JP4467282B2 - Wheel bearing device - Google Patents

Wheel bearing device Download PDF

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JP4467282B2
JP4467282B2 JP2003375475A JP2003375475A JP4467282B2 JP 4467282 B2 JP4467282 B2 JP 4467282B2 JP 2003375475 A JP2003375475 A JP 2003375475A JP 2003375475 A JP2003375475 A JP 2003375475A JP 4467282 B2 JP4467282 B2 JP 4467282B2
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slinger
sealing means
wheel bearing
wheel
thin film
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JP2005140191A (en
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晃司 西野
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NTN Corp
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NTN Corp
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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
    • F16C33/7816—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
    • 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
    • F16C19/22—Bearings 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
    • F16C19/34—Bearings 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
    • F16C19/38—Bearings 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
    • F16C19/383—Bearings 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
    • F16C19/385—Bearings 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
    • F16C19/386—Bearings 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
    • 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
    • F16C2226/30—Material joints
    • F16C2226/40—Material joints with adhesive

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

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.

自動車等の車両に用いられる軸受装置は、路面等に曝される厳しい環境下にあるため、外部からの塵埃や泥水の確実な侵入防止が求められ、また保守の不要化の面から、グリース漏れの防止についても高い効果が求められる。
このため、例えば図５，図６に示すようなシール構造が採用されている（例えば特許文献１）。同図の軸受装置は、外方部材３１と内方部材３２の複列の軌道面３４，３５に、ボール３３を介在させたものであり、内外の部材３２，３１間に形成される環状空間の両端が、密封手段３７で密封されている。 Bearing devices used in vehicles such as automobiles are in a harsh environment where they are exposed to road surfaces, etc., so it is necessary to prevent dust and muddy water from entering the system from the outside. A high effect is also required for prevention of the above.
For this reason, for example, a seal structure as shown in FIGS. 5 and 6 is employed (for example, Patent Document 1). The bearing device shown in FIG. 1 has an annular space formed between inner and outer members 32, 31 in which balls 33 are interposed between double-row raceway surfaces 34, 35 of an outer member 31 and an inner member 32. Both ends are sealed with sealing means 37.

図５の密封手段３７を図６に拡大して示す。この密封手段３７は、内方部材３２の外周に圧入されるスリンガ４５と、このスリンガ４５に対向して外方部材３１の内周に圧入される芯金４１と、上記スリンガ４５に接触する３つのシールリップ４２ａ，４２ｂ，４２ｃを有し上記芯金４１に固着された弾性部材４２とからなる。弾性部材４２の１つのシールリップ４２ａは、封入グリースの流出防止用であり、軸受空間の内方に延びている。他のシールリップ４２ｂ，４２ｃは塵埃，泥水の侵入防止用である。
特開２００２−１４７４７８号公報 The sealing means 37 of FIG. 5 is shown enlarged in FIG. The sealing means 37 is in contact with the slinger 45 that is press-fitted into the outer periphery of the inner member 32, the core 41 that is press-fitted into the inner periphery of the outer member 31 so as to face the slinger 45, and the slinger 45. The elastic member 42 has two seal lips 42a, 42b, 42c and is fixed to the core metal 41. One seal lip 42a of the elastic member 42 is for preventing the sealed grease from flowing out, and extends inward in the bearing space. The other seal lips 42b and 42c are for preventing entry of dust and muddy water.
JP 2002-147478 A

しかし、上記車輪用軸受装置における密封手段３７では、内方部材３２と、その外周に圧入されるスリンガ４５とが金属接触状態となっている。そのため、スリンガ圧入部の面粗さや真円度等の形状に不備がある場合や、深さを伴う軸方向の貫通傷がある場合には、十分な密封性能が得られない。   However, in the sealing means 37 in the wheel bearing device, the inner member 32 and the slinger 45 press-fitted into the outer periphery thereof are in a metal contact state. Therefore, when the shape of the slinger press-fitting part is inadequate in the surface roughness, roundness, or the like, or when there is an axial penetration with depth, sufficient sealing performance cannot be obtained.

この発明の目的は、スリンガの嵌合部に高度な形状精度を要求することなく、嵌合部の漏れを防止して十分な密封性能を確保できる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 capable of preventing leakage of a fitting portion and ensuring a sufficient sealing performance without requiring high shape accuracy in a fitting portion of a slinger.

