KR20120086554A - Brake for vehicles - Google Patents

Brake for vehicles Download PDF

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Publication number
KR20120086554A
KR20120086554A KR1020110007864A KR20110007864A KR20120086554A KR 20120086554 A KR20120086554 A KR 20120086554A KR 1020110007864 A KR1020110007864 A KR 1020110007864A KR 20110007864 A KR20110007864 A KR 20110007864A KR 20120086554 A KR20120086554 A KR 20120086554A
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KR
South Korea
Prior art keywords
cylinder
pedal
brake pedal
working fluid
braking
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KR1020110007864A
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Korean (ko)
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KR101666988B1 (en
Inventor
김필구
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현대모비스 주식회사
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Priority to KR1020110007864A priority Critical patent/KR101666988B1/en
Publication of KR20120086554A publication Critical patent/KR20120086554A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/58—Combined or convertible systems
    • B60T13/588—Combined or convertible systems both fluid and mechanical assistance or drive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B60T11/16—Master control, e.g. master cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T7/00—Brake-action initiating means
    • B60T7/02—Brake-action initiating means for personal initiation
    • B60T7/04—Brake-action initiating means for personal initiation foot actuated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T7/00—Brake-action initiating means
    • B60T7/02—Brake-action initiating means for personal initiation
    • B60T7/04—Brake-action initiating means for personal initiation foot actuated
    • B60T7/042—Brake-action initiating means for personal initiation foot actuated by electrical means, e.g. using travel or force sensors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—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
    • B60T8/34—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
    • B60T8/40—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 comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
    • B60T8/4072—Systems in which a driver input signal is used as a control signal for the additional fluid circuit which is normally used for braking
    • B60T8/4081—Systems with stroke simulating devices for driver input

Abstract

PURPOSE: A brake device for a vehicle is provided to improve the feeling of pedaling by operating the brake pedal of a vehicle through small power by supplying the sufficient power for braking. CONSTITUTION: A brake device for a vehicle comprises a brake pedal(10), a first cylinder(30), a pedal simulator(50), a restoring unit(70), an operation detecting sensor, and a second cylinder(84). The rod of the first cylinder is connected to the brake pedal and generates hydraulic force. The pedal simulator forms pedal feeling by supplying working fluid discharged through the first cylinder. The restoring unit is installed between the first cylinder and the pedal simulator and restores working fluid into the first cylinder. The operation detecting sensor detects the stroke of a brake pedal. The second cylinder generates braking force through the operation of an actuator.

Description

차량용 제동장치 {BRAKE FOR VEHICLES}Automotive Braking System {BRAKE FOR VEHICLES}

본 발명은 차량용 제동장치에 관한 것으로서, 특히, 작은 힘의 조작력으로 브레이크페달을 조작하여도 제동작동에 요구되는 충분한 힘이 공급되고 페달감을 향상시킬 수 있는 차량용 제동장치에 관한 것이다.
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle braking device, and more particularly, to a vehicle braking device capable of supplying sufficient force required for braking operation and improving a pedal feeling even when operating a brake pedal with a small force operating force.

차량용 제동장치는 차량 내부에 설치되는 브레이크페달과, 브레이크페달의 조작력을 증가시켜 마스터실린더에서 보자 큰 제동유압을 발생시키는 배력부와, 배력부에서 공급되는 제동유압을 각각의 구동휠에 균등하게 전달하는 ESC(Electronic Stability Control)와, ESC에서 전달되는 제동유압에 의해 구동휠을 구속하는 제동부를 포함한다.The braking device for the vehicle transmits the brake pedal installed inside the vehicle, the boosting unit to increase the operating force of the brake pedal to generate a large braking hydraulic pressure, and the braking hydraulic pressure supplied from the hydraulic power unit to each driving wheel. ESC (Electronic Stability Control) and a braking unit for restraining the driving wheel by the braking hydraulic pressure transmitted from the ESC.

운전자가 브레이크페달을 밟으면 배력부의 작동에 의해 제동유압이 배가되어 ESC에 전달되고, ESC에서 각각의 구동휠에 균등한 제동유압을 공급하므로 차량의 구동휠이 구속되면서 제동작동이 이루어지게 된다.When the driver presses the brake pedal, the braking hydraulic pressure is doubled and transferred to the ESC by the operation of the booster, and the ESC supplies an equal braking hydraulic pressure to each of the driving wheels, thereby restraining the driving wheels of the vehicle and performing braking operation.

