Switched reluctance motor and connection method for sensor shutter thereof

A switched reluctance motor, comprising:

• a stator;
• a rotor to rotate with respect to the stator centering around a rotational shaft;
• a sensor shutter having a sensing part through which a light passes, and the sensor shutter being connected to the rotational shaft with a pre-set assembling position;
• a rib connected to the sensor shutter, the rib being curved at an end portion of the rotational shaft so as to prevent the sensor shutter from being separated from the rotational shaft.

A connection method for a sensor shutter of a switched reluctance motor in which the sensor shutter has a sensing area for passing a light and a shaft hole at a center thereof, and the sensor shutter is connected to an end portion of a rotational shaft of a rotor, the connection method comprising:

• forming a rib at the end portion of the rotational shaft to protrude in an axial line direction;
• connecting the rotational shaft to the sensor shutter so the rib passes through the shaft hole;
• and
• attaching the sensor shutter by curving the rib.

A switched reluctance motor, comprising:

• a stator;
• a rotor that rotates with respect to the stator centering around a rotational shaft;
• a sensor shutter that includes at least one sensing part through which a light passes, the sensor shutter being attached to an end portion of the rotational shaft;
• a stopping ring attached to the end portion of the rotational shaft so as to prevent the sensor shutter from being separated from the rotational shaft, wherein a sensor shutter connector is formed at the end portion of the rotational shaft, the sensor shutter connector to reduce in a radial direction to allow the sensor shutter to be attached to the end portion of the rotational shaft, wherein the stopping ring is attached to the sensor shutter connector,
• wherein the sensor shutter includes a shaft hole to allow the sensor shutter connector to be inserted therein,
• wherein a rotation restraining part is formed at the sensor shutter connector and the shaft hole to restrain rotation, and wherein the rotation restraining part includes a plurality of protrusions that inwardly protrude from an inner side of the shaft hole in a radial direction, and a plurality of protrusion receiving recesses formed at the sensor shutter connector to receive the plurality of protrusions.