• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Bearing arrangement (100; 200) comprising an inner ring (102: 102a) adapted to be connected to an inner member and an outer ring (104; 104a) adapted to be connected to an outer member arranged such that the inner ring (102; 102a) is in a opposite and spaced relation to the outer ring (104; 104a). Roller elements (112, 116; 112a, 116a) are arranged between the inner ring (102; 102a) and the outer ring (104; 104a). An inner flange (130; 130a) is connected to the outer ring (104; 104a), which inner flange (130; 130a) comprises in circumferentially spaced recesses (142) and extends substantially radially towards the inner ring (102; 102a). An outer flange (132; 132a) is connected to the inner ring (102; 102a). A flexible sealing member (134; 202) is in contact with both the inner flange (130; 130a) and the outer flange (132; 132a). A protective cover (136; 136a) includes tabs (180; 180a) extending through the recesses (142). The tabs (180; 180a) are connected to the outer ring (104; 104a). The inner and outer members are allowed to rotate relative to each other.
    公开号:SE1250613A1
    申请号:SE1250613
    申请日:2010-11-10
    公开日:2012-06-12
    发明作者:Collin B Milliken；John P Cook
    申请人:Emerson Power Transmission Corp；
    IPC主号:
    专利说明:

    1015202530metal particles, corrosive chemicals and water. Pollutants that migrate tothe inside of the bearing arrangement can quickly cause damage and wear tothe rolling elements which can ultimately result in bearing defects. Thus there isthe need for an improved and robust bearing sealing structure.
    SUMMARYBearing arrangement comprising an inner ring adapted to be connected toan inner member and an outer ring adapted to be connected to an outer memberarranged in such a way that the inner ring is in an opposite and spaced apart relationshipto the outer ring. Roller elements are arranged between the inner ring and the outer ring.
    An inner flange is connected to the outer ring, which inner flange comprisescircumferentially spaced recesses and extending substantially radially towards the inner ring.
    An outer flange is connected to the inner ring. A flexible sealing member is incontact with both the inner flange and the outer flange. A protective coverincludes fl ikar extending through the recesses. The tabs are connected tothe outer ring. The inner and outer members are allowed to rotate relative to each other.
    In another arrangement, a bearing arrangement includes an inner ringadapted to be connected to an inner member and an outer ring comprising asubstantially spherically shaped contact surface for roller elements. The outer ring isadapted to be connected to an external body and arranged in such a way thatthe inner ring is in an opposite and separate relationship to the outer ring.
    Roller elements are arranged between the inner ring and the outer ring and are in contactwith the contact surface for the roller elements. An inner end is connected to the outer ringand includes circumferentially spaced recesses, and extends substantially radiallytowards the inner ring. An outer flange is connected to the inner ring. An fl exibeltsealing means is in contact with a means connected to the inner ring and a meansconnected to the outer ring. A protective cover includes tabs that extendthrough the recesses. The tabs are connected to the outer ring. The internal organ and thatthe external member is allowed to rotate relative to each other along non-interconnectedfalling geometric axes.
    In another embodiment, a bearing arrangement comprises an inner ringadapted to be connected to an inner member and an outer ring adapted to be connectedto an outer member arranged in such a way that the inner ring is in an opposite and1015202530separate relationship to the outer ring. Roller elements are arranged between the innerthe ring and the outer ring. An inner flange is connected to the outer ring and comprises incircumferentially spaced recesses, and extending substantially radially towards the inner ring.
    An outer flange is connected to the inner ring. A protective cover includes tabs such asextends through the recesses. The tabs are connected to the outer ring. The outerthe flange overlaps the inner flange and the protective cover overlaps the outerthe flange. The inner member and the outer member are allowed to rotate relative toeach other.
    In another embodiment, a bearing arrangement comprises an inner ringconnected to an inner member and an outer ring connected to an outer member.
    The outer ring is arranged in an opposite and separate relationship to the inner ring.
    Roller elements are arranged between the inner ring and the outer ring. Oneflange element is connected to one of the inner ring and the outer ring, whichflange element extends substantially radially towards the other of the inner ringand the outer ring. One metallic protective cover is connected to the other bythe inner ring and the outer ring, which protective cover extends adjacentthe flange element. The inner member and the outer member are allowed to rotate inrelationship to each other.
    DRAWINGSThe drawings described herein are for illustrative purposes onlyand does not intend to limit in any way the extent ofpresent publication.
