)
  • Mounting Of Bearings Or Others (AREA)

Abstract

The invention relates to a bearing arrangement (1) with a movable bearing function, with which a first component (2) can be mounted rotatably relative to a second component (3), but displaceably in the axial direction (a). In order to provide a low-vibration and low-wear solution, the invention makes provision for the bearing arrangement to have: a bearing (4), wherein at least one of the bearing rings (5, 6) has a cylindrical outer or inner surface (7, 8), a bearing carrier (9) which has a carrier section (10) with a cylindrical seat surface (11), wherein a sliding seat is formed between the cylindrical seat surface and the cylindrical outer or inner surface (7) of the bearing ring (5), wherein the bearing carrier has centring means (12) with which said bearing carrier can be centred relative to one of the components (2, 3), wherein the bearing carrier has fastening means (13) with which said bearing carrier can be fastened to one of the components, and wherein a spring element (14) is arranged on or in the bearing carrier, the spring element being designed to produce a spring force, which is effective in the axial direction, between the bearing carrier and the bearing ring held by the carrier section.

Description

B e s c h r e i b u n g  Description
Lageranordnung Die Erfindung betrifft eine Lageranordnung mit Loslagerfunktion, mit der ein erstes Bauteil, insbesondere eine Welle, relativ zu einem zweiten Bauteil, insbesondere einem Gehäuse, drehbar, aber in axiale Richtung verschieblich gelagert werden kann. The invention relates to a bearing arrangement with floating bearing function, with which a first component, in particular a shaft, relative to a second component, in particular a housing, rotatably, but can be mounted displaceably in the axial direction.
Loslagerungen der gattungsgemäßen Art werden in einer Vielzahl von Anwendungen be- nötigt, in denen eine Welle relativ zu einem Gehäuse sowohl radial als auch axial drehbar festgelegt werden muss. Die eine Lagerstelle wird als Festlager ausgebildet, d. h. hier werden sowohl radiale als auch axiale Kräfte über ein Lager von der Welle auf das Gehäuse übertragen. Indes wird zwecks Erhalt einer statisch bestimmten Lagerung die andere Lagerstelle als Loslager ausgebildet, d. h. hier werden nur radiale Kräfte übertragen; in axiale Richtung hat das Lager eine Verschieblichkeit, so dass keine axialen Kräfte übertragen werden können. Loslagerungen of the generic type are required in a variety of applications in which a shaft relative to a housing must be set both radially and axially rotatable. The one bearing is designed as a fixed bearing, d. H. Here, both radial and axial forces are transmitted via a bearing from the shaft to the housing. However, in order to obtain a statically determined storage, the other bearing is designed as a floating bearing, d. H. here only radial forces are transmitted; in the axial direction, the bearing has a mobility, so that no axial forces can be transmitted.
Als Anwendungsbeispiel sei eine Fest-Los-Lagerung einer elektrischen Maschine genannt. Die Lagerung eines Rotors relativ zu einem Gehäuse wird aus Kostengründen häufig mit- tels Kugellagerung ausgeführt, d. h. beide Lagerstellen - die Festlagerseite und die Loslagerseite - weisen je ein Kugellager auf. An der Loslagerstelle wird demgemäß ein Schiebesitz zwischen dem Lageraußenring und der Gehäusebohrung vorgesehen, so dass besagte Loslagerfunktion gegeben ist. Nachteilig ist es hierbei zunächst, dass es bei dieser Konzeption zu Schwingungen kommen kann, die der lose sitzende Lageraußenring in axiale Richtung ausführt. Dies beeinträchtigt die Laufruhe der Lagerung und die Gebrauchsdauer derselben. Ein anderes Problem besteht darin, dass es insbesondere dann, wenn das Gehäuse aus Leichtmetall besteht, zu einem Einlaufen bzw. Eingraben des Lageraußenrings in die Gehäusebohrung kommen kann. As an application example is called a fixed-lot storage of an electrical machine. The bearing of a rotor relative to a housing is often carried out for reasons of cost by means of ball bearings, ie both bearings - the fixed bearing side and the floating bearing side - each have a ball bearing. At the movable bearing point, a sliding seat between the bearing outer ring and the housing bore is accordingly provided, so that said movable bearing function is given. It is disadvantageous in this case first that it can come to vibrations in this concept, which executes the loose-fitting bearing outer ring in the axial direction. This affects the smooth running of the storage and the service life of the same. Another problem is that, in particular when the housing is made of light metal, it may come to a shrinkage or burial of the bearing outer ring in the housing bore.
Es ist daher bekannt geworden, Federelemente zwischen dem Gehäuse und dem Lageraußenring einzubauen, die in axiale Richtung eine Federkraft erzeugen. Dem Problem des Einlaufens kann dadurch begegnet werden, dass der Lageraußenring nicht direkt in der Gehäusebohrung, sondern indirekt über eine Stahlhülse eingebaut wird. It has therefore become known to incorporate spring elements between the housing and the bearing outer ring, which generate a spring force in the axial direction. The problem of shrinkage can be countered by the fact that the bearing outer ring is not installed directly in the housing bore, but indirectly via a steel sleeve.
