JP2008025716A - Double row roller bearing device and spacer for rolling bearing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a double row roller bearing device, a spacer for a rolling bearing device, and the rolling bearing with the spacer, which surely pressurize the rolling bearing in an axial direction, produce the rolling bearing device having desired stiffness, and prevent shaft misalignment of the double row roller bearing device and the rolling bearing device. <P>SOLUTION: The spacer 35 for the rolling bearing device in which an inner ring 15 or an outer ring 7 is pressurized in the axial direction by a fastening member 33, is provided between the fastening member 33 and the inner ring 15, and has an alignment function. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、例えば複写機、印刷機械等の産業機械、工作機械、情報機械の回転支持部に用いられる転がり軸受に関し、特に与圧式の転がり複列ころ軸受装置及び転がり軸受装置用の間座に関する。   BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rolling bearing used, for example, in a rotation support portion of an industrial machine such as a copying machine or a printing machine, a machine tool, or an information machine, and more particularly to a pressurized rolling double row roller bearing device and a spacer for the rolling bearing device. .

複写機、印刷機械等の主軸を支持する転がり軸受装置は、一般に与圧を負荷した複数の組合せ転がり軸受によって軸剛性を高め使用される。与圧の負荷方法としては、事務機器等のハウジング内に装着した転がり軸受の外輪又は内輪に締結部材等により軸方向の荷重を負荷するいわゆる定位置与圧が知られている。例えば、印刷機械に用いられる転がり軸受では、印刷時のインクのずれやムラを極力少なくするためにロールの自由度を完全に拘束する必要がある。そのためロールを支承する転がり軸受には剛性が要求され、定位置与圧を採用し軸受に与圧が付与される。以下、従来の定位置与圧を負荷した転がり軸受の一つである複列円すいころ軸受装置を適用した印刷機について図面を参照しつつ説明する。   A rolling bearing device that supports a main shaft of a copying machine, a printing machine or the like is generally used with a plurality of combined rolling bearings loaded with a pressurized pressure to increase shaft rigidity. As a method for applying a pressurization, a so-called fixed-position pressurization is known in which an axial load is applied to an outer ring or an inner ring of a rolling bearing mounted in a housing of office equipment or the like by a fastening member or the like. For example, in a rolling bearing used in a printing machine, it is necessary to completely constrain the degree of freedom of the roll in order to minimize ink displacement and unevenness during printing. For this reason, the rolling bearing that supports the roll is required to have rigidity, and a fixed pressure is applied to the bearing to apply the pressure. Hereinafter, a printing machine to which a double-row tapered roller bearing device, which is one of conventional rolling bearings loaded with a constant position pressure, is applied will be described with reference to the drawings.

図２は、従来の複列円すいころ軸受装置の縦断面図である。従来の複列円すいころ軸受装置１０１は、複列の外輪軌道１０３、１０５を構成する外輪１０７、１０９と、複列の内輪軌道１１１、１１３を構成する内輪１１５、１１７と、円すい台形ころ１１９、１２１と、保持器１２３、１２５を備える。この複列円すいころ軸受装置１０１は、図中水平方向に延在する回転軸１２７の外周に内輪１１５、１１７が嵌合し、外輪１０７、１０９の外周側でハウジングに固定されている。   FIG. 2 is a longitudinal sectional view of a conventional double row tapered roller bearing device. A conventional double-row tapered roller bearing device 101 includes outer rings 107 and 109 constituting double-row outer ring raceways 103 and 105, inner rings 115 and 117 constituting double-row inner ring raceways 111 and 113, and tapered trapezoidal rollers 119, 121 and cages 123 and 125. In this double row tapered roller bearing device 101, inner rings 115, 117 are fitted on the outer periphery of a rotating shaft 127 extending in the horizontal direction in the figure, and are fixed to the housing on the outer peripheral side of the outer rings 107, 109.

