JP4854324B2 - Seal press-fitting method for wheel bearing device - Google Patents

Seal press-fitting method for wheel bearing device Download PDF

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JP4854324B2
JP4854324B2 JP2006043731A JP2006043731A JP4854324B2 JP 4854324 B2 JP4854324 B2 JP 4854324B2 JP 2006043731 A JP2006043731 A JP 2006043731A JP 2006043731 A JP2006043731 A JP 2006043731A JP 4854324 B2 JP4854324 B2 JP 4854324B2
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seal
press
wheel
diameter
outer member
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JP2007224941A (en
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孝幸 乗松
健郎 安達
功 平井
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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
    • F16C43/00—Assembling bearings
    • F16C43/04—Assembling rolling-contact bearings
    • F16C43/045—Mounting or replacing seals
    • 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
    • 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

Description

本発明は、自動車等の車輪を懸架装置に対して回転自在に支承する車輪用軸受装置のシール圧入方法に関し、詳しくは、シールを外方部材の端部内周面に良好に嵌合して装着させ得る車輪用軸受装置のシール圧入方法に関するものである。
The present invention relates to a seal press-fitting method for a bearing device for a wheel that rotatably supports a wheel of an automobile or the like with respect to a suspension device, and more specifically, a seal is fitted and fitted to an inner peripheral surface of an end of an outer member. The present invention relates to a method for press-fitting a seal of a wheel bearing device.

従来から自動車等の車輪を支持する車輪用軸受装置は、車輪を取り付けるためのハブ輪を複列の転がり軸受を介して回転自在に支承するもので、駆動輪用と従動輪用とがある。構造上の理由から、駆動輪用では内輪回転方式が、従動輪用では内輪回転と外輪回転の両方式が一般的に採用されている。また、車輪用軸受装置には、懸架装置を構成するナックルとハブ輪との間に複列アンギュラ玉軸受等からなる車輪用軸受を嵌合させた第１世代と称される構造から、外方部材の外周に直接車体取付フランジまたは車輪取付フランジが形成された第２世代構造、また、ハブ輪の外周に一方の内側転走面が直接形成された第３世代構造、あるいは、ハブ輪と等速自在継手の外側継手部材の外周にそれぞれ内側転走面が直接形成された第４世代構造とに大別されている。   2. Description of the Related Art Conventionally, a wheel bearing device for supporting a wheel of an automobile or the like supports a hub wheel for mounting a wheel rotatably via a double row rolling bearing, and includes a drive wheel and a driven wheel. For structural reasons, an inner ring rotation method is generally used for driving wheels, and an inner ring rotation method and an outer ring rotation method are generally used for driven wheels. Further, the wheel bearing device has a structure called a first generation in which a wheel bearing composed of a double row angular ball bearing or the like is fitted between a knuckle and a hub wheel constituting a suspension device. Second generation structure in which body mounting flange or wheel mounting flange is formed directly on the outer periphery of the member, third generation structure in which one inner rolling surface is directly formed on the outer periphery of the hub wheel, or hub wheel, etc. It is roughly classified into a fourth generation structure in which the inner rolling surface is directly formed on the outer periphery of the outer joint member of the speed universal joint.

これらの軸受部には、軸受内部に封入されたグリースの漏れを防止すると共に、外部から雨水やダスト等の侵入を防止するためにシールが装着されている。こうしたシールが装着された従来の車輪用軸受装置は、例えば特許文献１にて開示されているように、内周に複列の外側転走面が形成された外方部材と、一端部に車輪を取り付けるための車輪取付フランジを一体に有し、外周にこの車輪取付フランジから軸方向に延びる小径段部が形成されたハブ輪、およびこのハブ輪の小径段部に圧入された少なくとも一つの内輪からなり、外周に複列の外側転走面に対向する複列の内側転走面が形成された内方部材と、この内方部材と外方部材の両転走面間に保持器を介して転動自在に収容された複列の転動体と、外方部材の端部に装着され、ハブ輪に摺接する複数のサイドリップを一体に有するシールとを有している。   These bearing portions are fitted with seals to prevent leakage of grease sealed inside the bearings and to prevent intrusion of rainwater, dust and the like from the outside. For example, as disclosed in Patent Document 1, a conventional wheel bearing device equipped with such a seal includes an outer member having a double row outer rolling surface formed on the inner periphery, and a wheel at one end. A hub wheel integrally having a wheel mounting flange for mounting a wheel and having a small-diameter step portion extending in the axial direction from the wheel mounting flange on the outer periphery, and at least one inner ring press-fitted into the small-diameter step portion of the hub ring An inner member having a double-row inner rolling surface opposite the double-row outer rolling surface on the outer periphery, and a cage between the inner and outer members. And a double row rolling element housed so as to be freely rollable, and a seal that is attached to the end of the outer member and integrally includes a plurality of side lips that are in sliding contact with the hub wheel.

