Hitachi Astemo, Ltd.

Japan

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Date
2020 1
Before 2019 14
IPC Class
B60L 53/60 - Monitoring or controlling charging stations 3
B60R 16/02 - Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric 3
B60T 8/172 - Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters 3
H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries 3
B60T 8/1763 - Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS responsive to the coefficient of friction between the wheels and the ground surface 2
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Found results for  patents

1.

VEHICLE COUPLING ASSISTANCE DEVICE, VEHICLE COUPLING ASSISTANCE METHOD, VEHICLE COUPLING ASSISTANCE SYSTEM, AND STEERING CONTROL DEVICE

      
Document Number 03131498
Status In Force
Filing Date 2020-04-30
Open to Public Date 2020-11-19
Grant Date 2024-03-26
Owner HITACHI ASTEMO, LTD. (Japan)
Inventor
  • Wang, Jian
  • Takahama, Taku

Abstract

A vehicle coupling assistance device selects, in accordance with a physical quantity related to the angle of a second coupling part of a trailer with respect to a first coupling part of a vehicle, one of a first steering control mode, which controls the steering angle of a front wheel of the vehicle and the steering angle of a rear wheel of the vehicle to be the same angle, and a second steering angle control mode, which controls the steering angle of the front wheel and the steering angle of the rear wheel to be different angles, as a steering angle control mode, and outputs a steering angle control command to perform control in the selected steering angle control mode to a front wheel steering device and a rear wheel steering device of the vehicle.

IPC Classes  ?

  • B62D 12/02 - Steering specially adapted for vehicles operating in tandem or having pivotally connected frames for vehicles operating in tandem
  • B62D 6/00 - Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits
  • B62D 7/15 - Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering characterised by means varying the ratio between the steering angles of the steered wheels

2.

BRAKE FLUID PRESSURE CONTROL DEVICE FOR VEHICLE

      
Document Number 03017587
Status In Force
Filing Date 2017-02-28
Open to Public Date 2017-10-26
Grant Date 2020-08-18
Owner HITACHI ASTEMO, LTD. (Japan)
Inventor Yamakawa, Teruyoshi

Abstract

A brake fluid pressure control device for a vehicle comprises a wheel speed acquisition means that acquires a wheel speed, an estimated vehicle body speed calculation means that calculates an estimated vehicle body speed on the basis of the wheel speed, and a bad road determination means that determines whether a road surface of travel is a bad road. The brake fluid pressure control device for a vehicle can provide hydraulic control of a brake fluid that is used in wheel brakes, and the bad road determination means determines whether the road surface of travel is a bad road on the basis of the deviation between the estimated vehicle body speed and the wheel speed.

IPC Classes  ?

  • B60T 8/172 - Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters
  • B60T 8/1763 - Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS responsive to the coefficient of friction between the wheels and the ground surface

3.

BRAKE FLUID PRESSURE CONTROL DEVICE FOR VEHICLE

      
Document Number 03018944
Status In Force
Filing Date 2017-02-28
Open to Public Date 2017-10-26
Grant Date 2020-09-22
Owner HITACHI ASTEMO, LTD. (Japan)
Inventor Yamakawa, Teruyoshi

Abstract

A brake fluid pressure control device for a vehicle, said brake fluid pressure control device being able to provide hydraulic control of brake fluid pressure and comprising a wheel speed acquisition means that acquires a wheel speed, a slippage amount calculation means that calculates a wheel slippage amount, and a bad road determination means that determines whether a road surface of travel is a bad road. The bad road determination means determines whether the road surface of travel is a bad road using a bad road determination threshold value, and using a value that relates to wheel behavior and is calculated on the basis of at least the wheel speed. The bad road determination threshold value is modified according to the wheel slippage amount.

IPC Classes  ?

  • B60T 8/172 - Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters
  • B60T 8/1763 - Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS responsive to the coefficient of friction between the wheels and the ground surface

4.

MOTOR CONTROL DEVICE AND BRAKE FLUID PRESSURE CONTROL DEVICE FOR VEHICLE

      
Document Number 03015967
Status In Force
Filing Date 2017-02-28
Open to Public Date 2017-10-05
Grant Date 2021-03-02
Owner HITACHI ASTEMO, LTD. (Japan)
Inventor Kosuge, Shintaro

Abstract

[Problem] To provide a motor control device and a brake fluid pressure control device which provide a technology that enables low-rotational-frequency control of a motor while suppressing the generation of heat. [Solution] A motor control device equipped with a drive control unit that controls the turning on/off of a motor, and a voltage acquisition unit that acquires the voltage across the terminals of the motor. The drive control unit 32 confirms whether the motor drive signal is off (ST01), and if the result is Yes the drive control unit 32 confirms whether the voltage across the terminals as obtained by the voltage acquisition unit 33 has decreased and reached a target voltage (ST02). If the result in ST02 is Yes an On time is set on the basis of the immediately previous Off time (ST03), and the motor drive signal is switched from Off to On (ST04). After the On time elapses the motor drive signal is switched from On to Off (ST05). [Effect] Low-rotational-frequency control of a motor can be performed while suppressing the generation of heat in a motor relay.

