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公开(公告)号：US11949303B2
公开(公告)日：2024-04-02
申请号：US17613544
申请日：2020-05-29
Applicant: HITACHI ASTEMO, LTD.
Inventor： Kenichi Nakayama , Hiromitsu Okamoto , Satoshi Yamamura , Tomohiro Adachi
CPC classification number: H02K3/24 , H02K1/165 , H02K3/345 , H02K9/19 , H02K2203/03
Abstract: An object of the present invention is to efficiently cool a rotor coil even in a rotor provided with a wire connection plate. A stator of a rotating electric machine includes a stator core, a plurality of segment coils protruding from slots of the stator core and arranged in a radial direction, a connection conductor that connects the segment coils, and an insulating member that holds the connection conductor. The insulating member includes a through hole through which the segment coil penetrates and is accommodated. An opening through which a coolant can flow into the through hole is provided on an inner peripheral side of the insulating member.
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公开(公告)号：US11945519B2
公开(公告)日：2024-04-02
申请号：US17244213
申请日：2021-04-29
Applicant: HITACHI ASTEMO, LTD.
Inventor： Akihiro Kogure
CPC classification number: B62D5/006 , B62D5/0448 , B62D6/008 , B62D15/0215
Abstract: A reaction force generating device for a steering device includes a steering shaft connected to a steering member on which a steering operation is to be performed by a driver, a direct drive motor connected to the steering shaft and configured to generate reaction torque, an electromagnetic brake configured to generate friction torque and including a first friction portion configured to integrally rotate with the steering shaft, a second friction portion provided to face the first friction portion and to be non-rotatable, and an electromagnetic unit configured to press the second friction portion against the first friction portion.
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公开(公告)号：US11942889B2
公开(公告)日：2024-03-26
申请号：US17417311
申请日：2019-12-12
Applicant: Hitachi Astemo, Ltd.
Inventor： Shinyu Ko , Kohei Myoen , Eigo Kishimoto
CPC classification number: H02P6/08 , B60L15/20 , B60L53/20 , B60L58/12 , B60L58/18 , B60L2240/421 , B60L2240/423
Abstract: A first torque calculation unit 114 calculates torque TQ_DC currently generated by a motor 106 based on a DC current DC1. A second torque calculation unit 115 calculates torque TQ_UVW currently generated by the motor 106 based on U-phase, V-phase, and W-phase currents. A torque limit calculation unit 116 calculates a torque limit TQ_LMT1 using a torque limit characteristic map measured in advance based on a current limit DC_LMT1. A torque limit correction unit 117 compares first torque TQ_DC with second torque TQ_UVW to calculate a torque variation degree KP1. Then, the torque limit TQ_LMT1 is corrected using the variation degree KP1 to calculate a torque limit TQ_LMT2. As a result, even if required torque reaches the torque limit, the DC current does not exceed the current limit, and the output of the motor can be fully utilized by approaching the current limit.
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公开(公告)号：US11941983B2
公开(公告)日：2024-03-26
申请号：US17784485
申请日：2020-11-20
Applicant: Hitachi Astemo, Ltd.
Inventor： Hideyuki Kume , Hidehiro Toyoda
CPC classification number: G08G1/16 , B60W40/105 , B60W50/16 , G08G1/166 , G08G1/167 , B60W30/12 , B60W2050/143 , B60W2050/146 , B60W2420/42 , B60W2540/215 , B60W2552/53 , B60W2556/10 , B60W2556/40 , G06V20/588
Abstract: A driving assistance device includes a recording unit that records vehicle past traveling positions and related position estimation information, and a relative position estimation unit that estimates a vehicle relative position based on a sensor, adds a history of the relative position to the past traveling position, and uses the output of the sensor. The driving assistance device further includes a position estimation unit that estimates a vehicle position with respect to the past traveling positions and adds a history of the estimated position to the past traveling position, in addition to a deviation determination unit that determines deviation from the past traveling positions using a distribution of the past traveling positions, the vehicle position relative to the past traveling positions, and a reference value. The driving assistance device includes a control unit that controls the vehicle to cancel a warning or deviation when the deviation is determined.
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公开(公告)号：US20240092287A1
公开(公告)日：2024-03-21
申请号：US18253952
申请日：2021-09-07
Applicant: HITACHI ASTEMO, LTD.
Inventor： Motomune SUZUKI , Hideyuki SAKAMOTO
IPC: B60R16/023 , B60W50/04 , B60W50/14
CPC classification number: B60R16/0232 , B60W50/04 , B60W50/14
Abstract: The present disclosure provides a vehicle control device capable of detecting overheating of a CPU or a heat dissipation failure of the cooling mechanism, while suppressing increases in the size, the number of components, and the cost. A vehicle control device according to the present embodiment includes a memory, a CPU, a temperature sensor that is provided internal of the CPU, and a cooling mechanism that cools the CPU. The memory stores therein a standard pattern SP1, a wait time tw, a standard temperature Ts, and a normal temperature difference. The CPU then stores the load of the CPU in the memory, and monitors the load. When the load changes in accordance with the standard pattern SP1, the CPU calculates a temperature difference ΔTse between the standard temperature Ts and an evaluation temperature Te of the temperature sensor at the time point when the wait time tw elapses from the first pattern SP1 has started, and determines a failure when the temperature difference ΔTse is larger than the normal temperature difference.
