CN205605023U - Fire door is prevented to normal close with door closer - Google Patents
Fire door is prevented to normal close with door closer Download PDFInfo
- Publication number
- CN205605023U CN205605023U CN201620356486.7U CN201620356486U CN205605023U CN 205605023 U CN205605023 U CN 205605023U CN 201620356486 U CN201620356486 U CN 201620356486U CN 205605023 U CN205605023 U CN 205605023U
- Authority
- CN
- China
- Prior art keywords
- door
- connector
- bearing pin
- fire resistant
- rope
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
Landscapes
- Special Wing (AREA)
Abstract
The utility model discloses a fire door is prevented to normal close with door closer belongs to the fire door is prevented to normal close with door closer among the field of doors, and its aim at provides a fire door is prevented to normal close with door closer, and this installation component sets up the hookup location department between door plant and door frame, need not to prop up and establishes outside the door frame, can not improve the security performance of preventing fire door to pedestrian's the current obstacle that leads to the fact. Its technical scheme does: including door frame and door plant, door frame and door plant pass through installation component and connect, the door closer is installed on the door frame top, installation component is including round pin axle, and the round pin off -axial rotates the cover and is equipped with the second connecting piece, and the upper and lower both sides of second connecting piece are provided with first connecting piece, two sets of first connecting pieces respectively with the both ends fixed connection of round pin axle, the cavity has been offered to the inside of second connecting piece, is provided with reset structure in the cavity. The utility model is suitable for a prevent fire door.
Description
Technical field
This utility model belongs to window technology field, relates to the fire resistant doorsets of a kind of normally closed type.
Background technology
Fire resistant doorsets refer to meet within a certain period of time the door that fire stability, integrity and thermal insulation require, it be located between fire compartment, emergency staircase, vertical shaft etc. have the fire separation thing of certain fire resistance.Fire resistant doorsets, in addition to the effect with common door, have more and stop fire spreading and the effect of flue gas diffusion, can stop spreading of the intensity of a fire within a certain period of time, it is ensured that evacuating personnel.
Owing to the Main Function of fire resistant doorsets is to stop fire spreading and flue gas diffusion, thus fire resistant doorsets need to remain off for a long time.The long-time closedown of fire resistant doorsets to be realized, thus it is typically employed on fire resistant doorsets installation fireproof door closer or setting allows fire resistant doorsets can be automatically switched off the door closer-holder of door leaf when fire occurs.
The utility model patent of Application No. 200920139077.1 discloses a kind of normally-open normally-close dual-purpose type fire resistant doorsets, these fire resistant doorsets include fire-proof door leaf, fireproof door frame, the spring device for closing door being connected between fire-proof door leaf and fireproof door frame, this fire-proof door leaf is provided with a knocker, the body of wall that this fire-proof door leaf closes on is provided with an electromagnetic switch, this electromagnetic switch is provided with the door lock hole suitable with this knocker, and this electromagnetic switch connects a touch controller.By setting up electromagnetic switch on the normally closed fire resistant doorsets be provided with door closer and knocker is provided with the normally closed fire resistant doorsets of door closer and is in opening-wide state at ordinary times, it is that the ventilation of fire-fighting step ladder, daylighting are preferable；And connecting in electromagnetic switch and have a touch controller, when breaking out of fire, this goes out air can make electromagnetic switch disconnect, and fire resistant doorsets close under the effect of spring device for closing door automatically, play fireproofing function.
