CN112854951B - Door closer sliding groove structure, explosion-proof door closer and normally-open fireproof door - Google Patents
Door closer sliding groove structure, explosion-proof door closer and normally-open fireproof door Download PDFInfo
- Publication number
- CN112854951B CN112854951B CN202110033137.7A CN202110033137A CN112854951B CN 112854951 B CN112854951 B CN 112854951B CN 202110033137 A CN202110033137 A CN 202110033137A CN 112854951 B CN112854951 B CN 112854951B
- Authority
- CN
- China
- Prior art keywords
- shell
- protrusion
- door closer
- door
- explosion
- 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.)
- Active
Links
Images
Classifications
-
- 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
-
- 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
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Special Wing (AREA)
Abstract
The invention relates to the technical field of door closers, in particular to a door closer sliding groove structure, an explosion-proof door closer and a normally-open fireproof door, wherein the door closer sliding groove structure comprises: the first shell is in a strip shape, and an opening is formed in one side surface of the first shell along the length direction of the first shell; the second shell is arranged at one end of the first shell and comprises a fixed seat and a cover body, wherein a placing cavity is formed in the fixed seat and the cover body, and the wall thicknesses of the fixed seat and the cover body and the connection strength of the fixed seat and the cover body meet the explosion-proof requirement; an electromagnet mechanism is arranged in the second shell in the direction towards the first shell, and a transmission mechanism is arranged in the first shell close to the second shell; according to the invention, through the arrangement of the explosion-proof box, the damage to the cable in the chute structure in the prior art is prevented, and the safety performance of the fireproof door is improved.
Description
Technical Field
The invention relates to the technical field of door closers, in particular to a door closer sliding groove structure, an explosion-proof door closer and a normally-open fireproof door.
Background
The fireproof door has the function of establishing a fireproof partition, is automatically closed when a fire disaster occurs, limits the fire condition within a certain range or delays the spreading speed of the fire disaster through the partition of the fireproof door, and strives for precious time for fire fighting. The electric door closer plays a crucial role in the electric door closer.
An electric door closer in the related art comprises a chute fixed on a door frame, a hydraulic machine body fixed on the door and a connecting rod, wherein one end of the connecting rod is fixedly connected with the hydraulic machine body, the other end of the connecting rod is rotatably connected with a sliding block arranged on the chute in a sliding way, and a clamping hook structure driven by an electromagnet suction mechanism is arranged in the chute so as to fix or release the sliding block; the fire door can be freely opened and closed at ordinary times, and when a fire disaster happens, the sliding block is fixed through the action of the electromagnet, so that the fire door is kept closed.
However, the sliding groove in the fireproof door is often provided with a cable, and the cable is easy to lose effectiveness under high-temperature or high-pressure environment, so that the electromagnet loses adsorption force, and the fireproof door is caused to lose effectiveness.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is already known to a person skilled in the art.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the utility model provides a door closer spout structure, explosion-proof type door closer and fire door is prevented to open in usual, improve the security performance of preventing fire door.
In order to achieve the purpose, the invention adopts the technical scheme that:
in one aspect, a door closer chute structure is provided, comprising:
the first shell is in a strip shape, an opening is formed in one side surface of the first shell along the length direction of the first shell, the width of the opening is smaller than that of the first shell on the side surface, two side walls of the opening form a sliding track of the sliding block, and a locking mechanism for fixing the sliding block is placed in the space inside the first shell;
the second shell is arranged at one end of the first shell and comprises a fixed seat and a cover body, wherein a placing cavity is formed in the fixed seat and the cover body, and the wall thicknesses of the fixed seat and the cover body and the connection strength of the fixed seat and the cover body meet the explosion-proof requirement;
the electromagnetic mechanism is arranged in the second shell in the direction towards the first shell, a transmission mechanism is arranged in the first shell and close to the second shell, the transmission mechanism comprises a fixed base, a transmission piece and a return spring, the fixed base is fixed in the first shell, the transmission piece is arranged on the fixed base in a manner of relatively sliding along the length direction of the first shell, the return spring is sleeved on the transmission piece, one end of the return spring is connected with the transmission piece, and the other end of the return spring is abutted against the fixed base; when the electromagnet mechanism is electrified, the transmission piece moves towards the direction close to the second shell; when the electromagnet mechanism is powered off, the transmission piece moves towards the direction far away from the second shell.
