KR20090128196A - A quick coupler for a lpg vehicle - Google Patents

A quick coupler for a lpg vehicle Download PDF

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Publication number
KR20090128196A
KR20090128196A KR1020080054237A KR20080054237A KR20090128196A KR 20090128196 A KR20090128196 A KR 20090128196A KR 1020080054237 A KR1020080054237 A KR 1020080054237A KR 20080054237 A KR20080054237 A KR 20080054237A KR 20090128196 A KR20090128196 A KR 20090128196A
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South Korea
Prior art keywords
fuel
packing
spring
valve
push valve
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KR1020080054237A
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Korean (ko)
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KR101417078B1 (en
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남호균
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현대자동차주식회사
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Priority to KR1020080054237A priority Critical patent/KR101417078B1/en
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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
    • B60K15/03006—Gas tanks
    • 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
    • B60K15/03006—Gas tanks
    • B60K2015/03019—Filling of gas tanks
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/30—Use of alternative fuels, e.g. biofuels

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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)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

PURPOSE: A fuel injection port of an LPG vehicle is provided to prevent the leak of LPG fuel and to improve the safety of an LPG vehicle by closely and stably contacting a packing returning to the original position after the fuel injection is finished to a housing. CONSTITUTION: A fuel injection port(10) of an LPG vehicle is composed of a spring support(12), a push valve(14), a packing(15), a sealing end projection(16), and a spring plate(17). The spring support is installed at the upper part of the inside of a housing(11). The push valve is elastically supported on the top of the spring support with a valve spring(13). A ball(14a) is formed in the lower center of the packing. The packing is installed in the upper end of the push valve. The sealing end projection is closely contacted to the upper end of the packing in the inner upper end of the housing. The spring plate is installed in the upper end of the valve spring. A ball joint(17a) is formed in the upper center of the spring plate. The ball joint is combined to the ball of the push valve.

Description

ＬＰＧ 차량의 연료주입구 {a quick coupler for a LPG vehicle}Fuel injection port of LPK vehicle {a quick coupler for a LPG vehicle}

본 발명은 LPG 연료를 봄베에 주입할 수 있도록 하는 LPG 차량의 연료주입구에 관한 것으로, 더 자세하게는 연료를 주입한 후에 푸시밸브가 편심 상승하더라도 패킹과 하우징 사이의 기밀을 확실하게 유지할 수 있도록 한 것에 관한 것이다. The present invention relates to a fuel inlet of an LPG vehicle that can inject LPG fuel into a cylinder, and more particularly, to ensure the tightness between the packing and the housing even if the push valve rises eccentrically after the fuel is injected. It is about.

도 1에는 본 발명이 관계하는 LPG 차량의 연료시스템 구성도가 도시되어 있다.1 is a configuration diagram of a fuel system of an LPG vehicle according to the present invention.

일반적으로 LPG 차량의 연료시스템은 도 1과 같이 봄베(20)에 담겨있는 LPG 연료가 봄베(20) 내부에 설치된 연료펌프(30)를 통해 연료필터(40)를 통과하고, 피드라인(50)을 통해 레귤레이터(60)로 이송되며, 레귤레이터(60)를 거쳐 엔진으로 분사되도록 구성된다.In general, the fuel system of the LPG vehicle passes through the fuel filter 40 through the fuel pump 30 installed in the cylinder 20, the LPG fuel contained in the cylinder 20, as shown in Figure 1, the feed line 50 It is transferred to the regulator 60 through, and configured to be injected into the engine via the regulator (60).

그런데 상기 LPG 차량의 연료시스템에서 피드라인(50)의 압력이 시스템 제어 압력보다 높을 경우에는 리턴라인(70)으로 리턴된다.However, when the pressure of the feed line 50 is higher than the system control pressure in the fuel system of the LPG vehicle, it is returned to the return line 70.

한편 LPG 차량은 LPG 충전소에서 연료를 주입하게 되는데, LPG 충전소에 있 는 주유건을 봄베(20)와 접속된 연료주입구(10; 퀵커플러)에 꽂으면 LPG 연료가 연료주입구(10)와 주입호스(70)를 통해 봄베(20)로 들어가게 된다.On the other hand, the LPG vehicle injects fuel at the LPG filling station. When the gas gun at the LPG filling station is inserted into the fuel inlet 10 (quick coupler) connected to the cylinder 20, the LPG fuel is injected into the fuel inlet 10 and the injection hose. Enter 70 through the cylinder (70).

