CN113066250B - Manual fire alarm with prevent mistake and touch - Google Patents
Manual fire alarm with prevent mistake and touch Download PDFInfo
- Publication number
- CN113066250B CN113066250B CN202110380960.5A CN202110380960A CN113066250B CN 113066250 B CN113066250 B CN 113066250B CN 202110380960 A CN202110380960 A CN 202110380960A CN 113066250 B CN113066250 B CN 113066250B
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- cavity
- magnet
- reset
- rotating shaft
- pressing plate
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/02—Mechanical actuation of the alarm, e.g. by the breaking of a wire
Abstract
The embodiment of the invention relates to the technical field related to fire protection and discloses a manual fire alarm with false touch prevention, which comprises an alarm box, a pressing plate and a rotating shaft, wherein the pressing plate is positioned in the alarm box; a working cavity is arranged in the alarm box, and a slidable automatic reset rod is arranged in the alarm box; the pressing plate is positioned in the working cavity, positioned at the lower side of the rotating shaft and fixed on the rotating shaft, and a rotatable abutting rod is arranged in the pressing plate; the rotating shaft magnet is fixedly arranged in the rotating shaft, and the invention judges whether the pressing plate is touched by mistake in different modes, when the pressing plate is touched by mistake normally or touched by mistake continuously, the touching magnetic block can not touch the alarm triggering block all the time to alarm, meanwhile, the pressing plate is reset through the automatic reset rod after a certain time, when the pressing plate is pressed all the time, the normal alarm is realized, and a firefighter is required to reset on site at the moment, so that the increase of the working intensity of the firefighter caused by the mistaken touch is avoided, and the alarm loss of firefighting is reduced.
Description
Technical Field
The embodiment of the invention relates to the technical field related to fire protection, in particular to a manual fire alarm with false touch prevention.
Background
The manual fire alarm is low in general installation position for facilitating resident use, but is easily pressed by passers-by or children by mistake, and most of fire fighters need to go to the scene to reset the alarm after being pressed by mistake nowadays, so that the working strength of the fire fighters can be increased, meanwhile, unnecessary loss during alarm can be caused, and on the other hand, the normal use of the alarm can be influenced.
Disclosure of Invention
Therefore, the embodiment of the invention provides the manual fire alarm with the anti-false touch function, which solves the problem that the manual fire alarm is easy to be touched by false to cause the workload of firefighters to be increased.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
a manual fire alarm with false touch prevention function comprises an alarm box, a pressing plate and a rotating shaft, wherein the pressing plate is positioned in the alarm box;
a working cavity is arranged in the alarm box, and a slidable automatic reset rod is arranged in the alarm box;
the pressing plate is positioned in the working cavity, is positioned at the lower side of the rotating shaft and is fixed on the rotating shaft, and a rotatable abutting rod is arranged in the pressing plate;
the rotating shaft magnet is fixedly arranged in the rotating shaft.
On the basis of the technical scheme, the front side of the working cavity is communicated with a communicating cavity with a forward opening, the front side of the working cavity is communicated with an automatic reset rod cavity positioned at the lower side of the communicating cavity, the lower side of the working cavity is provided with a manual reset shaft cavity with a forward opening, a manual reset shaft is connected with the rear end wall of the manual reset shaft cavity in a rotating fit manner, a limiting cavity with a forward opening is arranged in the manual reset shaft, the automatic reset rod is in sliding fit with the automatic reset rod cavity and positioned at the lower side of the pressing plate, a reset rod spring is fixedly connected between the upper end surface of the automatic reset rod and the upper end wall of the automatic reset rod cavity, a reset pull rope is fixedly connected between the automatic reset rod and the manual reset shaft, and two indicating lamps which are symmetrically arranged are fixedly connected with the upper end wall of the working cavity.
