CN108625750B - Full-automatic door opening and closing device for monitoring fireproof door - Google Patents
Full-automatic door opening and closing device for monitoring fireproof door Download PDFInfo
- Publication number
- CN108625750B CN108625750B CN201810477875.9A CN201810477875A CN108625750B CN 108625750 B CN108625750 B CN 108625750B CN 201810477875 A CN201810477875 A CN 201810477875A CN 108625750 B CN108625750 B CN 108625750B
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- Prior art keywords
- gear
- door
- main arm
- motor
- hydraulic
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Classifications
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- 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
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- 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
- E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
- E05F15/611—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings
- E05F15/614—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by meshing gear wheels, one of which being mounted at the wing pivot axis; operated by a motor acting directly on the wing pivot axis
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/70—Power-operated mechanisms for wings with automatic actuation
- E05F15/72—Power-operated mechanisms for wings with automatic actuation responsive to emergency conditions, e.g. fire
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
- E05F3/04—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes
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- 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
Landscapes
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Power-Operated Mechanisms For Wings (AREA)
- Special Wing (AREA)
Abstract
The invention discloses a full-automatic door opening and closing device for monitoring a fireproof door, which comprises a driving arm, a shell, a motor, a fireproof door monitor, a gear box, a hydraulic door closing controller, a main arm mandrel and a main arm mandrel brake, wherein the shell is fixed on a door frame; the output shaft of the motor is meshed with a large gear of a connecting shaft gear in the gear box through a motor gear, a small gear of the connecting shaft gear is meshed with a detachable transition gear, and the other side of the detachable transition gear is meshed with a motor door opening transmission gear positioned in the middle of a main arm mandrel; the hydraulic door closing transmission gear positioned at the upper end of the main arm spindle is meshed with the rack in the hydraulic door closing monitor; and the sleeve type braking gear positioned at the lower end of the main arm mandrel is rotationally connected with the main arm mandrel brake. The control module is small, convenient to set, and capable of controlling the closing and opening of the fireproof door through integrated design.
Description
Technical Field
The invention relates to the technical field of fire-fighting equipment, in particular to a full-automatic door opening and closing device for monitoring a fireproof door.
Background
The door closer is a spring-like hydraulic device arranged on the door head, and has the main purposes of automatically closing the door through compression and release after the door is opened, and has the function of a spring-like door, so that the door can be ensured to be accurately and timely closed to an initial position after being opened, thereby restricting the spread of fire and ventilation in a building. At present, the door closer has generally been used on emergency exit, burglary-resisting door, bathroom door, kitchen door, screen door, cabinet door and window, for the fire door general work in the normal close state among the prior art, but as the people stream, the frequent public way of commodity circulation, the normal close prevents fire door use inconvenient to lead to preventing fire door's artificial damage or life to shorten easily, normally install normally open type door closer in these places, be in the open condition under the normal condition, make things convenient for personnel to come in and go out, can self-closing after the conflagration breaks out, stops the conflagration to spread.
The door closer usually adopts a hydraulic structure, has obvious leakage, influences the appearance, frequently leaks oil, is environment-friendly, is unreasonable in stress, damages a door frame and a door leaf, cannot realize an automatic door opening or random stopping function, and has the characteristics of inconvenient operation and the like.
The prior art discloses the patent number: the normally open fireproof door of CN207048627U is characterized in that the patent controls the closing of the fireproof door through the temperature sensing detector, the smoke sensing detector and the audible-visual annunciator, and the patent can effectively control the closing of the fireproof door, but the arranged components are more, the structure is complex, the cost is high, the overhaul is troublesome, and the automatic opening of the fireproof door cannot be controlled.
Disclosure of Invention
Therefore, the invention aims to overcome the defects of the prior art, and provides the full-automatic door opening and closing device for monitoring the fireproof door, which has the advantages of small control module, convenient installation, low cost, strong functional stability and compact structure and can control the closing and opening of the fireproof door.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the full-automatic door opening and closing device for monitoring the fireproof door comprises a driving arm, a shell, a motor, a fireproof door monitor, a gear box, a hydraulic door closing controller, a main arm mandrel and a main arm mandrel brake, wherein the shell is fixed on a door frame; the output shaft of the motor is meshed with a large gear of a connecting shaft gear in the gear box through a motor gear, a small gear of the connecting shaft gear is meshed with one side of a detachable transition gear, and the other side of the detachable transition gear is meshed with a motor door opening transmission gear positioned in the middle of a main arm mandrel; the hydraulic door closing transmission gear at the upper end of the main arm spindle is meshed with the rack in the hydraulic door closing monitor, one end of the rack is connected with the powerful spring, the other end of the powerful spring is fixedly connected with the shell, and the rack is in sliding connection with the inner wall of the hydraulic door closing controller through the piston; the sleeve type braking gear positioned on the lower shaft section of the main arm spindle close to the inner wall of the shell is rotationally connected with the main arm spindle brake, one end of the main arm spindle positioned outside the shell is fixedly connected with the driving arm through a mounting hole, and the control signal output end of the fire door monitor is connected with the motor switch controller.
