KR100309825B1 - Drum brake system by rotational friction - Google Patents

Drum brake system by rotational friction Download PDF

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Publication number
KR100309825B1
KR100309825B1 KR1019970071481A KR19970071481A KR100309825B1 KR 100309825 B1 KR100309825 B1 KR 100309825B1 KR 1019970071481 A KR1019970071481 A KR 1019970071481A KR 19970071481 A KR19970071481 A KR 19970071481A KR 100309825 B1 KR100309825 B1 KR 100309825B1
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KR
South Korea
Prior art keywords
drum
brake
brake shoe
brake system
wheel cylinder
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KR1019970071481A
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Korean (ko)
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KR19990052039A (en
Inventor
한 배
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이계안
현대자동차주식회사
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Priority to KR1019970071481A priority Critical patent/KR100309825B1/en
Publication of KR19990052039A publication Critical patent/KR19990052039A/en
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    • 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
    • F16D51/00—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like
    • F16D51/46—Self-tightening brakes with pivoted brake shoes, i.e. the braked member increases the braking action
    • F16D51/48—Self-tightening brakes with pivoted brake shoes, i.e. the braked member increases the braking action with two linked or directly-interacting brake shoes
    • F16D51/50—Self-tightening brakes with pivoted brake shoes, i.e. the braked member increases the braking action with two linked or directly-interacting brake shoes mechanically actuated
    • 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
    • F16D51/00—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like
    • F16D51/16—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis
    • F16D51/18—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes
    • F16D51/20—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots
    • F16D51/24—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots fluid actuated
    • 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
    • F16D2121/18—Electric or magnetic
    • F16D2121/24—Electric or magnetic using motors

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

Abstract

PURPOSE: A drum brake system by using rotational friction is provided to prevent slip by friction between a drum and a brake shoe with reversing the brake shoe against the drum in braking, and to increase braking force by pressing the drum to the pad forcibly. CONSTITUTION: A drum brake system is composed of an operating part actuating the brake system, a driving part driven by receiving power from the operating part, and a brake shoe(12) operated by the driving part to stop a drum(10). A driving terminal is connected to fixing terminals in stepping on a brake pedal, and a moving ring(33) is rotated clockwise with rotating pinion gears(32a,32b) in supplying power to motors. The brake shoe is contacted to the drum with rotating counterclockwise to improve braking force and prevent slip.

Description

회전 마찰력을 이용한 드럼식 브레이크 시스템Drum Braking System Using Rotary Friction

본 발명은 회전 마찰력을 이용한 드럼식 브레이크 시스템에 관한 것으로서, 특히 차량을 정지시키기 위하여 브레이크를 작동시 드럼과 마찰되는 패드가 서로 반대방향으로 회전하면서 마찰될 수 있도록 하여 브레이크의 제동력을 상승시킬 수 있도록 한 회전 마찰력을 이용한 드럼식 브레이크 시스템에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drum-type brake system using a rotating friction force, and in particular, in order to stop a vehicle, the drum and the pad, which are rubbed with the drum, can be rubbed while rotating in opposite directions to increase the braking force of the brake. A drum type brake system using rotational frictional force.

일반적으로 차량에는 엔진 등 동력장치에서 발생된 동력을 전달받아 차량이노면을 마찰하면서 주행할 수 있도록 좌우측 전후방에 상기 동력장치와 연결된 휠을 설치하였다.In general, the vehicle is provided with wheels connected to the power unit in the left and right front and rear to receive the power generated from the power unit such as the engine so as to run while rubbing the road surface.

또한 차량의 주행을 멈출 수 있도록 상기 휠에는 브레이크 장치를 설치하였는데, 상기 브레이크 장치는 디스크식과 드럼식으로 나누어진다.In addition, a brake device is provided on the wheel to stop the driving of the vehicle. The brake device is divided into a disc type and a drum type.

이들 중 드럼식은 휠의 좌우측에 휠 실린더와 어저스터에 의해 작동되는 라이닝을 설치하고, 상기 라이닝과 휠을 감싸서 덮을 수 있도록 드럼을 설치하여 상기 휠 실린더의 작동시 상기 라이닝과 드럼의 내측면이 마찰되면서 제동력이 발생되어 차량을 정지할 수 있도록 하였는 바, 이와 같은 종래의 드럼식 브레이크의 구조가 도 1에 도시되어 있다.Among them, the drum type has a lining operated by a wheel cylinder and an adjuster on the left and right sides of the wheel, and a drum is installed to cover and cover the lining and the wheel so that the inner surfaces of the lining and the drum are rubbed when the wheel cylinder is operated. While the braking force is generated to stop the vehicle, the structure of the conventional drum brake is shown in FIG. 1.