On the basis of the technical scheme, the right side of the working cavity is provided with the rotating shaft cavity, the left side of the working cavity is provided with the transmission cavity, the left side of the transmission cavity is provided with the wire wheel cavity, the inner rotating fit connection of the left end wall of the transmission cavity is provided with a wire wheel shaft which extends leftwards to the wire wheel cavity and rightwards to the transmission cavity, the tail end of the left side of the wire wheel shaft is fixedly connected with the wire wheel, the tail end of the right side of the wire wheel shaft is fixedly connected with the wire wheel gear, the rotating shaft is in rotating fit with the rotating shaft cavity and leftwards to the transmission cavity, the right end face of the rotating shaft is fixedly connected with the rotating shaft gear meshed with the wire wheel gear, the upper side of the rotating shaft cavity is communicated with the driving magnetic block cavity, and the inner sliding connection of the driving magnetic block cavity is provided with the driving magnetic block.
On the basis of the technical scheme, the rear side of the working cavity is provided with the reset magnet cavity, the rear side of the reset magnet cavity is communicated with the main magnet cavity, the upper side of the reset magnet cavity is communicated with the magnetic blocking plate cavity, the upper side of the magnetic blocking plate cavity is communicated with the contact magnetic block cavity at the upper side of the main magnet cavity, the upper side of the contact magnetic block cavity is communicated with the friction block cavity, the friction block cavity is slidably connected with the friction block, the upper end surface of the friction block is fixed with the upper end wall of the friction block cavity through a friction block spring, a friction block pull rope is fixedly connected between the friction block and the manual reset shaft, the contact magnetic block cavity can be slidably connected with the contact magnetic block which is in butt joint with the friction block, the rear end surface of the contact magnetic block is fixed with the rear end wall of the contact magnetic block cavity through a contact magnetic spring, the contact magnetic block is fixedly connected with the active magnetic block, and the front end wall of the contact magnetic block cavity is fixedly connected with an alarm block which can be contacted with the contact magnetic block.
On the basis of the technical scheme, the repelling magnet is arranged in the sliding connection in the magnetic blocking plate cavity, the upper end face of the repelling magnet is fixed with the upper end wall of the magnetic blocking plate cavity through the repelling magnet spring, the lower end face of the repelling magnet is fixedly connected with the magnetic blocking plate, the automatic resetting magnet is arranged in the sliding connection in the resetting magnet cavity, the lower end wall of the resetting magnet cavity is fixedly connected with a friction strip which is in butt joint with the automatic resetting magnet, the automatic resetting magnet is fixedly connected with an automatic resetting pull rope between the automatic resetting rod, the main magnet is arranged in the sliding connection in the main magnet cavity, the lower end face of the main magnet is fixed with the lower end wall of the main magnet cavity through the main magnet spring, and the main magnet is fixedly connected with the main magnet pull rope between the wire wheels.
On the basis of the technical scheme, the pressing plate is internally provided with the supporting rod cavity with a forward opening, the supporting rod can be positioned in the supporting rod cavity, the rear end wall of the supporting rod cavity is fixedly connected with the supporting rod spring, the left end wall and the right end wall of the supporting rod cavity are rotatably connected with the supporting rod shaft, the supporting rod is fixed with the supporting rod shaft, and the supporting rod spring can be in supporting connection with the supporting rod.
On the basis of the technical scheme, the elasticity of the abutting rod spring is smaller than that of the torsion spring, so that the abutting rod spring can be in a compressed state.
On the basis of the technical scheme, the friction force of the forward movement of the contact magnetic block is larger than the friction force of the backward movement of the contact magnetic block, the friction force of the backward movement of the automatic reset magnet is larger than the friction force of the forward movement of the automatic reset magnet, the friction force between the contact magnetic block and the friction block is smaller than the friction force between the automatic reset magnet and the friction strip, and the moving speed of the contact magnetic block is larger than the moving speed of the automatic reset magnet.
On the basis of the technical scheme, the supporting rod can just support the pressing plate to be unable to reset after being abutted against the front end wall of the working cavity.
Embodiments of the present invention have the following advantages: according to the invention, whether the pressing plate is touched by mistake is judged by judging different modes of pressing the pressing plate, when the pressing plate is touched by mistake normally or touched by mistake continuously, the touching magnetic block can not touch the alarm triggering block all the time to alarm, meanwhile, the pressing plate is reset through the automatic reset rod after a certain time, and when the pressing plate is pressed all the time, the alarm is normally alarmed, and a firefighter is required to go to the scene to reset at the moment, so that the increase of the working intensity of the firefighter caused by the mistaken touch is avoided, and the alarm loss of firefighting is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the invention or of the prior art, the drawings used in the description of the embodiments or of the prior art will be briefly described below. It will be apparent to those of ordinary skill in the art that the drawings in the following description are exemplary only and that other implementations can be obtained from the extensions of the drawings provided without inventive effort.
