• 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:
    The invention relates to a component (10) of a laminated bearing assembly (11) for movably coupling an inner member (1) to an outer member (2), the outer member (2) having a bore (3) ). The bearing component (10) comprises a laminated body (12) which can be arranged in the outer element bore (3) and having an inner radial end (12a) connectable to the inner element (1). ) and an outer radial end (12b) connectable to the outer member (2). The body (12) is formed of a plurality of generally arcuate elastomeric (18n) and metal (20n) lamellae, generally nested around a central axis (Ac), each of the elastomeric (18n) and metal lamellae (20n) having opposed first and second arcuate ends (18a, 18nb, 20na, 20nb) and inner and outer circumferential surfaces (19A, 19B, 21A, 21B) extending circumferentially between the first and second arcuate ends (1). 8na, 18nb, 20na, 20nb). Each metal strip (20n) has a circumferentially varying radial thickness (tRM) between a first value (VM1) at the first radially widest first arcuate end (20na) and a second value (VM2) less than the second arcuate end (20nb). ) radially the narrowest.
    公开号:FR3069592A1
    申请号:FR1856955
    申请日:2018-07-26
    公开日:2019-02-01
    发明作者:Jeffrey L. George
    申请人:SKF AB；
    IPC主号:
    专利说明:

    CORNER-SHAPED ELASTOMERIC BEARING COMPONENT
    BACKGROUND OF THE INVENTION
    The present invention relates to bearings, and more particularly to laminated elastomer bearings used in applications such as helicopter rotors.
    Layered elastomeric bearings are known and comprise a plurality of alternating nested elastomeric and metallic layers, generally arranged coaxially around a center line. Such bearings allow movement of a component, such as a centering pin of a pitch variation axis, in order to pivot or “twist” around the center line of the bearing and / or to partially pivot around d 'one or more axes generally perpendicular to the center line. Such bearings are effective in applications such as the torsional support of a tail rotor shaft or the pitch variation axis of a rotor assembly, but may experience premature failure of the elastomer layers in certain sections of the bearing which experiences relatively larger amounts of tensile or shear load.
    SUMMARY OF THE INVENTION
    In one aspect, the present invention is a component of a laminate bearing assembly for movably coupling an interior member to an exterior component, the exterior component having a bore. The bearing component includes a laminate body which can be disposed inside the bore of the outer member and which has an inner radial end which can be connected to the inner member and an outer radial end which can be connected to the member outside. The body is formed of a plurality of elastomeric and metal lamellae, generally arcuate, alternately, generally fitted around a central axis, each of the elastomeric and metal lamellae having first and second opposite arcuate ends and circumferential interior and exterior surfaces. extending in circumference between the first and second arcuate ends. Each metal strip has a radial thickness varying in circumference between a first value at the first radially widest arcuate end and a second value less than the second radially narrowest arcuate end.
    According to another aspect, the present invention is a laminated bearing assembly for movably coupling an interior element to an exterior element, the interior element having a central axis and the exterior element having a bore. The bearing assembly includes at least two laminate bearing components each of which may be disposed at least partially in the bore of the outer member and having an inner radial end which can be connected to the inner member so as to be spaced around of the central axis, and an external radial end which can be connected to the external element. Each bearing component comprises a laminated body formed of a plurality of elastomeric and metallic lamellae, generally arcuate, alternately, generally fitted around a central axis, each of the elastomeric lamellae having first and second opposite arcuate ends and inner and outer circumferential surfaces extending in circumference between the first and second arcuate ends. Each metal strip is generally wedge-shaped and has a radial thickness varying in circumference between a first value at the first radially widest arcuate end and a second value less than the second radially narrowest arcuate end.
