KR20120003299A - Plunger type master cylinder for brake - Google Patents

Plunger type master cylinder for brake Download PDF

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Publication number
KR20120003299A
KR20120003299A KR1020100064074A KR20100064074A KR20120003299A KR 20120003299 A KR20120003299 A KR 20120003299A KR 1020100064074 A KR1020100064074 A KR 1020100064074A KR 20100064074 A KR20100064074 A KR 20100064074A KR 20120003299 A KR20120003299 A KR 20120003299A
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South Korea
Prior art keywords
brake
diameter member
master cylinder
seal cup
outer diameter
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KR1020100064074A
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Korean (ko)
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KR101638846B1 (en
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차면규
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현대모비스 주식회사
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Priority to KR1020100064074A priority Critical patent/KR101638846B1/en
Publication of KR20120003299A publication Critical patent/KR20120003299A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B60T11/16—Master control, e.g. master cylinders
    • B60T11/236—Piston sealing arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B60T11/16—Master control, e.g. master cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B60T11/16—Master control, e.g. master cylinders
    • B60T11/20—Tandem, side-by-side, or other multiple master cylinder units
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J1/00—Pistons; Trunk pistons; Plungers
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J10/00—Engine or like cylinders; Features of hollow, e.g. cylindrical, bodies in general
    • F16J10/02—Cylinders designed to receive moving pistons or plungers
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transmission Of Braking Force In Braking Systems (AREA)

Abstract

PURPOSE: A plunger master cylinder for a brake is provided to improve the operating stability of an apparatus with the prevention of the rolling phenomenon that a seal cup is carried to top and bottom by contacting the seal cup with the inner side of a hydraulic chamber. CONSTITUTION: A plunger master cylinder for a brake comprises a cylinder body(10), a piston unit(20), and a seal cup(30). The cylinder body includes a pressure chamber which is provided with brake oil through a supply port(12). The piston unit is elastically supported in the inner side of the cylinder body with a spring. The piston unit is carried by the operation of a boost and changes the pressure of a pressure chamber. The seal cup includes an outer diameter member(31) and an inner diameter member(33). The outer diameter member is arranged to be contacted with a hydraulic chamber which is included between a relief port(26) and the supply port in the piston unit. The inner diameter member is connected to a connection member which is bent to an inner side in the outer diameter member.

Description

브레이크용 플런저 마스터실린더{PLUNGER TYPE MASTER CYLINDER FOR BRAKE}Plunger master cylinder for brakes {PLUNGER TYPE MASTER CYLINDER FOR BRAKE}

본 발명은 브레이크용 플런저 마스터실린더에 관한 것으로서, 보다 상세하게는 브레이크오일의 유동 저항을 감소시켜 동작신뢰성을 향상시킬 수 있는 브레이크용 플런저 마스터실린더에 관한 것이다.
The present invention relates to a plunger master cylinder for a brake, and more particularly, to a plunger master cylinder for a brake that can improve the operation reliability by reducing the flow resistance of the brake oil.

일반적으로, 차량의 브레이크 시스템(Brake System)은 주행하는 차량을 감속 또는 정지시키는 작용을 한다.In general, a brake system of a vehicle serves to decelerate or stop a driving vehicle.

이러한 브레이크 시스템은 브레이크페달의 조작에 의해 발생된 유압을 매개로 제동하는 유압식 브레이크와, 대형자동차등 큰 제동력을 필요로 하는 경우에 사용하는 배력식 브레이크 및 압축공기의 압력을 이용해 제동력을 발생하는 공기브레이크로 등으로 분류된다.The brake system is a hydraulic brake that brakes the hydraulic pressure generated by the operation of the brake pedal, and air that generates the braking force by using the pressure of the booster brake and compressed air used in the case of requiring a large braking force such as a large vehicle. Such as brakes.

유압식 브레이크는 브레이크 페달의 조작력을 배력하는 부스터와 연결된 마스터실린더의 동작으로 유압을 생성한다.The hydraulic brake generates hydraulic pressure by the operation of the master cylinder connected with the booster that boosts the operating force of the brake pedal.

마스터실린더 중 플런저타입 마스터실린더(Plunger typed Master Cylinder)는, 브레이크 페달의 답력을 배력하는 부스터(Booster)로부터 힘을 전달받는 입력피스톤(primary piston)과, 실린더 내에 구비되어 입력 피스톤(primary piston)에 전달된 힘에 의해 작동하는 유동피스톤(Floating Piston)을 포함한다.The plunger typed master cylinder among the master cylinders includes a primary piston which receives a force from a booster that boosts the brake pedal effort, and is provided in the cylinder to a primary piston. It includes a floating piston that is actuated by the transmitted force.