브레이크페달과 차체 사이에는 리턴스프링이 개재되므로 운전자가 브레이크페달을 조작한 후에 브레이크페달로부터 발은 떼면 리턴스프링의 복원력에 의해 브레이크페달이 원상태로 복귀된다.
Since the return spring is interposed between the brake pedal and the body, when the driver releases the foot from the brake pedal after operating the brake pedal, the brake pedal returns to its original state by the restoring force of the return spring.

상기한 기술구성은 본 발명의 이해를 돕기 위한 배경기술로서, 본 발명이 속하는 기술분야에서 널리 알려진 종래기술을 의미하는 것은 아니다.The technical structure described above is a background technique for assisting the understanding of the present invention, and does not mean the prior art widely known in the technical field to which the present invention belongs.

일반적인 차량용 제동장치는 배력부에 충분한 조작력을 전달하기 위해 브레이크페달의 스트로크가 길어지기 때문에 브레이크페달의 조작이 반복되면 운전자가 쉽게 피로를 느낄 수 있는 문제점이 있다.In general, the brake device for a vehicle has a problem in that the driver may easily feel fatigue when the brake pedal is repeatedly operated because the stroke of the brake pedal is lengthened in order to transmit sufficient control force to the power unit.

또한, 브레이크페달의 스트로크를 줄이기 위해 브레이크페달에 유압장치를 설치하는 경우에는 브레이크페달의 조작이 완료되고 작동유체가 원상태로 복원되기 전에 다시 브레이크페달을 조작할 때에 잔류되는 작동유체에 의해 브레이크페달의 스트로크가 완전히 이루어지지 않아 페달감이 나빠지는 문제점이 있다.In addition, when a hydraulic device is installed in the brake pedal to reduce the stroke of the brake pedal, when the brake pedal is operated again after the operation of the brake pedal is completed and the working fluid is restored to its original state, There is a problem that the pedal is worse because the stroke is not made completely.

따라서 이를 개선할 필요성이 요청된다.Therefore, there is a need for improvement.

본 발명은 작은 힘의 조작력으로 브레이크페달을 조작하여도 제동작동에 요구되는 충분한 힘이 공급되고 페달감을 향상시킬 수 있는 차량용 제동장치를 제공하는데 그 목적이 있다.
It is an object of the present invention to provide a braking device for a vehicle that can supply a sufficient force required for braking operation and improve a feeling of pedal even when operating a brake pedal with a small force of operation force.

상기와 같은 목적을 달성하기 위하여 본 발명은, 브레이크페달; 상기 브레이크페달이 로드에 연결되고 유압을 발생시키는 제1실린더; 상기 제1실린더로부터 배출되는 작동유체가 공급되어 페달감을 형성하는 페달시뮬레이터; 및 상기 페달시뮬레이터와 상기 제1실린더 사이에 설치되고 작동유체가 상기 제1실린더로 회수되도록 하는 회수부를 포함하는 것을 특징으로 하는 차량용 제동장치를 제공한다.The present invention to achieve the above object, the brake pedal; A first cylinder connected to the brake pedal to generate hydraulic pressure; A pedal simulator configured to supply a working fluid discharged from the first cylinder to form a pedal feeling; And a recovery part installed between the pedal simulator and the first cylinder and allowing a working fluid to be recovered to the first cylinder.

또한, 본 발명은 상기 브레이크페달의 스트로크를 감지하는 작동감지센서; 상기 작동감지센서로부터 송신되는 신호에 따라 구동되는 액추에이터; 상기 액추에이터의 작동에 의해 제동유압을 발생시키는 제2실린더; 및 상기 제2실린더로부터 공급되는 제동유압에 의해 구동휠을 구속하는 제동부를 더 포함하는 것을 특징으로 한다.In addition, the present invention the operation sensor for detecting the stroke of the brake pedal; An actuator driven according to a signal transmitted from the operation detecting sensor; A second cylinder which generates a braking hydraulic pressure by the operation of the actuator; And a braking part for restraining the driving wheel by the braking hydraulic pressure supplied from the second cylinder.

또한, 상기 페달시뮬레이터는, 상기 제1실린더로부터 공급되는 작동유체가 유입되는 본체; 상기 본체에 설치되는 구동축; 작동유체에 의해 상기 구동축을 따라 슬라이딩되는 작동패널; 및 상기 작동패널과 상기 본체 사이에 개재되는 탄성부재를 포함하는 것을 특징으로 한다.The pedal simulator may further include a main body into which a working fluid supplied from the first cylinder flows; A drive shaft installed in the main body; An operating panel sliding along the drive shaft by a working fluid; And an elastic member interposed between the operation panel and the main body.