    According to another aspect, the present invention is a mechanical assembly comprising an interior element having a central axis and an exterior element having a bore, at least one of the interior and exterior elements that can be moved angularly around the central axis . At least one laminate body is disposed in the bore of the outer member and has an inner radial end connected to the inner member and an outer radial end connected to the outer member. The body is formed of a plurality of elastomeric and metallic lamellae, generally arcuate, alternately, fitted in a generally coaxial manner around a central axis, each of the elastomeric and metallic lamellae having first and second opposite arcuate ends and circumferential surfaces. inner and outer extending in circumference between the first and second arcuate ends. Each metal strip is generally wedge-shaped and has a radial thickness varying in circumference between a first value at the first radially widest arcuate end and a second value less than the second radially narrowest arcuate end.
    According to another embodiment, each of the elastomeric and metallic lamellae is either partially spherical so that the interior surface of each of the elastomeric and metallic lamellae is generally concave and the exterior surface of each of the elastomeric and metallic lamellae is generally convex; either substantially cylindrical circular; is substantially conical.
    BRIEF DESCRIPTION OF THE RESPECTIVE VIEWS OF THE DRAWINGS
    The foregoing summary, as well as the detailed description of the preferred embodiments of the present invention, will be better understood when read in conjunction with the accompanying drawings. For the purpose of illustrating the invention, the presently preferred embodiments are shown in the drawings which are schematic. However, it should be understood that the present invention is not limited to the precise arrangements and methods shown. In the drawings:
    Figure 1 is a perspective view of a first construction of a bearing component according to the present invention;
    Figure 2 is a front plan view of the bearing component of the first construction; Figure 3 is a radial cross-sectional view along line 3-3 of Figure 2;
    Figure 4 is an enlarged view of a portion of Figure 3;
    Figure 5 is another enlarged view through a portion of Figure 3;
    Figure 6 is an axial cross-sectional view along line 6-6 of Figure 3;
    Figure 7 is an axial cross-sectional view along line 7-7 of Figure 3;
    Figure 8 is a top plan view of the first bearing construction, showing another exemplary structure of interior and exterior connectors;
    Figure 9 is a top plan view of a bearing assembly formed of two of the bearing components of the first construction and showing interior and exterior elements;
    Figure 10 is a perspective view of a second construction of the bearing component according to the present invention;
    Figure 11 is a front plan view of the bearing component of the second construction;
    Figure 12 is a radial cross-sectional view along line 12-12 of Figure 11; Figure 13 is an enlarged view of a portion of Figure 12;
    Figure 14 is an axial cross-sectional view along line 14-14 of Figure 12; Figure 15 is an axial cross-sectional view along line 15-15 of Figure 12; Figure 16 is a front plan view of the bearing component of the first construction, shown to be formed in an asymmetrical configuration;
    Figure 17 is an axial cross-sectional view of a bearing component having lamellae alternately formed each with a partially cylindrical circular shape; and Figure 18 is an axial cross-sectional view of the bearing component having lamellae alternately formed each with a partially conical shape.
    DETAILED DESCRIPTION OF THE INVENTION
    Certain terminology is used in the following description for practical reasons only and not limiting. The words "interior", "inward" and "exterior", "outward" refer to directions approaching and departing respectively from a designated center line or from a geometric center of a element in the course of description, the particular meaning coming easily from the context of the description. In addition, as used herein, the words "connected" and "coupled" are each intended to include direct connections between two elements with no other element interposed therebetween and indirect connections between elements in which a or several other elements are interposed between them. The terminology includes the words specifically mentioned above, their derivatives and words of similar scope.
    Referring now to the detail drawings, where the same numbers are used to indicate similar elements everywhere, Figures 1 to 18 show a component 10 of a laminate bearing assembly 11 for movably coupling an inner element 1 central to an external element 2 of a mechanical assembly, the external element 2 having a bore 3 (see FIG. 9). Preferably, the interior and exterior elements 1, 2 are components of a hub and blade assembly for rotary-wing aircraft, such as for example a tail rotor shaft and a casing attached to an aircraft cell (not shown), but can be used to support any interior and exterior elements 1, 2 which are relatively mobile, other than for a rotary wing aircraft. The bearing component 10 in principle comprises a laminated body 12 which can be disposed in the bore 3 of the external element 2, the body 12 having internal and external radial ends 12a, 12b and opposite to first and second circumferential sides 12c , 12d, respectively, and preferably includes interior and exterior connectors 14, 16, respectively. The inner radial end 12a of the body can be connected to the inner member 1, preferably by means of the inner connector 14, and the outer radial end 12b of the body can be connected to the outer member 2, preferably by means of the external connector 16.
