JP2009036320A - Bearing unit and method for fixing rolling bearing - Google Patents

Bearing unit and method for fixing rolling bearing Download PDF

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Publication number
JP2009036320A
JP2009036320A JP2007201844A JP2007201844A JP2009036320A JP 2009036320 A JP2009036320 A JP 2009036320A JP 2007201844 A JP2007201844 A JP 2007201844A JP 2007201844 A JP2007201844 A JP 2007201844A JP 2009036320 A JP2009036320 A JP 2009036320A
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rolling bearing
outer ring
housing
peripheral surface
notch
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JP4877136B2 (en
Inventor
Katsuhiro Ikezawa
且弘 池沢
Takaaki Katogi
隆朗 加藤木
Tomoji Sugiman
朋治 杉万
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NSK Ltd
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NSK Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F16C35/067—Fixing them in a housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
    • F16C2226/50—Positive connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
    • F16C2226/50—Positive connections
    • F16C2226/60—Positive connections with threaded parts, e.g. bolt and nut connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2361/00—Apparatus or articles in engineering in general
    • F16C2361/61—Toothed gear systems, e.g. support of pinion shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/583—Details of specific parts of races
    • F16C33/586—Details of specific parts of races outside the space between the races, e.g. end faces or bore of inner ring

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

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact rolling bearing unit having a rolling bearing inserted and fitted into a housing and capable of preventing the occurrence of creep of an outer ring and to provide a method for fixing the rolling bearing. <P>SOLUTION: This rolling bearing unit 1 is provided with the rolling bearing 10 having the outer ring 11, an inner ring 12, and a plurality of balls 13 arranged in the peripheral direction between the outer ring 11 and the inner ring 12 to roll freely and the housing 30 incorporating the rolling bearing 10 inserted and fitted into it. A cut-out section 20 is formed on an outer peripheral face 18 of the outer ring 11 of the rolling bearing 10, and a projecting part 34 matched with the cut-out section 20 of the rolling bearing 10 is formed on a fitting face 33 where the outer peripheral face 18 of the outer ring 11 of the rolling bearing 10 in the housing 30 is fitted. The rolling bearing 10 is inserted and fitted into the housing 30 while the projecting part 34 is engaged with the cut-out section 20. Retaining rings 40, 41 are mounted over both ends of a storage hole 31 and the outer peripheral face 18 of the outer ring 11 of the rolling bearing 10 inserted and fitted into the storage hole 31 while the projecting part 34 is engaged with the cut-out section 20. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、ハウジングに転がり軸受が挿嵌された軸受ユニット、およびハウジングに挿嵌される転がり軸受の固定方法に関する。   The present invention relates to a bearing unit in which a rolling bearing is inserted into a housing, and a method for fixing the rolling bearing to be inserted into the housing.

例えば自動車のトランスミッションに組み込まれる転がり軸受は、トランスミッションのハウジング本体に形成された収容孔に挿嵌され、あるいはトランスミッションのハウジング本体に組み付けられる別体のハウジングに形成された収容孔に挿嵌され、それらのハウジングに取り付けられる。従来、ハウジングに取り付けられた転がり軸受の外輪のクリープを防止する、すなわち、ハウジングの収容孔内で外輪が回転方向に滑ることを防止するようにした転がり軸受が提案されている（例えば、特許文献１参照）。   For example, a rolling bearing incorporated in a transmission of an automobile is inserted into an accommodation hole formed in the housing body of the transmission, or is inserted into an accommodation hole formed in a separate housing assembled to the housing body of the transmission. Attached to the housing. 2. Description of the Related Art Conventionally, there has been proposed a rolling bearing that prevents creep of an outer ring of a rolling bearing attached to a housing, that is, prevents the outer ring from sliding in a rotation direction within a housing accommodation hole (for example, Patent Documents). 1).

