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公开(公告)号：US20240416885A1
公开(公告)日：2024-12-19
申请号：US18702659
申请日：2022-10-31
Applicant: ADVICS CO., LTD.
Inventor： Tsuyoshi OTAKE , Atsushi TAKAHASHI
Abstract: An electric braking device includes an electric cylinder unit. The electric cylinder unit includes electric cylinder devices, a housing, and a circuit board accommodated in a board case. The electric cylinder devices are supported by the housing so as to be removable from the housing by being moved relative to the housing in a first X-axis direction. Electric motors of the electric cylinder devices are provided with male connectors, and the board case is provided with female connectors. Fitting between the male connector and the female connector is released by moving the male connector relative to the female connector in the first X-axis direction.
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公开(公告)号：US20230286479A1
公开(公告)日：2023-09-14
申请号：US18006634
申请日：2021-07-29
Applicant: ADVICS CO., LTD.
Inventor： Atsushi TAKAHASHI
CPC classification number: B60T13/147 , B60T13/148 , B60T13/686
Abstract: A vehicle braking device includes: a first hydraulic pressure generation unit that is connected to a first wheel cylinder via a first fluid passage, and generates a hydraulic pressure in the first wheel cylinder; a second hydraulic pressure generation unit that is connected to a second wheel cylinder via a second fluid passage, and generates a hydraulic pressure in the second wheel cylinder; a first power supply unit that supplies electric power to the first hydraulic pressure generation unit; a second power supply unit that supplies electric power to the second hydraulic pressure generation unit; and a normally open communication passage opening and closing unit that is provided in a communication passage connecting the first fluid passage and the second fluid passage, and opens and closes the communication passage.
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公开(公告)号：US20210328534A1
公开(公告)日：2021-10-21
申请号：US17272544
申请日：2019-09-24
Applicant: ADVICS CO., LTD.
Inventor： Atsushi TAKAHASHI
IPC: H02P21/22
Abstract: A motor control device includes a command current derivation unit that derives a command current vector based on a command torque for a brushless motor, a phase difference derivation unit that derives a phase difference between a direction of a real d-axis of rotating coordinates of vector control and a direction of an estimated d-axis thereof, a change unit that changes a direction of the command current vector derived by the command current derivation unit according to the phase difference, and a drive control unit that drives the brushless motor based on the command current vector whose direction is changed by the change unit.
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公开(公告)号：US20240375630A1
公开(公告)日：2024-11-14
申请号：US18690199
申请日：2022-09-28
Applicant: ADVICS CO., LTD.
Inventor： Ryota MAENO , Satoshi HIRATA , Atsushi TAKAHASHI , Tsuyoshi OTAKE
IPC: B60T13/74
Abstract: This electric braking device comprises a linear motion conversion mechanism having a screw shaft caused to rotate by an electric motor, and a nut that moves linearly in response to the rotation of the screw shaft. The electric braking device generates braking force in a vehicle wheel due to a piston coupled to the nut moving linearly within a cylinder and applying pressure to brake fluid. In the electric braking device, a coil spring, of which the extending/retracting direction is the linear motion direction of the piston, is installed in such a state as to be sandwiched between the piston and the screw shaft, so as to be compressed in response to the linear movement of the screw shaft in a direction for reducing braking force and to generate repulsive force against the compression.
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公开(公告)号：US20220212639A1
公开(公告)日：2022-07-07
申请号：US17610911
申请日：2020-05-19
Applicant: ADVICS CO., LTD.
Inventor： Atsushi TAKAHASHI , Hiroyuki KODAMA
Abstract: A braking control device includes a front wheel motor that controls a front wheel hydraulic pressure to adjust a front wheel braking torque, a first motor that adjusts a right rear wheel braking torque, and a second motor that adjusts a left rear wheel braking torque. The front wheel motor includes two-system coils, and the first and second motors include one-system coils. A controller that controls the electric motors includes a one-side drive circuit that energizes one of the two-system coils of the front wheel motor, an other-side front wheel drive circuit that energizes the other of the two-system coils of the front wheel motor, a first rear wheel drive circuit that energizes the one-system coil of the first motor, and a second rear wheel drive circuit that energizes the one-system coil of the second motor.