然るに、車輪用軸受装置の製造過程において、シールを外方部材に装着させるべく、一般に、当該シールの最も外側にあるサイドリップの外径と芯金の外径との間に圧入装置の治具を当接させつつ荷重を付与する工程を有していた。こうして端部にシールが装着された外方部材に内方部材を組み付ければ、複数のサイドリップ及びグリースリップがハブ輪に摺接することとなり、シールがなされるよう構成されていた。
特開２００４−６０７５１号公報 However, in the manufacturing process of the wheel bearing device, in order to attach the seal to the outer member, generally, the jig of the press-fitting device is placed between the outer diameter of the outermost side lip and the outer diameter of the cored bar. And a step of applying a load while abutting. If the inner member is assembled to the outer member having the seal attached to the end in this way, the plurality of side lips and grease lips are brought into sliding contact with the hub wheel, and the seal is made.
JP 2004-60751 A

しかしながら、上記の如き車輪用軸受装置においては、シールを外方部材の端部に装着させるためには、最も外側にあるサイドリップの外径と芯金の外径との間に圧入装置の治具を当接させつつ荷重を付与する必要があるが、芯金に直接治具が当接することとなり、芯金に傷等が付与される虞があった。また、治具の当接時、圧入装置の治具がサイドリップのうち最も外側にあるサイドリップと干渉して、破損させてしまう虞もあった。   However, in the wheel bearing device as described above, in order to attach the seal to the end portion of the outer member, the press-fitting device is set between the outer diameter of the outermost side lip and the outer diameter of the metal core. Although it is necessary to apply a load while abutting the tool, there is a concern that the jig directly abuts against the core metal, and scratches or the like may be imparted to the core metal. Further, when the jig is in contact, the jig of the press-fitting device may interfere with the outermost side lip of the side lips and may be damaged.

本発明は、このような従来の問題に鑑みてなされたもので、シールを外方部材の端部内周面に良好に嵌合して装着させ得る車輪用軸受装置のシール圧入方法を提供することを目的とする。
The present invention, such has been made in view of the conventional problems, to provide a seal with the outer wheel bearing equipment method of sealing press fit of the end portion inner peripheral surface capable of mounting satisfactorily fitted member For the purpose.

係る目的を達成すべく、本発明の請求項１に記載の発明は、内周に複列の外側転走面が形成された外方部材と、一端部に車輪を取り付けるための車輪取付フランジを一体に有し、外周にこの車輪取付フランジから軸方向に延びる小径段部が形成されたハブ輪、およびこのハブ輪の小径段部に圧入された少なくとも一つの内輪からなり、外周に前記複列の外側転走面に対向する複列の内側転走面が形成された内方部材と、この内方部材と前記外方部材の両転走面間に保持器を介して転動自在に収容された複列の転動体と、前記外方部材の端部に装着され、前記ハブ輪に摺接する複数のサイドリップを一体に有するシールとを備え、前記シールが、前記外方部材に内嵌される芯金と、該芯金に一体に加硫接着されたシール部材とから成り、該シール部材に前記複数のサイドリップが形成されるとともに、当該サイドリップのうち最も外側にあるサイドリップの基部から外径方向に延びて芯金を覆う覆い部を有し、且つ、最も外側にあるサイドリップの外径より前記覆い部の外径の方が大きく設定されたものであり、前記シールが前記ハブ輪に摺接することで、前記サイドリップが前記芯金の嵌合部内径より小径から大径になる車輪用軸受装置のシール圧入方法であって、圧入端面を上方に向けた状態にて前記外方部材を載置面上に載置させ、当該外方部材の端部内周面に前記シールをセットすると共に、前記サイドリップの外径と覆い部の外径との間の部位に圧入装置の略円環状の当接面を有する治具を当接させつつ前記圧入装置を駆動させて当該治具を下降させることにより、前記当接面が当接した部位に下向きの荷重を付与させ、前記シールを前記外方部材の端部内周面に嵌合することを特徴とする。
 According to an aspect of an invention of claim 1 of the present invention, an outer member outer rolling run surface double row is formed on the inner periphery, the wheel mounting flange for mounting a wheel at one end A hub wheel having a small diameter step portion extending in the axial direction from the wheel mounting flange on the outer periphery, and at least one inner ring press-fitted into the small diameter step portion of the hub wheel, An inner member in which a double row inner rolling surface facing the outer rolling surface of the inner member is formed, and the inner member and the outer member are accommodated between the rolling surfaces of the inner member and the outer member via a cage. A double row rolling element, and a seal that is attached to an end portion of the outer member and integrally includes a plurality of side lips that are in sliding contact with the hub wheel, and the seal is fitted in the outer member. And a seal member integrally vulcanized and bonded to the core metal, A plurality of side lips formed on the member, and a covering portion extending from the base of the outermost side lip of the side lip to the outer diameter direction to cover the core metal, and the outermost side lip The outer diameter of the cover portion is set to be larger than the outer diameter of the lip, and the side lip is larger than the inner diameter of the fitting portion of the cored bar when the seal is in sliding contact with the hub wheel. A method for press-fitting a bearing device for a wheel having a diameter, wherein the outer member is placed on a placement surface in a state in which a press-fit end surface is directed upward, and the outer member is placed on an inner peripheral surface of an end portion of the outer member. A seal is set, and the press-fitting device is driven while a jig having a substantially annular contact surface of the press-fitting device is brought into contact with a portion between the outer diameter of the side lip and the outer diameter of the cover portion. The tool is lowered by lowering the jig. Face in contact with the site to impart a downward load, characterized by fitting the seal inner peripheral surface of an end portion of the outer member.