도 1에 도시된 바와 같이, 종래의 드럼식 브레이크는 휠과 함께 회전하는 드럼(10)의 내측 상단에는 휠 실린더(11)를 배치하고, 드럼(10)의 내주 양편으로 브레이크 슈(12)를 배치하며, 상기 브레이크 슈(12)의 각 상단과 하단은 각각 휠 실린더(11)와 링크(13)에 연결되는 동시에 그 외측면에는 패드(14)를 부착시킨 구조로 이루어져 있다.As shown in FIG. 1, in the conventional drum type brake, a wheel cylinder 11 is disposed on an inner upper end of a drum 10 rotating together with a wheel, and brake shoes 12 are disposed on both inner circumferences of the drum 10. The upper and lower ends of the brake shoe 12 are connected to the wheel cylinder 11 and the link 13, respectively, and have a structure in which a pad 14 is attached to an outer surface thereof.

상기와 같이 구성된 종래의 드럼식 브레이크의 작동상태를 살펴보면 다음과 같다.Looking at the operating state of the conventional drum brake configured as described above are as follows.

차량의 주행 중 운전자가 브레이크 페달을 밟으면 유압이 상기 휠 실린더 (11)로 공급되어 브레이크 슈(12)가 하단 링크(13) 고정부위를 중심으로 하여 그 상단이 양쪽으로 벌어지게 되고, 상기 브레이크 슈(12)에 부착된 패드(14)가 드럼 (10)의 내측면과 마찰되므로서, 드럼(10)이 정지하면서 차량의 제동이 이루어지게 되는 것이다.When the driver presses the brake pedal while the vehicle is running, hydraulic pressure is supplied to the wheel cylinder 11 so that the brake shoe 12 is opened at both ends with the lower link 13 fixed portion as the center, and the brake shoe The pad 14 attached to the 12 is rubbed with the inner surface of the drum 10, so that the drum 10 is stopped while braking the vehicle.

그러나, 상기와 같이 구성된 종래의 드럼식 브레이크에서는 브레이크 슈가 고정된 상태에서 바깥쪽으로 벌어져 패드가 드럼의 내측면과 마찰되는 마찰력을 이용하여 드럼을 멈추게 하였는데, 이로 인해 드럼의 내측면과 마찰될 때에 발생되는 마찰하중이 고정되어 있는 브레이크 슈에 전달되고, 따라서 마찰시에 브레이크 슈가 유동되면서 미세한 슬립현상이 발생되기 때문에 압착력이 저하되어 차량 제동시 약간 밀리는 현상이 발생되는 문제가 있었다.However, in the conventional drum brake configured as described above, the brake shoe is opened outward to stop the drum by using a friction force that rubs the pad with the inner surface of the drum, which is generated when the drum is rubbed with the inner surface of the drum. Since the friction load is transmitted to the fixed brake shoe, the brake shoe flows at the time of friction, and thus a fine slip phenomenon occurs, so that the compressive force is lowered and the vehicle is slightly pushed when braking the vehicle.

따라서, 본 발명은 상기한 종래의 문제점을 해결하기 위하여 안출한 것으로서, 브레이크의 작동시 브레이크 슈가 드럼과 반대방향으로 역회전하면서 드럼과 마찰될 수 있도록 하여 슬림현상을 방지하고, 드럼과 패드의 강제 압착능력을 증대시킬 수 있도록 하여 제동능력을 상승시킬 수 있도록 한 회전 마찰력을 이용한 드럼식 브레이크 시스템을 제공하는데 그 목적이 있는 것이다.Accordingly, the present invention has been made in order to solve the above-mentioned conventional problems, and when the brake is operated, the brake shoe can be rubbed with the drum while rotating in the opposite direction to the drum, thereby preventing the slim phenomenon and forcing the drum and the pad. It is an object of the present invention to provide a drum type brake system using a rotating frictional force that can increase the pressing capacity so that the braking capacity can be increased.

상기 목적을 달성하기 위하여 본 발명은 사용자가 직접 작동하여 브레이크 시스템이 작동되도록 하는 작동부와, 상기 작동부에 의해 동력을 전달받아 구동되는 구동부와, 상기 구동부에 의해 작동되어 드럼을 멈추게 하는 브레이크 슈로 구성한 것을 특징으로 한다.In order to achieve the above object, the present invention provides an operating unit for a user to operate the brake system directly, a driving unit driven by the driving unit, and a brake shoe operated by the driving unit to stop the drum. It is characterized by the configuration.

도 1은 종래의 드럼식 브레이크 시스템을 나타내는 정면도1 is a front view showing a conventional drum type brake system

도 2는 본 발명에 따른 드럼식 브레이크 시스템을 나타내는 개략적인 측면도2 is a schematic side view showing a drum brake system according to the present invention;

도 3a,3b는 본 발명에 따른 드럼식 브레이크 시스템의 작동상태를 나타내는 정면도Figure 3a, 3b is a front view showing the operating state of the drum brake system according to the present invention

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>

10 : 드럼 11 : 휠 실린더10 drum 11: wheel cylinder

12 : 브레이크슈 13 : 링크12: break shoe 13: link

14 : 패드 15 : 브레이크 페달14: pad 15: brake pedal

16 : 시동 스위치16: start switch

21 : 감지센서 22 : 실린더21: sensor 22: cylinder

23a,23b : 상하부 고정단자 24 : 가동단자23a, 23b: upper and lower fixed terminal 24: movable terminal

25 : 스프링 26 : 릴레이25: spring 26: relay

27 : 트랜지스터27: transistor

31a,31b : 모터 32a,32b : 피니언 기어31a, 31b: Motor 32a, 32b: Pinion Gear

33 : 무빙 링 34 : 치형부33: moving ring 34: teeth

35a,35b : 연결대 36 : 힌지35a, 35b: connecting rod 36: hinge

이하, 첨부된 도면을 참조하여 본 발명을 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도 2 및 3a,3b에 도시한 바와 같이, 본 발명은 차량의 실내에 사용자가 직접 브레이크 시스템을 작동할 수 있도록 작동부를 설치한다.As shown in Figures 2 and 3a, 3b, the present invention is installed in the interior of the vehicle so that the user can operate the brake system directly.

상기 작동부는 차량의 실내에 브레이크 페달(15)을 설치하고, 상기 브레이크 페달(15)의 후방에는 브레이크 페달(15)이 작동되는 것을 감지하는 감지센서(21)를 설치한다.The operation unit installs a brake pedal 15 in the interior of the vehicle, and the rear of the brake pedal 15 is installed with a detection sensor 21 for detecting that the brake pedal 15 is operated.

상기 감지센서(21)는 브레이크 페달(15)의 후방에 실린더(22)를 설치하되, 상기 실린더(22)의 후방 상하에 상하부 고정단자(23a),(23b)를 설치하고, 실린더(22)의 내부에는 브레이크 페달(15)과 연결되어 브레이크 페달(15)의 작동시 후방으로 이동되면서 상기 상하부 고정단자(23a),(23b)가 서로 통전될 수 있도록 접점되는 가동단자(24)를 설치하며, 상기 실린더(22)의 후방 내측면과 가동단자(24)의 사이에는 스프링(25)을 설치하여 브레이크 페달(15)의 복귀시 가동단자(24)도 복귀될 수 있도록 한 구조로 이루어져 있다.The sensing sensor 21 is provided with a cylinder 22 at the rear of the brake pedal 15, the upper and lower fixed terminals (23a, 23b) are installed at the rear of the cylinder 22, the cylinder 22 In the interior thereof is connected to the brake pedal 15 is moved to the rear during operation of the brake pedal 15 while the upper and lower fixed terminals 23a, 23b to install a movable terminal 24 to be in contact with each other so as to energize each other and In addition, a spring 25 is installed between the rear inner surface of the cylinder 22 and the movable terminal 24 so that the movable terminal 24 may also be returned when the brake pedal 15 returns.