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体と、上記外方部材と内方部材との間の環状空間の両端をそれぞれ密封する一対の密封手段とを備え、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、上記いずれかの密封手段を、内方部材の外周に嵌合したスリンガを有するものとし、このスリンガを有する密封手段は、スリンガに対向して外方部材の内径面に嵌合する芯金と、この芯金に加硫接着剤を用いて一体に固着された弾性部材とを有し、上記スリンガの内径面に、フェノール系の加硫接着剤を固化してなる薄膜を形成し、この薄膜を形成する加硫接着剤として、上記弾性部材を固着する加硫接着剤を用いたことを特徴とする。
この構成によると、スリンガを内方部材の外周に圧入したときに、上記薄膜が、内方部材の外周やスリンガの内径面における凹部、真円度等の形状不備部、および深さを伴う軸方向貫通傷を埋める役割を果たす。そのため、スリンガの嵌合部からの漏れが生じず、十分な密封機能を確保することができる。
上記薄膜として、接着剤を使用するため、薄膜形成のために新規設備が不要であり、低コストで実現できる。また、例えば合成樹脂の射出成形の薄膜とする場合に比べて、薄い膜厚を容易に作ることができ、スリンガの圧入による嵌合性を低下させない必要最小限の膜厚に成形することができる。接着剤の代わりにシーラント剤を用いると、スリンガに薄膜を形成して固化させた後に、内方部材に嵌合させるときにシーラント剤に剥がれが生じるが、接着剤の薄膜であると、このような嵌合作業時の剥がれの問題も生じない。 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 that includes a rolling element and a pair of sealing means that seals both ends of the annular space between the outer member and the inner member, and supports the wheel rotatably with respect to the vehicle body. Any one of the sealing means has a slinger fitted to the outer periphery of the inner member, and the sealing means having the slinger has a core metal fitted to the inner diameter surface of the outer member facing the slinger, and this and an elastic member fixed integrally with the vulcanization adhesive to the metal core, the inner diameter surface of the slinger, to form a thin film ing to solidify the vulcanization adhesive phenolic, the thin film as it formed vulcanization Chakuzai, vulcanization you fixing the elastic member Characterized by using the.
According to this configuration, when the slinger is press-fitted into the outer periphery of the inner member, the thin film has a concave portion on the outer periphery of the inner member and the inner diameter surface of the slinger, a shape defect portion such as roundness, and a shaft with a depth. Plays a role in filling directional penetration wounds. Therefore, leakage from the fitting part of the slinger does not occur, and a sufficient sealing function can be ensured.
Since an adhesive is used as the thin film, no new equipment is required for forming the thin film, which can be realized at low cost. Further, for example, a thin film thickness can be easily formed as compared with the case of using a synthetic resin injection molding thin film, and the film can be molded to a minimum necessary film thickness without reducing the fitting property due to the press-fitting of a slinger. . When a sealant is used instead of an adhesive, the thin film is formed on the slinger and solidified, and then the sealant is peeled off when fitted to the inner member. There is no problem of peeling during the fitting operation.

この発明において、上記弾性部材は、上記スリンガに接するシールリップを有するものとしても良い。
この構成の場合、芯金に固着された弾性部材のシールリップがスリンガに接することにより、封入潤滑剤の漏れ防止や外部からの塵埃，泥水の進入防止を果たすことができ、密封性の高いものとなる。このような高密封性のある密封手段の場合に、上記スリンガ内面に上記接着剤の薄膜を採用することで、そのスリンガ嵌合面の漏れ防止が効果的となり、より一層高度な密封性が確保できる。 In the present invention, the elastic member may be a shall which have a sealing lip in contact with the upper Symbol slinger.
In this configuration, the sealing lip of the elastic member fixed to the metal core comes into contact with the slinger, so that the sealed lubricant can be prevented from leaking and dust and muddy water can be prevented from entering from outside. It becomes. In the case of such sealing means with high sealing performance, the use of the adhesive thin film on the inner surface of the slinger effectively prevents leakage of the slinger fitting surface and ensures a higher level of sealing performance. it can.

