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JP2014025524A - Pinion shaft supporting bearing device - Google Patents

Pinion shaft supporting bearing device Download PDF

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Publication number
JP2014025524A
JP2014025524A JP2012165762A JP2012165762A JP2014025524A JP 2014025524 A JP2014025524 A JP 2014025524A JP 2012165762 A JP2012165762 A JP 2012165762A JP 2012165762 A JP2012165762 A JP 2012165762A JP 2014025524 A JP2014025524 A JP 2014025524A
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Prior art keywords
pinion shaft
pinion
bearing device
raceway surface
diameter side
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JP2012165762A
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Japanese (ja)
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Kanichi Kouda
寛一 耕田
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JTEKT Corp
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JTEKT Corp
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Priority to JP2012165762A priority Critical patent/JP2014025524A/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
    • 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
    • F16C2361/00—Apparatus or articles in engineering in general
    • F16C2361/61—Toothed gear systems, e.g. support of pinion shafts

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  • Support Of The Bearing (AREA)
  • General Details Of Gearings (AREA)
  • Mounting Of Bearings Or Others (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

【課題】構造を簡素化すると共に組付け性を向上することができるピニオン軸支持用軸受装置を提供する。
【解決手段】複列の外径側軌道面４ａ，４ｂを有する外輪４と、一端部にピニオンギヤ２１を設け外周にピニオンギヤ側の第１内径側軌道面２ａを有するピニオン軸２と、反ピニオンギヤ側の第２内径側軌道面３ａを有しピニオン軸２の他端部に外嵌される内輪３と、外径側軌道面４ａ，４ｂと第１内径側軌道面２ａ及び第２内径側軌道面３ａとの間に介装される複列の玉５とを備え、ピニオン軸２を回転自在に支持するピニオン軸支持用軸受装置１であって、ピニオン軸２の他端部には、円筒状のかしめ部２２が形成され、かしめ部２２を径方向外方へ屈曲させて内輪３をかしめ固定し、このかしめ固定により軸受に予圧を付与する。
【選択図】図１Provided is a pinion shaft supporting bearing device capable of simplifying the structure and improving the assemblability.
SOLUTION: An outer ring 4 having double-row outer diameter side raceway surfaces 4a, 4b, a pinion shaft 21 having a pinion gear 21 at one end and a first inner diameter side raceway surface 2a on the outer periphery, and an anti-pinion gear side. The inner ring 3 having the second inner diameter side raceway surface 3a and fitted on the other end of the pinion shaft 2, the outer diameter side raceway surfaces 4a and 4b, the first inner diameter side raceway surface 2a, and the second inner diameter side raceway surface. The pinion shaft support bearing device 1 includes a double-row ball 5 interposed between the pinion shaft 2 and the pinion shaft 2 so that the pinion shaft 2 is rotatably supported. A caulking portion 22 is formed, the caulking portion 22 is bent radially outward to fix the inner ring 3 by caulking, and a preload is applied to the bearing by the caulking.
[Selection] Figure 1

Description

本発明は、エンジン等の回転駆動源からの駆動トルクを伝達するピニオン軸を支持するのに好適なピニオン軸支持用軸受装置に関する。   The present invention relates to a pinion shaft support bearing device suitable for supporting a pinion shaft that transmits drive torque from a rotational drive source such as an engine.

エンジン等の回転駆動源からの駆動トルクを伝達する装置としては、トランスファー装置やデファレンシャル装置が知られており、これらの装置は、基本構成として、一端部にピニオンギヤが配設されたピニオン軸と、ピニオン軸をケーシングに回転自在に支持する１対の円錐ころ軸受と、を備えるピニオン軸支持用軸受装置を有している。   As a device for transmitting a driving torque from a rotational drive source such as an engine, a transfer device or a differential device is known, and these devices have, as a basic configuration, a pinion shaft having a pinion gear disposed at one end thereof, and And a pair of tapered roller bearings that rotatably support the pinion shaft on the casing.