Further, the fixing seat faces the side wall of the first shell direction, an installation lug is arranged on the side wall of the first shell direction, the width of the installation lug is slightly smaller than the distance between the two inner walls of the first shell in the width direction, the length of the installation lug is smaller than the distance between the two opposite inner walls of the first shell in the height direction, the distance between the installation lug and the first shell installation surface is equal to the wall thickness of the first shell, and when the first shell is clamped on the installation lug, the side wall of the first shell and the installation surface of the fixing seat are arranged in a coplanar mode.
Furthermore, the side wall of the fixing seat facing the direction of the first shell is provided with a first lug, a second lug and a third lug, the widths of the first lug, the second lug and the third lug are equal, the distance between the fixing seat and the installation surface is equal to the wall thickness of the first shell, the widths of the first lug, the fixing seat and the fixing seat are slightly smaller than the distance between the inner walls of the two side walls in the width direction of the first shell, the second lug is arranged between the first lug and the third lug at intervals, and the distance between the second lug and the first lug and the distance between the second lug and the third lug are slightly larger than the wall thickness of the first shell.
Further, the driving medium includes connecting rod and actuation board, the connecting rod is in but the relative slip sets up on the PMKD, the actuation board vertical fixation is in the connecting rod is close to the one end of second casing, the size precision of actuation board satisfies gliding required precision in the first casing.
Furthermore, the connecting rod is provided with a thread and a nut screwed on the thread, and one end of the return spring abuts against the fixed base and the other end abuts against the nut.
Furthermore, the electromagnet mechanism comprises a circuit board and a thrust electromagnet fixed on the circuit board, and the shape of the circuit board is arranged in a shape of the placing cavity of the fixed seat.
In another aspect, the invention provides an explosion-proof door closer, which comprises the door closer chute structure, a rocker arm and a hydraulic machine body;
the door closer sliding groove structure is fixed on the door frame, the hydraulic machine body is fixed on the door plate, one end of the rocker arm is connected with a rotating shaft of the hydraulic machine body, and the other end of the rocker arm is rotatably connected with a sliding block on the door closer sliding groove structure.
In another aspect, the invention further provides a normally open fireproof door, and the explosion-proof door closer is mounted on the fireproof door.
The invention has the beneficial effects that: according to the invention, the chute structure is in the form of the first shell and the second shell which are separated, the electromagnet mechanism is arranged in the second shell with an explosion-proof function, and the power output from the second shell is transmitted through the transmission mechanism arranged in the first shell.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a door closer chute structure according to an embodiment of the present invention;
FIG. 2 is an exploded view of the door closer chute structure of FIG. 1 in accordance with an embodiment of the present invention;
FIG. 3 is a schematic diagram of an exploded connection of a first housing and a second housing in an embodiment of the invention;
FIG. 4 is a schematic structural diagram of a transmission mechanism according to an embodiment of the present invention;
FIG. 5 is an exploded view of the second housing in an embodiment of the present invention;
figure 6 is a schematic view of the fire door with the explosion-proof door closer installed according to the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The door closer chute structure 100 shown in fig. 1 to 5 includes: a first housing 10 and a second housing 20, wherein:
the first shell 10 is in a strip shape, an opening 11 is formed in one side surface of the first shell along the length direction of the first shell, the width of the opening 11 is smaller than that of the first shell 10 on the side surface, two side walls of the opening 11 form a sliding track of the sliding block, and a locking mechanism for fixing the sliding block is placed in the space inside the first shell 10; it should be noted that the first casing 10 may be made of alloy steel, or may be formed by bending a plate, and when the plate is bent, the opening 11 is the distance between two ends of the plate; in addition, the sliding block sliding on the first casing 10 and the mechanism for locking the sliding block are both in the prior art, and for example, the sliding block may be a locking hook rotatably disposed in the first casing 10, and the sliding block may be locked on the opening 11 when the locking hook is actuated, which is not described herein again.
The second shell 20 is arranged at one end of the first shell 10, the second shell 20 comprises a fixed seat 21 and a cover 22, wherein the fixed seat 21 and the cover 22 are internally provided with a placing cavity, and the wall thickness of the fixed seat 21 and the wall thickness of the cover 22 and the connection strength of the fixed seat and the cover 22 meet the explosion-proof requirement; in the embodiment of the present invention, regarding the explosion-proof rating of the second housing 20, when the current is less than 250A, the explosion-proof rating is iibt 6; at 250A to 500A, the explosion-proof grade is IIBT 4, namely the wall thickness and the connection strength of the fixed seat 21 and the cover body 22 are required to be determined according to the current.
