KR100799495B1 - Disk brake for vehicle - Google Patents

Disk brake for vehicle Download PDF

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Publication number
KR100799495B1
KR100799495B1 KR1020070029744A KR20070029744A KR100799495B1 KR 100799495 B1 KR100799495 B1 KR 100799495B1 KR 1020070029744 A KR1020070029744 A KR 1020070029744A KR 20070029744 A KR20070029744 A KR 20070029744A KR 100799495 B1 KR100799495 B1 KR 100799495B1
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KR
South Korea
Prior art keywords
wedge
disk
power transmission
friction pad
vehicle
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KR1020070029744A
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Korean (ko)
Inventor
김종기
Original Assignee
주식회사 만도
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Priority to KR1020070029744A priority Critical patent/KR100799495B1/en
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Publication of KR100799495B1 publication Critical patent/KR100799495B1/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
    • F16D55/22655—Constructional details of guide 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
    • 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
    • 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

A disk brake for a vehicle is provided to accomplish superior braking performance regardless of abrasion of a friction pad by advancing/retreating a rotation shaft of a driving apparatus through a through-hole formed on a wedge housing member such that a displacement of a wedge member is increased. A disk brake for a vehicle comprises a disk(10) rotating together with a wheel, friction pads(20a,20b) provided at two sides of the disk, a wedge member(50) having a first surface attached to the friction pad and a second surface inclined relative to the disk, a wedge housing member(60) coupled to the wedge member, a driving apparatus(70) having a driving motor, a transmission provided on a rotation shaft(71) of the driving apparatus. The transmission includes a first transmission member provided between the wedge member and the wedge housing member and a second transmission member provided between the wedge housing member and the driving motor.

Description

차량용 디스크 브레이크{Disk Brake For Vehicle}Disk Brake For Vehicle

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

도 2는 본 발명에 따른 디스크 브레이크의 요부를 나타내는 개략적인 단면도이다.2 is a schematic cross-sectional view showing the main portion of the disc brake according to the present invention.

도 3은 본 발명에 따른 디스크 브레이크의 마찰패드의 마모시의 제동상태를 보인 개략적인 단면도이다. Figure 3 is a schematic cross-sectional view showing a braking state during wear of the friction pad 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 *

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

30 : 캘리퍼하우징 40 : 캐리어30: caliper housing 40: carrier

50 : 쐐기부재 51 : 쐐기면50: wedge member 51: wedge surface

52 : 제1안착부 60 : 쐐기수용부재 52: first seating portion 60: wedge receiving member

61 : 관통공 62 : 제2안착부 61: through hole 62: second seat

70 : 구동장치 71 : 회전축 70: drive device 71: rotating shaft

80 : 제1동력전달부재 90 : 제2동력전달부재80: first power transmission member 90: second power transmission member

100 : 가이드부재100: guide member

본 발명은 차량용 브레이크에 관한 것으로, 더욱 상세하게는 구동장치에 의해 디스크의 회전방향측으로 이동하며 마찰패드를 디스크에 압박하는 쐐기부재를 갖춘 차량용 디스크 브레이크에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle brake, and more particularly, to a vehicle brake having a wedge member which is moved toward the rotational direction of the disk by a drive device and presses the friction pad against the disk.

