JP5928138B2 - Inner ring mounting structure and mounting method in wheel bearing device, and wheel bearing device - Google Patents

Inner ring mounting structure and mounting method in wheel bearing device, and wheel bearing device Download PDF

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JP5928138B2
JP5928138B2 JP2012107060A JP2012107060A JP5928138B2 JP 5928138 B2 JP5928138 B2 JP 5928138B2 JP 2012107060 A JP2012107060 A JP 2012107060A JP 2012107060 A JP2012107060 A JP 2012107060A JP 5928138 B2 JP5928138 B2 JP 5928138B2
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inner ring
annular
wheel
main body
vehicle body
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JP2013234710A (en
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豊 高麗
豊 高麗
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JTEKT Corp
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JTEKT 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
    • 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
    • F16C33/60—Raceways; Race rings divided or split, e.g. comprising two juxtaposed rings
    • F16C33/605—Raceways; Race rings divided or split, e.g. comprising two juxtaposed rings with a separate retaining member, e.g. flange, shoulder, guide ring, secured to a race ring, adjacent to the race surface, so as to abut the end of the rolling elements, e.g. rollers, or the cage
    • 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
    • F16C2326/00—Articles relating to transporting
    • F16C2326/01—Parts of vehicles in general
    • F16C2326/02—Wheel hubs or castors

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 also relates to 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、ハブ輪に対する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、ハブ輪用素材のかしめ後にハブ輪に取り付けられた内輪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 is attached to the hub wheel (when the hub wheel material is caulked), the caulking force from the hub wheel material side to the inner ring material is not limited to the axial direction. It also acted in the radial direction, and the inner ring material was deformed (expanded) in the radial direction. When the amount of expansion in the radial direction of the inner ring material is large, hoop stress generated in the inner ring attached to the hub ring after caulking of the hub ring material is increased, and the corrosive environment of the wheel bearing device is increased. Depending on use, the inner ring may reduce its ductility or toughness, 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が抑制された内輪をハブ輪に取り付けることができる技術を提供することにある。   The objective of this invention is providing the technique which can attach the inner ring | wheel with which the expansion | swelling to the radial direction of the raw material for inner rings was suppressed to a hub ring.

（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、前記内輪は、軌道部を有する本体部と、前記本体部に嵌合する円環状の大鍔部と、を有し、前記本体部は、その車体側端面から軸方向車体側に突出する円環状の突出部を有し、前記大鍔部は、前記本体部の外周面に嵌合する第１の円環部と、前記第１の円環部の内径よりも小さい内径をもって前記本体部の車体側端面に当接する第２の円環部と、を有し、前記第２の円環部の内周面と前記突出部の外周面との間に、円環状の空隙が形成されており、前記ハブ輪のかしめ部が前記本体部の前記突出部と前記大鍔部の車体側端面とに密着した状態で、前記空隙内において前記突出部が径方向外側に変形している、車輪用軸受装置を提供する。 (1) The present invention, in order to achieve the above object, in a wheel bearing apparatus for rotatably supporting the hub wheel via a rolling bearing having an inner ring for rolling the rolling elements, the inner wheel, track A main body part having an annular part and an annular large collar part fitted to the main body part, and the main body part has an annular projecting part projecting from the end surface on the vehicle body side in the axial direction. The large collar portion is in contact with the vehicle body side end surface of the main body portion with a first annular portion fitted to the outer peripheral surface of the main body portion and an inner diameter smaller than the inner diameter of the first annular portion. An annular space is formed between an inner peripheral surface of the second annular portion and an outer peripheral surface of the protruding portion, and the hub ring is caulked. In the state where the portion is in close contact with the projecting portion of the main body portion and the end surface of the large collar portion on the vehicle body side, the projecting portion is in the radial direction It is deformed to the side, to provide a wheel bearing equipment.