Preferably, the motor is a servo motor.
Preferably, the large gear of the coupling gear is located above the small gear.
Preferably, the hydraulic door closing controller is filled with hydraulic oil.
Preferably, the main arm spindle is connected with the hydraulic door closing controller through a sealing device.
Preferably, a positioning opening is formed in one side of the sleeve type braking gear.
Preferably, a cylindrical braking buckle matched with the positioning opening is arranged on the outer side of the main arm spindle brake.
Preferably, a manual switch is arranged on the main arm spindle brake.
Preferably, the detachable transition gear is connected with one end of an adjusting connection plate through a bearing, an electromagnet is fixed at the other end of the adjusting connection plate, the middle part of the adjusting connection plate is rotationally hinged on the inner wall of the shell, a pressure spring base is arranged on the adjusting connection plate between the detachable transition gear and the middle hinging point, the pressure spring base is fixedly arranged on the inner wall of the shell, and a metal block for adsorbing the electromagnet is arranged on the inner wall of the shell close to the electromagnet; the energizing electromagnetic switch of the electromagnet is connected with the control signal output end of the fireproof door monitor through a control line.
Preferably, the control signal input and output end and the power supply end of the fire door monitor are respectively connected with the remote controller and the power supply.
The beneficial effects of the invention are as follows: the gear box is additionally arranged, the gear is driven by the motor to drive the main arm spindle, and the main arm spindle drives the fireproof door to perform opening action; the separable transition gear with a separable structure can be used for opening and closing the fireproof door when the separable transition gear is in different states of closing and separating; the power-on state of the electromagnet controls different states of the separable transition gear; the main arm spindle brake controls the main arm spindle to stop at a fixed position when the opening angle of the fireproof door reaches a preset angle; the hydraulic door closing controller is pressurized in the process of opening the fireproof door, so as to store energy for automatic door closing action, thereby being beneficial to closing the fireproof door; the hydraulic oil plays a role in slowing down the rebound speed, and the hydraulic door closing controller is of a closed structure, so that oil leakage is avoided, and the hydraulic door closing controller is environment-friendly and attractive; the invention has reasonable stress, prolongs the service life of the fireproof door, has strong usability, small control module, simple setting, low cost and low power consumption, is integrally designed, has the function of automatically opening and closing the fireproof door, and can set any opening angle of the fireproof door according to the requirement.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic structural view of a gearbox;
FIG. 3 is a side view of the gearbox;
fig. 4 is a schematic diagram of the connection of the present invention.
In the figure: the device comprises a driving arm 1, an electromagnet 2, a casing 3, a motor 4, a fire door monitor 5, a motor gear 6, a connecting shaft gear 7, a large gear 8, a small gear 9, a detachable transition gear 10, an adjusting connecting plate 11, a gear box 12, a main arm spindle 13, a hydraulic door closing transmission gear 14, a motor door opening transmission gear 15, a sleeve type braking gear 16, a main arm spindle brake 17, a hydraulic door closing controller 18, a rack 19, a powerful spring 20, a mounting hole 21 and a pressure spring base 22.
Detailed Description
The invention is further described below with reference to the drawings and examples.