    Figure 1 is a perspective view of an embodiment of a bearing arrangementand resilient sealing elements;Figure 2a is a fragmentary cross-sectional view of a bearing arrangement andresilient sealing elements;Figure 2B is a fragmentary cross-sectional view of an alternative embodimentof a bearing arrangement and resilient sealing element;Figure 2C is a fragmentary cross-sectional view of an alternative embodimentof a bearing arrangement and resilient sealing element;1015202530Figure 3A is a fragmentary cross-sectional view of an alternative embodimentof a bearing arrangement and resilient sealing element; andFigure 3B is a fragmentary cross-sectional view of an alternative embodimentof a bearing arrangement and resilient sealing element;Figure 3C is a fragmentary cross-sectional view of an alternative embodimentof a bearing arrangement and resilient sealing element;Figure 4 is a fragmentary cross-sectional view of an alternative embodimentof a bearing arrangement and resilient sealing element with an axialmovement of bearing arrangement components shown in dashed view;Figure 5 is a fragmentary cross-sectional view of a bearing arrangement andmetallic protective cover;Figure 6 is a fragmentary cross-sectional view of an alternative embodimentof a bearing arrangement and metallic protective cover;Figure 7 is a perspective view of an alternative embodiment of oneIagerarrangemang;Figure 8 is an opposite perspective view of the bearing arrangementillustrated in Figure 7;Figure 9 is an end view of the alternative bearing arrangement;Figure 10 is a cross-sectional view taken along line 10-10 shown in Figure 9;Figure 11 is an exploded perspective view of the alternativeIagerarrangemanget; andFigure 12 is a fragmentary perspective view of another alternativeIagerarrangemang.
    DETAILED DESCRIPTIONThe following description is merely exemplary in nature and has notfor the purpose of limiting the present invention, application or use.
    It will be appreciated that the corresponding reference numerals in the drawings indicate the sameor corresponding parts and features of the various embodiments, even if theyexact structural configurations of the features may differ slightly.
    "One" or "one" as used herein indicates the existence of at leastone ”or“ at least one ”of an element but a plurality of such elements canoccur whenever possible.1015202530Figure 1 and Figure 2A illustrate an exemplary embodiment of aBearing arrangement 10, comprising a resilient sealing element 24 arrangedon an internal member which may be a shaft 16, and contained in a housing 12. Aexternal means may be connected to the bearing arrangement 10 by, for exampleuse of bolts (not shown) through holes 17 in ns ends 13 of the housing 12.
    The bearing arrangement 10 comprises an inner ring 14, which is arranged onthe shaft 16, and an outer ring 18 which is arranged in such a way that a roller bearing surface 15of the inner ring 14 is in an opposite and spaced relationship to a roller bearing surface19 at the outer ring. A plurality of roller elements 20 are arranged between the inner ring14 and the outer ring 18. It will be appreciated that although the roller elements 20 are shown asspherical balls in Figure 2A, they may be of any type of roller element 20,including, for example, needle rollers, tapered rollers and offset rollers. Furthermore, canthis despite the fact that only a single row of roller elements 20 are illustrated in this oneIn the embodiment, there are more than one row of roller elements 20 in the bearing arrangement 10.
    A rigid element, such as a flange element 22, is shown connected directly tothe inner ring 14. The flange element 22 has an extension in a substantially radialdirection towards the outer ring 18. A perpendicular part 22a and an angled part 22bextends in this substantially radial direction. As illustrated in thisIn the embodiment, the outer ring 18 (as well as the inner ring 14) may be constitutedmultiple components, 18a and 18b, connected to each other. A resilientsealing element 24 is connected to the outer ring 18 and extends therefromto be arranged adjacent the outside 26 of flange elements 22, as shown. INthis embodiment illustrates the flange member 22 and adjacentresilient sealing elements 24 such as being in close proximity to each other,resulting in a narrow gap 30 between the flange member 22 and the resilient onethe sealing element 24, for example as shown in Figure 2A. Alternatively, it canresilient sealing member 24 being in contact with flange member 22,for example as shown in Figures 2B and 2C.
    When describing the relationship between the resilient sealing element24 and the flange member 22 includes the term "adjacent" embodiments ashas a narrow gap between the resilient sealing element 24 and the flangeelement 22 (examples include Figures 2A and 3A), embodiments thereinthe resilient sealing element 24 is in contact with the flange element 221015202530(examples include Figures 2B, 2C, 3B and 3C), as well as embodimentswhere the resilient sealing member 24 is located outside the fixture member 26(examples include Figures 2A, 2C, 3A and 3C) or inside 28 flangeelement 22 (examples include Figures 2B and 3B). For example, cancontact between the sealing element 22 and adjacent resilient sealing elements24 be directly or via a molded lip seal 32 asextends from the resilient sealing member 24 as shown in the figures2C and 3C. Other embodiments include storage arrangements 10 where appropriateresilient sealing element 24 is adjacent to the sealing element 22 alonga substantial length of the resilient sealing member 24, or there alonedistal end of the resilient sealing member 24 is adjacent tothe fixture member 22. In embodiments where the resilient sealing member 24 isin contact with the flange element 22, the absence of a gap can form a zeroclearance seal between the resilient sealing member 24 andfiänseiementet 22.
