JP2002339964A - Bearing device for axle - Google Patents
Bearing device for axleInfo
- Publication number
- JP2002339964A JP2002339964A JP2001144714A JP2001144714A JP2002339964A JP 2002339964 A JP2002339964 A JP 2002339964A JP 2001144714 A JP2001144714 A JP 2001144714A JP 2001144714 A JP2001144714 A JP 2001144714A JP 2002339964 A JP2002339964 A JP 2002339964A
- Authority
- JP
- Japan
- Prior art keywords
- axle
- guided
- bearing device
- inner ring
- guide surface
- 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
Links
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
- F16C25/00—Bearings for exclusively rotary movement adjustable for wear or play
- F16C25/06—Ball or roller bearings
- F16C25/08—Ball or roller bearings self-adjusting
- F16C25/083—Ball or roller bearings self-adjusting with resilient means acting axially on a race ring to preload the bearing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
- F16C19/18—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
- F16C19/181—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact
- F16C19/183—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles
- F16C19/184—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement
- F16C19/186—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement with three raceways provided integrally on parts other than race rings, e.g. third generation hubs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Support Of The Bearing (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、車両の車軸を軸心
回りに回転自在に支持するための車軸用軸受装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an axle bearing device for rotatably supporting an axle of a vehicle around an axis.
【０００２】[0002]
【従来の技術】従来の車軸用軸受装置を図５に示す。こ
れは、ブレーキディスクロータを取付けるためのハブホ
イール５０の車両インナ側に環状凹部５１を形成し、こ
の環状凹部５１にハブホイール５０とは別の内輪部材５
２を嵌合し、ハブホイール５０の車両インナ側端部を拡
径するように内輪部材５２の端面に対してかしめて、内
輪部材５２をハブホイール５０に固定している。2. Description of the Related Art A conventional axle bearing device is shown in FIG. This is because an annular recess 51 is formed on the vehicle inner side of the hub wheel 50 for mounting the brake disk rotor, and an inner ring member 5 different from the hub wheel 50 is formed in the annular recess 51.
The inner ring member 52 is fixed to the hub wheel 50 by caulking the end surface of the inner ring member 52 so as to expand the inner end of the hub wheel 50 on the vehicle inner side.
【０００３】また、ハブホイール５０の挿通穴５３に車
軸５４の端部を一体的に挿通し、車軸５４の車両アウタ
側端部をナット５５でハブホイール５０の端面に対して
締付けている。The end of the axle 54 is integrally inserted into the insertion hole 53 of the hub wheel 50, and the end of the axle 54 on the vehicle outer side is fastened to the end surface of the hub wheel 50 by a nut 55.
【０００４】そして、ハブホイール５０および内輪部材
５２を車軸５４の軸心５６回りに回転自在に支持するた
めの複列転がり軸受５７を設け、この複列転がり軸受５
７は、ナックル５８を介して車体側に固定される外輪５
９と、この外輪５９の内周面を外輪軌道とするとともに
前記ハブホイール５０の外周面および内輪部材５２の外
周面を内輪軌道とする複列の玉６０とを備えている。A double row rolling bearing 57 for rotatably supporting the hub wheel 50 and the inner ring member 52 about an axis 56 of the axle 54 is provided, and the double row rolling bearing 57 is provided.
7 is an outer ring 5 fixed to the vehicle body via a knuckle 58
9 and a plurality of rows of balls 60 having an inner peripheral surface of the outer ring 59 as an outer raceway and an outer peripheral surface of the hub wheel 50 and an outer periphery of the inner race member 52 as an inner raceway.
【０００５】[0005]
【発明が解決しようとする課題】ところで車両がカーブ
を走行する際には、軸受装置（車軸５４）に遠心力が働
き、この遠心力の大きさによっては、玉６０に対する予
圧が小さくなって軸受装置の剛性が低下してしまうこと
があった。When the vehicle travels on a curve, a centrifugal force acts on the bearing device (axle 54), and depending on the magnitude of the centrifugal force, the preload on the ball 60 is reduced and the bearing device is driven. In some cases, the rigidity of the device was reduced.
【０００６】そこで本発明は、上記課題を解決し得る車
軸用軸受装置の提供を目的とする。Accordingly, an object of the present invention is to provide an axle bearing device that can solve the above-mentioned problems.
