Class / Patent application number | Description | Number of patent applications / Date published |
060545000 | Having electricity or magnetically operated structure | 80 |
20080229740 | Electrically actuated brake booster - An electrically actuated brake booster capable of obtaining a desired boost ratio for a given input pressure when an electric actuator is activated as a boost source, so as to ensure a desired operability of a brake pedal. The electrically actuated brake booster comprises: an input piston | 09-25-2008 |
20080276611 | Passive Hydraulic Controller With Positional Correction by Means of a Directionally-Controlled Exchange of Oil - A passive hydraulic controller is disclosed, in which the volumes V | 11-13-2008 |
20080295512 | Electrically driven brake booster - The present invention relates to an electrically driven brake booster in which boost control is performed as follows; when an input piston is displaced forward by an input rod upon an operation of a brake pedal, an electric motor is operated according to the input, and a primary piston is displaced forward by a ball-screw mechanism, and then a primary and secondary pressure chamber in a master cylinder main body are pressurized. A first seal and a second seal are disposed at a seal portion between the primary piston and the input piston. A portion between the first seal and the second seal is in communication with an outside through a discharge passage. Brake fluid which leaks from the first seal is sealed off by the second seal, and is discharged to the outside through the discharge passage, whereby it becomes possible to prevent that the electric motor and the ball-screw mechanism otherwise might be corroded by the leaking brake fluid. | 12-04-2008 |
20080302100 | Electric booster and method for manufacturing the same - An object of the present invention is to provide an electric booster and a manufacturing method thereof in which it becomes possible to conduct a test of an electric motor alone without disassembling a motor casing, thereby facilitating the manufacturing process and reducing manufacturing cost. In an electric booster which drives an electric motor | 12-11-2008 |
20090025383 | VEHICLE BRAKE HYDRAULIC PRESSURE CONTROL APPARATUS - A controller | 01-29-2009 |
20090178404 | Electrically driven brake booster and master cylinder - An electric booster according to the present invention comprises a booster piston disposed around an input piston so as to movable relative to the input piston. The booster piston and input piston also serve as a primacy piston of a tandem master cylinder. A brake fluid pressure is generated in the tandem master cylinder by an input thrust force provided from a brake pedal to the input piston and a booster thrust force provided from the electronic actuator to the booster piston. In this electric booster, a slide hole is formed through the secondary piston of the tamed master cylinder in the axial direction therefore, and a rod member is slidably disposed through the slide hole. When the fluid pressure is not increased in the primary pressure chamber, due to the fluid pressure in the secondary pressure chamber, the rod member comes to abut against the input piston, and a reactive force in the secondary pressure chamber is returned to the brake pedal. | 07-16-2009 |
20090199555 | Braking system and automatic brake actuator - A braking system comprising wheel cylinders that brake respective wheels when brake-fluid pressure is applied to the wheel cylinders, a master cylinder that generates brake-fluid pressure in response to a braking action of a driver, and an actuator including a slave cylinder and an electric motor, which is disposed between the master cylinder and the wheel cylinders, and which generates brake-fluid pressure by a forward motion of a piston driven by a driving power of the electric motor. The actuator is activated by an electric signal independent of a braking action of the driver and the actuator is activated only when the wheel cylinders are to be automatically activated without relying on the braking action of the driver. | 08-13-2009 |
20090217659 | ELECTRIC BOOSTER - The present invention relates to an electric booster in which a rotation of an electric motor is converted into a linear motion and transmitted to an output member by a rotation-linear motion mechanism, and the output member pushes a piston of a master cylinder to generate a brake fluid pressure in a pressure chamber in the master cylinder. The present invention is characterized in that an ECU casing containing boards and the like such as a board for controlling the electric motor is coupled to the top of a motor casing constituting the electric motor. The ECU casing is offset in one direction in a plane perpendicular to a plane containing an axis of the master cylinder. A male connector is provided at a side surface of the ECU casing on the opposite side from the offset direction F side, and a space between the male connector and an interference area of the ECU casing with the other components and devices is utilized as a space for attachment/detachment of the male connector to/from the female connector. | 09-03-2009 |
20090241538 | Electronic Device Including Circuit Board with Radiating Member, Hydraulic Unit Including the Electronic Device, and Method of Fixing the Radiating Member to the Circuit Board - An electronic device including a circuit board onto which an electronic part is installed, a radiating member, and at least one fitting member that fixes the radiating member to the circuit board, the fitting member being formed with a resilient portion that is configured to produce a resilient restoring force and holds the radiating member in a state fixed to the circuit board by the resilient restoring force. | 10-01-2009 |
20100089053 | HYBRID ELECTROMECHANICAL/HYDRO-MECHANICAL ACTUATION CONTROL SYSTEM - A hybrid actuation system includes one or more electromechanical actuators, one or more master hydraulic actuators, and a slave hydraulic actuator. Each electromechanical actuator is adapted to be controllably energized and is configured, upon being controllably energized, to supply a drive force. Each master hydraulic actuator is coupled to receive the drive force from an electromechanical actuator and is configured, upon receipt of the drive force, to at least selectively supply pressurized hydraulic fluid. The slave hydraulic actuator is in fluid communication with the master hydraulic actuator to receive pressurized hydraulic fluid therefrom. The slave hydraulic actuator is responsive to pressurized hydraulic fluid supplied from the master hydraulic actuator to move to a control position. | 04-15-2010 |
