CN216767052U - Formula of unloading permanent magnetism releaser is pressed to prevent fire door - Google Patents
Formula of unloading permanent magnetism releaser is pressed to prevent fire door Download PDFInfo
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- CN216767052U CN216767052U CN202123104999.9U CN202123104999U CN216767052U CN 216767052 U CN216767052 U CN 216767052U CN 202123104999 U CN202123104999 U CN 202123104999U CN 216767052 U CN216767052 U CN 216767052U
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- permanent magnet
- fixing seat
- releaser
- fire door
- seat body
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Abstract
The utility model discloses a pressing force-unloading type permanent magnet releaser of a fireproof door, which comprises a permanent magnet fixing seat and a positioning lock rod, wherein the permanent magnet fixing seat comprises a front end plate, a fixing seat body and a rear end plate, the middle part of the front end plate is provided with a through hole, the part of the fixing seat body corresponding to the through hole is provided with a pressing cavity, permanent magnets are symmetrically arranged above and below the pressing cavity, an upper permanent magnet and a lower permanent magnet are movably connected with the fixing seat body through a rotary damper, the polarities of the upper permanent magnet and the lower permanent magnet are opposite, and the initial positions determined by the rotary damper are mutually attached, the positioning lock rod comprises an adsorption plate, a positioning rod and a base, the permanent magnet releaser adsorbs the positioning lock rod by utilizing the adsorption effect between the permanent magnets and a magnetic conductive material, the contact surface area between the permanent magnets and the magnetic conductive material is changed by pressing the permanent magnets, the magnetic attraction force can be effectively changed, and the reliability of the permanent magnet releaser is improved from a mechanical transmission structure, the rotary damper is adopted to delay the reset speed of the permanent magnet, so that the manufacturing cost is low and the failure rate is low.
Description
Technical Field
The utility model relates to the technical field of fire safety equipment, in particular to a pressing force-unloading type permanent magnet releaser for a fireproof door.
Background
In urban building construction engineering, a fireproof door is common fire-fighting equipment on a public place safety passage, and in order to improve fire safety, the building is generally provided with a fire-fighting passage to be used as a passage for implementing rescue and evacuation of trapped people when fire occurs. The fire-fighting access all can be provided with prevents fire door structure, prevents that fire door main function lies in the conflagration after taking place, through closing prevent fire door, can prevent dense cigarette entering fire-fighting access. Usually when dense smoke enters into the fire passage, the fire door can self-closing, and the self-closing of fire door mainly utilizes the door closer to realize, and because the self-closing function of door closer, need keep fire door open when normally open extremely inconvenient under the emergency of personnel evacuation, perhaps need often open the door the place and need fix the door location fixed, also need convenient release door simultaneously, so prevent that the fire door releaser just obtains market's general acceptance.
And traditional fire door releaser's structure is too complicated, and the accessory is various, and the processing cost is high, and the fault rate is great to still design electromagnetic drive's releaser, its reliability is poor.
Disclosure of Invention
The utility model aims at: to present prevent fire door releaser structure too complicated, the accessory is various, the processing cost is high, the fault rate is great, and the technical problem that the electromagnetic drive's that still designs releaser reliability is poor, we design one kind and prevent fire door and press down the power of unloading formula permanent magnet releaser, utilize the adsorption between permanent magnet and the magnetic conductive material, adsorb the positioning lock pole, and change the contact surface area between permanent magnet and the magnetic conductive material through pressing down the permanent magnet, can effectively change magnetic attraction, promote the reliability of permanent magnet releaser from mechanical transmission structure, adopt the speed of resetting of rotatory attenuator delay permanent magnet, low in manufacturing cost, the fault rate is low, and is simple and practical.