일반적으로 차량용 디스크 브레이크는 휠과 함께 회전하는 원판형상의 디스크 일부를 양측에서 마찰패드로 압박하여 제동력을 얻는 장치로써, 이러한 차량용 디스크 브레이크 중에는 차량의 휠과 함께 회전하는 디스크와, 디스크의 양측면과 마찰하며 제동력을 발생시키는 마찰패드와, 일면에 어느 하나의 마찰패드가 부착되며 디스크의 회전방향측에 위치한 단부의 배면이 디스크에 대하여 경사지게 형성되어 쐐기형상으로 형성되는 쐐기부재와, 쐐기부재를 디스크의 회전방향측으로 진퇴 이동시키는 구동장치와, 쐐기부재의 배면과 대응하도록 전면이 경사지게 형성되며 디스크와의 사이에 쐐기부재가 물릴 수 있게 하는 안내부재를 포함하여 쐐기부재가 디스크와 안내부재 사이에 물려지도록 함으로써 적은 동력으로도 큰 제동력을 얻을 수 있도록 한 차량용 디스크 브레이크가 있다. 즉, 쐐기부재를 이용하는 디스크 브레이크는 구동장치의 회전력을 직선 방향의 힘으로 바꾸고, 다시 이 직선 방향의 힘과 쐐기를 이용하여 차량을 제동함으로써 제동시 쐐기 효과에 의해 회전하는 디스크의 운동에너지가 제동에너지로 사용되므로 구동장치의 작은 힘으로도 차량을 정지시킬 수가 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, the disc that rotates with the wheel of the vehicle and friction with both sides of the disc And a friction pad for generating a braking force, any one friction pad is attached to one surface, and a rear surface of an end portion located at the rotational side of the disk to be inclined with respect to the disk to form a wedge shape, and the wedge member of the disk. And a drive device for moving forward and backward in the rotational direction, and a guide member formed to be inclined to correspond to the rear surface of the wedge member and allowing the wedge member to be bitten between the disc and the wedge member so as to be clamped between the disc and the guide member. By doing so, you can get great braking force with less power. One vehicle has disc brakes. That is, the disc brake using the wedge member converts the rotational force of the drive device into a linear force, and again brakes the vehicle using the linear force and the wedge to brake the kinetic energy of the disc rotating by the wedge effect during braking. Since it is used as energy, the vehicle can be stopped with a small force of the driving device.

이러한 종래의 차량용 디스크 브레이크에는 구동장치의 회전운동을 직선운동으로 변환하는 동력변환부재를 이용하여 쐐기부재를 가압하면 마찰패드가 디스크에 물려지게 되는데, 이때 쐐기부재의 경사면과 안내부재의 경사면이 접촉하여 큰 제동력을 발휘하게 된다.In such a conventional disc brake for a vehicle, when the wedge member is pressed using a power conversion member that converts the rotational movement of the drive device into a linear motion, the friction pad is bitten by the disc. This results in a great braking force.

그러나 종래의 차량용 디스크 브레이크의 구동장치의 회전축은 길이가 짧기 때문에 회전축을 진퇴 운동하는 동력전달부재의 진퇴변위가 작아지게 된다. 따라서 마찰패드의 마모가 심하게 발생한 경우 동력전달부재의 전진이 한계가 있기 때문에 마찰패드가 디스크에 마찰하기 어려워져 제동력을 발휘하기 곤란해지는 문제점이 있다. 또한 안내부재가 고정된 상태에서 동력전달부재가 쐐기부재를 전진시키기 때문에 마모가 증가할수록 안내부재와 쐐기부재사이의 간극이 넓어지게 되어 제동시 쐐기부재가 부착된 마찰부재가 디스크의 회전방향으로 이동하는 양이 증가하게 된다. 따라서 양측에 마찰부재의 압착위치가 상이하게 되어 제동력이 저하되는 문제점이 있다. However, since the rotation shaft of the drive device of the conventional disc brake for a vehicle is short, the displacement of the power transmission member moving forward and backward of the rotation shaft becomes small. Therefore, when the wear of the friction pad is severe, since the forward of the power transmission member is limited, the friction pad is difficult to rub against the disk, which makes it difficult to exert a braking force. In addition, since the power transmission member advances the wedge member while the guide member is fixed, the gap between the guide member and the wedge member increases as the wear increases, so that the friction member with the wedge member attached to the disc moves in the rotational direction of the disc during braking. The amount to do is increased. Therefore, the pressing position of the friction member is different on both sides, there is a problem that the braking force is lowered.

본 발명은 상술한 종래기술의 문제점을 해결하기 위한 것으로, 본 발명의 목적은 마찰부재의 마모시에도 일정한 제동능력을 발휘할 수 있는 차량의 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 of a vehicle that can exhibit a constant braking ability even when the friction member is worn.

이러한 목적을 달성하기 위한 본 발명은 차량의 휠과 함께 회전하는 디스크와, 상기 디스크의 양측에 마련되어 제동력을 발생시키는 마찰패드와, 일면이 상기 마찰패드에 부착되며 타면이 상기 디스크에 대하여 경사지게 형성된 쐐기면을 구비하는 쐐기부재와, 상기 쐐기부재의 쐐기면과 대응하도록 경사지게 형성되어 상기 쐐기부재와 결합하여 제동력을 증가시키는 쐐기수용부재와, 상기 마찰패드를 상기 디스크측으로 진퇴시키는 구동모터를 포함하는 구동장치와, 상기 구동모터의 회전축에 마련되어 회전운동을 직선운동으로 변환하기 위한 동력전달부재를 포함하되, 상기 동력전달부재는 상기 쐐기부재와 상기 쐐기수용부재사이에 마련되어 상기 마찰패드를 진퇴시켜 제동력을 발휘하는 제1동력전달부재와, 상기 쐐기수용부재와 상기 구동모터사이에 마련되어 상기 쐐기수용부재를 지지하는 제2동력전달부재를 포함하는 것을 특징으로 한다.The present invention for achieving this object is a disk that rotates with the wheel of the vehicle, a friction pad provided on both sides of the disk to generate a braking force, and one side is attached to the friction pad and the other side is formed wedge with respect to the disk A wedge member having a surface, a wedge receiving member which is formed to be inclined to correspond to the wedge surface of the wedge member and is coupled with the wedge member to increase a braking force, and a drive motor for advancing the friction pad to the disc side. Apparatus and a power transmission member provided on the rotating shaft of the drive motor for converting the rotational movement into a linear motion, wherein the power transmission member is provided between the wedge member and the wedge receiving member to advance the friction pad to provide braking force. A first power transmission member to exert, the wedge receiving member and the drive shaft Provided between characterized in that a second power transmission member for supporting said wedge housing member.

또한, 상기 쐐기부재에는 상기 제1동력전달부재의 일측이 수용될 수 있도록 제1안착부가 형성된다.In addition, the wedge member is formed with a first seating portion to accommodate one side of the first power transmission member.

또한, 상기 쐐기수용부재에는 상기 제1동력전달부재의 타측이 수용될 수 있도록 제2안착부가 형성된다.In addition, the wedge receiving member is provided with a second seating portion to accommodate the other side of the first power transmission member.

또한, 상기 쐐기수용부재는 관통홀이 형성되며 상기 회전축은 상기 관통홀을 따라 진퇴가능하게 마련된다.In addition, the wedge receiving member is formed with a through hole and the rotating shaft is provided to be retractable along the through hole.

또한, 상기 쐐기수용부재의 진퇴를 가이드하기 위한 가이드부재를 더 포함한다.In addition, the guide member for guiding the advance of the wedge receiving member further includes.

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 마찰 패드(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.

또한 본 발명에 따른 차량용 디스크 브레이크는 일면이 마찰패드(20a)에 부착되며 타면이 디스크(10)에 대하여 경사지게 형성되어 있는 쐐기부재(50)와, 쐐기부재(50)의 쐐기면(51)과 대응하도록 경사지게 형성되어 쐐기부재(50)와 결합하여 제동력을 증가시키는 쐐기수용부재(60)와, 마찰패드(20a)를 디스크(10)측으로 진퇴시키는 구동장치(70)를 포함하여 이루어진다.In addition, the vehicle disk brake according to the present invention has a wedge member 50 having one surface attached to the friction pad 20a and the other surface being inclined with respect to the disk 10, and the wedge surface 51 of the wedge member 50. The wedge receiving member 60 is formed to be inclined to correspond to the wedge member 50 to increase the braking force, and the driving device 70 moves the friction pad 20a to the disk 10 side.

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(50)에 설치되어 쐐기부재(50)와 함께 이동하는 마찰패드(20a)를 가동 마찰패드(20a)라 하며, 핑거부(32)에 설치되어 있는 마찰패드(20b)를 고정 마찰패드(20b)라 한다.The other side of the caliper housing 30 is provided with a finger portion 32 is provided with another friction pad 20b. In the present embodiment, the friction pad 20a, which is installed on the wedge member 50 among the two friction pads 20a and 20b and moves together with the wedge member 50, is referred to as a movable friction pad 20a. The friction pad 20b provided in the) is called a fixed friction pad 20b.

쐐기부재(50)의 전면에 설치되어 있는 가동 마찰패드(20a)가 디스크(10)의 일측면과 전체적으로 고르게 접촉할 수 있도록 디스크(10)의 측면과 평행하게 배치 되어 있으며, 쐐기부재(50)의 배면은 디스크(10)를 향하여 소정각도로 경사지게 형성된 복수의 쐐기면(51)이 형성된다. 또한 쐐기면(51)의 중앙측에는 후술할 제1동력전달부재(90)의 일측이 수용될 수 있도록 제1안착부(52)가 형성된다. 제1안착부(52)는 대략 직사각형 형상으로 쐐기면(51)에 대해 하향으로 함몰되어 형성되어 제1동력전달부재(90)가 삽입될 수 있도록 한다.The movable friction pad 20a provided on the front surface of the wedge member 50 is disposed in parallel with the side surface of the disk 10 so as to be in uniform contact with one side of the disk 10, and the wedge member 50 The rear surface of the plurality of wedge surface 51 is formed to be inclined at a predetermined angle toward the disk 10 is formed. In addition, the first seating portion 52 is formed at the central side of the wedge surface 51 to accommodate one side of the first power transmission member 90 to be described later. The first seating portion 52 is formed to be recessed downward with respect to the wedge surface 51 in a substantially rectangular shape so that the first power transmission member 90 can be inserted therein.

또한, 쐐기수용부재(60)는 쐐기부재(50)의 후방에 마련되어 쐐기부재(50)의 쐐기면(51)을 지지할 수 있도록 전면이 쐐기부재(50)의 쐐기면(51)과 대응하도록 경사면(64)이 형성되어 있다.In addition, the wedge receiving member 60 is provided at the rear of the wedge member 50 so that the front surface thereof corresponds to the wedge surface 51 of the wedge member 50 so as to support the wedge surface 51 of the wedge member 50. The inclined surface 64 is formed.

본 실시예에서 쐐기부재(50)의 쐐기면(51)은 그 중앙측을 중심으로 양측으로 대칭되도록 전방측을 향하여 경사지게 형성되며, 쐐기수용부재(60)의 전면은 그 중앙측이 후방측으로 오목하게 형성되며 그 양측이 쐐기부재(50)의 쐐기면(51)과 대응하도록 경사지게 형성되어 차량의 좌우측 휠에 모두 적용될 수 있도록 되어 있다.In the present embodiment, the wedge surface 51 of the wedge member 50 is formed to be inclined toward the front side so as to be symmetrical to both sides about the center side thereof, and the front side of the wedge receiving member 60 has its center side concave to the rear side. It is formed so as to be inclined to correspond to the wedge surface 51 of the wedge member 50 is to be applied to both the left and right wheels of the vehicle.

이때 쐐기수용부재(60)의 중앙측에는 구동모터(70)의 회전축(71)이 관통하여 돌출되도록 관통홀(61)이 형성된다. 따라서 종래의 관통홀이 없는 쐐기수용부재에 비해 쐐기부재의 진퇴변위가 길어지게 되어 마찰패드(20a)의 마모가 심한 경우에도 쐐기부재(50)의 전진에 의해 일정한 제동력을 발휘할 수 있게 된다.At this time, the through hole 61 is formed at the central side of the wedge receiving member 60 so that the rotation shaft 71 of the driving motor 70 penetrates and protrudes. Therefore, the wedge member has a longer displacement than the wedge receiving member without a conventional through hole, so that even when the friction pad 20a is severely worn, the braking force can be exerted by advancing the wedge member 50.

또한 본 발명의 차량용 디스크 브레이크는 가동마찰패드(20a)를 디스크(10)측으로 진퇴시키기 위한 구동력을 발휘하는 구동장치(70)를 구비한다.In addition, the vehicular disk brake of the present invention includes a driving device 70 that exerts a driving force for advancing and moving the movable friction pad 20a to the disk 10 side.

구동장치(70)는 구동모터(72)와, 구동모터(72)의 회전축(71)에 마련되어 구 동모터(72)의 회전운동을 직선운동으로 변환하기 위한 동력전달부재(80,90)가 마련된다.The driving device 70 is provided on the drive motor 72 and the rotation shaft 71 of the drive motor 72 so that the power transmission members 80 and 90 for converting the rotational motion of the drive motor 72 into linear motion are provided. Prepared.

