KR20090008931A - Disk brake for vehicle - Google Patents

Disk brake for vehicle Download PDF

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Publication number
KR20090008931A
KR20090008931A KR1020070072295A KR20070072295A KR20090008931A KR 20090008931 A KR20090008931 A KR 20090008931A KR 1020070072295 A KR1020070072295 A KR 1020070072295A KR 20070072295 A KR20070072295 A KR 20070072295A KR 20090008931 A KR20090008931 A KR 20090008931A
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KR
South Korea
Prior art keywords
disk
brake
wedge member
drive motor
wedge
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Application number
KR1020070072295A
Other languages
Korean (ko)
Inventor
김종기
Original Assignee
주식회사 만도
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Application filed by 주식회사 만도 filed Critical 주식회사 만도
Priority to KR1020070072295A priority Critical patent/KR20090008931A/en
Publication of KR20090008931A publication Critical patent/KR20090008931A/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
    • 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
    • F16D55/2265—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 the axial movement being guided by one or more pins engaging bores in the brake support or the brake housing
    • F16D55/227—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 the axial movement being guided by one or more pins engaging bores in the brake support or the brake housing by two or more pins
    • 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
    • F16D65/097—Resilient means interposed between pads and supporting members or other brake parts
    • F16D65/0972—Resilient means interposed between pads and supporting members or other brake parts transmitting brake reaction force, e.g. elements interposed between torque support plate and pad
    • 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
    • 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
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/20—Mechanical mechanisms converting rotation to linear movement or vice versa
    • F16D2125/34—Mechanical mechanisms converting rotation to linear movement or vice versa acting in the direction of the axis of rotation
    • F16D2125/40—Screw-and-nut
    • 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
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/58—Mechanical mechanisms transmitting linear movement
    • F16D2125/66—Wedges

Abstract

A disk brake for the vehicles is provided to improve the brake answerability by retreating the wedge element through the brake release member. A disk brake for the vehicles comprises the disc(10) rotating with the wheel of the vehicles; driving friction pads(20a,20b) which generate the braking power while rubbing of disc; the wedge element(60) going ahead towards disc; the guide member which it guides so that the wedge element go ahead towards disc; power transmission element for converting the rotational motion by the axis of rotation of the drive motor into the linear motion of the wedge element between the wedge element and drive motor; and the brake release member(70) in which the braking power. The brake release member is made of the elastic member.

Description

차량용 디스크 브레이크{DISK BRAKE FOR VEHICLE}Car Disc Brake {DISK BRAKE FOR VEHICLE}

도 1은 본 발명에 따른 차량용 디스크 브레이크의 분해 사시도이다.1 is an exploded perspective view of a disc brake for a vehicle according to the present invention.

도 2는 본 발명에 따른 차량용 디스크 브레이크의 제동 해제 상태를 보인 개략도이다. 2 is a schematic view showing a braking release state of a vehicular disk brake according to the present invention.

도 3은 본 발명에 따른 차량용 디스크 브레이크의 제동 상태를 보인 개략도이다. 3 is a schematic view showing a braking state of a disc brake for a vehicle according to the present invention.

* 도면의 주요 부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

10: 디스크 20a, 20b: 마찰패드10: disc 20a, 20b: friction pad

30: 캘리퍼하우징 31: 가이드로드30: Caliper Housing 31: Guide Rod

32: 핑거부 40: 캐리어32: finger portion 40: carrier

41: 가이드홀 50: 구동모터 41: guide hole 50: drive motor

51: 회전축 60: 쐐기부재51: rotation shaft 60: wedge member

70: 제동해제부재 80: 너트부재70: braking releasing member 80: nut member

본 발명은 차량용 브레이크에 관한 것으로, 더욱 상세하게는 구동모터에 의해 디스크의 회전방향측으로 이동하며 마찰패드를 디스크에 압박하는 쐐기부재와 제동 해 제를 위하여 쐐기부재가 후퇴되도록 하는 제동해제부재를 갖춘 차량용 디스크 브레이크에 관한 것이다. The present invention relates to a vehicle brake, and more particularly, has a wedge member which is moved by the drive motor in the rotational direction of the disc and presses the friction pad against the disc, and a brake release member which causes the wedge member to retreat for the brake release. It relates to a disc brake for a vehicle.

