JP2001021576A - Wheel speed detecting device - Google Patents

Wheel speed detecting device

Info

Publication number
JP2001021576A
JP2001021576A JP11194498A JP19449899A JP2001021576A JP 2001021576 A JP2001021576 A JP 2001021576A JP 11194498 A JP11194498 A JP 11194498A JP 19449899 A JP19449899 A JP 19449899A JP 2001021576 A JP2001021576 A JP 2001021576A
Authority
JP
Japan
Prior art keywords
wheel speed
magnetic sensor
ring
detecting device
speed detecting
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.)
Granted
Application number
JP11194498A
Other languages
Japanese (ja)
Other versions
JP4141592B2 (en
Inventor
Minoru Chitoku
稔 千徳
Kazuhisa Toda
一寿 戸田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koyo Seiko Co Ltd
Original Assignee
Koyo Seiko Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koyo Seiko Co Ltd filed Critical Koyo Seiko Co Ltd
Priority to JP19449899A priority Critical patent/JP4141592B2/en
Publication of JP2001021576A publication Critical patent/JP2001021576A/en
Application granted granted Critical
Publication of JP4141592B2 publication Critical patent/JP4141592B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Regulating Braking Force (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a wheel speed detecting device that allows a structure including wheels to be easily miniaturized because of a high degree of freedom of layout and a high degree of freedom in terms of structure. SOLUTION: The wheel speed detecting device has a magnetism sensor 5 with a detecting part 7 whose detecting surface 7A is at approximately right angles to the surface 3A to be detected of a magnetizing ring 3, and a signal processing part 8 and a wire 10 extend radially outwardly from the detecting part 7. Thus, the axial space needed for the wheel speed detecting device can be reduced, and a structure suited for taking out the wire 10 of the magnetism sensor 5 radially outwards is obtained.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】この発明は、着磁リングと磁
気センサとで車輪の回転速度を検出する車輪速検出装置
に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wheel speed detecting device for detecting the rotational speed of a wheel using a magnetized ring and a magnetic sensor.

【0002】[0002]

【従来の技術】従来、この種の車輪速検出装置として
は、図3(A)に示すものがある。この車輪速検出装置
は、軸受の回転側内輪101の端部外周面101Aに固
定された着磁リング102と、この着磁リング102に
対向する磁気センサ103とを備えている。この着磁リ
ング102は、図3(B)に示すように、周方向にN極1
06とS極107が交互に配列されたリング状磁性体か
らなる。上記磁気センサ103は、外輪105の端部内
周面105Aに固定されていて、磁気センサ103の検
出面103Aは着磁リング102の被検出面102Aの
正面に対向している。
2. Description of the Related Art Conventionally, as this kind of wheel speed detecting device, there is one shown in FIG. The wheel speed detecting device includes a magnetized ring 102 fixed to an outer peripheral surface 101A of an end portion of a rotating inner ring 101 of a bearing, and a magnetic sensor 103 facing the magnetized ring 102. As shown in FIG. 3B, the magnetized ring 102 has an N pole 1 in the circumferential direction.
06 and the S pole 107 are formed of a ring-shaped magnetic material alternately arranged. The magnetic sensor 103 is fixed to the inner peripheral surface 105A of the end of the outer ring 105, and the detection surface 103A of the magnetic sensor 103 faces the front of the detected surface 102A of the magnetized ring 102.

【0003】この車輪速検出装置は、着磁リング102
が内輪101と一体に回転することで発生する磁界の周
期変化を、上記磁気センサ103で検出して、着磁リン
グ102の回転速度つまり内輪101の回転速度を検出
する。
[0003] The wheel speed detecting device comprises a magnetized ring 102.
The rotation of the magnetized ring 102, that is, the rotation speed of the inner ring 101, is detected by the magnetic sensor 103 detecting a change in the period of the magnetic field generated by the rotation of the inner ring 101 integrally with the inner ring 101.

【0004】[0004]

【発明が解決しようとする課題】ところで、上記従来の
車輪速検出装置のように、着磁リング102の被検出面
102Aの正面に磁気センサ103の検出面103Aを
対向させる配置では、構造上の自由度が小さくなるとい
う問題がある。すなわち、着磁リング102と磁気セン
サ103の配置の自由度が小さいために、構造上の自由
度が小さく、車輪を含めた構造の小型化を行う上で障害
となっていた。たとえば、ワイヤハーネス108が車体
に干渉する等の問題があった。
By the way, as in the above-described conventional wheel speed detecting device, the arrangement in which the detection surface 103A of the magnetic sensor 103 is opposed to the front surface of the detection surface 102A of the magnetized ring 102 has a structural disadvantage. There is a problem that the degree of freedom is reduced. That is, since the degree of freedom in the arrangement of the magnetizing ring 102 and the magnetic sensor 103 is small, the degree of freedom in the structure is small, and this is an obstacle to downsizing the structure including the wheels. For example, there is a problem that the wire harness 108 interferes with the vehicle body.