In beiden Fällen werden spezielle Bauteile benötigt, die vor allem unter Montagegesichts- punkten Schwierigkeiten machen können. Der Zusammenbau der Lageranordnung wird hierdurch schwierig und mitunter nur durch Fachpersonal möglich. Der Erfindung liegt die A u f g a b e zugrunde, eine Lageranordnung der eingangs genannten Art zu schaffen, die eine schwingungsarme und verschleißarme Lagerung sicherstellt, die sich darüber hinaus aber durch eine kompakte und einfach zu montierende Bauweise auszeichnet. Die L ö s u n g dieser Aufgabe durch die Erfindung ist dadurch gekennzeichnet, dass die Lageranordnung aufweist: ein Lager, das zur Übertragung radialer und axialer Kräfte ausgebildet ist, wobei zumindest einer der Lagerringe eine zumindest teilweise zylindrische Außen- oder Innenfläche aufweist, einen Lagerträger, der einen Trägerabschnitt mit einer zumindest teilweise zylindrischen Sitzfläche aufweist, wobei der Trägerabschnitt zur Auf- nähme eines Lagerrings mit seiner zylindrischen Außen- oder Innenfläche ausgebildet ist, wobei zwischen der zylindrischen Sitzfläche und der zylindrischen Außen- oder Innenfläche des Lagerrings ein Schiebesitz ausgebildet ist, der zwischen dem Trägerabschnitt und dem Lagerring eine relative Verschiebung in axiale Richtung zulässt, wobei der Lagerträger Zentriermittel aufweist, mit der er relativ zu einem der Bauteile zentriert werden kann, wobei der Lagerträger Befestigungsmittel aufweist, mit denen er an einem der Bauteile befestigt werden kann, und wobei am oder im Lagerträger ein Federelement angeordnet ist, das zur Erzeugung einer in axiale Richtung wirksamen Federkraft zwischen dem Lagerträger und dem vom Trägerabschnitt gehaltenen Lagerring ausgebildet ist. Dabei ist es bevorzugt der Lageraußenring, der vom Lagerträger gehalten wird. In both cases, special components are required, which can cause difficulties especially with regard to assembly. The assembly of the bearing assembly is thereby difficult and sometimes only by skilled personnel possible. The invention has for its object to provide a bearing assembly of the type mentioned above, which ensures a low-vibration and low-wear storage, which, however, also characterized by a compact and easy-to-install design. The solution to this problem by the invention is characterized in that the bearing arrangement comprises: a bearing, which is designed to transmit radial and axial forces, wherein at least one of the bearing rings has an at least partially cylindrical outer or inner surface, a bearing carrier, the a support portion having an at least partially cylindrical seat surface, wherein the support portion for receiving a bearing ring with its cylindrical outer or inner surface is formed, wherein between the cylindrical seat and the cylindrical outer or inner surface of the bearing ring, a sliding seat is formed between the support portion and the bearing ring allows a relative displacement in the axial direction, wherein the bearing support centering means, with which it can be centered relative to one of the components, wherein the bearing support has fastening means with which it w fixed to one of the components w can ground, and wherein on or in the bearing support a spring element is arranged, which is designed to generate a force acting in the axial direction of the spring force between the bearing support and the carrier portion held by the bearing ring. It is preferred that the bearing outer ring, which is held by the bearing carrier.
Das Lager ist bevorzugt als Wälzlager, insbesondere als Rillenkugellager, ausgebildet. The bearing is preferably designed as a roller bearing, in particular as a deep groove ball bearing.
Der Lagerträger kann einen sich radial erstreckenden Befestigungsflansch aufweisen, mit dem er an dem einen Bauteil mittels der Befestigungsmittel befestigt werden kann. The bearing carrier may have a radially extending mounting flange, with which it can be attached to the one component by means of the fastening means.
In einem axialen Endbereich des Trägerabschnitts kann ein Anschlag zur Begrenzung der axialen Beweglichkeit des vom Trägerabschnitt aufgenommenen Lagerrings relativ zum Trägerabschnitt angeordnet sein. In an axial end region of the carrier section, a stop for limiting the axial mobility of the bearing ring received by the carrier section can be arranged relative to the carrier section.
Die Befestigungsmittel sind bevorzugt Schrauben. The fastening means are preferably screws.
Die Zentriermittel können durch einen Absatz gebildet werden, der im Lagerträger ausgebildet ist und der in eine kongruente Ausformung in einem der Bauteile eingreift, insbesondere im Gehäuse. The centering means may be formed by a shoulder which is formed in the bearing carrier and which engages in a congruent formation in one of the components, in particular in the housing.
Das Federelement kann durch einen Materialabschnitt gebildet werden, der aus dem Material des Lagerträgers ausgeformt ist. Es kann aber auch als separates Bauteil ausgebildet sein, das zwischen dem vom Trägerabschnitt getragenen Lagerring und dem Lagerträger montiert ist. The spring element can be formed by a material section which is formed from the material of the bearing carrier. However, it can also be designed as a separate component which is mounted between the support ring carried by the bearing section and the bearing carrier.
Der Lagerträger und das Lager samt Federelement und gegebenenfalls der Anschlag können als vormontierte Einheit ausgebildet sein. The bearing carrier and the bearing together with the spring element and optionally the stop may be formed as a preassembled unit.
Der Lagerträger besteht gemäß einer bevorzugten Ausführungsform der Erfindung aus einem spanlos umgeformten Blechteil, insbesondere aus einem tiefgezogenen Blechteil. An dieses kann aber auch Kunststoffmaterial angebracht sein. The bearing carrier consists according to a preferred embodiment of the invention of a non-cutting formed sheet metal part, in particular of a deep-drawn sheet metal part. But this can also be attached plastic material.
