JP2008138699A - Roller bearing unit for wheel - Google Patents

Roller bearing unit for wheel Download PDF

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Publication number
JP2008138699A
JP2008138699A JP2006323010A JP2006323010A JP2008138699A JP 2008138699 A JP2008138699 A JP 2008138699A JP 2006323010 A JP2006323010 A JP 2006323010A JP 2006323010 A JP2006323010 A JP 2006323010A JP 2008138699 A JP2008138699 A JP 2008138699A
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Prior art keywords
inner ring
wheel
inner shaft
rolling bearing
bearing device
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JP2006323010A
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Japanese (ja)
Inventor
Changxin Yu
長シン 于
Katsuyuki Harada
勝之 原田
淑人 ▲高▼田
Yoshito Takada
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JTEKT Corp
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JTEKT Corp
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Priority to JP2006323010A priority Critical patent/JP2008138699A/en
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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
    • F16C19/02—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
    • F16C2229/00—Setting preload
    • 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

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  • Mounting Of Bearings Or Others (AREA)
  • Rolling Contact Bearings (AREA)
  • Support Of The Bearing (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a roller bearing unit for wheel which can apply a pre-load easily and exactly while attaining miniaturization. <P>SOLUTION: A roller bearing unit 10 for wheel comprises: an inner shaft 2 with a flange which keeps the wheel attached in one end; an outer ring 3 coaxially arranged in a periphery side of the inner shaft 2 through double row ball 4; and an inner ring member 9 fitted over the other end of the inner ring 2. The roller bearing unit 1 for wheel has a disk portion 11 which contacts with an end face of the inner ring member 9, and prevents the inner ring member 9 from moving to the other end side in the axial direction, and a male screw portion 12 which projects from the disk portion 11 to one end side in the axial direction, and also is provided with an inner ring fixing member 10 fixed to the inner ring 2 by screwing this male screw portion 12 into a screw hole 2d opening in the other end face 2c of the inner ring 2. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、例えば、自動車等の車輪を支持する車輪用転がり軸受装置に関する。   The present invention relates to a wheel rolling bearing device that supports wheels of, for example, an automobile.

従来から、自動車などの車輪を支持するために、車輪を取り付けるためのフランジを有する車輪用転がり軸受装置が用いられている。このような、車輪用転がり軸受装置には、一端部に車輪が取り付けられるフランジが形成された内軸と、複列の転動体を介在して前記内軸の外周側に同心に配置された外輪と、前記複列の転動体の内、他端側に位置する列の転動体の軌道が外周に形成されるとともに前記内軸の他端部に外嵌された内輪部材と、を備えたものがある。
上記の車輪用転がり軸受装置においては、軸受隙間（予圧）を付与するために、内輪部材の軸方向への移動を規制しかつ内輪部材の軸方向位置の位置決めを行う必要がある。このため、内軸の他端面から突設した雄ねじ部と、この雄ねじ部に螺合し、内輪部材の端面に当接して当該内輪部材の移動を規制するナットとを有するものや、内軸の他端部を径外方向にかしめることで、内輪部材の移動を規制するものがあった（例えば、特許文献１，２参照）。 Conventionally, in order to support a wheel of an automobile or the like, a wheel rolling bearing device having a flange for mounting the wheel has been used. In such a rolling bearing device for a wheel, an inner shaft in which a flange to which a wheel is attached is formed at one end, and an outer ring arranged concentrically on the outer peripheral side of the inner shaft with a double row rolling element interposed therebetween. And an inner ring member that is formed on the outer circumference of the row of rolling elements located on the other end side of the double row rolling elements and is fitted on the other end of the inner shaft. There is.
In the wheel rolling bearing device described above, in order to provide a bearing clearance (preload), it is necessary to restrict the movement of the inner ring member in the axial direction and to position the axial position of the inner ring member. For this reason, there is a male screw portion protruding from the other end surface of the inner shaft, and a nut that is screwed into the male screw portion and abuts against the end surface of the inner ring member to restrict the movement of the inner ring member. There are some that restrict the movement of the inner ring member by caulking the other end in the radially outward direction (see, for example, Patent Documents 1 and 2).

