JP2008138719A - Double-row rolling bearing - Google Patents

Double-row rolling bearing Download PDF

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JP2008138719A
JP2008138719A JP2006323529A JP2006323529A JP2008138719A JP 2008138719 A JP2008138719 A JP 2008138719A JP 2006323529 A JP2006323529 A JP 2006323529A JP 2006323529 A JP2006323529 A JP 2006323529A JP 2008138719 A JP2008138719 A JP 2008138719A
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annular
ring
retaining ring
rolling bearing
row rolling
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Masahiro Terawaki
雅弘 寺脇
Masao Takimoto
将生 滝本
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JTEKT Corp
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JTEKT Corp
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30Parts of ball or roller bearings
    • F16C33/58Raceways; Race rings
    • F16C33/60Raceways; Race rings divided or split, e.g. comprising two juxtaposed rings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/14Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/18Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
    • F16C19/181Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact
    • F16C19/183Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles
    • F16C19/184Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a double-row rolling bearing in which both first and second inner rings are connected to each other and held by a simple structure. <P>SOLUTION: An inner ring 30 is divided into two parts: the first inner ring 31 and the second inner ring 41. An annular recess 35 and an annular projection 45 fitted to each other are formed in and on the end surfaces of both the first and second inner rings 31, 41 opposed to each other. A first annular groove 36 is formed in the inner peripheral surface of the annular recess 35. A second annular groove 46 aligned with the first annular groove when the annular recess 35 is fitted to the annular projection 45 to a predetermined fitting position. A snapring 50 is interposed between both the first and second annular grooves 36, 46, both the first and second inner rings 31, 41 are connected to each other and held. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

この発明は内輪が第1の内輪と第2の内輪の二つの部品に分割された複列の転がり軸受に関する。   The present invention relates to a double row rolling bearing in which an inner ring is divided into two parts, a first inner ring and a second inner ring.

従来、図11に示すように、内輪130が第1の内輪131と第2の内輪141の二つの部品に分割された複列の転がり軸受(図11では複列のアンギュラ玉軸受)121を、軸とハウジング(例えば車軸とハブホイール、あるいは、ハブ軸とナックル)との間に組み付ける際、第1の内輪131あるいは第2の内輪141が軸方向に位置ずれしたり、外れる場合がある。このため、第1、第2の両内輪131、141の内周面に跨って筒状の保持部材170を嵌込んで第1、第2の両内輪131、141を保持し、組み付け直前に、保持部材170を取り外して複列の転がり軸受121を軸とハウジングとの間に組み付けているのが一般的である。
また、内輪が第1の内輪と第2の内輪の二つの部品に分割された複列の転がり軸受としては、例えば、特許文献1に開示されている。
実開昭55−34055号公報
Conventionally, as shown in FIG. 11, a double row rolling bearing (in FIG. 11, double row angular contact ball bearing) 121 in which the inner ring 130 is divided into two parts, a first inner ring 131 and a second inner ring 141, When assembled between a shaft and a housing (for example, an axle and a hub wheel or a hub shaft and a knuckle), the first inner ring 131 or the second inner ring 141 may be displaced in the axial direction or may come off. For this reason, the cylindrical holding member 170 is fitted over the inner peripheral surfaces of the first and second inner rings 131 and 141 to hold the first and second inner rings 131 and 141. In general, the holding member 170 is removed and the double row rolling bearing 121 is assembled between the shaft and the housing.
A double row rolling bearing in which the inner ring is divided into two parts, a first inner ring and a second inner ring, is disclosed in Patent Document 1, for example.
Japanese Utility Model Publication No. 55-34055

ところで、図11に示す従来の複列の転がり軸受においては、第1、第2の両内輪131、141の内周面に跨って保持部材170を嵌込み、組み付け直前に、保持部材170を取り外さなければならない。
また、取り外した保持部材170は、組み付け作業に支障をきたすことがないように、例えば収納容器等に投入し、その後、廃棄処分したり、再使用しなければならず、厄介であった。
By the way, in the conventional double row rolling bearing shown in FIG. 11, the holding member 170 is fitted over the inner peripheral surfaces of the first and second inner rings 131 and 141, and the holding member 170 is removed immediately before assembly. There must be.
Further, the removed holding member 170 is troublesome because it must be put in, for example, a storage container or the like and then discarded or reused so as not to hinder the assembling work.

この発明の目的は、前記問題点に鑑み、第1、第2の両内輪の内周面に跨って筒状の保持部材を嵌込むことなく、簡単な構造で第1、第2の両内輪を連結保持することができる複列の転がり軸受を提供することである。   In view of the above problems, an object of the present invention is to provide a first structure and a second inner ring with a simple structure without fitting cylindrical holding members across the inner peripheral surfaces of the first and second inner rings. It is to provide a double row rolling bearing that can be connected and held.

