KR920003628Y1 - Hinge in emergency ventilation window - Google Patents

Hinge in emergency ventilation window Download PDF

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Publication number
KR920003628Y1
KR920003628Y1 KR2019890002803U KR890002803U KR920003628Y1 KR 920003628 Y1 KR920003628 Y1 KR 920003628Y1 KR 2019890002803 U KR2019890002803 U KR 2019890002803U KR 890002803 U KR890002803 U KR 890002803U KR 920003628 Y1 KR920003628 Y1 KR 920003628Y1
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KR
South Korea
Prior art keywords
piston
ventilation window
window
hinge
cylinder
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Application number
KR2019890002803U
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Korean (ko)
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KR900017199U (en
Inventor
박갑일
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박갑일
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Priority to KR2019890002803U priority Critical patent/KR920003628Y1/en
Publication of KR900017199U publication Critical patent/KR900017199U/en
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Publication of KR920003628Y1 publication Critical patent/KR920003628Y1/en

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    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05FDEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00Power-operated mechanisms for wings
    • E05F15/70Power-operated mechanisms for wings with automatic actuation
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05FDEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F1/00Closers or openers for wings, not otherwise provided for in this subclass
    • E05F1/002Closers or openers for wings, not otherwise provided for in this subclass controlled by automatically acting means
    • E05F1/006Closers or openers for wings, not otherwise provided for in this subclass controlled by automatically acting means by emergency conditions, e.g. fire
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05FDEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00Power-operated mechanisms for wings
    • E05F15/50Power-operated mechanisms for wings using fluid-pressure actuators
    • E05F15/53Power-operated mechanisms for wings using fluid-pressure actuators for swinging wings
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05FDEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00Power-operated mechanisms for wings
    • E05F15/70Power-operated mechanisms for wings with automatic actuation
    • E05F15/72Power-operated mechanisms for wings with automatic actuation responsive to emergency conditions, e.g. fire
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05FDEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F3/00Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/20Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices in hinges
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00Constructional elements; Accessories therefor
    • E05Y2201/20Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
    • E05Y2201/23Actuation thereof
    • E05Y2201/232Actuation thereof by automatically acting means
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2600/00Mounting or coupling arrangements for elements provided for in this subclass
    • E05Y2600/10Adjustable
    • E05Y2600/11Adjustable by automatically acting means
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2800/00Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/25Emergency conditions
    • E05Y2800/252Emergency conditions the elements functioning only in case of emergency
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00Application of doors, windows, wings or fittings thereof
    • E05Y2900/10Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13Type of wing
    • E05Y2900/148Windows

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Special Wing (AREA)
  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)

Abstract

내용 없음.No content.

Description

건물용 환기창문의 힌지장치Hinge device for building ventilation windows

제1도는 본 고안의 일부를 절개한 분리사시도.1 is an exploded perspective view of a part of the present invention.

제2도는 본 고안이 조립된 상태의 작동상태 횡단면도.Figure 2 is a cross-sectional view of the operating state of the present invention assembled.

제3도는 본 고안이 조립된 상태의 작동상태 종단면도.Figure 3 is a longitudinal cross-sectional view of the operating state of the present invention assembled.

제4도는 본 고안이 적용된 환기창문을 설치한 상태의 설명도.4 is an explanatory diagram of a state in which the ventilation window to which the present invention is applied.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

10 : 케이스 20 : 뚜껑판10: case 20: cover plate

30 : 힌지축 31, 31' : 회전판30: hinge shaft 31, 31 ': rotating plate

40 : 실린더 41 : 피스톤40: cylinder 41: piston

42 : 피스톤로드 43 : 코일스프링42: piston rod 43: coil spring

44 : 체크밸브 50, 51 : 바이패스통로44: check valve 50, 51: bypass passage

50a, 50b, 51a, 51b : 개구 52, 52' : 유량조절구50a, 50b, 51a, 51b: openings 52, 52 ': flow regulator

본 고안은 건물의 유리창 일부에 마련되는 환기창문의 힌지장치에 관한 것으로서, 특히 건물의 화재발생시 화재감지기의 신호에 의해 자동으로 작동되도록 설치되는 환기창문에 적합하게 적용되도록 구성한 건물용 환기창문의 힌지장치에 관한 것이다.The present invention relates to a hinge device of a ventilation window provided in a part of a glass window of a building, and particularly to a hinge device of a building ventilation window configured to be suitably applied to a ventilation window installed to be operated automatically by a signal of a fire detector when a building fire occurs. It is about.

