JP2006010057A - Bearing device for wheel - Google Patents

Bearing device for wheel Download PDF

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Publication number
JP2006010057A
JP2006010057A JP2004251295A JP2004251295A JP2006010057A JP 2006010057 A JP2006010057 A JP 2006010057A JP 2004251295 A JP2004251295 A JP 2004251295A JP 2004251295 A JP2004251295 A JP 2004251295A JP 2006010057 A JP2006010057 A JP 2006010057A
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Japan
Prior art keywords
slinger
bearing device
attached
seal
wheel
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Pending
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JP2004251295A
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Japanese (ja)
Inventor
Takayoshi Tetsuka
貴由 手束
Makoto Okasaka
誠 岡阪
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NTN Corp
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NTN Corp
NTN Toyo Bearing Co Ltd
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Priority to JP2004251295A priority Critical patent/JP2006010057A/en
Publication of JP2006010057A publication Critical patent/JP2006010057A/en
Pending legal-status Critical Current

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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
    • 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
    • F16C33/7886—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted outside the gap between the inner and outer races, e.g. sealing rings mounted to an end face or outer surface of a race
    • 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
    • F16C33/783—Details of the sealing or parts thereof, e.g. geometry, material of the mounting region
    • 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
    • F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
    • F16C2226/50—Positive connections
    • F16C2226/60—Positive connections with threaded parts, e.g. bolt and nut connections
    • 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

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing With Elastic Sealing Lips (AREA)
  • Sealing Of Bearings (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bearing device for a wheel which can prevent a bad effect on bearing raceway surfaces resulting from attachment of a sealing member and can replace the sealing member alone and can attach and detach the sealing member to inspect a bearing. <P>SOLUTION: The bearing device for the wheel has an outer member 1 with a plurality of rows of raceway surfaces 1a on an inner peripheral, an inner member 2 with raceway surfaces 2a facing against the raceway surfaces 1a and a plurality of rows of rolling elements 3. The sealing means 8 is provided at an end part of an in-board side between the outer member 1 and the inner member 2. The sealing member 8 consists of an annular slinger 9 for sealing slide-contact attached to either the inner member 2 or the outer member 1 and a sealing 10 with a core metal 11 attached to the other member. The slinger 9 is detachably attached to one of the members with a fixture 13 and the sealing 10 also is detachably attached to the other member with a fixture 14. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

この発明は、自動車等における車輪用軸受装置に関し、特にその密封構造に関する。   The present invention relates to a wheel bearing device in an automobile or the like, and more particularly to a sealing structure thereof.

自動車に用いられる車輪用軸受装置では、外輪と内輪の間に形成される環状空間の両端をシール装置で密封することにより、軸受内部に封入したグリースの漏洩防止と、外部からの泥水や粉塵等の侵入防止が図られている。この場合、インボード側（車体中心側）のシール装置には、メンテナンスフリータイプの組合せ型シール装置が一般的に採用され、その取付けは内輪および外輪に圧入することが通例である（例えば特許文献１）。すなわち、上記組合せ型シール装置は、芯金付きのシールと、このシールが摺接する円環状のスリンガとでなり、前記シールが固定側部材とされる外輪の端部に、また前記スリンガが回転側部材となる内輪の端部に圧入固定される。
特開２００３−１８４８９７号公報 In wheel bearing devices used in automobiles, both ends of the annular space formed between the outer ring and inner ring are sealed with a sealing device to prevent leakage of grease sealed inside the bearing, and muddy water and dust from the outside. Intrusion prevention is attempted. In this case, a maintenance-free combination type sealing device is generally employed as the inboard side (vehicle body center side) sealing device, and the attachment is usually press-fitted into the inner ring and the outer ring (for example, Patent Documents). 1). That is, the combination type sealing device includes a seal with a cored bar and an annular slinger that is in sliding contact with the seal, and the sealer is disposed at the end of the outer ring that is a fixed side member, and the slinger is on the rotation side. It is press-fitted and fixed to the end of the inner ring as a member.
JP 2003-184897 A

しかし、上記構成の組合せ型シール装置は、その構成部品であるシールおよびスリンガを内外輪の端部に圧入固定する構造であるため、このシール装置が取付けられる軸受端部に少なからず弾性変形が生じ、軸受軌道面への悪影響が懸念される。また、このシール装置は圧入固定するタイプであるため、市場で取付け後のシール装置のみを交換することは実質上不可能である。軸受の点検のためのシール装置の取り外しも困難である。   However, since the combination type sealing device having the above-described structure has a structure in which the seal and slinger, which are the component parts, are press-fitted and fixed to the end portions of the inner and outer rings, there is a considerable amount of elastic deformation at the bearing end portion to which the seal device is attached. There are concerns about adverse effects on the bearing raceway surface. Further, since this sealing device is a type that is press-fitted and fixed, it is practically impossible to replace only the sealing device after installation in the market. It is also difficult to remove the sealing device for checking the bearing.

この発明の目的は、密封手段の取付けに起因する軸受軌道面への悪影響を防止できると共に、密封手段の取り替えや点検のための着脱が可能な車輪用軸受装置を提供することである。   An object of the present invention is to provide a wheel bearing device that can prevent adverse effects on the bearing raceway surface due to the installation of the sealing means and can be attached and detached for replacement or inspection of the sealing means.