円錐ころ軸受は、高い剛性を得るという点では好ましいが、回転トルクが大きいという問題があった。そこで、近年、ピニオン軸支持用軸受装置では、自動車の燃費向上の観点から低トルク化のニーズがあり、玉軸受が採用されている。しかし、玉軸受は、円錐ころ軸受に対して同等の剛性を得るには径方向に大きくなるため、ピニオンギヤ側の玉軸受の内輪とピニオン軸とを一体化することにより、径方向に小型化している。具体的には、ピニオン軸支持用軸受装置では、ピニオンギヤ側の玉軸受はピニオン軸の外周面を内径側軌道とし、反ピニオンギヤ側の玉軸受はピニオン軸に外嵌した内輪を内径側軌道とし、また、これら両軸受はケーシングに内嵌した外輪を外径側軌道としている。（例えば、特許文献１を参照）   The tapered roller bearing is preferable in terms of obtaining high rigidity, but has a problem that the rotational torque is large. Therefore, in recent years, pinion shaft support bearing devices have a need for lower torque from the viewpoint of improving fuel efficiency of automobiles, and ball bearings have been adopted. However, since the ball bearing becomes larger in the radial direction in order to obtain the same rigidity as that of the tapered roller bearing, it is reduced in size in the radial direction by integrating the inner ring of the pinion gear side ball bearing and the pinion shaft. Yes. Specifically, in the pinion shaft support bearing device, the pinion gear side ball bearing has an outer peripheral surface of the pinion shaft as an inner diameter side track, and the anti-pinion gear side ball bearing has an inner ring externally fitted to the pinion shaft as an inner diameter side track, Moreover, these both bearings have an outer ring fitted inside the casing as an outer diameter side track. (For example, see Patent Document 1)

上記のピニオン軸支持用軸受装置では、例えば、トランスファー装置に装着される場合、トランスファー装置メーカでの組み立ては次のように行われる。ケーシングに対して外輪を内嵌し、ピニオン軸に玉を装着し、ピニオン軸をケーシングに挿嵌し、間座を装着し、そして、内輪をピニオン軸に外嵌する。また、このピニオン軸支持用軸受装置は、内輪及び外輪をピニオン軸やケーシングの段部に押し当てることにより軸方向に位置決めし、また、断面形状がアーチ状の間座をピニオン軸の段部と内輪との間に装着して、軸受の与圧量を設定する。   In the above-described pinion shaft support bearing device, for example, when mounted on a transfer device, assembly by the transfer device manufacturer is performed as follows. An outer ring is fitted into the casing, a ball is mounted on the pinion shaft, the pinion shaft is inserted into the casing, a spacer is mounted, and the inner ring is fitted onto the pinion shaft. In addition, this pinion shaft supporting bearing device positions the inner ring and the outer ring in the axial direction by pressing against the pinion shaft and the step portion of the casing, and the cross-sectional shape of the spacer is an arch-shaped spacer with the step portion of the pinion shaft. It is mounted between the inner ring and the bearing pressure is set.

特開２０１１−８５２４６号公報JP 2011-85246 A

しかしながら、上記のピニオン軸支持用軸受装置では、構造が複雑なために組付け性が悪化しており、また、トランスファー装置メーカにおいて、組付難易度が高い圧入工程や与圧量設定工程等が必要であり、組付け性を改善するニーズがあった。そこで、ピニオン軸支持用軸受装置は、構造を簡素化すると共に組付け性を向上することが課題となっていた。   However, the above-described pinion shaft support bearing device has a complicated structure, so that the assemblability is deteriorated. In addition, the transfer device manufacturer has a press-fitting process and a pressurization amount setting process that are difficult to assemble. It was necessary and there was a need to improve assembly. Thus, the bearing device for supporting the pinion shaft has a problem of simplifying the structure and improving assemblability.

本発明は、このような課題を解決するためになされたものであって、構造を簡素化すると共に組付け性を向上することができるピニオン軸支持用軸受装置を提供することを目的とする。   The present invention has been made to solve such a problem, and an object of the present invention is to provide a pinion shaft supporting bearing device that can simplify the structure and improve the assembling property.

