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JP2010019333A - Double row rolling bearing and hub unit for axle support - Google Patents

Double row rolling bearing and hub unit for axle support Download PDF

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Publication number
JP2010019333A
JP2010019333A JP2008180143A JP2008180143A JP2010019333A JP 2010019333 A JP2010019333 A JP 2010019333A JP 2008180143 A JP2008180143 A JP 2008180143A JP 2008180143 A JP2008180143 A JP 2008180143A JP 2010019333 A JP2010019333 A JP 2010019333A
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Japan
Prior art keywords
side portion
peripheral surface
diameter side
ring
inner ring
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JP2008180143A
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Japanese (ja)
Inventor
Shigeaki Furusawa
重明 古澤
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JTEKT Corp
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JTEKT Corp
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Publication of JP2010019333A publication Critical patent/JP2010019333A/en
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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
    • 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
    • F16C19/14—Bearings 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
    • F16C19/18—Bearings 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
    • F16C19/181—Bearings 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
    • F16C19/183—Bearings 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
    • F16C19/184—Bearings 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
    • 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
    • F16C19/14—Bearings 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
    • F16C19/18—Bearings 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
    • F16C19/181—Bearings 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
    • F16C19/183—Bearings 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
    • F16C19/184—Bearings 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
    • F16C19/186—Bearings 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 with three raceways provided integrally on parts other than race rings, e.g. third generation hubs
    • 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
    • F16C19/50—Other types of ball or roller bearings
    • 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
    • F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
    • F16C2240/40—Linear dimensions, e.g. length, radius, thickness, gap
    • F16C2240/70—Diameters; Radii
    • F16C2240/80—Pitch circle diameters [PCD]
    • 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
    • F16C2326/00—Articles relating to transporting
    • F16C2326/01—Parts of vehicles in general
    • F16C2326/02—Wheel hubs or castors
    • 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

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

Abstract

【課題】幅寸法を大きくすることなく高剛性化が図かれ、負荷容量も低下させることがない複列転がり軸受を得ることを目的とする。
【解決手段】断面コの字形の外輪１の凹み部分に断面コの字形の内輪２の外径側部を嵌り込ませると共に内輪２の凹み部分に外輪１の内径側部を嵌り込ませるように組み合わせ、その外輪１の外径側部の内周面の軌道面１２と内輪２の外径側部の外周面の軌道面１４との間に、保持器６に保持された大きいピッチ円直径Ｄ１の列の玉群４を介装させ、外輪１の内径側部の内周面の軌道面１３と内輪２の内径側部の外周面に装着した環状の別体内輪３の外周面の軌道面１５との間に、保持器７に保持され、玉群４のピッチ円直径Ｄ１より小さいピッチ円直径Ｄ２の玉群５を介装させて構成されている。
【選択図】図１An object of the present invention is to obtain a double-row rolling bearing that is highly rigid without increasing the width dimension and that does not reduce the load capacity.
SOLUTION: An outer diameter side portion of an inner ring 2 having a U-shaped cross section is fitted into a recessed portion of an outer ring 1 having a U-shaped cross section, and an inner diameter side portion of an outer ring 1 is fitted into a recessed portion of the inner ring 2. A large pitch circle diameter D1 held by the cage 6 between the inner raceway surface 12 on the outer diameter side of the outer ring 1 and the outer raceway surface 14 on the outer diameter side of the inner ring 2 is combined. The outer circumferential surface of the annular inner ring 3 mounted on the inner circumferential surface of the inner ring 2 and the inner circumferential surface of the inner ring 2 is interposed. 15, the ball group 5 is held by the cage 7 and the ball group 5 having a pitch circle diameter D2 smaller than the pitch circle diameter D1 of the ball group 4 is interposed.
[Selection] Figure 1

Description

本発明は車両用や各種産業機器等に適用する複列転がり軸受装置及び車軸支持用ハブユニットに関する。   The present invention relates to a double-row rolling bearing device and an axle support hub unit that are applied to vehicles and various industrial equipment.

従来のこの種の転がり軸受装置として、外輪と、ハブ軸と内輪と玉群とを有する車軸支持用のハブユニットがある。
外輪は車体（不図示）に固定され、内周面に軸方向二列の軌道面を有すると共に、車両インナ側における外周面に前記車体を固定するためのフランジを有する。
ハブ軸は車両アウタ側外周面に車輪を取り付けるためのフランジを有すると共に、軸方向中間の外周面に車両アウタ側の軌道面を有する。
内輪はハブ軸の車両インナ側の外周面に一体回転可能に嵌合装着され、外周面に車両インナ側の軌道面を有する。玉群は外輪とハブ軸と内輪とのそれぞれの軌道面間において設けられる（例えば、特許文献１参照）。
このような転がり受装置は、負荷容量を増やし、剛性を上げる手段として有効であった。
特開２００４−１０８４４９号公報（第２頁、図１０） As a conventional rolling bearing device of this type, there is a hub unit for supporting an axle having an outer ring, a hub shaft, an inner ring, and a ball group.
The outer ring is fixed to a vehicle body (not shown), has two raceways in the axial direction on the inner peripheral surface, and has a flange for fixing the vehicle body on the outer peripheral surface on the vehicle inner side.
The hub axle has a flange for attaching a wheel to the outer circumferential surface of the vehicle outer side, and has a track surface on the outer side of the vehicle on the outer circumferential surface in the axial direction.
The inner ring is fitted and mounted on the outer peripheral surface of the hub shaft on the vehicle inner side so as to be integrally rotatable, and has a raceway surface on the outer side of the vehicle inner side. The ball group is provided between the raceways of the outer ring, the hub axle, and the inner ring (see, for example, Patent Document 1).
Such a rolling receiving device is effective as means for increasing load capacity and increasing rigidity.
Japanese Patent Laying-Open No. 2004-108449 (second page, FIG. 10)