    The resilient sealing element 24 can be of various materials,typically, the resilient sealing member 24 may be of polymer, rubber orelastomeric material. Exemplary material for the resilient sealingElement 24 includes: nylon, polypropylene, polymer such as TEFLON®from DuPont, fluoroelastomer such as VITON®, nitrile, ethylene acrylic elastomersuch as VAMAC®, urethane, polyimide such as VESPEL®, or other polymers,rubbers, elastomers and mixtures thereof. Other exemplary materials,comprising materials compliant with ultrasonic welding, are: poly (acrylonitrile,butadiene, styrene), i.e. acrylonitrile butadiene styrene copolymer (ABS)copolymer "), acrylic, butanediene styrene, phenyloxide-based resin, polycarbonate,polyetherimide, polyether sulfone, polystyrene, poly (vinyl chloride), acetal, cellulose,fluoropolymer, nylon, polyester, polyetheretherketone ("PEEK", "polyether-ether ketone "), polyethylene, polymethylpentene, polyphenyl sulfide and polypropylene.virtually any flexible material can be used for as long as it iscompatible with the expected operating environment of the storage arrangement 10,for example, it must be chemically and thermally stable in relation to itintended scope.1015202530Also wear properties of the selected material for the resilientthe sealing element 24 are important. Typically, it creates a contact between itresilient sealing member 24 and flange member 22 less wear for boththe resilient sealing element 24 and the end element 22 compared to onesealing elements consisting of a rigid material, such as metal. For examplecontact between a metallic sealing element and a metallic flangeelement 22 quickly wears on the metallic seal and the metallicthe flange member 22 and can irreversibly damage the effectiveness of the seal.
    The flexibility of the resilient sealing element 24 enables the element tois bent if the flange element 22 comes into contact with the resilient sealing member.element 24. Furthermore, it enables the flexible and flexible characteristics of itresilient sealing member 24 for the member to support for fl spacing therebetweenresilient sealing member 24 and flange member 22 while establishingmaintains an effective seal. In addition, the flexibility of the resilient sealingthe element 24 enable the resilient sealing element 24 to be biasedagainst the flange element 22. Embodiments of the resilient sealing element 24may further comprise tapered shapes so that if the resilient sealing memberthe element 24 is biased against the flange element 22, it remains resilientthe flange member 24 in contact with the flange member 22 while it is wearing.
    As shown in the embodiments of Figures 2A-2C, it is resilientthe sealing element 24 connected to the outer ring 18 by press fitting in areceiving channel 34. However, the resilient sealing member 24 mayalternatively connected to the outer ring 18 by various methods knownin the field. Such connection methods (not shown) include, but are not limited tolimited to, ultrasonic welding, gluing or melting of the resilientthe sealing material 24 in the heel or groove arranged in the outer ring 18. It will be appreciated thatthe connection method and the choice of material for the resilient sealing element24 may be interdependent. For example, it will be appreciated that a polymericresilient sealing element 24 shall be compatible with an adhesive such asis used to connect the resilient sealing element 24 to the outer ring 18.
    The bearing arrangement 10 may be connected to the inner member, whichcan be a shaft 16, using any suitable method.
    An exemplary method is shown in the figures, where the inner ring 14 has an axial1015202530extension 36 with a threaded hole 38 for receiving a fastening screw 40. Afastening screw 40 is screwed down against the shaft 16 to secure the inner ring 14 andthe bearing arrangement 10 to the shaft 16. For example, more than one axialextent 36 and / or mounting screw 40 can be used. Other connectorsdevices can be used to connect the shaft 16 to the bearing arrangement 10,such as, for example, compressible annular locking flanges as described in theU.S. Patents 5,863,137 and 6,908,230, which in their entiretyare incorporated herein by reference.
    Lubrication of the bearing arrangement 10 and the resilient sealing memberthe element 24 can be provided via a lubricating device 42. The lubricating device42 distributes grease or other lubricant through the outer ring 18 to lubricatethe roller elements 20. The resilient sealing element 24 can help topreserve the grease or lubricant inside the bearing arrangement 10, in additionprevention of the ingress of external pollutants. Next comes a spacebetween the end member 22 and adjacent resilient sealing member 24,such as a narrow gap 30, to tend to fill with and retain fat orlubricant when lubricating the bearing arrangement 10.
    The bearing arrangement 10 and resilient sealing element 24 can furthercomprise an additional rigid element, such as a seal carrier 44 and acooperating flexible sealing means 46. The sealing carrier 44 is shown in Figure 2Abe connected to the outer ring 18 and it extends substantially radially towardsinner ring 14. The seal carrier may be of metal. A flexible sealing member46 may be connected to the inner ring 14 via the flange member 22. The fl visiblethe sealing member 46 has at least one sealing leg 48 in sealing contact withthe sealing carrier 44. The visible sealing member 46 can function in a similar mannerway as a one-way valve that allows lubricant to moveoutwards but prevents the movement of lubricants and contaminants into thethe arrangement. Alternatively (not shown) the flexible sealing member 46 may beconnected to the outer ring 18 (for example via the seal carrier 44) and be insealing contact with the flange element 22 with at least one sealing leg 48.
    The flexible sealing member 46 may be of material similar to those describedabove in connection with resilient sealing elements 24.1015202530The seal carrier 44 may, as shown in Figures 2A-3C, be connectedto the outer ring 18 by snap-locking the seal carrier 44 over an inward portionangled heel 45. As illustrated in the drawings, a snap lock is providedby including an angled end portion on the seal carrier 44 whichcooperates with the inwardly angled lug 45. Thus, a component ofthe outer ring 18b be designed to provide clearance for the edge of the sealingthe carrier 44 when the seal carrier 44 is pressed over the outer ring 18b and snaps inin the inwardly angled lug 45 of the outer ring 18b. Connection of sealingthe carrier 44 to the outer ring 18b by snap locking provides a radialpress fit and an axial force that pulls the seal carrier 44 toward the outer ring18b, holding seal carrier 44 in place. Of course, many cansnap locking devices are provided which will be apparent to one skilled in the artin the field.
