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公开(公告)号：US20240141964A1
公开(公告)日：2024-05-02
申请号：US18278952
申请日：2022-02-28
Applicant: Hitachi Astemo, Ltd.
Inventor： Atsushi ODAIRA , Haruhiko FUJITA
IPC: F16D65/18
CPC classification number: F16D65/18 , F16D2121/24
Abstract: An electric brake apparatus includes a control unit connected to an electric motor, a first connector portion connected to the control unit and used for power feeding and input of one of redundant signals, a second connector portion connected to the control unit and used for power feeding and input of another of the redundant signals, and a third connector connected to the control unit and used for input of a signal related to a wheel speed. This allows providing redundancy for control associated with power feeding and rotation of the electric motor and also reducing noise in the input signal of the wheel speed.
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公开(公告)号：US11970152B2
公开(公告)日：2024-04-30
申请号：US17298809
申请日：2019-11-25
Applicant: Hitachi Astemo, Ltd.
Inventor： Koki Takimoto , Shu Kato
IPC: B60T8/32 , B60T7/04 , B60T13/62 , B60T13/68 , B60T17/22 , G01D5/14 , G01L5/22 , G05G1/38 , G05G25/00
CPC classification number: B60T8/326 , B60T13/62 , B60T13/686 , B60T17/22 , G01D5/142 , G01L5/225 , G05G1/38 , G05G25/00 , B60T7/042 , B60T2220/04 , B60T2270/402 , B60T2270/404 , B60T2270/82
Abstract: A vehicle pedal stroke detection apparatus acquires a first value based on a physical amount regarding a magnetic flux of a magnet that is output from a stroke sensor. The first value is a physical amount regarding a magnitude of a magnetic flux density of the magnet with respect to a displacement of a push rod. Then, the vehicle pedal stroke detection apparatus compares the first value and a second value. The second value is a preset physical amount regarding the magnitude of the magnetic flux density of the magnet with respect to the displacement of the push rod.
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143.发明授权公开(公告)号：US11967915B2
公开(公告)日：2024-04-23
申请号：US17778544
申请日：2020-11-04
Applicant: Hitachi Astemo, Ltd.
Inventor： Takaya Tsukagoshi , Takafumi Hara , Katsuhiro Hoshino , Toshiyuki Ajima
Abstract: The vibration and noise generated in a permanent magnet synchronous motor are effectively suppressed. A motor control device 1 comprises: a triangular wave generation unit 17 which generates a triangular wave signal Tr that is a carrier wave, a carrier frequency adjustment unit 16 which adjusts a carrier frequency fc that represents a frequency of the triangular wave signal Tr, and a gate signal generation unit 18 which performs pulse-width modulation on three-phase voltage commands Vu*, Vv*, Vw* according to a torque command T* using the triangular wave signal Tr, thereby generating a gate signal for controlling an operation of an inverter. The carrier frequency adjustment unit 16 adjusts the carrier frequency fc so as to change a voltage phase error Δθv representing a phase difference of the three-phase voltage commands Vu*, Vv*, Vw* and the triangular wave signal Tr based on the torque command T*, and a rotation speed ωr of a motor.
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公开(公告)号：US11965567B2
公开(公告)日：2024-04-23
申请号：US17057708
申请日：2019-05-15
Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
Inventor： Shoichi Noguchi , Shigeru Hayashi , Satoshi Nakamura , Toshiko Watanabe
IPC: F16D55/18 , F16D65/18 , F16D125/08
CPC classification number: F16D65/183 , F16D2125/08
Abstract: This disc brake includes a cylinder bore into which a piston is fitted, a seal groove provided in the cylinder bore as an annular groove, and a seal member which has a rectangular cross section shape and which is fitted into the seal groove and seal a space between the piston and the cylinder bore. The seal groove includes a bottom surface portion, a side surface portion, and a chamfered portion. The chamfered portion is formed to expand an opening of the seal groove in the axial direction of the cylinder bore and has two types of curvature radii (r1 and r2).
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公开(公告)号：US11964726B2
公开(公告)日：2024-04-23
申请号：US16999705
申请日：2020-08-21
Applicant: SHOWA CORPORATION
Inventor： Yuka Kubotera
CPC classification number: B62K25/283 , B60G15/063 , B60G15/068 , B60G17/021 , B60G17/08 , F16F9/3242 , F16F9/3271 , F16F9/369 , B60G2202/312 , B60G2204/1242 , B60G2204/128 , B60G2204/129 , B60G2206/41 , B60G2300/12 , B60G2500/20 , B60G2600/20 , B60G2800/162 , B62K2025/048 , F16F9/065 , F16F2222/12 , F16F2228/066
Abstract: A shock absorber includes: a damper tube accommodating a piston in a reciprocally movable manner; a suspension spring for urging the damper tube and a piston rod in opposite directions; a first male screw provided on an outer peripheral surface of the damper tube; a first nut screwed into the first male screw so as to enable a spring load of the suspension spring to be adjusted; a second nut screwed into the first male screw so as to enable a position of the first nut in an axial direction of the damper tube to be fixed; a second male screw having a reverse screw configuration to the first male screw and provided on the outer peripheral surface of the damper tube; and a damper head screwed into the second male screw so as to enable the damper head to cover one end portion of the damper tube.