【０００７】[0007]
【課題を解決するための手段】本発明における課題解決
手段は、それぞれ同心に配置されるとともに転がり軸受
を介して軸心回りに相対回転可能な外側部材および内側
部材を設け、この内側部材の一側の外周面に形成した環
状凹部に、前記転がり軸受の転動体の内輪軌道を有する
内輪部材を嵌合し、前記外側部材または内側部材のうち
のどちらか一方に連結される車軸に軸心方向の力が働い
た際に前記転動体に対する予圧を増加させるために、前
記内輪部材の内周面を前記環状凹部の底面である被案内
面が軸心方向に滑るのを案内するための案内面とすると
ともに、前記被案内面が案内面を滑る際に内輪部材をそ
の半径方向に拡径するための拡径手段を設けている。According to the present invention, there is provided an outer member and an inner member which are arranged concentrically and are relatively rotatable around an axis via rolling bearings. An inner ring member having an inner ring raceway of the rolling element of the rolling bearing is fitted into an annular concave portion formed on the outer peripheral surface on the side of the rolling bearing, and an axial direction is attached to an axle connected to one of the outer member and the inner member. A guide surface for guiding the guided surface, which is the bottom surface of the annular recess, to slide in the axial direction on the inner peripheral surface of the inner ring member in order to increase the preload on the rolling element when the force of In addition, when the guided surface slides on the guide surface, a diameter expanding means for expanding the diameter of the inner ring member in the radial direction is provided.
【０００８】そして前記拡径手段は、案内面および被案
内面を、軸心に対して所定の方向に傾斜させることで構
成し、あるいは前記拡径手段は、案内面および被案内面
を、軸心に対して所定の方向に傾斜させるとともに、案
内面と被案内面との接触面に拡径用玉部材を配置し、あ
るいは前記拡径手段は、案内面および被案内面を、軸心
に対して平行に配置するとともに、案内面と被案内面と
の接触面に拡径用玉部材を配置している。The diameter-enlarging means is constituted by inclining the guide surface and the guided surface in a predetermined direction with respect to the axis. While inclining in a predetermined direction with respect to the center, a diameter-enlarging ball member is arranged on the contact surface between the guide surface and the guided surface, or the diameter-enlarging means moves the guide surface and the guided surface around the axis. In addition to the arrangement, the diameter-enlarging ball member is arranged on the contact surface between the guide surface and the guided surface.
【０００９】上記構成において、例えば車両がカーブす
る路面を走行して車軸に軸心方向の力が働いた際に、被
案内面が案内面に案内されて軸心方向に滑ることで、傾
斜した案内面および被案内面によって、あるいは拡径用
玉部材によって内輪部材が半径方向に広げられて、内輪
部材の外周面を内輪軌道とした転動体に対する予圧が増
加する。In the above configuration, for example, when the vehicle travels on a curved road surface and an axial force acts on the axle, the guided surface is guided by the guide surface and slides in the axial direction, whereby the vehicle is inclined. The inner ring member is radially expanded by the guide surface and the guided surface or by the diameter expanding ball member, and the preload on the rolling element having the outer peripheral surface of the inner ring member as the inner ring raceway is increased.
【００１０】また、前記車軸に働く軸心方向の力と反対
の方向に内側部材を付勢するための付勢手段を設けた構
成によれば、車両が直線の路面を走行するようになった
場合、あるいは車両が反対側へカーブする路面を走行す
る場合でも、内輪部材はこの付勢手段によって、軸心方
向に押圧されており、従って転動体に対して所定の予圧
が付与されているため装置の剛性が低下するのが防止さ
れる。Further, according to the structure in which the biasing means for biasing the inner member in the direction opposite to the axial force acting on the axle is provided, the vehicle travels on a straight road surface. In this case, or even when the vehicle travels on a road surface that curves to the opposite side, the inner ring member is pressed in the axial direction by the biasing means, and thus a predetermined preload is applied to the rolling elements. A reduction in the rigidity of the device is prevented.
【００１１】[0011]
【発明の実施の形態】以下、本発明の実施の形態を、図
１〜図４に基づいて説明する。まず本発明における第一
の実施形態を、図１の全体断面図および図２の要部拡大
断面図に基づいて説明する。なお、図１および図２は左
側車輪における車軸用軸受装置を示しており、右側車輪
における車軸用軸受装置は左側車輪における車軸用軸受
装置と対称の構造を有しているので、詳細な説明は省略
する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to FIGS. First, a first embodiment of the present invention will be described based on an overall sectional view of FIG. 1 and an enlarged sectional view of a main part of FIG. 1 and 2 show an axle bearing device on the left wheel. Since the axle bearing device on the right wheel has a symmetrical structure with the axle bearing device on the left wheel, a detailed description will be given. Omitted.