しかし、上記従来の転がり受装置は、転動体の玉列が複列になるため、幅寸法を大きく設定する必要があり、狭いスペースに組み入れることがなかなか困難であった。
また、狭いスペースに組み入れるために幅寸法を小さくすると軸受の剛性が低下し、転動体の玉径を小さくすると、今度は負荷容量が低下するという問題があった。
本発明はかかる問題を解決するためになされたもので、幅寸法を大きくすることなく高剛性化が図かれ、負荷容量も低下させることがない複列転がり軸受装置及び車軸支持用ハブユニットを得ることを目的とする。 However, in the above conventional rolling receiving device, since the ball rows of the rolling elements are double rows, it is necessary to set a large width dimension, and it is difficult to incorporate it in a narrow space.
Further, if the width dimension is reduced in order to incorporate it in a narrow space, the rigidity of the bearing is lowered, and if the ball diameter of the rolling element is reduced, the load capacity is lowered.
The present invention has been made to solve such a problem, and obtains a double-row rolling bearing device and an axle support hub unit that achieves high rigidity without increasing the width dimension and does not reduce load capacity. For the purpose.

本発明に係る複列転がり軸受は、断面コの字形で、外径側部と内径側部の内周面にそれぞれ軌道面を有する外輪と、断面コの字形で、外径側部の外周面に軌道面を有し、前記外輪の凹み部分に外径側部を嵌り込ませて組み合わされた内輪と、前記内輪の内径側部の外周面に装着された別体内輪と、前記外輪の外径側部の内周面の軌道面と前記内輪の外径側部の外周面の軌道面との間に介装させられた大きいピッチ円直径Ｄ１の列の転動体群と、前記外輪の内径側部の内周面の軌道面と前記内輪の内径側部の外周面に装着された前記別体内輪の外周面の軌道面との間に介装させられ、前記転動体のピッチ円直径Ｄ１より小さいピッチ円直径Ｄ２の列の転動体群とを備えて構成されている。   The double-row rolling bearing according to the present invention has a U-shaped cross section, an outer ring having a raceway surface on the inner peripheral surface of the outer diameter side portion and the inner diameter side portion, and an outer peripheral surface of the outer diameter side portion in a U-shaped cross section. The inner ring combined with an outer diameter side portion fitted into the recessed portion of the outer ring, a separate inner ring attached to the outer peripheral surface of the inner diameter side part of the inner ring, and an outer ring of the outer ring. A rolling element group in a row having a large pitch circle diameter D1 interposed between the raceway surface of the inner peripheral surface of the radial side portion and the raceway surface of the outer peripheral side portion of the inner ring, and the inner diameter of the outer ring A pitch circle diameter D1 of the rolling element is interposed between a raceway surface of the inner peripheral surface of the side portion and a raceway surface of the outer peripheral surface of the inner ring mounted on the inner peripheral side portion of the inner ring. And a rolling element group in a row having a smaller pitch circle diameter D2.

さらに、本発明に係る車軸支持用ハブユニットは、軸方向一方側の外周面に車輪取付フランジを有し、軸方向他方側に外周面に軌道面を有する外径側部及び内径側部を備えたハブホイールと、前記ハブホイールの軸方向他方側の外径側部を包み込むように組み合わされ、外径側部と内径側部の内周面にそれぞれ軌道面を有する外輪と、前記ハブホイールの軸方向他方側の外径側部の外周面の軌道面と前記外輪の外径側部の内周面の軌道面との間に介装させられた大きいピッチ円直径Ｄ１の列の転動体群と、前記ハブホイールの内径側部の外周面に装着された別体内輪の外周面の軌道面と前記外輪の内径側部の内周面の軌道面との間に介装させられ、前記転動体のピッチ円直径Ｄ１より小さいピッチ円直径Ｄ２の列の転動体群とを備えて構成されている。   The hub unit for supporting an axle according to the present invention further includes an outer diameter side portion and an inner diameter side portion having a wheel mounting flange on the outer peripheral surface on one side in the axial direction and a raceway surface on the outer peripheral surface on the other side in the axial direction. A hub wheel, an outer ring having a raceway surface on the inner peripheral surface of each of the outer diameter side portion and the inner diameter side portion. Rolling elements in a row with a large pitch circle diameter D1 interposed between the raceway surface of the outer peripheral side of the outer diameter side portion on the other side in the axial direction and the raceway surface of the inner peripheral surface of the outer diameter side portion of the outer ring. Between the raceway surface of the outer peripheral surface of another inner ring mounted on the outer peripheral surface of the inner diameter side portion of the hub wheel and the raceway surface of the inner peripheral surface of the inner diameter side portion of the outer ring, and A rolling element group in a row with a pitch circle diameter D2 smaller than the pitch circle diameter D1 of the moving body. To have.

