KR20100004361A - Automatic closing apparatus for fire door - Google Patents
Automatic closing apparatus for fire door Download PDFInfo
- Publication number
- KR20100004361A KR20100004361A KR1020080064485A KR20080064485A KR20100004361A KR 20100004361 A KR20100004361 A KR 20100004361A KR 1020080064485 A KR1020080064485 A KR 1020080064485A KR 20080064485 A KR20080064485 A KR 20080064485A KR 20100004361 A KR20100004361 A KR 20100004361A
- Authority
- KR
- South Korea
- Prior art keywords
- hook
- door
- sliding
- fire door
- holder
- Prior art date
Links
- 239000000779 smoke Substances 0.000 claims abstract description 17
- 238000001514 detection method Methods 0.000 claims abstract description 9
- 230000006835 compression Effects 0.000 claims description 18
- 238000007906 compression Methods 0.000 claims description 18
- 238000003780 insertion Methods 0.000 claims description 8
- 230000037431 insertion Effects 0.000 claims description 8
- 230000004044 response Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 description 6
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
Images
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
- E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
- E05F3/04—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes
- E05F3/10—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes with a spring, other than a torsion spring, and a piston, the axes of which are the same or lie in the same direction
- E05F3/102—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes with a spring, other than a torsion spring, and a piston, the axes of which are the same or lie in the same direction with rack-and-pinion transmission between driving shaft and piston within the closer housing
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
- E05C17/00—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith
- E05C17/02—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means
-
- 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
- E05F15/50—Power-operated mechanisms for wings using fluid-pressure actuators
- E05F15/53—Power-operated mechanisms for wings using fluid-pressure actuators for swinging wings
-
- 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
- E05Y2201/00—Constructional elements; Accessories therefor
- E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
- E05Y2201/218—Holders
- E05Y2201/22—Locks
-
- 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
- E05Y2201/00—Constructional elements; Accessories therefor
- E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
- E05Y2201/23—Actuation thereof
- E05Y2201/232—Actuation thereof by automatically acting means
-
- 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
- E05Y2201/00—Constructional elements; Accessories therefor
- E05Y2201/40—Motors; Magnets; Springs; Weights; Accessories therefor
- E05Y2201/404—Function thereof
- E05Y2201/41—Function thereof for closing
- E05Y2201/412—Function thereof for closing for the final closing movement
-
- 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
- E05Y2201/00—Constructional elements; Accessories therefor
- E05Y2201/40—Motors; Magnets; Springs; Weights; Accessories therefor
- E05Y2201/404—Function thereof
- E05Y2201/418—Function thereof for holding
-
- 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
- E05Y2201/00—Constructional elements; Accessories therefor
- E05Y2201/40—Motors; Magnets; Springs; Weights; Accessories therefor
- E05Y2201/43—Motors
- E05Y2201/448—Fluid motors; Details thereof
-
- 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
- E05Y2201/00—Constructional elements; Accessories therefor
- E05Y2201/60—Suspension or transmission members; Accessories therefor
- E05Y2201/622—Suspension or transmission members elements
- E05Y2201/686—Rods, links
-
- 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
- E05Y2201/00—Constructional elements; Accessories therefor
- E05Y2201/60—Suspension or transmission members; Accessories therefor
- E05Y2201/622—Suspension or transmission members elements
- E05Y2201/71—Toothed gearing
- E05Y2201/722—Racks
-
- 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
- E05Y2600/00—Mounting or coupling arrangements for elements provided for in this subclass
- E05Y2600/10—Adjustable
- E05Y2600/14—Adjustable with position retaining means
-
- 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
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Special Wing (AREA)
Abstract
The present invention discloses a fire door automatic closing device. The present invention has one end connected to the door frame frame through a connecting link has a rotating shaft that is rotated forward and backward by opening and closing the fire door, and the door closer to close the fire door by hydraulic pressure, and electrically connected to the other end of the rotary shaft of the door closer The sliding hook unit reciprocates horizontally in accordance with the opening and closing of the fire door, and is supported to be movable on one side in the moving direction of the sliding hook unit. When the door is opened, the sliding hook unit is locked to move together with the sliding hook unit and act on the smoke detection signal. Sliding door release for releasing the locking hook unit by the lock, and the door release fixing means for fixing the sliding door release moving in accordance with the opening of the fire door to the completed position of the fire door and the entire link except the link With casing attached to fire door .
According to the present invention, all components including the door closer are built in one casing, and the appearance is beautiful, as well as being made of a single body. Will be.
