Patent ID: 11933640
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A magnetic linear position detector comprising:
a stator; and
a mover adapted to be movable along a first direction with respect to the stator, wherein
one of the stator and the mover includes a magnetic detector,
the other of the stator and the mover includes a magnet,
the magnet has a first face facing the magnetic detector, the first face being provided alternately with N poles and S poles along the first direction,
the magnet includes:
a first region; and
a second region provided adjacent to and on each side of the first region along the first direction,
in the first region, a length of the magnet along a second direction perpendicular to the first face is constant,
the second region includes a plurality of magnetic poles, and
in the second region, the length of the magnet along the second direction is gradually shortened for each of the plurality of magnetic poles, from a first magnetic pole in the plurality of magnetic poles on a side of the first region to a last magnetic pole in the plurality of magnetic poles at each end along the first direction such that a length in the second direction of each magnetic pole in the second region is shorter than a length in the second direction of an adjacent magnetic pole in the second region that is closer in the first direction to the first region.