도 2a에는 종래의 LPG 차량 연료주입구의 연료 미주입시의 일부 절제 사시도가 도시되어 있고, 도 2b에는 동 종래의 LPG 차량 연료주입구의 연료 주입시의 일부 절제 사시도가 도시되어 있다.FIG. 2A illustrates a partially cutaway perspective view of a conventional LPG vehicle fuel inlet when no fuel is injected, and FIG. 2B illustrates a partially cutaway perspective view of a conventional LPG vehicle fuel inlet upon fuel injection.

종래에 있어서 LPG 차량의 연료주입구는 도 2a 및 도 2b와 같이 하우징(11')의 내부 상부에 스프링 서포트(12')가 설치되고, 스프링 서포트(12')의 상부에 밸브스프링(13')으로 탄성 지지되는 푸시밸브(14')가 설치되며, 푸시밸브(14')와 밸브스프링(13') 사이에 패킹(15')이 설치되는 형태의 것이 주로 사용되었다.Conventionally, the fuel inlet of the LPG vehicle has a spring support 12 'installed inside the housing 11' as shown in FIGS. 2A and 2B, and a valve spring 13 'disposed above the spring support 12'. The push valve 14 'which is elastically supported is installed, and the packing 15' is mainly used between the push valve 14 'and the valve spring 13'.

상기 종래의 LPG 차량의 연료주입구(10')는 도 2a와 같이 연료 미주입시에 패킹(15')과 하우징(11') 사이의 씰링에 의해 봄베 내부의 연료가 외부로 누설되지 않게 되며, 연료 주입시에 연료주입구(10')에 주유건을 삽입하여 주유건의 선단으로 푸시밸브(14')를 밀게 되면 도 2a와 같이 푸시밸브(14')와 패킹(15')이 하강하게 되므로 패킹(15')과 하우징(11') 사이에 생성된 틈으로 연료가 주입될 수 있게 된다.The fuel inlet 10 'of the conventional LPG vehicle is such that fuel inside the cylinder is not leaked to the outside by sealing between the packing 15' and the housing 11 'when the fuel is not injected as shown in FIG. 2A. When the fuel injection port 10 'is inserted into the fuel injection port 10' and the push valve 14 'is pushed to the tip of the fuel gun during injection, the push valve 14' and the packing 15 'are lowered as shown in FIG. 2A. Fuel can be injected into the gap created between the 15 ') and the housing 11'.

상기에서 연료주입구(10')를 통해 주입되는 연료는 주입호스를 통해 봄베에 저장됨은 물론이다.The fuel injected through the fuel inlet 10 'is stored in the bomb through the injection hose, of course.

한편 LPG 연료 주입을 마친 후에 연료주입구(10')에서 주유건을 분리하게 되면 밸브스프링(13')의 탄성력을 통해 하강되었던 푸시밸브(14') 및 패킹(15')이 상승하게 되고, 그에 따라 패킹(15')과 하우징(11') 사이의 씰링이 이루어지게 되어 봄베 내부의 연료가 외부로 누설되지 않게 된다.On the other hand, after the LPG fuel injection is completed, if the fuel gun is removed from the fuel inlet 10 ', the push valve 14' and the packing 15 'which are lowered through the elastic force of the valve spring 13' are raised. Accordingly, the sealing is made between the packing 15 'and the housing 11' so that fuel inside the bomb does not leak to the outside.

그런데 상기 종래의 LPG 차량의 연료주입구(10')에 있어서는 연료 주입시에 하강되었던 푸시밸브(14')가 하우징(11')과 나란히 상승되지 않고 푸시밸브(14')가 하우징(11')의 센터라인과 경사를 이루며 상승하게 되는 경우에 도 3과 같이 패킹(15')과 하우징(11') 사이의 씰링이 이루어지지 못하여 봄베 내부의 LPG 연료가 외부로 누설되는 문제가 있었다.However, in the fuel inlet 10 'of the conventional LPG vehicle, the push valve 14' that is lowered at the time of fuel injection does not rise alongside the housing 11 ', and the push valve 14' is not the housing 11 '. In the case of rising inclined with the center line, there is a problem in that the sealing between the packing 15 'and the housing 11' is not made as shown in FIG. 3 and the LPG fuel inside the bomb is leaked to the outside.

