| 摘要 |
A rotary pulse generator includes a housing having a longitudinally extending bore formed therein; a rotation shaft extending in and along the bore of the housing; a pinion gear rotatably held by one end of the housing, the pinion gear being connected at a center portion thereof to one end of the rotation shaft so that the pinion gear and the rotation shaft rotate together about an axis of the rotation shaft; a cylindrical supporter disposed on the other end of the rotation shaft to rotate therewith about the axis of the rotation shaft; a bearing sleeve disposed between the wall of the bore and the cylindrical supporter so that the cylindrical supporter is smoothly rotated within the bearing sleeve; an annular magnet unit securely disposed on the cylindrical supporter to rotate therewith about the axis of the rotation shaft; and a magnetic detecting device stationarily held by the housing and located near the annular magnet unit to produce, upon rotation of the magnet unit, an information signal which represents the rotation speed of the rotation shaft. The rotation shaft extends in the bore of the housing without contacting a wall defined by the bore.
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