JP3674752B2 - Axle bearing apparatus - Google Patents

Axle bearing apparatus Download PDF

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Publication number
JP3674752B2
JP3674752B2 JP5135699A JP5135699A JP3674752B2 JP 3674752 B2 JP3674752 B2 JP 3674752B2 JP 5135699 A JP5135699 A JP 5135699A JP 5135699 A JP5135699 A JP 5135699A JP 3674752 B2 JP3674752 B2 JP 3674752B2
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Japan
Prior art keywords
flange
ring
fixed
outer ring
fitted
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.)
Expired - Fee Related
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JP5135699A
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Japanese (ja)
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JP2000211311A (en
Inventor
基司 河村
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Koyo Seiko Co Ltd
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Koyo Seiko Co Ltd
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Priority to JP5135699A priority Critical patent/JP3674752B2/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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • 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
    • F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
    • F16C41/007—Encoders, e.g. parts with a plurality of alternating magnetic poles
    • 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
    • F16C19/185—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 two raceways provided integrally on a part other than a race ring, e.g. a shaft or housing
    • 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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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)

Description

【０００１】
【発明の属する技術分野】
この発明は、例えば自動車の車輪の回転速度をセンサ部により検出する車軸用軸受装置に関する。
【０００２】
【従来の技術】
従来、車輪回転速度検出部を備えた車軸用軸受装置として、車輪側に固定された外輪と、外輪に同心的にかつ車体側に固定された内輪と、内外輪間に転動可能に配置されかつ保持器にて円周上に保持された転動体と、外輪の端部外周面に圧入固定されたパルサリングと、車体側に取り付けられパルサリングと対向して回転速度を検出するセンサ部とを有する構造のものが知られている。
【０００３】
【発明が解決しようとする課題】
しかしながら、上記従来の車軸用軸受装置においては、パルサリングが固定された外輪を有する軸受が組み込まれた後、車体側にセンサ部が別に取り付けられるため、どうしてもパルサリングとセンサ部とのギャップが大きくなりやすく、またこのギャップ調整が面倒であった。さらに、パルサリングとセンサ部の検出部が露出しているため、鉄粉が付着しやすく、検出性能が低下しやすいという問題があった。
【０００４】
そこで、この発明の目的は、軸受組み込み後のパルサ部とセンサ部とのギャップ調整が不要で、しかも検出部に鉄粉の付着がない車軸用軸受装置を提供することにある。
【０００５】
【課題を解決するための手段】
上記課題を解決するための手段として、請求項１の発明においては、車輪側に固定された外輪と、外輪に同心的にかつ車体側に固定された内輪と、内外輪間に転動可能に配置されかつ保持器にて円周上に保持された転動体と、外輪回転速度を検出する回転速度検出部とを有する車軸用軸受装置において、上記外輪端面に接触する第一半径方向外方フランジと上記外輪の端部内周面に嵌合される第一筒体とからなる第一環体を上記外輪に嵌合固定し、軸受外部側に形成した第二半径方向外方フランジと上記内輪の端部外周面に嵌合される第二筒体とからなる第二環体を上記内輪に嵌合固定し、上記第一フランジと上記第二フランジ間にシール体を配設して密封部を形成し、上記第一筒体内周面にパルサ部を設けるとともに、上記第二フランジに上記パルサ部に対向し回転速度を検出するセンサ部を設けたことを特徴とする。
【０００６】
また、請求項２の発明においては、車輪側に固定された外輪と、外輪に同心的にかつ車体側に固定された内輪と、内外輪間に転動可能に配置されかつ保持器にて円周上に保持された転動体と、外輪回転速度を検出する回転速度検出部とを有する車軸用軸受装置において、上記外輪端面に接触する第一半径方向外方フランジと上記外輪の端部内周面に嵌合される第一筒体とからなる第一環体を上記外輪に嵌合固定し、軸受外部側に形成した第二半径方向外方フランジと上記内輪の端部外周面に嵌合される第二筒体とからなる第二環体を上記内輪に嵌合固定し、上記第一フランジと上記第二フランジ間にシール体を配設して密封部を形成し、上記第一筒体の軸受内部側に第三半径方向内方フランジを形成し、この第三フランジの軸受外部側の側面にパルサ部を設けるとともに、上記第二フランジに上記パルサ部に対向し回転速度を検出するセンサ部を設けたことを特徴とする。
【０００７】
【発明の実施の形態】
本発明の詳細を図面に示す実施形態に基づいて説明する。図１および図２の車軸用軸受装置は、車輪側に固定された外輪１と、外輪１に同心的にかつ車体側に固定された内輪２と、内外輪２，１間に転動可能に配置されかつ保持器３にて円周上に保持された転動体４とを基本的に有している。そして、第一筒体６と一端から半径方向外方に延びる第一フランジ７とからなる第一環体５が、上記第一筒体６の外輪１の端部内周面への圧入嵌合により外輪１に固定されている。このとき、第一フランジ７は外輪１端面１ａに接触している。また、第二筒体９と一端から半径方向外方に延びる第二フランジ１０とからなる第二環体８が、第二フランジ１０を軸受外部側に位置するように、上記第二筒体９の内輪２の端部外周面への圧入嵌合により内輪２に固定されている。