참고적으로 LPG 연료를 저장하는 봄베의 내부는 5~7기압 정도의 고압이어서 미미한 씰링 불량이 발생되더라도 봄베에 저장되어 있는 고인화성 LPG 연료가 외부로 누출되어 차량 폭발 및 화재의 위험이 매우 크게 된다.For reference, the inside of the cylinder storing LPG fuel is a high pressure of 5-7 atm, so even if a minor sealing failure occurs, the highly flammable LPG fuel stored in the cylinder leaks to the outside, which greatly increases the risk of vehicle explosion and fire. .

본 발명은 상기와 같은 종래 구조의 제결함을 감안하여 안출한 것이며, 그 목적이 연료 주입을 마친 후에 원위치로 복귀하는 패킹이 더욱 안정적으로 하우징과 밀착되도록 하는 것에 의해 LPG 연료의 누설을 방지할 수 있도록 함은 물론 LPG 차량의 안전성을 향상시킬 수 있도록 하는 LPG 차량의 연료주입구를 제공하는 데에 있는 것이다.The present invention has been devised in view of the above-mentioned deficiencies of the conventional structure, and its purpose is to prevent the leakage of LPG fuel by making the packing returning to the original position after the fuel injection be more stably in close contact with the housing. In addition to providing a fuel inlet for the LPG vehicle, as well as improving the safety of the LPG vehicle.

상기의 목적을 달성하기 위하여 본 발명은 푸시밸브의 상단에 패킹을 설치하 고 하우징의 내부 상부에 밀폐단턱을 마련하는 것, 그리고 밸브스프링 상단에 설치되는 스프링 플레이트와 푸시밸브를 볼 조인트하여 푸시밸브와 패킹이 상하방향으로 회전되도록 하는 것을 특징으로 한다.In order to achieve the above object, the present invention provides a push valve by installing a packing on the upper end of the push valve and providing a sealed step on the inner upper portion of the housing, and ball joint between the spring plate and the push valve installed on the upper end of the valve spring. And the packing is rotated in the vertical direction.

즉, 본 발명은 하우징의 내부 상부에 스프링 서포트가 설치되고, 스프링 서포트의 상부에 밸브스프링으로 탄성 지지되는 푸시밸브가 설치되는 LPG 차량의 연료주입구를 구성함에 있어서, 상기 푸시밸브의 상단에 패킹을 설치하고, 하우징의 내부 상단부에 패킹의 상단면과 밀착되는 밀폐단턱을 마련하여서 되는 것이다.That is, in the present invention, when the spring support is installed on the inner upper portion of the housing, and the fuel inlet of the LPG vehicle in which the push valve is elastically supported by the valve spring is installed on the upper part of the spring support, the packing is provided on the upper end of the push valve. It is to be installed, and to provide a closed step in close contact with the upper end of the packing in the inner upper end of the housing.

아울러 본 발명의 LPG 차량의 연료주입구는 상단 중앙에 볼조인트부가 마련된 스프링 플레이트를 밸브스프링의 상단에 설치하고, 푸시밸브의 하단 중앙에 스프링 플레이트의 볼 조인트부와 결합되는 볼을 마련한 것이다.In addition, the fuel inlet of the LPG vehicle of the present invention is provided with a ball plate coupled to the ball joint of the spring plate at the top center of the valve spring, the spring plate provided with a ball joint in the upper center, the lower end of the push valve.

본 발명에 있어서는 주유를 마친 후에 주유건을 분리하여 푸시밸브 및 패킹이 상승할 때에 주유건에 의한 푸시밸브의 편심이 발생하게 되더라도 스프링 플레이트와 볼 조인트된 푸시밸브가 수평 위치를 되찾게 되어 푸시밸브 상단의 패킹이 하우징의 밀폐단턱과 확실한 씰링을 이룰 수 있게 된다.In the present invention, even after lubrication is completed, the lubrication gun is removed by removing the lubrication gun and the push valve and packing are raised, so that the push valve jointed with the spring plate and the ball joint regains the horizontal position. The packing of the seal can make sure sealing with the closed end of the housing.