特開平１−２５４４０１号公報（図１）JP-A-1-254401 (FIG. 1) 特開２００１−２２１２４１号公報（図４）Japanese Patent Laying-Open No. 2001-221241 (FIG. 4)

上記のナットを用いて内輪部材の移動を規制する転がり軸受装置では、内軸の他端面から突設した雄ねじ部を有するため、当該車輪用転がり軸受装置の軸方向寸法が比較的長くなり、コンパクト性に欠けるという問題がある。
他方、内軸の他端部をかしめて内輪部材の移動を規制する転がり軸受装置では、上記のような雄ねじ部及びナットを必要としないので、コンパクトなものとなるが、内軸他端部をかしめるといった塑性加工を行いながら内輪部材の軸方向位置を正確に位置決めすることで、予圧を付与することとなる。このため、正確に予圧を付与するためには、生産工程において内輪部材の位置決め等を精密に測定しながら加工する必要がある等、上記ナットを用いた場合と比較して、製造が煩雑になりコスト高となる問題がある。加えて、内軸の他端部をかしめた転がり軸受装置において、例えば、当該転がり軸受装置に内軸の回転速度を検知するためのパルサリングを取り付けるには、かしめられた内軸の他端部にパルサリングを取り付けることは困難であるので、通常、内輪部材の外周面に外嵌固定される。この場合、パルサリングが外嵌されることで、内輪部材には変形が生じ、場合によっては、転がり軸受装置に付与された予圧が変動するおそれがある。このため、予圧の変動を予測した上で、内輪部材の位置決めを行う必要があり、正確に予圧を付与するためには、さらに製造が煩雑となる。
本発明はこのような事情に鑑みてなされたものであり、コンパクト化を図りつつ、容易かつ正確に予圧を付与することができる車輪用転がり軸受装置を提供することを目的とする。 The rolling bearing device that restricts the movement of the inner ring member using the nut described above has a male thread portion protruding from the other end surface of the inner shaft, so that the axial dimension of the rolling bearing device for the wheel is relatively long and compact. There is a problem of lack of sex.
On the other hand, the rolling bearing device that regulates the movement of the inner ring member by crimping the other end portion of the inner shaft does not require the male screw portion and the nut as described above. The preload is applied by accurately positioning the axial position of the inner ring member while performing plastic working such as caulking. For this reason, in order to accurately apply the preload, it is necessary to perform processing while accurately measuring the positioning of the inner ring member in the production process. There is a problem of high costs. In addition, in a rolling bearing device in which the other end portion of the inner shaft is caulked, for example, in order to attach a pulsar ring for detecting the rotational speed of the inner shaft to the rolling bearing device, the other end portion of the caulked inner shaft is attached. Since it is difficult to attach the pulsar ring, it is usually fitted and fixed to the outer peripheral surface of the inner ring member. In this case, the inner ring member is deformed by the external fitting of the pulsar ring, and in some cases, the preload applied to the rolling bearing device may fluctuate. For this reason, it is necessary to position the inner ring member after predicting fluctuations in the preload, and manufacturing is further complicated in order to accurately apply the preload.
This invention is made | formed in view of such a situation, and it aims at providing the rolling bearing apparatus for wheels which can provide a preload easily and correctly, achieving compactness.

上記目的を達成するための本発明の車輪用転がり軸受装置は、一端部に車輪が取り付けられるフランジが形成された内軸と、複列の転動体を介在して前記内軸の外周側に同心に配置された外輪と、前記複列の転動体の内、他端側に位置する列の転動体の軌道が外周に形成されるとともに前記内軸の他端部に外嵌された内輪部材と、前記内輪部材の端面に当接し当該内輪部材の軸方向他端側への移動を規制する円盤部、及びこの円盤部から軸方向一端側に突設された雄ねじ部を有し、この雄ねじ部を、前記内軸の他端面に開口し軸心と同心で軸方向一端側に向かって延びるねじ孔に螺合することで前記内軸に固定されている内輪固定部材と、を備えたことを特徴としている。   In order to achieve the above object, a rolling bearing device for a wheel according to the present invention comprises an inner shaft having a flange attached to a wheel at one end, and a concentric outer periphery of the inner shaft with a double row of rolling elements interposed therebetween. An outer ring disposed on the other end of the double row of rolling elements, and an inner ring member formed on the outer periphery of the row of rolling elements located on the other end side and externally fitted to the other end of the inner shaft. A disk portion that contacts the end surface of the inner ring member and restricts movement of the inner ring member toward the other end in the axial direction; and a male screw portion that protrudes from the disk portion toward the one end side in the axial direction. And an inner ring fixing member fixed to the inner shaft by being screwed into a screw hole concentric with the shaft and extending toward one end in the axial direction. It is a feature.

