Detection device and operation device

A detection device which detects an action of a shaft member acting in response to an operation from outside, the detection device comprising:

• a hollow spherical body which has an outer shape formed in a substantially spherical shape and through which the shaft member is inserted;
• a magnet which is fixed inside the spherical body at a position linked with the action of the shaft member;
• and
• a magnetic field detection unit which is fixed at a position in the vicinity of a center of the spherical body and detects a magnetic field formed by the magnet,
• wherein the shaft member acts with respect to a virtual central axis which is parallel to a longitudinal direction and passes through the center of the spherical body,
• the inside of the spherical body is divided into a first magnetic field chamber and a second magnetic field chamber arranged in a central axis direction,
• the magnet comprises:
• a first magnet which is fixed to the shaft member inserted into the first magnetic field chamber;
• and
• a second magnet which is fixed in the second magnetic field chamber, and
• the magnetic field detection unit comprises:
• a first magnetic field sensor which detects a magnetic field in the first magnetic field chamber;
• and
• a second magnetic field sensor which detects a magnetic field in the second magnetic field chamber,
• the shaft member is capable of acting at least in an extending direction of the central axis, and
• the spherical body acts in the extending direction in conjunction with the action of the shaft member in the extending direction, and
• the detection device comprises:
• a movable member which moves in conjunction with an action of the spherical body in the extending direction;
• a fixed member which holds the movable member with the movable member being capable of acting;
• and
• a pressure sensor which is fixed to the fixed member and detects a pressing based on movement of the movable member.