CN113107300A - Automatic limiting unit of electric door closer - Google Patents
Automatic limiting unit of electric door closer Download PDFInfo
- Publication number
- CN113107300A CN113107300A CN202110552980.6A CN202110552980A CN113107300A CN 113107300 A CN113107300 A CN 113107300A CN 202110552980 A CN202110552980 A CN 202110552980A CN 113107300 A CN113107300 A CN 113107300A
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- Prior art keywords
- limiting
- electromagnetic
- door
- automatic
- door closer
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- 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.)
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Classifications
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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
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
- E05C17/00—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith
- E05C17/60—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith holding sliding wings open
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
- E05D13/00—Accessories for sliding or lifting wings, e.g. pulleys, safety catches
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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
- E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
- E05F1/08—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings
- E05F1/16—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for sliding wings
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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
- 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
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- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Power-Operated Mechanisms For Wings (AREA)
Abstract
The invention is suitable for the technical field of door closers, and provides an automatic limiting unit of an electric door closer, which comprises a slide rail, wherein a fixed support is fixedly arranged at the upper end of the slide rail, a slide block provided with a limiting block is connected at the lower end of the slide rail in a sliding manner, a lever provided with a limiting roller is hinged on the fixed support, one end of the lever is movably connected with an electromagnetic clamping mechanism, a reset spring is connected between the other end of the lever and the fixed support, and the automatic limiting unit also comprises an electric control unit for controlling the electromagnetic clamping mechanism and a touch switch electrically. When no fire alarm exists, the fireproof door can be kept in a normally open state through the mechanical structure, and the fireproof door can be automatically closed when a fire alarm exists. In addition, can also detect the circuit communication when opening the door, when the circuit communication is normal, prevent that fire door can automatic positioning keeps opening the door the state, when the circuit communication is unusual, prevent that fire door continues to keep closing the state, safe and reliable.
Description
Technical Field
The invention belongs to the technical field of door closers, and particularly relates to an automatic limiting unit of an electric door closer.
Background
The fire door is arranged in a modern building according to the requirement of fire prevention specifications, an electric door closer is usually arranged on the fire door, the fire door is kept in a normally open state through a limiting mechanism in the door closer under the safety condition, and when a fire alarm occurs, a controller is linked with the door closer to relieve the limitation and close the fire door.
Current limit structure mainly has two kinds among the electric door closer, one kind is disc type electro-magnet limit structure, under the safe condition, adsorb the stopper spacing to the slider through lasting circular telegram, realize opening the door automatic positioning, when the fire alarm takes place, break through the circuit and remove spacing to the slider, close and prevent fire door, if unexpected outage when the fire alarm takes place, prevent that fire door also can self-closing, this structure convenient to use, the degree of safety is high, but in use lasts and needs the heavy current to supply power to the electro-magnet, the energy consumption is great.
The other type is a mechanical limiting structure, under the safety condition, the sliding block is kept to be positioned through mechanical limiting, no energy consumption exists, when a fire alarm happens, the energy storage unit arranged on the main control unit is used for electrifying the pull-type electromagnet to remove the limiting of the sliding block, and the fireproof door is closed. The door closer needs to be manually reset on a mechanical limiting structure of the door closer when the door is opened and positioned, is troublesome to operate, has high requirements on workers, and is not favorable for daily use. Also having set up can be to the automatic spacing door closer of slider, can realize automatic positioning behind the fire door opening door, but when the fire alarm took place, prevent that fire door exists the condition of being opened by the people once more after closing, when communication circuit breaks off, the fire door that keeps automatic positioning through mechanical limit structure will be in the open mode, can't go automatic closing again, loses the effect of isolated smog and conflagration, and is very dangerous.
Disclosure of Invention
The invention aims to provide an automatic limiting unit of an electric door closer, which is used for solving the problems that the existing limiting unit of the door closer is inconvenient in door opening and positioning, cannot be closed when power is cut off accidentally and is high in energy consumption.