本発明に係る車輪用軸受装置のシール圧入方法は、内周に複列の外側転走面が形成された外方部材と、一端部に車輪を取り付けるための車輪取付フランジを一体に有し、外周にこの車輪取付フランジから軸方向に延びる小径段部が形成されたハブ輪、およびこのハブ輪の小径段部に圧入された少なくとも一つの内輪からなり、外周に前記複列の外側転走面に対向する複列の内側転走面が形成された内方部材と、この内方部材と前記外方部材の両転走面間に保持器を介して転動自在に収容された複列の転動体と、前記外方部材の端部に装着され、前記ハブ輪に摺接する複数のサイドリップを一体に有するシールとを備え、前記シールが、前記外方部材に内嵌される芯金と、該芯金に一体に加硫接着されたシール部材とから成り、該シール部材に前記複数のサイドリップが形成されるとともに、当該サイドリップのうち最も外側にあるサイドリップの基部から外径方向に延びて芯金を覆う覆い部を有し、且つ、最も外側にあるサイドリップの外径より前記覆い部の外径の方が大きく設定されたものであり、前記シールが前記ハブ輪に摺接することで、前記サイドリップが前記芯金の嵌合部内径より小径から大径になる車輪用軸受装置のシール圧入方法であって、圧入端面を上方に向けた状態にて前記外方部材を載置面上に載置させ、当該外方部材の端部内周面に前記シールをセットすると共に、前記サイドリップの外径と覆い部の外径との間の部位に圧入装置の略円環状の当接面を有する治具を当接させつつ前記圧入装置を駆動させて当該治具を下降させることにより、前記当接面が当接した部位に下向きの荷重を付与させ、前記シールを前記外方部材の端部内周面に嵌合するので、最も外側にあるサイドリップの外径より覆い部の外径の方が大きく設定されているため、覆い部に対してサイドリップとの干渉を避けつつ圧入装置の治具を当接させることができ、シールを外方部材の端部内周面に良好に嵌合して装着させ得る車輪用軸受装置を提供することができる。
Seal press fitting method of a wheel bearing equipment according to the present invention includes an outer member outer rolling run surface double row is formed on the inner periphery, the wheel mounting flange for mounting a wheel at one end integrally A hub wheel having a small-diameter step portion extending in an axial direction from the wheel mounting flange on the outer periphery, and at least one inner ring press-fitted into the small-diameter step portion of the hub wheel, and the double row outer rolling on the outer periphery. An inner member in which a double row inner rolling surface facing the surface is formed, and a double row accommodated between the rolling surfaces of the inner member and the outer member via a retainer so as to roll freely. A rolling element and a seal that is attached to an end of the outer member and integrally includes a plurality of side lips that are in sliding contact with the hub wheel, and the core is fitted into the outer member. And a sealing member integrally vulcanized and bonded to the core metal, A plurality of side lips are formed, and a cover portion that extends in the outer diameter direction from the base portion of the outermost side lip among the side lips and covers the cored bar is provided, and the outermost side lip The outer diameter of the cover portion is set to be larger than the outer diameter, and the side lip is changed from a smaller diameter to a larger diameter than the inner diameter of the fitting portion of the metal core by the seal being in sliding contact with the hub wheel. The wheel bearing device is a seal press-fitting method, wherein the outer member is placed on a placement surface with the press-fit end face facing upward, and the seal is placed on the inner peripheral surface of the end of the outer member. In addition, the press-fitting device is driven while the jig having a substantially annular contact surface of the press-fitting device is brought into contact with a portion between the outer diameter of the side lip and the outer diameter of the cover portion. By lowering the tool, the contact surface Since the downward load is applied to the part and the seal is fitted to the inner peripheral surface of the end portion of the outer member, the outer diameter of the cover portion is set larger than the outer diameter of the outermost side lip. Therefore, the wheel of the press-fitting device can be brought into contact with the cover portion while avoiding interference with the side lip, and the seal can be fitted and fitted to the inner peripheral surface of the end portion of the outer member. A bearing device can be provided.

内周に複列の外側転走面が形成された外方部材と、一端部に車輪を取り付けるための車輪取付フランジを一体に有し、外周にこの車輪取付フランジから軸方向に延びる小径段部が形成されたハブ輪、およびこのハブ輪の小径段部に圧入された少なくとも一つの内輪からなり、外周に前記複列の外側転走面に対向する複列の内側転走面が形成された内方部材と、この内方部材と前記外方部材の両転走面間に保持器を介して転動自在に収容された複列の転動体と、前記外方部材の端部に装着され、前記ハブ輪に摺接する複数のサイドリップを一体に有するシールとを備え、前記シールが、前記外方部材に内嵌される芯金と、該芯金に一体に加硫接着されたシール部材とから成り、該シール部材に前記複数のサイドリップが形成されるとともに、当該サイドリップのうち最も外側にあるサイドリップの基部から外径方向に延びて芯金を覆う覆い部を有し、且つ、最も外側にあるサイドリップの外径より前記覆い部の外径の方が大きく設定されたものであり、前記シールが前記ハブ輪に摺接することで、前記サイドリップが前記芯金の嵌合部内径より小径から大径になる車輪用軸受装置のシール圧入方法であって、圧入端面を上方に向けた状態にて前記外方部材を載置面上に載置させ、当該外方部材の端部内周面に前記シールをセットすると共に、前記サイドリップの外径と覆い部の外径との間の部位に圧入装置の略円環状の当接面を有する治具を当接させつつ前記圧入装置を駆動させて当該治具を下降させることにより、前記当接面が当接した部位に下向きの荷重を付与させ、前記シールを前記外方部材の端部内周面に嵌合する。
An outer member having a double row outer raceway formed on the inner periphery, and a wheel mounting flange for mounting a wheel on one end are integrally formed, and a small-diameter step portion extending axially from the wheel mounting flange on the outer periphery. And at least one inner ring press-fitted into a small-diameter step portion of the hub ring, and a double row inner rolling surface facing the double row outer rolling surface is formed on the outer periphery. An inner member, a double-row rolling element housed between the rolling surfaces of the inner member and the outer member via a cage, are mounted on the end of the outer member. A seal integrally including a plurality of side lips that are in sliding contact with the hub wheel, and the seal is fitted into the outer member, and the seal member is integrally vulcanized and bonded to the core The plurality of side lips are formed on the seal member, The side lip has a cover portion that extends in the outer diameter direction from the base portion of the outermost side lip to cover the cored bar, and the outer diameter of the cover portion is larger than the outer diameter of the outermost side lip. A seal press-fitting method for a wheel bearing device in which the side lip is changed from a smaller diameter to a larger diameter than an inner diameter of a fitting portion of the core metal when the seal is in sliding contact with the hub wheel. The outer member is mounted on the mounting surface with the press-fitting end surface facing upward, the seal is set on the inner peripheral surface of the end portion of the outer member, and the outer diameter and the cover of the side lip are covered. The abutting surface is lowered by driving the press-fitting device while lowering the jig while abutting a jig having a substantially annular abutting surface of the press-fitting device on a portion between the outer diameter of the part. Applying a downward load to the contacted part, the seal Fitted on the end portion inner peripheral surface of the outer member.

以下、本発明の実施の形態を図面に基づいて詳細に説明する。
図１は、本発明に係る車輪用軸受装置の一実施形態を示す縦断面図、図２は、図１の要部拡大図、図３は、図２の外径寸法関係を示す要部拡大図、図４は圧入装置によるシールの圧入工程を示す模式図である。なお、以下の説明では、車両に組み付けた状態で車両の外側寄りとなる側をアウター側（図面左側）、中央寄り側をインナー側（図面右側）という。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a longitudinal sectional view showing an embodiment of a wheel bearing device according to the present invention, FIG. 2 is an enlarged view of a main part of FIG. 1, and FIG. FIG. 4 and FIG. 4 are schematic views showing a seal press-fitting process by a press-fitting device. In the following description, the side closer to the outer side of the vehicle in a state assembled to the vehicle is referred to as the outer side (left side in the drawing), and the side closer to the center is referred to as the inner side (right side in the drawing).

この車輪用軸受装置は従動輪用で、内方部材１と外方部材１０、および両部材１、１０間に転動自在に収容された複列の転動体（ボール）７、７とを備え、第３世代と称される構成をなしている。内方部材１は、ハブ輪２と、このハブ輪２に所定のシメシロを介して圧入された内輪３とからなる。   This wheel bearing device is for a driven wheel, and includes an inner member 1 and an outer member 10, and double row rolling elements (balls) 7 and 7 accommodated between the members 1 and 10 so as to be freely rollable. The third generation is configured. The inner member 1 includes a hub ring 2 and an inner ring 3 that is press-fitted into the hub ring 2 through a predetermined scissors.

ハブ輪２は、一端部に車輪を取り付けるための車輪取付フランジ４を一体に有し、外周に一方（アウター側）の内側転走面２ａと、この内側転走面２ａから軸方向に延びる小径段部２ｂが形成されている。また、車輪取付フランジ４の周方向等配位置にハブボルト４ａが植設されている。内輪３は、外周に他方（インナー側）の内側転走面３ａが形成され、ハブ輪２の小径段部２ｂに所定のシメシロを介して圧入されている。そして、小径段部２ｂの端部を径方向外方に塑性変形させて形成した加締部５によって予圧が付与された状態で、ハブ輪２に対して軸方向に固定されている。   The hub wheel 2 integrally has a wheel mounting flange 4 for mounting a wheel at one end portion, and has one (outer side) inner rolling surface 2a on the outer periphery and a small diameter extending in the axial direction from the inner rolling surface 2a. A step 2b is formed. Further, hub bolts 4 a are implanted at circumferentially equidistant positions of the wheel mounting flange 4. The inner ring 3 is formed with the other (inner side) inner rolling surface 3a on the outer periphery, and is press-fitted into the small-diameter step portion 2b of the hub ring 2 through a predetermined squeeze. The end portion of the small-diameter step portion 2b is fixed in the axial direction with respect to the hub wheel 2 in a state in which a preload is applied by a caulking portion 5 formed by plastic deformation radially outward.

ハブ輪２はＳ５３Ｃ等の炭素０．４０〜０．８０ｗｔ％を含む中炭素鋼で形成され、後述するシール８のシールランド部となる車輪取付フランジ４の基部から小径段部２ｂに亙って高周波焼入れによって５８〜６４ＨＲＣの範囲に表面が硬化処理されている。なお、加締部５は鍛造後の生のままとされている。一方、内輪３は、ＳＵＪ２等の高炭素クロム鋼で形成され、ズブ焼入れによって芯部まで５８〜６４ＨＲＣの範囲に硬化処理されている。   The hub wheel 2 is formed of medium carbon steel containing 0.40 to 0.80 wt% of carbon such as S53C, and extends from the base of the wheel mounting flange 4 serving as a seal land portion of the seal 8 to be described later to the small diameter step portion 2b. The surface is hardened in the range of 58 to 64 HRC by induction hardening. The caulking portion 5 is left as it is after forging. On the other hand, the inner ring 3 is made of high carbon chrome steel such as SUJ2, and is hardened in the range of 58 to 64 HRC up to the core portion by quenching.

