Patent application number | Description | Published |
20090021246 | ROTATION ANGLE DETECTION DEVICE AND ROTATION ANGLE CORRECTION METHOD - A device for detecting an absolute rotation angle of multiple rotation with a high accuracy and high resolution by using a target connected to the rotation axis and having an outer circumferential surface to which magnetic poles of alternate polarities are magnetized. The device includes: a first rotor holding a target connected to an input axis and having an outer circumferential surface to which magnetic poles of alternate polarities are magnetized at an identical interval and having a multi-rotatable gear; a second rotor connected to the gear of the first rotor, rotated at a low speed by the first rotor, and having a magnet at the center portion; a first detection unit and a second detection unit for detecting the rotation angles of them. With a simple configuration, it is possible to detect an absolution rotation angle with a high accuracy and a high resolution. | 01-22-2009 |
20090051408 | SWITCH FOR VEHICLES - Provided is a switch for vehicles, which includes an intermittent driving device connected to a control device which opens and closes a switching device based on the magnitude of the magnetism of a magnet mounted on an operating body. Therefore, the supply of power from a battery to a detection device and the control device is intermittently performed at a predetermined period by the intermittent driving device. | 02-26-2009 |
20090051409 | SWITCH FOR VEHICLES - Provided is a switch for vehicles, including a first switching device which performs the electrical connection/disconnection between a battery and a stop lamp and a second switching device connected to a control device which opens and closes the first switching device based on the magnitude of the magnetism of a magnet mounted on an operating body. Various controls such as auto-cruise control and so on as well as the turn on/off of the stop lamp can be simultaneously performed by the one magnet mounted on the operating body of the switch for vehicles. | 02-26-2009 |
20090058405 | ROTATION ANGLE SENSOR - A rotation angle sensor is provided with a shaft portion having a torsion bar, a rotation angle sensing portion for detecting rotation angle of the shaft portion, and a torque sensing portion for detecting angle of torsion of the torsion bar. The rotation angle sensing portion and the torque sensing portion improve their own detecting accuracies by using each other's detecting result, whereby the rotation angle sensor can detect rotation angle and angle of torsion of a multi-turn rotatable body with high accuracy and high resolution. | 03-05-2009 |
20090211374 | ROTATION ANGLE AND TORQUE DETECTION APPARATUS - A rotation angle and torque detection apparatus includes: a target having magnetic poles magnetized at an outer circumference face so that the magnetic poles have alternately-different polarities and the target can be rotated multiple times; and a detector that is positioned to have a fixed distance from the target in a radial direction of the target and to have a fixed distance from the center of lo the target in an axial direction and that is provided at a plane vertical to the radial direction of the target. This rotation angle and torque detection apparatus can sense a torque and a multiple rotation angle with high resolution and high accuracy. | 08-27-2009 |
20110219851 | ROTARY ANGLE AND ROTARY TORQUE SENSING DEVICE - A rotary-angle and rotary-torque sensing device includes a first rotator rotating together with a steering shaft, a second rotator rigidly mounted to the first rotator, a rotary torque sensor for sensing rotary torque generated between the first rotator and the second rotator, a first sensor rotating together with the first rotator, a second sensor rotating together with the second rotator, a rotary angle sensor for sensing rotary angles of the first sensor and the second sensor, and a controller for detecting rotary torque by using the rotary torque sensor and the rotary angle sensor. | 09-15-2011 |
20110303001 | ROTARY ANGLE AND ROTARY TORQUE SENSING DEVICE - A rotary angle and rotary torque device includes a rotary torque sensor for sensing rotary torque of a steering shaft, a first magnet, a first magnetism sensing element, a sensing gear engaged with a rotary gear, a second magnet mounted to the sensing gear, a second magnetism sensing element, and a controller. The rotary torque sensor includes a first rotator and a second rotator either one of which has the rotary gear. The first rotator rigidly adheres to the second rotator via a coupler. The first magnet is mounted to either one of the first rotator or the second rotator. The first magnetism sensing element faces the first magnet, and the second magnetism sensing element faces the second magnet. The controller senses a rotary angle based on signals supplied from the first and the second magnetism sensing elements. | 12-15-2011 |
20120056617 | ROTATION ANGLE DETECTING DEVICE - A rotation angle detecting device includes a rotating body rotating according to rotation of a vehicle pedal; a magnet attached to the rotating body; a magnetism detection element disposed facing the magnet at a predetermined interval from the magnet; and a first control circuit connected to the magnetism detection element. The center of the magnet is placed at the rotation center of the rotating body. The magnetism detection element detects magnetism of the magnet to output a detection signal. The first control circuit outputs an angle signal corresponding to a rotation angle of the rotating body according to the detection signal, and outputs a switching signal according to the rotation angle of the rotating body. The rotation angle detecting device reliably detects a rotation angle and turns a stop lamp on and off for example with a simple structure. | 03-08-2012 |
20130249538 | ROTATION ANGLE AND TORQUE DETECTION DEVICE - A rotation angle and torque detection device includes a first rotating body, a second rotating body, a first magnet, a first magnetism detecting element, a first detecting body, a second magnet, a second magnetism detecting element, a second detecting body, a third magnet, a third magnetism detecting element, and a control circuit. The control circuit outputs a rotation torque signal and a rotation angle signal. The first magnetism detecting element outputs a torque detection signal. | 09-26-2013 |