An automatic limiting unit of an electric door closer is characterized by comprising a sliding rail provided with a sliding groove, a sliding block is slidably mounted at the lower end of the sliding rail, the lower end of the sliding block is rotatably connected with a door closing driving mechanism for driving the sliding block to slide when the door is closed, a fixed support is mounted at the upper end of the sliding rail, a lever with a fulcrum hinged to the fixed support is mounted on the fixed support, a first reset spring is mounted between one end of the lever and the fixed support, and a limiting roller which blocks the sliding block from passing through in the door closing direction is rotatably connected to one side, far away from the first reset spring, of the lever; the upper end of the sliding block is provided with a limiting block which blocks the sliding block from passing through the limiting idler wheel in the door closing direction and jacks up the limiting idler wheel in the door opening direction so as to release the blocking, the other end of the lever is provided with a clamping part which is clamped with an electromagnetic clamping mechanism controlled by an electric control unit, the electromagnetic clamping mechanism comprises a first clamping part and a second clamping part which are matched with the clamping part to limit the limiting idler wheel in the door closing direction to block or not block the height which the limiting block passes through respectively, when the electromagnetic clamping mechanism is not electrified, the clamping part can be kept in clamping connection with the first clamping part in a switchable manner or with the second clamping part in a non-switchable manner, when the electromagnetic clamping mechanism is electrified, under the cooperation of the first return spring, the electromagnetic clamping mechanism is separated from the clamping part and is clamped with the limiting idler wheel again according to the height of the limiting idler wheel; the fixed support is provided with a touch switch which can trigger the circuit detection when the door is opened, and the touch switch is electrically connected with the electromagnetic clamping mechanism.
Further, electromagnetism screens mechanism includes the electromagnetism loose axle, the one end swing joint of electromagnetism loose axle has the screens subassembly, is provided with the electro-magnet around the other end, cup jointed second reset spring on the electromagnetism loose axle, when the electro-magnet circular telegram, the joint portion separation of pull electromagnetism loose axle drive screens subassembly and lever, after the pull, second reset spring drives the electromagnetism loose axle and gets back to the normal position then and drives the screens subassembly and get back to the normal position and the joint portion rejoin of lever.
Furthermore, the screens subassembly is including being provided with first cardboard of first screens portion with second screens portion, the lower extreme of first cardboard articulates on the fixed bolster, the upper end of first cardboard articulates there is the connecting rod, the other end of connecting rod articulates the one end of electromagnetism loose axle, the electromagnetism loose axle of being convenient for drives first cardboard and rotates when the circular telegram.
Furthermore, the screens subassembly is including being provided with first screens portion with the second screens of second screens portion, the lower extreme of second screens rotates to be connected on the fixed bolster, fore-and-aft spout has been seted up to the upper end of second screens, the one end of electro-magnet loose axle is provided with sliding connection and is in the slide bar in the spout, the electromagnetism loose axle of being convenient for drives the second screens and rotates when the circular telegram.
Further, the first clamping portion is a first concave portion, the second clamping portion is a first convex portion, under the cooperation of the first return spring, the first concave portion is convenient for keeping the limiting roller at a height capable of blocking the sliding block from passing through, and the first convex portion is convenient for keeping the limiting roller at a height not blocking the sliding block from passing through.
Further, be equipped with in the joint portion respectively with second concave part and the second concave part of first concave part and first convex part cooperation joint, the gag lever post of being convenient for carries out stable joint with first concave part or first convex part.
Furthermore, the touch switch is a normally open contact switch, so that the detection of the trigger circuit is convenient when the door is opened.
Furthermore, the movable contact of the contact switch is arranged at the lower end of the contact switch and can be abutted and closed with the sliding block, so that the contact switch and the sliding block can be abutted and triggered conveniently.
Further, the stopper is the boss, one side of boss is equipped with and blocks the inclined plane, and the opposite side is equipped with the direction inclined plane, blocks the inclined plane and is used for blockking the stopper through spacing gyro wheel, and the direction inclined plane is used for guiding spacing gyro wheel to rise.