Neben Stahl oder Kunststoffen als Material für den Lagerträger kann auch vorgesehen werden, den Lagerträger oder Teile desselben aus einem Leichtmetall, einem Compound- oder einem Sinter- bzw. sinterähnlichem Material herzustellen. Bevorzugt ist die vorgeschlagene Lageranordnung als vormontierte oder zumindest teilvormontierte Lagereinheit ausgebildet, die neben der reinen Lagerfunktion auch die axiale Beweglichkeit sicherstellt, d. h. die Loslagerfunktion. Bei einer solchen (teil)vormontierten Einheit kann der Logistikaufwand wesentlich verringert werden, was wiederum die Kosten senkt. In addition to steel or plastics as a material for the bearing carrier can also be provided to produce the bearing support or parts thereof from a light metal, a compound or a sintered or sinter-like material. Preferably, the proposed bearing arrangement is designed as a preassembled or at least partially preassembled bearing unit, which also ensures the axial mobility in addition to the pure bearing function, ie the floating bearing function. In such a (partially) preassembled unit, the logistics costs can be significantly reduced, which in turn reduces costs.
Somit wird erfindungsgemäß eine kostengünstige Lösung für axial nicht fixierte (Wälz)Lager (Loslager) mit einem adaptierten bzw. integrierten Befestigungsflansch und integrierter axialer Vorspannung bereitgestellt. Thus, according to the invention, a cost effective solution for axially non-fixed (rolling) bearings (floating bearing) with an adapted or integrated mounting flange and integrated axial bias is provided.
In vorteilhafter Weise zeichnet sich das vorgeschlagene Loslager durch einen stark schwingungsdämpfenden Effekt aus. Advantageously, the proposed floating bearing is characterized by a strong vibration damping effect.
Es können Standard- Wälzlager, insbesondere Rillenkugellager, verwendet werden. Hierdurch ergeben sich wirtschaftliche Vorteile. Standard rolling bearings, in particular deep groove ball bearings, can be used. This results in economic benefits.
Der flanschartig ausgebildete Lagerträger (Lagergehäuse) stellt die Aufnahme radialer Lagerkräfte sicher; es besteht eine einfache Befestigungsmöglichkeit an einem Gehäuse, z. B. an einem Motorgehäuse, wofür bevorzugt eine Schraub Verbindung vorgesehen ist. Der Flansch kann aus Blech bestehen, wobei bevorzugt nur Umformvorgänge, Stanzvorgänge und Biegevorgänge bei dessen Herstellung zum Einsatz kommen. The flange-shaped bearing carrier (bearing housing) ensures the absorption of radial bearing forces safely; there is a simple attachment to a housing, eg. B. to a motor housing, for which preferably a screw connection is provided. The flange may be made of sheet metal, wherein preferably only forming operations, punching operations and bending operations are used in its manufacture.
Der Lagerträger hat eine integrierte bzw. adaptierte Zentrierfunktion, was eine wesentliche Montageerleichterung darstellt. Demgemäß ist die Sicherheit gegen Montagefehler geringer, was wiederum kostendämpfend wirkt. The bearing carrier has an integrated or adapted centering function, which represents a significant ease of assembly. Accordingly, the security against assembly errors is lower, which in turn acts cost-dampening.
Bevorzugt ist der Lagerträger ausschließlich umformtechnisch hergestellt, vorzugsweise aus Tiefziehstahl. Preferably, the bearing carrier is produced exclusively by forming technology, preferably made of deep-drawn steel.
Wird alternativ oder additiv ein Kunststoff-Formprozess als Fertigungsverfahren für den Lagerträger eingesetzt, können zusätzliche Montageprozesse vermieden werden. Die Integration verschiedener weiterer Montageprozesse kann während der Hauptzeit beispielsweise eines Spritzgießprozesses erfolgen. Dies hat eine sehr kostengünstige Produktion zur Folge. Ein weiterer Vorteil ist mit Mehrkomponenten-Formprozessen zu erreichen, näm- lieh die Platzierung von unterschiedlichem Material abhängig von der jeweils zu erfüllenden Funktion der kompletten Lageranordnung. If, alternatively or additionally, a plastic molding process is used as the manufacturing method for the bearing carrier, additional assembly processes can be avoided. The integration of various other assembly processes can take place during the main time of, for example, an injection molding process. This results in a very cost-effective production. Another advantage is achieved with multi-component molding processes, namely lent the placement of different material depending on the particular function to be performed by the complete bearing arrangement.
Am oder im Lagerträger adaptiert bzw. integriert ist ferner das Feder- und/oder Dämpfelement. Die Wirkrichtung der Federung bzw. Dämpfung ist vorzugsweise in axialer Richtung vorgesehen, aber auch ein radial wirkender Federeffekt ist nicht ausgeschlossen. Durch die Integration des Feder- bzw. Dämpfelements kann ein zusätzlicher Handhabungsaufwand beim Anwender der Lageranordnung entfallen. Werden gleiche Materialien (Stahl) an der Schnittstelle zwischen Lagerring (Außenring) und Lagerträger vorgesehen, liegt vorteilhafter Weise ein gleiches thermisches Verhalten vor, so dass keine temperaturbedingten Veränderungen der Lospassung (d. h. des Schiebesitzes) zu befürchten sind. In der Zeichnung sind Ausführungsbeispiele der Erfindung dargestellt. Es zeigen: Also adapted or integrated on or in the bearing carrier is the spring and / or damping element. The effective direction of the suspension or damping is preferably provided in the axial direction, but also a radially acting spring effect is not excluded. By integrating the spring or damping element, an additional handling effort for the user of the bearing assembly can be omitted. If identical materials (steel) are provided at the interface between the bearing ring (outer ring) and the bearing carrier, it is advantageous to have the same thermal behavior, so that no temperature-induced changes in the exposure (that is to say the sliding seat) are to be feared. In the drawings, embodiments of the invention are shown. Show it:
Fig. 1 schematisch im Radialschnitt eine Lageranordnung, mit der ein Wellenteil relativ zu einem Gehäuse mit Loslagerfunktion gelagert wird gemäß einer ersten Ausführungsform der Erfindung, 1 is a schematic radial section of a bearing arrangement with which a shaft part is mounted relative to a housing with movable bearing function according to a first embodiment of the invention,
Fig. 2 die Lageranordnung in der Darstellung wie Fig. 1 gemäß einer zweiten Ausführungsform der Erfindung, 2 shows the bearing arrangement in the representation as FIG. 1 according to a second embodiment of the invention,
Fig. 3 die Lageranordnung in der Darstellung wie Fig. 1 gemäß einer dritten Ausführungsform der Erfindung, 3 shows the bearing arrangement in the representation as in FIG. 1 according to a third embodiment of the invention, FIG.