    The laminated body 12 is formed of a plurality of elastomeric and metallic lamellae, generally arcuate, alternately, 18 n , 20 n , respectively, generally fitted around a central axis Ac. That is to say the strips 18 n , 20 n alternate between a first radially innermost elastomeric strip 18 1 , a first radially innermost metal strip 20 1 , spaced radially outward from the first elastomer strip 18 1 and attached thereto, a second elastomeric strip 18 2 spaced radially outward from the first metal strip 20 1 and attached thereto, etc., a second metal strip 20 2 spaced radially outward from the second elastomeric strip 18 2 and attached to it, etc., as shown in FIGS. 4 and 13. In addition, with the fitted strips 18 n , 20 n , the radial dimension Reü, Rmü of each strip 18 n , 20 n respectively, generally increases in an outward direction from the central axis Ac, as shown in Figure 5. Preferably, the elastomeric lamellae 18 n are formed of materials of different es rigidity, so that the innermost lamella 18 1 has the greatest rigidity and the outermost lamella 18 n , for example 18 5 as shown, has the lowest or smallest rigidity. However, the elastomeric strips 18 n can each have the same stiffness or stiffnesses which vary in any desired manner.
    Each of the elastomeric strips 18 n and of metal 20 n has first and second opposite arcuate ends I8a, 18b and 20a, 20 n b, respectively, and a circumferential length Le extending between the first and second arcuate ends 18 n a, 18 n b or 20a, 20b. Each lamella 18 n or 20 n also has inner and outer circumferential surfaces 19A, 19B and 21 A, 21 B, respectively, extending in circumference between the first and second arcuate ends I8a, 18 n b and 20a, 20 n b , and the opposite axial ends 18 n c, 18 n d and 20 n c, 20 n d, respectively, generally spaced along the central axis Ac. In addition, each metal lamella or "wedge" 20 n is generally wedge-shaped and has a radial thickness irm which "thins" or varies in circumference, and preferably in a linear fashion directly between a first value vmi to the first radially widest arcuate end 20 n a and a second lower value vm2 at the second radially narrowest arc end 20 n b, as shown in Figures 3 and 12.
    In a first construction, currently preferred and shown in FIGS. 1 to 9 and 16, each elastomeric strip 18 n is formed so as to have a substantially constant radial thickness between the first and second arcuate ends 18a, 18b. With 20 n metal lamellae / shims of variable thickness, fitted with / between an elastomeric lamella 18 n of generally constant thickness, the laminated body 12 is formed so that the first circumferential side 12c has a first radial length Lri which is substantially greater than a second radial length Lr2 on the second circumferential side 12d of the body, as indicated in FIGS. 3, 5, 12 and 13. Specifically, the greater radial length Lri on the first side 12c of the body, and therefore the longer large spacing distance dsi between the internal and external connectors 14, 16, is due to the stacking of all the arcuate ends 20 to the radially widest of the metal strips 20 n . Conversely, the shorter radial length Lr2 on the second side 12d of the body, and the smaller or lesser spacing distance ds2 between the connectors 14, 16, results from all of the radially most arcuate ends 20 n b narrow metal slats / shims 20.