Description
The present invention relates to a fire door that is installed in the entrance or passage of various building structures to prevent the spread of flames and smoke to an adjacent area in the event of a fire, more specifically, consisting of a single body, as well as new, (旣) Installation The fire door automatic closing device is designed to be easily mounted on the fire door to keep the fire door open in normal (non-fire), and to close the fire door quickly in the event of a fire.
In general, various building structures have passages for entry and exit, especially in large buildings such as buildings or apartments where many people reside in the building, and several passageways such as elevators and emergency stairs and / or corridors are provided together. have.
Therefore, in the event of a fire, the flame spreads rapidly through these passages and there is a high possibility of spreading to a large fire disaster, and in fact, many fire accidents occurring in apartments, etc., are leading to a large fire by spreading the flames rapidly through these passages.
As a result, mandatory installation of fire doors that block spaces in order to suppress or delay the spread of fire in case of emergency in the case of large group residential buildings such as buildings and apartments, in particular, the entrance and the boundary of each passage, etc. have.
Such a fire door is fixed to an open state for the convenience of users and is made to close automatically only in the event of a fire. To this end, the fire door is provided with a device for automatically closing the door, and a fixing release means such as a door release operated by a signal of the fire detection means is provided on the wall.
On the other hand, door closer and auto hinge device are mainly used to close the door automatically.They need to install a door release on the wall to fix the fire door in the open state and release it in case of fire. There is a troublesome problem.
In addition, in the case of auto hinge, it has an external advantage because it is built in the door, but it is difficult to install in the pre-installed door, whereas in the case of the door closer, it is easy to install on the new door and the installed door instead of the external disadvantage. Has
Accordingly, in recent years, there are a number of devices that can be easily installed by directly mounting the door to the door closer without installing a fixing release means for fixing the fire door in the open state and releasing it in case of fire.
For example, Korean Patent Registration No. 10-0567769 and Utility Model Registration Nos. 20-0432692 and 20-0410354 can be found, and these technologies are simply the top or door of a door closer that is commonly used. It is installed in the door frame frame separately from the connection link or door closer connecting the closure to the door frame, and still has a disadvantage in that the installation is not only complicated and weak in appearance.
The present invention was devised in view of the above-mentioned conventional problems, and consists of a single body, as well as a new installation, and is easily installed on a pre-installed fire door to keep the fire door stable in an open state (non-fire). The purpose of the present invention is to provide an automatic fire door closing device that can close the fire door quickly in case of fire.
Fire door automatic closing device according to the present invention in order to achieve the above objects, the one end is connected to the door frame frame through a connecting link has a rotating shaft which is rotated forward and backward by the opening and closing of the fire door, closing the fire door by hydraulic Giving door closers; A sliding hook unit which is electrically connected to the other end of the rotating shaft of the door closer and reciprocates horizontally according to opening and closing of the fire door; A sliding door release movably supported on one side of the sliding hook unit in a moving direction and locking the sliding hook unit when the fire door is opened to move together with the sliding hook unit, and releasing the locking of the sliding hook unit by a smoke detection signal; Door release fixing means for fixing the sliding door release moving in accordance with the opening of the fire door to the open completion position of the fire door; And a casing attached to the fire door by embedding the entire component except the connection link.
According to one preferred feature of the present invention, the sliding hook unit has a pinion mounted on the other end of the rotating shaft of the door closer, and a sliding rack disposed parallel to the door closer with the rack gear engaged with the pinion and supported by the guide; At one end of the sliding rack, the hook is provided to protrude so as to face the sliding door release.
According to another preferred feature of the invention, the sliding door release, and the case is guided to the guide means having a hook insertion hole into which the sliding hook is inserted; A hook-type hook holder which is hinge-assembled in the case to lock the sliding hook, and has a hooking jaw at one end and is elastically biased in a direction of releasing the locking of the sliding hook; A holder locker which is hinge-assembled in the case with a catching protrusion elastically caught on the catching jaw of the hook holder and elastically biased so that the catching protrusion contacts the outer circumference of the hook holder; It is provided in the case, and provided with the solenoid which rotates a holder locker in the elastic opposite direction according to the smoke detection signal from the exterior.
According to another preferred feature of the present invention, the door release fixing means is installed in the casing side by side in the moving direction of the sliding door release, a ratchet bed having a plurality of toothed teeth at regular intervals, and movable to the sliding door release And a ratchet which is elastically biased toward the ratchet bed and one end is elastically sandwiched between the teeth of the ratchet bed.