일반적으로 건물에 유리창을 설치함에 있어서, 대형건물일 경우에는 전체를 유리창으로 하거나 또는 유리창의 일부분에 실내의 환기를 위한 소형창문을 설치하여 환기등의 필요에 따라 소형창문을 수동으로 개폐하도록 한 것이 있고, 공장, 창고, 체육관 등의 특수 건물일 경우에는 높은 곳에 창문을 설치하여 밑에서 수동으로 개폐시킬 수 있도록 별도의 장치를 부설한다는 것은 주지된 사실이다.In general, in installing a glass window in a building, in the case of a large building, the entire window is a glass window or a small window for ventilation of the room is installed in a part of the glass window to manually open and close the small window as needed for ventilation. In the case of special buildings such as factories, warehouses, and gymnasiums, it is well known that a separate device is installed so that windows can be manually opened and opened from the bottom.

그러나, 이와같이 수동으로 개폐가능한 소형창문들은 실내에서의 화재 발발시 발생되는 유독가스 및 연기를 능동적으로 대처하여 외부로 배출시키지 못하고 인력에 의한 수동수단에 의해서만 외부로 배출시킬 수 있는 바, 실내에 있던 사람들이 유독가스 및 연기에 질식사하는 것을 미연에 방지할 수 없다는 단점이 있기 때문에 근래에는 일정 기준 이상의 대형건물에는 화재에 대비하여 화재감지신호에 의해 자동으로 작동되는 환기창문을 설치함으로써, 화재발생시 유독가스 및 연기를 적극적으로 배출시켜 질식사고를 미연에 방지할 수 있도록 하고 있다.However, such small windows that can be opened and closed manually cannot be discharged to the outside by actively coping with toxic gases and smoke generated when a fire breaks out in the room. Because people cannot choke on toxic gas and smoke in advance, they have recently installed ventilation windows that are automatically operated by fire detection signals in preparation for a fire. By actively discharging gas and smoke, it is possible to prevent suffocation accidents.

그러나 상기의 환기창문은 강한 스프링의 탄발력에 의해 열리도록 되어 있어 창문이 열릴때 강한 충격과 소음이 발생되는 문제점이 있었다.However, the ventilation window is to be opened by the spring force of the strong spring has a problem that a strong shock and noise is generated when the window is opened.

본 고안의 목적은 상기와 같은 점을 해결하기 위하여 환기창문을 정숙하게 열리도록 한 건물용 환기창문의 힌지장치를 제공함에 있다.It is an object of the present invention to provide a hinge device for a building ventilation window for quietly opening the ventilation window in order to solve the above problems.

이하, 본 고안을 도면에 의거하여 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the drawings.

