Fireproof door open state monitoring device

Abstract

This utility model relates to the field of fire door monitoring technology, and more particularly to a fire door normally open status monitoring device, including a frame, a fire door, a support plate, a first magnet, a tilt detector, a rotating rod, a fixing plate, a second magnet, an alarm, a controller, and mechanical monitoring components. The fire door is rotatably connected to the frame via hinges. Both the frame and the fire door are made of metal. A mounting groove is provided on the right side of the upper front of the frame. The first magnet is embedded in the rear side wall of the support plate, and the support plate is magnetically attracted and fixed to the frame mounting groove through the first magnet. The tilt detector detects the rotation angle of the fire door in real time. When the detected opening angle exceeds a set threshold, the controller automatically triggers the alarm to issue a voice prompt, and simultaneously uploads the status information to a remote monitoring system, realizing timely perception, on-site warning, and remote recording of the fire door's normally open status, improving the response efficiency of fire management.

Description

Technical Field

[0001] This utility model relates to the field of fire door monitoring technology, and in particular to a fire door normally open status monitoring device. Background Technology

[0002] Fire doors are crucial fire-resistant partitions in buildings. Their design purpose is to effectively prevent the spread of fire and smoke during a fire, buying valuable time for evacuation and fire rescue. Maintaining their closed state is a key prerequisite for achieving this function.

[0003] However, in actual daily management and use, fire doors are often deliberately opened or kept open by using door wedges or other objects to facilitate personnel passage or the movement of goods. This oversight in management prevents fire doors from closing automatically in the event of a fire, causing their fire-resistant separation function to completely fail and creating a significant safety hazard.

[0004] Currently, monitoring the status of fire doors mainly relies on electronic sensors, such as magnetic door switches or tilt detectors. These solutions typically require a continuous power supply and can transmit the detected "open / closed" status signal to a local alarm or central monitoring system for remote monitoring. While these systems are effective under normal power conditions, they have significant limitations: First, the system is highly dependent on a continuous power supply; in emergency situations such as power outages or system malfunctions, the entire monitoring function will immediately fail, providing no status indications or alarms. Second, existing alarm methods primarily focus on remote notifications, lacking sufficient immediate and effective reminders to personnel passing through the area, and failing to effectively urge them to promptly close the fire doors.

[0005] Therefore, there is an urgent need for a fire door status monitoring device that can operate reliably with or without mains power, and that combines remote monitoring with efficient on-site alerts, in order to solve the problems of strong dependence on power supply and weak emergency response capabilities of existing technologies. Utility Model Content

[0006] In order to overcome the shortcomings mentioned in the background art, this utility model provides a fire door normally open status monitoring device.

[0007] The technical solution of this utility model is as follows: a fire door normally open status monitoring device, including a frame, a fire door, a support plate, a magnet one, a tilt detector, a rotating rod, a fixed plate, a magnet two, an alarm, a controller, and a mechanical monitoring component. The fire door is rotatably connected to the frame via hinges. Both the frame and the fire door are made of metal. An installation groove is provided on the right side of the upper front of the frame. A magnet one is embedded in the rear side wall of the support plate. The support plate is magnetically attracted and fixed to the frame installation groove through the magnet one. A tilt detector is rotatably connected to the support plate via a bearing. A rotating rod is connected to the left side of the tilt detector. A fixed plate is fixedly connected to the left end of the rotating rod. The rear side wall of the fixed plate is tightly fitted to the front side of the fire door. A magnet two is embedded in the rear side wall of the fixed plate. The magnet two forms a magnetic attraction with the fire door. An alarm is symmetrically installed on the upper rear side of the frame. A controller is installed in the middle of the upper part of the frame. The alarm and the tilt detector are electrically connected to the controller via wires. The controller is also electrically connected to a remote monitoring system via a communication module. A mechanical monitoring component is provided on the frame.

[0008] In one embodiment, magnet one is a neodymium iron boron permanent magnet.

[0009] In one embodiment, the mechanical monitoring component includes a connecting ring, a connecting rope, a limiting roller, a sliding plate, a bell, and a return spring. The connecting ring is fixedly connected to the left side of the rotating rod. The limiting roller is rotatably connected to the upper left side of the frame via a pin. The connecting rope is wound around the limiting roller. A slide rail is provided on the upper part of the frame. A sliding plate is slidably connected to the right side of the slide rail. A bell is installed on the sliding plate. One end of the connecting rope passes through the side wall of the slide rail and is fixedly connected to the left side wall of the sliding plate. The other end passes through the controller housing and is fixedly connected to the connecting ring. A return spring is connected between the left side of the sliding plate and the left end face of the slide rail.

