JPH08188006A - Bearing device for axle - Google Patents

Bearing device for axle

Info

Publication number
JPH08188006A
JPH08188006A JP7003787A JP378795A JPH08188006A JP H08188006 A JPH08188006 A JP H08188006A JP 7003787 A JP7003787 A JP 7003787A JP 378795 A JP378795 A JP 378795A JP H08188006 A JPH08188006 A JP H08188006A
Authority
JP
Japan
Prior art keywords
ring
nut
pulse
electromagnetic sensor
axle
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
Application number
JP7003787A
Other languages
Japanese (ja)
Inventor
Kazuo Komori
和雄 小森
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.)
NTN Corp
Original Assignee
NTN Corp
NTN Toyo Bearing 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 NTN Corp, NTN Toyo Bearing Co Ltd filed Critical NTN Corp
Priority to JP7003787A priority Critical patent/JPH08188006A/en
Publication of JPH08188006A publication Critical patent/JPH08188006A/en
Pending legal-status Critical Current

Links

Landscapes

  • Rolling Contact Bearings (AREA)

Abstract

PURPOSE: To provide a bearing device for an axle capable of calculating an accurate rotating speed of a wheel without being affected by a nut. CONSTITUTION: A magnetic shielding ring 20 covering the outer circumference of a nut 9 is fixed to the inner diameter surface of a pulse ring 10. Influence on an electromagnetic sensor 13 caused by rotation of the nut 9 is cut off by the magnetic shielding ring 20, and therefore, a swell of output wave form of the electromagnetic sensor 13 is retarded.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】この発明は、主として自動車に使
用されるアンチロックブレーキセンサを内蔵した車軸用
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 incorporating an antilock brake sensor mainly used in automobiles.

【0002】[0002]

【従来の技術】この種の車軸用軸受装置として、従来か
ら使用されているものの一例を図5及び図6に示す。図
示のように、軸受1は外輪2と、この外輪2の内側に複
数の転動体3を介して回動自在に設けられた内輪4とか
ら成る。各転動体3は保持器5により保持されている。
2. Description of the Related Art FIGS. 5 and 6 show an example of a conventional axle bearing device of this type. As shown, the bearing 1 includes an outer ring 2 and an inner ring 4 that is rotatably provided inside the outer ring 2 via a plurality of rolling elements 3. Each rolling element 3 is held by a cage 5.

【0003】内輪4の内径面にはアクスルシャフト6が
圧入されている。外輪2の外周には車体にボルト止めさ
れるフランジ7が設けられ、アクスルシャフト6の一端
部には車輪が取り付けられるフランジ8が設けられてい
る。アクスルシャフト6の他端部には外周が六角形のナ
ット9がねじ込まれており、このナット9と前記フラン
ジ8とで内輪4を締めつけることにより、軸受1に対す
るアクスルシャフト6の軸方向への移動を抑止すると共
に、内輪4とアクスルシャフト6とを一体に回転させる
ようになっている。ナット9は、磁性材料である鋼によ
り形成されている。
An axle shaft 6 is press-fitted into the inner diameter surface of the inner ring 4. A flange 7 that is bolted to the vehicle body is provided on the outer circumference of the outer ring 2, and a flange 8 to which the wheel is attached is provided at one end of the axle shaft 6. A nut 9 having a hexagonal outer circumference is screwed into the other end of the axle shaft 6, and the inner ring 4 is tightened by the nut 9 and the flange 8 to move the axle shaft 6 in the axial direction with respect to the bearing 1. And the inner shaft 4 and the axle shaft 6 are rotated integrally. The nut 9 is made of steel, which is a magnetic material.