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Patent Agency Ranking
公开(公告)号：US20250154968A1
公开(公告)日：2025-05-15
申请号：US18729712
申请日：2023-01-18
Applicant: ADVICS CO., LTD.
Inventor： Yuichi SAKAKIBARA , Naru SUGIMOTO , Atsushi TAKAHASHI
Abstract: In an electric cylinder device including a third gear that rotates by receiving rotation of an electric motor and a linear motion conversion mechanism that converts the rotation of the third gear into linear motion of a piston inside a cylinder, a nut, which is a linear motion portion of the linear motion conversion mechanism, and the piston are connected in a state in which relative displacement in a radial direction is allowed.
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公开(公告)号：US20240375629A1
公开(公告)日：2024-11-14
申请号：US18690119
申请日：2022-09-27
Applicant: ADVICS CO., LTD.
Inventor： Yuichi SAKAKIBARA , Ryota MAENO , Atsushi TAKAHASHI , Tsuyoshi OTAKE , Shingo ONODA , Haruo ARAKAWA
IPC: B60T13/74
Abstract: An electric braking device generates a braking force at a wheel via application of a pressing force by a piston by linear motion of the piston in response to the transmission of a forward-direction rotational torque from an electric motor to a linear motion conversion mechanism. The electric braking device is provided with a one-way clutch that cuts off the transmission of a rotational torque between the electric motor and the linear motion conversion mechanism when applied with a rotational torque in a direction opposite to the forward direction and having a magnitude equal to or greater than a predetermined value.
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公开(公告)号：US20230391307A1
公开(公告)日：2023-12-07
申请号：US18249386
申请日：2021-10-26
Applicant: ADVICS CO., LTD.
Inventor： Tsuyoshi OTAKE , Atsushi TAKAHASHI
CPC classification number: B60T13/745 , F15B2211/665 , F15B21/00 , B60T13/148
Abstract: A vehicle brake device includes a first electric motor and a second electric motor; a first electrically powered cylinder device and a second electrically powered cylinder device driven by the first electric motor and the second electric motor, respectively; and a circuit board on which a first circuit and a second circuit for controlling the first electric motor and the second electric motor, respectively, are formed. In the vehicle brake device, the first electrically powered cylinder device and the second electrically powered cylinder device are arranged side by side in the radial direction with the axis thereof being parallel to each other, and the circuit board is arranged perpendicular to the axis of the first electrically powered cylinder device and the second electrically powered cylinder device.
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公开(公告)号：US20240109523A1
公开(公告)日：2024-04-04
申请号：US18249408
申请日：2021-10-26
Applicant: ADVICS CO., LTD.
Inventor： Tsuyoshi OTAKE , Atsushi TAKAHASHI
CPC classification number: B60T8/17 , B60T11/203 , B60T13/662
Abstract: A vehicle brake device includes a first electric motor, a first electrically powered cylinder device, a first electromagnetic valve, and a first pressure sensor serving as first elements, a second electric motor, a second electrically powered cylinder device, a second electromagnetic valve, and a second pressure sensor serving as second elements, and a circuit board in which a first sector in which a first circuit for controlling the first element is formed and a second sector in which a second circuit for controlling the second element is formed are arranged side by side. In the vehicle brake device, the first element controlled only by the first circuit is disposed so as to face the first sector, and the second element controlled only by the second circuit is disposed so as to face the second sector.
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公开(公告)号：US20210367541A1
公开(公告)日：2021-11-25
申请号：US17273483
申请日：2019-09-24
Applicant: ADVICS CO., LTD.
Inventor： Atsushi TAKAHASHI
Abstract: A motor control device includes a current acquisition unit that acquires a limit current allowed to flow from a battery to a brushless motor, a voltage acquisition unit that acquires a power supply voltage applied from the battery to the brushless motor, and a command current determination unit that determines a d-axis command current and a q-axis command current. The command current determination unit determines the d-axis command current and the q-axis command current based on a power limit circle which is a current characteristic on a d-axis and a q-axis based on an inner product of a voltage vector and a current vector and a voltage limit circle which is a current characteristic on the d-axis and the q-axis based on the power supply voltage and an angular velocity of the brushless motor.
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