KR20020052314A - Disk brake of vehicle - Google Patents

Disk brake of vehicle Download PDF

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Publication number
KR20020052314A
KR20020052314A KR1020000081554A KR20000081554A KR20020052314A KR 20020052314 A KR20020052314 A KR 20020052314A KR 1020000081554 A KR1020000081554 A KR 1020000081554A KR 20000081554 A KR20000081554 A KR 20000081554A KR 20020052314 A KR20020052314 A KR 20020052314A
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KR
South Korea
Prior art keywords
brake
auxiliary
piston
disc
pad
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KR1020000081554A
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Korean (ko)
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KR100383989B1 (en
Inventor
성호학
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이계안
현대자동차주식회사
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Priority to KR10-2000-0081554A priority Critical patent/KR100383989B1/en
Publication of KR20020052314A publication Critical patent/KR20020052314A/en
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Publication of KR100383989B1 publication Critical patent/KR100383989B1/en

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D55/02Brakes 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
    • F16D55/22Brakes 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
    • F16D55/228Brakes 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 separate actuating member for each side
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2121/00Type of actuator operation force
    • F16D2121/02Fluid pressure
    • F16D2121/04Fluid pressure acting on a piston-type actuator, e.g. for liquid pressure

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

PURPOSE: A disk brake for a vehicle is provided to increase braking force in braking suddenly, and to improve traveling stability by enlarging the frictional area of a brake disk with pressing a brake pad and an auxiliary pad to the brake disk simultaneously. CONSTITUTION: A disk brake of a vehicle is composed of an auxiliary cylinder(11) installed in the outer periphery of a brake cylinder(2); a compression spring(12) installed in the auxiliary cylinder; an auxiliary piston(13) pressing a brake disk(3) by contacting to a piston(5) in pressing the piston to the brake disk, and compressing the compression spring; and an auxiliary pad(14) combined with the end of the auxiliary piston to generate braking force from friction by pressing the brake disk with the brake pad. The frictional area is enlarged with pressing the brake pad and the auxiliary pad to the brake disk at the same time in braking. Traveling stability is improved with increasing the braking force in braking suddenly.

Description

자동차의 디스크브레이크{disk brake of vehicle}Disk brake of a vehicle

본 발명은 자동차의 디스크브레이크에 관한 것으로, 특히 브레이크디스크에 가압되는 브레이크패드의 면적을 증가시켜 급제동시 주행의 안전성을 향상시키도록 된 자동차의 디스크브레이크에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc brake of a motor vehicle, and more particularly, to a disc brake of a motor vehicle, which increases the area of a brake pad pressed against the brake disc to improve driving safety during sudden braking.

일반적으로, 제동장치(Brake System)는 주행할 때 주로 사용하는 주브레이크와 자동차를 주차할 때 사용하는 주차브레이크로 분류되고, 상기 주브레이크는 브레이크페달의 조작에 의해 발생된 유압을 매개로 제동시키도록 된 유압식 브레이크와, 대형자동차등 큰 제동력을 필요로 하는 경우에 사용하도록 된 배력식 브레이크 및, 압축공기의 압력을 이용해 제동력을 발생시키도록 된 공기브레이크로 분류되며, 상기 유압식 브레이크에는 바퀴와 함께 회전되는 디스크의 양쪽에서 제동패드를 유압에 의해 눌러서 제동하도록 된 디스크브레이크가 있다.In general, a brake system is classified into a main brake mainly used for driving and a parking brake used for parking a car, and the main brake is configured to brake the hydraulic pressure generated by the operation of the brake pedal. Hydraulic brakes, heavy-duty brakes such as large vehicles, and air brakes for generating braking force by using compressed air pressure. There are disc brakes adapted to brake by hydraulic pressure on both sides of the rotating disk.

여기서, 상기 디스크브레이크의 일반적인 구성은 도 1내지 도 3에 도시된 바와 같이, 주철재질의 안장모양으로 형성되어 너클스핀들에 부착되도록 된 캘리퍼(1)와, 이 캘리퍼(1)의 양측부에 각각 부착되도록 된 2개의 브레이크실린더(2)와, 라이닝이 부착됨과 더불어 유압에 의해 브레이크디스크(3)에 압착되어 마찰력을 발생시키도록 된 브레이크패드(4)와, 이 브레이크패드(4)를 브레이크디스크(3)에 압착시켜 마찰력에 의한 제동력을 발생시키도록 된 피스톤(5)과, 이 피스톤(5)과 결합되어 상기 브레이크실린더(2)의 내부로 수분이나 먼지가 유입되는 것을 방지하도록 된 실린더부트(6)등으로 이루어져 있다.Here, the general configuration of the disc brake is shown in Figures 1 to 3, the caliper (1) formed in the saddle shape of the cast iron material to be attached to the knuckle spindles, and both sides of the caliper (1), respectively Two brake cylinders 2 to be attached, a brake pad 4 to which the lining is attached and pressed against the brake disc 3 by hydraulic pressure to generate frictional force, and the brake pad 4 A piston (5) pressed against (3) to generate a braking force due to frictional force; and a cylinder boot coupled with the piston (5) to prevent water or dust from entering the brake cylinder (2). (6) It consists of.