20100126167 | ELECTROMECHANICAL BRAKE BOOSTER - The invention relates to an electromechanical brake booster for a master brake cylinder of a hydraulic vehicle braking system. The invention provides to configure the brake booster such that it preferably includes a switchable freewheel, which enables an actuation of the master brake cylinder without any movement of the electric motor of the brake booster. The invention further provides to configure the brake booster such that it includes a mechanical gear having a variable transmission ratio, which has a high path transmission at the beginning of an actuation of the master brake cylinder, and a force transmission that rises with increasing actuation. A variable gear ratio is possible using a rack and pinion gear, the toothed rack of which has a soothing with a pitch that changes across the length of the toothed rack. A further possibility of a mechanical gear having a variable ratio is a toggle lever mechanism. | 05-27-2010 |
20100212314 | BRAKE SYSTEM FOR VEHICLE - A brake system for a vehicle including a master cylinder in which a front pressure chamber and a rear pressure chamber are defined by movably supporting an input piston and a pressure piston in a cylinder. A high-pressure supply pipe of an accumulator is coupled to wheel cylinders via hydraulic supply pipes, and coupled to the rear pressure chamber via a hydraulic supply pipe and a second hydraulic pipe. Pressure booster valves and pressure reducing valves are attached to the hydraulic pressure supply pipes, respectively. The wheel cylinder is coupled to the front pressure chamber via the first hydraulic pipe, and a coupling pipe for coupling a first hydraulic pipe and the hydraulic supply pipe is provided with the switching valve. | 08-26-2010 |
20100263367 | BRAKE ACTUATING UNIT - Disclosed herein is a method of determining the brake pedal actuation force exerted by a vehicle driver on an actuating pedal in an electrohydraulic brake system which includes a brake master cylinder and an electromechanically driven booster stage connected upstream of the brake master cylinder. The brake pedal actuation force sought is determined according to the formula F | 10-21-2010 |
20100269500 | DEVICE FOR SUPPLYING PRESSURE TO AN ACTUATION UNIT OF A MOTOR VEHICLE BRAKE SYSTEM AND METHOD FOR CONTROLLING SAID DEVICE - A device for supplying pressure to an actuation unit of a vehicle brake system, in particular to a vehicle brake system of the ‘brake-by-wire’ type, comprising a pneumatic motor-and-pump assembly with a pump and a motor driving the pump, wherein the motor-and-pump assembly is controlled by an electronic control unit depending on a pressure level or pressure difference in a pneumatic brake booster of the actuation unit, with the pressure level in a chamber or a difference in pressure between two chambers of the brake booster being detected by means of a sensor. In order to maintain the availability of the service brake function as high as possible and to obtain a maximum possible redundancy, the control unit, used to control the motor-and-pump assembly comprises a logic module and a power module, which are arranged separately of each other. | 10-28-2010 |
20100275593 | BRAKE SYSTEM - There is provided a brake system that can generate a desired braking force in a nondefective system even if at least a secondary side system of a tandem master cylinder is defective. When the secondary side system is defective, a primary piston (assist member) is moved by a larger amount than an amount of movement of an input piston (input member). Pressure in the nondefective primary side system is increased, and this can compensate for a braking force for two wheels on the primary side, which may be reduced by the defect in the secondary side if no measure is taken, and allows a desired braking force to be generated. Further, the pressure in the primary side system is increased to apply hydraulic pressure reaction to the input piston and an input rod (input member), thereby achieving good pedal feeling. | 11-04-2010 |
20110138802 | ELECTRIC BOOSTER - Provided is an electric booster capable of suppressing a fluctuation in pushing force on a brake pedal. The electric booster includes a first offset spring and a second offset spring, which have a non-linear characteristic increasing with an increase in advancing amount (amount of forward movement of a booster piston with respect to an input piston) as the booster piston of a master cylinder is moved in a pressure-intensifying direction. An electric actuator is controlled (advancement control is performed) so as to increase the advancing amount as the booster piston of the master cylinder is moved in the pressure-intensifying direction to perform a pressure reduction operation associated with regenerative cooperative control at the time of advancement control. Therefore, even when a pressure reduction associated with the regenerative cooperative control is performed at the time of a low hydraulic pressure or a high hydraulic pressure, a reaction force to the pedal can have the same value or approximately the same value before and after the pressure reduction. Specifically, the pressure reduction operation associated with the regenerative cooperative control can be realized without causing a great fluctuation in pushing force on the brake pedal at the time of the low hydraulic pressure or the high hydraulic pressure, and in turn, over a wide range of hydraulic pressure region. | 06-16-2011 |
20110203268 | ELECTRIC BOOSTER - An object of the present invention is to provide an electric booster enabling an easy connection of an ECU and a stator. An ECU casing containing boards and (ECU) is attached to the outer surface of the casing body so as to be located near a stator of an electric motor. The opening of the casing body is closed by a rear cover. A flat-portion through-hole (through-hole) is formed through the casing body. Bus bars connecting the stator and the ECU are disposed through the flat-portion through-hole. The bus bars are disposed such that one ends thereof are coupled with the stator while the other ends thereof protrude from the flat-portion through-hole. When the electric booster is assembled, since the stator and the bus bars are disposed at the casing body having the flat-portion through-hole, it is possible to easily assemble the casing body and the rear cover with the bus bars inserted through the flat-portion through-hole. | 08-25-2011 |
20110259005 | Brake Controller - Provided is a brake controller which can be made smaller. The brake controller ( | 10-27-2011 |
20110314806 | BRAKE DEVICE AND METHOD OF CONTROLLING BRAKE DEVICE - [TASK] It is an object to provide a brake device and a method of controlling the brake device, capable of suppressing an inrush current during a startup period of an electric booster. | 12-29-2011 |