IPC Classes  ?

  • H02P 7/29 - Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using pulse modulation
  • B60T 8/48 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition connecting the brake actuator to an alternative or additional source of fluid pressure

5.

VEHICLE BRAKE HYDRAULIC CONTROL DEVICE

      
Document Number 03016425
Status In Force
Filing Date 2017-02-28
Open to Public Date 2017-10-05
Grant Date 2020-09-22
Owner HITACHI ASTEMO, LTD. (Japan)
Inventor
  • Toyoda, Masahiro
  • Yamakawa, Teruyoshi

Abstract

[Problem] To provide a vehicle brake hydraulic control device such that it is possible to accurately determine, with a simple method, when the coefficient of friction of the travel road surface to tires changes suddenly from a low coefficient of friction coefficient to a high coefficient of friction. [Solution] A vehicle brake hydraulic control device which is capable of hydraulic control of the brake hydraulic pressure applied to wheel brakes. It is determined whether or not the pressure-increasing time in the present pressure-increasing control exceeds a determination time which is set on the basis of the pressure-increasing time in past pressure-increasing control. If the pressure-increasing time in the present pressure-increasing control exceeds the determination time, it is determined that the road surface on which the vehicle is traveling has changed from a road surface with a low coefficient of friction to a road surface with a high coefficient of friction. [Effect] It is possible to accurately determine, with a simple method, when the road surface on which the vehicle is traveling has changed suddenly from a road surface with a low coefficient of friction to a road surface with a high coefficient of friction.

IPC Classes  ?

  • B60T 8/172 - Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters
  • B60T 8/1761 - Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS responsive to wheel or brake dynamics, e.g. wheel slip, wheel acceleration or rate of change of brake fluid pressure

6.

TRIM AND TILT DEVICE AND MARINE VESSEL PROPELLING MACHINE

      
Document Number 02868889
Status In Force
Filing Date 2014-10-28
Open to Public Date 2015-09-26
Grant Date 2018-07-17
Owner HITACHI ASTEMO, LTD. (Japan)
Inventor
  • Saito, Takahiko
  • Tsutsui, Hayato

Abstract

A trim and tilt device includes: a cylindrical cylinder; a partition member provided in contact with the cylinder so as to be movable in an axial direction of the cylinder and partitioning a space inside the cylinder; a rod member to which the partition member is attached on one end side of the rod member and which moves relatively in the axial direction of the cylinder together with the partition member thereby adjusting a tilt angle of a marine vessel propelling machine body with respect to a hull; and a rod guide member electrically connected to a sacrificial anode and having a hole so that the rod member passes through the hole, and the rod guide member has a conductive portion disposed at a position, where the hole is formed, so as to electrically connect the rod member and the rod guide member.

IPC Classes  ?

  • B63H 20/10 - Means enabling trim or tilt, or lifting of the propulsion element when an obstruction is hit; Control of trim or tilt
  • C23F 13/20 - Conducting electric current to electrodes
  • F16J 7/00 - Piston-rods, i.e. rods rigidly connected to the piston

7.

VEHICLE REAR WHEEL LIFT TENDENCY JUDGEMENT DEVICE

      
Document Number 02882315
Status In Force
Filing Date 2015-02-18
Open to Public Date 2015-08-18
Grant Date 2016-08-09
Owner HITACHI ASTEMO, LTD. (Japan)
Inventor
  • Iizuka, Chikashi
  • Toda, Makoto
  • Kitagawa, Hiroki
  • Hasegawa, Tetsuya
  • Kodaira, Nobuyuki
  • Tsuchiya, Tomoharu

Abstract

A vehicle rear wheel lift tendency judgment device: includes a first deceleration obtaining device for obtaining a first deceleration along a first straight line, being a component in a first direction of an acceleration on a center of gravity, and a second deceleration obtaining device for obtaining a second deceleration along a second straight line, being a component in a second direction of the acceleration; judges that a rear, wheel tends to be lifted, when the first deceleration is greater in the first direction than a first threshold, or when the second deceleration is greater in the second direction than a second threshold; and performs at least one of setting for shifting the first threshold in a direction opposite to the first direction and setting for shifting the second threshold in a direction opposite to the second direction, when a second-deceleration change rate being a change amount in the second deceleration per unit time becomes greater in the second direction than a change-rate threshold, enabling a quick judgment of a rear wheel lift tendency.

