JP2013221548A - Mounting structure of inner ring in wheel bearing device, mounting method thereof and wheel bearing device - Google Patents

Mounting structure of inner ring in wheel bearing device, mounting method thereof and wheel bearing device Download PDF

Info

Publication number
JP2013221548A
JP2013221548A JP2012092343A JP2012092343A JP2013221548A JP 2013221548 A JP2013221548 A JP 2013221548A JP 2012092343 A JP2012092343 A JP 2012092343A JP 2012092343 A JP2012092343 A JP 2012092343A JP 2013221548 A JP2013221548 A JP 2013221548A
Authority
JP
Japan
Prior art keywords
inner ring
ring
wheel
hub
vehicle body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2012092343A
Other languages
Japanese (ja)
Inventor
Yutaka Koma
豊 高麗
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JTEKT Corp
Original Assignee
JTEKT Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JTEKT Corp filed Critical JTEKT Corp
Priority to JP2012092343A priority Critical patent/JP2013221548A/en
Publication of JP2013221548A publication Critical patent/JP2013221548A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F16C35/063—Fixing them on the shaft
    • 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/583—Details of specific parts of races
    • F16C33/586—Details of specific parts of races outside the space between the races, e.g. end faces or bore of inner ring
    • 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
    • F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
    • F16C2240/40—Linear dimensions, e.g. length, radius, thickness, gap
    • F16C2240/42—Groove sizes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00—Articles relating to transporting
    • F16C2326/01—Parts of vehicles in general
    • F16C2326/02—Wheel hubs or castors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/768—Sealings of ball or roller bearings between relatively stationary parts, i.e. static seals

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mounting Of Bearings Or Others (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a mounting structure of an inner ring in a wheel bearing device in which an inner ring material can be prevented from being expanded radially, and to provide a mounting method thereof and the wheel bearing device.SOLUTION: In a mounting structure of an inner ring 7, a wheel bearing device 1 supports a hub ring 6 in a rotatable manner to a vehicle body side via a rolling bearing including the inner ring 7 which rolls rolling elements 4, 5. In the wheel bearing device 1, a hub ring material is inserted into an inner ring material, a vehicle body side end portion of the hub ring material is caulked to a vehicle body side material end face of the inner ring material, and thereby forming a caulking part 62b, and thereby, the inner ring 7 is mounted to the hub ring 6. The inner ring 7 (a second inner ring member 71) includes an annular notch 71c which is opened on its inner circumferential surface and a vehicle body side inner ring end face 71b. Between an axial end face 710c of the notch 71c and an axial end face 620b of the caulking part 62b, a buffer ring 15 is interposed which receives a caulking force from the hub ring 6.

Description

本発明は、車輪用軸受装置における内輪の取付構造及びその取付方法並びに車輪用軸受装置に関し、特に自動車等の車輪を懸架装置に対して回転可能に支持する車輪用軸受装置における内輪の取付構造及びその取付方法並びに車輪用軸受装置に関する。   BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inner ring mounting structure and a mounting method for an inner ring in a wheel bearing device, and more particularly to an inner ring mounting structure in a wheel bearing device for rotatably supporting a wheel of an automobile or the like with respect to a suspension device. The present invention relates to a mounting method and a wheel bearing device.

従来の車輪用軸受装置として、中心軸線の回りに回転可能なハブ輪と、このハブ輪を車体側に回転可能に支持する円すいころ軸受とを備えたものがある（例えば特許文献１）。   2. Description of the Related Art As a conventional wheel bearing device, there is one including a hub ring that can rotate around a central axis and a tapered roller bearing that rotatably supports the hub ring on a vehicle body side (for example, Patent Document 1).

このような車輪用軸受装置において、ハブ輪に対する円すいころ軸受の取り付けは、円すいころ軸受の内輪となる内輪用素材にハブ輪となるハブ輪用素材を挿通させ、このハブ輪用素材の挿通端部を内輪用素材の端面へかしめることにより行われる。   In such a wheel bearing device, the tapered roller bearing is attached to the hub ring by inserting the hub ring material serving as the hub ring into the inner ring material serving as the inner ring of the tapered roller bearing, and the insertion end of the hub ring material. This is done by caulking the part to the end face of the inner ring material.

特開平６−１０９０２７号公報JP-A-6-109027

特許文献１に示す車輪用軸受装置によると、ハブ輪用素材に対する円すいころ軸受（取付前の円すいころ軸受）の取付時（ハブ輪用素材のかしめ時）にハブ輪用素材側から内輪用素材に対するかしめ力がその軸線方向のみならず径方向にも作用し、内輪用素材が径方向に変形（膨張）していた。この内輪用素材の径方向への膨張量が大きい場合には、内輪用素材に発生するフープ応力が大きくなり、車輪用軸受装置の腐食環境下での使用によって取付後の円すいころ軸受の内輪がその延性又は靭性を低下させ、いわゆる応力腐食割れが生じる虞がある。   According to the wheel bearing device shown in Patent Document 1, when the tapered roller bearing (the tapered roller bearing before mounting) is attached to the hub ring material (when the hub ring material is caulked), the material for the inner ring from the hub ring material side is provided. The caulking force on the inner ring acts not only in the axial direction but also in the radial direction, and the inner ring material is deformed (expanded) in the radial direction. When the inner ring material has a large amount of expansion in the radial direction, the hoop stress generated in the inner ring material increases, and the inner ring of the tapered roller bearing after installation is used in a corrosive environment of the wheel bearing device. The ductility or toughness is lowered, and so-called stress corrosion cracking may occur.

本発明の目的は、内輪用素材の径方向への膨張を抑制することができる車輪用軸受装置における内輪の取付構造及びその取付方法並びに車輪用軸受装置を提供することにある。   An object of the present invention is to provide an inner ring mounting structure, a mounting method thereof, and a wheel bearing device in a wheel bearing device capable of suppressing the radial expansion of the inner ring material.

（１）本発明は、上記目的を達成するために、転動体を転動させる内輪を有する転がり軸受を介して車体側にハブ輪を回転可能に支持する車輪用軸受装置において、前記内輪となる内輪用素材に前記ハブ輪となるハブ輪用素材を挿通させ、前記ハブ輪用素材の車体側端部及び車輪側端部のうち車体側端部を前記内輪用素材の車体側素材端面へかしめてかしめ部を形成することにより、前記ハブ輪に前記内輪を取り付ける構造であって、前記内輪は、その内周面及び車体側内輪端面に開口する円環状の切り欠きを有し、前記切り欠きの軸線方向端面と前記かしめ部の軸線方向端面との間に前記ハブ輪からかしめ力を受ける緩衝リングが介在して配置されている車輪用軸受装置における内輪の取付構造を提供する。 (1) In order to achieve the above object, the present invention provides a wheel bearing device that rotatably supports a hub ring on the vehicle body side via a rolling bearing having an inner ring that rolls rolling elements. Insert the hub wheel material to be the hub wheel into the inner ring material, and connect the vehicle body side end portion of the hub wheel material to the vehicle body side material end surface of the inner ring material. A structure in which the inner ring is attached to the hub wheel by forming a caulking portion, the inner ring having an annular notch that opens on an inner peripheral surface and a vehicle body side inner ring end surface, and the notch An inner ring mounting structure in a wheel bearing device is provided in which a buffer ring that receives a caulking force from the hub wheel is interposed between an axial end surface of the caulking portion and an axial end surface of the caulking portion.

