Rolling bearing unit having a plurality of rolling members between a stationary raceway and a rotatable raceway and a rotating speed sensor
AssigneeNsk Ltd.
InventorsHideo Ouchi, Hiroya Miyazaki
Life of this patent
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Abstract
A rolling-ball bearing unit with a rotating speed sensor comprising rotating and stationary rings, a tonewheel, a first seal ring provided to seal between the tonewheel and the section where rolling members are provided, and a second seal ring having a base end portion fixed to the peripheral portion of a cover for the sensor and a tip end portion provided in a sliding contact relationship with a member provided axially adjacent the bearing unit and rotating with the rotating ring, and a harness take-out portion provided in a relatively their portion of the cover.
Claims3
A rolling bearing unit with a rotating speed sensor comprising:
- a stationary ring having a first peripheral surface on which a first raceway is formed,
- a rotatable ring having a second peripheral surface on which a second raceway is formed,
- a member rotating with the rotatable ring,
- a plurality of rolling members provided in a section between the first and second raceways,
- a tonewheel fixed to the rotatable ring,
- a cover fixed to the stationary ring and a peripheral portion,
- a sensor supported by the cover,
- the tonewheel having a circular ring portion, and a side face of which is faced to the sensor with an axial small gap therebetween and having magnetic characteristics alternately changed with a uniform interval in a circumferential direction,
- a first seal ring provided between the circular ring portion and the section where the rolling members are provided, to seal between the tonewheel and the section, and
- a second seal ring having a base end portion which is fixed to the peripheral portion of the cover and a tip end portion provided in a sliding contact relationship with the member rotating with the rotatable ring.
A rolling bearing unit with a rotating speed sensor comprising:
- a stationary outer ring member having an inner peripheral surface on which an outer ring raceway is formed,
- a first mounting flange provided on an outer peripheral surface of the outer ring member to mount the outer ring member to a suspension apparatus,
- an inner ring member having an outer peripheral surface on which an inner ring raceway is formed, and a central bore through which a drive shaft extends to rotate the inner ring member during use,
- a second mounting flange mounted to the outer peripheral surface of the inner ring member at a portion spaced from the outer ring member at a first end of the inner ring member to mount a vehicle wheel to the inner ring member,
- a plurality of rolling members provided between the outer and inner ring raceways,
- an annular tonewheel fixed to the outer peripheral surface of the inner ring member at a portion spaced from the inner ring raceway at a second end of the inner ring member, and having magnetic characteristics alternately changing with a uniform interval in a circumferential direction,
- an annular cover fixed to the outer ring member at a portion faced to the tonewheel,
- a sensor supported inside the cover and faced to the tonewheel at a circumferential portion thereof,
- a harness take-out portion to take out a harness to output a signal from the sensor, and
- the cover having an axial length comprising a first larger portion with respect to holding the sensor and a shorter portion where the harness take-out portion is provided.
Dependencies are inferred from the claim text.