WO2010062025A1 - Appareil séparé de fermeture de porte coupe-feu de ferme-porte - Google Patents

Appareil séparé de fermeture de porte coupe-feu de ferme-porte Download PDF

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Publication number
WO2010062025A1
WO2010062025A1 PCT/KR2009/004992 KR2009004992W WO2010062025A1 WO 2010062025 A1 WO2010062025 A1 WO 2010062025A1 KR 2009004992 W KR2009004992 W KR 2009004992W WO 2010062025 A1 WO2010062025 A1 WO 2010062025A1
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WO
WIPO (PCT)
Prior art keywords
door
door check
fire door
shaft
spring
Prior art date
Application number
PCT/KR2009/004992
Other languages
English (en)
Korean (ko)
Inventor
문홍식
Original Assignee
Moon Hong Sik
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Moon Hong Sik filed Critical Moon Hong Sik
Publication of WO2010062025A1 publication Critical patent/WO2010062025A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/60—Power-operated mechanisms for wings using electrical actuators
    • E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
    • E05F15/611—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings
    • E05F15/63—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by swinging arms
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
    • E05F1/08—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings
    • E05F1/10—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance
    • E05F1/1041—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance with a coil spring perpendicular to the pivot axis
    • E05F1/105—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance with a coil spring perpendicular to the pivot axis with a compression spring
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/60—Power-operated mechanisms for wings using electrical actuators
    • E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
    • E05F15/611—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings
    • E05F15/616—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by push-pull mechanisms
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/70—Power-operated mechanisms for wings with automatic actuation
    • E05F15/72—Power-operated mechanisms for wings with automatic actuation responsive to emergency conditions, e.g. fire
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING 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
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13—Type of wing
    • E05Y2900/132—Doors
    • E05Y2900/134—Fire doors

