KR20080043025A - Drag preventing structure in brake system - Google Patents

Drag preventing structure in brake system Download PDF

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Publication number
KR20080043025A
KR20080043025A KR1020060111522A KR20060111522A KR20080043025A KR 20080043025 A KR20080043025 A KR 20080043025A KR 1020060111522 A KR1020060111522 A KR 1020060111522A KR 20060111522 A KR20060111522 A KR 20060111522A KR 20080043025 A KR20080043025 A KR 20080043025A
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South Korea
Prior art keywords
brake
drag
pads
preventing member
drag preventing
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KR1020060111522A
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Korean (ko)
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목진상
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현대자동차주식회사
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Priority to KR1020060111522A priority Critical patent/KR20080043025A/en
Publication of KR20080043025A publication Critical patent/KR20080043025A/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
    • 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
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
    • F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
    • F16D65/095—Pivots or supporting members therefor
    • 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
    • F16D2055/0004—Parts or details of disc brakes
    • F16D2055/0041—Resilient elements interposed directly between the actuating member and the brake support, e.g. anti-rattle springs
    • 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
    • F16D2127/02—Release mechanisms

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

Abstract

A drag preventing structure in a brake system is provided to connect two pads contacting with a brake pad by using a drag preventing member made of shape memory alloy. A drag preventing structure in a brake system comprises a drag preventing member(6) and two pads(3). The pads are made of shape memory alloy and connected with each other by the drag preventing member. The pads are installed close to two sides of a brake disk(1), which rotates along with a wheel, in order to generate brake force. The drag preventing member shapes into a square plate whose two ends are bent. Both end of the drag preventing member is inserted into the pads to connect the pad with each other. When the drag preventing member is heated, the drag preventing member gets longer.

Description

브레이크 시스템의 드래그 방지구조{Drag preventing structure in brake system}Drag preventing structure in brake system

도 1은 종래 기술에 따른 디스크식 브레이크 시스템의 요부 상세도,1 is a detailed view of the main part of a disc brake system according to the prior art;

도 2는 본 발명에 따른 드래그 방지부재가 장착된 디스크식 브레이크 시스템의 요부 상세도,Figure 2 is a detailed view of the main portion of the disc brake system equipped with a drag preventing member according to the present invention;

도 3은 본 발명에 따른 드래그 방지부재의 온도변화에 따른 변형 상태도이다.3 is a modified state diagram according to the temperature change of the drag preventing member according to the present invention.

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

1-브레이크 디스크 2-캘리퍼1-Brake Disc 2-Caliper

3-브레이크 패드 4-피스톤3-Brake Pads 4-Piston

5-피스톤씰 6-드래그 방지부재5-piston seal 6-drag prevention member

본 발명은 차량의 브레이크 시스템에 관한 것으로, 특히 브레이크 디스크의 양측에 배치된 2개의 브레이크 패드를 형상기억합금으로 제작된 드래그 방지부재로 연결한 브레이크 시스템의 드래그 방지구조에 관한 것이다.The present invention relates to a brake system of a vehicle, and more particularly, to a drag prevention structure of a brake system in which two brake pads disposed on both sides of a brake disc are connected to a drag prevention member made of a shape memory alloy.

일반적으로 차량의 브레이크 시스템은 차량을 감속 또는 정지시킴과 더불어 주차상태를 유지하기 위해 사용되는 중요한 장치로서, 일반적으로 마찰력을 이용하 여 차량의 운동에너지를 열에너지로 바꾸어, 그것을 대기중으로 방출시켜 브레이크작용을 하는 마찰식 브레이크를 사용하고 있고, 브레이크장치의 조작기구는 로드나 와이어를 사용하는 기계식과 유압을 이용하는 유압식이 있다.In general, a brake system of a vehicle is an important device used to maintain a parking state while decelerating or stopping a vehicle. Generally, a frictional force is used to convert a vehicle's kinetic energy into thermal energy and release it into the atmosphere to apply a brake action. The friction type brake is used, and the brake mechanism includes a mechanical type using a rod or a wire and a hydraulic type using a hydraulic pressure.