Furthermore, the fixing support is provided with an anti-rotation boss positioned above the second clamping portion, so that rotation of the clamping assembly is limited conveniently, and reliability of the clamping assembly in use is improved.
The invention has the beneficial effects that: the invention has reasonable structural design and convenient installation, when the fireproof door is in a closed state, the door opening through external force can detect whether the control circuit is normal, when the control circuit is normal, the fireproof door is kept in a normally open state through a mechanical structure, the environment is protected, no electricity is consumed, when the control circuit is abnormal, the opening state of the fireproof door cannot be locked, and the fireproof door automatically returns to the closed state.
Drawings
Fig. 1 is an exploded view of a schematic structural diagram of an automatic limiting unit of an electric door closer according to an embodiment of the present invention;
fig. 2 is a front sectional view of a schematic structural diagram of an automatic limiting unit of an electric door closer according to an embodiment of the present invention;
fig. 3 is a front sectional view of a schematic structural diagram of an automatic limiting unit of an electric door closer according to a second embodiment of the present invention.
Wherein, 1, a slide rail; 2. a chute; 3. a slider; 4. a limiting block; 5, a blocking surface; 6. a guide surface; 7. fixing a bracket; 8. a lever; 9. limiting the idler wheel; 10. a first return spring; 11. a touch switch; 12. a first clamping part; 13. a second clamping part; 14. a first clamping plate; 15. a connecting rod; 16. a second return spring; 17. an electromagnetic movable shaft; 18. an anti-rotation boss; 19. an electromagnet; 20. a second projection; 21. a second recessed portion; 22. a second clamping plate; 23. a longitudinal slot; 24. a slide bar.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following detailed description of specific implementations of the present invention is provided in conjunction with specific embodiments:
the first embodiment is as follows:
fig. 1 shows a limiting unit of a power door closer according to a first embodiment of the present invention, and for convenience of description, only the parts related to the first embodiment of the present invention are shown, and the following details are described below:
the invention provides an automatic limiting unit of an electric door closer, which comprises a sliding rail 1 provided with a sliding groove 2, wherein the lower end of the sliding rail 1 is provided with a sliding block 3 in a sliding manner, the lower end of the sliding block 3 is rotatably connected with a door closing driving mechanism for driving the sliding block to slide when a door is closed, the upper end of the sliding rail 1 is provided with a fixed support 7, the fixed support 7 is provided with a lever 8 of which the fulcrum is hinged thereon, a first reset spring 10 is arranged between one end of the lever 8 and the fixed support 7, and one side of the lever 8, which is far away from the first reset spring 10, is rotatably connected with a limiting idler wheel 9; the upper end of the sliding block 3 is provided with a limiting block which blocks the sliding block from passing through the limiting idler wheel 9 in the door closing direction and jacks up the limiting idler wheel 9 in the door opening direction so as to release the blocking, the other end of the lever 8 is provided with a clamping part, the clamping part is clamped with an electromagnetic clamping mechanism controlled by an electric control unit, the electromagnetic clamping mechanism comprises a first clamping part 12 and a second clamping part 13 which are matched with the clamping part to limit the limiting idler wheel 9 in the door closing direction respectively to block or not block the height which the limiting block 4 passes through, when the electromagnetic clamping mechanism is not electrified, the clamping part can be kept clamped with the first clamping part 12 in a switchable manner or with the second clamping part 13 in a non-switchable manner, when the electromagnetic clamping mechanism is electrified, under the cooperation of the first return spring 10, the electromagnetic clamping mechanism is separated from the clamping part and is clamped with the limiting roller 9 again according to the height of the limiting roller; the fixed support is provided with a touch switch 11 which can trigger the circuit detection when the door is opened, and the touch switch 11 is electrically connected with the electromagnetic clamping mechanism.
In this embodiment, further, the electromagnetic locking mechanism further includes an electromagnetic movable shaft 17, one end of the electromagnetic movable shaft 17 is movably connected with the locking component, an electromagnet 19 is disposed around the other end, and a second return spring 16 is sleeved on the electromagnetic movable shaft 17.