外方部材１０は、外周に懸架装置を構成するナックル（図示せず）に取り付けられるための車体取付フランジ１０ｂを一体に有し、内周に内方部材１の内側転走面２ａ、３ａに対向する複列の外側転走面１０ａ、１０ａが形成されている。これら両転走面１０ａ、２ａおよび１０ａ、３ａ間には保持器６を介して複列の転動体７、７が転動自在に収容されている。この外方部材１０はＳ５３Ｃ等の炭素０．４０〜０．８０ｗｔ％を含む中炭素鋼で形成され、少なくとも複列の外側転走面１０ａ、１０ａが、高周波焼入れによって５８〜６４ＨＲＣの範囲に表面が硬化処理されている。   The outer member 10 integrally has a vehicle body mounting flange 10b to be attached to a knuckle (not shown) constituting a suspension device on the outer periphery, and the inner rolling surfaces 2a and 3a of the inner member 1 on the inner periphery. Opposing double-row outer rolling surfaces 10a and 10a are formed. Between these rolling surfaces 10a, 2a and 10a, 3a, double row rolling elements 7, 7 are accommodated via a cage 6 so as to roll freely. The outer member 10 is formed of medium carbon steel containing carbon 0.40 to 0.80 wt% such as S53C, and at least double row outer rolling surfaces 10a and 10a are surfaced in a range of 58 to 64 HRC by induction hardening. Has been cured.

外方部材１０の両端部にはシール８、９が装着され、外方部材１０と内方部材１との間に形成される環状空間の開口部を密封している。このシール８、９により、軸受内部に封入された潤滑グリースの外部への漏洩と、外部から雨水やダスト等が軸受内部に侵入するのを防止している。   Seals 8 and 9 are attached to both ends of the outer member 10 to seal the opening of the annular space formed between the outer member 10 and the inner member 1. The seals 8 and 9 prevent leakage of the lubricating grease sealed inside the bearing and intrusion of rainwater and dust from the outside into the bearing.

シール８、９のうちインナー側のシール９はスリンガ１５と環状のシール部材１６とからなる。スリンガ１５は、オーステナイト系ステンレス鋼鈑（ＪＩＳ規格のＳＵＳ３０４系等）、あるいは、防錆処理された冷間圧延鋼鈑（ＪＩＳ規格のＳＰＣＣ系等）からプレス加工にて断面が略Ｌ字状に形成され、内輪３に圧入される円筒部１５ａと、この円筒部１５ａから径方向外方に延びる立板部１５ｂとからなる。一方、シール部材１６はスリンガ１５に対向して外方部材１０に装着され、断面略Ｌ字状に形成されているもので、外方部材１０の端部に内嵌される芯金１６ａと、この芯金１６ａに加硫接着されたシール部材１６ｂとからなる。芯金１６ａは、オーステナイト系ステンレス鋼鈑（ＪＩＳ規格のＳＵＳ３０４系等）、あるいは、防錆処理された冷間圧延鋼鈑（ＪＩＳ規格のＳＰＣＣ系等）からプレス加工にて形成されている。一方、シール部材１６ｂはゴム等の弾性部材からなり、スリンガ１５に摺接するサイドリップとラジアルリップを有している。   The seal 9 on the inner side of the seals 8 and 9 includes a slinger 15 and an annular seal member 16. Slinger 15 has a substantially L-shaped cross section by pressing from an austenitic stainless steel plate (JIS standard SUS304, etc.) or a rust-proof cold rolled steel plate (JIS standard SPCC, etc.). A cylindrical portion 15a formed and press-fitted into the inner ring 3 and a standing plate portion 15b extending radially outward from the cylindrical portion 15a. On the other hand, the seal member 16 is attached to the outer member 10 so as to face the slinger 15 and is formed in a substantially L-shaped cross section, and a metal core 16a fitted into an end portion of the outer member 10, It consists of a sealing member 16b vulcanized and bonded to the metal core 16a. The metal core 16a is formed by press working from an austenitic stainless steel plate (JIS standard SUS304 type or the like) or a rust-proof cold rolled steel plate (JIS standard SPCC type or the like). On the other hand, the seal member 16b is made of an elastic member such as rubber and has a side lip and a radial lip that are in sliding contact with the slinger 15.

アウター側のシール８は、図２に拡大して示すように、外方部材１０に内嵌される芯金１１と、この芯金１１に一体に加硫接着されたシール部材１２とからなる。芯金１１は、オーステナイト系ステンレス鋼鈑（ＪＩＳ規格のＳＵＳ３０４系等）や防錆処理された冷間圧延鋼鈑（ＪＩＳ規格のＳＰＣＣ系等）等、耐食性を有する鋼板等をプレス加工にて形成され、外方部材１０の端部内周に内嵌される円筒状の嵌合部１１ａと、この嵌合部１１ａから屈曲して形成され、径方向内方に延びる内側部１１ｂとを備えている。   As shown in an enlarged view in FIG. 2, the outer seal 8 includes a core metal 11 fitted into the outer member 10 and a seal member 12 integrally bonded to the core metal 11 by vulcanization. The metal core 11 is formed by pressing a corrosion-resistant steel plate, such as an austenitic stainless steel plate (JIS standard SUS304, etc.) or a rust-proof cold rolled steel plate (JIS standard SPCC, etc.). And a cylindrical fitting portion 11a fitted into the inner periphery of the end portion of the outer member 10, and an inner portion 11b formed by bending from the fitting portion 11a and extending radially inward. .