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Patent Agency Ranking
公开(公告)号：US11962238B2
公开(公告)日：2024-04-16
申请号：US17636633
申请日：2020-08-14
Applicant: Hitachi Astemo, Ltd.
Inventor： Shigenobu Komatsu , Hideyuki Sakamoto
CPC classification number: H02M3/157 , B60L50/60 , H02M1/0003 , H02M1/0016 , H02M1/0025 , H02M1/0038 , H02M1/007 , H02M1/08 , H02M1/32 , B60L2240/527
Abstract: Provided is a highly reliable electronic control unit capable of improving responsiveness of an output current of a switching power supply to load current variation and suppressing power supply voltage variation accompanying the load current variation at low cost and with high power efficiency. Provided are: a calculation unit that performs signal processing; a first power supply circuit that supplies a first power supply voltage to the calculation unit; and a second power supply circuit that supplies a second power supply voltage to the first power supply circuit. The calculation unit has a function of outputting a control signal when a change in a consumed current of the calculation unit exceeds a predetermined threshold, and changes any one or both of a control scheme of the first power supply circuit and the second power supply voltage according to the control signal.
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147.发明授权公开(公告)号：US11961780B2
公开(公告)日：2024-04-16
申请号：US17295713
申请日：2019-11-08
Applicant: HITACHI ASTEMO, LTD.
Inventor： Nobutake Tsuyuno , Akira Matsushita , Yujiro Kaneko
IPC: H05K7/20 , H01L21/48 , H01L23/367 , H01L23/373
CPC classification number: H01L23/3677 , H01L21/4882 , H01L23/3735 , H05K7/209
Abstract: A semiconductor module includes a semiconductor device that includes first and second fin bases having first and second connecting portions and a resin for sealing the outer peripheral side surfaces of first to fourth conductors, and a flow path forming body connected to the first and second connecting portions of the first and second fin bases. A first elastically deformed portion, which is elastically deformed, is provided such that a distance in a thickness direction between the outer peripheral ends of the first and second connecting portions becomes smaller than a distance in a thickness direction between intermediate portions of the first and second connecting portions. The resin is filled between the first and second connecting portions of the first and second fin bases are filled with the resin therebetween.
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公开(公告)号：US11956933B2
公开(公告)日：2024-04-09
申请号：US17760729
申请日：2020-07-31
Applicant: HITACHI ASTEMO, LTD.
Inventor： Takashi Hirao , Takeshi Tokuyama , Noriyuki Maekawa , Akira Matsushita , Toshiya Satoh
CPC classification number: H05K7/2089 , H02K9/00 , H02M7/003 , H02M7/537
Abstract: No consideration is given to heat transferred from a semiconductor module to a capacitor via a bus bar module. The heat generated by a semiconductor module (1) is transferred to a bus bar module (3) via a DC terminal (1A) of the semiconductor module (1). As illustrated in FIG. 4(B), the heat transferred to the bus bar module 3 is then transferred to the pressing member 5 via the annular conductor 8 and the bolt 5A. Since the pressing member 5 is in close contact with the second cooler 2B, the heat transferred to the pressing member 5 is cooled by the second cooler 2B. On the other hand, the heat transferred to the convex portion 6A of the housing 6 is transferred to the first cooler 2A via the housing 6 and cooled. As a result, in the configuration in which a capacitor (4) is connected to the semiconductor module (1) via the bus bar module (3), the heat transferred from the semiconductor module (1) to the capacitor (4) can be suppressed.
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公开(公告)号：US11956900B2
公开(公告)日：2024-04-09
申请号：US17435961
申请日：2019-12-24
Applicant: Hitachi Astemo, Ltd.
Inventor： Tomohiro Fukuda , Yoshiaki Mizuhashi
CPC classification number: H05K1/144 , H05K1/115 , H05K1/184 , H05K3/306 , H05K3/36 , H05K2201/042 , H05K2201/1003 , H05K2201/10053 , H05K2201/10151
Abstract: An object of the present invention is to improve the component mounting efficiency. An electronic control unit of the present invention includes: a power board 23 that includes a first insertion hole portion R1A having a plurality of holes 23Aa-2U, 23Aa-2V, and 23Aa-2W through which a coil wire of a first system is inserted and a second insertion hole portion R2A having a plurality of holes 23Aa-2U, 23Aa-2V, and 23Aa-2W through which a coil wire of a second system is inserted; a control board 25 provided on an upper part of the power board 23; and a board-to-board connector 105 that electrically connects the power board 23 and the control board 25. The first insertion hole portion R1A and the second insertion hole portion R2A are collectively arranged on the same side of the power board 23.
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公开(公告)号：US11956700B2
公开(公告)日：2024-04-09
申请号：US17596940
申请日：2020-07-29
Applicant: Hitachi Astemo, Ltd.
Inventor： Satoshi Tamaki
IPC: H04W4/46 , H04W4/70 , H04W72/0446 , H04W72/0453 , H04W72/53
CPC classification number: H04W4/46 , H04W4/70 , H04W72/0446 , H04W72/0453 , H04W72/53
Abstract: The present invention provides a wireless communication system capable of performing communication between wireless communication apparatuses respectively mounted on vehicles performing platooning is characterized in that a frequency channel used in data transmission and reception between an own vehicle and a preceding vehicle adjacent to the own vehicle, and a frequency channel used in data transmission and reception between the own vehicle and a succeeding vehicle adjacent to the own vehicle are different from each other.
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