KR100428138B1 - a structure for increasing brake force of disk brake of vehicles - Google Patents

a structure for increasing brake force of disk brake of vehicles Download PDF

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Publication number
KR100428138B1
KR100428138B1 KR10-2001-0050904A KR20010050904A KR100428138B1 KR 100428138 B1 KR100428138 B1 KR 100428138B1 KR 20010050904 A KR20010050904 A KR 20010050904A KR 100428138 B1 KR100428138 B1 KR 100428138B1
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KR
South Korea
Prior art keywords
brake
disk
piston
pad
force
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KR10-2001-0050904A
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Korean (ko)
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KR20030017853A (en
Inventor
이학곤
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현대자동차주식회사
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Priority to KR10-2001-0050904A priority Critical patent/KR100428138B1/en
Publication of KR20030017853A publication Critical patent/KR20030017853A/en
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Publication of KR100428138B1 publication Critical patent/KR100428138B1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
    • F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
    • F16D65/18—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D55/02—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
    • F16D55/22—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
    • F16D55/224—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
    • F16D55/225—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
    • F16D55/226—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, e.g. floating caliper disc brakes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2121/00—Type of actuator operation force
    • F16D2121/02—Fluid pressure
    • F16D2121/04—Fluid pressure acting on a piston-type actuator, e.g. for liquid pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/02—Fluid-pressure mechanisms
    • F16D2125/06—Pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2127/00—Auxiliary mechanisms
    • F16D2127/08—Self-amplifying or de-amplifying mechanisms
    • F16D2127/10—Self-amplifying or de-amplifying mechanisms having wedging elements

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

Abstract

본 발명은 자동차의 디스크브레이크 제동력 증가구조에 관한 것으로, 피스톤(5)과 패드(4)의 대응면에 디스크(6)의 회전방향으로 경사진 경사면(4a,5a)이 형성되는 구조로 이루어진다.The present invention relates to a disk brake braking force increase structure of an automobile, and has a structure in which inclined surfaces (4a, 5a) inclined in the rotational direction of the disk (6) are formed on the corresponding surfaces of the piston (5) and the pad (4).

따라서, 제동작용 중 상기 패드(4)가 피스톤(5)과 디스크(6)의 사이에 끼워져 피스톤(5)의 작동방향으로 추가적인 힘이 발생하게 됨으로써 마찰력이 증대되어 제동성능이 향상될 수 있게 된다.Therefore, the pad 4 is inserted between the piston 5 and the disk 6 during the braking action, so that an additional force is generated in the operating direction of the piston 5, thereby increasing the frictional force and improving braking performance. .

따라서, 작은 크기로도 동일한 제동성능을 구현할 수 있으므로 브레이크 시스템의 무게를 줄일 수 있으므로 스프링 하 중량의 감소로 차량의 진동 및 운동성능이 개선되는 부수적인 효과도 있게 된다.Therefore, since the same braking performance can be realized with a small size, the weight of the brake system can be reduced, so that the vibration and movement performance of the vehicle can be improved by reducing the weight under the spring.

Description

자동차의 디스크브레이크 제동력 증가구조{a structure for increasing brake force of disk brake of vehicles}Structure for increasing brake force of disk brake of vehicles

본 발명은 자동차의 디스크브레이크 제동력 증가구조에 관한 것으로, 특히 패드와 피스톤의 대응면 형상을 변경하여 기구학적으로 제동력을 증가시킬 수 있도록 된 자동차의 디스크브레이크 제동력 증가구조에 관한 것이다.The present invention relates to a disc brake braking force increasing structure of an automobile, and more particularly, to a disc brake braking force increasing structure of a vehicle that can increase the mechanical braking force by changing the shape of the corresponding surface of the pad and the piston.

일반적으로 자동차의 브레이크로는 디스크 타입 브레이크와 드럼 타입 브레이크가 많이 사용되고 있다.(이하 디스크 타입 브레이크는 디스크브레이크로, 드럼 타입 브레이크는 드럼브레이크로 칭한다.)Generally, disc brakes and drum brakes are commonly used as brakes for automobiles (hereinafter, disc brakes are referred to as disc brakes and drum brakes are referred to as drum brakes).