또한, 상기 회수부는, 상기 제1실린더와 상기 본체 사이에 설치되는 회수라인; 및 상기 회수라인에 설치되는 체크밸브를 포함하는 것을 특징으로 한다.
The recovery unit may further include a recovery line installed between the first cylinder and the main body; And a check valve installed in the recovery line.

본 발명에 따른 차량용 제동장치는 브레이크페달의 스트로크에 따라 작동되는 구동부에 의해 ESC에 제동유압이 공급되므로 운전자가 작은 힘으로 브레이크페달을 조작하여도 충분한 제동유압이 공급될 수 있어 제동작동이 반복될 때에 브레이크페달의 조작에 의한 운전자의 피로를 감소시킬 수 있는 이점이 있다.In the vehicle braking device according to the present invention, since the braking hydraulic pressure is supplied to the ESC by the driving unit operated according to the stroke of the brake pedal, sufficient braking hydraulic pressure can be supplied even if the driver operates the brake pedal with a small force so that the braking operation can be repeated. In this case, there is an advantage that the driver's fatigue due to the operation of the brake pedal can be reduced.

또한, 본 발명에 따른 차량용 제동장치는 브레이크페달의 조작이 완료된 후에 제동유압을 발생시키는 작동유체의 복귀가 짧은 시간 내에 이루어지므로 제동작동이 연속하여 이루어질 때에 잔류되는 작동유체에 의해 페달감이 나빠지는 것을 방지할 수 있는 이점이 있다.
In addition, the braking device for a vehicle according to the present invention, after the operation of the brake pedal is completed, the return of the working fluid for generating the braking hydraulic pressure is made within a short time, the pedal feeling is worsened by the remaining working fluid when the braking operation is continuously performed There is an advantage that can be prevented.

도 1은 본 발명의 일 실시예에 따른 차량용 제동장치가 도시된 구성도이다.
도 2는 본 발명의 일 실시예에 따른 차량용 제동장치가 도시된 블록도이다.
도 3은 본 발명의 일 실시예에 따른 차량용 제동장치가 도시된 작동 상태도이다.1 is a block diagram showing a vehicle braking apparatus according to an embodiment of the present invention.
2 is a block diagram showing a vehicle braking apparatus according to an embodiment of the present invention.
3 is an operating state diagram showing a vehicle braking apparatus according to an embodiment of the present invention.

이하, 첨부된 도면들을 참조하여 본 발명에 따른 차량용 제동장치의 일 실시예를 설명한다.Hereinafter, with reference to the accompanying drawings will be described an embodiment of a vehicle braking apparatus according to the present invention.

이러한 과정에서 도면에 도시된 선들의 두께나 구성요소의 크기 등은 설명의 명료성과 편의상 과장되게 도시되어 있을 수 있다.In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

또한, 후술되는 용어들은 본 발명에서의 기능을 고려하여 정의된 용어들로써, 이는 사용자, 운용자의 의도 또는 관례에 따라 달라질 수 있다.In addition, the terms described below are terms defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator.

그러므로 이러한 용어들에 대한 정의는 본 명세서 전반에 걸친 내용을 토대로 내려져야 할 것이다.Therefore, definitions of these terms should be made based on the contents throughout this specification.

도 1은 본 발명의 일 실시예에 따른 차량용 제동장치가 도시된 구성도이고, 도 2는 본 발명의 일 실시예에 따른 차량용 제동장치가 도시된 블록도이고, 도 3은 본 발명의 일 실시예에 따른 차량용 제동장치가 도시된 작동 상태도이다.1 is a block diagram showing a vehicle braking apparatus according to an embodiment of the present invention, Figure 2 is a block diagram showing a vehicle braking apparatus according to an embodiment of the present invention, Figure 3 is an embodiment of the present invention The operating state diagram of a vehicle braking device according to an example is shown.

도 1 내지 도 3을 참조하면, 본 발명의 일 실시예에 따른 차량용 제동장치는 브레이크페달(10)과, 브레이크페달(10)이 로드(32)에 연결되고 유압을 발생시키는 제1실린더(30)와, 제1실린더(30)로부터 배출되는 작동유체가 공급되어 페달감을 형성하는 페달시뮬레이터(50)와, 페달시뮬레이터(50)와 제1실린더(30) 사이에 설치되고 작동유체가 제1실린더(30)로 회수되도록 하는 회수부(70)를 포함한다.1 to 3, the brake device for a vehicle according to an exemplary embodiment of the present invention includes a brake pedal 10 and a first cylinder 30 in which the brake pedal 10 is connected to the rod 32 and generates hydraulic pressure. ), A pedal simulator 50 which supplies a working fluid discharged from the first cylinder 30 to form a pedal feeling, and is installed between the pedal simulator 50 and the first cylinder 30 and the working fluid is provided in the first cylinder. And a recovery unit 70 for recovery to 30.