本発明の複列転がり軸受は、断面コの字形の外輪の凹み部分に断面コの字形の内輪の外径側部を嵌り込ませると共に内輪の凹み部分に外輪の内径側部を嵌り込ませるように組み合わせ、その外輪の外径側部の内周面の軌道面と内輪の外径側部の外周面との間に、大きいピッチ円直径Ｄ１の列の転動体群を介装させ、外輪の内径側部の内周面の軌道面と内輪の内径側部の外周面に装着した別体内輪の外周面の軌道面との間に、前記転動体群のピッチ延直径Ｄ１より小さいピッチ円直径Ｄ２の転動体群を介装させているので、幅寸法を単列軸受並の寸法に短くできる一方、ピッチ円直径Ｄ１を大きくできるため、転動体群の周方向における介装スペースが増大する分、該転動体群の介装数を増やすことにより、軸受としての剛性を確保することができ、負荷容量が大きな装置に提供することができる。   The double-row rolling bearing of the present invention is configured such that the outer diameter side portion of the inner ring having a U-shaped cross section is fitted into the recessed portion of the outer ring having a U-shaped cross section and the inner diameter side portion of the outer ring is fitted into the recessed portion of the inner ring. In combination, a rolling element group having a large pitch circle diameter D1 is interposed between the raceway surface of the inner peripheral surface of the outer ring on the outer ring side and the outer peripheral surface of the outer ring side of the inner ring. A pitch circle diameter smaller than the pitch extension diameter D1 of the rolling element group between the raceway surface of the inner peripheral surface of the inner diameter side and the raceway surface of the outer peripheral surface of another inner ring attached to the outer peripheral surface of the inner ring side portion of the inner ring. Since the rolling element group of D2 is interposed, the width dimension can be shortened to the same size as that of the single row bearing, while the pitch circle diameter D1 can be increased, so that the interposed space in the circumferential direction of the rolling element group increases. By increasing the number of interposed rolling element groups, it is possible to ensure rigidity as a bearing. Come, it is possible to load capacity is provided to a large apparatus.

本発明の車軸支持用ハブユニットは、ハブホイールの軸方向他方側の外径側部を包み込むように外径側部と内径側部を有する外輪を組み合わせ、ハブホイールの軸方向他方側の外径側部の外周面の軌道面と外輪の外径側部の内周面の軌道面との間に、大きいピッチ円直径Ｄ１の列の転動体群を介装させ、ハブホイールの軸方向他方側の内径側部の外周面に装着された別体内輪の外周面の軌道面と外輪の内径側部の内周面の軌道面との間に、ピッチ円直径Ｄ１より小さいピッチ円直径Ｄ２の転動体群を介装させて構成されているので、幅寸法を単列軸受並の寸法に短くできる一方、ピッチ円直径Ｄ１を大きくできるため、転動体群の周方向における介装スペースが増大する分、該転動体群の介装数を増やすことにより、軸受としての剛性を確保することができ、負荷容量が大きなハブユニットを得ることができる。   The hub unit for supporting an axle of the present invention combines an outer ring having an outer diameter side portion and an inner diameter side portion so as to wrap the outer diameter side portion on the other axial side of the hub wheel, and the outer diameter on the other axial side of the hub wheel. Between the raceway surface of the outer peripheral surface of the side portion and the raceway surface of the inner peripheral surface of the outer diameter side portion of the outer ring, a rolling element group in a row with a large pitch circle diameter D1 is interposed, and the other side in the axial direction of the hub wheel. The pitch circle diameter D2 is smaller than the pitch circle diameter D1 between the raceway surface of the outer peripheral surface of another inner ring mounted on the outer peripheral surface of the inner ring side of the inner ring and the raceway surface of the inner peripheral surface of the inner ring side portion of the outer ring. Since the moving body group is interposed, the width dimension can be shortened to the same size as a single row bearing, while the pitch circle diameter D1 can be increased, so that the interposing space in the circumferential direction of the rolling element group increases. , Ensuring the rigidity as a bearing by increasing the number of interposed rolling element groups Rukoto can can load capacitance obtain a large hub unit.

実施の形態１．
図１は本発明の実施の形態１に係る複列転がり軸受の全体構成を示す断面図、図２は同複列転がり軸受をデフピニオンユニットに使用した状態を示す上半分断面図である。
図１に示す如く、複列転がり軸受１００は、一種のアンギュラ玉軸受であり、炭素鋼又は軸受用鋼で形成された断面コの字形で、外径側部１ａと中間部１ｂと内径側部１ｃとを有する外輪１と、炭素鋼又は軸受用鋼で形成された断面コの字形で、外径側部２ａと中間部２ｂと内径側部２ｃとを有する内輪２と、炭素鋼又は軸受用鋼で形成され、内輪２の内径側部２ｃの外周面に圧入嵌合して装着された環状の別体内輪３と、軸受用鋼で形成されたピッチ円直径が異なる二列の玉群４，５と、二列の玉群４，５を保持する鋼板や樹脂で形成された保持器６，７とを有して構成されている。
断面コの字形の外輪１は、外径側部１ａと内径側部１ｃの内周面にそれぞれ軌道面１２，１３を有する。また、断面コの字形の内輪２は、外径側部２ａの外周面に軌道面１４を有する。
外輪１と内輪２の外径側部と内径側部は円環状の中間部で一方の軸方向端部を連続させ、全体として断面コの字形の軸軌道輪を形成する。
さらに、環状の別体内輪３の軸方向一端側の外周面に軌道面１５を有する。 Embodiment 1 FIG.
FIG. 1 is a cross-sectional view showing an overall configuration of a double row rolling bearing according to Embodiment 1 of the present invention, and FIG. 2 is an upper half cross sectional view showing a state in which the double row rolling bearing is used in a differential pinion unit.
As shown in FIG. 1, the double row rolling bearing 100 is a kind of angular contact ball bearing, which has a U-shaped cross section formed of carbon steel or bearing steel, and has an outer diameter side portion 1 a, an intermediate portion 1 b, and an inner diameter side portion. An outer ring 1 having 1c, a U-shaped cross section formed of carbon steel or bearing steel, an inner ring 2 having an outer diameter side portion 2a, an intermediate portion 2b and an inner diameter side portion 2c, and carbon steel or bearings. An annular separate inner ring 3 formed of steel and press-fitted to the outer peripheral surface of the inner diameter side portion 2c of the inner ring 2 and two rows of ball groups 4 formed of bearing steel and having different pitch circle diameters , 5 and retainers 6, 7 made of a steel plate or resin that holds the two rows of ball groups 4, 5.
The outer ring 1 having a U-shaped cross section has raceway surfaces 12 and 13 on inner peripheral surfaces of an outer diameter side portion 1a and an inner diameter side portion 1c, respectively. The U-shaped inner ring 2 has a raceway surface 14 on the outer peripheral surface of the outer diameter side portion 2a.
The outer ring side and the inner ring side of the outer ring 1 and the inner ring 2 are annular intermediate parts, and one axial end is made continuous to form an axial race ring having a U-shaped cross section as a whole.
Furthermore, a raceway surface 15 is provided on the outer peripheral surface on the one axial end side of the annular separate inner ring 3.

次に、実施の形態１の複列転がり軸受１００の組立手順について説明する。
まず、断面コの字形の外輪１の凹み部分に保持器６に保持された大きいピッチ円直径Ｄ１の列の玉群４を介装させる。次に、断面コの字形の内輪２の外径側部２ａを嵌り込ませると共に内輪２の凹み部分に外輪１の内径側部１ｃを嵌り込ませるように組み合わせる。
さらに、外輪１の内径側部１ａの内周面の軌道面１３と内輪２の内径側部２ａの外周面との間に、保持器７に保持され、玉群４のピッチ円直径Ｄ１より小さいピッチ円直径Ｄ２の玉群５を介装させる。
最後に、外輪１の内径側部１ｃの内周面の軌道面１３と接触している玉群５と内輪２の内径側部２ｃの外周面と間に別体内輪３を圧入し、内輪２の内径側部２ｃの外周面に別体内輪３が装着され、外輪１の内径側部１ｃの内周面の軌道面１３と別体内輪３の外周面の軌道面１５との間に玉群５が介装させられて複列転がり軸受１００の組立てが完成する。 Next, an assembling procedure of the double row rolling bearing 100 of the first embodiment will be described.
First, a group of balls 4 having a large pitch circle diameter D1 held by a cage 6 is interposed in a recessed portion of the outer ring 1 having a U-shaped cross section. Next, the outer diameter side portion 2 a of the inner ring 2 having a U-shaped cross section is fitted and the inner diameter side portion 1 c of the outer ring 1 is fitted into the recessed portion of the inner ring 2.
Furthermore, it is held by the cage 7 between the raceway surface 13 on the inner peripheral surface of the inner ring side portion 1 a of the outer ring 1 and the outer peripheral surface of the inner ring side portion 2 a of the inner ring 2 and is smaller than the pitch circle diameter D 1 of the ball group 4. A ball group 5 having a pitch circle diameter D2 is interposed.
Finally, another inner ring 3 is press-fitted between the ball group 5 that is in contact with the raceway surface 13 on the inner peripheral surface of the inner ring side portion 1 c of the outer ring 1 and the outer peripheral surface of the inner ring side portion 2 c of the inner ring 2. A separate inner ring 3 is mounted on the outer peripheral surface of the inner diameter side portion 2c of the inner ring, and a ball group is disposed between the raceway surface 13 on the inner peripheral surface of the inner diameter side portion 1c of the outer ring 1 and the raceway surface 15 on the outer peripheral surface of the separate inner ring 3. 5 is interposed, and the assembly of the double row rolling bearing 100 is completed.

上述した構成を有する複列転がり軸受１００は例えば、図２に示すように、外輪１の外径側部がデフピニオンユニットのハウジング１０１に固定され、内輪２の内径側部の内周面にデフピニオンユニットのピニオン軸１０２が挿着され、ピニオン軸１０２の一端にピニオンギヤ１０３が取り付けられる。   For example, as shown in FIG. 2, the double-row rolling bearing 100 having the above-described configuration is configured such that the outer diameter side portion of the outer ring 1 is fixed to the housing 101 of the differential pinion unit, and the inner ring surface of the inner ring 2 has a differential inner surface. A pinion shaft 102 of the pinion unit is inserted and a pinion gear 103 is attached to one end of the pinion shaft 102.