Examples
As shown in fig. 1-4, a full-automatic door opening and closing device for monitoring a fire door comprises a driving arm 1, a machine shell 3, a motor 4 positioned in the machine shell 3, a fire door monitor 5 positioned below the motor 4, a gear box 12, a hydraulic door closing controller 18, a main arm spindle 13 and a main arm spindle brake 17; an output shaft of the motor 4 is meshed with a large gear 8 of a connecting shaft gear 7 in a gear box 12 through a motor gear 6, a small gear 9 of the connecting shaft gear 7 is meshed with one side of a detachable transition gear 10, the other side of the detachable transition gear 10 is meshed with a motor door opening transmission gear 15 positioned in the middle of a main arm mandrel 13, the detachable transition gear 10 is connected with one end of an adjusting connecting plate 11 through a bearing, the other end of the adjusting connecting plate 11 is fixedly provided with an electromagnet 2, the middle part of the adjusting connecting plate 11 is rotationally hinged on the inner wall of a shell 3, a pressure spring base 22 is arranged on the adjusting connecting plate 11 positioned between the detachable transition gear 10 and a middle hinging point, the pressure spring base 22 is fixedly arranged on the inner wall of the shell 3, and a metal block for adsorbing the electromagnet 2 is arranged on the inner wall of the shell close to the electromagnet 2; the electrified electromagnetic switch of the electromagnet 2 is connected with the control signal output end of the fireproof door monitor 5 through a control line; the hydraulic door closing transmission gear 14 positioned at the upper end of the main arm spindle 13 is meshed with the rack 19 in the hydraulic door closing monitor 18, one end of the rack 19 is connected with the powerful spring 20, the other end of the powerful spring 20 is fixedly connected with the shell 3, and the rack 19 is in sliding connection with the inner wall of the hydraulic door closing controller 18 through a piston; the sleeve type brake gear 16 positioned at the lower end of the main arm spindle 13 is rotationally connected with the main arm spindle brake 17; one side of the sleeve type braking gear 16 is provided with a positioning opening, the outer side of the main arm spindle brake 17 is provided with a cylindrical braking buckle matched with the positioning opening, one end of the main arm spindle 13, which is positioned outside the casing 3, is fixedly connected with the driving arm 1 through a mounting hole 21, the casing 3 is fixed on a door frame, the driving arm 1 is fixed on the door plate, the control signal output end of the fireproof door monitor 5 is connected with the motor switch controller, and the control signal input and output end and the power supply end of the fireproof door monitor 5 are respectively connected with the remote controller and the power supply.
Further, the motor 4 is a servo motor
Further, the large gear 8 of the coupling gear 7 is located above the small gear 9.
Further, the hydraulic door closer controller 18 is filled with hydraulic oil.
Further, a mechanical seal is made between the main arm spindle 13 and the hydraulic gate controller 18.
The present invention is further explained:
when the fire door monitor 5 controls the fire door to be opened, the motor 4 is started, the output shaft of the motor 4 drives the motor gear 6 to rotate, the motor gear 6 drives the detachable transition gear 10, the detachable transition gear 10 drives the motor door opening transmission gear 15, and then the main arm spindle 13 is driven to rotate towards the opened angle, when the main arm spindle 13 drives the driving arm 1 to open the fire door to reach the preset position, the motor 4 is automatically powered off, and simultaneously, a cylindrical braking buckle on the main arm spindle brake 17 can automatically clamp the main arm spindle 13, the main arm spindle brake 17 controls the main arm spindle 13 to stop at the fixed position, and at the moment, the electromagnet 2 of the detachable transition gear 10 is controlled to be electrified and adsorbed together with a metal block, so that the detachable transition gear 10 is in a closed state. In the process, the hydraulic door closing controller 18 carries out pressurization to store energy for the automatic door closing action of the fireproof door.
When the fireproof door monitor 5 controls the fireproof door to be closed, the fireproof door monitor 5 is powered off, a cylindrical brake buckle on a main arm spindle brake 17 automatically bounces off, a hydraulic door closing controller 18 drives a main arm spindle 13 to rotate towards the closed angle, the main arm spindle drives a driving arm to close the fireproof door, an electromagnet 2 of a separable transition gear 10 is controlled to be powered off, the separable transition gear 10 is in a separated state under the action of a pressure spring base 22, and the fireproof door is automatically closed under the action of the thrust of the hydraulic door closing controller 18; under the action of manual door closing force, the cylindrical brake buckle on the main arm mandrel brake 17 can be forcibly sprung out, so that the manual door closing function is realized.
The device elements in the above embodiments are conventional device elements unless otherwise specified, and the structural arrangement, operation or control modes in the embodiments are conventional arrangement, operation or control modes in the art unless otherwise specified.
Finally, it is noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present invention, and that other modifications and equivalents thereof by those skilled in the art should be included in the scope of the claims of the present invention without departing from the spirit and scope of the technical solution of the present invention.
Claims (8)
1. A full-automatic door closer that opens and shuts for monitoring prevent fire door, includes actuating arm and casing, the casing is fixed on the door frame, the actuating arm is fixed on the door plant, its characterized in that: the hydraulic door closing device also comprises a motor positioned in the shell, a fireproof door monitor positioned below the motor, a gear box, a hydraulic door closing controller, a main arm spindle and a main arm spindle brake; the output shaft of the motor is meshed with a large gear of a connecting shaft gear in the gear box through a motor gear, a small gear of the connecting shaft gear is meshed with one side of a detachable transition gear, and the other side of the detachable transition gear is meshed with a motor door opening transmission gear positioned in the middle of a main arm mandrel; the hydraulic door closing transmission gear at the upper end of the main arm spindle is meshed with the rack in the hydraulic door closing monitor, one end of the rack is connected with the powerful spring, the other end of the powerful spring is fixedly connected with the shell, and the rack is in sliding connection with the inner wall of the hydraulic door closing controller through the piston; the sleeve type braking gear which is positioned on the main arm spindle and close to the lower shaft section of the inner wall of the shell is in rotary connection with the main arm spindle brake, one end of the main arm spindle, which is positioned outside the shell, is fixedly connected with the driving arm through a mounting hole, and one side of the sleeve type braking gear is provided with a positioning opening; the outer side of the main arm spindle brake is provided with a cylindrical brake buckle matched with the positioning opening; and the control signal output end of the fire door monitor is connected with the motor switch controller.
2. A fully automatic door closer for monitoring fire doors according to claim 1, wherein: the motor is a servo motor.
3. A fully automatic door closer for monitoring fire doors according to claim 1, wherein: the large gear of the connecting shaft gear is positioned above the small gear.
4. A fully automatic door closer for monitoring fire doors according to claim 1, wherein: and the hydraulic door closing controller is filled with hydraulic oil.
5. A fully automatic door closer for monitoring fire doors according to claim 1, wherein: the main arm spindle is connected with the hydraulic door closing controller through a sealing device.
6. A fully automatic door closer for monitoring fire doors according to claim 1, wherein: and a manual switch is arranged on the main arm spindle brake.
7. A fully automatic door closer for monitoring fire doors according to claim 1, wherein: the detachable transition gear is connected with one end of the adjusting connecting plate through a bearing, an electromagnet is fixed at the other end of the adjusting connecting plate, the middle part of the adjusting connecting plate is hinged on the inner wall of the shell in a rotating way, a pressure spring base is arranged on the adjusting connecting plate between the detachable transition gear and the middle hinging point, the pressure spring base is fixedly arranged on the inner wall of the shell, and a metal block for adsorbing the electromagnet is arranged on the inner wall of the shell close to the electromagnet; the energizing electromagnetic switch of the electromagnet is connected with the control signal output end of the fireproof door monitor through a control line.
8. A fully automatic door closer for monitoring fire doors according to claim 1, wherein: and the control signal input and output end and the power supply end of the fireproof door monitor are respectively connected with the remote controller and the power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810477875.9A CN108625750B (en) | 2018-05-18 | 2018-05-18 | Full-automatic door opening and closing device for monitoring fireproof door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810477875.9A CN108625750B (en) | 2018-05-18 | 2018-05-18 | Full-automatic door opening and closing device for monitoring fireproof door |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108625750A CN108625750A (en) | 2018-10-09 |
| CN108625750B true CN108625750B (en) | 2023-06-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810477875.9A Active CN108625750B (en) | 2018-05-18 | 2018-05-18 | Full-automatic door opening and closing device for monitoring fireproof door |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108625750B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110295811B (en) * | 2019-08-14 | 2024-01-30 | 深圳市中天明消防科技有限公司 | Temperature control wind bracing mechanism |
| CN113668975B (en) * | 2021-08-25 | 2023-05-23 | 中车长春轨道客车股份有限公司 | End door driving mechanism of railway vehicle |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0004677A1 (en) * | 1978-04-11 | 1979-10-17 | GTE Gesellschaft für Technische Entwicklung AG | Device for the sealing and shutting of fire-proof closures |
| DE3638208A1 (en) * | 1986-11-08 | 1988-05-11 | Bks Gmbh | Overhead door closer with stop device |
| DE19526060A1 (en) * | 1995-07-17 | 1997-01-23 | Geze Gmbh & Co | Door closer with force-transmitting linkage |
| KR20060079933A (en) * | 2005-01-04 | 2006-07-07 | 민덕기 | Door fixing device |
| WO2006096142A2 (en) * | 2005-03-07 | 2006-09-14 | Doorson D.O.O. | Automatic fire door |
| WO2010062025A1 (en) * | 2008-11-27 | 2010-06-03 | Moon Hong Sik | Separate-type fire door closing apparatus for a door check |
| EP2206867A2 (en) * | 2009-01-09 | 2010-07-14 | DORMA GmbH + Co. KG | Door actuator for actuating a door leaf |
| CN201771384U (en) * | 2010-02-02 | 2011-03-23 | 肖贻勇 | Multifunctional automatic door-closing releaser of fireproof door |
| KR20120043321A (en) * | 2010-10-26 | 2012-05-04 | 양재윤 | Closing force assistant device for door closer |
| KR20120091574A (en) * | 2011-02-09 | 2012-08-20 | 김기환 | Door-closer for prevention of fire |
| JP2013151818A (en) * | 2012-01-25 | 2013-08-08 | Lixil Corp | Door closer and door panel |
| CN105683474A (en) * | 2013-10-18 | 2016-06-15 | 美国耶鲁安全公司 | Apparatus for providing constant torque output from a door closer or operator |
| CN205876010U (en) * | 2016-07-27 | 2017-01-11 | 梁林坤 | Linkage open in usual prevents that fire door closes door gear |
| CN106522721A (en) * | 2016-08-30 | 2017-03-22 | 瓯宝安防科技股份有限公司 | Fireproof door closing device |
| CN106869724A (en) * | 2017-03-27 | 2017-06-20 | 浙江省现代建筑设计研究院有限公司 | A kind of Intelligent Measurement from put out a fire formula fire resistant doorsets |
| CN206707493U (en) * | 2017-04-14 | 2017-12-05 | 肇庆市裕兴门控有限公司 | Hidden type hydraulic fire-proof door closer |
| CN208220565U (en) * | 2018-05-18 | 2018-12-11 | 郑州金特莱电子有限公司 | It is a kind of for monitoring the full-automatic door closer of fire resistant doorsets |
-
2018
- 2018-05-18 CN CN201810477875.9A patent/CN108625750B/en active Active
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0004677A1 (en) * | 1978-04-11 | 1979-10-17 | GTE Gesellschaft für Technische Entwicklung AG | Device for the sealing and shutting of fire-proof closures |
| DE3638208A1 (en) * | 1986-11-08 | 1988-05-11 | Bks Gmbh | Overhead door closer with stop device |
| DE19526060A1 (en) * | 1995-07-17 | 1997-01-23 | Geze Gmbh & Co | Door closer with force-transmitting linkage |
| KR20060079933A (en) * | 2005-01-04 | 2006-07-07 | 민덕기 | Door fixing device |
| WO2006096142A2 (en) * | 2005-03-07 | 2006-09-14 | Doorson D.O.O. | Automatic fire door |
| WO2010062025A1 (en) * | 2008-11-27 | 2010-06-03 | Moon Hong Sik | Separate-type fire door closing apparatus for a door check |
| EP2206867A2 (en) * | 2009-01-09 | 2010-07-14 | DORMA GmbH + Co. KG | Door actuator for actuating a door leaf |
| CN201771384U (en) * | 2010-02-02 | 2011-03-23 | 肖贻勇 | Multifunctional automatic door-closing releaser of fireproof door |
| KR20120043321A (en) * | 2010-10-26 | 2012-05-04 | 양재윤 | Closing force assistant device for door closer |
| KR20120091574A (en) * | 2011-02-09 | 2012-08-20 | 김기환 | Door-closer for prevention of fire |
| JP2013151818A (en) * | 2012-01-25 | 2013-08-08 | Lixil Corp | Door closer and door panel |
| CN105683474A (en) * | 2013-10-18 | 2016-06-15 | 美国耶鲁安全公司 | Apparatus for providing constant torque output from a door closer or operator |
| CN205876010U (en) * | 2016-07-27 | 2017-01-11 | 梁林坤 | Linkage open in usual prevents that fire door closes door gear |
| CN106522721A (en) * | 2016-08-30 | 2017-03-22 | 瓯宝安防科技股份有限公司 | Fireproof door closing device |
| CN106869724A (en) * | 2017-03-27 | 2017-06-20 | 浙江省现代建筑设计研究院有限公司 | A kind of Intelligent Measurement from put out a fire formula fire resistant doorsets |
| CN206707493U (en) * | 2017-04-14 | 2017-12-05 | 肇庆市裕兴门控有限公司 | Hidden type hydraulic fire-proof door closer |
| CN208220565U (en) * | 2018-05-18 | 2018-12-11 | 郑州金特莱电子有限公司 | It is a kind of for monitoring the full-automatic door closer of fire resistant doorsets |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108625750A (en) | 2018-10-09 |
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