The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the invention, which is defined by the claims, so that any structural modifications, changes in proportions, or adjustments of sizes, which do not affect the efficacy or the objects of the invention, are deemed to fall within the ambit of the technical disclosure.
Fig. 1 is a schematic diagram of the overall structure of a manual fire alarm with false touch prevention in an embodiment of the invention.
FIG. 2 is a schematic view of the cross-sectional structure of FIG. 1 taken along the direction A-A.
FIG. 3 is a schematic view of the sectional structure in the direction B-B in FIG. 1.
FIG. 4 is a schematic view of the cross-sectional structure in the direction C-C in FIG. 1.
Fig. 5 is an enlarged schematic view of the structure at D in fig. 2.
Fig. 6 is an enlarged schematic view of the structure at E in fig. 4.
Fig. 7 is a schematic diagram showing the position of the spindle magnet 32 (top view) when the pressing plate 20 is pressed (right view).
Detailed Description
Other advantages and advantages of the present invention will become apparent to those skilled in the art from the following description, which is to be read in connection with the accompanying drawings, wherein like reference numerals indicate like elements throughout the several views. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 7, the present invention provides a manual fire alarm with erroneous touch prevention, comprising an alarm box 10, a pressing plate 20 positioned in the alarm box 10, and a rotating shaft 30;
a working cavity 11 is arranged in the alarm box 10, and a slidable automatic reset rod 19 is arranged in the alarm box 10;
the pressing plate 20 is located in the working cavity 11, the pressing plate 20 is located at the lower side of the rotating shaft 30 and fixed on the rotating shaft 30, and a rotatable abutting rod 22 is arranged in the pressing plate 20;
the spindle 30 is fixedly provided with a spindle magnet 32.
The front side of the working cavity 11 is communicated with a communication cavity 12 with a forward opening, the front side of the working cavity 11 is communicated with an automatic reset rod cavity 18 positioned at the lower side of the communication cavity 12, the lower side of the working cavity 11 is provided with a manual reset shaft cavity 14 with a forward opening, the rear end wall of the manual reset shaft cavity 14 is connected with a manual reset shaft 16 in a rotating fit manner, a limiting cavity 15 with a forward opening is arranged in the manual reset shaft 16, the automatic reset rod 19 and the automatic reset rod cavity 18 are in sliding fit and are located on the lower side of the pressing plate 20, a reset rod spring 17 is fixedly connected between the upper end face of the automatic reset rod 19 and the upper end wall of the automatic reset rod cavity 18, a reset pull rope 35 is fixedly connected between the automatic reset rod 19 and the manual reset shaft 16, and two indicating lamps 13 which are symmetrically arranged are fixedly connected with the upper end wall of the working cavity 11.
The right side of the working chamber 11 is provided with a rotating shaft chamber 31, the left side of the working chamber 11 is provided with a transmission chamber 41, the left side of the transmission chamber 41 is provided with a wire wheel chamber 40, a wire wheel shaft 38 which extends leftwards into the wire wheel chamber 40 and rightwards into the transmission chamber 41 is connected in a rotating fit manner in the left end wall of the transmission chamber 41, the left end of the wire wheel shaft 38 is fixedly connected with a wire wheel 39, the right end of the wire wheel shaft 38 is fixedly connected with a wire wheel gear 37, the rotating shaft 30 is in rotating fit with the rotating shaft chamber 31 and extends leftwards into the transmission chamber 41, a torsion spring 42 is fixedly connected between the right end surface of the rotating shaft 30 and the right end wall of the rotating shaft chamber 31, the left end of the rotating shaft 30 is fixedly connected with a rotating shaft gear 36 meshed with the wire wheel gear 37, the upper side of the rotating shaft chamber 31 is communicated with a driving magnetic block chamber 33, and the driving magnetic block 33 is slidably connected with the driving magnetic block 34.