이러한 동력전달부재(80,90)는 동력전달부재(80,90) 자체의 회전을 방지하기 위해 직육면체 형상으로 마련되고, 쐐기부재(50)와 쐐기수용부재(60)사이에 마련되어 가동마찰패드(20a)를 진퇴시키는 제1동력전달부재(90)와, 쐐기수용부재(60)와 구동모터(72)사이에 마련되어 쐐기수용부재(60)를 지지하는 제2동력전달부재(80)를 포함하여 이루어진다.The power transmission member (80,90) is provided in a rectangular parallelepiped shape in order to prevent the rotation of the power transmission member (80,90) itself, provided between the wedge member 50 and the wedge receiving member (60) movable friction pad ( A first power transmission member 90 for advancing and retracting 20a, and a second power transmission member 80 provided between the wedge receiving member 60 and the drive motor 72 to support the wedge receiving member 60. Is done.

제1동력전달부재(90)의 중앙에는 회전축(71)이 결합될 수 있도록 암나사부(91)가 형성되어 구동모터(71)의 구동에 의해 제1동력전달부재(90)는 회전축(71)상에서 진퇴가능하게 된다.A female screw portion 91 is formed at the center of the first power transmission member 90 so that the rotation shaft 71 can be coupled, and the first power transmission member 90 is rotated by the driving motor 71. Retractable in the stomach.

제1동력전달부재(90)와 인접하여 마련되는 쐐기부재(50)에는 제1동력전달부재(90)의 전면측을 삽입하기 위한 제1안착부(52)가 마련되며, 쐐기수용부재(60)에는 제1동력전달부재(90)의 후면측을 삽입하기 위한 제2안착부(62)가 마련된다. 따라서 제1동력전달부재(90)는 제1안착부(52)와 제2안착부(62)사이에 형성된 공간에 삽입되어 쐐기부재(50)의 쐐기면(51)과 쐐기수용부재(60)의 경사면(64)이 접하여 제동력을 증가시킬 수 있도록 한다.The wedge member 50 provided adjacent to the first power transmission member 90 is provided with a first seating portion 52 for inserting the front side of the first power transmission member 90, and the wedge receiving member 60. ) Is provided with a second seating portion 62 for inserting the rear side of the first power transmission member 90. Therefore, the first power transmission member 90 is inserted into the space formed between the first seating portion 52 and the second seating portion 62 to form the wedge surface 51 and the wedge receiving member 60 of the wedge member 50. The inclined surface 64 of the contact is to increase the braking force.

제 2동력전달부재(80)의 일측은 구동장치(70)의 전방에 인접하도록 마련되고 타측은 쐐기수용부재(60)의 후면에 접하도록 마련된다.One side of the second power transmission member 80 is provided to be adjacent to the front of the drive device 70 and the other side is provided to contact the rear surface of the wedge receiving member (60).

또한 구동장치(70)와 쐐기부재(50)사이에는 가동마찰패드(20a)와 디스크(10)의 마찰시 쐐기부재(50)를 통해 쐐기수용부재(60)가 디스크(10)의 회전방향으로 유 동하는 것을 방지하기 위한 가이드부재(100)가 구비된다. 가이드부재(100)는 쐐기수용부재(60)에 전달된 힘이 회전축(71)이 설치된 동력전달부재(80)에 전달되는 것을 방지하기 위한 것으로 본 실시예에서 가이드부재(100)는 쐐기부재(50)측으로 개방되며, 쐐기수용부재(60)의 양측단이 가이드부재(100)에 의해 가이드되어 진퇴가능하게 된다.In addition, between the drive device 70 and the wedge member 50, the wedge receiving member 60 is moved in the rotational direction of the disc 10 through the wedge member 50 during friction between the movable friction pad 20a and the disc 10. Guide member 100 is provided to prevent the flow. The guide member 100 is to prevent the force transmitted to the wedge receiving member 60 from being transmitted to the power transmission member 80 provided with the rotating shaft 71. In this embodiment, the guide member 100 is a wedge member ( 50 is opened to the side, both ends of the wedge receiving member 60 is guided by the guide member 100 to be able to move forward and backward.

미설명 부호 "110"은 동력전달부재(80,90)와 쐐기부재(50) 및 쐐기수용부재(60)를 덮어 동력전달부재(80,90) 및 쐐기부재(50)가 캘리퍼하우징(30)에 설치되어 있는 상태를 유지할 수 있게 하는 덮개(110)이다.Reference numeral 110 denotes a power transmission member 80, 90, a wedge member 50, and a wedge receiving member 60 to cover the power transmission member 80, 90 and the wedge member 50 with the caliper housing 30. The cover 110 to maintain the state installed in.

다음으로는 이러한 본 발명에 따른 차량용 디스크 브레이크의 동작에 대해 설명하기로 한다.Next, the operation of the vehicular disk brake according to the present invention will be described.

제동을 시작하게 되면 구동장치(70)의 구동력에 의해 회전축(71)이 회전하면서 회전축(71)에 마련된 제1,2동력전달부재(80,90)는 회전축(71)에 대해 직선 운동을 하게 된다. 이때 회전 토크가 직선 방향의 힘으로 전환되는데, 이러한 제1동력전달부재(90)는 쐐기부재(60)를 디스크(10)측을 향하여 밀게 되어 쐐기부재(50)와 일체로 형성된 가동마찰패드(20a)가 디스크(10)에 접촉한다.When the braking starts, the rotation shaft 71 rotates by the driving force of the driving device 70, and the first and second power transmission members 80 and 90 provided on the rotation shaft 71 make linear movement with respect to the rotation shaft 71. do. At this time, the rotation torque is converted into a force in a linear direction, the first power transmission member 90 is pushed the wedge member 60 toward the disk 10 side movable friction pad integrally formed with the wedge member 50 ( 20a contacts the disk 10.

이때 가동마찰패드(20a)와 디스크(10) 사이에 마찰력이 발생하게 되고, 이러한 마찰력에 의해 쐐기부재(50)는 쐐기수용부재(60)와 압착하게 되며, 이후로는 쐐기면(51)을 따라 경사면 운동을 하게 된다. 이때 쐐기 효과에 의해 쐐기부재(50)와 쐐기수용부재(60)의 경사면에서는 제동을 할 수 있을 만큼의 큰 힘이 발생한다. 즉, 구동장치(70)의 작은 힘으로 쐐기부재(50)의 도움으로 차량을 정지시킬 정도의 충분히 큰 힘으로 증폭되는 것이다. 여기서 마찰패드(20a)와 디스크(10) 간의 마찰 계수가 쐐기면(51)의 경사각의 tan 값보다 작을 경우, 제동이 끝나면 마찰패드(20a)는 자동으로 롤백(Rollback)이 되며, 바로 이 자동 롤백에 의해 마찰패드(20a)와 디스크(10) 간의 간격은 자동으로 조절이 된다.At this time, a friction force is generated between the movable friction pad 20a and the disk 10, and by this friction, the wedge member 50 is pressed against the wedge receiving member 60, and the wedge surface 51 is thereafter. Along the slope movement. At this time, due to the wedge effect, a large force generated enough to brake the inclined surfaces of the wedge member 50 and the wedge receiving member 60 is generated. That is, it is amplified by a force large enough to stop the vehicle with the help of the wedge member 50 with a small force of the drive device 70. Here, when the friction coefficient between the friction pad 20a and the disk 10 is smaller than the tan value of the inclination angle of the wedge surface 51, the friction pad 20a automatically rolls back when braking is completed. The gap between the friction pad 20a and the disk 10 is automatically adjusted by the rollback.

또한 가동마찰패드(20a)가 디스크(10)를 압착할 때 압착하는 방향과 반대방향으로 반력이 작용하게 되고, 이러한 반력에 의해 쐐기수용부재(60)가 구동모터(72)측으로 밀리게 되는데, 이때 제2동력전달부재(80)는 쐐기수용부재(60)의 후면을 지지하여 쐐기수용부재(60)가 구동모터(72)측으로 밀리지 아니하도록 함으로써 쐐기 효과를 유지시켜 주게 된다.In addition, when the movable friction pad 20a compresses the disk 10, a reaction force acts in a direction opposite to that in which the movable friction pad 20a is pressed, and the wedge receiving member 60 is pushed toward the driving motor 72 by this reaction force. At this time, the second power transmission member 80 maintains the wedge effect by supporting the rear surface of the wedge receiving member 60 so that the wedge receiving member 60 is not pushed toward the driving motor 72.