以上のように、本実施の形態１では、断面コの字形の外輪１の凹み部分に断面コの字形の内輪２の外径側部２ｃを嵌り込ませると共に内輪２の凹み部分に外輪１の内径側部１ｃを嵌り込ませるように組み合わせ、その外輪１の外径側部１ａの内周面の軌道面１２と内輪２の外径側部２ａの外周面の軌道面１４との間に、保持器６に保持された大きいピッチ円直径Ｄ１の列の玉群４を介装させ、外輪１の内径側部１ｃの内周面の軌道面１３と内輪２の内径側部２ｃの外周面に装着した環状の別体内輪３の外周面の軌道面１５との間に、保持器７に保持され、玉群４のピッチ円直径Ｄ１より小さいピッチ円直径Ｄ２の玉群５を介装させて構成されているので、外輪１をデフピニオンユニットのハウジング１０１に固定し、内輪２にピニオン軸１０２を挿着することによってデフピニオン用として使用することができ、幅寸法を単列軸受並の寸法に短くできる一方、ピッチ円直径Ｄ１を大きくできるため、玉群４の周方向における介装スペースが増大する分、該玉群４の介装数を増やすことにより、軸受としての剛性を確保することができ、負荷容量が大きな装置に提供することができる。   As described above, in the first embodiment, the outer diameter side portion 2c of the inner ring 2 having a U-shaped cross section is fitted into the recessed portion of the outer ring 1 having a U-shaped cross section, and the outer ring 1 is inserted into the recessed portion of the inner ring 2. The inner diameter side portion 1c is combined so as to be fitted, and between the raceway surface 12 of the outer circumference side portion 1a of the outer ring 1 and the raceway surface 14 of the outer circumference surface of the outer diameter side portion 2a of the inner ring 2, A group of balls 4 of a large pitch circle diameter D1 held by the cage 6 is interposed, and the inner raceway surface 13 of the inner diameter side portion 1c of the outer ring 1 and the outer circumference surface of the inner diameter side portion 2c of the inner ring 2 are arranged. A ball group 5 having a pitch circle diameter D2 smaller than the pitch circle diameter D1 of the ball group 4 is interposed between the ball ring 4 and the raceway surface 15 on the outer peripheral surface of the attached annular separate inner ring 3. Since it is configured, the outer ring 1 is fixed to the housing 101 of the differential pinion unit, and the pinion shaft 10 is attached to the inner ring 2. Can be used for differential pinions, and the width dimension can be shortened to the same size as a single row bearing, while the pitch circle diameter D1 can be increased, so that the interposing space in the circumferential direction of the ball group 4 is increased. Accordingly, by increasing the number of interpositions of the ball group 4, rigidity as a bearing can be ensured, and a device with a large load capacity can be provided.

なお、この実施の形態１では、図１〜図３に示すように、外輪１の凹み部分の開口が左側に位置し、内輪２の凹み部分の開口が右側に位置する状態で互いに組み合わされているが、外輪１の凹み部分の開口が右側に位置し、内輪２の凹み部分の開口が左側に位置する状態で互いに組み合わされるようにしても、作用、効果は実施の形態１と同様である。
また、断面コの字形とは、外径側部と内径側部とこれら一端側を連続する中間部とを有する部材の形状を表し、開口部の向きを問わず用いることができる。 In the first embodiment, as shown in FIGS. 1 to 3, the opening of the recessed portion of the outer ring 1 is positioned on the left side, and the opening of the recessed portion of the inner ring 2 is positioned on the right side. However, even if the opening of the recessed portion of the outer ring 1 is located on the right side and the opening of the recessed portion of the inner ring 2 is located on the left side, the operations and effects are the same as in the first embodiment. .
The U-shaped cross-section represents the shape of a member having an outer diameter side portion, an inner diameter side portion, and an intermediate portion that is continuous at one end side, and can be used regardless of the orientation of the opening.

実施の形態２．
図３は本発明の実施の形態２に係る複列転がり軸受の全体構成を示す断面図である。
この実施の形態２において、実施の形態１と同様の構成は同一符号を付して重複した構成の説明を省略する。
上記実施の形態１は内輪２の内径側部２ｃの外周面に別体内輪３を圧入嵌合して装着させているが、この実施の形態２では、内輪２の内径側部２ｃの外周面に別体内輪３を嵌合して装着させた後に、内輪２の内径側部２ｃを、別体内輪３の外端面に対してかしめてかしめ部１０を形成することが実施の形態１と相違するだけである。このかしめ部１０を形成して別体内輪３を抜け止めすることにより、内輪２と別体内輪３は一体回転可能になり、内輪２と別体の環状内輪３のバラケが防止される。また、かしめに代えてボルト締めなど種々の固定方法を適用することができる。
この実施の形態２の作用、効果は実施の形態１と同様である。 Embodiment 2. FIG.
FIG. 3 is a cross-sectional view showing an overall configuration of a double row rolling bearing according to Embodiment 2 of the present invention.
In the second embodiment, the same components as those of the first embodiment are denoted by the same reference numerals, and the description of the overlapping components is omitted.
In the first embodiment, the separate inner ring 3 is press-fitted and attached to the outer peripheral surface of the inner diameter side portion 2c of the inner ring 2, but in this second embodiment, the outer peripheral surface of the inner diameter side portion 2c of the inner ring 2 is attached. Unlike the first embodiment, after the inner ring 3 is fitted and attached to the inner ring 2, the inner diameter side portion 2 c of the inner ring 2 is caulked against the outer end surface of the other inner ring 3. Just do it. By forming the caulking portion 10 to prevent the separate inner ring 3 from coming off, the inner ring 2 and the separate inner ring 3 can rotate together, and the inner ring 2 and the separate annular inner ring 3 are prevented from being separated. Further, various fixing methods such as bolt tightening can be applied instead of caulking.
The operations and effects of the second embodiment are the same as those of the first embodiment.

実施の形態３．
図４は本発明の実施の形態３に係る車軸支持用ハブユニットの全体構成を示す上半分断面図である。なお、図４で軸方向左側は車両アウタ側（軸方向一方側）を、軸方向右側は車両インナ側（軸方向他方側）を示す。
この実施の形態３は実施の形態２の変型例ともいうべきもので、車軸支持用ハブユニットとしてハブホイールと複列転がり軸受とを一体に構成したものである。
この実施の形態３はの車軸支持用ハブユニット２００は、一種のアンギュラ玉軸受であり、炭素鋼又は軸受用鋼で形成された、外径側部２１ａと中間部２１ｂと内径側部２１ｃとを有する外輪２１と、炭素鋼又は軸受用鋼で形成され、車両アウタ側である軸方向一方側の外周面に車輪取付フランジ３７を有し、車両インナ側である軸方向他方側に外径側部２２ａと中間部２２ｂと内径側部２２ｃを備えたハブホイール２２と、炭素鋼又は軸受用鋼で形成され、ハブホイール２２の内径側部２２ｃの外周面に嵌合して装着される環状の別体内輪２３と、軸受用鋼やセラミックス等で形成されたピッチ円直径が異なる二列の玉群２４，２５と、二列の玉群２４，２５をそれぞれ保持する鋼板や樹脂で形成された保持器２６，２７と、一対のシール部材２８、２９とを有して構成されている。 Embodiment 3 FIG.
FIG. 4 is an upper half sectional view showing the overall configuration of an axle supporting hub unit according to Embodiment 3 of the present invention. In FIG. 4, the left side in the axial direction shows the vehicle outer side (one side in the axial direction), and the right side in the axial direction shows the vehicle inner side (the other side in the axial direction).
The third embodiment should be referred to as a modified example of the second embodiment, in which a hub wheel and a double row rolling bearing are integrally formed as an axle support hub unit.
The axle support hub unit 200 according to the third embodiment is a kind of angular contact ball bearing, and includes an outer diameter side portion 21a, an intermediate portion 21b, and an inner diameter side portion 21c formed of carbon steel or bearing steel. The outer ring 21 is formed of carbon steel or bearing steel, and has a wheel mounting flange 37 on the outer peripheral surface on one axial side that is the vehicle outer side, and the outer diameter side portion on the other axial side that is the vehicle inner side. A hub wheel 22 provided with 22a, an intermediate portion 22b, and an inner diameter side portion 22c, and an annular separate member that is formed of carbon steel or bearing steel and that is fitted and fitted to the outer peripheral surface of the inner diameter side portion 22c of the hub wheel 22. Inner ring 23, two rows of ball groups 24 and 25 having different pitch circle diameters formed of bearing steel, ceramics, etc., and a steel plate or a resin holding the two rows of ball groups 24 and 25, respectively. Containers 26 and 27 and a pair of seals Is constructed and a wood 28,29.

断面略コの字形の外輪２１は、外径側部２１ａと内径側部２１ｃの内周面にそれぞれ軌道面３２，３３を有すると共に、車両インナ側における外周面に車両（不図示）に固定するためのフランジ３６を有する。
また、ハブホイール２２は、外径側部２２ａの外周面に軌道面３４を有し、車体取付フランジ３７の外縁側には間隔を置いてボルト挿通孔３７ａが複数形成されている。
さらに、別体内輪２３の軸方向一端側の外周面に軌道面３５を有する。 The outer ring 21 having a substantially U-shaped cross section has raceway surfaces 32 and 33 on the inner peripheral surfaces of the outer diameter side portion 21a and the inner diameter side portion 21c, respectively, and is fixed to a vehicle (not shown) on the outer peripheral surface on the vehicle inner side. There is a flange 36 for the purpose.
The hub wheel 22 has a raceway surface 34 on the outer peripheral surface of the outer diameter side portion 22a, and a plurality of bolt insertion holes 37a are formed on the outer edge side of the vehicle body mounting flange 37 at intervals.
Furthermore, a raceway surface 35 is provided on the outer peripheral surface on the one axial end side of the separate inner ring 23.

次に、実施の形態３の車軸支持用ハブユニット２００の組立手順について説明する。
まず、断面コの字形の外輪２１の凹み部分に保持器２６に保持された大きいピッチ円直径Ｄ１の列の玉群２４を介装させる。次に、ハブホイール２２の外径側部２２ａを嵌り込ませると共にハブホイール２２の凹み部分に外輪２１の内径側部２１ｃを嵌り込ませるように組み合わせる。
さらに、外輪２１の内径側部２１ａの内周面の軌道面３３とハブホイール２２の内径側部２２ｃの外周面との間に、保持器２７に保持され、玉群４のピッチ円直径Ｄ１より小さいピッチ円直径Ｄ２の玉群２５を介装させる。 Next, an assembly procedure of the axle support hub unit 200 according to the third embodiment will be described.
First, a group of balls 24 having a large pitch circle diameter D1 held by a cage 26 is interposed in a recessed portion of the outer ring 21 having a U-shaped cross section. Next, the outer diameter side portion 22 a of the hub wheel 22 is fitted and the inner diameter side portion 21 c of the outer ring 21 is fitted into the recessed portion of the hub wheel 22.
Further, between the raceway surface 33 on the inner peripheral surface of the inner diameter side portion 21 a of the outer ring 21 and the outer peripheral surface of the inner diameter side portion 22 c of the hub wheel 22, the retainer 27 holds the pitch circle diameter D 1 of the ball group 4. A ball group 25 having a small pitch circle diameter D2 is interposed.