この発明の車輪用軸受装置は、内周に複列の軌道面を有する外方部材と、これら軌道面に対向する軌道面を有する内方部材と、対向する軌道面間に介在した複列の転動状態とを備え、車体に対して車輪を回転自在に支持する車輪用軸受装置において、前記外方部材と内方部材間のインボード側の端部に密封手段を設ける。この密封手段は、前記内方部材および外方部材のうちのいずれか一方の部材に取付けられるシール摺接用の円環状のスリンガと、他方の部材に取付けられる芯金付きのシールとでなり、前記スリンガを前記一方の部材に取付具により着脱自在に取付け、前記シールを前記他方の部材に他の取付具により着脱自在に取付けたことを特徴とする。
この構成によると、スリンガおよびシールを取付具で着脱自在に取付けるようにしたため、密封手段を圧入固定する場合のような密封手段の取付けに起因する部材開口部の弾性変形が回避されて、軸受軌道面への悪影響が生じない。また、シール部材劣化時等の市場での密封手段の単独の取り替えが可能となり、軸受の点検のための密封手段の着脱も容易になる。 The wheel bearing device of the present invention includes an outer member having a double-row raceway surface on the inner periphery, an inner member having a raceway surface facing these raceway surfaces, and a double-row interposed between the opposing raceway surfaces. In a wheel bearing device having a rolling state and rotatably supporting a wheel with respect to a vehicle body, a sealing means is provided at an end on the inboard side between the outer member and the inner member. This sealing means consists of an annular slinger for seal sliding contact attached to either one of the inner member and the outer member, and a seal with a cored bar attached to the other member, The slinger is detachably attached to the one member by a fixture, and the seal is detachably attached to the other member by another fixture.
According to this configuration, since the slinger and the seal are detachably attached by the fixture, the elastic deformation of the member opening due to the attachment of the sealing means, such as when the sealing means is press-fitted and fixed, is avoided, and the bearing raceway There is no adverse effect on the surface. Further, it becomes possible to replace the sealing means alone in the market when the sealing member is deteriorated, and the sealing means for checking the bearing can be easily attached and detached.

この発明において、前記スリンガを前記一方の部材に前記取付具で取付ける箇所が前記一方の部材の端面であり、前記シールの芯金を前記他方の部材に取付ける箇所が前記他方の部材の端面であり、前記各取付具がボルトであっても良い。
このようにボルトで端面に取付けるようにした場合、密封手段の取付位置が軸受のインボード側の端部でありながら、周面に取付ける場合と異なり、周辺に作業空間が得易く、密封手段の着脱や取り替えを容易に行うことができる。 In this invention, the location where the slinger is attached to the one member with the fixture is the end surface of the one member, and the location where the core of the seal is attached to the other member is the end surface of the other member. Each of the fixtures may be a bolt.
When mounting on the end face with bolts in this way, the mounting position of the sealing means is the end on the inboard side of the bearing, but unlike the case of mounting on the peripheral surface, a work space is easily obtained in the periphery, and the sealing means It can be easily attached and detached.

この発明において、前記スリンガが、前記一方の部材の軸受空間側の周面に嵌合する筒部を有し、前記芯金は前記他方の部材の軸受空間側の周面に嵌合する筒部を有し、これらスリンガの筒部と前記一方の部材の周面との嵌合面、および前記芯金の筒部と前記他方の部材との嵌合面の両方またはいずれか一方に、弾性部材を介在させても良い。上記嵌合面における嵌合は、例えば止まり嵌め、または緩み嵌めとされる。
このように各部材の周面に嵌合する筒部を設けた場合、スリンガおよび芯金の径方向の位置決めが行い易く、固定も堅固に行える。また、その筒部と各部材との嵌合面に弾性部材を介在させたため、スリンガと芯金間の芯ずれが吸収でき、芯ずれに起因するスリンガと芯金間の防水性の低下が防止される。また、スリンガや芯金の内方部材または外方部材との接触面における防水性も向上する。 In this invention, the slinger has a cylindrical portion that fits to the peripheral surface of the one member on the bearing space side, and the core metal fits to the peripheral surface of the other member on the bearing space side Elastic members on both or any one of the fitting surface between the cylindrical portion of the slinger and the peripheral surface of the one member and the fitting surface between the cylindrical portion of the core bar and the other member. May be interposed. The fitting on the fitting surface is, for example, a dead fit or a loose fit.
Thus, when the cylinder part fitted to the surrounding surface of each member is provided, the positioning of the slinger and the core metal in the radial direction can be easily performed, and the fixing can be performed firmly. In addition, since an elastic member is interposed on the fitting surface between the cylindrical portion and each member, it can absorb the misalignment between the slinger and the cored bar, and prevent the deterioration of the waterproof property between the slinger and the cored bar due to the misalignment. Is done. Moreover, the waterproof property in the contact surface with the inner member or outer member of a slinger or a metal core is also improved.

上記のように弾性部材を介在させる場合に、この弾性部材の前記外方部材または内方部材と接する面に凸部を設けても良い。凸部を設けると、長期の使用で弾性部材が外方部材や内方部材に密着して剥がれ難くなっていても、全体に密着せずに隙間が部分的に得られるため、スリンガや芯金を容易に取り外すことができる。また、凸部を設けたことによる柔軟な弾性により、スリンガと芯金間の芯ずれの防止効果が高められ、芯ずれに起因する防水性の低下をより一層確実に防止することができる。   When an elastic member is interposed as described above, a convex portion may be provided on the surface of the elastic member that contacts the outer member or the inner member. Providing a convex part makes it possible to obtain a gap partially without sticking to the whole even if the elastic member is in close contact with the outer member or the inner member due to long-term use. Can be easily removed. Further, the soft elasticity due to the provision of the convex portion enhances the effect of preventing the misalignment between the slinger and the cored bar, and can more reliably prevent the deterioration of the waterproof property due to the misalignment.

この発明において、前記スリンガを前記一方の部材に前記取付具で取付ける箇所が前記一方の部材の端面であり、前記シールの芯金を前記他方の部材に取付ける箇所が前記他方の部材の端面である場合に、前記スリンガとこのスリンガが取付けられる前記一方の部材の端面との間、および前記シールの芯金とこの芯金が取付けられる他方の部材の端面との間の少なくとも一方に弾性部材を介在させても良い。
端面に弾性部材を介在させると、内外の部材の端面における密封手段の取付部での防水性を高めることができる。上記のように周面に嵌合する筒部を設けて弾性部材を介在させる構成と併用した場合は、周面から端面にわたる浸入経路において端面と周面の両方で弾性部材を介在させることになるため、より一層防水性を高めることができる。 In this invention, the location where the slinger is attached to the one member with the fixture is the end surface of the one member, and the location where the core of the seal is attached to the other member is the end surface of the other member. In this case, an elastic member is interposed between the slinger and the end surface of the one member to which the slinger is attached, and at least one between the core metal of the seal and the end surface of the other member to which the core metal is attached. You may let them.
When an elastic member is interposed on the end surface, the waterproofness at the attachment portion of the sealing means on the end surfaces of the inner and outer members can be enhanced. When used in combination with the configuration in which the cylindrical portion fitted to the peripheral surface is provided and the elastic member is interposed as described above, the elastic member is interposed on both the end surface and the peripheral surface in the intrusion path from the peripheral surface to the end surface. Therefore, waterproofness can be further improved.

前記端面に介在させる弾性部材においても、その前記外方部材または内方部材の端面と接する面に凸部を設けても良い。弾性部材が外方部材や内方部材に密着して剥がれ難くなっていても、上記凸部があると剥がれ易くなり、スリンガや芯金を容易に取り外すことができる。   Also in the elastic member interposed in the end surface, a convex portion may be provided on the surface in contact with the end surface of the outer member or the inner member. Even if the elastic member is in close contact with the outer member or the inner member and is difficult to peel off, the protrusion is easily peeled off, and the slinger and the core metal can be easily removed.

前記のように弾性部材に設けられる各部の前記凸部は、円周方向に連続的に伸びる突条であっても良い。連続的に伸びる突条であると、弾性部材による密封性を低下させずに、取り外しの容易性を得ることができる。   As described above, the convex portions of the respective portions provided on the elastic member may be ridges that continuously extend in the circumferential direction. If the protrusions are continuously extended, the ease of removal can be obtained without reducing the sealing performance of the elastic member.

この発明の車輪用軸受装置は、内周に複列の軌道面を有する外方部材と、これら軌道面に対向する軌道面を有する内方部材と、対向する軌道面間に介在した複列の転動状態とを備え、車体に対して車輪を回転自在に支持する車輪用軸受装置において、前記外方部材と内方部材間のインボード側の端部に密封手段を設け、この密封手段は、前記内方部材および外方部材のうちのいずれか一方の部材に取付けられるシール摺接用の円環状のスリンガと、他方の部材に取付けられる芯金付きのシールとでなり、前記スリンガを前記一方の部材に取付具により着脱自在に取付け、前記シールを前記他方の部材に取付具により着脱自在に取付けたため、密封手段の取付けに起因する軸受軌道面への悪影響を防止できると共に、密封手段の取り替えや点検のための着脱が可能となる。   The wheel bearing device of the present invention includes an outer member having a double-row raceway surface on the inner periphery, an inner member having a raceway surface facing these raceway surfaces, and a double-row interposed between the opposing raceway surfaces. In a wheel bearing device having a rolling state and rotatably supporting a wheel with respect to a vehicle body, a sealing means is provided at an end on the inboard side between the outer member and the inner member, An annular slinger for sliding contact with a seal attached to any one of the inner member and the outer member, and a seal with a metal core attached to the other member, and the slinger is Since it is detachably attached to one member by a fixture and the seal is detachably attached to the other member by a fixture, it is possible to prevent adverse effects on the bearing raceway surface due to the attachment of the sealing means, and Replacement or inspection Attachment and detachment of the order is possible.

この発明の一実施形態を図１ないし図７と共に説明する。この実施形態の車輪用軸受装置は、複列の転がり軸受形式の軸受であり、第３世代型に分類されるものである。なお、この明細書において、車両に取付けた状態で車両の車幅方向外側寄りとなる側をアウトボード側と言い、車幅方向の中央寄りとなる側をインボード側と呼ぶ。図１では、左側がアウトボード側、右側がインボード側となる。この車輪用軸受装置は、内周に複列の軌道面１ａを有する外方部材１と、これら軌道面１ａにそれぞれ対向する軌道面２ａを有する内方部材２と、これら複列の軌道面１ａ，２ａ間に介在した複列の転動体３とを備え、車体に対して車輪を回転自在に支持する。外方部材１は固定側の部材となるものであって、外周に車体取付フランジ１ｂを有する一体の部材である。内方部材２は回転側の部材となるものであって、外周のアウトボード側端に車輪取付フランジ４ａを有するハブ輪４と、このハブ輪４の外周のインボード側端に圧入状態に嵌合させた内輪５とを有し、ハブ輪４のインボード側端に形成されたフランジ状の加締部４ｂにより内輪５がハブ輪４に対して軸方向に締め付け固定される。これらハブ輪４および内輪５のそれぞれに、上記複列の軌道面２ａのうちの各列の軌道面２ａが形成されている。   An embodiment of the present invention will be described with reference to FIGS. The wheel bearing device of this embodiment is a double-row rolling bearing type bearing and is classified as a third generation type. In this specification, the side closer to the outer side in the vehicle width direction of the vehicle when attached to the vehicle is referred to as the outboard side, and the side closer to the center in the vehicle width direction is referred to as the inboard side. In FIG. 1, the left side is the outboard side and the right side is the inboard side. The wheel bearing device includes an outer member 1 having double-row raceway surfaces 1a on the inner periphery, an inner member 2 having raceway surfaces 2a facing the raceway surfaces 1a, and these double-row raceway surfaces 1a. , 2a and a double-row rolling element 3 interposed between the two wheels 2a and 2b, and supports the wheel rotatably with respect to the vehicle body. The outer member 1 is a member on the fixed side, and is an integral member having a vehicle body mounting flange 1b on the outer periphery. The inner member 2 is a member on the rotation side, and is fitted into a hub wheel 4 having a wheel mounting flange 4a at an outer outboard side end of the outer periphery and an inboard side end of the outer periphery of the hub wheel 4 in a press-fitted state. The inner ring 5 is clamped and fixed in the axial direction with respect to the hub ring 4 by a flange-shaped crimping portion 4 b formed at the inboard side end of the hub ring 4. Each of the hub ring 4 and the inner ring 5 is formed with a row of raceway surfaces 2a out of the double row raceway surfaces 2a.

ハブ輪４には、図示しない等速自在継手の一端（例えば外輪）が連結され、ハブ輪４の車輪取付フランジ４ａに車輪（図示せず）がボルト２１で取付けられる。等速自在継手は、その他端（例えば内輪）が駆動軸に連結される。転動体３はボールからなる。この車輪用軸受装置は、複列のアンギュラ玉軸受とされ、背面合わせとなるように各軌道面１ａ，２ａの接触角が形成されている。転動体３は各列毎に保持器６で保持されている。内外の部材２，１間に形成される環状空間の両端は一対の密封手段７，８で密封されている。   One end (for example, an outer ring) of a constant velocity universal joint (not shown) is connected to the hub wheel 4, and a wheel (not shown) is attached to the wheel mounting flange 4 a of the hub wheel 4 with a bolt 21. The other end (for example, inner ring) of the constant velocity universal joint is connected to the drive shaft. The rolling element 3 consists of a ball. This wheel bearing device is a double-row angular contact ball bearing, and contact angles of the raceway surfaces 1a and 2a are formed so as to be back-to-back. The rolling elements 3 are held by a holder 6 for each row. Both ends of the annular space formed between the inner and outer members 2 and 1 are sealed by a pair of sealing means 7 and 8.

図２に拡大して示すように、内外の部材２，１間のインボード側の端部の密封手段８は、内方部材２に取付けられるシール摺接用の円環状のスリンガ９と、外方部材１に取付けられる芯金付きのシール１０との組合せからなる組合せ型シール装置とされている。   As shown in FIG. 2 in an enlarged manner, the sealing means 8 at the end on the inboard side between the inner and outer members 2 and 1 includes an annular slinger 9 for sealing sliding contact attached to the inner member 2, The combination seal device is a combination of a seal 10 with a metal core attached to the side member 1.

スリンガ９は、円筒部分９ａａおよび内向フランジ９ａｂからなる断面Ｌ字状の取付部９ａと、この取付部９ａの内向フランジ９ａｂ内端から折り曲げられて同フランジ９ａｂに一部が重なった状態で外径側に延びる側板部９ｂとでなる。このスリンガ９は、その取付部９ａが内方部材２のインボード側端部の外周面から端面にわたって被さるように配置され、取付具であるボルト１３により内方部材２に着脱自在に取付けられる。ボルト３は内方部材２の端面に設けられたねじ孔からなる取付孔３１にねじ込まれる。スリンガ９の前記取付部フランジ９ａｂと側板部９ｂの重なり部には、前記ボルト１３の挿通孔１５が円周方向に分配して複数形成されている。すなわち、スリンガ９は、前記ボルト挿通孔１５に挿通したボルト１３で、前記取付部フランジ９ａｂと側板部９ｂの重なり部を内方部材２の端面に締結することにより内方部材２に取付けられる。このスリンガ９の取付けにおいては、スリンガ取付部９ａと内方部材２との間に弾性部材１７が介在させられる。   The slinger 9 has an L-shaped mounting portion 9a composed of a cylindrical portion 9aa and an inward flange 9ab, and is bent from the inner end of the inward flange 9ab of the mounting portion 9a and partially overlaps the flange 9ab. The side plate portion 9b extends to the side. The slinger 9 is disposed such that its attachment portion 9a covers from the outer peripheral surface of the inboard side end portion of the inward member 2 to the end surface, and is detachably attached to the inward member 2 by a bolt 13 as an attachment tool. The bolt 3 is screwed into a mounting hole 31 formed by a screw hole provided on the end surface of the inner member 2. A plurality of insertion holes 15 for the bolts 13 are distributed in the circumferential direction at the overlapping portion of the attachment flange 9ab and the side plate 9b of the slinger 9. That is, the slinger 9 is attached to the inner member 2 by fastening the overlapping portion of the attachment portion flange 9ab and the side plate portion 9b to the end surface of the inner member 2 with the bolt 13 inserted through the bolt insertion hole 15. In attaching the slinger 9, the elastic member 17 is interposed between the slinger attaching portion 9 a and the inner member 2.

シール１０は、環状の芯金１１と、この芯金１１に加硫接着等で固着された弾性部材１２とからなる。芯金１１は、外向フランジ１１ａａと円筒部分１１ａｂからなる断面Ｌ字状の取付部１１ａと、この取付部１１ａの円筒部分１１ａｂの一端から内径側に延びる側板部１１ｂとでなる。弾性部材１２は、前記芯金１１の取付部円筒部分１１ａｂから側板部１１ｂにわたって固着される。この弾性部材１２には、前記スリンガ９の側板部９ｂに摺接するサイドリップ１２ａと取付部円筒部分９ａａに摺接するラジアルリップ１２ｂ，１２ｃが形成されている。   The seal 10 includes an annular cored bar 11 and an elastic member 12 fixed to the cored bar 11 by vulcanization adhesion or the like. The cored bar 11 includes an attachment portion 11a having an L-shaped cross section including an outward flange 11aa and a cylindrical portion 11ab, and a side plate portion 11b extending from one end of the cylindrical portion 11ab of the attachment portion 11a toward the inner diameter side. The elastic member 12 is fixed from the mounting portion cylindrical portion 11ab of the core metal 11 to the side plate portion 11b. The elastic member 12 is formed with side lips 12a that are in sliding contact with the side plate portion 9b of the slinger 9 and radial lips 12b and 12c that are in sliding contact with the mounting portion cylindrical portion 9aa.

このシール１０は、その芯金取付部１１ａが外方部材１のインボード側端部の内周面から端面にわたって被さり、かつ芯金側板部１１ｂがスリンガ９の側板部９ｂに対して軸受内側から軸方向に対向する配置で、取付具であるボルト１４により外方部材１に着脱自在に取付けられる。ボルト１４は、外方部材１の端面に形成されたねじ孔からなる取付孔３
２にねじ込まれる。芯金１１の取付部フランジ１１ａａには、前記ボルト１４の挿通孔１６が円周方向に分配して複数形成されている。すなわち、シール１０は、前記ボルト挿通孔１６に挿通したボルト１４で、前記取付部フランジ１１ａａを外方部材１の端面に締結することにより外方部材１に取付けられる。シール１０の取付けにおいては、芯金取付部１１ａと外方部材１との間に弾性部材１８が介在させられる。 The seal 10 has a cored bar mounting portion 11 a that covers from the inner peripheral surface of the inboard side end portion of the outer member 1 to the end surface, and a cored bar side plate portion 11 b that faces the side plate portion 9 b of the slinger 9 from the inside of the bearing. With the arrangement facing the axial direction, the outer member 1 is detachably attached to the outer member 1 by a bolt 14 as a fixture. The bolt 14 is a mounting hole 3 formed of a screw hole formed on the end face of the outer member 1.
2 screwed. A plurality of insertion holes 16 for the bolts 14 are distributed in the circumferential direction in the attachment portion flange 11aa of the core metal 11. That is, the seal 10 is attached to the outer member 1 by fastening the attachment portion flange 11aa to the end surface of the outer member 1 with the bolt 14 inserted through the bolt insertion hole 16. In attaching the seal 10, an elastic member 18 is interposed between the cored bar attaching portion 11 a and the outer member 1.

スリンガ９と内方部材２との間に介在させる弾性部材１７は、内方部材２の外周面に接する円筒部１７ａと、内方部材２の端面に接する内向フランジ１７ｂとからなる断面Ｌ字状の環状体とされる。図３に斜視図で示すように、前記円筒部１７ａおよび内向フランジ１７ｂの内方部材２と接する面に凸部１９が設けられている。この場合、その凸部１９は円周方向に連続的に延びる突条とされている。内向フランジ１７ｂには、スリンガ９のボルト挿通孔１５に整合するボルト挿通孔２５が設けられている。   The elastic member 17 interposed between the slinger 9 and the inner member 2 has an L-shaped cross section composed of a cylindrical portion 17 a that contacts the outer peripheral surface of the inner member 2 and an inward flange 17 b that contacts the end surface of the inner member 2. It is considered as an annular body. As shown in a perspective view in FIG. 3, a convex portion 19 is provided on the surface of the cylindrical portion 17 a and the inward flange 17 b that contacts the inner member 2. In this case, the convex portion 19 is a protrusion that extends continuously in the circumferential direction. The inward flange 17 b is provided with a bolt insertion hole 25 that matches the bolt insertion hole 15 of the slinger 9.

また、シール１０の芯金１１と外方部材１との間に介在させる弾性部材１８は、外方部材１の内周面に接する円筒部１８ａと、外方部材１の端面に接する外向フランジ１８ｂとからなる断面Ｌ字状の環状体とされる。図４に斜視図で示すように、前記円筒部１８ａおよび外向フランジ１８ｂの外方部材１と接する面に凸部２０が設けられている。この凸部２０も円周方向に連続的に延びる突条とされている。外向フランジ１８ｂには、シール１０の芯金１１のボルト挿通孔１６に整合するボルト挿通孔２６が設けられている。   The elastic member 18 interposed between the metal core 11 of the seal 10 and the outer member 1 includes a cylindrical portion 18 a that contacts the inner peripheral surface of the outer member 1 and an outward flange 18 b that contacts the end surface of the outer member 1. An annular body having an L-shaped cross section consisting of As shown in a perspective view in FIG. 4, a convex portion 20 is provided on the surface of the cylindrical portion 18 a and the outward flange 18 b in contact with the outer member 1. This convex part 20 is also made into the protrusion continuously extended in the circumferential direction. The outward flange 18 b is provided with a bolt insertion hole 26 that matches the bolt insertion hole 16 of the core 11 of the seal 10.

なお、前記各弾性部材１７，１８の表面に設けた凸部１９，２０は、図３および図４に示すような突条に限らず、図５および図６に示すように分散配置した例えば円すい台状の突起であっても良い。また、凸部１９，２０となる突起は、図７（Ａ）のような円すい台形状に限らず、図７（Ｂ）のような円柱状であっても、図７（Ｃ）のような半球状であっても良い。   The protrusions 19 and 20 provided on the surfaces of the elastic members 17 and 18 are not limited to the protrusions as shown in FIGS. 3 and 4, for example, conically arranged as shown in FIGS. 5 and 6. A trapezoidal protrusion may be used. The protrusions 19 and 20 are not limited to a truncated cone shape as shown in FIG. 7A, but may be a cylindrical shape as shown in FIG. It may be hemispherical.

上記構成の車輪用軸受装置によると、インボード側の端部の密封手段８を、円環状のスリンガ９と、芯金１１付きのシール１０とでなる組合せ型シール装置としたので、従来と同様に、封入グリースの漏洩防止、外部からの粉塵，泥水等の侵入に対して優れたシール性能が得られる。スリンガ９は内方部材２にボルト１３で着脱自在に取付け、シール１０は外方部材１にボルト１４で着脱自在に取付けているので、圧入嵌合させて取付けるものと異なり、密封手段８の取付けに起因する軸受軌道面１ａ，２ａへの変形等の悪影響が回避される。また、市場での密封手段８の単独取り替えや、軸受点検のための密封手段８の着脱が容易となる。   According to the wheel bearing device having the above-described configuration, the sealing means 8 at the end portion on the inboard side is the combined seal device including the annular slinger 9 and the seal 10 with the core metal 11, so that it is the same as the conventional one. In addition, excellent sealing performance can be obtained against leakage of encapsulated grease and against intrusion of dust, muddy water, etc. from the outside. The slinger 9 is detachably attached to the inner member 2 with bolts 13 and the seal 10 is detachably attached to the outer member 1 with bolts 14. Adverse effects such as deformation to the bearing raceways 1a and 2a due to the above are avoided. In addition, it becomes easy to replace the sealing means 8 on the market or to attach and detach the sealing means 8 for bearing inspection.

この実施形態では、スリンガ９を内方部材２にボルト１３で取付ける箇所が内方部材２の端面であり、またシール１０の芯金１１を外方部材１にボルト１４で取付ける箇所も外方部材１の端面であるため、密封手段８の取付位置が軸受のインボード側の端部でありながら、密封手段８の取り替えを容易に行うことができる。すなわち、車輪用軸受装置におけるインボード側端は、周辺に等速ジョイントやナックル等があって空き空間が狭いが、端面に取付けられていると、等速ジョイントとナックル等の間の空間を作業空間として利用して、簡単にスリンガ９やシール１０を着脱することができる。   In this embodiment, the location where the slinger 9 is attached to the inner member 2 with the bolt 13 is the end face of the inner member 2, and the location where the core 11 of the seal 10 is attached to the outer member 1 with the bolt 14 is also the outer member. Therefore, the sealing means 8 can be easily replaced while the mounting position of the sealing means 8 is the end portion on the inboard side of the bearing. In other words, the inboard side end of the wheel bearing device has a constant velocity joint, a knuckle, etc. in the periphery, and the empty space is narrow, but if it is attached to the end surface, the space between the constant velocity joint and the knuckle etc. Using the space, the slinger 9 and the seal 10 can be easily attached and detached.

また、この実施形態では、スリンガ９が、内方部材２の外周面に嵌合する取付部円筒部分９ａａを有し、この取付部円筒部分９ａａと内方部材２の外周面との嵌合面に、弾性部材１７の円筒部１７ａを介在させているので、この嵌合面での防水性を確実なものとすることができる。シール１０の芯金１１についても、外方部材１の内周面に嵌合する取付部円筒部分１１ａｂを有し、この取付部円筒部分１１ａｂと外方部材１の内周面との嵌合面に、弾性部材１８の円筒部１８ａを介在させているので、この嵌合面での防水性を確実なものとすることができる。また、上記弾性部材１７，１８の介在により、スリンガ９と芯
金１１との芯ずれが吸収され、この芯ずれに起因するスリンガ９と各リップ１２ａ〜１２ｃとの接触不良による防水性の低下が防止され、密封手段８における防水性をより確実なものすることができる。上記弾性部材１７，１８は、必ずしも両方を設ける必要はなく、弾性部材１７，１８のいずれか片方が設けられていると、上記の芯ずれの防止効果が得られる。 Further, in this embodiment, the slinger 9 has a mounting portion cylindrical portion 9aa that fits to the outer peripheral surface of the inner member 2, and a fitting surface between the mounting portion cylindrical portion 9aa and the outer peripheral surface of the inner member 2. Further, since the cylindrical portion 17a of the elastic member 17 is interposed, the waterproof property on the fitting surface can be ensured. The metal core 11 of the seal 10 also has a mounting portion cylindrical portion 11ab that fits to the inner peripheral surface of the outer member 1, and a fitting surface between the mounting portion cylindrical portion 11ab and the inner peripheral surface of the outer member 1. Further, since the cylindrical portion 18a of the elastic member 18 is interposed, the waterproof property on the fitting surface can be ensured. Further, due to the interposition of the elastic members 17, 18, the misalignment between the slinger 9 and the cored bar 11 is absorbed. Thus, the waterproofness of the sealing means 8 can be further ensured. Both of the elastic members 17 and 18 do not necessarily need to be provided, and if one of the elastic members 17 and 18 is provided, the above-described effect of preventing misalignment can be obtained.

スリンガ９の取付部フランジ９ａｂと側板部９ｂとの重なり部と、内方部材２の端面との間には、弾性部材１７の内向フランジ１７ｂを介在させているので、内方部材２の端面での防水封を確実なものとすることができる。また、シール１０の芯金１１の取付部フランジ１１ａａと外方部材１の端面との間に、弾性部材１８の外向フランジ１８ｂを介在させているので、外方部材１の端面での防水性を確実なものとすることができる。すなわち内外の部材２，１の端面における密封手段８の取付部での防水性を確実なものすることができる。   Since the inward flange 17b of the elastic member 17 is interposed between the overlapping portion of the attachment flange 9ab and the side plate portion 9b of the slinger 9 and the end face of the inner member 2, the end face of the inner member 2 The waterproof seal can be ensured. Further, since the outward flange 18b of the elastic member 18 is interposed between the attachment flange 11aa of the metal core 11 of the seal 10 and the end surface of the outer member 1, the waterproof property at the end surface of the outer member 1 is ensured. It can be certain. That is, the waterproofness at the attachment portion of the sealing means 8 on the end surfaces of the inner and outer members 2 and 1 can be ensured.

前記弾性部材１７，１８における円筒部１７ａ，１８ａの内外の部材２，２と接する面に凸部１９，２０を設けているので、長期の使用で弾性部材１７，１８が外方部材１や内方部材２に密着して剥がれ難くなっていても、全体に密着せずに隙間が部分的に得られるため、スリンガ９や芯金１１を容易に取り外すことができる。   Since the convex portions 19 and 20 are provided on the surfaces of the elastic members 17 and 18 in contact with the inner and outer members 2 and 2 of the cylindrical portions 17a and 18a, the elastic members 17 and 18 become the outer member 1 and the inner member when used for a long time. Even if it is in close contact with the side member 2 and is difficult to peel off, the slinger 9 and the cored bar 11 can be easily removed because the gap is partially obtained without being in close contact with the whole.

前記弾性部材１７，１８は、内向フランジ１７ｂおよび外向フランジ１８ｂの内外の部材２，１の端面と接する面にも凸部１９，２０を設けているので、この部分においても、長期使用の間の密着に対して、容易に取り外しが行える。   The elastic members 17 and 18 are provided with convex portions 19 and 20 on the surfaces of the inward flange 17b and the outward flange 18b that are in contact with the end surfaces of the inner and outer members 2 and 1, respectively. It can be easily removed for close contact.

前記弾性部材１７，１８の凸部１９，２０を、図３および図４に示すように、円周方向に連続的に延びる突条とした場合には、前記防水性を向上させることができる。   When the convex portions 19 and 20 of the elastic members 17 and 18 are ridges extending continuously in the circumferential direction as shown in FIGS. 3 and 4, the waterproofness can be improved.

なお、上記各実施形態では、密封手段８のスリンガ９を内方部材２に、シール１０を外方部材１に取付けた例を示したが、れに限らず、スリンガ９を外方部材１に、シール１０を内方部材２に取付ける構成であっても、上記と同様の効果を得ることができる。   In each of the above embodiments, the example in which the slinger 9 of the sealing means 8 is attached to the inner member 2 and the seal 10 is attached to the outer member 1 is shown, but the present invention is not limited thereto, and the slinger 9 is attached to the outer member 1. Even if it is the structure which attaches the seal | sticker 10 to the inner member 2, the effect similar to the above can be acquired.

この発明の一実施形態にかかる車輪用軸受装置の断面図である。It is sectional drawing of the wheel bearing apparatus concerning one Embodiment of this invention. 同軸受装置の部分拡大断面図である。It is a partial expanded sectional view of the bearing device. 同軸受装置における外方部材と密封手段との間に介在させる弾性部材の斜視図である。It is a perspective view of the elastic member interposed between the outward member and sealing means in the bearing device. 同軸受装置における内方部材と密封手段との間に介在させる弾性部材の斜視図である。It is a perspective view of the elastic member interposed between the inner member and sealing means in the bearing device. 外方部材と密封手段の間に介在させる弾性部材の他の例を示す部分斜視図である。It is a fragmentary perspective view which shows the other example of the elastic member interposed between an outward member and a sealing means. 内方部材と密封手段の間に介在させる弾性部材の他の例を示す部分斜視図である。It is a fragmentary perspective view which shows the other example of the elastic member interposed between an inner member and a sealing means. 弾性部材の表面に形成する凸部の各例を示す斜視図である。It is a perspective view which shows each example of the convex part formed in the surface of an elastic member.

符号の説明Explanation of symbols

１…外方部材
１ａ…軌道面
２…内方部材
２ａ…軌道面
３…転動体
８…密封手段
９…スリンガ
９ａａ…円筒部分
１０…シール
１１…芯金
１１ａｂ…円筒部分
１３，１４…ボルト（取付具）
１７，１８…弾性部材
１７ａ，１８ａ…円筒部
１７ｂ…内向フランジ
１８ｂ…外向フランジ
１９，２０…凸部 DESCRIPTION OF SYMBOLS 1 ... Outer member 1a ... Raceway surface 2 ... Inner member 2a ... Raceway surface 3 ... Rolling element 8 ... Sealing means 9 ... Slinger 9aa ... Cylindrical part 10 ... Seal 11 ... Core metal 11ab ... Cylindrical part 13, 14 ... Bolt ( Fitting)
17, 18 ... Elastic members 17a, 18a ... Cylindrical portion 17b ... Inward flange 18b ... Outward flanges 19, 20 ... Projection

Claims (7)

内周に複列の軌道面を有する外方部材と、これら軌道面に対向する軌道面を有する内方部材と、対向する軌道面間に介在した複列の転動体とを備え、車体に対して車輪を回転自在に支持する車輪用軸受装置において、
前記外方部材と内方部材間のインボード側の端部に密封手段を設け、この密封手段は、前記内方部材および外方部材のうちのいずれか一方の部材に取付けられるシール摺接用の円環状のスリンガと、他方の部材に取付けられる芯金付きのシールとでなり、前記スリンガを前記一方の部材に取付具により着脱自在に取付け、前記シールを前記他方の部材に他の取付具により着脱自在に取付けたことを特徴とする車輪用軸受装置。 An outer member having a double-row raceway surface on the inner periphery, an inner member having a raceway surface facing these raceway surfaces, and a double-row rolling element interposed between the opposing raceway surfaces, In the wheel bearing device for rotatably supporting the wheel,
A sealing means is provided at an end portion on the inboard side between the outer member and the inner member, and this sealing means is used for seal sliding contact attached to one of the inner member and the outer member. An annular slinger and a seal with a metal core attached to the other member, the slinger is detachably attached to the one member by a fixture, and the seal is attached to the other member. A bearing device for a wheel, wherein the wheel bearing device is detachably attached to the wheel. 請求項１において、前記スリンガを前記一方の部材に前記取付具で取付ける箇所が前記一方の部材の端面であり、前記シールの芯金を前記他方の部材に取付ける箇所が前記他方の部材の端面であり、前記各取付具がボルトである車輪用軸受装置。   In Claim 1, the location which attaches the said slinger to said one member with the said fixture is an end surface of said one member, and the location which attaches the metal core of the said seal to said other member is the end surface of said other member. A wheel bearing device in which each of the fixtures is a bolt. 請求項１または請求項２において、前記スリンガが、前記一方の部材の軸受空間側の周面に嵌合する筒部を有し、前記芯金は前記他方の部材の軸受空間側の周面に嵌合する筒部を有し、これらスリンガの筒部と前記一方の部材の周面との嵌合面、および前記芯金の筒部と前記他方の部材との嵌合面の両方またはいずれか一方に、弾性部材を介在させた車輪用軸受装置。   3. The slinger according to claim 1, wherein the slinger has a cylindrical portion that is fitted to a peripheral surface of the one member on the bearing space side, and the core metal is provided on a peripheral surface of the other member on the bearing space side. And / or a fitting surface between the cylindrical portion of the slinger and the peripheral surface of the one member and / or a fitting surface between the cylindrical portion of the core metal and the other member. On the other hand, a wheel bearing device in which an elastic member is interposed. 請求項３において、前記弾性部材の前記外方部材または内方部材と接する面に凸部を設けた車輪用軸受装置。   4. The wheel bearing device according to claim 3, wherein a convex portion is provided on a surface of the elastic member in contact with the outer member or the inner member. 請求項２において、前記スリンガとこのスリンガが取付けられる前記一方の部材の端面との間、および前記シールの芯金とこの芯金が取付けられる他方の部材の端面との間の少なくとも一方に弾性部材を介在させた車輪用軸受装置。   3. The elastic member according to claim 2, wherein the elastic member is provided between the slinger and an end surface of the one member to which the slinger is attached, and at least one between the core metal of the seal and the end surface of the other member to which the core metal is attached. Wheel bearing device with interposition. 請求項５において、前記弾性部材の前記外方部材または内方部材の端面と接する面に凸部を設けた車輪用軸受装置。   The wheel bearing device according to claim 5, wherein a convex portion is provided on a surface of the elastic member that contacts an end surface of the outer member or the inner member. 請求項４または請求項６において、前記凸部が円周方向に連続的に伸びる突条である車輪用軸受装置。
The wheel bearing device according to claim 4 or 6, wherein the convex portion is a protrusion that continuously extends in a circumferential direction.
JP2004251295A 2004-05-21 2004-08-31 Bearing device for wheel Pending JP2006010057A (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
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JP2004251295A JP2006010057A (en) 2004-05-21 2004-08-31 Bearing device for wheel

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Publication Number Publication Date
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Family

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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
JP2008069797A (en) * 2006-09-12 2008-03-27 Nok Corp Oil seal
JP2010038346A (en) * 2008-08-08 2010-02-18 Jtekt Corp Rolling bearing device
JP2010060126A (en) * 2008-08-08 2010-03-18 Jtekt Corp Rolling bearing device
WO2015041337A1 (en) * 2013-09-20 2015-03-26 Ntn株式会社 Sealing devices for anti-friction bearing
JP2016102545A (en) * 2014-11-28 2016-06-02 Nok株式会社 Seal device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008069797A (en) * 2006-09-12 2008-03-27 Nok Corp Oil seal
JP2010038346A (en) * 2008-08-08 2010-02-18 Jtekt Corp Rolling bearing device
JP2010060126A (en) * 2008-08-08 2010-03-18 Jtekt Corp Rolling bearing device
WO2015041337A1 (en) * 2013-09-20 2015-03-26 Ntn株式会社 Sealing devices for anti-friction bearing
JP2015059646A (en) * 2013-09-20 2015-03-30 Ntn株式会社 Sealing device of rolling bearing
CN105556147A (en) * 2013-09-20 2016-05-04 Ntn株式会社 Sealing devices for anti-friction bearing
US9751576B2 (en) 2013-09-20 2017-09-05 Ntn Corporation Sealing devices for anti-friction bearing
JP2016102545A (en) * 2014-11-28 2016-06-02 Nok株式会社 Seal device

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