The utility model of Application No. 201520570169.0 also discloses that a kind of steel wooden heat-insulating fireproof door, these fire resistant doorsets include door closer, hinge, door-plate, fireproof door frame, flame resistant glass, door lock, handle, fireprotection layer, steel skeleton, PLASTIC LAMINATED, veneered plywood, thermal insulation layer, anti-plume, steel interface, aluminum wool net and door closure, door closer is arranged on fireproof door frame top, and fireproof door frame side is by hinge and door-plate compact siro spinning technology；Door-plate surface configuration has flame resistant glass and door lock, and door lock is arranged on the side of door-plate, door-plate surface is provided with handle door-plate surface configuration veneered plywood, and veneered plywood is internally provided with fireprotection layer, fireprotection layer is arranged at fire shield surface and is provided with anti-plume between PLASTIC LAMINATED and fireproof door frame, arranges thermal insulation layer inside door-plate, and aluminum wool net is filled in steel skeleton inside and forms thermal insulation layer, door-plate is internally provided with firm interface and door closure, and door closure is between firm interface.During use, the once breaking out of fire of normally opened fire resistant doorsets, can realize being automatically switched off by coordinated control system, be effectively guaranteed fire resistant doorsets reliable closedown in a fire, thus reach it every cigarette, the application effect of back-fire relief.Simply the door closer of normally closed fire resistant doorsets is replaced with the normally opened fire prevention automatic opener with automatic fire alarm coordinated signals, fire resistant doorsets freely can be opened 180 degree, and close smoothly, the thorough drawback changing normally closed fireproof door closer maximum unlatching 90 degree and make troubles to user.
In conjunction with above-mentioned two patent documentations, existing fire resistant doorsets are all will to be connected between door with doorframe by hinge, after door is opened, are resetted by door by the elastic construction of hinge, close by door closer on doorframe by door the most again, it is achieved normally closed effect.But, in prior art, it is all to prop up to be located at outside doorframe for connecting the hinge of door and doorframe, passer-by is easily caused personal injury by this hinge so that the security performance of fire resistant doorsets is relatively low.
Summary of the invention
The purpose of this utility model is to provide a kind of normally closed fire resistant doorsets being provided with door closer, at the link position that the mounting assembly of these normally closed fire resistant doorsets being provided with door closer is arranged between door-plate and doorframe, it is located at outside doorframe without, the security performance of fire resistant doorsets to the current obstacle that causes of pedestrian, will not be improved.
For achieving the above object, the technical solution of the utility model is:
A kind of normally closed fire resistant doorsets being provided with door closer, including doorframe and door-plate, described doorframe and door-plate are connected by mounting assembly；Described doorframe top is provided with door closer, described door closer includes slide unit assembly, hydraulic assembly and straight beam, described straight beam one end coordinates installation with the slide of slide unit assembly, the other end of described straight beam coordinates installation with hydraulic assembly, described hydraulic assembly installed in front has door-plate mounting seat, described door-plate mounting seat coordinates installation with door-plate top, and the slide rail of described slide unit assembly coordinates installation with doorframe；Mounting assembly includes bearing pin, and the outer turning set of described bearing pin is provided with the second connector being connected on door-plate, and the both sides up and down of described second connector are provided with the first connector being connected on doorframe, and two group of first connector is fixed with the two ends of bearing pin respectively and be connected；The inside of described second connector offers cavity, is provided with resetting structure in described cavity.
As preferably, the cavity of the inside of described second connector is equipped with resetting structure in arranging at least two, and each cavity.
As preferably, described resetting structure includes elastic reset rope, demarcation strip, back-moving spring and rope seat, cavity is divided into rotation chamber and compression chamber by described demarcation strip, described back-moving spring and rope seat are respectively positioned on compression chamber, the demarcation strip contact of described back-moving spring one end, described rope seat is installed on the other end of back-moving spring, one end of described elastic reset rope is connected to rotate on the bearing pin of chamber, and the other end of described elastic reset rope walks around bearing pin, successively through being connected in stretching into compression chamber after the through hole on demarcation strip and with rope seat.
As preferably, described door-plate includes that two-layer lumber layer, the outer surface of described lumber layer have fireproof coating layer, is provided with two-layer flame-retardant layer between described lumber layer；Described flame-retardant layer includes Margarita rock stratum and the asbestos layer inwardly set gradually from two outer surfaces, and position, described Margarita rock stratum perlite abatvoix, described asbestos layer is asbestos board.
