| 摘要 |
PROBLEM TO BE SOLVED: To provide a magnetic encoder capable of strongly fixing a multipolar magnet and a core metal at a low cost without causing a fault in the multipolar magnet and maintaining high rotation detection accuracy for a long term.SOLUTION: A magnetic encoder includes a multipolar magnet 2 having magnetic poles alternately formed in a circumferential direction and provided in a core metal 1. The core metal 1 includes an inner diameter cylindrical part 4, a standing plate part 5 extended from one end of the inner diameter cylindrical part 4 to an outer diameter side and an outer diameter cylindrical part 6 extended in an axial direction from the outer diameter side edge of the standing plate part 5. A staking part 7 projected on the inner diameter side is provided in the outer diameter cylindrical part 6. The multipolar magnet 2 is integrally molded in an annular part 8 over the standing plate part 5 and the outer diameter cylindrical part 6 of the core metal 1 by insert-molding so that the staking part 7 is buried. |
