JP2008075834A - Rolling bearing device - Google Patents

Rolling bearing device Download PDF

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JP2008075834A
JP2008075834A JP2006258463A JP2006258463A JP2008075834A JP 2008075834 A JP2008075834 A JP 2008075834A JP 2006258463 A JP2006258463 A JP 2006258463A JP 2006258463 A JP2006258463 A JP 2006258463A JP 2008075834 A JP2008075834 A JP 2008075834A
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Prior art keywords
ring
peripheral
rings
sealing
rolling bearing
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JP2006258463A
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Japanese (ja)
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Shunichi Matsui
俊一 松井
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Jtekt Corp
株式会社ジェイテクト
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Priority to JP2006258463A priority Critical patent/JP2008075834A/en
Publication of JP2008075834A publication Critical patent/JP2008075834A/en
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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
    • F16C19/00Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/34Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
    • F16C19/38Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers
    • F16C19/383Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
    • F16C19/385Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with two rows, i.e. double-row tapered roller bearings
    • F16C19/386Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with two rows, i.e. double-row tapered roller bearings in O-arrangement
    • 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
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72Sealings
    • F16C33/76Sealings of ball or roller bearings
    • F16C33/768Sealings of ball or roller bearings between relatively stationary parts, i.e. static seals
    • 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
    • F16C2326/00Articles relating to transporting
    • F16C2326/01Parts of vehicles in general
    • F16C2326/02Wheel hubs or castors