Compared with prior art, the beneficial effects of the utility model are:
In this utility model, doorframe and door-plate are connected by mounting assembly, first connector of mounting assembly is connected on doorframe, second connector of mounting assembly is connected on door-plate, first connector and the second connector are connected by bearing pin, the first connector and the second connector is made mutually to rotate, it is achieved being turned on and off of fire resistant doorsets；The habitual abortion assembly of the door closer on doorframe top is used in combination with shaft coupling by screw mandrel and is driven by motor, the power produced is bigger, it is attached with door-plate by door-plate mounting seat on front side of hydraulic assembly, it is being connected with slide unit assembly with the slide cooperation of habitual abortion assembly by straight beam, by slide unit assembly and hydraulic assembly with the use of, after hydraulic assembly opens a crack between a door and its frame, fire resistant doorsets can directly be opened by slide unit assembly, improves the speed that fire resistant doorsets are closed in bigger degree；Arranging cavity inside the second connector, arrange resetting structure in cavity, by this resetting structure, after fire resistant doorsets are opened under the effect of resetting structure, fire resistant doorsets can carry out resetting and closing fire resistant doorsets automatically；Due at the link position that this mounting assembly is installed between door-plate and doorframe, and it is not installed on outside door-plate or doorframe, the security performance of fire resistant doorsets to the current obstacle that causes of pedestrian, will not be improved.This resetting structure is made up of elastic reset rope, demarcation strip, back-moving spring and rope seat, elastic reset rope one end is connected on bearing pin, the elastic reset rope other end is connected with rope seat after taking over bearing pin, (fire resistant doorsets are i.e. opened) after bearing pin or the second connector turn an angle, increase around the elastic reset rope being connected on bearing pin, seat compression reseting spring of restricting；After acting on the active force disappearance on door-plate, back-moving spring recovers deformation, (i.e. closes fire resistant doorsets) after bearing pin or the second connector rotate backward certain angle；Owing to this resetting structure is arranged on inside mounting assembly, will not directly contact with outside walking, thus be prevented effectively from the current obstacle caused to pedestrian, it is to avoid the personal injury that pedestrian is caused, improve the security performance of fire resistant doorsets.This door-plate is made up of fireproof coating layer, lumber layer, Margarita rock stratum and asbestos layer, and Margarita rock stratum has the features such as chemical stability is good, use temperature range is wide, fire prevention, sound-absorbing, can play fireproof effect, moreover it is possible to play the effect eliminating sound；Asbestos layer has stronger tension stress, it is possible to bear the temperature of about 1400 degree, has the effect of insulation, thermal insulation, sound insulation.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of mounting assembly in this utility model；
Fig. 3 is the sectional view of mounting assembly in this utility model；
Fig. 4 is the A-A sectional view of Fig. 3；
Fig. 5 is the structural representation after bearing pin or the second connector turn an angle in Fig. 4；
Fig. 6 is the structural representation of door-plate in this utility model；
Fig. 7 is the structural representation of door closer in this utility model；
Wherein, reference is: 1 slide unit assembly, 2 hydraulic assembly, 3 straight beams, 4 slides, 5 door-plate mounting seats, 6 motors, 7 slide rails, 8 shaft couplings, 10 first connectors, 20 second connectors, 30 bearing pins, 40 cavitys, 50 resetting structures, 11 mounting assembly, 12 door closers, 13 door-plates, 14 doorframes, 41 rotation chambers, 42 compression chamber, 51 elastic reset ropes, 52 demarcation strips, 53 through holes, 54 back-moving springs, 55 rope seat, 131 fireproof coating layers, 132 lumber layers, 133 Margarita rock stratum, 134 asbestos layers.