上記の課題を解決するため、請求項１に係るピニオン軸支持用軸受装置の構成上の特徴は、複列の外径側軌道面を有する外輪と、一端部にピニオンギヤを設け外周にピニオンギヤ側の第１内径側軌道面を有するピニオン軸と、反ピニオンギヤ側の第２内径側軌道面を有し前記ピニオン軸の他端部に外嵌される内輪と、前記外径側軌道面と前記第１内径側軌道面及び第２内径側軌道面との間に介装される複列の玉とを備え、前記ピニオン軸を回転自在に支持するピニオン軸支持用軸受装置であって、前記ピニオン軸の他端部には、円筒状のかしめ部が形成され、前記かしめ部を径方向外方へ屈曲させて前記内輪をかしめ固定し、このかしめ固定により軸受に予圧を付与することである。   In order to solve the above-mentioned problems, the structural features of the pinion shaft support bearing device according to claim 1 are characterized in that an outer ring having a double row outer diameter side raceway surface, a pinion gear on one end, and a pinion gear side on the outer periphery. A pinion shaft having a first inner diameter side raceway surface, an inner ring having a second inner diameter side raceway surface on the side opposite to the pinion gear and fitted on the other end of the pinion shaft, the outer diameter side raceway surface and the first A pinion shaft supporting bearing device that includes a double row ball interposed between an inner diameter side raceway surface and a second inner diameter side raceway surface, and rotatably supports the pinion shaft, A cylindrical caulking portion is formed at the other end, and the caulking portion is bent outward in the radial direction to fix the inner ring by caulking, and preload is applied to the bearing by the caulking.

請求項１のピニオン軸支持用軸受装置によれば、その組立ては、外輪に玉を装着し、ピニオン軸を挿嵌し、内輪をピニオン軸に外嵌し、そして、かしめ固定して行われる。これにより、間座を必要とせずにかしめ固定により軸受に予圧を付与するので、構造が簡素化できると共に組付け性を向上することができる。また、このピニオン軸支持用軸受装置によれば、ピニオン軸支持用軸受装置が一体化されるので、例えば、トランスファー装置メーカにて、トランスファー装置に装着する場合、一体化されたこの軸受装置をケーシングに装着するだけで良く、組付け性を向上することができる。   According to the bearing device for supporting the pinion shaft of the first aspect, the assembly is performed by mounting a ball on the outer ring, inserting and inserting the pinion shaft, externally fitting the inner ring on the pinion shaft, and caulking and fixing. Thereby, since a preload is applied to the bearing by caulking and fixing without requiring a spacer, the structure can be simplified and the assembling property can be improved. Also, according to this pinion shaft support bearing device, since the pinion shaft support bearing device is integrated, for example, when the transfer device manufacturer mounts it on the transfer device, the integrated bearing device is a casing. It is only necessary to attach it to the housing, and the assemblability can be improved.

請求項２に係るピニオン軸支持用軸受装置の構成上の特徴は、前記かしめ部の軸方向外方側端面には、軸方向に凹凸するスプラインが形成され、前記ピニオン軸と前記かしめ部に接続される出力軸とが軸方向にスプライン結合することである。   The pinion shaft supporting bearing device according to claim 2 is characterized in that a spline that is uneven in the axial direction is formed on an axially outer end surface of the caulking portion, and is connected to the pinion shaft and the caulking portion. The output shaft to be connected is splined in the axial direction.

請求項２のピニオン軸支持用軸受装置によれば、ピニオン軸と出力軸とが軸方向にスプライン結合するので、構造が簡素化でき、また、例えば、この軸受装置をトランスファー装置に装着する場合、出力軸の圧入が不要なため、組付け性を向上することができる。   According to the pinion shaft supporting bearing device of claim 2, since the pinion shaft and the output shaft are splined in the axial direction, the structure can be simplified. For example, when the bearing device is mounted on the transfer device, Since press-fitting of the output shaft is unnecessary, the assembling property can be improved.

本発明によれば、構造を簡素化すると共に組付け性を向上することができるピニオン軸支持用軸受装置を提供できる。   ADVANTAGE OF THE INVENTION According to this invention, the bearing apparatus for pinion shaft support which can simplify a structure and can improve assembly | attachment property can be provided.

本発明の一実施形態であるピニオン軸支持用軸受装置の軸方向の断面図である。It is sectional drawing of the axial direction of the pinion shaft support bearing apparatus which is one Embodiment of this invention. 本発明の一実施形態であるピニオン軸支持用軸受装置のかしめ部を説明する軸方向の断面図である。It is sectional drawing of the axial direction explaining the crimping part of the bearing apparatus for pinion shaft supports which is one Embodiment of this invention.