According to the present invention, all the components including the door closer is built in one casing, the appearance is beautiful, as well as made of a single body, as well as new installation as well as a conventional door closer is very easy to install fire doors I can attach it.
In addition, it keeps the fire door open and stable in normal (non-fire), but can close the fire door quickly in case of fire, which can greatly reduce the damage caused by the fire. If necessary, the fire door can be opened and closed easily.
Therefore, the present invention has the effect of greatly contributing to the improvement of the constructability and reliability of the fire door and the ease of use.
Such specific features and other advantages of the present invention will become more apparent from the following description of the preferred embodiments with reference to the accompanying drawings.
1 to 6, the automatic fire door closing device according to the present invention, the door closer 20 to automatically close the fire door (D) in the open state, and the door closer 20 in accordance with the opening and closing of the fire door (D)
The
The door closer 20 is a conventional one widely used for the automatic closing of the swing door. However, only the configuration of the rotating
As is well known, the door closer 20 has an
The
The
The
The
This sliding
The
On the other hand, when the fire door (D) is closed due to the fire, it should not be opened easily even by the wind pressure of the fire zone, preferably, at least one of the two guide blocks (35, 36) to close the fire door (D) The closing and holding means 37 may be further provided to keep it firmly in a closed state.
As shown in FIG. 10, the closing and holding means 37 of the present invention forms a
The
At this time, the
Accordingly, in the state in which the fire door D is opened, the protrusion of the
The sliding
As shown in Figs. 6 to 7C, the
The
The
The first and
That is, the
In addition, the
The
On the other hand, the
The
Although the locking
The
The
Meanwhile,
The door release guide means 56 may be configured in various forms. For example, as shown, two
Meanwhile, as shown in FIGS. 8 and 9, the door release fixing means 59 includes a
The
The lower end of the
Accordingly, the
By the way, for example, if the fire door (D) installed in a specific place is moved to another place or the inevitable opening angle is changed, the
Next, the operation of the automatic fire door closing device according to the present invention configured as described above will be described.
First, the automatic fire
In the state in which the fire door D is closed after the first installation, the sliding
In this case, the place where the
In this state, when the fire door D closed as shown by the virtual line in FIG. 2 is opened, the rotating
At this time, the oil is in the right region of the
At the same time, the sliding
Then, the
When the
At this time, when the
That is, in the door release fixing means 59 of the present invention, the
After the
The movement of the sliding
The embodiment of the present invention is configured to accommodate the opening degree of the fire door (D) to 70 ° ~ 180 ° bar, as shown by the virtual line in Figure 8 in relation to the structure of the building within the opening range It can be fixed simply and accurately to the actual maximum opening degree of the fire door (D) without.
On the other hand, when it is necessary to close the fire door D as necessary during non-fire, if it is closed by applying a force or more than a predetermined force to the fire door D, which is opened and fixed by the
That is, the
At this time, the
Accordingly, the
Of course, at this time the
11 to 13 schematically show another embodiment of the fire door
In this embodiment, in the configuration of the above-described embodiment, the
Hook length adjusting means 70 is provided so as to penetrate the head of the
To this end, the head of the sliding
And the adjusting
The
And the
One end of the
The remaining
The method of adjusting the protruding length of the
First, as shown in FIG. 12, the
In this state, when the adjusting
Then, after adjusting the protruding length of the
Accordingly, the rotation of the
In the embodiment of such a configuration, the fire door D can be fixed in position more accurately in accordance with the opening degree of the fire door D than in the above-described embodiment.
That is, in the above-described embodiment, the opening position of the fire door (D) is determined only by the teeth (60a) of the ratchet bed (60) formed at a predetermined interval, the fixed position of the fire door (D) is the ratchet bed (60) Inevitably depends on the angle corresponding to the pitch of the teeth (60a), in the case of this embodiment, in addition to the fire door (because it is possible to precisely adjust the protruding length of the
On the other hand, Figure 14 schematically shows another embodiment according to the invention, in which the
The
Accordingly, preferably, the battery means 90 for supplying the necessary power to the
1 is a perspective view schematically showing a state in which a fire door automatic closing device according to the present invention is attached to a fire door;
FIG. 2 is a cross-sectional view taken along line II-II of FIG. 1;
Figure 3 is an exploded perspective view of the automatic fire door closing device according to the present invention,
4 is a plan view of the coupled state of FIG.