The technical scheme adopted for solving the problems is as follows:
a force-releasing type permanent magnet releaser for pressing a fire door, which comprises a permanent magnet fixing seat and a positioning lock rod,
the permanent magnet fixing seat comprises a front end plate, a fixing seat body and a rear end plate, wherein a through hole is formed in the middle of the front end plate, a pressing cavity is formed in the fixing seat body corresponding to the through hole, permanent magnets are symmetrically arranged above and below the pressing cavity and comprise an upper permanent magnet and a lower permanent magnet, the upper permanent magnet and the lower permanent magnet are movably connected with the fixing seat body through a rotary damper, so that the permanent magnets are slowly rotated and reset after being pressed inwards by a positioning locking rod for a certain angle,
the polarity of the upper permanent magnet is opposite to that of the lower permanent magnet, the upper permanent magnet and the lower permanent magnet are mutually attached at the initial positions determined by the rotary damper, the outer end surfaces of the upper permanent magnet and the lower permanent magnet are conical surfaces and are closely attached to the adsorption surface of the adsorption rod arranged on the positioning lock rod,
the utility model discloses a fire door, including the fixed position locking lever, the fixed position locking lever includes adsorption plate, locating lever and base, the base is fixed on preventing fire door, adsorption plate and base are connected to the locating lever, the adsorption plate is made for magnetic material, pastes the cooperation with the outer terminal surface of last permanent magnet and lower permanent magnet mutually, and the circular conical surface periphery is provided with the fillet curved surface, when the fixed position locking lever is pressed to the permanent magnet fixing base by the application of force, the adsorption plate promotes permanent magnet and lower permanent magnet to pressing down the intracavity rotation, and the three binding face converts the fillet curved surface into by the circular conical surface and permanent magnet and lower permanent magnet tangent cooperation, only remains circular line contact, and then changes the line contact into by the face contact, and the adsorption contact area that has significantly reduced, and the dynamics of magnetism is reduced greatly, and manual separation location locking lever is very convenient, treats the permanent magnet and the permanent magnet is all reset back down, can pass through magnetic force once more and adsorb.
Furthermore, the lower end of the permanent magnet fixing seat is fixedly connected with a base, and the base is fixed on a wall or the ground.
Furthermore, the front end plate and the fixing seat body are fixedly connected through screw threads, and the fixing seat body and the rear end plate are fixedly connected through screw threads.
Furthermore, the binding surfaces of the upper permanent magnet and the lower permanent magnet are both provided with non-magnetic-conductive materials, so that the magnetic induction lines are conducted towards the outer winding path to two poles, and the magnetic attraction force between the adsorption plate and the upper permanent magnet and the magnetic attraction force between the adsorption plate and the lower permanent magnet are increased.
The utility model has the beneficial effects that:
this prevent fire door and press down power formula permanent magnet releaser and utilize the adsorption between permanent magnet and the magnetic materials, adsorb the locking lever, and change the contact surface area between permanent magnet and the magnetic materials through pressing down the permanent magnet, can effectively change magnetic attraction, promote the reliability of permanent magnet releaser from mechanical transmission structure, adopt the speed of resetting that the permanent magnet was postponed to the rotary damper, low in manufacturing cost, the fault rate is low, simple and practical.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below.
Fig. 1 is a schematic structural view of a force-releasing permanent magnet releaser for pressing a fire door according to the present embodiment;
FIG. 2 is a sectional view of the permanent magnet releaser with force-releasing function for the fire door of this embodiment;
fig. 3 is a state diagram of the upper permanent magnet and the lower permanent magnet of the present embodiment after being pressed;
FIG. 4 is a front view of the permanent magnet holder of the present embodiment;
the magnetic damping device comprises a base 1, a positioning rod 2, an adsorption plate 3, a front end plate 4, a fixing seat body 5, a rear end plate 6, a base 7, an upper permanent magnet 8, an upper rotating damper 9, a conical surface 10, a lower permanent magnet 11, a lower rotating damper 12, a pressing cavity 13, a through groove 14, a round-corner curved surface 15, a through hole 16, a threaded hole 17 and a non-magnetic conducting material 18.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Referring to fig. 1-4, the present embodiment provides a fire door pressing force-releasing type permanent magnet releaser, which includes a permanent magnet holder and a positioning lock bar.
Specifically, referring to fig. 2 and 3, the permanent magnet fixing seat includes a front end plate 4, a fixing seat body 5 and a rear end plate 6, a through hole 16 is formed in the middle of the front end plate 4, a pressing cavity 13 is formed in a position, corresponding to the through hole 16, of the fixing seat body 5, permanent magnets are symmetrically arranged above and below the pressing cavity 13, the pressing cavity includes an upper permanent magnet 8 and a lower permanent magnet 11, the upper permanent magnet 8 and the lower permanent magnet 11 are movably connected with the fixing seat body 5 through a rotary damper, and the upper rotary damper 9 and the lower rotary damper 12 are included, so that the permanent magnets are slowly rotated and reset after being pressed inward by a certain angle by a positioning locking rod.
Referring to fig. 3, the upper permanent magnet 8 and the lower permanent magnet 11 have opposite polarities, and are attached to each other at initial positions determined by the rotary damper, and the outer end surfaces of the upper permanent magnet 8 and the lower permanent magnet 11 are conical surfaces 10 and are closely attached to an adsorption surface of an adsorption rod provided on the positioning lock rod.