The working chamber 11 rear side is equipped with the reset magnet chamber 59, reset magnet chamber 59 rear side intercommunication is equipped with main magnet chamber 61, reset magnet chamber 59 upside intercommunication is equipped with and hinders magnetic plate chamber 55, it is located to hinder magnetic plate chamber 55 upside intercommunication contact magnetic block chamber 49 of main magnet chamber 61 upside, contact magnetic block chamber 49 upside intercommunication is equipped with friction block chamber 45, sliding connection is equipped with friction block 48 in friction block chamber 45, friction block 48 up end with be fixed through friction block spring 46 between the upper end wall in friction block chamber 45, friction block 48 with fixed connection is equipped with friction block stay cord 47 between the manual reset shaft 16, but contact magnetic block chamber 49 interior sliding connection use can with contact magnetic block 44 of friction block 48 butt, contact magnetic block 44 rear end face with contact magnetic block chamber 49 rear end wall between be fixed through contact magnetic spring 43, contact magnetic block 44 with fixed connection is equipped with contact magnetic stay cord 50 between the initiative magnetic block 34, contact block 48 front end wall fixed connection has the contact magnetic block 44 can trigger magnetic block 51.
The magnetic resistance plate is characterized in that a repulsive magnet 53 is arranged in the magnetic resistance plate cavity 55 in a sliding connection mode, the upper end face of the repulsive magnet 53 is fixed with the upper end wall of the magnetic resistance plate cavity 55 through a repulsive magnet spring 52, a magnetic resistance plate 54 is fixedly connected with the lower end face of the repulsive magnet 53, an automatic reset magnet 57 is arranged in the reset magnet cavity 59 in a sliding connection mode, a friction strip 58 which is in butt joint with the automatic reset magnet 57 is fixedly connected with the lower end wall of the reset magnet cavity 59, an automatic reset pull rope 56 is fixedly connected between the automatic reset magnet 57 and the automatic reset rod 19, a main magnet 63 is arranged in the main magnet cavity 61 in a sliding connection mode, the lower end face of the main magnet 63 is fixed with the lower end wall of the main magnet cavity 61 through a main magnet spring 62, and a main magnet pull rope 60 is fixedly connected between the main magnet 63 and the wire wheel 39.
The pressing plate 20 is internally provided with a supporting rod cavity 21 with a forward opening, the supporting rod 22 can be positioned in the supporting rod cavity 21, the rear end wall of the supporting rod cavity 21 is fixedly connected with a supporting rod spring 23, the left end wall and the right end wall of the supporting rod cavity 21 are rotatably connected with a supporting rod shaft 24, the supporting rod 22 is fixed with the supporting rod shaft 24, and the supporting rod spring 23 can be in supporting connection with the supporting rod 22.
The elastic force of the abutting rod spring 23 is smaller than that of the torsion spring 42, so that the abutting rod spring 23 can be in a compressed state.
The friction force of the contact magnetic block 44 moving forward is larger than the friction force of the contact magnetic block moving backward, the friction force of the automatic reset magnet 57 moving backward is larger than the friction force of the contact magnetic block moving forward, the friction force between the contact magnetic block 44 and the friction block 48 is smaller than the friction force between the automatic reset magnet 57 and the friction strip 58, and the moving speed of the contact magnetic block 44 is larger than the moving speed of the automatic reset magnet 57.
The abutment rod 22 can just support the pressing plate 20 to be unable to reset after abutting against the front end wall of the working chamber 11.
When the invention is used, in an initial state, the left indicator lamp 13 is lighted, the right indicator lamp is not lighted, the abutting rod spring 23 is in a compressed state, and the friction block spring 46 is in a compressed state.