（２）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ハブ輪を回転可能に支持する車輪用軸受装置の製造方法であって、前記内輪は、軌道部を有する本体部と、前記本体部に嵌合する円環状の大鍔部と、を有し、前記本体部は、その車体側端面から軸方向車体側に突出する円環状の突出部を有し、前記大鍔部は、前記本体部の外周面に嵌合する第１の円環部と、前記第１の円環部の内径よりも小さい内径をもって前記本体部の車体側端面に当接する第２の円環部と、を有し、前記本体部と前記大鍔部とを嵌合させることにより、前記第２の円環部の内周面と前記突出部の外周面との間に円環状の空隙が形成された前記内輪を形成する工程と、記ハブ輪を前記内輪に挿通させる工程と、前記ハブ輪の車体側端部を前記内輪に対してかしめることによって、前記空隙内において前記突出部が径方向外側に変形させる工程と、を有する車輪用軸受装置の製造方法を提供する。
 (2) The present invention, in order to achieve the above object, a wheel bearing equipment manufacturing method of rotatably supporting the hub wheel via a rolling bearing having an inner ring for rolling the rolling elements, yen said wheel includes a main body portion having a track portion, and a large flange portion of the annular shape fitted to the main body portion, said body portion, which projects from the vehicle body side end face in the axial direction the vehicle body side The main body portion has an annular protrusion, and the large collar portion has a first annular portion fitted to the outer peripheral surface of the main body portion, and an inner diameter smaller than an inner diameter of the first annular portion. A second annular portion that abuts the end surface of the vehicle body, and by fitting the main body portion and the large collar portion, the inner circumferential surface of the second annular portion and the protruding portion Forming the inner ring in which an annular gap is formed between the outer peripheral surface, inserting the hub wheel through the inner ring, and the hub By caulking the vehicle body side end portion with respect to the inner ring of, to provide a method of manufacturing a wheel bearing device and a step of deforming the protrusions radially outward within the space.

本発明によると、ハブ輪用素材のかしめ時に凸部が径方向にかしめ力を受けて径方向に変形し、一方大鍔部にはかしめ力が径方向に及ぶことが回避される。これにより、内輪用素材に作用する径方向のかしめ力が緩和され、内輪用素材の径方向への膨張が抑制された内輪をハブ輪に取り付けることができる。   According to the present invention, when the hub wheel material is caulked, the convex portion receives the caulking force in the radial direction and deforms in the radial direction, while the caulking force is prevented from reaching the radial direction in the large collar portion. Thereby, the caulking force in the radial direction acting on the inner ring material can be alleviated, and the inner ring in which expansion of the inner ring material in the radial direction is suppressed can be attached to the hub wheel.

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要部を拡大して示す断面図。Sectional drawing which expands and shows the principal 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）は軸受組立体の組立工程を、（ｂ）は内輪とハブ輪との芯合わせ工程を、（ｃ）は内輪の組付工程を、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 the assembly process of the bearing assembly, (b) is the centering process of the inner ring and the hub ring, (c) is the assembly process of the inner ring, and (d) is the process of forming the caulking part. Show.

[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、内方部材２，外方部材３及び複列の転動体４，５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、転がり軸受（円すいころ軸受）を介して車体側（車両インナ側：図１の左側）にハブ輪６（後述）を回転可能に支持する。円すいころ軸受は、内輪７（後述），外方部材３及び転動体４，５を有する。円すいころ軸受は、車輪用軸受装置１の組立時におけるかしめ変形前には軸受中間体（未完成品）として用いられ、後述するかしめ部６２ｂの形成によって完成する。円すいころ軸受の軸受中間体は、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, an outer member 3, and double-row rolling elements 4 and 5. The wheel bearing device 1 is disposed between a vehicle body (not shown) and a wheel (not shown). The wheel bearing device 1 rotatably supports a hub wheel 6 (described later) on a vehicle body side (vehicle inner side: left side in FIG. 1) via a rolling bearing (tapered roller bearing). The tapered roller bearing has an inner ring 7 (described later), an outer member 3 and rolling elements 4 and 5. The tapered roller bearing is used as a bearing intermediate body (unfinished product) before caulking deformation at the time of assembling the wheel bearing device 1, and is completed by forming a caulking portion 62b described later. The bearing intermediate body of the tapered roller bearing constitutes a bearing assembly A (shown in FIG. 3) together with a pulsar ring 9, an ABS sensor 10, roller cages 11 and 13 and seal members 12 and 14, which will be described later.