상기 디스크브레이크는 도 1에 도시된 바와 같이, 캘리퍼(1)에 가이드볼트(2)를 매개로 좌우방향으로는 슬라이딩 이동가능하고 상하방향(디스크의 회전방향)으로는 이동이 불가한 상태로 캐리어(3)가 장착되고, 이 캐리어(3) 내측에는 소정간격(디스크 삽입공간)을 두고 한 쌍의 패드(4)가 설치되며, 상기 캘리퍼(1)에는 상기 한쪽 패드(4)의 측부로 피스톤(5)이 내장되는 구조로 이루어져 있다.As shown in FIG. 1, the disc brake is slidably movable in the left and right directions via the guide bolt 2 to the caliper 1 and the carrier is not movable in the up and down direction (rotation direction of the disc). (3) is mounted, and a pair of pads (4) are provided inside the carrier (3) at predetermined intervals (disc insertion space), and the caliper (1) has a piston to the side of the one pad (4). (5) has a built-in structure.

따라서, 운전자가 브레이크페달을 밟음으로써 발생한 제동유압이 최종적으로 상기 피스톤(5)에 작용하여 이 피스톤(5)이 상기 패드(4)를 디스크에 밀어붙임으로써 마찰에 의한 제동작용이 일어나도록 되어 있었다.Therefore, the braking hydraulic pressure generated by the driver's stepping on the brake pedal finally acts on the piston 5, and the piston 5 pushes the pad 4 to the disk so that the braking action by friction occurs. .

한편, 상기 디스크브레이크는 제동안정성과 방열성이 드럼브레이크에 비하여 우수하지만, 구조적으로 마찰력이 작게 발생하여 제동성 측면에서는 드럼브레이크에 비하여 떨어지는 단점이 있다.On the other hand, the disc brake is excellent in detergency and heat dissipation compared to the drum brake, but has a disadvantage in that the friction is less structurally compared to the drum brake in terms of braking properties.

따라서, 버스나 대형 트럭등 강력한 제동력이 필요한 차량에는 잘 쓰이지 않으며 주로 승용차에 쓰이고 있다.Therefore, it is not used well in vehicles requiring strong braking force such as buses or heavy trucks, and is mainly used in passenger cars.

반면, 상기 드럼브레이크는 도 2에 도시된 바와 같이, 차륜과 동시에 회전되는 드럼(11)의 내부에 한쌍의 슈우(12)가 구비되어(트레일링슈우는 도시하지 않음), 이 슈우(12)가 유압에 의해 앵커핀(13)을 중심으로 회동하여 드럼(11)에 밀착됨으로써 제동작용이 이루어진다.On the other hand, as shown in FIG. 2, the drum brake is provided with a pair of shoes 12 inside the drum 11 that is simultaneously rotated with the wheels (a trailing shoe is not shown). By rotating the anchor pin 13 by the hydraulic pressure is in close contact with the drum 11 is made a braking action.

그런데, 이 드럼브레이크의 제동중에는 자기작동작용(self-energizing action)이 일어나 제동력이 증가하는 현상이 발생한다.However, during braking of the drum brake, a self-energizing action occurs to increase the braking force.

즉, 브레이크페달을 밟음으로써 상기 슈우(12;정확히는 리딩슈우)가 드럼(11)에 밀어붙여지면 마찰력에 의해 슈우(12)가 드럼(11)과 함께 회전하려고 하는 경향이 생기며, 이때문에 슈우(12)의 확장력(F)이 증가하여 보다 강력하게 드럼(11)을 압박하게 됨으로써 제동력이 증가하게 되는 것이다.That is, when the shoe 12 (exactly the leading shoe) is pushed onto the drum 11 by stepping on the brake pedal, the shoe 12 tends to rotate together with the drum 11 by the frictional force, which is why the shoe Expanding force (F) of (12) is to increase the braking force by pressing the drum 11 more powerfully.

따라서, 마찰면적이 동일한 경우에 드럼브레이크의 제동력이 디스크브레이크에 비하여 우수하다.Therefore, when the friction area is the same, the braking force of the drum brake is superior to that of the disc brake.

따라서, 본 발명은 상기와 같은 점을 감안하여 발명된 것으로서, 디스크브레이크에서도 드럼브레이크에서와 같이 자기작동작용이 발생하도록 함으로써 제동력을 증가시킬 수 있도록 된 자동차의 디스크브레이크 제동력 증가구조를 제공함에 그 목적이 있다.Therefore, the present invention has been invented in view of the above, and provides a disk brake braking force increasing structure of a vehicle which can increase the braking force by causing a magnetic acting action to occur even in a disk brake as in a drum brake. There is this.

도 1은 종래 디스크브레이크의 분해사시도,1 is an exploded perspective view of a conventional disc brake,

도 2는 드럼브레이크의 작동상태 설명도,2 is an explanatory diagram of an operation state of a drum brake;

도 3은 본 발명에 따른 디스크브레이크의 평단면도,3 is a plan sectional view of a disc brake according to the present invention;

도 4는 본 발명에 따른 디스크브레이크의 작동상태 설명도이다.4 is an explanatory view of an operating state of the disc brake according to the present invention.

