CN108643789B - Airtight door and window structure and door and window - Google Patents
Airtight door and window structure and door and window Download PDFInfo
- Publication number
- CN108643789B CN108643789B CN201810776504.0A CN201810776504A CN108643789B CN 108643789 B CN108643789 B CN 108643789B CN 201810776504 A CN201810776504 A CN 201810776504A CN 108643789 B CN108643789 B CN 108643789B
- Authority
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- China
- Prior art keywords
- fan body
- push rod
- electric push
- frame body
- door
- Prior art date
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Links
- 238000003825 pressing Methods 0.000 claims abstract description 46
- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 230000009471 action Effects 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 5
- 241000227287 Elliottia pyroliflora Species 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/60—Power-operated mechanisms for wings using electrical actuators
-
- 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
- E05F15/77—Power-operated mechanisms for wings with automatic actuation using wireless control
-
- 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
- E06B7/16—Sealing arrangements on wings or parts co-operating with the wings
- E06B7/22—Sealing arrangements on wings or parts co-operating with the wings by means of elastic edgings, e.g. elastic rubber tubes; by means of resilient edgings, e.g. felt or plush strips, resilient metal strips
Landscapes
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power-Operated Mechanisms For Wings (AREA)
- Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
Abstract
The invention discloses a closed door and window structure and a door and window, relates to the technical field of building doors and windows, and solves the problems of inconvenient operation and low tightness of the closed door and window at a higher installation position; a fan body assembled with the frame body; the hinge is arranged at one side of the frame body and used for connecting the frame body and the fan body; the electric push rod is assembled on one side of the frame body far away from the fan body and used for pushing the fan body to open or close relative to the frame body; and the pressing mechanism is arranged on one side of the fan body and assembled with the electric push rod so that the fan body can be tightly closed relative to the frame body under the action of the electric push rod. The purposes of remotely controlling the closing of the airtight door and window and improving the tightness of the airtight door and window are achieved.
Description
Technical Field
The invention relates to the technical field of building doors and windows, in particular to a novel airtight door and window structure and a novel airtight door and window.
Background
In places with high requirements on moisture-proof sealing and high installation positions and inconvenient manual opening and closing, the door and window is a grain depot building, a ordnance warehouse and a military equipment maintenance warehouse, and the required door and window has excellent heat preservation, moisture-proof sealing performance.
At present, a grain depot door and window is generally opened and closed in an electric mode, and the existing electric window is generally controlled to be opened and closed on site, so that an operator is inconvenient to operate the door and window to open and close; meanwhile, when the existing electric window is closed, the stress is uneven, so that the fan body is closed in an unbalanced manner, the tightness is reduced, and a good airtight and dampproof effect cannot be achieved; the airtight doors and windows of the ordnance warehouse and the military equipment maintenance warehouse are all in a manual opening and closing mode, and the installation position is higher, so that the opening and closing are more troublesome.
Therefore, it is necessary to relate to a closed door and window with good moisture-proof sealing performance, so as to solve the problems of inconvenient operation and low sealing performance of the door and window.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide a novel airtight door and window structure and door and window, and the novel airtight door and window structure and the door and window have the advantages of convenience in operation and high tightness.
The technical aim of the invention is realized by the following technical scheme:
a novel airtight door and window structure, comprising: a frame; the fan body assembled with the frame body is arranged on one side of the frame body and is used for connecting the frame body and the fan body; the electric push rod is assembled on one side of the frame body far away from the fan body and used for pushing the fan body to open or close relative to the frame body; and the pressing mechanism is arranged on one side of the fan body and assembled with the electric push rod so that the fan body can be tightly closed relative to the frame body under the action of the electric push rod.
According to a further arrangement of the invention, the hold-down mechanism comprises: the sliding block is arranged on one side of the fan body and is assembled at one end of the output shaft of the electric push rod; the pressing blocks are arranged on two sides of the fan body adjacent to the hinge; the connecting rod assembly is arranged between the sliding block and the pressing block; the support column is arranged on one side of the fan body and used for supporting the pressing block, the sliding block and the connecting rod assembly; the cylindrical pin is used for connecting the connecting rod assembly, the pressing block and the sliding block; the tension spring is arranged on one side of the fan body, and one end of the tension spring is connected with the sliding block; a pressing chute for clamping and embedding the pressing block is formed in the periphery of the frame body so as to press the fan body on the frame body; the sliding block is cross-shaped, and waist-shaped grooves for the cylindrical pins to penetrate are formed in the four directions.