（２）本発明は、上記目的を達成するために、上記（１）に記載の内輪の取付構造を用いて構成された車輪用軸受装置を提供する。 (2) In order to achieve the above object, the present invention provides a wheel bearing device configured using the inner ring mounting structure described in (1) above.

（３）本発明は、上記目的を達成するために、転動体を転動させる内輪を有する転がり軸受を介して車体側にハブ輪を回転可能に支持する車輪用軸受装置において、前記内輪となる内輪用素材に前記ハブ輪となるハブ輪用素材を挿通させ、前記ハブ輪用素材の車体側端部及び車輪側端部のうち車体側端部を前記内輪用素材の車体側素材端面へかしめてかしめ部を形成することにより、前記ハブ輪に前記内輪を取り付ける方法であって、前記ハブ輪用素材の前記車体側端部をかしめる以前に、前記かしめ部の形成に伴いかしめ力を受ける緩衝リングに前記ハブ輪用素材を挿通させ、前記内輪用素材にその内周面及び前記車体側素材端面に開口させて予め形成された円環状の切り欠き内に前記緩衝リングの一部を配置する車輪用軸受装置における内輪の取付方法を提供する。 (3) In order to achieve the above object, the present invention provides a wheel bearing device that rotatably supports a hub wheel on the vehicle body side via a rolling bearing having an inner ring that rolls a rolling element. Insert the hub wheel material to be the hub wheel into the inner ring material, and connect the vehicle body side end portion of the hub wheel material to the vehicle body side material end surface of the inner ring material. A method of attaching the inner ring to the hub wheel by forming a caulking part, wherein the caulking force is received along with the formation of the caulking part before the car body side end part of the hub wheel material is caulked. The hub ring material is inserted into the buffer ring, and a part of the buffer ring is arranged in an annular notch formed in advance by opening the inner ring material on the inner peripheral surface and the vehicle body side material end surface. In wheel bearing devices To provide a method of attaching the wheel.

本発明によると、ハブ輪用素材のかしめ時に緩衝リングが切り欠き内で径方向にかしめ力を受け、内輪用素材に対する径方向のかしめ力が緩和される。これにより、内輪用素材の径方向への膨張を抑制することができる。   According to the present invention, when the hub ring material is caulked, the buffer ring receives a caulking force in the radial direction in the notch, and the caulking force in the radial direction on the inner ring material is reduced. Thereby, the expansion | swelling to the radial direction of the raw material for inner rings can be suppressed.

本発明の実施の形態に係る車輪用軸受装置の全体を説明するために示す断面図。Sectional drawing shown in order to demonstrate the whole wheel bearing apparatus which concerns on embodiment of this invention. 図１における車輪用軸受装置のＭ部分（要部）を拡大して示す断面図。Sectional drawing which expands and shows the M part (main part) of the wheel bearing apparatus in FIG. （ａ）〜（ｄ）は、本発明の実施の形態に係る車輪用軸受装置における内輪の取付方法を説明するために示す断面図。（ａ）は軸受組立体とハブ輪用素材との芯合わせ工程を、（ｂ）は軸受組立体の組付工程を、（ｃ）は変形前の緩衝リングの組み付け工程を、また（ｄ）はかしめ部の形成工程をそれぞれ示す。(A)-(d) is sectional drawing shown in order to demonstrate the attachment method of the inner ring | wheel in the wheel bearing apparatus which concerns on embodiment of this invention. (A) is a process for aligning the bearing assembly and the hub wheel material, (b) is a process for assembling the bearing assembly, (c) is a process for assembling the buffer ring before deformation, and (d) The steps of forming the caulking portion are shown. 本発明の実施の形態に係る車輪用軸受装置の要部を変形例として示す断面図。Sectional drawing which shows the principal part of the bearing apparatus for wheels which concerns on embodiment of this invention as a modification.

[実施の形態]
（車輪用軸受装置の全体構成）
図１は車輪用軸受装置の全体を示す。図２は車輪用軸受装置の要部を示す。図１に示すように、車輪用軸受装置１は、例えば駆動輪用軸受装置からなる。車輪用軸受装置１は、中心軸線Ｏの回りに回転可能な内方部材２と、この内方部材２の外周囲に配置された外方部材３と、この外方部材３と内方部材２との間に介在する複列の転動体４，５とを備えている。車輪用軸受装置１は、車体（図示せず）と車輪（図示せず）との間に配置されている。車輪用軸受装置１は、内輪７，外方部材３及び転動体４，５を有する転がり軸受（後述するかしめ部６２ｂの形成後における円すいころ軸受）を介して車体（車両インナ）側にハブ輪６を回転可能に支持する。かしめ部６２ｂの形成前における円すいころ軸受は、後述するパルサーリング９，ＡＢＳセンサ１０，ころ保持器１１・１３及びシール部材１２・１４等と共に軸受組立体Ａ（図３（ａ）〜（ｃ）に示す）を構成する。 [Embodiment]
(Whole configuration of wheel bearing device)
FIG. 1 shows the entire wheel bearing device. FIG. 2 shows a main part of the wheel bearing device. As shown in FIG. 1, the wheel bearing device 1 includes a drive wheel bearing device, for example. The wheel bearing device 1 includes an inner member 2 that is rotatable around a central axis O, an outer member 3 that is disposed on the outer periphery of the inner member 2, and the outer member 3 and the inner member 2. Double-row rolling elements 4 and 5 interposed therebetween. The wheel bearing device 1 is disposed between a vehicle body (not shown) and a wheel (not shown). The wheel bearing device 1 includes a hub wheel on a vehicle body (vehicle inner) side via a rolling bearing (a tapered roller bearing after formation of a caulking portion 62b described later) having an inner ring 7, an outer member 3, and rolling elements 4 and 5. 6 is rotatably supported. The tapered roller bearing before the caulking portion 62b is formed includes a bearing assembly A (FIGS. 3A to 3C) together with a pulsar ring 9, an ABS sensor 10, roller cages 11 and 13, seal members 12 and 14 and the like which will be described later. Configured).

（内方部材２の構成）
内方部材２は、ハブ輪６及び内輪７からなる。内方部材２は、中心軸線Ｏ上に回転可能に配置されている。 (Configuration of the inner member 2)
The inner member 2 includes a hub ring 6 and an inner ring 7. The inner member 2 is rotatably arranged on the central axis O.

ハブ輪６は、各外径が互いに異なる大小２つの胴部６ａ，６ｂ（大径の胴部６ａ，小径の胴部６ｂ）を有する。ハブ輪６は、ドライブシャフト（図示せず）に等速自在継手（図示せず）等を介してトルク伝達可能に連結されている。ハブ輪６は、例えば中炭素鋼からなる円筒状の成形体によって形成されている。ハブ輪６には、中心軸線Ｏに沿って両方向に開口する貫通孔６ｃが設けられている。貫通孔６ｃの内周部には、等速自在継手のステム（図示せず）を連結するためのセレーション（図示せず）が形成されている。   The hub wheel 6 has two large and small body portions 6a and 6b (a large diameter body portion 6a and a small diameter body portion 6b) having different outer diameters. The hub wheel 6 is connected to a drive shaft (not shown) through a constant velocity universal joint (not shown) or the like so that torque can be transmitted. The hub wheel 6 is formed of a cylindrical molded body made of, for example, medium carbon steel. The hub wheel 6 is provided with a through hole 6c that opens in both directions along the central axis O. A serration (not shown) for connecting a stem (not shown) of a constant velocity universal joint is formed on the inner peripheral portion of the through hole 6c.

