Input device having magnetic sensor

An input device comprising:

• a fixing member;
• a rotatable movable member supported by the fixing member rotatably about a first direction as a center of rotation;
• an annular magnetic member attached to the rotatable movable member, the annular magnetic member including:
• a body;
• a first extended portion extended from one end of the body;
• a second extended portion extended from the other end of the body, wherein a divided space is formed between a first tip portion of the first extended portion and a second tip portion of the second extended portion facing along a second direction orthogonal to the first direction, and the annular magnetic member is configured to generate a magnetic field going from the first extended portion toward the second extended portion;
• a permanent magnet;
• a first yoke having the first tip portion and a first base portion connected to one pole of the permanent magnet;
• and
• a second yoke having the second tip portion and a second base portion connected to the other pole of the permanent magnet;
• and
• a magnetic sensor attached to the fixing member, the magnetic sensor being configured to detect a direction of the magnetic field emitted from one of the first extended portion and the second extended portion toward the other of the first extended portion and the second extended portion to detect the rotation of the rotatable movable member,
• wherein the body extends in a third direction orthogonal to the first direction and the second direction,
• the first yoke has a first middle portion extending along a surface parallel to the second direction and the third direction and a first bent piece bent from the first middle portion along the first direction,
• the second yoke has a second middle portion extending along the surface parallel to the second direction and the third direction and a second bent piece bent from the second middle portion along the first direction, and
• the one pole of the permanent magnet is connected to the first bent piece and the other pole is connected to the second bent piece.