20120023925 | ELECTRIC HYDRAULIC BOOSTER - A braking system with an electric hydraulic booster includes a booster chamber, a booster piston activating chamber, a booster piston located between the booster chamber and the booster activating chamber, and a solenoid valve operably connected to a high pressure source, the booster chamber, and the booster piston activating chamber, the solenoid movable between (i) a first position whereat the booster chamber and the booster piston activating chamber are in fluid communication and fluidly isolated from the high pressure source, (ii) a second position whereat the booster chamber and the booster piston activating chamber are fluidly isolated from each other and from the high pressure source, and (iii) a third position whereat the booster piston activating chamber and the high pressure source are in fluid communication and fluidly isolated from the booster chamber. | 02-02-2012 |
20120042647 | Electromechanical Brake Booster - An electromechanical brake booster is disclosed. The brake booster is constructed with two worm gears which run in opposite directions and whose axial forces compensate one another. The worm gears drive toothed rack gears which convert a rotational driving movement into a translatory output movement for activating a master brake cylinder. As a result of the provision of two gear paths, the loading of each gear path is halved and an application of force to a booster body, which forms a gear output, is symmetrical. | 02-23-2012 |
20120090315 | HYDRAULICALLY ASSISTED HYDRAULIC BRAKING SYSTEM - Electro-hydraulically boosted hydraulic braking system comprising a master cylinder ( | 04-19-2012 |
20120090316 | ELECTRICALLY BOOSTED BRAKING SYSTEM - Braking system comprising a brake booster ( | 04-19-2012 |
20120102941 | ELECTRIC BOOSTER - An electric motor is controlled based on an operation of a brake pedal to move a primary piston forward through a ball screw mechanism, thereby generating a hydraulic pressure in a master cylinder. At this time, a reaction force from the hydraulic pressure in the master cylinder is fed back to the brake pedal through an input piston. Automatic brake control, which generates the hydraulic pressure by driving the electric motor regardless of whether there is the operation of the brake pedal, is carried out. During the automatic brake control, an actual relative position is compared with a determination threshold value set based on the relative position between the primary piston and the input piston which is generated by a movement of the primary piston, and it is determined that the brake pedal is operated in a case where the relative position is smaller than the determination threshold value. | 05-03-2012 |
20120102942 | BRAKE ACTUATION UNIT FOR ACTUATING A MOTOR VEHICLE BRAKE SYSTEM - A brake actuation unit for actuating a motor vehicle brake system of the “Brake-by-wire” type, has a brake booster which can be actuated both by a brake pedal and by an electronic control unit as a function of a driver's request and has a piston rod. A mechanism is provided for decoupling a force-transmitting connection between the brake pedal and a brake booster in the “Brake-by-wire” operating mode. A distance ‘a’ is provided in order to decouple the brake pedal in the “Brake-by-wire” operating mode from reaction forces of the motor vehicle brake system. A securing element, which has a funnel-shaped receptacle oriented in the direction of the piston rod, is attached to the brake pedal to guide an end of the piston rod. | 05-03-2012 |
20120117961 | BRAKE ACTUATOR UNIT FOR ACTUATING A MOTOR VEHICLE BRAKING SYSTEM OF THE "BRAKE-BY-WIRE" TYPE - A brake actuator unit for actuating a motor vehicle braking system of the “brake-by-wire” type, having a brake booster which can be actuated by a brake pedal and by an electronic control unit as a function of a driver's request and has a piston rod, a master brake cylinder arranged downstream of the brake booster, and a pedal travel simulator which interacts with the brake pedal and is arranged in parallel with the piston rod and by which, in the “brake-by-wire” mode, a restoring force acting on the brake pedal can be simulated independently of actuation of the brake booster. In order to decouple a force-transmitting connection between the brake pedal and the brake booster in the “brake-by-wire” mode, a distance ‘a’ is provided between the brake pedal and a component arranged downstream in the force flux and assigned to the brake booster. | 05-17-2012 |
20120137673 | Brake System for Motor Vehicles - A brake system for motor vehicle having a system for reducing brake pedal travel. The system having an electronic control and regulating unit ( | 06-07-2012 |
20120144823 | ELECTRIC MOTOR-DRIVEN BOOSTER - In normal braking, the operation of an electric motor is controlled according to the amount of operation of a brake pedal to drive a pressing member through a belt drive mechanism and a ball-screw mechanism, thereby pressing a piston to generate a fluid pressure in a master cylinder to obtain a braking force. A predetermined reaction force is applied to the brake pedal by a reaction force spring of a stroke simulator, and a gap is maintained between the pressing member and a movable member, thereby eliminating an uncomfortable feeling in a brake operation caused by fluid pressure variations in the master cylinder. When the electric motor fails, the movable member abuts against the pressing member and directly presses the piston to maintain the braking function. The rear end of the pressing member is inserted into a guide member and the reaction force spring to reduce the axial size. | 06-14-2012 |
20120151914 | VEHICLE BRAKE SYSTEM - In a brake-by-wire vehicle brake system using a feedback control unit ( | 06-21-2012 |
20120167564 | BRAKE ACTUATING UNIT FOR ACTUATING A MOTOR VEHICLE BRAKING SYSTEM OF THE "BRAKE-BY-WIRE" TYPE, AND METHOD FOR OPERATING A MOTOR VEHICLE BRAKING SYSTEM BY MEANS OF SUCH A BRAKE ACTUATING UNIT - A brake actuating unit for actuating a motor vehicle braking system of the “brake-by-wire” type having a brake booster. In order to provide a brake actuating unit for actuating a motor vehicle braking system of the “brake-by-wire” type, which on the one hand fulfills the statutory requirements care and which on the other hand is inexpensive to produce, it is proposed according to aspects of the invention, that the brake booster be provided as a travel-controlled brake booster, so that when not in the “brake-by-wire” operating mode the brake pedal is decoupled from feedback forces of the brake actuating unit, and the return force is simulated by the pedal travel simulator even when not in the “brake-by-wire” operating mode. | 07-05-2012 |
20120167565 | BRAKE SYSTEM WITH ELECTRIC SERVO BRAKES - Brake system comprising a thrust rod ( | 07-05-2012 |
20120324882 | ELECTRIC BOOSTER AND BRAKE DEVICE USING THE SAME - [Problem] To provide an electric booster that can mechanically exhibit a jump-in characteristic and hysteresis characteristic without relying on control software. | 12-27-2012 |