케이스(10)의 내부 일측에 회전판(31), (31')을 가진 힌지축(30)을 회전가능하게 설치하고, 상기 케이스(10)의 타측에는 실린더(40)와 피스톤 로드(42)를 설치하여 이 피스톤로드(42)의 선단을 상기 회전판(31), (31')의 편심위치에 체인(60)과 레버(61)를 연결하여서된 것에 있어서, 상기 실린더(40)에 전방과 후방에 개구(50a), (50b)가 마련된 초기속도 조절바이패스 통로(50)를 형성하고, 또 상기 개구(50b)의 인근 전후방에 개구(51a), (51b)가 마련된 말기속도조절 바이패스통로(51)를 형성하되, 상기 개구(50a)와 개구(51a) 유량조절구(52), (52')에 의해 바이패스 통과유량을 조절 가능하게 하는 한편, 상기 피스톤로드(42)에 결합되어 실린더(40)의 내부를 왕복하는 피스톤(41)에는 피스톤의 후퇴시 유로를 막아주는 체크밸브(4)를 형성하고, 후방으로의 탄발력을 작용하는 이중 코일 스프링(43)을 설치한 다음 실린더(40) 내부에 오일을 충전하여서 구성된 것으로, 미설명부호 11은 축지지홈, 20은 뚜껑판, 21은 축공, 32는 평삭부, 33은 고정핀, 45는 캡, 70은 상하축을 중심으로 회동가능하게 설치된 환기창문, 71은 환기창틀, 80은 창틀, 90은 화재감지신호(S)에 의해 작동되는 록크장치이다.The hinge shaft 30 having the rotating plates 31 and 31 'is rotatably installed on one side of the case 10, and the cylinder 40 and the piston rod 42 are provided on the other side of the case 10. The front end of the piston rod 42 is connected to the chain 60 and the lever 61 at the eccentric positions of the rotary plates 31 and 31 '. An initial speed regulating bypass passage 50 having openings 50a and 50b formed therein, and end speed regulating bypass passages having openings 51a and 51b provided in front and rear of the opening 50b. (51) is formed, and the opening (50a) and the opening (51a) by the flow rate adjusting openings 52, 52 'to control the bypass passage flow rate, while being coupled to the piston rod 42 In the piston 41 reciprocating the inside of the cylinder 40, a check valve 4 is formed to block the flow path when the piston is retracted, and a double coil which acts on the rear force After the spring 43 is installed, the cylinder 40 is filled with oil, and reference numeral 11 denotes a shaft support groove, 20 a lid plate, 21 a shaft hole, 32 a flat part, 33 a fixing pin, 45 Is a cap, 70 is a ventilation window rotatably installed around the upper and lower shafts, 71 is a ventilation window frame, 80 is a window frame, 90 is a lock device operated by the fire detection signal (S).

이와같이 구성된 본 고안의 힌지장치는 창틀(80)에 조립하여 사용하는 것으로, 일단 본 고안의 힌지장치를 창틀(80) 중심에 힌지축(30)이 위치하도록 조립한 후 환기창문(70)을 설치하는 것으로서, 그 작용효과를 설명하면 다음과 같다.The hinge device of the present invention configured as described above is used by assembling the window frame 80, and once the hinge device of the present invention is assembled so that the hinge shaft 30 is positioned at the center of the window frame 80, the ventilation window 70 is installed. As it is, the working effect is explained as follows.

우선, 환기창문(70)이 닫혀진 상태에서는 록크장치(90)가 환기창문(70)을 로크하고 있고 힌지장치는 힌지축(30)의 회전판(31), (31')에 체인(60)의 선단부를 고정하고 있는 고정핀(33)의 위치가 플랜지(31), (31')를 평면에서 볼때 제2도와 같이 제3사분면에 위치한 상태에서 힌지축(30)을 체인(60) 및 레버(60')와 피스톤로드(42)를 개재시켜 피스톤(41)에 연결하고 있으며, 이때 피스톤(41)은 이중 스프링(43)을 완전히 압축한 상태에서 이중 스프링(43)의 탄력에 의해 후방으로 밀리려는 힘이 작용하므로 항상 힌지축(30)을 회전시키려는 당기는 힘이 내재된 상태로 환기창문(70)이 닫혀져 있게 된다.First, in the state in which the ventilation window 70 is closed, the lock device 90 locks the ventilation window 70, and the hinge device is connected to the rotary plates 31 and 31 'of the hinge shaft 30 by the chain 60. The hinge shaft 30 is connected to the chain 60 and the lever in a state where the fixing pin 33 holding the tip portion is positioned in the third quadrant as shown in FIG. 2 when the flanges 31 and 31 'are viewed in plan view. 60 ') and the piston rod 42 are connected to the piston 41. At this time, the piston 41 is pushed backward by the elasticity of the double spring 43 while the double spring 43 is fully compressed. Since the acting force acts, the ventilation window 70 is always closed in a state in which a pulling force for rotating the hinge shaft 30 is inherent.

상기와 같이 환기창문(70)이 닫혀진 상태에서 화재가 발생하여 이를 화재 감지기가 감지하면 화재감지신호(S)가 록크장치(90)에 전달되고, 이 신호(S)에 의해 록크장치(90)가 작동되어 환기창문(70)의 록크상태를 해재시키면 환기창문(70)은 힌지장치의 작동에 의해 자동으로 열리게 되는데, 이때의 힌지장치 작동은 상기와 같이 이중스프링(43)의 탄력에 의해 후방으로 밀리려는 피스톤(41)에 의해 힌지축(30)을 당기는 힘이 유지되고 있다가 록킹상태의 해제로 힌지축(30)의 상부 평삭부(32)에 고정되어 있던 환기창문(70)이 무부하 상태가 되면 피스톤(41)은 후방으로 밀리면서 힌지축(30)을 회전시키게 되고, 이에 따라 환기창문(70)이 회동하여 열리게 되는 것이다.When a fire occurs in a state in which the ventilation window 70 is closed as described above, and a fire detector detects this, the fire detection signal S is transmitted to the lock device 90, and the lock device 90 is transmitted by the signal S. Is operated to release the locked state of the ventilation window 70, the ventilation window 70 is automatically opened by the operation of the hinge device, the hinge device operation at this time is the rear by the elasticity of the double spring 43 as described above The force for pulling the hinge shaft 30 by the piston 41 to be pushed by is maintained, but the ventilation window 70 fixed to the upper flat portion 32 of the hinge shaft 30 by the release of the locked state is unloaded. When the piston 41 is pushed to the rear to rotate the hinge shaft 30, accordingly the ventilation window 70 is to be opened to rotate.

이때, 실린더(40) 내부의 피스톤(41)이 후방으로 밀림으로 인하여 피스톤(41)의 후방에 머물고 있던 유체는 비교적 고압으로 형성되면서 실린더(40)의 저부에 형성되어 있던 소직경의 초기속도 조절 바이패스통로(50)를 통해 피스톤(41)의 전방으로 이동되므로 피스톤(41)은 이동되는 유체의 량만큼 후방으로 밀리게 되는 것이며, 이러한 상태로 피스톤(41)이 밀리다가 피스톤(41)이 바이패스통로(50)의 후방개구(50b)를 막게 되면 이 상태에서는 피스톤(41)이 또 다른 말기속도조절 바이패스통로(51)의 전방 개구(51a)를 후방개구(51b) 사이에 위치하게 되므로 유체는 이 바이패스 통로(51)를 통해 피스톤(41) 전방으로 이동하게 되어 피스톤(41)이 후방으로 완전히 밀리면서 힌지축(30)을 회전시켜 환기창문(70)을 자동으로 열어주는 것이다.At this time, due to the piston 41 inside the cylinder 40 is pushed backward, the fluid remaining in the rear of the piston 41 is formed at a relatively high pressure to adjust the initial speed of the small diameter formed at the bottom of the cylinder 40 Since the piston 41 is moved forward of the piston 41 through the bypass passage 50, the piston 41 is pushed backward by the amount of fluid to be moved. In this state, the piston 41 is pushed and the piston 41 is pushed. When the rear opening 50b of the bypass passage 50 is blocked, in this state, the piston 41 positions the front opening 51a of the other terminal speed control bypass passage 51 between the rear opening 51b. Therefore, the fluid is moved to the front of the piston 41 through the bypass passage 51 so that the piston 41 is completely pushed backward and rotates the hinge shaft 30 to automatically open the ventilation window 70. .

여기에서, 피스톤(41)의 후방 진행속도는 초기상태에서는 조금 빠르게 조절구(52)로 조절하고, 말기 상태에서는 초기상태보다 조금 느리게 조절구(52')로 조절하는 것이 바람직하며, 환기창문(70)의 열림각도는 피스톤(41)의 이동거리에 의해 결정되므로 필요에 따라서는 레버(61) 또는 피스톤로드(42)의 적정부위에 스톱퍼를 설치하여 환기창문(70)의 열림각도를 조절할 수 있는 것이다.Here, the rear traveling speed of the piston 41 is adjusted to the adjusting port 52 a little faster in the initial state, and in the terminal state is adjusted to a little slower than the initial state (52 '), the ventilation window ( Since the opening angle of the 70 is determined by the movement distance of the piston 41, the opening angle of the ventilation window 70 can be adjusted by installing a stopper at an appropriate portion of the lever 61 or the piston rod 42 as necessary. It is.

