EP2459892A1 - Agencement de paliers fixe et libre - Google Patents

Agencement de paliers fixe et libre

Info

Publication number
EP2459892A1
EP2459892A1 EP10736655A EP10736655A EP2459892A1 EP 2459892 A1 EP2459892 A1 EP 2459892A1 EP 10736655 A EP10736655 A EP 10736655A EP 10736655 A EP10736655 A EP 10736655A EP 2459892 A1 EP2459892 A1 EP 2459892A1
Authority
EP
European Patent Office
Prior art keywords
bearing
sleeve
bearing arrangement
ring
arrangement according
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Withdrawn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
EP10736655A
Other languages
German (de)
English (en)
Inventor
Edgar Pickel
Peter Horling
Henning Kern
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
Priority to EP10736655A priority Critical patent/EP2459892A1/fr
Publication of EP2459892A1 publication Critical patent/EP2459892A1/fr
Withdrawn legal-status Critical Current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
    • F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
    • F16C27/06—Elastic or yielding bearings or bearing supports, for exclusively rotary movement by means of parts of rubber or like materials
    • F16C27/066—Ball or roller bearings
    • 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
    • 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
    • F16C2300/00—Application independent of particular apparatuses
    • F16C2300/02—General use or purpose, i.e. no use, purpose, special adaptation or modification indicated or a wide variety of uses mentioned

