KR20090037772A - Thermostat for automobile - Google Patents

Thermostat for automobile Download PDF

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Publication number
KR20090037772A
KR20090037772A KR1020070103289A KR20070103289A KR20090037772A KR 20090037772 A KR20090037772 A KR 20090037772A KR 1020070103289 A KR1020070103289 A KR 1020070103289A KR 20070103289 A KR20070103289 A KR 20070103289A KR 20090037772 A KR20090037772 A KR 20090037772A
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KR
South Korea
Prior art keywords
cover
main spring
plate
adaptor
protrusion
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KR1020070103289A
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Korean (ko)
Inventor
하시봉
Original Assignee
베어코리아 주식회사
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Priority to KR1020070103289A priority Critical patent/KR20090037772A/en
Publication of KR20090037772A publication Critical patent/KR20090037772A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/14—Indicating devices; Other safety devices
    • F01P11/16—Indicating devices; Other safety devices concerning coolant temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P2007/146—Controlling of coolant flow the coolant being liquid using valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2050/00—Applications
    • F01P2050/22—Motor-cars
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
    • F16F1/04—Wound springs

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Temperature-Responsive Valves (AREA)

Abstract

A cover integrated thermostat for vehicle is provided to use an adaptor supporting a main spring in order to remove a frame supporting the main spring. A cover integrated thermostat for vehicle comprises: a cover(5) of a tube shape in which a protrusion(4) is in the inside, and the cooling water flows; an element(7) in which an end part of a rod(6) is supported with the protrusion, inserted to the inside of the cover; a plate(8) inserted in the element, opening and closing an inner duct of the cover; a main spring(9), whose one end contacts the plate, inserted to the outer side of the element in order for the plate to block the inner duct of the cover; and an adaptor(11) installed between a conduit line(2) and the cover of a main body(1). The adaptor has a stopper(13) hanging on an inlet part of the conduit line in the main body; a spiral extended portion(10) in the inside of the adaptor; and an element insertion hole located at one end of the main spring. The other side of the main spring is supported with the adaptor.

Description

차량용 커버 일체형 써모스탯{Thermostat for automobile}Cover integrated thermostat for vehicle {Thermostat for automobile}

본 발명은 차량용 써모스탯으로서 커버와 일체형으로 결합되어 워터펌프 또는 실린더 해드 등에 장착되는 것으로, 메인 스프링을 지지하는 어뎁터를 사용함으로써 종래의 메인 스프링을 지지하기 위한 프레임을 체결하는 홈을 커버의 내측에 가공하여야 하는 제조상의 문제점을 해소할 수 있는 차량용 커버 일체형 써모스탯에 관한 것이다.The present invention is integrally coupled with the cover as a thermostat for a vehicle and mounted on a water pump or a cylinder head, and by using an adapter for supporting the main spring, a groove for fastening a frame for supporting a conventional main spring is provided inside the cover. A cover integrated thermostat for a vehicle capable of solving manufacturing problems to be processed.

[문헌 1] 한국 특허등록 제0718091호, 2007.05.08[Document 1] Korean Patent Registration No. 0718091, 2007.05.08

[문헌 2] 한국 실용신안등록 제0159685호, 1999.08.02[Document 2] Korean Utility Model Registration No. 0159685, 1999.08.02

자동차 등의 냉각시스템은 엔진을 적정온도로 유지시키기 위하여 예열시에는 냉각수를 엔진의 내부에서만 순환되게 하고, 일정 온도에 이르면 냉각수를 라디에이터로 순환시켜 냉각시킨 후 엔진으로 재유입시켜 엔진의 과열을 방지하는 역할을 한다.In order to keep the engine at a proper temperature, a cooling system such as a vehicle causes the coolant to be circulated only in the engine during preheating, and when a certain temperature is reached, the coolant is circulated to the radiator to be cooled and then reflowed into the engine to prevent the engine from overheating. It plays a role.

이와 같은 냉각시스템은 냉각수가 순환하는 바이패스관과 라디에이터 및 워터펌프가 순환되는 관로에 설치되고, 냉각수를 바이패스관과 라디에이터로의 순환을 결정하는 써모스탯이 관로의 적정 위치에 설치된다.Such a cooling system is installed in a bypass pipe through which cooling water circulates, a pipe through which a radiator and a water pump are circulated, and a thermostat determining circulation of the cooling water into the bypass pipe and the radiator is installed at an appropriate position of the pipe.