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Patent Agency Ranking
公开(公告)号：US11933642B2
公开(公告)日：2024-03-19
申请号：US17559099
申请日：2021-12-22
Applicant: Hitachi Astemo, Ltd.
Inventor： Yosuke Murakami
CPC classification number: G01D5/20 , H03B5/08 , H05K1/181 , H05K2201/10151
Abstract: A two-wire displacement sensor device includes an LC oscillation circuit including a coil whose inductance changes in accordance with a displacement amount of an object and an oscillation unit provided with capacitors and amplifying elements; and an interface unit serving as a signal output unit and a power supply input unit. The interface unit includes a constant current circuit that outputs at least two current values.
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公开(公告)号：US20240086179A1
公开(公告)日：2024-03-14
申请号：US18550882
申请日：2022-01-25
Applicant: Hitachi Astemo, Ltd.
Inventor： Miki YAMADA , Takafumi SUZUKI , Takashi MATSUBARA
Abstract: A software component update system is connected to a first database and a second database and includes a component tree rebuilding unit that rebuilds a software component tree of the second database on the basis of tag information and software component tree information of the first database; a component extraction unit that specifies the software components of the second database requiring update mirroring, on the basis of the rebuilt software component tree; and a file update unit that updates the software component file of the specified software components.
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公开(公告)号：US20240085253A1
公开(公告)日：2024-03-14
申请号：US18275625
申请日：2021-08-31
Applicant: Hitachi Astemo, Ltd.
Inventor： Kenji YOSHIHARA , Hiroyuki ABE , Tsukasa TAKAHASHI , Takeo HOSOKAWA
IPC: G01L1/22
CPC classification number: G01L1/2231 , B60C2019/004
Abstract: An object of the present invention is to provide a strain amount detection device capable of accurately detecting deformations, in multiple directions, of a tire by one strain measuring element. A strain amount detection device according to the present invention includes a disk-shaped base member that holds a strain measuring element, in which the base member acts as a strain body by transmitting strain of a tire to the strain measuring element.
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159.发明公开公开(公告)号：US20240083208A1
公开(公告)日：2024-03-14
申请号：US18274887
申请日：2022-02-09
Applicant: Hitachi Astemo, Ltd.
Inventor： Miho SHIMAZAKI , Milton MUZVIDZIWA , Koichi YAMAKA
IPC: B60G17/015 , H01F7/16
CPC classification number: B60G17/015 , H01F7/16 , B60G2500/11
Abstract: Provided is a solenoid comprising a molded coil, an anchor, and an armature. In the anchor, an outer peripheral convex portion and an inner peripheral convex portion are formed. When no current is being applied, axial distance between the outer peripheral convex portion of the anchor and an outer peripheral portion of the armature which is radially closest to the outer peripheral convex portion is smaller than axial distance between the inner peripheral convex portion of the anchor and an inner peripheral portion of the armature which is radially closest to the inner peripheral convex portion. In other words, timing at which the outer peripheral convex portion of the anchor and the outer peripheral portion of the armature face each other in a radial direction is shifted from timing at which the inner peripheral convex portion of the anchor and the inner peripheral portion of the armature face each other in the radial direction.
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公开(公告)号：US11927243B2
公开(公告)日：2024-03-12
申请号：US17270462
申请日：2019-08-05
Applicant: Hitachi Astemo, Ltd.
Inventor： Mikio Yamashita
CPC classification number: F16F9/516 , F16F9/18 , F16F9/32 , F16F9/36 , B60G17/06 , B60G2202/23 , B60G2202/24 , B60G2206/41 , B60G2500/10 , B60G2600/21 , B60G2800/162 , F16F9/364 , F16F2222/04 , F16F2222/12 , F16F2228/066 , F16F2230/02 , F16F2230/30 , F16F2232/08 , F16F2234/02
Abstract: A shock absorber includes a seal member that is slidably in contact with a piston rod, a friction member that is formed of an annular elastic rubber section slidably in contact with the piston rod and an annular base section to which the elastic rubber section is fixed, and an communication path that reduces pressure difference between both sides of the friction member in axial direction. The elastic rubber section is provided with a minimum inner diameter section, a first enlarged diameter section, and a second enlarged diameter section. A force is applied to the piston rod by the friction member such that movement in an outward direction of the cylinder becomes difficult and movement in an inward direction of the cylinder becomes easy.
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