Detailed description of the invention
Below in conjunction with the accompanying drawings, this utility model is described further:
Embodiment one
A kind of normally closed fire resistant doorsets being provided with door closer, it includes doorframe 14 and door-plate 13, and doorframe 14 and door-plate 13 are connected by mounting assembly 11, by mounting assembly 11 can make door-plate 13 on doorframe 14 freely rotatable, it is achieved being turned on and off of fire resistant doorsets.On doorframe 14 top, door closer 12 is installed, this door closer 12 includes slide unit assembly 1, hydraulic assembly 2 and straight beam 3, straight beam 3 one end coordinates installation with the slide 4 of slide unit assembly 1, the other end of straight beam 3 coordinates installation with hydraulic assembly 2, hydraulic assembly 2 installed in front has door-plate mounting seat 5, door-plate 13 top of door-plate mounting seat more than 5 fire resistant doorsets coordinates installs, and habitual abortion assembly 2 installed in front has door-plate mounting seat 5, door-plate mounting seat 5 to coordinate installation with door-plate 13 top of fire resistant doorsets.The slide rail 7 of slide unit assembly 1 coordinates installation with doorframe 14.Slide unit assembly 1 and hydraulic assembly 2 are installed on door-plate 13 has shaped steel to be directly prepared near doorframe 14 avris, straight beam, and the screw mandrel of slide unit assembly 1 coordinates installation by shaft coupling 8 with motor 6.This mounting assembly 11 includes the first connector the 10, second connector 20 and bearing pin 30, and on the second connector 20, the short transverse along the second connector 20 offers the hole for bearing pin 30, and bearing pin 30 is set in the hole of the second connector 20, and
Second connector 20 can be freely rotatable around the axis of bearing pin 30 on bearing pin 30.After bearing pin 30 is set in the hole of the second connector 20, the two ends of bearing pin 30 pass the second connector 20.First connector 10 is two groups, and two group of first connector 10 is positioned at the two ends up and down of bearing pin 30, and two group of first connector 10 is fixed with the two ends of bearing pin 30 respectively and be connected.The inside of the second connector 20 offers cavity 40, and is provided with resetting structure 50 in the cavity 40 of the second connector 20.
First connector 10 is connected on doorframe 14, and the second connector 20 is connected on door-plate 13, and the first connector 10 is connected by bearing pin 30 with the second connector 20, makes the first connector 10 can mutually rotate with the second connector 20, it is achieved being turned on and off of fire resistant doorsets；Arranging cavity 40 inside the second connector 20, arrange resetting structure 50 in cavity 40, by this resetting structure 50, after fire resistant doorsets are opened under the effect of resetting structure 50, fire resistant doorsets can carry out resetting and closing fire resistant doorsets automatically；Owing to this mounting assembly is installed at the link position between door-plate 13 and doorframe 14, and it is not installed on outside door-plate 13 or doorframe 14, the security performance of fire resistant doorsets to the current obstacle that causes of pedestrian, will not be improved.
Embodiment two
On the basis of embodiment one, the cavity 40 of the inside of the second connector 20 arranges at least two, and multiple cavitys 40 are arranged along the short transverse of the second connector 20, and are equipped with resetting structure 50 in each cavity 40.
Owing to arranging many group resetting structures 50 between the second connector 20 and bearing pin 30, many group resetting structures 50 can improve the reset response between the second connector 20 and bearing pin 30.
Embodiment three
On the basis of embodiment one or embodiment two, this resetting structure 50 includes elastic reset rope 51, demarcation strip 52, back-moving spring 54 and rope seat 55, and cavity 40 in demarcation strip 52 is arranged at the cavity 40 of the second connector 20 and is divided into rotation chamber 41 and 42 two chambers of compression chamber.Bearing pin 30 is through the rotation chamber 41 on the second connector 20, and part bearing pin 30 is positioned at rotation chamber 41.Back-moving spring 54 and rope seat 55 are arranged in compression chamber 42, and one end of back-moving spring 54 is attached on demarcation strip 52, and the other end of back-moving spring 54 is connected with rope seat 55.One end of elastic reset rope 51 is connected to rotate on the bearing pin 30 in chamber 41, and rotates with bearing pin 30；When bearing pin 30 rotates, elastic reset rope 51 will be wrapped on bearing pin 30 or be separated from from bearing pin 30；The other end of elastic reset rope 51 is connected with rope seat 55 after sequentially passing through the center of the through hole 53 on demarcation strip 52, back-moving spring 54.
When External Force Acting opens fire resistant doorsets on fire resistant doorsets, the second connector 20 rotates around bearing pin 30, and the length that elastic reset rope 51 is wrapped on bearing pin 30 increases, seat 55 compression reseting spring 54 of restricting, it is achieved the unlatching of fire resistant doorsets；After the external force acted on fire resistant doorsets disappears, back-moving spring 54 recovers deformation, and the second connector 20 rotates backward around bearing pin 30, and the length being wrapped on bearing pin 30 reduces, it is achieved the closedown of fire resistant doorsets.