운전자가 브레이크페달(10)을 밟으면 로드(32)가 실린더 내부로 삽입되면서 제1실린더(30)에 충진된 작동유체가 페달시뮬레이터(50)로 압송되면서 페달감이 형성된다.When the driver presses the brake pedal 10, the rod 32 is inserted into the cylinder, and the working fluid filled in the first cylinder 30 is pressurized to the pedal simulator 50 to form a pedal feeling.

운전자가 브레이크페달(10)의 조작을 완료하여 브레이크페달(10)로부터 발을 떼면 페달시뮬레이터(50)에 공급되었던 작동유체가 공급라인(20)을 역류하여 제1실린더(30) 내부로 회수된다.When the driver completes the operation of the brake pedal 10 and releases the brake pedal 10, the working fluid supplied to the pedal simulator 50 flows back to the supply line 20 and is recovered into the first cylinder 30. .

또한, 페달시뮬레이터(50)로부터 배출되는 작동유체는 회수부(70)를 지나 제1실린더(30) 내부로 회수되므로 두 개의 유압라인을 따라 페달시뮬레이터(50)로부터 배출되는 작동유체가 제1실린더(30)로 회수된다.In addition, since the working fluid discharged from the pedal simulator 50 is recovered through the recovery unit 70 into the first cylinder 30, the working fluid discharged from the pedal simulator 50 along two hydraulic lines is discharged from the first cylinder. Recovered to (30).

따라서 브레이크페달(10)의 작동이 완료된 후에 페달시뮬레이터(50)로부터 제1실린더(30)로 회수되는 작동유체의 이동속도가 빨라짐을 알 수 있다.Therefore, it can be seen that the speed of movement of the working fluid recovered from the pedal simulator 50 to the first cylinder 30 after the operation of the brake pedal 10 is completed is increased.

회수되는 작동유체의 이동속도가 빨라지므로 연속하여 제동작동을 행할 때에 페달시뮬레이터(50)에 잔존하는 작동유체에 의해 브레이크페달(10)의 페달감이 변화되는 것을 방지할 수 있게 된다.Since the moving speed of the recovered working fluid is increased, it is possible to prevent the pedal feeling of the brake pedal 10 from being changed by the working fluid remaining in the pedal simulator 50 when the braking operation is continuously performed.

제1실린더(30)와 페달시뮬레이터(50) 사이에는 공급라인(20)이 설치되고, 공급라인(20)에는 제1밸브(22)가 설치된다.A supply line 20 is installed between the first cylinder 30 and the pedal simulator 50, and a first valve 22 is installed in the supply line 20.

브레이크페달(10)이 조작되면 제1밸브(22)가 개방되므로 제1실린더(30) 내부로 삽입되면 로드(32)에 의해 제1실린더(30) 내부에 충진된 작동유체는 공급라인(20)을 따라 페달시뮬레이터(50)로 이동된다.Since the first valve 22 is opened when the brake pedal 10 is operated, the working fluid filled in the first cylinder 30 by the rod 32 is inserted into the first cylinder 30 when the brake pedal 10 is operated. Is moved to the pedal simulator 50.

제동작동이 완료되어 운전자가 브레이크페달(10)로부터 발을 떼면 리턴스프링(34)에 의해 브레이크페달(10)이 원상태로 복원되며, 페달시뮬레이터(50)로부터 배출되는 작동유체는 공급라인(20) 및 회수부(70)를 통해 제1실린더(30)로 회수된다.When the braking operation is completed and the driver releases the brake pedal 10, the brake pedal 10 is restored to its original state by the return spring 34, and the working fluid discharged from the pedal simulator 50 is supplied to the supply line 20. And it is recovered to the first cylinder 30 through the recovery unit 70.