따라서, 운전자가 브레이크페달을 밟으면 브레이크오일에 유압이 발생되어 브레이크실린더(2)내에 있는 피스톤(5)이 도 3에 도시된 바와 같이 압출되고, 이피스톤(5)이 압출됨과 동시에 브레이크패드(4)가 차륜과 일체로 회전되는 브레이크디스크(3)에 압입되어 마찰력에 의한 제동력을 발생시키게 된다.Therefore, when the driver presses the brake pedal, hydraulic pressure is generated in the brake oil so that the piston 5 in the brake cylinder 2 is extruded as shown in FIG. 3, and the brake pad 4 is simultaneously extruded. ) Is pressed into the brake disc (3) which is integrally rotated with the wheel to generate a braking force by the friction force.

그러나, 상기와 같은 종래의 디스크브레이크는 일반제동시와 급제동시 브레이크디스크(3)에 접촉되는 브레이크패드(4)의 단면적이 모두 동일함으로 인해 위급상황을 올바르게 대처하지 못할 뿐만 아니라, 위급상황시 급격한 제동력을 발생시키기 위해서는 BAS(Brake Assist System)와 같은 별도의 장치를 장착시켜야만 하기 때문에 제조원가가 상승된다는 문제점이 있었다.However, the conventional disc brakes as described above do not correctly cope with emergencies due to the same cross-sectional area of the brake pads 4 contacting the brake discs 3 during normal braking and sudden braking. In order to generate a braking force, a separate device such as a brake assist system (BAS) has to be mounted, thereby increasing manufacturing costs.

이에 본 발명은 상기와 같은 문제점을 해소하기 위해 안출된 것으로, 브레이크실린더에 보조실린더 및 보조피스톤을 장착하면서 보조피스톤의 끝단에 보조패드를 장착하여, 브레이크의 작동시 브레이크패드와 함께 보조패드도 동시에 브레이크디스크에 가압되도록 함으로써 브레이크디스크에 가압되는 브레이크패드의 단면적을 증가시켜 급제동시 주행의 안전성을 향상시킬 수 있도록 된 자동차의 디스크브레이크를 제공함에 그 목적이 있다.Accordingly, the present invention has been made to solve the above problems, by mounting the auxiliary pad to the end of the auxiliary piston while mounting the auxiliary cylinder and the auxiliary piston in the brake cylinder, the auxiliary pad together with the brake pad at the time of brake operation It is an object of the present invention to provide a disc brake of a vehicle that can increase the cross-sectional area of the brake pad pressed on the brake disc to improve driving safety during sudden braking.

상기와 같은 목적을 달성하기 위한 본 발명의 디스크브레이크는, 브레이크실린더의 외주면에 설치되는 보조실린더와, 이 보조실린더의 내부에 설치되는 압축스프링과, 피스톤이 브레이크디스크를 가압하는 방향으로 이동될 때 상기 피스톤과 접촉되어 브레이크디스크를 가압하는 방향으로 작동되면서 상기 압축스프링을 압축시키도록 된 보조피스톤과, 이 보조피스톤의 단부에 결합되어 브레이크패드와 함께 브레이크디스크를 가압하여 마찰에 의한 제동력을 발생시키도록 된 보조패드가 더구비된 것을 특징으로 한다.Disc brake of the present invention for achieving the above object, the auxiliary cylinder is installed on the outer circumferential surface of the brake cylinder, the compression spring is installed inside the auxiliary cylinder, and when the piston is moved in the direction to press the brake disc An auxiliary piston adapted to compress the compression spring while being in contact with the piston to press the brake disc, and coupled to an end of the auxiliary piston to press the brake disc together with the brake pad to generate a braking force by friction. It is characterized in that the auxiliary pad is further provided.