따라서 본 발명에 의하면 연료 주입 후에 연료주입구를 통한 LPG 연료의 누출을 확실하게 방지할 수 있게 되어 LPG 차량의 안전성 및 상품성을 크게 향상시킬 수 있게 되는 등의 효과를 얻을 수 있게 된다.Therefore, according to the present invention, it is possible to reliably prevent the leakage of the LPG fuel through the fuel inlet after the fuel injection, thereby achieving the effect of greatly improving the safety and the merchandise of the LPG vehicle.

이하 본 발명의 구체적인 기술내용을 첨부도면에 의거하여 더욱 자세히 설명하면 다음과 같다.Hereinafter, the specific technical details of the present invention will be described in more detail with reference to the accompanying drawings.

도 4에는 본 발명의 한 실시예의 요부 종단면도가 도시되어 있고, 도 5a에는 동 실시예의 연료 미주입시의 일부 절제 사시도가 도시되어 있으며, 도 5b에는 동 실시예의 연료 주입시의 일부 절제 사시도가 도시되어 있다.4 shows a longitudinal cross-sectional view of an essential part of an embodiment of the present invention, and FIG. 5A shows a partially cutaway perspective view of the fuel injection without the embodiment, and FIG. 5B shows a partially cutaway perspective view of the fuel injection of the embodiment. It is.

도 4 및 도 5a, 도 5b와 같이 본 발명의 LPG 차량의 연료주입구(10)는 하우징(11)의 내부 상부에 스프링 서포트(12)가 설치되고, 스프링 서포트(12)의 상부에 밸브스프링(13)으로 탄성 지지되는 푸시밸브(14)가 설치된다.As shown in FIGS. 4, 5A, and 5B, the fuel inlet 10 of the LPG vehicle according to the present invention has a spring support 12 installed at an upper portion of the housing 11, and a valve spring at an upper portion of the spring support 12. 13 is provided with a push valve 14 elastically supported.

아울러 본 발명의 LPG 차량의 연료주입구(10)에 있어서는 푸시밸브(14)의 상단에 패킹(15)이 설치되고, 하우징(11)의 내부 상단부에 패킹(15)의 상단면과 밀착되는 밀폐단턱(16)이 마련된다.In addition, in the fuel inlet 10 of the LPG vehicle of the present invention, the packing 15 is installed at the upper end of the push valve 14, and the closed step is in close contact with the upper end surface of the packing 15 at the inner upper end of the housing 11. (16) is provided.

따라서 도 5a와 같이 푸시밸브(14)와 패킹(15)에 외력이 작용하지 않는 평상시에는 밸브스프링(13)의 탄성력이 작용하는 푸시밸브(14)와 패킹(15)이 상승되고 패킹(15)이 밀폐단턱(16)에 밀착되어 안정적으로 기밀을 유지할 수 있게 되므로 봄베 내부의 LPG 연료가 연료주입구(10)를 통해 외부로 누출되지 않게 된다.Therefore, as shown in FIG. 5A, when the external force does not act on the push valve 14 and the packing 15, the push valve 14 and the packing 15 on which the elastic force of the valve spring 13 acts are raised and the packing 15 is applied. Since the gas tightly adheres to the closed step 16, it is possible to stably maintain airtightness so that LPG fuel inside the bomb does not leak to the outside through the fuel inlet 10.

한편 본 발명의 연료주입구(10)에 있어서는 상단 중앙에 볼조인트부(17a)가 마련된 스프링 플레이트(17)가 밸브스프링(13)의 상단에 설치되고, 푸시밸브(14)의 하단 중앙에 스프링 플레이트(17)의 볼 조인트부(17a)와 결합되는 볼(14a)이 마련된다.On the other hand, in the fuel inlet 10 of the present invention, a spring plate 17 having a ball joint part 17a at the top center is installed at the top of the valve spring 13, and a spring plate at the bottom center of the push valve 14. A ball 14a engaged with the ball joint part 17a of 17 is provided.

따라서 본 발명에 있어서는 스프링 플레이트(17)와 볼 조인트되는 푸시밸브(14) 및 패킹(15)이 일정범위 내에서 상하로 회전될 수 있게 된다.Therefore, in the present invention, the push valve 14 and the packing 15 which are ball jointed with the spring plate 17 can be rotated up and down within a predetermined range.

본 발명의 LPG 차량의 연료주입구(10)는 도 5a와 같이 연료 미주입시(평상시)에 밸브스프링(13)의 탄성력에 의해 상승되는 패킹(15)이 하우징(11)의 밀폐단턱(16)에 밀착되어 견고한 씰링 상태를 유지하게 됨으로써 봄베 내부의 연료가 외부로 누설되지 않게 된다.In the fuel inlet 10 of the LPG vehicle according to the present invention, as shown in FIG. 5A, the packing 15, which is lifted by the elastic force of the valve spring 13 at the time of non-injection of fuel (normally), is closed to the closed end 16 of the housing 11. The tight seal ensures that the fuel inside the cylinder does not leak to the outside.

그리고 연료 주입시에 연료주입구(10)에 주유건을 삽입하여 주유건의 선단으로 패킹(15) 및 푸시밸브(14)를 밀게 되면 도 5b와 같이 패킹(15)과 푸시밸브(14)가 하강하게 되므로 패킹(15)과 밀폐단턱(16)이 분리되고, 그 사이에 생성된 틈으로 연료가 유입되어 봄베에 주입될 수 있게 된다.When the fuel injection port 10 is inserted into the fuel injection port 10 to push the packing 15 and the push valve 14 to the tip of the fuel injection gun, the packing 15 and the push valve 14 are lowered as shown in FIG. 5B. Therefore, the packing 15 and the sealing step 16 are separated, and the fuel is introduced into the gap created therebetween so that the fuel can be injected into the cylinder.

본 발명에 있어서 LPG 연료 주입을 마친 후에 연료주입구(10)에서 주유건을 분리하게 되면 밸브스프링(13)의 탄성력을 통해 하강되었던 푸시밸브(14) 및 패킹(15)이 상승하게 되고, 그에 따라 패킹(15)이 다시 하우징(11)의 밀폐단턱(16)에 밀착되어 견고하게 씰링됨으로써 봄베 내부의 연료가 외부로 누설되지 않게 된다.In the present invention, after the LPG fuel injection is completed, when the fuel gun is separated from the fuel inlet 10, the push valve 14 and the packing 15 which are lowered through the elastic force of the valve spring 13 are raised, and accordingly, The packing 15 is again tightly sealed to the closed end 16 of the housing 11 so that the fuel inside the cylinder is not leaked to the outside.

한편 본 발명에 있어서는 주유를 마친 후에 주유건을 분리하여 푸시밸브(14)에 대한 가압력이 없어지게 되고, 밸브스프링(13)의 탄성력으로 푸시밸브(14) 및 패킹(15)이 상승되어 패킹(15)이 하우징(11)의 밀폐단턱(16)에 밀착될 때에 주유건에 의한 푸시밸브의 편심(푸시밸브가 하우징과 나란히 움직이지 않고 푸시밸브가 하우징의 센터라인과 경사를 이루며 상승)이 발생하게 되더라도 푸시밸브(14)가 스프링 플레이트(17)와 볼 조인트되어 상하방향으로 회동할 수 있게 되기 때문에 하 우징의 밀폐단턱(16)과 밀착되는 패킹(15) 및 푸시밸브(14)가 수평 위치를 되찾게 되어 보다 확실한 씰링을 이룰 수 있게 된다.On the other hand, in the present invention, after the lubrication is finished, the lubrication gun is removed so that the pressing force on the push valve 14 disappears, and the push valve 14 and the packing 15 are lifted up by the elastic force of the valve spring 13 and the packing ( When 15) comes into close contact with the closed end 16 of the housing 11, an eccentricity of the push valve due to the main oil gun (the push valve does not move in parallel with the housing and the push valve is inclined with the center line of the housing) occurs. Even though the push valve 14 is ball joint with the spring plate 17 to be able to rotate in the vertical direction, the packing 15 and the push valve 14 which are in close contact with the closed end 16 of the housing are in a horizontal position. It will be able to regain a more secure sealing.

이상에서 설명한 본 발명은 전술한 실시예 및 도면에 의해 한정되는 것은 아니고, 본 발명의 기술적 사상을 벗어나지 않는 범위 내에서 여러 가지 치환, 변형 및 변경이 가능함은 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 있어 명백할 것이다.The present invention described above is not limited to the above-described embodiments and drawings, and various permutations, modifications, and changes can be made without departing from the technical spirit of the present invention. It will be apparent to those who have

도 1은 본 발명이 관계하는 LPG 차량의 연료시스템 구성도1 is a configuration diagram of a fuel system of an LPG vehicle according to the present invention.

도 2a는 종래의 LPG 차량 연료주입구의 연료 미주입시의 일부 절제 사시도2A is a partially cutaway perspective view of a conventional LPG vehicle fuel inlet when fuel is not injected;

도 2b는 동 종래의 LPG 차량 연료주입구의 연료 주입시의 일부 절제 사시도2B is a partially cutaway perspective view of fuel injection of the conventional LPG vehicle fuel inlet;

도 3은 동 종래의 LPG 차량 연료주입구의 연료 누출 상태의 종단면도3 is a longitudinal sectional view of a fuel leak state of the conventional LPG vehicle fuel inlet;

도 4는 본 발명의 한 실시예의 요부 종단면도4 is a longitudinal sectional view showing main parts of one embodiment of the present invention;

도 5a는 동 실시예의 연료 미주입시의 일부 절제 사시도 5A is a partially cutaway perspective view of a fuel injecting example of the embodiment;

도 5b는 동 실시예의 연료 주입시의 일부 절제 사시도5B is a partially cutaway perspective view of the fuel injection of the embodiment;

< 도면의 주요 부분에 대한 부호 설명 ><Explanation of Signs of Major Parts of Drawings>

10 : 연료주입구 11 : 하우징10: fuel inlet 11: housing

12 : 스프링 서포트 13 : 밸브스프링12: spring support 13: valve spring

14 : 푸시밸브 14a : 볼14: push valve 14a: ball

15 : 패킹 16 : 밀폐단턱15 packing 16 closed step

17 : 스프링 플레이트 17a : 볼 조인트부17: spring plate 17a: ball joint portion

Claims (2)

하우징의 내부 상부에 스프링 서포트가 설치되고, 스프링 서포트의 상부에 밸브스프링으로 탄성 지지되는 푸시밸브가 설치되는 LPG 차량의 연료주입구를 구성함에 있어서, 상기 푸시밸브의 상단에 패킹을 설치하고, 하우징의 내부 상단부에 패킹의 상단면과 밀착되는 밀폐단턱을 마련한 것을 특징으로 하는 LPG 차량의 연료주입구.In the fuel inlet of the LPG vehicle in which the spring support is installed in the upper part of the housing, and the push valve elastically supported by the valve spring is installed on the upper part of the spring support, a packing is installed on the upper end of the push valve, The fuel injection port of the LPG vehicle, characterized in that the inner end is provided with a closed step in close contact with the upper end of the packing. 제1항에 있어서, 상단 중앙에 볼조인트부가 마련된 스프링 플레이트를 밸브스프링의 상단에 설치하고, 푸시밸브의 하단 중앙에 스프링 플레이트의 볼 조인트부와 결합되는 볼을 마련한 것을 특징으로 하는 LPG 차량의 연료주입구.The fuel of an LPG vehicle according to claim 1, wherein a spring plate provided with a ball joint part at a center of an upper end thereof is installed at an upper end of the valve spring, and a ball engaged with a ball joint part of a spring plate is provided at a lower center of the push valve. Inlet.
KR1020080054237A 2008-06-10 2008-06-10 a quick coupler for a LPG vehicle KR101417078B1 (en)

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JPH0671245U (en) * 1993-03-23 1994-10-04 ダイハツ工業株式会社 Injected fuel backflow prevention device
KR100282291B1 (en) * 1998-07-18 2002-05-09 전점영 Solenoid valve
KR100361290B1 (en) * 2000-08-26 2002-11-18 현대자동차주식회사 Reuse device of lpg fuel for vehicle
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