    Referring to Figures 3 and 5, with such a layered structure of the body, the inner connector 14 preferably has an outer surface 36 with a radius Rie generally constant around the central axis Ac and the outer connector 16 has an inner surface 42 with a radius Roc around the central axis Ac which varies between a first value n proximal to the first circumferential side 12c of the laminated body and a second value less n proximal to the second circumferential side 12d of the laminated body, as shown in FIG. 5 Thus, a spacing distance Ds between the internal connector 14 and the external connector 16 has a first value d s i on the first circumferential side 12c of the laminated body and a second lower value d S 2 on the second circumferential side 12d of the laminated body. In other words, the spacing between the inner and outer components 14, 16 is substantially greater on the first circumferential side 12c of the laminate body compared to the spacing on the second circumferential side 12d. In addition, the external connector 18 is preferably formed by having a radial thickness toc tapering away from the direction of thinning of the shims 20 n , so that the external surface 43 of the connector is generally centered around the central axis Ac, that is to say that it has a radius R02 with a constant value around the axis Ac, and such that a spacing distance Sco between the external surface 36 of the internal connector and the external surface 43 of the external connector is also generally constant (see FIG. 3). In particular, the external thickness toc of the connector increases from a first lower value tci value generally adjacent to the first side 12c of the laminated body to a second higher tc2 value, generally adjacent to the second side 12d of the body, as indicated in FIG. 3 .
    Thanks to the wedge-shaped metal shims 20 n and to the differences in the spacing distance dsi, ds2 on each side 12c, 12d of the body, respectively, caused by them, the total deformation of the elastomeric lamellae 18 n is reduced by comparison with conventional laminate bearings and at least a substantial portion of each elastomeric lamella 18 n remains in a state of compression instead of a state of tension, when the load is applied to the bearing component 10 in a specific manner. In particular when a torque Ti is applied to the internal element 1 in a first counterclockwise direction Di, the “front” portion of each elastomeric strip 18 extending inwards from the first end 18a of the strip is deformed towards the side 12d of the body having the shortest spacing distance ds2, compressing each elastomeric strip 18 n between adjacent metal shims 20 n to reduce the tension load and / or increase the compression on each front portion of elastomeric strip, as indicated in FIG. 3. Conversely, when a torque T2 is applied to the external element 2 in a second clockwise direction D2, the rear portion of each elastomeric strip 18 n extending inwards from a second end I8b of the strip is deformed towards portions of the two adjacent metal strips 20 having an increasing thickness im, which thus induces a compress sion on the portion (s) of each strip 18 n normally having a tendency to be pulled or stretched under tensile load, as also indicated in FIG. 3.
    Referring to Figures 10 to 15, in a second bearing component construction, each elastomeric strip 18 n has a radial thickness varying in circumference, preferably linearly, directly between a first value vei the first radially arched end the widest 18 a and a second lower value ve2 at the radially narrowest second arcuate end 18 n b, that is to say vei> ve2, as shown in FIG. 12. With such a thickness of elastomeric lamella variable, the elastomeric strips 18 n and the metal strips 20 n are preferably arranged in such a way that the radially narrowest end 18 b of each of at least a portion of the elastomeric strips 18 n is generally arranged between the ends 20 n b radially the widest of two adjacent metal strips 20 n , and vice versa. Preferably, the strips 18 n , 20 n are dimensioned so that the radial length Lr (not indicated) at each end of the side 12c, 12d of the body, and therefore the spacing distance Ds (FIG. 12) between the connectors interiors and exteriors 14, 16, is substantially equal or constant. As such, the external connector 16 preferably has a generally constant radial thickness toc between the interior and exterior surfaces 42, 43, which are both generally centered around the central axis Ac. However, each or both of the interior and exterior connectors 14, 16 can / can be formed by having a variable radial thickness tick, knock when it is / are used with the strips 18 n , 20 n formed so that the spacing distance Ds is substantially equal / constant.
    With such a lamella structure, it is possible to envisage arranging at least a portion of the metal lamellae 20 n in pairs 22 of adjacent internal and external metal lamellae 20 n , as indicated in FIG. 13. In such an arrangement, certain metal lamellae
    20 n are each an outer strip 20 n in a pair 22 and an inner strip 20 n in an adjacent pair 22 (that is to say except the innermost strip 20 1 and the outermost strip 20 n ). In each pair 22 of metal strips, the external surface 21B of the internal metal strip 20 n and the internal surface 21A of the external metal strip 20 n generally converge radially in the first counterclockwise angular direction Di around the central axis Ac, as indicated in FIG. 13. Thus, each of the elastomeric lamellae 18 n disposed between a particular pair 22 of metallic lamellae 20 n is generally compressed against the circumferential surfaces 21 A, 21B which converge outside and inside when a torque T is applied to the laminated component. 10 in the first angular direction Di. Thus, at least a substantial part of the rear portion of each elastomeric strip 18 n , extending from the second end 18 b and towards the first end 18a, is generally in a state of compression as opposed to a state of tension when 'a torsional load goes mainly in the first direction Di under expected normal operating conditions.