Further provided is a connecting rod assembly comprising: the first connecting rod is used for connecting the pressing blocks on the same side of the frame body; the second connecting rod is connected with the sliding block and is arranged at one side of the fan body through the supporting column; and a third link provided between the first link and the second link; the second connecting rod is connected in the kidney-shaped groove through one end of the cylindrical pin, and the other end of the second connecting rod is connected with the third connecting rod.
According to the invention, the head of the pressing block is designed as a spherical roller, and the rotating part of the pressing block is inlaid with a self-lubricating copper sleeve.
According to the invention, the inner side of the contact surface of the fan body and the frame body is embedded with a sealing rubber strip.
According to the further arrangement of the invention, the electric push rod is provided with an operation remote controller.
According to the invention, the sliding block is provided with the mounting seat for connecting the electric push rod; the mounting seat is provided with a pin for fixing the output end of the electric push rod.
The invention further provides a novel airtight door and window, comprising the novel airtight door and window structure as claimed in any one of claims 1 to 7.
In summary, the invention has the following beneficial effects:
1. under the promotion of electric putter, play the impulse force effect to the fan for the fan can rotate as the pivot relative framework for the hinge, and then open the fan, and when electric putter was retracted, the fan is closed relative framework, and at this moment, hold-down mechanism makes the fan atress even all around under electric putter's the effect of retrieving force, and rethread joint strip is inseparable to be closed on the framework, and then makes this door and window have good dampproofing sealing performance.
2. The briquetting is spherical gyro wheel design, and inlays and have self-lubricating copper sheathing, has wear-resisting, low noise, high strength, long service life's characteristics, and the extension spring is used for guaranteeing the in-process that the fan closed, and the briquetting remains the incline state all the time, and when the fan closed, link assembly drove the briquetting along the inclined plane downwardly compressing tightly in compressing tightly the chute for the fan can be inseparable relative framework is closed, in order to reach airtight dampproofing effect.
3. The sliding block is provided with a mounting seat for connecting the power supply push rod, the mounting seat is connected with the output end of the electric push rod through a pin, so that the electric push rod is convenient to maintain or replace, and meanwhile, the electric push rod is provided with an operation remote controller, so that the electric push rod is convenient to use in occasions with higher mounting positions of the airtight doors and windows.
Drawings
FIG. 1 is a schematic structural view of a novel airtight door and window in an embodiment of the present invention;
fig. 2 is a schematic diagram of connection relation among a fan body, a sealing rubber strip, an electric push rod, a sliding block, a kidney-shaped groove, a mounting seat, a support column, a pin and a tension spring in the novel airtight door and window in the embodiment of the invention;
fig. 3 is an enlarged view at a in fig. 1.
Reference numerals illustrate: 1. a frame; 2. a fan body; 3. a hinge; 4. an electric push rod; 5. a compressing mechanism; 51. a slide block; 511. a kidney-shaped groove; 512. a mounting base; 513. a pin; 52. briquetting; 521. self-lubricating copper bush; 53. a connecting rod assembly; 531. a first link; 532. a second link; 533. a third link; 54. a support column; 55. a cylindrical pin; 56. a tension spring; 57. a compacting chute; 6. and (5) sealing the adhesive tape.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explanation of the present invention and is not to be construed as limiting the present invention, and modifications to the present embodiment, which may not creatively contribute to the present invention as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present invention.
Examples:
as shown in fig. 1, a novel airtight door and window structure includes: a frame 1; a fan body 2 assembled with the frame body 1; a hinge 3 provided on one side of the frame 1 and connecting the frame 1 and the fan 2; the electric push rod 4 is assembled on one side of the frame body 1 far away from the fan body 2; the electric push rod 4 is used for pushing the fan body 2 to open or close relative to the frame body 1, the compression mechanism 5 is assembled with the electric push rod 4, the fan body 2 is tightly closed relative to the frame body 1 under the action of the electric push rod 4, the frame body 1 is formed by splicing and welding 10mmQ235 steel plates, the fan body 2 is formed by rolling 4mmQ235 steel plates, four corners of the frame body 1 and the fan body 2 are all in arc transition, and the hinge 3 is a heavy hinge 3 and can rotate freely and flexibly switch except for bearing the weight of the fan body 2; when the door and window are opened, the electric push rod 4 stretches out to drive the pressing mechanism 5 to move, so that the fan body 2 is opened, when the door and window are closed, the electric push rod 4 retracts, the fan body 2 is closed relative to the frame body 1, and the pressing mechanism 5 enables the fan body 2 to be tightly closed on the frame body 1, so that the airtight and dampproof effect is achieved.
As shown in fig. 1 to 3, the pressing mechanism 5 includes: a slider 51 fitted to one end of the output shaft of the electric putter 4; press blocks 52 provided on both sides of the frame 1 and on both sides of the frame 1 adjacent to the hinge 3; a link assembly 53 provided between the slider 51 and the pressing block 52; a support column 54 provided at one side of the fan body 2; a cylindrical pin 55 for connecting the link assembly 53, the pressing block 52, and the slider 51; and a tension spring 56 having one end connected to the slider 51 and the other end connected to the fan 2; the support column 54 is used for supporting the pressing block 52, the sliding block 51 and the connecting rod assembly 53, and a pressing chute 57 for clamping and embedding the pressing block 52 is formed on the periphery of the frame body 1; the sliding block 51 is cross-shaped, and the four directions are provided with waist-shaped grooves 511 for the cylindrical pins 55 to penetrate, and sealing rubber strips 6 are embedded inside the contact surface of the fan body 2 and the frame body 1.
In this embodiment, two pressing blocks 52 are uniformly arranged on two sides of the frame 1 along the pushing direction of the electric push rod 4, when the electric push rod 4 extends, the sliding block 51 is driven to move forward, at the moment, the tension spring 56 is compressed, the connecting rod assembly 53 is driven to move, so that the pressing blocks 52 slide out along an inclined plane from the inside of the pressing chute 57, after the pressing blocks 52 are loosened in place, the fan body 2 is driven to open outwards, the electric push rod 4 stops moving, and the opening movement is completed; when the electric push rod 4 retracts, the fan body 2 is driven to be closed backwards, after the fan body 2 is closed in place, the electric push rod 4 drives the sliding block 51 to retract under the action of tension force of the tension spring 56, the sliding block 51 and the connecting rod assembly 53 drive the pressing block 52 to compress tightly along the compressing chute 57, after the electric push rod 4 is compressed in place, the electric push rod 4 stops working, the window closing action is completed, and as the pressing block 52 is uniformly arranged on two sides of the frame body 1, the pressing block 52 uniformly pulls the periphery of the fan body 2, and then the sealing rubber strip 6 is tightly closed on the frame body 1, so that the door and window have good dampproof sealing performance. And compress tightly chute 57 and be the inclined plane for briquetting 52 can press more tightly in compressing tightly chute 57, wherein joint strip 6 further strengthens the seal between fan 2 and the framework 1, extension spring 56 is used for guaranteeing the in-process that fan 2 closed or opened, briquetting 52 remains the inclination throughout, support column 54 plays the supporting role to slider 51 and briquetting 52 and link assembly 53, and be equipped with cylindric lock 55 in the support column 54, make slider 51 and briquetting 52 and link assembly 53 can regard support column 54 as the pivot to rotate, and then realize driving briquetting 52 through electric putter 4 to compress tightly the operation of fan 2, and briquetting 52 head is spherical gyro wheel design, briquetting 52 rotation position inlays has self-lubricating copper bush 521, self-lubricating copper bush 521 has wear-resisting, low noise, high strength, long service life's advantage, make briquetting 52 more smooth and easy when compressing tightly chute 57 removes.
As shown in fig. 1 and 2, the link assembly 53 includes: a first link 531 for connecting the same-side pressing blocks 52; a second link 532 disposed at one side of the fan body 2 through a support column 54 and connected to the slider 51; and a third link 533 connected between the first link 531 and the second link 532; one end of the second connecting rod 532 is connected in the kidney-shaped groove 511 through a cylindrical pin 55, the other end of the second connecting rod 532 is connected with the third connecting rod 533 through the cylindrical pin 55, the electric push rod 4 drives the sliding block 51 to slide, the second connecting rod 532 is driven to rotate by taking the supporting column 54 as a rotating shaft, the third connecting rod 533, the first connecting rod 531 and the pressing block 52 rotate along with the rotation of the second connecting rod 532, and accordingly the pressing block 52 slides in the pressing chute 57, and the closing or opening action of the fan body 2 is achieved.
As shown in fig. 2, the slider 51 is formed with a mounting seat 512 connected with the power-driven push rod 4, the mounting seat 512 is connected with the output end of the power-driven push rod 4 through a pin 513, so that the power-driven push rod 4 is convenient to maintain or replace, and meanwhile, the power-driven push rod 4 is provided with an operation remote controller, so that the power-driven push rod is convenient to use in a place with a higher installation position of a closed door or window.
In order to solve the same problems, the embodiment of the invention also provides a novel airtight door and window, which comprises the novel airtight door and window structure in the embodiment.
The invention provides a novel airtight door and window structure and a door and window, and the working principle or process thereof is as follows: when the electric push rod 4 stretches out, the slide block 51 is driven to move forwards, the tension spring 56 is compressed at the moment, the connecting rod assembly 53 is driven to move, the pressing block 52 slides out along an inclined plane from the pressing chute 57, the fan body 2 is driven to open outwards after the pressing block 52 is loosened in place, the electric push rod 4 stops moving, and the opening movement is completed; when the electric push rod 4 retracts, the fan body 2 is driven to be closed backwards, after the fan body 2 is closed in place, the electric push rod 4 drives the sliding block 51 to retract under the action of tension force of the tension spring 56, the sliding block 51 and the connecting rod component 53 drive the pressing block 52 to compress tightly along the compressing chute 57, after the electric push rod 4 is compressed in place, the electric push rod 4 stops working, the window closing action is completed, and as the pressing block 52 and the compressing chute 57 are uniformly arranged on two sides of the frame body 1, the pressing block 52 uniformly pulls the periphery of the fan body 2, and the sealing rubber strip 6 is tightly closed on the frame body 1, so that the door and window have good dampproof sealing performance.
Claims (5)
1. A closed door and window structure, comprising: a frame (1);
a fan body (2) assembled with the frame body (1);
a hinge (3) arranged at one side of the frame (1) and used for connecting the frame (1) and the fan (2); the electric push rod (4) is assembled on one side, far away from the fan body (2), of the frame body (1) so as to push the fan body (2) to open or close relative to the frame body (1); the method comprises the steps of,
the compressing mechanism (5) is arranged at one side of the fan body (2) and is assembled with the electric push rod (4) so that the fan body (2) can be tightly closed relative to the frame body (1) under the action of the electric push rod (4);
the pressing mechanism (5) comprises:
a sliding block (51) which is arranged on one side of the fan body (2) and is assembled at one end of an output shaft of the electric push rod (4); pressing blocks (52) arranged on two sides of the fan body (2) adjacent to the hinge (3);
a link assembly (53) provided between the slider (51) and the pressing block (52);
a support column (54) arranged at one side of the fan body (2) and used for supporting the pressing block (52), the sliding block (51) and the connecting rod assembly (53);
a cylindrical pin (55) for connecting the link assembly (53), the pressing block (52), and the slider (51); the method comprises the steps of,
a tension spring (56) which is arranged at one side of the fan body (2) and one end of which is connected with the sliding block (51);
a pressing chute (57) which is used for the pressing block (52) to be clamped and embedded is arranged on the periphery of the frame body (1) so as to press the fan body (2) on the frame body (1);
the sliding block (51) is cross-shaped, and kidney-shaped grooves (511) for the cylindrical pins (55) to penetrate are formed in the four directions;
the link assembly (53) includes:
a first connecting rod (531) for connecting the pressing blocks (52) on the same side of the frame body (1); a second connecting rod (532) connected to the slider (51) and provided on one side of the fan body (2) through the support column (54); the method comprises the steps of,
a third link (533) provided between the first link (531) and the second link (532);
one end of the second connecting rod (532) is connected to the inside of the kidney-shaped groove (511) through the cylindrical pin (55), and the other end of the second connecting rod is connected to the third connecting rod (533);
the head of the pressing block (52) is designed as a spherical roller, and a self-lubricating copper sleeve (521) is inlaid at the rotating part of the pressing block (52).
2. The airtight door and window structure according to claim 1, wherein a sealing rubber strip (6) is embedded inside a contact surface of the fan body (2) and the frame body (1).
3. A closed door and window structure according to claim 1, characterized in that the electric push rod (4) is provided with an operating remote control.
4. The airtight door and window structure according to claim 1, wherein the slider (51) is provided with a mounting seat (512) for connecting the electric push rod (4);
the mounting seat (512) is provided with a pin (513) for fixing the output end of the electric push rod (4).
5. A sealed door and window comprising the sealed door and window structure according to any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810776504.0A CN108643789B (en) | 2018-07-11 | 2018-07-11 | Airtight door and window structure and door and window |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810776504.0A CN108643789B (en) | 2018-07-11 | 2018-07-11 | Airtight door and window structure and door and window |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108643789A CN108643789A (en) | 2018-10-12 |
| CN108643789B true CN108643789B (en) | 2024-02-23 |
Family
ID=63751771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810776504.0A Active CN108643789B (en) | 2018-07-11 | 2018-07-11 | Airtight door and window structure and door and window |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108643789B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109366465B (en) * | 2018-11-16 | 2023-03-03 | 深圳镁伽科技有限公司 | Robot |
| CN111058730B (en) * | 2019-10-17 | 2023-07-04 | 青岛泰科轨道车辆科技有限公司 | Subway flood gate and control method thereof |
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| JPH07259430A (en) * | 1994-03-15 | 1995-10-09 | Nippon Cable Syst Inc | Sliding window |
| JPH08226290A (en) * | 1995-02-21 | 1996-09-03 | Kajima Corp | Airtight door |
| EP0916794A2 (en) * | 1997-11-11 | 1999-05-19 | VELUX Industri A/S | A sliding window or door arrangement |
| JP2002303084A (en) * | 2001-04-10 | 2002-10-18 | Hajime Yokoyama | Device for sealing door opening of hanging sliding door |
| CN2908738Y (en) * | 2006-06-23 | 2007-06-06 | 中央储备粮徐州直属库 | Manhole sealing thermal insulation auto-door |
| CN201381770Y (en) * | 2009-02-24 | 2010-01-13 | 宫礼圣 | Closed moistureproof and burglarproof steel door window |
| CN101942956A (en) * | 2010-08-26 | 2011-01-12 | 无锡市东舟船舶附件有限公司 | Adjustable single-handle steel weather tight door |
| CN202731649U (en) * | 2012-08-14 | 2013-02-13 | 扬州龙鑫机械有限公司 | Hot air isolation door for thermal power station coal mill |
| CN205532037U (en) * | 2016-01-25 | 2016-08-31 | 温州维科生物实验设备有限公司 | Sliding door and window |
| CN206386030U (en) * | 2017-01-18 | 2017-08-08 | 南京恒威防护设备有限公司 | A kind of closed guard gate |
| CN107100509A (en) * | 2017-05-31 | 2017-08-29 | 杭州钱江人防设备有限公司 | Subway cleaning type enters air draft airtight blast door and its long-range control method |
| CN208792928U (en) * | 2018-07-11 | 2019-04-26 | 深圳市龙电兴业科技有限公司 | A kind of novel closed door and window structure and door and window |
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| JPH07259430A (en) * | 1994-03-15 | 1995-10-09 | Nippon Cable Syst Inc | Sliding window |
| JPH08226290A (en) * | 1995-02-21 | 1996-09-03 | Kajima Corp | Airtight door |
| EP0916794A2 (en) * | 1997-11-11 | 1999-05-19 | VELUX Industri A/S | A sliding window or door arrangement |
| JP2002303084A (en) * | 2001-04-10 | 2002-10-18 | Hajime Yokoyama | Device for sealing door opening of hanging sliding door |
| CN2908738Y (en) * | 2006-06-23 | 2007-06-06 | 中央储备粮徐州直属库 | Manhole sealing thermal insulation auto-door |
| CN201381770Y (en) * | 2009-02-24 | 2010-01-13 | 宫礼圣 | Closed moistureproof and burglarproof steel door window |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108643789A (en) | 2018-10-12 |
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