When the fire-fighting manual alarm is mistakenly pressed, namely the pressing plate 20 is pressed once to rotate, the pressing plate 20 rotates to enable the rotating shaft 30 to drive the rotating shaft magnet 32 to rotate, the time for which the rotating shaft magnet 32 corresponds to the active magnetic block cavity 33 is short, the contact magnetic block 44 cannot be contacted with the alarm triggering block 51, at this time, 20 is in a pressing state (20-2 in fig. 7), the rotating shaft gear 36 is driven to rotate by the rotating shaft 30 against the torsion force of the torsion spring 42, the rotating shaft gear 36 rotates to drive the wire wheel shaft 38 to rotate by the wire wheel gear 37, the wire wheel shaft 38 rotates to drive the wire wheel 39 to rotate, the wire wheel 39 rotates to pull the main magnet 63 to move downwards against the thrust of the main magnet spring 62 by the main magnet pull rope 60, at this time, the main magnet 63 corresponds to the reset magnet cavity 59, and the main magnet 63 adsorbs the automatic reset magnet 57 to slowly move backwards under the resistance of the friction bar 58;
the pressing plate 20 rotates, the abutting rod 22 rotates under the action of the elasticity of the abutting rod spring 23, the abutting rod can just abut against the inner wall of the working cavity 11, the pressing plate 20 cannot reset, at the moment, the automatic reset magnet 57 moves backwards, the automatic reset rod 19 is pulled by the automatic reset pull rope 56 to move upwards against the thrust of the reset rod spring 17, the abutting rod 22 rotates reversely until the abutting rod 22 enters the abutting rod cavity 21 again against the elasticity of the abutting rod spring 23 under the action of the torsion force of the torsion spring 42, at the moment, the pressing plate 20 resets, the main magnet pull rope 60 is loosened when the wire wheel 39 rotates, so that the main magnet 63 resets under the action of the thrust of the main magnet spring 62, and the automatic reset magnet 57 also resets under the action of the thrust of the reset rod spring 17;
when a child continuously presses by mistake, namely, the rotating shaft magnet 32 intermittently corresponds to the active magnetic block cavity 33, the pressing plate 20 can reach a two-stage pressing state (20-3 in fig. 7), the two-stage pressing state is achieved, the active magnetic block 34 intermittently pulls the contact magnetic block 44 to move forwards against the tension force of the contact magnetic spring 43 through the contact magnetic pull rope 50, but the contact magnetic block 44 always cannot contact the alarm triggering block 51 due to the fact that the forward moving friction force is larger than the backward moving friction force, an alarm signal cannot be generated, meanwhile, the main magnet 63 can move downwards to be separated from the reset magnet cavity 59, the automatic reset magnet 57 can be always in an initial state, and the pressing plate 20 can be automatically reset when the child stops playing;
when an alarm needs to be started, the pressing plate 20 is pressed to a two-stage state (20-3 in fig. 7) and is always kept motionless, at the moment, the rotating shaft magnet 32 always corresponds to the active magnetic block cavity 33, the active magnetic block 34 pulls the contact magnetic block 44 to overcome the tensile force of the contact magnetic spring 43 through the contact magnetic pull rope 50, the active magnetic block 34 always moves forwards until the contact magnetic block 44 contacts with the alarm triggering block 51, at the moment, the just-contacted magnetic block 44 is separated from the lower end face of the friction block 48, the friction block 48 moves downwards under the thrust of the friction block spring 46 so as to limit the contact magnetic block 44 to reset, and meanwhile, the contact magnetic block 44 also corresponds to the magnetic blocking plate cavity 55, so that the contact magnetic block 44 repels the repulsive magnet 53 to drive the magnetic blocking plate 54 downwards against the tensile force of the repulsive magnet spring 52, the main magnet 63 is blocked to continuously adsorb the automatic reset magnet 57 before the pressing plate 20 can reset, when the alarm triggering block 51 is contacted, the right indicator lamp 13 lights up, at the moment, the alarm signal is sent out to loose the pressing plate 20, the pressing plate 20 always cannot reset, and repeated alarm of subsequent refuders is avoided;
when the firefighter arrives at the scene, the manual reset shaft 16 can be rotated by a key, and the manual reset shaft 16 can drive the automatic reset rod 19 and the friction block 48 to move upwards by the reset pull rope 35 and the friction block pull rope 47, so that the pressing plate 20 and the contact magnetic block 44 are reset, and at the moment, the contact magnetic block 44 abuts against the friction block 48, so that the friction block spring 46 is in a compressed state.
