CN215108265U - Automatic limiting unit of electric door closer - Google Patents
Automatic limiting unit of electric door closer Download PDFInfo
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- CN215108265U CN215108265U CN202121097399.1U CN202121097399U CN215108265U CN 215108265 U CN215108265 U CN 215108265U CN 202121097399 U CN202121097399 U CN 202121097399U CN 215108265 U CN215108265 U CN 215108265U
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- door closer
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Abstract
The utility model discloses be suitable for door closer technical field, provide an automatic spacing unit of electric door closer, including the slide rail, slide rail upper end fixed mounting has the fixed bolster, and slide rail lower extreme sliding connection has the slider that is equipped with the stopper, and articulated on the fixed bolster have the lever that is equipped with spacing gyro wheel, and the one end swing joint of lever has electromagnetism screens mechanism, is connected with reset spring between the other end and the fixed bolster, still including the automatically controlled unit of control electromagnetism clamping mechanism and the touch switch of being connected with automatically controlled unit electricity. 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 utility model belongs to the technical field of the door closer, especially, relate to an automatic spacing unit of 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.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an automatic spacing unit of electric door closer for solve current door closer spacing unit open the door the location inconvenient, unexpected outage can't close the door and the big problem of 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 utility model has the advantages that: the utility model has the advantages of reasonable design, simple to operate prevents that fire door is in when the closed condition, opens the door through external force and can detect whether control circuit is normal, and control circuit will prevent that fire door keeps normally opening the state through mechanical structure when normal, and the environmental protection is not taken charge of electricity, and control circuit appears unable locking the open mode of preventing fire door when unusual, prevents that fire door is automatic to return closed condition.
Drawings
Fig. 1 is an exploded view of a schematic structural diagram of an automatic limiting unit of an electric door closer according to a first embodiment of the present invention;
fig. 2 is a front cross-sectional view of a schematic structural diagram of an automatic limiting unit of an electric door closer according to a first 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 an 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 clearly understood, the present invention is further described in 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 is given to specific implementations of the present invention with reference to specific embodiments:
the first embodiment is as follows:
fig. 1 shows a limiting unit of an electric door closer according to a first embodiment of the present invention, which only shows the parts related to the embodiment of the present invention for convenience of description, and the detailed description is as follows:
the utility model provides an automatic spacing unit of electric door closer, including the slide rail 1 of seting up spout 2, the lower extreme slidable mounting of slide rail 1 has slider 3, the lower extreme of slider 3 rotates and is connected with the gliding door closing actuating mechanism of drive when closing the door, the upper end of slide rail 1 is installed fixed bolster 7, fixed bolster 7 is last to install the lever 8 that the fulcrum articulates on it, install first reset spring 10 between one end of lever 8 and fixed bolster 7, one side of keeping away from first reset spring 10 on lever 8 rotates and is connected with the spacing gyro wheel 9 that blocks slider 3 and pass through in the direction of closing the door; 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 in the door closing direction respectively to block or not block the height which the limiting block 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 idler wheel again according to the height of the limiting idler wheel; 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 an electric 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 detailed description is as follows:
the utility model provides an automatic spacing unit of electric door closer, including the slide rail 1 of seting up spout 2, the lower extreme slidable mounting of slide rail 1 has slider 3, the lower extreme of slider 3 rotates and is connected with the gliding door closing actuating mechanism of drive when closing the door, the upper end of slide rail 1 is installed fixed bolster 7, fixed bolster 7 is last to install the lever 8 that the fulcrum articulates on it, install first reset spring 10 between one end of lever 8 and fixed bolster 7, one side of keeping away from first reset spring 10 on lever 8 rotates and is connected with the spacing gyro wheel 9 that blocks slider 3 and pass through in the direction of closing the door; 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 in the door closing direction respectively to block or not block the height which the limiting block 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 idler wheel again according to the height of the limiting idler wheel; 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 utility model discloses a theory of operation:
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, and the limiting roller is in the high position, 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 exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles 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 |
|---|---|---|---|
| CN202121097399.1U CN215108265U (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 |
|---|---|---|---|
| CN202121097399.1U CN215108265U (en) | 2021-05-20 | 2021-05-20 | Automatic limiting unit of electric door closer |
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| Publication Number | Publication Date |
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| CN215108265U true CN215108265U (en) | 2021-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121097399.1U Active CN215108265U (en) | 2021-05-20 | 2021-05-20 | Automatic limiting unit of electric door closer |
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| CN (1) | CN215108265U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113107300A (en) * | 2021-05-20 | 2021-07-13 | 深圳市泛海三江电子股份有限公司 | Automatic limiting unit of electric door closer |
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2021
- 2021-05-20 CN CN202121097399.1U patent/CN215108265U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113107300A (en) * | 2021-05-20 | 2021-07-13 | 深圳市泛海三江电子股份有限公司 | Automatic limiting unit of electric door closer |
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Address after: 518000 the three floor of the new world apartment, Nanshan Avenue, Nanshan District, Shenzhen, Guangdong (for office only). Patentee 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). Patentee before: SHENZHEN FANHAI SANJIANG ELECTRONICS Co.,Ltd. |