【０００８】
さらに、第一フランジ７の先端部にシール体１１が固定され、このシール体１１の内周リップ１１ａが第二フランジ１０の先端部に形成した断面Ｌ形の第三環体１２の内周面に接触させられ、内外輪２，１間が密封されている。
【０００９】
そして、第一筒体６の内周面にはパルサ部１３が設けられ、第二フランジ１０の軸受内部側の側面には上記パルサ部１３に対向し回転速度を検出する検出部を備えたセンサ部１４が設けられている。このセンサ部１４からはハーネス１５が接続されている。また、上記パルサ部１３は、円周上に等間隔にて形成した複数の突条部にて形成してもよいし、あるいは、Ｎ極とＳ極とを交互に等間隔にて磁極化した部材を固定して形成してもよく、さらにはその他の公知の手段であってもよく、要するに上記センサ部１４と協同して回転速度が検出される構成とされればよいものである。
【００１０】
次に、図３は別の実施形態であり、パルサ部１３の位置が図１の実施形態と相違している。すなわち、図３においては、第一筒体６の軸受内部側の端部から半径方向内方に第三フランジ１６を形成し、この第三フランジ１６の軸受外側の側面に上記パルサ部１３が設けられ、このパルサ部１３に対向し回転速度を検出する検出部を備えたセンサ部１４が第二フランジ１０の軸受内部側の側面に設けられたものである。
【００１１】
上記各実施形態ともに、パルサ部１３とセンサ部１４とはシール体１１で密封された軸受内部側に位置しており、外部の鉄粉、塵埃、泥水等が付着しないようにされている。また、図１の実施形態では、パルサ部１３とセンサ部１４の検出部とを半径方向に対向させているため、パルサ部１３とセンサ部１４の検出部とのギャップ調整が容易となる。さらに、図３の実施形態では、パルサ部１３とセンサ部１４の検出部とを軸方向に対向させているため、上記ギャップが検出部の円周方向全長に亘って一定としやすい。
【００１２】
【発明の効果】
以上詳述したように、本発明の車軸用軸受装置によれば、軸受内にギャップ調整されたセンサ部およびパルサ部を組み込んだユニットとしたため、軸受組み込み後のギャップ調整が不要となり、軸受組み込みが容易となる。また、センサ部がシール体で密封されているため、鉄粉等の付着がなく検出性能の低下が防止される。
【図面の簡単な説明】
【図１】この発明の一実施形態の断面図である。
【図２】図１の要部拡大図である。
【図３】この発明の別の実施形態の断面図である。
【符号の説明】
１ 外輪
２ 内輪
３ 保持器
４ 転動体
５ 第一環体
６ 第一筒体
７ 第一フランジ
８ 第二環体
９ 第二筒体
１０ 第二フランジ
１１ シール体
１２ 第三環体
１３ パルサ部
１４ センサ部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an axle bearing device that detects, for example, a rotational speed of a wheel of an automobile by a sensor unit.
[0002]
[Prior art]
Conventionally, as an axle bearing device equipped with a wheel rotation speed detection unit, an outer ring fixed to the wheel side, an inner ring concentrically fixed to the outer ring and fixed to the vehicle body side, and arranged between the inner and outer rings are capable of rolling. And a rolling element held on the circumference by a cage, a pulsar ring press-fitted and fixed to the outer peripheral surface of the end portion of the outer ring, and a sensor portion that is attached to the vehicle body side and detects the rotational speed facing the pulsar ring. Structures are known.
[0003]
[Problems to be solved by the invention]
However, in the above conventional axle bearing device, since a sensor unit is separately attached to the vehicle body after a bearing having an outer ring to which a pulsar ring is fixed is incorporated, the gap between the pulsar ring and the sensor unit tends to increase. Also, this gap adjustment was troublesome. Furthermore, since the pulsar ring and the detection part of the sensor part are exposed, there is a problem that iron powder tends to adhere and the detection performance tends to deteriorate.
[0004]
Accordingly, an object of the present invention is to provide an axle bearing device that does not require adjustment of the gap between the pulsar part and the sensor part after the bearing is incorporated, and in which no iron powder adheres to the detection part.
[0005]
[Means for Solving the Problems]