（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、等速自在継手にナット止めされている。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 nut-fastened to a constant velocity universal joint. 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（車両アウタ側：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 (vehicle outer side: 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、径方向外側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、ハブ輪６となるハブ輪用素材６Ａ（図２に二点鎖線で示す）の軸線方向両端部（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２に二点鎖線で示す）における大鍔部１６の車体側端面１６１ａ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。ハブ輪６の形成は、ハブ輪用素材６Ａに対するかしめ部６２ｂの形成によって行われる。内輪７の形成は、内輪用素材７１Ａに対するかしめ部６２ｂの形成によって行われる。   The small-diameter body 6b has an annular recess 60b that opens outward 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 trunk portion 6b is configured so that the end portion on the vehicle body side of the axial end portions (the end portion on the vehicle body side and the end portion on the wheel side) of the hub wheel material 6A (indicated by a two-dot chain line in FIG. A caulking portion 62b is formed by caulking (plastically deforming) the inner ring material 71A (indicated by a two-dot chain line in FIG. 2), which serves as the inner ring 7 (second inner ring member 71), on the vehicle body side end surface 161a. By doing so, the inner ring 7 is attached to the recess 60b. The hub wheel 6 is formed by forming a caulking portion 62b on the hub wheel material 6A. The inner ring 7 is formed by forming a caulking portion 62b with respect to the inner ring material 71A.

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）が交互に形成された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 in which concave portions and convex portions (both not shown) are alternately formed 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、内輪７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は、本体部７２及び大鍔部７３を有する。   The second inner ring member 71 is disposed along the central axis O on the vehicle body side of the inner ring 7. The second inner ring member 71 has a main body portion 72 and a large collar portion 73.

本体部７２は、軌道部７２ａ及び凸部７２ｂからなる。軌道部７２ａ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７２ｃを有する。   The main body 72 includes a track portion 72a and a convex portion 72b. The track portion 72 a has a second inner track surface 72 c that rolls the rolling elements 5 in the vehicle body side row of the double row rolling elements 4, 5.

第２の内側軌道面７２ｃは、第１の内側軌道面７０ａにリング取付面７０ｃ等を介して中心軸線Ｏ方向に並列して配置されている。第２の内側軌道面７２ｃは、第２の内輪部材７１の外周部に円環状の凹溝７２ｄ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７２ｃ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 72c is arranged in parallel with the first inner raceway surface 70a in the direction of the central axis O via the ring attachment surface 70c and the like. The second inner raceway surface 72 c is provided at the groove bottom by forming an annular concave groove 72 d in the outer peripheral portion of the second inner ring member 71. The outer diameter of the second inner raceway surface 72c is set to a dimension that gradually increases from the wheel side toward the vehicle body side.

第２の内輪部材７１の形成は、図２に示すように、内輪用素材７１Ａの本体部１５（二点鎖線で示す）にハブ輪用素材６Ａを挿通させてかしめ部６２ｂを形成することにより行われる。   As shown in FIG. 2, the second inner ring member 71 is formed by inserting the hub ring material 6A through the main body part 15 (indicated by a two-dot chain line) of the inner ring material 71A to form a caulking part 62b. Done.

内輪用素材７１Ａは本体部１５及び大鍔部１６を有する。本体部１５及び大鍔部１６は、互いに別の部材によって形成されている。   The inner ring material 71 </ b> A has a main body portion 15 and a large collar portion 16. The main body portion 15 and the large collar portion 16 are formed by different members.

本体部１５は、内輪用素材７１Ａの軸線方向一方側（図１では右側）に配置されている。本体部１５は、第２の内輪部材７１（本体部７２）の軌道部７２ａとなる小鍔部付き軌道部１５ａ、及び小鍔部付き軌道部１５ａの車体側端面１５０ａの内周縁から突出する凸部１５ｂ（図２に二点鎖線で示す）からなる。本体部１５は、ハブ輪用素材６Ａを挿通させる円環部材によって形成されている。   The main body 15 is arranged on one side (the right side in FIG. 1) in the axial direction of the inner ring material 71A. The main body portion 15 is a protrusion protruding from the inner peripheral edge of the track-side end surface 150a of the track portion 15a with the small collar portion and the track portion 15a with the small collar portion which becomes the track portion 72a of the second inner ring member 71 (main body portion 72). It consists of a part 15b (indicated by a two-dot chain line in FIG. 2). The main body 15 is formed of an annular member that allows the hub wheel material 6A to be inserted therethrough.

小鍔部付き軌道部１５ａには、車輪側で径方向に突出する小鍔部１５１ａが設けられている。小鍔部付き軌道部１５ａには、車体側で大鍔部１６（第１の円環部１６０）の内周面１６０ａに適合する外周面１５２ａが設けられている。   The track portion 15a with the small flange portion is provided with a small flange portion 151a that protrudes in the radial direction on the wheel side. The track portion 15a with the small collar portion is provided with an outer circumferential surface 152a that matches the inner circumferential surface 160a of the large collar portion 16 (first annular portion 160) on the vehicle body side.

凸部１５ｂは、小鍔部付き軌道部１５ａの車体側端面１５０ａに一体に設けられている。凸部１５ｂの内径は、小鍔部付き軌道部１５ａの内径と略同一の寸法に設定されている。凸部１５ｂの外径は、小鍔部付き軌道部１５ａの外径よりも小さい寸法に設定されている。凸部１５ｂは、かしめ部６２ｂの形成時に変形して第２の内輪部材７１（本体部７２）の凸部７２ｂとなる。   The convex portion 15b is integrally provided on the vehicle body side end surface 150a of the track portion 15a with the small collar portion. The inner diameter of the convex portion 15b is set to be approximately the same as the inner diameter of the track portion 15a with the small flange portion. The outer diameter of the convex part 15b is set to a dimension smaller than the outer diameter of the track part 15a with a small collar part. The convex portion 15b is deformed when the caulking portion 62b is formed and becomes the convex portion 72b of the second inner ring member 71 (main body portion 72).

大鍔部１６は、内輪用素材７１Ａの軸線方向他方側（図１では左側）に配置されている。大鍔部１６は、第１の円環部１６０及び第２の円環部１６１を有し、全体が凸部１５ｂの外周囲で小鍔部付き軌道部１５ａの車体側端部に嵌合する円環部材によって形成されている。大鍔部１６は、小鍔部付き軌道部１５ａの車体側端部に嵌合してかしめ部６２ｂの形成によって小鍔部付き軌道部１５ａの車体側端部に密着する。大鍔部１６は、小鍔部付き軌道部１５ａの車体側端部への密着後に第２の内輪部材７１の大鍔部７３となる。   The large collar portion 16 is disposed on the other axial side of the inner ring material 71A (left side in FIG. 1). The large collar part 16 has a first annular part 160 and a second annular part 161, and the whole is fitted to the vehicle body side end part of the track part 15a with a small collar part around the outer periphery of the convex part 15b. It is formed by an annular member. The large collar portion 16 is fitted to the vehicle body side end portion of the track portion 15a with the small flange portion and is in close contact with the vehicle body side end portion of the track portion 15a with the small flange portion by forming the caulking portion 62b. The large collar part 16 becomes the large collar part 73 of the second inner ring member 71 after the track part 15a with the small collar part is in close contact with the end part on the vehicle body side.

第１の円環部１６０は、第２の円環部１６１の車輪側に並列して配置されている。第１の円環部１６０は、小鍔部付き軌道部１５ａの外周面１５２ａに適合する内周面１６０ａを有する。   The first annular portion 160 is arranged in parallel on the wheel side of the second annular portion 161. The first annular portion 160 has an inner peripheral surface 160a that conforms to the outer peripheral surface 152a of the track portion 15a with the small collar portion.

第２の円環部１６１は、小鍔部付き軌道部１５ａの車体側端面１５０ａに当接する車輪側端面１６１ｂを有する。第２の円環部１６１の内周面１６１ｃと凸部１５ｂの外周面１５０ｂとの間には、大鍔部１６と小鍔部付き軌道部１５ａとの嵌合状態においてかしめ部６２ｂの形成に伴い発生する凸部１５ｂの変形を許容する円環状の空隙１７が形成されている。かしめ部６２ｂの形成後には、空隙１７において凸部１５ｂの変形によって得られる凸部７２ｂを有する第２の内輪部材７１が形成される。   The second annular portion 161 has a wheel-side end surface 161b that comes into contact with the vehicle body-side end surface 150a of the track portion 15a with the small collar portion. Between the inner peripheral surface 161c of the second annular portion 161 and the outer peripheral surface 150b of the convex portion 15b, the caulking portion 62b is formed in the fitted state of the large flange portion 16 and the track portion 15a with the small flange portion. An annular gap 17 that allows the deformation of the convex portion 15b that occurs with this is formed. After the formation of the caulking portion 62b, the second inner ring member 71 having the convex portion 72b obtained by the deformation of the convex portion 15b in the gap 17 is formed.

空隙１７は、かしめ部６２ｂの形成によって径方向寸法が狭くなり、この状態において閉塞されている。かしめ部６２ｂは、大鍔部１６（第２の円環部１６１）の車体側端面１６１ａにハブ輪用素材６Ａの車体側端部を密着させて形成される。これにより、変形後の空隙１７に対する雨水等の浸入を阻止することができ、内輪７（第２の内輪部材７１）の腐食発生を抑制することができる。空隙１７の径方向寸法Ｄ（２ｒ）がＤ≧０．０５ｍｍに設定されている。   The gap 17 has a reduced radial dimension due to the formation of the caulking portion 62b, and is closed in this state. The caulking portion 62b is formed by closely contacting the vehicle body side end portion of the hub wheel material 6A with the vehicle body side end surface 161a of the large collar portion 16 (second annular portion 161). As a result, it is possible to prevent rainwater and the like from entering the deformed gap 17 and to suppress the occurrence of corrosion of the inner ring 7 (second inner ring member 71). The radial dimension D (2r) of the gap 17 is set to D ≧ 0.05 mm.

（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、内方部材２の外周囲に配置されている。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ように構成されている。 (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 disposed on the outer periphery of the inner member 2. 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 is configured to function 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、車輪側列の転動体４と同様に円すいころからなる。車体側列の転動体５は、本体部７２（第２の内輪部材７１）の第２の内側軌道面７２ｃ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（大鍔部７３）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 in the same manner as the rolling elements 4 in the wheel side row. The rolling elements 5 in the vehicle body side row are disposed between the second inner raceway surface 72c of the main body 72 (second inner ring member 71) and the outer raceway surface 3b 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 is disposed between the outer peripheral surface of the second inner ring member 71 (large collar portion 73) and the inner peripheral surface of the outer member 3. .

（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、「軸受組立体の組み立て」，「軸受組立体とハブ輪との芯合わせ」，「軸受組立体の組み付け」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 the steps of “assembling the bearing assembly”, “centering the bearing assembly and the hub ring”, “assembling the bearing assembly”, and “forming the caulking portion”. Since these steps are sequentially performed, each of these steps will be described in turn.

「軸受組立体の組み立て」
図３（ａ）に示すように、予め形成された本体部１５と大鍔部１６とを嵌合させてなる内輪用素材７１Ａを含む円すいころ軸受の軸受中間体に対し、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等を配置して軸受組立体Ａを組み立てる。 “Assembling the bearing assembly”
As shown in FIG. 3 (a), the pulsar ring 9, ABS is provided for a bearing intermediate of a tapered roller bearing including an inner ring material 71A formed by fitting a main body portion 15 and a large collar portion 16 formed in advance. The bearing assembly A is assembled by arranging the sensor 10, the roller cages 11 and 13, the seal members 12 and 14, and the like.

「軸受組立体とハブ輪との芯合わせ」
図３（ｂ）に示すように、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がハブ輪用素材６Ａ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"
As shown in FIG. 3B, the bearing assembly A is disposed on the center 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 material 6A, the bearing assembly A and the hub wheel material 6A are aligned.