This resetting structure 50 is made up of elastic reset rope 51, demarcation strip 52, back-moving spring 54 and rope seat 55, elastic reset rope 51 one end is connected on bearing pin 30, elastic reset rope 51 other end is connected with rope seat 55 after taking over bearing pin 30, after bearing pin 30 or the second connector 20 turn an angle (i.e. opening fire resistant doorsets), increase around the elastic reset rope 51 being connected on bearing pin 30, seat 55 compression reseting spring 54 of restricting；Acting on after active force on door-plate 13 disappears, back-moving spring 54 recovers deformation, bearing pin 30 or the second connector 20 rotate backward certain angle after (i.e. closing fire resistant doorsets)；Owing to this resetting structure 50 is arranged on inside mounting assembly, will not directly contact with outside walking, thus be prevented effectively from the current obstacle caused to pedestrian, it is to avoid the personal injury that pedestrian is caused, improve the security performance of fire resistant doorsets.
Embodiment four
On the basis of above-described embodiment, door-plate 13 includes that two-layer lumber layer 132, the outer surface of lumber layer 132 have fireproof coating layer 131, is provided with two-layer flame-retardant layer between lumber layer 132.Flame-retardant layer includes Margarita rock stratum 133 and the asbestos layer 134 inwardly set gradually from two outer surfaces, 133, Margarita rock stratum perlite abatvoix, and asbestos layer 134 is asbestos board.
Claims (6)
1. the normally closed fire resistant doorsets being provided with door closer, it is characterised in that: include that doorframe (14) and door-plate (13), described doorframe (14) and door-plate (13) are connected by mounting assembly (11)；Described doorframe (14) top is provided with door closer (12), described door closer (12) includes slide unit assembly (1), hydraulic assembly (2) and straight beam (3), described straight beam (3) one end coordinates installation with the slide (4) of slide unit assembly (1), the other end of described straight beam (3) coordinates installation with hydraulic assembly (2), described hydraulic assembly (2) installed in front has door-plate mounting seat (5), described door-plate mounting seat (5) coordinates installation with door-plate (13) top, and the slide rail of described slide unit assembly (1) coordinates installation with doorframe (14)；Described mounting assembly (11) includes bearing pin (30), described bearing pin (30) outer turning set is provided with the second connector (20) being connected on door-plate (13), the both sides up and down of described second connector (20) are provided with the first connector (10) being connected on doorframe (14), and two group of first connector (10) is fixed with the two ends of bearing pin (30) respectively and be connected；The inside of described second connector (20) offers cavity (40), is provided with resetting structure (50) in described cavity (40).
A kind of normally closed fire resistant doorsets being provided with door closer, it is characterised in that: the cavity (40) of the inside of described second connector (20) is equipped with resetting structure (50) in arranging at least two, and each cavity (40).
nullA kind of normally closed fire resistant doorsets being provided with door closer，It is characterized in that: described resetting structure (50) includes elastic reset rope (51)、Demarcation strip (52)、Back-moving spring (54) and rope seat (55)，Cavity (40) is divided into rotation chamber (41) and compression chamber (42) by described demarcation strip (52)，Described back-moving spring (54) and rope seat (55) are respectively positioned on compression chamber (42)，Described back-moving spring (54) one end demarcation strip (52) contacts，Described rope seat (55) is installed on the other end of back-moving spring (54)，One end of described elastic reset rope (51) is connected to rotate on the bearing pin (30) of chamber (41)，The other end of described elastic reset rope (51) walks around bearing pin (30) successively、It is connected in stretching into compression chamber (42) after the through hole (53) on demarcation strip (52) and with rope seat (55).
nullA kind of normally closed fire resistant doorsets being provided with door closer，It is characterized in that: described resetting structure (50) includes elastic reset rope (51)、Demarcation strip (52)、Back-moving spring (54) and rope seat (55)，Cavity (4) is divided into rotation chamber (41) and compression chamber (42) by described demarcation strip (52)，Described back-moving spring (54) and rope seat (55) are respectively positioned on compression chamber (42)，Described back-moving spring (54) one end demarcation strip (52) contacts，(55 are installed on the other end of back-moving spring (54) described rope seat，One end of described elastic reset rope (51) is connected to rotate on the bearing pin (30) of chamber (41)，The other end of described elastic reset rope (51) walks around bearing pin (30) successively、It is connected in stretching into compression chamber (42) after the through hole (53) on demarcation strip (52) and with rope seat (55).
5. a kind of normally closed fire resistant doorsets being provided with door closer as according to any one of claim 1-4, it is characterised in that: also include that door closer (12), described door closer (12) are installed on doorframe (14) top.
A kind of normally closed fire resistant doorsets being provided with door closer, it is characterized in that: described door-plate (13) includes two-layer lumber layer (132), the outer surface of described lumber layer (132) has fireproof coating layer (131), described lumber layer to be provided with two-layer flame-retardant layer between (132)；Described flame-retardant layer includes that described Margarita rock stratum (133) position perlite abatvoix, described asbestos layer (134) is asbestos board from the Margarita rock stratum (133) that two outer surfaces inwardly set gradually and asbestos layer (134).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620356486.7U CN205605023U (en) | 2016-04-26 | 2016-04-26 | Fire door is prevented to normal close with door closer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620356486.7U CN205605023U (en) | 2016-04-26 | 2016-04-26 | Fire door is prevented to normal close with door closer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205605023U true CN205605023U (en) | 2016-09-28 |
Family
ID=56970296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620356486.7U Expired - Fee Related CN205605023U (en) | 2016-04-26 | 2016-04-26 | Fire door is prevented to normal close with door closer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205605023U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761288A (en) * | 2016-12-17 | 2017-05-31 | 黄浩 | There are the fire resistant doorsets of sensing fire-extinguishing function concurrently in a kind of ship |
| CN108222733A (en) * | 2018-02-09 | 2018-06-29 | 华南农业大学 | One kind is from the normally closed fire resistant doorsets of return |
-
2016
- 2016-04-26 CN CN201620356486.7U patent/CN205605023U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761288A (en) * | 2016-12-17 | 2017-05-31 | 黄浩 | There are the fire resistant doorsets of sensing fire-extinguishing function concurrently in a kind of ship |
| CN106761288B (en) * | 2016-12-17 | 2018-06-22 | 黄浩 | There are the fire resistant doorsets of sensing fire-extinguishing function concurrently in a kind of ship |
| CN108222733A (en) * | 2018-02-09 | 2018-06-29 | 华南农业大学 | One kind is from the normally closed fire resistant doorsets of return |
| CN108222733B (en) * | 2018-02-09 | 2023-06-09 | 华南农业大学 | Self-return normally-closed fireproof door |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102711922A (en) | Fire evacuation shelter facilities | |
| CN205605023U (en) | Fire door is prevented to normal close with door closer | |
| CN205605022U (en) | Normal close formula pearlite is fire -retardant prevents fire door | |
| CN205605021U (en) | Fire door is prevented to normal close formula | |
| CN205604925U (en) | Fire door installation component is prevented to normal close formula | |
| CN205370363U (en) | Steel fireproof wooden door with prevent fire door lockpin device | |
| CN203308359U (en) | Multifunctional window | |
| CN112096253B (en) | Safety fire-resistant window | |
| CN205604981U (en) | Rotatory window of normal close formula | |
| CN214463340U (en) | Pneumatic type quick smoke exhaust window | |
| CN205277224U (en) | Steel insulating fire door | |
| CN205532153U (en) | Fire door is prevented to steerable sealing member expanded | |
| CN107288507A (en) | One kind is every cigarette escape fire-proof door | |
| CN210828951U (en) | Fireproof heat-insulation safety door | |
| CN208534358U (en) | A kind of fire-proof sound insulation clamshell doors | |
| CN208236272U (en) | A kind of stainless steel heat-insulating fireproof door | |
| CN112096256B (en) | Noise-reducing energy-saving door and window | |
| CN213683807U (en) | Cut off effectual high strength and prevent fire door | |
| KR101591231B1 (en) | Emergency gate with evacuation space | |
| CN217681422U (en) | Steel fireproof door with sound insulation and heat insulation effects | |
| CN218177080U (en) | High fire protection system door and window of security | |
| CN212359543U (en) | Fireproof indoor composite door | |
| CN216341739U (en) | Sound insulation type fireproof door | |
| CN212958337U (en) | Wooden fire door | |
| CN213683806U (en) | Wooden heat-insulating fireproof door with heat-insulating fireproof filler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160928 Termination date: 20170426 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |