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公开(公告)号：US20220203944A1
公开(公告)日：2022-06-30
申请号：US17595266
申请日：2020-05-18
Applicant: ADVICS CO., LTD.
Inventor： Osayoshi KATO , Yoshio MASUDA
Abstract: A brake control device includes a brake operation member, a pressurization unit, a master cylinder unit, a connection path connecting a separation chamber and a reaction force chamber, an electromagnetic valve at the connection path, and a control device. The control device includes a specified control section configured to, when the brake operation member is operated in a closed state of the electromagnetic valve, execute activation-time control in which the pressurization unit supplies fluid to a servo chamber based on a predetermined pattern, a determination section configured to determine whether a pressure difference between pressure in the reaction force chamber and pressure in the separation chamber, is equal to or less than a threshold value, and a valve control section configured to open the electromagnetic valve when the determination section determines the pressure difference is equal to or less than the threshold value after start of the activation-time control.
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公开(公告)号：US20220177030A1
公开(公告)日：2022-06-09
申请号：US17436842
申请日：2020-03-03
Applicant: ADVICS CO., LTD.
Inventor： Yosuke HASHIMOTO
Abstract: A travel control device includes a turning control unit configured to execute turning support control causing a turning state quantity to follow a target turning state quantity by causing at least one of a front wheel steered angle adjustment device, a rear wheel steered angle adjustment device, and a braking device to be driven, and a steering instruction unit configured to, when steering is not being performed during the execution of turning support control, derive a holding torque and instruct a steering device to apply the holding torque to a steering wheel. The turning control unit causes the rear wheel steered angle adjustment device and/or the braking device to be driven but causes the front wheel steered angle adjustment device not to be driven when steering is not being performed. The turning control unit causes the front wheel steered angle adjustment device to be driven when steering is being performed.
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公开(公告)号：US20220176963A1
公开(公告)日：2022-06-09
申请号：US17442007
申请日：2020-03-03
Applicant: ADVICS CO., LTD.
Inventor： Sotaro MURAMATSU , Yosuke HASHIMOTO
IPC: B60W30/18 , B60W10/06 , B60W10/184
Abstract: A stop control device which is a control device includes a gradient acquisition unit that acquires a road surface gradient; a drive instruction unit that executes a stopping drive instruction process for instructing a drive device to set a driving force of the vehicle to a magnitude corresponding to the road surface gradient when stopping the vehicle on a climbing road; and a braking instruction unit that executes a stopping braking instruction process of stopping the vehicle by instructing a braking device to apply a braking force corresponding to a required acceleration to the vehicle when stopping the vehicle on the climbing road.
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公开(公告)号：US11353018B2
公开(公告)日：2022-06-07
申请号：US17054583
申请日：2019-05-24
Applicant: ADVICS CO., LTD.
Inventor： Tomokazu Aono , Tomoo Harada
Abstract: In a piston pump, for example, a piston sub assembly includes a columnar plunger that lies along an axial direction, a cap that is fixed with the plunger to cover an adjacent region between a first end surface at one end in the axial direction of the plunger and the first end surface at a first outer circumferential surface of the plunger, and provided with an intake passage extending from an inlet on an outer side of the first outer circumferential surface to an outlet on an outer side of the first end surface outside the plunger, and a first valve seat of a first intake check valve located at the outlet, and a seal member that is a member different from the cap and that prevents leakage of hydraulic fluid from the first chamber through a gap between the first cylinder and the piston sub assembly.
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公开(公告)号：US20220169251A1
公开(公告)日：2022-06-02
申请号：US17441995
申请日：2020-03-30
Applicant: ADVICS CO., LTD.
Inventor： Sotaro MURAMATSU , Yosuke HASHIMOTO
IPC: B60W30/18 , B60W10/04 , B60W10/184
Abstract: An orientation control device serving as a control device includes: an orientation control unit configured to, in a case where a vehicle is stopped on a slope road by applying braking force to a front wheel and a rear wheel, instruct a braking device to decrease front wheel braking force and rear wheel braking force and execute orientation control for instructing a drive device to increase drive force of the vehicle in a range in which a stop state of the vehicle is maintained; and a braking increase instruction unit configured to execute braking increase control for instructing the braking device to increase the braking force of at least one of the front wheel and the rear wheel after the increase in the drive force of the vehicle in accordance with the execution of the orientation control is ended.
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Patent Agency Ranking
公开(公告)号：US20220161769A1
公开(公告)日：2022-05-26
申请号：US17439672
申请日：2020-03-03
Applicant: ADVICS CO., LTD.