「軸受組立体の組み付け」
図３（ｃ）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及び第１の内輪部材７０に挿通させる。この場合、軸受組立体Ａの内輪用素材７１Ａ及び第１の内輪部材７０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及び第１の内輪部材７０に挿通させても行うことができる。 “Assembling the bearing assembly”
As shown in FIG. 3 (c), the bearing assembly A is moved along the central axis O toward the hub wheel material 6A, and the hub wheel material 6A is moved to the inner ring material 71A of the bearing assembly A and the first ring material 71A. The inner ring member 70 is inserted. In this case, when the hub ring material 6A is inserted into the inner ring material 71A and the first inner ring member 70 of the bearing assembly A, the bearing assembly A is assembled to the hub ring material 6A. The bearing assembly A is assembled to the hub ring material 6A by moving the hub ring material 6A to the bearing assembly A side and inserting it into the inner ring material 71A and the first inner ring member 70 of the bearing assembly A. Can be done.

「かしめ部の形成」
図３（ｄ）に示すように、拘束リング（図示せず）を用いて大鍔部１６（図３（ｃ）に示す）の径方向外側への変形を規制しつつ、専用の治具（図示せず）を用いてハブ輪用素材６Ａ（図３（ｃ）に示す）の車体側端部を大鍔部１６の車体側端面１６１ａ（図３（ｃ）に示す）にかしめることによりかしめ部６２ｂを形成する。この場合、かしめ部６２ｂが形成されると、大鍔部７３の内周面を軌道部７２ａの外周面に密着させるとともに、大鍔部７３の車輪側端面を軌道部７２ａの車体側端面に密着させた状態で大鍔部７３が本体部７２に対して取り付けられる。 "Formation of crimped part"
As shown in FIG. 3D, a restraining ring (not shown) is used to regulate the deformation of the large collar portion 16 (shown in FIG. By caulking the vehicle body side end portion of the hub wheel material 6A (shown in FIG. 3 (c)) to the vehicle body side end surface 161a (shown in FIG. 3 (c)) of the large collar portion 16 using a hub wheel material (not shown). The caulking portion 62b is formed. In this case, when the caulking portion 62b is formed, the inner peripheral surface of the large collar portion 73 is in close contact with the outer peripheral surface of the track portion 72a, and the wheel side end surface of the large collar portion 73 is in close contact with the end surface of the track portion 72a on the vehicle body side. In this state, the large collar 73 is attached to the main body 72.

このようにして、かしめ部６２ｂを有するハブ輪６に対して内輪７（第１の内輪部材７０及び第２の内輪部材７１）が取り付けられる。   In this way, the inner ring 7 (the first inner ring member 70 and the second inner ring member 71) is attached to the hub ring 6 having the caulking portion 62b.

本実施の形態において、ハブ輪６に対する内輪７（第２の内輪部材７１）の取付時（ハブ輪用素材６Ａのかしめ時）にハブ輪用素材６Ａから内輪用素材７１Ａに作用するかしめ力は、小鍔部付き軌道部１５ａの車体側端面１５０ａに対して軸線方向に付与されるとともに、本体部１５の凸部１５ｂに対して径方向外側に付与される。このため、大鍔部１６が軸線方向に圧縮するとともに、本体部１５の凸部１５ｂが径方向外側へ変形（図２において、最大変形量δ≒０．１ｍｍ程度）して膨張する。凸部１５ｂの膨張変形は、大鍔部１６の内周面１６１ｃに及ぶことなく空隙１７で行われる。これにより、内輪用素材７１Ａに作用する径方向への膨張が抑制される。   In the present embodiment, when the inner ring 7 (second inner ring member 71) is attached to the hub wheel 6 (when the hub ring material 6A is caulked), the caulking force acting on the inner ring material 71A from the hub wheel material 6A is In addition to being provided in the axial direction with respect to the vehicle body side end surface 150a of the track portion 15a with the gavel portion, it is provided radially outward with respect to the convex portion 15b of the body portion 15. For this reason, the large collar portion 16 is compressed in the axial direction, and the convex portion 15b of the main body portion 15 is deformed radially outward (maximum deformation amount δ≈0.1 mm in FIG. 2) and expanded. The expansion and deformation of the convex portion 15 b is performed in the gap 17 without reaching the inner peripheral surface 161 c of the large collar portion 16. Thereby, the expansion to the radial direction which acts on 71 A of inner ring materials is suppressed.