상기 유압식 브레이크에 있어서 마스터 실린더에서 오는 유압을 받아서 제동력을 발생하는 브레이크 본체는 구조상으로 드럼식 브레이크와 디스크식 브레이크로 나누어지는 바, 상기 디스크식 브레이크는 바퀴와 함께 회전하는 브레이크 디스크의 양쪽에서 브레이크 패드를 유압을 이용하여 눌러서 제동하도록 되어 있다.In the hydraulic brake, a brake main body that generates a braking force by receiving hydraulic pressure from the master cylinder is structurally divided into a drum brake and a disc brake. The disc brake includes brake pads on both sides of the brake disc rotating together with the wheels. It uses hydraulic pressure to press and brake.

도 1에는 종래 기술에 따른 디스크식 브레이크 시스템의 요부가 도시되어 있는 바, 즉 차륜과 함께 일체로 회전하도록 장착되는 브레이크 디스크(1)의 일부를 감싸도록 캘리퍼(2)가 차체에 고정되게 설치되고, 상기 캘리퍼의 내부에는 브레이크 디스크 쪽을 향해 2개의 패드(3)가 배치되며, 상기 한쪽 브레이크 패드(3)에는 마스터 실린더로부터 유압을 공급받아 전진 및 후진하는 피스톤(4)이 연결되어 있으며, 브레이크의 해제시에 상기 피스톤(4)을 리턴시켜 상기 브레이크 패드(3)가 브레이크 디스크(1)로부터 이격되게 하는 피스톤씰(5)이 상기 패드(3)와 피스톤(4)사이에 개재되어 있다.1 shows the main part of the disc brake system according to the prior art, that is, the caliper 2 is fixedly installed on the vehicle body so as to surround a part of the brake disc 1 mounted to rotate integrally with the wheel. In the caliper, two pads 3 are disposed toward the brake disc, and one brake pad 3 is connected to a piston 4 that receives hydraulic pressure from the master cylinder and moves forward and backward. A piston seal 5 is interposed between the pad 3 and the piston 4 to return the piston 4 upon release of the brake pad 3 so that the brake pad 3 is spaced apart from the brake disc 1.

이에 따라 운전자가 브레이크 페달을 조작하면 마스터실린더에서 유압을 발생시켜 상기 피스톤에 공급하고, 상기 피스톤은 전진해서 상기 피스톤씰을 변형시키면서 일측 브레이크 패드를 타측 패드 쪽으로 가압하여 브레이크 디스크의 양측면과 패드들이 밀착되게 해서 마찰 제동력을 발생시키게 되며, 브레이크 페달을 해방시키면 상기 피스톤에 공급된 유압이 소멸되면서 상기 피스톤은 피스톤씰의 탄성 복원력에 의해 원래의 위치로 복귀되어 브레이크 패드들이 디스크로부터 이격되면서 마찰 제동력도 소멸되게 된다.Accordingly, when the driver operates the brake pedal, hydraulic pressure is generated from the master cylinder and supplied to the piston, and the piston moves forward to deform the piston seal while pressing one brake pad toward the other pad so that both sides of the brake disc and the pads closely adhere to each other. When the brake pedal is released, the hydraulic pressure supplied to the piston disappears, and the piston is returned to its original position by the elastic restoring force of the piston seal. Will be.

그런데 상기와 같은 피스톤씰을 이용한 종래의 피스톤의 리턴구조에서 피스톤씰의 리턴 복원력이 충분하지 않아서 패드가 디스크로부터 완전히 이격되지 못하는 드래그 현상이 발생하게 되는 데, 만일 제동을 반복하게 되면 디스크와 패드가 가열되면서 열팽창을 하여 디스크와 패드사이의 간격이 더욱더 좁아지거나 없어지게 되면서 드래그 현상이 증대되게 되는 문제점이 있었다.However, in the conventional piston return structure using the piston seal as described above, the return recovery force of the piston seal is not sufficient, so that a drag phenomenon occurs in which the pad is not completely separated from the disc. There is a problem that the drag phenomenon is increased as the gap between the disk and the pad is further narrowed or disappeared due to thermal expansion while being heated.

이에 본 발명은 상기한 사정을 감안하여 안출된 것으로, 피스톤씰의 부족한 피스톤 복귀력을 보완해서 브레이크 해제시에 패드가 디스크로부터 충분한 갭을 가지고서 이격되게 하여 브레이크 시스템의 드래그 현상을 효과적으로 저감시킬 수 있도록 한 브레이크 시스템의 드래그 방지구조를 제공함에 그 목적이 있다.Accordingly, the present invention has been made in view of the above-described circumstances, and supplements the insufficient piston return force of the piston seal so that the pad is spaced apart from the disc with a sufficient gap when the brake is released so that the drag phenomenon of the brake system can be effectively reduced. It is an object to provide a drag preventing structure of a brake system.