大径の胴部６ａは、ハブ輪６の車輪側（図１の右側）に配置されている。大径の胴部６ａには、その外周面に車輪側で突出して車輪（図示せず）を取り付けるための円環状の車輪取付用フランジ６０ａが一体に設けられている。車輪取付用フランジ６０ａには、円周方向に並列してハブボルト８を挿通させる複数のボルト挿通孔６００ａ（１個のみ図示）が設けられている。   The large-diameter trunk portion 6a is disposed on the wheel side of the hub wheel 6 (the right side in FIG. 1). The large-diameter trunk portion 6a is integrally provided with an annular wheel mounting flange 60a for projecting on the wheel side to attach a wheel (not shown) to the outer peripheral surface thereof. The wheel mounting flange 60a is provided with a plurality of bolt insertion holes 600a (only one is shown) through which the hub bolts 8 are inserted in parallel in the circumferential direction.

小径の胴部６ｂは、径方向に開口する円環状の凹部６０ｂを外周面に有する。小径の胴部６ｂは、内輪７を挿通してハブ輪６の車体側（図１の左側）に配置されている。小径の胴部６ｂは、軸線方向両端部のうち（車体側端部と車輪側端部）のうち車体側端部を内輪７（第２の内輪部材７１）となる内輪用素材７１Ａ（図３（ａ）に示す）の車体側素材端面７１０Ａ（図３（ａ）に示す）へかしめて（塑性変形させて）かしめ部６２ｂを形成することにより、凹部６０ｂに内輪７を取り付ける。車体側素材端面７１０Ａは、かしめ部６２ｂの形成後に車体側内輪端面７１ｂとなる。かしめ部６２ｂは、軸線方向に開口する円環状の凹部６１ｂを車輪側端面に有する。凹部６１ｂは、かしめ部６２ｂの形成前において凹部６０Ａ（図２に示す）である。凹部６０Ａは、ハブ輪６となるハブ輪用素材６Ａ（図２に示す）における車体側端部の外周面に設けられている。小径の胴部６ｂにおける車体側端部の外周面は、外径を略均一な寸法とする円周面で形成されている。   The small-diameter body 6b has an annular recess 60b that opens in the radial direction on the outer peripheral surface. The small-diameter trunk portion 6b is disposed on the vehicle body side (left side in FIG. 1) of the hub wheel 6 through the inner ring 7. The small-diameter body portion 6b has an inner ring material 71A (FIG. 3) in which the vehicle body side end portion of the both ends in the axial direction (the vehicle body side end portion and the wheel side end portion) becomes the inner ring 7 (second inner ring member 71). The inner ring 7 is attached to the recess 60b by forming a caulking portion 62b by caulking (plastically deforming) the vehicle body side material end surface 710A (shown in FIG. 3A) (shown in (a)). The vehicle body-side material end surface 710A becomes the vehicle body-side inner ring end surface 71b after the caulking portion 62b is formed. The caulking portion 62b has an annular recess 61b that opens in the axial direction on the wheel side end surface. The recess 61b is a recess 60A (shown in FIG. 2) before the caulking portion 62b is formed. The recessed portion 60A is provided on the outer peripheral surface of the end portion on the vehicle body side in the hub wheel material 6A (shown in FIG. 2) to be the hub wheel 6. The outer peripheral surface of the vehicle body side end portion of the small-diameter body portion 6b is formed as a circumferential surface having an outer diameter that is substantially uniform.

一方、内輪７は、第１の内輪部材７０及び第２の内輪部材７１からなる。内輪７は、ハブ輪６の凹部６０ｂ内に取り付けられている。内輪７は、例えば冷間圧延鋼板からなる円筒状の成形体によって形成されている。第１の内輪部材７０及び第２の内輪部材７１は、中心軸線Ｏ方向に互いに並列して配置されている。   On the other hand, the inner ring 7 includes a first inner ring member 70 and a second inner ring member 71. The inner ring 7 is attached in the recess 60 b of the hub ring 6. The inner ring 7 is formed of a cylindrical formed body made of, for example, a cold rolled steel plate. The first inner ring member 70 and the second inner ring member 71 are arranged in parallel with each other in the central axis O direction.

第１の内輪部材７０は、複列の転動体４，５の車輪側列の転動体４を転動させる第１の内側軌道面７０ａ、及びこの第１の内側軌道面７０ａに仕切部７０ｂを介して並列するリング取付面７０ｃを有する。第１の内輪部材７０は、内輪７の車輪側に中心軸線Ｏに沿って配置されている。   The first inner ring member 70 includes a first inner raceway surface 70a for rolling the rolling elements 4 in the wheel side row of the double row rolling elements 4 and 5, and a partition portion 70b on the first inner raceway surface 70a. Via the ring mounting surface 70c. The first inner ring member 70 is disposed along the central axis O on the wheel side of the inner ring 7.

第１の内側軌道面７０ａは、第１の内輪部材７０の車輪側に配置されている。第１の内側軌道面７０ａは、第１の内輪部材７０の外周部に円環状の凹溝７０ｄを形成することにより、その溝底に設けられている。第１の内側軌道面７０ａの外径は、車体側から車輪側に向かって漸次大きくなる寸法に設定されている。   The first inner raceway surface 70 a is disposed on the wheel side of the first inner ring member 70. The first inner raceway surface 70 a is provided at the groove bottom by forming an annular groove 70 d on the outer periphery of the first inner ring member 70. The outer diameter of the first inner raceway surface 70a is set to a dimension that gradually increases from the vehicle body side toward the wheel side.

仕切部７０ｂは、第１の内輪部材７０の軸線方向略中央部に配置されている。仕切部７０ｂは、第１の内側軌道面７０ａの最小外径及びリング取付面７０ｃの外径よりも大きい外径をもつ略均一な円筒状の胴部によって形成されている。   The partition portion 70 b is disposed at a substantially central portion in the axial direction of the first inner ring member 70. The partition 70b is formed by a substantially uniform cylindrical body having an outer diameter larger than the minimum outer diameter of the first inner raceway surface 70a and the outer diameter of the ring mounting surface 70c.

リング取付面７０ｃは、第１の内輪部材７０の車体側に配置されている。リング取付面７０ｃには、円周方向に沿って凹部及び凸部（共に図示せず）を交互に形成してなる回転速度検出用リングとしてのパルサーリング９が圧入して取り付けられている。パルサーリング９としては、例えばフェライト系のステンレス鋼粉を用いた焼結金属が用いられる。   The ring attachment surface 70 c is disposed on the vehicle body side of the first inner ring member 70. A pulsar ring 9 as a rotational speed detection ring formed by alternately forming recesses and protrusions (both not shown) along the circumferential direction is press-fitted and attached to the ring attachment surface 70c. As the pulsar ring 9, for example, a sintered metal using ferritic stainless steel powder is used.

第２の内輪部材７１は、複列の転動体４，５のうち車体側列の転動体５を転動させる第２の内側軌道面７１ａを有する。第２の内輪部材７１は、第１の内輪部材７０の車体側に中心軸線Ｏに沿って配置されている。第２の内輪部材７１には、図２に示すように、その内周面及び車体側内輪端面７１ｂに開口する円環状の切り欠き７１ｃが設けられている。切り欠き７１ｃは、かしめ部６２ｂの形成前において切り欠き７１Ｃ（図３（ａ）に示す）である。   The second inner ring member 71 has a second inner raceway surface 71 a that rolls the rolling elements 5 in the vehicle body side row of the double row rolling elements 4, 5. The second inner ring member 71 is disposed along the central axis O on the vehicle body side of the first inner ring member 70. As shown in FIG. 2, the second inner ring member 71 is provided with an annular notch 71 c that opens to the inner circumferential surface and the vehicle body side inner ring end surface 71 b. The notch 71c is a notch 71C (shown in FIG. 3A) before the caulking portion 62b is formed.

切り欠き７１ｃの軸線方向端面７１０ｃと凹部６１ｂの底面６１０ｂとの間には、ハブ輪用素材６Ａからかしめ力を受けた緩衝リング１５が介在して配置されている。本実施の形態では、かしめ力を受けた後の緩衝リング１５を単に「緩衝リング１５」とし、かしめ力を受ける前の緩衝リング１５を「かしめ部６２ｂの形成前における緩衝リング１５」とする。緩衝リング１５において、内周面１５ａは内径を、また外周面１５ｂは外径をそれぞれ略均一な寸法とする円周面で形成されている。緩衝リング１５の軸線方向一方側端面は、凹部６１ｂの底面６１０ｂに適合する曲面で形成されている。緩衝リング１５の軸線方向他方側端面は、切り欠き７１ｃの軸線方向端面７１０ｃに当接する平面で形成されている。切り欠き７１ｃの軸線方向端面７１０ｃは、かしめ部６２ｂの形成前において軸線方向端面７１０Ｃ（図３（ａ）に示す）である。緩衝リング１５の材料としては、例えば軸受鋼，浸炭鋼が用いられる。緩衝リング１５の軸線方向寸法Ｌ１は、切り欠き７１ｃの軸線方向端面７１０ｃとかしめ部６２ｂの軸線方向端面６２０ｂとの間の寸法Ｌ２（Ｌ２＜Ｌ１）よりも大きい寸法に設定されている。これにより、かしめ部６２ｂの形成時にハブ輪用素材６Ａからのかしめ力がかしめ部６２ｂの形成前における緩衝リング１５を介して軸線方向に内輪用素材７１Ａに付与される。 Between the axial end surface 710c of the notch 71c and the bottom surface 610b of the recess 61b, a buffer ring 15 that receives caulking force from the hub wheel material 6A is disposed. In the present embodiment, the buffer ring 15 after receiving the caulking force is simply referred to as “buffer ring 15”, and the buffer ring 15 before receiving the caulking force is referred to as “buffer ring 15 before the caulking portion 62b is formed”. In the buffer ring 15, the inner peripheral surface 15 a is formed with a circumferential surface having an inner diameter, and the outer peripheral surface 15 b is formed with a circumferential surface having a substantially uniform size. One end surface in the axial direction of the buffer ring 15 is formed as a curved surface that fits the bottom surface 610b of the recess 61b. The other end surface in the axial direction of the buffer ring 15 is formed as a flat surface that contacts the axial end surface 710c of the notch 71c. An axial end surface 710c of the notch 71c is an axial end surface 710C (shown in FIG. 3A) before the caulking portion 62b is formed. As a material of the buffer ring 15, for example, bearing steel or carburized steel is used. Axial dimension L 1 of the cushion ring 15 is set to a larger dimension than the dimension L 2 (L 2 <L 1 ) between the axial end face 620b of the axial end face 710c and the caulking portion 62b of the notch 71c Yes. Thus, the caulking force from the hub wheel material 6A is applied to the inner ring material 71A in the axial direction through the buffer ring 15 before the caulking portion 62b is formed when the caulking portion 62b is formed.

切り欠き７１ｃは、その内周面と緩衝リング１５の外周面との間に介在する円環状の空隙（クリアランス）Ｇを含む。切り欠き７１ｃの切り欠き面（内周面）７１２ｃは、内径を軸線方向端面７１０ｃから開口部７１１ｃに向かって漸次大きくするテーパ面で形成されている。これにより、第２の内輪部材７１に対する切り欠き７１ｃの形成が簡単に行われる。切り欠き面７１２ｃの最大内径ｄ１は、かしめ部６２ｂの外径Ｄ１（Ｄ１＞ｄ１）よりも小さい寸法に設定されている。これにより、かしめ部６２ｂの軸線方向端面６２０ｂが第２の内輪部材７１の軸線方向端面７１ｂに密着することが可能となる。切り欠き面７１２ｃの最小内径ｄ２は、緩衝リング１５の外径Ｄ２（例えばｄ２−Ｄ２＞０．０５ｍｍ）よりも大きい寸法に設定されている。これにより、かしめ部６２ｂの形成前における緩衝リング１５は、かしめ部６２ｂの形成時に切り欠き７１Ｃ（図３（ａ）に示す）内において軸線方向に変形した場合に径方向の変形が許容される。寸法差（ｄ２−Ｄ２）は、ｄ２−Ｄ２＞０．０５ｍｍとしたが、ｄ２−Ｄ２≧０．１ｍｍに設定されていることが望ましい。 The notch 71 c includes an annular gap (clearance) G interposed between the inner peripheral surface thereof and the outer peripheral surface of the buffer ring 15. The notch surface (inner peripheral surface) 712c of the notch 71c is formed as a tapered surface whose inner diameter gradually increases from the axial end surface 710c toward the opening 711c. Thereby, formation of the notch 71c with respect to the 2nd inner ring member 71 is performed easily. The maximum inner diameter d 1 of the notch surface 712c is set to a dimension smaller than the outer diameter D 1 of the caulking portion 62b (D 1> d 1) . Thereby, the axial end surface 620b of the caulking portion 62b can be in close contact with the axial end surface 71b of the second inner ring member 71. Minimum inner diameter d 2 of the notch surface 712c is set to be larger than the outer diameter D 2 of the cushion ring 15 (e.g., d 2 -D 2> 0.05mm). Thereby, the buffer ring 15 before the formation of the caulking portion 62b is allowed to deform in the radial direction when it is deformed in the axial direction in the notch 71C (shown in FIG. 3A) when the caulking portion 62b is formed. . The dimensional difference (d 2 −D 2 ) is d 2 −D 2 > 0.05 mm, but it is desirable that d 2 −D 2 ≧ 0.1 mm.

第２の内側軌道面７１ａは、第２の内輪部材７１の軸線方向略中央部に配置されている。第２の内側軌道面７１ａは、第２の内輪部材７１の外周部に円環状の凹溝７１ｄを形成することにより、その溝底に設けられている。第２の内側軌道面７１ａの外径は、車輪側から車体側に向かって漸次大きくなる寸法に設定されている。   The second inner raceway surface 71 a is disposed at a substantially central portion in the axial direction of the second inner ring member 71. The second inner raceway surface 71 a is provided at the groove bottom by forming an annular concave groove 71 d in the outer peripheral portion of the second inner ring member 71. The outer diameter of the second inner raceway surface 71a is set to a dimension that gradually increases from the wheel side toward the vehicle body side.

（外方部材３の構成）
外方部材３は、図１に示すように、複列の転動体４，５をそれぞれ転動させる外側軌道面３ａ，３ｂを有する。外方部材３は、車体側に懸架装置（図示せず）の構成部品としてのナックル（図示せず）を介して取り付けられている。外方部材３は、中心軸線Ｏの両方向に開口する例えば中炭素鋼からなる円筒状の成形体によって形成されている。外方部材３は、車輪用軸受装置１の外輪として機能する。 (Configuration of the outer member 3)
As shown in FIG. 1, the outer member 3 has outer raceway surfaces 3 a and 3 b for rolling the double-row rolling elements 4 and 5, respectively. The outer member 3 is attached to the vehicle body side via a knuckle (not shown) as a component of a suspension device (not shown). The outer member 3 is formed of a cylindrical molded body made of, for example, medium carbon steel that opens in both directions of the central axis O. The outer member 3 functions as an outer ring of the wheel bearing device 1.

外方部材３には、その内外周面に開口してＡＢＳ（Anti-Lock Brake System）センサ１０を取り付けるためのセンサ取付孔３ｃが設けられている。ＡＢＳセンサ１０は、パルサーリング９と共に車軸の回転速度を検出する。ＡＢＳセンサ１０の検出部は、パルサーリング９の外周面に対応する位置に配置されている。ＡＢＳセンサ１０としては、例えばホール素子や磁気抵抗素子など磁気検出素子が用いられる。   The outer member 3 is provided with a sensor mounting hole 3c for opening an ABS (Anti-Lock Brake System) sensor 10 so as to open on the inner and outer peripheral surfaces thereof. The ABS sensor 10 detects the rotational speed of the axle together with the pulsar ring 9. The detection part of the ABS sensor 10 is arranged at a position corresponding to the outer peripheral surface of the pulsar ring 9. As the ABS sensor 10, for example, a magnetic detection element such as a Hall element or a magnetoresistive element is used.

（複列の転動体４，５の構成）
車輪側列の転動体４は、円すいころからなる。車輪側列の転動体４は、第１の内輪部材７０における第１の内側軌道面７０ａと外方部材３の外側軌道面３ａとの間に介在して配置されている。車輪側列の転動体４は、ころ保持器１１によって転動可能に保持されている。転動体４の車輪側には、第１の内輪部材７０の外周面と外方部材３の内周面との間に介在する車輪側のシール部材１２が配置されている。 (Configuration of double row rolling elements 4 and 5)
The rolling elements 4 in the wheel side rows are tapered rollers. The rolling elements 4 in the wheel side row are disposed between the first inner raceway surface 70 a of the first inner ring member 70 and the outer raceway surface 3 a of the outer member 3. The rolling elements 4 in the wheel side row are held by a roller cage 11 so as to be able to roll. On the wheel side of the rolling element 4, a wheel-side seal member 12 interposed between the outer peripheral surface of the first inner ring member 70 and the inner peripheral surface of the outer member 3 is disposed.

車体側列の転動体５は、円すいころからなる。車体側列の転動体５は、第２の内輪部材７１の第２の内側軌道面７１ａと外方部材３の外側軌道面３ｂとの間に介在して配置されている。車体側列の転動体５は、ころ保持器１３（図示せず）によって転動可能に保持されている。転動体５の車体側には、第２の内輪部材７１の外周面と外方部材３の内周面との間に介在する車体側のシール部材１４が配置されている。   The rolling elements 5 in the vehicle body side row are formed of tapered rollers. The rolling elements 5 in the vehicle body side row are disposed between the second inner raceway surface 71 a of the second inner ring member 71 and the outer raceway surface 3 b of the outer member 3. The rolling elements 5 in the vehicle body side row are held by a roller cage 13 (not shown) so that they can roll. On the vehicle body side of the rolling element 5, a vehicle body side seal member 14 interposed between the outer peripheral surface of the second inner ring member 71 and the inner peripheral surface of the outer member 3 is disposed.

（車輪用軸受装置１の動作）
本実施の形態に示す車輪用軸受装置１の動作は、次に示すようにして行われる。すなわち、車両のエンジン側からトルクが等速自在継手等を介してハブ輪６に伝達されると、ハブ輪６が内輪７と共に回転する。ハブ輪６には車輪が取り付けられているため、エンジン側からのトルクが車輪にも伝達され、車輪がハブ輪６と共に回転する。 (Operation of the wheel bearing device 1)
Operation | movement of the wheel bearing apparatus 1 shown to this Embodiment is performed as follows. That is, when torque is transmitted from the engine side of the vehicle to the hub wheel 6 through a constant velocity universal joint or the like, the hub wheel 6 rotates together with the inner ring 7. Since the wheel is attached to the hub wheel 6, torque from the engine side is also transmitted to the wheel, and the wheel rotates together with the hub wheel 6.

（車輪用軸受装置１における内輪７の取付方法）
次に、本実施の形態に示す車輪用軸受装置１における内輪７の取付方法につき、図３（ａ）〜（ｄ）を参照して説明する。図３（ａ）〜（ｄ）は車輪用軸受装置における内輪の取付方法を示す。 (Mounting method of the inner ring 7 in the wheel bearing device 1)
Next, a method for attaching the inner ring 7 in the wheel bearing device 1 shown in the present embodiment will be described with reference to FIGS. FIGS. 3A to 3D show a method of attaching the inner ring in the wheel bearing device.

本実施の形態に示す内輪の取付方法は、「軸受組立体とハブ輪用素材との芯合わせ」，「軸受組立体の組み付け」，「変形前の緩衝リングの組み付け」及び「かしめ部の形成」の各工程が順次実施されるため、これら各工程を順次説明する。   The inner ring mounting method shown in this embodiment includes “alignment of bearing assembly and hub ring material”, “assembly of bearing assembly”, “assembly of buffer ring before deformation” and “formation of caulking portion”. Since each process of "is performed sequentially, each of these processes is demonstrated sequentially.

「軸受組立体とハブ輪用素材との芯合わせ」
図３（ａ）に示すように、予め組み立てられた軸受組立体Ａをハブ輪用素材６Ａの中心軸線Ｏ上に配置する。この場合、軸受組立体Ａがハブ輪６の中心軸線Ｏ上に配置されると、軸受組立体Ａとハブ輪用素材６Ａとの芯合わせが行われる。 "Centering of bearing assembly and hub ring material"
As shown in FIG. 3A, a pre-assembled bearing assembly A is disposed on the central axis O of the hub wheel material 6A. In this case, when the bearing assembly A is disposed on the central axis O of the hub wheel 6, the bearing assembly A and the hub wheel material 6A are aligned.

「軸受組立体の組み付け」
図３（ｂ）に示すように、軸受組立体Ａを中心軸線Ｏに沿ってハブ輪用素材６Ａ側に移動させてハブ輪用素材６Ａを軸受組立体Ａの内輪用素材７１Ａに挿通させる。この場合、軸受組立体Ａの内輪用素材７１Ａにハブ輪用素材６Ａが挿通されると、ハブ輪用素材６Ａに軸受組立体Ａが組み付けられる。なお、ハブ輪用素材６Ａに対する軸受組立体Ａの組み付けは、ハブ輪用素材６Ａを軸受組立体Ａ側に移動させて軸受組立体Ａの内輪用素材７１Ａに挿通させても行うことができる。 “Assembling the bearing assembly”
As shown in FIG. 3B, the bearing assembly A is moved along the central axis O toward the hub wheel material 6A, and the hub wheel material 6A is inserted into the inner ring material 71A of the bearing assembly A. In this case, when the hub wheel material 6A is inserted into the inner ring material 71A of the bearing assembly A, the bearing assembly A is assembled to the hub wheel material 6A. The assembly of the bearing assembly A with respect to the hub wheel material 6A can also be performed by moving the hub wheel material 6A to the bearing assembly A side and inserting it into the inner ring material 71A of the bearing assembly A.

「変形前の緩衝リングの組み付け」
図３（ｃ）に示すように、ハブ輪用素材６Ａの車体側端部をかしめ部６２ｂ（図２に示す）の形成前における緩衝リング１５に挿通させてその一部を内輪用素材７１Ａの切り欠き７１Ｃ内に配置する。この場合、かしめ部６２ｂの形成前における緩衝リング１５は、その一部が切り欠き７１Ｃ内に配置されると、軸線方向他方側端面（平面の端面）を切り欠き７１Ｃの軸線方向端面７１０Ｃに対向させてハブ輪用素材６Ａの車体側端部に組み付けられる。 “Assembling the shock-absorbing ring before deformation”
As shown in FIG. 3C, the end of the hub wheel material 6A on the vehicle body side is inserted into the buffer ring 15 before the formation of the caulking portion 62b (shown in FIG. 2), and a part of the end portion of the inner ring material 71A is inserted. It arrange | positions in the notch 71C. In this case, when a part of the buffer ring 15 before the caulking portion 62b is formed is disposed in the notch 71C, the other end surface in the axial direction (the end surface of the plane) is opposed to the axial end surface 710C of the notch 71C. Thus, the hub wheel material 6A is assembled to the vehicle body side end portion.

「かしめ部の形成」
図３（ｄ）に示すように、ハブ輪用素材６Ａの車体側端部を内輪用素材７１Ａの車体側素材端面７１０Ａ（ハブ輪用素材６Ａ及び内輪用素材７１Ａと共に図３（ｃ）に示す）にかしめてハブ輪６に内輪７を取り付ける。この場合、ハブ輪用素材６Ａからの軸線方向のかしめ力は、内輪用素材７１Ａの車体側素材端面７１０Ａに、またかしめ部６２ｂの形成前における緩衝リング１５を介して内輪用素材７１Ａにおける切り欠き７１Ｃの軸線方向端面７１０Ｃにそれぞれ付与される。ハブ輪用素材６Ａからの径方向のかしめ力は、かしめ部６２ｂの形成前における緩衝リング１５に付与される。これにより、かしめ部６２ｂの形成前における緩衝リング１５がかしめ力を受け、ハブ輪用素材６Ａから内輪用素材７１Ａに作用する径方向のかしめ力が緩和される。ハブ輪用素材６Ａの車体側端部を内輪用素材７１Ａの車体側素材端面７１０Ａへかしめて密着させると、車輪用軸受装置１の使用時に切り欠き７１ｃ内に対する雨水等の浸入を阻止することができ、緩衝リング１５の腐食発生を抑制することができる。 "Formation of crimped part"
As shown in FIG. 3D, the vehicle body side end of the hub wheel material 6A is shown in FIG. 3C together with the vehicle body side material end surface 710A of the inner wheel material 71A (the hub wheel material 6A and the inner wheel material 71A. ) And attach the inner ring 7 to the hub ring 6. In this case, the caulking force in the axial direction from the hub wheel material 6A is notched in the inner ring material 71A on the vehicle body side material end surface 710A of the inner ring material 71A and the buffer ring 15 before the caulking portion 62b is formed. It is given to the axial direction end face 710C of 71C. The caulking force in the radial direction from the hub wheel material 6A is applied to the buffer ring 15 before the caulking portion 62b is formed. Thereby, the buffer ring 15 before the caulking portion 62b is formed receives the caulking force, and the caulking force in the radial direction acting on the inner ring material 71A from the hub wheel material 6A is reduced. By caulking the vehicle body side end of the hub wheel material 6A to the vehicle body side material end surface 710A of the inner ring material 71A, it is possible to prevent intrusion of rainwater or the like into the notch 71c when the wheel bearing device 1 is used. The occurrence of corrosion of the buffer ring 15 can be suppressed.

このようにして、ハブ輪用素材６Ａの車体側端部がかしめられると、かしめ部６２ｂを有するハブ輪６が形成され、ハブ輪６に対して内輪７が取り付けられる。   In this way, when the end portion of the hub wheel material 6 </ b> A is caulked, the hub wheel 6 having the caulking portion 62 b is formed, and the inner ring 7 is attached to the hub wheel 6.

[実施の形態の効果]
以上説明した実施の形態によれば、次に示す効果が得られる。 [Effect of the embodiment]
According to the embodiment described above, the following effects can be obtained.

ハブ輪用素材６Ａのかしめ時にかしめ部６２ｂの形成前における緩衝リング１５が切り欠き７１Ｃ内で径方向にかしめ力を受け、内輪用素材７１Ａに対する径方向のかしめ力が緩和される。これにより、内輪用素材７１Ａの径方向への膨張を抑制することができる。   When the hub ring material 6A is caulked, the buffer ring 15 before the caulking portion 62b is formed receives a caulking force in the radial direction in the notch 71C, and the caulking force in the radial direction on the inner ring material 71A is reduced. Thereby, the expansion in the radial direction of the inner ring material 71A can be suppressed.

以上、本発明の車輪用軸受装置における内輪の取付構造及びその取付方法並びに車輪用軸受装置を上記の実施形態に基づいて説明したが、本発明は上記実施の形態に限定されるものではなく、その要旨を逸脱しない範囲で種々の態様において実施することが可能であり、例えば次に示すような変形も可能である。   As described above, the inner ring mounting structure and the mounting method thereof and the wheel bearing device in the wheel bearing device of the present invention have been described based on the above embodiment, but the present invention is not limited to the above embodiment. The present invention can be implemented in various modes without departing from the gist thereof, and for example, the following modifications are possible.

（１）上記実施の形態では、緩衝リング１５の内周面１５ａが内径を、また外周面１５ｂが外径をそれぞれ略均一な寸法とする円周面で形成されている場合について説明したが、本発明はこれに限定されず、図４（上記実施の形態の変形例）に示すような緩衝リング１５０を用いてもよい。この場合、緩衝リング１５０において、内周面１５０ａが内径を車輪側から車体側に向かって漸次大きくする寸法とするテーパ面で、また外周面１５０ｂが外径を略均一な寸法とする円周面で形成されている。内周面１５０ａは、かしめ部６２ｂの形成に伴いハブ輪用素材６Ａからかしめ力を受けて一部を軸線方向の圧縮力とする。 (1) In the above embodiment, the case has been described in which the inner peripheral surface 15a of the buffer ring 15 has an inner diameter and the outer peripheral surface 15b is formed by a circumferential surface having substantially uniform dimensions. The present invention is not limited to this, and a buffer ring 150 as shown in FIG. 4 (modified example of the above embodiment) may be used. In this case, in the shock absorbing ring 150, the inner peripheral surface 150a is a tapered surface whose inner diameter is gradually increased from the wheel side toward the vehicle body side, and the outer peripheral surface 150b is a circumferential surface whose outer diameter is substantially uniform. It is formed with. The inner peripheral surface 150a receives a caulking force from the hub wheel material 6A along with the formation of the caulking portion 62b, and a part of the inner peripheral surface 150a is used as an axial compressive force.

