CN110118057A - A kind of safe fireproof steel rolling blind - Google Patents
A kind of safe fireproof steel rolling blind Download PDFInfo
- Publication number
- CN110118057A CN110118057A CN201910502449.0A CN201910502449A CN110118057A CN 110118057 A CN110118057 A CN 110118057A CN 201910502449 A CN201910502449 A CN 201910502449A CN 110118057 A CN110118057 A CN 110118057A
- Authority
- CN
- China
- Prior art keywords
- spray nozzle
- water spray
- curtain sheet
- steel rolling
- rotary water
- 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.)
- Pending
Links
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C2/00—Fire prevention or containment
- A62C2/06—Physical fire-barriers
- A62C2/08—Water curtains
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/02—Nozzles specially adapted for fire-extinguishing
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
- E06B5/10—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes
- E06B5/16—Fireproof doors or similar closures; Adaptations of fixed constructions therefor
- E06B5/161—Profile members therefor
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B7/00—Special arrangements or measures in connection with doors or windows
- E06B7/28—Other arrangements on doors or windows, e.g. door-plates, windows adapted to carry plants, hooks for window cleaners
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
- E06B9/08—Roll-type closures
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
- E06B9/08—Roll-type closures
- E06B9/11—Roller shutters
- E06B9/15—Roller shutters with closing members formed of slats or the like
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
- E06B9/68—Operating devices or mechanisms, e.g. with electric drive
- E06B9/70—Operating devices or mechanisms, e.g. with electric drive comprising an electric motor positioned outside the roller
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
- E06B9/08—Roll-type closures
- E06B9/11—Roller shutters
- E06B9/15—Roller shutters with closing members formed of slats or the like
- E06B2009/1505—Slat details
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Architecture (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
Abstract
The invention discloses a kind of safe fireproof steel rolling blinds, belong to fire resisting shutter technical field, including curtain sheet, automatic winder, seat board and guide rail, the curtain sheet tipping overwrap is in the automatic winder, the bottom end of the curtain sheet is connect with the seat board, the automatic winder includes spool, door roller and travel switch, the spool is connect with the door roller, the door roller is connect with travel switch, the curtain sheet is slidably installed in guide rail by driving chain, and driving chain is connect with door roller, spool respectively；The travel switch connects automatic control device；The safe fireproof steel rolling blind further includes cooling device, the cooling device is fixed on curtain sheet side, the cooling device includes Rotary Water spray nozzle, and the Rotary Water spray nozzle is internally provided with rotary body, and the Rotary Water spray nozzle is installed on water delivery pipe end.The configuration of the present invention is simple, easy to use, practical, suitable popularization and use.
Description
Technical field
The present invention relates to fire resisting shutter technical field more particularly to a kind of safe fireproof steel rolling blinds.
Background technique
Fire resistance rolling shutter door within a certain period of time, the roller shutter of fire stability and integrity demands is able to satisfy together with frame, by
The composition such as curtain plate, spool, motor, guide rail, bracket, shield and control mechanism.Fire resisting shutter is mainly used for being prevented
The wall that fire separates, especially firewall because producing, using etc. need to open up larger open and can not be arranged on fire partition
Fire separation when fire resistant doorsets.Fireproof shutter face reaches the lifting of roller shutter by transmission device and control system.Play fire prevention,
Fire insulation effect, the smooth beautiful, modern design of product shape, has the characteristics that rigidity is strong.Fire resistance rolling shutter door is widely used in industry
With the fireproof partition area of civil buildings, fire spreading can effectively stop, ensure the security of the lives and property, being can not in modern architecture
The fireproofing installation lacked.It is a kind of movable fire protection separators, is generally made of sheet metals such as steel plates, with retaining ring or hingedly
Method composition, usually rolls in door and window shaft case suitable for reading, expansion is put down when on fire, to prevent the intensity of a fire from door and window hole
Mouth sprawling.Fire resisting shutter is modern architecture fireproof indispensability facility, has been included in country's building and other fire protection design of building rule
Model, main Types have vertical fireproof steel rolling blind, lateral fireproof steel rolling blind, lie down fireproof steel rolling blind.It is widely used in advanced
The building such as hotel, restaurant, library, cinema, megastore, station, underground engineering and industrial building, warehouse, garage.
Existing fire resisting shutter is thrown away there are certain defect, and common fire resisting shutter heat-proof quality is very poor, heat transfer property one
As 50 times of building materials, so curtain face unexposed surface temperature steeply rises when by fire effect, be above standard defined maximum quickly
Allow temperature rise, makes to carry on the back the combustible near fiery face and light and lose fire insulation effect.Therefore, a kind of safety is proposed regarding to the issue above
Fireproof steel rolling blind.