As means for solving the above-mentioned problems, in the invention of claim 1, the outer ring fixed to the wheel side, the inner ring concentric to the outer ring and fixed to the vehicle body side, and the inner ring and the outer ring can be rolled. A first radial outer flange in contact with the end face of the outer ring in a bearing device for an axle having a rolling element that is arranged and held on a circumference by a cage, and a rotational speed detector that detects an outer ring rotational speed And a first cylindrical body fitted to the inner peripheral surface of the end portion of the outer ring is fitted and fixed to the outer ring, and a second radially outer flange formed on the bearing outer side and the inner ring A second ring consisting of a second cylinder fitted to the outer peripheral surface of the end is fitted and fixed to the inner ring, and a sealing body is disposed between the first flange and the second flange to provide a sealing portion. Forming a pulsar portion on the peripheral surface of the first cylinder, and Characterized in that a sensor unit which faces the serial pulser unit detects the rotational speed.
[0006]
In the invention of claim 2, the outer ring fixed to the wheel side, the inner ring concentric to the outer ring and fixed to the vehicle body side, and arranged to roll between the inner and outer rings and to be circular by the cage In a bearing device for an axle having a rolling element held on the circumference and a rotation speed detection unit for detecting an outer ring rotation speed, a first radial outer flange contacting the outer ring end surface and an inner peripheral surface of an end of the outer ring A first body composed of a first cylinder fitted to the outer ring is fitted and fixed to the outer ring, and is fitted to a second radial outer flange formed on the bearing outer side and the outer peripheral surface of the end of the inner ring. A second annular body comprising a second cylindrical body is fitted and fixed to the inner ring, a sealing body is disposed between the first flange and the second flange to form a sealing portion, and the first cylindrical body A third radially inward flange is formed on the inner side of the bearing, and the side surface of the third flange on the outer side of the bearing Provided with a pulser portion, characterized in that a sensor which detects the rotation speed to face the pulser unit to said second flange.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The details of the present invention will be described based on embodiments shown in the drawings. The axle bearing device of FIGS. 1 and 2 can roll between an outer ring 1 fixed to the wheel side, an inner ring 2 concentric to the outer ring 1 and fixed to the vehicle body side, and the inner and outer rings 2 and 1. It basically has a rolling element 4 which is arranged and held on the circumference by a cage 3. And the 1st body 5 which consists of the 1st cylinder 6 and the 1st flange 7 extended in the radial direction outward from one end is press-fitted by the end fitting inner peripheral surface of the outer ring | wheel 1 of the said 1st cylinder 6 It is fixed to the outer ring 1. At this time, the first flange 7 is in contact with the outer ring 1 end face 1a. Further, the second cylindrical body 9 is configured such that the second annular body 8 including the second cylindrical body 9 and the second flange 10 extending radially outward from one end is positioned on the outer side of the bearing. The inner ring 2 is fixed to the inner ring 2 by press-fitting to the outer peripheral surface of the end.
[0008]
Further, the seal body 11 is fixed to the front end portion of the first flange 7, and the inner peripheral surface of the L-shaped third ring 12 having an L-shaped cross section formed on the front end portion of the second flange 10 by the inner peripheral lip 11 a of the seal body 11. The inner and outer rings 2 and 1 are sealed.
[0009]
A pulsar portion 13 is provided on the inner peripheral surface of the first cylindrical body 6, and a sensor provided with a detection portion that detects the rotational speed on the side surface on the bearing inner side of the second flange 10 that faces the pulsar portion 13. A portion 14 is provided. A harness 15 is connected from the sensor unit 14. Further, the pulsar section 13 may be formed by a plurality of protrusions formed at equal intervals on the circumference, or alternatively, the N pole and the S pole are alternately formed at equal intervals. The member may be formed in a fixed manner, and may be other known means. In short, it is sufficient that the rotation speed is detected in cooperation with the sensor unit 14.
[0010]
Next, FIG. 3 shows another embodiment, and the position of the pulsar unit 13 is different from the embodiment of FIG. That is, in FIG. 3, the third flange 16 is formed radially inward from the end on the bearing inner side of the first cylindrical body 6, and the pulsar portion 13 is provided on the side surface outside the bearing of the third flange 16. The sensor portion 14 provided with a detection portion that faces the pulsar portion 13 and detects the rotational speed is provided on the side surface on the bearing inner side of the second flange 10.
[0011]
In each of the embodiments described above, the pulsar unit 13 and the sensor unit 14 are located on the bearing inner side sealed by the seal body 11 so that external iron powder, dust, muddy water, and the like are not attached. In the embodiment of FIG. 1, since the pulsar unit 13 and the detection unit of the sensor unit 14 are opposed to each other in the radial direction, the gap adjustment between the pulsar unit 13 and the detection unit of the sensor unit 14 is easy. Furthermore, in the embodiment of FIG. 3, since the pulser unit 13 and the detection unit of the sensor unit 14 are opposed to each other in the axial direction, the gap is likely to be constant over the entire circumferential length of the detection unit.
[0012]
【The invention's effect】
As described above in detail, according to the axle bearing device of the present invention, since the sensor unit and the pulsar unit in which the gap is adjusted are incorporated in the bearing, it is not necessary to adjust the gap after the bearing is incorporated, It becomes easy. Moreover, since the sensor part is sealed with the sealing body, there is no adhesion of iron powder or the like, and the deterioration of the detection performance is prevented.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an embodiment of the present invention.
FIG. 2 is an enlarged view of a main part of FIG.
FIG. 3 is a cross-sectional view of another embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Outer ring 2 Inner ring 3 Cage 4 Rolling body 5 First union body 6 First cylinder 7 First flange 8 Second ring 9 Second cylinder 10 Second flange 11 Seal body 12 Third ring 13 Pulsar part 14 Sensor part

Claims (2)

車輪側に固定された外輪と、外輪に同心的にかつ車体側に固定された内輪と、内外輪間に転動可能に配置されかつ保持器にて円周上に保持された転動体と、外輪回転速度を検出する回転速度検出部とを有する車軸用軸受装置において、上記外輪端面に接触する第一半径方向外方フランジと上記外輪の端部内周面に嵌合される第一筒体とからなる第一環体を上記外輪に嵌合固定し、軸受外部側に形成した第二半径方向外方フランジと上記内輪の端部外周面に嵌合される第二筒体とからなる第二環体を上記内輪に嵌合固定し、上記第一フランジと上記第二フランジ間にシール体を配設して密封部を形成し、上記第一筒体内周面にパルサ部を設けるとともに、上記第二フランジに上記パルサ部に対向し回転速度を検出するセンサ部を設けたことを特徴とする車軸用軸受装置。An outer ring fixed to the wheel side, an inner ring concentrically fixed to the outer ring and fixed to the vehicle body side, a rolling element disposed so as to be able to roll between the inner and outer rings and held on a circumference by a cage, In the axle bearing device having a rotation speed detection unit for detecting the rotation speed of the outer ring, a first radial outer flange that comes into contact with the outer ring end face, and a first cylindrical body that is fitted to the inner peripheral surface of the end of the outer ring, A second body comprising a second radial outer flange formed on the outer side of the bearing and a second cylindrical body fitted to the outer peripheral surface of the end portion of the inner ring. A ring body is fitted and fixed to the inner ring, a sealing body is disposed between the first flange and the second flange to form a sealing portion, a pulsar portion is provided on the peripheral surface of the first cylinder, and The second flange is provided with a sensor section that detects the rotational speed and faces the pulsar section. Axle bearing apparatus to be. 車輪側に固定された外輪と、外輪に同心的にかつ車体側に固定された内輪と、内外輪間に転動可能に配置されかつ保持器にて円周上に保持された転動体と、外輪回転速度を検出する回転速度検出部とを有する車軸用軸受装置において、上記外輪端面に接触する第一半径方向外方フランジと上記外輪の端部内周面に嵌合される第一筒体とからなる第一環体を上記外輪に嵌合固定し、軸受外部側に形成した第二半径方向外方フランジと上記内輪の端部外周面に嵌合される第二筒体とからなる第二環体を上記内輪に嵌合固定し、上記第一フランジと上記第二フランジ間にシール体を配設して密封部を形成し、上記第一筒体の軸受内部側に第三半径方向内方フランジを形成し、この第三フランジの軸受外部側の側面にパルサ部を設けるとともに、上記第二フランジに上記パルサ部に対向し回転速度を検出するセンサ部を設けたことを特徴とする車軸用軸受装置。An outer ring fixed to the wheel side, an inner ring concentrically fixed to the outer ring and fixed to the vehicle body side, a rolling element disposed so as to be able to roll between the inner and outer rings and held on a circumference by a cage, In the axle bearing device having a rotation speed detection unit for detecting the rotation speed of the outer ring, a first radial outer flange that comes into contact with the outer ring end face, and a first cylindrical body that is fitted to the inner peripheral surface of the end of the outer ring, A second body comprising a second radial outer flange formed on the outer side of the bearing and a second cylindrical body fitted to the outer peripheral surface of the end portion of the inner ring. A ring body is fitted and fixed to the inner ring, and a sealing body is formed between the first flange and the second flange to form a sealing portion. A side flange is formed and a pulsar is provided on the side surface of the third flange outside the bearing. Axle bearing apparatus characterized in that a sensor unit for detecting the to face the pulser unit to the two flanges rotational speed.
JP5135699A 1999-01-21 1999-01-21 Axle bearing apparatus Expired - Fee Related JP3674752B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5135699A JP3674752B2 (en) 1999-01-21 1999-01-21 Axle bearing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5135699A JP3674752B2 (en) 1999-01-21 1999-01-21 Axle bearing apparatus

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JP2000211311A JP2000211311A (en) 2000-08-02
JP3674752B2 true JP3674752B2 (en) 2005-07-20

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4244631B2 (en) 2002-12-20 2009-03-25 株式会社ジェイテクト Rolling bearing device
US6994472B2 (en) 2002-12-24 2006-02-07 Koyo Seiko Co., Ltd. Rolling bearing apparatus
JP2006105341A (en) * 2004-10-08 2006-04-20 Ntn Corp Bearing for wheel integrated with speed sensor exclusively used for motorcycle
JP5327368B2 (en) * 2012-08-06 2013-10-30 日本精工株式会社 Rotational speed detection device for motorcycle wheels

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