JP2002039195A - Hub unit for vehicle - Google Patents

Hub unit for vehicle

Info

Publication number
JP2002039195A
JP2002039195A JP2000230321A JP2000230321A JP2002039195A JP 2002039195 A JP2002039195 A JP 2002039195A JP 2000230321 A JP2000230321 A JP 2000230321A JP 2000230321 A JP2000230321 A JP 2000230321A JP 2002039195 A JP2002039195 A JP 2002039195A
Authority
JP
Japan
Prior art keywords
rolling bearing
double row
row rolling
vehicle
lip
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2000230321A
Other languages
Japanese (ja)
Inventor
Shunichi Matsui
俊一 松井
Kazutoshi Yamamoto
和俊 山本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koyo Seiko Co Ltd
Original Assignee
Koyo Seiko Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koyo Seiko Co Ltd filed Critical Koyo Seiko Co Ltd
Priority to JP2000230321A priority Critical patent/JP2002039195A/en
Publication of JP2002039195A publication Critical patent/JP2002039195A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/66—Special parts or details in view of lubrication
    • F16C33/6696—Special parts or details in view of lubrication with solids as lubricant, e.g. dry coatings, powder
    • 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
    • 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7869—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward
    • F16C33/7873—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward with a single sealing ring of generally L-shaped cross-section
    • F16C33/7876—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward with a single sealing ring of generally L-shaped cross-section with sealing lips
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7869—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward
    • F16C33/7879—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward with a further sealing ring
    • F16C33/7883—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward with a further sealing ring mounted to the inner race and of generally L-shape, the two sealing rings defining a sealing with box-shaped cross-section

Landscapes

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

Abstract

PROBLEM TO BE SOLVED: To take inexpensive measures to reduce sliding resistance during the initial stage of operation of a sealing device provided in a double row rolling bearing of a hub unit for a vehicle. SOLUTION: In the hub unit for a vehicle, in which the double row rolling bearing 2 is mounted to a hub wheel 1, sealing devices 8 and 9 are mounted at both axial ends of the rolling bearing 2 and a lubricant 10 is applied to the surfaces of rubber lips 82 to 84 and 91b to 91d provided in the sealing devices 8 and 9. Thus, the sliding resistance of the lips during the initial stage of operation is reduced, without this reduction becoming excessive.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、自動車などの車両
におけるディスクブレーキ装置のディスクロータや車輪
が取り付けられる車両用ハブユニットに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hub unit for a vehicle to which a disk rotor and wheels of a disk brake device in a vehicle such as an automobile are attached.

【０００２】[0002]

【従来の技術】一般的に、車両用ハブユニットは、自動
車などの車両の駆動輪側に用いるタイプと、従動輪側に
用いるタイプとに大別される。2. Description of the Related Art Generally, a hub unit for a vehicle is roughly classified into a type used on a driving wheel side of a vehicle such as an automobile and a type used on a driven wheel side.

【０００３】これらいずれのタイプでも、ハブホイール
の外周に取り付けられる複列転がり軸受は、その軸方向
両端に密封装置を装着することにより、内部の潤滑剤の
漏洩と外部からかかる泥水などの水分の侵入を防止する
ようになっている。[0003] In any of these types, the double row rolling bearing mounted on the outer periphery of the hub wheel is provided with sealing devices at both ends in the axial direction to prevent leakage of the internal lubricant and moisture from the outside such as muddy water. It is designed to prevent intrusion.

【０００４】この密封装置については、いろいろなタイ
プのものが利用されるが、通常、環状芯金に対してゴム
製のリップを被着した一般的なシールリングが利用され
る。Various types of sealing devices are used, and generally, a general sealing ring in which a rubber lip is attached to an annular cored bar is used.

【０００５】[0005]

【発明が解決しようとする課題】上記従来例の車両用ハ
ブユニットでは、密封装置のリップによる摺動抵抗や複
列転がり軸受内部の潤滑剤の粘度などにより、初期回転
トルクが最も高い。しかし、時間経過に伴い複列転がり
軸受内部の潤滑剤の粘度が低下し、それがリップの摺動
部位に対して微量ずつながらも供給されることによっ
て、またはリップ部のなじみや摩耗により、回転トルク
が低下傾向となる。In the above-mentioned conventional vehicle hub unit, the initial rotational torque is highest due to the sliding resistance due to the lip of the sealing device and the viscosity of the lubricant inside the double row rolling bearing. However, as time passes, the viscosity of the lubricant inside the double row rolling bearing decreases, and the lubricant is supplied to the sliding part of the lip in small amounts, or because of the familiarity or wear of the lip part. The torque tends to decrease.