Fig. 4 die Lageranordnung in der Darstellung wie Fig. 1 gemäß einer vierten Ausführungsform der Erfindung, Fig. 5 die Lageranordnung in der Darstellung wie Fig. 1 gemäß einer fünften Ausführungsform der Erfindung, 4 shows the bearing arrangement in the illustration as in FIG. 1 according to a fourth embodiment of the invention, FIG. 5 shows the bearing arrangement in the illustration as in FIG. 1 according to a fifth embodiment of the invention,
Fig. 6 die Lageranordnung in der Darstellung wie Fig. 1 gemäß einer sechsten Ausführungsform der Erfindung, die Einzelheit„Z" gemäß Fig. 6 und 6 shows the bearing arrangement in the illustration as FIG. 1 according to a sixth embodiment of the invention, FIG. the detail "Z" of FIG. 6 and
Fig. 8 die Lageranordnung in der Darstellung wie Fig. 1 gemäß einer siebten Ausfüh- rungsform der Erfindung. 8 shows the bearing arrangement in the representation as in FIG. 1 according to a seventh embodiment of the invention.
In Fig. 1 ist eine erste Ausführungsform der erfindungsgemäßen Lageranordnung 1 dargestellt. Eine Welle 2 wird hier mittels eines Wälzlagers 4 in einem Gehäuse 3 gelagert. Dabei ist die Lageranordnung 1 als Loslagerung ausgebildet, d. h. Kräfte in radiale Richtung r werden von der Welle 2 ins Gehäuse 3 übertragen, nicht jedoch Kräfte in axiale Richtung a. In Fig. 1, a first embodiment of the bearing assembly 1 according to the invention is shown. A shaft 2 is mounted here by means of a rolling bearing 4 in a housing 3. The bearing assembly 1 is designed as a floating bearing, d. H. Forces in the radial direction r are transmitted from the shaft 2 into the housing 3, but not forces in the axial direction a.
Der Außenring 5 und der Innenring 6 des als Rillenkugellagers ausgebildeten Wälzlagers 4 sind nur schematisch bezeichnet. Sowohl der Außenring 5 als auch der Innenring 6 haben eine zylindrische Außenfläche 7 bzw. eine zylindrische Innenfläche 8. Die zylindrische Innenfläche 8 des Innenrings 6 sitzt auf einem entsprechenden zylindrischen Sitzabschnitt der Welle 2. Indes sitzt die zylindrische Außenfläche 7 des Außenrings 5 auf der zylindrischen Sitzfläche 11 eines Trägerabschnitts 10, der Bestandteil eines Lagerträgers 9 ist. Zwischen der zylindrischen Außenfläche 7 des Außenrings 5 und der zylindrischen Sitzfläche 11 des Trägerabschnitts 10 liegt Spielpassung vor, d. h. mittels Schiebesitz kann der Außenring 5 in axiale Richtung a auf dem Trägerabschnitt 10 verschoben werden. The outer ring 5 and the inner ring 6 of the designed as a deep groove ball bearing roller bearing 4 are indicated only schematically. Both the outer ring 5 and the inner ring 6 have a cylindrical outer surface 7 and a cylindrical inner surface 8. The cylindrical inner surface 8 of the inner ring 6 is seated on a corresponding cylindrical seat portion of the shaft 2. However, sits the cylindrical outer surface 7 of the outer ring 5 on the cylindrical Seat 11 of a support portion 10, which is part of a bearing support 9. Between the outer cylindrical surface 7 of the outer ring 5 and the cylindrical seat surface 11 of the support portion 10 is clearance fit, d. H. By means of a sliding seat, the outer ring 5 can be displaced in the axial direction a on the support section 10.
Der Lagerträger 9 weist des weiteren noch einen Befestigungsflansch 15 auf, sowie (in sei- nem rechten axialen Endbereich) einen Absatz 17. Dieser Absatz 17 ist passend zu einer Ausformung 18 im Gehäuse 3 ausgebildet, so dass der Absatz 17 ein Zentriermittel 12 bildet, mit dem der Lagerträger 9 am Gehäuse 3 zentriert werden kann. The bearing carrier 9 also has a fastening flange 15, and also a shoulder 17 (in its right axial end region). This shoulder 17 is designed to fit a molding 18 in the housing 3, so that the shoulder 17 forms a centering means 12, with which the bearing carrier 9 can be centered on the housing 3.
Ist der Lagerträger 9 mit seinem Absatz 17 in die Ausformung 18 im Gehäuse 3 eingesetzt, liegt der Befestigungsflansch 15 mit einer Stirnseite am Gehäuse 3 an, und wird mittels nur angedeuteter Befestigungsmittel 13 in Form von Schrauben am Gehäuse 3 festgelegt. If the bearing carrier 9 is inserted with its shoulder 17 into the molding 18 in the housing 3, the mounting flange 15 bears against the housing 3 with an end face, and is fastened to the housing 3 in the form of screws by means of only indicated fastening means 13.
In seinem (rechten) axialen Endabschnitt hat der Lagerträger 9 einen sich radial nach innen erstreckenden Innenabschnitt 19, der eine dem Wälzlager 4 zugewandte Stirnseite auf- weist. Zwischen dieser und der Stirnseite des Außenrings 5 ist ein Federelement 14 platziert - hier in Form einer Schraubenfeder -, die eine axiale Vorspannkraft auf den Außenring 5 ausübt. Da das Lager 4 als Rillenkugellager ausgebildet ist und somit sowohl radiale als auch axiale Kräfte übertragen kann, wird das Lager 4 mit dem Innenring 6 gegen einen Bund 20 an der Welle 2 gedrückt. In its (right) axial end portion of the bearing support 9 has a radially inwardly extending inner portion 19 which a the rolling bearing 4 facing end face up has. Between this and the end face of the outer ring 5, a spring element 14 is placed - here in the form of a coil spring - which exerts an axial biasing force on the outer ring 5. Since the bearing 4 is designed as a deep groove ball bearing and thus can transmit both radial and axial forces, the bearing 4 is pressed with the inner ring 6 against a collar 20 on the shaft 2.
Damit im noch nicht montierten Zustand eine Einheit gebildet wird, die aus dem Lager 4, dem Lagerträger 9 und dem Federelement 14 besteht, ist ein Anschlag 16 in Form eines Sprengrings in den (linken) axialen Endbereich des Trägerabschnitts 10 eingesetzt. Damit liegt im noch nicht montierten Zustand der Lageranordnung eine unverlierbare, vormontierte Einheit vor. Die Montage dieser Einheit gestaltet sich aufgrund der Zentriermittel 12 sehr einfach. So that a unit is formed in the not yet assembled state, which consists of the bearing 4, the bearing support 9 and the spring element 14, a stop 16 in the form of a snap ring in the (left) axial end portion of the support portion 10 is inserted. This is in the unassembled state of the bearing assembly before a captive, pre-assembled unit. The assembly of this unit is very easy due to the centering 12.
Im Ausführungsbeispiel nach Fig. 1 ist also der Lagerträger 9 als massives Flanschgehäuse ausgebildet, wobei es bevorzugt aus Stahl besteht. In the embodiment of FIG. 1, therefore, the bearing support 9 is formed as a solid flange housing, wherein it is preferably made of steel.
In Fig. 2 ist eine alternative Ausgestaltung zu sehen, bei der als Lagerträger 9 ein umgeformtes (Stahl-)Blechteil zum Einsatz kommt. Der Anschlag 16 wird hier durch einen nach innen abgebogenen Abschnitt des Trägerabschnitts 10 gebildet. Die Anlagefläche für das Federelement 14 wird durch einen Stützring 21 gebildet, der am Lagerträger 9 angeschweißt oder angelötet ist. In Fig. 2, an alternative embodiment can be seen, in which as a bearing support 9, a formed (steel) sheet metal part is used. The stop 16 is formed here by an inwardly bent portion of the support portion 10. The contact surface for the spring element 14 is formed by a support ring 21 which is welded or soldered to the bearing support 9.
Anders als bei der Lösung gemäß Fig. 1 ist hier auch, dass die Zentriermittel 12 als Passstifte ausgebildet sind. Unlike the solution according to FIG. 1, it is also the case here that the centering means 12 are designed as dowel pins.
Ansonsten entspricht die in Fig. 2 dargestellt Lösung im Wesentlichen derjenigen gemäß Fig. 1. Otherwise, the solution shown in FIG. 2 essentially corresponds to that according to FIG. 1.
In Fig. 3 ist eine weitere Variante dargestellt. Auch hier kommt als Lagerträger 9 ein Blechteil zum Einsatz, das hier allerdings zwei gegeneinander umgefaltete und sich axial erstreckende Teile 10' und 10" aufweist (umgestülpter Napf), die zusammen den Trägerabschnitt 10 bilden. Ferner ist hier das Federelement 14 anders gestaltet als vorstehend beschrieben. Es wird nämlich durch einen umgebogenen Endabschnitt des einen Teils 10' des Trägerabschnitts 10 gebildet (ähnlich einer Tellerfeder). Zur Erhöhung der Elastizität dieses Federabschnitts kann es mit Schlitzen versehen sein, die sich insbesondere radial erstrecken. In Fig. 3, a further variant is shown. Here, too, comes as a bearing support 9, a sheet metal part is used, but here two folded against each other and axially extending parts 10 'and 10 "has (inverted cup), which together form the support portion 10. Furthermore, here the spring element 14 is designed differently than described above. Namely, it is formed by a bent end portion of the one part 10 'of the support portion 10 (similar to a plate spring). To increase the elasticity of this spring section, it may be provided with slots which extend in particular radially.
Hier ist auch kein Anschlag 16 vorgesehen, wie bei den Lösungen nach Fig. 1 und Fig. 2. In diesem Falle kann das Lager 4 also auch später noch (von links) auf den Trägerabschnitt 10 aufgeschoben werden. Somit kann, sofern es der Montageprozess erfordert, das Lager auch separat angeliefert werden. Ein Anschlag 16 wäre aber optional möglich. Here, no stop 16 is provided, as in the solutions of Fig. 1 and Fig. 2. In this case, the bearing 4 so later (from the left) are pushed onto the support portion 10. Thus, if required by the assembly process, the bearing can also be delivered separately. A stop 16 would be possible but optional.
In Fig. 4 ist eine Lösung zu sehen, bei der der Lagerträger 9 aus einem gebogenen Blech besteht, das den Trägerabschnitt 10 und den Befestigungsflansch 15 bildet. Dieses Blech ist beispielsweise durch Spritzgießen mit einer Kunststoffmasse umgeben worden, um die Form zu erhalten, die im Radialschnitt in Fig. 4 zu sehen ist. Das Kunststoffmaterial formt hier auch den Absatz 17, der die Zentriermittel 12 bildet. In Fig. 4, a solution can be seen, in which the bearing support 9 consists of a bent sheet metal, which forms the support portion 10 and the mounting flange 15. This sheet has been surrounded, for example by injection molding with a plastic mass to obtain the shape, which can be seen in the radial section in Fig. 4. The plastic material here also forms the shoulder 17, which forms the centering means 12.
Erwähnenswert ist hier, dass das Federelement 14 durch Kunststoffmaterial gebildet wird. Die skizzierte Kontur ist in diesem Beispiel im gleichen Herstellprozess wie beim Lagerträger 9 und damit aus dem gleichen Kunststoffmaterial hergestellt und kann auch wieder - zwecks Erhöhung der Elastizität des Federelements 14 - mit (radialen) Schlitzen versehen sein. It is worth mentioning here that the spring element 14 is formed by plastic material. The sketched contour is in this example in the same manufacturing process as the bearing carrier 9 and thus made of the same plastic material and can also - in order to increase the elasticity of the spring element 14 - be provided with (radial) slots.
Alternativ kommt für die Ausbildung des Federelements auch wieder ein Mehrkomponen- ten-Formprozess in Frage, was den Vorteil hat, dass eine Einheit mit unterschiedlichen Materialeigenschaften realisiert werden kann. Alternatively, a multi-component molding process may also be considered for the design of the spring element, which has the advantage that a unit with different material properties can be realized.
Ähnlich zur Lösung gemäß Fig. 3 ist hier auch wieder kein Anschlag 16 vorgesehen, was aber optional möglich wäre. Es gilt insofern das diesbezüglich zu Fig. 3 Gesagte. Similar to the solution according to FIG. 3, no stop 16 is again provided here, but this would be optionally possible. It is true that in this respect to Fig. 3 said.
Gemäß Fig. 5 ist eine zu Fig. 4 ähnliche Lösung zu sehen. Hier allerdings bildet ein Blechteil, das den Trägerabschnitt 10 formt, auch das Federelement 14. Dieser tellerfederartige Bereich kann wieder geschlitzt werden, um die Elastizität zu erhöhen. Der Befestigungsflansch 15 kann als Scheibe ausgebildet sein, wobei diese und der Trägerabschnitt 10 durch Kunststoffmaterial, das den weiteren Lagerträger 9 bildet, miteinander verbunden sind. Dieses Kunststoffmaterial bildet hier auch wieder den Absatz 17, um die Zentriermittel 12 zu realisieren. According to FIG. 5, a solution similar to FIG. 4 can be seen. Here, however, forms a sheet metal part, which forms the support portion 10, and the spring element 14. This plate spring-like region can be slotted again to increase the elasticity. The mounting flange 15 may be formed as a disc, these and the support portion 10 by plastic material, which forms the further bearing support 9, are interconnected. This plastic material here also forms the shoulder 17 in order to realize the centering means 12.
Bezüglich des auch hier fehlenden Anschlags 16 wird auf die Ausführungen zu Fig. 3 und Fig. 4 verwiesen; optional ist ein solcher Anschlag aber möglich. With regard to the stop 16, which is also missing here, reference is made to the statements relating to FIG. 3 and FIG. 4; Optionally, such a stop is possible.
Eine weitere Variante zeigt Fig. 6 und Fig. 7. Das Kunststoffmaterial, das den Blechabschnitt 10 und 15 umgibt, ist hier so ausgeformt, dass mehrere um den Umfang herum verteilt angeordnete Aufnahmekammern 22 gebildet werden, in denen ein Federelement 14 platziert werden kann. Damit das Federelement 14 in der Aufnahmekammer 22 gehalten wird, können Noppen 23 oder ähnlich geformte Elemente angeformt sein, die einen Hinterschnitt bilden und das Federelement 14 halten. Vorliegend werden also Federelemente 14 in Form separater Bauteile eingesetzt (von denen in Fig. 6 nur eines skizziert ist). Das Zentriermittel 12 wird wiederum durch einen Absatz im Kunststoffmaterial gebildet. A further variant is shown in FIG. 6 and FIG. 7. The plastic material surrounding the sheet metal section 10 and 15 is here shaped such that a plurality of receiving chambers 22 arranged distributed around the circumference are formed, in which a spring element 14 can be placed. So that the spring element 14 is held in the receiving chamber 22, nubs 23 or similarly shaped elements may be formed, which form an undercut and hold the spring element 14. In the present case, therefore spring elements 14 are used in the form of separate components (of which in Fig. 6 only one is outlined). The centering means 12 is again formed by a shoulder in the plastic material.
In diesem Ausführungsbeispiel ist auch wieder ein Anschlag 16 vorgesehen, der das Lager 4 am axialen Herausgleiten hindert. Der Anschlag 16 ist durch einen nach innen gebogenen Endabschnitt des Trägerabschnitts 10 ausgebildet. Hierdurch kann wieder eine unverlierba- re vormontierte Einheit geschaffen werden. In this embodiment, a stop 16 is again provided, which prevents the bearing 4 on the axial sliding out. The stop 16 is formed by an inwardly bent end portion of the support portion 10. As a result, an unsolvable preassembled unit can be created again.