最後に、外輪１の内径側部２１ｃの内周面の軌道面１３と接触している玉群２５とハブホイール２２の内径側部２２ｃの外周面と間に別体内輪２３を挿入し、ハブホイール２２２の内径側部２２ｃの外周面に別体内輪２３が装着され、外輪２１の内径側部２１ｃの内周面の軌道面３３と別体内輪２３の外周面の軌道面３５との間に玉群２５を介装させた後に、内径側部２２ｂを、別体内輪２３の外端面に対してかしめてかしめ部３０を形成して車軸支持用ハブユニット２００の組立てが完成する。
このかしめ部３０を形成して別体内輪２３を抜け止めすることにより、ハブホイール２２と別体内輪２３は確実に固定される。
なお、各列のシール部材２８，２９は、外輪２１とハブホイール２２の外径側部２２ａとの間と、外輪２１と別体内輪２３との間に設けられている。 Finally, another inner ring 23 is inserted between the ball group 25 in contact with the raceway surface 13 on the inner peripheral surface of the inner diameter side portion 21c of the outer ring 1 and the outer peripheral surface of the inner diameter side portion 22c of the hub wheel 22, and the hub A separate inner ring 23 is mounted on the outer peripheral surface of the inner diameter side portion 22 c of the wheel 222, and between the raceway surface 33 on the inner peripheral surface of the inner diameter side portion 21 c of the outer ring 21 and the raceway surface 35 on the outer peripheral surface of the separate inner ring 23. After interposing the ball group 25, the inner diameter side portion 22b is caulked against the outer end surface of the separate inner ring 23 to form the caulking portion 30 to complete the assembly of the axle support hub unit 200.
By forming the caulking portion 30 to prevent the separate inner ring 23 from coming off, the hub wheel 22 and the separate inner ring 23 are securely fixed.
The seal members 28 and 29 in each row are provided between the outer ring 21 and the outer diameter side portion 22 a of the hub wheel 22 and between the outer ring 21 and the separate inner ring 23.

上述した構成を有する転がり軸受装置２００は、外輪２１のフランジ３６の車両側インナ側が車両の一部であるナックル（不図示）に固定され、ハブホイール２２のフランジ２３７の車両アウタ側に車輪（不図示）が取り付けられる。   In the rolling bearing device 200 having the above-described configuration, the inner side of the flange 36 of the outer ring 21 is fixed to a knuckle (not shown) which is a part of the vehicle, and the wheel (not shown) is connected to the outer side of the flange 237 of the hub wheel 22. Is attached.

以上のように、本実施の形態３では、ハブホイール２２に対してその軸方向他方側の外径側部を包み込むように断面略コの字形で外径側部と内径側部を有する外輪２１を組み合わせ、ハブホイール２２の外径側部２２ａの外周面の軌道面３４と外輪２１の外径側部の内周面の軌道面３２との間に、保持器２６に保持された大きいピッチ円直径Ｄ１の列の玉群２４を介装させ、ハブホイール２２の内径側部２２ｂの外周面に装着された環状の別体内輪２３の外周面と外輪２１の内径側部２１ｃの内周面の軌道面３３との間に、保持器２７に保持され、玉群２４のピッチ円直径Ｄ１より小さいピッチ円直径Ｄ２の玉群２５を介装させて構成されているので、幅寸法を単列軸受並の寸法に短くできる一方、ピッチ円直径Ｄ１を大きくできるため、玉群２４の周方向における介装スペースが増大する分、該玉群２４の介装数を増やすことにより、軸受としての剛性を確保することができ、負荷容量が大きなハブユニットを得ることができる。   As described above, in the third embodiment, the outer ring 21 having an outer diameter side portion and an inner diameter side portion with a substantially U-shaped cross section so as to wrap the outer diameter side portion on the other axial side with respect to the hub wheel 22. The large pitch circle held by the cage 26 between the raceway surface 34 on the outer peripheral surface of the outer diameter side portion 22a of the hub wheel 22 and the raceway surface 32 on the inner peripheral surface of the outer diameter side portion of the outer ring 21. A ball group 24 in a row having a diameter D1 is interposed between the outer peripheral surface of the annular separate inner ring 23 and the inner peripheral surface of the inner ring side portion 21c of the outer ring 21, which are mounted on the outer peripheral surface of the inner diameter side portion 22b of the hub wheel 22. Between the raceway surface 33, the ball 27 is held by the cage 27, and the ball group 25 having a pitch circle diameter D2 smaller than the pitch circle diameter D1 of the ball group 24 is interposed. While it can be shortened to an average size, the pitch circle diameter D1 can be increased. Amount that interposed space is increased in the circumferential direction of 24, by increasing the interposed number of 該玉 group 24, it is possible to secure the rigidity of the bearing can load capacitance obtain a large hub unit.

上記実施の形態１〜３はいずれも、玉群４、２４と玉群５、２５との玉径を同一にしているが、玉群４、２４と玉群５、２５との玉径が異なるものであってよい。
また、上記実施の形態１〜３はいずれも、玉軸受の例を示したが、円錐ころ軸受も本発明は適用可能である。 In all of the first to third embodiments, the ball diameters of the ball groups 4, 24 and the ball groups 5, 25 are the same, but the ball diameters of the ball groups 4, 24 and the ball groups 5, 25 are different. It may be a thing.
Moreover, although all the said Embodiment 1-3 showed the example of the ball bearing, this invention is applicable also to a tapered roller bearing.

本発明の実施の形態１に係る複列転がり軸受の全体構成を示す断面図。Sectional drawing which shows the whole structure of the double row rolling bearing which concerns on Embodiment 1 of this invention. 同複列転がり軸受をデフピニオンユニットに使用した状態を示す上半分断面図。The upper half sectional view showing the state where the same double row rolling bearing is used for the differential pinion unit. 本発明の実施の形態２に係る複列転がり軸受の全体構成を示す断面図。Sectional drawing which shows the whole structure of the double row rolling bearing which concerns on Embodiment 2 of this invention. 本発明の実施の形態３に係る車軸支持用ハブユニットの全体構成を示す上半分断面図。The upper half sectional view showing the whole axle support hub unit composition concerning Embodiment 3 of the present invention.

