ADVICS Co

Toyota, Japan

ADVICS Co

Toyota, Japan
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Patent
Advics Co. | Date: 2015-07-14

This hydraulic braking device is provided with: a tubular cylinder; an assisting piston, which is housed in the cylinder so as to be able to move reciprocally, faces a reservoir formed inside the cylinder, and assists a master piston, in a master cylinder, that generates hydraulic pressure for generating a braking force by reciprocally moving from one side to the other as a result of a fluid flowing into the reservoir from a supply source; and a seal member, which is elastically deformable and which seals the reservoir. When the assisting piston is at a location on one side, the reservoir is compartmentalized into a first chamber that communicates with the supply source, and a second chamber that communicates with the first chamber through a restricting flow passage, and the seal member seals the second chamber.


Patent
Advics Co. | Date: 2017-08-30

A traveling control apparatus according to the present invention is provided with: an operation amount calculating unit for calculating the amount of operations for controlling at least one of a driving mechanism and a brake mechanism of a vehicle so as to make the difference between a target position and the actual position of the vehicle small, for example; a determining unit for determining whether the actual position follows the target position; and a target position setting unit for setting the target position that changes with the passage of time, when it is determined by the determining unit that the actual position follows the target position, and for setting the target position (time t1 -t2) such that a change in the target position with the passage of time becomes smaller than that in the case where it is determined that the actual position follows the target position, when it is determined by the determining unit that the actual position does not follow the target position (time t1).


Patent
Toyota Motor Corporation and Advics Co. | Date: 2017-01-11

An air detector detects the presence or absence of air in a hydraulic braking system including a rearward-hydraulic-pressure controller 28 connected to a rearward chamber 66 located behind a pressurizing piston 34 in a master cylinder 26. When an instruction for detecting the presence or absence of air is output, a hydraulic pressure is accumulated in an accumulator 108 at S1. Pressure holding valves 170 are closed at S2. The presence or absence of air in an upstream portion 180 including the rearward-hydraulic-pressure controller 28 is detected at S3 based on a relationship between a servo pressure and a time of controlling an input chamber 122. The pressure holding valves 170 are opened at S6. The presence or absence of air of a downstream portion 182 including a pressure chamber 42 is detected at S7 based on a relationship between a stroke of a brake pedal 24 and the servo pressure. With these processings, the presence or absence of air is detected for the upstream portion and the downstream portion, separately. Thus, when air is detected, it is possible to identify a portion at which the air exists.


Patent
Advics Co. | Date: 2015-08-06

Electric parking brake devices are configured such that a parking lever is driven by an electric actuator. The electric actuator is provided with: an electric motor drivable in a forward/reverse direction and operationally controlled by a motor control unit according to rotational loads; a conversion mechanism capable of converting a rotational motion into a linear motion, moving the parking lever from a return position toward an operating position through forward rotation of the electric motor, and moving the parking lever from the operating position toward the return position through the reverse rotation of the electric motor; and a load applying mechanism (a stopper and a disc spring assembly) for applying a predetermined rotational load to the electric motor by driving a constituent member of the conversion mechanism after the parking lever is moved from the operating position to the return position through the reverse rotation of the electric motor.


Patent
Advics Co. | Date: 2017-06-28

Electric parking brake devices are configured such that a parking lever (17) is driven by an electric actuator (20). The electric actuator (20) according to the present invention is provided with: an electric motor (21) which can be driven in a forward/reverse direction and of which operation is controlled by a motor control unit (ECU) according to rotational loads; a conversion mechanism (22) capable of converting a rotational motion into a linear motion, moving the parking lever (17) from a return position toward an operating position through the forward rotation of the electric motor (21), and moving the parking lever (17) from the operating position toward the return position through the reverse rotation of the electric motor (21); and a load applying mechanism (a stopper (27) and a disc spring assembly (28)) for applying a predetermined rotational load to the electric motor (21) by driving a constituent member of the conversion mechanism (22) after the parking lever (17) is moved from the operating position to the return position through the reverse rotation of the electric motor (21).


Patent
Advics Co. | Date: 2015-05-29

The present invention addresses the problem of standardizing a front shell of a booster shell of a negative pressure-type booster device by modifying the shape of a reinforcement rib provided to the front shell so as to satisfy the demand for varying the installation pitch and installation angle of tie-rod holes with one and the same front shell. A front shell configuring a booster shell of a negative pressure-type booster device in combination with a rear shell includes a reinforcement rib formed by bending the shells, wherein the reinforcement rib is formed along a virtual ellipse of which the center is located at the center of the front shell, with the major axes of the ellipse disposed on a line connecting the centers of two tie-rod holes provided in the front shell.


Patent
Advics Co. | Date: 2017-02-01

A vehicle brake control device includes an electric motor controlled based on a target energization amount calculated based on an operation amount (Bpa) of a braking operation member. Based on the operation amount (Bpa), it is determined whether or not an inertia compensation control for compensating for the influence of the inertia of a brake actuator is necessary. When the inertia compensation control is determined to be necessary, an inertia compensation energization amount for compensating for the influence of the inertia of the brake actuator is calculated based on a time-series pattern set in advance based on the maximum response of the brake actuator. Based on the inertia compensation energization amount, the target energization amount is calculated. The vehicle brake control device is thus able to generate a braking torque that appropriately compensates for the influence of the inertia of the entire device including the inertia of the electric motor.


Patent
Advics Co. | Date: 2015-06-29

A vehicle brake device is provided with: an acquisition unit that acquires travel resistance force produced between a vehicle wheel and a road surface touched by the wheel when, for example, a vehicle having the wheel travels, on the basis of driving force of the vehicle and acceleration of the vehicle; and a control unit that starts a control for supplying braking force to the wheel of the vehicle when a difference between the travel resistance force and a predetermined value exceeds a first threshold value and a differential value of the travel resistance force exceeds a second threshold value.


Patent
Advics Co. | Date: 2015-03-31

This brake ECU executes vehicle downhill control for adjusting the braking force to be applied to a vehicle by actuating a brake actuator such that the vehicle body speed does not exceed a target speed. Also, in cases where the accelerator pedal is being operated in a state where the vehicle downhill control is being executed, the brake ECU changes the target speed such that, the longer the operation duration which is the duration for which the accelerator is operated, the higher the target speed.


Patent
Advics Co. and Toyota Motor Corporation | Date: 2015-01-08

A vehicle brake device includes a pressure adjusting device wherein as the volume of a pilot chamber is changed by the movement of a piston and the flow rate of liquid flowing in and out of the pilot chamber increases, the amount of movement of the piston increases with reference to the piston position in an equilibrium state where the force corresponding to the pilot pressure and the force corresponding to the output pressure are balanced, whereby the flow rate of the liquid flowing in and out of an output chamber increases. A control device, when judged by a limitation necessity judging portion that the gradient of output pressure should be limited, implements at least one of pressure increasing gradient limit control for opening a pressure decreasing electromagnetic valve under pressure increasing control, or pressure decreasing gradient limit control for opening a pressure increasing electromagnetic valve under pressure decreasing control.

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