또한 본 발명에 따른 차량용 디스크 브레이크는 쐐기수용부재(60)와 쐐기부재(50)가 거의 일체형으로 움직임으로써 차량의 전진 제동 후 후진 제동 시 혹은 후진 제동 후 전진 제동 시 제동이 안 되는 구간이 발생하지 않으며, 제동 시 가동마찰패드(20a)가 디스크(10)의 회전 방향으로 이동하는 것을 최소화하며 가동마찰패드(20a)와 고정마찰패드(20a)가 거의 같은 위치에서 디스크(10)를 압착하게 된다. 또한 일반적인 캘리퍼의 특성을 그대로 이용하여 가동마찰패드(20a)가 디스크(10)를 압착할 때 작용하는 반력을 캘리퍼 하우징(30)에 작용하게 하여 캘리퍼하우징(30)이 고정마찰패드(20a)를 밀어 디스크(10)의 반대쪽 면을 압착하게 된다.In addition, in the disc brake for a vehicle according to the present invention, the wedge accommodating member 60 and the wedge member 50 move almost integrally so that a section in which the brake is not braked when the vehicle is braked backward or after forward braking does not occur. When the braking, the movable friction pad 20a is minimized in the rotational direction of the disk 10, and the movable friction pad 20a and the fixed friction pad 20a are compressed at almost the same position. . In addition, by using the characteristics of the general caliper as it is, the friction force acting when the movable friction pad 20a compresses the disk 10 acts on the caliper housing 30, so that the caliper housing 30 uses the fixed friction pad 20a. Push to compress the opposite side of the disk (10).

또한 본 발명에 따른 차량용 디스크 브레이크는 도3에 도시된 바와 같이 구동장치(70)의 회전축(71)은 쐐기수용부재(60)의 관통홀(61)을 통과하여 종래기술에 비해 상대적으로 길게 마련되므로 마찰패드(20a)의 마모가 심한 경우에도 마모된 양만큼 제1동력전달부재(90)가 쐐기부재(50)를 밀게 되므로 쐐기부재(50)가 전진하게 되어 마찰패드(20a)의 마모를 보상할 수 있게 되어 마찰패드(20a)의 마모에도 불구하고 일정한 정도의 제동력을 발휘할 수 있게 된다.In addition, the disc brake for a vehicle according to the present invention, as shown in Figure 3, the rotation shaft 71 of the drive device 70 passes through the through-hole 61 of the wedge receiving member 60 is provided relatively longer than the prior art Therefore, even when the wear of the friction pad 20a is severe, the first power transmission member 90 pushes the wedge member 50 by the amount of wear, so that the wedge member 50 moves forward to reduce the wear of the friction pad 20a. It is possible to compensate and thus exhibit a certain degree of braking force despite the wear of the friction pad 20a.

또한 주차 시에는 쐐기부재(50)를 디스크(10)가 압착될 때까지 밀어준 후 그 상태를 유지함으로써 주차 기능도 함께 제공하게 된다.In addition, during parking, the wedge member 50 is pushed until the disk 10 is compressed, and then the parking function is maintained by maintaining the state.

이상에서 상세히 설명한 바와 같이, 본 발명에 따른 차량용 디스크브레이크는 제1동력전달부재가 쐐기부재를 진퇴시키고 제2동력전달부재가 쐐지수용부재를 지지함으로써 제동력을 향상시킬 수 있으며 쐐기수용부재에 관통홀을 형성하고 회전축을 관통홀로 진퇴시켜 마찰패드의 마모시에도 일정한 정도의 제동력을 발휘할 수 있으며 컴팩트한 구성이 가능하게 되는 효과가 있다.As described in detail above, the vehicle disc brake according to the present invention can improve the braking force by the first power transmission member to advance and retract the wedge member and the second power transmission member to support the wedge receiving member and penetrate the wedge receiving member. By forming a hole and advancing the rotating shaft to the through hole, the braking force can be exhibited to a certain degree even when the friction pad is worn, and the compact configuration is possible.