一方、シール部材１２は、ニトリルゴム等の合成ゴムからなり、芯金１１の所定範囲に亙って固着されている。シール部材１２は一対のサイドリップ１２ａ、１２ｂと、内側のサイドリップ１２ｂの基部から径方向内方に延びるラジアルリップ１２ｃとを有している。サイドリップ１２ａ、１２ｂは、それぞれ異なった長さで外向きに傾斜して形成され、車輪取付フランジ４の基部に所定のシメシロをもって摺接している。この基部は断面が円弧状の曲面に形成されている。また、ラジアルリップ１２ｃは軸受内方側に傾斜して形成されると共に、所定のシメシロをもって基部の外周面に摺接し、軸受内部に封入されたグリースが外部に流出するのを防止している。   On the other hand, the seal member 12 is made of synthetic rubber such as nitrile rubber and is fixed over a predetermined range of the core metal 11. The seal member 12 has a pair of side lips 12a and 12b and a radial lip 12c extending radially inward from the base of the inner side lip 12b. The side lips 12a and 12b are formed with different lengths and inclined outward, and are in sliding contact with the base of the wheel mounting flange 4 with a predetermined squeeze. This base is formed in a curved surface having a circular arc cross section. The radial lip 12c is formed so as to be inclined toward the inner side of the bearing, and is in sliding contact with the outer peripheral surface of the base portion with a predetermined squeeze to prevent the grease enclosed in the bearing from flowing out.

更に、本実施形態においては、内側部１１ｂと嵌合部１１ａとの間（内側部１１ｂの嵌合部１１ａとの境部）に亙って傾斜部１１ｃが形成されているとともに、サイドリップのうち最も外側にあるサイドリップ１２ａの基部（根元）から外径方向に延びて芯金１１を覆う覆い部１２ｄが形成されている。即ち、覆い部１２ｄは、図示の如く傾斜部１１ｃを覆った状態とされているのである。   Further, in the present embodiment, an inclined portion 11c is formed between the inner portion 11b and the fitting portion 11a (a boundary portion between the inner portion 11b and the fitting portion 11a), and the side lip A cover portion 12 d that extends in the outer diameter direction from the base portion (root) of the outermost side lip 12 a and covers the cored bar 11 is formed. That is, the cover portion 12d is in a state of covering the inclined portion 11c as shown in the drawing.

ここで、本実施形態においては、図３に示すように、最も外側にあるサイドリップ１２ａの外径Ａより覆い部１２ｄの外径Ｂの方が大きく設定されており、これにより、当該サイドリップ１２ａの外径と覆い部１２ｄの外径との間に圧入装置１３の治具１４による圧入工程を良好としている。かかる圧入装置１３は、例えばシール８を外方部材１０の端部に圧入して装着させるためのもので、図４に示すように、治具１４を有して構成されている。この治具１４は、下端に略円環状の当接面１４ａを有しており、この当接面１４ａが上述した覆い部１２ｄ（サイドリップ１２ａの外径Ａと覆い部１２ｄの外径Ｂとの間）に当接し得るようになっている。   Here, in the present embodiment, as shown in FIG. 3, the outer diameter B of the cover portion 12d is set larger than the outer diameter A of the outermost side lip 12a. The press-fitting process by the jig 14 of the press-fitting device 13 is good between the outer diameter of 12a and the outer diameter of the cover portion 12d. The press-fitting device 13 is, for example, for press-fitting the seal 8 to the end portion of the outer member 10 and mounting it, and has a jig 14 as shown in FIG. The jig 14 has a substantially annular contact surface 14a at the lower end, and the contact surface 14a is the above-described cover 12d (the outer diameter A of the side lip 12a and the outer diameter B of the cover 12d. (Between).

然るに、シール８の圧入工程について、図４に基づいて以下に具体的に説明する。
まず、圧入端面を上方に向けた状態にて外方部材１０を載置面Ｆ上に載置させる。そして、当該外方部材１０の端部内周面にシール８をセットするとともに、圧入装置１３の治具１４における当接面１４ａを覆い部１２ｄにおけるサイドリップ１２ａの外径Ａと覆い部１２ｄの外径Ｂとの間に当接させる。 However, the press-fitting process of the seal 8 will be specifically described below with reference to FIG.
First, the outer member 10 is placed on the placement surface F with the press-fit end face facing upward. Then, the seal 8 is set on the inner peripheral surface of the end portion of the outer member 10, and the outer diameter A of the side lip 12a in the covering portion 12d and the outside of the covering portion 12d are covered with the contact surface 14a in the jig 14 of the press-fitting device 13. It is made to contact between diameter B.

かかる状態にて、圧入装置１３を駆動させて治具１４を下降させることにより、当接面１４ａが当接した部位に下向きの荷重を付与させ、芯金１１と共にシール８全体を外方部材１０の端部に内嵌させる。このとき、最も外側にあるサイドリップ１２ａの外径Ａより覆い部１２ｄの外径Ｂの方が大きく設定されているため、覆い部１２ｄに対してサイドリップ１２ａ（勿論、内側のサイドリップ１２ｂも含む）との干渉を避けつつ圧入装置１３の治具１４を当接させることができ、シール８を外方部材１０の端部内周面に良好に嵌合して装着させ得る車輪用軸受装置を提供することができる。   In this state, the press-fitting device 13 is driven to lower the jig 14, thereby applying a downward load to the portion where the abutting surface 14 a abuts, and the entire seal 8 together with the core metal 11 to the outer member 10. It is made to fit inside the end. At this time, since the outer diameter B of the cover portion 12d is set larger than the outer diameter A of the outermost side lip 12a, the side lip 12a (of course, the inner side lip 12b is also included) with respect to the cover portion 12d. A wheel bearing device that can contact the jig 14 of the press-fitting device 13 while avoiding interference with the outer member 10 and can fit the seal 8 to the inner peripheral surface of the end portion 10 of the outer member 10. Can be provided.

また、芯金１１は、外方部材１０の端部内周面に嵌合される嵌合部１１ａと、この嵌合部１１ａから径方向内方に延びる内側部１１ｂとからなり、当該内側部１１ｂと嵌合部１１ａとの間に亘って傾斜部１１ｃを形成するとともに、覆い部１２ｄは当該傾斜部１１ｃを覆った状態としているので、圧入装置１３の治具１４の荷重付与方向に対する覆い部１２ｄの肉厚を増すことができ、シール８を外方部材１０の端部内周面により良好に嵌合して装着させることができる。   The core metal 11 includes a fitting portion 11a fitted to the inner peripheral surface of the end portion of the outer member 10, and an inner portion 11b extending radially inward from the fitting portion 11a. Since the inclined portion 11c is formed between the fitting portion 11a and the cover portion 12d covers the inclined portion 11c, the cover portion 12d with respect to the load application direction of the jig 14 of the press-fitting device 13 is used. , And the seal 8 can be fitted and attached more favorably to the inner circumferential surface of the end portion of the outer member 10.

なお、ここでは、転動体７にボールを使用した複列アンギュラ玉軸受を例示したが、本発明はこれに限らず、転動体７に円錐ころを使用した複列円錐ころ軸受であっても良い。また、本発明に係る車輪用軸受装置は、内輪回転方式であれば、例示した第３世代構造以外にも、例えば、第１世代や第２世代あるいは第４世代構造にも適用することができる。   Here, a double-row angular contact ball bearing using balls as the rolling elements 7 is illustrated, but the present invention is not limited to this, and a double-row tapered roller bearing using tapered rollers as the rolling elements 7 may be used. . Further, the wheel bearing device according to the present invention can be applied to, for example, a first generation, a second generation, or a fourth generation structure in addition to the illustrated third generation structure as long as it is an inner ring rotating system. .

以上、本発明の実施の形態について説明を行ったが、本発明はこうした実施の形態に何等限定されるものではなく、あくまで例示であって、本発明の要旨を逸脱しない範囲内において、さらに種々なる形態で実施し得ることは勿論のことであり、本発明の範囲は、特許請求の範囲の記載によって示され、さらに特許請求の範囲に記載の均等の意味、および範囲内のすべての変更を含む。   The embodiment of the present invention has been described above, but the present invention is not limited to such an embodiment, and is merely an example, and various modifications can be made without departing from the scope of the present invention. Of course, the scope of the present invention is indicated by the description of the scope of claims, and further, the equivalent meanings described in the scope of claims and all modifications within the scope of the scope of the present invention are included. Including.

本発明に係る車輪用軸受装置のシール圧入方法は、内輪回転方式の第１乃至第４世代の車輪用軸受装置に適用できる。 Seal press fitting method of a wheel bearing equipment according to the present invention is applicable to the wheel bearing apparatus of the first to fourth generation inner race rotating type.

本発明に係る車輪用軸受装置の実施形態を示す縦断面図である。It is a longitudinal section showing an embodiment of a wheel bearing device concerning the present invention. 図１の要部拡大図である。It is a principal part enlarged view of FIG. 図２の外径寸法関係を示す要部拡大図である。It is a principal part enlarged view which shows the outer diameter dimension relationship of FIG. 圧入装置によるシールの圧入工程を示す模式図である。It is a schematic diagram which shows the press injection process of the seal | sticker by a press injection apparatus.

符号の説明Explanation of symbols

１・・・・・・・・・・・・内方部材
２・・・・・・・・・・・・ハブ輪
２ａ、３ａ・・・・・・・・内側転走面
２ｂ・・・・・・・・・・・小径段部
３・・・・・・・・・・・・内輪
４・・・・・・・・・・・・車輪取付フランジ
４ａ・・・・・・・・・・・ハブボルト
５・・・・・・・・・・・・加締部
６・・・・・・・・・・・・保持器
７・・・・・・・・・・・・転動体
８・・・・・・・・・・・・アウター側のシール
９・・・・・・・・・・・・インナー側のシール
１０・・・・・・・・・・・外方部材
１０ａ・・・・・・・・・・外側転走面
１０ｂ・・・・・・・・・・車体取付フランジ
１１・・・・・・・・・・・芯金
１１ａ・・・・・・・・・・嵌合部
１１ｂ・・・・・・・・・・内側部
１１ｃ・・・・・・・・・・傾斜部
１２・・・・・・・・・・・シール部材
１２ａ・・・・・・・・・・外側のサイドリップ
１２ｂ・・・・・・・・・・内側のサイドリップ
１２ｃ・・・・・・・・・・ラジアルリップ
１２ｄ・・・・・・・・・・覆い部
１３・・・・・・・・・・・圧入装置
１４・・・・・・・・・・・治具
１４ａ・・・・・・・・・・当接面
１５・・・・・・・・・・・スリンガ
１５ａ・・・・・・・・・・円筒部
１５ｂ・・・・・・・・・・立板部
１６・・・・・・・・・・・シール部材
１６ａ・・・・・・・・・・芯金
１６ｂ・・・・・・・・・・シール部材 1 .... inner member 2 .... hub wheels 2a, 3a ... inward rolling surface 2b ... ... Small diameter step 3 ... Inner ring 4 ... Wheel mounting flange 4a ... ... Hub bolt 5 ..... Clamping part 6 ..... Cage 7 ..... Rolling element 8 ······ Outer side seal 9 ·············· Inner side seal 10 ············ Outer member 10a・ ・ ・ ・ ・ ・ ・ ・ ・ ・ External rolling surface 10b ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Car body mounting flange 11 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Core 11a ・ ・ ・ ・ ・ ・... Fitting part 11b ... Inner part 11c ... Inclined part 2 ... Seal member 12a ... Outer side lip 12b ... Inner side lip 12c ...・ ・ ・ ・ ・ Radial lip 12d ・ ・ ・ ・ ・ ・ Cover 13 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Press-fit device 14 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Jig 14a ・······································· Slinger 15a ······························ Plate portion 16 ... Seal member 16a ... Metal core 16b ... Seal member