Definitions

  • the present invention relates to a device that is installed on the swing door, in particular the fire door (1) so that the fire door (1) can be automatically closed when entering and exiting, more specifically, it is connected to the door check, but is configured as a separate type, not integrated.
  • the present invention relates to a detachable fire door (1) closing device of a door check, which is easy to manufacture and install and is provided with a sensing means for easy control.
  • the door check is to close the fire door slowly so as to minimize the sound of the fire door hitting the door frame, to prevent the finger from being caught between the fire door and the door frame, and to close the fire door automatically, so that the fire is different in case of fire. It is a device that prevents sticking to.
  • such a door check is to pull the fire door (1) to close using the tension of the cylinder or spring
  • the first step is to adjust the closing speed about half
  • the second step is to adjust the speed from half to full close.
  • the conventional door check has the advantage of automatically closing the door by pulling the fire door, but also has the disadvantage of making the opening difficult.
  • the force of the door check that pulls the fire door as well as the force of the door check that pulls the fire door ie, the tension of the cylinder or the spring, must be opened to open the fire door.
  • the door check of the Korean Utility Model Registration No. 431191 uses an electromagnet, and is equipped with a locker connected to the electromagnet to allow the fire door 1 to be closed when the user wants, in particular, in the event of a fire.
  • a hydraulic door check is provided on a door that rotates about a hinge on one side of the wall so that the other side of the first operating rod, one side of which is fixed to the inner surface of the door, is connected to one side of the second operating rod through the rotating shaft, and
  • the hydraulic cylinder is to prevent the movement selectively by the rocker moving up and down AC power or internal battery power from the outside is supplied directly to the electromagnet through the switch contact point, and to the fire detection sensor through the contact point.
  • the rocker that is, the electromagnet
  • the rocker controls the hydraulic cylinder directly, so that a large capacity electromagnet is needed to overcome the pressure of the hydraulic cylinder, and as the locker is installed through the door check, the confidentiality of the hydraulic door check is required. It is also difficult to do, and there is a problem that frequently occurs.
  • such a device has a problem that the management room or the person who does not know the presence or absence of fire or the opening and closing state of the door.
  • such a device is assembling as well as locker and the like in the manufacturing process of the door check, as well as manufacturability and workability significantly reduced, there is a problem that the entire door check must be replaced in case of failure.
  • the present invention has been made in view of the above-mentioned conventional problems, and an object thereof is, first, to provide a detachable fire door closing device of a door check that is easy to install and manufacture and excellent in workability by being manufactured and installed separately from the door check. .
  • Another object of the present invention is to provide a detachable fire door closing device of a door check having a simple structure and excellent efficiency by intermittent door check by using the spring force of the spring, regardless of the installation position of the closing door device.
  • Still another object of the present invention is to provide a detachable fire door closing device of a door check that allows a user to arbitrarily maintain an opening state of a fire door and automatically close the opened fire door in an emergency such as a fire occurrence.
  • the present invention has a door check spring for elastically supporting the piston in the casing, the gear is formed on the bottom surface of the piston, the door is provided with a driven gear meshing with the gear on the outer periphery of the drive shaft through the casing
  • a check means comprising: a connecting means having a shaft on one side wall of the bracket and having a central shaft connected to the shaft through a center on an opposite side thereof; An electric link for transmitting a rotational force of the door check drive shaft to the shaft rod; A closing means fitted to a central shaft of the connecting means and interlocked with the driving shaft, wherein the stop roll mounted on the vehicle body moves and interrupts rotation of the rotating plate; An elastic adjustment means installed adjacent to the closing means and moving the nut coupled to the screw rod forward and backward according to the rotation of the screw rod; A spring installed between the moving nut of the elasticity adjusting means and the vehicle body of the closing means to push the vehicle body according to the movement of the moving nut; To be configured as; a motor for rotating the screw rod of the
  • the moving nut moves forward along the screw rod, when the distance between the car body and the vehicle body becomes narrow, the elastic force of the spring increases to prevent the rotation plate from rotating the car body. On the contrary, the moving nut moves backward so that the elastic force of the spring moves to the door check spring.
  • the weaker than the elastic force of the door check spring has a technical feature characterized in that the fire door can be closed by pushing the piston.
  • the present invention has a technical feature that can be interlocked by the electric link and the connecting means in a state in which the closing device and the door check is composed of the closing means and the elastic control means and the spring and the motor.
  • the present invention can be conveniently installed according to the position and space of the fire door as the door check and the closed door device is configured separately and each is installed separately.
  • the closing device of the present invention by adjusting the elastic force of the spring by using a moving nut moving by the motor to enable the closing and opening the door is simple in structure and convenient to manufacture.
