Throttle Device

A throttle device comprising:

• an operation mechanism configured to control operation of the throttle device;
• an interlocking member configured to rotate in conjunction with the operation mechanism;
• a rotating member including a magnet mounted on the rotating member, wherein the rotating member is configured to rotate together with the magnet in accordance with a rotation angle of the interlocking member;
• a detection mechanism configured to detect a magnetic change of the magnet associated with rotation of the rotating member to detect a rotation angle of the rotating member;
• a case member configured to rotatably hold the interlocking member and the rotating member;
• and
• a magnetic shielding member made of a magnetic material, wherein:
• the magnetic shielding member is located around the magnet and the detection mechanism,
• the magnetic shielding member is configured to shield against external magnetism,
• the throttle device is configured to:
• detect an operation amount of the operation mechanism based on the rotation angle of the rotating member detected by the detection mechanism, and
• control a drive source of a vehicle, and
• the magnetic shielding member includes:
• a cylindrical lateral part that is open at both ends and laterally surrounds the magnet and the detection mechanism, and
• a plate-shaped bottom part that closes at least one open end of the cylindrical lateral part.