| 摘要 |
PROBLEM TO BE SOLVED: To provide a pulser ring having no restriction or the diameter or the number of punched holes by forming hardly deformable spacing between punched holes. SOLUTION: This pulser ring comprises board-like magnetic material is formed in a continuous ring-shape on a circumference, and has plural rectangular punched holes having a uniform width in the circumferential direction, formed with equal spacing in the circumferential direction, and fixed on a rotary member. The ring has such a characteristic that a spacing C of at least one place 22 among spacing B between the plural punched holes 21 is made larger than spacings B between other punched holes.
|
