CN102116125A - Folding normally-open fireproof door - Google Patents
Folding normally-open fireproof door Download PDFInfo
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- CN102116125A CN102116125A CN2011100205328A CN201110020532A CN102116125A CN 102116125 A CN102116125 A CN 102116125A CN 2011100205328 A CN2011100205328 A CN 2011100205328A CN 201110020532 A CN201110020532 A CN 201110020532A CN 102116125 A CN102116125 A CN 102116125A
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- door
- labeled door
- slide block
- labeled
- spring
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Abstract
The invention provides a folding normally-open fireproof door. The fireproof door comprises a door frame and door plates positioned in the door frame, wherein each door plate comprises a foldable first sector plate and a foldable second sector plate; the first sector plates are rotationally connected to the door frame; the fireproof door further comprises a control circuit, door closers, slide blocks, door closing springs and door clamping angle locks; the slide blocks slide along a cross beam of the door frame and are simultaneously connected with upper arrises of the second sector plates, so that the slide blocks drive the second sector plates to move when moving; the door closing springs fixedly connected to the door frame are used for applying force to the slide blocks in the opening positions of the second sector plates when the door is closed; the door clamping angle locks are arranged in positions right facing to the slide blocks; each door clamping angle lock comprises a relay, an inserting bar and a reset spring; the relay is electrically connected with the control circuit; the relay drives the inserting bar to move and avoids corresponding inserting grooves on the slide blocks; and the reset spring applies force on the inserting bar to enable the inserting bar to be embedded into the inserting groove. The fireproof door has the benefit that by adopt the door closers and the door closing springs simultaneously acting on the foldable first sector plates and the foldable second sector plates, the closing of the folding door plates is achieved.
Description
Technical field
The present invention relates to labeled door manufacturing technology field, particularly a kind of collapsible labeled door of often opening.
Background technology
Labeled door is installed in the building, has the heat insulation and fire-proof function in space in the building, promptly can satisfy fire insulation and fire integrity requirement simultaneously in official hour.
Existing a kind of common labeled door, it is a normally off, when visitors flowrate is big, causes indoor passageway obstacle to the pedestrian, has a strong impact on pedestrian's discrepancy.At this moment, the pedestrian often adopts hard thing to block door-plate bottom to stop it to close, and this labeled door uses inconvenient, need by manual adjustment, and hard thing card ends the easy damaged door-plate.Perhaps, do not adopt hard thing card only to protect open mode, but the frequent push-and-pull door-plate reciprocally of pedestrian equally easily cause damage to door-plate, causes door-plate to close to hold together at last, thereby has lost anti-fire action.
Analyze SHAPE the existing labeled door of * MERGEFORMAT, find that it in use, the pedestrian at first requires its convenience, the labeled door that is normally off is when visitors flowrate is big, to occur phenomenons such as personnel crowd, crush easily, bring very big inconvenience for the pedestrian of inlet/outlet, in order to scheme conveniently, tend to that labeled door is opened the back and door-plate is blocked, with the discrepancy environment of providing convenience to the pedestrian with object.
Secondly its safety of existing labeled door is low.One of Shenzhen Polytechnic is had the 80 teaching building fact-findings of fanning labeled doors, and the labeled door of discovery 10% blocks with stopper and does not allow it close, and 30% labeled door door-plate closes to hold together, can not cut out fully.In this case, in case breaking out of fire, if floor nobody, the intensity of a fire can be very fast to around spread the heavy losses property; If floor has the people to escape the inferno, they only can produce the consciousness of escape mostly, often can not remove the stopper of toll bar, and the labeled door of this moment does not just play Smoke prevention, fireproof effect.
Last its economy of existing labeled door is unreasonable.Because frequent reciprocal push-and-pull labeled door is accelerated the aging and wearing and tearing of labeled door, the sealing of door-plate reduces, even deformity.Thereby do not have the effect of heat-insulating, fire-preventing, increased maintenance cost simultaneously greatly yet.
Summary of the invention
In order to solve existing technical problem, the invention provides a kind of collapsible labeled door of often opening, the current demand that it makes things convenient for the pedestrian has improved safety and economic rationality simultaneously.
The present invention solves existing technical problem, and a kind of collapsible labeled door of often opening is provided, and the door-plate that it comprises doorframe and is positioned at described doorframe, described door-plate comprise the first fan plate and the second fan plate that can fold, and the described first fan plate is rotationally connected with described doorframe; Described labeled door also comprises control circuit, door closer, slide block, closes door spring and toll bar angle lock; Described door closer comprises energy storage part, first connecting rod and second connecting rod; Described energy storage part is fixedly connected on the described first fan plate, and described energy storage part links to each other with an end of described first connecting rod, drives described first connecting rod and rotates; The other end of described first connecting rod is articulated in the end of described second connecting rod, and the other end of described second connecting rod is articulated in described doorframe; Described slide block slides along the crossbeam of described doorframe, and simultaneously, described slide block links to each other with the last corner angle of the described second fan plate, is being with the described second fan plate to move when slide block moves; The described door spring that closes is fixed on described doorframe, the described second fan plate of the application of force when being used to close; The described slide block of the described second fan plate open position is provided with described toll bar angle lock over against this slide block; Described toll bar angle lock comprises relay, inserted link and back-moving spring, described relay and described control circuit electrically connect, described relay band described inserted link and is moved the slot of dodging correspondence on the described slide block, and described back-moving spring forces in described inserted link makes it embed described slot.
The present invention further improves:
When inserted link was dodged described slot, described slide block moved under the described application of force of closing door spring, by door closer with close that the door spring band the described first fan plate and the described second fan plate moves to fastening position.
Described labeled door comprises the track that is fixedly connected on described crossbeam, and described slide block is connected in described track.
The described second fan plate, described slide block, the corresponding one by one setting of described toll bar angle lock.
Described labeled door comprises a plurality of door-plates, corresponding comprises a plurality of slide blocks, a plurality of track, a plurality of door spring that closes, one one corresponding the setting; And described a plurality of closing between the door spring be arranged in parallel.
Described labeled door comprises at least one smoke alarm that is arranged in the walkway, and described smoke alarm links to each other with described control circuit.
Described labeled door comprises the Infrared Detectors that is arranged on the described crossbeam, and described Infrared Detectors is two, lays respectively at the two sides of described crossbeam.
Described labeled door comprises the hand switch that is used to change the inserted link state, and described hand switch links to each other with described relay, is used to change the state of inserted link.
Described door-plate is two, and it is a clamshell doors.
The described door spring that closes is tension spring or thrust spring.
Compared to prior art, the invention has the beneficial effects as follows: adopt door closer to act on the first fan plate and the second fan plate that can fold simultaneously, realized closing of folding door-plate with closing door spring; Simultaneously, adopt the slot of the inserted link embedding slide block of toll bar angle lock, to keep folding door-plate normally open; Smoke signal when adopting the smoke alarm collection to catch fire is closed with automatic control labeled door, isolates heat and isolates cigarette; Adopt Infrared Detectors to gather the preceding pedestrian signal of labeled door and be convenient to the personnel escape, treat to close this labeled door again after the escape personnel is by labeled door under the fire prevention state, to open the labeled door of closing; The present invention has improved the safety and the economic serviceability of labeled door.
Description of drawings
Fig. 1 is the collapsible structural principle schematic diagram of often opening labeled door of the present invention.
Fig. 2 is the partial circuit schematic diagram of described labeled door.
Fig. 3 is the structural representation of described labeled door.
Fig. 4 is the structural representation of door closer described in Fig. 3.
Fig. 5 is the structural representation of the lock of toll bar angle described in Fig. 3.
Fig. 6 is provided with the structural representation of hand switch for described labeled door.
Fig. 7 is provided with smoke alarm for described labeled door, first, second closes the structural representation of door spring.
The specific embodiment
The present invention is further described below in conjunction with description of drawings and the specific embodiment.
Extremely shown in Figure 7 as Fig. 1, a kind of collapsible labeled door of often opening, the door-plate 12 that it comprises doorframe 11 and is positioned at doorframe 11, door-plate 12 comprises the first fan plate 121 and the second fan plate 122 that can fold, the first fan plate 121 is rotationally connected with doorframe 11, when door-plate 12 changes open mode into from cutting out, this first fan plate 121 rotates about 90 degree around doorframe 11, simultaneously, the first fan plate 121 also spurs the second fan plate 122 and rotates in rotating process, the final realization first fan plate 121 and the second fan plate 122 fold and are in open mode, and the labeled door that the present invention is directed to is for folding labeled door, and this collapsible labeled door can reduce spatial area shared under the door-plate open mode.This labeled door also comprises control circuit 20, door closer 13, slide block 15, closes door spring 14 and toll bar angle lock 21; Be in open mode under this labeled door normality, when dangerous situation occurring, can control the closing motion of labeled door automatically.Door closer 13 comprises energy storage part 131, first connecting rod 132 and second connecting rod 133; Energy storage part 131 is fixedly connected on the first fan plate 121, and energy storage part 131 links to each other with an end of first connecting rod 132, drives first connecting rod 132 and rotates; The other end of first connecting rod 132 is articulated in the end of second connecting rod 133, and the other end of second connecting rod 133 is articulated in doorframe 11, and door closer 13 constitutes a double rocker mechanism in conjunction with the first fan plate 121 like this, i.e. the first fan plate also rotated when energy storage part 131 outputs were rotated.Slide block 15 slides along the crossbeam 111 of doorframe 11, and slide block 15 is articulated in the last corner angle of the second fan plate 122, fans the opposite side of plate 121 with first, linking to each other with slide block 15 is provided with one and closes door spring 14.When door-plate 12 was positioned at open position, the slide block 15 of this position was over against toll bar angle lock 21 is set.Toll bar angle lock 21 comprises relay 211, inserted link 212 and back-moving spring 213, relay 211 electrically connects with control circuit 20, relay 211 moves with inserted link 212 and dodges slot corresponding on the slide block 15, and back-moving spring 213 forces in inserted link 212 makes it embed slot.When door-plate is converted to the process of cutting out from opening, inserted link 212 leaves from slot, and slide block is being with the second fan plate to move closing under the application of force of door spring, and the first fan plate also moves under the effect of door closer, finally reaches closure state.Promptly when labeled door was opened, inserted link 212 guaranteed that slide block does not leave open position because the effect of back-moving spring 213 embeds the slot of toll bar angle lock downwards; When labeled door was closed, inserted link 212 guaranteed clog-free outer the moving of slide block because the suction of relay 211 is dodged slot.
The present invention is for the ease of the accuracy of slide block position when crossbeam moves, preferably will a track 16 be set in the labeled door, track 16 is fixedly connected on crossbeam 111, and slide block 15 is connected in track 16, move along track 16 when slide block 15 moves like this, guarantee the accurate of its position.
The present invention is in order to slow down the closing velocity of door-plate, damping mechanism preferably is set in labeled door, damping mechanism with close door spring 14 and be connected, this resistance mechanism has reduced the pulling force of closing of the second fan plate in conjunction with damping mechanism, thereby labeled door is slowly closed with controllable safety speed.Labeled door of the present invention is a clamshell doors, and it closes door spring 14 two, is respectively first to close door spring 141 and second and close door spring 142, and two to close door spring parallel and establish with this.When door closer 13 acts on door-plate under the open mode, this moment, the first fan plate, 121 convergences 90 were spent, so useful effect power levels off to 0, under the effect of frictional force, be difficult to realize closing automatically of door-plate this moment, combine and two close the tension of door spring, the too small problem of effective force when having solved hold-open door door closer pressure angle convergence 90 being spent door-plate.This closes door spring is tension spring or thrust spring, particularly thrust spring, during for the state that is in 90 degree dead points its to close an effect preferable.When adopting tension spring, this tension spring is installed in the mobile outside of slide block; When adopting thrust spring, this thrust spring is installed in the mobile inboard of slide block.
Labeled door of the present invention comprises a plurality of smoke alarms 18 that are arranged in the walkway, a plurality of smoke alarms 18 link to each other with control circuit 20, when fire takes place, labeled door is by smoke alarm 18, in case sense the existence of smog, the relay power of toll bar angle lock 21 is regained inserted link 212, and door-plate 12 can auto-closings at this moment.Labeled door also comprises the Infrared Detectors 19 that is arranged on the crossbeam 111, Infrared Detectors 19 is two, lay respectively at the two sides of crossbeam 111, owing to be provided with smoke alarm 18 and Infrared Detectors 19, when the people passed through labeled door, human body infrared detector 19 can detect the pedestrian and send feedback signal to control circuit 20, and this moment, labeled door was not made closing motion, by finishing, door-plate is closed slowly by the effect of damping mechanism again Deng the pedestrian.On spring, added the buffering damping unit, it is closed up slowly, thereby fortuitous event such as avoided crushing.Labeled door comprises a manual switch 22, and hand switch 22 links to each other with relay 211, when the solution control circuit of often opening labeled door breaks down like this, can realize manual-locks by hand switch 22, and this hand switch 22 is a manual connecting rod.
The present invention is collapsible, and often to open the operating principle of labeled door as follows:
At first, under normal conditions, this labeled door keeps normally open, and control circuit inserts fire power, and is equipped with battery so that use when emergent.
Secondly, when breaking out of fire, the dense smoke that in a single day smoke alarm is sensed fire and produced, and human body infrared detector (investigative range is in 10 meters of probe) is not sensed the someone when passing through labeled door, control circuit is to relay power, thereby the inserted link of toll bar angle lock is regained, and door-plate is realized slowly closed by door closer, the acting in conjunction of closing door spring and damping mechanism; When the generation of sensing fire, and human body infrared detector senses the someone when passing through labeled door, and control circuit is to relay power, thereby can not close this door, up to unmanned by the time close again.
Then, after door is closed, in order to guarantee survivor and rescue personnel's turnover, realize the manual unlocking labeled door by hand switch, when the people by after dependence close the elastic force of door spring, labeled door can be closed automatically again in case the spreading of the intensity of a fire.
At last, when the situation that circuit interruption occurs, power supply is cut off even cause of fire causes smoke alarm to be triggered before, also can utilize hand switch to realize closing of labeled door.
Based Intelligent Control of the present invention is collapsible often open labeled door safety, reliable, the life-span is long, more can satisfy the needs of fire-fighting.Be specially adapted to passageway for fire apparatus such as the bigger Stairs of visitors flowrate such as school, hospital, cinema.
The present invention adopts door closer to act on the first fan plate and the second fan plate that can fold simultaneously with closing door spring, has realized closing of folding door-plate; Simultaneously, adopt the slot of the inserted link embedding slide block of toll bar angle lock, to keep folding door-plate normally open; Smoke signal when adopting the smoke alarm collection to catch fire is closed with automatic control labeled door, isolates heat and isolates cigarette; Adopt Infrared Detectors to gather the preceding pedestrian signal of labeled door and be convenient to the personnel escape, treat to close this labeled door again after the escape personnel is by labeled door under the fire prevention state, to open the labeled door of closing; The present invention has improved the safety and the economic serviceability of labeled door.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. collapsible labeled door of often opening, the door-plate that it comprises doorframe and is positioned at described doorframe, described door-plate comprise the first fan plate and the second fan plate that can fold, and the described first fan plate is rotationally connected with described doorframe; It is characterized in that: described labeled door also comprises control circuit, door closer, slide block, closes door spring and toll bar angle lock; Described door closer comprises energy storage part, first connecting rod and second connecting rod; Described energy storage part is fixedly connected on the described first fan plate, and described energy storage part links to each other with an end of described first connecting rod, drives described first connecting rod and rotates; The other end of described first connecting rod is articulated in the end of described second connecting rod, and the other end of described second connecting rod is articulated in described doorframe; Described slide block slides along the crossbeam of described doorframe, and simultaneously, described slide block links to each other with the last corner angle of the described second fan plate, is being with the described second fan plate to move when slide block moves; The described door spring that closes is fixed on described doorframe, the described second fan plate of the application of force when being used to close; The described slide block of the described second fan plate open position is provided with described toll bar angle lock over against this slide block; Described toll bar angle lock comprises relay, inserted link and back-moving spring, described relay and described control circuit electrically connect, described relay band described inserted link and is moved the slot of dodging correspondence on the described slide block, and described back-moving spring forces in described inserted link makes it embed described slot.
2. the collapsible labeled door of often opening according to claim 1, it is characterized in that: when inserted link is dodged described slot, described slide block moves under the described application of force of closing door spring, by door closer with close that the door spring band the described first fan plate and the described second fan plate moves to fastening position.
3. the collapsible labeled door of often opening according to claim 2, it is characterized in that: described labeled door comprises the track that is fixedly connected on described crossbeam, described slide block is connected in described track.
4. the collapsible labeled door of often opening according to claim 3 is characterized in that: the described second fan plate, described slide block, the corresponding one by one setting of described toll bar angle lock.
5. the collapsible labeled door of often opening according to claim 3, it is characterized in that: described labeled door comprises a plurality of door-plates, corresponding comprises a plurality of slide blocks, a plurality of track, a plurality of door spring that closes, one one corresponding the setting; And described a plurality of closing between the door spring be arranged in parallel.
6. according to any described collapsible labeled door of often opening of claim 1 to 5, it is characterized in that: described labeled door comprises at least one smoke alarm that is arranged in the walkway, and described smoke alarm links to each other with described control circuit.
7. according to any described collapsible labeled door of often opening of claim 1 to 5, it is characterized in that: described labeled door comprises the Infrared Detectors that is arranged on the described crossbeam, and described Infrared Detectors is two, lays respectively at the two sides of described crossbeam.
8. according to any described collapsible labeled door of often opening of claim 1 to 5, it is characterized in that: described labeled door comprises the hand switch that is used to change the inserted link state, and described hand switch links to each other with described relay, is used to change the state of inserted link.
9. according to any described collapsible labeled door of often opening of claim 1 to 5, it is characterized in that: described door-plate is two, and it is a clamshell doors.
10. according to any described collapsible labeled door of often opening of claim 1 to 5, it is characterized in that: the described door spring that closes is tension spring or thrust spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100205328A CN102116125B (en) | 2011-01-18 | 2011-01-18 | Folding normally-open fireproof door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100205328A CN102116125B (en) | 2011-01-18 | 2011-01-18 | Folding normally-open fireproof door |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102116125A true CN102116125A (en) | 2011-07-06 |
| CN102116125B CN102116125B (en) | 2012-11-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100205328A Expired - Fee Related CN102116125B (en) | 2011-01-18 | 2011-01-18 | Folding normally-open fireproof door |
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| CN (1) | CN102116125B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106178321A (en) * | 2016-08-29 | 2016-12-07 | 郑云龙 | Fire-fighting enclosure device for fire extinguishing |
| JP2017072002A (en) * | 2015-10-09 | 2017-04-13 | ナブテスコ株式会社 | Fire door |
| CN106800175A (en) * | 2017-03-30 | 2017-06-06 | 闫战勇 | A kind of board-like processing machine |
| CN108119030A (en) * | 2017-12-21 | 2018-06-05 | 珠海华发建筑设计咨询有限公司 | The normally opened fire resistant doorsets of fire-fighting link |
| CN108769185A (en) * | 2018-05-28 | 2018-11-06 | 苏州若依玫信息技术有限公司 | A kind of automatic shutter fire-fighting life-saving channel system for building |
| CN108868520A (en) * | 2018-06-30 | 2018-11-23 | 安徽安旺门业股份有限公司 | A kind of steel wood fire resistant doorsets that stability is good |
| CN109184433A (en) * | 2018-09-12 | 2019-01-11 | 涂玉华 | A kind of subway safe door with warning function |
| WO2020211002A1 (en) * | 2019-04-17 | 2020-10-22 | 合肥华凌股份有限公司 | Ice storage box, ice-making system, and refrigerator |
| CN112842849A (en) * | 2021-01-20 | 2021-05-28 | 深圳市艺水科技有限公司 | Acupoint massage hydrotherapy pool |
| CN113682929A (en) * | 2021-08-31 | 2021-11-23 | 日立电梯（中国）有限公司 | Door opening maintaining system applicable to elevator |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1175773A (en) * | 1967-02-03 | 1969-12-23 | Alno Moebel | Door Fitting for Cupboard and like Doors |
| DE29802878U1 (en) * | 1998-02-19 | 1998-04-23 | Düperthal Sicherheitstechnik GmbH & Co., 63791 Karlstein | Folding door wardrobe |
| CN2412077Y (en) * | 1999-11-08 | 2000-12-27 | 刘大立 | Remote controlled folding electric door |
| EP1205623A2 (en) * | 2000-11-14 | 2002-05-15 | Asecos GmbH | Safety cabinet |
| CN201326332Y (en) * | 2008-12-15 | 2009-10-14 | 浙江恒辉金属制品有限公司 | Door closer |
| CN201981966U (en) * | 2011-01-18 | 2011-09-21 | 深圳职业技术学院 | Normally-open fire door |
-
2011
- 2011-01-18 CN CN2011100205328A patent/CN102116125B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1175773A (en) * | 1967-02-03 | 1969-12-23 | Alno Moebel | Door Fitting for Cupboard and like Doors |
| DE29802878U1 (en) * | 1998-02-19 | 1998-04-23 | Düperthal Sicherheitstechnik GmbH & Co., 63791 Karlstein | Folding door wardrobe |
| CN2412077Y (en) * | 1999-11-08 | 2000-12-27 | 刘大立 | Remote controlled folding electric door |
| EP1205623A2 (en) * | 2000-11-14 | 2002-05-15 | Asecos GmbH | Safety cabinet |
| CN201326332Y (en) * | 2008-12-15 | 2009-10-14 | 浙江恒辉金属制品有限公司 | Door closer |
| CN201981966U (en) * | 2011-01-18 | 2011-09-21 | 深圳职业技术学院 | Normally-open fire door |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017072002A (en) * | 2015-10-09 | 2017-04-13 | ナブテスコ株式会社 | Fire door |
| CN106178321A (en) * | 2016-08-29 | 2016-12-07 | 郑云龙 | Fire-fighting enclosure device for fire extinguishing |
| CN106800175A (en) * | 2017-03-30 | 2017-06-06 | 闫战勇 | A kind of board-like processing machine |
| CN108119030A (en) * | 2017-12-21 | 2018-06-05 | 珠海华发建筑设计咨询有限公司 | The normally opened fire resistant doorsets of fire-fighting link |
| CN108119030B (en) * | 2017-12-21 | 2019-04-19 | 珠海华发建筑设计咨询有限公司 | The normally opened fire resistant doorsets of fire-fighting link |
| CN108769185A (en) * | 2018-05-28 | 2018-11-06 | 苏州若依玫信息技术有限公司 | A kind of automatic shutter fire-fighting life-saving channel system for building |
| CN108868520A (en) * | 2018-06-30 | 2018-11-23 | 安徽安旺门业股份有限公司 | A kind of steel wood fire resistant doorsets that stability is good |
| CN109184433A (en) * | 2018-09-12 | 2019-01-11 | 涂玉华 | A kind of subway safe door with warning function |
| CN109184433B (en) * | 2018-09-12 | 2020-11-24 | 哈工大泰州创新科技研究院有限公司 | Subway safety door with warning effect |
| WO2020211002A1 (en) * | 2019-04-17 | 2020-10-22 | 合肥华凌股份有限公司 | Ice storage box, ice-making system, and refrigerator |
| CN112842849A (en) * | 2021-01-20 | 2021-05-28 | 深圳市艺水科技有限公司 | Acupoint massage hydrotherapy pool |
| CN113682929A (en) * | 2021-08-31 | 2021-11-23 | 日立电梯（中国）有限公司 | Door opening maintaining system applicable to elevator |
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|---|---|
| CN102116125B (en) | 2012-11-14 |
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Granted publication date: 20121114 Termination date: 20130118 |