리턴스프링(34)에 의해 브레이크페달(10)이 복원되는 속도와 작동유체가 제1실린더(30) 내부로 회수되는 속도가 서로 다르기 때문에 작동유체가 완전히 회수되기 전에 다시 제동작동을 행하면 리턴스프링(34)이 압축되면서 제동작동이 이루어지고, 회수되는 작동유체에 의해 유압이 발생되면서 브레이크페달(10)의 페달감이 변화될 수 있다.Since the speed at which the brake pedal 10 is restored by the return spring 34 and the speed at which the working fluid is recovered into the first cylinder 30 are different from each other, when the braking operation is performed again before the working fluid is completely recovered, the return spring ( 34) is compressed, the braking operation is performed, and the pedal feeling of the brake pedal 10 can be changed as the hydraulic pressure is generated by the recovered working fluid.

본 실시예는 페달시뮬레이터(50)로부터 회수되는 작동유체가 공급라인(20) 및 회수부(70)로 이루어지는 두 개의 유압라인을 통해 제1실린더(30)로 회수되므로 작동유체의 회수속도와 브레이크페달(10)의 복원속도의 차이를 줄이게 된다.In this embodiment, since the working fluid recovered from the pedal simulator 50 is recovered to the first cylinder 30 through two hydraulic lines including the supply line 20 and the recovering unit 70, the recovery speed of the working fluid and the brake are maintained. The difference in the recovery speed of the pedal 10 is reduced.

따라서 제동작동이 연속하여 이루어질 때에 브레이크페달(10)의 페달감이 변화되는 것을 방지할 수 있어 브레이크페달(10)의 페달감이 향상되는 효과가 나타나게 된다.Therefore, when the braking operation is performed continuously, it is possible to prevent the pedal feeling of the brake pedal 10 from being changed, thereby improving the pedal feeling of the brake pedal 10.

또한, 본 실시예는 브레이크페달(10)의 스트로크를 감지하는 작동감지센서(90)와, 작동감지센서(90)로부터 송신되는 신호에 따라 구동되는 액추에이터(82)와, 액추에이터(82)의 작동에 의해 제동유압을 발생시키는 제2실린더(84)와, 제2실린더(84)로부터 공급되는 제동유압에 의해 구동휠(89)을 구속하는 제동부(88)를 더 포함한다.In addition, the present embodiment is the operation detection sensor 90 for detecting the stroke of the brake pedal 10, the actuator 82 driven in accordance with the signal transmitted from the operation detection sensor 90, and the operation of the actuator 82 It further comprises a second cylinder (84) for generating a braking hydraulic pressure by means of, and a braking portion (88) for restraining the drive wheel (89) by the braking hydraulic pressure supplied from the second cylinder (84).

운전자가 브레이크페달(10)을 조작하면 작동감지센서(90)로부터 송신되는 신호에 따라 액추에이터(82)가 구동되므로 제2실린더(84)에서 제동유압이 발생되고, 제2실린더(84)에서 공급되는 제동유압에 의해 제동부(88)가 작동되어 구동휠(89)이 구속되면서 제동작동이 이루어지게 된다.When the driver operates the brake pedal 10, the actuator 82 is driven according to a signal transmitted from the operation detection sensor 90, so that a braking hydraulic pressure is generated in the second cylinder 84, and supplied from the second cylinder 84. The braking unit 88 is operated by the braking hydraulic pressure which is applied, and the driving wheel 89 is restrained to perform the braking operation.

제2실린더(84)와 제동부(88) 사이에는 제동유압을 각각의 구동휠(89)에 설치되는 제동부(88)에 균등하게 배분하는 ESC(86)가 설치되고, 제1실린더(30)와 제2실린더(84) 사이에 설치되는 공급라인(20)에는 제2밸브(24)가 설치된다.Between the second cylinder 84 and the braking portion 88, an ESC 86 is provided to evenly distribute the braking hydraulic pressure to the braking portions 88 provided on the respective driving wheels 89, and the first cylinder 30 ) And a second valve 24 is installed in the supply line 20 installed between the second cylinder 84.

따라서 작동감지센서(90)에서 브레이크페달(10)의 스트로크가 감지되면 제어부(100)에서 송신되는 구동신호에 따라 제1밸브(22)가 개방되고 제2밸브(24)가 폐쇄되며 액추에이터(82)의 구동에 의해 ESC(86) 및 제동부(88)에 제동유압이 공급된다.Therefore, when the stroke of the brake pedal 10 is detected by the operation detection sensor 90, the first valve 22 is opened, the second valve 24 is closed, and the actuator 82 is transmitted according to the driving signal transmitted from the controller 100. The braking hydraulic pressure is supplied to the ESC 86 and the braking unit 88 by the driving of.