上記のように構成された車輪用転がり軸受装置によれば、軸方向一端側に突設した雄ねじ部によって内軸の他端面に固定された内輪固定部材の円盤部によって、内輪部材の軸方向位置の移動を規制できるので、上記従来例のように、内軸の他端面からナットを螺合するための雄ねじ等を突設する必要がない。このため、当該車輪用転がり軸受装置の軸方向寸法を短くでき、コンパクト化を図ることができる。
また、内輪固定部材は、内軸に設けられたねじ孔に対して、雄ねじ部を螺合することで固定されているので、内軸に対する内輪部材の軸方向位置の調整が容易かつ自在となる。このため、当該車輪用転がり軸受装置に必要な予圧を正確に付与することが容易となる。 According to the rolling bearing device for a wheel configured as described above, the position of the inner ring member in the axial direction is determined by the disk portion of the inner ring fixing member fixed to the other end surface of the inner shaft by the male screw portion protruding on one end side in the axial direction. Therefore, unlike the conventional example, it is not necessary to project a male screw or the like for screwing a nut from the other end surface of the inner shaft. For this reason, the axial direction dimension of the said rolling bearing device for wheels can be shortened, and compactization can be achieved.
Further, since the inner ring fixing member is fixed by screwing the male screw part into the screw hole provided in the inner shaft, the axial position of the inner ring member relative to the inner shaft can be easily and freely adjusted. . For this reason, it becomes easy to give the preload required for the said rolling bearing apparatus for wheels correctly.

また、上記車輪用転がり軸受装置に車輪の回転数を検知するセンサを設ける場合には、前記円盤部に、前記内軸の回転状態を検出するセンサが対向配置される被検出部を有するパルサリングを外嵌することができる。この場合、パルサリングは円盤部に外嵌されるため、内輪部材には、変形等は生じない。従って、パルサリングを取り付けることによっては、転がり軸受装置の予圧に変動は生じない。この結果、当該転がり軸受装置に予圧を付与する際に、パルサリングを取り付けることによる予圧の変動を考慮する必要が無くなるので、車輪用転がり軸受装置に必要な予圧を正確に付与することがより容易となる。   In addition, when the wheel rolling bearing device is provided with a sensor for detecting the rotational speed of the wheel, a pulser ring having a detected part in which the sensor for detecting the rotational state of the inner shaft is arranged to face the disk part. Can be fitted externally. In this case, since the pulsar ring is externally fitted to the disk portion, the inner ring member is not deformed. Therefore, by attaching the pulsar ring, the preload of the rolling bearing device does not vary. As a result, when applying the preload to the rolling bearing device, it is no longer necessary to consider fluctuations in the preload caused by attaching the pulsar ring, so that it is easier to accurately apply the preload necessary for the wheel rolling bearing device. Become.

さらに、前記円盤部の外周端面に、前記内軸の回転状態を検出するセンサが対向配置される被検出部を形成することで、パルサリングを別部材として取り付ける必要が無くなり、部品点数を減らすことができ、低コスト化が可能となる。   Furthermore, by forming a detected portion in which a sensor for detecting the rotation state of the inner shaft is opposed to the outer peripheral end surface of the disk portion, it is not necessary to attach a pulsar ring as a separate member, thereby reducing the number of parts. And cost reduction is possible.

本発明の車輪用転がり軸受装置によれば、軸方向一端側に突設した雄ねじ部を内軸端面のねじ孔に螺合して固定される内輪固定部材によって、内輪部材を固定したので、コンパクト化を図りつつ、容易かつ正確に予圧を付与することができる。   According to the rolling bearing device for a wheel of the present invention, the inner ring member is fixed by the inner ring fixing member that is fixed by screwing the male thread portion protruding on one end side in the axial direction into the screw hole of the inner shaft end surface, so that the compact It is possible to easily and accurately apply the preload while achieving the above.

次に、本発明の好ましい実施形態について添付図面を参照しながら説明する。図１は本発明の一実施形態である車輪用転がり軸受装置の構成を示す断面図であり、図２は、図１中の車輪用転がり軸受装置の一部欠截斜視図である。この車輪用転がり軸受装置１は、自動車などの車両の車輪を懸架装置に対して回転自在に支持するものである。   Next, preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a sectional view showing a configuration of a wheel rolling bearing device according to an embodiment of the present invention, and FIG. 2 is a partially broken perspective view of the wheel rolling bearing device in FIG. The wheel rolling bearing device 1 supports a wheel of a vehicle such as an automobile so as to be rotatable with respect to a suspension device.

