Sensor-equipped bearing assembly and motor using t

专利名称：Sensor-equipped bearing assembly and

motor using the same

发明人：Koike, Takashi,Ishikawa, Tomomi申请号：EP03017385.0申请日：20030731公开号：EP1403540A3公开日：20090318

专利附图：

摘要：To minimize change in duty ratio of an output signal brought about by aleakage flux and to obtain a sensor output stabilized even under an environment of useabundant of the leakage fluxes, a sensor-equipped bearing assembly 31 includes a

rotatable race member 32 provided with a to-be-detected portion 1 having a magneticcharacteristic in which N and S magnetic poles alternate with each other. In face-to-facerelation with this to-be-detected portion 1, a magnetic detecting portion 2 is secured to astationary race member 33. The magnetic detecting portion 2 is made up of magneticsensors arranged in a direction circumferentially of the race members 32, 33 and eachcapable of providing an analog output. A differential output generating means 7 isprovided for processing a differential output of the adjoining two magnetic sensors 2aand 2b as an encoder signal for one phase.

申请人：NTN Corporation

地址：3-17, Kyomachibori 1-chome, Nishi-ku, Osaka-shi, Osaka 550-0003 JP

国籍：JP

代理机构：Fleuchaus, Michael A.

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