また、外輪１０７と内輪１１５を備える外側軸受と、外輪１０９と内輪１１７を備える内側軸受は、間座１３１を介在し背面同士を軸方向に突き合わせる構成である。そして、回転軸１２７に嵌合するゴム胴１３１に対向する回転軸１２７の端部１２７は、ねじ切りされていて、ナット１３３を螺合させることで、内輪１１５の外側端部１１５ａを締めつける。また、ゴム胴１３１側の内輪１１７は、回転軸１２７の段部１２７ａにより軸方向右方の移動を制限されているので、ナット１３３と段部１２７ａにより内輪１１５，１１７を締め付けることにより、複列ころ軸受装置１０１に与圧を付与し剛性を高めている（例えば、特許文献１参照。）。
特開２００１−１４０８７６（図１〜３等） Further, the outer bearing including the outer ring 107 and the inner ring 115 and the inner bearing including the outer ring 109 and the inner ring 117 are configured such that the back surfaces thereof are abutted in the axial direction with a spacer 131 interposed therebetween. The end portion 127 of the rotating shaft 127 facing the rubber cylinder 131 fitted to the rotating shaft 127 is threaded, and the nut 133 is screwed to tighten the outer end portion 115a of the inner ring 115. Further, since the inner ring 117 on the rubber drum 131 side is restricted in the rightward movement in the axial direction by the stepped portion 127a of the rotating shaft 127, the inner rings 115 and 117 are tightened by the nut 133 and the stepped portion 127a, thereby forming a double row. A pressure is applied to the roller bearing device 101 to increase rigidity (for example, see Patent Document 1).
JP 2001-140876 (FIGS. 1-3, etc.)

しかしながら、このようにナット等の締結部材により与圧を付与する複列ころ軸受装置では、ナット１３３の雌ねじ部１３３ａや回転軸１２７の雄ねじ部１２７ａの端面の鉛直精度の加工誤差や取り付け不良によって、ナット１３３の当接端面１３３ｂが傾く場合がある。ナットが傾くことで、内輪端部１１５ａに対して片当たりが発生する。このような現象が起こると、複列ころ軸受装置に対する与圧が不均一となり所望の剛性を得ることができない恐れがある。   However, in the double-row roller bearing device that applies pressure by a fastening member such as a nut in this way, due to vertical processing errors and poor mounting of the end surfaces of the internal thread portion 133a of the nut 133 and the external thread portion 127a of the rotating shaft 127, The contact end surface 133b of the nut 133 may be inclined. When the nut is tilted, one-sided contact occurs with respect to the inner ring end portion 115a. When such a phenomenon occurs, the pressure applied to the double row roller bearing device is not uniform, and there is a possibility that a desired rigidity cannot be obtained.

さらに、ナット１３３の当接端面１３３ｂが軸線の垂直方向に対して傾斜すると、転がり軸受装置の軸心ずれが生じ、振れ精度を所望の精度を確保することが困難である。
そこで、本発明は、転がり軸受装置への与圧を軸方向に確実に付与でき、所望の剛性を有する転がり軸受装置を達成できる、複列ころ軸受装置及び軸受装置に使用される間座を提供することを目的とする。複列ころ軸受装置や転がり軸受装置の軸心ずれを防止できる複列ころ軸受装置及び転がり軸受用の間座を提供することを目的とする。 Furthermore, if the contact end surface 133b of the nut 133 is inclined with respect to the direction perpendicular to the axis, the center of the rolling bearing device is displaced, and it is difficult to ensure the desired accuracy of runout.
Therefore, the present invention provides a double row roller bearing device and a spacer used in the bearing device that can reliably apply a pressure to the rolling bearing device in the axial direction and can achieve a rolling bearing device having a desired rigidity. The purpose is to do. It is an object of the present invention to provide a double row roller bearing device and a spacer for a rolling bearing capable of preventing the axial misalignment of the double row roller bearing device and the rolling bearing device.

上記課題を解決するための本発明の複列ころ軸受装置の一態様は、内輪軌道面を有する一対の内輪と、前記内輪の半径方向外方に配置され、外輪軌道面を有する外輪と、前記内輪軌道面及び前記外輪軌道面間に画成される環状空間内に相対回転自在に配置される複数の転動体と、前記転動体を転動自在に保持する一対の保持器と、を有し、環状の間座を介して前記外輪又は前記内輪に軸方向の与圧が付与される複列ころ軸受装置であって、前記間座は、自動調心機能を有する。   One aspect of the double row roller bearing device of the present invention for solving the above-mentioned problems is a pair of inner rings having an inner ring raceway surface, an outer ring having an outer ring raceway surface disposed radially outward of the inner ring, A plurality of rolling elements disposed in an annular space defined between an inner ring raceway surface and the outer ring raceway surface so as to be relatively rotatable, and a pair of retainers that hold the rolling elements in a freely rotatable manner. A double row roller bearing device in which axial pressure is applied to the outer ring or the inner ring through an annular spacer, the spacer having a self-aligning function.

