Patent application number | Description | Published |
20110199081 | BARKHAUSEN NOISE INSPECTION APPARATUS AND INSPECTION METHOD - A Barkhausen noise inspection device of the present invention includes a detecting head ( | 08-18-2011 |
20140262634 | ELECTRIC LINEAR MOTION ACTUATOR AND ELECTRIC BRAKE SYSTEM - An electric linear motion actuator is provided which can set the clearance during normal braking operation of an electric brake system. The linear motion actuator includes a load sensor for detecting the magnitude of the load with which a friction pad is pressed against the brake disk, a temperature sensor for compensating for the influence of temperature on the load sensor, and an electronic control unit. The electronic control unit is adapted to calculate a target rotational angle from the position of the electric motor corresponding to the magnitude of the load detected by the load sensor to the position of the electric motor where the clearance is at a predetermined value, and control the electric motor to rotate the electric motor by the target rotational angle. | 09-18-2014 |
20140283635 | MAGNETIC LOAD SENSOR UNIT FOR USE IN A LINEAR MOTION ACTUATOR, AND LINEAR MOTION ACTUATOR - A magnetic load sensor unit for use in a linear motion actuator is provided which is less likely to suffer from hysteresis errors during use while being mounted in the linear motion actuator, and which can reduce the axial length of the linear motion actuator. The magnetic load sensor unit is configured to detect the magnitude of an axial load applied to an object from the linear motion actuator. The sensor unit includes a flange member configured to be deflected when a reaction force to the axial load is received through a thrust bearing, a magnetic target which generates magnetic fields; and a magnetic sensor arranged such that its position relative to the magnetic target changes when the flange member is deflected. The flange member has an axial end surface in which a groove is formed with which rolling elements of the thrust bearing are in rolling contact. | 09-25-2014 |
20140290402 | ELECTRIC LINEAR MOTION ACTUATOR - An electric linear motion actuator capable of accurately controlling the axial position of an outer ring member is provided. A plurality of planetary rollers are kept in rolling contact with the cylindrical surface formed on the outer periphery of a rotary shaft. Helical ribs formed on the inner periphery of the outer ring member are engaged in circumferential grooves formed on the outer periphery of each of the planetary rollers. A carrier retains the plurality of planetary rollers. A revolution sensor detects the rotation angle of the carrier. | 10-02-2014 |
20150041261 | ELECTRIC PARKING BRAKE - A parking brake is provided having the function of monitoring malfunction of the brake, thereby preventing accidents. The parking brake includes an electric motor ( | 02-12-2015 |
20150204736 | MAGNETIC LOAD SENSOR UNIT AND ELECTRIC BRAKE SYSTEM - A load sensor unit is provided which is less likely to suffer from hysteresis errors. The magnetic load sensor unit includes a flange member, a support member supporting the flange member from the axially rearward side, a magnetic target fixed to the flange member, a magnetic sensor fixed to the support member. The magnitude of the load is detected based on the magnetic flux detected by the magnetic sensor. A load acting surface of the flange member to which the load is applied is formed at a position offset axially rearwardly relative to an axially forward surface of the flange member. | 07-23-2015 |
20150246662 | ELECTRIC PARKING BRAKE SYSTEM - An electric parking brake system includes an electric motor; a linear motion mechanism that converts the rotational movement of a rotor shaft of the electric motor to a linear movement of a slide member to operate a brake; a locking mechanism that fixes a position of the slide member; a control device that controls the electric motor and the locking mechanism; a brake load estimation unit that estimates a brake force; and an electric parking brake operation instruction device that is arbitrary operable. The control device automatically executes a parking brake operation when a stop state of the vehicle is detected even if the electric parking brake operation instruction device is not operated. The automatically applied parking brake force is set to a value smaller than the normal parking brake force applied by the parking brake operation instruction device. | 09-03-2015 |
20150316933 | ELECTRIC LINEAR MOTION ACTUATOR - An electric linear motion actuator includes an electric motor, a motion converting mechanism that converts the rotational motion of the electric motor into a linear motion of a linear moving member, a load sensor that detects the magnitude of the load applied to the brake disk from the linear moving member, and a controller that performs feedback control on the electric motor based on the difference between the load detected by the load sensor and a load command value. The controller reduces the number of revolutions of the electric motor when the linear moving member moves into a predetermined zone immediately before the position where the clearance between the linear moving member and the brake disk becomes zero. | 11-05-2015 |