도 1은 일반적으로 사용되는 디스크브레이크의 구성품을 설명하기 위한 분리사시도,1 is an exploded perspective view illustrating components of a disc brake generally used;

도 2는 디스크브레이크의 결합사시도,2 is a perspective view of the disc brake in combination;

도 3은 디스크브레이크의 작동원리를 설명하기 위한 개략적인 종단면도,Figure 3 is a schematic longitudinal cross-sectional view for explaining the operation principle of the disc brake,

도 4는 본 발명에 따른 디스크브레이크를 설명하기 위한 종단면도,4 is a longitudinal sectional view for explaining a disc brake according to the present invention;

도 5는 본 발명에 따른 디스크브레이크를 설명하기 위한 종단면도이다.5 is a longitudinal sectional view for explaining a disc brake according to the present invention.

< 도면의 주요 부분에 대한 부호의 설명 ><Description of Symbols for Main Parts of Drawings>

2 - 브레이크실린더 3 - 브레이크디스크2-Brake Cylinder 3-Brake Disc

4 - 브레이크패드 5 - 피스톤4-Brake Pads 5-Pistons

5a - 작동돌기 11 - 보조실린더5a-working projection 11-auxiliary cylinder

12 - 압축스프링 13 - 보조피스톤12-compression spring 13-auxiliary piston

13a - 접촉돌기 13b - 스프링가압부재13a-contact protrusion 13b-spring pressurizing member

14 - 보조패드14-Auxiliary Pad

이하 본 발명의 실시예를 첨부된 예시도면을 참조로 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 4는 본 발명에 따른 디스크브레이크를 설명하기 위한 종단면도로서, 종래구조와 동일한 부위에는 동일한 참조부호를 붙이면서 설명하기로 한다.Figure 4 is a longitudinal cross-sectional view for explaining the disc brake according to the present invention, will be described with the same reference numerals to the same parts as the conventional structure.

본 발명에 따른 디스크브레이크는 도 1과 도 2와 도 4에 도시된 바와 같이, 주철재질의 안장모양으로 형성되어 너클스핀들에 부착되도록 된 캘리퍼(1)와, 이 캘리퍼(1)의 양측부에 각각 부착되도록 된 2개의 브레이크실린더(2)와, 라이닝이 부착됨과 더불어 유압에 의해 브레이크디스크(3)에 압착되어 마찰력을 발생시키도록 된 브레이크패드(4)와, 이 브레이크패드(4)를 브레이크디스크(3)에 압착시켜 마찰력에 의한 제동력을 발생시키도록 된 피스톤(5)과, 이 피스톤(5)과 결합되어 상기 브레이크실린더(2)의 내부로 수분이나 먼지가 유입되는 것을 방지하도록 된 실린더부트(6)등으로 이루어져 있다.1 and 2 and 4, the disc brake according to the present invention is formed in a saddle shape of cast iron material and is attached to the knuckle spindles and the caliper (1) on both sides of the caliper (1). Two brake cylinders 2, each of which is to be attached to each other, a brake pad 4 to which the lining is attached, and which is pressed against the brake disc 3 by hydraulic pressure to generate a frictional force, and the brake pad 4 is braked. A piston (5) pressed against the disk (3) to generate a braking force due to frictional force, and a cylinder (5) coupled with the piston (5) to prevent water or dust from entering the brake cylinder (2); Boot (6).

또한, 본 발명에 따른 디스크브레이크는, 상기 브레이크실린더(2)의 외주면에 설치되는 보조실린더(11)와, 이 보조실린더(11)의 내부에 설치되는 압축스프링(12)과, 피스톤(5)이 브레이크디스크(3)를 가압하는 방향으로 이동될 때 상기 피스톤(5)과 접촉되어 브레이크디스크(3)를 가압하는 방향으로 작동되면서 상기 압축스프링(12)을 압축시키도록 된 보조피스톤(13)과, 이 보조피스톤(13)의 단부에 결합되어 브레이크패드(4)와 함께 브레이크디스크(3)를 가압하여 마찰에 의한 제동력을 발생시키도록 된 보조패드(14)가 더 구비되어 있다.In addition, the disc brake according to the present invention, the auxiliary cylinder 11 is provided on the outer peripheral surface of the brake cylinder (2), the compression spring 12 is provided in the interior of the auxiliary cylinder 11, the piston (5) When the brake disk 3 is moved in the pressing direction, the auxiliary piston 13 is brought into contact with the piston 5 to actuate the brake disk 3 to compress the compression spring 12. And an auxiliary pad 14 coupled to the end of the auxiliary piston 13 to press the brake disc 3 together with the brake pad 4 to generate a braking force by friction.

그리고, 상기 피스톤(5)의 외주면에는 소정크기의 작동돌기(5a)가 구비되어 있고, 상기 보조피스톤(13)의 내주면에는 피스톤(5)이 브레이크디스크(3)를 가압하는 방향으로 이동될 때 상기 작동돌기(5a)와 접촉되면서 보조피스톤(13)을 브레이크디스크(3)쪽으로 이동시키기 위한 접촉돌기(13a)가 구비되어 있다.And, the outer peripheral surface of the piston 5 is provided with a predetermined size of the operation projection (5a), the inner peripheral surface of the auxiliary piston 13 when the piston 5 is moved in the direction to press the brake disc (3) The contact protrusion 13a is provided for moving the auxiliary piston 13 toward the brake disc 3 while being in contact with the actuating protrusion 5a.

또한, 상기 보조실린더(11)내에 위치된 보조피스톤(13)의 일단에는, 상기 보조피스톤(13)이 브레이크디스크(3)를 가압하는 방향으로 이동될 때 압축스프링(12)을 가압하도록 된 스프링가압부재(13b)가 구비되어 있다.In addition, at one end of the auxiliary piston 13 located in the auxiliary cylinder 11, a spring adapted to press the compression spring 12 when the auxiliary piston 13 is moved in the direction of pressing the brake disc 3. The pressing member 13b is provided.

따라서, 상기 운전자가 브레이크페달을 밟아주게 되면 브레이크오일에 유압이 발생되어 브레이크실린더(2)내에 있는 피스톤(5)이 도 5에 도시된 바와 같이 압출되는데, 이때 상기 피스톤(5)의 외주면에 구비된 작동돌기(5a)가 보조피스톤(13)의 접촉돌기(13a)와 접촉되면서 상기 보조피스톤(13)도 동시에 압출되게 된다.Therefore, when the driver steps on the brake pedal, hydraulic pressure is generated in the brake oil, and the piston 5 in the brake cylinder 2 is extruded as shown in FIG. The auxiliary projection 13 is also extruded at the same time as the working projection (5a) is in contact with the contact projection (13a) of the auxiliary piston (13).

그리고, 상기 피스톤(5)과 보조피스톤(13)이 동시에 압출되어 브레이크패드(4)와 보조패드(14)가 브레이크디스크(3)에 압착되면, 도 3을 참조로 전술한 종래의 디스크브레이크보다 상기 브레이크디스크(3)의 마찰면적이 보조패드(14)의 마찰면적만큼 넓어지게 되며, 이로인해 급제동시 제동력이 상승되어 주행의 안전성을 향상되게 된다.When the piston 5 and the auxiliary piston 13 are extruded at the same time and the brake pad 4 and the auxiliary pad 14 are pressed onto the brake disc 3, the brake disc 4 and the auxiliary pad 14 are compressed to the brake disc 3, compared with the conventional disc brake described above with reference to FIG. The friction area of the brake disc 3 is widened by the friction area of the auxiliary pad 14, thereby increasing the braking force during sudden braking to improve driving safety.

이후, 운전자가 브레이크페달에 가압하고 있던 힘을 풀어주게 되면, 상기 피스톤(5)은 브레이크실린더(2)내의 오일압력에 의해 원래의 위치로 복원되게 되고, 이와 동시에 상기 보조피스톤(13)도 압축스프링(12)의 탄성복원력에 의해 원래의 위치로 탄성복원되게 된다.Then, when the driver releases the force applied to the brake pedal, the piston 5 is restored to its original position by the oil pressure in the brake cylinder 2, and at the same time the auxiliary piston 13 is also compressed. The elastic restoring force of the spring 12 makes it elastically restoring to its original position.

이상 설명한 바와 같이 본 발명에 의하면, 브레이크실린더의 외주면에 보조실린더가 설치되고, 이 보조실린더에는 피스톤과 연동되어 작동되는 보조피스톤이 설치되며, 이 보조피스톤에는 브레이크패드와 더불어 브레이크디스크에 압착되는 보조패드가 설치되어져, 브레이크의 작동시 상기 브레이크패드와 보조패드가 브레이크디스크에 동시에 압착되어 브레이크디스크의 마찰면적이 넓어지게 됨으로써 급제동시 제동력이 상승되게 되고, 이로인해 주행의 안전성을 향상되어 상품성이 증진되는 효과가 있게 된다.As described above, according to the present invention, an auxiliary cylinder is installed on the outer circumferential surface of the brake cylinder, and the auxiliary cylinder is provided with an auxiliary piston which is operated in cooperation with the piston, and the auxiliary piston is pressed by the brake disc together with the brake pad. Since the pad is installed, the brake pad and the auxiliary pad are simultaneously pressed onto the brake disc to widen the friction area of the brake disc, thereby increasing the braking force during sudden braking, thereby improving driving safety and improving productability. Become effective.