[0010] In one embodiment, the connecting rope is a steel wire rope.

[0011] In one embodiment, an indicator light is also included, which is fixedly installed on the upper rear side of the frame in the area between the two alarms. The indicator light is electrically connected to the controller via a wire.

[0012] In one embodiment, a noise-reducing shell is also included, with the upper part of the frame fixedly connected to the area in front of the bell.

[0013] The beneficial effects are as follows: 1. The tilt detector detects the rotation angle of the fire door in real time. When the opening angle exceeds the set threshold, the controller automatically triggers the alarm to issue a voice prompt and uploads the status information to the remote monitoring system, so as to realize timely perception, on-site warning and remote recording of the fire door's open state, and improve the response efficiency of fire management.

[0014] 2. In the event of a power outage, the mechanical transmission mechanism consisting of a connecting ring, connecting rope, sliding plate, and bell converts the opening and closing of the door into an audible signal from the bell, providing an opening and closing reminder in the absence of power and ensuring that the device can still work reliably in emergency situations.

[0015] 3. While issuing an audible warning, the controller simultaneously illuminates the indicator light to provide lighting for people passing by and improve the visual environment; in addition, the mechanical bell and electronic alarm work together to form a multi-mode prompting that combines sound, light and mechanical vibration, making it applicable to a wider range of scenarios and providing a more comprehensive reminder effect. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a three-dimensional structural diagram of the support plate, magnet, and tilt detector of this utility model.

[0018] Figure 3 This is a three-dimensional structural diagram of the indicator light, alarm, and frame components of this utility model.

[0019] Figure 4 This is a three-dimensional structural diagram of the connecting ring, connecting rope, and limiting roller of this utility model.

[0020] Figure 5 This is a three-dimensional structural diagram of the sliding plate, return spring, and frame components of this utility model.

[0021] Figure 6 This is a three-dimensional structural diagram of the components of this utility model, including the limiting roller, sliding plate, and bell.

[0022] The markings in the diagram are as follows: 1-Frame, 101-Fire door, 2-Support plate, 201-Magnet one, 3-Tilt detector, 4-Rotating rod, 5-Fixing plate, 6-Magnet two, 7-Indicator light, 8-Alarm, 9-Connecting ring, 10-Connecting rope, 12-Limiting roller, 13-Sliding plate, 15-Bell, 16-Return spring, 17-Controller, 18-Noise reduction shell. Detailed Implementation

[0023] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0024] Example: A fire door normally open status monitoring device, such as Figures 1-6As shown, the system includes a frame 1, a fire door 101, a support plate 2, a magnet 201, a tilt detector 3, a rotating rod 4, a fixing plate 5, a second magnet 6, an indicator light 7, an alarm 8, a controller 17, and mechanical monitoring components. The fire door 101 is rotatably connected to the frame 1 via hinges, ensuring that the fire door 101 can open and close around the hinge axis. Both the frame 1 and the fire door 101 are made of metal, providing a basis for magnetic adsorption. A mounting groove is provided on the right side of the upper front of the frame 1. The magnet 201 is embedded in the rear side wall of the support plate 2. The support plate 2 is connected to the frame 1 via the magnet 201. The mounting groove forms a magnetic adsorption fixation, enabling the support plate 2 to be detachably positioned in the mounting groove and facilitating later maintenance and adjustment. Magnet 201 is a neodymium iron boron permanent magnet, which can provide extremely strong magnetic attraction, ensuring that the support plate 2 is more firmly attached to the frame 1, effectively preventing it from falling off or shifting due to vibration or accidental contact, and ensuring the continuity of monitoring. An angle detector 3 is rotatably connected to the support plate 2 via a bearing. A rotating rod 4 is fixedly connected to the left side of the angle detector 3. The rotation axis of the rotating rod 4 is collinear with the rotation axis of the fire door 101 around the hinge, ensuring the synchronous rotation consistency of the rotating rod 4 and the fire door 101. A fixing plate 5 is fixedly connected to the left end of the rotating rod 4. The rear side wall of the fixing plate 5 is tightly fitted to the front side of the fire door 101. A magnet 6 is embedded in the rear side wall of the fixing plate 5, and the magnet 6 forms a magnetic attraction with the fire door 101. This engagement method ensures the synchronicity of the fixing plate 5 with the rotation of the fire door 101 and avoids hard jamming between the two, ensuring transmission reliability. An alarm 8 is symmetrically installed on the left and right sides of the upper rear side of the frame 1 by bolts. A controller 17 is installed in the middle of the upper part of the frame 1 by bolts. The alarm 8 and the tilt detector 3 are both connected to the controller 17 by wires. In addition to the electrical connection, the controller 17 also establishes an electrical connection with the remote monitoring system through the communication module, realizing the real-time transmission, recording and remote monitoring of the status data of the fire door 101. The frame 1 is equipped with a mechanical monitoring component. The upper rear side of the frame 1, located between the two alarms 8, is equipped with an indicator light 7 by bolts. The indicator light 7 is electrically connected to the controller 17 through wires. When the alarm 8 is activated, the controller 17 synchronously outputs a control signal to the indicator light 7 to turn on the indicator light 7. The light helps personnel to identify the status of the fire door 101 and enter and exit safely. After the fire door 101 is closed, the indicator light 7 turns off.