써모스탯는 엔진의 냉각수가 유출되는 곳에 설치되거나, 라디에이터를 거친 냉각수가 엔진으로 유입되는 곳에 설치되기도 하는데, 이는 각각의 장단점에 의해 결정된다. 또한 본 발명과 같이 커버 일체형의 경우는 워터펌프 또는 실린더 해드 등에 커버를 장착하고, 이의 내부에 엘러먼트 등을 설치하게 된다.Thermostats are installed where the coolant from the engine flows out, or where the coolant from the radiator flows into the engine, which is determined by its strengths and weaknesses. In the case of the integrated cover like the present invention, the cover is mounted on a water pump or a cylinder head, and an element or the like is installed therein.

냉각수는 엔진의 실린더 블록, 실린더 헤드를 거쳐 가열되고, 일정한 온도로 가열된 냉각수는 써모스탯의 엘러먼트에 충진된 왁스를 팽창시켜 관로를 막고 있던 플레이트를 밀어 열리게 함으로써 냉각수가 라디에이터로 순환되어 냉각된 후 엔진으로 재유입된다.The coolant is heated through the cylinder block and cylinder head of the engine, and the coolant heated to a constant temperature expands the wax filled in the element of the thermostat to push open the plate blocking the conduit so that the coolant is circulated and cooled by the radiator. And then reintroduced to the engine.

이와 같이 내연기관에서 엔진 시동 후에는 신속하게 냉각수를 적정온도까지 높이고, 과냉을 방지하기 위하여 냉각수 순환관로의 도중에 써모스탯을 장착하고 있다. 써모스탯은 냉각수의 온도에 의해 밸브가 자동 개폐되도록 왁스를 엘러먼트 속에 밀봉시키고 열에 의해 왁스가 팽창 및 수축을 하는 것을 피스톤의 직선운동으로 변환시켜 플레이트를 열리게 하는 구조가 일반적이다.In this way, after the engine is started in the internal combustion engine, the thermostat is mounted in the middle of the cooling water circulation pipe in order to quickly raise the cooling water to an appropriate temperature and prevent overcooling. Thermostat is generally structured to seal the wax in the element so that the valve is automatically opened and closed by the temperature of the coolant, and to open the plate by converting the expansion and contraction of the wax into a linear movement of the piston.

써모스탯이 밸브의 역할을 할 수 있도록 하기 위한 일반적인 구조는 배경기술의 [문헌 1]에 나타난 바와 같이 라디에이터로 가는 관로에 설치되고 상부에 아치형으로 돌출된 지지대가 형성된 베이스플레이트와, 베이스플레이트에 설치되고 내측으로 재치홈이 형성된 다수개의 아암과, 상기 재치홈에 체결되어 메인 스프링을 지지하는 프레임과, 상기 베이스플레이트에 접촉되는 메인 플레이트가 고정설치되고 프레임과 상기 메인플레이트의 사이에 재치된 메인 스프링에 의해 탄성지지된 바디(엘러먼트)로 구서된다.The general structure for allowing the thermostat to act as a valve is installed in the base plate, which is installed in the pipeline to the radiator and has an arched projecting support on the top, as shown in [Background 1] of the background art. And a plurality of arms having an inboard groove formed therein, a frame fastened to the indentation groove to support the main spring, and a main plate contacting the base plate and mounted between the frame and the main plate. It is made into an elastically supported body (element).

상기에 있어서 아암은 커버가 대신할 수 있고, 커버는 원통 형상으로 된 경우도 있으며, 이 때에도 프레임에 체결되는 재치홈이 형성되어야 한다.In the above, the arm may be replaced by a cover, and the cover may have a cylindrical shape. In this case, a mounting groove to be fastened to the frame should be formed.

이와 같이 메인 스프링을 지지하기 위하여 프레임을 지지하기 위한 구조를 가지는 아암이나 커버에 재치홈을 가공하기가 어렵고, 이에 따라 제조 원가의 상승 요인이된다.In this way, it is difficult to process the mounting groove in the arm or cover having a structure for supporting the frame in order to support the main spring, thereby increasing the manufacturing cost.

본 발명은 스프링을 지지하는 프레임의 구성을 삭제함과 동시에, 프레임을 체결하기 위한 아암이나 커버의 재치홈을 가공하지 않아도 되는 구조를 제공하게 된다.The present invention eliminates the configuration of the frame supporting the spring, and at the same time provides a structure that does not require processing the mounting groove of the arm or cover for fastening the frame.