以下、本発明のピニオン軸支持用軸受装置を具体化した実施形態について図面を参照しつつ説明する。なお、以下の説明において、ピニオンギヤ側とはピニオン軸２の一端にピニオンギヤ２１が形成されている側の事であり各図における左側を示し、反ピニオンギヤ側とはピニオン軸２の他端であって出力軸９を接続する側の事であり各図における右側を示すものとする。   DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment in which a pinion shaft supporting bearing device of the invention is embodied will be described with reference to the drawings. In the following description, the pinion gear side is the side where the pinion gear 21 is formed at one end of the pinion shaft 2 and shows the left side in each figure, and the anti-pinion gear side is the other end of the pinion shaft 2. This is the side to which the output shaft 9 is connected, and the right side in each figure is shown.

図１は、本発明の一実施形態であるピニオン軸支持用軸受装置１の軸方向の断面図である。図１を参照しつつ説明する。ピニオン軸支持用軸受装置１は、例えば４輪駆動車用のトランスファー装置のケーシング８に、ピニオン軸２を回転自在に支持したものであり、複列外向きのアンギュラ玉軸受構造とされている。具体的には、ピニオン軸支持用軸受装置１は、ピニオンギヤ側端にピニオンギヤ２１を設けるピニオン軸２と、ピニオン軸２の反ピニオンギヤ側端に一体形成された嵌め合い部２ｂの外周面に嵌着される内輪３と、ケーシング８の内側に嵌着される外輪４と、ピニオン軸２及び内輪３と外輪４との間にて周方向に配置される２列の玉５とを備えている。後輪駆動用リングギヤ（図示せず）がピニオンギヤ２１に噛み合わされ、ピニオン軸２の反ピニオンギヤ側端が出力軸９を介してプロペラシャフト（図示せず）に接続されることで、エンジンから後輪に動力が伝達される。   FIG. 1 is a sectional view in the axial direction of a pinion shaft supporting bearing device 1 according to an embodiment of the present invention. This will be described with reference to FIG. The pinion shaft support bearing device 1 is configured such that a pinion shaft 2 is rotatably supported on a casing 8 of a transfer device for a four-wheel drive vehicle, for example, and has a double row outward angular ball bearing structure. Specifically, the pinion shaft support bearing device 1 is fitted on the outer peripheral surface of a pinion shaft 2 provided with a pinion gear 21 at a pinion gear side end, and a fitting portion 2b formed integrally with an anti-pinion gear side end of the pinion shaft 2. The outer ring 4 fitted inside the casing 8 and the pinion shaft 2 and the two rows of balls 5 arranged in the circumferential direction between the inner ring 3 and the outer ring 4 are provided. A rear wheel drive ring gear (not shown) is engaged with the pinion gear 21, and the end of the pinion shaft 2 opposite to the pinion gear is connected to the propeller shaft (not shown) via the output shaft 9. Power is transmitted to.

外輪４の内周面には、ピニオンギヤ側に配列された玉５用の外径側軌道面４ａと、反ピニオンギヤ側に配列された玉５用の外径側軌道面４ｂと、が形成されている。   On the inner peripheral surface of the outer ring 4, an outer diameter side raceway surface 4a for the balls 5 arranged on the pinion gear side and an outer diameter side raceway surface 4b for the balls 5 arranged on the anti-pinion gear side are formed. Yes.

ピニオン軸２のピニオンギヤ２１より内方の内周面には、外輪４の外径側軌道面４ａに対向する第１内径側軌道面２ａが形成されている。ピニオン軸２の反ピニオンギヤ側端部には、かしめ部２２が形成され、かしめ部２２により内輪３をかしめ固定している。ここで、ピニオンギヤ側の軸受の内輪とピニオン軸２とを一体化することにより、径方向に小型化している。   A first inner diameter side raceway surface 2 a facing the outer diameter side raceway surface 4 a of the outer ring 4 is formed on the inner peripheral surface inward of the pinion gear 21 of the pinion shaft 2. A caulking portion 22 is formed at the end of the pinion shaft 2 on the side opposite to the pinion gear, and the inner ring 3 is caulked and fixed by the caulking portion 22. Here, the inner ring of the bearing on the pinion gear side and the pinion shaft 2 are integrated to reduce the size in the radial direction.

内輪３は、嵌め合い部２ｂに外嵌圧入され、嵌め合い部２ｂと一体化されている。内輪３には、外輪４の外径側軌道面４ｂに対向する第２内径側軌道面３ａが形成されている。   The inner ring 3 is press-fitted into the fitting portion 2b and integrated with the fitting portion 2b. The inner ring 3 is formed with a second inner diameter side raceway surface 3 a that faces the outer diameter side raceway surface 4 b of the outer ring 4.

ピニオン軸２及び内輪３と外輪４との間には、転動体としての２列の玉５が保持器５１により保持され配置されている。ここで、転動体として玉５を使用することにより低トルク化している。内輪３及び外輪４の反ピニオンギヤ側の端部間には、シール部材６が配置されている。ピニオン軸支持用軸受装置１の潤滑は、軸受内にグリースを封入するのではなく、ケーシング８内を循環する潤滑油によって行われている。   Between the pinion shaft 2 and the inner ring 3 and the outer ring 4, two rows of balls 5 as rolling elements are held and arranged by a cage 51. Here, the torque is reduced by using the balls 5 as rolling elements. A seal member 6 is disposed between the end portions of the inner ring 3 and the outer ring 4 on the side opposite to the pinion gear. The pinion shaft support bearing device 1 is lubricated by lubricating oil circulating in the casing 8 rather than enclosing grease in the bearing.

外輪４には、２列の玉５の軸方向中央に相当する部分に、潤滑油入口用の径方向貫通孔４３が設けられ、軸方向の反ピニオンギヤ側玉５とシール部材６との間に相当する部分には、斜め方向貫通孔４２が設けられている。ケーシング８の内周には、軸方向に延びる潤滑油溝８１が形成され、両貫通孔４３，４２は、潤滑油溝８１に連通するように設けられている。これにより、焼き付が起こりやすい反ピニオンギヤ側の軸受部分における潤滑油の循環が促進させられている。   The outer ring 4 is provided with a radial through-hole 43 for the lubricating oil inlet at a portion corresponding to the center in the axial direction of the two rows of balls 5, and between the axial anti-pinion gear side ball 5 and the seal member 6. In the corresponding part, an oblique through hole 42 is provided. A lubricating oil groove 81 extending in the axial direction is formed on the inner periphery of the casing 8, and both the through holes 43 and 42 are provided so as to communicate with the lubricating oil groove 81. This promotes the circulation of the lubricating oil in the bearing portion on the anti-pinion gear side where seizure is likely to occur.

出力軸９では、反ピニオンギヤ側において、円柱状の結合部９４の側面と、ピニオン軸２に形成される円筒状のかしめ部２２の側面のスプライン２２ｂと、がスプライン結合している。結合部９４から、円筒状のピニオン軸２を挿通して、ピニオン軸２のピニオンギヤ側端より外方まで軸方向に延在し、その端部にねじ部９１が形成されている。出力軸９は、ねじ部９１にナット９２が螺合しピニオン軸２を挟むようにして固定される。出力軸９には、結合部９４から反ピニオンギヤ側へ軸方向に延在し、プロペラシャフトが取り付けられるフランジ９３が形成される。結合部９４の外周面には、スリンガ７が嵌着され、外輪４との間にラビリンス隙間が形成されている。   In the output shaft 9, the side surface of the columnar coupling portion 94 and the spline 22 b on the side surface of the cylindrical caulking portion 22 formed on the pinion shaft 2 are spline-coupled on the side opposite to the pinion gear. A cylindrical pinion shaft 2 is inserted from the coupling portion 94 and extends axially from the pinion gear side end of the pinion shaft 2 to the outside, and a threaded portion 91 is formed at the end. The output shaft 9 is fixed so that the nut 92 is screwed into the threaded portion 91 and the pinion shaft 2 is sandwiched therebetween. The output shaft 9 is formed with a flange 93 that extends in the axial direction from the coupling portion 94 to the anti-pinion gear side and to which the propeller shaft is attached. A slinger 7 is fitted on the outer peripheral surface of the coupling portion 94, and a labyrinth gap is formed between the outer ring 4 and the outer ring 4.

図２は、本発明の一実施形態であるピニオン軸支持用軸受装置１のかしめ部２２を説明する軸方向の断面図である。ピニオン軸２の反ピニオンギヤ側端では、かしめ前の状態を示すかしめ部２２ａは２点鎖線で示すように円筒状に形成されている。かしめ部２２ａを径方向外方へ屈曲させて実線で示すかしめ部２２が形成され、これにより内輪をかしめ固定している。このかしめ固定により軸受に所定の予圧を付与している。   FIG. 2 is a cross-sectional view in the axial direction illustrating the caulking portion 22 of the pinion shaft support bearing device 1 according to the embodiment of the present invention. At the end of the pinion shaft 2 on the side opposite to the pinion gear, a caulking portion 22a indicating a state before caulking is formed in a cylindrical shape as indicated by a two-dot chain line. The caulking portion 22a is bent outward in the radial direction to form a caulking portion 22 shown by a solid line, thereby fixing the inner ring by caulking. A predetermined preload is applied to the bearing by this caulking.

かしめ部２２の軸方向外方側端面には、軸方向に凹凸するスプライン２２ｂが形成されている。かしめ部２２に軸方向に対向する出力軸９の結合部９４の端面にも、軸方向に凹凸するスプラインが形成されて、このスプラインとスプライン２２ｂとが軸方向にスプライン結合する   A spline 22 b that is uneven in the axial direction is formed on the axially outer end face of the caulking portion 22. Splines that are concave and convex in the axial direction are also formed on the end surface of the coupling portion 94 of the output shaft 9 that faces the caulking portion 22 in the axial direction.

これにより、ピニオン軸支持用軸受装置１では、その組立ては、外輪４に玉５を装着し、ピニオン軸２を挿嵌し、内輪３をピニオン軸２に外嵌し、そして、かしめ固定して行われる。そのため、間座を必要とせずにかしめ固定により軸受に予圧を付与するので、構造が簡素化できると共に組付け性を向上することができる。   Thereby, in the bearing device 1 for supporting the pinion shaft, the assembly is performed by mounting the ball 5 on the outer ring 4, inserting the pinion shaft 2, fitting the inner ring 3 on the pinion shaft 2, and caulking and fixing. Done. Therefore, since a preload is applied to the bearing by caulking and fixing without requiring a spacer, the structure can be simplified and the assemblability can be improved.

また、ピニオン軸支持用軸受装置１では、ピニオン軸支持用軸受装置１が組み立てられて一体化されるので、例えば、トランスファー装置メーカにて、トランスファー装置に装着する場合、一体化されたピニオン軸支持用軸受装置１をケーシング８に装着するだけで良く、組付け性を向上することができる。   Further, in the pinion shaft support bearing device 1, since the pinion shaft support bearing device 1 is assembled and integrated, for example, when the transfer device manufacturer attaches to the transfer device, the integrated pinion shaft support It is only necessary to mount the bearing device 1 for the casing 8 on the casing 8, and the assembling property can be improved.

また、ピニオン軸支持用軸受装置１では、ピニオン軸２と出力軸９とが軸方向にスプライン結合するので、構造が簡素化でき、また、例えば、ピニオン軸支持用軸受装置１をトランスファー装置に装着する場合、出力軸９の圧入が不要なため、組付け性を向上することができる。   Further, in the pinion shaft support bearing device 1, the pinion shaft 2 and the output shaft 9 are splined in the axial direction, so that the structure can be simplified. For example, the pinion shaft support bearing device 1 is mounted on the transfer device. In this case, since the press fitting of the output shaft 9 is not necessary, the assembling property can be improved.

以上のように、本実施の形態に係るピニオン軸支持用軸受装置１によれば、構造を簡素化すると共に組付け性を向上することができる。   As described above, according to the pinion shaft supporting bearing device 1 according to the present embodiment, the structure can be simplified and the assemblability can be improved.

１：ピニオン軸支持用軸受装置、 ２：ピニオン軸、 ２ａ：第１内径側軌道面、 ２１：ピニオンギヤ、 ２２：かしめ部、 ２２ｂ：スプライン、 ３：内輪、 ３ａ：第２内径側軌道面、 ４：外輪、 ４ａ，４ｂ：外径側軌道面、 ５：玉、 ５１：保持器、 ６：シール部材、 ７：スリンガ、 ８：ケーシング、 ９：出力軸、 ９１：ねじ部、 ９２：ナット、 ９３：フランジ、 ９４：結合部 1: bearing device for supporting pinion shaft, 2: pinion shaft, 2a: first inner diameter raceway surface, 21: pinion gear, 22: caulking portion, 22b: spline, 3: inner ring, 3a: second inner diameter raceway surface, 4 : Outer ring, 4a, 4b: Outer diameter side raceway surface, 5: Ball, 51: Cage, 6: Sealing member, 7: Slinger, 8: Casing, 9: Output shaft, 91: Screw part, 92: Nut, 93 : Flange, 94: joint

Claims (2)

複列の外径側軌道面を有する外輪と、一端部にピニオンギヤを設け外周にピニオンギヤ側の第１内径側軌道面を有するピニオン軸と、反ピニオンギヤ側の第２内径側軌道面を有し前記ピニオン軸の他端部に外嵌される内輪と、前記外径側軌道面と前記第１内径側軌道面及び第２内径側軌道面との間に介装される複列の玉とを備え、前記ピニオン軸を回転自在に支持するピニオン軸支持用軸受装置であって、
前記ピニオン軸の他端部には、円筒状のかしめ部が形成され、
前記かしめ部を径方向外方へ屈曲させて前記内輪をかしめ固定し、このかしめ固定により軸受に予圧を付与することを特徴とするピニオン軸支持用軸受装置。 An outer ring having a double row outer diameter raceway surface, a pinion shaft having a pinion gear at one end and having a first inner diameter raceway surface on the pinion gear side, and a second inner diameter raceway surface on the anti-pinion gear side; An inner ring fitted on the other end of the pinion shaft, and a double row ball interposed between the outer diameter side raceway surface, the first inner diameter side raceway surface, and the second inner diameter side raceway surface. , A pinion shaft support bearing device for rotatably supporting the pinion shaft,
At the other end of the pinion shaft, a cylindrical caulking portion is formed,
A pinion shaft supporting bearing device characterized in that the caulking portion is bent radially outward to caulk and fix the inner ring, and preload is applied to the bearing by caulking. 前記かしめ部の軸方向外方側端面には、軸方向に凹凸するスプラインが形成され、
前記ピニオン軸と前記かしめ部に接続される出力軸とが軸方向にスプライン結合することを特徴とする請求項１に記載のピニオン軸支持用軸受装置。 On the axially outer end surface of the caulking portion, a spline that is uneven in the axial direction is formed,
The pinion shaft supporting bearing device according to claim 1, wherein the pinion shaft and the output shaft connected to the caulking portion are spline-coupled in the axial direction.
JP2012165762A 2012-07-26 2012-07-26 Pinion shaft supporting bearing device Pending JP2014025524A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111379796A (en) * 2020-03-28 2020-07-07 梅国强 Bearing coupling and directly electrically driven and power generating bearing and drive system
CN111412222A (en) * 2020-03-28 2020-07-14 梅国强 Novel interior external tooth bearing and avoid idle running bearing axle
CN111412223A (en) * 2020-03-28 2020-07-14 梅国强 Novel clutch and dynamic linkage method based on double bearings

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111379796A (en) * 2020-03-28 2020-07-07 梅国强 Bearing coupling and directly electrically driven and power generating bearing and drive system
CN111412222A (en) * 2020-03-28 2020-07-14 梅国强 Novel interior external tooth bearing and avoid idle running bearing axle
CN111412223A (en) * 2020-03-28 2020-07-14 梅国强 Novel clutch and dynamic linkage method based on double bearings
CN111412222B (en) * 2020-03-28 2022-01-11 山东凯美瑞轴承科技有限公司 Novel interior external tooth bearing and avoid idle running bearing axle
CN111379796B (en) * 2020-03-28 2022-02-22 上海拓泓机械科技有限公司 Bearing coupling and directly electrically driven and power generating bearing and drive system

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