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rolling bearing device having a sealing device preventing the intrusion of foreign matter between an outer ring and two inner rings through the end faces of the two abutting inner rings and constituting the sealing device to be easily assembled. <P>SOLUTION: The rolling bearing device 1 has the outer ring 2, the two inner rings 3, and a plurality of rolling elements 4 provided between the outer ring 2 and each inner ring 3. The sealing device 6 is provided on the outer peripheral side of the abutting end faces 3a of the two inner rings 3. The sealing device 6 has a metal ring 6a comprising an annular fitting part 6a1 fitted to the outer peripheral surface of one of the inner rings 3, and a cylindrical part 6a3 continuous with the fitting part 6a1 and larger in diameter than the fitting part 6a1; and a seal lip 6b extended from the cylindrical part 6a3 of the metal ring 6a and brought into sliding contact with the outer peripheral surface of the other inner ring 3. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、転がり軸受装置に関し、例えば自動車の車輪の懸架装置に取付けられるホイール用ハブユニットの転がり軸受装置に関する。   The present invention relates to a rolling bearing device, for example, a rolling bearing device of a hub unit for a wheel attached to a suspension device for a wheel of an automobile.
従来、様々な転がり軸受装置が知られており、例えば特許文献1,2に記載の転がり軸受装置が知られている。これら転がり軸受装置は、一個の外輪と、二個の内輪と、これら外輪と内輪の間に設けられる複数の転動体を有している。そして二個の内輪の突き当てられた端面間には、これらをシールするシール部材が設けられていた。したがって二個の内輪間から泥水などが軸受内に侵入することがシール部材によって防止され、泥水の侵入による軸受内のグリースの劣化や、泥水等に含まれる異物による軸受装置の破損などが防止されていた。しかしこの転がり軸受装置は、組付け性が悪いなどの問題を有していた。
特開2001−289255号公報 特開平11−321211号公報
Conventionally, various rolling bearing devices are known. For example, the rolling bearing devices described in Patent Documents 1 and 2 are known. These rolling bearing devices have one outer ring, two inner rings, and a plurality of rolling elements provided between the outer ring and the inner ring. And between the end surfaces where the two inner rings were abutted, a sealing member for sealing them was provided. Therefore, the seal member prevents muddy water from entering the bearing between the two inner rings, preventing deterioration of the grease in the bearing due to muddy water intrusion, and damage to the bearing device due to foreign matter contained in the muddy water. It was. However, this rolling bearing device has problems such as poor assembly.
JP 2001-289255 A JP 11-321211 A
そこで本発明は、突き当てられた二個の内輪の端面間を通って外輪と内輪の間に異物が侵入することを防止する密封装置を有し、その密封装置が組付容易な構成になっている転がり軸受装置を提供することを課題とする。   Therefore, the present invention has a sealing device that prevents foreign matter from entering between the outer ring and the inner ring through the end surfaces of the two abutted inner rings, and the sealing device is configured to be easily assembled. An object of the present invention is to provide a rolling bearing device.
前記課題を解決するために本発明は、各請求項に記載の通りの構成を備える転がり軸受装置であることを特徴とする。
請求項1に記載の発明によると、二個の内輪の突き当てた端面の外周側に密封装置が設けられる。その密封装置は、内輪のいずれか一つの外周面に嵌合される環状の嵌合部と、その嵌合部から連続して嵌合部よりも径が大きい円筒部とを備える金属環と、その金属環の円筒部から延出して他方の内輪の外周面に摺接するシールリップとを有している。
In order to solve the above-described problems, the present invention is a rolling bearing device having a configuration as described in each claim.
According to invention of Claim 1, a sealing device is provided in the outer peripheral side of the end surface which the two inner rings butted. The sealing device includes an annular fitting portion fitted to any one outer peripheral surface of the inner ring, and a metal ring including a cylindrical portion having a diameter larger than the fitting portion continuously from the fitting portion, A seal lip extending from the cylindrical portion of the metal ring and in sliding contact with the outer peripheral surface of the other inner ring.
したがって密封装置は、一つの内輪の外周面に嵌合されることで、一つの内輪に組付けられる。そして他方の内輪をその内輪に突き合わせることで、他方の内輪の外周面にシールリップが摺接可能に当接する。そのため密封装置は、二つの内輪の外周側に容易に組付けられる。そして突き当てられた二個の内輪の端面間を通って外輪と内輪との間に侵入しようとするオイルや異物などの侵入を防止する。また密封装置は、金属環が内輪に嵌合されるために、安定良く内輪に組付けられる。   Therefore, the sealing device is assembled to one inner ring by being fitted to the outer peripheral surface of one inner ring. Then, the other inner ring is abutted against the inner ring, so that the seal lip contacts the outer peripheral surface of the other inner ring so as to be slidable. Therefore, the sealing device can be easily assembled on the outer peripheral side of the two inner rings. Then, oil or foreign matter that tries to enter between the outer ring and the inner ring through the end surfaces of the two abutted inner rings is prevented. Moreover, since the metal ring is fitted to the inner ring, the sealing device can be stably assembled to the inner ring.