【００１２】本発明における第一の実施形態は、軸心１
回りに回転自在な車軸２が一体的に挿通して連結される
ハブホイール（内側部材の一例）３が設けられ、このハ
ブホイール３の一側、すなわち車両インナ側の外周面に
形成した環状凹部４に、後述の被案内部材２２を介して
内輪部材５が嵌合されている。In a first embodiment of the present invention, an axis 1
A hub wheel (an example of an inner member) 3 is provided to which an axle 2 rotatable around the shaft is integrally inserted and connected, and an annular concave portion formed on one side of the hub wheel 3, that is, on the outer peripheral surface on the vehicle inner side. 4, the inner race member 5 is fitted via a guided member 22 described later.
【００１３】前記ハブホイール３および内輪部材５を前
記軸心１回りに回転自在に支持する複列外向きアンギュ
ラ玉軸受（以下単に複列転がり軸受という）６が設けら
れ、この複列転がり軸受６は、前記ハブホイール３の途
中外周面を一方の内輪軌道とし、前記内輪部材５の外周
面を他方の内輪軌道とする複列の玉７，８と、これら複
列の玉７，８の保持器９，９と、これら複列の玉７，８
の外輪軌道を有する単一の外輪１０（外側部材の一例）
と、内部に泥水等が浸入するのを防止するとともに、内
部の潤滑剤の飛散を防止するためのシール部材１１とを
備えている。A double row outward angular ball bearing (hereinafter simply referred to as a double row rolling bearing) 6 for rotatably supporting the hub wheel 3 and the inner ring member 5 around the axis 1 is provided, and the double row rolling bearing 6 is provided. Is a double row of balls 7 and 8 having an outer peripheral surface in the middle of the hub wheel 3 as one inner raceway and an outer peripheral surface of the inner race member 5 as the other inner raceway, and holding these double row balls 7 and 8. Bowls 9, 9 and these double-row balls 7, 8
Single outer ring 10 having an outer ring raceway (an example of an outer member)
And a seal member 11 for preventing intrusion of muddy water and the like into the inside and preventing scattering of the lubricant inside.
【００１４】この外輪１０の外周面途中には、径方向外
方に突出する取付けフランジ１２が形成され、この取付
けフランジ１２は、ボルト１３を介してナックルＮに固
定されることで外輪１０は車体側に非回転に支持されて
いる。A mounting flange 12 projecting radially outward is formed in the middle of the outer peripheral surface of the outer ring 10. The mounting flange 12 is fixed to a knuckle N via a bolt 13 so that the outer ring 10 It is supported non-rotatably on the side.
【００１５】前記ハブホイール３の中心には、車軸２が
スプラインＳ嵌合する挿通穴１４が形成され、車両アウ
タ側はナット１７によりハブホイール３の端部に締付け
られている。ハブホイール３の車両アウタ側外周面に
は、図示しないブレーキディスクロータを取付けるため
のハブフランジ１５が形成され、このハブフランジ１５
にはハブボルト１６が圧入されている。At the center of the hub wheel 3, there is formed an insertion hole 14 into which the axle 2 is fitted with a spline S. The outer side of the vehicle is fastened to an end of the hub wheel 3 by a nut 17. A hub flange 15 for mounting a brake disc rotor (not shown) is formed on the outer peripheral surface of the hub wheel 3 on the vehicle outer side.
The hub bolt 16 is press-fitted into the.
【００１６】そして前記ハブホイール３は、前記環状凹
部４に嵌着されるとともに後述の案内面２０に案内され
て、所定の方向すなわち車両アウタ側に向けて縮径する
よう傾斜した環状の被案内面２１を形成した前述の被案
内部材２２を有し、この被案内部材２２は、ハブホイー
ル３とは別体に形成されたもので、ハブホイール３の車
両インナ側端部を拡径するように形成したかしめ部２３
によってハブホイール３と一体的に構成されている。す
なわち、被案内部材２２の被案内面２１が環状凹部４の
底面として用いられる。The hub wheel 3 is fitted in the annular recess 4 and is guided by a guide surface 20, which will be described later. The hub wheel 3 is an annular guided member that is inclined so as to reduce its diameter in a predetermined direction, that is, toward the vehicle outer side. It has the above-mentioned guided member 22 having a surface 21 formed thereon, and this guided member 22 is formed separately from the hub wheel 3 so as to enlarge the end of the hub wheel 3 on the vehicle inner side. Caulking part 23 formed in
And is integrally formed with the hub wheel 3. That is, the guided surface 21 of the guided member 22 is used as the bottom surface of the annular recess 4.