5 is a cross-sectional view schematically showing a door closer;
6 is an exploded perspective view showing a sliding door release unit of the present invention;
7a to 7c are plan views showing the operating state of the door release,
8 is a cross-sectional view showing a door release fixing means of the present invention;
9 is an enlarged view showing the main portion of the door release fixing means;
10 is a cross-sectional view showing a fire door closing and keeping means of the present invention;
11 is an exploded perspective view showing another embodiment of the present invention;
12 is a cross-sectional view of the coupled state of FIG.
13 is a cross-sectional view taken along the line XIII-XIII of FIG. 12;
14 is a schematic cross-sectional view showing yet another embodiment of the present invention.
<Description of Symbols for Main Parts of Drawings>
10: casing 11: base
12: cover 12a: coupling slot
20: door closer 21: body cylinder
21a: oil chamber 22: piston rack
22a: rack gear 23: rotating shaft
23a, 23b: Pinion 24: Link
30: sliding hook unit 31: sliding rack
31b: ball seat 32: hook
32a:
38: rocking ball 40: sliding door release unit
41:
42a, 42b: Hook insertion hole 43: Hook holder
44c:
44b:
47: adjusting screw 49: holder locker
49a: engaging protrusion 50: release pin
52: solenoid 56: door release guide means
59: door release fixing means 60: ratchet bed
62: ratchet 70: hook length adjusting means
71:
73: spline hole 74: adjustment shaft
75: pinion 76: spline shaft
80: smoke detector 90: battery means
D: Fire door F: Door frame
Claims (11)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020080064485A KR20100004361A (en) | 2008-07-03 | 2008-07-03 | Automatic closing apparatus for fire door |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020080064485A KR20100004361A (en) | 2008-07-03 | 2008-07-03 | Automatic closing apparatus for fire door |
Publications (1)
Publication Number | Publication Date |
---|---|
KR20100004361A true KR20100004361A (en) | 2010-01-13 |
Family
ID=41813943
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020080064485A KR20100004361A (en) | 2008-07-03 | 2008-07-03 | Automatic closing apparatus for fire door |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR20100004361A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103806780A (en) * | 2012-11-11 | 2014-05-21 | 方高亮 | Mucilage glue mounted fixed spring strip door closer |
KR101453211B1 (en) * | 2013-10-11 | 2014-10-22 | 오맹수 | A fire door automatic movement closing equipment |
CN105856002A (en) * | 2016-04-25 | 2016-08-17 | 江苏华阳金属管件有限公司 | Automatic grinding device for straight pipe |
KR20180054405A (en) * | 2016-11-15 | 2018-05-24 | 윤정식 | Fire door self-closing device |
CN109025614A (en) * | 2018-08-16 | 2018-12-18 | 广州铸安机电设备有限公司 | Slide electric door closer |
CN113958219A (en) * | 2021-10-19 | 2022-01-21 | 美创节能科技(湖州)有限公司 | Composite self-locking skylight capable of being opened emergently |
KR20220108926A (en) * | 2021-01-28 | 2022-08-04 | (주)미성이앤씨 | Door automatic closing device |
-
2008
- 2008-07-03 KR KR1020080064485A patent/KR20100004361A/en active IP Right Grant
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103806780A (en) * | 2012-11-11 | 2014-05-21 | 方高亮 | Mucilage glue mounted fixed spring strip door closer |
KR101453211B1 (en) * | 2013-10-11 | 2014-10-22 | 오맹수 | A fire door automatic movement closing equipment |
CN105856002A (en) * | 2016-04-25 | 2016-08-17 | 江苏华阳金属管件有限公司 | Automatic grinding device for straight pipe |
KR20180054405A (en) * | 2016-11-15 | 2018-05-24 | 윤정식 | Fire door self-closing device |
CN109025614A (en) * | 2018-08-16 | 2018-12-18 | 广州铸安机电设备有限公司 | Slide electric door closer |
CN109025614B (en) * | 2018-08-16 | 2024-01-30 | 东莞市明成电子有限公司 | Sliding rail electric door closer |
KR20220108926A (en) * | 2021-01-28 | 2022-08-04 | (주)미성이앤씨 | Door automatic closing device |
CN113958219A (en) * | 2021-10-19 | 2022-01-21 | 美创节能科技(湖州)有限公司 | Composite self-locking skylight capable of being opened emergently |
CN113958219B (en) * | 2021-10-19 | 2022-12-02 | 美创节能科技(湖州)有限公司 | Composite self-locking skylight capable of being opened emergently |
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