Patent ID: 8662755
Filing Date: 2014-03-04
Classification: F16C,G01B

Abstract:
1. A roller bearing device having an intra-contact angle arrangement structure of a rotation sensor comprising: a roller bearing having an inner ring and an outer ring; an inner-ring supported member supported by the inner ring; and an outer-ring supported member supported by the outer ring, wherein the rotation sensor is arranged between the inner-ring supported member and the outer-ring supported member and outputs a sensor signal that changes according to relative positions thereof, and wherein, the roller bearing has two different contact angles, and wherein, the rotation sensor is arranged between a first straight line extending from a vertex of the contact angles in a direction of one of the contact angles and a second straight line extending from the vertex of the contact angles in a direction of the other contact angle and on either one side of the inner ring or the outer ring, and wherein, the rotation sensor comprises: a first resolver having a first resolver rotor and a first detecting means for detecting a reluctance change between the first detecting means and the first resolver rotor; and a second resolver having a second resolver rotor and a second detecting means for detecting a reluctance change between the second detecting means and the second resolver rotor; and wherein both of a gap between the first resolver rotor and the first detecting means and a gap between the second resolver rotor and the second detecting means are located within a range of bearing width of the roller bearing in an axial direction.