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1. 发明申请

US20180215361A1 MASTER CYLINDER UNIT 审中-公开
公开(公告)号：US20180215361A1
公开(公告)日：2018-08-02
申请号：US15746592
申请日：2016-07-25
申请人： Hitachi Automotive Systems, Ltd.
发明人： Naganori KOSHIMIZU , Hiroshi OWADA , Chiharu NAKAZAWA , Ryohei MARUO
IPC分类号： B60T11/20 , B60T8/1769 , B60T8/40 , B60T11/236
CPC分类号： B60T11/20 , B60T7/042 , B60T8/00 , B60T8/17 , B60T8/1769 , B60T8/409 , B60T8/96 , B60T11/236 , B60T13/662 , B60T17/00 , B60T17/004
摘要： Provided is a master cylinder unit including a communication path that causes a master cylinder and a stroke simulator to communicate with each other. The stroke simulator includes a bottomed tube-shaped simulator piston and a simulator cylinder in which a simulator piston slides. The simulator piston is such that a bottom portion of the simulator cylinder and an opening portion of the simulator piston face each other. The communication path is open over an outer circumferential portion and an inner circumferential portion of the opening portion of the simulator piston, is connected to the bottom portion of the simulator cylinder, and is provided such that the communication path extends upward in a vertical direction from the bottom portion of the simulator cylinder as approaching to a pressure chamber.

2. 发明申请

US20200254989A1 Hydraulic Control Device and Brake System 审中-公开
公开(公告)号：US20200254989A1
公开(公告)日：2020-08-13
申请号：US15777020
申请日：2016-10-24
申请人： Hitachi Automotive Systems, Ltd.
发明人： Takahiro KAWAKAMI , Ryohei MARUO , Chiharu NAKAZAWA
IPC分类号： B60T13/16 , B60T8/40 , B60T7/04 , B60T8/17 , B60T13/62 , B60T13/68
摘要： Provided is a hydraulic pressure control device capable of improving ease of layout. The hydraulic pressure control device includes a stroke simulator unit and a hydraulic pressure unit. The stroke simulator unit includes a stroke simulator, a simulator connection liquid passage, and a simulator connection port. The stroke simulator is independent of a master cylinder configured to generate a hydraulic pressure through a brake pedal operation, and is configured to generate a reaction force against the brake pedal operation. The simulator connection liquid passage has one end side connected to the stroke simulator, and an opposite end side. The simulator connection port is provided on the opposite end side of the simulator connection liquid passage. The stroke simulator unit is mounted to the hydraulic pressure unit. The hydraulic pressure unit includes a unit connection port and a liquid passage. The unit connection port is connected to the simulator connection port, and overlaps the simulator connection port as viewed in an axial direction of the simulator connection port. The liquid passage is connected to the unit connection port. The hydraulic pressure unit is configured to generate a hydraulic pressure in a wheel cylinder of a vehicle via the liquid passage.

3. 发明申请

US20170349155A1 BRAKE UNIT 审中-公开
公开(公告)号：US20170349155A1
公开(公告)日：2017-12-07
申请号：US15683429
申请日：2017-08-22
申请人： HITACHI AUTOMOTIVE SYSTEMS, LTD.
发明人： Ryohei MARUO , Masayuki SAITO , Chiharu NAKAZAWA
IPC分类号： B60T13/14 , B60T8/36 , B60T11/16 , B60T17/02 , B60T13/74 , B60T8/40
CPC分类号： B60T13/143 , B60T8/368 , B60T8/3685 , B60T8/4081 , B60T11/16 , B60T13/745 , B60T17/02
摘要： A brake unit (1) includes: a master cylinder (2) unit which is fixed to a vehicle body, and which includes a master cylinder (2b) that is received within a first housing (20), and that is arranged to be interlocked with a brake pedal; and a pump unit (3) which is arranged to be driven by a motor (3), and which includes a second housing (30) within which a pump arranged to increase a wheel cylinder pressure is received, the master cylinder unit (2) and the pump unit (3) being integrally fixed through a mount (6) which is an elastic member.

4. 发明申请

US20190329748A1 Hydraulic Control Apparatus and Brake System 审中-公开
公开(公告)号：US20190329748A1
公开(公告)日：2019-10-31
申请号：US16310189
申请日：2017-06-15
申请人： Hitachi Automotive Systems, Ltd.
发明人： Takahiro KAWAKAMI , Ryohei MARUO , Chiharu NAKAZAWA
IPC分类号： B60T13/16 , B60T8/40 , B60T13/62
摘要： An object of the present invention is to provide a hydraulic control apparatus capable of layout flexibility. A hydraulics control apparatus includes a second unit (a hydraulic unit) and a first unit (a stroke simulator unit). The second unit includes a housing including a brake fluid passage therein, a positive pressure fluid passage and a back-pressure fluid passage (a unit connection fluid passage) each having one end side connected to the brake fluid passage, a positive pressure port and a back-pressure port (a unit connection port) provided on a surface of the housing and connected to the other end sides of the positive pressure fluid passage and the back-pressure fluid passage, a pump (a hydraulic source) provided inside the housing and configured to generate a hydraulic pressure in each of wheel cylinders of a vehicle via the brake fluid passage, and a motor attached to a surface of the housing and configured to actuate the pump. The first unit includes a stroke simulator. The stroke simulator is configured to generate a reaction force of the brake pedal operation. The first unit further includes a first connection fluid passage and a second connection fluid passage (a simulator connection fluid passage) each having one end side connected to the stroke simulator, and a simulator first connection port and a simulator second connection port (a simulator connection port).

5. 发明申请

US20190039590A1 Brake Apparatus, Brake System, and Master Cylinder 审中-公开
公开(公告)号：US20190039590A1
公开(公告)日：2019-02-07
申请号：US16076525
申请日：2017-02-03
申请人： Hitachi Automotive Systems, Ltd.
发明人： Ryohei MARUO , Chiharu NAKAZAWA , Hiroshi OWADA , Naganori KOSHIMIZU
IPC分类号： B60T17/22 , B60T11/16 , B60T13/58 , B60T8/40 , G01D5/14
摘要： Provided are a brake apparatus, a brake system, and a master cylinder that can accurately detect a movement amount of a piston while reducing manufacturing cost. A brake apparatus includes a master cylinder housing including a cylinder therein, a piston provided inside the cylinder and movable in a direction of an axial line of the cylinder, a magnet provided, inside the cylinder, partially in a circumferential direction of the piston, which is a direction around the axial line, and configured to be displaced according to a movement of the piston, a detection portion provided on the master cylinder housing and configured to detect a movement amount of the piston, and a rotation restriction mechanism provided inside the cylinder and configured to restrict a movement of the magnet in the circumferential direction.

6. 发明申请

US20170190328A1 Brake Apparatus 审中-公开
公开(公告)号：US20170190328A1
公开(公告)日：2017-07-06
申请号：US15308620
申请日：2015-04-23
申请人： HITACHI AUTOMOTIVE SYSTEMS ,LTD.
发明人： Chiharu NAKAZAWA , Ryohei MARUO
IPC分类号： B60T8/36 , B60T11/16 , B60T13/68 , B60T11/22
CPC分类号： B60T8/368 , B60T7/042 , B60T8/4081 , B60T11/16 , B60T11/165 , B60T11/22 , B60T13/146 , B60T13/662 , B60T13/686 , B60T2220/04
摘要： An object of the present invention is to provide a brake apparatus that allows low-cost attachment of a stroke sensor that detects a stroke amount of a brake pedal. The brake apparatus is configured in such a manner that the stroke sensor that detects an amount of an axial stroke of a piston is disposed between one side surface of a master cylinder housing and one side surface of a valve housing, and an output of the stroke sensor is transmitted via a through-hole formed on the valve housing when being transmitted to a control unit attached to an opposite side surface-side of the valve housing.

7. 发明申请

US20150314765A1 Brake Device 有权
标题翻译：制动装置
公开(公告)号：US20150314765A1
公开(公告)日：2015-11-05
申请号：US14651848
申请日：2013-12-09
申请人： HITACHI AUTOMOTIVE SYSTEMS, LTD.
发明人： Ryohei MARUO , Masayuki SAITO , Chiharu NAKAZAWA , Toshiya OOSAWA , Asahi WATANABE , Hiroki SONODA
IPC分类号： B60T13/14 , B60T8/40 , B60T13/68 , B60T7/04
CPC分类号： B60T7/042 , B60T8/17 , B60T8/4081 , B60T8/4827 , B60T13/146 , B60T13/662 , B60T13/686
摘要： The present invention provides a brake device that can improve the pressure-increasing response of wheel cylinder hydraulic pressure. The invention is provided with: a master cylinder (5) actuated by the driver operating the brake, the master cylinder (5) being connected to a wheel cylinder (8) via a first oil channel (11), and capable of increasing the wheel cylinder hydraulic pressure; and an auxiliary pressure-increasing part (auxiliary pressure-increasing part (106) and stroke simulator (27)) for assisting in the increasing of the wheel cylinder hydraulic pressure by the master cylinder (5) of the pump (7).
摘要翻译：本发明提供一种能够提高轮缸液压的增压响应的制动装置。本发明提供有：由驾驶员操纵制动器致动的主缸（5），主缸（5）通过第一油通道（11）连接到轮缸（8），并且能够增大车轮气缸液压; 和辅助增压部分（辅助增压部分（106）和行程模拟器（27）），用于辅助由泵（7）的主缸（5）增加轮缸液压。

8. 发明申请

US20210221345A1 Hydraulic Control Apparatus and Brake System 有权
公开(公告)号：US20210221345A1
公开(公告)日：2021-07-22
申请号：US16305652
申请日：2017-05-08
申请人： Hitachi Automotive Systems, Ltd.
发明人： Ryohei MARUO , Chiharu NAKAZAWA
IPC分类号： B60T8/40 , B60T13/14 , B60T13/58
摘要： The present invention provides a hydraulic control apparatus and a brake system capable of preventing or cutting down an increase in a size around a master cylinder. One aspect of the present invention includes a first hydraulic unit, a second hydraulic unit, and a stroke simulator unit. The first hydraulic unit includes a first input port connected to a supply port of a master cylinder, a first connection fluid passage connected to the first input port, a first pump configured to discharge brake fluid to the first connection fluid passage, and a first output port connected to the first connection fluid passage. The second hydraulic unit includes a second input port connected to the first output port, a second connection fluid passage connected to the second input port, a second pump configured to discharge the brake fluid to the second connection fluid passage, and a second output port having one end side connected to the second connection fluid passage and the other end side connected to a wheel cylinder. The stroke simulator unit is attached on the second hydraulic unit and includes a stroke simulator.

9. 发明申请

US20180201247A1 MASTER CYLINDER UNIT 审中-公开
公开(公告)号：US20180201247A1
公开(公告)日：2018-07-19
申请号：US15746436
申请日：2016-07-25
申请人： Hitachi Automotive Systems, Ltd.
发明人： Naganori KOSHIMIZU , Hiroshi OWADA , Toshiya OOSAWA , Ryohei MARUO
IPC分类号： B60T11/34 , B60T11/20 , B60T11/236 , B60T11/26 , B60T13/66 , B60T8/1755
摘要： Provided is a master cylinder unit including a simulator pressure chamber which communicates with a pressure chamber of a master cylinder and moves a simulator piston by means of an introduced fluid pressure; a biasing chamber in which a biasing mechanism biasing the simulator piston against a fluid pressure introduced into the simulator pressure chamber is disposed; a first seal member which partitions a simulator supply chamber, the simulator supply chamber, and the simulator pressure chamber communicating with a master supply chamber; and a second seal member which partitions the simulator supply chamber and the biasing chamber and allows a brake fluid to flow from the simulator supply chamber to the biasing chamber when a pressure difference occurs between the simulator supply chamber and the biasing chamber.

10. 发明申请

US20170182988A1 Brake Apparatus and Master Cylinder 审中-公开
公开(公告)号：US20170182988A1
公开(公告)日：2017-06-29
申请号：US15325159
申请日：2015-07-10
申请人： Hitachi Automotive Systems, Ltd.
发明人： Takahiro KAWAKAMI , Chiharu NAKAZAWA , Ryohei MARUO
IPC分类号： B60T8/36 , B60T11/16 , B60T13/68 , B60T11/22
CPC分类号： B60T8/368 , B60T7/042 , B60T8/4081 , B60T11/165 , B60T11/22 , B60T11/236 , B60T13/146 , B60T13/166 , B60T13/662 , B60T13/686 , B60T2220/04
摘要： An object of the present invention is to provide a brake apparatus capable of reducing a size and a weight. A brake apparatus according to the present invention includes a master cylinder housing including a first port that connects an inside and an outside of a cylinder, and a valve housing including an oil passage through which brake fluid introduced from a second port connected to the first port flows. One side of the master cylinder housing where one side surface thereof is located is attached to one side of the valve housing where one side surface thereof is located. The brake apparatus includes a connection portion that connects the first port and the second port between the one side surface of the master cylinder housing and the one side of the valve housing where the one side surface thereof is located. A space opened to respective outsides of the housings is formed around the connection portion

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