    Other non-limiting examples (not shown) include a bearingarrangement 10 with an inner ring 14, an outer ring 18, a number of roller elements 20and a sealing device, wherein the inner ring 14 and the outer ring 18 rotaterelative to each other. the inner ring 14 is connected to an inner member and the outer ring18 is connected to an external member, with the rings 14, 18 arranged in this waythat the inner ring 14 is in an opposite and spaced relationship to the outer ring 18.
    The plurality of roller elements 20 are arranged between the inner ring 14 and the outer ring.The sealing device comprises a first rigid element and aresilient sealing element 24. The first rigid element comprises asnap-locking means, which connects the first rigid element to eitherthe inner 14 or outer ring 18 such that the first rigid memberextends substantially radially towards the other of the inner 14 or outer ring18. The resilient sealing element 24 is connected to the second of the innerring 14 and outer ring 18 and extends adjacent the first rigidthe element. The bearing arrangement 10 may further comprise a second rigidelement and the second rigid element may be connected to the other ofthe inner ring 14 and the outer ring 18 by, for example, snap locking. Theresilient sealing element 24 may also be connected to the other ofthe inner ring and the outer ring 18 through the second rigid element.101520253010An alternative embodiment, shown in Figure 2B, is substantially identical toThe bearing arrangement 10 in Figure 2A, except that the bearing element 22 does notbends at its distal end, and the resilient sealing member 24 extendsfrom the outer ring 18 to be adjacent the inside 28 of the flange member22.
    In another alternative embodiment, shown in Figure 2C, it may be resilientthe sealing element 24 be in contact with an outer surface of the flange element 22,providing essentially no gap, or a zero clearance seal, betweenthe resilient sealing member 24 and the flange member 22. Contact canprovided by one or more shaped sealing rings 32 extendingfrom the resilient sealing element 24 to contact with the sealing element 22.
    One or more of the shaped sealing rings 32 may assist in preventing the exteriorcontaminants from penetrating the storage arrangement 10 and can further assistby preserving grease or lubricant between the resilient sealing element24 and the sealing element 22. In addition, the visible sealing member 46 can be constitutedof a felt insert 50 arranged between the seal carrier 44 and the flange element 22.
    The felt insert can, in addition to the advantages obtained with the resilient sealingthe element 24 further assists in preventing the ingress of contaminants andloss of lubricant.
    Other embodiments of a bearing arrangement 10 and resilientsealing elements 24 are shown in Figures 3A-C. These embodiments are usefulthe sealing carrier 44 for connecting the resilient sealing element 24 to the outerFor example, as illustrated in Figure 3A, the resilient sealing member isthe element 24 connected to the outer ring 18. This is achieved by connectionof the resilient sealing member 24 directly to the seal carrier 44 as in itsturn is connected directly to the outer ring 18.
    The resilient sealing element 24 can be connected directly tothe seal carrier 44 by various methods known in the art.
    Such connection methods include, but are not limited to, press fitagainst a receiving channel (not shown) in the seal carrier 44, ultrasonic welding,gluing or melting the resilient sealing material 24 into holes or grooves(not shown) arranged in the seal carrier 44.101520253011As shown in Figure 3A, the resilient sealing member 24 extendsadjacent outside 26 of the flange member 22. The resilient sealing member24 forms a gap 30 with the flange element 22. Figure 3B shows an embodimentwhere the resilient sealing element 24 is connected to the sealing carrier 44 andextends adjacent the inside of the sensing element 22, and as illustrated,is in direct contact with the flange element 22. Additional sealing functions,such as a flexible sealing member 46 (an exemplary embodiment is shown infigure 3B) or a felt insert 50 (an exemplary embodiment is shown in figure3C) may be included in the bearing arrangement 10. Figure 3C illustrates an embodimentshape where the resilient sealing element 24 is connected to the outer ring 18 viathe sealing carrier 44 and where the resilient sealing element 24 is in contactwith the flange element 22 via a shaped sealing ring 32.
    Figure 4 illustrates movement of a flange member 22 and a springsealing elements 24 relative to each other. Movement can be a result of heatexpansion of the bearing arrangement 10 in its entirety or thermal expansion ofdifferent components of the bearing arrangement 10. Correspondinglymovement be a result of wear of components of the bearing arrangement 10.
    Movement within the bearing arrangement 10 may be radial and / or axial. Oneexamples of an axial movement are illustrated in Figure 4. The flange element 22 is shownconnected to an inner ring 14 and the resilient sealing element 24 is connectedto the outer ring 18 by press fitting in a receiving channel 34. In itillustrated embodiment, the resilient sealing member 24 is biasedagainst the flange element 22. When the inner ring 14 and the outer ring 18 move radially inrelative to each other, the resilient sealing member moves and / or slidesthe member 24, which is biased toward the flange member 22, alongthe flange member 22, but maintains contact with or a narrow gap 30 againstthe flange element 22 due to the flexible characteristic of the resilientthe sealing element 24. Accordingly, the resilient sealing element 24maintain an effective seal with the flange member 22 whilethe bearing arrangement 10 expands and / or moves as a result oftemperature changes and / or wear.