Eine letzte Variante zeigt Fig. 8. Hier kommt als Lagerträger 9 wiederum ein reines Blechteil zum Einsatz. Ein nach Art eines umgestülpten Napfes gebildeter Blechabschnitt mit den Teilen 10' und 10" bildet den Trägerabschnitt 10, der das Lager 4 aufnimmt (hier: wiederum ohne Anschlag 16). Das Teil 10" geht dann in den Befestigungsflansch 15 über. Die Verlängerung des Teils 10' schafft die Zentriermittel 12, d. h. der (nach rechts) herausragende Bereich des Teils 10' kann in die Bohrung im Gehäuse 3 eingesetzt werden, um den Lagerträger 9 zu zentrieren. Am (rechten) Ende des Teils 10' befindet sich ein radial nach innen gebogener Abschnitt, der die Halterung für Federelemente 14 darstellt (von denen in Fig. 8 nur eines skizziert ist). In dieser Figur ist auch wieder die Lösung ohne Anschlag 16 für den Außenring des Lagers 4 skizziert, was optional aber möglich wäre. Insoweit gilt das oben zu Fig. 3, Fig. 4 und Fig. 5 Gesagte. A final variant is shown in FIG. 8. Here comes as a bearing carrier 9, in turn, a pure sheet metal part used. A sheet metal section formed in the manner of an inverted cup with the parts 10 'and 10 "forms the support section 10 which receives the bearing 4 (here again without stop 16) .The part 10" then merges into the fastening flange 15. The extension of the part 10 'provides the centering means 12, ie the (to the right) outstanding portion of the part 10' can be inserted into the bore in the housing 3 to center the bearing support 9. At the (right) end of the part 10 'is a radially inwardly bent portion, which is the holder for spring elements 14 (of which in Fig. 8 only one is outlined). In this figure, again the solution without stop 16 is outlined for the outer ring of the bearing 4, which would be optional but possible. In that regard, what has been said above regarding FIGS. 3, 4 and 5 applies.
Bezugszeichenliste LIST OF REFERENCE NUMBERS
I Lageranordnung I bearing arrangement
2 erstes Bauteil (Welle) 2 first component (shaft)
3 zweites Bauteil (Gehäuse)  3 second component (housing)
4 Lager  4 bearings
5 Lagerring (Außenring)  5 bearing ring (outer ring)
6 Lagerring (Innenring)  6 bearing ring (inner ring)
7 zylindrische Außenfläche 7 cylindrical outer surface
8 zylindrische Innenfläche  8 cylindrical inner surface
9 Lagerträger  9 bearing carrier
10 Trägerabschnitt  10 carrier section
10' Teil des Trägerabschnitts  10 'part of the support section
10" Teil des Trägerabschnitts 10 "part of the beam section
I I zylindrische Sitzfläche  I I cylindrical seat
12 Zentriermittel  12 centering
13 Befestigungsmittel (Schraube)  13 fasteners (screw)
14 Federelement (Feder- und/oder Dämpfelement) 15 Befestigungsflansch  14 Spring element (spring and / or damping element) 15 Mounting flange
16 Anschlag  16 stop
17 Absatz  17 paragraph
18 Ausformung  18 shaping
19 Innenabschnitt  19 interior section
20 Bund 20 fret
21 Stützring  21 support ring
22 Aufnahmekammer  22 receiving chamber
23 Noppen a axiale Richtung  23 nubs in an axial direction
r radiale Richtung r radial direction

Claims

P a t e n t a n s p r ü c h e Lageranordnung P atentansprü che bearing arrangement
1. Lageranordnung (1) mit Loslagerfunktion, mit der ein erstes Bauteil (2), insbesondere eine Welle, relativ zu einem zweiten Bauteil (3), insbesondere einem Gehäuse, drehbar, aber in axiale Richtung (a) verschieblich gelagert werden kann, dadurch gekennzeichnet, dass die Lageranordnung aufweist: ein Lager (4), das zur Übertragung radialer und axialer Kräfte ausgebildet ist, wobei zumindest einer der Lagerringe (5, 6) eine zumindest teilweise zylindrische Außenoder Innenfläche (7, 8) aufweist, einen Lagerträger (9), der einen Trägerabschnitt (10) mit einer zumindest teilweise zylindrischen Sitzfläche (11) aufweist, wobei der Trägerabschnitt (10) zur Aufnahme eines Lagerrings (5) mit seiner zylindrischen Außen- oder Innenfläche (7) ausgebildet ist, wobei zwischen der zylindrischen Sitzfläche (11) und der zylindrischen Außen- oder Innenfläche (7) des Lagerrings (5) ein Schiebesitz ausgebildet ist, der zwischen dem Trägerabschnitt (10) und dem Lagerring (5) eine relative Verschiebung in axiale Richtung (a) zulässt, wobei der Lagerträger (9) Zentriermittel (12) aufweist, mit der er relativ zu einem der Bauteile (2, 3) zentriert werden kann, wobei der Lagerträger (9) Befestigungsmittel (13) aufweist, mit denen er an einem der Bauteile (2, 3) befestigt werden kann, und wobei am oder im Lagerträger (9) ein Federelement (14) angeordnet ist, das zur Erzeugung einer in axiale Richtung (a) wirksamen Federkraft zwischen dem Lagerträger (9) und dem vom Trägerabschnitt (10) gehaltenen Lagerring (5) ausgebildet ist. 1. bearing assembly (1) with floating bearing function, with a first component (2), in particular a shaft relative to a second component (3), in particular a housing, rotatably, but in the axial direction (a) can be displaceably mounted, characterized in that the bearing arrangement comprises: a bearing (4) which is designed to transmit radial and axial forces, wherein at least one of the bearing rings (5, 6) has an at least partially cylindrical outer or inner surface (7, 8), a bearing carrier (9 ), which has a support portion (10) with an at least partially cylindrical seat surface (11), wherein the support portion (10) for receiving a bearing ring (5) with its cylindrical outer or inner surface (7) is formed, wherein between the cylindrical seat surface (11) and the cylindrical outer or inner surface (7) of the bearing ring (5) is formed a sliding seat between the support portion (10) and the bearing ring (5) has a relative Ve displacement in the axial direction (a), the bearing carrier (9) having centering means (12) with which it can be centered relative to one of the components (2, 3), wherein the bearing carrier (9) fastening means (13), with which it can be attached to one of the components (2, 3), and wherein on or in the bearing support (9) a spring element (14) is arranged, which is used to produce a in axial direction (a) effective spring force between the bearing support (9) and the bearing of the support portion (10) held bearing ring (5) is formed.