[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のかしめ時に凸部１５ｂがかしめ力を受けて径方向に変形し、一方大鍔部１６にはかしめ力が径方向に及ぶことが回避される。これにより、内輪用素材７１Ａに作用する径方向のかしめ力が緩和され、内輪用素材７１Ａの径方向への膨張が抑制された内輪７（第２の内輪部材７１）をハブ輪６に取り付けることができる。この場合、ハブ輪用素材６Ａのかしめ後には、ハブ輪６に取り付けられた内輪７に発生するフープ応力が大きくならず、このため車輪用軸受装置１の腐食環境下での使用によって内輪７がその延性又は靭性を低下させず、いわゆる応力腐食割れが生じる虞を解消することができる。   During the caulking of the hub wheel material 6A, the convex portion 15b receives the caulking force and deforms in the radial direction, while the caulking force is prevented from reaching the large collar portion 16 in the radial direction. Accordingly, the inner ring 7 (second inner ring member 71) in which the radial caulking force acting on the inner ring material 71 </ b> A is reduced and the expansion of the inner ring material 71 </ b> A in the radial direction is suppressed is attached to the hub wheel 6. Can do. In this case, after the hub ring material 6A is caulked, the hoop stress generated in the inner ring 7 attached to the hub ring 6 does not increase. Therefore, the inner ring 7 is not used due to the use of the wheel bearing device 1 in a corrosive environment. The possibility of so-called stress corrosion cracking can be eliminated without reducing the ductility or toughness.

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方法並びに車輪用軸受装置を上記実施の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 method 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, and can be modified as shown below, for example.

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。   In the above-described embodiment, the case where the present invention is applied to a drive wheel bearing device has been described. However, the present invention is not limited to this, and the present invention can also 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…凹部、６２ｂ…かしめ部、６ｃ…貫通孔、６Ａ…ハブ輪用素材、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…内輪用素材、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…本体部、１５ａ…小鍔部付き軌道部、１５０ａ…車体側端面、１５１ａ…小鍔部、１５２ａ…外周面、１５ｂ…凸部、１５０ｂ…外周面、１６…大鍔部、１６０…第１の円環部、１６０ａ…内周面、１６１…第２の円環部、１６１ａ…車体側端面、１６１ｂ…車輪側端面、１６１ｃ…内周面、１７…空隙、７２…本体部、７２ａ…軌道部、７２ｂ…凸部、７２ｃ…第２の内側軌道面、７２ｄ…凹溝、７３…大鍔部、Ａ…軸受組立体、Ｏ…中心軸線、Ｄ（２ｒ）…径方向寸法、δ…最大変形量   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 ... Flange for wheel mounting, 600a ... Bolt insertion hole, 6b ... Small diameter body, 60b ... Recess, 62b ... Caulking part, 6c ... Through hole, 6A ... Material for hub wheel, 7 ... Inner ring, 70 ... 1st inner ring member, 70a ... 1st inner raceway surface, 70b ... Partition part, 70c ... Ring attachment surface, 70d ... Groove, 71 ... 2nd inner ring member, 71A ... Material for inner ring, 8 ... Hub bolt, 9 ... Pulsar ring, 10 ... ABS sensor, 11 ... Roller cage, 12 ... Sealing member, 13 ... Roller cage, 14 ... Sealing member, 15 ... Main body part, 15a ... Raceway part with small collar part, 150a ... End surface on the vehicle body side 151a ... Small part 152a ... outer peripheral surface 15b ... convex part 50b ... outer peripheral surface, 16 ... large collar portion, 160 ... first annular portion, 160a ... inner peripheral surface, 161 ... second annular portion, 161a ... vehicle body side end surface, 161b ... wheel side end surface, 161c ... inside Peripheral surface, 17 ... gap, 72 ... main body, 72a ... raceway, 72b ... convex, 72c ... second inner raceway, 72d ... concave groove, 73 ... large collar, A ... bearing assembly, O ... Center axis, D (2r) ... radial dimension, δ ... maximum deformation