20130025273 | ELECTRIC BOOSTER - Provided is an electric booster, including: an input member moved forward and backward by an operation of a brake pedal; a boosting member provided so as to be movable relative to the input member; an electric actuator for driving the boosting member; and a controller for controlling actuation of the electric actuator based on the movement of the input member, in which the controller executes changing control for changing a ratio of a movement amount of the boosting member to a movement amount of the input member to a smaller ratio before an output of the electric actuator increases to come into a full-load state in which the output of the electric actuator becomes equal to a maximum output by the forward movement of the input member. | 01-31-2013 |
20130086901 | METHOD FOR PERFORMING OPEN-LOOP/CLOSED-LOOP CONTROL OF THE BOOSTING OF A BRAKING FORCE OF A BRAKE SYSTEM, BRAKE BOOSTER, AND CONTROL UNIT - The invention relates to a method for controlling/regulating the boosting of a brake force of a brake system ( | 04-11-2013 |
20130186082 | ELECTRIC BOOSTER - An electric booster in which a rotation of an electric motor is converted into linear motion and transmitted to an output member by a rotation-linear motion mechanism. The output member pushes a piston of a master cylinder to generate brake fluid pressure in a pressure chamber in the master cylinder. An ECU casing containing boards is coupled to the top of a motor casing constituting the electric motor. The ECU casing is offset in one direction in a plane perpendicular to a plane containing an axis of the master cylinder. A male connector is provided at a side surface of the ECU casing on the opposite side from the offset direction side, and a space between the male connector and an interference area of the ECU casing is utilized as a space for attachment/detachment of the male connector. | 07-25-2013 |
20130192222 | ELECTRIC BOOSTER - An electric booster includes a housing having one end including a coupling surface where the housing is coupled to a master cylinder, and the other end including an attachment surface where the housing is attached to a vehicle. A controller includes a flat plate-like control board, and the control board is disposed so as to be positioned between a first plane including the attachment surface of the housing where the housing is attached to the vehicle, and a second plane including the coupling surface of the housing where the housing is coupled to the master cylinder. | 08-01-2013 |
20130199174 | Position Sensing Assembly for Use with a Vehicle Hydraulic Master Cylinder of a Vehicle Braking System with Master Cylinder Assembly Including Such a Position Sensing Assembly - A position sensing assembly adapted for use with a master cylinder to measure travel of a piston of the master cylinder via a magnet operatively coupled to the piston thereof for movement therewith between a zero brake apply position and a full brake apply position. According to one embodiment, the position sensing assembly includes a housing adapted to be attached to a master cylinder housing and a flux concentrator operatively disposed with the position sensing assembly housing. The flux concentrator includes a first end, an intermediate body, and a second end. At least one of the first end and the second end defines a longitudinal plane and at least a portion of the intermediate body is oriented at an angle relative to the longitudinal plane whereby the position sensing assembly is adapted to measure the travel of the piston of the master cylinder via the magnet. | 08-08-2013 |
20130232965 | ELECTRIC BRAKE ACTUATOR, AND VEHICLE BRAKE SYSTEM - An electric brake actuator provided with a main reservoir attached to a vehicle frame, a first reservoir attached to an input device and coupled to the main reservoir via a pipe, and a second reservoir coupled to the main reservoir via another pipe and directly mounted to a motor cylinder, wherein the second reservoir is disposed below the main reservoir in the vertical up and down direction. | 09-12-2013 |
20130232966 | VEHICLE BRAKE SYSTEM - An input device of a vehicle brake system integrally includes an integrally provided master cylinder and a stroke simulator which communicate via a hydraulic communication path. The stroke simulator is provided with a simulator piston accommodated within a simulator accommodation chamber. The simulator accommodation chamber has an opening portion enabling the insertion of the simulator piston into the simulator accommodation chamber from the side on which the brake pedal is disposed relative to the dashboard. | 09-12-2013 |
20130232967 | INPUT DEVICE OF VEHICLE BRAKE SYSTEM - An input device of a vehicle brake system which is downsized and has an improved general versatility in comparison with conventional vehicle brake systems is provided. An input device | 09-12-2013 |
20130232968 | VEHICLE BRAKE SYSTEM - There is provided a vehicle brake system to which an electric brake actuator constituting the vehicle brake system is stably attached and in which it is possible to dispose the electric brake actuator in a power plant storage chamber in a space-efficient manner. A vehicle brake system configured by disposing, on a vehicle, an input device to which the brake operation of an operator is inputted and a motor cylinder device for generating brake fluid pressure by driving a hydraulic pressure controlling piston stored in a cylindrical cylinder main body by means of an electric motor at least in accordance with the brake operation, wherein the motor cylinder device is attached in a manner such that at least a portion of the cylinder main body overlaps with a power plant in the vehicle up and down direction; and the electric motor is disposed below the cylinder main body. | 09-12-2013 |
20130239567 | ELECTRIC BRAKE ACTUATOR, AND BRAKE SYSTEM FOR VEHICLE - A motor cylinder device ( | 09-19-2013 |
20130263588 | ELECTRIC MOTOR-DRIVEN BOOSTER - In an electric motor-driven booster, a sharp change of reaction force to an operation of a brake pedal is reduced to improve the brake pedal operation feeling. Operation of the brake pedal causes an input rod ( | 10-10-2013 |
20130291533 | VEHICLE-BODY ATTACHMENT STRUCTURE FOR ELECTRIC BRAKE ACTUATOR - Untreated bosses are formed in advance in two directions on a cylinder mechanism. The bosses on one side are formed as mounts to attach a motor cylinder device to a vehicle body, and the other bosses are formed as ports to connect to the cylinder mechanism. The mount bosses are formed on the outside in the width direction of the vehicle, and the port bosses are formed on the inside in the width direction of the vehicle. | 11-07-2013 |