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体と、上記外方部材と内方部材との間の環状空間の両端をそれぞれ密封する一対の密封手段とを備え、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、上記いずれかの密封手段を、内方部材の外周に嵌合したスリンガを有するものとし、このスリンガを有する密封手段は、スリンガに対向して外方部材の内径面に嵌合する芯金と、この芯金に加硫接着剤を用いて一体に固着された弾性部材とを有し、上記スリンガの内径面に、フェノール系の加硫接着剤を固化してなる薄膜を形成し、この薄膜を形成する加硫接着剤として、上記弾性部材を固着する加硫接着剤を用いたため、スリンガの嵌合部に高度な形状精度を要求することなく、嵌合部の漏れを防止して、十分な密封性能を確保することができる。
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 that includes a rolling element and a pair of sealing means that seals both ends of the annular space between the outer member and the inner member, and supports the wheel rotatably with respect to the vehicle body. Any one of the sealing means has a slinger fitted to the outer periphery of the inner member, and the sealing means having the slinger has a core metal fitted to the inner diameter surface of the outer member facing the slinger, and this and an elastic member fixed integrally with the vulcanization adhesive to the metal core, the inner diameter surface of the slinger, to form a thin film ing to solidify the vulcanization adhesive phenolic, the thin film as it formed vulcanization Chakuzai, vulcanization you fixing the elastic member Since with can without requiring a high degree of shape accuracy in the fitting portion of the slinger, to prevent leakage of the fitting portion, to ensure sufficient sealing performance.

この発明の第１の実施形態を図１と共に説明する。この実施形態の車輪用軸受装置は、第１世代に分類されるものである。この車輪用軸受装置は、内周に複列の軌道面４を有する外方部材１と、これら軌道面４にそれぞれ対向する軌道面５を有する内方部材２と、これら複列の軌道面４，５間に介在する複列の転動体３とを備える。内方部材２は２つの軸受内輪２Ａを軸方向に並べた分割型のものである。転動体３はボールからなり、各列毎に保持器６で保持されている。この車輪用軸受装置は、複列のアンギュラ玉軸受とされ、各軌道面４，５は、断面円弧状とされて接触角が背面合わせとなるように形成されている。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７，７で密封されている。   A first embodiment of the present invention will be described with reference to FIG. The wheel bearing device of this embodiment is classified into the first generation. The wheel bearing device includes an outer member 1 having a double row raceway surface 4 on an inner periphery, an inner member 2 having a raceway surface 5 facing each of the raceway surfaces 4, and the double row raceway surfaces 4. , 5 and a double row rolling element 3 interposed therebetween. The inner member 2 is a split type in which two bearing inner rings 2A are arranged in the axial direction. The rolling elements 3 are formed of balls and are held by the cage 6 for each row. This wheel bearing device is a double row angular contact ball bearing, and each raceway surface 4, 5 is formed in a circular arc shape in cross section so that the contact angle is back to back. 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 7.

