US 12,691,940 B2 · Position sensor and steering apparatus

Abstract

A position sensor includes a substrate having a first surface and a second surface opposite to the first surface; an initial shaft passing through the first and the second surfaces of the substrate in a direction perpendicular to the substrate; an initial gear mounted to the initial shaft and positioned above the first surface of the substrate; a first sub-shaft positioned above the first surface of the substrate, and disposed perpendicular to the substrate and parallel to the initial shaft; a first sub-gear mounted to the first sub-shaft and positioned above the first surface of the substrate and rotatably engaged with the initial gear; a first sub-rotor mounted to the first sub-shaft and positioned above the first surface of the substrate; a first sensing coil disposed on the first surface of the substrate; a second sub-shaft positioned above the first surface of the substrate, and disposed perpendicular to the substrate and parallel to the initial shaft and the first sub-shaft; a second sub-gear mounted to the second sub-shaft and positioned above the first surface of the substrate and rotatably engaged with the initial gear; a second sub-rotor mounted to the second sub-shaft and positioned above the first surface of the substrate; and a second sensing coil disposed on the first surface of the substrate.

Claims20

Dependent claims

A position sensor comprising:

a substrate having a first surface and a second surface opposite to the first surface;
an initial shaft passing through the first and the second surfaces of the substrate in a direction perpendicular to the substrate;
an initial gear mounted to the initial shaft and positioned above the first surface of the substrate;
a first sub-shaft positioned above the first surface of the substrate, and disposed perpendicular to the substrate and parallel to the initial shaft;
a first sub-gear mounted to the first sub-shaft and positioned above the first surface of the substrate and rotatably engaged with the initial gear;
a first sub-rotor mounted to the first sub-shaft and positioned above the first surface of the substrate;
a first sensing coil disposed on the first surface of the substrate;
a second sub-shaft positioned above the first surface of the substrate, and disposed perpendicular to the substrate and parallel to the initial shaft and the first sub-shaft;
a second sub-gear mounted to the second sub-shaft and positioned above the first surface of the substrate and rotatably engaged with the initial gear;
a second sub-rotor mounted to the second sub-shaft and positioned above the first surface of the substrate;
and
a second sensing coil disposed on the first surface of the substrate.

9 more elements

A steering apparatus comprising:

a rack bar assembly connected to wheels of a vehicle;
a steering motor configured to generate torque for linearly moving the rack bar assembly;
an angle sensor configured to sense a rotation angle of a steering column connected to a steering wheel of the vehicle;
an initial shaft connected to the rack bar assembly;
a position sensor configured to sense a rotation angle of the initial shaft;
and
a controller configured to control the steering motor based on the rotation angle of the steering column sensed by the angle sensor and the rotation angle of the initial shaft sensed by the position sensor,
wherein the position sensor includes:
a substrate including a first surface and a second surface opposite to the first surface, wherein an initial shaft passing through the first and the second surfaces of the substrate in a direction perpendicular to the substrate;
an initial gear mounted to the initial shaft and positioned above the first surface of the substrate;
a first sub-shaft positioned above the first surface of the substrate, and disposed perpendicular to the substrate and parallel to the initial shaft;
a first sub-gear mounted to the first sub-shaft and positioned above the first surface of the substrate and rotatably engaged with the initial gear;
a first sub-rotor mounted to the first sub-shaft and positioned above the first surface of the substrate;
a first sensing coil disposed on the first surface of the substrate;
a second sub-shaft positioned above the first surface of the substrate, and disposed perpendicular to the substrate and parallel to the initial shaft and the first sub-shaft;
a second sub-gear mounted to the second sub-shaft and positioned above the first surface of the substrate and rotatably engaged with the initial gear;
a second sub-rotor mounted to the second sub-shaft and positioned above the first surface of the substrate;
and
a second sensing coil disposed on the first surface of the substrate.

16 more elements

Dependencies are inferred from the claim text.

Position sensor and steering apparatus

Life of this patent

Position sensor and steering apparatus

Life of this patent

Abstract

Claims20