Summary of the invention
The object of the invention is that providing one kind to solve the problems, such as above-mentioned common fire resisting shutter heat-proof quality difference
Safe fireproof steel rolling blind, has the advantages that good cooling effect.
To achieve the above object, the present invention adopts the following technical scheme:
A kind of safe fireproof steel rolling blind, including curtain sheet, automatic winder, seat board and guide rail, the curtain sheet top
Wound in the automatic winder, the bottom end of the curtain sheet is connect with the seat board, and the automatic winder includes volume
Axis, door roller and travel switch, the spool are connect with the door roller, and the door roller is connect with travel switch, described
Curtain sheet is slidably installed in guide rail by driving chain, and driving chain is connect with door roller, spool respectively；The travel switch connects
Connect automatic control device；
The safe fireproof steel rolling blind further includes cooling device, and the cooling device is fixed on curtain sheet side, the drop
Warm device includes Rotary Water spray nozzle, and the Rotary Water spray nozzle is internally provided with rotary body, the Rotary Water
Spray nozzle is installed on water delivery pipe end.
Further technical solution, the automatic control device include electric cabinet, temperature sensitive probe and Smoke Detector, described
Temperature sensitive probe, Smoke Detector are respectively used to detection environment temperature and smokescope and issue temperature and Smoke Detection signal, described
Electric cabinet drives the door roller to rotate for receiving the temperature and Smoke Detection signal.
Further technical solution, the automatic control device further include button box, the button box and the electric cabinet
It further include alarm center module inside the electric cabinet using electric connection.
Further technical solution, the automatic winder are mounted in flameproof enclosure, and Rotary Water spray nozzle is solid
It is scheduled on flameproof enclosure.
Further technical solution, the distance between the Rotary Water spray nozzle and the curtain sheet are 5.8cm-
6.2cm, and spray angle is 21 ° -23 ° between the Rotary Water spray nozzle and the curtain sheet.
Further technical solution, the Rotary Water spray nozzle is provided with several, and Rotary Water spray nozzle
Along curtain sheet transverse direction equidistantly distributed on flameproof enclosure, the distance between described Rotary Water spray nozzle is 14cm-15cm.
The groove of regular distribution is arranged in the curtain chip surface.
Compared with prior art, the present invention having the following obvious advantages:
1, this kind of safe fireproof steel rolling blind by singly pull formula fireproof steel rolling blind and transmission device side arrange one
The advantages of water pipe and control system of even installation Rotary Water spray nozzle form, remain one-board fireproof steel rolling blind, uses
The two-phase association of small water droplet and mist makes curtain face cool down, and within the fire endurance time, the unexposed surface temperature in curtain face is at 100 DEG C
Below, it is ensured that the heat-insulating capability that fire resisting shutter substitution firewall uses plays effectively fire-proof and thermal-insulation effect.
2, the groove of regular distribution is set in curtain sheet of the invention, is conducive to the aggregation of steam, forms thermal isolation film, is saved
Water, while water mist plays the role of removing smoke well, reduces environment temperature, and good personnel are created within the scope of water mist
Environment is evacuated, makes one clearheaded, smooth breathing, vision well reduces fire casualties.
3, structure of the invention is simple, easy to use, has good flameproof effect, practical, is suitble to promote the use of.
Detailed description of the invention
Fig. 1 is overall structure of the present invention.
Fig. 2 is Rotary Water spray nozzle mounting structure schematic diagram of the invention.
Fig. 3 is curtain sheet structural schematic diagram of the invention.
Fig. 4 is Rotary Water spray nozzle structural schematic diagram of the invention.
Fig. 5 is Rotary Water spray nozzle schematic diagram of internal structure of the invention.
Fig. 6 is Rotary Water spray nozzle outlet structure schematic diagram of the invention.