請求項2に記載の発明によると、シールリップは、金属環を嵌合させた内輪の端面に他方の内輪の端面を突き当てる組付作業により、他方の内輪に押されて先端部が端面に向いた状態で他方の内輪の外周面に当接する構成になっている。したがってシールリップは、二個の内輪の組付作業によって確実に先端部が所望の方向に向く。そして先端部が端面側へ向くために、二個の内輪の端面間から侵入してきた異物等の軸受内への侵入を好適に防止することができる。   According to the second aspect of the present invention, the seal lip is pushed by the other inner ring by the assembling operation of abutting the end face of the other inner ring against the end face of the inner ring fitted with the metal ring, and the tip end is brought to the end face. It is the structure which contacts the outer peripheral surface of the other inner ring while facing. Therefore, the tip end portion of the seal lip is surely directed in a desired direction by assembling the two inner rings. And since the front-end | tip part faces an end surface side, the penetration | invasion into the bearing of the foreign material etc. which penetrate | invaded from between the end surfaces of two inner rings can be prevented suitably.
本発明の実施の形態を図1〜4にしたがって説明する。図1に示すように転がり軸受装置1は、トラック用の駆動輪支持装置10などに使用される。駆動輪支持装置10は、フルフローティングタイプ(全浮動式)であって、車軸管11と、車軸管11の外周面に取付けられる転がり軸受装置1と、車軸管11に挿通される駆動軸12を有している。転がり軸受装置1の外輪2の外周面には、ハブ輪15が固定される。ハブ輪15は、駆動軸12の先端部に形成されたフランジ12aとボルト14を介して固定される。   An embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the rolling bearing device 1 is used for a drive wheel support device 10 for trucks and the like. The drive wheel support device 10 is a full floating type (fully floating type), and includes an axle tube 11, a rolling bearing device 1 attached to the outer peripheral surface of the axle tube 11, and a drive shaft 12 inserted through the axle tube 11. Have. A hub ring 15 is fixed to the outer peripheral surface of the outer ring 2 of the rolling bearing device 1. The hub wheel 15 is fixed via a flange 12 a and a bolt 14 formed at the tip of the drive shaft 12.
ハブ輪15の車両側には、ブレーキロータ17が取付けられ、ハブ輪15のフランジ部には、駆動輪16が取付けられる。駆動軸12は、車軸管11を通ってデファレンシャルと連結されており、回転することで、ハブ輪15、駆動輪16、ブレーキロータ17および転がり軸受装置1の外輪2とともに回転する。   A brake rotor 17 is attached to the vehicle side of the hub wheel 15, and a drive wheel 16 is attached to a flange portion of the hub wheel 15. The drive shaft 12 is connected to the differential through the axle tube 11 and rotates together with the hub wheel 15, the drive wheel 16, the brake rotor 17, and the outer ring 2 of the rolling bearing device 1.
転がり軸受装置1は、図2に示すように一個の外輪2と、二個の内輪3と、複数の転動体4と、二個の内輪3を締結する締結環5と、二個の内輪3の外周側に設けられる密封装置6を有している。外輪2は、内周面に二列の軌道面2aを有している。内輪3は、軌道面2aに対向する外周面に軌道面3bを有している。軌道面2aと軌道面3bの間には、複数の転動体4が転動可能に設けられている。これら転動体4は、円錐ころであって、保持器7によって周方向に所定間隔で保持される。   As shown in FIG. 2, the rolling bearing device 1 includes one outer ring 2, two inner rings 3, a plurality of rolling elements 4, a fastening ring 5 that fastens the two inner rings 3, and two inner rings 3. It has the sealing device 6 provided in the outer peripheral side. The outer ring 2 has two rows of raceway surfaces 2a on the inner peripheral surface. The inner ring 3 has a raceway surface 3b on the outer peripheral surface facing the raceway surface 2a. Between the raceway surface 2a and the raceway surface 3b, the some rolling element 4 is provided so that rolling is possible. These rolling elements 4 are tapered rollers, and are held by a cage 7 at a predetermined interval in the circumferential direction.
二個の内輪3は、図2に示すように端面(内輪小端面)3a同士が突合わされる。端面3a寄りの外周面には、転動体4の小端面が摺接される小鍔3dが形成されている。内輪3の端面3a寄りの内周面には、締結環5が係合される係合部3cが形成されている。係合部3cは、内輪3の内周面に凹設されており、締結環5の係合片5bが係合される係合溝3c1を有している。そして二個の内輪3の係合部3c内に締結環5が収容される。   As shown in FIG. 2, the end faces (small inner end face) 3a of the two inner rings 3 are abutted against each other. On the outer peripheral surface near the end surface 3a, a small ridge 3d is formed on which the small end surface of the rolling element 4 is slidably contacted. An engagement portion 3c with which the fastening ring 5 is engaged is formed on the inner peripheral surface of the inner ring 3 near the end surface 3a. The engaging portion 3 c is recessed in the inner peripheral surface of the inner ring 3 and has an engaging groove 3 c 1 with which the engaging piece 5 b of the fastening ring 5 is engaged. Then, the fastening ring 5 is accommodated in the engaging portions 3 c of the two inner rings 3.
締結環5は、金属板材から形成されており、図3に示すように本体5aと、本体5aの幅方向両端から径方向外向に延出する一対の係合片5bを有している。締結環5は、円周上の一箇所に切断部を有したC字状になっている。そのため締結環5は、縮径方向に弾性変形可能であり、縮径しつつ二個の内輪3の内周側に挿入され、弾性的に拡径される。これにより一対の係合片5bが各内輪3の係合溝3c1に係合し、締結環5が二個の内輪3を内周面側から締結する。   The fastening ring 5 is formed of a metal plate material, and has a main body 5a and a pair of engagement pieces 5b extending radially outward from both widthwise ends of the main body 5a as shown in FIG. The fastening ring 5 has a C shape with a cutting part at one place on the circumference. Therefore, the fastening ring 5 can be elastically deformed in the diameter reducing direction, and is inserted into the inner peripheral side of the two inner rings 3 while being reduced in diameter, and is elastically expanded in diameter. Thereby, a pair of engagement piece 5b engages with the engagement groove 3c1 of each inner ring 3, and the fastening ring 5 fastens the two inner rings 3 from the inner peripheral surface side.
密封装置6は、図3に示すように突き当てた二個の内輪3の端面3a間を通って内輪3と外輪2の間に侵入しようとするオイルや異物などの侵入を防止する装置であって、金属製の金属環6aと、弾性材料から形成されるシールリップ6bを一体に有している。金属環6aは、内輪3の一つ(左側)の外周面に嵌合される嵌合部6a1と、嵌合部6a1の一端から径方向外方に延出する立壁部6a2と、立壁部6a2の先端から他方の内輪3へ延出する円筒状の円筒部6a3を有している。   The sealing device 6 is a device that prevents intrusion of oil, foreign matter, and the like that tries to enter between the inner ring 3 and the outer ring 2 through the end faces 3a of the two inner rings 3 abutted against each other as shown in FIG. The metal ring 6a made of metal and the seal lip 6b formed of an elastic material are integrally provided. The metal ring 6a includes a fitting portion 6a1 fitted to one (left side) outer peripheral surface of the inner ring 3, a standing wall portion 6a2 extending radially outward from one end of the fitting portion 6a1, and a standing wall portion 6a2. The cylindrical part 6a3 which extends from the tip of the other to the other inner ring 3 is provided.
嵌合部6a1は、図4に示すように内輪3の小鍔3dと端面3aの間に設けられる端部外周面3eに嵌合される。嵌合部6a1は、内輪3の小鍔3dに当たるまで挿入されて、小鍔3dによって位置決めがなされる。円筒部6a3は、径が嵌合部6a1よりも大きく、円筒部6a3と内輪3の外周面の間に隙間が形成され、その隙間にシールリップ6bが収容される。   As shown in FIG. 4, the fitting portion 6 a 1 is fitted to an end outer peripheral surface 3 e provided between the gavel 3 d of the inner ring 3 and the end surface 3 a. The fitting portion 6a1 is inserted until it hits the gavel 3d of the inner ring 3, and is positioned by the gavel 3d. The diameter of the cylindrical portion 6a3 is larger than that of the fitting portion 6a1, and a gap is formed between the cylindrical portion 6a3 and the outer peripheral surface of the inner ring 3, and the seal lip 6b is accommodated in the gap.
シールリップ6bは、弾性部材から形成されており、図3に示すようにシール部6b1と立壁部6a2とリップ部6b3を一体に有している。シール部6b1は、嵌合部6a1の一端部の内周面に形成された凹部に固着されており、嵌合部6a1と内輪3の外周面間をシールする。立壁部6a2は、立壁部6a2と円筒部6a3の内周面に渡って固着されている。リップ部6b3は、覆い部6b2の先端から他方の内輪3の外周面に延出し、他方の内輪3の外周面に摺接する。   The seal lip 6b is formed of an elastic member and integrally includes a seal portion 6b1, a standing wall portion 6a2, and a lip portion 6b3 as shown in FIG. The seal portion 6b1 is fixed to a recess formed on the inner peripheral surface of one end of the fitting portion 6a1, and seals between the fitting portion 6a1 and the outer peripheral surface of the inner ring 3. The standing wall portion 6a2 is fixed over the inner peripheral surfaces of the standing wall portion 6a2 and the cylindrical portion 6a3. The lip portion 6 b 3 extends from the tip of the cover portion 6 b 2 to the outer peripheral surface of the other inner ring 3 and is in sliding contact with the outer peripheral surface of the other inner ring 3.
リップ部6b3は、図3,4に示すように密封装置6を取付けた内輪3の端面3aに他方の内輪3の端面3aを突き当てる組付作業時によって他方の内輪3によって押される。これによりリップ部6b3は、先端部が端面3aに向き、その向きのまま先端部が他方(右側)の内輪3の外周面に摺接する。   As shown in FIGS. 3 and 4, the lip 6b3 is pushed by the other inner ring 3 during the assembly operation in which the end surface 3a of the other inner ring 3 is brought into contact with the end surface 3a of the inner ring 3 to which the sealing device 6 is attached. Thus, the tip of the lip 6b3 faces the end surface 3a, and the tip is in sliding contact with the outer peripheral surface of the other (right side) inner ring 3 in that orientation.
図2に示すように外輪2の両端部には、ゴム製のシールリング8が取付けられる。シールリング8は、外輪2の端部と内輪3の端部の間をシールして軸受内をシールする。そしてシールされた外輪2と内輪3の間にグリースが封入される。   As shown in FIG. 2, rubber seal rings 8 are attached to both ends of the outer ring 2. The seal ring 8 seals the inside of the bearing by sealing between the end of the outer ring 2 and the end of the inner ring 3. Then, grease is sealed between the sealed outer ring 2 and inner ring 3.
転がり軸受装置1の内輪3は、図1に示すように車軸管11の外周側に設置され、ボルト13によって車軸管11に取付けられる。そのため車軸管11と内輪3の間には、わずかな隙間が形成され、ルーズな嵌め合いになっている。そのため車軸管11側からデフオイルがその隙間内に流れ込んだり、外部からの泥水がその隙間内に流れ込んだりすることがある。そのためオイルや泥水や、これらに含まれている異物などが内輪3の内周側から端面3a間を通って軸受内に侵入するおそれがある。これに対して転がり軸受装置1は、密封装置6を有しており、密封装置6によって軸受内へのデフオイルや異物などの侵入を防止することができる。   As shown in FIG. 1, the inner ring 3 of the rolling bearing device 1 is installed on the outer peripheral side of the axle tube 11 and is attached to the axle tube 11 by a bolt 13. Therefore, a slight gap is formed between the axle tube 11 and the inner ring 3, and a loose fit is achieved. Therefore, differential oil may flow into the gap from the axle tube 11 side, and muddy water from the outside may flow into the gap. For this reason, there is a possibility that oil, muddy water, foreign matter contained in these, and the like may enter the bearing from the inner peripheral side of the inner ring 3 through the end surface 3a. On the other hand, the rolling bearing device 1 has a sealing device 6, and the sealing device 6 can prevent intrusion of differential oil or foreign matter into the bearing.
以上のようにして実施の形態が形成されている。すなわち図2に示すように二個の内輪3の突き当てた端面3aの外周側に密封装置6が設けられる。その密封装置6は、内輪3のいずれか一つの外周面に嵌合される環状の嵌合部6a1と、嵌合部6a1から連続して嵌合部6a1よりも径が大きい円筒部6a3とを備える金属環6aと、金属環6aの円筒部6a3から延出して他方の内輪3の外周面に摺接するシールリップ6bとを有している。   The embodiment is formed as described above. That is, as shown in FIG. 2, the sealing device 6 is provided on the outer peripheral side of the end face 3 a against which the two inner rings 3 are abutted. The sealing device 6 includes an annular fitting portion 6a1 that is fitted to any one outer peripheral surface of the inner ring 3, and a cylindrical portion 6a3 that is continuous from the fitting portion 6a1 and has a larger diameter than the fitting portion 6a1. The metal ring 6a is provided, and a seal lip 6b extending from the cylindrical portion 6a3 of the metal ring 6a and slidably contacting the outer peripheral surface of the other inner ring 3 is provided.
したがって密封装置6は、一つの内輪3の外周面に嵌合されることで、一つの内輪3に組付けられる。そして他方の内輪3をその内輪3に突き合わせることで、他方の内輪3の外周面にシールリップ6bが摺接可能に当接する。そのため密封装置6は、二つの内輪3の外周側に容易に組付けられる。そして突き当てられた二個の内輪3の端面3a間を通って外輪2と内輪3との間に侵入しようとするオイルや異物などの侵入を防止する。また密封装置6は、金属環6aが内輪3に嵌合されるために、安定良く内輪3に組付けられる。   Therefore, the sealing device 6 is assembled to one inner ring 3 by being fitted to the outer peripheral surface of one inner ring 3. Then, the other inner ring 3 is abutted against the inner ring 3, so that the seal lip 6b comes into contact with the outer peripheral surface of the other inner ring 3 so as to be slidable. Therefore, the sealing device 6 is easily assembled on the outer peripheral side of the two inner rings 3. Then, entry of oil, foreign matter, and the like that tries to enter between the outer ring 2 and the inner ring 3 through the end surfaces 3a of the two abutted inner rings 3 is prevented. Further, since the metal ring 6 a is fitted to the inner ring 3, the sealing device 6 is stably assembled to the inner ring 3.
またシールリップ6bは、図3に示すように金属環6aを嵌合させた内輪3の端面3aに他方の内輪3の端面3aを突き当てる組付作業により、他方の内輪3に押されて先端部が端面3aに向いた状態で他方の内輪3の外周面に当接する構成になっている。したがってシールリップ6bは、二個の内輪3の組付作業によって確実に先端部が所望の方向に向く。そして先端部が端面3aに向くために、二個の内輪3の端面3a間から侵入してきた異物等の軸受内への侵入を好適に防止することができる。   Further, as shown in FIG. 3, the seal lip 6b is pushed by the other inner ring 3 by the assembling operation of abutting the end surface 3a of the other inner ring 3 against the end surface 3a of the inner ring 3 fitted with the metal ring 6a. It is configured to contact the outer peripheral surface of the other inner ring 3 with the portion facing the end surface 3a. Therefore, the tip of the seal lip 6b is surely directed in a desired direction by the assembling work of the two inner rings 3. And since a front-end | tip part faces the end surface 3a, the penetration | invasion into the bearing of the foreign material etc. which penetrate | invaded from between the end surfaces 3a of the two inner rings 3 can be prevented suitably.
(他の実施の形態)
本発明は、上記実施の形態に限定されず、以下の形態であっても良い。
(1)例えば上記実施の形態の転がり軸受装置1は、締結環5を有していたが、締結環5を有していない形態であっても良い。
(2)上記実施の形態の密封装置6のシールリップ6bは、シール部6b1と覆い部6b2とリップ部6b3を有していた。しかし覆い部を有さず、シール部とリップ部を別々に有している形態であっても良い。
(3)上記実施の形態の転がり軸受装置1は、転動体4として円錐ころを有していた。しかし転動体として円柱ころや球を有している形態であっても良い。
(4)上記実施の形態の転がり軸受装置1は、トラック用の駆動輪支持装置10に利用されていたが、他の車両用部品あるいは産業用部品に利用される転がり軸受装置であっても良い。
(Other embodiments)
The present invention is not limited to the above-described embodiment, and may be the following form.
(1) For example, the rolling bearing device 1 of the above embodiment has the fastening ring 5, but may have a form without the fastening ring 5.
(2) The seal lip 6b of the sealing device 6 of the above embodiment has the seal portion 6b1, the cover portion 6b2, and the lip portion 6b3. However, it may have a form in which the cover part is not provided and the seal part and the lip part are separately provided.
(3) The rolling bearing device 1 of the above embodiment has a tapered roller as the rolling element 4. However, it may be a form having cylindrical rollers or balls as rolling elements.
(4) Although the rolling bearing device 1 of the above-described embodiment has been used in the drive wheel support device 10 for trucks, it may be a rolling bearing device used for other vehicle parts or industrial parts. .
駆動輪支持装置の断面図である。It is sectional drawing of a driving wheel support apparatus. 転がり軸受装置の一部断面図である。It is a partial sectional view of a rolling bearing device. 密封装置近傍における転がり軸受装置の一部拡大断面図である。It is a partially expanded sectional view of the rolling bearing device in the vicinity of the sealing device. 密封装置の組付けの様子を示す密封装置近傍における転がり軸受装置の一部拡大断面図である。It is a partially expanded sectional view of the rolling bearing device in the vicinity of the sealing device showing the state of assembly of the sealing device.
符号の説明Explanation of symbols
1・・・転がり軸受装置
2・・・外輪
2a,3b・・・軌道面
3・・・内輪
3a・・・端面
4・・・転動体
5・・・締結環
6b・・・シールリップ
6・・・密封装置
6a1・・・嵌合部
6a・・・金属環
10・・・駆動輪支持装置
11・・・車軸管
12・・・駆動軸

DESCRIPTION OF SYMBOLS 1 ... Rolling bearing apparatus 2 ... Outer ring 2a, 3b ... Race surface 3 ... Inner ring 3a ... End surface 4 ... Rolling element 5 ... Fastening ring 6b ... Seal lip 6 ..Sealing device 6a1 ... Fitting portion 6a ... Metal ring 10 ... Drive wheel support device 11 ... Axle tube 12 ... Drive shaft

Claims (2)

  1. 内周面に二列の軌道面を有する外輪と、外輪の各軌道面に対向する軌道面を外周面に有する二個の内輪と、前記外輪と前記各内輪の軌道面間に設けられる複数の転動体とを有する転がり軸受装置であって、
    前記二個の内輪の突き当てた端面の外周側に密封装置が設けられ、その密封装置は、前記内輪のいずれか一つの外周面に嵌合される環状の嵌合部と、その嵌合部から連続して前記嵌合部よりも径が大きい円筒部とを備える金属環と、その金属環の円筒部から延出して他方の内輪の外周面に摺接するシールリップとを有していることを特徴とする転がり軸受装置。
    An outer ring having two rows of raceway surfaces on the inner circumferential surface, two inner rings having a raceway surface facing each raceway surface of the outer ring on the outer circumferential surface, and a plurality of rings provided between the raceways of the outer ring and each inner ring A rolling bearing device having rolling elements,
    A sealing device is provided on the outer peripheral side of the end surfaces against which the two inner rings are abutted, and the sealing device includes an annular fitting portion that is fitted to any one outer peripheral surface of the inner ring, and the fitting portion. A metal ring having a cylindrical portion continuously larger than the fitting portion and a seal lip extending from the cylindrical portion of the metal ring and slidably contacting the outer peripheral surface of the other inner ring. A rolling bearing device characterized by.
  2. 請求項1に記載の転がり軸受装置であって、
    シールリップは、金属環を嵌合させた内輪の端面に他方の内輪の端面を突き当てる組付作業により、前記他方の内輪に押されて先端部が前記端面に向いた状態で前記他方の内輪の外周面に当接する構成になっていることを特徴とする転がり軸受装置。

    The rolling bearing device according to claim 1,
    The seal lip is pushed by the other inner ring by the assembling operation of abutting the end surface of the other inner ring against the end surface of the inner ring fitted with the metal ring, and the other inner ring is in a state where the tip portion faces the end surface. A rolling bearing device characterized by being configured to abut against the outer peripheral surface of the roller bearing.

JP2006258463A 2006-09-25 2006-09-25 Rolling bearing device Pending JP2008075834A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006258463A JP2008075834A (en) 2006-09-25 2006-09-25 Rolling bearing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006258463A JP2008075834A (en) 2006-09-25 2006-09-25 Rolling bearing device

Publications (1)

Publication Number Publication Date
JP2008075834A true JP2008075834A (en) 2008-04-03

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ID=39348113

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006258463A Pending JP2008075834A (en) 2006-09-25 2006-09-25 Rolling bearing device

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Country Link
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010025216A (en) * 2008-07-18 2010-02-04 Ntn Corp Drive wheel supporting device
JP2011148409A (en) * 2010-01-22 2011-08-04 Ntn Corp Bearing device for wheel
US8575847B2 (en) 2010-04-23 2013-11-05 On Semiconductor Trading, Ltd. Control circuit of light-emitting element
CN106499734A (en) * 2015-09-03 2017-03-15 斯凯孚公司 Sealing device for roller bearing unit
CN106949147A (en) * 2015-10-16 2017-07-14 斯凯孚公司 Bearing assembled unit and sealing device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010025216A (en) * 2008-07-18 2010-02-04 Ntn Corp Drive wheel supporting device
JP2011148409A (en) * 2010-01-22 2011-08-04 Ntn Corp Bearing device for wheel
US8575847B2 (en) 2010-04-23 2013-11-05 On Semiconductor Trading, Ltd. Control circuit of light-emitting element
CN106499734A (en) * 2015-09-03 2017-03-15 斯凯孚公司 Sealing device for roller bearing unit
CN106499734B (en) * 2015-09-03 2019-10-08 斯凯孚公司 Sealing device for roller bearing unit
CN106949147A (en) * 2015-10-16 2017-07-14 斯凯孚公司 Bearing assembled unit and sealing device

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