【００１７】また、車両の走行中に前記ハブホイール３
に軸心１方向（車両アウタ側）の遠心力が働いた際に、
前記内輪部材５の外周面を内輪軌道とする玉８に付与す
る予圧を増加させるために、内輪部材５の内周面に形成
されて被案内部材２２（ハブホイール３）の外周面に形
成した被案内面２１が遠心力に応じて滑るのを案内する
ための前記案内面２０と、被案内面２１が案内面２０を
滑る際に内輪部材５を半径方向に広げるための拡径手段
２４とを有している。Further, the hub wheel 3 can be moved while the vehicle is running.
When the centrifugal force in the axis 1 direction (outer side of the vehicle) acts on
In order to increase the preload applied to the ball 8 having the outer peripheral surface of the inner ring member 5 as the inner raceway, it is formed on the inner peripheral surface of the inner ring member 5 and formed on the outer peripheral surface of the guided member 22 (hub wheel 3). The guide surface 20 for guiding the guided surface 21 to slide according to the centrifugal force, and the diameter expanding means 24 for expanding the inner race member 5 in the radial direction when the guided surface 21 slides on the guide surface 20. have.
【００１８】この拡径手段２４は、前記案内面２０およ
び被案内面２１を、軸心１に対して前述のように傾斜さ
せること、および案内面２０と被案内面２１の接触面に
形成した環状取付け溝２０ａ，２１ａに一列で設けた拡
径用玉部材２６（ボールクランプあるいはボールランプ
ともいう）を配置したことで構成しており、この拡径用
玉部材２６は、前記内輪部材５の外周面内輪軌道とする
玉８を配置した径方向断面と同一の断面上に配置されて
いる。The diameter expanding means 24 is formed such that the guide surface 20 and the guided surface 21 are inclined with respect to the axis 1 as described above, and the contact surface between the guide surface 20 and the guided surface 21 is formed. A ball-expansion ball member 26 (also referred to as a ball clamp or a ball ramp) provided in a line in the annular mounting grooves 20a and 21a is configured. It is arranged on the same cross section as the radial cross section in which the ball 8 as the outer peripheral surface inner ring raceway is arranged.
【００１９】また、かしめ部２３の車両アウタ側面と内
輪部材５の車両インナ側面との間に、かしめ部２３（ハ
ブホイール３）を車両インナ側に付勢するための圧縮ば
ね２７（付勢手段の一例）が介装されている。A compression spring 27 (biasing means) for urging the caulking portion 23 (hub wheel 3) toward the vehicle inner side between the vehicle outer side surface of the caulking portion 23 and the vehicle inner side surface of the inner race member 5. Example) is interposed.
【００２０】上記構成において、車両が右側へカーブす
る路面を走行する場合、車軸２に対して紙面左方向Ｌの
遠心力が働く。そうすると車軸２によって、かしめ部２
３を介して被案内部材２２が圧縮ばね２７の弾性に抗し
て、図２の仮想線で示すように左方へ押圧される。この
とき、拡径用玉部材２６の軸心１方向位置は保持された
ままで、被案内部材２２の被案内面２１が内輪部材５の
案内面２０に案内されて案内面２０に沿って滑り、また
環状取付け溝２１ａが左方へ移動する。In the above configuration, when the vehicle travels on a road surface that curves rightward, a centrifugal force acts on the axle 2 in the left direction L on the paper. Then, by the axle 2, the caulking part 2
3, the guided member 22 is pressed to the left against the elasticity of the compression spring 27 as shown by the imaginary line in FIG. At this time, the guided surface 21 of the guided member 22 is guided by the guide surface 20 of the inner ring member 5 and slides along the guide surface 20, while the position of the diameter-enlarging ball member 26 in the axial center 1 direction is maintained, Further, the annular mounting groove 21a moves to the left.
