Torque index sensor and steering device comprising same

A steering device comprising:

• a steering shaft;
• and
• a torque index sensor coupled to the steering shaft,
• wherein the torque index sensor includes a rotor having an outer circumferential surface on which a first magnet is disposed, a stator disposed at an outside of the rotor, a circuit board, a first cover accommodating the circuit board, a first Hall sensor and a second Hall sensor mounted on the circuit board, a magnet seating member coupled to the stator, a second magnet coupled to the magnet seating member, and a second cover made of a metal material and coupled to the first cover,
• wherein the magnet seating member and the second magnet are disposed between the first cover and the second cover,
• the second cover includes an upper plate in which a through hole is formed and a side plate extending in a rotational axis direction from the upper plate,
• the side plate includes a groove formed at a location corresponding to the second Hall sensor, and
• the first Hall sensor is configured to sense a magnetic flux of the stator, and the second Hall sensor is configured to sense a magnetic flux of the second magnet.

A torque index sensor comprising:

• a rotor having an outer circumferential surface on which a first magnet is disposed;
• a stator disposed at the outside of the rotor;
• a cover including a hole through which the stator passes;
• a circuit board disposed at one side of the cover;
• a first Hall sensor and a second Hall sensor mounted on the circuit board;
• and
• a second magnet and a magnet shield disposed at the other side of the cover,
• wherein the stator includes a holder coupled to a rotational axis,
• the magnet shield is coupled to the holder,
• the magnet shield includes an upper plate and a side plate configured to extend from the upper plate,
• an inner diameter of the upper plate is the same as an outer diameter of the holder,
• an outer diameter of the upper plate is greater than a distance from a center of the holder to the second magnet and less than a distance from the center of the holder to the second Hall sensor, and
• the side plate has a groove formed in a size corresponding to a width of the second Hall sensor, and
• wherein the first Hall sensor is configured to sense a magnetic flux of the stator, and the second Hall sensor is configured to sense a magnetic flux of the second magnet.

A steering device comprising:

• a steering shaft;
• and
• a torque index sensor coupled to the steering shaft,
• wherein the torque index sensor includes a rotor having an outer circumferential surface on which a first magnet is disposed, a stator disposed at the outside of the rotor, a cover including a hole through which the stator passes, a circuit board disposed at one side of the cover, a first Hall sensor and a second Hall sensor mounted on the circuit board, and a second magnet and a magnet shield disposed at the other side of the cover,
• wherein the stator includes a holder coupled to a rotational axis,
• the magnet shield is coupled to the holder,
• the magnet shield includes an upper plate and a side plate extending from the upper plate,
• an inner diameter of the upper plate is the same as an outer diameter of the holder,
• an outer diameter of the upper plate is greater than a distance from a center of the holder to the second magnet and less than a distance from the center of the holder to the second Hall sensor,
• the side plate has a groove formed in a size corresponding to a width of the second Hall sensor, and
• wherein the first Hall sensor is configured to sense a magnetic flux of the stator, and the second Hall sensor is configured to sense a magnetic flux of the second magnet.