図１及び図２において、車輪用転がり軸受装置１は、複列のアンギュラ玉軸受を構成しており、一端部に図示しない車輪が取り付けられる内軸２と、内軸２の外周側に同心に配置された外輪３と、内軸２と外輪３の間に介在した転動体としての複数の玉４と、これら玉４を周方向に等配に保持する保持器５と、内軸２と外輪３との間の環状の隙間を密封するシール部材６と、を備えている。
外輪３は、車両側に固定される固定輪であり、外周面には車両の懸架装置に取り付けるための取付フランジＴが形成されている。また、その内周面には玉４が転動する第１及び第２の外輪軌道３ａ，３ｂが形成されている。 1 and 2, a rolling bearing device 1 for a wheel constitutes a double-row angular ball bearing, and an inner shaft 2 to which a wheel (not shown) is attached at one end and a concentric outer peripheral side of the inner shaft 2. The arranged outer ring 3, a plurality of balls 4 as rolling elements interposed between the inner shaft 2 and the outer ring 3, a cage 5 for holding these balls 4 equally in the circumferential direction, the inner shaft 2 and the outer ring And a seal member 6 that seals the annular gap between the two.
The outer ring 3 is a fixed wheel fixed to the vehicle side, and an attachment flange T for attachment to a vehicle suspension is formed on the outer peripheral surface. Further, first and second outer ring raceways 3a and 3b on which the balls 4 roll are formed on the inner peripheral surface thereof.

内軸２は、前記車輪が取り付けられる車軸であるとともに、当該車輪用転がり軸受装置１の回転輪を構成している。この内軸２の一端部には、複数のハブボルト７ａが固定され車輪が取り付けられるフランジ部７が形成されている。また、内軸２の外周面には、第１の外輪軌道に対向する第１の内輪軌道２ａが形成されている。内軸２の他端部には、内軸２の外周面より小径の小径部８が形成されており、この小径部８には、第２の外輪軌道３ｂに対向する第２の内輪軌道２ｂが外周面に形成された円環状の内輪部材９が外嵌されている。   The inner shaft 2 is an axle to which the wheel is attached and constitutes a rotating wheel of the wheel rolling bearing device 1. A flange portion 7 to which a plurality of hub bolts 7a are fixed and wheels are attached is formed at one end portion of the inner shaft 2. Further, a first inner ring raceway 2 a is formed on the outer peripheral surface of the inner shaft 2 so as to face the first outer ring raceway. A small-diameter portion 8 having a smaller diameter than the outer peripheral surface of the inner shaft 2 is formed at the other end portion of the inner shaft 2. The small-diameter portion 8 has a second inner ring raceway 2 b facing the second outer ring raceway 3 b. An annular inner ring member 9 is formed on the outer peripheral surface.

第１の内輪軌道２ａと、第１の外輪軌道３ａとの間、及び、第１の内輪軌道２ａよりも軸方向他端側に位置する第２の内輪軌道２ｂと、第２の外輪軌道３ｂとの間には、それぞれ上述の複数の玉４が転動自在に配置されており、これら玉４は、複列に配置されている。   A second inner ring raceway 2b and a second outer ring raceway 3b located between the first inner ring raceway 2a and the first outer ring raceway 3a and on the other end side in the axial direction of the first inner ring raceway 2a. The balls 4 are arranged so as to be freely rollable between them, and these balls 4 are arranged in double rows.

また、本実施形態の車輪用転がり軸受装置１は、内輪部材９の端面９ａに当接した状態で内軸２の他端面２ｃ側に固定された内輪固定部材１０を備えている。
この内輪固定部材１０は、当該内輪固定部材１０を締め込むための六角孔１１ａが形成された円盤部１１と、この円盤部１１から軸方向一端側に突設され外周面に雄ねじが形成された雄ねじ部１２とを有している。内軸２には、その他端面２ｃに開口し軸方向一端側に向かって延びる有底孔の内周面に雌ねじが設けられたねじ孔２ｄが形成されており、内輪固定部材１０は、雄ねじ部１２をこのねじ孔２ｄに螺合し締め込まれることで、内軸２の他端面２ｃ側に固定されている。 Further, the wheel rolling bearing device 1 of the present embodiment includes an inner ring fixing member 10 that is fixed to the other end surface 2 c side of the inner shaft 2 in a state of being in contact with the end surface 9 a of the inner ring member 9.
The inner ring fixing member 10 has a disk portion 11 in which a hexagonal hole 11a for tightening the inner ring fixing member 10 is formed, and an external thread is formed on the outer peripheral surface of the disk portion 11 so as to protrude from one end side in the axial direction. And a male threaded portion 12. The inner shaft 2 is formed with a screw hole 2d having a female screw provided on the inner peripheral surface of a bottomed hole that opens to the other end surface 2c and extends toward one end in the axial direction. 12 is screwed into the screw hole 2d and tightened to be fixed to the other end surface 2c side of the inner shaft 2.

また、内輪固定部材１０の円盤部１１は、その軸方向一端側の端面１１ｂが内輪部材９の端面９ａに当接した状態で固定されており、内輪部材９の軸方向他端側への移動を規制するとともに、当該内輪固定部材１０の締め込み量を調整することで当該車輪用転がり軸受装置１に必要な予圧（軸受隙間）を付与した状態で、内軸２に対する内輪部材９の軸方向位置を位置決めしている。   The disk portion 11 of the inner ring fixing member 10 is fixed in a state where the end surface 11b on one end side in the axial direction is in contact with the end surface 9a of the inner ring member 9, and the inner ring member 9 moves to the other end side in the axial direction. In the axial direction of the inner ring member 9 with respect to the inner shaft 2 in a state where a necessary preload (bearing gap) is applied to the wheel rolling bearing device 1 by adjusting the tightening amount of the inner ring fixing member 10. Positioning is in progress.

また、円盤部１１の外周面１１ｃには、内軸２の回転状態を検出し車輪の回転速度を把握するためのセンサＳが対向配置される円環状のパルサリング１３が外嵌されている。図３は、図１中、矢印Ａ方向に見たときのパルサリング１３の外観図である。
図３のように、パルサリング１３の外周面には、当該パルサリング１３の最外周面である基面１４ａと、この基面１４ａから径方向に凹むとともに周方向に等間隔で配列された複数の溝部１４ｂとを有している。これら基面１４ａ及び溝部１４ｂは、センサＳの検出面Ｓ１に対向して配置されて、検出面Ｓ１との間のエアギャップを変化させる多数の凹凸を構成するものであり、内軸２とともにパルサリング１３が一体回転し、基面１４ａ及び溝部１４ｂが検出面Ｓ１に順次対向したときに、前記エアギャップを変化させ、センサＳの検出結果（センサ出力）を変化させることができる。つまり、基面１４ａ及び溝部１４ｂは、センサＳが内軸２の回転状態を検出するための被検出部１４を構成している。 Further, an annular pulsar ring 13 on which a sensor S for detecting the rotation state of the inner shaft 2 and grasping the rotation speed of the wheel is opposed is fitted on the outer peripheral surface 11 c of the disk portion 11. FIG. 3 is an external view of the pulsar ring 13 when viewed in the direction of arrow A in FIG.
As shown in FIG. 3, on the outer peripheral surface of the pulsar ring 13, a base surface 14a that is the outermost peripheral surface of the pulsar ring 13 and a plurality of grooves that are recessed from the base surface 14a in the radial direction and are arranged at equal intervals in the circumferential direction. 14b. The base surface 14a and the groove 14b are arranged to face the detection surface S1 of the sensor S, and constitute a large number of irregularities that change the air gap between the sensor surface S1 and pulsar ring together with the inner shaft 2. 13 rotates integrally, and when the base surface 14a and the groove portion 14b sequentially face the detection surface S1, the air gap can be changed, and the detection result (sensor output) of the sensor S can be changed. That is, the base surface 14a and the groove portion 14b constitute a detected portion 14 for the sensor S to detect the rotation state of the inner shaft 2.

上記のように構成された車輪用転がり軸受装置１によれば、軸方向一端側に突設した雄ねじ部１２によって内軸２の他端面に固定された内輪固定部材１０の円盤部１１によって、内輪部材９の軸方向位置の移動を規制できるので、上記従来例のように、内軸２の他端面からナットを螺合するための雄ねじ等を突設する必要がない。このため、当該車輪用転がり軸受装置１の軸方向寸法を短くでき、コンパクト化を図ることができる。
また、内輪固定部材１０は、内軸２に設けられたねじ孔２ｄに対して、雄ねじ部１２を螺合することで固定されているので、内軸２に対する内輪部材９の軸方向位置の調整が容易かつ自在となる。このため、当該車輪用転がり軸受装置１に必要な予圧を正確に付与することが容易となる。 According to the wheel rolling bearing device 1 configured as described above, the inner ring is fixed by the disk portion 11 of the inner ring fixing member 10 fixed to the other end surface of the inner shaft 2 by the male screw portion 12 protruding from one end side in the axial direction. Since the movement of the position of the member 9 in the axial direction can be restricted, there is no need to project a male screw or the like for screwing a nut from the other end surface of the inner shaft 2 as in the conventional example. For this reason, the axial direction dimension of the said rolling bearing device 1 for wheels can be shortened, and compactization can be achieved.
Further, since the inner ring fixing member 10 is fixed by screwing the male screw portion 12 into the screw hole 2d provided in the inner shaft 2, the adjustment of the axial position of the inner ring member 9 with respect to the inner shaft 2 is adjusted. Is easy and free. For this reason, it becomes easy to accurately apply the necessary preload to the wheel rolling bearing device 1.

また、上記実施形態において、パルサリング１３を円盤部１１に外嵌したので、内輪部材９には、変形等は生じない。従って、パルサリング１３を取り付けることによっては、転がり軸受装置の予圧に変動は生じない。この結果、転がり軸受装置１に予圧を付与する際に、パルサリング１３を取り付けることによる予圧の変動を考慮する必要が無くなるので、車輪用転がり軸受装置１に必要な予圧を正確に付与することがより容易となる。   Moreover, in the said embodiment, since the pulsar ring 13 was externally fitted by the disc part 11, a deformation | transformation etc. do not arise in the inner ring member 9. FIG. Therefore, by attaching the pulsar ring 13, the preload of the rolling bearing device does not vary. As a result, when applying preload to the rolling bearing device 1, it is not necessary to consider fluctuations in preload due to the attachment of the pulsar ring 13, so that it is possible to accurately apply the necessary preload to the wheel rolling bearing device 1. It becomes easy.

なお、本発明のセンサ付き転がり軸受装置は、上記実施形態に限定されるものではない。上記実施形態では、複列のアンギュラ玉軸受を構成した場合を例示したが、例えば、複列の円錐ころ軸受によって構成された軸受装置に適用することもできる。
また、上記実施形態では、第１の内輪軌道２ａを内軸２の外周面に形成し、第２の内輪軌道２ｂを内輪部材９に形成した転がり軸受装置を例示したが、それぞれ内輪軌道が形成された２つの内輪を内軸に外嵌して構成される転がり軸受装置にも適用することができる。
また、上記実施形態では、内輪固定部材１０の円盤部１１にパルサリング１３を外嵌したが、例えば、図４に示すように、円盤部１１の外周面１１ｃに被検出部１５を形成してもよく、この場合、パルサリング１３を別部材として取り付ける必要が無くなり、部品点数を減らすことができ、低コスト化が可能となる。
また、上記実施形態では、基面１４ａ及び溝部１４ｂを配列した凹凸によって被検出部１４を構成したが、Ｎ極とＳ極を交互に着磁、配列することで被検出部１４を構成してもよい。 In addition, the rolling bearing device with a sensor of this invention is not limited to the said embodiment. Although the case where the double row angular ball bearing was comprised was illustrated in the said embodiment, it can also apply to the bearing apparatus comprised by the double row tapered roller bearing, for example.
Moreover, in the said embodiment, although the 1st inner ring track 2a was formed in the outer peripheral surface of the inner shaft 2, and the rolling bearing apparatus which formed the 2nd inner ring track 2b in the inner ring member 9 was illustrated, each inner ring track is formed. The present invention can also be applied to a rolling bearing device that is configured by fitting two inner rings that are externally fitted to an inner shaft.
Moreover, in the said embodiment, although the pulsar ring 13 was externally fitted to the disk part 11 of the inner ring | wheel fixing member 10, for example, even if the to-be-detected part 15 is formed in the outer peripheral surface 11c of the disk part 11, as shown in FIG. In this case, it is not necessary to attach the pulsar ring 13 as a separate member, the number of parts can be reduced, and the cost can be reduced.
Moreover, in the said embodiment, although the to-be-detected part 14 was comprised by the unevenness | corrugation which arranged the base surface 14a and the groove part 14b, the to-be-detected part 14 was comprised by magnetizing and arranging N pole and S pole alternately. Also good.

本発明の一実施形態である車輪用転がり軸受装置の構成を示す断面図である。It is sectional drawing which shows the structure of the rolling bearing apparatus for wheels which is one Embodiment of this invention. 図１中の車輪用転がり軸受装置の一部欠截斜視図である。It is a partially broken perspective view of the rolling bearing device for wheels in FIG. 図１中、矢印Ａ方向に見たときのパルサリングの外観図である。FIG. 2 is an external view of pulsar ring when viewed in the direction of arrow A in FIG. 1. 内輪部材の他の実施形態を示す要部断面図である。It is principal part sectional drawing which shows other embodiment of an inner ring member.

符号の説明Explanation of symbols

１ 車輪用転がり軸受装置
２ 内軸
２ｂ 第２の内輪軌道
２ｃ 他端面
２ｄ ねじ孔
３ 外輪
４ 玉（転動体）
９ 内輪部材
９ａ 端面
１０ 内輪固定部材
１１ 円盤部
１２ 雄ねじ部
１３ パルサリング
１４，１５ 被検出部
Ｓ センサ DESCRIPTION OF SYMBOLS 1 Rolling bearing apparatus for wheels 2 Inner shaft 2b 2nd inner ring raceway 2c Other end surface 2d Screw hole 3 Outer ring 4 Ball (rolling element)
DESCRIPTION OF SYMBOLS 9 Inner ring member 9a End surface 10 Inner ring fixing member 11 Disk part 12 Male thread part 13 Pulsar ring 14,15 Detected part S Sensor

Claims (3)

一端部に車輪が取り付けられるフランジが形成された内軸と、
複列の転動体を介在して前記内軸の外周側に同心に配置された外輪と、
前記複列の転動体の内、他端側に位置する列の転動体の軌道が外周に形成されるとともに前記内軸の他端部に外嵌された内輪部材と、
前記内輪部材の端面に当接し当該内輪部材の軸方向他端側への移動を規制する円盤部、及びこの円盤部から軸方向一端側に突設された雄ねじ部を有し、この雄ねじ部を、前記内軸の他端面に開口し軸心と同心で軸方向一端側に向かって延びるねじ孔に螺合することで前記内軸に固定されている内輪固定部材と、を備えたことを特徴とする車輪用転がり軸受装置。 An inner shaft formed with a flange to which a wheel is attached at one end;
An outer ring disposed concentrically on the outer peripheral side of the inner shaft via double row rolling elements;
An inner ring member that is formed on the outer periphery of the row of rolling elements located on the other end side of the double row rolling elements and is fitted on the other end of the inner shaft,
A disk portion that contacts the end surface of the inner ring member and restricts movement of the inner ring member toward the other end side in the axial direction; and a male screw portion projecting from the disk portion toward the one end side in the axial direction. An inner ring fixing member that is fixed to the inner shaft by being screwed into a screw hole that is concentric with the shaft and extends toward one end in the axial direction. Rolling bearing device for wheels. 前記円盤部には、前記内軸の回転状態を検出するセンサが対向配置される被検出部を有するパルサリングが外嵌されている請求項１に記載の車輪用転がり軸受装置。   2. The wheel rolling bearing device according to claim 1, wherein a pulsar ring having a detected portion on which a sensor for detecting a rotation state of the inner shaft is opposed is externally fitted to the disk portion. 前記円盤部の外周端面には、前記内軸の回転状態を検出するセンサが対向配置される被検出部が形成されている請求項１に記載の車輪用転がり軸受装置。   2. The wheel rolling bearing device according to claim 1, wherein a detected portion is formed on an outer peripheral end face of the disk portion, and a detected portion is disposed to face a sensor that detects a rotation state of the inner shaft.
JP2006323010A 2006-11-30 2006-11-30 Roller bearing unit for wheel Pending JP2008138699A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011073125A (en) * 2009-10-02 2011-04-14 Murata Machinery Ltd Turret device of machine tool
JP2014190181A (en) * 2013-03-26 2014-10-06 Yanmar Co Ltd Electronic hydraulic governor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011073125A (en) * 2009-10-02 2011-04-14 Murata Machinery Ltd Turret device of machine tool
JP2014190181A (en) * 2013-03-26 2014-10-06 Yanmar Co Ltd Electronic hydraulic governor

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