ハブ輪６において、小径の胴部６ｂの外周面６３ｂは、緩衝リング１５０の内周面１５０ａに適合するテーパ面で形成されている。外周面６３ｂは、ハブ輪用素材６Ａにおいて外径を略均一な寸法とする円周面で形成された外周面６１Ａである。このため、ハブ輪用素材６Ａの円周面６１Ａは、かしめ部６２ｂの形成に伴いテーパ角を大きくする方向に変位し、かしめ部６２ｂの形成前における緩衝リング１５０の内周面１５０ａに当接した後、ハブ輪６の外周面６３ｂとなるまでテーパ面として押し付ける。これにより、かしめ部６２ｂの形成時にかしめ部６２ｂの形成前における緩衝リング１５０に対してその径方向に作用するかしめ力が分散して一部を軸線方向の圧縮力とし、かしめ部６２ｂの形成前における緩衝リング１５０の径方向への変形が抑制される。   In the hub wheel 6, the outer peripheral surface 63 b of the small-diameter body portion 6 b is formed with a tapered surface that fits the inner peripheral surface 150 a of the buffer ring 150. The outer circumferential surface 63b is an outer circumferential surface 61A formed of a circumferential surface having a substantially uniform outer diameter in the hub wheel material 6A. For this reason, the circumferential surface 61A of the hub wheel material 6A is displaced in the direction of increasing the taper angle as the caulking portion 62b is formed, and abuts against the inner peripheral surface 150a of the buffer ring 150 before the caulking portion 62b is formed. After that, it is pressed as a tapered surface until the outer peripheral surface 63b of the hub wheel 6 is reached. As a result, the caulking force acting in the radial direction on the buffer ring 150 before the caulking portion 62b is formed during the formation of the caulking portion 62b is dispersed to make a part of the axial compressive force, and before the caulking portion 62b is formed. The deformation of the buffer ring 150 in the radial direction is suppressed.

（２）上記実施の形態では、ハブ輪用素材６Ａを車体側素材端面７１０Ａへ密着させて切り欠き７１ｃ内に対する雨水等の浸入を阻止する場合について説明したが、本発明はこれに限定されず、図４に示すようなシール構造を付加して切り欠き７１ｃ内への雨水等の浸入を一層効果的に阻止することができる。図４において、第２の内輪部材７１には、車体側内輪端面７１ｂに開口する円環状の凹溝７１ｅが設けられている。凹溝７１ｅには、かしめ部６２ｂの軸線方向端面６２０ｂと第２の内輪部材７１の車体側内輪端面７１ｂとの間に介在する円環状のシール部材７２が取り付けられている。シール部材７２としては、例えばＯリングが用いられる。 (2) In the above embodiment, the case where the hub wheel material 6A is brought into close contact with the vehicle body side material end surface 710A to prevent intrusion of rainwater or the like into the cutout 71c has been described, but the present invention is not limited to this. By adding a seal structure as shown in FIG. 4, it is possible to more effectively prevent rainwater or the like from entering the notch 71c. In FIG. 4, the second inner ring member 71 is provided with an annular groove 71e that opens to the vehicle body side inner ring end face 71b. An annular seal member 72 interposed between the axial end surface 620b of the caulking portion 62b and the vehicle body side inner ring end surface 71b of the second inner ring member 71 is attached to the concave groove 71e. For example, an O-ring is used as the seal member 72.

（３）上記実施の形態では、転動体４，５が共に円すいころである場合について説明したが、本発明はこれに限定されず、転動体が円筒ローラでもよく、またボール（玉）からなる転動体であってもよい。 (3) In the above embodiment, the case where the rolling elements 4 and 5 are both tapered rollers has been described. However, the present invention is not limited to this, and the rolling element may be a cylindrical roller, and is composed of a ball (ball). It may be a rolling element.

（４）上記実施の形態では、駆動輪用軸受装置に適用する場合について説明したが、本発明はこれに限定されず、従動輪用軸受装置にも上記実施の形態と同様に適用可能である。 (4) Although the case where the present invention is applied to a drive wheel bearing device has been described in the above embodiment, the present invention is not limited to this, and can be applied to a driven wheel bearing device as in the above embodiment. .

１…車輪用軸受装置、２…内方部材、３…外方部材、３ａ，３ｂ…外側軌道面、３ｃ…センサ取付孔、４，５…転動体、６…ハブ輪、６ａ…大径の胴部、６０ａ…車輪取付用フランジ、６００ａ…ボルト挿通孔、６ｂ…小径の胴部、６０ｂ，６１ｂ…凹部、６１０ｂ…底面、６２ｂ…かしめ部、６２０ｂ…軸線方向端面、６３ｂ…外周面、６ｃ…貫通孔、６Ａ…ハブ輪用素材、６０Ａ…凹部、６１Ａ…円周面、７…内輪、７０…第１の内輪部材、７０ａ…第１の内側軌道面、７０ｂ…仕切部、７０ｃ…リング取付面、７０ｄ…凹溝、７１…第２の内輪部材、７１ａ…第２の内側軌道面、７１ｂ…車体側内輪端面、７１ｃ，７１Ｃ…切り欠き、７１０ｃ，７１０Ｃ…軸線方向端面、７１１ｃ…開口部、７１２ｃ…切り欠き面（内周面）、７１ｄ…凹溝、７１ｅ…凹溝、７１Ａ…内輪用素材、７１０Ａ…車体側素材端面、７２…シール部材、８…ハブボルト、９…パルサーリング、１０…ＡＢＳセンサ、１１…ころ保持器、１２…シール部材、１３…ころ保持器、１４…シール部材、１５，１５０…緩衝リング、１５ａ，１５０ａ…内周面、１５ｂ，１５０ｂ…外周面、Ａ…軸受組立体、Ｇ…空隙、Ｏ…中心軸線、Ｌ１…寸法、Ｌ２…軸線方向寸法、Ｄ１，Ｄ２…外径、ｄ１…最大内径、ｄ２…最小内径 DESCRIPTION OF SYMBOLS 1 ... Wheel bearing apparatus, 2 ... Inner member, 3 ... Outer member, 3a, 3b ... Outer raceway surface, 3c ... Sensor mounting hole, 4, 5 ... Rolling element, 6 ... Hub wheel, 6a ... Large diameter Body, 60a ... Wheel mounting flange, 600a ... Bolt insertion hole, 6b ... Small diameter body, 60b, 61b ... Recess, 610b ... Bottom, 62b ... Caulking part, 620b ... Axial end face, 63b ... Outer surface, 6c ... through hole, 6A ... hub wheel material, 60A ... recess, 61A ... circumferential surface, 7 ... inner ring, 70 ... first inner ring member, 70a ... first inner raceway surface, 70b ... partitioning part, 70c ... ring Mounting surface, 70d ... concave groove, 71 ... second inner ring member, 71a ... second inner raceway surface, 71b ... vehicle body side inner ring end face, 71c, 71C ... notch, 710c, 710C ... axial end face, 711c ... opening Part, 712c ... notch surface (inner peripheral surface), 71d Concave groove, 71e ... Concave groove, 71A ... Material for inner ring, 710A ... End face of vehicle body side material, 72 ... Seal member, 8 ... Hub bolt, 9 ... Pulsar ring, 10 ... ABS sensor, 11 ... Roller cage, 12 ... Seal member , 13 ... Roller cage, 14 ... Seal member, 15, 150 ... Buffer ring, 15a, 150a ... Inner peripheral surface, 15b, 150b ... Outer peripheral surface, A ... Bearing assembly, G ... Gap, O ... Center axis, L 1 ... dimension, L 2 ... axial dimension, D 1, D 2 ... outer diameter, d 1 ... maximum inner diameter, d 2 ... minimum inner diameter

Claims (8)