상기 상부 고정단자(23a)는 시동 스위치(16)와 연결되어 차량의 시동과 동시에 전원을 공급받을 수 있도록 하고, 상기 하부 고정단자(23b)는 릴레이(26)와 트랜지스터(27)에 연결하여 가동단자(24)에 의해 통전시 상기 릴레이(26)와 트랜지스터(27)에 전원이 공급되도록 하였다.The upper fixed terminal 23a is connected to the start switch 16 to be supplied with power at the same time as the vehicle is started, and the lower fixed terminal 23b is connected to the relay 26 and the transistor 27 to operate. Power is supplied to the relay 26 and the transistor 27 when the terminal 24 is energized.

드럼(10)의 내측으로는 상기 작동부로부터 전원을 공급받아 작동되는 구동부를 설치한다.Inner side of the drum 10 is provided with a driving unit that is operated by receiving power from the operating unit.

상기 구동부는 2개의 모터(31a),(31b) 및 그 축에 장착되는 각각의 피니언 기어(32a),(32b)와, 양편의 브레이크 슈(12)와 연결되는 무빙 링(33)으로 구성된다.The drive unit is composed of two motors 31a, 31b and respective pinion gears 32a, 32b mounted on the shaft thereof, and a moving ring 33 connected to the brake shoes 12 on both sides. .

상기 모터(31a),(31b)는 기존의 휠 실린더(11), 브레이크 슈(12), 링크(13)등이 지지되는 베킹판(도시하지 않음)에 고정되며, 상기 무빙 링(33)은 브레이크 슈(12)의 중앙에 배치되고, 그 내주면에는 치형부(34)가 형성되어 상기 2개의 피니언 기어(32a),(32b)에 외접된다.The motors 31a and 31b are fixed to a backing plate (not shown) on which the existing wheel cylinder 11, the brake shoe 12, the link 13, and the like are supported, and the moving ring 33 is It is arrange | positioned in the center of the brake shoe 12, and the tooth part 34 is formed in the inner peripheral surface, and is external to the two pinion gears 32a and 32b.

또한, 상기 무빙 링(33)의 하부 양측에는 연결대(35a),(35b)가 형성되어 브레이크 슈(12)에 힌지(36)로 결합된다.In addition, connecting rods 35a and 35b are formed at both lower sides of the moving ring 33 and are coupled to the brake shoe 12 by a hinge 36.

특히, 본 발명에서의 휠 실린더(11), 브레이크 슈(12), 링크(13)는 종전과 같이 베킹판에 지지되지 않고, 베킹판에 고정 지지되는 모터(31a),(31b)와 이 모터(31a),(31b)의 피니언 기어(32a),(32b)에 외접되는 무빙 링(33)에 의해 그 전체가 지지될 수 있게 된다.In particular, the wheel cylinder 11, the brake shoe 12, and the link 13 in the present invention are not supported on the backing plate as before, but are fixed to the backing plate and are supported by the motors 31a and 31b. The whole can be supported by the moving ring 33 which is external to the pinion gear 32a, 32b of 31a, 31b.

따라서, 이와 같이 구성된 본 발명에 따른 드럼식 브레이크 시스템의 작동상태를 살펴보면 다음과 같다.Therefore, looking at the operating state of the drum-type brake system according to the present invention configured as described above are as follows.

도 2와 3a 및 3b에 도시한 바와 같이, 차량의 주행 중에 운전자가 브레이크 페달(15)을 밟게 되면 브레이크 페달(15)의 후방에 연결된 가동단자(24)가 스프링(25)의 탄성을 누르고 후진하여 상하부 고정단자(23a),(23b)에 접속된다.2, 3A and 3B, when the driver presses the brake pedal 15 while the vehicle is running, the movable terminal 24 connected to the rear of the brake pedal 15 presses the elasticity of the spring 25 and moves backwards. The upper and lower fixed terminals 23a and 23b.

상기와 같이 상하부 고정단자(23a),(23b)에 가동단자(24)가 접속되면 상기 상하부 고정단자(23a),(23b)가 서로 통전되고, 이에 따라 릴레이(26)와 트랜지스터(27)를 통해 구동부의 모터(31a),(31b)에 전원이 공급된다.When the movable terminal 24 is connected to the upper and lower fixed terminals 23a and 23b as described above, the upper and lower fixed terminals 23a and 23b are energized with each other, thereby relaying the relay 26 and the transistor 27. Power is supplied to the motors 31a and 31b of the drive unit through the drive unit.