Claims (1)

内周に複列の外側転走面が形成された外方部材と、
一端部に車輪を取り付けるための車輪取付フランジを一体に有し、外周にこの車輪取付フランジから軸方向に延びる小径段部が形成されたハブ輪、およびこのハブ輪の小径段部に圧入された少なくとも一つの内輪からなり、外周に前記複列の外側転走面に対向する複列の内側転走面が形成された内方部材と、
この内方部材と前記外方部材の両転走面間に保持器を介して転動自在に収容された複列の転動体と、
前記外方部材の端部に装着され、前記ハブ輪に摺接する複数のサイドリップを一体に有するシールと、
を備え、前記シールが、前記外方部材に内嵌される芯金と、該芯金に一体に加硫接着されたシール部材とから成り、該シール部材に前記複数のサイドリップが形成されるとともに、当該サイドリップのうち最も外側にあるサイドリップの基部から外径方向に延びて芯金を覆う覆い部を有し、且つ、最も外側にあるサイドリップの外径より前記覆い部の外径の方が大きく設定されたものであり、前記シールが前記ハブ輪に摺接することで、前記サイドリップが前記芯金の嵌合部内径より小径から大径になる車輪用軸受装置のシール圧入方法であって、
圧入端面を上方に向けた状態にて前記外方部材を載置面上に載置させ、当該外方部材の端部内周面に前記シールをセットすると共に、
前記サイドリップの外径と覆い部の外径との間の部位に圧入装置の略円環状の当接面を有する治具を当接させつつ前記圧入装置を駆動させて当該治具を下降させることにより、前記当接面が当接した部位に下向きの荷重を付与させ、前記シールを前記外方部材の端部内周面に嵌合することを特徴とする車輪用軸受装置のシール圧入方法。
An outer member having a double row outer raceway formed on the inner periphery;
A hub wheel having a wheel mounting flange for mounting a wheel at one end and a small diameter step portion extending in the axial direction from the wheel mounting flange on the outer periphery, and a small diameter step portion of the hub wheel are press-fitted An inner member formed of at least one inner ring, and formed with a double-row inner rolling surface opposed to the double-row outer rolling surface on the outer periphery;
A double row rolling element housed between the rolling surfaces of the inner member and the outer member so as to be freely rollable via a cage;
A seal that is attached to an end of the outer member and integrally has a plurality of side lips that are in sliding contact with the hub wheel;
And the seal comprises a core metal fitted into the outer member, and a seal member integrally vulcanized and bonded to the core metal, and the plurality of side lips are formed on the seal member. And a cover portion that extends in the outer diameter direction from the base portion of the outermost side lip of the side lip and covers the core metal, and the outer diameter of the cover portion is larger than the outer diameter of the outermost side lip. The seal press-fitting method for a wheel bearing device in which the side lip is changed from a smaller diameter to a larger diameter than the inner diameter of the fitting portion of the core metal when the seal is in sliding contact with the hub wheel. Because
The outer member is placed on the placement surface with the press-fit end face facing upward, and the seal is set on the inner peripheral surface of the end portion of the outer member,
The jig is lowered by driving the press-fitting device while a jig having a substantially annular contact surface of the press-fitting device is brought into contact with a portion between the outer diameter of the side lip and the outer diameter of the cover portion . Thus, a downward load is applied to a portion where the contact surface comes into contact , and the seal is fitted to the inner peripheral surface of the end portion of the outer member.
JP2006043731A 2006-02-21 2006-02-21 Seal press-fitting method for wheel bearing device Active JP4854324B2 (en)

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US9841058B2 (en) 2015-04-29 2017-12-12 Aktiebolaget Skf Assembly procedure of a bearing unit—hub flange
US9903417B2 (en) 2015-04-29 2018-02-27 Aktiebolaget Skf Assembly procedure of a bearing unit—HUB flange
JP2019132380A (en) * 2018-02-01 2019-08-08 株式会社ジェイテクト Seal assembling device and seal assembling method

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JPH09287619A (en) * 1996-02-23 1997-11-04 Nippon Seiko Kk Rolling bearing unit with sealing device
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JP4501324B2 (en) * 2001-08-09 2010-07-14 日本精工株式会社 Assembly method of double row tapered roller bearing unit
JP2004263738A (en) * 2003-02-28 2004-09-24 Nok Corp Sealing device
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