Definitions

  • the invention relates to a bearing assembly comprising a first bearing with a first bearing, wherein the first bearing is designed as a fixed bearing, and a second bearing with a second bearing, wherein the second bearing is designed as a floating bearing, wherein the second bearing is formed, a permitting relative displacement in the axial direction between a first component to be supported and a second component bearing the second bearing.
  • bearing arrangements of the generic type are used in various ways in the prior art.
  • an electrical machine electric motor
  • a bearing arrangement is used, as shown in FIG.
  • different types of rolling bearings are used.
  • Fig. 1 the bearing of a shaft 6 is exemplified in a housing 7 by means of a bearing assembly 1 having a first bearing 2 with a first bearing 3, which is designed as a fixed bearing; a second bearing 4 comprises a second bearing 5, wherein this bearing is designed as a floating bearing point, ie it is a relative movement of the bearing 5 in the axial direction a possible.
  • the two bearings 3 and 5 are designed here as deep groove ball bearings.
  • the floating bearing, ie, the second bearing 4 is axially biased by a spring 17 to at ensure all operating conditions have a sufficient minimum load (preload) in the axial direction.
  • the invention is based on the invention to develop a bearing arrangement of the generic type so that it is possible to realize the floating bearing function in a simple and cost-effective manner.
  • the movable bearing displacement and the required minimum load should be reliably and easily ensured.
  • a displacement of the bearing rings in the housing should not be required for this purpose, so that the need for a sliding seat for a bearing ring should be eliminated.
  • a passage of electricity through the camp should equally be prevented by simple means.
  • the camp should have an improved damping behavior, can be improved with the vibrations improved.
  • the second bearing point comprises a carrier arrangement, which has a Bearing ring of the second bearing holds and in turn is attached to one of the components, wherein the carrier assembly comprises a first sleeve which is fixed to one of the components, wherein in the radially inner or outer region of the first sleeve, a ring member made of an elastic material on the first Sleeve is attached and wherein the ring member is connected directly or indirectly with the bearing ring.
  • the carrier assembly is attached to the second component, wherein the first sleeve is formed as an outer sleeve, which is fixed to the second component, wherein in the radially inner region of the outer sleeve, the ring element made of elastic material is attached to the outer sleeve and wherein the ring member is connected directly or indirectly to the outer ring of the second bearing.
  • the ring element is preferably made of rubber material or of an elastomeric plastic material. It preferably has a substantially hollow cylindrical shape.
  • the bearing assembly is preferably mounted so that in the state without external forces on the ring member an effective axial shear force is exerted in the axial direction.
  • the bearing assembly is preferably mounted so that in the state without external forces, the first sleeve, the ring member, a bearing ring of the second bearing and optionally a second sleeve are arranged radially one above the other.
  • a second sleeve in particular an inner sleeve, can be arranged between the bearing ring and the ring element.
  • the bearing assembly may further be mounted so that there is a radial bias in the material of the ring member.
  • the ring member may be cohesively secured to the first sleeve and optionally also to the second sleeve. It is especially thought that the fabric bond is made by gluing or by vulcanization.
  • the first sleeve and / or optionally also the second sleeve may have an interruption point at at least one circumferential location.
  • the first sleeve and / or optionally also the second sleeve may have at one axial end a radially inwardly or outwardly extending rim which forms an axial stop for a component to which the sleeve is connected.
  • the first sleeve and / or optionally also the second sleeve may be made of metal or plastic.
  • the first sleeve and / or possibly also the second sleeve can be seated in or on the component with which they are connected.
  • a sliding seat is absolutely unnecessary.
  • the bearings are preferably designed as rolling or ball bearings, in particular as deep groove ball bearings or angular contact ball bearings.
  • the proposed bearing arrangement is suitable for any application in which a fixed bearing and a floating bearing must be provided.
  • a shaft rotor
  • the invention concept is therefore particularly preferred for a storage unit for electrical machines.
  • the carrier assembly preferably consists of an outer and an inner sleeve (bushing), and an intermediate elastomer layer.
  • the inner sleeve is preferably made in one piece.
  • the outer sleeve can be segmented or slotted at at least one point.
  • the sleeves are radially retracted on one side to axially position the bearing or the bearing unit. Furthermore, this axial loads can be absorbed.
  • the bearing carrier is therefore preferably made so that the two sleeves are axially offset from one another and are aligned axially to each other only during assembly, d. H. radially superimposed. However, it is also possible that after manufacture, the two sleeves are axially aligned and axially offset from one another. By mutual hiring or bracing the bearing on the elastomer layer, the required minimum load of the bearing is thus ensured. Springs are no longer required, as explained in connection with the solution according to FIG. 1.
  • the movable bearing displacement is ensured as well as the required minimum load by the elastomer layer.
  • a displacement of the bearing rings in the housing is no longer necessary, which also eliminates the need for the sliding seat for the outer ring.
  • the movable bearing displacement is thus accomplished by the elastomer layer.
  • a displacement of the bearing ring in the housing is no longer necessary. This makes it possible to have firmer fits to realize fretting corrosion and worn out housing seats.
  • the outer sleeve engages exactly on the geometry of the housing bore, regardless of the manufacturing accuracy or ovality of the bore. With the appropriate accuracy of the other components, this leads to a "self-centering effect" with respect to the horizontal axis of rotation. This means that despite inaccuracies or ovalities of the housing bore, the required running accuracy of the shaft is achieved. This "self-centering" thus allows a high running accuracy of the bearing despite inaccuracies or ovalities of the housing bore. This allows a more cost-effective production of the housing seat. As a further development, it is also possible to dispense with the inner sleeve (bushing) and to connect the elastomeric material directly to the bearing outer ring.
  • the elastomer layer also advantageously prevents a current passage through the bearing.
  • the elastomer layer makes the storage less sensitive to manufacturing inaccuracies, such.
  • the elastomer layer is able to decouple vibrations in the acoustic range and thereby achieve a noise reduction of the machine (sound decoupling). Likewise, shock loads or vibrations / vibrations are damped.
  • Ausruhrungsbeiitul the invention are shown. Show it:
  • FIG. 1 is a radial section through a bearing assembly with a fixed bearing and a movable bearing, with which a shaft is mounted in a housing, according to the prior art
  • FIG. 3 is a sectional perspective view of a movable bearing according to the invention.
  • FIG. 4 is a radial section of the movable bearing according to FIG. 3, FIG.
  • Fig. 6 is a front view of a movable bearing according to the invention in a
  • FIG. 8 shows the radial section of an alternative to FIG. 7 solution according to the Er fung.
  • a second bearing 4 according to the invention is sketched in radial section, which is basically used in a bearing arrangement 1, as discussed in FIG.
  • the second bearing 4 comprises a second bearing 5 in the form of a deep groove ball bearing, with which the first component 6 is mounted in the form of a shaft.
  • the storage takes place relative to a housing 7, which constitutes a second component.
  • the bearing 4 now has a carrier arrangement 8, which in the present case is of annular design.
  • the carrier assembly 8 has an outer sleeve 10 (first sleeve) which is firmly seated in a bore 18 in the housing 7 with a press fit.
  • a radially outwardly extending rim 15 at one axial end of the outer sleeve 10 serves as an axial stop on the housing 7.
  • the carrier assembly 8 has an inner sleeve 12 (second sleeve), which sits with a press fit on the outer ring 9 of the bearing 5.
  • the inner sleeve 12 also has a radially inwardly extending rim 16 at one axial end, so that the bearing ring 9 can be encompassed and this has a defined axial stop on the inner sleeve 12.
  • annular formed part of elastomeric material namely the ring member 11 is arranged. It is connected with its radially outer end and with its radially inner end fixed to the two sleeves 10, 12, in this case by vulcanization.
  • the inner sleeve 12 according to FIG. 5 has interruption points 14 at three positions around the circumference.
  • the outer sleeve 10 of FIG. 6 has equally three interruption points 13 uniformly distributed around the circumference.
  • Fig. 7 From Fig. 7 it can be seen how the bearing 5 is configured together with the carrier assembly 8, if this unit is not yet installed, but is free of external forces. It can be seen that the outer sleeve 10 is displaced relative to the inner sleeve 12 in the axial direction a. This corresponds to the manufacturing state of the arrangement. Only by the installation of the unit shown in Fig. 7 in the bearing assembly 1, the state is taken, as he z. As can be seen in Fig. 4, d. H. the elastomeric material of the ring member 11 is now biased in the axial direction a. This axial bias is maintained during operation of the bearing assembly.
  • FIG. 8 shows an alternative which is based on the fact that the elastomeric material of the ring element 11 is here connected directly to the outer circumference of the bearing outer ring 9 without an inner sleeve 12 (adhesively bonded or anvulcanized). is).
  • An inner sleeve 12 is therefore not provided in this alternative solution.
  • the outer sleeve 10 is axially offset slightly offset to the bearing outer ring 9 and only by mounting a radially superimposed position of the parts is taken.
  • the proposed bearing arrangement can be used in all areas where a fixed bearing must be combined with a floating bearing.
  • the above solution for the design of the movable bearing can in principle also be used for the fixed bearing, ie this can also be connected via an elastomer layer to the housing.
  • the bearing point mentioned here as a bearing can absorb axial displacements.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Support Of The Bearing (AREA)