본 발명에 의하면, 커버와 일체형으로 하고 메인 스프링을 지지하는 프레임을 제거하는 대신에 어뎁터를 설치함으로써, 부품의 형상과 조립 공정이 단수하여 생산성이 향상되고, 어뎁터의 구조를 냉각수와 왁스와의 열교환이 좋도록 다양하게 실시할 수 있어 냉각 성능은 물론이고 써머스탯의 정확성을 향상시킬 수 있게 된다.According to the present invention, by installing the adapter instead of removing the frame supporting the main spring by being integrated with the cover, the shape of the parts and the assembly process are simple and the productivity is improved, and the structure of the adapter is exchanged between the cooling water and the wax. This can be done in various ways to improve cooling accuracy and improve the accuracy of the thermostat.

본 발명은 워터펌프 또는 실린더 해드 등에 장착되는 차량용 커버 일체형 써모스탯이다. 따라서 워터펌프 또는 실린더 해드 등 본 발명이 장착되는 부분을 이하에서는 본체(1)라 하고, 본체(1)에는 냉각수가 흐르는 관로(2)가 형성되어 있으며, 관로(2) 단부에 본 발명이 설치된다.The present invention is a vehicle cover integrated thermostat mounted on a water pump or cylinder head. Therefore, a part to which the present invention is mounted, such as a water pump or a cylinder head, is referred to as a main body 1 below, and a main body 1 has a conduit 2 through which cooling water flows, and the present invention is installed at the end of the conduit 2. do.

본 발명에 의한 일실시예는 관로(2)가 형성된 본체(1)에 씰링(3)으로 기밀되게 설치되고, 내부에 돌기(4)가 형성되며, 냉각수가 흐르는 관체 형상의 커버(5); 상기 돌기(4)에 로드(6)의 단부가 지지되게 커버(5)의 내부로 삽입된 엘러먼트(7); 상기 엘러먼트(7)에 끼워져 커버(5)의 내부 관로를 개폐할 수 있게 설치된 플레이트(8); 상기 플레이트(8)를 커버(5)의 내부 관로를 막도록 일측이 접촉되게 설치되어 탄성력을 부여하고, 엘러먼트(7)의 외측으로 끼워진 메인 스프링(9); 원통관체의 일단부의 외측에 상기 커버(5)에 긴밀하게 삽입되고 본체(1)에 형성된 관로(2)의 입구부에 걸리도록 스토퍼(13)가 빙 둘러 형성되고, 내부에 나선 돌조(10)가 형 성되어 상기 메인 스프링(9)의 타측이 지지되며, 일단부에 엘러먼트 삽입공(12)이 형성된 관체 형상의 어뎁터(11);를 포함하여 구성된다.One embodiment according to the present invention is installed in the main body (1) formed with a conduit (2) is hermetically installed with a sealing (3), a projection (4) is formed therein, the tubular cover (5) through which cooling water flows; An element (7) inserted into the cover (5) so that the end of the rod (6) is supported by the protrusion (4); A plate (8) fitted to the element (7) and installed to open and close the inner conduit of the cover (5); A main spring (9) installed at one side of the plate (8) so as to contact the inner conduit of the cover (5) to impart an elastic force and fitted to the outside of the element (7); A stopper 13 is formed around the one end of the cylindrical tubular body so as to be tightly inserted into the cover 5 and caught at the inlet of the conduit 2 formed in the main body 1, and the spiral protrusion 10 is formed therein. Is formed and the other side of the main spring (9) is supported, the tube-shaped adapter (11) formed with an element insertion hole 12 at one end; is configured to include.

상기의 어뎁터(11)의 내부에는 나선 돌조(10)가 형성되어 냉각수의 흐름에 와류를 형성시키는 등, 다양한 유형을 가질 수 있다. 그리고 어뎁터(11)의 일단에 형성된 엘러먼트 삽입공(12)의 외측으로는 메인 스프링(9)이 재치되는 구조가 형성되어 있다.The spiral protrusion 10 is formed inside the adapter 11 to form a vortex in the flow of cooling water, and may have various types. And the structure which the main spring 9 is mounted in the outer side of the element insertion hole 12 formed in the end of the adapter 11 is formed.

이와 같은 본 발명은 도 1에 분해 사시도가 도시되어 있고, 도 2와 도 3에 작동 상태가 도시되어 있으며, 구조적인 특징에 의해 가공 및 설치에 있어서 매우 용이하다.The present invention is shown in exploded perspective view in Figure 1, the operating state is shown in Figures 2 and 3, it is very easy in processing and installation by the structural features.