While the invention has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.
Claims (1)
1. Manual fire alarm with prevent mistake and touch, its characterized in that: comprises an alarm box (10), a pressing plate (20) positioned in the alarm box (10) and a rotating shaft (30); a working cavity (11) is arranged in the alarm box (10), and a slidable automatic reset rod (19) is arranged in the alarm box (10); the pressing plate (20) is positioned in the working cavity (11), the pressing plate (20) is positioned at the lower side of the rotating shaft (30) and is fixed on the rotating shaft (30), and a rotatable abutting rod (22) is arranged in the pressing plate (20); a rotating shaft magnet (32) is fixedly arranged in the rotating shaft (30); the automatic reset rod is characterized in that a communication cavity (12) with a forward opening is arranged on the front side of the working cavity (11), an automatic reset rod cavity (18) located on the lower side of the communication cavity (12) is arranged on the front side of the working cavity (11), a manual reset shaft cavity (14) with a forward opening is arranged on the lower side of the working cavity (11), a manual reset shaft (16) is connected and connected in a rotating fit mode with the rear end wall of the manual reset shaft cavity (14), a limiting cavity (15) with a forward opening is arranged in the manual reset shaft (16), the automatic reset rod (19) is in sliding fit with the automatic reset rod cavity (18) and located on the lower side of the pressing plate (20), a reset rod spring (17) is fixedly connected between the upper end face of the automatic reset rod (19) and the upper end wall of the automatic reset rod cavity (18), a reset pull rope (35) is fixedly connected between the automatic reset rod (19) and the manual reset shaft (16), and two symmetrically arranged indicator lamps (13) are fixedly connected on the upper end wall of the working cavity (11); the automatic transmission device is characterized in that a rotating shaft cavity (31) is arranged on the right side of the working cavity (11), a transmission cavity (41) is arranged on the left side of the working cavity (11), a wire wheel cavity (40) is arranged on the left side of the transmission cavity (41), a wire wheel shaft (38) which extends leftwards into the wire wheel cavity (40) and rightwards into the transmission cavity (41) is arranged in a rotating fit connection mode in the left end wall of the transmission cavity (41), a wire wheel (39) is fixedly connected to the left side end of the wire wheel shaft (38), a wire wheel gear (37) is fixedly connected to the right side end of the wire wheel shaft (38), a rotating shaft (30) is in rotating fit with the rotating shaft cavity (31) and leftwards extends into the transmission cavity (41), a torsion spring (42) is fixedly connected between the right end face of the rotating shaft (30) and the right end wall of the rotating shaft cavity (31), a rotating shaft gear (36) which is meshed with the wire wheel (37) is arranged in a fixed connection mode in the left side end of the rotating shaft (30), a driving magnetic block cavity (33) is arranged on the upper side of the rotating shaft cavity (31), and the driving magnetic block (33) is slidably connected to the driving block (33); the utility model discloses a magnetic power device, including work cavity (11), reset magnet cavity (59) rear side intercommunication is equipped with main magnet cavity (61), reset magnet cavity (59) upside intercommunication is equipped with and hinders magnetic plate cavity (55), hinder magnetic plate cavity (55) upside intercommunication is equipped with and is located contact magnetic shoe cavity (49) of main magnet cavity (61) upside, contact magnetic shoe cavity (49) upside intercommunication is equipped with friction block cavity (45), sliding connection is equipped with friction block (48) in friction block cavity (45), fixed through friction block spring (46) between friction block (48) up end and friction block cavity (45) up end, fixed connection is equipped with friction block stay cord (47) between friction block (48) and manual reset shaft (16), but contact magnetic shoe cavity (49) interior sliding connection use can with contact magnetic shoe (44) of friction block (48) butt, contact magnetic shoe cavity (44) rear end face with be equipped with friction block cavity (45) sliding connection is equipped with friction block (48), be equipped with between initiative magnetic connection and magnetic shoe (34) through friction block spring (46), an alarm triggering block (51) which can be contacted with the contact magnetic block (44) is fixedly connected in the front end wall of the contact magnetic block cavity (49); the magnetic resistance device is characterized in that a repulsive magnet (53) is arranged in the magnetic resistance plate cavity (55) in a sliding connection mode, the upper end face of the repulsive magnet (53) is fixed with the upper end wall of the magnetic resistance plate cavity (55) through a repulsive magnet spring (52), a magnetic resistance plate (54) is fixedly connected with the lower end face of the repulsive magnet (53), an automatic reset magnet (57) is arranged in the sliding connection mode in the reset magnet cavity (59), a friction strip (58) which is abutted to the automatic reset magnet (57) is fixedly connected with the lower end wall of the reset magnet cavity (59), an automatic reset pull rope (56) is fixedly connected between the automatic reset magnet (57) and the automatic reset rod (19), a main magnet (63) is arranged in the sliding connection mode in the main magnet cavity (61), the lower end face of the main magnet (63) is fixed with the lower end wall of the main magnet cavity (61) through a main magnet spring (62), and a main magnet (60) is fixedly connected between the main magnet (63) and the wire wheel (39); a supporting rod cavity (21) with a forward opening is arranged in the pressing plate (20), the supporting rod (22) can be positioned in the supporting rod cavity (21), a supporting rod spring (23) is fixedly connected to the rear end wall of the supporting rod cavity (21), a supporting rod shaft (24) is rotatably connected to the left end wall and the right end wall of the supporting rod cavity (21), the supporting rod (22) is fixed with the supporting rod shaft (24), and the supporting rod spring (23) can be in supporting connection with the supporting rod (22); the elasticity of the abutting rod spring (23) is smaller than that of the torsion spring (42), so that the abutting rod spring (23) can be in a compressed state; the friction force of the forward movement of the contact magnetic block (44) is larger than the friction force of the backward movement, the friction force of the backward movement of the automatic reset magnet (57) is larger than the friction force of the forward movement of the automatic reset magnet, the friction force between the contact magnetic block (44) and the friction block (48) is smaller than the friction force between the automatic reset magnet (57) and the friction strip (58), and the moving speed of the contact magnetic block (44) is larger than the moving speed of the automatic reset magnet (57); the supporting rod (22) can just support the pressing plate (20) to be unable to reset after being abutted against the front end wall of the working cavity (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110380960.5A CN113066250B (en) | 2021-04-09 | 2021-04-09 | Manual fire alarm with prevent mistake and touch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110380960.5A CN113066250B (en) | 2021-04-09 | 2021-04-09 | Manual fire alarm with prevent mistake and touch |
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| Publication Number | Publication Date |
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| CN113066250A CN113066250A (en) | 2021-07-02 |
| CN113066250B true CN113066250B (en) | 2023-06-13 |
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| CN202110380960.5A Active CN113066250B (en) | 2021-04-09 | 2021-04-09 | Manual fire alarm with prevent mistake and touch |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9286790B2 (en) * | 2014-05-23 | 2016-03-15 | Emergency Alert Solutions Group, Llc | Lockdown apparatus for initiation of lockdown procedures at a facility during an emergency |
| CN209328171U (en) * | 2019-03-01 | 2019-08-30 | 武汉恒安数联电子科技有限公司 | A kind of manual fire alarm call point for preventing from accidentally touching |
| CN210488728U (en) * | 2019-11-20 | 2020-05-08 | 田君 | Fire alarm device mounting box |
| CN111005645B (en) * | 2020-01-14 | 2020-11-20 | 苏州贡湖精密制造产业发展有限公司 | Automatic sliding door with alarm function based on voice control |
| CN112249831A (en) * | 2020-12-02 | 2021-01-22 | 温州微计智能科技有限公司 | Double-door elevator capable of automatically calling and preventing people from blocking |
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Effective date of registration: 20230426 Address after: 529000 fourth and fifth floors of workshop 1, building 2 and workshop 2, building 3, No. 7, Henghai Road, Jianghai District, Jiangmen City, Guangdong Province Applicant after: GUANGDONG DONGJUN LIGHTING Co.,Ltd. Address before: No. 152, Yingchun West Road, Taishan District, Tai'an City, Shandong Province 271000 Applicant before: Taian shinuo Technology Co.,Ltd. |
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