일반적으로 차량용 디스크 브레이크는 휠과 함께 회전하는 원판형상의 디스크 일부를 양측에서 마찰패드로 압박하여 제동력을 얻는 장치로써, 이러한 차량용 디스크 브레이크 중에는 디스크의 일측면과 마찰하며 제동력을 발생시키는 마찰패드와, 일면에 마찰패드가 부착되며 힘을 발생시키는 구동모터에 의해 디스크의 회전방향으로 이동하며 디스크측으로 전진하는 쐐기부재와, 쐐기부재가 디스크측으로 이동할 경우에 쐐기부재가 디스크의 회전방향측으로 안내하는 안내부재를 포함하여, 쐐기부재가 마찰패드와 디스크 사이에서 발생하는 마찰력에 의해 디스크와 안내부재 사이에 물리도록 함으로써 적은 힘으로도 큰 제동력을 얻을 수 있도록 한 차량용 디스크 브레이크가 있다. In general, a vehicle disc brake is a device that obtains a braking force by pressing a portion of a disk-shaped disk that rotates with the wheel with friction pads on both sides, and during such a vehicle disc brake, a friction pad that rubs against one side of the disc and generates a braking force; A friction pad is attached to one surface and is driven by the drive motor for generating a force, the wedge member moving in the disk direction and advancing to the disk side, and the guide member for guiding the wedge member toward the disk rotation direction when the wedge member moves to the disk side. Including a, there is a vehicle disk brake that the wedge member is pinched between the disk and the guide member by the friction force generated between the friction pad and the disk to obtain a large braking force with a small force.

이때, 쐐기부재의 후면과 안내부재의 전면은 쐐기부재가 디스크측으로 전진하며 디스크의 회전방향측으로 진행하며 안내부재와 디스크 사이에 물릴 수 있도록 하기 위하여 디스크의 회전방향으로 진행하며 디스크측으로 경사지게 형성되어 있다. At this time, the back of the wedge member and the front of the guide member are formed to be inclined toward the disk and proceed in the rotation direction of the disk so that the wedge member advances to the disk side and proceeds to the rotation direction side of the disk and can be bitten between the guide member and the disk. .

또한, 이러한 종래의 차량용 디스크 브레이크에 적용된 쐐기부재와 안내부재는 차량의 반대측 휠에 적용되거나 차량이 후진하여 디스크가 역방향으로 회전할 경우에도 제동력을 발생시킬 수 있도록 양측이 대칭되는 구조를 갖도록 형성된다. 즉, 쐐기부재의 후면 일측과 안내부재의 전면 일측은 디스크의 회전방향측으로 진행하며 디스크측으로 경사지게 형성되며, 쐐기부재의 후면 타측과 안내부재의 전면 타측은 디스크의 회전방향 반대방향측으로 진행하며 디스크측으로 경사지게 형성되어 있는 것이다.In addition, the wedge member and the guide member applied to the conventional disc brake for a vehicle are formed to have a structure in which both sides are symmetrical so as to generate a braking force even when the disc is rotated in the reverse direction by being applied to the wheel on the opposite side of the vehicle. . That is, one side of the rear side of the wedge member and one side of the front side of the guide member are formed to be inclined toward the disk side while the disk is rotated in the rotational direction. It is formed to be inclined.

이러한 쐐기부재는 제동시에는 안내부재를 따라 전진하며 강한 제동력이 발휘되나 제동의 해제가 원활하지 못한 문제점이 있었다.The wedge member is advanced along the guide member during braking and exhibits a strong braking force, but there is a problem in that the braking is not smoothly released.

본 발명은 상술한 종래기술의 문제점을 해결하기 위한 것으로, 본 발명의 목적은 쐐기부재와 안내부재의 상호작용에 의해 제동동작이 이루어진 후 원하는 시점에서 자유롭게 제동력을 해제할 수 있는 디스크 브레이크를 제공하는 것이다. The present invention is to solve the above problems of the prior art, an object of the present invention is to provide a disc brake that can be released freely at a desired time after the braking operation by the interaction of the wedge member and the guide member will be.

이와 같은 목적을 달성하기 위한 본 발명에 따른 차량용 디스크 브레이크는 차량의 휠과 함께 회전하는 디스크와, 상기 디스크의 일측면과 마찰하며 제동력을 발생시키는 가동 마찰패드와, 그 일면에 상기 가동 마찰패드가 부착되며 동력을 발생시키는 구동모터에 의해 상기 디스크의 회전방향으로 이동하며 상기 디스크측으로 전진하는 쐐기부재와, 상기 쐐기부재가 상기 디스크측으로 전진하도록 안내하는 안내부재를 포함한 디스크 브레이크에 있어서, The disk brake for a vehicle according to the present invention for achieving the above object is a disk that rotates with the wheel of the vehicle, a movable friction pad that generates a braking force and friction with one side of the disk, the movable friction pad on one side In the disk brake including a wedge member attached to the disk drive moving in the rotational direction of the disk by the drive motor for generating power, and a guide member for guiding the wedge member to advance to the disk side,

상기 쐐기부재와 상기 구동모터사이에는 상기 구동모터의 회전축에 의한 회전운동을 상기 쐐기부재를 진퇴시키기 위한 직선운동으로 변환하기 위한 동력전달 부재와, 상기 동력전달부재와 상기 쐐기부재사이에 개재되어 상기 동력전달부재의 후퇴시 상기 쐐기부재가 후퇴되어 제동력이 해제되도록 하는 제동해제부재가 설치되는 것을 특징으로 한다.Between the wedge member and the drive motor is a power transmission member for converting the rotational movement by the rotational axis of the drive motor into a linear motion for advancing the wedge member, interposed between the power transmission member and the wedge member and the When the power transmission member is retracted, the wedge member is retracted, characterized in that the brake release member is installed to release the braking force.

상기 제동해제부재는 탄성부재로 형성되는 것을 특징으로 한다.The braking releasing member may be formed of an elastic member.

상기 동력전달부재는 상기 구동모터의 회전축에 형성된 스크류부의 외주연에 결합되어 상기 스크류부의 회전운동에 따라 축방향으로 직선운동하는 너트부를 포함하는 것을 특징으로 한다.The power transmission member is coupled to the outer periphery of the screw portion formed on the rotating shaft of the drive motor, characterized in that it comprises a nut portion linearly moving in the axial direction according to the rotational movement of the screw portion.

이하에서는 본 발명의 바람직한 하나의 실시예를 도면을 참조하여 상세히 설명한다. Hereinafter, one preferred embodiment of the present invention will be described in detail with reference to the drawings.

본 발명에 따른 차량용 디스크 브레이크는 도 1, 2에 도시되어 있는 바와 같이 차량의 휠(미도시)과 함께 회전하는 원판형상의 디스크(10) 양측면에 마찰패드(20a, 20b)를 각각 마찰시켜 제동력을 얻는 장치로써, 내부 양측에 한 쌍의 마찰패드(20a, 20b)가 서로 대향되게 배치되어 있는 캘리퍼하우징(30)과, 차량의 너클부(미도시)에 고정되어 캘리퍼하우징(30)이 너클부에 진퇴이동 가능하게 설치될 수 있게 하는 캐리어(40)를 포함한다. In the disc brake for a vehicle according to the present invention, as shown in Figs. 1 and 2, the braking force is generated by rubbing the friction pads 20a and 20b on both sides of the disc-shaped disc 10 that rotates together with the wheels (not shown) of the vehicle. As a device for obtaining a caliper housing, a pair of friction pads 20a and 20b are disposed opposite to each other, and the caliper housing 30 is fixed to a knuckle portion (not shown) of the vehicle. It includes a carrier 40 that can be installed to move forward and backward.

캘리퍼하우징(30)이 캐리어(40)에 진퇴이동 가능하게 설치될 수 있도록 하기 위하여 캘리퍼하우징(30)의 양측단에는 캐리어(40)에 진퇴이동 가능하게 설치되는 한 쌍의 가이드로드(31)가 스크류 등의 체결부재를 통해 고정되어 있으며, 캐리어(40)의 양측에는 가이드로드(31)가 진퇴이동가능하게 설치되는 가이드홀(41)이 각각 마련되어 있다. In order to allow the caliper housing 30 to be installed in the carrier 40 so that the carrier 40 can be moved forward and backward, a pair of guide rods 31 are installed in the carrier 40 so that the caliper housing 30 can be moved forward and backward. It is fixed through a fastening member such as a screw, and the guide hole 41 is provided on both sides of the carrier 40 so that the guide rod 31 can be moved forward and backward.

캘리퍼하우징(30)의 내부 일측에는 디스크(10)측을 향하고 있는 전면에 마찰패드(20a)가 설치되며 그 후면이 디스크(10)에 대하여 소정각도로 경사지게 형성되어 있는 쐐기부재(60)와, 쐐기부재(60)를 이동시키는 구동모터(50)와, 전면이 쐐기부재(60)의 후면과 대응하도록 경사지게 형성되어 쐐기부재(60)가 디스크(10)의 회전 방향측으로 이동하도록 안내하는 안내부재(31, 90)가 배치되며, 캘리퍼하우징(30)의 내부 타측에는 다른 하나의 마찰패드(20b)가 설치되는 핑거부(32)가 구비되어 있다. 본 실시예에서는 편의상 두 마찰패드(20a, 20b) 중 쐐기부재(60)에 설치되어 쐐기부재(60)와 함께 이동하는 마찰패드(20a)를 가동 마찰패드(20a)라 하며, 핑거부(32)에 설치되어 있는 마찰패드(20b)를 고정 마찰패드(20b)라 한다. At one inner side of the caliper housing 30, a friction pad 20a is installed on the front surface facing the disk 10 side, and a wedge member 60 whose rear surface is inclined at a predetermined angle with respect to the disk 10; The drive motor 50 for moving the wedge member 60, and the front member is formed to be inclined so as to correspond to the rear surface of the wedge member 60, the guide member for guiding the wedge member 60 to move toward the rotation direction of the disk 10 31 and 90 are disposed, and the other side of the caliper housing 30 is provided with a finger part 32 on which the other friction pad 20b is installed. In this embodiment, the friction pad 20a, which is installed on the wedge member 60 among the two friction pads 20a and 20b and moves together with the wedge member 60, is referred to as a movable friction pad 20a. The friction pad 20b provided in the) is called a fixed friction pad 20b.

또한, 구동모터(50)와 안내부재(70, 80) 사이에는 구동모터(50)에서 발생한 회전력에 의해 진퇴이동하며 쐐기부재(60)가 디스크(10)측으로 전진하게 하는 너트부재(80)가 구비되어 있다. 이와 같이 너트부재(80)가 구동모터(50)에 의해 진퇴이동할 수 있도록 하기 위해 구동모터(50)의 회전축(51)은 그 외주면에 수나사가 가공되어 있으며, 너트부재(80)의 후면에는 회전축(51)이 스크류 결합될 수 있도록 그 내주면에 암나사가 가공되어 있는 너트부가 마련된다.In addition, between the drive motor 50 and the guide member (70, 80) moves forward and backward by the rotational force generated from the drive motor 50, the nut member 80 for the wedge member 60 to advance to the disk 10 side is It is provided. In order to allow the nut member 80 to move forward and backward by the drive motor 50, the rotation shaft 51 of the drive motor 50 has a male screw on its outer circumferential surface, and a rotation shaft on the rear surface of the nut member 80. A nut part is provided on the inner circumferential surface thereof so that the 51 can be screwed together.

따라서, 회전축(51)의 회전방향에 따라 너트부재(80)가 디스크(10)측으로 진퇴이동하며 쐐기부재(60)를 디스크(10)측으로 전진시킬 수 있게 되는 것이다. Therefore, the nut member 80 moves forward and backward along the rotational direction of the rotation shaft 51 to move the wedge member 60 toward the disk 10.