*도면의 주요부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *

1 : 캘리퍼, 2 : 가이드볼트,1: Caliper, 2: Guide Bolt,

3 : 캐리어, 4 : 패드,3: carrier, 4: pad,

5 : 피스톤, 4a,5a : 경사면,6 : 디스크.5: piston, 4a, 5a: inclined surface, 6: disc.

상기와 같은 목적을 달성하기 위한 본 발명은, 캘리퍼에 설치되는 캐리어에 한쌍의 패드가 구비되고, 이 패드의 사이에 차륜과 동시에 회전되는 디스크가 위치되어 상기 캘리퍼에 내장된 피스톤의 가압력에 의해 패드가 디스크에 밀어붙여져 제동작용이 일어나도록 된 자동차의 디스크브레이크에 있어서, 상기 피스톤과 패드의 경사면에 디스크의 회전방향으로 경사진 경사면이 형성되는 것을 특징으로 한다.According to the present invention for achieving the above object, a pair of pads are provided on a carrier installed in a caliper, and a disk which is rotated at the same time as a wheel is positioned between the pads and the pads are pushed by the piston built in the caliper. In a disc brake of a vehicle in which the brake is pushed onto the disk to cause a braking action, the inclined surface inclined in the rotational direction of the disk is formed on the inclined surfaces of the piston and the pad.

따라서, 상기 피스톤과 패드의 사이에 자기작동작용이 발생하여 제동력이 증가할 수 있도록 되어 있다.Therefore, a magnetic actuation action is generated between the piston and the pad so that the braking force can be increased.

이하, 본 발명을 첨부된 예시도면을 참조하여 상세히 설명한다.Hereinafter, with reference to the accompanying drawings, the present invention will be described in detail.

도 3은 본 발명에 따른 디스크브레이크의 개략 평단면도(디스크를 중심으로 하여 양측부분은 서로 동일한 구조이므로 우측부분은 도시 생략하였다.)로서, 본 발명은 디스크(6)와 소정거리 이격된 상태의 패드(4)와, 이 패드(4)를 상기 디스크(6)로 밀어 붙이는 피스톤(5)을 구비한 디스크브레이크에 있어서, 상기 패드(4)와 피스톤(5)의 대응면에 각각 디스크(6)의 회전방향으로 기울어진 경사면(4a,5a)이 형성되는 구조로 이루어진다.즉, 상기 경사면(4a,5a)들은 앞쪽 단부 (도면상으로는 하부)가 뒤쪽 단부(도면상 상부)에 비하여 상기 디스크(6)에 가깝게 형성되어 있다.Figure 3 is a schematic plan sectional view of the disc brake according to the present invention (the right side is omitted because the two sides are the same structure with respect to the disc as a center), the present invention is spaced apart from the disc 6 by a predetermined distance In the disc brake provided with the pad 4 and the piston 5 which pushes the pad 4 to the said disk 6, the disc 6 is provided in the mating surface of the said pad 4 and the piston 5, respectively. The slanted surfaces 4a and 5a are formed to be inclined in the rotational direction of the disk. It is formed close to 6).

물론, 상기 패드(4)는 캘리퍼(1)에 가이드볼트(2)로 장착되는 캐리어(3)의 내측에 설치되어 수평방향 이동은 가능하나 디스크(6)의 회전방향으로의 이동은 불가능한 상태로 되어 있으며, 상기 피스톤(5)은 캘리퍼(1)의 한쪽 측부 즉, 상기 캐리어(3)가 설치된 부분의 측부에 내설되는 구조는 종래와 동일하다.Of course, the pad 4 is installed on the inside of the carrier 3 mounted to the caliper 1 as the guide bolt 2 so that horizontal movement is possible but movement in the rotational direction of the disk 6 is impossible. The piston 5 is built in one side of the caliper 1, that is, the side of the side in which the carrier 3 is installed is the same as in the prior art.

따라서, 다음과 같은 제동작용이 일어나게 된다.Therefore, the following braking action occurs.

도 4에 도시된 바와 같이, 차량이 주행중(상기 디스크(6)가 화살표방향으로 회전할 때) 운전자가 브레이크페달을 밟으면 제동유압을 전달받은 피스톤(5)이 힘 F1으로 패드(4)를 밀게 되며, 이때 피스톤(5)과 패드(4)의 마찰력 F2는 상기 패드(4)와 피스톤(5)의 경사면(4a,5a)방향으로 작용하게 된다.As shown in FIG. 4, when the driver presses the brake pedal while the vehicle is driving (when the disk 6 rotates in the direction of the arrow), the piston 5, which has received the braking hydraulic pressure, presses the pad 4 with the force F 1 . In this case, the friction force F 2 of the piston 5 and the pad 4 acts in the inclined surfaces 4a and 5a of the pad 4 and the piston 5.

따라서, 상기 마찰력 F2의 수평방향 분력 F3가 상기 피스톤(5)의 미는 힘 F1과 같은 방향으로 작용하여 패드(4)를 더욱 강력하게 디스크(6)에 밀어 붙여 줌으로써 마찰력을 증가시키게 된다.Therefore, the horizontal component force F 3 of the friction force F 2 acts in the same direction as the pushing force F 1 of the piston 5 to increase the friction force by pushing the pad 4 to the disk 6 more strongly. .

즉, 브레이크가 작동할 때 상기 경사면(4a,5a)을 따라 패드(4)가 피스톤(5)과 디스크(6) 사이에 끼이는 현상이 발생하여 패드(4)에 피스톤(5) 작동방향으로의 힘이 부가됨으로써 마찰력이 증가되는 것이다.That is, when the brake is operated, a phenomenon occurs in which the pad 4 is caught between the piston 5 and the disk 6 along the inclined surfaces 4a and 5a, so that the pad 4 is operated in the piston 5 direction. The frictional force is increased by adding the force of.

이와 같이 마찰력이 증가됨으로써 차량의 제동력이 증대될 수 있게 된다.As the frictional force is increased in this way, the braking force of the vehicle can be increased.

이상 설명한 바와 같이 본 발명에 다르면, 드럼브레이크에서 발생되는 자기작동작용을 디스크브레이크에서도 발생되도록 함으로써 패드가 디스크에 밀착되는 힘을 증대시켜 마찰 제동력을 증가시킬 수 있게 되었다.As described above, according to the present invention, it is possible to increase the frictional braking force by increasing the force in which the pad is in close contact with the disc by causing the magnetic acting action generated in the drum brake to also occur in the disc brake.

즉, 제동력을 증가시키기 위한 여타 장치들의 추가 설치나 브레이크시스템의 크기의 증대 없이도 제동력을 향상시킬 수 있게 된다.That is, the braking force can be improved without additional installation of other devices for increasing the braking force or an increase in the size of the brake system.

따라서, 동일한 제동력을 얻고자 할때 브레이크 시스템의 크기를 작게 설계할 수 있어서 차량의 중량을 감소시키고, 비용을 절감할 수 있게 된다.Therefore, when the same braking force is to be obtained, the size of the brake system can be designed smaller, thereby reducing the weight of the vehicle and reducing the cost.

또한, 브레이크 시스템의 중량이 감소됨으로써 서스펜션의 스프링 하 중량(unspring weight, unspring mass)이 감소되어 차량의 진동 및 운동성능이 개선되는 효과가 있게 된다.In addition, the weight of the brake system is reduced, thereby reducing the unspring weight (unspring weight) of the suspension, thereby improving the vibration and movement performance of the vehicle.

Claims (1)

캘리퍼(1)에 설치되는 캐리어(3)에 한쌍의 패드(4)가 구비되고, 이 패드(4)의 사이에 차륜과 동시에 회전되는 디스크(6)가 위치되어 상기 캘리퍼(1)에 내장된 피스톤(5)의 가압력에 의해 패드(4)가 디스크(6)에 밀어붙여져 제동작용이 일어나도록 된 자동차의 디스크브레이크에 있어서,A pair of pads 4 are provided on the carrier 3 installed in the caliper 1, and between the pads 4 a disk 6, which is rotated simultaneously with the wheels, is located in the caliper 1. In a disc brake of an automobile in which the pad 4 is pushed against the disc 6 by the pressing force of the piston 5 to cause a braking action, 상기 피스톤(5)과 패드(4)의 대응면에 디스크(6)의 회전방향으로 경사진 경사면(4a,5a)이 형성되는 것을 특징으로 하는 자동차의 디스크브레이크 제동력 증가구조.Disc brake braking force increasing structure of the vehicle, characterized in that the inclined surfaces (4a, 5a) inclined in the rotational direction of the disk (6) is formed on the corresponding surface of the piston (5) and the pad (4).
KR10-2001-0050904A 2001-08-23 2001-08-23 a structure for increasing brake force of disk brake of vehicles KR100428138B1 (en)

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