【００２１】これによって拡径用玉部材２６が、被案内
面２１で径方向外方に押圧され、拡径用玉部材２６によ
って内輪部材５が径方向外方に押圧されて、内輪部材５
が拡径する。これによって内輪部材５の外周面を内輪軌
道とする玉８に対して予圧が増大され、車軸用軸受装置
の剛性が向上し、車両の操舵性が向上する。As a result, the diameter-enlarging ball member 26 is pressed radially outward on the guided surface 21, and the inner-ring member 5 is pressed radially outward by the diameter-expanding ball member 26.
Expands in diameter. As a result, the preload is increased for the ball 8 having the outer peripheral surface of the inner race member 5 as the inner raceway, the rigidity of the axle bearing device is improved, and the steerability of the vehicle is improved.
【００２２】そして、車両が直線の路面を走行するよう
になって車軸２が定位置に復元すると、この動作に伴な
って被案内部材２２（被案内面２１）が定位置に復元す
る。When the vehicle is running on a straight road surface and the axle 2 is restored to the home position, the guided member 22 (guided surface 21) is restored to the home position with this operation.
【００２３】なお、内輪部材５は圧縮ばね２７によって
軸心１方向に沿う方向で車両アウタ側に押圧されてお
り、従って玉７，８に対して所定の予圧が付与されてい
るので、車両が直線の路面を走行するようになった場
合、あるいは車両が左側へカーブする路面を走行する場
合でも、車軸用軸受装置の剛性が低下することはない。The inner race member 5 is pressed by the compression spring 27 toward the vehicle outer side in the direction along the axis 1 and a predetermined preload is applied to the balls 7 and 8, so that the vehicle Even when the vehicle travels on a straight road surface or when the vehicle travels on a road surface that curves to the left, the rigidity of the axle bearing device does not decrease.
【００２４】以上のことは、右側車輪における車軸用軸
受装置においては、部品の動き、働く遠心力が逆向きで
あるだけで、左側車輪における車軸用軸受装置と作用効
果に相違はないので、詳細な説明は省略する。The above description is based on the fact that the operation and effect of the axle bearing device for the left wheel are not different from those of the axle bearing device for the left wheel, since the movement of the components and the working centrifugal force are only reversed in the right wheel. Detailed description is omitted.
【００２５】次に、図３の要部拡大図に基づいて本発明
の第二の実施形態を説明する。第二の実施の形態に係る
車軸用軸受装置において、拡径手段２４は、内輪部材５
の内周面に形成されて被案内部材２２の外周面に形成し
た被案内面２１が遠心力に応じて滑るのを案内するため
の案内面２０と、被案内面２１が案内面２０を滑る際に
内輪部材５を半径方向に広げるための拡径用玉部材２６
とを有し、前記案内面２０および被案内面２１は、軸心
１に対して平行に形成され、拡径用玉部材２６は、案内
面２０と被案内面２１の接触面に形成した環状取付け溝
２０ａ，２１ａに一列で設けている。なお、この拡径用
玉部材２６は、前記内輪部材５の外周面内輪軌道とする
玉８を配置した径方向断面と同一の断面上に配置されて
いる。Next, a second embodiment of the present invention will be described with reference to an enlarged view of a main part of FIG. In the axle bearing device according to the second embodiment, the diameter expanding means 24 includes the inner ring member 5.
A guide surface 20 formed on the inner peripheral surface of the guide member 20 for guiding the guided surface 21 formed on the outer peripheral surface of the guided member 22 to slide according to centrifugal force, and the guided surface 21 slides on the guide surface 20 Ball member 26 for expanding the inner race member 5 in the radial direction
The guide surface 20 and the guided surface 21 are formed in parallel with the axis 1, and the ball-expanding ball member 26 has an annular shape formed on the contact surface between the guide surface 20 and the guided surface 21. They are provided in a row in the mounting grooves 20a and 21a. The diameter-enlarging ball member 26 is disposed on the same cross section as the radial cross-section in which the ball 8 serving as the outer race inner raceway of the inner race member 5 is disposed.
【００２６】他の構成は上記第一の実施の形態と同様で
あるので、同一の符号を付してその説明を省略する。Since the other structure is the same as that of the first embodiment, the same reference numerals are given and the description is omitted.
