IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0666307
(2004-10-29)
|
등록번호 |
US-7552978
(2009-07-09)
|
국제출원번호 |
PCT/JP04/016488
(2004-10-29)
|
§371/§102 date |
20070426
(20070426)
|
국제공개번호 |
WO06/046318
(2006-05-04)
|
발명자
/ 주소 |
- Yokoyama, Atsushi
- Tanimichi, Taisetsu
- Kuragaki, Satoru
- Osawa, Yukihiro
- Kubo, Jun
- Inoue, Yukihiko
- Iwasaki, Katsuya
- Sasaki, Mitsuo
- Hibi, Tsutomu
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
4 인용 특허 :
5 |
초록
▼
A brake system that provides a good pedal feel, that assists stepping force of a driver by a small motor, and that can control braking force of wheels individually. The brake system comprises a first actuator (5) for increasing a liquid pressure in a master cylinder (2) by driving torque of a motor
A brake system that provides a good pedal feel, that assists stepping force of a driver by a small motor, and that can control braking force of wheels individually. The brake system comprises a first actuator (5) for increasing a liquid pressure in a master cylinder (2) by driving torque of a motor (51), and a second actuator (6) capable of driving a brake generating mechanism (3) without transmitting power to the master cylinder (2), wherein the actuators (5, 6) to be driven are switched depending on the operation of a brake pedal (1). The first and second actuators (5, 6) are connected to hydraulic piping (4f, 4r), and a pressurized oil is supplied to the brake generating mechanism (3) through hydraulic valve means (63f, 63r, . . . 65rr).
대표청구항
▼
The invention claimed is: 1. A control apparatus for a brake system comprising an actuator control unit detecting a displacement of a brake pedal which displaces in accordance with an operating force of a driver for controlling an actuator, and the actuator controlled by the actuator control unit f
The invention claimed is: 1. A control apparatus for a brake system comprising an actuator control unit detecting a displacement of a brake pedal which displaces in accordance with an operating force of a driver for controlling an actuator, and the actuator controlled by the actuator control unit for producing a brake force applied to a brake force generating mechanism, characterized in that the actuator control unit is composed of an electric actuator controller and a hydraulic actuator controller, the actuator is composed of a first actuator and a second actuator composed of a hydraulic pump and a hydraulic valve means, controlled by the hydraulic actuator controller, the first actuator is arranged in a hydraulic pipe line connected to the brake force generating mechanism, and composed of a hydraulic pressure supply means which is operated by an electric drive source controlled by the electric actuator controller, and the hydraulic valve means, the hydraulic pressure supply means is connected to the hydraulic pipe line in parallel with the hydraulic pump for feeding a hydraulic pressure to the brake force generating mechanism by way of the hydraulic valve means, and the hydraulic pump is connected to the hydraulic pipe in parallel with the hydraulic supply means so as to feed a hydraulic pressure into the brake force generating mechanism, such that the hydraulic pressure is supplied to the brake force generating mechanism through one of the hydraulic pressure supply means and the hydraulic pump depending on a degree of displacement of the brake pedal, wherein the hydraulic valve means opens to supply the hydraulic pressure to the brake force generating mechanism while the hydraulic pump stops when the hydraulic pressure is supplied to the brake force generating mechanism through the hydraulic pressure supply means, and the hydraulic pump is driven to supply the hydraulic pressure to the brake force generating mechanism while the hydraulic valve means closes when the hydraulic pressure is supplied to the brake force generating mechanism through the hydraulic pressure supply means. 2. A control apparatus for a brake system as set fort in claim 1, characterized in that the hydraulic valve means is composed of at least two hydraulic valves adapted to be opened and closed under electronic control. 3. A control apparatus for a brake system as set forth in claim 1, characterized in that the electric actuator control unit and the hydraulic actuator control unit are operated being changed over in accordance with a degree of displacement of the brake pedal, or a time when a change of the brake pedal exceeds a predetermined value. 4. A control apparatus for a brake system as set forth in claim 1, characterized in that the first brake actuator drives the brake force generating mechanism for at least one of a plurality of wheels incorporated in a vehicle, and a second brake actuator drives the brake force generating mechanism different from the first brake actuator. 5. A control apparatus for a brake system as set forth in clam 1, characterized by further comprising an electric accumulator for feeding electric powers to the first brake actuator, and an electric accumulator for feeding electric power to the second brake actuator. 6. A control apparatus for a brake system comprising an actuator control unit detecting a displacement of a brake pedal which displaces in accordance with an operating force of the driver, for controlling an actuator, and the actuator controlled by the actuator control unit, for producing a brake force applied to a brake force generating mechanism, characterized in that the actuator control unit is composed of an electric actuator controller and a hydraulic actuator controller, the electric actuator controller delivers an electric assist force signal in accordance with a change of the brake pedal, carries out time integration when the electric assist force signal exceeds a first rated electric assist force signal value, so as to calculate an integrated value, and sets the electrical assist force signal value to a first rated electric assist force signal value when the integrated value exceeds a predetermined value, or sets the electric assist force signal value, at once, to the first rated electric assist force signal value when the electric assist force signal reaches a second rated electric assist force signal value, and the hydraulic actuator controller produces a hydraulic assist force signal in accordance with a change of the brake pedal when the electric actuator controller delivers an electric assist force signal set to the first rated electric assist force signal value. 7. A control apparatus for a brake system as set forth in claim 6, characterized in that the actuator control unit interrupts the control of the actuator depending upon the electric actuator force signal when the electric actuator controller delivers the first rated electric assist force signal, and controls the actuator in accordance with a hydraulic actuator signal delivered from the hydraulic actuator controller. 8. A control apparatus for a brake system as set forth in claim 6, characterized in that the first brake actuator drives the brake force generating mechanism for at least one of a plurality of wheels incorporated in a vehicle, and a second brake actuator drives the brake force generating mechanism different from the first brake actuator. 9. A control apparatus for a brake system as set forth in claim 6, characterized by an electric accumulator for feeding electric power to the first brake actuator, and an electric accumulator for feeding electric power to the second brake actuator. 10. A brake system comprising a brake pedal which displaces in accordance with an operating force of the driver, an actuator control unit detecting a displacement of the brake pedal for controlling an actuator, and the actuator controlled by the actuator control unit for producing a brake force applied to a brake force generating mechanism, characterized in that the actuator control unit is composed of an electric actuator controller and a hydraulic actuator controller, the actuator is composed of a first actuator and a second actuator composed of a hydraulic pump and a hydraulic valve means, controlled by the hydraulic actuator controller, the first actuator is arranged in a hydraulic pipe line connected to the brake force generating mechanism and composed of a hydraulic pressure supply means which is operated by an electric drive source controlled by the electric actuator controller, and the hydraulic valve means, the hydraulic pressure supply means is connected to the hydraulic pipe line in parallel with the hydraulic pump so as to feed a hydraulic pressure to the brake force generating mechanism by way of the hydraulic valve, and the hydraulic pump is connected to the hydraulic pipe line in parallel with the hydraulic pressure supply means so as to feed a hydraulic pressure to the brake force generating mechanism by way of the hydraulic valve means, the hydraulic valve means is operated so as to feed a hydraulic pressure to the brake force generating mechanism from either one of the hydraulic pressure supply means and the hydraulic pump, the electric actuator controller delivers an electric assist force signal in accordance with a change of the brake pedal, carries out time integration so as to calculate an integrated value when the electric assist force signal exceeds a first rated electric assist force signal value, and sets the electric assist force signal value to the first rated electric assist signal value when the integrated value exceeds a predetermined value, or sets the electric assist force signal value, at once, to the first rated assist force signal value when the electric assist force signal reaches a second rated electric assist force signal value, the hydraulic actuator controller delivers a hydraulic assist force signal in accordance with a change of the brake pedal when the electric actuator controller delivers an electric assist force signal set to the first rated assist force signal value, and the actuator control unit interrupts the control of the first actuator depending upon the electric assist force signal when the electric actuator controller delivers the first rated electric assist signal, and controls the second actuator in accordance with a hydraulic actuator signal delivered from the hydraulic actuator controller.
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