両側の密封手段７は、図１（Ｂ）に拡大断面図で示すように、内方部材２の外周に嵌合するスリンガ８と、このスリンガ８に対向して外方部材１の内径面に嵌合する芯金９と、上記スリンガ８に先端が接触する複数のシールリップ１０ａ，１０ｂ，１０ｃを有し上記芯金９に一体に固着された弾性部材１０とで構成される。スリンガ８は円筒部８ａと立板部８ｂとでなる断面Ｌ字状のものとされ、円筒部８ａの内径面には接着剤からなる薄膜１１が形成されている。この場合の接着剤としてはフェノール系の加硫接着剤が用いられる。上記円筒部８ａを内方部材２の外周に圧入することにより、スリンガ８が内方部材１の外周に固定される。
密封手段７の芯金９は、円筒部９ａと立板部９ｂとでなる断面Ｌ字状とされ、円筒部９ａで外方部材１の内周に嵌合して取付けられる。弾性部材１０の上記複数のシールリップ１０ａ，１０ｂ，１０ｃのうち、２つのシールリップ１０ａ，１０ｂは、スリンガ８の円筒部８ａの外径面からなるシール面８ａａに先端が接し、残り一つのシールリップ１０ｃは、スリンガ８の立板部９ｂの内側の面からなるシール面８ｂａに先端が接触する。 As shown in an enlarged cross-sectional view in FIG. 1B, the sealing means 7 on both sides are formed on a slinger 8 fitted to the outer periphery of the inner member 2 and on the inner diameter surface of the outer member 1 so as to face the slinger 8. The cored bar 9 to be fitted and the elastic member 10 having a plurality of seal lips 10a, 10b, 10c whose tips contact the slinger 8 are fixed to the cored bar 9 integrally. The slinger 8 has an L-shaped cross section composed of a cylindrical portion 8a and a standing plate portion 8b, and a thin film 11 made of an adhesive is formed on the inner diameter surface of the cylindrical portion 8a. As the adhesive agent when phenolic vulcanization agent is used. The slinger 8 is fixed to the outer periphery of the inner member 1 by press-fitting the cylindrical portion 8 a into the outer periphery of the inner member 2.
The metal core 9 of the sealing means 7 has an L-shaped cross section composed of a cylindrical portion 9a and a standing plate portion 9b, and is fitted and attached to the inner periphery of the outer member 1 with the cylindrical portion 9a. Of the plurality of seal lips 10a, 10b, 10c of the elastic member 10, the two seal lips 10a, 10b are in contact with the seal surface 8aa formed of the outer diameter surface of the cylindrical portion 8a of the slinger 8, and the remaining one seal The tip of the lip 10c comes into contact with a seal surface 8ba which is an inner surface of the standing plate portion 9b of the slinger 8.

この構成の車輪用軸受装置によると、密封手段７におけるシールリップ１０ａ，１０ｂ，１０ｃのうち、最内側のシールリップ１０ａが封入潤滑剤の漏れ防止を行い、他のシールリップ１０ｂ，１０ｃが外部からの塵埃，泥水の進入を防止する。密封手段７を構成するスリンガ８は、圧入部となる円筒部８ａの内径面に接着剤からなる薄膜１１が形成されているので、この円筒部８ａを内方部材１の外周に圧入したときに、内方部材１の外周の圧入面やスリンガ円筒部８ａの内径面における凹部、真円度等の形状不備部、および深さを伴う軸方向貫通傷を埋める役割を上記薄膜１１が果たす。そのため、スリンガ８の圧入面からの漏れが生じず、上記複数のシールリップ１０ａ，１０ｂ，１０ｃとスリンガ８とでなる組み合わせ形式の密封手段７の優れたシール機能を発揮させ、十分な密封機能を確保することができる。   According to the wheel bearing device of this configuration, of the seal lips 10a, 10b, 10c in the sealing means 7, the innermost seal lip 10a prevents leakage of the enclosed lubricant, and the other seal lips 10b, 10c are externally provided. Prevents dust and muddy water from entering. The slinger 8 constituting the sealing means 7 is formed with the thin film 11 made of an adhesive on the inner surface of the cylindrical portion 8a serving as a press-fitting portion. Therefore, when the cylindrical portion 8a is press-fitted into the outer periphery of the inner member 1. The thin film 11 plays a role of filling in the press-fit surface on the outer periphery of the inner member 1 and the concave portion on the inner diameter surface of the slinger cylindrical portion 8a, the shape defect portion such as roundness, and the axial penetrating flaw with depth. Therefore, leakage from the press-fitting surface of the slinger 8 does not occur, and the excellent sealing function of the sealing means 7 of the combination type composed of the plurality of seal lips 10a, 10b, 10c and the slinger 8 is exhibited, and a sufficient sealing function is provided. Can be secured.