    With either bearing component construction, the laminated body 12 formed of wedge-shaped metal strips / shims 20 n results in a substantial increase in the service life of the bearing component 10, and thus also the bearing assembly 11, in comparison with previously known laminated bearings / bearing components. Such an increase is due to the fact that elastomers have greater resistance in a state of compression compared to a state of tension. Consequently, inducing compression (or at least reducing the tensile load) on portions of the elastomeric lamellae 18 n which would otherwise be in a state of tension or undergo a higher tension load results in the duration of increased bearing life.
    Referring now to Figures 3, 8 and 12, as discussed above, the interior connector 14 is configured to connect the interior radial end 12a of the laminate body to the interior member 1 and preferably includes a partially cylindrical body 30 , at least generally rigid, which is preferably formed of a metallic material. The body 30 of the interior connector has a radially interior end 30a which can be connected to the interior element 1 by any suitable means, such as for example by a pin or a mounting shaft 34, as shown in FIG. 8, or a socket. / opening 35 to receive a pin / shaft (Figures 3, 11, 16). In addition, the body 30 of the interior connector has a radially outer end 30b curved with an outer circumferential surface section 36, the innermost elastomeric strip 18 1 being attached to the exterior surface 36 by any suitable means, such as for example by molding, by means of an adhesive, by one or more fixings, etc. However, the internal connector 30 can have any other suitable shape and / or be configured to connect to the internal element 1 or to the laminated body 12 by any other suitable means or other suitable structure.
    In addition, the outer connector member 16 is configured to connect the outer radial end 12b of the laminate body to the outer member 2 and preferably includes a generally arched body 38. As shown in FIGS. 8 and 9, the body 38 of the outer connector preferably has an inner annular portion 40 providing the inner circumferential surface 42 and an outer flange portion 44 extending radially outward from the annular portion 40, providing the outer surface 43 and having a plurality of openings 46 for receiving fasteners (not shown). The outermost lamina of the elastomeric strips 18 n, for example the strip 18 5, as shown, is attached to at least a portion of the inner surface 42 of external connector by any suitable means, such as by molding, adhesive bonding, fasteners , etc. to the connector surface 38, bonded to the connector body 38 by an adhesive, etc. In addition, the inner annular portion 40 may preferably be disposed against an inner circumferential surface 2a defining the bore of the outer member 3 and the flange portion 44 may be disposed against a mounting surface 2b of the outer member 2 and attached to it by a plurality of fasteners (for example bolts), as shown in Figure 9. However, the external connector 16 may have any suitable shape and / or be configured to connect to the external element 2 or to the laminated body 12 by any other suitable means or other suitable structure.
    Referring to Figures 6, 7 and 14 to 16, preferably each of the elastomeric and metallic lamellae 18 n , 20 n of the laminated body 12 is preferably generally partly spherical, that is to say it is generally shaped as a portion of a sphere, and has a center of curvature Ce generally located on the geometric center Cg of the internal connector 14 or proximally with respect thereto. More specifically, the inner surface 19A, 21A of each of the elastomeric and metallic lamellae 18 n , 20 n , respectively, is generally concave and the outer surface 19B, 21B of each of the elastomeric and metallic lamellae 18 n , 20 n is generally convex, as shown. Alternatively, each of the lamellae 18 n , 20 n may have generally straight walls or be either substantially cylindrical circular, as shown in Figure 17, or generally conical, as shown in Figure 18. However, any or all of the lamellae 18 n , 20 n may / may have any other suitable shape or a combination of different shapes, as desired for a particular application of the component 10 of the laminate bearing assembly 11.
    With the preferred spherical lamellae 18 n , 20 n of the laminated body 12, at least a portion of the exterior surface 36 of the interior connector is partially spherical with a center of curvature (not shown) located on the geometric center Cq. The innermost elastomeric strip 18 1 is attached to the outer surface 36 of the inner element so that the centers of curvature Ce of the elastomeric and metallic strips 18 n , 20 n are either generally coincident with the center of curvature outer surface 36 of the connector is generally spaced along the central axis Ac from the latter. That is to say, either the strips 18 n , 20 n are generally symmetrical around the internal connector 16 (FIGS. 6, 7, 14 and 15), or they are asymmetrical with respect to the connector 16 (FIG. 16). Such an asymmetrical structure provides additional spacing on an opposite side for the installation of other components of the mechanical assembly 3 in certain applications and also makes it possible to take into account an axial preload or a static charge in a state of charge " more balanced service.
    Referring to Figures 3 to 5, 8, 12 and 13, the lamellae 18 n , 20 n of the laminated body 12 are preferably arranged so that the circumferential length Le of each of the elastomeric and metal lamellae 18 n , 20 n is greater than the circumferential length Le (FIGS. 5 and 13) of each other strip 18 n , 20 n disposed radially inward of said one strip 18 n or 20 n . In other words, the strips 18 n , 20 n are arranged so that the strips 18 n or 20 n "shorter" in circumference are arranged radially inward of the strips 18 n , 20 n longer in circumference so that the laminate body 12 is generally “triangular”, but may alternatively have any other suitable shape of your choice. In addition, an angle Θ is defined between the two arcuate ends 18a, 18 n b or 20a 20 n b of each of the elastomeric and metallic lamellae 18 n , 20 n , respectively, and the central axis Ac, as shown in FIGS. 3 and 8. With the arrangement described above of the circumferential lengths The variables of the lamellas 18 n , 20 n , the angle Θ of each of the elastomeric and metallic lamellas 18 n , 20 n has a value roughly equal to the value of the angle Θ of each other of the elastomeric and metallic lamellae 18 n , 20 n , that is to say the value of Θ is approximately equal for all the lamellae 18 n , 20 n . Therefore, the whole of the laminated body 12 formed by all the lamellae 18 n , 20 n dimensioned and arranged as described has a body angle a defined between two circumferential sides 12a, 12b and the central axis Ac which has a value roughly equal to the value of the angle Θ of the individual strip 18 n or 20 n .
    Preferably, the value of each lamella angle Θ is between about fifteen degrees (15 °) and about one hundred and eighty degrees (180 °), and therefore the body angle a of the bearing component 10 as well. , but can have any desired value, such as ten degrees (10 °) or even less. The particular value of the angles θ, a generally depends on the expected number of bearing components 10 desired for a particular bearing assembly 11, and each component 10 may have substantially identical or substantially different body angles a in a specific bearing assembly 11 . For example, if it is desired to make a bearing assembly 10 with two bearing components 10, then each bearing component 10 can be formed and dimensioned so that the body angle has reached (and is at least slightly less than) one hundred and eighty degrees (180 °), with an appropriate dimensioning of the connectors 14, 16. In addition, for example, if it is desired to produce the bearing assembly 11 comprising three bearing components 10, each bearing component body 12 can be formed and dimensioned so that the angle Θ reaches (and is at least slightly less than) one hundred and twenty degrees (120 °). However, the bearing assembly 11 may be formed of any desired number of bearing components 10 formed by having any desired body angle, such as the two bearing components 10 with body angles a of about 120 ° as shown in FIG. 9. In addition, the bearing assembly 11 can be used either individually or in combination with another bearing assembly 11, as for example with the slats 18 n , 20 n formed as conical elements ( Figure 18) and the two sets 11 positioned "back to back" to allow balancing of the axial load.
    Those skilled in the art will appreciate that modifications can be made to the embodiments described above without departing from its inventive concept in the broad sense. It is therefore to be understood that the present invention is not limited to the particular embodiments disclosed, but that it is intended to cover modifications in the spirit and scope of the present invention as generally defined in the appended claims.
    权利要求:
    Claims (13)
    [1" id="c-fr-0001]
    1. Component (10) of a laminated bearing assembly (11) for movably coupling an internal element (1) with an external element (2), the external element (2) having a bore (3), the bearing component (10) comprising:
    a laminated body (12) which can be arranged in the bore (3) of the external element (2) and which has an internal radial end (12a) which can be connected to the internal element (1) and an external radial end (12b ) can be connected to the external element (2), the body (12) being formed of a plurality of elastomeric (18 n ) and metallic (20 n ) lamellae, generally arcuate, alternately, generally fitted around a central axis (Ac), each of the elastomeric (18 n ) and metallic (20 n ) lamellae having first and second arcuate ends (18a, 18 n b, 20a, 20b) opposite and inner and outer circumferential surfaces (19A, 19B , 21A, 21B) extending in circumference between the first and second arcuate ends (18 n a, 18 n b, 20a, 20b), each metal strip (20 n ) having a radial thickness (îrm) varying in circumference between a first value (vm i) at the first radially widest arcuate end (20a) and a second value (vm2) less than the radially narrowest second arcuate end (20 n b).
    [2" id="c-fr-0002]
    2. The laminated bearing component according to claim 1, further comprising:
    an interior connector (14) configured to connect the interior radial end (12a) of the laminate body (12) to the interior member (1) and having an exterior circumferential surface (36), an innermost lamella (18 1 ) elastomeric strips (18 n ) being attached to the exterior surface (42) of the interior connector (14); and an external connector (16) configured to connect the external radial end (12b) of the laminated body (12) to the external element (2) and having an internal circumferential surface (42), a strip (18 2 * * 5 ) the outermost of the elastomeric lamellae (18 n ) being attached to the interior surface (42) of the exterior connector (16).
    [3" id="c-fr-0003]
    3. Laminated bearing component according to any one of the preceding claims, in which each elastomeric strip (18 n ) has a substantially constant radial thickness (is) between the first and second arcuate ends (18a, 18b).
    [4" id="c-fr-0004]
    4. The laminated bearing component according to claim 3, in which the laminated body (12) has a first circumferential side (12c) with a first radial length (Lri) and a second circumferential side (12d) opposite with a second radial length ( Lr2), each first arcuate end (20a) of the metal lamellae (20 n ) being located at least generally proximal to the first radial side (12c) of the body (12) and each second arcuate end (20 n b) of the metal lamellae (20 n ) being located at least generally proximal to the second radial side of the body (12) so that the first radial length (Lri) is substantially greater than the second radial length (Lr2).
    [5" id="c-fr-0005]
    5. Laminated bearing component according to claims 2 to 4, wherein the outer surface (36) of the inner connector (14) has a radius (Rie) generally constant around the central axis (Ac) and the inner surface (42 ) of the external connector (16) has a radius (Roc) around the central axis (Ac) varying between a first value (n) proximal to the first circumferential side (12c) of the laminated body (12) and a second lower value ( n) proximal to the second circumferential side (12d) of the laminated body (12) so that a spacing distance (Ds) between the internal connector (14) and the external connector (16) has a first value (dsi) on the first circumferential side (12c) of the laminated body (12) and a second value (ds2) lower than the second circumferential end (12d) of the laminated body.
    [6" id="c-fr-0006]
    6. A laminated bearing component according to claim 1 or 2, in which each elastomeric strip (18 n ) has a radial thickness (is) varying in circumference between a first value (vei) at the first radially most curved first end (18a) wide and a second value smaller (ve2) at the radially narrowest second arcuate end (18b), the elastomeric (18 n ) and metallic (20 n ) lamellae being arranged so that the radially most end (18b) each of at least a portion of the elastomeric lamellae (18 n ) is narrow and is generally disposed between the radially widest ends (20 n b) of two adjacent metal lamellae (20 n ).
    [7" id="c-fr-0007]
    7. A laminated bearing component according to claim 6, in which at least a portion of the metal strips (20 n ) is arranged in pairs (22) of adjacent internal and external metal strips, the external surface (21 B) of the metal strip inner (20 n ) and the inner surface (21 A) of the outer metal strip (20 n ) generally converging radially in a first angular direction (Di) around the central axis (Ac) so that each elastomeric strip (18 n ) arranged between a particular pair (22) of metal lamellae (20 n ) is generally compressed against the circumferential outer (21 A) and inner (21B) converging surfaces when a torque (T) is applied to the laminated component (10 ) in the first angular direction (Di).
    [8" id="c-fr-0008]
    8. A laminated bearing component according to claim 2, in which:
    each of the elastomeric (18 n ) and metallic (20 n ) lamellae is partially spherical and has a center of curvature (Ce), the center of curvature of each of the elastomeric (18 n ) and metallic (20 n ) lamellae being at least generally coincide with the center of curvature of each other of the elastomeric (18 n ) and metallic (20 n ) lamellae; and the interior connector (14) has a partially spherical exterior surface (36) with a center of curvature, the innermost elastomeric strip (18 1 ) being attached to the exterior surface (36) of the interior element (14).
    [9" id="c-fr-0009]
    9. A laminated bearing component according to claim 8, in which the center of curvature of the external surface (36) of the internal connector (14) is generally coincident with the centers of curvature (Ce) of the elastomeric (18 n ) and metallic lamellae. (20 n ).
    [10" id="c-fr-0010]
    10. The laminate bearing component according to claim 8, wherein the center of curvature of the outer surface (36) of the inner connector (14) is axially spaced along the central axis (Ce) therefrom.
    [11" id="c-fr-0011]
    11. A laminated bearing component according to any one of the preceding claims, in which each of the elastomeric (18 n ) and metallic (20 n ) lamellae has a circumferential length (Le) extending between the first and second arcuate ends (18a , 18 n b, 20a, 20b), the slats (18 n , 20 n ) being arranged so that the circumferential length (Le) of each of the slats (18 n ) and of metal (20 n ) is greater than the length circumferential (Le) of each other lamella (18 n , 20 n ) disposed radially inward of said one lamella (18 n , 20 n ).
    [12" id="c-fr-0012]
    12. A laminated bearing component according to claim 11, in which an angle (Θ) is defined between the two arcuate ends (18 n a, 18 n b, 20 n a, 20b) of each of the elastomeric lamellae (18 n ) and metallic (20 n ) and the central axis (Ac), the angle (Θ) of each of the elastomeric (18 n ) and metallic (20 n ) lamellae having a value approximately equal to the value of the angle of each other of the elastomeric and metallic lamellae.
    [13" id="c-fr-0013]
    13. A laminate bearing assembly (11) comprising at least two laminate bearing components (10) according to any one of the preceding claims, and further comprising:
    a central interior element (1) having a central axis (Ac); and an outer member (2) having a bore (3);
    in which said at least two laminated bearing components (10) are arranged at least partially in the bore (3) of the external element (2) and spaced around the central axis (Ac), each of the two components ( 10) laminate bearings having an inner radial end (12a) connected to the inner member (1) and an outer radial end (12b) connected to the outer member (2).
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    同族专利:
    公开号 | 公开日
    CN109322914B|2021-07-27|
    FR3069592B1|2020-12-25|
    US10233992B2|2019-03-19|
    DE102018211458A1|2019-01-31|
    CN109322914A|2019-02-12|
    US20190032741A1|2019-01-31|
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    法律状态:
    2019-07-29| PLFP| Fee payment|Year of fee payment: 2 |
    2020-05-29| PLSC| Search report ready|Effective date: 20200529 |
    2020-07-28| PLFP| Fee payment|Year of fee payment: 3 |
    2021-07-26| PLFP| Fee payment|Year of fee payment: 4 |
    优先权:
    申请号 | 申请日 | 专利标题
    US15/664,540|US10233992B2|2017-07-31|2017-07-31|Elastomeric bearing component with wedge-shaped shims|
    US15664540|2017-07-31|
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