【0004】ナット9の外側には、内輪4と共に回転す
るパルスリング10が設けられており、このパルスリン
グ10の一側面にはパルス歯列11が放射状に形成され
ている。外輪2の一側にはケース12が嵌められ、この
ケース12には電磁センサ13が設けられている。電磁
センサ13の先端部は前記パルス歯列11に対向してお
り、電磁センサ13とパルス歯列11との間で発生する
出力信号のピッチを読み取ることによりパルスリング1
0の回転数を検出し、車輪の回転速度を算出する。
A pulse ring 10 that rotates together with the inner ring 4 is provided on the outer side of the nut 9. A pulse tooth row 11 is radially formed on one side surface of the pulse ring 10. A case 12 is fitted on one side of the outer ring 2, and the case 12 is provided with an electromagnetic sensor 13. The tip of the electromagnetic sensor 13 faces the pulse tooth row 11, and the pulse ring 1 is read by reading the pitch of the output signal generated between the electromagnetic sensor 13 and the pulse tooth row 11.
The rotation speed of 0 is detected, and the rotation speed of the wheel is calculated.

【0005】[0005]

【発明が解決しようとする課題】しかしながら、上記の
ような車軸用軸受装置では、ナット9の外周が六角形で
あるため、ナット9の回転に伴い、ナット9の外周と電
磁センサ13との間の距離が変動し、図7に示すよう
に、電磁センサ13の出力波形にうねりが生じる。その
結果、出力信号のピッチ読み取り時に誤差が生じ、車輪
の正確な回転速度を算出できなくなることがあった。
However, in the bearing device for an axle as described above, since the outer circumference of the nut 9 is hexagonal, as the nut 9 rotates, the distance between the outer circumference of the nut 9 and the electromagnetic sensor 13 is increased. Changes, and as shown in FIG. 7, the output waveform of the electromagnetic sensor 13 undulates. As a result, an error may occur when the pitch of the output signal is read, and an accurate rotation speed of the wheel may not be calculated.

【0006】そこで、この発明は、ナットの影響を受け
ることなく、車輪の正確な回転速度を算出できる車軸用
軸受装置を提供することを課題とする。
Therefore, it is an object of the present invention to provide a bearing device for an axle, which can accurately calculate the rotation speed of a wheel without being affected by the nut.

【0007】[0007]

【課題を解決するための手段】上記の課題を解決するた
め、この発明は、外輪と内輪の間に転動体を設けた軸受
でアクスルシャフトを回動自在に支持し、前記内輪とア
クスルシャフトとをアクスルシャフトの端部にねじ込ま
れた外周が多角形のナットで締めつけ、そのナットの外
側に内輪と共に回転するパルスリングを設け、そのパル
スリングの側面に形成されたパルス歯列に対向する電磁
センサによりパルスリングの単位時間当たりの回転数を
検出する車軸用軸受装置において、前記パルスリングの
内径面に、ナットの外周を覆う磁気遮蔽リングを取り付
けた構成を採用したのである。
In order to solve the above problems, the present invention rotatably supports an axle shaft with a bearing provided with a rolling element between an outer ring and an inner ring, and the inner ring and the axle shaft are rotatably supported. Is tightened with a polygonal nut that is screwed into the end of the axle shaft, a pulse ring that rotates with the inner ring is provided outside the nut, and an electromagnetic sensor facing the pulse tooth row formed on the side surface of the pulse ring Thus, in the axle bearing device for detecting the number of revolutions of the pulse ring per unit time, the magnetic shield ring that covers the outer periphery of the nut is attached to the inner diameter surface of the pulse ring.

【0008】また、前記磁気遮蔽リングに代えて、電磁
センサにナットの方向へ延びる磁気遮蔽板を取り付けて
もよい。
Further, instead of the magnetic shield ring, a magnetic shield plate extending in the direction of the nut may be attached to the electromagnetic sensor.

【0009】[0009]

【作用】この発明に係る車軸用軸受装置では、磁気遮蔽
リングまたは磁気遮蔽板により、ナットの回転に伴う電
磁センサへの影響が遮断されるため、電磁センサの出力
波形のうねりが抑制される。
In the bearing device for an axle according to the present invention, the magnetic shield ring or the magnetic shield plate blocks the influence of the rotation of the nut on the electromagnetic sensor, so that the undulation of the output waveform of the electromagnetic sensor is suppressed.