  • the door door device of the present invention is provided with a connection means for connecting the door check and the closing device, the connection means is an invention excellent in assembling ability to transmit the rotational force of the door check with the correct operation.
  • FIG. 1 is a front view of a fire door showing a state mounted on the present invention
  • Figure 2 is a front view showing a state in which the door closing device and the door check connected to the present invention
  • Figure 3 is a front view showing a part of the invention closing device
  • FIG. 5 is a front sectional view of a connecting means applied to the closing device of the present invention
  • Figure 6 is an exploded perspective view of the connecting means applied to the closing device of the present invention.
  • Figure 7 is an enlarged view of the main part of the closing device of the present invention
  • FIG. 8 is a schematic view for explaining the operation of the closing device of the present invention.
  • Figure 9 is a sectional view showing the inside of the door check to which the present invention the closing device is applied.
  • closing means 220 rotating plate
  • stop roll 264 body
  • connecting means 610 central axis
  • Figure 1 is a front view of the fire door showing a state mounted on the present invention
  • Figure 2 is a front view showing a state in which the door closing device and the present invention is connected
  • Figure 3 is a part of the invention closed door device Front view shown.
  • FIG. 4 is a plan view of the closing device of the present invention
  • Figure 5 is a front sectional view of the connecting means applied to the closing device of the present invention
  • Figure 6 is an exploded perspective view of the connecting means applied to the closing device of the present invention.
  • Figure 7 is an enlarged view of the main portion of the closing device of the present invention
  • Figure 8 is a schematic diagram for explaining the operation of the closing device of the present invention
  • Figure 9 is a cross-sectional view showing the interior of the door check to which the closing device of the present invention is applied. will be.
  • the door check to which the present invention is applied takes the structure as shown in FIG. 9, but it is understood that this is an example and may be applied to a door check having another structure and shape.
  • the closing device of the present invention is configured to separate the door check 10 and the closing device 100, respectively, for example, the door check 10 is a fire door (1), the closing device is the main technology of the present invention is installed in the door frame In principle, it is connected. Of course, you can install the reverse.
  • the door check 10 is basically the same structure as in FIG.
  • a piston 14 is provided inside the casing 12, and the piston 14 is supported by the door check spring 18 to limit movement, but the gear 14a is disposed on the bottom surface of the piston 14.
  • the configuration is equipped.
  • the bottom of the piston (14) is provided with a drive shaft (16), which is provided with a driven gear (16a) to engage the gear on the outer periphery of the drive shaft is to move the piston when the drive shaft rotates.
  • the closing device 100 which can be referred to as the core technology of the present invention, is connected to the door check 10 and controls the rotation of the door check 200, and when the fire occurs by retreating the vehicle body of the closing door 200.
  • connection means 600 of the present invention is to connect the closing device 100 and the door check 10 to enable interworking, which will be described again.
  • the closing means 200 is provided with a rotating plate 220 that is fitted to the central axis 610 of the connecting means 600, which will be described later, gear teeth 222 on both sides or one side of the rotating plate 220 Is formed.
  • gear teeth 222 are protruded radially around the central shaft hole 224 as shown in the figure, and the gear plate 240 is engaged with the gear teeth 222.
  • the gear plate 240 is fixed to the central axis 620 is configured to interlock with the central axis, teeth 242 meshing with the gear teeth 222 is formed on the front to rotate the rotational force of the central axis 610 It serves to deliver to the rotating plate (220).
  • the gear plate 240 serves to cushion the mechanical shock that may occur by directly fixing the rotating plate 220 to the central axis 620.
  • the locking jaw 226 protrudes outwardly, and the locking jaw 226 is formed in a "F" shape as shown in the figure, and the rotation is caught by the stop roll 260 which the horizontal plane will be described later.
  • the stop roll 260 is installed and moved inside the vehicle body 264 having a " ⁇ " shape, and an auxiliary roll 262 is provided behind the vehicle body 264.
  • a rotary shaft 266 penetrating the vehicle body is formed in each of the front and rear of the vehicle body 264, and two rolls, that is, a stop roll 260 on the front side, and an auxiliary roll 262 on the rear side, respectively. In this configuration, four rolls are provided in one vehicle body 264.
  • this configuration is one example, and may be less than the actual four or as many as six, eight.
  • the vehicle body 264 provided with a roll moves along the guide space 282 penetrating the center portion of the guide body 280, and the guide body 280 is moved to the base plate 20 of the door check 10. It is a fixed installation.
  • the back of the vehicle body 264 is provided with a support plate 268, the spring 500 which will be described later to the support plate 268 is configured to move elastically.
  • the elastic adjustment means 300 is connected to the motor 400 to rotate and move the moving nut 320 forward and backward and to control the door check by adjusting the elasticity of the spring 500, the screw rod 310, Moving nut 320 and the adjusting body 330 is installed.
  • the adjuster 330 is fixed to the base plate 20 similarly to the light fixture 280, and provided with a moving space 332 penetrating the center portion, the moving nut 320 is moved forward and backward along this space. This is the configuration that allows it.