前記目的を達成するために、この発明の請求項1に複列の転がり軸受は、内輪が第1の内輪と第2の内輪の二つの部品に分割された複列の転がり軸受であって、
前記第1、第2の両内輪の相対する端面には相互に嵌合する環状凹部と環状凸部とがそれぞれ形成され、
前記環状凹部の内周面には、第1の環状溝が設けられ、
前記環状凸部の外周面には、前記環状凹部と前記環状凸部とが所定の嵌合位置まで嵌合されたときに前記第1の環状溝に合致する第2の環状溝が設けられ、
前記第1、第2の両環状溝に跨って止め輪が介在されることで、前記第1、第2の両内輪が連結保持される構成にしてあることを特徴とする。
In order to achieve the above object, a double row rolling bearing according to claim 1 of the present invention is a double row rolling bearing in which an inner ring is divided into two parts, a first inner ring and a second inner ring,
An annular concave portion and an annular convex portion that are fitted to each other are formed on the opposing end surfaces of the first and second inner rings, respectively.
A first annular groove is provided on the inner peripheral surface of the annular recess,
A second annular groove that matches the first annular groove when the annular concave portion and the annular convex portion are fitted to a predetermined fitting position is provided on the outer peripheral surface of the annular convex portion,
The first and second inner rings are connected and held by interposing a retaining ring across the first and second annular grooves.

前記構成によると、第1、第2の両内輪の相対する端面に設けられた環状凹部と環状凸部の第1、第2の両環状溝に跨って止め輪を介在させる簡単な構造によって、第1、第2の両内輪を連結保持することができ、複列の転がり軸受の組付作業の能率向上を図ることができる。   According to the above-described configuration, by a simple structure in which a retaining ring is interposed between the annular recesses provided on the opposing end surfaces of the first and second inner rings and the first and second annular grooves of the annular projections, Both the first and second inner rings can be connected and held, and the efficiency of the assembly work of the double row rolling bearings can be improved.

請求項2に係る複列の転がり軸受は、請求項1に記載の複列の転がり軸受であって、
止め輪は、弾性的に縮小及び拡開可能にCリング状に形成されて環状凸部の第2の環状溝に嵌込まれ、
環状凹部の先端部内周面には、前記環状凹部と前記環状凸部との嵌合動作によって前記止め輪を弾性的に縮小させることで前記環状凹部と前記環状凸部との嵌合を許容する傾斜状の案内面が形成されていることを特徴とする。
A double row rolling bearing according to claim 2 is the double row rolling bearing according to claim 1,
The retaining ring is formed in a C-ring shape that can be elastically reduced and expanded, and is fitted into the second annular groove of the annular convex portion,
On the inner circumferential surface of the tip of the annular recess, the snap ring is elastically reduced by the fitting operation of the annular recess and the annular projection, thereby allowing the annular recess and the annular projection to be fitted. An inclined guide surface is formed.

前記構成によると、第1、第2の両内輪を止め輪によって連結する場合には、先ず、環状凸部の第2の環状溝にCリング状の止め輪を弾性的に嵌込んだ後、環状凹部と環状凸部とを所定の嵌合位置まで嵌合することによって、第1、第2の両内輪を容易にかつ確実に連結保持することができる。
すなわち、環状凹部と環状凸部とを嵌込み動作すると、環状凹部の先端部内周面の傾斜状の案内面によって止め輪が一旦弾性的に縮小される。引き続いて、環状凹部と環状凸部とが所定の嵌合位置まで嵌込まれることで、第1、第2の環状溝が合致する。すると、止め輪が弾性復元によって拡開し、その外周部が第1の環状溝内に突入して係合する。これによって、第1、第2の両環状溝に跨って止め輪が介在され、第1、第2の両内輪が連結保持される。
According to the above configuration, when the first and second inner rings are connected by the retaining ring, first, after the C-ring retaining ring is elastically fitted into the second annular groove of the annular convex portion, By fitting the annular concave portion and the annular convex portion to a predetermined fitting position, both the first and second inner rings can be easily and reliably connected and held.
That is, when the annular concave portion and the annular convex portion are fitted, the retaining ring is once elastically reduced by the inclined guide surface on the inner peripheral surface of the tip portion of the annular concave portion. Subsequently, the first and second annular grooves are matched by fitting the annular concave portion and the annular convex portion to a predetermined fitting position. Then, the retaining ring expands due to elastic restoration, and the outer peripheral portion enters into the first annular groove and engages. Accordingly, the retaining ring is interposed between the first and second annular grooves, and the first and second inner rings are connected and held.

請求項3に係る複列の転がり軸受は、請求項2に記載の複列の転がり軸受であって、
環状凹部の第1の環状溝の溝壁面には、前記環状凹部と環状凸部とが所定の嵌合位置まで嵌合され、かつ止め輪が弾性的に拡開されて前記止め輪の外周部が前記第1の環状溝内に突入されたときに、前記止め輪の弾性力に基づいて第1の内輪の端面を第2の内輪の端面に押し付ける傾斜状の押圧面が形成されていることを特徴とする。
A double row rolling bearing according to claim 3 is the double row rolling bearing according to claim 2,
On the groove wall surface of the first annular groove of the annular recess, the annular recess and the annular convex portion are fitted to a predetermined fitting position, and the retaining ring is elastically expanded so that the outer peripheral portion of the retaining ring An inclined pressing surface is formed that presses the end surface of the first inner ring against the end surface of the second inner ring based on the elastic force of the retaining ring when is inserted into the first annular groove. It is characterized by.

前記構成によると、環状凹部と環状凸部とが所定の嵌合位置まで嵌込まれた状態において、止め輪が弾性復元によって拡開しその外周部が第1の環状溝内に突入する際、止め輪の外周縁が第1の環状溝の押圧面に接して滑走する。これによって、止め輪の弾性力に基づいて第1の内輪の端面が第2の内輪の端面に押し付けられる。この結果、第1、第2の両内輪の相対する端面を隙間なく連結保持することができる。   According to the above configuration, when the annular recess and the annular protrusion are fitted to a predetermined fitting position, the retaining ring is expanded by elastic restoration, and the outer peripheral portion enters the first annular groove. The outer peripheral edge of the retaining ring slides in contact with the pressing surface of the first annular groove. Accordingly, the end surface of the first inner ring is pressed against the end surface of the second inner ring based on the elastic force of the retaining ring. As a result, the opposing end surfaces of the first and second inner rings can be connected and held without a gap.

次に、この発明を実施するための最良の形態を実施例にしたがって説明する。   Next, the best mode for carrying out the present invention will be described with reference to examples.

(実施例1)
この発明の実施例1を図1〜図4にしたがって説明する。
図1はこの発明の実施例1に係る複列の転がり軸受としての複列のアンギュラ玉軸受を示す断面図である。図2は複列のアンギュラ玉軸受を拡大して示す断面図である。図3は第1の内輪と第2の内輪とを連結する前で環状凹部の傾斜面が止め輪の外周縁に当接した状態を示す説明図である。図4は環状凹部の傾斜面が止め輪を通過した状態を示す説明図である。
図1に示すように、軸11の軸受け組付部12とハウジング15の嵌込み部16(例えば車軸とハブホイール、あるいは、ハブ軸とナックル)との間に組み付けられる複列の転がり軸受としての複列のアンギュラ玉軸受21は、外輪部材22、内輪30、各複数個の転動体としての玉60、61及び保持器65、66を備えて構成されている。
外輪部材22の内周面には、二つの軌道面23、24が平行状に形成されている。なお、ハブホイールの筒軸状のハブ軸の内周面に二つの軌道面が平行状に形成され、ハブホイールが外輪部材22を一体に構成している場合もある。
(Example 1)
A first embodiment of the present invention will be described with reference to FIGS.
1 is a cross-sectional view showing a double-row angular contact ball bearing as a double-row rolling bearing according to Embodiment 1 of the present invention. FIG. 2 is an enlarged cross-sectional view of a double row angular contact ball bearing. FIG. 3 is an explanatory view showing a state in which the inclined surface of the annular recess is in contact with the outer peripheral edge of the retaining ring before connecting the first inner ring and the second inner ring. FIG. 4 is an explanatory view showing a state in which the inclined surface of the annular recess has passed through the retaining ring.
As shown in FIG. 1, as a double row rolling bearing assembled between a bearing assembly portion 12 of a shaft 11 and a fitting portion 16 of a housing 15 (for example, an axle and a hub wheel or a hub shaft and a knuckle). The double-row angular ball bearing 21 includes an outer ring member 22, an inner ring 30, balls 60 and 61 as a plurality of rolling elements, and cages 65 and 66.
Two raceway surfaces 23 and 24 are formed in parallel on the inner peripheral surface of the outer ring member 22. In some cases, two raceway surfaces are formed in parallel on the inner circumferential surface of the hub shaft of the hub shaft, and the hub wheel integrally forms the outer ring member 22.

図1と図2に示すように、内輪30は、第1の内輪31と第2の内輪41の二つの部品に分割されている。
第1の内輪31の外周面には、外輪部材22の一方の軌道面23に対応する軌道面33が形成され、第1の内輪31に隣接して配置される第2の内輪41の外周面には外輪部材22の他方の軌道面24に対応する軌道面43が形成されている。
そして、外輪部材22の一方の軌道面23と第1の内輪31の軌道面33の間には、複数個の玉60と、これら複数個の玉60を所定間隔を保って転動可能に保持する保持器65が配設されている。また、外輪部材22の他方の軌道面24と第2の内輪41の軌道面43との間には、複数個の玉61と、これら複数個の玉61を所定間隔を保って転動可能に保持する保持器66が配設されている。
As shown in FIGS. 1 and 2, the inner ring 30 is divided into two parts, a first inner ring 31 and a second inner ring 41.
A raceway surface 33 corresponding to one raceway surface 23 of the outer ring member 22 is formed on the outer circumference surface of the first inner ring 31, and the outer circumference surface of the second inner ring 41 disposed adjacent to the first inner ring 31. A raceway surface 43 corresponding to the other raceway surface 24 of the outer ring member 22 is formed.
Between the raceway surface 23 of the outer ring member 22 and the raceway surface 33 of the first inner ring 31, a plurality of balls 60 and the plurality of balls 60 are held so as to be rollable at a predetermined interval. A retainer 65 is disposed. Also, between the other raceway surface 24 of the outer ring member 22 and the raceway surface 43 of the second inner ring 41, a plurality of balls 61 and the plurality of balls 61 can be rolled at a predetermined interval. A holder 66 for holding is provided.

図2に示すように、第1、第2の両内輪31、41の相対する端面のうち、第1の内輪31の端面には、環状凹部35が所定の深さをもって形成され、この環状凹部35の内周面の軸方向中央部には、第1の環状溝36が設けられている。
一方、第2の内輪41の端面には、環状凹部35の内径寸法よりも適宜に小さい外径寸法を有しかつ環状凹部35の深さ寸法よりも適宜に小さい突出寸法をもって環状凹部35に嵌合される環状凸部45が形成されている。
環状凸部45の外周面には、第1、第2の両内輪31、41の相対する端面同士が当接する所定の嵌合位置まで環状凹部35と環状凸部45とが嵌合されたときに第1の環状溝36に合致(整合)する第2の環状溝46が設けられている。
そして、第1、第2の両環状溝36、46に跨って止め輪50が介在されることで、第1、第2の両内輪31、41が連結保持されるようになっている。
As shown in FIG. 2, an annular recess 35 is formed with a predetermined depth on the end surface of the first inner ring 31 among the opposing end surfaces of the first and second inner rings 31, 41. A first annular groove 36 is provided in the axially central portion of the inner peripheral surface of 35.
On the other hand, the end surface of the second inner ring 41 is fitted in the annular recess 35 with an outer diameter dimension that is appropriately smaller than the inner diameter dimension of the annular recess 35 and a projection dimension that is appropriately smaller than the depth dimension of the annular recess 35. An annular convex portion 45 to be joined is formed.
When the annular concave portion 35 and the annular convex portion 45 are fitted to the outer peripheral surface of the annular convex portion 45 to a predetermined fitting position where the opposing end surfaces of the first and second inner rings 31 and 41 are in contact with each other. A second annular groove 46 is provided to match (align) the first annular groove 36.
The first and second inner rings 31 and 41 are connected and held by interposing the retaining ring 50 across the first and second annular grooves 36 and 46.

図2〜図4に示すように、止め輪50は、弾性的に縮小及び拡開可能にCリング状に形成され、その内径部側が環状凸部45の第2の環状溝46に嵌込まれて係止される。
すなわち、止め輪50は、第1、第2の両環状溝36、46の溝幅寸法よりも若干小さい厚さ寸法を有している。
また、自由状態における止め輪50の内径寸法は、第2の環状溝46の底部の直径寸法よりも適宜に大きく、かつ環状凸部45の外径寸法よりも適宜に小さく設定されている。
さらに、自由状態における止め輪50の外径寸法は、第1の環状溝36の底部の直径寸法よりも適宜に小さく、かつ環状凹部35の内径寸法よりも適宜に大きく設定されている。
As shown in FIGS. 2 to 4, the retaining ring 50 is formed in a C-ring shape so that it can be elastically reduced and expanded, and the inner diameter side thereof is fitted into the second annular groove 46 of the annular convex portion 45. And locked.
That is, the retaining ring 50 has a thickness dimension slightly smaller than the groove width dimension of both the first and second annular grooves 36 and 46.
In addition, the inner diameter dimension of the retaining ring 50 in the free state is set appropriately larger than the diameter dimension of the bottom portion of the second annular groove 46 and appropriately smaller than the outer diameter dimension of the annular convex portion 45.
Further, the outer diameter dimension of the retaining ring 50 in the free state is set appropriately smaller than the diameter dimension of the bottom of the first annular groove 36 and appropriately larger than the inner diameter dimension of the annular recess 35.

また、この実施例1において、図3に示すように、環状凹部35の先端部内周面には、傾斜状の案内面38が形成され、環状凹部35と環状凸部45との嵌合動作によって案内面38が止め輪50の外周縁に接して滑走することで止め輪50を弾性的に縮小させる、これによって環状凹部35と環状凸部45との嵌合を許容するようになっている。   In the first embodiment, as shown in FIG. 3, an inclined guide surface 38 is formed on the inner peripheral surface of the tip of the annular recess 35, and the fitting operation between the annular recess 35 and the annular projection 45 is performed. The guide surface 38 slides in contact with the outer peripheral edge of the retaining ring 50 to elastically reduce the retaining ring 50, thereby allowing the annular recess 35 and the annular projection 45 to be fitted.

この実施例1に係る複列のアンギュラ玉軸受は上述したように構成される。
したがって、図1と図2に示すように、第1、第2の両内輪31、41の相対する端面に設けられた環状凹部35と環状凸部45の第1、第2の両環状溝36、46に跨って止め輪50を介在させる簡単な構造によって、第1、第2の両内輪31、41を連結保持することができる。このため、軸11の軸受け組付部12とハウジング15の嵌込み部16との間に対する複列のアンギュラ玉軸受21の組付作業の能率向上を図ることができる。
The double row angular contact ball bearing according to the first embodiment is configured as described above.
Therefore, as shown in FIGS. 1 and 2, both the first and second annular grooves 36 of the annular recess 35 and the annular protrusion 45 provided on the opposing end surfaces of the first and second inner rings 31, 41 are provided. , 46, the first and second inner rings 31, 41 can be connected and held by a simple structure in which the retaining ring 50 is interposed. For this reason, the efficiency improvement of the assembly | attachment operation | work of the double row angular contact ball bearing 21 with respect to between the bearing assembly part 12 of the axis | shaft 11 and the insertion part 16 of the housing 15 can be aimed at.

また、この実施例1において、第1、第2の両内輪31、41を止め輪50によって連結する場合には、先ず、環状凸部45の第2の環状溝46にCリング状の止め輪50を弾性的に嵌込む。
その後、環状凹部35と環状凸部45とを嵌込み動作すると、環状凹部35の先端部内周面の傾斜状の案内面38によって止め輪50が一旦弾性的に縮小される(図3及び図4参照)。引き続いて、第1、第2の両内輪31、41の相対する端面同士が当接する所定の嵌合位置まで環状凹部35と環状凸部45とを嵌合することによって第1、第2の環状溝46が合致する。すると、止め輪50が弾性復元によって拡開し、その外周部が第1の環状溝36内に突入して係合する。
このようにして、環状凹部35と環状凸部45とが所定の嵌合位置まで嵌込まれることで、第1、第2の両環状溝36、46に跨って止め輪50が介在され、これによって、第1、第2の両内輪31、41を容易にかつ確実に連結保持することができる。
In the first embodiment, when the first and second inner rings 31, 41 are connected by the retaining ring 50, first, a C-ring retaining ring is inserted into the second annular groove 46 of the annular protrusion 45. 50 is inserted elastically.
Thereafter, when the annular recess 35 and the annular protrusion 45 are fitted and operated, the retaining ring 50 is temporarily elastically reduced by the inclined guide surface 38 on the inner peripheral surface of the tip of the annular recess 35 (FIGS. 3 and 4). reference). Subsequently, the first and second annular rings 35 and 45 are fitted by fitting the annular concave portion 35 and the annular convex portion 45 to a predetermined fitting position where the opposing end faces of the first and second inner rings 31 and 41 are in contact with each other. The groove 46 is matched. Then, the retaining ring 50 expands due to elastic recovery, and the outer peripheral portion thereof enters the first annular groove 36 and engages.
In this way, when the annular recess 35 and the annular protrusion 45 are fitted to the predetermined fitting position, the retaining ring 50 is interposed across both the first and second annular grooves 36, 46. Thus, the first and second inner rings 31 and 41 can be easily and reliably connected and held.

(実施例2)
次に、この発明の実施例2を図5〜図7にしたがって説明する。
図5はこの発明の実施例2に係る複列の転がり軸受としての複列のアンギュラ玉軸受の第1、第2の両内輪の環状凹部の第1の環状溝と環状凸部の第2の環状溝に跨って止め輪が介在された状態を示す説明図である。図6は第1の内輪と第2の内輪とを連結する前で環状凹部の傾斜面が止め輪の外周縁に当接した状態を示す説明図である。図7は環状凹部の傾斜面が止め輪を通過した状態を示す説明図である。
図5〜図7に示すように、この実施例2においては、環状凸部45の第2の環状溝46の底部と止め輪50の内径面との間に弾性伸縮に富むスポンジ材等の弾性体60を配設して、環状凸部45と止め輪50とを略同一中心に保持するように構成したものである。
この実施例2のその他の構成は、実施例1と同様にして構成されるため、同一構成部分に対し同一符号を付記してその説明は省略する。
(Example 2)
Next, a second embodiment of the present invention will be described with reference to FIGS.
FIG. 5 shows a second annular groove and a second annular convex portion of the annular recesses of the first and second inner rings of the double row angular ball bearing as the double row rolling bearing according to Embodiment 2 of the present invention. It is explanatory drawing which shows the state in which the retaining ring was interposed ranging over the annular groove. FIG. 6 is an explanatory view showing a state in which the inclined surface of the annular recess is in contact with the outer peripheral edge of the retaining ring before connecting the first inner ring and the second inner ring. FIG. 7 is an explanatory view showing a state in which the inclined surface of the annular recess has passed the retaining ring.
As shown in FIGS. 5 to 7, in the second embodiment, an elastic material such as a sponge material rich in elastic expansion and contraction is formed between the bottom of the second annular groove 46 of the annular protrusion 45 and the inner diameter surface of the retaining ring 50. The body 60 is arranged so that the annular convex portion 45 and the retaining ring 50 are held at substantially the same center.
Since other configurations of the second embodiment are configured in the same manner as the first embodiment, the same components are denoted by the same reference numerals, and the description thereof is omitted.

したがって、この実施例2においては、環状凹部35と環状凸部45とを嵌込み動作する際に、弾性体60によって環状凸部45の第2の環状溝46内に止め輪50を保持して止め輪50の片寄りを防止することができるため、環状凹部35の傾斜状の案内面38によって止め輪50を円滑に弾性縮小させることができ、第1、第2の両内輪31、41の連結がより一層容易となる。   Therefore, in the second embodiment, the retaining ring 50 is held in the second annular groove 46 of the annular convex portion 45 by the elastic body 60 when the annular concave portion 35 and the annular convex portion 45 are fitted and operated. Since the retaining ring 50 can be prevented from being displaced, the retaining ring 50 can be smoothly elastically reduced by the inclined guide surface 38 of the annular recess 35, and the first and second inner rings 31, 41 can be reduced. Connection becomes even easier.

(実施例3)
次に、この発明の実施例3を図8〜図10にしたがって説明する。
図8はこの発明の実施例3に係る複列の転がり軸受としての複列のアンギュラ玉軸受の第1、第2の両内輪の環状凹部の第1の環状溝と環状凸部の第2の環状溝に跨って止め輪が介在された状態を示す説明図である。図9は第1の内輪と第2の内輪とを連結する前で環状凹部の傾斜面が止め輪の外周縁に当接した状態を示す説明図である。図10は環状凹部の傾斜面が止め輪を通過した状態を示す説明図である。
図8〜図10に示すように、この実施例3においては、環状凹部35の第1の環状溝36の溝壁面に止め輪50の弾性力に基づいて第1の内輪31の端面を第2の内輪41の端面に押し付ける傾斜状の押圧面37が形成されている。
この実施例3のその他の構成は、実施例1と同様にして構成されるため、同一構成部分に対し同一符号を付記してその説明は省略する。
(Example 3)
Next, a third embodiment of the present invention will be described with reference to FIGS.
FIG. 8 shows a first annular groove and a second annular projection of the annular recesses of the first and second inner rings of the double row angular ball bearing as the double row rolling bearing according to Embodiment 3 of the present invention. It is explanatory drawing which shows the state in which the retaining ring was interposed ranging over the annular groove. FIG. 9 is an explanatory view showing a state in which the inclined surface of the annular recess contacts the outer peripheral edge of the retaining ring before the first inner ring and the second inner ring are connected. FIG. 10 is an explanatory view showing a state in which the inclined surface of the annular recess has passed through the retaining ring.
As shown in FIGS. 8 to 10, in the third embodiment, the end surface of the first inner ring 31 is attached to the groove wall surface of the first annular groove 36 of the annular recess 35 based on the elastic force of the retaining ring 50. An inclined pressing surface 37 that is pressed against the end surface of the inner ring 41 is formed.
Since other configurations of the third embodiment are configured in the same manner as the first embodiment, the same components are denoted by the same reference numerals, and the description thereof is omitted.

したがって、この実施例3においては、図8に示すように、環状凹部35と環状凸部45とが所定の嵌合位置まで嵌込まれた状態において、止め輪50が弾性復元によって拡開しその外周部が第1の環状溝36内に突入する際、止め輪50の外周縁が第1の環状溝36の押圧面37に接して滑走する。これによって、止め輪50の弾性力に基づいて第1の内輪31の端面が第2の内輪41の端面に押し付けられる。この結果、第1、第2の両内輪31、41の相対する端面を隙間なく連結保持することができる。   Therefore, in the third embodiment, as shown in FIG. 8, in the state where the annular recess 35 and the annular projection 45 are fitted to the predetermined fitting position, the retaining ring 50 is expanded by elastic restoration. When the outer peripheral portion enters into the first annular groove 36, the outer peripheral edge of the retaining ring 50 slides in contact with the pressing surface 37 of the first annular groove 36. Thus, the end surface of the first inner ring 31 is pressed against the end surface of the second inner ring 41 based on the elastic force of the retaining ring 50. As a result, the opposing end surfaces of the first and second inner rings 31, 41 can be connected and held without any gap.

なお、この発明は前記実施例1〜3に限定するものではない。
例えば、前記実施例1〜3においては、複列の転がり軸受が複列のアンギュラ玉軸受20である場合を例示したが、複列の円すいころ軸受であっもこの発明を実施することができる。
In addition, this invention is not limited to the said Examples 1-3.
For example, in the first to third embodiments, the case where the double row rolling bearing is the double row angular ball bearing 20 is illustrated, but the present invention can be implemented even with a double row tapered roller bearing.

この発明の実施例1に係る複列の転がり軸受としての複列のアンギュラ玉軸受を示す断面図である。It is sectional drawing which shows the double row angular contact ball bearing as a double row rolling bearing which concerns on Example 1 of this invention. 同じく複列のアンギュラ玉軸受を拡大して示す断面図である。It is sectional drawing which expands and similarly shows a double row angular contact ball bearing. 同じく第1の内輪と第2の内輪とを連結する前で環状凹部の傾斜面が止め輪の外周縁に当接した状態を示す説明図である。Similarly, it is explanatory drawing which shows the state which the inclined surface of the annular recessed part contact | abutted to the outer periphery of the retaining ring before connecting a 1st inner ring and a 2nd inner ring. 同じく環状凹部の傾斜面が止め輪を通過した状態を示す説明図である。It is explanatory drawing which shows the state which the inclined surface of the annular recessed part similarly passed the retaining ring. この発明の実施例2に係る複列の転がり軸受としての複列のアンギュラ玉軸受の第1、第2の両内輪の環状凹部の第1の環状溝と環状凸部の第2の環状溝に跨って止め輪が介在された状態を示す説明図である。The first annular groove of the annular recess and the second annular groove of the annular projection of the first and second inner rings of the double row angular ball bearing as the double row rolling bearing according to the second embodiment of the present invention. It is explanatory drawing which shows the state in which the retaining ring was interposed ranging. 同じく第1の内輪と第2の内輪とを連結する前で環状凹部の傾斜面が止め輪の外周縁に当接した状態を示す説明図である。Similarly, it is explanatory drawing which shows the state which the inclined surface of the annular recessed part contact | abutted to the outer periphery of the retaining ring before connecting a 1st inner ring and a 2nd inner ring. 同じく環状凹部の傾斜面が止め輪を通過した状態を示す説明図である。It is explanatory drawing which shows the state which the inclined surface of the annular recessed part similarly passed the retaining ring. この発明の実施例3に係る複列の転がり軸受としての複列のアンギュラ玉軸受の第1、第2の両内輪の環状凹部の第1の環状溝と環状凸部の第2の環状溝に跨って止め輪が介在された状態を示す説明図である。The first annular groove of the annular recess and the second annular groove of the annular protrusion of the first and second inner rings of the double row angular ball bearing as the double row rolling bearing according to the third embodiment of the present invention. It is explanatory drawing which shows the state in which the retaining ring was interposed ranging. 同じく第1の内輪と第2の内輪とを連結する前で環状凹部の傾斜面が止め輪の外周縁に当接した状態を示す説明図である。Similarly, it is explanatory drawing which shows the state which the inclined surface of the annular recessed part contact | abutted to the outer periphery of the retaining ring before connecting a 1st inner ring and a 2nd inner ring. 同じく環状凹部の傾斜面が止め輪を通過した状態を示す説明図である。It is explanatory drawing which shows the state which the inclined surface of the annular recessed part similarly passed the retaining ring. 従来の複列の転がり軸受の第1、第2の両内輪が保持部材によって連結された状態を示す断面図である。It is sectional drawing which shows the state with which the 1st and 2nd inner ring | wheel of the conventional double row rolling bearing was connected by the holding member.