20130291534 | ELECTRICALLY ACTUATED BOOSTER - An electrically actuated booster performs displacement control such that the relative displacement relationship between an input member and an assist member is variable according to the absolute displacement of the input member. A target displacement that makes variable the relative displacement relationship between an input piston and a booster piston is set according to a detection signal from a potentiometer ( | 11-07-2013 |
20130291535 | ACTUATING DEVICE, METHOD FOR OPERATING AN ACTUATING DEVICE, AND SOLENOID VALVE ARRANGEMENT - The invention relates to an actuating device, in particular for a vehicle brake, wherein hydraulic fluid is supplied to an actuator, in particular a wheel brake, from a piston-cylinder unit via a first hydraulic connection and a solenoid valve. According to the invention, it is provided that a further hydraulic connection connects the piston-cylinder unit to a hydraulic liquid container, and in that a solenoid valve device is arranged in this connection, which solenoid valve has at least two valves which are effective in different flow directions. | 11-07-2013 |
20130298550 | ACTUATING DEVICE FOR A MOTOR VEHICLE BRAKE SYSTEM - The invention relates to an actuating device for a vehicle brake system, comprising a first piston-cylinder unit, the at least one working space of which is to be connected to at least one wheel brake of the vehicle via at least one hydraulic line, further comprising an electromechanical drive device and an actuating device, in particular a brake pedal, and to a method for operating an actuating device for a vehicle brake system. According to the invention, the actuating device comprises a further piston-cylinder unit ( | 11-14-2013 |
20130312405 | VEHICLE BRAKE SYSTEM WITH AN ELECTRIC SERVOMOTOR AND HYDRAULIC REACTION PISTON - A brake system is described with a master cylinder actuated by a control rod connected to a plunger piston and an actuator piston acting directly on the primary piston. A hydraulic reaction piston is housed in the piston so it can be subjected to the pressure of the primary chamber and to the opposing action of a reaction spring. The plunger piston can push the reaction piston directly to push the master cylinder. | 11-28-2013 |
20130318962 | CONTROLLING A FLUID FLOW WITH A MAGNETIC FIELD - A device, system and method for controlling the fluid flow of a process fluid in a tube with a magnetic field. A ferrogel can be included in the tube with the process fluid. A membrane can encapsulate the ferrogel. A mounting support can secure the membrane within the tube, and a magnetic field generator can generate the magnetic field to deform the membrane and the ferrogel from a natural position to a deformed position. | 12-05-2013 |
20130333375 | VEHICLE BRAKE SYSTEM - The following are provided: an input device via which an operator inputs brake operations; a motor cylinder device that generates hydraulic brake pressure on the basis of electric signals based on said brake operations; and a VSA device that assists in stabilizing the behavior of the vehicle on the basis of the aforementioned hydraulic brake pressure generated by the motor cylinder device. Said input device, motor cylinder device, and VSA device are disposed, separated from each other, in an engine compartment partitioned off forwards of a dashboard. | 12-19-2013 |
20130333376 | VEHICLE BRAKE SYSTEM - The purpose of the present invention is to provide a vehicle brake system having a high degree of mounting freedom. The present vehicle brake system is configured in such a manner that an input device into which braking operation of the operator is inputted and a motor cylinder device which generates hydraulic brake pressure on the basis of an electric signal according to at least the braking operation are disposed so as to be separated from each other in the engine room partitioned in front of the dashboard. The vehicle brake system is characterized in that the input device is disposed behind a power device in such a manner that at least a part of the input device overlaps the power device in the front-rear direction. | 12-19-2013 |
20130333377 | ELECTROMECHANICAL BRAKE BOOSTER WITH ADJUSTABLE NON-LINEAR ASSISTANCE FORCE - The present invention relates to an electromechanical brake booster with adjustable non-linear assistance force, comprising a brake booster piston ( | 12-19-2013 |
20130340422 | VEHICLE-BODY ATTACHMENT STRUCTURE FOR ELECTRIC BRAKE ACTUATOR - A structure for attaching a motor cylinder device to the body of the vehicle, said vehicle brake system including: an input device via which an operator inputs brake operations; and a motor cylinder device that generates hydraulic brake pressure on the basis of electrical signals based on said brake operations. Said motor cylinder device has: an electric motor that operates on the basis of electrical signals; a driving-force transmission unit that transmits driving force from the electric motor; and a cylinder mechanism that applies pressure to a brake fluid by moving a piston axially by means of the driving force transmitted by the driving-force transmission unit. A mount for attaching the motor cylinder device to the body of the vehicle is provided near the center of gravity of the motor cylinder device. This makes it possible to minimize displacement of the electric brake actuator when subjected to vibration. | 12-26-2013 |
20140007573 | VEHICLE CONTROL DEVICE - A vehicle control device, that controls to suppress a driving force of a vehicle based on an operation of a brake pedal operated when a braking force is generated by a braking device, wherein the brake pedal is connected to a brake booster, that increases an operating force input to the brake pedal by using a brake negative pressure to transmit to brake fluid of the braking device in order to appropriately control by appropriately detecting the operation of the brake pedal; and the driving force is suppressed according to an M/C pressure when the brake negative pressure is higher than a brake negative pressure threshold value, and the driving force is suppressed according to an operation state of the brake pedal when the brake negative pressure is equal to or lower than the brake negative pressure threshold value. | 01-09-2014 |
20140020378 | VEHICLE BRAKING FORCE GENERATOR - The object of the present invention is to provide a vehicle braking force generator capable of detecting a lock failure quickly. A vehicle braking force generator includes a motor cylinder device that generates a brake hydraulic pressure according to an operation amount of a brake pedal, a motor current obtaining unit that obtains a torque current according to an electric motor, a brake hydraulic pressure obtaining unit that obtains a brake hydraulic pressure generated in a cylinder unit, a movement amount obtaining unit that obtains a movement amount of pistons to a compression direction of a brake fluid relative to the cylinder unit, and a determination unit that determines an operation state of the motor cylinder device. | 01-23-2014 |