페달시뮬레이터(50)는 제1실린더(30)로부터 공급되는 작동유체가 유입되는 본체(52)와, 본체(52)에 설치되는 구동축(54)과, 작동유체에 의해 구동축(54)을 따라 슬라이딩되는 작동패널(56)과, 작동패널(56)과 본체(52) 사이에 개재되는 탄성부재(58)를 포함한다.The pedal simulator 50 slides along the drive shaft 54 by the main body 52 into which the working fluid supplied from the first cylinder 30 flows, the drive shaft 54 installed in the main body 52, and the working fluid. And an elastic member 58 interposed between the operating panel 56 and the main body 52.

브레이크페달(10)의 작동에 의해 작동유체가 공급라인(20)을 따라 본체(52) 내부에 유입되면 탄성부재(58)가 압축되면서 작동패널(56)이 구동축(54)을 따라 슬라이딩되면서 페달감을 형성하게 된다.When the working fluid flows into the main body 52 along the supply line 20 by the operation of the brake pedal 10, the elastic member 58 is compressed and the operating panel 56 slides along the drive shaft 54. It will form a sense.

운전자가 브레이크페달(10)로부터 발을 떼면 탄성부재(58)의 복원력에 의해 작동패널(56)이 원상태로 구동축(54)을 따라 슬라이딩된다.When the driver releases the foot from the brake pedal 10, the operating panel 56 is slid along the drive shaft 54 by the restoring force of the elastic member 58.

따라서 본체(52)로부터 배출되는 작동유체는 공급라인(20) 및 회수부(70)를 따라 제1실린더(30)로 회수된다.Therefore, the working fluid discharged from the main body 52 is recovered to the first cylinder 30 along the supply line 20 and the recovery unit 70.

회수부(70)는 제1실린더(30)와 본체(52) 사이에 설치되는 회수라인(72)과, 회수라인(72)에 설치되는 체크밸브(74)를 포함하므로 제1실린더(30)로부터 작동유체가 본체(52)로 공급될 때에는 체크밸브(74)에 의해 회수라인(72)이 차단되므로 공급라인(20)만을 따라 작동유체가 본체(52) 내부로 공급된다.
The recovery unit 70 includes a recovery line 72 installed between the first cylinder 30 and the main body 52 and a check valve 74 installed in the recovery line 72, so that the first cylinder 30 Since the recovery line 72 is blocked by the check valve 74 when the working fluid is supplied from the main body 52, the working fluid is supplied into the main body 52 only along the supply line 20.

상기와 같이 구성된 본 발명의 일 실시예에 따른 차량용 제동장치의 동작을 살펴보면 다음과 같다.Looking at the operation of the vehicle braking device according to an embodiment of the present invention configured as described above are as follows.

운전자가 브레이크페달(10)을 밟으면 제1실린더(30) 내부로 로드(32)가 삽입되면서 작동유체를 공급라인(20)을 따라 페달시뮬레이터(50)의 본체(52) 내부로 이동시킨다.When the driver presses the brake pedal 10, the rod 32 is inserted into the first cylinder 30 to move the working fluid into the main body 52 of the pedal simulator 50 along the supply line 20.

작동감지센서(90)로부터 브레이크페달(10)의 작동이 감지되면 제어부(100)로부터 구동신호가 송신되어 제1밸브(22)는 개방되고 제2밸브(24)는 폐쇄되므로 제1실린더(30)에서 배출되는 작동유체는 제1밸브(22)를 지나 본체(52) 내부로 유입된다.When the operation of the brake pedal 10 is detected from the operation detection sensor 90, a driving signal is transmitted from the control unit 100 to open the first valve 22 and the second valve 24 to close the first cylinder 30. The working fluid discharged from) flows into the body 52 through the first valve 22.

이때, 회수라인(72)에 설치되는 체크밸브(74)는 회수라인(72)을 차단하므로 제1실린더(30)로부터 배출되는 작동유체는 공급라인(20)을 따라 본체(52) 내부로 유입되고, 작동패널(56)을 가압하여 탄성부재(58)를 압축시키므로 일정한 페달감을 형성하게 된다.At this time, the check valve 74 installed in the recovery line 72 blocks the recovery line 72 so that the working fluid discharged from the first cylinder 30 flows into the main body 52 along the supply line 20. Then, by pressing the operating panel 56 to compress the elastic member 58 to form a constant pedal feeling.