  • the screw rod 310 is connected to the motor to rotate and move the screw coupled to the moving nut, the moving nut 320 is formed in a substantially square shape to move without rotating with the screw rod.
  • the movement space 332 is also the same shape as the movement nut.
  • Sensing means 700 are installed on each of the front and rear sides of the upper and lower plates of the adjusting body 330.
  • the sensing means 700 includes a front side micro switch 710 which is installed adjacent to the rotating plate 220, and the adjusting body 330. It consists of a rear micro switch 720 is installed on the upper surface.
  • a long hole 334 is formed in the center of the upper plate of the adjuster 330, the upper surface of the moving nut 320 is provided with a touch rod 322 which is installed through the long hole 334 with the movement of the moving nut The touch rod 322 is moved to inform the position by touching the sensing means, that is, the rear micro switch.
  • the motor 400 is configured to move the moving nut by rotating the screw rod 310 by the forward and reverse rotation motor, the spring 500 is installed between the moving nut 320 and the support plate 268 and the elastic I support it.
  • the connecting means 600 which enables separate installation of the closing device and the door check, includes a central shaft 610, a shaft rod 620, a bracket 630, and a bearing part 640.
  • the bracket 630 has a " ⁇ " shape having both side walls 632 and a bottom 634, and holes 636 in which a central axis and a bearing part are fitted are formed in each of the side walls 632, and a base is formed at the bottom.
  • the fixing bolt 634a is formed to be fixed to the plate 20.
  • the rotating plate 220 and the gear plate 240 is located between both side walls 632 of the bracket, the central shaft 610 is installed through these, between the head 612 of the central shaft and the rotating plate 220
  • a bearing part 640 is installed in the bushing or a bearing to smoothly rotate the central shaft 220, but a touch plate 638 is provided between the bearing part 640 and the inner surface of the head 316.
  • the front micro switch of the sensing means 700 is touched.
  • the shaft rod 620 is installed through the hole of the right wall 632 of the bracket 630, as shown in the drawing, the stepped portion 622 is provided to prevent the separation and to support the gear plate against each other. .
  • a female screw portion 624 is formed in the center of the stepped portion 622 in the longitudinal direction so that the central axis can be assembled thereto.
  • the central shaft 610 is a male screw portion formed at the end by sequentially passing through the touch plate 638 and the bearing portion 640, the rotating plate 220 and the gear plate 240 from the left wall in the figure 614 is fastened to the female threaded portion 624 of the shaft 620 is assembled.
  • the shaft 620 and the drive shaft 16 of the door check 10 is connected by an electric link 650
  • the electric link 650 is the main link 652 and the drive shaft connected to the shaft 620
  • An auxiliary link 654 is connected to the (16), the auxiliary link 654 is configured in the form of a double pipe to enable the length adjustment.
  • Reference numeral 800 which is not described in the drawings, controls the forward and reverse rotation of the motor as a control unit, and the control unit may be associated with a guard room and a management room of each building.
  • the closed door device 100 of the present invention is fixed to the door frame of the fire door (1) as shown in the drawing, the door check 10 is a fire door in the state connected by the electric link 650 in a state fixed to the fire door (1)
  • the electric link 650 rotates the drive shaft 16 of the door check and the shaft bar 620 of the connecting means.
  • the main link 652 and the auxiliary link 654 are opened, and the main link 652 rotates the drive shaft 16 to rotate the piston 14.
  • Moving the auxiliary link 654 rotates the shaft 620 to rotate the central axis 610 connected thereto.
  • this state that is, the movement nut 320 of the resilient adjustment means 300 of the closing device 100 in the usual state is located in the rear, the space between the support plate 268 and the state of the spring 500 for supporting them The elastic force is weakened.
  • the rotating plate 220 is rotated while the locking jaw 226 pushes the stop roll 260, which is because the locking jaw pushes the stop roll because the door check spring 18 is stronger than the spring 500 of the closing device. I can make it.
  • the touch plate 638 is also rotated to touch the front side micro switch 710 so that the fire door 1 is closed.
  • the following is a process to maintain the opening of the fire door (1).
  • the control unit 800 When the person or guard connects the fire door (1) to the guard room, the management room in the open state or operates the control panel installed separately, the control unit 800 installed here rotates the motor 400 so that the screw rod 310 connected thereto is rotated. do.
  • the body 264 integrally formed with the support plate 268 starts to move, and the roll ie the stop roll 260 and the auxiliary roll 262 roll along the guide space 282, and the stop roll 260 is horizontal to the locking jaw. It is located at.
  • the elastic force of the spring 500 is strengthened, and the force is stronger than that of the door check spring 18 so that the rotating plate cannot be rotated so that the open state of the fire door 1 is maintained.
  • the touch rod 322 touches the micro switch 720 and at the same time the motor 400 stops.
  • the controller 800 When a fire occurs in the state in which the fire door 1 is opened, an alarm sounds, and the controller 800 outputs a reverse rotation signal of the motor 400 according to the alarm sound or according to an input signal of a guard or an occupant.
  • the moving nut 320 moves to the rear side and opens a distance between the supporting plates, thereby gradually decreasing the elastic force of the spring, thereby increasing the elastic force of the door check spring 18.
  • the rod 16 rotates to rotate the rotating plate 220 while pushing the stop roll 260 as described above so that the fire door 1 is closed.

