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

Claim 7:
8. 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 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,
each second region includes only one magnetic pole,
the only one magnetic pole in each second region has a front face arranged on a side toward the magnetic detector and a rear face arranged on a side away from the magnetic detector, the front face includes a flat portion that extends along the first direction and a chamfered portion,
a length in the second direction along an entirety of the flat portion that extends along the first direction is the same as the constant length of the magnet along the second direction in the first region, and
a length in the second direction of the end magnetic pole in the second region at the chamfered portion is gradually reduced from the constant length as distance from the first region increases.