이후에, 제동작동이 종료되어 운전자가 브레이크페달(10)로부터 발을 떼면 탄성부재(58)의 복원력에 의해 작동패널(56)이 구동축(54)을 따라 슬라이딩되면서 원상태로 이동되고, 작동유체는 공급라인(20) 및 회수라인(72)을 따라 제2실린더(84) 내부로 회수된다.Thereafter, when the braking operation is terminated and the driver releases the foot from the brake pedal 10, the operating panel 56 is slid along the drive shaft 54 by the restoring force of the elastic member 58, and the working fluid is moved. It is recovered into the second cylinder 84 along the supply line 20 and the recovery line 72.

이때, 제1실린더(30)로 회수되는 작동유체는 공급라인(20) 및 회수라인(72)으로 이루어지는 두 개의 유압라인을 따라 회수되므로 작동유체의 회수에 소요되는 시간이 단축되는 효과가 나타나게 된다.At this time, since the working fluid recovered to the first cylinder 30 is recovered along two hydraulic lines including the supply line 20 and the recovery line 72, the time required for the recovery of the working fluid is shortened. .

따라서 제동작동이 연속하여 이루어질 때에 제1실린더(30)로 작동유체가 완전히 회수되기 전에 제동작동이 개시되어 발생되는 페달감의 변화를 방지할 수 있게 된다.Therefore, when the braking operation is performed continuously, it is possible to prevent the change of the pedal feeling generated by starting the braking operation before the working fluid is completely recovered to the first cylinder 30.

또한, 작동감지센서(90)로부터 브레이크페달(10)의 작동이 감지되면 제어부(100)로부터 송신되는 구동신호에 의해 액추에이터(82)로부터 암(82a)이 돌출되어 제2실린더(84) 내부로 삽입되면서 제동유압이 발생된다.In addition, when the operation of the brake pedal 10 is detected by the operation detecting sensor 90, the arm 82a protrudes from the actuator 82 by the driving signal transmitted from the control unit 100 to the inside of the second cylinder 84. Brake hydraulic pressure is generated as it is inserted.

상기한 바와 같이 브레이크페달(10)의 조작력과 상관없이 별도의 액추에이터(82)에 의해 제동유압이 발생된다.As described above, the braking hydraulic pressure is generated by a separate actuator 82 regardless of the operating force of the brake pedal 10.

이로써, 작은 힘의 조작력으로 브레이크페달을 조작하여도 제동작동에 요구되는 충분한 힘이 공급되고 페달감을 향상시킬 수 있는 차량용 제동장치를 제공할 수 있게 된다.
Thereby, even if the brake pedal is operated with a small force of operation force, it is possible to provide a vehicle braking device which is supplied with sufficient force required for braking operation and can improve the feeling of pedaling.

본 발명은 도면에 도시되는 일 실시예를 참고로 하여 설명되었으나, 이는 예시적인 것에 불과하며, 당해 기술이 속하는 분야에서 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 타 실시예가 가능하다는 점을 이해할 것이다.While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. .

또한, 차량용 제동장치를 예로 들어 설명하였으나, 이는 예시적인 것에 불과하며, 차량이 아닌 다른 제품에도 본 발명의 제동장치가 사용될 수 있다.In addition, the vehicle braking device has been described as an example, but this is merely illustrative, and the braking device of the present invention may be used in a product other than the vehicle.

따라서 본 발명의 진정한 기술적 보호범위는 아래의 특허청구범위에 의해서 정하여져야 할 것이다.
Accordingly, the true scope of the present invention should be determined by the following claims.

10 : 브레이크페달 20 : 공급라인
22 : 제1밸브 24 : 제2밸브
30 : 제1실린더 32 : 로드
50 : 페달시뮬레이터 52 : 본체
54 : 구동축 56 : 작동패널
58 : 탄성부재 70 : 회수부
72 : 회수라인 74 : 체크밸브
82 : 액추에이터 82a : 암
84 : 제2실린더 86 : ESC
88 : 제동부 89 : 구동휠
90 : 작동감지센서 100 : 제어부10: brake pedal 20: supply line
22: first valve 24: second valve
30: first cylinder 32: rod
50: pedal simulator 52: main body
54: drive shaft 56: operation panel
58: elastic member 70: recovery part
72: recovery line 74: check valve
82: actuator 82a: arm
84: second cylinder 86: ESC
88: braking part 89: driving wheel
90: operation detection sensor 100: control unit

Claims (4)