Claims (3)

브레이크실린더(2)의 외주면에 설치되는 보조실린더(11)와, 이 보조실린더(11)의 내부에 설치되는 압축스프링(12)과, 피스톤(5)이 브레이크디스크(3)를 가압하는 방향으로 이동될 때 상기 피스톤(5)과 접촉되어 브레이크디스크(3)를 가압하는 방향으로 작동되면서 상기 압축스프링(12)을 압축시키도록 된 보조피스톤(13)과, 이 보조피스톤(13)의 단부에 결합되어 브레이크패드(4)와 함께 브레이크디스크(3)를 가압하여 마찰에 의한 제동력을 발생시키도록 된 보조패드(14)가 더 구비된 자동차의 디스크브레이크.The auxiliary cylinder 11 provided on the outer circumferential surface of the brake cylinder 2, the compression spring 12 installed inside the auxiliary cylinder 11, and the piston 5 in the direction in which the brake disc 3 presses the brake cylinder 3; The auxiliary piston 13 which is in contact with the piston 5 when being moved and acts to press the brake disc 3 to compress the compression spring 12, and the end of the auxiliary piston 13 The disc brake of the vehicle further provided with an auxiliary pad 14 coupled to press the brake disc 3 together with the brake pad 4 to generate a braking force by friction. 제 1항에 있어서, 상기 피스톤(5)의 외주면에는 작동돌기(5a)가 구비되고, 상기 보조피스톤(13)의 내주면에는 피스톤(5)이 브레이크디스크(3)를 가압하는 방향으로 이동될 때 상기 작동돌기(5a)와 접촉되면서 보조피스톤(13)을 브레이크디스크(3)쪽으로 이동시키기 위한 접촉돌기(13a)가 구비된 것을 특징으로 하는 자동차의 디스크브레이크.The outer peripheral surface of the piston (5) is provided with an actuating projection (5a), the inner peripheral surface of the auxiliary piston 13 when the piston (5) is moved in the direction to press the brake disc (3) The disc brake of the vehicle, characterized in that provided with a contact projection (13a) for moving the auxiliary piston (13) toward the brake disk (3) in contact with the actuating projection (5a). 제 1항에 있어서, 상기 보조실린더(11)내에 위치된 보조피스톤(13)의 일단에는 보조피스톤(13)이 브레이크디스크(3)를 가압하는 방향으로 이동될 때 압축스프링(12)을 가압하도록 된 스프링가압부재(13b)가 구비된 것을 특징으로 하는 자동차의 디스크브레이크.The method of claim 1, wherein one end of the auxiliary piston (13) located in the auxiliary cylinder (11) to press the compression spring 12 when the auxiliary piston (13) is moved in the direction of pressing the brake disc (3) Disc brake of the vehicle, characterized in that the provided spring pressing member (13b).
KR10-2000-0081554A 2000-12-26 2000-12-26 disk brake of vehicle KR100383989B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105889373A (en) * 2016-06-01 2016-08-24 山东科大机电科技股份有限公司 Aqueous medium normally-closed disk type braking device with pressurizing cylinder
CN110953273A (en) * 2019-12-27 2020-04-03 湖北科技学院 Vehicle braking system with automatic braking clearance compensation function
CN114483842A (en) * 2022-01-12 2022-05-13 黄山菲英汽车零部件有限公司 High-efficient brake drum of compensable wearing and tearing piece of stopping

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105889373A (en) * 2016-06-01 2016-08-24 山东科大机电科技股份有限公司 Aqueous medium normally-closed disk type braking device with pressurizing cylinder
CN110953273A (en) * 2019-12-27 2020-04-03 湖北科技学院 Vehicle braking system with automatic braking clearance compensation function
CN110953273B (en) * 2019-12-27 2024-05-14 湖北科技学院 Vehicle braking system with automatic braking clearance compensation function
CN114483842A (en) * 2022-01-12 2022-05-13 黄山菲英汽车零部件有限公司 High-efficient brake drum of compensable wearing and tearing piece of stopping
CN114483842B (en) * 2022-01-12 2024-03-12 黄山菲英汽车零部件有限公司 High-efficiency brake drum brake sheet capable of compensating abrasion

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