JPH10227802A5 - - Google Patents

Info

Publication number
JPH10227802A5
JPH10227802A5 JP1997028000A JP2800097A JPH10227802A5 JP H10227802 A5 JPH10227802 A5 JP H10227802A5 JP 1997028000 A JP1997028000 A JP 1997028000A JP 2800097 A JP2800097 A JP 2800097A JP H10227802 A5 JPH10227802 A5 JP H10227802A5
Authority
JP
Japan
Prior art keywords
circular ring
sensor
sensor rotor
detection
portions
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
JP1997028000A
Other languages
Japanese (ja)
Other versions
JPH10227802A (en
Filing date
Publication date
Application filed filed Critical
Priority to JP9028000A priority Critical patent/JPH10227802A/en
Priority claimed from JP9028000A external-priority patent/JPH10227802A/en
Publication of JPH10227802A publication Critical patent/JPH10227802A/en
Publication of JPH10227802A5 publication Critical patent/JPH10227802A5/ja
Pending legal-status Critical Current

Links

Description

【0014】
何れにしても、上記センサロータ14aは、円輪部9と、この円輪部9の内周縁に形成した第一円筒部15と、この円輪部の外周縁に形成した第二円筒部16と、上記円輪部9に円周方向に亙って等間隔に、放射方向に形成した多数のスリット状の透孔10とを備える。そして、上記円輪部9を、被検出特性を円周方向に亙って交互に且つ等間隔に変化させた、被検出部としている。又、上記第一円筒部15の先端縁部(図1の右端縁部)内外両周面は、先端縁に向かう程厚さ寸法を小さくなる方向に傾斜させて、この先端縁部の断面形状をくさび状にしている。
[0014]
In either case, the sensor rotor 14a comprises a circular ring portion 9, a first cylindrical portion 15 formed on the inner peripheral edge of the circular ring portion 9 , a second cylindrical portion 16 formed on the outer peripheral edge of the circular ring portion 9, and a number of slit-like through holes 10 formed radially at equal intervals around the circumference of the circular ring portion 9. The circular ring portion 9 serves as a detection portion in which the detection characteristic changes alternately and at equal intervals around the circumference. The inner and outer peripheral surfaces of the leading edge portion (the right edge portion in FIG. 1) of the first cylindrical portion 15 are inclined so that the thickness decreases toward the leading edge, giving the leading edge a wedge-shaped cross section.

【0027】
尚、以上に述べた第1〜8例のセンサロータ14a〜14の場合には、各円輪部9、9aの被検出特性を円周方向に亙り交互に変化させる為に、これら各円輪部9、9aに、必ずしも上述の様な透孔10を形成する必要はない。例えば、これら各円輪部9、9aをS極とN極とに交互に着磁したり、或は、これら各円輪部9、9aの側面の反射特性を交互に変化させる事もできる。要は、被検出部である上記各円輪部9、9aの被検出特性が、この被検出部と組み合わせるセンサとの関係で、交互に、且つ等間隔に変化していれば良い。
[0027]
In the case of the sensor rotors 14a to 14h of the first to eighth examples described above, it is not necessary to form the through holes 10 as described above in each of the circular ring portions 9, 9a in order to alternately change the detection characteristics of the circular ring portions 9, 9a in the circumferential direction. For example, the circular ring portions 9, 9a can be magnetized alternately with south and north poles, or the reflection characteristics of the side surfaces of the circular ring portions 9, 9a can be alternately changed. The point is that the detection characteristics of the circular ring portions 9, 9a, which are the detection portions, should alternate and change at equal intervals in relation to the sensors to be combined with these detection portions.

【0030】
上述の様なセンサロータ14iと転がり軸受ユニットとを組み合わせて、車輪の回転速度を検出する為の回転速度検出用転がり軸受ユニットを構成するには、上記センサロータ14iを構成する固定円筒部17を図15に示す様に、上記固定円筒部17をハブ1の端部に締まり嵌めにより外嵌固定するか、或は上記固定円筒部17を上記転がり軸受ユニットを構成するハブ1の一端部に締まり嵌めにより内嵌固定する。尚、前述の図2、3、5、6、8にそれぞれ示した軸受ユニットが、何れも外輪軌道3、3をハブ1の内周面に直接形成しているのに対して、本例のセンサロータ14を固定する軸受ユニットは、外輪軌道3、3を、ハブ1の内側に内嵌固定した外輪20の内周面に形成している。尚、本例のセンサロータ14iを前述の図2、3、5、6、8にそれぞれ示した軸受ユニットに組み込む事が可能である事は勿論、前述の各例に示したセンサロータ14a〜14hを図15に示した転がり軸受ユニットに組み込む事も可能である。
[0030]
To configure a rotational speed detecting rolling bearing unit for detecting the rotational speed of a wheel by combining the sensor rotor 14i and a rolling bearing unit as described above, the fixed cylindrical portion 17 that configures the sensor rotor 14i is either externally fitted and fixed to the end of the hub 1 by an interference fit, as shown in Figure 15, or the fixed cylindrical portion 17 is internally fitted and fixed to one end of the hub 1 that configures the rolling bearing unit by an interference fit. Note that while the bearing units shown in Figures 2, 3, 5, 6 and 8 have the outer ring raceways 3, 3 formed directly on the inner peripheral surface of the hub 1, the bearing unit that secures the sensor rotor 14i in this example has the outer ring raceways 3, 3 formed on the inner peripheral surface of an outer ring 20 that is internally fitted and fixed inside the hub 1. It is of course possible to incorporate the sensor rotor 14i of this example into the bearing units shown in Figures 2, 3, 5, 6, and 8, and it is also possible to incorporate the sensor rotors 14a to 14h shown in each of the above examples into the rolling bearing unit shown in Figure 15.

【0037】
上述の様に、本例のセンサロータ14mは、円輪部9aの片面の被検出特性を、この円輪部9aの片面に添着したエンコーダ22により変化させている為、上記センサロータ14を造る為の金属板の材質は特に問わない。その他の構成及び作用は、前述した第3例の場合と同様であるから、重複する説明は省略する。尚、図示は省略するが、上記センサロータ14mの様に、円輪部9aの片面にエンコーダ22を添着する事により、被検出部を構成するこの円輪部9aの片面の被検出特性を変化させる事は、前述の図1〜13した第1〜8例の各センサロータ14a〜14hにも適用できる。この場合、これら各センサロータ14a〜14hの透孔10を省略し、代わりに上記エンコーダ22を添着する。
[0037]
As described above, the sensor rotor 14m of this embodiment changes the detection characteristic on one side of the circular ring portion 9a by the encoder 22 attached to that side. Therefore, the material of the metal plate used to manufacture the sensor rotor 14m is not particularly important. The other configurations and functions are the same as those of the third embodiment, so a redundant description will be omitted. Although not shown, the sensor rotor 14m, which changes the detection characteristic on one side of the circular ring portion 9a by attaching the encoder 22 to that side, can also be applied to the sensor rotors 14a to 14h of the first to eighth embodiments shown in Figures 1 to 13. In this case, the through-hole 10 of each of the sensor rotors 14a to 14h is omitted, and the encoder 22 is attached instead.

JP9028000A 1997-02-12 1997-02-12 Sensor rotor for detecting rotational speed Pending JPH10227802A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9028000A JPH10227802A (en) 1997-02-12 1997-02-12 Sensor rotor for detecting rotational speed

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9028000A JPH10227802A (en) 1997-02-12 1997-02-12 Sensor rotor for detecting rotational speed

Publications (2)

Publication Number Publication Date
JPH10227802A JPH10227802A (en) 1998-08-25
JPH10227802A5 true JPH10227802A5 (en) 2004-12-16

Family

ID=12236551

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9028000A Pending JPH10227802A (en) 1997-02-12 1997-02-12 Sensor rotor for detecting rotational speed

Country Status (1)

Country Link
JP (1) JPH10227802A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4886252B2 (en) * 2005-09-09 2012-02-29 プレス工業株式会社 Sensor ring
WO2008084758A1 (en) * 2007-01-09 2008-07-17 Ntn Corporation Bearing device for wheel
FR3049323B1 (en) * 2016-03-24 2019-06-14 Renault S.A.S. "DIFFERENTIAL CROWN EQUIPPED WITH A TARGET FOR MEASURING ITS ROTATION SPEED AND ARRANGEMENT IN A GEARBOX"
DE102019134246B3 (en) * 2019-12-13 2021-04-29 Schaeffler Technologies AG & Co. KG Encoder for a wheel bearing and wheel bearing with such an encoder

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