さらに、上記課題を解決するための本発明の転がり軸受用の間座の一態様は、転がり軸受装置の内輪又は外輪に対して締結部材により軸方向の与圧が付与される転がり軸受装置用の間座であって、前記間座が前記締結部材と内輪との間に介装され、前記間座は調心機能を有する。   Furthermore, one aspect of the spacer for a rolling bearing according to the present invention for solving the above-described problems is for a rolling bearing device in which axial pressure is applied to the inner ring or outer ring of the rolling bearing device by a fastening member. It is a spacer, The said spacer is interposed between the said fastening member and an inner ring | wheel, and the said spacer has a centering function.

本発明の複列ころ軸受によれば、内輪又は外輪に対して軸方向への与圧を付与する締結部材と、締結部材が押圧力を作用する内輪又は外輪の端面との間に、調心機能を有する間座を介在させる。従って、締結部材や、締結部材が締め付けられる回転軸のねじ切り部の加工誤差等に起因して締結部材と回転軸との螺合部に隙間が生じ、締結部材が傾いた場合でも、調心機能を備える間座により押圧方向の誤差を自動調整することが可能となる。従って、与圧を軸方向に確実に付与することができ、複列ころ軸受装置や転がり軸受装置に所望の剛性をできるとともに、複列ころ軸受装置や転がり軸受装置の軸心ずれを防止できる。   According to the double row roller bearing of the present invention, alignment is performed between the fastening member that applies axial pressure to the inner ring or the outer ring and the end surface of the inner ring or outer ring on which the fastening member acts the pressing force. A functional spacer is interposed. Therefore, even when the fastening member is inclined and the fastening member tilts due to a processing error of the fastening member or the threaded portion of the rotating shaft to which the fastening member is fastened, the alignment function is provided. It is possible to automatically adjust the error in the pressing direction by using the spacer provided with. Therefore, the pressurized pressure can be reliably applied in the axial direction, the desired rigidity can be given to the double row roller bearing device and the rolling bearing device, and the misalignment of the double row roller bearing device and the rolling bearing device can be prevented.

以下、本発明の複列ころ軸受装置及び転がり軸受用間座の実施形態について図面を参照しつつ説明する。各図面中、同一要素は同一符号で示してある。   Hereinafter, embodiments of a double row roller bearing device and a rolling bearing spacer of the present invention will be described with reference to the drawings. In the drawings, the same elements are denoted by the same reference numerals.

図１は、本発明の複列ころ軸受装置の実施形態の縦方向断面図である。なお、本実施例は、オフセット印刷機のゴム胴３１のサポート用軸受として用いた複列円すいころ軸受装置である。複列円すいころ軸受装置１は、外側転がり軸受２と内側転がり軸受４を備える。２つの転がり軸受２、４は、その間に環状の外輪間座４１を介装し、背面同士を突き合わせて配置されている。なお、２つの転がり軸受２，４は、向きが異なるのみで構成は同じであるので、外側転がり軸受２を詳細に説明し、内側転がり軸受４の詳細については割愛する。   FIG. 1 is a longitudinal sectional view of an embodiment of a double row roller bearing device of the present invention. In addition, a present Example is a double row tapered roller bearing apparatus used as a support bearing of the rubber cylinder 31 of an offset printing machine. The double row tapered roller bearing device 1 includes an outer rolling bearing 2 and an inner rolling bearing 4. The two rolling bearings 2, 4 are disposed with an annular outer ring spacer 41 interposed therebetween, with their back surfaces abutting each other. The two rolling bearings 2 and 4 have the same configuration except for the different directions. Therefore, the outer rolling bearing 2 will be described in detail, and the details of the inner rolling bearing 4 will be omitted.