The electromagnet mechanism 30 is arranged in the second housing 20 in a direction towards the first housing 10, the transmission mechanism 40 is arranged in the first housing 10 close to the second housing 20, the transmission mechanism 40 comprises a fixed base 41, a transmission member 42 and a return spring 43, the fixed base 41 is fixed in the first housing 10, the transmission member 42 is arranged on the fixed base 41 in a manner of relatively sliding along the length direction of the first housing 10, the return spring 43 is sleeved on the transmission member 42, one end of the return spring is connected with the transmission member 42, and the other end of the return spring is abutted against the fixed base 41; when the electromagnet mechanism 30 is energized, the transmission member 42 moves toward the direction approaching the second housing 20; when the electromagnet mechanism 30 is de-energized, the transmission member 42 moves in a direction away from the second housing 20.
In the specific implementation of the present invention, the force applied to the transmission mechanism 40 near the second housing 20 is realized by switching on and off the electromagnet arranged in the second housing 20, that is, when the electromagnet mechanism 30 is powered on, the electromagnet mechanism 30 generates a magnetic force on the transmission member 42, and the transmission member 42 is made of a ferromagnetic material such as steel, and the transmission member 42 moves toward the second housing 20 under the suction force of the electromagnet mechanism 30, so as to drive the locking mechanism connected to the transmission mechanism 40 to act; because drive mechanism 40 is mechanical mechanism, it all adopts high temperature resistant fire prevention material to compare with prior art, improved the security of door closer greatly, can guarantee to prevent closing of fire door as far as possible, thereby provide valuable rescue time for the conflagration rescue.
In the above embodiment, the chute structure is provided as the first housing 10 and the second housing 20 which are separated, the electromagnet mechanism 30 is provided in the second housing 20 having the explosion-proof function, and the power output from the second housing 20 is transmitted through the transmission mechanism 40 provided in the first housing 10, so that the damage to the cable in the chute structure in the prior art is prevented, and the safety performance of the fire door is improved.
Because the first housing 10 and the second housing 20 are separately arranged, on the basis of the above embodiment, in order to facilitate quick and effective positioning of the first housing 10 and the second housing 20 during installation, in the embodiment of the present invention, the side wall of the fixing base 21 facing the direction of the first housing 10 is provided with an installation bump (not shown in the figure), the width of the installation bump is slightly smaller than the distance between two inner walls in the width direction of the first housing 10, the length of the installation bump is smaller than the distance between two opposite inner walls in the height direction of the first housing 10, the distance between the installation bump and the installation surface of the first housing 10 is equal to the wall thickness of the first housing 10, and when the first housing 10 is clamped on the installation bump, the side wall of the first housing 10 and the installation surface of the fixing base 21 are arranged in a coplanar manner. By providing the mounting projections, convenience and accuracy in mounting the first and second housings 10 and 20 are improved.
As a preference of the above embodiment, as shown in fig. 3, a side wall of the fixing seat 21 facing the direction of the first housing 10 has a first protrusion 21a, a second protrusion 21b and a third protrusion 23c, the widths of the three are equal and the distance between the three and the mounting surface of the fixing seat 21 is equal to the wall thickness of the first housing 10, the widths of the three are slightly smaller than the inner wall distance between the two side walls of the first housing 10 in the width direction, the second protrusions 21b are arranged between the first protrusion 21a and the third protrusion 23c at intervals, and the distance between the second protrusion 21b and the first protrusion 21a and the distance between the second protrusion 21b and the third protrusion 23c are slightly larger than the wall thickness of the first housing 10. Through the setting of second lug 21b, realize the adjustment to first casing 10 different mounted position to adaptability when having improved the installation, as shown in fig. 3, opening 11 of first casing 10 can set up downwards, also can rotate 180 degrees and set up upwards, and under these two kinds of circumstances, second lug 21b can play the effect of location.
In the embodiment of the present invention, as shown in fig. 4, the transmission member 42 includes a connecting rod 42a and a suction plate 42b, the connecting rod 42a is slidably disposed on the fixed base plate, the suction plate 42b is vertically fixed on one end of the connecting rod 42a close to the second casing 20, and the size precision of the suction plate 42b meets the precision requirement of sliding in the first casing 10. The attraction plate 42b is arranged at the end part of the connecting rod 42a, and the force bearing area of the transmission member 42 is increased through the plate-shaped arrangement, and it should be noted that the electromagnetic mechanism in the embodiment of the present invention adopts a strong electromagnet because a wall thickness is arranged between the electromagnetic mechanism and the attraction plate 42b, and further, the arrangement of the attraction plate 42b ensures the reliability of the operation of the transmission mechanism 40.
In order to adjust the restoring force of the connecting rod 42a during the restoring process, please continue to refer to fig. 4, in the embodiment of the present invention, the connecting rod 42a has a thread and a nut 42c screwed on the thread, and one end of the restoring spring 43 abuts against the fixing base 41 and the other end abuts against the nut 42 c. When the rebound force needs to be increased, the nut 42c is further screwed, at the moment, when the electromagnet is attracted, the deformation degree of the return spring 43 is larger, so that the restoring force is improved, otherwise, the restoring force can be adjusted and reduced; by this arrangement, the wall thickness of the second housing 20 can be adapted to different explosion-proof ratings, and thus can be adapted to a variety of current ratings.
In the embodiment of the present invention, in order to improve the fixing reliability of the electromagnetic mechanism and prevent the change of the suction force of the electromagnetic mechanism caused by shaking, as shown in fig. 5, the electromagnetic mechanism 30 includes a circuit board and a thrust electromagnet fixed on the circuit board, and the shape of the circuit board is configured to be similar to the placement cavity of the fixing base 21. The profiling arrangement refers to that the shape of the circuit board is similar to that of the cavity, such as a rectangle with an inverted right angle shown in the figure, or other shapes, and through the arrangement, the electromagnet can be ensured to apply a magnetic field towards a fixed direction, so that the effective suction force of the electromagnetic mechanism can be still maintained even under severe environments such as explosion or earthquake; it should be noted here that the circuit board in the embodiment of the present invention adopts a thickening arrangement to improve the reliability thereof. The embodiment of the invention also provides an explosion-proof door closer shown in fig. 6, which comprises the door closer chute structure 100, a rocker arm 200 and a hydraulic machine body 300;
the door closer sliding groove structure 100 is fixed on a door frame, the hydraulic machine body 300 is fixed on a door plate, one end of the rocker arm 200 is connected with a rotating shaft of the hydraulic machine body 300, and the other end of the rocker arm is rotatably connected with a sliding block on the door closer sliding groove structure 100.
It should be noted that the door closer adopting the above chute structure of the present invention and the fire door with the door closer are all within the protection scope of the present invention.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A door closer chute structure, comprising:
the first shell is in a strip shape, an opening is formed in one side surface of the first shell along the length direction of the first shell, the width of the opening is smaller than that of the first shell on the side surface, two side walls of the opening form a sliding track of the sliding block, and a locking mechanism for fixing the sliding block is placed in the space inside the first shell;
the second shell is arranged at one end of the first shell and comprises a fixed seat and a cover body, wherein the fixed seat and the cover body are internally provided with a placing cavity, the wall thicknesses of the fixed seat and the cover body and the connection strength of the fixed seat and the cover body meet the explosion-proof requirement, and the explosion-proof requirement is that when the current is less than 250A, the explosion-proof grade is IIBT 6, and when the current is 250A-500A, the explosion-proof grade is IIBT 4;
the transmission mechanism comprises a fixed base, a transmission part and a reset spring, wherein the fixed base is fixed in the first shell, the transmission part is arranged on the fixed base in a relatively sliding manner along the length direction of the first shell, the reset spring is sleeved on the transmission part, one end of the reset spring is connected with the transmission part, and the other end of the reset spring abuts against the fixed base; when the electromagnet mechanism is electrified, the transmission piece moves towards the direction close to the second shell; when the electromagnet mechanism is powered off, the transmission piece moves towards the direction far away from the second shell;
the transmission part comprises a connecting rod and an attraction plate, the connecting rod can be arranged on the fixed base in a relatively sliding mode, the attraction plate is vertically fixed at one end, close to the second shell, of the connecting rod, and the size precision of the attraction plate meets the precision requirement for sliding in the first shell; the connecting rod is provided with a thread and a nut screwed on the thread, and one end of the return spring abuts against the fixed base and the other end abuts against the nut.
2. The sliding groove structure of the door closer according to claim 1, wherein a mounting protrusion is provided on a side wall of the fixing base facing the first casing, a width of the mounting protrusion is slightly smaller than a distance between two inner walls of the first casing in the width direction, a length of the mounting protrusion is smaller than a distance between two opposite inner walls of the first casing in the height direction, a distance between the mounting protrusion and the mounting surface of the first casing is equal to a wall thickness of the first casing, and when the first casing is clamped on the mounting protrusion, the side wall of the first casing and the mounting surface of the fixing base are arranged in a coplanar manner.
3. The sliding groove structure of the door closer according to claim 2, wherein the side wall of the fixing seat facing the first housing has a first protrusion, a second protrusion and a third protrusion, the widths of the first protrusion, the second protrusion and the third protrusion are equal, the distance between the first protrusion and the fixing seat mounting surface is equal to the wall thickness of the first housing, the widths of the first protrusion, the second protrusion and the third protrusion are slightly smaller than the inner wall distance between the two side walls of the first housing in the width direction, the second protrusion is arranged between the first protrusion and the third protrusion at intervals, and the distance between the second protrusion and the first protrusion and the distance between the second protrusion and the third protrusion are slightly larger than the wall thickness of the first housing.
4. The sliding groove structure of the door closer according to claim 1, wherein the electromagnet mechanism comprises a circuit board and a thrust electromagnet fixed on the circuit board, and the shape of the circuit board is arranged in a shape of a placement cavity of the fixing seat.
5. An explosion-proof door closer is characterized by comprising the door closer sliding groove structure, a rocker arm and a hydraulic machine body, wherein the door closer sliding groove structure is as claimed in any one of claims 1 to 4;
the door closer sliding groove structure is fixed on a door frame, the hydraulic machine body is fixed on a door plate, one end of the rocker arm is connected with a rotating shaft of the hydraulic machine body, and the other end of the rocker arm is rotatably connected with a sliding block on the door closer sliding groove structure.
6. A fire door of the normally open type, characterized in that the fire door is mounted with an explosion-proof door closer according to claim 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110033137.7A CN112854951B (en) | 2021-01-11 | 2021-01-11 | Door closer sliding groove structure, explosion-proof door closer and normally-open fireproof door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110033137.7A CN112854951B (en) | 2021-01-11 | 2021-01-11 | Door closer sliding groove structure, explosion-proof door closer and normally-open fireproof door |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112854951A CN112854951A (en) | 2021-05-28 |
| CN112854951B true CN112854951B (en) | 2022-05-17 |
Family
ID=76002563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110033137.7A Active CN112854951B (en) | 2021-01-11 | 2021-01-11 | Door closer sliding groove structure, explosion-proof door closer and normally-open fireproof door |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112854951B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4656690A (en) * | 1984-10-18 | 1987-04-14 | Ryobi Limited | Fireproof door closer and holder having a solenoid and a toggle mechanism |
| CN2357401Y (en) * | 1998-05-07 | 2000-01-05 | 张利 | Rain and explosion prevention electromagnet |
| WO2010052012A1 (en) * | 2008-11-06 | 2010-05-14 | Assa Abloy Sicherheitstechnik Gmbh | Arresting unit for a door closer, door-closing system, use of an arresting unit, and method of arresting a door |
| WO2010062025A1 (en) * | 2008-11-27 | 2010-06-03 | Moon Hong Sik | Separate-type fire door closing apparatus for a door check |
| CN104895440A (en) * | 2014-03-05 | 2015-09-09 | 昆山毅达科技电子有限公司 | Electric control rail type door closer |
| CN205277130U (en) * | 2016-01-18 | 2016-06-01 | 廖运平 | Novel prevent fire door electric door closer |
| CN205297146U (en) * | 2016-01-06 | 2016-06-08 | 成都鑫豪斯电子探测技术有限公司 | Prevent fire door electric door closer |
| CN206220733U (en) * | 2016-11-10 | 2017-06-06 | 广州市禹成消防科技有限公司 | Open the door the automatic door closer for holding |
| CN107524392A (en) * | 2017-09-27 | 2017-12-29 | 昆明晶茂科技有限公司 | A kind of fire resistant doorsets independently perceive triple closing devices |
| CN207017842U (en) * | 2017-05-05 | 2018-02-16 | 深圳市中天明消防科技有限公司 | The electric dual control door closer of temperature |
| CN111206837A (en) * | 2020-03-27 | 2020-05-29 | 王芬芬 | Fireproof door closer |
| CN212176889U (en) * | 2020-04-02 | 2020-12-18 | 武汉凯斯玛特智能控制设备有限公司 | Prevent fire door electric door closer |
-
2021
- 2021-01-11 CN CN202110033137.7A patent/CN112854951B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4656690A (en) * | 1984-10-18 | 1987-04-14 | Ryobi Limited | Fireproof door closer and holder having a solenoid and a toggle mechanism |
| CN2357401Y (en) * | 1998-05-07 | 2000-01-05 | 张利 | Rain and explosion prevention electromagnet |
| WO2010052012A1 (en) * | 2008-11-06 | 2010-05-14 | Assa Abloy Sicherheitstechnik Gmbh | Arresting unit for a door closer, door-closing system, use of an arresting unit, and method of arresting a door |
| WO2010062025A1 (en) * | 2008-11-27 | 2010-06-03 | Moon Hong Sik | Separate-type fire door closing apparatus for a door check |
| CN104895440A (en) * | 2014-03-05 | 2015-09-09 | 昆山毅达科技电子有限公司 | Electric control rail type door closer |
| CN205297146U (en) * | 2016-01-06 | 2016-06-08 | 成都鑫豪斯电子探测技术有限公司 | Prevent fire door electric door closer |
| CN205277130U (en) * | 2016-01-18 | 2016-06-01 | 廖运平 | Novel prevent fire door electric door closer |
| CN206220733U (en) * | 2016-11-10 | 2017-06-06 | 广州市禹成消防科技有限公司 | Open the door the automatic door closer for holding |
| CN207017842U (en) * | 2017-05-05 | 2018-02-16 | 深圳市中天明消防科技有限公司 | The electric dual control door closer of temperature |
| CN107524392A (en) * | 2017-09-27 | 2017-12-29 | 昆明晶茂科技有限公司 | A kind of fire resistant doorsets independently perceive triple closing devices |
| CN111206837A (en) * | 2020-03-27 | 2020-05-29 | 王芬芬 | Fireproof door closer |
| CN212176889U (en) * | 2020-04-02 | 2020-12-18 | 武汉凯斯玛特智能控制设备有限公司 | Prevent fire door electric door closer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112854951A (en) | 2021-05-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3896404A (en) | Magnetic switch hinge | |
| US20060097525A1 (en) | Locking/release device for a pivoting catch for a door opener | |
| CN107327241B (en) | Door closing device | |
| US4696500A (en) | Doorholder assembly for a pocket door | |
| CN112854951B (en) | Door closer sliding groove structure, explosion-proof door closer and normally-open fireproof door | |
| CN101067361B (en) | Panel guide and impact separation system for a sliding door | |
| US3083402A (en) | Swinging door hinge | |
| US2954253A (en) | Magnetic catch | |
| JP3960638B2 (en) | Sliding door with a low friction guide | |
| US20190169903A1 (en) | Counterbalance and method of making the same | |
| WO2001031154A1 (en) | Magnetic lock | |
| TW202024455A (en) | Magnetic lock with elastic pushing member for eliminating residual magnetism by using a pushing end to push a metal attraction member away from the top surface of an electromagnet body | |
| JP6570560B2 (en) | Hinge | |
| EP0049580B1 (en) | Magnetic door catches | |
| JP2005036493A (en) | Brake stopper and brake stopper device for sliding doors | |
| KR200425067Y1 (en) | Anti-noise Mini Relay Structure | |
| KR102648811B1 (en) | Relay assembly | |
| CN211422396U (en) | Intelligent closing fireproof and antitheft door | |
| JP2003278438A (en) | Bracing and fixing structure in hanging-down type sliding door | |
| CN213869389U (en) | Improved electric door closer | |
| JPS6123274Y2 (en) | ||
| CN217735191U (en) | Hinge with elastic hinge | |
| JP5426466B2 (en) | Door to door | |
| US20030057715A1 (en) | Electromagnetic lock | |
| CN215815765U (en) | Electromagnetic release and electrical protection device comprising same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |