KR20080043901A - Shutoff valve for preventing fuel leak valve in vehicle - Google Patents

Shutoff valve for preventing fuel leak valve in vehicle Download PDF

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Publication number
KR20080043901A
KR20080043901A KR1020060112542A KR20060112542A KR20080043901A KR 20080043901 A KR20080043901 A KR 20080043901A KR 1020060112542 A KR1020060112542 A KR 1020060112542A KR 20060112542 A KR20060112542 A KR 20060112542A KR 20080043901 A KR20080043901 A KR 20080043901A
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South Korea
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valve
fuel
vehicle
valve body
seal
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KR1020060112542A
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Korean (ko)
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KR100837930B1 (en
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성연관
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현대자동차주식회사
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/04—Tank inlets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/04—Tank inlets
    • B60K2015/0458—Details of the tank inlet

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

A shutoff valve for preventing fuel from leaking in a vehicle is provided to inject fuel smoothly by minimizing the resistance pressure against fuel injection and to improve tightness by using a rubber seal in order to prevent fuel leakage. A shutoff valve includes a valve housing(10), a valve(11), a spring(13), and a seal(14). The valve housing has a step with a curved surface. The vale includes a valve body(11a) integrally formed with a valve stem(11b). The valve body has a funnel shape. The spring surrounds the valve stem to support the valve elastically. The seal is mounted on the outer peripheral surface of the valve body. The seal has a curved surface to stick to the step.

Description

차량의 연료누유방지용 차단밸브{Shutoff valve for preventing fuel leak valve in vehicle}Shutoff valve for preventing fuel leak valve in vehicle}

도 1은 종래 기술에 따른 연료누유방지용 차단밸브의 설치 상태도,1 is an installation state of the fuel leakage preventing valve according to the prior art,

도 2는 종래 기술에 따른 연료누유방지용 차단밸브의 단면도,Figure 2 is a cross-sectional view of the fuel leakage preventing valve according to the prior art,

도 3은 본 발명에 따른 연료누유방지용 차단밸브의 사시도,3 is a perspective view of a fuel leakage preventing valve according to the present invention;

도 4는 본 발명에 따른 연료누유방지용 차단밸브의 단면도이다.4 is a cross-sectional view of a fuel leakage prevention cutoff valve according to the present invention.

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

10-밸브하우징 11-밸브10-valve housing 11-valve

12-베이스 플레이트 13-스프링12-base plate 13-spring

14-고무 씨일14-rubber seal

본 발명은 차량의 연료누유방지용 차단밸브에 관한 것으로, 특히 차량의 전복사고 발생시에 연료탱크로부터의 누유를 확실하게 방지하도록 한 차량의 연료누유방지용 차단밸브에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a shutoff valve for preventing fuel leakage of a vehicle, and more particularly to a shutoff valve for preventing fuel leakage of a vehicle, which reliably prevents leakage from a fuel tank in the event of a vehicle overturn.

종래 차량의 연료시스템은 도 1에 도시한 바와 같이, 소정 용량의 연료를 저 장할 수 있는 차체에 장착되는 연료탱크(1)에 연료주입파이프(2)의 일단이 연통되게 연결되고, 상기 연료주입파이프(2)의 타단은 차체의 외측 패널까지 연장되게 형성되어 고정되게 장착된다.In the conventional fuel system of the vehicle, as shown in FIG. 1, one end of the fuel injection pipe 2 is connected in communication with a fuel tank 1 mounted on a vehicle body capable of storing fuel having a predetermined capacity. The other end of the pipe 2 is formed to extend to the outer panel of the vehicle body and is fixedly mounted.

상기 연료주입파이프(2)의 길이방향을 따라서 상기 연료탱크(1)와의 연결부에는 차단밸브(3)가 설치되고, 상기 차단밸브(3)는 연료의 주입시에 연료의 되튀김에 의한 화재와 같은 안전사고를 예방하고, 연료가스의 역류로 인한 누출을 방지하는 기능을 한다.A shutoff valve 3 is installed at the connection portion with the fuel tank 1 along the longitudinal direction of the fuel injection pipe 2, and the shutoff valve 3 is provided with a fire caused by the reflow of fuel when the fuel is injected. It prevents the same safety accident and prevents leakage due to backflow of fuel gas.

그리고 상기 차단밸브는 차량의 전복사고 발생시에 연료탱크 내부에 저장된 연료가 차량의 외부로 누유되는 것을 방지하는 기능도 하고 있다.The shutoff valve also serves to prevent leakage of fuel stored inside the fuel tank to the outside of the vehicle when a vehicle rollover occurs.

상기와 같은 차단밸브는 도 2에 도시한 바와 같이 연료주입파이프(2)의 하단에 설치되는 파이프 형상의 밸브바디(3a)와, 이 밸브바디의 내부에 설치되면서 우산형상을 가진 플라스틱 소재로 제작되어 스프링을 매개로 탄력적으로 지지된 밸브(3b)를 갖춘 구조로 되어, 상기 연료주입파이프를 통해 연료가 주입될 때에 연료주입압력이 상기 밸브바디를 지지하고 있는 스프링의 탄성력보다 크게 되면 밸브바디가 연료주입파이프를 개방하여 연료가 연료탱크의 내부로 주입되게 되고, 연료탱크 내부의 연료가 역류할 경우에는 상기 밸브바디가 연료주입파이프의 내주면에 밀착되어서 연료의 역류를 방지하게 된다.The shut-off valve as described above is made of a pipe-shaped valve body 3a installed at the lower end of the fuel injection pipe 2 and the plastic body having an umbrella shape while being installed inside the valve body as shown in FIG. And a valve 3b elastically supported via a spring, and when the fuel injection pressure is greater than the elastic force of the spring supporting the valve body when the fuel is injected through the fuel injection pipe, the valve body By opening the fuel injection pipe, fuel is injected into the fuel tank, and when the fuel in the fuel tank flows back, the valve body is in close contact with the inner circumferential surface of the fuel injection pipe to prevent the backflow of the fuel.

그런데 상기와 같은 종래의 우산밸브 형상의 차단밸브를 가진 종래의 구조에서는 차량의 전복사고 발생시에 상기 차단밸브가 연료탱크로부터의 연료의 누유를 확실하게 방지하기가 미흡하다고 하는 결점이 있었다.However, in the conventional structure having the conventional umbrella valve-shaped shut-off valve as described above, there is a drawback that the shut-off valve does not reliably prevent leakage of fuel from the fuel tank when a vehicle rollover accident occurs.

상기와 같은 결점을 해소하기 위해 종래의 다른 차단밸브는 밸브바디의 외주면에 고무 씨일을 장착한 경우도 있는 데, 상기 고무 씨일로 인해 연료누유방지 기능을 향상되는 반면에 연료주입시에 연료주입저항이 커져서 연료주입이 원활하게 이루어지지 않는 결점이 있었고, 또한 도어 타입의 차단밸브도 제안되어 있지만 이 차단밸브 역시 연료의 확실한 누유를 방지하기에는 부족하다고 하는 결점이 있었다.In order to alleviate the above drawbacks, other conventional shut-off valves may have a rubber seal mounted on the outer circumferential surface of the valve body. The rubber seal improves fuel leakage prevention function while fuel injection resistance is improved. As a result, there has been a drawback that fuel injection is not performed smoothly, and a door-type shutoff valve has been proposed, but this shutoff valve also has a drawback that it is insufficient to prevent the leak of fuel.