IPC Classes  ?

  • B60W 40/10 - Estimation or calculation of driving parameters for road vehicle drive control systems not related to the control of a particular sub-unit related to vehicle motion
  • B60W 40/12 - Estimation or calculation of driving parameters for road vehicle drive control systems not related to the control of a particular sub-unit related to parameters of the vehicle itself

8.

BALL SCREW AND POWER STEERING APPARATUS

      
Document Number 02857799
Status In Force
Filing Date 2014-07-25
Open to Public Date 2015-05-29
Grant Date 2018-05-08
Owner HITACHI ASTEMO, LTD. (Japan)
Inventor
  • Fujita, Hiroshi
  • Ito, Ryota

Abstract

A ball screw includes: an end deflector; and a nut having a housing portion in which the end deflector is housed; in which the end deflector is formed of two or more division members, and at least one of the division members includes a protruding portion that contacts a wall surface forming the housing portion.

IPC Classes  ?

  • B62D 3/08 - Steering gears mechanical of worm type with screw and nut using intermediate balls or the like
  • B62D 5/04 - Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear

9.

STRADDLE-TYPE VEHICLE SEAT AND STRADDLE-TYPE VEHICLE

      
Document Number 02847459
Status In Force
Filing Date 2014-03-26
Open to Public Date 2015-03-03
Grant Date 2019-05-07
Owner HITACHI ASTEMO, LTD. (Japan)
Inventor Ishige, Shingo

Abstract

A straddle-type vehicle seat includes: a saddle-type seat main body which is provided above a vehicle body in one of a three-wheel straddle-type vehicle and a four- wheel straddle-type vehicle and which is straddled by a driver; and an angle adjustment mechanism which adjusts an angle of the saddle-type seat main body with respect to the vehicle body in accordance with a signal from a detection unit that detects a traveling state of the straddle-type vehicle when the straddle-type vehicle is turning.

IPC Classes  ?

  • B62J 1/10 - Internal adjustment of saddles
  • B62J 1/00 - Saddles or other seats for cycles; Arrangement thereof; Component parts
  • B62K 17/00 - Cycles not otherwise provided for

10.

ELECTRONIC CONTROL UNIT

      
Document Number 02792310
Status In Force
Filing Date 2012-10-17
Open to Public Date 2013-04-21
Grant Date 2019-06-04
Owner
  • HONDA MOTOR CO., LTD. (Japan)
  • HITACHI ASTEMO, LTD. (Japan)
Inventor
  • Takashima, Yuzuru
  • Tanno, Masaki
  • Yamada, Takeshi
  • Umeya, Haruki
  • Daibo, Shinichi

Abstract

A processor of an electronic control unit performs at least one of a first diagnosis process of determining whether or not a switching element is abnormal based on a signal output from an abnormality diagnosis circuit in a state where a first diagnosis voltage supply circuit is controlled to supply a first diagnosis voltage to a control line and a second diagnosis process of determining whether or not a pilot signal line is abnormal based on the signal output from the abnormality diagnosis circuit obtained in a state where a second diagnosis voltage supply circuit is controlled to supply a second diagnosis voltage to the pilot signal line.

IPC Classes  ?

  • H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
  • B60L 53/18 - Cables specially adapted for charging electric vehicles
  • B60L 53/60 - Monitoring or controlling charging stations
  • B60R 5/00 - Compartments within vehicle body primarily intended or sufficiently spacious for trunks, suit-cases, or the like
  • B60R 16/02 - Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric

11.

ELECTRONIC CONTROL UNIT

      
Document Number 02792870
Status In Force
Filing Date 2012-10-18
Open to Public Date 2013-04-21
Grant Date 2019-06-04
Owner
  • HONDA MOTOR CO., LTD. (Japan)
  • HITACHI ASTEMO, LTD. (Japan)
Inventor
  • Takashima, Yuzuru
  • Tanno, Masaki
  • Yamada, Takeshi
  • Umeya, Haruki
  • Daibo, Shinichi

Abstract

An electronic control unit includes a processor performing a process necessary for a charging control based on a pilot signal, an input circuit disposed in a stage preceding an input port of the processor, and a pseudo-signal supply circuit supplying a pseudo-pilot signal to a pilot signal line under the control of the processor, and the processor performs a malfunction diagnosis for the input circuit based on a signal state of the input port when controlling the pseudo-signal supply circuit to supply the pseudo-pilot signal to the pilot signal line.