    Alternative embodiments (not shown) may include a bearingarrangement 10 and a resilient sealing element 24 where the location of101520253012the flange member 22 and the resilient sealing member 24 are reversed inrelation to the inner ring 14 and the outer ring 18. A flange element 22 can be providedexample or be connected to the outer ring 18 of the bearing arrangement10, the flange member 22 extending substantially in a radial directionagainst the inner ring 14. Accordingly, the resilient sealing member 24 wouldbe connected to the inner ring 14 and extend substantially radially towardsthe outer ring 18 to be adjacent the flange member 22. Alternativeembodiments also include solutions to which the flange member 22 is connectedthe outer ring 18 and the seal carrier 44 are connected to the inner ring 14. In theseembodiments, the resilient sealing member 24 is connected to the sealing member.the carrier 44 and extends substantially radially toward the outer ring 18 to beadjacent flange member 22.
    Figures 5 and 6 illustrate alternative storage arrangements 10 foruse with components such as a shaft 16 and a housing 12. Theyalternative storage devices include a metallic protective cover insteada resilient sealing member 24, which has been described previously. A stiffmetallic protective cover can provide additional protection against externalpollutants. Some operating environments are particularly difficult where falling particles andabrasive particles may be present. A metallic protective cover can alsoprovide a robust design where superior impact resistance is desired. Furthermetals typically provide superior abrasion resistance when comparedwith different polymeric materials. A metallic protective cover can also beless susceptible to deformation and other dimensional variations atcomparison with polymeric materials. Metal components can be shapedwithin a narrower tolerance range at a relatively economical tool cost.
    The material properties of metals allow for alternative connectionmethods including press fitting. A residual stress inside the metal canmaintained within an elastic deformation range while polymeric materialstypically are prone to crawling and settling.
    Figure 5 illustrates an alternative bearing arrangement 60.the arrangement 60 is substantially similar to the bearing 10 illustrated in Figure 3A.
    Thus, similar elements will be identified by their pastintroduced reference numerals. The storage arrangement 60 differs101520253013from the device illustrated in Figure 3A by the resilientthe sealing element 24 is replaced by a metallic protective cover 62, which isconnected to seal carrier 44. The metallic protective cover 62 includes asubstantially conically shaped portion 64 which overlaps the outside 26 of the flangeelement 22. A gap 30 extends between the protective housing 62 and the flangeelement 22. Gap 30 can be maintained by the operation of the bearing due to thatthe protective cover 62 is arranged on the outer ring 18b.
    The protective cover 62 further includes a substantially axially extending oneflange portion 66 press-fitted to the seal carrier 44. Alternative connectionmethods such as welding, gluing, riveting, wedging, pressing and othersconsidered to be within the scope of the present description. By arrangingthe protective cover 62 as illustrated in Figure 5, the volume of the space asformed by gap 30 preserve lubricant if desired. Gap between sealingthe carrier 44, the inner ring 14, the end member 22 and the protective cover 62 may befilled with lubricants to further prevent the ingress of contaminants.
    Furthermore, it will be appreciated that even when the protective cover 62 is illustrated in usetogether with the flexible sealing member 46, other sealing meansarrangements are protected with the protective cover 62. In one embodiment it does not existflexible sealing member 46 with. penetration of pollutants is limitedthrough the labyrinthine path formed between the protective cover 62 andthe flange element 22.
    Other variations of the bearing 60 are also possible. In particular, another canarrangements include a metallic protective cover 62 with an elastomericflexible sealing leg similar to member 22b shown in Figure 3C. The flexiblethe sealing leg engages sealingly with the flange element 22. The flexible sealingthe leg can be connected to either the protective cover 62 or flange element 22.
    Figure 6 illustrates another alternative storage arrangement withreference numeral 74. The bearing 74 is substantially similar to the bearing 10 illustratedin Figure 2A. Thus, equal parts are indicated with their previously introduced onesreference numerals. Bearing arrangement 74 includes a metallic oneprotective cover 76 instead of the resilient sealing element 24. Depending onthe particular construction desired, the channel 34 may be provided with ornot included. If the channel 34 is provided, the protective cover 76 may101520253014include a radially outwardly extending tab 78 disposed within the channel 34. In oneanother alternative arrangement shown on the right side in Figure 6 includesnot the protective cover 76a the tab 78. The metallic protective cover 76a is pressedadapted to the outer ring 18a.
    Other variations of the bearing 74 are also possible. In particular, another canarrangements include a metallic protective cover 76 with an elastomericflexible sealing leg similar to element 22b shown in Figure 2C. The flexiblethe sealing leg engages sealingly with the flange element 22.