【0010】[0010]

【実施例】以下、この発明の実施例を添付図面に基づい
て説明する。なお、先に述べた図5に示す従来例と同一
の部品には、同一の符号を付して説明を省略する。
Embodiments of the present invention will be described below with reference to the accompanying drawings. The same parts as those of the conventional example shown in FIG. 5 described above are designated by the same reference numerals, and description thereof will be omitted.

【0011】図1に示すように、パルスリング10の内
径面には、磁気遮蔽リング20が圧入されている。この
磁気遮蔽リング20の一側には、ナット9の外周を覆う
ように径方向に突出するフランジ部21が形成されてい
る。
As shown in FIG. 1, a magnetic shield ring 20 is press-fitted on the inner diameter surface of the pulse ring 10. A flange portion 21 is formed on one side of the magnetic shield ring 20 to project in the radial direction so as to cover the outer periphery of the nut 9.

【0012】上記のような車軸用軸受装置では、磁気遮
蔽リング20により、ナット9の回転に伴う電磁センサ
13への影響が遮断される。その結果、電磁センサ13
の出力波形は、図2に示すように、うねりが抑制され、
図3に示すナット9が無い場合の出力波形とほぼ同等に
なり、出力信号のピッチ読み取り時における誤差が抑制
される。
In the above-described axle bearing device, the magnetic shield ring 20 blocks the influence of the rotation of the nut 9 on the electromagnetic sensor 13. As a result, the electromagnetic sensor 13
In the output waveform of, the swell is suppressed as shown in FIG.
The output waveform is almost the same as that in the case where the nut 9 shown in FIG. 3 is not provided, and the error in reading the pitch of the output signal is suppressed.

【0013】また、磁気遮蔽リング20に代えて、図4
に示すように、電磁センサ13にナット9の方向へ延び
る磁気遮蔽板22を取り付けても同様の効果が得られ
る。
Further, instead of the magnetic shield ring 20, FIG.
As shown in, even if the magnetic shield plate 22 extending in the direction of the nut 9 is attached to the electromagnetic sensor 13, the same effect can be obtained.

【0014】[0014]

【効果】この発明によると、上記のような構成としたの
で、磁気遮蔽リングまたは磁気遮蔽板により、ナットの
回転に伴う電磁センサへの影響が遮断され、電磁センサ
の出力波形のうねりが抑制される。
According to the present invention, since the magnetic shield ring or the magnetic shield plate has the above-described structure, the influence of the rotation of the nut on the electromagnetic sensor is blocked, and the undulation of the output waveform of the electromagnetic sensor is suppressed. It

【0015】従って、出力信号のピッチ読み取り時にお
ける誤差が抑制され、車輪の正確な回転速度を算出する
ことができるので、アンチロックブレーキシステムの誤
作動が防止され、安全性が向上する。
Therefore, the error in reading the pitch of the output signal is suppressed, and the accurate rotation speed of the wheel can be calculated, so that the malfunction of the antilock brake system is prevented and the safety is improved.

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

【図1】実施例の縦断正面図FIG. 1 is a vertical sectional front view of an embodiment.

【図2】同上の電磁センサの出力波形を示す図FIG. 2 is a diagram showing an output waveform of the electromagnetic sensor of the above.

【図3】ナットなしの場合の電磁センサの出力波形を示
す図
FIG. 3 is a diagram showing an output waveform of an electromagnetic sensor without a nut.

【図4】他の実施例を示す一部縦断正面図FIG. 4 is a partially longitudinal front view showing another embodiment.

【図5】従来例の縦断正面図FIG. 5 is a vertical sectional front view of a conventional example.

【図6】同上の要部縦断側面図FIG. 6 is a vertical sectional side view of the main part of the same.

【図7】同上の電磁センサの出力波形を示す図FIG. 7 is a diagram showing an output waveform of the electromagnetic sensor of the above.