브레이크페달;
상기 브레이크페달이 로드에 연결되고 유압을 발생시키는 제1실린더;
상기 제1실린더로부터 배출되는 작동유체가 공급되어 페달감을 형성하는 페달시뮬레이터; 및
상기 페달시뮬레이터와 상기 제1실린더 사이에 설치되고 작동유체가 상기 제1실린더로 회수되도록 하는 회수부를 포함하는 것을 특징으로 하는 차량용 제동장치.
Brake pedal;
A first cylinder connected to the brake pedal to generate hydraulic pressure;
A pedal simulator configured to supply a working fluid discharged from the first cylinder to form a pedal feeling; And
And a recovery unit installed between the pedal simulator and the first cylinder and allowing a working fluid to be recovered to the first cylinder.
제1항에 있어서,
상기 브레이크페달의 스트로크를 감지하는 작동감지센서;
상기 작동감지센서로부터 송신되는 신호에 따라 구동되는 액추에이터;
상기 액추에이터의 작동에 의해 제동유압을 발생시키는 제2실린더; 및
상기 제2실린더로부터 공급되는 제동유압에 의해 구동휠을 구속하는 제동부를 더 포함하는 것을 특징으로 하는 차량용 제동장치.
The method of claim 1,
An operation detecting sensor for detecting a stroke of the brake pedal;
An actuator driven according to a signal transmitted from the operation detecting sensor;
A second cylinder which generates a braking hydraulic pressure by the operation of the actuator; And
The braking device for a vehicle, characterized in that it further comprises a braking portion for restraining the driving wheel by the braking hydraulic pressure supplied from the second cylinder.
제1항에 있어서, 상기 페달시뮬레이터는,
상기 제1실린더로부터 공급되는 작동유체가 유입되는 본체;
상기 본체에 설치되는 구동축;
작동유체에 의해 상기 구동축을 따라 슬라이딩되는 작동패널; 및
상기 작동패널과 상기 본체 사이에 개재되는 탄성부재를 포함하는 것을 특징으로 하는 차량용 제동장치.
The method of claim 1, wherein the pedal simulator,
A main body into which the working fluid supplied from the first cylinder flows;
A drive shaft installed in the main body;
An operating panel sliding along the drive shaft by a working fluid; And
And a resilient member interposed between the operating panel and the main body.
제3항에 있어서, 상기 회수부는,
상기 제1실린더와 상기 본체 사이에 설치되는 회수라인; 및
상기 회수라인에 설치되는 체크밸브를 포함하는 것을 특징으로 하는 차량용 제동장치.
The method of claim 3, wherein the recovery unit,
A recovery line installed between the first cylinder and the main body; And
A vehicle braking device comprising a check valve installed in the recovery line.
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104309599A (en) * 2014-09-26 2015-01-28 同济大学 Electro-hydraulic brake system
CN108016421A (en) * 2017-12-13 2018-05-11 宁波拓普集团股份有限公司 A kind of automobile electrically-controlled brake apparatus
CN113844455A (en) * 2021-08-27 2021-12-28 奇瑞汽车股份有限公司 Method and device for braking a vehicle while the driver is tired
KR20220021984A (en) 2020-08-14 2022-02-23 현대자동차주식회사 Break system

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JPH05262217A (en) * 1991-11-07 1993-10-12 Tokico Ltd Control device for brake fluid pressure
KR20090069532A (en) * 2007-12-26 2009-07-01 두산인프라코어 주식회사 Hydraulic control system of disk brake apparatus for forklift truck
KR20100113729A (en) * 2009-04-14 2010-10-22 현대모비스 주식회사 Regenerative brake system

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JPH05262217A (en) * 1991-11-07 1993-10-12 Tokico Ltd Control device for brake fluid pressure
KR20090069532A (en) * 2007-12-26 2009-07-01 두산인프라코어 주식회사 Hydraulic control system of disk brake apparatus for forklift truck
KR20100113729A (en) * 2009-04-14 2010-10-22 현대모비스 주식회사 Regenerative brake system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104309599A (en) * 2014-09-26 2015-01-28 同济大学 Electro-hydraulic brake system
CN108016421A (en) * 2017-12-13 2018-05-11 宁波拓普集团股份有限公司 A kind of automobile electrically-controlled brake apparatus
CN108016421B (en) * 2017-12-13 2023-11-21 宁波拓普集团股份有限公司 Electric control braking device for automobile
KR20220021984A (en) 2020-08-14 2022-02-23 현대자동차주식회사 Break system
CN113844455A (en) * 2021-08-27 2021-12-28 奇瑞汽车股份有限公司 Method and device for braking a vehicle while the driver is tired
CN113844455B (en) * 2021-08-27 2023-04-14 奇瑞汽车股份有限公司 Method and device for braking a vehicle while the driver is tired

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