Abstract

L'invention concerne un agencement de paliers comprenant un premier point d'appui (2) avec un premier palier (3), le premier point d'appui (2) prenant la forme d'un palier fixe, et un deuxième point d'appui (4) avec un deuxième palier (5), le deuxième point d'appui (4) prenant la forme d'un palier libre. Le deuxième point d'appui (4) est configuré pour autoriser un déplacement relatif dans la direction axiale (a) entre une première pièce (6) à supporter et une deuxième pièce (7) portant le deuxième palier (5). Afin de réaliser la fonction de palier libre de manière simple, l'invention prévoit que le deuxième point d'appui (4) comprenne un agencement porteur (8) qui maintient une bague de palier (9) du deuxième palier (5) et qui est fixé de son côté sur l'une des pièces (7). L'agencement porteur (8) comprend une première douille (9) qui est fixée sur une des pièces (7). Dans la zone intérieure ou extérieure de la première douille (10), dans la direction radiale, un élément annulaire (11) fait dans un matériau élastique est fixé sur la première douille (10) et l'élément annulaire (11) est relié directement ou indirectement avec la bague de palier (9).
EP10736655A 2009-07-30 2010-07-15 Agencement de paliers fixe et libre Withdrawn EP2459892A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10736655A EP2459892A1 (fr) 2009-07-30 2010-07-15 Agencement de paliers fixe et libre

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP09009871 2009-07-30
PCT/EP2010/060211 WO2011012456A1 (fr) 2009-07-30 2010-07-15 Agencement de paliers fixe et libre
EP10736655A EP2459892A1 (fr) 2009-07-30 2010-07-15 Agencement de paliers fixe et libre

Publications (1)

Publication Number Publication Date
EP2459892A1 true EP2459892A1 (fr) 2012-06-06

Family

ID=42752943

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10736655A Withdrawn EP2459892A1 (fr) 2009-07-30 2010-07-15 Agencement de paliers fixe et libre

Country Status (2)

Country Link
EP (1) EP2459892A1 (fr)
WO (1) WO2011012456A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2388487A3 (fr) * 2010-05-20 2016-03-02 RBC Manufacturing Corporation Bearing Rotational Lock

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6092300A (ja) * 1983-10-26 1985-05-23 Osaka Chem Lab ソ−ヤサポゲノ−ルｂ誘導体の製法
DE102012104249A1 (de) * 2012-05-16 2013-11-21 Carl Freudenberg Kg Vorrichtung zum Andrücken eines Fadens an eine Spule
DE102012214850A1 (de) * 2012-08-21 2014-03-20 Stabilus Gmbh Elektromotor und Motor-Getriebe-Baugruppe sowie längenveränderbare Antriebseinrichtung mit einem derartigen Elektromotor
DE102014202279A1 (de) * 2014-02-07 2015-08-13 Bühler Motor GmbH Elektromotorischer Antrieb
DE102014218808A1 (de) 2014-09-18 2016-03-24 Continental Automotive Gmbh Lageranordnung zur Lagerung einer Welle
GB2563617B (en) 2017-06-20 2020-04-08 Dyson Technology Ltd An electric machine
DE102020212588A1 (de) * 2020-10-06 2022-04-07 Zf Friedrichshafen Ag Getriebe für ein Kraftfahrzeug, sowie elektrischer Achsantrieb

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2650866A (en) 1949-12-22 1953-09-01 Bendix Aviat Corp Bearing
GB1279516A (en) 1969-10-10 1972-06-28 Bando Kiko Co Bearing assembly
DE19818634A1 (de) 1998-04-25 1999-11-04 Weck Manfred Loslager für Spindeln, Wellen und dergleichen
FR2808759B1 (fr) 2000-05-10 2005-08-26 Koyo Seiko Co Appareil de direction assistee electrique
DE102007023456A1 (de) 2007-05-19 2008-11-20 Ab Skf Lageranordnung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011012456A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2388487A3 (fr) * 2010-05-20 2016-03-02 RBC Manufacturing Corporation Bearing Rotational Lock

Also Published As

Publication number Publication date
WO2011012456A1 (fr) 2011-02-03

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