2. Lageranordnung nach Anspruch 1, dadurch gekennzeichnet, dass das Lager (4) als Wälzlager, insbesondere als Rillenkugellager, ausgebildet ist. 2. Bearing arrangement according to claim 1, characterized in that the bearing (4) is designed as a rolling bearing, in particular as a deep groove ball bearing.
3. Lageranordnung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Lagerträger (9) einen sich radial (r) erstreckenden Befestigungsflansch (15) aufweist, mit dem er an dem einen Bauteil (3) mittels der Befestigungsmittel (13) befestigt werden kann. 3. Bearing arrangement according to claim 1 or 2, characterized in that the bearing carrier (9) has a radially (r) extending mounting flange (15) with which it can be fixed to the one component (3) by means of the fastening means (13) ,
4. Lageranordnung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass in einem axialen Endbereich des Trägerabschnitts (10) ein Anschlag (16) zur Begrenzung der axialen Beweglichkeit des vom Trägerabschnitt (10) aufgenommenen Lagerrings (5) relativ zum Trägerabschnitt (10) angeordnet ist. 4. Bearing arrangement according to one of claims 1 to 3, characterized in that in an axial end region of the support portion (10) has a stop (16) for limiting the axial mobility of the carrier portion (10) received bearing ring (5) relative to the support portion (10 ) is arranged.
5. Lageranordnung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Befestigungsmittel (13) Schrauben sind. 5. Bearing arrangement according to one of claims 1 to 4, characterized in that the fastening means (13) are screws.
6. Lageranordnung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Zentriermittel (12) durch einen Absatz (17) gebildet werden, der im Lagerträger (9) ausgebildet ist und der in eine kongruente Aus formung (18) in einem der Bauteile (3) eingreift. 6. Bearing arrangement according to one of claims 1 to 5, characterized in that the centering means (12) by a shoulder (17) are formed, which is formed in the bearing carrier (9) and in a congruent from molding (18) in one of Engages components (3).
7. Lageranordnung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass das Federelement (14) durch einen Materialabschnitt gebildet werden, der aus dem Material des Lagerträgers (9) ausgeformt ist. 7. Bearing arrangement according to one of claims 1 to 6, characterized in that the spring element (14) are formed by a material portion which is formed from the material of the bearing carrier (9).
8. Lageranordnung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass das Federelement (14) als separates Bauteil ausgebildet ist, das zwischen dem vom Trägerabschnitt (10) getragenen Lagerring (5) und dem Lagerträger (9) montiert ist. 8. Bearing arrangement according to one of claims 1 to 6, characterized in that the spring element (14) is designed as a separate component, which is mounted between the support portion (10) carried by the bearing ring (5) and the bearing support (9).
9. Lageranordnung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass der Lagerträger (9) und das Lager (4) samt Federelement (14) und gegebenenfalls Anschlag (16) als vormontierte Einheit ausgebildet sind. 9. Bearing arrangement according to one of claims 1 to 8, characterized in that the bearing carrier (9) and the bearing (4) together with spring element (14) and optionally stop (16) are formed as a preassembled unit.
10. Lageranordnung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass der Lagerträger (9) aus einem spanlos umgeformten Blechteil, insbesondere aus einem tiefgezogenen Blechteil, besteht oder ein solches aufweist. 10. Bearing arrangement according to one of claims 1 to 9, characterized in that the bearing carrier (9) consists of a non-cutting formed sheet metal part, in particular of a deep-drawn sheet metal part, or has such.
EP13791807.4A 2012-11-16 2013-11-14 Bearing arrangement Withdrawn EP2920478A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012220985.9A DE102012220985B3 (en) 2012-11-16 2012-11-16 bearing arrangement
PCT/EP2013/073848 WO2014076191A1 (en) 2012-11-16 2013-11-14 Bearing arrangement

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EP2920478A1 true EP2920478A1 (en) 2015-09-23

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EP13791807.4A Withdrawn EP2920478A1 (en) 2012-11-16 2013-11-14 Bearing arrangement

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US (1) US9702403B2 (en)
EP (1) EP2920478A1 (en)
CN (1) CN105008739B (en)
DE (1) DE102012220985B3 (en)
WO (1) WO2014076191A1 (en)

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Also Published As

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DE102012220985B3 (en) 2014-05-08
WO2014076191A1 (en) 2014-05-22
US20150345550A1 (en) 2015-12-03
US9702403B2 (en) 2017-07-11
CN105008739A (en) 2015-10-28
CN105008739B (en) 2018-04-03

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