内輪軌道面１１を有する内輪１５と、内輪１５の半径方向外方に配置され、外輪軌道面３を有する外輪７と、内輪軌道面１１及び外輪軌道面３間に画成される環状空間内に相対回転自在に配置される複数の円すい台形ころからなる転動体１９と、転動体１９を転動自在に保持する保持器２３と、を備える。   In an annular space defined between the inner ring raceway surface 11 and the outer ring raceway surface 3, an inner ring 15 having an inner ring raceway surface 11, an outer ring 7 disposed radially outward of the inner ring 15 and having an outer ring raceway surface 3. A rolling element 19 made up of a plurality of conical trapezoidal rollers disposed so as to be relatively rotatable, and a holder 23 that holds the rolling element 19 so as to be able to roll freely.

外側転がり軸受２と同様の構成である内側転がり軸受４は、内輪軌道面１３を有する内輪１７と、外輪軌道面５を有する外輪９と、複数の円すい台形ころからなる転動体２１と、転動体２１を転動自在に保持する保持器２５と、を備える。   The inner rolling bearing 4 having the same configuration as that of the outer rolling bearing 2 includes an inner ring 17 having an inner ring raceway surface 13, an outer ring 9 having an outer ring raceway surface 5, a rolling element 21 composed of a plurality of conical trapezoidal rollers, and a rolling element. And a holder 25 that holds the roll 21 in a rollable manner.

図中水平方向に延在するのは、ゴム胴３１が外周に嵌合した回転軸２７である。内輪１５、１７は、回転軸２７の一端部に嵌合している。他方、印刷機のハウジング２９が外輪７，９の外周に嵌合する。また、回転軸２７は、大径部２７ａと、小径部２７ｂと、ねじ切り部２７ｃとを有する。大径部２７ａは、ゴム胴３１に近い側に設けられている。そして、大径部２７ａは、大径部２７ａの外径より小さい外径を有する小径部２７ｂに、段差部２７ｄを介して連結している。この段差部２７ｄにより、内側軸受４の内輪１７の軸方向右方への移動が規制される。   Extending in the horizontal direction in the figure is a rotating shaft 27 with a rubber cylinder 31 fitted on the outer periphery. The inner rings 15 and 17 are fitted to one end of the rotating shaft 27. On the other hand, the housing 29 of the printing press is fitted to the outer periphery of the outer rings 7 and 9. The rotating shaft 27 has a large diameter portion 27a, a small diameter portion 27b, and a threaded portion 27c. The large diameter portion 27 a is provided on the side close to the rubber cylinder 31. And the large diameter part 27a is connected to the small diameter part 27b which has an outer diameter smaller than the outer diameter of the large diameter part 27a via the level | step-difference part 27d. The stepped portion 27d restricts the movement of the inner bearing 17 to the right in the axial direction of the inner bearing 4.

また、回転軸２７の先端部に設けられたねじ切り部２７ｃには、ナット３３が螺合できるように雄ねじが螺刻されている。よって、ナット３３を締め付けることにより、複列円すいころ軸受装置１の軸方向左方への移動を規制することができる。また、ナット３３と、外側軸受２の内輪１５との間に調心間座３５が介装されている。調心間座３５は、環状の第１間座構成部材３７及び環状の第２間座構成部材３９から構成されている。   A male thread is threaded into the threaded portion 27 c provided at the tip of the rotating shaft 27 so that the nut 33 can be screwed together. Therefore, by tightening the nut 33, the movement of the double-row tapered roller bearing device 1 to the left in the axial direction can be restricted. An alignment spacer 35 is interposed between the nut 33 and the inner ring 15 of the outer bearing 2. The aligning spacer 35 includes an annular first spacer component member 37 and an annular second spacer component member 39.