    Figures 7-12 illustrate an alternative bearing arrangement 100comprising an inner ring 102 and an outer ring 104 arranged so as toa first bearing surface 106 and a second bearing surface 108 formed on the inner ring 102is in an opposite and spaced relationship to a roller bearing surface 110 ofthe outer ring 104. A first number of roller elements 112 are held in a circumferential directionseparately through a first bearing holder 114. Similarly, a seconda plurality of roller members 116 held by a second bearing holder 118. The roller members112, 116 are illustrated as elongate barrel-shaped elements. Aspreviously mentioned, other types of rolling elements are considered to be within the scope ofpresent description.
    A first sealing and protective cover combination 120 is associated witha first side 122 of the outer ring 104. A second sealing and protective covercombination 124 is joined to a second opposite side 126 of the outerring 104. The first sealing and protective cover combination 120 issubstantially similar to the second sealing and protective cover combination 124.
    Therefore, only the first sealing and protective cover combination willdescribed in detail.
    The first sealing and protective cover combination 120 includes ainner flange 130, an outer flange 132, a seal 134 and a protective cover 136. Thethe inner flange 130 includes a substantially conically shaped portion 137, a radialoutwardly extending flange portion 138 and a broken edge portion 140. Such asmost clearly illustrated in Figure 11, a plurality of circumferentially extending members extendrecess 142 through the edge portion 140 and extends partially through the flange portion138. The inner end 130 may be of low carbon steel, aluminum orother metallic material.101520253015The inner ring 130 is connected to the outer ring 104 when the first ringroller elements 112 and the second plurality of roller elements 116 are providedconnection to the bearing surfaces 106, 108 on the inner ring and the bearing surface 110 onthe outer ring. More specifically, an axial installation force is applied to the interiorthe flange 130 to press fit the edge portion 140 to an outer substantiallycylindrical surface 146 arranged near the first side 122. The force continues toapplied to the inner flange 130 until a first surface 148 of the end portion 138engages a first end face 150 on the outer ring 104. It will be appreciated that the surface 146may be designed as a straight cylindrical surface or alternatively may comprise oneconical shape, as shown in Figure 10, to facilitate attachment of the interiorthe flange 130 and the protective cover 136 to the outer ring.
    The outer end 132 comprises an annular body 154, asubstantially cylindrical sleeve portion 156, a conical portion 158 and a mounting edge 160.
    The inner sleeve portion 156 is dimensioned to engage a cylindrical portion 164with the inner ring 102 in a press-fitted arrangement. As best shown in the figure10, the outer flange 132 is axially arranged to overlap the inner flange130 with retained clearance between the mounting edge 160 and the substantially conical onethe part 137 of the inner flange 130. The outer flange 132 may be of steelwith low carbon content, aluminum or other metal.
    Seal 134 is attached to the outer end 132 and is dimensioned toprotrude beyond a distal end 166 of the mounting edge 160 for sealing actionwith an outer surface 170 of the substantially conically shaped portion 137. Such aspreviously mentioned in connection with the embodiments illustrated in the figures2a, 2b and 2c, seal 134 may include felt. Foam or other elastomericmaterials can otherwise be used. Alternatively, the element 134 may be designed asa flexible sealing member 202 similar to the flexible sealing member 46 withat least one sealing leg in sealing contact with the inner flange 130, such asshown in Figure 12 and later described. In another alternative arrangement canthe seal 134 is completely excluded. In this arrangement it is possible tolubricants such as bearing grease are provided between the inner shaft 130and the inner ring 102, between the outer ring 132 and the inner flange 130 andinside gaps formed between the inner flange 130, the outer flange 132 andthe protective cover 136. Grease can also be cleared through the labyrinthine path which101520253016bounded by these components. In yet another embodiment,the spaces between the inner flange 130, the outer flange 132 andthe protective cover 136 be emptied of lubricant or only partially befilled with lubricant. The maze-shaped path will continueto prevent the ingress of external pollutants due to the overlap ofthe various components.
    The protective cover 136 comprises a substantially conically shaped part 174, acylindrically shaped portion 176, a radially extending flange portion 178 and aplurality of axially extending tabs 180. The tabs 180 are circumferentially spaced apartapart and dimensioned to fit in the recesses 142 of the interiorthe flange 130. The tabs 180 are further dimensioned to engage the outercylindrical surface 146 of the outer ring 104 with a grip fit. The tabs 180extends through the recesses 142 to attach the protective cover 136 directly tothe outer ring 104. The protective housing 136 may comprise steel, aluminum or othermetallic material.
    When the protective cover 136 is fully installed, it engages radiallyextending flange portion 178 with a second surface 182 of flange portion 138. Itthe conical portion 174 overlaps the conical portion 158 of the outer flange132. A minimum clearance is maintained between the protective cover 136 and the outer flange132 to minimize the size of an intrusion path for contaminantswhile maintaining undisturbed relative rotation between the inner ring 102 and the outer ring104 is allowed. The play between the protective cover 136 and the outer 132 end 132 as wellthe clearance between the inner end 130 and the inner ring 102 allows relative axialangular displacement between the axis of rotation 184 of the outer ring and the axis of rotation186 of the interior without collision between the relatively rotating onesthe components.
    Figure 12 illustrates another alternative storage arrangement withreference numeral 200. The bearing arrangement 200 is substantially the samethe bearing arrangement 100. Thus, equal parts will retain their former onesintroduced reference numerals including "one" or "one".
    The bearing arrangement 200 in particular comprises a flexible sealing member 202connected to the outer end 132a. The flexible sealing member 202 includesat least one sealing leg 204 arranged in a projecting manner to be in101520253017sealing contact with the substantially conically shaped portion 137a of the interiorthe flange 130a. The flexible sealing member 202 can act as a non-return valvewhich allows lubricant to be removed from the roller elements 112a butlimiting the flow of lubricants and contaminants to the roller elements 112a.
    The flexible sealing member 202 may alternatively be attached to the inner end130a and be in sealing contact with the outer flange 132a. It is meant thatthe flexible sealing member 202 may be made of any resilient materialat any time, including those described in connection with the resilientthe sealing element 24.
    Alternative embodiments (not shown) may include a bearingarrangement and protective housing (62, 76, 136) where the location of the flange member22 and the protective cover is inverted relative to the inner ring 14 andthe outer ring 18. For example, a flange element 22 may alternatively be connected tothe outer ring 18 of the bearing arrangement 10, the flange element 22 beingextend substantially in a radial direction towards the inner ring 14. Consequentlythe protective cover would be connected to the inner ring 14 and extend substantiallyradially towards the outer ring 18 to be adjacent the flange element 22.
    Alternative embodiments also include where the flange member 22 is connectedto the outer ring 18 and the seal carrier 44 is connected to the inner ring 14. IIn these embodiments, the protective cover is connected to the seal carrier 44 andwould extend substantially radially toward the outer ring 18 to beadjacent flange member 22.
    Correspondingly, further embodiments of the bearingarrangement 10, resilient sealing element 24, bearing arrangement 100 andbearing arrangements 200 further include other structures, auxiliary seals andend caps commonly used in warehouse arrangements. For examplesuch structures may comprise a face seal as describedin U.S. Patent No. 5,704,719 or a cover as described thereinU.S. Patent No. 6,581, 939, which are hereby incorporated byreference. In the spherical bearing arrangements previously described arethe room orientation and the space between the protective cover and the exteriorthe flange maintained at a certain distance. The protective cover provides protection againstimpurities during angular displacement of the outer ring in relation to18inner ring. Furthermore, relative axial movement can take place between an external member, such as18a (Figure 6) and the outer ring 18b. The predetermined relationship in the roombetween the protective cover and the outer flange is maintained in the constructionthe variations illustrated in Figures 5 and 7-12.
    The description of the invention is merely exemplary in nature,and variations that do not deviate from the essence of the invention are thusintended to be within the scope of the invention. Such variations should notconsidered to deviate from the spirit and scope of the invention.
    权利要求:
    Claims (32)
    [1]
    A bearing arrangement comprising: an inner ring adapted to be connected to an inner member; an outer ring adapted to be connected to an outer member and arranged in such a way that the inner ring is in an opposite and spaced relation to the outer ring; roller elements arranged between the inner ring and the outer ring; an inner flange connected to the outer ring, the inner flange comprising circumferentially spaced recesses and extending substantially radially towards the inner ring; an outer flange connected to the inner ring; a flexible sealing member in contact with both the inner flange and the outer flange; and a protective cover comprising tabs extending through the recesses, the fls being connected to the outer ring, and allowing the inner member and the outer member to rotate relative to each other.
    [2]
    Bearing arrangement according to claim 1, wherein the inner flange and the protective cover are connected to the outer ring by press fitting.
    [3]
    Bearing arrangement according to claim 1, wherein the outer flange overlaps the inner flange and the protective cover overlaps the outer flange.
    [4]
    A bearing arrangement according to claim 1, wherein the visible sealing means comprises felt.
    [5]
    A bearing arrangement according to claim 1, wherein the roller elements are separated from each other in circumferential direction and held in a first bearing holder.
    [6]
    Bearing arrangement according to claim 5, further comprising further roller elements separated from each other in circumferential direction and held in a second bearing holder, the further roller elements being axially separated from the roller elements and arranged between the inner ring and the outer ring.
    [7]
    Bearing arrangement according to claim 1, wherein the outer flange is connected to the inner ring by press fitting.
    [8]
    A bearing arrangement according to claim 1, wherein the inner flange comprises a radially extending flange portion which engages an end surface of the outer ring.
    [9]
    A bearing arrangement according to claim 1, wherein the outer ring comprises a spherically shaped surface which engages the roller elements so that the outer ring is allowed to rotate about a geometric axis which does not coincide with a geometric axis of the inner ring.
    [10]
    10. comprises a metallic material. Storage arrangement according to claim 1, wherein the protective cover
    [11]
    Bearing arrangement according to claim 1, wherein the flexible sealing means comprises a projecting sealing leg in sealing contact with the inner flange.
    [12]
    An inner ring adapted to be connected to an inner member; Bearing arrangement comprising: an outer ring comprising a substantially spherically shaped contact surface for roller elements, the outer ring being adapted to be connected to an outer member and arranged in such a way that the inner ring is in an opposite and spaced relation to the outer ring; roller elements in contact with the contact surface of the roller elements, the roller elements being arranged between the inner ring and the outer ring; An inner flange connected to the outer ring comprising circumferentially spaced recesses, the inner flange extending substantially radially towards the inner ring; an outer flange connected to the inner ring; a flexible sealing member in contact with a member connected to the inner ring and a member connected to the outer ring; and a protective cover comprising tabs extending through the recesses, the tabs being connected to the outer ring, the inner member and the outer member being allowed to rotate relative to each other along non-coincident geometric axes.
    [13]
    The flange overlaps the inner fl end and the protective cover overlaps the outer Bearing arrangement according to claim 12, wherein the outer fl end.
    [14]
    14. overlaps the inner flange. Warehouse arrangement according to claim 13, wherein the protective cover
    [15]
    15. the sealing means comprises felt. Warehouse arrangement according to claim 12, wherein the flexible
    [16]
    The flange comprises a radially extending flange portion which engages a Bearing arrangement according to claim 12, wherein the inner end surface of the outer ring.
    [17]
    17. comprises a metallic material. Bearing arrangement according to claim 12, wherein the protective cover
    [18]
    The sealing means comprises a projecting sealing leg in sealing contact with the bearing arrangement according to claim 12, wherein the flexible inner flange. 10 15 20 25 30 22
    [19]
    19. an inner ring adapted to be connected to an inner member; Bearing arrangement comprising: an outer ring adapted to be connected to an outer member and arranged in such a way that the inner ring is in an opposite and spaced relation to the outer ring; roller elements arranged between the inner ring and the outer ring; an inner flange connected to the outer ring comprising circumferentially spaced recesses, the inner flange extending towards the inner ring; an outer flange connected to the inner ring; and a protective cover comprising tabs extending through the recesses, the tabs being connected to the outer ring, the outer flange overlapping the inner flange, the protective cover overlapping the outer flange, and the inner member and the outer member being allowed to rotate relative to each other.
    [20]
    Bearing arrangement according to claim 19, wherein the inner flange and the protective cover are connected to the outer ring by press fitting.
    [21]
    Bearing arrangement according to claim 20, wherein the roller elements are separated from each other in circumferential direction and held in a first bearing holder.
    [22]
    A bearing arrangement according to claim 21 further comprising further roller elements spaced apart from each other and held in a second bearing holder, the further roller elements being axially separated from the roller elements and arranged between the inner ring and the outer ring.
    [23]
    Bearing arrangement according to claim 22, wherein the outer flange is connected to the inner ring by press fitting.
    [24]
    A bearing arrangement according to claim 23, wherein the inner flange comprises a radially extending flange portion which engages an end surface of the outer ring. 10 15 20 25 30 23
    [25]
    Bearing arrangement according to claim 24, wherein the outer ring comprises a spherically shaped surface which engages the roller elements so that the outer ring is allowed to rotate about a geometric axis which does not coincide with a geometric axis of the inner ring.
    [26]
    A bearing arrangement comprising: an inner ring connected to an inner member; an outer ring connected to an outer member and arranged in such a way that the inner ring is in an opposite and separate relationship to the outer ring; a plurality of roller elements disposed between the inner ring and the outer ring; a flange member connected to one of the inner ring and the outer ring, the flange member extending substantially radially towards the other of the inner ring and the outer ring; and a metallic protective cover connected to the other of the inner ring and the outer ring, the protective cover extending adjacent the end member; wherein it is possible for the inner member and the outer member to rotate relative to each other.
    [27]
    A bearing arrangement according to claim 26, wherein the protective cover is connected to the other of the inner ring and the outer ring by press fitting.
    [28]
    A bearing arrangement according to claim 26, further comprising: a seal carrier extending substantially radially towards one of the inner ring and the outer ring, the seal carrier being connected to the other of the inner ring and the outer ring.
    [29]
    A bearing arrangement according to claim 28, wherein the metallic protective cover is connected to the other of the inner ring and the outer ring by the seal carrier. 10 24
    [30]
    A bearing arrangement according to claim 29, wherein the protective cover comprises an edge which engages with an edge of the seal carrier in a press fit.
    [31]
    A bearing arrangement according to claim 28, further comprising: a flexible sealing member connected to one of the sealing carrier and the flange element, the flexible sealing member having at least one sealing leg in contact with the other of the sealing carrier and the flange element.
    [32]
    A bearing arrangement according to claim 26, wherein the metallic protective housing maintains a spaced relationship with the flange member during movement of the inner ring relative to the outer ring.
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    同族专利:
    公开号 | 公开日
    BR112012011407A2|2018-04-03|
    DE112010004378T5|2012-09-13|
    WO2011060041A3|2011-09-29|
    US20100054645A1|2010-03-04|
    CA2780928C|2018-04-10|
    CA2780928A1|2011-05-19|
    MX2012005489A|2012-07-10|
    US8333515B2|2012-12-18|
    SE536928C2|2014-11-04|
    WO2011060041A8|2011-11-17|
    CN102803769B|2016-08-17|
    DE112010004378B4|2015-06-03|
    WO2011060041A2|2011-05-19|
    CN102803769A|2012-11-28|
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    法律状态:
    2019-07-02| NUG| Patent has lapsed|
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    PCT/US2010/056187|WO2011060041A2|2009-11-13|2010-11-10|External bearing shroud|
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