상기와 같이 모터(31a),(31b)에 전원이 공급되면 각각의 피니언 기어(32a),(32b)가 회전되면서 여기에 내접되어 있는 무빙 링(33)이 도 3b에 도시한 바와 같이 시계방향으로 회전되고, 상기 무빙 링(33)에 일체 지지되는 브레이크 슈(12), 휠 실린더(11), 링크(13)도 함께 회전된다.When power is supplied to the motors 31a and 31b as described above, the respective pinion gears 32a and 32b are rotated and the moving ring 33 inscribed therein is clockwise as shown in FIG. 3B. , The brake shoe 12, the wheel cylinder 11, and the link 13, which are integrally supported by the moving ring 33, are also rotated together.

이렇게 브레이크 슈(12)를 포함하는 전체가 회전되는 시점과 같이하여 휠 실린더(11)로 공급되는 유압에 의해 브레이크 슈(12)가 벌어지게 되고, 이에 따라 드럼(10)에 브레이크 슈(12)가 밀착되면서 제동이 이루어지게 된다.The brake shoe 12 is opened by the hydraulic pressure supplied to the wheel cylinder 11 at the same time as when the whole including the brake shoe 12 is rotated, and thus the brake shoe 12 is applied to the drum 10. Is in close contact with the brakes.

즉, 반시계방향으로 회전하는 드럼(10)에 대해 브레이크 슈(12)는 그 반대방향인 시계방향으로 회전하면서 드럼(10)과 밀착되므로, 더욱 강력한 제동력을 발휘할 수 있게 되는 것이다.That is, the brake shoe 12 is in close contact with the drum 10 while rotating in the counterclockwise direction with respect to the drum 10 that rotates in a counterclockwise direction, thereby enabling a more powerful braking force.

이상에서 살펴본 바와 같이 본 발명은 회전 마찰력을 이용한 드럼식 브레이크 시스템을 제공함으로써, 브레이크의 작동시 브레이크 슈가 드럼과 반대방향으로 역회전하면서 마찰될 수 있도록 하여 슬림현상을 방지하고, 드럼과 패드 간의 강제압착력을 증대시킬 수 있도록 하여 제동능력을 상승시킬 수 있도록 한 것이다.As described above, the present invention provides a drum-type brake system using a rotating frictional force, so that the brake shoe can be rubbed while rotating in the opposite direction to the drum when the brake is operated, thereby preventing a slim phenomenon, and a forced compression force between the drum and the pad. In order to increase the braking ability.

Claims (1)

드럼의 내측 상단에 배치되는 휠 실린더와, 상기 휠 실린더에 상단이 연결되고 하단은 링크에 연결되면서 드럼의 내주 양편으로 배치되는 브레이크 슈를 포함하는 드럼식 브레이크 시스템에 있어서,In a drum-type brake system including a wheel cylinder disposed on the inner upper end of the drum, and a brake shoe which is connected to the upper end of the wheel cylinder and the lower end is connected to the link and disposed on both inner circumferences of the drum, 브레이크 페달의 조작에 따라 전원을 공급받아 작동되는 상하 2개의 모터와, 상기 모터의 축에 장착되는 각각의 피니언 기어와, 상기 브레이크 슈의 내측에 배치되면서 연결대를 통해 양편의 브레이크 슈와 일체 결합되고 내주면의 치형부를 통해 상기 피니언 기어에 외접되면서 전동가능하여 상기 휠 실린더 및 브레이크 슈 전체를 회전시켜줄 수 있게 되는 무빙 링을 포함하여 구성되는 것을 특징으로 하는 회전 마찰력을 이용한 드럼식 브레이크 시스템.Two upper and lower motors that are powered by the operation of the brake pedal, the respective pinion gears mounted on the shaft of the motor, and the brake shoes disposed on the inner side of the brake shoe and integrally coupled to both brake shoes through a connecting rod. And a moving ring which is rotatable to the pinion gear through the teeth of the inner circumferential surface and is capable of rotating the entire wheel cylinder and the brake shoe.
KR1019970071481A 1997-12-20 1997-12-20 Drum brake system by rotational friction KR100309825B1 (en)

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KR1019970071481A KR100309825B1 (en) 1997-12-20 1997-12-20 Drum brake system by rotational friction

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR950031718A (en) * 1994-05-16 1995-12-20 전성원 Anti-collision brake system for automobile

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR950031718A (en) * 1994-05-16 1995-12-20 전성원 Anti-collision brake system for automobile

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