이와 같은 플런저타입 마스터실린더는 액압 발생을 위해 통상 씰컵(Seal Cup)이 구비된다.Such a plunger type master cylinder is usually provided with a seal cup for generating hydraulic pressure.

씰컵의 내경은 입력피스톤과 유동피스톤에 각각 접촉되고 그 외경은 액압챔버의 내면에 접촉되므로, 브레이크의 비작동시나 브레이크의 해제시는 오일의 통로 역할을 하며, 브레이크 작동시는 오일의 흐름을 차단하는 역할을 한다.Since the inner diameter of the seal cup is in contact with the input piston and the floating piston, and the outer diameter is in contact with the inner surface of the hydraulic chamber, it acts as a passage for oil when the brake is inactive or when the brake is released, and blocks the flow of oil during brake operation. It plays a role.

상기한 기술구성은 본 발명의 이해를 돕기 위한 배경기술로서, 본 발명이 속하는 기술분야에서 널리 알려진 종래기술을 의미하는 것은 아니다.
The above technical configuration is a background art for helping understanding of the present invention, and does not mean a conventional technology well known in the art.

씰컵의 형상이 "C"자 형상으로 형성되므로, 브레이크패달의 해제에 따른 피스톤의 후진 동작에서, 피스톤에서 씰컵을 통하여 레저버로 이동되는 브레이크오일의 역압 발생방향과 역압에 의한 씰컵의 변형 방향이 동일하게 된다. 따라서, 씰컵의 변형에 의한 브레이크오일의 유동 저항이 증가하며, 이로 인한 잔압으로 안전사고의 위험성도 증가한다. 따라서, 이를 개선할 필요성이 요청된다.Since the shape of the seal cup is formed in the shape of "C", in the reverse operation of the piston according to the release of the brake pedal, the reverse pressure generation direction of the brake oil moved from the piston to the reservoir through the seal cup and the deformation direction of the seal cup due to the reverse pressure are Will be the same. Therefore, the flow resistance of the brake oil due to the deformation of the seal cup increases, thereby increasing the risk of safety accident due to the residual pressure. Therefore, there is a need for improvement.

본 발명은 상기와 같은 필요성에 의해 창출된 것으로서, 브레이크패달의 해제에 따른 역압 발생시, 브레이크오일의 유동 저항을 감소시키는 방향으로 씰컵의 변형이 이루어질 수 있는 브레이크용 플런저 마스터실린더를 제공하는 데 그 목적이 있다.
The present invention has been made by the necessity as described above, the object of the present invention is to provide a plunger master cylinder for brakes in which the deformation of the seal cup can be made in the direction of reducing the flow resistance of the brake oil when the back pressure occurs due to the release of the brake pedal. There is this.

본 발명에 따른 브레이크용 플런저 마스터실린더는: 공급포트를 통하여 브레이크오일을 공급받는 압력챔버가 구비되는 실린더바디와, 실린더바디의 내측에 스프링으로 탄성 지지되며 부스트의 작동으로 이동되어 압력챔버의 압력을 변화시키는 피스톤부 및 피스톤부의 릴리프포트와 공급포트 사이에 구비된 액압챔버에 접하여 설치되는 환형의 외경부재와 외경부재에서 내측으로 절곡된 연결부재에 연결되어 피스톤부에 접하는 내경부재를 구비하며 내경부재에서 외경부재 방향으로 돌출 형성되는 리브부재를 구비하는 씰컵을 포함한다.The plunger master cylinder for a brake according to the present invention includes: a cylinder body having a pressure chamber supplied with brake oil through a supply port, and elastically supported by a spring inside the cylinder body and moved by the operation of boost to increase the pressure of the pressure chamber. An inner diameter member having an inner diameter member which is in contact with the piston portion connected to the annular outer diameter member installed in contact with the hydraulic chamber provided between the piston portion to be changed and the hydraulic chamber provided between the piston portion and the supply port and bent inwardly from the outer diameter member. Including a seal cup having a rib member protruding in the direction of the outer diameter member.

또한 액압챔버와 접하는 외경부재의 외측은 직선 형상으로 형성되는 것이 바람직하다.In addition, the outer side of the outer diameter member in contact with the hydraulic chamber is preferably formed in a straight shape.

또한 액압챔버의 측면과 접하는 연결부재는 직선 형상으로 형성되는 것이 바람직하다.In addition, the connection member in contact with the side of the hydraulic chamber is preferably formed in a straight shape.

또한 본 발명은, 내경부재에서 리브부재와 연결되는 커넥터부가 상측으로 돌출 형성되는 것이 바람직하다.In addition, in the present invention, it is preferable that the connector portion connected to the rib member protrudes upward from the inner diameter member.

또한 리브부재는, 내경부재의 중앙에서 원주 방향을 따라 돌출 형성되는 것이 바람직하다.In addition, the rib member is preferably formed to protrude along the circumferential direction at the center of the inner diameter member.

또한 리브부재에는 브레이크오일이 이동되는 통로를 형성하는 이동홈부가 원주 방향을 따라 복수로 구비되는 것이 바람직하다.
In addition, the rib member is preferably provided with a plurality of moving grooves forming a passage for moving the brake oil along the circumferential direction.

본 발명에 따른 브레이크용 플런저 마스터실린더는 단면 형상이 "R"자 형상으로 형성되므로, 브레이크패달의 해제에 따른 역압 발생시, 리브부재가 하측을 향하여 가압되고, 리브부재의 하측에 있는 내경부재가 양측으로 벌어져서 브레이크오일의 유동저항이 감소되며, 기기의 동작 신뢰성도 향상될 수 있다.Since the brake plunger master cylinder according to the present invention has a cross-sectional shape having a "R" shape, when a back pressure occurs due to the release of the brake pedal, the rib member is pressed downward, and the inner diameter member under the rib member is both sides. As a result, the flow resistance of the brake oil is reduced, and the operation reliability of the device can be improved.

또한 본 발명은, 씰컵이 액압챔버의 내측에 면접촉되므로, 씰컵이 상하로 이동되는 롤링현상이 방지되어 기기의 동작 안정성을 향상시킬 수 있다.
In addition, in the present invention, since the seal cup is in surface contact with the inside of the hydraulic chamber, the rolling phenomenon in which the seal cup is moved up and down can be prevented, thereby improving the operational stability of the device.

도 1은 본 발명의 일 실시예에 따른 브레이크용 플런저 마스터실린더를 개략적으로 도시한 측단면도이다.
도 2는 본 발명의 일 실시예에 따른 씰컵이 액압챔버에 설치된 상태를 도시한 측단면도이다.
도 3은 도 2에 도시된 씰컵에 브레이크오일의 압력이 분포되는 상태를 도시한 상태도이다.
도 4는 본 발명의 일 실시예에 따른 씰컵을 도시한 사시도이다.1 is a side cross-sectional view schematically showing a brake plunger master cylinder according to an embodiment of the present invention.
Figure 2 is a side cross-sectional view showing a state in which the seal cup is installed in the hydraulic chamber according to an embodiment of the present invention.
3 is a state diagram illustrating a state in which pressure of the brake oil is distributed in the seal cup shown in FIG. 2.
Figure 4 is a perspective view showing a seal cup according to an embodiment of the present invention.

이하, 첨부된 도면들을 참조하여 본 발명에 따른 브레이크용 플런저 마스터실린더의 일 실시예를 설명한다. 설명의 편의를 위해 자동차에 사용되는 브레이크용 플런저 마스터실린더를 예로 들어 설명한다. 이 과정에서 도면에 도시된 선들의 두께나 구성요소의 크기 등은 설명의 명료성과 편의상 과장되게 도시되어 있을 수 있다. 또한, 후술되는 용어들은 본 발명에서의 기능을 고려하여 정의된 용어들로서 이는 사용자, 운용자의 의도 또는 관례에 따라 달라질 수 있다. 그러므로, 이러한 용어들에 대한 정의는 본 명세서 전반에 걸친 내용을 토대로 내려져야 할 것이다.
Hereinafter, with reference to the accompanying drawings will be described an embodiment of a brake plunger master cylinder according to the present invention. For convenience of explanation, a brake plunger master cylinder used in an automobile will be described as an example. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, definitions of these terms should be made based on the contents throughout the specification.

도 1은 본 발명의 일 실시예에 따른 브레이크용 플런저 마스터실린더를 개략적으로 도시한 측단면도이며, 도 2는 본 발명의 일 실시예에 따른 씰컵이 액압챔버에 설치된 상태를 도시한 측단면도이며, 도 3은 도 2에 도시된 씰컵에 브레이크오일의 압력이 분포되는 상태를 도시한 상태도이며, 도 4는 본 발명의 일 실시예에 따른 씰컵을 도시한 사시도이다.1 is a side cross-sectional view schematically showing a plunger master cylinder for a brake according to an embodiment of the present invention, Figure 2 is a side cross-sectional view showing a state in which the seal cup is installed in the hydraulic chamber according to an embodiment of the present invention, 3 is a state diagram illustrating a state in which pressure of the brake oil is distributed in the seal cup shown in FIG. 2, and FIG. 4 is a perspective view illustrating the seal cup according to the exemplary embodiment of the present invention.

도 1과 도 2에 도시된 바와 같이, 본 발명의 일 실시예에 따른 브레이크용 플런저 마스터실린더(1)는, 압력챔버(14)가 구비된 실린더바디(10)의 내측을 피스톤부(20)가 왕복 이동되며, 피스톤부(20)에 접하여 탄성 재질의 씰컵(30)이 설치된다.As shown in FIG. 1 and FIG. 2, the brake plunger master cylinder 1 according to the exemplary embodiment of the present invention has a piston part 20 formed inside the cylinder body 10 having the pressure chamber 14. Is reciprocated and the seal cup 30 of elastic material is installed in contact with the piston 20.

실린더바디(10)는, 브레이크오일(16)이 저장되는 리저버(도시생략)와 공급포트(12)로 연결된다.The cylinder body 10 is connected to a reservoir (not shown) and a supply port 12 in which the brake oil 16 is stored.

공급포트(12)를 통하여 브레이크오일(16)을 공급받는 압력챔버(14)가 실린더바디(10)의 내측에 구비된다.The pressure chamber 14, which receives the brake oil 16 through the supply port 12, is provided inside the cylinder body 10.

실린더바디(10)의 내측에 스프링(28)으로 탄성 지지되는 피스톤부(20)는, 부스트(도시생략)의 작동으로 이동되어 압력챔버(14)의 압력을 변화시키는 기술사상 안에서 다양한 형상으로 형성될 수 있다.The piston portion 20 elastically supported by the spring 28 inside the cylinder body 10 is formed in various shapes within the technical concept of being moved by the operation of boost (not shown) to change the pressure of the pressure chamber 14. Can be.

일 실시예에 따른 피스톤부(20)는, 부스트와 연결되는 입력피스톤(22) 및 입력피스톤(22)의 동작으로 이동되는 유동피스톤(24)을 포함한다.The piston unit 20 according to an embodiment includes an input piston 22 connected to the boost and a floating piston 24 moved by the operation of the input piston 22.

입력피스톤(22)과 유동피스톤(24)에는 브레이크오일(16)이 이동되는 통로인 릴리프포트(26)가 구비된다.The input piston 22 and the floating piston 24 are provided with a relief port 26 which is a passage through which the brake oil 16 moves.

이러한 피스톤부(20)는 부스트의 동작으로 이동되며, 부스트의 압력이 제거된 이후에는 스프링(28)의 동작에 의해 초기 위치로 복귀한다.The piston 20 is moved in the operation of the boost, and after the pressure of the boost is removed, returns to the initial position by the operation of the spring 28.

피스톤부(20)의 릴리프포트(26)와 실린더바디(10)의 공급포트(12) 사이에는 씰컵(30)의 장착을 위한 액압챔버(40)가 구비된다.A hydraulic chamber 40 for mounting the seal cup 30 is provided between the relief port 26 of the piston 20 and the supply port 12 of the cylinder body 10.

액압챔버(40)는 피스톤부(20)의 외주면을 따라 환형 형상으로 형성된 홈부이며, 씰컵(30)의 외경부재(31)와 접하는 지지면(42) 및 연결부재(32)와 접하는 측면(44)을 구비한다.The hydraulic chamber 40 is a groove portion formed in an annular shape along the outer circumferential surface of the piston 20, and the side surface 44 in contact with the support surface 42 and the connection member 32 contacting the outer diameter member 31 of the seal cup 30. ).

씰컵(30)은 고무 또는 실리콘 등 탄성 재질로 성형되며, 브레이크오일(16)의 역압 발생시, 브레이크오일(16)의 유동저항을 감소시키는 방향으로 씰컵(30)의 형상이 변형되는 기술사상 안에서 다양한 형상으로 변형될 수도 있다.The seal cup 30 is formed of an elastic material such as rubber or silicone, and in the technical concept that the shape of the seal cup 30 is deformed in a direction of decreasing the flow resistance of the brake oil 16 when the back pressure of the brake oil 16 is generated. It may be deformed into a shape.

도 2와 도 4에 도시된 바와 같이, 일 실시예에 따른 씰컵(30)은, 액압챔버(40)의 지지면(42)에 접하여 설치되는 환형의 외경부재(31)와, 외경부재(31)에서 내측으로 절곡되는 연결부재(32)에 연결되어 피스톤부(20)에 접하는 내경부재(33) 및 내경부재(33)에서 외경부재(31) 방향으로 돌출 형성되는 리브부재(34)를 포함한다.As shown in FIG. 2 and FIG. 4, the seal cup 30 according to an embodiment includes an annular outer diameter member 31 and an outer diameter member 31 installed in contact with the support surface 42 of the hydraulic chamber 40. The inner diameter member 33 and the rib member 34 protruding from the inner diameter member 33 in the direction of the outer diameter member 31 are connected to the connecting member 32 bent inwardly in the do.

액압챔버(40)의 지지면(42)과 접하는 외경부재(31)의 외측(도 2기준 상측)은 직선 형상으로 형성되므로, 피스톤부(20)의 릴리프포트(26)에서 실린더바디(10)의 공급포트(12)로 브레이크오일(16)이 이동되는 역압 발생시, 외경부재(31)는 액압챔버(40)의 지지면(42)에 접하여 씰컵(30)의 상하 이동을 방지한다.Since the outer side of the outer diameter member 31 in contact with the support surface 42 of the hydraulic chamber 40 (upper reference side in Fig. 2) is formed in a straight shape, the cylinder body 10 at the relief port 26 of the piston portion 20 is formed. When a reverse pressure occurs in which the brake oil 16 is moved to the supply port 12 of the outer diameter member 31, the outer diameter member 31 contacts the support surface 42 of the hydraulic chamber 40 to prevent vertical movement of the seal cup 30.

씰컵(30)의 상하 이동의 구속되어 롤링현상이 방지되므로, 브레이크용 플런저 마스터실린더(1)의 동작이 보다 안정적으로 이루어진다.Since the rolling phenomenon is prevented by the up and down movement of the seal cup 30, the operation of the brake plunger master cylinder 1 is made more stable.

액압챔버(40)의 측면(44)과 접하는 연결부재(32)도 양측에 라운드 처리된 부분을 제외하고는 직선 형상으로 형성되므로, 브레이크오일(16)의 역압 발생시, 연결부재(32)도 액압챔버(40)의 측면(44)에 접하여 씰컵(30)의 유동을 방지한다.Since the connecting member 32 which is in contact with the side surface 44 of the hydraulic chamber 40 is also formed in a straight shape except for the rounded portions on both sides, when the reverse pressure of the brake oil 16 is generated, the connecting member 32 is also hydraulically pressured. In contact with the side surface 44 of the chamber 40 to prevent the flow of the seal cup (30).

씰컵(30)의 외경부재(31)와 연결부재(32) 및 내경부재(33)는 "ㄷ"자 형상으로 형성될 수 있으며, 내경부재(33)에서 리브부재(34)와 연결되는 커넥터부(36)가 상측(이하 도 2기준)으로 돌출 형성될 수 있다.The outer diameter member 31, the connection member 32 and the inner diameter member 33 of the seal cup 30 may be formed in a "c" shape, the connector portion connected to the rib member 34 in the inner diameter member 33 36 may protrude upward (based on FIG. 2 below).

내경부재(33)에서 외경부재(31)를 향한 방향으로 리브부재(34)가 돌출 형성되며, 이러한 리브부재(34)는 내경부재(33)의 중앙에서 원주 방향을 따라 돌출 형성된다.The rib member 34 protrudes from the inner diameter member 33 toward the outer diameter member 31, and the rib member 34 protrudes along the circumferential direction from the center of the inner diameter member 33.

내경부재(33)의 하측에서 리브부재(34)의 상측까지의 길이의 최대값은, 내경부재(33)의 하측에서 외경부재(31)의 상측까지 길이의 절반으로 설정된다.The maximum value of the length from the lower side of the inner diameter member 33 to the upper side of the rib member 34 is set to half of the length from the lower side of the inner diameter member 33 to the upper side of the outer diameter member 31.

이러한 형상의 씰컵에 브레이크오일(16)의 역압이 발생하면, 리브부재(34)는 하측으로 가압되며, 리브부재(34)와 연결되는 내경부재(33)는 양측으로 벌어진다.When the reverse pressure of the brake oil 16 is generated in the seal cup of this shape, the rib member 34 is pressed downward, and the inner diameter member 33 connected to the rib member 34 is opened to both sides.

이러한 씰컵(30)의 형상은 "R"자 형상으로 형성되므로, 피스톤부(20)의 릴리프포트(26)에서 실린더바디(10)의 공급포트(12)로 이동되는 브레이크오일(16)의 이동이 원활하게 이루어진다.Since the shape of the seal cup 30 is formed in an “R” shape, the brake oil 16 moves from the relief port 26 of the piston part 20 to the supply port 12 of the cylinder body 10. This is done smoothly.

리브부재(34)에는 브레이크오일(16)이 이동이 원활하게 이루어지도록 설정된 간격으로 절개된 홈 형상의 이동홈부(35)가 구비된다. 이동홈부(35)는 리브부재(34)의 원주 방향을 따라 복수로 구비되며, 사각형상을 포함한 다양한 형상으로 브레이크오일(16)의 이동을 위한 홈부를 형성한다.The rib member 34 is provided with a groove-shaped moving groove 35 in which the brake oil 16 is cut at set intervals so as to smoothly move. The moving groove 35 is provided in plural along the circumferential direction of the rib member 34 and forms a groove for moving the brake oil 16 in various shapes including a quadrangular shape.

이하에서는 첨부된 도면들을 참조하여 본 발명의 일 실시예에 따른 브레이크용 플런저 마스터실린더(1)의 작동상태를 상세히 설명한다.Hereinafter, with reference to the accompanying drawings will be described in detail the operating state of the brake plunger master cylinder 1 according to an embodiment of the present invention.

브레이크패달이 해제되면, 부스트와 연결되는 입력피스톤(22)에 가해지는 압력도 해제된다.When the brake pedal is released, the pressure applied to the input piston 22 connected to the boost is also released.

입력피스톤(22)과 유동피스톤(24)을 포함하는 피스톤부(20)는 스프링(28)의 탄성력으로 초기 위치로 이동된다.The piston 20 including the input piston 22 and the floating piston 24 is moved to the initial position by the elastic force of the spring 28.

피스톤부(20)의 릴리프포트(26)를 통하여 씰컵(30)을 거쳐 실린더바디(10)의 공급포트(12)로 이동되는 브레이크오일(16)로 인한 역압이 발생한다.The back pressure due to the brake oil 16 which is moved to the supply port 12 of the cylinder body 10 through the seal cup 30 through the relief port 26 of the piston 20 is generated.

도 3에 도시된 바와 같이, 씰컵(30)에 역압이 가해지면 리브부재(34)는 하측 방향으로 가압된다.As shown in FIG. 3, when a back pressure is applied to the seal cup 30, the rib member 34 is pressed downward.

리브부재(34)와 연결된 커넥터부(36)로 전달된 압력은 내경부재(33)의 양측으로 전달되며, 커넥터부(36)를 중심으로 내경부재(33)의 일측(도 3기준 좌측)과 타측(도 3기준 우측)은 양측으로 더 벌어지는 형상으로 변형된다.Pressure transmitted to the connector portion 36 connected to the rib member 34 is transmitted to both sides of the inner diameter member 33, and one side of the inner diameter member 33 with respect to the connector portion 36 (left of FIG. 3). The other side (right side of FIG. 3) is deformed into a shape that further spreads to both sides.

이러한 내경부재(33)의 형상 변형으로 씰컵(30)의 내경부재(33)가 피스톤부(20)에 안착되는 면적이 넓어지므로, 피스톤부(20)의 안정적인 습동이 이루어지며, 씰컵(30)의 내구성도 향상된다.Due to the shape deformation of the inner diameter member 33, the area in which the inner diameter member 33 of the seal cup 30 is seated on the piston portion 20 is widened, so that stable sliding of the piston portion 20 is achieved, and the seal cup 30 is formed. Its durability is also improved.

또한 내경부재(33)와 피스톤부(20)의 사이로 이동되는 브레이크오일(16)의 유동저항이 감소되어 브레이크용 플런저 마스터실린더(1)의 잔압 발생이 방지된다.In addition, the flow resistance of the brake oil 16 that is moved between the inner diameter member 33 and the piston 20 is reduced to prevent the residual pressure of the brake plunger master cylinder (1).

그리고, 역압 발생시 씰컵(30)의 외경부재(31)는 액압챔버(40)의 지지면(42)에 접하고, 연결부재(32)는 액압챔버(40)의 측면(44)에 접하므로, 씰컵(30)의 흔들림이 감소하여 롤링현상이 방지된다.In addition, when the back pressure is generated, the outer diameter member 31 of the seal cup 30 contacts the support surface 42 of the hydraulic chamber 40, and the connection member 32 contacts the side surface 44 of the hydraulic chamber 40. The shaking of the 30 is reduced and the rolling phenomenon is prevented.

상술한 바와 같은 구성에 의하면, 일 실시예에 따른 브레이크용 플런저 마스터실린더(1)는 단면 형상이 "R"자 형상으로 형성되므로, 브레이크패달의 해제에 따른 역압 발생시, 리브부재(34)가 하측을 향하여 가압되고, 리브부재(34)의 하측에 있는 내경부재(33)가 양측으로 벌어져서 브레이크오일(16)의 유동저항이 감소되어 기기의 동작 신뢰성을 향상시킬 수 있다.According to the configuration as described above, the brake plunger master cylinder 1 according to the embodiment is formed in the cross-sectional shape of the "R" shape, the rib member 34 at the lower side when the back pressure occurs due to the release of the brake pedal Pressurized toward the side, and the inner diameter member 33 below the rib member 34 spreads to both sides, thereby reducing the flow resistance of the brake oil 16, thereby improving the operation reliability of the device.

또한 씰컵(30)이 액압챔버(40)의 내측에 면접촉되므로, 씰컵(30)이 상하로 이동되는 롤링현상이 방지되어 기기의 동작 안정성을 향상시킬 수 있다.In addition, since the seal cup 30 is in surface contact with the inside of the hydraulic chamber 40, rolling phenomenon in which the seal cup 30 is moved up and down can be prevented, thereby improving the operational stability of the device.

본 발명은 도면에 도시된 실시예를 참고로 하여 설명되었으나, 이는 예시적인 것에 불과하며, 당해 기술이 속하는 분야에서 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 타 실시예가 가능하다는 점을 이해할 것이다.Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art to which the art belongs can make various modifications and other equivalent embodiments therefrom. I will understand.

또한, 자동차에 사용되는 브레이크용 플런저 마스터실린더를 예로 들어 설명하였으나, 이는 예시적인 것에 불과하며, 브레이크가 사용되는 다른 종류의 기계장치에도 본 발명에 의한 브레이크용 플런저 마스터실린더가 사용될 수 있다.In addition, the brake plunger master cylinder used in automobiles has been described as an example, but this is merely exemplary, and the brake plunger master cylinder according to the present invention may be used in other kinds of mechanical devices in which brakes are used.

따라서, 본 발명의 진정한 기술적 보호범위는 특허청구범위에 의해서 정하여져야 할 것이다.
Therefore, the true technical protection scope of the present invention will be defined by the claims.

1: 브레이크용 플런저 마스터실린더
10: 실린더바디 12: 공급포트
14: 압력챔버 16: 브레이크오일
20: 피스톤부 22: 입력피스톤
24: 유동피스톤 26: 릴리프포트
28: 스프링 30: 씰컵
31: 외경부재 32: 연결부재
33: 내경부재 34: 리브부재
35: 이동홈부 36: 커넥터부
40: 액압챔버 42: 지지면
44: 측면1: Plunger master cylinder for brake
10: cylinder body 12: supply port
14: pressure chamber 16: brake oil
20: piston 22: input piston
24: floating piston 26: relief pot
28: spring 30: seal cup
31: outer diameter member 32: connecting member
33: inner diameter member 34: rib member
35: moving groove 36: connector
40: hydraulic chamber 42: support surface
44: side

Claims (6)

공급포트를 통하여 브레이크오일을 공급받는 압력챔버가 구비되는 실린더바디;
상기 실린더바디의 내측에 스프링으로 탄성 지지되며, 부스트의 작동으로 이동되어 상기 압력챔버의 압력을 변화시키는 피스톤부; 및
상기 피스톤부의 릴리프포트와 상기 공급포트 사이에 구비된 액압챔버에 접하여 설치되는 환형의 외경부재와, 상기 외경부재에서 내측으로 절곡된 연결부재에 연결되어 상기 피스톤부에 접하는 내경부재를 구비하며, 상기 내경부재에서 상기 외경부재 방향으로 돌출 형성되는 리브부재를 구비하는 씰컵;을 포함하는 것을 특징으로 하는 브레이크용 플런저 마스터실린더.
A cylinder body having a pressure chamber for receiving brake oil through a supply port;
A piston portion elastically supported by a spring inside the cylinder body and moved in operation of a boost to change a pressure of the pressure chamber; And
An annular outer diameter member installed in contact with a hydraulic chamber provided between the relief port and the supply port of the piston part, and an inner diameter member connected to the connection member bent inwardly from the outer diameter member to contact the piston part; And a seal cup including a rib member protruding from the inner diameter member toward the outer diameter member.
제 1 항에 있어서,
상기 액압챔버와 접하는 상기 외경부재의 외측은 직선 형상으로 형성되는 것을 특징으로 하는 브레이크용 플런저 마스터실린더.
The method of claim 1,
The outer side of the outer diameter member in contact with the hydraulic chamber is formed in a linear shape for the brake plunger master cylinder.
제 2 항에 있어서,
상기 액압챔버의 측면과 접하는 상기 연결부재는 직선 형상으로 형성되는 것을 특징으로 하는 브레이크용 플런저 마스터실린더.
The method of claim 2,
The connecting member in contact with the side surface of the hydraulic chamber is a brake plunger master cylinder, characterized in that formed in a straight shape.
제 1 항에 있어서,
상기 내경부재에서 상기 리브부재와 연결되는 커넥터부가 상측으로 돌출 형성되는 것을 특징으로 하는 브레이크용 플런저 마스터실린더.
The method of claim 1,
A connector plunger master cylinder for the brake, characterized in that the connector portion connected to the rib member from the inner diameter member protrudes upward.
제 4 항에 있어서,
상기 리브부재는, 상기 내경부재의 중앙에서 원주 방향을 따라 돌출 형성되는 것을 특징으로 하는 브레이크용 플런저 마스터실린더.
The method of claim 4, wherein
The rib member is a plunger master cylinder for a brake, characterized in that protruding in the circumferential direction in the center of the inner diameter member.
제 1 항 내지 제 5 항 중 어느 한 항에 있어서,
상기 리브부재에는 브레이크오일이 이동되는 통로를 형성하는 이동홈부가 원주 방향을 따라 복수로 구비되는 것을 특징으로 하는 브레이크용 플런저 마스터실린더.6. The method according to any one of claims 1 to 5,
The rib member has a plurality of moving grooves forming a passage for moving the brake oil in a circumferential direction, the rib plunger master cylinder.
KR1020100064074A 2010-07-02 2010-07-02 Plunger type master cylinder for brake KR101638846B1 (en)

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Cited By (3)

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Publication number Priority date Publication date Assignee Title
US10773699B2 (en) 2018-01-08 2020-09-15 Hyundai Mobis Co., Ltd. Cylinder apparatus for brake
KR102253735B1 (en) * 2020-06-08 2021-05-21 우리피앤피(주) Flange for coupling pipe
US11608042B2 (en) 2020-05-12 2023-03-21 Hyundai Mobis Co., Ltd. Master cylinder for brake

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KR20100023672A (en) * 2008-08-22 2010-03-04 주식회사 만도 Sealing member for master cylinder and master cylinder having the same
JP2010121645A (en) * 2008-11-17 2010-06-03 Ntn Corp Bearing seal for wheel, and bearing device for wheel equipped with the same

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JP3035228B2 (en) * 1996-08-22 2000-04-24 ボッシュ ブレーキ システム株式会社 Plunger type master cylinder

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JPH0335228B2 (en) * 1984-07-30 1991-05-27 Mitsubishi Electric Corp
JPH05238369A (en) * 1992-02-26 1993-09-17 Uchiyama Mfg Corp Bearing seal having rotation detecting device
KR20100023672A (en) * 2008-08-22 2010-03-04 주식회사 만도 Sealing member for master cylinder and master cylinder having the same
JP2010121645A (en) * 2008-11-17 2010-06-03 Ntn Corp Bearing seal for wheel, and bearing device for wheel equipped with the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10773699B2 (en) 2018-01-08 2020-09-15 Hyundai Mobis Co., Ltd. Cylinder apparatus for brake
US11608042B2 (en) 2020-05-12 2023-03-21 Hyundai Mobis Co., Ltd. Master cylinder for brake
KR102253735B1 (en) * 2020-06-08 2021-05-21 우리피앤피(주) Flange for coupling pipe

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