즉, 본 발명의 설치는 커버(5)의 내부에 엘러먼트(7)의 로드(6)가 커버(5) 내부에 형성된 돌기(4)에 지지될 수 있도록 삽입하고, 엘러먼트(7)에 플레이트(8)를 삽입하며, 메인 스프링(9)의 일측 단부가 플레이트(8)에 지지되게 삽입한다.That is, the installation of the present invention is inserted so that the rod (6) of the element (7) in the inside of the cover (5) can be supported by the projection (4) formed in the cover (5), the element (7) The plate 8 is inserted, and one end of the main spring 9 is inserted to be supported by the plate 8.

그리고 어뎁터(11)를 메인 스프링(9)의 타단이 지지되게 하여 이에 형성된 엘러먼트 삽입공(12)으로 엘러먼트(7)가 삽입되게 설치한다. 그리고 씰링(3)을 커버(5)와 본체(1)의 접합부에 끼워 체결하면 설치가 완료된다.The adapter 11 is installed so that the other end of the main spring 9 is supported so that the element 7 is inserted into the element insertion hole 12 formed therein. Installation is completed by fitting the sealing 3 to the junction of the cover 5 and the main body 1.

어뎁터(11)의 일측 외주면에는 스토퍼(13)가 환설되어 있어, 본체(1)의 관로(2)에 삽입하더라도 스토퍼(13)에 의해 걸리게 되어 메인 스프링(9)은 플레이트(8)와 어뎁터(11)에 의해 탄성력을 발휘하게 된다.A stopper 13 is provided on one side of the outer circumferential surface of the adapter 11 so that the stopper 13 is caught by the stopper 13 even when inserted into the conduit 2 of the main body 1 so that the main spring 9 is connected to the plate 8 and the adapter ( 11) the elastic force is exerted.

이와 같이 본 발명은 커버(5)를 본체(1)에 그대로 장착하기만 하면 되고, 메인 스프링(9)의 설치를 위한 어떠한 가공도 불필요하게 된다. 즉, 종래의 경우는 커버(5) 등에 메인 스프링(9)의 타단부를 지지하는 프레임을 설치할 수 있도록 재치홈을 가공하여야 했으나, 본 발명은 어뎁터(11)를 본체(1)의 관로(2)에 삽입하기만 하면 되는 간단한 구조이다. 특히 종래의 재치홈은 성형으로 불가하여 모두 기계적인 가공을 행하였으므로 그 제조가 더욱 어려웠으나, 본 발명의 어뎁터(11)는 간단한 성형으로 제조할 수 있게 되어 생산성 또한 향상된다.Thus, the present invention only needs to mount the cover 5 to the main body 1 as it is, and no processing for installing the main spring 9 is necessary. That is, in the conventional case, the mounting groove had to be processed so that the frame supporting the other end of the main spring 9 could be installed on the cover 5 or the like. However, in the present invention, the adapter 11 is connected to the pipe 2 of the main body 1. It's a simple structure that just needs to be inserted into). In particular, since the conventional mounting grooves are impossible to be molded and all have been mechanically processed, the manufacture thereof is more difficult. However, the adapter 11 of the present invention can be manufactured by simple molding, thereby improving productivity.

그리고 본 발명은 어뎁터(11)를 사용함으로써 다른 기능을 부가하여 써머스탯의 신뢰성을 향상시킬 수 있게 된다. 즉, 도 1에 도시된 바와 같은 형상의 어뎁터(11)를 적용할 수 있을 뿐만 아니라, 엘러먼트(7)를 커버(5) 바깥으로 돌출될 수 있도록 어뎁터(11) 형상을 바꾸어 적용할 수 있다. 그리고, 도 3에 도시된 바와 같이, 어뎁터(11)의 관로 내측에 나선 돌조(10)를 형성시키는 경우, 이를 통해 흐르는 냉각수가 와류를 형성시키게 되어, 엘러먼트(7)에 많은 열을 전달할 수 있게 된다. 따라서 냉각수 온도에 따라 써머스탯이 작동되므로, 정확한 냉각수의 열이 엘러먼트(7)에 곧바로 전달될 수 있어 냉각수 온도 제어가 빠르고 정확하여 신뢰성이 향상된다.In addition, the present invention may improve the reliability of the thermostat by adding another function by using the adapter 11. That is, not only the adapter 11 having a shape as shown in FIG. 1 may be applied, but also the adapter 11 may be changed in shape so that the element 7 may protrude out of the cover 5. . And, as shown in Figure 3, when forming the spiral protrusion 10 inside the pipeline of the adapter 11, the cooling water flowing through it forms a vortex, which can transfer a lot of heat to the element (7) Will be. Therefore, since the thermostat is operated according to the coolant temperature, the heat of the correct coolant can be transferred directly to the element 7, so that the coolant temperature control is fast and accurate, thereby improving reliability.