Claims (5)

차량의 휠과 함께 회전하는 디스크와, A disk that rotates with the wheel of the vehicle 상기 디스크의 양측에 마련되어 제동력을 발생시키는 마찰패드와, Friction pads provided at both sides of the disk to generate a braking force; 일면이 상기 마찰패드에 부착되며 타면이 상기 디스크에 대하여 경사지게 형성된 쐐기면을 구비하는 쐐기부재와, A wedge member having one surface attached to the friction pad and the other surface having a wedge surface inclined with respect to the disk; 상기 쐐기부재의 쐐기면과 대응하도록 경사지게 형성되어 상기 쐐기부재와 결합하여 제동력을 증가시키는 쐐기수용부재와,Wedge receiving member is formed to be inclined to correspond to the wedge surface of the wedge member to increase the braking force in combination with the wedge member, 상기 마찰패드를 상기 디스크측으로 진퇴시키는 구동모터를 포함하는 구동장치와,A drive device including a drive motor for advancing and retracting the friction pad toward the disc; 상기 구동모터의 회전축에 마련되어 회전운동을 직선운동으로 변환하기 위한 동력전달부재를 포함하되,It includes a power transmission member provided on the rotating shaft of the drive motor for converting the rotational motion into a linear motion, 상기 동력전달부재는 상기 쐐기부재와 상기 쐐기수용부재사이에 마련되어 상기 마찰패드를 진퇴시켜 제동력을 발휘하는 제1동력전달부재와, 상기 쐐기수용부재와 상기 구동모터사이에 마련되어 상기 쐐기수용부재를 지지하는 제2동력전달부재를 포함하는 것을 특징으로 하는 차량용 디스크 브레이크. The power transmission member is provided between the wedge member and the wedge receiving member, and is provided between the wedge receiving member and the driving motor to support the wedge receiving member. Disc brake for a vehicle comprising a second power transmission member. 제 1 항에 있어서, 상기 쐐기부재에는 상기 제1동력전달부재의 일측이 수용될 수 있도록 제1안착부가 형성된 것을 특징으로 하는 차량용 디스크 브레이크. The disc brake of claim 1, wherein a first seat is formed in the wedge member to accommodate one side of the first power transmission member. 제 1 항에 있어서, 상기 쐐기수용부재에는 상기 제1동력전달부재의 타측이 수용될 수 있도록 제2안착부가 형성된 것을 특징으로 하는 차량용 디스크 브레이크.The disk brake of claim 1, wherein the wedge receiving member is provided with a second seating portion to accommodate the other side of the first power transmission member. 제 1항에 있어서, 상기 쐐기수용부재는 관통홀이 형성되며 상기 회전축은 상기 관통홀을 따라 진퇴가능하게 마련되는 것을 특징으로 하는 차량용 디스크 브레이크.The disc brake of claim 1, wherein the wedge receiving member has a through hole formed therein, and the rotating shaft is provided to be retractable along the through hole. 제 1 항에 있어서, 상기 쐐기수용부재의 진퇴를 가이드하기 위한 가이드부재를 더 포함하는 것을 특징으로 하는 차량용 디스크 브레이크.2. The disc brake for a vehicle according to claim 1, further comprising a guide member for guiding the retraction of the wedge receiving member.
KR1020070029744A 2007-03-27 2007-03-27 Disk brake for vehicle KR100799495B1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05272562A (en) * 1992-03-24 1993-10-19 Nissin Kogyo Kk Caliper support structure for pin sliding vehicle disk brake
KR19980030481U (en) * 1996-11-29 1998-08-17 양재신 Disc brake structure of automobile
KR20020078015A (en) * 2001-04-04 2002-10-18 주식회사 만도 Pad of disk brake
JP2002323075A (en) 2001-04-26 2002-11-08 Nissin Kogyo Co Ltd Rotation prevention mechanism of advancing/retreating motion mechanism in electrical type disk brake

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05272562A (en) * 1992-03-24 1993-10-19 Nissin Kogyo Kk Caliper support structure for pin sliding vehicle disk brake
KR19980030481U (en) * 1996-11-29 1998-08-17 양재신 Disc brake structure of automobile
KR20020078015A (en) * 2001-04-04 2002-10-18 주식회사 만도 Pad of disk brake
JP2002323075A (en) 2001-04-26 2002-11-08 Nissin Kogyo Co Ltd Rotation prevention mechanism of advancing/retreating motion mechanism in electrical type disk brake

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