【０００６】これに対して本願出願人は、リップの摺動
面に対して潤滑膜をコーティングすることを考えたが、
上述したように初期の回転トルクを軽減させればよいに
もかかわらず、上述したようなコーティングという手間
のかかる処理を施すのは、コストが嵩みすぎるなど、過
剰であり、得策ではないと考えた。On the other hand, the present applicant has considered coating a lubricating film on the sliding surface of the lip.
Despite having to reduce the initial rotation torque as described above, it is considered that applying the complicated process of coating as described above is excessive, such as excessive cost, and is not a good idea. Was.

【０００７】そこで、本願出願人は、複列転がり軸受に
用いる密封装置のリップによる稼動初期の摺動抵抗を安
価な対策で低減するための工夫が必要であると考え、本
発明を想到するに至った。The applicant of the present invention considers that it is necessary to devise an inexpensive measure to reduce the sliding resistance at the initial operation due to the lip of the sealing device used for the double-row rolling bearing, and to devise the present invention. Reached.

【０００８】[0008]

【課題を解決するための手段】本発明第一の車両用ハブ
ユニットは、ハブホイールの外周に複列転がり軸受が取
り付けられていて、ハブホイールに一体形成される径方
向外向きのフランジの外面にディスクブレーキ装置のデ
ィスクロータや車輪があてがわれた状態で取り付けられ
るもので、前記複列転がり軸受の軸方向両端に密封装置
が装着されており、この密封装置に備えるゴム製のリッ
プの表面に、潤滑剤が塗布されている、ことを特徴とし
ている。According to a first aspect of the present invention, there is provided a hub unit for a vehicle, wherein a double row rolling bearing is mounted on an outer periphery of a hub wheel, and an outer surface of a radially outwardly facing flange integrally formed with the hub wheel. The disk rotor and wheels of the disk brake device are attached to the double row rolling bearing, and sealing devices are mounted on both ends in the axial direction of the double row rolling bearing. The surface of a rubber lip provided in the sealing device , A lubricant is applied thereto.

【０００９】本発明第二の車両用ハブユニットは、ハブ
ホイールの外周に複列転がり軸受が、また、ハブホイー
ルに対して前記複列転がり軸受と近接した状態で等速ジ
ョイントがそれぞれ取り付けられていて、ハブホイール
に一体形成される径方向外向きのフランジの外面にディ
スクブレーキ装置のディスクロータや車輪があてがわれ
た状態で取り付けられるもので、前記複列転がり軸受の
軸方向両端に密封装置が装着されており、この密封装置
に備えるゴム製のリップの表面に、潤滑剤が塗布されて
いる、ことを特徴としている。In the second vehicle hub unit of the present invention, a double row rolling bearing is mounted on the outer periphery of the hub wheel, and a constant velocity joint is mounted on the hub wheel in a state close to the double row rolling bearing. A disk rotor or a wheel of a disk brake device is mounted on an outer surface of a radially outward flange formed integrally with the hub wheel, and sealing devices are provided at both axial ends of the double row rolling bearing. And a lubricant is applied to a surface of a rubber lip provided in the sealing device.

【００１０】本発明第三の車両用ハブユニットは、上記
第一または第二の構成において、前記密封装置が、環状
芯金に対してリップを被着したシールリング単体からな
り、前記環状芯金が複列転がり軸受の外輪要素に対して
固定状態で取り付けられて、前記リップが複列転がり軸
受の内輪要素に対して接触させられて接触密封部を形成
するものである、ことを特徴としている。In a third vehicle hub unit according to the present invention, in the first or second configuration, the sealing device comprises a seal ring alone having a lip attached to an annular core, and Are fixedly attached to the outer ring element of the double row rolling bearing, and the lip is brought into contact with the inner ring element of the double row rolling bearing to form a contact sealing portion. .

【００１１】本発明第四の車両用ハブユニットは、上記
第一または第二の構成において、前記密封装置が、環状
芯金に対してリップを被着してなるシールリングと、こ
のシールリングのリップが接触させられて接触密封部を
形成するスリンガーとを組み合わせた構成であり、前記
シールリングの環状芯金が複列転がり軸受の外輪要素に
対して、また、前記スリンガーが複列転がり軸受の内輪
要素に対してそれぞれ固定状態で取り付けられるもので
ある、ことを特徴としている。According to a fourth aspect of the present invention, there is provided a vehicle hub unit according to the first or second configuration, wherein the sealing device has a seal ring formed by attaching a lip to an annular core, and a seal ring of the seal ring. A lip is brought into contact with a slinger to form a contact sealing portion, wherein the annular core of the seal ring is provided for the outer race element of the double row rolling bearing, and the slinger is provided for the double row rolling bearing. It is characterized by being fixedly attached to the inner ring element.

【００１２】要するに、本発明では、複列転がり軸受に
装着される密封装置のリップに対して潤滑剤を塗布する
だけの簡単かつ低コストの対策を施すようにしており、
それによってリップの稼動初期における摩擦係数が十分
に下げられる。これにより、稼動初期における摺動抵抗
が軽減されるとともに、リップの摺動部位の発熱が抑制
される。そして、時間経過に伴う前記リップの摺動部位
における滑性は複列転がり軸受内部の潤滑剤により継続
される。In short, according to the present invention, a simple and low-cost countermeasure such as applying a lubricant to a lip of a sealing device mounted on a double row rolling bearing is provided.
As a result, the coefficient of friction in the initial operation of the lip is sufficiently reduced. Thereby, the sliding resistance in the initial stage of operation is reduced, and the heat generation at the sliding portion of the lip is suppressed. The lubrication of the sliding portion of the lip with the passage of time is continued by the lubricant inside the double row rolling bearing.

【００１３】特に、本発明第二の構成のように、複列転
がり軸受だけでなく等速ジョイントを有していて、両者
の発熱が相互に作用して昇温しやすいような場合だと、
上述したように複列転がり軸受の発熱が抑制されること
に伴い、ハブユニット全体の昇温が抑制されることにな
る。[0013] In particular, as in the second configuration of the present invention, when there is not only a double row rolling bearing but also a constant velocity joint, and the heat generated by the two components interacts to increase the temperature,
As described above, as the heat generation of the double row rolling bearing is suppressed, the temperature rise of the entire hub unit is suppressed.

【００１４】[0014]

【発明の実施の形態】本発明の詳細を図面に示す実施形
態に基づいて説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described based on embodiments shown in the drawings.

【００１５】図１ないし図３は本発明の一実施形態を示
している。図１は、車両用ハブユニットを示す断面図、
図２は、図１の（２）部位の拡大図、図３は、図１の
（３）部位の拡大図である。1 to 3 show an embodiment of the present invention. FIG. 1 is a sectional view showing a vehicle hub unit.
FIG. 2 is an enlarged view of a portion (2) in FIG. 1, and FIG. 3 is an enlarged view of a portion (3) in FIG.

【００１６】図例の車両用ハブユニットは、自動車の駆
動輪側に使用されるタイプであって、ハブホイール１
と、複列転がり軸受２と、等速ジョイント３とを備えて
いる。The illustrated vehicle hub unit is of a type used on the driving wheel side of an automobile, and includes a hub wheel 1.
, A double row rolling bearing 2 and a constant velocity joint 3.

【００１７】ハブホイール１は、中空構造となってお
り、その外周面の軸方向中間部には径方向外向きのフラ
ンジ１１が形成され、また、中空部内周面の所要領域に
はメススプライン（図示省略）が形成され、外周面の内
端部寄りには複列転がり軸受２における片方列の玉２２
群の軌道面１２が形成された構成となっている。The hub wheel 1 has a hollow structure, and a radially outward flange 11 is formed at an axially intermediate portion of an outer peripheral surface thereof. (Not shown), and a single row of balls 22 in the double row rolling bearing 2 is provided near the inner end of the outer peripheral surface.
The configuration is such that a group raceway surface 12 is formed.

【００１８】複列転がり軸受２は、二列の軌道溝を有す
る単一の外輪２１と、二列で配設される転動体としての
複数の玉２２と、二つの冠形保持器２３とから構成され
ており、本来必要な２つの内輪については、一方は上述
したようにハブホイール１の軌道面を利用し、他方の内
輪２４のみを備えた構成となっている。The double row rolling bearing 2 comprises a single outer ring 21 having two rows of raceway grooves, a plurality of balls 22 as rolling elements arranged in two rows, and two crowned cages 23. As for the two inner rings that are originally required, one uses the raceway surface of the hub wheel 1 as described above, and only the other inner ring 24 is provided.

【００１９】等速ジョイント３は、周知のツェッパタイ
プ（バーフィールド型）の等速ジョイントと呼ばれるも
のとされ、外輪３１、内輪３２、玉３３および保持器３
４などから構成されている。外輪３１は、内輪３２、玉
３３および保持器３４などが収納配設される椀形部３５
と、この椀形部３５の小径側に一体に連接される軸部３
６とから構成されている。The constant velocity joint 3 is a so-called zeppa type (Barfield type) constant velocity joint. The constant velocity joint 3 includes an outer ring 31, an inner ring 32, a ball 33 and a cage 3.
4 and the like. The outer ring 31 has a bowl-shaped portion 35 in which the inner ring 32, the ball 33, the retainer 34 and the like are housed and arranged.
And a shaft portion 3 integrally connected to the small diameter side of the bowl-shaped portion 35.
6 is comprised.

【００２０】そして、上記ハブホイール１の外周面に複
列転がり軸受２を取り付けると共にハブホイール１に対
して複列転がり軸受２と近接した状態で等速ジョイント
３を取り付ける。なお、等速ジョイント３を必要に応じ
てハブホイール１から分離できるようにするために、等
速ジョイント３の外輪３１における軸部３６をハブホイ
ール１の内周に対してスプライン嵌合し、さらに、等速
ジョイント３の軸部３６の軸端側の外周に装着されるＣ
形止め輪３７を、ハブホイール１の中空部においてわず
かに拡径された部位の段差に対して軸方向で引っ掛ける
形態とすることにより、ハブホイール１に対して等速ジ
ョイント３の外輪３１を結合している。A double row rolling bearing 2 is mounted on the outer peripheral surface of the hub wheel 1 and a constant velocity joint 3 is mounted on the hub wheel 1 in a state of being close to the double row rolling bearing 2. In order to separate the constant velocity joint 3 from the hub wheel 1 as necessary, the shaft portion 36 of the outer ring 31 of the constant velocity joint 3 is spline-fitted to the inner periphery of the hub wheel 1, and Attached to the outer periphery of the shaft end side of the shaft portion 36 of the constant velocity joint 3
The outer ring 31 of the constant velocity joint 3 is connected to the hub wheel 1 by forming the retaining ring 37 so as to be hooked in the axial direction with respect to a step of a slightly enlarged portion in the hollow portion of the hub wheel 1. are doing.

【００２１】また、ハブホイール１のフランジ１１に対
してディスクブレーキ装置のディスクロータ４および車
輪（図示省略）があてがわれて複数のボルト１３により
装着される。また、複列転がり軸受２の外輪２１に設け
てある径方向外向きのフランジ２５が、車体５などにボ
ルト止めされる。さらに、等速ジョイント３の内輪３２
に対してシャフト６がスプライン嵌合されて止め輪３８
などで抜け止め固定される。前述のシャフト６の他端側
は、図示しない別の等速ジョイントを介して車両のデフ
ァレンシャル装置に取り付けられる。なお、７はブレー
キパッドである。The disk rotor 4 and the wheels (not shown) of the disk brake device are applied to the flange 11 of the hub wheel 1 and mounted with a plurality of bolts 13. A radially outward flange 25 provided on the outer race 21 of the double row rolling bearing 2 is bolted to the vehicle body 5 or the like. Further, the inner ring 32 of the constant velocity joint 3
The shaft 6 is spline-fitted to the
It is fixed by retaining. The other end of the shaft 6 is attached to a differential device of the vehicle via another constant velocity joint (not shown). In addition, 7 is a brake pad.

【００２２】このような車両用ハブユニットでは、シャ
フト６の回転動力が、等速ジョイント３を介してハブホ
イール１に取り付けられてある車輪（図示省略）に対し
て伝達される。In such a vehicle hub unit, the rotational power of the shaft 6 is transmitted to the wheels (not shown) attached to the hub wheel 1 via the constant velocity joint 3.

【００２３】なお、上記複列転がり軸受２の軸方向両端
には、内部の潤滑剤の漏洩を防止するとともに、外部か
らの水分の侵入を防止するために、密封装置８，９が振
り分けられて装着されている。Sealing devices 8 and 9 are distributed to both ends of the double row rolling bearing 2 in the axial direction in order to prevent leakage of the internal lubricant and to prevent intrusion of moisture from the outside. It is installed.

【００２４】これら２つの密封装置８，９は、図２およ
び図３に示すように、異なる構成になっている。The two sealing devices 8 and 9 have different configurations as shown in FIGS.

【００２５】まず、車両アウタ側の密封装置８は、図２
に示すように、環状芯金８１に対して２つのラジアルリ
ップ８２，８３と１つのアキシャルリップ８４とを被着
したシールリング単体からなる。この環状芯金８１が複
列転がり軸受２の外輪２１の内周面に対して圧入により
嵌合固定されていて、３つのリップ８２〜８４がハブホ
イール１の軌道面１２に対して接触させられて接触密封
部を形成するようになっている。このうち、２つのラジ
アルリップ８２，８３とハブホイール１の軌道面１２と
で形成する環状空間には、グリースなどの潤滑剤が封入
されている。First, the sealing device 8 on the vehicle outer side is shown in FIG.
As shown in the figure, the seal ring is made up of a single seal ring in which two radial lips 82 and 83 and one axial lip 84 are attached to an annular core 81. The annular core 81 is fitted and fixed to the inner peripheral surface of the outer race 21 of the double row rolling bearing 2 by press-fitting, and the three lips 82 to 84 are brought into contact with the raceway surface 12 of the hub wheel 1. To form a contact seal. Of these, a lubricant such as grease is sealed in an annular space formed by the two radial lips 82 and 83 and the raceway surface 12 of the hub wheel 1.