また、スリンガ８は密封手段７の構成部材の一部であり、密封手段７の全体製造工程で製造できて、芯金９に弾性部材１０を接着するのに使用する接着剤を、上記薄膜１１の形成用の接着剤として使用できる。そのため、薄膜１１をスリンガ８に形成するための新規設備が不要であり、安価に製造できる。芯金９に弾性部材１０を接着するのに使用する接着剤を利用する上で、上記のように加硫接着剤を用いる。
また、例えば合成樹脂の射出成形の薄膜とする場合に比べて、薄い膜厚を容易に作ることができる。そのため、スリンガ８の嵌合性を低下させない必要最小限の膜厚に成形することができる。接着剤の代わりにシーラント剤を用いると、スリンガ８に薄膜を形成して固化させた後に、内方部材２に嵌合させるときにシーラント剤に剥がれが生じるが、接着剤の薄膜１１であると、このような嵌合作業時の剥がれの問題も生じない。 The slinger 8 is a part of the constituent member of the sealing means 7, and can be manufactured in the entire manufacturing process of the sealing means 7, and an adhesive used for bonding the elastic member 10 to the core metal 9 is used as the thin film 11. Can be used as an adhesive. Therefore, a new facility for forming the thin film 11 on the slinger 8 is unnecessary and can be manufactured at low cost. In using the adhesive used the elastic member 10 to adhere to the core 9, Ru using vulcanizable adhesive as described above.
Further, for example, a thin film thickness can be easily formed as compared with the case of using a synthetic resin injection-molded thin film. Therefore, the slinger 8 can be formed to the minimum necessary film thickness that does not deteriorate the fitting property. When a sealant is used instead of an adhesive, the thin film is formed on the slinger 8 and solidified, and then the sealant is peeled off when fitted to the inner member 2. Such a problem of peeling during the fitting operation does not occur.

図２はこの発明の第２の実施形態を示す。この車輪用軸受装置は、第３世代の内輪回転タイプで、かつ従動輪支持用とした例である。
この実施形態の場合、外方部材１は、固定側の部材となるものであって、車体取付フランジ１ａを有する一体の部材である。内方部材２は、回転側の部材なるものであって、車輪取付フランジ２ａを有するハブ輪２Ｂと、このハブ輪２Ｂの端部外径に嵌合した別体の内輪構成部材２Ｃとで構成され、ハブ輪２Ｂおよび内輪構成部材２Ｃに各列の軌道面５，５がそれぞれ形成される。車輪取付フランジ２ａは内方部材２の一端に位置して、外方部材１の円筒部の外径面よりも外径側に突出するように形成されている。車輪取付フランジ２ａには、車輪（図示せず）がボルト１４で取付けられる。内輪構成部材２Ｃは、ハブ輪２Ｂに設けられた加締部でハブ輪２Ｂに軸方向に締め付け固定される。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７，７Ａで密封される。 FIG. 2 shows a second embodiment of the present invention. This wheel bearing device is an example of a third generation inner ring rotating type and for supporting a driven wheel.
In the case of this embodiment, the outer member 1 is a member on the fixed side, and is an integral member having a vehicle body mounting flange 1a. The inner member 2 is a member on the rotation side, and includes a hub wheel 2B having a wheel mounting flange 2a and a separate inner ring component 2C fitted to the outer diameter of the end of the hub wheel 2B. Then, the raceway surfaces 5 and 5 of each row are formed on the hub wheel 2B and the inner ring component 2C, respectively. The wheel mounting flange 2 a is located at one end of the inner member 2 and is formed so as to protrude to the outer diameter side from the outer diameter surface of the cylindrical portion of the outer member 1. A wheel (not shown) is attached to the wheel attachment flange 2a with bolts 14. The inner ring constituent member 2C is fastened and fixed to the hub wheel 2B in the axial direction by a caulking portion provided on the hub wheel 2B. 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 7A.

これら一対の密封手段７，７Ａのうち、インボード側の密封手段７の構成が第１の実施形態のものと同様とされており、第１の実施形態の場合と同様に、スリンガの嵌合面からの漏れが生じず、優れた密封機能を確保することができる。
その他の構成，効果は、図１に示す第１の実施形態と同じであり、対応部分に同一符号を付してその説明を省略する。 Of these pair of sealing means 7 and 7A, the configuration of the sealing means 7 on the inboard side is the same as that of the first embodiment, and as with the case of the first embodiment, the slinger is fitted. Leakage from the surface does not occur, and an excellent sealing function can be ensured.
Other configurations and effects are the same as those of the first embodiment shown in FIG. 1, and the corresponding parts are denoted by the same reference numerals and the description thereof is omitted.

図３，図４は、それぞれこの発明を円すいころ軸受型の車輪用軸受装置に適用した各実施形態を示す。図２の実施形態は、第１世代型のものであり、転動体３に円錐ころを用いた他は、第１の実施形態と同じである。第１の実施形態と対応する部分は、同一符号を付してある。   3 and 4 show embodiments in which the present invention is applied to a tapered roller bearing type wheel bearing device. The embodiment of FIG. 2 is of the first generation type, and is the same as the first embodiment except that a tapered roller is used as the rolling element 3. Portions corresponding to those in the first embodiment are denoted by the same reference numerals.