【符号の説明】[Explanation of symbols]

1 軸受 2 外輪 3 転動体 4 内輪 6 アクスルシャフト 9 ナット 10 パルスリング 11 パルス歯列 13 電磁センサ 20 磁気遮蔽リング 22 磁気遮蔽板 1 Bearing 2 Outer Ring 3 Rolling Element 4 Inner Ring 6 Axle Shaft 9 Nut 10 Pulse Ring 11 Pulse Tooth Row 13 Electromagnetic Sensor 20 Magnetic Shielding Ring 22 Magnetic Shielding Plate

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 外輪と内輪の間に転動体を設けた軸受で
アクスルシャフトを回動自在に支持し、前記内輪とアク
スルシャフトとをアクスルシャフトの端部にねじ込まれ
た外周が多角形のナットで締めつけ、そのナットの外側
に内輪と共に回転するパルスリングを設け、そのパルス
リングの側面に形成されたパルス歯列に対向する電磁セ
ンサによりパルスリングの単位時間当たりの回転数を検
出する車軸用軸受装置において、前記パルスリングの内
径面に、ナットの外周を覆う磁気遮蔽リングを取り付け
たことを特徴とする車軸用軸受装置。
1. A nut having a polygonal outer periphery in which an axle shaft is rotatably supported by a bearing having a rolling element provided between an outer ring and an inner ring, and the inner ring and the axle shaft are screwed into the ends of the axle shaft. A shaft bearing that detects the number of revolutions of the pulse ring per unit time by an electromagnetic sensor facing the pulse tooth row formed on the side of the pulse ring. In the device, a bearing device for an axle, wherein a magnetic shield ring that covers an outer circumference of the nut is attached to an inner diameter surface of the pulse ring.
【請求項2】 外輪と内輪の間に転動体を設けた軸受で
アクスルシャフトを回動自在に支持し、前記内輪とアク
スルシャフトとをアクスルシャフトの端部にねじ込まれ
た外周が多角形のナットで締めつけ、そのナットの外側
に内輪と共に回転するパルスリングを設け、そのパルス
リングの側面に形成されたパルス歯列に対向する電磁セ
ンサによりパルスリングの単位時間当たりの回転数を検
出する車軸用軸受装置において、前記電磁センサに、ナ
ットの方向へ延びる磁気遮蔽板を取り付けたことを特徴
とする車軸用軸受装置。
2. A nut having a polygonal outer periphery in which an axle shaft is rotatably supported by a bearing provided with a rolling element between an outer ring and an inner ring, and the inner ring and the axle shaft are screwed into the ends of the axle shaft. A shaft bearing that detects the number of revolutions of the pulse ring per unit time by an electromagnetic sensor facing the pulse tooth row formed on the side of the pulse ring. In the device, a bearing device for an axle, wherein a magnetic shield plate extending in the direction of the nut is attached to the electromagnetic sensor.
JP7003787A 1995-01-13 1995-01-13 Bearing device for axle Pending JPH08188006A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7003787A JPH08188006A (en) 1995-01-13 1995-01-13 Bearing device for axle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7003787A JPH08188006A (en) 1995-01-13 1995-01-13 Bearing device for axle

Publications (1)

Publication Number Publication Date
JPH08188006A true JPH08188006A (en) 1996-07-23

Family

ID=11566902

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7003787A Pending JPH08188006A (en) 1995-01-13 1995-01-13 Bearing device for axle

Country Status (1)

Country Link
JP (1) JPH08188006A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108973528A (en) * 2018-07-06 2018-12-11 山东交通学院 A kind of wheel shaft magnetic suspension drive type electric automobile

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4964896U (en) * 1972-09-18 1974-06-06
JPS57197468U (en) * 1981-06-05 1982-12-15
JPS58196064U (en) * 1982-06-22 1983-12-27 新保 義雄 Box wrench with stopper

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4964896U (en) * 1972-09-18 1974-06-06
JPS57197468U (en) * 1981-06-05 1982-12-15
JPS58196064U (en) * 1982-06-22 1983-12-27 新保 義雄 Box wrench with stopper

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108973528A (en) * 2018-07-06 2018-12-11 山东交通学院 A kind of wheel shaft magnetic suspension drive type electric automobile

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