Claims (2)

転動体を転動させる内輪を有する転がり軸受を介してハブ輪を回転可能に支持する車輪用軸受装置において、
前記内輪は、軌道部を有する本体部と、前記本体部に嵌合する円環状の大鍔部と、を有し、
前記本体部は、その車体側端面から軸方向車体側に突出する円環状の突出部を有し、
前記大鍔部は、前記本体部の外周面に嵌合する第１の円環部と、前記第１の円環部の内径よりも小さい内径をもって前記本体部の車体側端面に当接する第２の円環部と、を有し、
前記第２の円環部の内周面と前記突出部の外周面との間に、円環状の空隙が形成されており、
前記ハブ輪のかしめ部が前記本体部の前記突出部と前記大鍔部の車体側端面とに密着した状態で、前記空隙内において前記突出部が径方向外側に変形している、
車輪用軸受装置。 In the rolling element bearing apparatus for rotatably supporting the hub wheel via a rolling bearing having an inner ring for rolling,
The annulus includes a body portion having a track portion, and a large flange portion of the annular shape fitted to the main body portion,
The main body has an annular projecting portion that projects from the end surface on the vehicle body side toward the axial body side,
The large collar portion has a first annular portion fitted to the outer peripheral surface of the main body portion, and a second annular portion having an inner diameter smaller than the inner diameter of the first annular portion and abutting against the vehicle body side end surface of the main body portion. An annular portion of
An annular gap is formed between the inner peripheral surface of the second annular portion and the outer peripheral surface of the protruding portion,
With the caulking portion of the hub wheel being in close contact with the protruding portion of the main body portion and the vehicle body side end surface of the large collar portion, the protruding portion is deformed radially outward in the gap.
Bearing equipment for the wheels. 転動体を転動させる内輪を有する転がり軸受を介してハブ輪を回転可能に支持する車輪用軸受装置の製造方法であって、
前記内輪は、軌道部を有する本体部と、前記本体部に嵌合する円環状の大鍔部と、を有し、
前記本体部は、その車体側端面から軸方向車体側に突出する円環状の突出部を有し、
前記大鍔部は、前記本体部の外周面に嵌合する第１の円環部と、前記第１の円環部の内径よりも小さい内径をもって前記本体部の車体側端面に当接する第２の円環部と、を有し、
前記本体部と前記大鍔部とを嵌合させることにより、前記第２の円環部の内周面と前記突出部の外周面との間に円環状の空隙が形成された前記内輪を形成する工程と、
前記ハブ輪を前記内輪に挿通させる工程と、
前記ハブ輪の車体側端部を前記内輪に対してかしめることによって、前記空隙内において前記突出部が径方向外側に変形させる工程と、を有する
車輪用軸受装置の製造方法。 A wheel bearing equipment manufacturing method of rotatably supporting the hub wheel via a rolling bearing having an inner ring for the rolling roll body,
The annulus includes a body portion having a track portion, and a large flange portion of the annular shape fitted to the main body portion,
The main body has an annular projecting portion that projects from the end surface on the vehicle body side toward the axial body side,
The large collar portion has a first annular portion fitted to the outer peripheral surface of the main body portion, and a second annular portion having an inner diameter smaller than the inner diameter of the first annular portion and abutting against the vehicle body side end surface of the main body portion. An annular portion of
By fitting the main body portion and the large collar portion, the inner ring in which an annular gap is formed between the inner peripheral surface of the second annular portion and the outer peripheral surface of the protruding portion is formed. And a process of
Inserting the hub wheel through the inner ring;
A step of deforming the projecting portion radially outward in the gap by caulking a vehicle body side end of the hub wheel with respect to the inner ring.
Manufacturing method of wheel bearing device.
JP2012107060A 2012-05-08 2012-05-08 Inner ring mounting structure and mounting method in wheel bearing device, and wheel bearing device Expired - Fee Related JP5928138B2 (en)

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