상기와 같은 목적을 달성하기 위한 본 발명은, 차륜과 일체로 회전하도록 장착된 브레이크 디스크의 양측면과 인접하게 배치되어 상기 브레이크 디스크와 밀착되어서 마찰 제동력을 발생시키는 2개의 패드가 형상기억합금으로 제작된 드래그 방지부재에 의해 서로 연결된 구조로 되어 있다.In order to achieve the above object, the present invention provides two pads, which are disposed adjacent to both side surfaces of a brake disc mounted to rotate integrally with a wheel, are in close contact with the brake disc to generate a friction braking force. It is a structure connected to each other by the drag prevention member.

바람직하기로는 상기 드래그 방지부재는 직사각 평판 형상으로 형성됨과 더불어 그 양단부는 절곡되어 상기 양측 패드에 심어지는 형태로 설치된 것을 특징으로 한다.Preferably, the drag preventing member is formed in a rectangular flat plate shape, and both ends thereof are bent and installed in the pads on both sides thereof.

또한 상기 드래그 방지부재는 가열되면 그 전체 길이가 길어지는 구조로 된 것을 특징으로 한다.In addition, the drag preventing member is characterized in that the entire length of the structure is long when heated.

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

도 2에는 본 발명에 따라 드래그 방지부재가 장착된 상태의 정면도가 도시되어 있는 바, 즉 차륜과 함께 일체로 회전하도록 장착되는 브레이크 디스크(1)의 일부를 감싸도록 캘리퍼(2)가 차체에 고정되게 설치되고, 상기 캘리퍼의 내부에는 브레이크 디스크(1)의 양측면을 향해 2개의 패드(3)가 배치되며, 상기 한쪽 브레이크 패드(3)에는 마스터 실린더로부터 유압을 공급받아 전진 및 후진하는 피스톤(4)이 연결되어 있으며, 브레이크의 해제시에 상기 피스톤(4)을 리턴시켜 상기 브레이크 패드(3)가 브레이크 디스크(1)로부터 이격되게 하는 피스톤씰(5)이 상기 패드(3)와 피스톤(4)사이에 개재되어 있다.2 shows a front view of a state where the drag preventing member is mounted according to the present invention, that is, the caliper 2 is fixed to the vehicle body so as to surround a part of the brake disc 1 mounted to rotate integrally with the wheel. It is installed so that the two pads (3) are arranged in the caliper toward both sides of the brake disc (1), the one brake pad (3) to receive the hydraulic pressure from the master cylinder to move forward and backward (4) Is connected, the piston seal (5) which returns the piston (4) when the brake is released so that the brake pad (3) is separated from the brake disc (1) is the pad (3) and the piston (4) It is interposed between).

그리고 상기 2개의 패드(3)를 브레이크 디스크(1)를 가로지르는 방향으로 일체로 연결하는 드래그 방지부재(6)가 구비되어 있는 데, 상기 드래그 방지부재(6)는 형상기억합금으로 제작됨과 더불어 직사각 플레이트 형상을 하고서 그 양단부가 절곡되어 좌우측 브레이크 패드(3)에 각각 심어지는 형태로 연결되어 있다.In addition, a drag preventing member 6 is integrally connected to the two pads 3 in a direction crossing the brake disc 1, and the drag preventing member 6 is made of a shape memory alloy. It has a rectangular plate shape and both ends thereof are bent and connected to the left and right brake pads 3, respectively.

상기 드래그 방지부재(6)는 도 3에서 점선으로 도시한 바와 같이 온도가 낮을 때에는 원호형상으로 굽혀져 있다가 열을 받아서 가열되면 실선으로 도시한 바와 같이 직선형상으로 펴지는 구조를 하고 있다.As shown by the dotted line in FIG. 3, the drag preventing member 6 is bent in an arc shape when the temperature is low, and then stretched in a straight line as shown by a solid line when heated by heating.