Inventor： Sotaro MURAMATSU , Yosuke HASHIMOTO
IPC: B60T7/22 , B60T8/172 , B60T8/1761
Abstract: Braking torque is automatically applied based on requested deceleration and requested distance from a driving assistance device. Standard deceleration decreases in an “upwardly curved” form and then decreases in a “downwardly curved” form over time in a standard deceleration profile, and a standard speed profile corresponds to the standard deceleration profile. In the present calculation period, target deceleration and target speed profiles are set by adjusting the standard deceleration/standard speed profiles to satisfy the relationship between deceleration and vehicle body speed. The estimated distance from the reference speed to the vehicle stop is calculated based on the target speed profile. In a condition that the estimated distance is equal to/less than the requested distance is denied, braking torque is adjusted based on requested deceleration. After first satisfying the condition that the estimated distance is equal to/less than the requested distance, braking torque is adjusted according to the target deceleration profile.
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公开(公告)号：US11333211B2
公开(公告)日：2022-05-17
申请号：US16981198
申请日：2019-03-28
Applicant: ADVICS CO., LTD.
Inventor： Yohei Komizo , Jin Yamada
IPC: F16D65/28 , F16D65/22 , B60T13/74 , F16D121/24 , F16D125/40
Abstract: A motion conversion mechanism of a brake device includes a rotation member and a linear motion member that linearly moves accompanying the rotation of the rotation member. The rotation member is rotationally driven through a third gear. A male screw and a female screw mesh with each other on the side opposite to the brake shoe of the third gear, where one end of an actuating member receives a force for actuating the brake shoe from the linear motion member, and the other end actuates the brake shoe. The guide member that guides the actuating member is made of a material different from that of the rotation member, and slidably guides the actuating member in the axial direction.
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公开(公告)号：US20220144229A1
公开(公告)日：2022-05-12
申请号：US17418600
申请日：2019-12-25
Applicant: ADVICS CO., LTD.
Inventor： Yusaku YAMAMOTO
IPC: B60T8/1755 , B60T8/172
Abstract: A brake control device includes: a decrease determination unit that determines whether a requested braking force for a vehicle is decreasing; and a brake control unit which, on the condition that the decrease determination unit determines that the requested braking force is decreasing during deceleration of the vehicle, executes ratio change decrease control of reducing the braking force of the vehicle according to the decrease of the requested braking force, while making a braking force distribution ratio smaller than a reference braking force distribution ratio. The reference braking force distribution ratio is the braking force distribution ratio at a time point when the requested braking force starts to decrease.
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公开(公告)号：US11299135B2
公开(公告)日：2022-04-12
申请号：US16641929
申请日：2018-09-26
Applicant: ADVICS CO., LTD.
Inventor： Takayuki Yamamoto , Hiroyuki Kodama , Hiroyuki Ando
Abstract: A brake control device including a pressure adjusting unit including an electric pump and an electromagnetic valve, and that adjusts, using the electromagnetic valve, a brake liquid discharged by the electric pump to an adjusted liquid pressure and introduces the adjusted liquid pressure to the wheel cylinders of the rear wheels; and a master unit that includes a master cylinder and a master piston, and that includes a master chamber connected to the wheel cylinders of the front wheels and a servo chamber to which the adjusted liquid pressure is introduced and which provides, to the master piston, an advancing force that opposes a retreating force applied to the master piston by the master chamber.
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公开(公告)号：US11279331B2
公开(公告)日：2022-03-22
申请号：US16759156
申请日：2018-11-29
Applicant: ADVICS CO., LTD.
Inventor： Masato Terasaka , Chisa Kitahara
IPC: B60T8/17 , B60T8/1755 , B60T8/171 , B60T8/172
Abstract: A braking control device includes an actuator, a controller, a steering angle sensor, and a yaw rate sensor. The controller calculates a reference turning amount, an actual turning amount, an understeer index, sets to a non-adjustment region in which the increase slope is not decreased when the understeer index is smaller than or equal to a first threshold value, sets to an adjustment region in which the increase slope is decreased when the understeer index is greater than or equal to a second threshold value greater than the first threshold value, and sets to a transition region in which the increase slope is decreased when the understeer index is transitioned from the non-adjustment region and the increase slope is not decreased when the understeer index is transitioned from the adjustment region when the understeer index is greater than the first threshold value and smaller than the second threshold value.
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