図４は、円すいころ軸受型で第２世代の内輪回転タイプとした例であり、外方部材１が外周に車体取付フランジ１ａを有している。その他の構成は図３に示す第３の実施形態と同じである。第１，第３の実施形態と対応する部分は、同一符号を付してある。   FIG. 4 is an example of a tapered roller bearing type and a second generation inner ring rotating type, and the outer member 1 has a vehicle body mounting flange 1a on the outer periphery. Other configurations are the same as those of the third embodiment shown in FIG. Portions corresponding to those in the first and third embodiments are denoted by the same reference numerals.

なお、この発明は、転動体３の形式を問わずに適用でき、例えば上記各実施形態において、アンギュラ玉軸受形式とした各例を円すいころ軸受形式としても、また円すいころ軸受形式とした各例をアンギュラ玉軸受形式としても良い。   The present invention can be applied regardless of the type of the rolling element 3. For example, in each of the above embodiments, each example of the angular ball bearing type is a tapered roller bearing type or each example of a tapered roller bearing type. May be an angular ball bearing type.

（Ａ）はこの発明の第１の実施形態にかかる車輪用軸受装置の断面図、（Ｂ）はその密封手段の拡大断面図である。(A) is sectional drawing of the wheel bearing apparatus concerning 1st Embodiment of this invention, (B) is an expanded sectional view of the sealing means. この発明の第２の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 2nd Embodiment of this invention. この発明の第３の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 3rd Embodiment of this invention. この発明の第４の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 4th Embodiment of this invention. 従来例の断面図である。It is sectional drawing of a prior art example. 従来例における一方の密封手段の拡大断面図である。It is an expanded sectional view of one sealing means in a conventional example.

符号の説明Explanation of symbols

１…外方部材
２…内方部材
３…転動体
４，５…軌道面
７…密封手段
８…スリンガ
９…芯金
１０…弾性部材
１０ａ〜１０ｃ…シールリップ
１１…薄膜 DESCRIPTION OF SYMBOLS 1 ... Outer member 2 ... Inner member 3 ... Rolling element 4, 5 ... Track surface 7 ... Sealing means 8 ... Slinger 9 ... Core metal 10 ... Elastic member 10a-10c ... Seal lip 11 ... Thin film

Claims (2)

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、上記外方部材と内方部材との間の環状空間の両端をそれぞれ密封する一対の密封手段とを備え、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、
上記いずれかの密封手段を、内方部材の外周に嵌合したスリンガを有するものとし、このスリンガを有する密封手段は、スリンガに対向して外方部材の内径面に嵌合する芯金と、この芯金に加硫接着剤を用いて一体に固着された弾性部材とを有し、上記スリンガの内径面に、フェノール系の加硫接着剤を固化してなる薄膜を形成し、この薄膜を形成する加硫接着剤として、上記弾性部材を固着する加硫接着剤を用い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, a double-row rolling element interposed between the opposing raceway surfaces, and the outer member; In a wheel bearing device that includes a pair of sealing means for sealing both ends of the annular space between the inner member and the wheel, and that rotatably supports the wheel with respect to the vehicle body,
Any one of the above-mentioned sealing means has a slinger fitted to the outer periphery of the inner member, and the sealing means having this slinger has a core metal fitted to the inner diameter surface of the outer member facing the slinger, and an elastic member fixed integrally with the vulcanization adhesive on the metal core, the inner diameter surface of the slinger, to form a thin film ing by solidifying the phenolic vulcanization adhesive, the thin film as vulcanization Chakuzai that form a wheel bearing apparatus characterized by using a vulcanizable adhesive you fixing the elastic member. 請求項１において、上記弾性部材は上記スリンガに接するシールリップを有するものとした車輪用軸受装置。   2. The wheel bearing device according to claim 1, wherein the elastic member has a seal lip in contact with the slinger.
JP2003375475A 2003-11-05 2003-11-05 Wheel bearing device Expired - Fee Related JP4467282B2 (en)

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