이에 본 발명은 상기한 사정을 감안하여 안출된 것으로, 연료주입시에는 연료의 주입저항력이 작아서 원료를 원활하게 주입할 수 있고, 차량의 전복사고 발생시에는 연료탱크로부터의 연료의 누유를 확실하게 방지할 수 있도록 한 차량의 연료누유방지용 차단밸브를 제공함에 그 목적이 있다.Accordingly, the present invention has been made in view of the above circumstances, and the fuel injection resistance is small at the time of fuel injection, so that the raw material can be injected smoothly, and the leakage of fuel from the fuel tank can be reliably prevented in the event of a vehicle rollover. It is an object of the present invention to provide a shutoff valve for preventing fuel leakage of a vehicle.

상기와 같은 목적을 달성하기 위한 본 발명은, 소경부와 대경부를 일체로 연결하는 곡면형상의 단턱을 가진 밸브하우징과, 깔때기기 형상의 밸브바디에 밸브스템이 일체로 형성된 밸브, 상기 밸브스템에 끼워져서 상기 밸브를 탄력적으로 지지하는 스프링, 상기 밸브바디의 외주면에 장착되어 상기 단턱과 밀착하도록 곡면을 구비한 고무 씨일을 갖춘 구조로 되어 있다.The present invention for achieving the above object, the valve housing having a curved stepped to integrally connect the small diameter portion and the large diameter portion, the valve stem is integrally formed in the valve body of the funnel shape, the valve stem A spring is inserted and elastically supports the valve, and is mounted on an outer circumferential surface of the valve body so as to have a rubber seal having a curved surface in close contact with the step.

바람직하기로는 상기 밸브가 상기 대경부와 밀착하도록 원주 방향으로 소정 간격을 두고 돌출되게 형성된 다수개의 밸브플랜지를 구비한 것을 특징으로 한다.Preferably, the valve is provided with a plurality of valve flanges formed to protrude at a predetermined interval in the circumferential direction so as to contact the large diameter portion.

그리고 상기 고무 씨일이 상기 단턱에 밀착하는 플랜지를 구비한 것을 특징으로 한다.And the flange is in close contact with the stepped rubber seal.

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

도 3에는 본 발명에 따른 연료누유방지용 차단밸브의 구성이 사시도로 도시되어 있는 바, 즉 파이프 형상을 이루는 밸브하우징(10)의 하단에는 우산 형상을 이루는 밸브(11)가 상기 밸브바디(10)를 개폐할 수 있도록 상하로 이동가능하게 설치되고, 상기 밸브(11)에는 원형을 이루는 베이스 플레이트(12)가 연결되며, 상기 밸브의 외주에는 스프링(13)이 끼워져서 밸브바디를 폐쇄하도록 밸브(11)를 상방향으로 탄력적으로 지지하게 되어 있다.3 is a perspective view showing a configuration of a fuel leakage preventing cutoff valve according to the present invention, that is, a valve 11 having an umbrella shape at the bottom of the valve housing 10 having a pipe shape is the valve body 10. It is installed to be movable up and down to open and close the valve 11, the base plate 12 is formed in a circular shape is connected, the outer periphery of the valve is fitted with a spring 13 to close the valve body ( 11) elastically upward.

상기 밸브(11)는 깔때기 형상의 밸브바디(11a)와, 이 밸브바디(11a)를 끼워서 지지하는 밸브스템(11b)을 각각 구비하고 있고, 상기 밸브바디(11a)의 외주면에는 원주방향으로 소정 간격을 두고 다수개의 원호형상의 밸브플랜지(11c)가 돌출되게 형성되어, 상기 밸브플랜지(11c)의 사이부분이 연료가 역류할 때에 연료를 유도하는 연료유도통로(11d)를 형성하게 된다.The valve 11 has a funnel-shaped valve body 11a and a valve stem 11b for sandwiching and supporting the valve body 11a. The valve body 11a has a predetermined circumferential direction on its outer circumferential surface. At intervals, a plurality of arc-shaped valve flanges 11c are formed to protrude, so that a portion between the valve flanges 11c forms a fuel guide passage 11d for guiding fuel when the fuel flows back.

상기 밸브하우징(10)은 도 4에서 단면으로 도시한 바와 같이 소경부(10a)와 대경부(10b)가 단턱(10c)을 매개로 일체로 연결되고, 상기 밸브플랜지(11b)는 상기 대경부(10b)의 내주면에 밀착하는 직경을 가지고 있다.The valve housing 10 has a small diameter portion 10a and a large diameter portion 10b integrally connected to each other via a step 10c as shown in cross section in FIG. 4, and the valve flange 11b is formed on the large diameter portion. It has a diameter in close contact with the inner circumferential surface of 10b.

상기 밸브바디(11a)의 소정 외주면에는 원주방향으로 조립홈이 형성되면서 상기 조립홈에 고무 재질의 씨일(14)이 끼워져 결합되어 있는 데, 상기 씨일(14)은 상기 단턱(10c)과 밀착되게 된다.A predetermined outer circumferential surface of the valve body 11a is formed with a rubber seal 14 fitted in the assembly groove while the assembly groove is formed in the circumferential direction, and the seal 14 is in close contact with the step 10c. do.

상기 씨일(14)에는 외측으로 연장되어 상기 단턱에 밀착해서 기밀을 유지하 는 플랜지(14a)를 구비하고 있고, 상기 단턱(10c)은 곡면을 이루도록 형성됨과 더불어 상기 단턱과 밀착하는 씨일(14)의 외주면도 곡면을 이루게 된다.The seal 14 is provided with a flange 14a extending outward to closely contact the stepped jaw to maintain airtightness, and the stepped jaw 10c is formed to have a curved surface, and the seal 14 comes into close contact with the stepped jaw. The outer circumference is also curved.

이에 따라 연료주입파이프를 통해 연료가 주입될 경우에 연료의 주입압력이 상기 밸브를 지지하고 있는 스프링의 압력보다 크게 되면, 상기 밸브가 하방으로 밀리면서 고무 씨일이 단턱으로부터 떨어져서 밸브하우징을 개방하므로, 연료주입파이프를 통해 유입되는 연료가 연료탱크의 내부에 저장되게 된다. 상기와 같이 연료를 주입하는 과정에 상기 고무 씨일(14)은 어떠한 연료유입저항력을 발생시키지 않으므로, 연료가 원활하게 주입될 수 있게 된다.Accordingly, when fuel is injected through the fuel injection pipe, if the injection pressure of the fuel is greater than the pressure of the spring supporting the valve, the valve is pushed downward while the rubber seal is opened from the step, thereby opening the valve housing. Fuel flowing through the fuel injection pipe is stored in the fuel tank. Since the rubber seal 14 does not generate any fuel inflow resistance in the process of injecting fuel as described above, the fuel can be smoothly injected.

그런데 차량의 전복사고가 발생하여 연료탱크내의 저장된 연료가 밸브를 통해 연료주입파이프로 역류하고자 할 경우에, 먼저 상기 밸브플랜지(11c) 사이에 형성된 연료유도통로(11d)를 통해 연료가 상기 고무 씨일(14) 쪽으로 유도되게 되어, 고무 씨일과 단턱(10c) 사이의 기밀성을 향상시켜 연료의 누유를 1차적으로 방지하게 된다.However, when a vehicle rollover accident occurs and the stored fuel in the fuel tank is to flow back to the fuel injection pipe through the valve, the fuel is first sealed through the fuel guide passage 11d formed between the valve flanges 11c. It is led to (14), thereby improving the airtightness between the rubber seal and the step (10c) to prevent the leakage of fuel primarily.

계속해서 고무 씨일(14)에 연료 누유압력이 작용할 경우에 고무 씨일의 플랜지(14a)가 단턱(10c)을 감싸는 형태로 밀착해서 기밀을 향상시켜 2차적으로 연료의 누유를 방지하게 되며, 고무 씨일에 가해진 연료의 누유압력은 고무 씨일 그 자체를 단턱과 완전히 밀착되게 하여 기밀성을 향상시켜 3차적으로 연료의 누유를 확실하게 방지하게 되는 것이다.Then, when the fuel leakage pressure acts on the rubber seal 14, the flange 14a of the rubber seal closely adheres in the form of surrounding the step 10c to improve airtightness, thereby preventing secondary oil leakage. The oil leakage pressure of the fuel applied to the fuel oil seal itself is completely in contact with the step so that the airtightness is improved and the oil leakage of the fuel is surely prevented.

이상 설명한 바와 같이 본 발명에 따른 차량의 연료누유방지용 차단밸브에 의하면, 연료의 주입시에는 연료주입 저항압력이 최소한으로 유지되어 연료를 원활하게 주입할 수 있고, 차량의 전복사고 발생시에는 밸브 그 자체와 고무 씨일을 매개로 기밀성을 향상시켜 연료의 누유를 확실하게 방지해서 차량의 화재사고 등을 예방할 수 있는 효과가 있다.As described above, according to the shutoff valve for preventing fuel leakage of the vehicle according to the present invention, the fuel injection resistance pressure is kept to a minimum when fuel is injected, so that the fuel can be smoothly injected, and the valve itself in the event of a rollover of the vehicle. The airtightness is improved through the media and the rubber seal, which effectively prevents leakage of fuel and prevents fire accidents.

Claims (4)

소경부와 대경부를 일체로 연결하는 곡면형상의 단턱을 가진 밸브하우징과, 깔때기기 형상의 밸브바디에 밸브스템이 일체로 형성된 밸브, 상기 밸브스템에 끼워져서 상기 밸브를 탄력적으로 지지하는 스프링, 상기 밸브바디의 외주면에 장착되어 상기 단턱과 밀착하도록 곡면을 구비한 씨일을 갖춘 차량의 연료누유방지용 차단밸브.A valve housing having a curved stepped portion integrally connecting the small diameter portion and the large diameter portion, a valve body integrally formed with a funnel-shaped valve body, a spring inserted into the valve stem to elastically support the valve, A shutoff valve for preventing fuel leakage of a vehicle having a seal mounted on an outer circumferential surface of a valve body and having a curved surface to closely contact the stepped portion. 제 1항에 있어서, 상기 밸브가 상기 대경부와 밀착하도록 원주 방향으로 소정 간격을 두고 돌출되게 형성된 다수개의 밸브플랜지를 구비한 것을 특징으로 하는 차량의 연료누유방지용 차단밸브.2. The fuel leakage prevention valve of claim 1, further comprising a plurality of valve flanges protruding at predetermined intervals in a circumferential direction such that the valve is in close contact with the large diameter portion. 제 2항에 있어서, 상기 고무 씨일이 상기 단턱에 밀착하는 플랜지를 구비한 것을 특징으로 하는 차량의 연료누유방지용 차단밸브.3. The shutoff valve for preventing fuel leakage of a vehicle according to claim 2, wherein the rubber seal has a flange in close contact with the step. 제 3항에 있어서, 상기 밸브바디의 소정 외주면에는 원형의 홈이 형성되고, 상기 고무 씨일 상기 홈에 끼워져 결합된 것을 특징으로 하는 차량의 연료누유방지용 차단밸브.4. The shutoff valve for preventing fuel leakage of a vehicle according to claim 3, wherein a circular groove is formed on a predetermined outer circumferential surface of the valve body and is fitted into the groove of the rubber seal.
KR1020060112542A 2006-11-15 2006-11-15 Shutoff valve for preventing fuel leak valve in vehicle KR100837930B1 (en)

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KR101229147B1 (en) * 2010-11-16 2013-02-15 주식회사 동희산업 Shutoff valve in fuel tank

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KR100192483B1 (en) 1996-12-02 1999-06-15 정몽규 A device of fuel leakage preventing for fuel tank
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US6959727B2 (en) * 2002-04-30 2005-11-01 Eaton Corporation Siphonable check valve and method of making same

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101229147B1 (en) * 2010-11-16 2013-02-15 주식회사 동희산업 Shutoff valve in fuel tank

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