In figure: 1- curtain sheet, 101- groove, 2- guide rail, 3- seat board, 4- spool, 5- travel switch, 6- door roller, 7- are automatically controlled
Case, 8- temperature sensitive probe, 9- Smoke Detector, 10- button box, 11- driving chain, 12- flameproof enclosure, 13- water-supply-pipe, 14- are rotary
Water spray spray head, 15- rotary body, 16- pivoting leaf, 17- straight line spout.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Refering to fig. 1 shown in -6, a kind of safe fireproof steel rolling blind, including curtain sheet 1, automatic winder, seat board 3 and lead
Rail 2, in the automatic winder, the bottom end of the curtain sheet 1 is connect 1 tipping overwrap of curtain sheet with the seat board 3, described
Automatic winder includes spool 4, door roller 6 and travel switch 5, and the spool 4 is connect with the door roller 6, the volume
Door machine 6 is connect with travel switch 5, and the curtain sheet 1 is slidably installed in guide rail 2 by driving chain 11, and driving chain 11 is distinguished
It is connect with door roller 6, spool 4；The travel switch 5 connects automatic control device；
The safe fireproof steel rolling blind further includes cooling device, and the cooling device is fixed on 1 side of curtain sheet, the drop
Warm device includes Rotary Water spray nozzle 14, and the Rotary Water spray nozzle 14 is internally provided with rotary body 15, the rotation
Rotatable water spray spray head 14 is installed on 13 end of water-supply-pipe, by by water-supply-pipe 13 convey Lai high-velocity flow be divided into multiply height
The water flow and direct projection water flow of speed rotation, high-speed rotating water flow and direct projection water flow are mutually hit, are beaten when passing through hand line nozzle
It is broken, so that these extremely unstable thin water flows resolve into droplet, it is spouting from nozzle, it just forms water and the two of mist and mixes
Body.
The automatic control device includes electric cabinet 7, temperature sensitive probe 8 and Smoke Detector 9, the temperature sensitive probe 8, cigarette sense
Probe 9 is respectively used to detection environment temperature and smokescope and issues temperature and Smoke Detection signal, and the electric cabinet 7 is for connecing
By the temperature and Smoke Detection signal, and the door roller 6 is driven to rotate.
The automatic control device further includes button box 10, and the button box 10 is used with the electric cabinet 7 to be electrically connected,
It further include alarm center module inside the electric cabinet 7, alarm center module and rescue center carry out communication connection, when dangerous situation is sent out
When raw, be conducive to the timely expansion of rescue.
The automatic winder is mounted in flameproof enclosure 12, and Rotary Water spray nozzle 14 is fixed on flameproof enclosure 12
On, flameproof enclosure 12 is conducive to the protection of automatic winder, improves the safety of device.
The distance between the Rotary Water spray nozzle 14 and the curtain sheet 1 are 5.8cm-6.2cm, and described rotary
Spray angle is 21 ° -23 ° between water spray spray head 14 and the curtain sheet 1.
The Rotary Water spray nozzle 14 is provided with several, and Rotary Water spray nozzle 14 is lateral along curtain sheet 1
For equidistantly distributed on flameproof enclosure 12, the distance between described Rotary Water spray nozzle 14 is 14cm-15cm.
The groove 101 of regular distribution is arranged in 1 surface of curtain sheet.
This kind of safe fireproof steel rolling blind has the advantages that when in use
One, it makes full use of the heat absorption of water and vaporization ripe, keeps curtain face cooling effect especially good
For water with 0.25MP pressure by Rotary Water spray nozzle, making water fogging to diameter is lmm small water below
Drop, directive curtain face；Since the specific surface area of water increases, heat absorption rapidly, evaporates fast (heat of evaporation of water is about 539 kcal/kg),
Heat on curtain face is taken away rapidly.
Two, water spray intensity is small
It is detected through test of many times, the water spray intensity of rotary sprinkler protection fire resisting shutter is 0.25L/s.m, anti-for water curtain
The 1/4 of the water spray intensity of fiery roller shutter or automatic water jetting spray head encryption fire resisting shutter.
Three, the Henan flue gas effect that disappears is good
Water mist plays the role of removing smoke well, reduces environment temperature, and good personnel are created within the scope of water mist
Environment is evacuated, clearheaded, smooth breathing is made one, vision is good, reduces fire casualties.
Four, the transmission device of water vapour energy effective protection fire resisting shutter
It when fire occurs spraying, is surrounded above fire resisting shutter by water vapour, has blocked combustion and had mercy on, protect electric appliance transmission dress
Set the normal operation within the fire endurance time.
Five, the cost of fire resistance rolling shutter door is low
The curtain plate thickness of fireproof steel rolling blind generally foot 1.2mm-2.2mm, relative to water curtain fire resisting shutter and automatic water jetting
Spray head encrypts fire resisting shutter, using the good cooling results of rotary sprinkler protection fire resisting shutter strings of cash Rotary Water spray nozzle.
Therefore, the curtain plate thickness of rotary sprinkler protection fire resisting shutter encrypts fireproof rolling than water curtain fire resisting shutter and automatic water jetting spray head
The curtain plate thickness of curtain is thin, so that the overall cost of fire resisting shutter reduces.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (7)
1. a kind of safe fireproof steel rolling blind, including curtain sheet (1), automatic winder, seat board (3) and guide rail (2), the curtain
Piece (1) tipping overwrap is in the automatic winder, and the bottom end of the curtain sheet (1) is connect with the seat board (3), and feature exists
In: the automatic winder include spool (4), door roller (6) and travel switch (5), the spool (4) and the rolling door
Machine (6) connection, the door roller (6) connect with travel switch (5), and the curtain sheet (1) is slidably installed by driving chain (11)
In guide rail (2), and driving chain (11) is connect with door roller (6), spool (4) respectively；The automatic control of travel switch (5) connection
Device processed；
The safe fireproof steel rolling blind further includes cooling device, and the cooling device is fixed on curtain sheet (1) side, the cooling
Device includes Rotary Water spray nozzle (14), and the Rotary Water spray nozzle (14) is internally provided with rotary body (15), institute
It states Rotary Water spray nozzle (14) and is installed on water-supply-pipe (13) end.
2. a kind of safe fireproof steel rolling blind according to claim 1, it is characterised in that: the automatic control device includes
Electric cabinet (7), temperature sensitive probe (8) and Smoke Detector (9), the temperature sensitive probe (8), Smoke Detector (9) are respectively used to detect
Environment temperature and smokescope simultaneously issue temperature and Smoke Detection signal, and the electric cabinet (7) is for receiving the temperature and cigarette
Mist detects signal, and the door roller (6) is driven to rotate.
3. a kind of safe fireproof steel rolling blind according to claim 1, it is characterised in that: the automatic control device also wraps
It includes button box (10), the button box (10) and the electric cabinet (7) are also wrapped inside the electric cabinet (7) using being electrically connected
Include alarm center module.
4. a kind of safe fireproof steel rolling blind according to claim 1, it is characterised in that: the automatic winder installation
In flameproof enclosure (12), and Rotary Water spray nozzle (14) is fixed on flameproof enclosure (12).
5. a kind of safe fireproof steel rolling blind according to claim 1, it is characterised in that: the Rotary Water spray nozzle
It (14) is 5.8cm-6.2cm with the distance between the curtain sheet (1), and the Rotary Water spray nozzle (14) and the curtain sheet
(1) spray angle is 21 ° -23 ° between.
6. a kind of safe fireproof steel rolling blind according to claim 1, it is characterised in that: the Rotary Water spray nozzle
(14) several are provided with, and Rotary Water spray nozzle (14) along the lateral equidistantly distributed of curtain sheet (1) in flameproof enclosure (12)
On, the distance between described Rotary Water spray nozzle (14) is 14cm-15cm.
7. a kind of safe fireproof steel rolling blind according to claim 1, it is characterised in that: curtain sheet (1) the surface setting
The groove (101) of regular distribution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910502449.0A CN110118057A (en) | 2019-06-11 | 2019-06-11 | A kind of safe fireproof steel rolling blind |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910502449.0A CN110118057A (en) | 2019-06-11 | 2019-06-11 | A kind of safe fireproof steel rolling blind |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110118057A true CN110118057A (en) | 2019-08-13 |
Family
ID=67523919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910502449.0A Pending CN110118057A (en) | 2019-06-11 | 2019-06-11 | A kind of safe fireproof steel rolling blind |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110118057A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110816333A (en) * | 2019-11-21 | 2020-02-21 | 重庆交通大学 | Electric vehicle roller shutter type charging cover structure assembly |
| EP4234871A4 (en) * | 2020-11-02 | 2024-03-27 | Kim Jung Gyu | In-building access path installation type smoke control system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204952004U (en) * | 2015-07-28 | 2016-01-13 | 山东龙江门业有限公司 | Can rotatory rolling slats door of spraying water |
| CN207377471U (en) * | 2017-11-01 | 2018-05-18 | 天津奥德科技有限公司 | Electric insulation rolling curtain |
-
2019
- 2019-06-11 CN CN201910502449.0A patent/CN110118057A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204952004U (en) * | 2015-07-28 | 2016-01-13 | 山东龙江门业有限公司 | Can rotatory rolling slats door of spraying water |
| CN207377471U (en) * | 2017-11-01 | 2018-05-18 | 天津奥德科技有限公司 | Electric insulation rolling curtain |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110816333A (en) * | 2019-11-21 | 2020-02-21 | 重庆交通大学 | Electric vehicle roller shutter type charging cover structure assembly |
| EP4234871A4 (en) * | 2020-11-02 | 2024-03-27 | Kim Jung Gyu | In-building access path installation type smoke control system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20190813 |