도 1은 본 발명의 분해 사시도1 is an exploded perspective view of the present invention

도 2는 본 발명이 장착된 상태도Figure 2 is a state equipped with the present invention

도 3은 본 발명이 작동하는 상태도3 is a state diagram in which the present invention operates

※ 도면의 주요 부분에 대한 부호의 설명※ Explanation of codes for main parts of drawing

1 : 본체 2 : 관로1: body 2: pipeline

3 : 씰링 4 : 돌기3: sealing 4: protrusion

5 : 커버 6 : 로드5: cover 6: rod

7 : 엘러먼트 8 : 플레이트7: element 8: plate

9 : 메인 스프링 10 : 나선 돌조9: main spring 10: spiral protrusion

11 : 어뎁터 12 : 엘러먼트 삽입공11: adapter 12: element insertion hole

13 : 스토퍼13: stopper

Claims (1)

관로(2)가 형성된 본체(1)에 씰링(3)으로 기밀되게 설치되고, 내부에 돌기(4)가 형성되며, 냉각수가 흐르는 관체 형상의 커버(5); 상기 돌기(4)에 로드(6)의 단부가 지지되게 커버(5)의 내부로 삽입된 엘러먼트(7); 상기 엘러먼트(7)에 끼워져 커버(5)의 내부 관로를 개폐할 수 있게 설치된 플레이트(8); 상기 플레이트(8)를 커버(5)의 내부 관로를 막도록 일측이 접촉되게 설치되어 탄성력을 부여하고, 엘러먼트(7)의 외측으로 끼워진 메인 스프링(9); 원통관체의 일단부의 외측에 상기 커버(5)에 긴밀하게 삽입되고 본체(1)에 형성된 관로(2)의 입구부에 걸리도록 스토퍼(13)가 빙 둘러 형성되고, 내부에 나선 돌조(10)가 형성되어 상기 메인 스프링(9)의 타측이 지지되며, 일단부에 엘러먼트 삽입공(12)이 형성된 관체 형상의 어뎁터(11);를 포함하여 구성됨을 특징으로 하는 차량용 커버 일체형 써모스탯.A cover 5 having a tubular shape in which the air passage 2 is formed to be hermetically installed with a sealing 3, a protrusion 4 is formed therein, and a cooling water flows; An element (7) inserted into the cover (5) so that the end of the rod (6) is supported by the protrusion (4); A plate (8) fitted to the element (7) and installed to open and close the inner conduit of the cover (5); A main spring (9) installed at one side of the plate (8) so as to contact the inner conduit of the cover (5) to impart an elastic force and fitted to the outside of the element (7); A stopper 13 is formed around the one end of the cylindrical tubular body so as to be tightly inserted into the cover 5 and caught at the inlet of the conduit 2 formed in the main body 1, and the spiral protrusion 10 is formed therein. Is formed is supported on the other side of the main spring (9), the tubular shape adapter (11) having an element insertion hole (12) formed at one end; integral cover for a vehicle thermostat characterized in that it comprises a.
KR1020070103289A 2007-10-13 2007-10-13 Thermostat for automobile KR20090037772A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101022102B1 (en) * 2009-06-26 2011-03-17 베어코리아 주식회사 Opening-closing structure for fluid passage

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0211289U (en) * 1988-07-07 1990-01-24
JPH0688526A (en) * 1992-09-07 1994-03-29 Toyota Motor Corp Cooling system of internal combustion engine
KR100375766B1 (en) * 2000-09-01 2003-03-15 현대자동차주식회사 Thermostat
JP2007071064A (en) * 2005-09-05 2007-03-22 Kuzee:Kk Cooling water switching device
KR100755264B1 (en) * 2006-03-17 2007-09-04 고려전자주식회사 Thermostat apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0211289U (en) * 1988-07-07 1990-01-24
JPH0688526A (en) * 1992-09-07 1994-03-29 Toyota Motor Corp Cooling system of internal combustion engine
KR100375766B1 (en) * 2000-09-01 2003-03-15 현대자동차주식회사 Thermostat
JP2007071064A (en) * 2005-09-05 2007-03-22 Kuzee:Kk Cooling water switching device
KR100755264B1 (en) * 2006-03-17 2007-09-04 고려전자주식회사 Thermostat apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101022102B1 (en) * 2009-06-26 2011-03-17 베어코리아 주식회사 Opening-closing structure for fluid passage

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