Furthermore, the clamping assembly comprises a first clamping plate which is provided with the first clamping portion 12 and the second clamping portion, the lower end of the first clamping plate is hinged to the fixed support, the upper end of the first clamping plate is hinged to a connecting rod, the other end of the connecting rod is hinged to one end of the electromagnetic movable shaft, and the electromagnetic movable shaft can drive the first clamping plate to rotate when being powered on.
In this embodiment, the first positioning portion 12 is a first concave portion, and the second positioning portion is a first convex portion.
In this embodiment, the clamping portion is further provided with a second protrusion 20 and a second recess 21, which are respectively matched and clamped with the first recess and the first protrusion.
In the present embodiment, the touch switch 11 is a normally open contact switch.
In the present embodiment, further, the movable contact of the contact switch 11 is provided at the lower end thereof and can be closed in abutment with the slider 3.
In this embodiment, further, stopper 4 is the boss, and one side of boss is equipped with and blocks the inclined plane, and the opposite side is equipped with the direction inclined plane.
In the present embodiment, it is further characterized in that the fixing bracket 7 is provided with a rotation-preventing boss 18 located above the second detent portion 13.
Example two:
fig. 2 shows a limiting unit of a power door closer according to a second embodiment of the present invention, which only shows the parts related to the second embodiment of the present invention for convenience of description, and the details are as follows:
the invention provides an automatic limiting unit of an electric door closer, which comprises a sliding rail 1 provided with a sliding groove 2, wherein the lower end of the sliding rail 1 is provided with a sliding block 3 in a sliding manner, the lower end of the sliding block 3 is rotatably connected with a door closing driving mechanism for driving the sliding block to slide when a door is closed, the upper end of the sliding rail 1 is provided with a fixed support 7, the fixed support 7 is provided with a lever 8 of which the fulcrum is hinged thereon, a first reset spring 10 is arranged between one end of the lever 8 and the fixed support 7, and one side of the lever 8, which is far away from the first reset spring 10, is rotatably connected with a limiting idler wheel 9; the upper end of the sliding block 3 is provided with a limiting block which blocks the sliding block from passing through the limiting idler wheel 9 in the door closing direction and jacks up the limiting idler wheel 9 in the door opening direction so as to release the blocking, the other end of the lever 8 is provided with a clamping part, the clamping part is clamped with an electromagnetic clamping mechanism controlled by an electric control unit, the electromagnetic clamping mechanism comprises a first clamping part 12 and a second clamping part 13 which are matched with the clamping part to limit the limiting idler wheel 9 in the door closing direction respectively to block or not block the height which the limiting block 4 passes through, when the electromagnetic clamping mechanism is not electrified, the clamping part can be kept clamped with the first clamping part 12 in a switchable manner or with the second clamping part 13 in a non-switchable manner, when the electromagnetic clamping mechanism is electrified, under the cooperation of the first return spring 10, the electromagnetic clamping mechanism is separated from the clamping part and is clamped with the limiting roller 9 again according to the height of the limiting roller; the fixed support is provided with a touch switch 11 which can trigger the circuit detection when the door is opened, and the touch switch 11 is electrically connected with the electromagnetic clamping mechanism.
In this embodiment, further, the electromagnetic locking mechanism further includes an electromagnetic movable shaft 17, one end of the electromagnetic movable shaft 17 is movably connected with the locking component, an electromagnet 19 is disposed around the other end, and a second return spring 16 is sleeved on the electromagnetic movable shaft 17.
In this embodiment, further, the clamping assembly includes a second clamping plate 22 provided with a first clamping portion 12 and a second clamping portion 13, a lower end of the second clamping plate 22 is rotatably connected to the fixed bracket 7, a longitudinal sliding groove 23 is formed in an upper end of the second clamping plate 22, and one end of the electromagnet movable shaft 17 is provided with a sliding rod 24 slidably connected in the sliding groove 23, so that the electromagnet movable shaft 17 drives the second clamping plate 22 to rotate when powered on.
In this embodiment, the first positioning portion 12 is a first concave portion, and the second positioning portion is a first convex portion.
In this embodiment, the clamping portion is further provided with a second protrusion 20 and a second recess 21, which are respectively matched and clamped with the first recess and the first protrusion.
In the present embodiment, the touch switch 11 is a normally open contact switch.
In the present embodiment, further, the movable contact of the contact switch 11 is provided at the lower end thereof and can be closed in abutment with the slider 3.
In this embodiment, further, stopper 4 is the boss, and one side of boss is equipped with and blocks the inclined plane, and the opposite side is equipped with the direction inclined plane.
In the present embodiment, it is further characterized in that the fixing bracket 7 is provided with a rotation-preventing boss 18 located above the second detent portion 13.
The working principle of the invention is as follows:
when the door is opened, the sliding block is driven by external force to move in the door opening direction, the limiting block jacks up the limiting roller through the guide inclined plane, the limiting roller rises to drive the clamping end of the lever to rise to be clamped with the second clamping part, the limiting block continues to move in the door opening direction, the limiting block is separated from the limiting roller and is abutted against the touch switch, the touch switch is closed and triggers the communication detection of a circuit, if the circuit communication is normal, the electric control unit controls the electromagnetic clamping mechanism to be separated from the clamping part of the lever and to be clamped again, the limiting roller descends under the cooperation of the first reset spring, the position of the clamping part of the lever is switched from the second clamping part to the first clamping part, the limiting roller is maintained in the door closing direction to block the limiting block from passing through so as to keep the fireproof door in the open state, if the circuit communication is abnormal, the clamping part of the lever is still clamped at the second clamping part, the limit function on the sliding block is lost, and the fireproof door is closed again under the driving of the door closing driving mechanism; when a door closing signal is received, the electromagnetic clamping mechanism is clamped with the lever in a separating mode, the door closing driving mechanism drives the sliding block to move in the door closing direction, the limiting idler wheel is jacked up and passes through the limiting idler wheel, the limiting idler wheel descends after being separated from the support of the limiting block, under the cooperation of the first reset spring, the clamping portion of the lever is clamped with the first clamping portion again, and the sliding block continues to be closed after the sliding block moves in the door closing direction under the driving of the door closing driving mechanism.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. An automatic limiting unit of an electric door closer is characterized by comprising a sliding rail provided with a sliding groove, a sliding block is slidably mounted at the lower end of the sliding rail, the lower end of the sliding block is rotatably connected with a door closing driving mechanism for driving the sliding block to slide when the door is closed, a fixed support is mounted at the upper end of the sliding rail, a lever with a fulcrum hinged to the fixed support is mounted on the fixed support, a first reset spring is mounted between one end of the lever and the fixed support, and a limiting roller which blocks the sliding block from passing through in the door closing direction is rotatably connected to one side, far away from the first reset spring, of the lever; the upper end of the sliding block is provided with a limiting block which blocks the sliding block from passing through the limiting idler wheel in the door closing direction and jacks up the limiting idler wheel in the door opening direction so as to release the blocking, the other end of the lever is provided with a clamping part which is clamped with an electromagnetic clamping mechanism controlled by an electric control unit, the electromagnetic clamping mechanism comprises a first clamping part and a second clamping part which are matched with the clamping part to limit the limiting idler wheel in the door closing direction to block or not block the height which the limiting block passes through respectively, when the electromagnetic clamping mechanism is not electrified, the clamping part can be kept in clamping connection with the first clamping part in a switchable manner or with the second clamping part in a non-switchable manner, when the electromagnetic clamping mechanism is electrified, under the cooperation of the first return spring, the electromagnetic clamping mechanism is separated from the clamping part and is clamped with the limiting idler wheel again according to the height of the limiting idler wheel; the fixed support is provided with a touch switch which can trigger the circuit detection when the door is opened, and the touch switch is electrically connected with the electromagnetic clamping mechanism.
2. The automatic limiting unit of the electric door closer according to claim 1, wherein the electromagnetic locking mechanism comprises an electromagnetic movable shaft, one end of the electromagnetic movable shaft is movably connected with a locking component, an electromagnet is arranged around the other end of the electromagnetic movable shaft, and a second return spring is sleeved on the electromagnetic movable shaft.
3. The automatic limiting unit of an electric door closer according to claim 2, wherein the blocking component comprises a first blocking plate provided with the first blocking portion and the second blocking portion, the lower end of the first blocking plate is hinged to the fixed bracket, the upper end of the first blocking plate is hinged to a connecting rod, and the other end of the connecting rod is hinged to one end of the electromagnetic movable shaft.
4. The automatic limiting unit of an electric door closer according to claim 2, wherein the blocking component comprises a second blocking plate provided with the first blocking portion and the second blocking portion, the lower end of the second blocking plate is rotatably connected to the fixed bracket, the upper end of the second blocking plate is provided with a longitudinal sliding groove, and one end of the electromagnet movable shaft is provided with a sliding rod slidably connected in the sliding groove.
5. The automatic spacing unit of electric door closer according to any of claims 1-4, wherein the first detent is a first concave portion and the second detent is a first convex portion.
6. The automatic limiting unit of the electric door closer according to claim 5, wherein the clamping portion is provided with a second convex portion and a second concave portion which are respectively matched and clamped with the first concave portion and the first convex portion.
7. The automatic limit unit of electric door closer according to claim 1, wherein the touch switch is a normally open contact switch.
8. The automatic spacing unit of electric door closer according to claim 7, wherein the movable contact of the contact switch is disposed at a lower end thereof and can be closed in abutment with the slider.
9. The automatic limiting unit of an electric door closer according to claim 7, wherein the limiting block is a boss, one side of the boss is provided with a blocking inclined surface, and the other side of the boss is provided with a guiding inclined surface.
10. The automatic limiting unit of an electric door closer according to claim 1, wherein the fixing bracket is provided with an anti-rotation boss located above the second blocking portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110552980.6A CN113107300A (en) | 2021-05-20 | 2021-05-20 | Automatic limiting unit of electric door closer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110552980.6A CN113107300A (en) | 2021-05-20 | 2021-05-20 | Automatic limiting unit of electric door closer |
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| Publication Number | Publication Date |
|---|---|
| CN113107300A true CN113107300A (en) | 2021-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110552980.6A Pending CN113107300A (en) | 2021-05-20 | 2021-05-20 | Automatic limiting unit of electric door closer |
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| CN (1) | CN113107300A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4325015A1 (en) * | 2022-08-17 | 2024-02-21 | GEZE GmbH | Fixing device and door drive |
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| CN207110780U (en) * | 2017-07-19 | 2018-03-16 | 上海冉能自动化科技有限公司 | Door closer Automatic-reset buckle structure |
| CN108547529A (en) * | 2018-04-19 | 2018-09-18 | 上海冉能自动化科技有限公司 | Door closer-holder |
| CN209444023U (en) * | 2018-11-06 | 2019-09-27 | 秦皇岛尼特智能科技有限公司 | A kind of positioning release system |
| 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 |
| CN215108265U (en) * | 2021-05-20 | 2021-12-10 | 深圳市泛海三江电子股份有限公司 | Automatic limiting unit of electric door closer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4325015A1 (en) * | 2022-08-17 | 2024-02-21 | GEZE GmbH | Fixing device and door drive |
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Address after: 518000 the three floor of the new world apartment, Nanshan Avenue, Nanshan District, Shenzhen, Guangdong (for office only). Applicant after: Shenzhen hi tech investment Sanjiang Electronics Co.,Ltd. Address before: 518000 the three floor of the new world apartment, Nanshan Avenue, Nanshan District, Shenzhen, Guangdong (for office only). Applicant before: SHENZHEN FANHAI SANJIANG ELECTRONICS Co.,Ltd. |