20140026557 | ELECTRIC BRAKE DEVICE - An electric brake device includes a first slave piston which is housed in a cylinder body and generates hydraulic pressure in a first hydraulic chamber by moving forward, a motor which transmits a driving force to the first slave piston, and a restriction pin which is inserted and secured to the cylinder body in a direction perpendicular to an axial direction of the cylinder body and restricts a backward position of the first slave piston when a hydraulic pressure is applied from an outside to the first hydraulic chamber, wherein the restriction pin is inserted and secured to the cylinder mechanism in the direction perpendicular to the axial direction of the cylinder main body. Further, a clearance is formed between an inner peripheral wall of the cylinder body and a first groove portion and second groove portion which are formed on an outer surface of the restriction pin. | 01-30-2014 |
20140041378 | BRAKE ASSIST DEVICE AND MOTOR VEHICLE COMPRISING SUCH A DEVICE - A brake-assist device for a motor vehicle having a servomotor is described. A servomotor has a plunger piston, a moving part, and an arrangement to move the moving part into position with respect to the plunger piston. The servomotor is actuated by a control rod. The control rod has a first end that presses upon the plunger piston and a second end to receive a force exerted by a brake pedal intended to be moved by a driver of the vehicle. The servomotor includes a sensor interposed in a contact space between the plunger piston and the moving part. A spring is compressed between the plunger piston and the moving part. The servomotor includes an arrangement for displacing the plunger piston in the contact space based on the driving mode. A stiffness of the spring is sufficiently high for an onset of braking to occur only with a striking force that is significantly higher during a reactive driving mode than it is during a calm driving mode. | 02-13-2014 |
20140053545 | Electric Brake Control Apparatus - It is an object to reduce noise leakage out of an apparatus, and improve reliability of an electric brake control apparatus. An electric brake control apparatus includes: a motor that includes a housing made of a conductive member; a control unit that performs drive control of the motor; and a hydraulic unit that includes a housing made of a conductive member, and further includes a conductive connection member that electrically connects a ground line of the control unit, the housing of the motor and the housing of the hydraulic unit to each other. | 02-27-2014 |
20140060038 | MOTOR CONTROL DEVICE AND VEHICLE BRAKE HYDRAULIC PRESSURE CONTROL APPARATUS - A motor control device (a motor driver) for controlling, by a duty control, a current supplied to a motor includes a driving controller, an off controller, and a voltage acquiring section (an A/D conversion processor, a sampling section). The driving controller performs on/off control of the current supplied to the motor with a first period. The off controller performs off control for the motor with a second period separately from the on/off control performed by the driving controller. The second period is longer than the first period. The voltage acquiring section acquires a voltage between terminals of the motor during a time period in which the off control is performed by the off controller. | 03-06-2014 |
20140090371 | ELECTRIC MOTOR-DRIVEN BOOSTER - An electric motor is controlled according to an operation of a brake pedal connected to an input rod to drive a ball-screw mechanism through a transmission mechanism, thereby propelling a primary piston and a subpiston to generate brake hydraulic pressure in a master cylinder. The brake hydraulic pressure in the master cylinder is received with an input piston and transmitted to the brake pedal through a plunger rod and the input rod. The input rod and the plunger rod are tiltably connected, through a ball joint, and the plunger rod is axially slidably guided by a guide part of a rear cover. Thus, a lateral force acting on the primary piston or the subpiston is reduced to prevent an increase in sliding resistance and degradation of sealing performance. | 04-03-2014 |
20140137551 | SAFETY APPARATUS FOR BRAKE OF VEHICLE - The safety apparatus for a brake of a vehicle includes a first line and a second line. The first line includes an exhaust manifold, an engine, an intake manifold, a check valve, a vacuum hose, a vacuum switch, a booster, a check valve, a vacuum hose, a negative connection portion, a vacuum switch and a brake booster, and the second line includes a vacuum hose, a check valve, a booster, a check value, a vacuum hose and a vacuum pump, which are connected to the negative connection portion. The apparatus can isolate a supply of electric power to a fuel motor to stop starting of the engine when the brake booster lacks a vacuum because of a deterioration of a performance of an auxiliary vacuum pump, and enable the brake to normally operate so as to prevent an accident even though a sudden acceleration occurs or the engine suddenly stops. | 05-22-2014 |
20140174072 | BRAKE CONTROL DEVICE FOR A VEHICLE - A brake control device for a vehicle has a master cylinder that converts an operating force of a brake pedal to a fluid pressure, a wheel cylinder installed in each wheel of the vehicle that generates a braking force by a fluid pressure introduced in each wheel, an introduction section that introduces the fluid pressure generated by the master cylinder, a first switching valve disposed in a fluid passage connecting the master cylinder and the wheel cylinder, and closes at system startup and opens at system non-startup/failure, a second switching valve disposed in a branch fluid passage connecting the master cylinder and the introduction section and opens at the system startup and closes at the system non-startup/failure, and a brake controller. When the system is started after the depression operation of the brake pedal, the brake controller closes the second switching valve. | 06-26-2014 |
20140208737 | MECHANICAL-HYDRAULIC BRAKE BOOSTER HAVING AN EXPANSION FOR AUTONOMOUS BRAKING - A brake booster for a vehicle, including: a cylinder housing having a center bore for receiving a user-operated push-rod piston for building up a fluid pressure inside of the cylinder housing in response to actuation of the push-rod piston, a first fluid line being in fluid communication with an axial recess in the cylinder housing, and a second fluid line being in fluid communication with the center bore in a cylinder housing region, the first and second fluid lines each being connected to a fluid reservoir at their respective other ends; a third fluid line, which interconnects the first and second fluid lines in a fluid manner; a first electrically and/or hydraulically and/or mechanically operable valve, which is situated in the third fluid line; a second electrically and/or hydraulically and/or mechanically operable valve, which is situated in the second fluid line, namely, in back of a fluid connection of the third fluid line to the second fluid line, when viewed in the direction of the fluid reservoir; and a build-up of fluid pressure being able to be generated autonomously with the aid of the first valve, when the second valve interrupts a fluid stream in the second fluid line. | 07-31-2014 |
20140250882 | HYDRAULIC BRAKE BOOSTER - A hydraulic brake booster includes: a piston housing; and a first piston and a second piston displaceably spaced apart from each other inside the piston housing in a longitudinal direction and sealed from an inner wall of the piston housing, the first piston being fixedly coupled to a pressure piston rod so that in an actuation the first piston exerts a fluid pressure on a first volume by way of one surface, and the second piston exerts the fluid pressure on a second volume by way of one surface. In the case of a failure of the brake booster, the first volume is connected with a variable volume situated between an annular surface of the first piston and an inner surface of the piston housing, so that when the pressure piston rod is actuated, a pressure equilibrium forms between the first volume and the variable volume. | 09-11-2014 |
20140283513 | Brake Control Apparatus - A brake control apparatus includes a master cylinder configured to generate a brake pressure according to a depressing force of a brake pedal; an electric motor configured to operate the master cylinder; a control board configured to control the electric motor; and a board receiving portion arranged along an outer circumference of the master cylinder. The board receiving portion receives the control board such that a component-mounting surface of the control board faces in an axial direction of the master cylinder. | 09-25-2014 |
20140331666 | ELECTRIC BRAKE BOOSTER - An electric brake booster for a vehicle brake system includes a push bar configured to be driven by a brake pedal to move forwards in an axial direction; a brake force outputting element configured to be pushed forwards by the push bar to output a brake force from the brake pedal; a booster force outputting element for outputting a booster force; a motor for driving the booster force outputting element to create the booster force; a poppet configured to be pushed forwards in the axial direction by the push bar with a spring force, wherein the poppet forms a boost switch, through which an electrical current can pass, with the brake force outputting element and forms a release switch, through which another electrical current can pass, with the booster force outputting element; and an electronic control unit for controlling the operation of the motor in responsive to the on-off states of the boost switch and the release switch. The electric brake booster is independent of the vacuum degree of the inlet pipe of the vehicle engine and can provide active and precise control to the actions of the booster. | 11-13-2014 |
20140373526 | ELECTRIC BRAKE DEVICE - An electric brake device, in which the rotational drive force of an electric motor ( | 12-25-2014 |
20150027113 | METHOD FOR OPERATING A HYDRAULIC SYSTEM AND BRAKE SYSTEM - A method for operating a hydraulic system with a plurality of consumers an electrically controllable pressure supply device and an electrically actuable inlet valve, per consumer, which inlet valve is arranged between the pressure supply device and the consumer, wherein a pressure/volume relationship is predefined or determined for each consumer, wherein each consumer is assigned to a first group or a second group of consumers, wherein the first group of consumers includes at least one consumer, and wherein, in order to set predefined consumer-specific setpoint pressures, the first group of consumers is connected via the respectively opened inlet valve to the pressure supply device, and the inlet valves of the consumers of the second group are closed, wherein the inlet valve of a single, selected consumer of the second group is opened while being regulated to build up a pressure, and a brake system for motor vehicles. | 01-29-2015 |
20150040557 | STROKE SIMULATOR - Provided is a stroke simulator capable of suppressing occurrence of inclination of a piston with respect to a sliding surface formed in a cylinder. The stroke simulator includes a simulator piston which is displaced by sliding on a sliding surface formed in a first cylinder, and a first return spring which is housed in the first cylinder and applies, to the simulator piston, a reaction force which is generated by an elastic deformation of the spring under a pressing force due to a displacement of the simulator piston, and generates the reaction force which is applied to the simulator piston as a brake reaction force for a brake operating element. The stroke simulator is characterized in that a cup seal for sealing a gap formed between the sliding surface and the simulator piston is mounted in the middle in the axial direction of the sliding surface. | 02-12-2015 |
20150059334 | BRAKE HYDRAULIC DEVICE FOR VEHICLE - Provided is a brake hydraulic device for a vehicle, including: a base body having a hydraulic pressure path for brake fluid formed therein; an electromagnetic valve; an electromagnetic coil; a pressure sensor; and a housing attached to the outer surface of the base body. The housing includes a peripheral wall part and an intermediate wall part partitioning a space inside the peripheral wall part into a front side and a rear side. A plurality of bus bars on the coil side to be electrically connected to the electromagnetic coil, and a plurality of bus bars on the sensor side to be electrically connected to the pressure sensor are embedded in the intermediate wall part. A hierarchy region where the bus bars on the coil side and the bus bars on the sensor side are positioned in a hierarchy state with each other in the front-rear direction is provided. | 03-05-2015 |
20150075156 | Brake Control Apparatus - Disclosed is a brake control apparatus including a master cylinder that generates a hydraulic braking pressure in response to operation of a brake pedal, an electric motor that drives the master cylinder, a housing in which the master cylinder and the electric motor are assembled, and a control unit adapted to perform drive control of the electric motor. The control unit has a bottom formed at least partially integral with the housing and includes a circuit board mounting thereon drive elements to drive the electric motor. The brake control apparatus includes a heat radiating seat located on an inner surface of the bottom of the control unit at a position apart from the electric motor and closer to the master cylinder than the electric motor and brought into thermal contact with the circuit board so as to radiate heat of the drive elements toward the housing. | 03-19-2015 |