또한, 너트부재(80)와 쐐기부재(60) 사이에는 제동력을 해제할 수 있도록 하는 제동해제부재(70)가 설치된다.In addition, a braking releasing member 70 is provided between the nut member 80 and the wedge member 60 to release the braking force.

제동해제부재(70)는 너트부재(80)와 쐐기부재(60)사이에 개재되어 구동모터(50)의 회전축(51)을 역전시켜 너트부재(80)가 구동모터(50)쪽으로 후퇴하는 동작에 따라 쐐기부재(60)도 같이 후퇴하도록 하여 제동력을 원하는 시점에서 바로 해제할 수 있도록 한다.The braking releasing member 70 is interposed between the nut member 80 and the wedge member 60 to reverse the rotation shaft 51 of the driving motor 50 so that the nut member 80 retreats toward the driving motor 50. In accordance with the wedge member 60 is also to be retracted so that the braking force can be released immediately at the desired time.

따라서, 제동해제부재(70)는 쐐기부재(60)의 제동동작을 보장함과 동시에 제동해제 동작도 수행해야 하므로, 쐐기부재(60)의 변위만큼 탄성변형될 수 있는 재질로 구성되어 쐐기부재(60)와 너트부재(80)사이에 접착 등의 방법으로 결합되거나, 쐐기부재(60)와 너트부재(80)사이에서 레일과 같은 구조에 의해 슬라이딩 운동 가능하고 회전축(51)의 축방향 변위에도 쐐기부재(60)가 너트부재(80)와 연동되도록 구성할 수 있다. Therefore, the braking releasing member 70 must ensure a braking operation of the wedge member 60 and also perform a braking releasing operation, so that the braking releasing member 70 is made of a material that can elastically deform as much as the displacement of the wedge member 60. 60) and the coupling between the nut member 80 or the like, or by the structure such as a rail between the wedge member 60 and the nut member 80, the sliding movement is possible and the axial displacement of the rotary shaft 51 The wedge member 60 may be configured to interlock with the nut member 80.

다음은 이와 같이 구성된 본 발명에 따른 차량용 디스크 브레이크의 동작을 상세히 설명한다. The following describes in detail the operation of the vehicular disk brake according to the present invention configured as described above.

차량이 전진하는 동안 제동을 위해 구동모터(50)에 전원을 인가하면 구동모터(50)에 의해 너트부재(90)가 디스크(10)측으로 전진하면서 쐐기부재(60)와 가동 마찰패드(20a)를 디스크(10)측으로 압박하여 가동 마찰패드(20a)와 디스크(10)가 마찰하게 된다. 이와 같이 가동 마찰패드(20a)와 디스크(10)가 마찰하면 그 사이에서 작용하는 마찰력에 의해 가동 마찰패드(20a)와 가동 마찰패드(20a)가 설치된 쐐기부재(60)는 디스크(10)의 회전방향측으로 힘을 받아 디스크(10)의 회전방향측으로 이동한다. When power is applied to the drive motor 50 for braking while the vehicle is moving forward, the wedge member 60 and the movable friction pad 20a are moved by the drive motor 50 to the nut member 90 toward the disk 10. Is pressed toward the disk 10 so that the movable friction pad 20a and the disk 10 are rubbed. As described above, when the friction pad 20a and the disk 10 are rubbed, the wedge member 60 provided with the movable friction pad 20a and the movable friction pad 20a is provided with a frictional force acting therebetween. It is moved to the rotation direction side of the disk 10 by the force in the rotation direction side.

반대로 제동력 해제를 위하여는 구동모터(50)가 역전되도록 하여 너트부재(80)가 후퇴되도록 하고 이에 따라 제동해제부재(70)가 쐐기부재(60)도 후퇴되도록 함으로써 제동력이 신속하게 해제될 수 있도록 한다.On the contrary, in order to release the braking force, the driving motor 50 is reversed so that the nut member 80 is retracted and thus the braking release member 70 is also retracted so that the braking force can be released quickly. do.