IPC Classes  ?

  • H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
  • B60L 53/60 - Monitoring or controlling charging stations
  • B60R 16/02 - Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric

12.

ELECTRONIC CONTROL UNIT

      
Document Number 02792279
Status In Force
Filing Date 2012-10-15
Open to Public Date 2013-04-21
Grant Date 2019-06-04
Owner
  • HONDA MOTOR CO., LTD. (Japan)
  • HITACHI ASTEMO, LTD. (Japan)
Inventor
  • Takashima, Yuzuru
  • Tanno, Masaki
  • Yamada, Takeshi
  • Umeya, Haruki
  • Daibo, Shinichi

Abstract

An electronic control unit includes a pilot voltage setting circuit that changes a voltage of a pilot signal in a stepwise manner, a processor that controls the pilot voltage setting circuit to change the voltage of the pilot signal, an input buffer that is disposed in a stage preceding a pilot signal input port of the processor, and an input buffer voltage setting circuit that changes an input voltage of the input buffer so as to be within a recommended input voltage range of the input buffer based on the change in the voltage of the pilot signal.

IPC Classes  ?

  • H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
  • B60L 53/60 - Monitoring or controlling charging stations
  • B60R 16/02 - Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric

13.

MOTOR-DRIVEN STEERING ASSIST APPARATUS

      
Document Number 02510421
Status In Force
Filing Date 2005-06-20
Open to Public Date 2006-05-19
Grant Date 2011-10-11
Owner HITACHI ASTEMO, LTD. (Japan)
Inventor
  • Saito, Mitsuo
  • Hata, Koichi
  • Kobayashi, Takeshi
  • Kinjyo, Toshiki

Abstract

A motor-driven steering assist apparatus is disclosed having a single unit body covered by first to third housings. An upper end portion of an input shaft and a torque sensor are supported by the first housing. An upper end portion of an output shaft, an electric motor, a worm gear and a worm wheel are supported by the second housing. A lower end portion of the output shaft is supported to the third housing, and the second housing can be attached to the vehicle body side.

IPC Classes  ?

  • B62D 5/04 - Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
  • B62D 6/08 - Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits responsive only to input torque

14.

BRAKE CALIPER STRUCTURE OF STRADDLE SEAT OFF-ROAD VEHICLE

      
Document Number 02517814
Status In Force
Filing Date 2005-08-31
Open to Public Date 2006-03-03
Grant Date 2013-07-16
Owner HITACHI ASTEMO, LTD. (Japan)
Inventor
  • Tomita, Hiroaki
  • Toda, Makoto
  • Takayanagi, Naoki

Abstract

A brake caliper structure of a straddle seat off-load vehicle includes a brake caliper having a caliper bracket, a caliper assembly connected to the caliper bracket by two connecting portions so that the caliper assembly can move relative to the caliper bracket to clamp a brake disc. One connecting portion includes a slide pin connected to the caliper assembly and slidably received in a guide hole in the caliper bracket for effectively guiding movement of the caliper assembly relative to the caliper bracket, and the other connecting portion includes a connecting screw as a fixed pin secured to the caliper bracket, and a rubber bushing as an elastic member disposed between the caliper assembly and the fixed pin for taking up the tilting of the brake disc.

IPC Classes  ?

15.

DISC BRAKE FOR A VEHICLE

      
Document Number 02502525
Status In Force
Filing Date 2005-03-29
Open to Public Date 2005-09-30
Grant Date 2010-06-29
Owner HITACHI ASTEMO, LTD. (Japan)
Inventor Iwasaki, Masaru

Abstract

A disc brake for a vehicle has a caliper body including an acting section having a cylinder hole and provided on a first side of a disc rotor, a reacting section on a second side of the disc rotor and a bridge section connecting the acting section with the reacting section, a pair of friction pads, a caliper bracket fixed to a vehicle body via a pair of mounting bolts, the caliper bracket having a mount hole for the mounting bolt and a torque receiving face and provided on both sides of the caliper bracket in a circumferential direction of the disc rotor and a pair of slide pins wherein a center of the mount hole of the mounting bolt and a center of the cylinder hole are located in an area defined between the first and second base lines.

IPC Classes  ?

  • F16D 65/02 - Braking members; Mounting thereof
  • B60T 1/06 - Arrangements of braking elements, i.e. of those parts where braking effect occurs acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission
  • B60T 17/00 - Component parts, details, or accessories of brake systems not covered by groups , or , or presenting other characteristic features
  • F16D 55/00 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
  • F16D 55/226 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially
  • F16D 65/092 - Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
  • F16D 65/095 - Pivots or supporting members therefor