符号の説明Explanation of symbols

21 複列のアンギュラ玉軸受(複列の転がり軸受)
30 内輪
31 第1の内輪
33 軌道面
35 環状凹部
36 第1の環状溝
37 押圧面
38 案内面
41 第2の内輪
43 軌道面
45 環状凸部
46 第2の環状溝
50 止め輪
21 Double row angular contact ball bearings (double row rolling bearings)
30 inner ring 31 first inner ring 33 raceway surface 35 annular recess 36 first annular groove 37 pressing surface 38 guide surface 41 second inner ring 43 raceway 45 annular convex portion 46 second annular groove 50 retaining ring

Claims (3)

内輪が第1の内輪と第2の内輪の二つの部品に分割された複列の転がり軸受であって、
前記第1、第2の両内輪の相対する端面には相互に嵌合する環状凹部と環状凸部とがそれぞれ形成され、
前記環状凹部の内周面には、第1の環状溝が設けられ、
前記環状凸部の外周面には、前記環状凹部と前記環状凸部とが所定の嵌合位置まで嵌合されたときに前記第1の環状溝に合致する第2の環状溝が設けられ、
前記第1、第2の両環状溝に跨って止め輪が介在されることで、前記第1、第2の両内輪が連結保持される構成にしてあることを特徴とする複列の転がり軸受。
A double row rolling bearing in which the inner ring is divided into two parts, a first inner ring and a second inner ring,
An annular concave portion and an annular convex portion that are fitted to each other are formed on the opposing end surfaces of the first and second inner rings, respectively.
A first annular groove is provided on the inner peripheral surface of the annular recess,
A second annular groove that matches the first annular groove when the annular concave portion and the annular convex portion are fitted to a predetermined fitting position is provided on the outer peripheral surface of the annular convex portion,
A double-row rolling bearing characterized in that the first and second inner rings are connected and held by interposing a retaining ring across the first and second annular grooves. .
請求項1に記載の複列の転がり軸受であって、
止め輪は、弾性的に縮小及び拡開可能にCリング状に形成されて環状凸部の第2の環状溝に嵌込まれ、
環状凹部の先端部内周面には、前記環状凹部と前記環状凸部との嵌合動作によって前記止め輪を弾性的に縮小させることで前記環状凹部と前記環状凸部との嵌合を許容する傾斜状の案内面が形成されていることを特徴とする複列の転がり軸受。
A double row rolling bearing according to claim 1,
The retaining ring is formed in a C-ring shape that can be elastically reduced and expanded, and is fitted into the second annular groove of the annular convex portion,
On the inner circumferential surface of the tip of the annular recess, the snap ring is elastically reduced by the fitting operation of the annular recess and the annular projection, thereby allowing the annular recess and the annular projection to be fitted. A double row rolling bearing characterized in that an inclined guide surface is formed.
請求項2に記載の複列の転がり軸受であって、
環状凹部の第1の環状溝の溝壁面には、前記環状凹部と環状凸部とが所定の嵌合位置まで嵌合され、かつ止め輪が弾性的に拡開されて前記止め輪の外周部が前記第1の環状溝内に突入されたときに、前記止め輪の弾性力に基づいて第1の内輪の端面を第2の内輪の端面に押し付ける傾斜状の押圧面が形成されていることを特徴とする複列の転がり軸受。
A double row rolling bearing according to claim 2,
On the groove wall surface of the first annular groove of the annular recess, the annular recess and the annular convex portion are fitted to a predetermined fitting position, and the retaining ring is elastically expanded so that the outer peripheral portion of the retaining ring An inclined pressing surface is formed that presses the end surface of the first inner ring against the end surface of the second inner ring based on the elastic force of the retaining ring when is inserted into the first annular groove. Double-row rolling bearing characterized by
JP2006323529A 2006-11-30 2006-11-30 Double-row rolling bearing Pending JP2008138719A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018048692A (en) * 2016-09-21 2018-03-29 株式会社Tok Double-row type ball bearing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018048692A (en) * 2016-09-21 2018-03-29 株式会社Tok Double-row type ball bearing
WO2018055991A1 (en) * 2016-09-21 2018-03-29 株式会社Tok Double-row ball bearing

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