図６および図７に示すように特許文献１に開示された転がり軸受１１０は、外輪１１１の軸方向端部の外周面１１２に切り欠き部１１４が形成されている。ハウジング１２０には、転がり軸受１１０が挿嵌される略円形の収容孔１２１が形成され、この収容孔には、外輪１１１の切り欠き部１１４に対応した突起部１２２が形成されている。転がり軸受１１０は、外輪１１１の切り欠き部１１４をハウジング１２０の収容孔１２１の突起部１２２に係合させるように収容孔１２１に挿嵌され、切り欠き部１１４を収容孔１２１の突起部１２２に係合させることにより、収容孔１２１内での外輪１１１の回転を規制されてハウジング１２０に固定される。
実開昭52-152932号公報 As shown in FIGS. 6 and 7, the rolling bearing 110 disclosed in Patent Document 1 has a notch 114 formed on the outer peripheral surface 112 of the axial end portion of the outer ring 111. The housing 120 is formed with a substantially circular accommodation hole 121 into which the rolling bearing 110 is inserted, and a projection 122 corresponding to the notch 114 of the outer ring 111 is formed in this accommodation hole. The rolling bearing 110 is inserted into the receiving hole 121 so that the notch 114 of the outer ring 111 is engaged with the protruding part 122 of the receiving hole 121 of the housing 120, and the notched part 114 is inserted into the protruding part 122 of the receiving hole 121. By engaging, the rotation of the outer ring 111 in the accommodation hole 121 is restricted and fixed to the housing 120.
Japanese Utility Model Publication No. 52-152932

しかしながら、特許文献１では、ハウジング１２０と、このハウジング１２０に取り付けられる蓋１２３とで、外輪１１１の両端面を軸方向に挟むことによって、転がり軸受１１０の軸方向の変位を規制している。この場合、転がり軸受１１０、ハウジング１２０、および蓋１２３を含めた軸受ユニットの軸方向の寸法が大きくなりやすく、小型化に適さない。   However, in Patent Document 1, the axial displacement of the rolling bearing 110 is regulated by sandwiching both end surfaces of the outer ring 111 in the axial direction by the housing 120 and the lid 123 attached to the housing 120. In this case, the axial dimension of the bearing unit including the rolling bearing 110, the housing 120, and the lid 123 tends to be large, and is not suitable for downsizing.

本発明は、上述した事情に鑑みてなされたものであり、その目的は、ハウジングに転がり軸受が挿嵌された転がり軸受ユニットにおいて、外輪のクリープを防止し、小型化を図ることができる軸受ユニットを提供し、また、転がり軸受の固定方法を提供することにある。   The present invention has been made in view of the above-described circumstances, and an object of the present invention is to prevent the outer ring from creeping and reduce the size of the rolling bearing unit in which the rolling bearing is inserted into the housing. And a method for fixing a rolling bearing.

上記の目的は、本発明に係る下記（１）〜（２）の軸受ユニット、および下記（３）の転がり軸受の固定方法より達成される。
（１）外輪、内輪、およびこれら外輪と内輪との間に周方向に転動自在に配設された複数の転動体を有する転がり軸受と、この転がり軸受が挿嵌されたハウジングと、を備えた軸受ユニットであって、前記転がり軸受の外輪外周面に切り欠き部が形成されており、前記転がり軸受が挿嵌される前記ハウジングの収容孔の前記外輪外周面との嵌合面に、前記切り欠き部に整合する突起部が形成されており、前記収容孔の両端と、前記切り欠き部を前記突起部に係合させた状態に前記収容孔に挿嵌された前記転がり軸受の外輪外周面とにまたがって止め輪が装着されていることを特徴とする軸受ユニット。
（２）前記切り欠き部が、前記外輪内周面に形成されて前記転動体に転動される軌道面と径方向に重なることなく前記外輪外周面に形成されていることを特徴とする上記（１）に記載の軸受ユニット。
（３）ハウジングに挿嵌される転がり軸受の固定方法であって、前記転がり軸受の外輪外周面に切り欠き部を形成し、前記転がり軸受が挿嵌される前記ハウジングの収容孔の前記外輪外周面との嵌合面に、前記切り欠き部に整合する突起部を形成し、前記切り欠き部と前記突起部とを係合させるように前記転がり軸受を前記収容孔に挿嵌し、前記収容孔の両端と、前記転がり軸受の外輪外周面とにまたがって止め輪を装着することを特徴とする転がり軸受の固定方法。 The above object is achieved by the following (1) to (2) bearing unit according to the present invention and the following (3) rolling bearing fixing method.
(1) An outer ring, an inner ring, and a rolling bearing having a plurality of rolling elements that are rotatably disposed between the outer ring and the inner ring in a circumferential direction, and a housing in which the rolling bearing is inserted. A notch portion is formed in the outer ring outer peripheral surface of the rolling bearing, and the fitting surface of the housing hole into which the rolling bearing is inserted is fitted with the outer ring outer peripheral surface. Protrusions that are aligned with the notches are formed, and outer circumferences of outer rings of the rolling bearings that are inserted into the accommodation holes in a state where both ends of the accommodation holes are engaged with the notches A bearing unit, wherein a retaining ring is mounted across the surface.
(2) The notch is formed on the outer peripheral surface of the outer ring without overlapping in a radial direction with a raceway surface formed on the inner peripheral surface of the outer ring and rolled by the rolling element. The bearing unit according to (1).
(3) A method for fixing a rolling bearing to be inserted into a housing, wherein a notch is formed in an outer peripheral surface of the outer ring of the rolling bearing, and the outer ring outer periphery of the housing hole of the housing into which the rolling bearing is inserted. A protrusion that is aligned with the notch is formed on a fitting surface with the surface, and the rolling bearing is inserted into the receiving hole so that the notch and the protrusion are engaged with each other. A method for fixing a rolling bearing, characterized in that a retaining ring is mounted across both ends of the hole and the outer ring outer peripheral surface of the rolling bearing.

本発明に係る軸受ユニットおよび転がり軸受の固定方法によれば、転がり軸受の外輪外周面に切り欠き部が形成され、この転がり軸受が挿嵌されるハウジングの収容孔における転がり軸受の外輪外周面との嵌合面に転がり軸受の切り欠き部に整合する突起部が形成され、転がり軸受の切り欠き部とハウジングの突起部とが係合することにより、ハウジングに挿嵌された転がり軸受の外輪のハウジングに対する相対回転が規制される。よって、外輪のクリープを防止することができる。
そして、ハウジングの収容孔の両端と、この収容孔に挿嵌された転がり軸受の外輪の外周面とにまたがって止め輪が装着されており、それにより、転がり軸受の軸方向の変位が規制されている。外輪の両端面を軸方向に挟んで転がり軸受の軸方向の変位を規制する場合に比べて、軸受ユニットの軸方向の寸法を小さくすることができる。
なお、転がり軸受けの切り欠き部は、外輪内周面に形成されて転動体に転動される軌道面と径方向に重なることなく外輪外周面に形成されることが好ましい。かかる構成によれば、比較的高い負荷が作用する軌道面近傍の強度を維持することができる。 According to the bearing unit and the rolling bearing fixing method according to the present invention, a notch is formed in the outer ring outer peripheral surface of the rolling bearing, and the outer ring outer peripheral surface of the rolling bearing in the housing hole into which the rolling bearing is inserted The fitting surface is formed with a protrusion that matches the notch of the rolling bearing, and the notch of the rolling bearing engages with the protrusion of the housing, so that the outer ring of the rolling bearing inserted into the housing is engaged. Relative rotation with respect to the housing is restricted. Therefore, creep of the outer ring can be prevented.
A retaining ring is mounted across both ends of the housing accommodation hole and the outer peripheral surface of the outer ring of the rolling bearing inserted in the accommodation hole, thereby restricting axial displacement of the rolling bearing. ing. Compared with the case where the axial displacement of the rolling bearing is restricted by sandwiching both end faces of the outer ring in the axial direction, the axial dimension of the bearing unit can be reduced.
The notch portion of the rolling bearing is preferably formed on the outer peripheral surface of the outer ring without overlapping in the radial direction with the raceway surface formed on the inner peripheral surface of the outer ring and rolled by the rolling elements. According to such a configuration, the strength in the vicinity of the raceway surface where a relatively high load acts can be maintained.

以下、図を参照して本発明の好適な実施形態を説明する。   Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

図１は本発明の一実施形態である軸受ユニットの正面図、図２は図１に示す軸受ユニットの背面図、図３は図１に示す軸受ユニットの断面図、図４は図１に示す軸受ユニットの転がり軸受けの単体正面図である。また、図５は図１に示す軸受ユニットの変形例に係る転がり軸受の単体正面図である。   1 is a front view of a bearing unit according to an embodiment of the present invention, FIG. 2 is a rear view of the bearing unit shown in FIG. 1, FIG. 3 is a sectional view of the bearing unit shown in FIG. 1, and FIG. It is a single-piece | unit front view of the rolling bearing of a bearing unit. FIG. 5 is a single front view of a rolling bearing according to a modification of the bearing unit shown in FIG.

図１〜図３に示すように、本実施形態の軸受ユニット１は、外輪１１、内輪１２、およびこれら外輪１１と内輪１２との間に周方向に転動自在に配設された複数の転動体である玉１３を有する転がり軸受１０と、この転がり軸受１０が挿嵌されたハウジング３０と、を備えている。   As shown in FIG. 1 to FIG. 3, the bearing unit 1 of the present embodiment includes a plurality of rolling elements that are arranged so as to be rotatable in the circumferential direction between the outer ring 11, the inner ring 12, and the outer ring 11 and the inner ring 12. A rolling bearing 10 having a ball 13 which is a moving body and a housing 30 into which the rolling bearing 10 is inserted are provided.

外輪１１の内周面１４には、外輪軌道面１５が凹設されている。外輪１１と同軸に配置されている内輪１２の外周面１６には、外輪１１の外輪軌道面１５に対向して内輪軌道面１７が凹設されている。複数の玉１３は、外輪１１の外輪軌道面１５と内輪１２の内輪軌道面１７との間で周方向に転動自在に配設されている。   An outer ring raceway surface 15 is recessed in the inner peripheral surface 14 of the outer ring 11. On the outer peripheral surface 16 of the inner ring 12 disposed coaxially with the outer ring 11, an inner ring raceway surface 17 is recessed so as to face the outer ring raceway surface 15 of the outer ring 11. The plurality of balls 13 are arranged so as to roll freely in the circumferential direction between the outer ring raceway surface 15 of the outer ring 11 and the inner ring raceway surface 17 of the inner ring 12.

さらに図４を参照して、外輪１１の外周面１８には、外輪１１の少なくとも一方の端面１９に達する切り欠き部２０が形成されている。この切り欠き部２０は、外輪１１の端面１９の外周縁上の２点Ａ、Ｂで規定される円弧と、これら２点Ａ，Ｂを結ぶ直線、すなわち弦とで囲まれる部分を軸方向に所定の深さで切り欠いて形成されている。   Further, referring to FIG. 4, a cutout portion 20 that reaches at least one end surface 19 of the outer ring 11 is formed on the outer peripheral surface 18 of the outer ring 11. The notch 20 has a portion surrounded by an arc defined by two points A and B on the outer peripheral edge of the end face 19 of the outer ring 11 and a straight line connecting these two points A and B, that is, a portion surrounded by a string in the axial direction. It is formed by cutting out at a predetermined depth.

なお、切り欠き部２０は、外輪１１の一方の端面１９から他方の端面まで達するように、すなわち、外輪１１の軸方向の全長にわたって形成されてもよいが、好ましくは、外輪１１の内周面１４の軸方向中央部に形成された外輪軌道面１５と径方向に重なることがないよう、外輪１１の一方の軸方向端部の外周面に形成される。このように構成すれば、比較的高い負荷が作用する外輪１１の外輪軌道面１５近傍の強度を維持することができる。   The notch 20 may be formed so as to reach from the one end surface 19 of the outer ring 11 to the other end surface, that is, over the entire length of the outer ring 11 in the axial direction, but preferably the inner peripheral surface of the outer ring 11. 14 is formed on the outer peripheral surface of one axial end portion of the outer ring 11 so as not to overlap with the outer ring raceway surface 15 formed in the axial center portion of the outer ring 11 in the radial direction. If comprised in this way, the intensity | strength of the outer ring | wheel raceway surface 15 vicinity of the outer ring | wheel 11 to which a comparatively high load will act can be maintained.