符号の説明Explanation of symbols

１ 外輪、１ａ 外径側部、１ｂ 中間部、１ｃ 内径側部、２ 内輪、２ａ 外径側部、２ｂ 中間部、２ｃ 内径側部、３ 別体内輪、４、５ 玉群、６、７ 保持器、１２、１３外輪の軌道面、１４ 内輪の軌道面、１５ 別体内輪の軌道面、１００ 複列転がり軸受、１０１ ハウジンウ、１０２ ピニオン軸、１０３ ピニオンギヤ。   DESCRIPTION OF SYMBOLS 1 Outer ring, 1a Outer diameter side part, 1b Middle part, 1c Inner diameter side part, 2 Inner ring, 2a Outer diameter side part, 2b Middle part, 2c Inner diameter side part, Separate body ring, 4, 5 Ball group, 6, 7 Cage, 12, 13 outer ring raceway, 14 inner ring raceway, 15 inner ring raceway, 100 double row rolling bearing, 101 housing, 102 pinion shaft, 103 pinion gear.

Claims (2)

断面コの字形で、外径側部と内径側部の内周面にそれぞれ軌道面を有する外輪と、
断面コの字形で、外径側部の外周面に軌道面を有し、前記外輪の凹み部分に外径側部を嵌り込ませて組み合わされた内輪と、
前記内輪の内径側部の外周面に装着された別体内輪と、
前記外輪の外径側部の内周面の軌道面と前記内輪の外径側部の外周面の軌道面との間に介装させられた大きいピッチ円直径Ｄ１の列の転動体群と、
前記外輪の内径側部の内周面の軌道面と前記内輪の内径側部の外周面に装着された前記別体内輪の外周面の軌道面との間に介装させられ、前記転動体のピッチ円直径Ｄ１より小さいピッチ円直径Ｄ２の列の転動体群と、
を備えたことを特徴とする複列転がり軸受。 An outer ring having a U-shaped cross section and having a raceway surface on the inner peripheral surface of each of the outer diameter side and the inner diameter side;
An inner ring that is U-shaped in cross section, has a raceway surface on the outer peripheral surface of the outer diameter side portion, and is combined by fitting the outer diameter side portion into the recessed portion of the outer ring;
A separate inner ring attached to the outer peripheral surface of the inner diameter side of the inner ring,
A group of rolling elements in a row having a large pitch circle diameter D1 interposed between a raceway surface of an inner peripheral surface of an outer diameter side portion of the outer ring and a raceway surface of an outer peripheral surface of an outer diameter side portion of the inner ring;
Interposed between the raceway surface of the inner peripheral surface of the inner ring side portion of the outer ring and the track surface of the outer peripheral surface of the separate inner ring mounted on the outer peripheral surface of the inner ring side portion of the inner ring, A group of rolling elements in a row with a pitch circle diameter D2 smaller than the pitch circle diameter D1,
A double-row rolling bearing characterized by comprising: 軸方向一方側の外周面に車輪取付フランジを有し、軸方向他方側に外周面に軌道面を有する外径側部及び内径側部を備えたハブホイールと、
前記ハブホイールの軸方向他方側の外径側部を包み込むように組み合わされ、外径側部と内径側部の内周面にそれぞれ軌道面を有する外輪と、
前記ハブホイールの軸方向他方側の外径側部の外周面の軌道面と前記外輪の外径側部の内周面の軌道面との間に介装させられた大きいピッチ円直径Ｄ１の列の転動体群と、
前記ハブホイールの内径側部の外周面に装着された別体内輪の外周面の軌道面と前記外輪の内径側部の内周面の軌道面との間に介装させられ、前記転動体のピッチ円直径Ｄ１より小さいピッチ円直径Ｄ２の列の転動体群と、
を備えたことを特徴とする車軸支持用ハブユニット。 A hub wheel having an outer diameter side portion and an inner diameter side portion having a wheel mounting flange on the outer peripheral surface on one side in the axial direction and a raceway surface on the outer peripheral surface on the other side in the axial direction;
An outer ring that is combined so as to wrap the outer diameter side portion on the other side in the axial direction of the hub wheel, and has a raceway surface on the inner peripheral surface of the outer diameter side portion and the inner diameter side portion,
A row of large pitch circle diameters D1 interposed between the raceway surface of the outer peripheral surface of the outer diameter side portion on the other axial side of the hub wheel and the raceway surface of the inner peripheral surface of the outer diameter side portion of the outer ring. Rolling element group of
Interposed between the raceway surface of the outer peripheral surface of another inner ring mounted on the outer peripheral surface of the inner diameter side portion of the hub wheel and the raceway surface of the inner peripheral surface of the inner ring side portion of the outer ring, A group of rolling elements in a row with a pitch circle diameter D2 smaller than the pitch circle diameter D1,
A hub unit for supporting an axle, comprising:
JP2008180143A 2008-07-10 2008-07-10 Double row rolling bearing and hub unit for axle support Withdrawn JP2010019333A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008180143A JP2010019333A (en) 2008-07-10 2008-07-10 Double row rolling bearing and hub unit for axle support

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008180143A JP2010019333A (en) 2008-07-10 2008-07-10 Double row rolling bearing and hub unit for axle support

Publications (1)

Publication Number Publication Date
JP2010019333A true JP2010019333A (en) 2010-01-28

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Country Link
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