【0005】そこで、この発明の目的は、配置の自由度
が大きく、構造上の自由度が大きくて、車輪を含めた構
造を小型化し易い車輪速検出装置を提供することにあ
る。
SUMMARY OF THE INVENTION An object of the present invention is to provide a wheel speed detecting device which has a large degree of freedom in arrangement and a large degree of structural freedom, and can easily reduce the size of a structure including wheels.

【0006】[0006]

【課題を解決するための手段】上記目的を達成するた
め、請求項1の発明の車輪速検出装置は、N極とS極が
周方向に交互に配列された着磁リングの回転による磁界
変化を磁気センサで検出して上記回転の速度を検出する
車輪速検出装置において、上記着磁リングの被検出面の
各法線が、上記磁気センサの検出面の各法線に一致して
いないことを特徴としている。
According to a first aspect of the present invention, there is provided a wheel speed detecting apparatus, wherein a magnetic field change caused by rotation of a magnetizing ring in which N poles and S poles are alternately arranged in a circumferential direction. In the wheel speed detecting device for detecting the rotation speed by detecting the rotation speed with a magnetic sensor, each normal of the detected surface of the magnetized ring does not match each normal of the detection surface of the magnetic sensor It is characterized by.

【0007】この請求項1の発明は、上記着磁リングの
被検出面の各法線が、上記磁気センサの検出面の各法線
に一致していない。つまり、着磁リングの被検出面の正
面に磁気センサの検出面が対向しているのではなく、着
磁リングの被検出面と磁気センサの検出面が非対向もし
くは斜め対向になっている。本発明者らは、このような
斜め対向配置や非対向配置であっても、着磁リングの回
転による磁界変動を磁気センサで検出可能なことを実験
的に確認した。
According to the first aspect of the present invention, each normal of the surface to be detected of the magnetized ring does not coincide with each normal of the detection surface of the magnetic sensor. That is, the detection surface of the magnetic sensor does not face the front surface of the detection surface of the magnetized ring, but the detection surface of the magnetic ring and the detection surface of the magnetic sensor are non-facing or obliquely facing. The present inventors have experimentally confirmed that a magnetic sensor can detect a magnetic field fluctuation due to the rotation of the magnetized ring even in such an obliquely facing arrangement or a non-facing arrangement.

【0008】そして、このような斜め対向配置や非対向
配置が可能になることによって、車輪を含めた構造の自
由度を向上でき、磁気センサのワイヤハーネスが車体へ
干渉することを回避でき、小型化を促進できる。
[0008] By allowing such obliquely opposed arrangement or non-opposed arrangement, the degree of freedom of the structure including the wheels can be improved, the interference of the wire harness of the magnetic sensor with the vehicle body can be avoided, and the compactness can be achieved. Can be promoted.

【0009】また、請求項2の発明の車輪速検出装置
は、請求項1に記載の車輪速検出装置において、上記着
磁リングの被検出面の各法線と上記磁気センサの検出面
の各法線とが略平行になっていることを特徴としてい
る。
According to a second aspect of the present invention, there is provided the wheel speed detecting device according to the first aspect, wherein each normal of the surface to be detected of the magnetized ring and each of the normals of the detecting surface of the magnetic sensor is provided. It is characterized in that the normal line is substantially parallel to the normal line.

【0010】この請求項2の発明は、着磁リングの被検
出面の各法線が、磁気センサの検出面の各法線に一致し
ておらず、かつ、着磁リングの被検出面の各法線と上記
磁気センサの検出面の各法線とが略平行になっている。
つまり、着磁リングの被検出面と、磁気センサの検出面
とが略平行になっているが、上記被検出面と検出面とが
非対向になるまで位置ずれしている。このような非対向
位置ずれ配置によれば、被検出面および検出面の法線方
向への配置スペースを小さくできるので、上記法線方向
への配置スペースが小さな車輪周り構造に対応でき、小
型化に対応することができる。
According to the invention of claim 2, each normal of the surface to be detected of the magnetized ring does not coincide with each normal of the surface to be detected of the magnetic sensor, and Each normal and each normal of the detection surface of the magnetic sensor are substantially parallel.
In other words, the detection surface of the magnetizing ring and the detection surface of the magnetic sensor are substantially parallel, but are displaced until the detection surface does not face the detection surface. According to such a non-facing positional displacement arrangement, the arrangement space in the normal direction of the detected surface and the detection surface can be reduced, so that the arrangement space in the normal direction can be adapted to a small wheel surrounding structure, and the size is reduced. Can be handled.