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  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Special Wing (AREA)
  • Power-Operated Mechanisms For Wings (AREA)

Abstract

L'invention concerne un appareil séparé de fermeture de porte coupe-feu opérant en association avec un ferme-porte, mais non partie intégrante du ferme-porte et en étant séparé pour en faciliter la fabrication et l'installation. Ledit appareil comprend un moyen de détection facilitant la commande. et un écrou mobile qui en se déplaçant vers l'avant le long d'une tige filetée réduit l'espace entre l'écrou et un boîtier, augmentant ainsi la force élastique d'un ressort et permettant à un disque d'empêcher la rotation du boîtier, et qui contraire, en se déplaçant vers l'arrière, rend la force élastique du ressort inférieure à celle du ressort du ferme-porte et pousse un piston qui ferme la porte coupe-feu.
PCT/KR2009/004992 2008-11-27 2009-09-04 Appareil séparé de fermeture de porte coupe-feu de ferme-porte WO2010062025A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020080118762A KR100899783B1 (ko) 2008-11-27 2008-11-27 도어체크의 분리형 방화문 폐문장치
KR10-2008-0118762 2008-11-27

Publications (1)

Publication Number Publication Date
WO2010062025A1 true WO2010062025A1 (fr) 2010-06-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2009/004992 WO2010062025A1 (fr) 2008-11-27 2009-09-04 Appareil séparé de fermeture de porte coupe-feu de ferme-porte

Country Status (2)

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KR (1) KR100899783B1 (fr)
WO (1) WO2010062025A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2886767A1 (fr) * 2013-12-17 2015-06-24 GEZE GmbH Dispositif de fermeture de porte
CN107327241A (zh) * 2017-08-11 2017-11-07 上海冉能自动化科技有限公司 闭门装置
CN107435477A (zh) * 2017-09-07 2017-12-05 丽水市神飞利益保安用品有限公司 电控液压闭门器
CN108625750A (zh) * 2018-05-18 2018-10-09 郑州金特莱电子有限公司 一种用于监控防火门的全自动开闭门器
CN108798342A (zh) * 2018-05-18 2018-11-13 郑州金特莱电子有限公司 一种垂直式监控闭门器
CN112854951A (zh) * 2021-01-11 2021-05-28 江苏荣夏安全科技有限公司 一种闭门器滑槽结构、防爆型闭门器及常开式防火门
CN113107300A (zh) * 2021-05-20 2021-07-13 深圳市泛海三江电子股份有限公司 一种电动闭门器自动限位单元

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101416074B1 (ko) 2013-02-20 2014-07-07 박준우 소조립 모듈별 착탈 가능한 구조를 갖는 창문 개폐 장치
WO2024090621A1 (fr) * 2022-10-28 2024-05-02 엘지전자 주식회사 Appareil d'ouverture/fermeture automatique de porte

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KR200331691Y1 (ko) * 2003-08-13 2003-11-01 김진학 방화문용 도어 클로저 장치
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KR100823138B1 (ko) * 2007-04-06 2008-04-21 (주) 아이레보 금강씨에스 도어 스토퍼
KR20080093363A (ko) * 2007-04-16 2008-10-21 신정훈 Dc모터의 제동저항을 이용한 멀티 도어록

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KR20040034308A (ko) * 2002-10-15 2004-04-28 조선제 방화문용 유압식 힌지
JP2005016128A (ja) * 2003-06-25 2005-01-20 Nippon Door Check Mfg Corp 開扉補助装置付ドアクローザ及びドアクローザの開扉補助方法
KR200331691Y1 (ko) * 2003-08-13 2003-11-01 김진학 방화문용 도어 클로저 장치
KR100823138B1 (ko) * 2007-04-06 2008-04-21 (주) 아이레보 금강씨에스 도어 스토퍼
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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2886767A1 (fr) * 2013-12-17 2015-06-24 GEZE GmbH Dispositif de fermeture de porte
CN104746986A (zh) * 2013-12-17 2015-07-01 盖慈有限公司 闭门单元
CN107327241A (zh) * 2017-08-11 2017-11-07 上海冉能自动化科技有限公司 闭门装置
CN107435477A (zh) * 2017-09-07 2017-12-05 丽水市神飞利益保安用品有限公司 电控液压闭门器
CN108625750A (zh) * 2018-05-18 2018-10-09 郑州金特莱电子有限公司 一种用于监控防火门的全自动开闭门器
CN108798342A (zh) * 2018-05-18 2018-11-13 郑州金特莱电子有限公司 一种垂直式监控闭门器
CN108625750B (zh) * 2018-05-18 2023-06-27 郑州金特莱电子有限公司 一种用于监控防火门的全自动开闭门器
CN108798342B (zh) * 2018-05-18 2024-04-02 郑州金特莱电子有限公司 一种垂直式监控闭门器
CN112854951A (zh) * 2021-01-11 2021-05-28 江苏荣夏安全科技有限公司 一种闭门器滑槽结构、防爆型闭门器及常开式防火门
CN112854951B (zh) * 2021-01-11 2022-05-17 江苏荣夏安全科技有限公司 一种闭门器滑槽结构、防爆型闭门器及常开式防火门
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