즉, 상기 드래그 방지부재(6)는 온도가 낮은 냉간시에는 그 양단사이의 거리가 좁아지는 반면에 가열되는 열간시에는 그 양단사이의 거리가 멀어지는 구조를 하고 있다.That is, the drag preventing member 6 has a structure in which the distance between both ends thereof becomes narrow when cold temperature is low, while the distance between both ends thereof becomes far when hot temperature is heated.

따라서 브레이크의 빈번한 사용으로 브레이크 디스크와 패드가 열을 받아서 가열되어 팽창하면서 브레이크 디스크와 패드 사이의 간격이 좁아질 경우에 상기 드래그 방지부재(6)의 길이가 길어지면서 양측 패드(3)를 서로 멀어지는 방향으로 밀어줌으로써, 브레이크 패드가 브레이크 디스크로부터 이격되게 하여 브레이크 드래그 현상을 효과적으로 저감시키게 되는 것이다.Therefore, when the brake disc and the pad are heated and expanded due to frequent use of the brake, the distance between the brake disc and the pad is narrowed, and the length of the drag preventing member 6 is increased so that the two side pads 3 are separated from each other. By pushing in the direction, the brake pads are spaced apart from the brake disk to effectively reduce the brake drag phenomenon.

이상 설명한 바와 같이 본 발명에 따른 브레이크 시스템의 드래그 저감구조에 의해 열을 받아서 가열되면 길이가 길어지는 드래그 방지부재로 양측 패드를 연결하여, 브레이크의 빈번한 사용으로 브레이크 패드와 브레이크 디스크 사이의 갭이 좁아지거나 소멸될 때에 상기 드래그 방지부재가 양측 패드 사이의 간격을 넓혀주는 방향으로 양측 패드를 밀어줌으로써, 브레이크 패드가 브레이크 디스크로부터 완전히 이격되지 못하여 발생하는 브레이크 드래그 현상을 효과적으로 방지해서 브레이크 시스템의 내구성을 향상시키고, 소음을 방지하게 되는 등의 효과가 있다.As described above, the pads of the brake system according to the present invention are connected to both side pads by a drag preventing member which is lengthened when heated by heating, and the gap between the brake pad and the brake disc is narrowed due to frequent use of the brakes. As the drag preventing member pushes both pads in a direction that widens the gap between the pads when they are lost or dissipated, the brake pads are prevented from being completely separated from the brake discs, thereby effectively improving the durability of the brake system. To prevent noise, and the like.

Claims (3)

차륜과 일체로 회전하도록 장착된 브레이크 디스크의 양측면과 인접하게 배치되어 상기 브레이크 디스크와 밀착되어서 마찰 제동력을 발생시키는 2개의 패드가 형상기억합금으로 제작된 드래그 방지부재에 의해 서로 연결된 브레이크 시스템의 드래그 방지구조.Drag prevention of the brake system, which is arranged adjacent to both sides of the brake disc mounted to rotate integrally with the wheel and connected to each other by a drag prevention member made of a shape memory alloy, in which two pads are in close contact with the brake disc to generate friction braking force. rescue. 제 1항에 있어서, 상기 드래그 방지부재는 직사각 평판 형상으로 형성됨과 더불어 그 양단부는 절곡되어 상기 양측 패드에 심어지는 형태로 설치된 것을 특징으로 하는 브레이크 시스템의 드래그 저감구조.The drag reduction structure of claim 1, wherein the drag preventing member is formed in a rectangular flat plate shape and both ends thereof are bent to be installed in both pads. 제 2항에 있어서, 상기 드래그 방지부재는 가열되면 그 전체 길이가 길어지는 구조로 된 것을 특징으로 하는 브레이크 시스템의 드래그 방지구조.3. The drag preventing structure of claim 2, wherein the drag preventing member has a structure in which the total length thereof becomes long when heated.
KR1020060111522A 2006-11-13 2006-11-13 Drag preventing structure in brake system KR20080043025A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3433507B1 (en) * 2016-03-21 2020-07-15 Faiveley Transport Amiens Railroad brake system for railroad vehicle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3433507B1 (en) * 2016-03-21 2020-07-15 Faiveley Transport Amiens Railroad brake system for railroad vehicle
AU2017236326B2 (en) * 2016-03-21 2021-11-25 Faiveley Transport Amiens Rail vehicle braking system for a rail vehicle

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