【００２７】上記構成において、車両が右側へカーブす
る路面を走行する場合、車軸２に対して紙面左方向Ｌの
遠心力が働き、車軸２によって、かしめ部２３を介して
被案内部材２２が圧縮ばね２７の弾性に抗して、図３の
仮想線で示すように左方へ押圧され、拡径用玉部材２６
の軸心１方向位置は保持されたままで、被案内部材２２
の被案内面２１が内輪部材５の案内面２０に案内されて
案内面２０に沿って滑り、環状取付け溝２１ａが左方へ
移動して拡径用玉部材２６が径方向外方に押圧され、拡
径用玉部材２６によって内輪部材５が方向外方に押圧さ
れて拡径する。In the above configuration, when the vehicle travels on a road surface that curves to the right, a centrifugal force acts on the axle 2 in the leftward direction on the paper surface, and the axle 2 compresses the guided member 22 via the caulking portion 23. 3 is pressed to the left against the elasticity of the spring 27 as indicated by the imaginary line in FIG.
Of the guided member 22 while the position of the
Is guided along the guide surface 20 of the inner ring member 5 and slides along the guide surface 20, the annular mounting groove 21a moves to the left, and the ball-expanding ball member 26 is pressed radially outward. The inner ring member 5 is pressed outward by the diameter expanding ball member 26 to expand the diameter.
【００２８】これによって、内輪部材５の外周面を内輪
軌道とする玉８に対する予圧が増大し、車軸用軸受装置
の剛性が向上して車両の操舵性が向上する。他の作用効
果は上記第一の実施の形態と同様であるので省略する。As a result, the preload on the ball 8 having the outer peripheral surface of the inner race member 5 as the inner raceway is increased, the rigidity of the axle bearing device is improved, and the steerability of the vehicle is improved. Other functions and effects are the same as in the first embodiment, and a description thereof will be omitted.
【００２９】次に、図４の要部拡大図に基づいて本発明
の第三の実施形態を説明する。第三の実施の形態に係る
車軸用軸受装置において、拡径手段２４は、内輪部材５
の内周面に形成されて被案内部材２２の外周面に形成し
た被案内面２１が遠心力に応じて滑るのを案内するため
の案内面２０を有し、前記案内面２０および被案内面２
１を、軸心１に対して第一の実施形態と同様に傾斜させ
ている。他の構成は上記第一の実施形態と同様であるの
で省略する。Next, a third embodiment of the present invention will be described with reference to FIG. In the axle bearing device according to the third embodiment, the diameter expanding means 24 includes the inner ring member 5.
A guide surface 20 formed on the inner peripheral surface of the guide member 20 for guiding the guided surface 21 formed on the outer peripheral surface of the guided member 22 to slide according to the centrifugal force, the guide surface 20 and the guided surface 2
1 is inclined with respect to the axis 1 as in the first embodiment. Other configurations are the same as in the first embodiment, and a description thereof will be omitted.
【００３０】上記構成において、車両が右側へカーブす
る路面を走行する場合、車軸２に対して紙面左方向Ｌの
遠心力が働き、車軸２によってかしめ部２３を介して被
案内部材２２が圧縮ばね２７の弾性に抗して、図４の仮
想線で示すように左方へ押圧され、これによって内輪部
材５が径方向外方に押圧されて内輪部材５が拡径され、
これによって内輪部材５の外周面を内輪軌道とする玉８
に対して予圧が増大し、車軸用軸受装置の剛性が向上す
る。他の作用効果は上記第一の実施の形態と同様である
ので省略する。In the above configuration, when the vehicle travels on a road surface that curves to the right, a centrifugal force acts on the axle 2 in the leftward direction on the paper surface, and the guided member 22 is compressed by the axle 2 via the caulking portion 23. Against the elasticity of the inner ring member 27, the inner ring member 5 is pressed radially outward as shown by the imaginary line in FIG.
As a result, the ball 8 having the outer peripheral surface of the inner race member 5 as the inner raceway.
, The preload increases, and the rigidity of the axle bearing device improves. Other functions and effects are the same as those in the first embodiment, and a description thereof will be omitted.
【００３１】なお、本発明は上記実施の形態に限定され
るものではなく、ハブホイール３と外輪１０とは軸心１
回りに相対的に回転する構成のものであればよく、上記
各実施の形態では、本発明を駆動輪側に適用させた場合
であって、外輪１０を車体側へ固定し、複列転がり軸受
６を介してハブホイール３を軸心１回りに回転自在とし
た内輪回転型の車軸用軸受装置として説明したが、図示
しないが、例えば本発明を従動輪に適用させて、車体側
へ固定した支軸に対して転がり軸受を介して外輪を軸心
回りに回転自在に構成し、この外輪に車輪を取付ける外
輪回転型の車軸用軸受装置にも適用可能である。The present invention is not limited to the above embodiment, and the hub wheel 3 and the outer ring 10 are
In any of the above embodiments, the present invention is applied to the drive wheel side, and the outer ring 10 is fixed to the vehicle body side, and the double row rolling bearing is used. Although described as an inner ring rotation type axle bearing device in which the hub wheel 3 is rotatable around the axis 1 via 6, the invention is applied to a driven wheel, not shown, but fixed to the vehicle body side, for example. The outer ring is configured to be rotatable around the axis via a rolling bearing with respect to the support shaft, and the present invention is also applicable to an outer ring rotation type axle bearing device in which wheels are mounted on the outer ring.
【００３２】[0032]
【発明の効果】以上の説明から明らかな通り、本発明
は、内輪部材の内周面に形成されて、内側部材の外周面
に形成された被案内面が滑るのを案内する案内面と、被
案内面が案内面を滑る際に内輪部材を半径方向に広げる
ための拡径手段とを有したので、回転軸に軸心方向の力
が働いた際に、内輪部材の外周面を内輪軌道とする玉に
付与する予圧を増加させ、剛性を向上させることができ
る。As apparent from the above description, the present invention provides a guide surface formed on the inner peripheral surface of the inner ring member for guiding the guided surface formed on the outer peripheral surface of the inner member to slide. A radially expanding means for radially expanding the inner ring member when the guided surface slides on the guide surface, so that when an axial force acts on the rotating shaft, the outer peripheral surface of the inner ring member moves along the inner ring raceway. The rigidity can be improved by increasing the preload applied to the ball.
【図１】本発明の軸受装置における第一の実施形態を示
す全体構成断面図である。FIG. 1 is an overall configuration sectional view showing a first embodiment of a bearing device of the present invention.
【図２】同じく要部拡大断面図である。FIG. 2 is an enlarged sectional view of a main part of the same.
【図３】本発明の軸受装置における第二の実施形態を示
す要部拡大断面図である。FIG. 3 is an enlarged sectional view of a main part showing a second embodiment of the bearing device of the present invention.
【図４】本発明の軸受装置における第三の実施形態を示
す要部拡大断面図である。FIG. 4 is an enlarged sectional view of a main part showing a third embodiment of the bearing device of the present invention.
【図５】従来の軸受装置の全体構成を示す断面図であ
る。FIG. 5 is a cross-sectional view showing the overall configuration of a conventional bearing device.
１ 軸心 ２ 車軸 ５ 内輪部材 ８ 玉 ２０ 案内面 ２１ 被案内面 ２１ａ 環状取付け溝 ２２ 被案内部材 ２３ かしめ部 ２６ 拡径用玉部材 ２７ 圧縮ばね Reference Signs List 1 shaft center 2 axle 5 inner ring member 8 ball 20 guide surface 21 guided surface 21a annular mounting groove 22 guided member 23 caulked portion 26 ball member for diameter expansion 27 compression spring
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 3J012 AB02 AB04 AB05 BB03 CB02 CB10 DB07 DB14 EB14 FB09 FB10 HB02 3J101 AA02 AA32 AA43 AA54 AA62 AA72 BA53 BA56 FA41 GA03 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3J012 AB02 AB04 AB05 BB03 CB02 CB10 DB07 DB14 EB14 FB09 FB10 HB02 3J101 AA02 AA32 AA43 AA54 AA62 AA72 BA53 BA56 FA41 GA03
Claims (5)
り軸受を介して軸心回りに相対回転可能な外側部材およ
び内側部材を設け、 この内側部材の一側の外周面に形成した環状凹部に、前
記転がり軸受の転動体の内輪軌道を有する内輪部材を嵌
合し、 前記外側部材または内側部材のうちの何れか一方に連結
される車軸に軸心方向の力が働いた際に前記転動体に対
する予圧を増加させるために、前記内輪部材の内周面
を、前記環状凹部の底面である被案内面が軸心方向に滑
るのを案内するための案内面とするとともに、前記被案
内面が案内面を滑る際に内輪部材をその半径方向に拡径
するための拡径手段を設けたことを特徴とする車軸用軸
受装置。An outer member and an inner member which are arranged concentrically and are relatively rotatable around an axis via a rolling bearing are provided, and an annular concave portion formed on an outer peripheral surface on one side of the inner member is provided. An inner ring member having an inner ring raceway of a rolling element of a rolling bearing is fitted, and a preload is applied to the rolling element when an axial force acts on an axle connected to one of the outer member and the inner member. In order to increase the inner peripheral member, the inner peripheral surface of the inner ring member is used as a guide surface for guiding the guided surface, which is the bottom surface of the annular concave portion, to slide in the axial direction, and the guided surface is a guide surface. An axle bearing device provided with a diameter expanding means for expanding the diameter of the inner ring member in the radial direction when sliding.
軸心に対して所定の方向に傾斜させることで構成したこ
とを特徴とする請求項１記載の車軸用軸受装置。2. The diameter-enlarging means includes a guide surface and a guided surface,
The axle bearing device according to claim 1, characterized in that the axle is inclined in a predetermined direction with respect to the shaft center.
軸心に対して所定の方向に傾斜させるとともに、案内面
と被案内面との接触面に拡径用玉部材を配置したことで
構成したことを特徴とする請求項１記載の車軸用軸受装
置。3. The diameter expanding means includes a guide surface and a guided surface,
The axle bearing device according to claim 1, characterized in that the axle is inclined in a predetermined direction with respect to the shaft center, and a ball-expansion ball member is disposed on a contact surface between the guide surface and the guided surface. .
軸心に対して平行に配置するとともに、案内面と被案内
面との接触面に拡径用玉部材を配置したことで構成した
ことを特徴とする請求項１記載の車軸用軸受装置。4. The diameter expanding means includes a guide surface and a guided surface,
The axle bearing device according to claim 1, characterized in that the axle bearing device is arranged in parallel with the axis, and a ball-expansion ball member is arranged on a contact surface between the guide surface and the guided surface.
内側部材を付勢するための付勢手段を設けたことを特徴
とする請求項１ないし請求項４の何れかに記載の車軸用
軸受装置。5. The device according to claim 1, further comprising an urging means for urging the inner member in a direction opposite to the axial force acting on the axle. Axle bearing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001144714A JP2002339964A (en) | 2001-05-15 | 2001-05-15 | Bearing device for axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001144714A JP2002339964A (en) | 2001-05-15 | 2001-05-15 | Bearing device for axle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002339964A true JP2002339964A (en) | 2002-11-27 |
Family
ID=18990620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001144714A Pending JP2002339964A (en) | 2001-05-15 | 2001-05-15 | Bearing device for axle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002339964A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004109133A1 (en) | 2003-06-03 | 2004-12-16 | Ntn Corporation | Bearing device for wheel |
| JP2010508480A (en) * | 2006-11-03 | 2010-03-18 | シャエフラー カーゲー | Bearing structure for rotatably supporting a planetary gear on a planetary carrier |
| DE102010043599A1 (en) * | 2010-11-09 | 2012-05-10 | Zf Friedrichshafen Ag | Bearing arrangement for shaft of vehicle, has fastening element for axial fixing of bearing inner ring, which is deformable clamping element with preset elastic modulus between inner ring and rotational torque transferring component |
| JP2013249955A (en) * | 2012-05-31 | 2013-12-12 | Ab Skf | Rolling bearing assembly device for steering column |
| WO2023000615A1 (en) * | 2021-07-20 | 2023-01-26 | 人本股份有限公司 | Rolling bearing that automatically eliminates installation tilt |
-
2001
- 2001-05-15 JP JP2001144714A patent/JP2002339964A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004109133A1 (en) | 2003-06-03 | 2004-12-16 | Ntn Corporation | Bearing device for wheel |
| US7771124B2 (en) * | 2003-06-03 | 2010-08-10 | Ntn Corporation | Bearing apparatus for a wheel of vehicle |
| JP2010508480A (en) * | 2006-11-03 | 2010-03-18 | シャエフラー カーゲー | Bearing structure for rotatably supporting a planetary gear on a planetary carrier |
| DE102010043599A1 (en) * | 2010-11-09 | 2012-05-10 | Zf Friedrichshafen Ag | Bearing arrangement for shaft of vehicle, has fastening element for axial fixing of bearing inner ring, which is deformable clamping element with preset elastic modulus between inner ring and rotational torque transferring component |
| JP2013249955A (en) * | 2012-05-31 | 2013-12-12 | Ab Skf | Rolling bearing assembly device for steering column |
| WO2023000615A1 (en) * | 2021-07-20 | 2023-01-26 | 人本股份有限公司 | Rolling bearing that automatically eliminates installation tilt |
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