Sensor-equipped rolling bearing unit
AssigneeKoyo Seiko Co., Ltd.
InventorsMinoru Sentoku, Shirou Nakano
Life of this patent
Estimating the term…
Abstract
A sensor (47) includes a stator (48) having four or more magnetic pole teeth (48b) and concentric with a stationary-side raceway member (43), and excitation coils (49) and detection coils (50) wound around the respective magnetic pole teeth (48b). Signals generated in the detection coils (50) according to distances between the magnetic pole teeth (48b) and a rotation-side raceway member (44) are taken out for the respective magnetic pole teeth (48b). The load acting on a rolling bearing (41) is obtained in processing means from these signals.
Claims2
A sensor-equipped rolling bearing unit comprising:
- a rolling bearing which includes a stationary-side raceway member, a rotation-side raceway member, and rolling elements;
- and
- a sensor device which includes a sensor provided to the stationary-side raceway member, and processing means for obtaining a load acting on the rolling bearing from an output of the sensor, wherein
- the sensor is an AE sensor and disposed in a vicinity of a seal device provided between the stationary-side raceway member and a rotation-side raceway member, and
- the load acting on the rolling bearing is obtained in the processing means from a sliding sound of the seal device detected by the AE sensor.
A sensor-equipped rolling bearing unit comprising:
- a rolling bearing which includes a stationary-side raceway member, a rotation-side raceway member, and rolling elements;
- and
- a sensor device which includes a sensor provided to the stationary-side raceway member, and processing means for obtaining a load acting on the rolling bearing from an output of the sensor, wherein
- the sensor includes a stator having four or more magnetic pole teeth and concentric with the stationary-side raceway member, and excitation coils and detection coils wound around the respective magnetic pole teeth,
- signals generated in the detection coils according to distances between the magnetic pole teeth and the rotation-side raceway member are taken out for the respective magnetic pole teeth, and
- the load acting on the rolling bearing is obtained in the processing means from these signals.
Dependencies are inferred from the claim text.