第１間座構成部材３７は、内輪１５に隣接して配置され、第２間座構成部材３９は、ナット３３に隣接して配置される。第１間座構成部材３７と第２間座構成部材３９とが当接する面すなわち調心面は、自動調心機能を有する湾曲面を呈している。第１間座構成部材３７の調心面３７ａは凹状面であり、調心面３７ａの曲率中心ｘは、軸線Ａ上に位置する。また、第２間座構成部材３９の調心面３９ａは凸状面であり、その曲率半径は調心面３７ａの曲率半径と同一である。すなわち、両調心面３７ａ、３９ａは、相補的な形状である。従って、軸方向断面で示す図中において、調心面３７ａを構成する円弧の中心ｘは、軸線Ａ上であって軸方向左方（軸受の外部）に位置する構成である。   The first spacer constituent member 37 is disposed adjacent to the inner ring 15, and the second spacer constituent member 39 is disposed adjacent to the nut 33. The surface on which the first spacer constituting member 37 and the second spacer constituting member 39 abut, that is, the aligning surface, exhibits a curved surface having an automatic aligning function. The alignment surface 37a of the first spacer constituting member 37 is a concave surface, and the center of curvature x of the alignment surface 37a is located on the axis A. Further, the alignment surface 39a of the second spacer constituting member 39 is a convex surface, and the radius of curvature thereof is the same as the radius of curvature of the alignment surface 37a. That is, both the alignment surfaces 37a and 39a have complementary shapes. Accordingly, in the drawing shown in the axial cross section, the center x of the arc constituting the alignment surface 37a is located on the axis A and on the left side in the axial direction (outside of the bearing).

さらに、第２間座構成部材３９の外径が回転軸２７の大径部２７ａの外径とほぼ同じに寸法付けられている。よって、両内輪１５、１７の軸方向両端にかかる当接領域はほぼ同じとなる。さらに、第１間座構成部材３７の外径は、第２間座構成部材３９の外径より大きく寸法づけられ、第２間座構成部材３９の姿勢が変化しても、第２間座構成部材３９の調心面３９ａが調心面３７ａに確実に当接でき、、間座３５の自動調整機能を確実に確保できる。   Further, the outer diameter of the second spacer constituting member 39 is sized approximately the same as the outer diameter of the large diameter portion 27 a of the rotating shaft 27. Therefore, the contact areas on both axial ends of the inner rings 15 and 17 are substantially the same. Further, the outer diameter of the first spacer constituting member 37 is sized larger than the outer diameter of the second spacer constituting member 39, and even if the posture of the second spacer constituting member 39 is changed, the second spacer constituting member 39 is changed. The aligning surface 39a of the member 39 can reliably contact the aligning surface 37a, and the automatic adjustment function of the spacer 35 can be reliably ensured.

また、ハウジング２９には、軸受内部に潤滑油を供給するための油路４３が設けられている。油路４３は、外輪間座４１の近傍に設けられた径方向の貫通孔４１ａに連通し、複列円すいころ軸受装置１内部に潤滑油を供給する構成となっている。   The housing 29 is provided with an oil passage 43 for supplying lubricating oil into the bearing. The oil passage 43 communicates with a radial through hole 41 a provided in the vicinity of the outer ring spacer 41 and supplies lubricating oil into the double row tapered roller bearing device 1.

上記構成において、ナット３３を軸方向右方に締め付けると、複列円すいころ軸受装置１がナット３３と段差部２７ｄとの間で挟み込まれ回転軸２７に固定される。仮にナットのねじ切り部に加工誤差があり、その端面３３ａが鉛直方向（図中の上下方向）に対して傾いた場合であっても、調心間座３５の自動調心機能が働き、ナットの傾きが矯正され、ナットの軸線が軸線Ａ方向に整合される。すなわち、ナット３３が傾いた場合であっても、ナット３３を締め付けることによる押圧力は、第１間座構成部材３７に対して軸線Ａ方向に作用する。したがって、ナット３３の端面３３ａの鉛直度が十分で無い場合や、ナット３３のねじ部と回転軸２７のねじ部２７ｃに隙間がある場合であって、組立時にナット３３が傾いても、自動調心機能により第１間座構成部材３７の内輪１５に対する異常な片当りを防止でき、内輪端部１５ａへの均一な押圧が可能となる。   In the above configuration, when the nut 33 is tightened to the right in the axial direction, the double row tapered roller bearing device 1 is sandwiched between the nut 33 and the stepped portion 27d and fixed to the rotating shaft 27. Even if there is a machining error in the threaded part of the nut and the end face 33a is inclined with respect to the vertical direction (vertical direction in the figure), the self-aligning function of the aligning spacer 35 works, The inclination is corrected and the axis of the nut is aligned in the direction of the axis A. That is, even when the nut 33 is inclined, the pressing force by tightening the nut 33 acts on the first spacer component member 37 in the axis A direction. Therefore, even if the vertical degree of the end surface 33a of the nut 33 is not sufficient or there is a gap between the screw portion of the nut 33 and the screw portion 27c of the rotary shaft 27, even if the nut 33 is inclined during assembly, the nut 33 is automatically adjusted. Due to the heart function, it is possible to prevent abnormal contact of the first spacer constituting member 37 with respect to the inner ring 15 and to uniformly press the inner ring end portion 15a.

上記構成の印刷機によれば、複列円すいころ軸受装置の剛性が確保できるとともに、ゴム胴３１の芯ずれといったことを抑制することができ、印刷時に生じるインクのずれやムラを排除することができる。   According to the printing machine having the above configuration, the rigidity of the double-row tapered roller bearing device can be ensured, and the misalignment of the rubber cylinder 31 can be suppressed, and the deviation and unevenness of ink occurring during printing can be eliminated. it can.

上記実施形態では、間座は、第１間座構成部材及び第２間座構成部材を備える構成としたが、ナットの端面に第2間座構成部材が有する凸状面を設ける構成、すなわち、ナットと第２間座構成部材を一部品として構成とすることも可能であることは言うまでもない。また、内輪の端面に第１間座構成部材が有する凹状面を設ける構成、すなわち、内輪と第１間座構成部材を一部品として構成とすることも可能であることは言うまでもない。さらに、回転軸の段差部と内輪１７の間に間座を介在させても、本発明の作用効果を奏する。   In the said embodiment, although the spacer was set as the structure provided with the 1st spacer structural member and the 2nd spacer structural member, the structure which provides the convex surface which the 2nd spacer structural member has in the end surface of a nut, ie, It goes without saying that the nut and the second spacer constituting member can be configured as one part. Needless to say, the inner ring and the first spacer constituent member may be configured as a single part, that is, the inner ring and the first spacer constituent member may have a concave surface on the end face of the inner ring. Furthermore, even if a spacer is interposed between the stepped portion of the rotating shaft and the inner ring 17, the effects of the present invention can be obtained.

上記実施形態では、両外輪の間に間座を介装しているが、これに代えて、各外輪を一つに成形した一体型の外輪を用いてもよい。   In the above embodiment, a spacer is interposed between both outer rings, but instead of this, an integrated outer ring in which each outer ring is molded into one may be used.

さらに、上記実施形態では、回転軸の外周にナットを螺合させ、軸受に与圧を付与する構成としたが、この構成の締結部材に限らず径方向に貫通する貫通孔を有する部材を回転軸に嵌め込み、貫通孔を介してねじにより当該部材を回転軸にねじ止めする構成等を適用することが可能である。   Furthermore, in the said embodiment, it was set as the structure which screwed a nut to the outer periphery of a rotating shaft, and gave a pressure to a bearing, However, Not only the fastening member of this structure but the member which has a through-hole penetrated to radial direction It is possible to apply a configuration in which the member is fitted to the shaft and the member is screwed to the rotating shaft with a screw through a through hole.

上記実施形態では、円すいころ軸受装置について説明したが、本発明はこれに限定されることはない。例えば、玉軸受、円錐ころ、円筒ころ軸受、針状ころ軸受といった、外輪と、外輪に対して相対回転可能な内輪とを備える転がり軸受であれば、本発明の間座を適用できる。   In the above embodiment, the tapered roller bearing device has been described, but the present invention is not limited to this. For example, the spacer of the present invention can be applied to any rolling bearing including an outer ring and an inner ring that can rotate relative to the outer ring, such as a ball bearing, a tapered roller, a cylindrical roller bearing, and a needle roller bearing.

この発明は、その本質的特性から逸脱することなく数多くの形式のものとして具体化することができる。よって、上述した実施形態は専ら説明上のものであり、本発明を制限するものではないことは言うまでもない。   The present invention can be embodied in many forms without departing from its essential characteristics. Therefore, it is needless to say that the above-described embodiment is exclusively for description and does not limit the present invention.

本発明に係る円すいころ軸受装置の実施形態の縦方向断面図である。It is a longitudinal direction sectional view of an embodiment of a tapered roller bearing device concerning the present invention. 従来の円すいころ軸受装置の縦方向断面図である。It is a longitudinal direction sectional view of a conventional tapered roller bearing device.

符号の説明Explanation of symbols

１ 転がり軸受け
７、９ 外輪
１５、１７ 内輪
１９、２１ 転動体
２３、２５ 保持器
２７ 回転軸
２９ ハウジング
３３ ナット
３５ 間座
４１ 外輪間座
DESCRIPTION OF SYMBOLS 1 Rolling bearing 7, 9 Outer ring | wheel 15, 17 Inner ring | wheel 19, 21 Rolling body 23, 25 Cage 27 Rotating shaft 29 Housing 33 Nut 35 Spacer 41 Outer ring spacer

Claims (5)

内輪軌道面を有する一対の内輪と、前記内輪の半径方向外方に配置され、外輪軌道面を有する外輪と、前記内輪軌道面及び前記外輪軌道面間に画成される環状空間内に相対回転自在に配置される複数の転動体と、前記転動体を転動自在に保持する一対の保持器と、を有し、環状の間座を介して前記外輪又は前記内輪に軸方向の与圧が付与される複列ころ軸受装置であって、
前記間座は、自動調心機能を有する複列ころ軸受装置。 Relative rotation within an annular space defined between the inner ring raceway surface and the outer ring raceway surface, and a pair of inner rings having an inner raceway surface, an outer ring having an outer ring raceway surface disposed radially outward of the inner ring A plurality of rolling elements arranged freely, and a pair of cages for holding the rolling elements in a freely rolling manner, and axial pressure is applied to the outer ring or the inner ring through an annular spacer. A double-row roller bearing device,
The spacer is a double row roller bearing device having a self-aligning function. 前記間座は、第１環状間座構成部材と、第２環状間座構成部材を備え、前記第１環状間座構成部材は、前記外輪又は内輪に当接する当接面と、軸方向に関して前記当接面に対向する凹状面とを有し、前記第２間座構成部材は、前記凹状面と相補的な形状の、前記凹状面に当接する凸状面を有し、
前記凸状面の曲率中心が軸線上に位置するように第１間座構成部材が配置されている請求項１に記載の複列ころ軸受装置。 The spacer includes a first annular spacer constituent member and a second annular spacer constituent member, and the first annular spacer constituent member has a contact surface that contacts the outer ring or the inner ring, and the axial direction. A concave surface facing the contact surface, and the second spacer component member has a convex surface that contacts the concave surface and has a shape complementary to the concave surface,
The double row roller bearing device according to claim 1, wherein the first spacer constituting member is disposed such that a center of curvature of the convex surface is located on an axis. 前記複列ころ軸受は、転動体が円すい台形のころである請求項１又は２に記載の複列ころ軸受装置。   The double row roller bearing device according to claim 1 or 2, wherein the double row roller bearing is a tapered trapezoidal roller. 転がり軸受装置の内輪又は外輪に対して締結部材により軸方向の与圧が付与される転がり軸受装置用の間座であって、前記間座が前記締結部材と内輪との間に介装され、前記間座は調心機能を有する転がり軸受装置用の間座。、   A rolling bearing device spacer in which axial pressure is applied to the inner ring or outer ring of the rolling bearing device by a fastening member, the spacer being interposed between the fastening member and the inner ring, The spacer is a spacer for a rolling bearing device having a centering function. , 前記間座は、第１環状間座構成部材と、第２環状間座構成部材を備え、前記第１環状間座構成部材は、前記外輪又は内輪に当接する当接面と、軸方向に関して前記当接面に対向する凹状面とを有し、前記第２間座構成部材は、前記凹状面と相補的な形状の、前記凹状面に当接する凸状面を有し、
前記凸状面の曲率中心が軸線上に位置するように第１間座構成部材が配置されている請求項４に記載の転がり軸受装置用の間座。
The spacer includes a first annular spacer constituent member and a second annular spacer constituent member, and the first annular spacer constituent member has a contact surface that contacts the outer ring or the inner ring, and the axial direction. A concave surface facing the contact surface, and the second spacer component member has a convex surface that contacts the concave surface and has a shape complementary to the concave surface,
The spacer for a rolling bearing device according to claim 4, wherein the first spacer constituting member is disposed so that a center of curvature of the convex surface is positioned on an axis.

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