도시된 실시예는 하나의 구동모터(50)를 사용하여 정역회전동작에 의해 제동 및 그 해제가 이루어지도록 되어 있으나, 제동동작의 응답성을 향상시키기 위하여 두 개의 구동모터를 통해 제동동작과 제동해제동작이 별로로 이루어지도록 할 수 있다.In the illustrated embodiment, braking and releasing are performed by the forward and reverse rotation using one driving motor 50, but the braking operation and the braking release through the two driving motors in order to improve the responsiveness of the braking operation. The operation can be done separately.

이상에서 상세히 설명한 바와 같이, 본 발명에 따른 디스크 브레이크는 쐐기부재와 안내부재의 상호작용에 의해 쐐기부재가 디스크 쪽으로 전진하여 제동력을 발휘하는 경우 자속작용에 의해 구동모터의 동작을 정지해도 제동력이 바로 해제되지 않는 문제점을 해결하여, 제동해제부재를 통해 쐐기부재가 후퇴되도록 함으로써 제동응답성이 향상되는 효과가 있다.As described in detail above, in the disc brake according to the present invention, when the wedge member moves toward the disc and exerts a braking force by the interaction of the wedge member and the guide member, the braking force is immediately stopped even when the driving motor is stopped by the magnetic flux action. By solving the problem that is not released, there is an effect that the braking response is improved by allowing the wedge member to retreat through the brake release member.

Claims (3)

차량의 휠과 함께 회전하는 디스크와, 상기 디스크의 일측면과 마찰하며 제동력을 발생시키는 가동 마찰패드와, 그 일면에 상기 가동 마찰패드가 부착되며 동력을 발생시키는 구동모터에 의해 상기 디스크의 회전방향으로 이동하며 상기 디스크측으로 전진하는 쐐기부재와, 상기 쐐기부재가 상기 디스크측으로 전진하도록 안내하는 안내부재를 포함한 디스크 브레이크에 있어서, A rotational direction of the disk by a disk rotating together with a wheel of a vehicle, a movable friction pad that generates a braking force by friction with one side of the disk, and a driving motor to which the movable friction pad is attached and generates power In the disk brake including a wedge member moving forward to the disk side and the guide member for guiding the wedge member to advance to the disk side, 상기 쐐기부재와 상기 구동모터사이에는 상기 구동모터의 회전축에 의한 회전운동을 상기 쐐기부재를 진퇴시키기 위한 직선운동으로 변환하기 위한 동력전달 부재와, 상기 동력전달부재와 상기 쐐기부재사이에 개재되어 상기 동력전달부재의 후퇴시 상기 쐐기부재가 후퇴되어 제동력이 해제되도록 하는 제동해제부재가 설치되는 것을 특징으로 하는 디스크 브레이크.Between the wedge member and the drive motor is a power transmission member for converting the rotational movement by the rotational axis of the drive motor into a linear motion for advancing the wedge member, interposed between the power transmission member and the wedge member and the Disc brake, characterized in that the brake release member is installed so that the wedge member is retracted when the power transmission member is retracted to release the braking force. 제 1 항에 있어서, 상기 제동해제부재는 탄성부재로 형성되는 것을 특징으로하는 디스크 브레이크.The disc brake of claim 1, wherein the brake releasing member is formed of an elastic member. 제 1항에 있어서, The method of claim 1, 상기 동력전달부재는 상기 구동모터의 회전축에 형성된 스크류부의 외주연에 결합되어 상기 스크류부의 회전운동에 따라 축방향으로 직선운동하는 너트부를 포함하는 것을 특징으로 하는 디스크 브레이크.The power transmission member is coupled to the outer periphery of the screw portion formed on the rotating shaft of the drive motor disk brake, characterized in that it comprises a nut linearly moving in the axial direction in accordance with the rotational movement of the screw portion.
KR1020070072295A 2007-07-19 2007-07-19 Disk brake for vehicle KR20090008931A (en)

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