転動体を転動させる内輪を有する転がり軸受を介して車体側にハブ輪を回転可能に支持する車輪用軸受装置において、前記内輪となる内輪用素材に前記ハブ輪となるハブ輪用素材を挿通させ、前記ハブ輪用素材の車体側端部及び車輪側端部のうち車体側端部を前記内輪用素材の車体側素材端面へかしめてかしめ部を形成することにより、前記ハブ輪に前記内輪を取り付ける構造であって、
前記内輪は、その内周面及び車体側内輪端面に開口する円環状の切り欠きを有し、前記切り欠きの軸線方向端面と前記かしめ部の軸線方向端面との間に前記ハブ輪からかしめ力を受ける緩衝リングが介在して配置されている
車輪用軸受装置における内輪の取付構造。 In a wheel bearing device in which a hub ring is rotatably supported on a vehicle body via a rolling bearing having an inner ring for rolling rolling elements, the hub wheel material serving as the hub ring is inserted into the inner ring material serving as the inner ring. And the caulking portion is formed by caulking the vehicle body side end portion of the hub wheel material to the vehicle body side material end surface of the inner ring material, thereby forming the inner ring on the hub wheel. It is a structure to attach,
The inner ring has an annular notch that opens to an inner peripheral surface of the inner ring and an end face of the vehicle body-side inner ring, and caulking force from the hub wheel between an axial end surface of the notch and an axial end surface of the caulking portion. A structure for mounting an inner ring in a wheel bearing device in which a shock-absorbing ring is interposed. 前記ハブ輪において、前記かしめ部の外径が前記切り欠きの内径よりも大きい寸法に設定されている請求項１に記載の車輪用軸受装置における内輪の取付構造。   The inner ring mounting structure in the wheel bearing device according to claim 1, wherein an outer diameter of the caulking portion is set to be larger than an inner diameter of the notch in the hub wheel. 前記内輪において、前記切り欠きがその内周面と前記緩衝リングの外周面との間に円環状の空隙を含む請求項１又は２に記載の車輪用軸受装置における内輪の取付構造。   The inner ring mounting structure in the wheel bearing device according to claim 1, wherein the notch includes an annular gap between an inner peripheral surface of the inner ring and an outer peripheral surface of the buffer ring. 前記緩衝リングにおいて、その軸線方向寸法が前記かしめ部の軸線方向端面と前記切り欠きの軸線方向端面との間の寸法よりも大きい寸法に設定されている請求項１乃至３のいずれか１項に記載の車輪用軸受装置における内輪の取付構造。   In the said buffer ring, the dimension of the axial direction is set to the dimension larger than the dimension between the axial direction end surface of the said crimping | crimped part, and the axial direction end surface of the said notch. An inner ring mounting structure in the described wheel bearing device. 前記内輪において、前記車体側内輪端面と前記かしめ部の軸線方向端面との間に円環状のシール部材が介在して配置されている請求項１乃至４のいずれか１項に記載の車輪用軸受装置における内輪の取付構造。   The wheel bearing according to any one of claims 1 to 4, wherein in the inner ring, an annular seal member is interposed between the end face on the vehicle body side inner ring and the end face in the axial direction of the caulking portion. Mounting structure of the inner ring in the device. 請求項１乃至５のいずれか１項に記載の内輪の取付構造を用いて構成された車輪用軸受装置。   The wheel bearing apparatus comprised using the mounting structure of the inner ring | wheel of any one of Claims 1 thru | or 5. 転動体を転動させる内輪を有する転がり軸受を介して車体側にハブ輪を回転可能に支持する車輪用軸受装置において、前記内輪となる内輪用素材に前記ハブ輪となるハブ輪用素材を挿通させ、前記ハブ輪用素材の車体側端部及び車輪側端部のうち車体側端部を前記内輪用素材の車体側素材端面へかしめてかしめ部を形成することにより、前記ハブ輪に前記内輪を取り付ける方法であって、
前記ハブ輪用素材の前記車体側端部をかしめる以前に、前記かしめ部の形成に伴いかしめ力を受ける緩衝リングに前記ハブ輪用素材を挿通させ、前記内輪用素材にその内周面及び前記車体側素材端面に開口させて予め形成された円環状の切り欠き内に前記緩衝リングの一部を配置する
車輪用軸受装置における内輪の取付方法。 In a wheel bearing device in which a hub ring is rotatably supported on a vehicle body via a rolling bearing having an inner ring for rolling rolling elements, the hub wheel material serving as the hub ring is inserted into the inner ring material serving as the inner ring. And the caulking portion is formed by caulking the vehicle body side end portion of the hub wheel material to the vehicle body side material end surface of the inner ring material, thereby forming the inner ring on the hub wheel. A method of attaching
Prior to caulking the vehicle wheel side end of the hub wheel material, the hub wheel material is inserted into a buffer ring that receives caulking force with the formation of the caulking portion, and the inner ring material has its inner peripheral surface and A method for mounting an inner ring in a wheel bearing device, wherein a part of the buffer ring is disposed in an annular notch that is opened in the end face of the vehicle body side material and is formed in advance. 前記緩衝リングにおいて、その内周面が前記かしめ力の一部を軸線方向の圧縮力とするテーパ面で形成される請求項７に記載の車輪用軸受装置における内輪の取付方法。   The method for attaching an inner ring in a wheel bearing device according to claim 7, wherein an inner peripheral surface of the buffer ring is formed by a tapered surface in which a part of the caulking force is a compressive force in an axial direction.
JP2012092343A 2012-04-13 2012-04-13 Mounting structure of inner ring in wheel bearing device, mounting method thereof and wheel bearing device Pending JP2013221548A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2012092343A JP2013221548A (en) 2012-04-13 2012-04-13 Mounting structure of inner ring in wheel bearing device, mounting method thereof and wheel bearing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2012092343A JP2013221548A (en) 2012-04-13 2012-04-13 Mounting structure of inner ring in wheel bearing device, mounting method thereof and wheel bearing device

Publications (1)

Publication Number Publication Date
JP2013221548A true JP2013221548A (en) 2013-10-28

Family

ID=49592669

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2012092343A Pending JP2013221548A (en) 2012-04-13 2012-04-13 Mounting structure of inner ring in wheel bearing device, mounting method thereof and wheel bearing device

Country Status (1)

Country Link
JP (1) JP2013221548A (en)

Similar Documents

Publication Publication Date Title
CN107269686B (en) Hub bearing unit configured for mounting on a knuckle of a suspension
EP1598217A2 (en) Bearing apparatus for a wheel of vehicle
EP3205513A1 (en) Wheel bearing device
WO2007075386A2 (en) Wheel end with stamped bearing races
US7607838B2 (en) Bearing apparatus for a wheel of vehicle
WO2007102273A1 (en) Bearing device for wheel
US8657502B2 (en) Inner ring of wheel bearing device, manufacturing method therefor, and wheel bearing device
JP2006036020A (en) Bearing device for drive wheel
US8142081B2 (en) Wheel support bearing assembly
JP5000579B2 (en) Manufacturing method of rolling bearing unit
JP2011089619A (en) Bearing device for wheel
JP5415999B2 (en) Wheel bearing device
JP6551168B2 (en) Rolling bearing unit for wheel support
JP2013221548A (en) Mounting structure of inner ring in wheel bearing device, mounting method thereof and wheel bearing device
JP5047633B2 (en) Wheel bearing device
JP2012035798A (en) Method for manufacturing bearing device for wheel
JP5928138B2 (en) Inner ring mounting structure and mounting method in wheel bearing device, and wheel bearing device
JP5024850B2 (en) Wheel bearing device
JP4573200B2 (en) Wheel bearing device
JP5116131B2 (en) Drive wheel bearing device
JP2004203209A (en) Wheel bearing
CN103348149A (en) Bearing device for hub shaft for wheel
JP5236097B2 (en) Wheel bearing device
JP4278693B2 (en) Rolling bearing unit
JP4244114B2 (en) Rolling bearing unit