또한, 열려진 창문을 닫고자 할때에는 통상과 같이 닫으면 힌지축(30)이 회전하면서 피스톤(41)을 당기게 되므로 이 힘에 의해 피스톤(51)은 이중 스프링(43)의 탄력을 극복하여 압축시키면서 전진하게 되는데, 이때에는 체크밸브(44)가 모두 개방되므로 신속하고 손쉽게 닫을 수 있으며 완전히 닫히면 록크장치(90)가 환기창문(70)를 록크하여 닫힌 상태가 유지되는 것이다.In addition, when closing the open window as usual, the hinge shaft 30 is rotated to pull the piston 41 while rotating, so by this force the piston 51 overcomes the elasticity of the double spring 43 to move forward In this case, all of the check valves 44 are opened so that they can be closed quickly and easily. When the lock device 90 is completely closed, the lock device 90 locks the ventilation window 70 to maintain the closed state.

이상에서와 같이 본 고안의 힌지장치에 의하면 화재감지신호에 의해 작동되는 록크장치가 설치된 환기창문에 사용할 경우 돌발적인 화재발생시 화재 감지신호에 의해서 록크장치가 해제되면 힌지장치에 의해 환기창문을 자동으로 정숙하게 열어주어 실내에 있는 사람들의 질식사고를 최소한으로 줄일 수 있는 매우 유용한 고안이다.As described above, according to the hinge device of the present invention, when the lock device is operated by the fire detection signal, the ventilation window is automatically released by the hinge device when the lock device is released by the fire detection signal in case of accidental fire. It is a very useful design that can be quietly opened to minimize the suffocation of people indoors.

Claims (1)

케이스(10)의 일측에 회전판(31), (31')을 가진 창문 힌지축(30)이 설치되고, 상기 케이스(10)의 타측에 상기 회전판(31), (31')에 연결된 피스톤로드(42)나 실린더(40)가 설치된 힌지장치에 있어서, 상기 실린더(40)의 전·후방 소정개소에 개구(50a), (50b)가 마련된 초기속도 조절바이패스통로(50)와 개구(51a), (51b)가 마련된 말기속도조절 바이패스통로(51)를 마련하되 상기 바이패스 통로(50), (51)상에 유량조절구(52), (52')를 설치하고, 상기 피스톤로드, (42)의 단부에 형성된 피스톤(41)에는 피스톤 후퇴시 유로를 막아주는 체크밸브(44)를 형성하고, 상기 피스톤(41)의 전방에는 후방으로의 탄발력이 작용되는 코일스프링(43)을 설치하며 상기 실린더(40)의 내부에 오일을 충전시켜서 구성한 건물용 환기창문의 개폐속도 조절장치.A window hinge shaft 30 having rotating plates 31 and 31 'is installed at one side of the case 10, and a piston rod connected to the rotating plates 31 and 31' at the other side of the case 10. In the hinge device provided with the 42 or the cylinder 40, the initial speed regulation bypass passage 50 and the opening 51a provided with openings 50a and 50b at predetermined positions in front and rear of the cylinder 40. ), (B) is provided with a terminal speed control bypass passage 51 provided with flow rate adjusting ports 52 and 52 'on the bypass passages 50 and 51, and the piston rod , The piston 41 formed at the end of the (42) is formed with a check valve 44 to block the flow path when the piston retracts, the front of the piston 41, the coil spring 43 is applied to the resilience force to the rear And installing and adjusting the opening and closing speed of the ventilation window for the building configured by filling the inside of the cylinder (40).
KR2019890002803U 1989-03-13 1989-03-13 Hinge in emergency ventilation window KR920003628Y1 (en)

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KR2019890002803U KR920003628Y1 (en) 1989-03-13 1989-03-13 Hinge in emergency ventilation window

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KR2019890002803U KR920003628Y1 (en) 1989-03-13 1989-03-13 Hinge in emergency ventilation window

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KR900017199U KR900017199U (en) 1990-10-05
KR920003628Y1 true KR920003628Y1 (en) 1992-06-01

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