Refer to fig. 2, the positioning and locking lever includes adsorption plate 3, locating lever 2 and base 1, base 1 is fixed on preventing fire door, adsorption plate 3 and base 1 are connected to locating lever 2, adsorption plate 3 makes for magnetic material, and the outer terminal surface with last permanent magnet 8 and lower permanent magnet 11 pastes the cooperation has conical surface 10, and conical surface 10 periphery is provided with fillet curved surface 15, when the positioning and locking lever was pressed to the permanent magnet fixing base by the application of force, adsorption plate 3 promoted and goes up permanent magnet 8 and lower permanent magnet 11 to pressing chamber 13 internal rotation, and the three binding face is converted into fillet curved surface 15 and permanent magnet and the tangent cooperation of lower permanent magnet 11 by conical surface 10, only remains circular line contact, and then changes the line contact into by the face contact, the adsorption contact area that has significantly reduced, and the magnetic attraction dynamics reduces greatly.
In a further embodiment, the lower end of the permanent magnet fixing seat is fixedly connected with a base 7, and the base 7 is fixed on a wall or a ground.
The further embodiment is that the front end plate 4 and the fixed seat body 5 are fixedly connected by screw threads, and the fixed seat body 5 and the rear end plate 6 are fixedly connected by screw threads.
In a further embodiment, the binding surfaces of the upper permanent magnet 8 and the lower permanent magnet 11 are both provided with non-magnetic-conductive materials 18, so that the magnetic induction lines are conducted towards the outer winding path by two poles, and the magnetic attraction between the adsorption plate 3 and the upper permanent magnet 8 and the lower permanent magnet 11 is increased.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes, modifications, substitutions and alterations can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art, the scope of the present invention being defined by the appended claims and their equivalents.
Claims (4)
1. The utility model provides a prevent that fire door presses down and unload formula permanent magnetism releaser, includes permanent magnetism fixing base and locking lever, its characterized in that:
the permanent magnet fixing seat comprises a front end plate, a fixing seat body and a rear end plate, wherein a through hole is formed in the middle of the front end plate, a pressing cavity is formed in the fixing seat body corresponding to the through hole, permanent magnets are symmetrically arranged above and below the pressing cavity and comprise an upper permanent magnet and a lower permanent magnet, the upper permanent magnet and the lower permanent magnet are movably connected with the fixing seat body through a rotary damper, so that the permanent magnets are slowly rotated and reset after being pressed inwards by a positioning locking rod for a certain angle,
the polarity of the upper permanent magnet is opposite to that of the lower permanent magnet, the upper permanent magnet and the lower permanent magnet are mutually attached at the initial positions determined by the rotary damper, the outer end surfaces of the upper permanent magnet and the lower permanent magnet are conical surfaces and are closely attached to the adsorption surface of the adsorption rod arranged on the positioning lock rod,
the utility model discloses a fire door, including the fixed locking lever, the fixed locking lever includes adsorption plate, locating lever and base, the base is fixed on preventing fire door, adsorption plate and base are connected to the locating lever, the adsorption plate is made for magnetic material, pastes the cooperation with the outer terminal surface of last permanent magnet and lower permanent magnet mutually and has the conical surface, and the conical surface periphery is provided with the fillet curved surface, when the fixed locking lever was pressed to the permanent magnetism fixing base by the application of force, the adsorption plate promoted to go up the permanent magnet and rotate to pressing down the intracavity with lower permanent magnet, and the three binding face converts the fillet curved surface into by the conical surface and cooperates with permanent magnet and lower permanent magnet are tangent, only remain circular line contact, and then change into line contact by the face contact.
2. The fire door push-down force-unloading type permanent magnet releaser of claim 1, characterized in that: the lower end of the permanent magnet fixing seat is fixedly connected with a base which is fixed on a wall or the ground.
3. The fire door push-down force-unloading type permanent magnet releaser of claim 1, characterized in that: the front end plate and the fixing seat body are fixedly connected through screw threads, and the fixing seat body and the rear end plate are fixedly connected through screw threads.
4. The fire door push-down force-unloading type permanent magnet releaser of claim 1, characterized in that: and the binding surfaces of the upper permanent magnet and the lower permanent magnet are both provided with non-magnetic-conductive materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123104999.9U CN216767052U (en) | 2021-12-12 | 2021-12-12 | Formula of unloading permanent magnetism releaser is pressed to prevent fire door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123104999.9U CN216767052U (en) | 2021-12-12 | 2021-12-12 | Formula of unloading permanent magnetism releaser is pressed to prevent fire door |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216767052U true CN216767052U (en) | 2022-06-17 |
Family
ID=81966791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123104999.9U Active CN216767052U (en) | 2021-12-12 | 2021-12-12 | Formula of unloading permanent magnetism releaser is pressed to prevent fire door |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216767052U (en) |
-
2021
- 2021-12-12 CN CN202123104999.9U patent/CN216767052U/en active Active
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