【0011】また、請求項3の発明は、請求項1に記載
の車輪速検出装置において、上記着磁リングの被検出面
と上記磁気センサの検出面とが挟む角度が、90゜以下
であることを特徴としている。
According to a third aspect of the present invention, in the wheel speed detecting device according to the first aspect, an angle between the detected surface of the magnetized ring and the detection surface of the magnetic sensor is 90 ° or less. It is characterized by:

【0012】この請求項3の発明は、上記着磁リングの
被検出面と上記磁気センサの検出面とが挟む角度が、9
0゜以下である。つまり、この発明では、着磁リングの
被検出面と磁気センサの検出面とが、斜めに対向してい
る。このような斜め対向配置によれば、たとえば、磁気
センサのワイヤハーネスの取り出し方向の自由度を大き
くすることができ、ワイヤハーネスが車両本体へ干渉す
る等の問題を回避できる。また、所望の傾斜角度に設定
することによって、車輪速検出装置の占有スペースを調
節でき、車輪を含めた構造を小型化し易くなる。
According to a third aspect of the present invention, the angle between the detection surface of the magnetized ring and the detection surface of the magnetic sensor is 9 degrees.
0 ° or less. That is, in the present invention, the detection surface of the magnetized ring and the detection surface of the magnetic sensor are obliquely opposed. According to such a diagonally opposed arrangement, for example, the degree of freedom of the magnetic sensor in the direction in which the wire harness is taken out can be increased, and problems such as interference of the wire harness with the vehicle body can be avoided. Further, by setting the desired inclination angle, the space occupied by the wheel speed detecting device can be adjusted, and the structure including the wheels can be easily reduced in size.

【0013】[0013]

【発明の実施の形態】以下、この発明を図示の実施の形
態により詳細に説明する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.

【0014】〔第1の実施の形態〕図1に、この発明の
車輪速検出装置の第1実施形態を示す。この第1実施形
態は、外輪1が静止していて内輪2が回転する玉軸受に
装着されている。この第1実施形態は、着磁リング3と
磁気センサ5を備える。着磁リング3は、内輪2の軸方
向の端面2Aに固定された断面かぎ型のリング状金具6
の外周面6Aに固定されて、被検出面3Aが径方向外方
に向いている。この着磁リング3は、周方向にN極とS
極が交互に配列されたものである。
[First Embodiment] FIG. 1 shows a first embodiment of a wheel speed detecting device according to the present invention. The first embodiment is mounted on a ball bearing in which an outer ring 1 is stationary and an inner ring 2 rotates. The first embodiment includes a magnetizing ring 3 and a magnetic sensor 5. The magnetized ring 3 is a ring-shaped metal fitting 6 having a hook-shaped cross section fixed to the axial end surface 2A of the inner ring 2.
Is fixed to the outer peripheral surface 6A, and the detected surface 3A faces radially outward. This magnetized ring 3 has an N pole and an S pole in the circumferential direction.
The poles are arranged alternately.

【0015】また、磁気センサ5は、検出部7とこの検
出部7で検出した信号を処理する信号処理回路を内蔵し
た信号処理部8とこの信号処理部8から信号を取り出す
ワイヤ10からなる。この磁気センサ5は、検出部7の
検出面7Aが軸方向外側を向くように、外輪1の軸方向
端面1Aに固定されている。
The magnetic sensor 5 comprises a detection section 7, a signal processing section 8 having a signal processing circuit for processing a signal detected by the detection section 7, and a wire 10 for extracting a signal from the signal processing section 8. The magnetic sensor 5 is fixed to the axial end face 1A of the outer race 1 so that the detection surface 7A of the detection section 7 faces outward in the axial direction.

【0016】この第1実施形態によれば、静止している
外輪1に対して内輪2が回転することによって、内輪2
に固定された着磁リング3が回転し、この着磁リング3
の回転による磁界の周期変化を磁気センサ5の検出部7
で検出する。この検出部7は、検出磁界を電気信号に変
えて信号処理部8に送り、信号処理部8はさらなる信号
処理を行ってからワイヤ10に出力する。
According to the first embodiment, the rotation of the inner ring 2 with respect to the stationary outer ring 1 causes the inner ring 2 to rotate.
The magnetized ring 3 fixed to the shaft rotates.
The change of the period of the magnetic field due to the rotation of the
To detect. The detection unit 7 converts the detected magnetic field into an electric signal and sends the electric signal to the signal processing unit 8, and the signal processing unit 8 performs further signal processing and outputs the signal to the wire 10.

【0017】この第1実施形態では、着磁リング3の被
検出面3Aに対して磁気センサ5の検出部7の検出面7
Aが略直角になっていて、この検出部7から信号処理部
8とワイヤ10が径方向外方に延在している。したがっ
て、この実施形態によれば、車輪速検出装置のための軸
方向スペースを削減でき、かつ、磁気センサ5のワイヤ
10を径方向外方に取り出す場合に適した構造となる。
In the first embodiment, the detection surface 7A of the detection unit 7 of the magnetic sensor 5 is positioned relative to the detection surface 3A of the magnetized ring 3.
A is a substantially right angle, and the signal processing unit 8 and the wire 10 extend radially outward from the detection unit 7. Therefore, according to this embodiment, the axial space for the wheel speed detecting device can be reduced, and the structure is suitable when the wire 10 of the magnetic sensor 5 is taken out in the radial direction.

【0018】なお、この第1実施形態では、着磁リング
3の被検出面3Aに対して磁気センサ5の検出部7の検
出面7Aを略直角にしたが、断面略V字形の取り付け金
具を使用して、傾斜角度を60゜や45゜に設定しても
よい。この場合、磁気センサ5のワイヤ10を軸方向外
方斜めに取り出すことができる上に、着磁リング3から
の磁束を検出し易くなる。
In the first embodiment, the detection surface 7A of the detection unit 7 of the magnetic sensor 5 is substantially perpendicular to the detection surface 3A of the magnetized ring 3, but a mounting bracket having a substantially V-shaped cross section is used. The tilt angle may be set to 60 ° or 45 ° by using. In this case, the wire 10 of the magnetic sensor 5 can be taken out obliquely outward in the axial direction, and the magnetic flux from the magnetized ring 3 can be easily detected.

【0019】〔第2の実施の形態〕次に、図2に、この
発明の第2実施形態を示す。この第2実施形態は、外輪
21が静止していて内輪22が回転する玉軸受に装着さ
れている。この第2実施形態は、着磁リング23と磁気
センサ25を備える。着磁リング23は、内輪22の軸
端部の内周面22Aに固定されていて、その被検出面2
3Aが径方向外方を向いている。一方、磁気センサ25
は、検出部27と信号処理部28とこの信号処理部28
から信号を取り出すワイヤ30からなる。上記検出部2
7は、外輪21の軸方向端面21Aに固定された断面逆
L字状の取付部材26に固定されていて、検出面27A
が径方向内方に向いている。この検出部27の検出面2
7Aは、着磁リング23の被検出面23Aに対して軸方
向に位置ずれしていて、非対向になっている。
[Second Embodiment] FIG. 2 shows a second embodiment of the present invention. In the second embodiment, the outer ring 21 is mounted on a ball bearing in which the outer ring 21 is stationary and the inner ring 22 rotates. The second embodiment includes a magnetizing ring 23 and a magnetic sensor 25. The magnetizing ring 23 is fixed to the inner peripheral surface 22 </ b> A at the shaft end of the inner ring 22,
3A faces radially outward. On the other hand, the magnetic sensor 25
Is a detection unit 27, a signal processing unit 28, and the signal processing unit 28
And a wire 30 for extracting a signal from the Detection unit 2
7 is fixed to a mounting member 26 having an inverted L-shaped cross section fixed to an axial end surface 21A of the outer race 21 and has a detection surface 27A.
Are directed radially inward. Detection surface 2 of this detection unit 27
7A is displaced in the axial direction with respect to the detected surface 23A of the magnetized ring 23, and is not opposed.

【0020】この第2実施形態によれば、静止している
外輪21に対して内輪22が回転することによって、内
輪22に固定された着磁リング23が回転し、この着磁
リング23の回転による磁界の周期変化を磁気センサ2
5の検出部27で検出する。この検出部27は、検出磁
界を電気信号に変えて信号処理部28に送り、信号処理
部28はさらなる信号処理を行ってからワイヤ30に出
力する。
According to the second embodiment, the rotation of the inner ring 22 relative to the stationary outer ring 21 causes the magnetized ring 23 fixed to the inner ring 22 to rotate, and the rotation of the magnetized ring 23 Change of the magnetic field by the magnetic sensor 2
5 is detected by the detection unit 27. The detection unit 27 converts the detected magnetic field into an electric signal and sends the electric signal to the signal processing unit 28, and the signal processing unit 28 performs further signal processing and outputs the signal to the wire 30.

【0021】この第2実施形態では、着磁リング23の
被検出面23Aに対して、磁気センサ25の検出部27
の検出面27Aが軸方向に位置ずれして非対向になって
いる。このような非対向位置ずれ配置によれば、被検出
面23Aの法線方向つまり径方向への配置スペースを小
さくできるので、径方向への配置スペースが小さな車輪
周り構造に対応でき、小型化に対応することができる。
In the second embodiment, the detection section 27 of the magnetic sensor 25 is
Are shifted from each other in the axial direction and are not opposed to each other. According to such a non-opposing positional displacement arrangement, the arrangement space in the normal direction, that is, the radial direction of the detected surface 23A can be reduced, so that the arrangement space in the radial direction can be adapted to a small wheel surrounding structure, and the size can be reduced. Can respond.

【0022】尚、上記第1,第2の実施の形態では、車
輪速検出装置を内輪回転型の玉軸受に装着したが、本発
明は、外輪回転型の玉軸受や、ころ軸受にも適用でき
る。
In the first and second embodiments, the wheel speed detecting device is mounted on the inner ring rotating type ball bearing. However, the present invention is also applied to the outer ring rotating type ball bearing and the roller bearing. it can.

【0023】[0023]

【発明の効果】以上より明らかなように、請求項1の発
明の車輪速検出装置は、着磁リングの被検出面の各法線
が、磁気センサの検出面の各法線に一致していない。つ
まり、着磁リングの被検出面の正面に磁気センサの検出
面が対向しているのではなく、着磁リングの被検出面と
磁気センサの検出面が非対向もしくは斜め対向になって
いる。このような斜め対向配置や非対向配置によって、
車輪を含めた構造の自由度を向上でき、磁気センサのワ
イヤハーネスが車体へ干渉することを回避でき、小型化
を促進できる。
As is apparent from the above description, in the wheel speed detecting device according to the first aspect of the present invention, each normal of the detected surface of the magnetized ring coincides with each normal of the detection surface of the magnetic sensor. Absent. That is, the detection surface of the magnetic sensor does not face the front surface of the detection surface of the magnetized ring, but the detection surface of the magnetic ring and the detection surface of the magnetic sensor are non-facing or obliquely facing. Due to such obliquely facing arrangement and non-facing arrangement,
The degree of freedom of the structure including the wheels can be improved, the wiring harness of the magnetic sensor can be prevented from interfering with the vehicle body, and downsizing can be promoted.

【0024】また、請求項2の発明の車輪速検出装置
は、着磁リングの被検出面と、磁気センサの検出面とが
略平行になっているが、上記被検出面と検出面とが非対
向になるまで位置ずれしている。このような非対向位置
ずれ配置によれば、被検出面および検出面の法線方向へ
の配置スペースを小さくできるので、上記法線方向への
配置スペースが小さな車輪周り構造に対応でき、小型化
に対応することができる。
Further, in the wheel speed detecting device according to the second aspect of the present invention, the detected surface of the magnetized ring and the detection surface of the magnetic sensor are substantially parallel, but the detected surface and the detection surface are not parallel to each other. The position is shifted until it does not face. According to such a non-facing positional displacement arrangement, the arrangement space in the normal direction of the detected surface and the detection surface can be reduced, so that the arrangement space in the normal direction can be adapted to a small wheel surrounding structure, and the size is reduced. Can be handled.

【0025】また、請求項3の発明は、着磁リングの被
検出面と磁気センサの検出面とが、斜めに対向してい
る。このような斜め対向配置によれば、たとえば、磁気
センサのワイヤハーネスの取り出し方向の自由度を大き
くすることができ、ワイヤハーネスが車両本体へ干渉す
る等の問題を回避できる。また、所望の傾斜角度に設定
することによって、車輪速検出装置の占有スペースを調
節でき、車輪を含めた構造を小型化し易くなる。
In the invention of claim 3, the surface to be detected of the magnetized ring and the detection surface of the magnetic sensor are obliquely opposed to each other. According to such a diagonally opposed arrangement, for example, the degree of freedom of the magnetic sensor in the direction in which the wire harness is taken out can be increased, and problems such as interference of the wire harness with the vehicle body can be avoided. Further, by setting the desired inclination angle, the space occupied by the wheel speed detecting device can be adjusted, and the structure including the wheels can be easily reduced in size.

【図面の簡単な説明】[Brief description of the drawings]

【図1】 この発明の車輪速検出装置の第1実施形態を
示す断面図である。
FIG. 1 is a cross-sectional view showing a first embodiment of a wheel speed detection device of the present invention.

【図2】 この発明の第2実施形態を示す断面図であ
る。
FIG. 2 is a sectional view showing a second embodiment of the present invention.

【図3】 図3(A)は従来の車輪速検出装置を示す断面
図であり、図3(B)は上記従来例の着磁リングの構造を
示す模式図である。
FIG. 3A is a cross-sectional view illustrating a conventional wheel speed detecting device, and FIG. 3B is a schematic diagram illustrating a structure of a magnetized ring of the conventional example.

【符号の説明】[Explanation of symbols]

1,21…外輪、2,22…内輪、3,23…着磁リン
グ、3A,23A…被検出面、5,25…磁気センサ、6
…リング状金具、7,27…検出部、7A,27A…検出
面、8,28…信号処理部、10,30…ワイヤ。
1,21 ... outer ring, 2,22 ... inner ring, 3,23 ... magnetized ring, 3A, 23A ... detected surface, 5,25 ... magnetic sensor, 6
... Ring-shaped metal fittings, 7,27 ... Detector, 7A, 27A ... Detection surface, 8,28 ... Signal processor, 10,30 ... Wire.

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 N極とS極が周方向に交互に配列された
着磁リングの回転による磁界変化を磁気センサで検出し
て上記回転の速度を検出する車輪速検出装置において、 上記着磁リングの被検出面の各法線が、上記磁気センサ
の検出面の各法線に一致していないことを特徴とする車
輪速検出装置。
1. A wheel speed detecting device for detecting a rotation speed by detecting a magnetic field change due to rotation of a magnetized ring in which N poles and S poles are alternately arranged in a circumferential direction, and detecting the rotation speed. A wheel speed detection device, wherein each normal line of the detected surface of the ring does not coincide with each normal line of the detection surface of the magnetic sensor.
【請求項2】 請求項1に記載の車輪速検出装置におい
て、 上記着磁リングの被検出面の各法線と上記磁気センサの
検出面の各法線とが略平行になっていることを特徴とす
る車輪速検出装置。
2. The wheel speed detecting device according to claim 1, wherein each normal of the detected surface of the magnetized ring and each normal of the detection surface of the magnetic sensor are substantially parallel. Characteristic wheel speed detection device.
【請求項3】 請求項1に記載の車輪速検出装置におい
て、 上記着磁リングの被検出面と上記磁気センサの検出面と
が挟む角度が、90゜以下であることを特徴とする車輪
速検出装置。
3. The wheel speed detecting device according to claim 1, wherein an angle between the detected surface of the magnetized ring and the detection surface of the magnetic sensor is 90 ° or less. Detection device.
JP19449899A 1999-07-08 1999-07-08 Rolling bearing device Expired - Fee Related JP4141592B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19449899A JP4141592B2 (en) 1999-07-08 1999-07-08 Rolling bearing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19449899A JP4141592B2 (en) 1999-07-08 1999-07-08 Rolling bearing device

Publications (2)

Publication Number Publication Date
JP2001021576A true JP2001021576A (en) 2001-01-26
JP4141592B2 JP4141592B2 (en) 2008-08-27

Family

ID=16325528

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19449899A Expired - Fee Related JP4141592B2 (en) 1999-07-08 1999-07-08 Rolling bearing device

Country Status (1)

Country Link
JP (1) JP4141592B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7318589B2 (en) 2003-09-22 2008-01-15 Jtekt Corporation Sealing device and rotation detector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7318589B2 (en) 2003-09-22 2008-01-15 Jtekt Corporation Sealing device and rotation detector
US7872554B2 (en) 2003-09-22 2011-01-18 Jtekt Corporation Sealing device and rotation detector

Also Published As

Publication number Publication date
JP4141592B2 (en) 2008-08-27

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