ハウジング３０には、転がり軸受１０が挿嵌される収容孔３１が形成されている。この収容孔３１を形成している円筒壁３２の内周面３３には、すなわち円筒壁３２における転がり軸受１０の外輪１１の外周面１８との嵌合面には、転がり軸受１０の切り欠き部２０に整合する突起部３４が形成されている。   A housing hole 31 into which the rolling bearing 10 is inserted is formed in the housing 30. A notch portion of the rolling bearing 10 is formed on the inner peripheral surface 33 of the cylindrical wall 32 forming the accommodation hole 31, that is, on the fitting surface of the cylindrical wall 32 with the outer peripheral surface 18 of the outer ring 11 of the rolling bearing 10. 20 is formed.

転がり軸受１０は、切り欠き部２０をハウジング３０の突起部３４に係合させるようにハウジング３０の収容孔３１に挿嵌される。転がり軸受１０の切り欠き部２０とハウジング３０の突起部３４とが係合することにより、転がり軸受１０は、収容孔３１内での外輪１１の回転を規制されてハウジング３０に固定される。   The rolling bearing 10 is inserted into the accommodation hole 31 of the housing 30 so that the notch 20 is engaged with the protrusion 34 of the housing 30. When the notch 20 of the rolling bearing 10 and the protrusion 34 of the housing 30 are engaged, the rolling bearing 10 is fixed to the housing 30 by restricting the rotation of the outer ring 11 in the accommodation hole 31.

なお、転がり軸受１０の切り欠き部は、上述した直線状の切り欠き部２０に限られるものではなく、例えば、図５に示すように、外輪１１の端面１９の外周縁上の２点Ａ、Ｂで規定される円弧と、これら２点Ａ、Ｂを結び中心に向けて凸となる円弧とで囲まれる部分を軸方向に所定の深さで切り欠いて、円弧状に形成してもよい。この場合、ハウジング３０に形成される突起部も、円弧状の切り欠き部２０´に整合するように円弧状に形成される。   In addition, the notch part of the rolling bearing 10 is not restricted to the linear notch part 20 mentioned above, For example, as shown in FIG. 5, two points A on the outer periphery of the end surface 19 of the outer ring | wheel 11, A portion surrounded by an arc defined by B and an arc that protrudes toward the center by connecting these two points A and B may be cut out at a predetermined depth in the axial direction to form an arc shape. . In this case, the protrusion formed on the housing 30 is also formed in an arc shape so as to be aligned with the arc-shaped cutout portion 20 ′.

そして、ハウジング３０の収容孔３１内での転がり軸受１０の軸方向の変位を規制するため、外輪１１の外周面１８の両端部に周溝２１、２２を形成し、これら周溝２１、２２にそれぞれ対向する溝状もしは段状の取付部３５、３６を円筒壁３２の両端に形成し、相対向する周溝２１と取付部３５、および周溝２２と取付部３６にまたがって略Ｃ字状の止め輪４０、４１が装着されている。   Then, in order to restrict the axial displacement of the rolling bearing 10 in the housing hole 31 of the housing 30, circumferential grooves 21 and 22 are formed at both ends of the outer circumferential surface 18 of the outer ring 11, and the circumferential grooves 21 and 22 are formed in the circumferential grooves 21 and 22. Opposing groove-like or step-like attachment portions 35 and 36 are formed at both ends of the cylindrical wall 32, and are substantially C-shaped across the circumferential groove 21 and the attachment portion 35, and the circumferential groove 22 and the attachment portion 36. -Shaped retaining rings 40 and 41 are mounted.

以上説明したように、本実施形態の軸受ユニット１および転がり軸受１０の固定方法によれば、転がり軸受１０の外輪外周面１８に切り欠き部２０が形成され、ハウジング３０における転がり軸受１０の外輪外周面１８との嵌合面３３に転がり軸受１０の切り欠き部２０に整合する突起部３４が形成され、転がり軸受１０の切り欠き部２０とハウジング３０の突起部３４とが係合することにより、ハウジング３０に挿嵌された転がり軸受１０の外輪１１のハウジング３０に対する相対回転が規制される。よって、外輪１１のクリープを防止することができる。   As described above, according to the method of fixing the bearing unit 1 and the rolling bearing 10 of the present embodiment, the notch 20 is formed on the outer ring outer peripheral surface 18 of the rolling bearing 10, and the outer ring outer periphery of the rolling bearing 10 in the housing 30. A protrusion 34 that matches the notch 20 of the rolling bearing 10 is formed on the fitting surface 33 with the surface 18, and the notch 20 of the rolling bearing 10 and the protrusion 34 of the housing 30 are engaged with each other. The relative rotation of the outer ring 11 of the rolling bearing 10 inserted into the housing 30 with respect to the housing 30 is restricted. Therefore, creep of the outer ring 11 can be prevented.

そして、転がり軸受１０が挿嵌されたハウジング３０の収容孔３１の両端と、この収容孔３１に挿嵌された転がり軸受１０の外輪１１の外周面１８とにまたがって止め輪４０、４１が装着されており、それにより、転がり軸受１０の軸方向の変位が規制されている。外輪１１の両端面を軸方向に挟んで転がり軸受１０の軸方向の変位を規制する場合に比べて、軸受ユニット１の軸方向の寸法を小さくすることができる。   Retaining rings 40 and 41 are mounted across both ends of the receiving hole 31 of the housing 30 in which the rolling bearing 10 is inserted and the outer peripheral surface 18 of the outer ring 11 of the rolling bearing 10 inserted in the receiving hole 31. Thus, the axial displacement of the rolling bearing 10 is restricted. Compared with the case where the axial displacement of the rolling bearing 10 is restricted by sandwiching both end faces of the outer ring 11 in the axial direction, the axial dimension of the bearing unit 1 can be reduced.

なお、本発明は、前述した実施形態に限定されるものではなく、適宜、変形、改良、等が可能である。   In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably.

本発明の一実施形態である軸受ユニットの正面図である。It is a front view of the bearing unit which is one Embodiment of this invention. 図１に示す軸受ユニットの背面図である。It is a rear view of the bearing unit shown in FIG. 図１に示す軸受ユニットの断面図である。It is sectional drawing of the bearing unit shown in FIG. 図１に示す軸受ユニットの転がり軸受けの単体正面図である。It is a single-piece | unit front view of the rolling bearing of the bearing unit shown in FIG. 図１に示す軸受ユニットの変形例に係る転がり軸受の単体正面図である。It is a single-piece front view of the rolling bearing which concerns on the modification of the bearing unit shown in FIG. 従来の軸受ユニットの転がり軸受の単体平面図である。It is a single-piece | unit top view of the rolling bearing of the conventional bearing unit. 従来の軸受ユニットのハウジングの単体平面図である。It is a single-piece | unit top view of the housing of the conventional bearing unit.

符号の説明Explanation of symbols

１ 軸受ユニット
１０ 転がり軸受
１１ 外輪
１２ 内輪
１３ 玉（転動体）
１４ 外輪の内周面
１５ 外輪軌道面
１８ 外輪の外周面
２０ 切り欠き部
３０ ハウジング
３１ 収容孔
３３ 収容孔における嵌合面
３４ 突起部
４０ 止め輪
４１ 止め輪 1 Bearing unit 10 Rolling bearing 11 Outer ring 12 Inner ring 13 Ball (rolling element)
DESCRIPTION OF SYMBOLS 14 Inner peripheral surface of outer ring 15 Outer ring raceway surface 18 Outer ring outer peripheral surface 20 Notch 30 Housing 31 Receiving hole 33 Fitting surface in receiving hole 34 Projection 40 Retaining ring 41 Retaining ring

Claims (3)

外輪、内輪、およびこれら外輪と内輪との間に周方向に転動自在に配設された複数の転動体を有する転がり軸受と、この転がり軸受が挿嵌されたハウジングと、を備えた軸受ユニットであって、
前記転がり軸受の外輪外周面に切り欠き部が形成されており、
前記転がり軸受が挿嵌される前記ハウジングの収容孔の前記外輪外周面との嵌合面に、前記切り欠き部に整合する突起部が形成されており、
前記収容孔の両端と、前記切り欠き部を前記突起部に係合させた状態に前記収容孔に挿嵌された前記転がり軸受の外輪外周面とにまたがって止め輪が装着されていることを特徴とする軸受ユニット。 A bearing unit comprising an outer ring, an inner ring, a rolling bearing having a plurality of rolling elements that are rotatably arranged in the circumferential direction between the outer ring and the inner ring, and a housing in which the rolling bearing is inserted. Because
A notch is formed on the outer peripheral surface of the outer ring of the rolling bearing,
On the fitting surface with the outer ring outer peripheral surface of the housing hole of the housing into which the rolling bearing is inserted, a protrusion that matches the notch is formed,
A retaining ring is mounted across both ends of the accommodation hole and the outer ring outer peripheral surface of the rolling bearing inserted into the accommodation hole in a state where the notch is engaged with the projection. Features bearing unit. 前記切り欠き部が、前記外輪内周面に形成されて前記転動体に転動される軌道面と径方向に重なることなく前記外輪外周面に形成されていることを特徴とする請求項１に記載の軸受ユニット。   The notch portion is formed on the outer peripheral surface of the outer ring without overlapping in a radial direction with a raceway surface formed on the inner peripheral surface of the outer ring and rolled by the rolling element. The bearing unit described. ハウジングに挿嵌される転がり軸受の固定方法であって、
前記転がり軸受の外輪外周面に切り欠き部を形成し、
前記転がり軸受が挿嵌される前記ハウジングの収容孔の前記外輪外周面との嵌合面に、前記切り欠き部に整合する突起部を形成し、
前記切り欠き部と前記突起部とを係合させるように前記転がり軸受を前記収容孔に挿嵌し、
前記収容孔の両端と、前記転がり軸受の外輪外周面とにまたがって止め輪を装着することを特徴とする転がり軸受の固定方法。 A method of fixing a rolling bearing inserted into a housing,
Forming a notch on the outer peripheral surface of the outer ring of the rolling bearing;
On the fitting surface with the outer peripheral surface of the outer ring of the housing hole into which the rolling bearing is inserted, a protrusion that matches the notch is formed,
The rolling bearing is inserted into the accommodation hole so as to engage the notch and the protrusion,
A method of fixing a rolling bearing, wherein a retaining ring is mounted across both ends of the receiving hole and the outer ring outer peripheral surface of the rolling bearing.
JP2007201844A 2007-08-02 2007-08-02 Bearing unit and rolling bearing fixing method Expired - Fee Related JP4877136B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016186754A1 (en) * 2015-05-19 2016-11-24 Schaeffler Technologies AG & Co. KG Retention arrangement for a rolling element bearing

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JPS52152932A (en) * 1976-06-16 1977-12-19 Sumitomo Chem Co Ltd Fluorescent brighteners for resin treatment
JPS59136030A (en) * 1983-01-21 1984-08-04 株式会社日立製作所 Frequency converting power supply facility
JP2004263835A (en) * 2003-03-04 2004-09-24 Ntn Corp Bearing device for wheel
JP2005133869A (en) * 2003-10-31 2005-05-26 Nsk Ltd Tapered roller bearing for transmission
JP2007092863A (en) * 2005-09-28 2007-04-12 Jtekt Corp Bearing device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52152932A (en) * 1976-06-16 1977-12-19 Sumitomo Chem Co Ltd Fluorescent brighteners for resin treatment
JPS59136030A (en) * 1983-01-21 1984-08-04 株式会社日立製作所 Frequency converting power supply facility
JP2004263835A (en) * 2003-03-04 2004-09-24 Ntn Corp Bearing device for wheel
JP2005133869A (en) * 2003-10-31 2005-05-26 Nsk Ltd Tapered roller bearing for transmission
JP2007092863A (en) * 2005-09-28 2007-04-12 Jtekt Corp Bearing device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016186754A1 (en) * 2015-05-19 2016-11-24 Schaeffler Technologies AG & Co. KG Retention arrangement for a rolling element bearing
US9810267B2 (en) 2015-05-19 2017-11-07 Schaeffler Technologies AG & Co. KG Retention arrangement for a rolling element bearing

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