20150107241 | HYDRAULIC BRAKE SYSTEM - A hydraulic brake system is configured such that a pressure of a working fluid from a high-pressure-source device is adjusted by electromagnetic pressure-increase and pressure-decrease linear valves and such that a brake device generates a braking force having a magnitude that depends on the pressure adjusted by the linear valves, wherein the following controls are selectively executable, as a control of the energizing currents supplied to the linear valves, a feedback control based on a difference between an actual braking-force index and a target braking-force index; and a feedforward control based on the target braking-force index executed by placing each valve in a valve equilibrium state, wherein, in the feedforward control, an energizing current is supplied to at least one of the two linear valves, the energizing current being larger than that according to a preset relationship between a braking-force index and an energizing current in the valve equilibrium state. | 04-23-2015 |
20150113976 | ACTUATOR DEVICE AND METHOD FOR SETTING A POSITION OF A LINEARLY MOVABLE ELEMENT - An actuator device for producing a linear movement, has a hydraulic actuator which includes a first piston element for actuating the actuator and a second piston element for producing the linear movement. The piston elements are assigned respective fluidically coupled working chambers, the volumes of which can be changed by movement of the respective piston element. A piezoelectric actuator is provided for exerting a force on the first piston element. | 04-30-2015 |
20150314762 | BRAKE MASTER CYLINDER - Disclosed is a brake master cylinder. The brake cylinder include a cylinder body, a first piston and a second piston that are provided in the cylinder body so as to perform a reciprocating motion, and a hall sensor installed outside the cylinder body and configured to sense operations of the first and second pistons to control on/off of a brake lamp. The brake master cylinder is provided with a magnet installed on the first piston, and a rotation preventing member configured to limit rotation of the first piston, wherein as rotation of the first piston is limited, the magnet is installed at a portion of the first piston that faces the hall sensor. | 11-05-2015 |
20150360654 | BRAKE CONTROL DEVICE - The brake control device applied to a hydraulic pressure braking force generating device having a driving hydraulic pressure generating device and a pilot hydraulic pressure generating device. The brake control device includes a judging portion which judges whether or not an operating amount of a brake operating member is equal to or less than a predetermined value and a pilot hydraulic pressure control portion which controls the pilot hydraulic pressure generating device to generate a preparatory hydraulic pressure in the pilot hydraulic pressure chamber which is larger than an atmospheric pressure set to a value so that a hydraulic pressure in the wheel cylinder is kept substantially to an atmospheric pressure level when the judging portion judges that the operating amount of the brake operating member is equal to or less than the predetermined value to suppress occurrence of brake dragging during non-braking operation with keeping the braking force responsiveness. | 12-17-2015 |
20150360666 | ELECTROMECHANICAL BRAKE BOOSTER AND METHOD FOR OPERATING AN ELECTROMECHANICAL BRAKE BOOSTER - An electromechanical brake booster is provided for a braking system of a vehicle, having a valve body and an input rod, the valve body, to which at a displacement motion in a brake application direction has been imparted, being displaceable up to a differential travel equal to a limit differential travel with reference to the input rod, and then a co-displacement motion in the brake application direction being impartable to the input rod if the co-displacement motion is acted against at most by a retention force below a predefined threshold value, and at least one buffer element being disposed on the input rod and/or on the valve body in such a way that if a retention force above the predefined threshold value acts against the co-displacement motion, the differential travel is increasable above the limit differential travel by way of a deformation of the at least one buffer element. | 12-17-2015 |
20160068146 | ELECTRIC BOOSTER - An electric motor is controlled according to the back and forth movement of an input rod, which is caused by brake pedal operation; a primary piston is propelled to generate hydraulic brake pressure in a master cylinder; and the hydraulic brake pressure is fed back to the input rod through an input piston. The input piston is resiliency held by springs with respect to the primary piston. A jump-in clearance is created between the input piston and the input rod by a rearward spring. At the initial stage of braking, hydraulic brake pressure is not transmitted to the input rod due to the jump-in clearance, which provides jump-in characteristics. The jump-in clearance can be set, regardless of the amount of a relative displacement between the primary piston and the input piston, so that the range of adjustment for regenerative braking can be set larger than the jump-in clearance. | 03-10-2016 |
20160108939 | HYDRAULIC DRIVE FOR A PRESSURE BOOSTER - Hydraulic drive for pressure booster of a high-pressure apparatus, having an electric servo drive effectively connected to electrical supply operable to be regulated and/or switched by measurement signals; a hydraulic pump, pumping a constant volume of working fluid per revolution, and driven by the electric servo drive, and measuring devices for a pressure and/or a pressure trend of the working fluid and/or a pressure and/or a pressure trend of the high-pressure fluid and/or for a position of a piston in the pressure booster. Servo drive is embodied bidirectionally, such that an application of working fluid to the pressure booster is reversible. Control of regulating and/or switching parameters of the electrical supply of the servo drive is based on signals from the measuring devices for the pressure and/or the pressure trend of the working fluid and/or the high-pressure fluid and/or for the position of the piston in the pressure booster. | 04-21-2016 |
20160200306 | METHOD FOR OPERATING A BRAKE BOOSTER, CONTROL DEVICE FOR CARRYING OUT THE METHOD, AND A BRAKE SYSTEM COMPRISING THE BRAKE BOOSTER AND THE CONTROL DEVICE | 07-14-2016 |
20190145432 | HYDRAULIC ACTUATOR, ROBOT ARM, ROBOT HAND AND OPERATING METHOD | 05-16-2019 |