【００２６】一方、車両インナ側の密封装置９は、シー
ルリング９１と、スリンガー９２とを組み合わせた構成
である。シールリング９１は、環状芯金９１ａに対して
２つのラジアルリップ９１ｂ，９１ｃと１つのアキシャ
ルリップ９１ｄを被着した構成であり、複列転がり軸受
２の外輪２１の内周面に対して圧入により嵌合固定され
ている。スリンガー９２は、円筒部９２ａの軸方向一端
に径方向外向きの環状板部９２ｂを屈曲形成した金属材
からなり、円筒部９２ａが複列転がり軸受２の単一の内
輪２４の反カウンタボア側外周面に対して圧入により嵌
合固定されている。シールリング９１の３つのリップ９
１ｂ〜９１ｄがスリンガー９２の円筒部９２ａおよび環
状板部９２ｂに対して接触させられて接触密封部を形成
するようになっている。このうち、２つのラジアルリッ
プ９１ｂ，９１ｃとスリンガー９２の円筒部９２ａとで
形成する環状空間および、三角形状のラジアルリップ９
１ｂとアキシャルリップ９１ｄとスリンガー９２の環状
板部９２ｂとで形成する環状空間には、それぞれグリー
スなどの潤滑剤が封入されている。On the other hand, the sealing device 9 on the vehicle inner side has a configuration in which a seal ring 91 and a slinger 92 are combined. The seal ring 91 has a configuration in which two radial lips 91b and 91c and one axial lip 91d are attached to an annular cored bar 91a, and is pressed into the inner peripheral surface of the outer ring 21 of the double row rolling bearing 2. Fitted and fixed. The slinger 92 is made of a metal material in which a radially outwardly extending annular plate portion 92b is bent at one end in the axial direction of the cylindrical portion 92a, and the cylindrical portion 92a is opposite to the counter bore side of the single inner ring 24 of the double row rolling bearing 2. It is fitted and fixed to the outer peripheral surface by press fitting. Three lips 9 of seal ring 91
1b to 91d are brought into contact with the cylindrical portion 92a and the annular plate portion 92b of the slinger 92 to form a contact sealing portion. Among them, an annular space formed by two radial lips 91b and 91c and the cylindrical portion 92a of the slinger 92, and a triangular radial lip 9
A lubricant such as grease is sealed in each of the annular spaces formed by 1b, the axial lip 91d, and the annular plate portion 92b of the slinger 92.

【００２７】この実施形態では、上記２つの密封装置
８，９に備えるすべてのゴム製のリップ８２〜８４，９
１ｂ〜９１ｄの表面に対して、潤滑剤１０が塗布されて
いる、ことに特徴がある。In this embodiment, all the rubber lips 82 to 84, 9 provided in the two sealing devices 8, 9 are used.
It is characterized in that the lubricant 10 is applied to the surfaces 1b to 91d.

【００２８】なお、潤滑剤１０は、例えばふっ素系樹脂
あるいは、グラファイトや二硫化モリブデンなどを含有
した合成樹脂などが挙げられる。The lubricant 10 is, for example, a fluorine resin or a synthetic resin containing graphite, molybdenum disulfide, or the like.

【００２９】そして、上記潤滑剤１０の塗布方法として
は、上記適宜の材料を液状にして貯溜した貯溜槽に対し
て、車両アウタ側の密封装置８と車両インナ側の密封装
置９のシールリング９１とを浸漬するだけで、あとは放
置して自然乾燥させる形態にしている。これにより、リ
ップ８２〜８４，９１ｂ〜９１ｄの表面に潤滑剤１０が
膜状に形成される。The method for applying the lubricant 10 is as follows. A seal tank 91 of the sealing device 8 on the vehicle outer side and the sealing device 9 on the vehicle inner side is applied to a storage tank in which the appropriate material is stored in a liquid state. Is simply immersed, and the rest is left to dry naturally. Thereby, the lubricant 10 is formed in a film shape on the surfaces of the lips 82 to 84 and 91b to 91d.

【００３０】このように、簡易かつ安価な方法でリップ
８２〜８４，９１ｂ〜９１ｄの滑性を高めるように対策
している。これにより、ハブホイール１の稼動初期にお
いて、密封装置８，９のリップ８２〜８４，９１ｂ〜９
１ｄの摩擦係数が十分に下げられることになるので、稼
動初期における摺動抵抗が軽減されるとともに、リップ
８２〜８４，９１ｂ〜９１ｄの摺動部位の発熱が抑制さ
れる。そして、時間経過に伴う前記リップ８２〜８４，
９１ｂ〜９１ｄの摺動部位における滑性は当該リップ間
に収納した潤滑剤や複列転がり軸受２内部の潤滑剤によ
り継続される。したがって、複列転がり軸受２に使用す
るグリースなどの潤滑剤が従来例のように予想以上に早
く熱劣化するということもなくなり、長期にわたって良
好な潤滑作用が発揮するようになるから、結果的に複列
転がり軸受２が設計どおりの寿命を達成できるようにな
る。As described above, measures are taken to increase the slipperiness of the lips 82 to 84 and 91b to 91d by a simple and inexpensive method. As a result, in the initial stage of operation of the hub wheel 1, the lips 82 to 84, 91b to 9 of the sealing devices 8, 9 are formed.
Since the friction coefficient of 1d is sufficiently reduced, the sliding resistance in the initial stage of operation is reduced, and heat generation at the sliding portions of the lips 82 to 84 and 91b to 91d is suppressed. Then, the lips 82 to 84,
The lubrication at the sliding portions 91b to 91d is continued by the lubricant housed between the lips and the lubricant inside the double row rolling bearing 2. Therefore, the lubricant such as grease used for the double-row rolling bearing 2 does not deteriorate faster than expected as in the conventional example, and a good lubricating action can be exhibited for a long time. The double row rolling bearing 2 can achieve the designed life.

【００３１】特に、上記実施形態で示した構成のよう
に、複列転がり軸受２だけでなく等速ジョイント３を有
していて、両者の発熱が相互に作用して昇温しやすいよ
うな場合だと、上述したように複列転がり軸受２の発熱
が抑制されることに伴い、ハブユニット全体の昇温が抑
制されることになり、有利である。In particular, as in the configuration shown in the above embodiment, in the case where there is provided not only the double row rolling bearing 2 but also the constant velocity joint 3, the heat generated by the both interacts to easily raise the temperature. This is advantageous because the heat generation of the double row rolling bearing 2 is suppressed as described above, and the temperature rise of the entire hub unit is suppressed.

【００３２】なお、本発明は、上述した実施形態のみに
限定されるものではなく、いろいろな応用や変形が考え
られる。It should be noted that the present invention is not limited to only the above-described embodiment, and various applications and modifications are conceivable.

【００３３】（１）上記実施形態において、ハブホイー
ル１と等速ジョイント３の軸部３６とをスプライン嵌合
している例を示したが、例えば両者を圧入して軸部３６
の軸端をハブホイール１の端面に対してかしめつける構
造や、例えば両者を嵌合して軸部３６の軸端にナットを
螺合してハブホイールの端面に締め付ける構造などとし
たものにも本発明を適用できる。(1) In the above embodiment, an example is shown in which the hub wheel 1 and the shaft portion 36 of the constant velocity joint 3 are spline-fitted.
And a structure in which the two are fitted together and a nut is screwed into the shaft end of the shaft portion 36 and tightened to the end surface of the hub wheel. The present invention can be applied.

【００３４】（２）上記実施形態では、等速ジョイント
３を装備した車両用ハブユニットを例示したが、等速ジ
ョイント３を備えていないタイプの車両用ハブユニット
についても本発明を適用できる。(2) In the above embodiment, the vehicle hub unit provided with the constant velocity joint 3 has been exemplified. However, the present invention can be applied to a vehicle hub unit having no constant velocity joint 3.

【００３５】[0035]

【発明の効果】請求項１ないし４の発明では、複列転が
り軸受に装着される密封装置のリップに対して潤滑剤を
塗布するだけの簡単かつ低コストの対策を講じることに
よって、無駄を無くしたうえで、リップの稼動初期にお
ける摩擦係数を下げることができるから、稼動初期にお
ける密封装置の摺動抵抗が軽減されて複列転がり軸受の
回転トルクが軽減されることになるうえ、密封装置のリ
ップからの発熱が抑制されて複列転がり軸受の内部に使
用される潤滑剤が早期段階で熱劣化することなく、長期
にわたって良好な潤滑作用が期待できるから、複列転が
り軸受の寿命向上が可能となり、結果的に車両用ハブユ
ニットの信頼性向上に貢献できる。According to the first to fourth aspects of the present invention, waste is eliminated by taking a simple and low-cost measure of merely applying a lubricant to a lip of a sealing device mounted on a double row rolling bearing. In addition, since the coefficient of friction in the initial operation of the lip can be reduced, the sliding resistance of the sealing device in the initial operation is reduced, the rotational torque of the double row rolling bearing is reduced, and the The heat generated from the lip is suppressed and the lubricant used inside the double row rolling bearing does not deteriorate at an early stage, and a good lubrication effect can be expected for a long time, so the life of the double row rolling bearing can be extended. As a result, the reliability of the vehicle hub unit can be improved.

【００３６】特に、請求項２の構成のように、複列転が
り軸受だけでなく等速ジョイントを有していて、両者の
発熱が相互に作用して昇温しやすいような場合だと、上
述したように複列転がり軸受の発熱が抑制されることに
伴い、ハブユニット全体の昇温が抑制されることにな
る。In particular, as in the case of the construction of claim 2, when there is not only a double-row rolling bearing but also a constant velocity joint, and the heat generated by the two interacts to easily raise the temperature, As described above, as the heat generation of the double row rolling bearing is suppressed, the temperature rise of the entire hub unit is suppressed.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明の一実施形態に係る車両用ハブユニット
を示す断面図FIG. 1 is a sectional view showing a vehicle hub unit according to an embodiment of the present invention.

【図２】図１の（２）部位の拡大図FIG. 2 is an enlarged view of a portion (2) in FIG. 1;

【図３】図１の（３）部位の拡大図FIG. 3 is an enlarged view of a portion (3) in FIG. 1;

【符号の説明】[Explanation of symbols]

１ ハブホイール ２ 複列転がり軸受 ３ 等速ジョイント ４ ディスクロータ ８，９ 密封装置 １２ ハブホイールの軌道面 ２１ 複列転がり軸受の外輪 ２４ 複列転がり軸受の内輪 ８１ 車両アウタ側の密封装置の環状芯金 ８２〜８４ 車両アウタ側の密封装置のリップ ９１ 車両インナ側の密封装置を構成するシールリン
グ ９１ａ シールリングの環状芯金 ９１ｂ〜９１ｄ シールリングのリップ ９２ 車両インナ側の密封装置を構成するスリンガーReference Signs List 1 hub wheel 2 double row rolling bearing 3 constant velocity joint 4 disk rotor 8, 9 sealing device 12 hub wheel raceway surface 21 outer ring of double row rolling bearing 24 inner ring of double row rolling bearing 81 annular core of sealing device on vehicle outer side Gold 82-84 Lip of sealing device on outer side of vehicle 91 Seal ring constituting sealing device on inner side of vehicle 91a Ring core metal of sealing ring 91b-91d Lip of sealing ring 92 Slinger constituting sealing device on inner side of vehicle

フロントページの続き Ｆターム(参考） 3J016 AA01 BB03 BB16 BB17 CA02 CA06 3J101 AA02 AA32 AA43 AA54 AA62 AA72 BA73 EA53 EA63 FA32 GA03 Continued on the front page F term (reference) 3J016 AA01 BB03 BB16 BB17 CA02 CA06 3J101 AA02 AA32 AA43 AA54 AA62 AA72 BA73 EA53 EA63 FA32 GA03

Claims (4)

【特許請求の範囲】[Claims] 【請求項１】ハブホイールの外周に複列転がり軸受が取
り付けられていて、ハブホイールに一体形成される径方
向外向きのフランジの外面にディスクブレーキ装置のデ
ィスクロータや車輪があてがわれた状態で取り付けられ
る車両用ハブユニットであって、 前記複列転がり軸受の軸方向両端に密封装置が装着され
ており、この密封装置に備えるゴム製のリップの表面
に、潤滑剤が塗布されている、ことを特徴とする車両用
ハブユニット。1. A state in which a double row rolling bearing is mounted on the outer periphery of a hub wheel, and a disk rotor or a wheel of a disk brake device is applied to an outer surface of a radially outward flange formed integrally with the hub wheel. A hub unit for a vehicle attached with, a sealing device is mounted on both ends in the axial direction of the double row rolling bearing, a lubricant is applied to a surface of a rubber lip provided in the sealing device, A hub unit for a vehicle, comprising: 【請求項２】ハブホイールの外周に複列転がり軸受が、
また、ハブホイールに対して前記複列転がり軸受と近接
した状態で等速ジョイントがそれぞれ取り付けられてい
て、ハブホイールに一体形成される径方向外向きのフラ
ンジの外面にディスクブレーキ装置のディスクロータや
車輪があてがわれた状態で取り付けられる車両用ハブユ
ニットであって、 前記複列転がり軸受の軸方向両端に密封装置が装着され
ており、この密封装置に備えるゴム製のリップの表面
に、潤滑剤が塗布されている、ことを特徴とする車両用
ハブユニット。2. A double row rolling bearing is provided on the outer periphery of a hub wheel.
Further, constant velocity joints are respectively attached to the hub wheel in a state of being close to the double row rolling bearing, and a disc rotor of a disc brake device is provided on an outer surface of a radially outward flange formed integrally with the hub wheel. A vehicle hub unit mounted with wheels applied thereto, wherein sealing devices are mounted at both axial ends of the double row rolling bearing, and a lubricating lip surface provided in the sealing device is lubricated. A vehicle hub unit to which an agent is applied. 【請求項３】請求項１または２に記載の車両用ハブユニ
ットにおいて、 前記密封装置が、環状芯金に対してリップを被着したシ
ールリング単体からなり、前記環状芯金が複列転がり軸
受の外輪要素に対して固定状態で取り付けられて、前記
リップが複列転がり軸受の内輪要素に対して接触させら
れて接触密封部を形成するものである、ことを特徴とす
る車両用ハブユニット。3. The vehicle hub unit according to claim 1, wherein the sealing device comprises a single seal ring in which a lip is attached to an annular core, and the annular core is a double row rolling bearing. A hub unit for a vehicle, wherein the lip is fixedly attached to the outer ring element of (1), and the lip is brought into contact with the inner ring element of the double row rolling bearing to form a contact sealing portion. 【請求項４】請求項１または２に記載の車両用ハブユニ
ットにおいて、 前記密封装置が、環状芯金に対してリップを被着してな
るシールリングと、このシールリングのリップが接触さ
せられて接触密封部を形成するスリンガーとを組み合わ
せた構成であり、 前記シールリングの環状芯金が複列転がり軸受の外輪要
素に対して、また、前記スリンガーが複列転がり軸受の
内輪要素に対してそれぞれ固定状態で取り付けられるも
のである、ことを特徴とする車両用ハブユニット。4. The vehicle hub unit according to claim 1, wherein the sealing device is configured such that a sealing ring formed by attaching a lip to an annular metal core and a lip of the sealing ring are brought into contact with each other. And a slinger that forms a contact sealing portion.The annular core of the seal ring is for an outer ring element of a double row rolling bearing, and the slinger is for a inner ring element of a double row rolling bearing. A hub unit for a vehicle, wherein the hub unit is mounted in a fixed state.
JP2000230321A 2000-07-31 2000-07-31 Hub unit for vehicle Pending JP2002039195A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000230321A JP2002039195A (en) 2000-07-31 2000-07-31 Hub unit for vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000230321A JP2002039195A (en) 2000-07-31 2000-07-31 Hub unit for vehicle

Publications (1)

Publication Number Publication Date
JP2002039195A true JP2002039195A (en) 2002-02-06

Family

ID=18723296

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000230321A Pending JP2002039195A (en) 2000-07-31 2000-07-31 Hub unit for vehicle

Country Status (1)

Country Link
JP (1) JP2002039195A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004020378A (en) * 2002-06-17 2004-01-22 Nsk Ltd Method and apparatus for predicting remaining lifetime in bearing
JP2004076924A (en) * 2002-08-19 2004-03-11 Fag Hanwha Bearings Corp Apparatus for sealing water pump bearing
JP2004156726A (en) * 2002-11-07 2004-06-03 Nsk Ltd Rolling bearing device with sensor
JP2008309336A (en) * 2008-07-29 2008-12-25 Sumitomo Heavy Ind Ltd Transmission for foods works
JP2011012740A (en) * 2009-07-01 2011-01-20 Jtekt Corp Bearing sealing device, and vehicle hub unit using the same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004020378A (en) * 2002-06-17 2004-01-22 Nsk Ltd Method and apparatus for predicting remaining lifetime in bearing
JP2004076924A (en) * 2002-08-19 2004-03-11 Fag Hanwha Bearings Corp Apparatus for sealing water pump bearing
JP2004156726A (en) * 2002-11-07 2004-06-03 Nsk Ltd Rolling bearing device with sensor
JP2008309336A (en) * 2008-07-29 2008-12-25 Sumitomo Heavy Ind Ltd Transmission for foods works
JP2011012740A (en) * 2009-07-01 2011-01-20 Jtekt Corp Bearing sealing device, and vehicle hub unit using the same

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