[0025] When the fire door 101 rotates around the hinge in the opening direction, the fire door 101 drives the fixing plate 5 to rotate synchronously through the magnetic attraction of the second magnet 6. The fixing plate 5 drives the rotating rod 4 and the tilt detector 3 to rotate around the bearing axis. The tilt detector 3 collects its own rotation angle in real time and compares the real-time angle with the preset initial angle (the reference angle of the tilt detector 3 when the fire door 101 is closed). When the difference between the real-time angle and the initial angle exceeds the preset threshold (e.g., 5°, which can be adjusted according to the actual scenario), the tilt detector 3 determines that the fire door 101 is in the open state and immediately sends a trigger signal to the controller 17. After receiving the trigger signal, the controller 17 outputs a control signal to the alarm 8, causing the alarm 8 to start and play a preset voice prompt, such as "Fire door 101..." "Open, please close immediately." Simultaneously, the open status information and corresponding timestamp of the fire door 101 are transmitted to the remote monitoring system via the communication module. The remote monitoring system stores and records the data for later traceability. When the fire door 101 rotates towards the closing direction, the fire door 101 drives the fixing plate 5 to synchronously reverse and reset via magnet 6. The fixing plate 5 drives the rotating rod 4 and the tilt detector 3 to reverse and reset around the bearing axis. When the real-time angle detected by the tilt detector 3 matches the initial angle, it is determined that the fire door 101 is in the closed state, and a reset signal is sent to the controller 17. After receiving the reset signal, the controller 17 shuts down the alarm 8, terminates the audible and visual prompts, and transmits the closed status information and corresponding timestamp of the fire door 101 to the remote monitoring system, completing the status update.

[0026] like Figure 2 and Figures 4-6As shown, the mechanical monitoring component includes a connecting ring 9, a connecting rope 10, a limiting roller 12, a sliding plate 13, a bell 15, a return spring 16, and a noise reduction shell 18. The connecting ring 9 is fixedly connected to the left side of the rotating rod 4. The limiting roller 12 is rotatably connected to the upper left side of the frame 1 via a shaft pin. The connecting rope 10 is wound around the limiting roller 12. A slide rail is provided on the upper part of the frame 1. The sliding plate 13 is slidably connected to the right side of the slide rail. The bell 15 is installed on the sliding plate 13. The bell 15 consists of a metal cavity and an internal metal ball. One end of the connecting rope 10 passes through the side wall of the slide rail and is fixedly connected to the left side wall of the sliding plate 13. The other end passes through the housing of the controller 17 (the housing has an adapter hole for threading rope) and is fixedly connected to the connecting ring 9. The left side of the sliding plate 13 is connected to the left end face of the slide rail. A return spring 16 is connected between the two parts. The return spring 16 is sleeved on the outside of the connecting rope 10. The connecting rope 10 is a steel wire rope, which has the characteristics of high strength, not easy to stretch and deform, wear resistance and fire resistance. It ensures the effectiveness and durability of the mechanical transmission mechanism in long-term use or emergency situations. The area in front of the bell 15 on the upper part of the frame 1 is connected to a noise reduction shell 18 by bolts. The inner cavity size of the noise reduction shell 18 is adapted to the shape of the bell 15. When the bell 15 is in an unused state (i.e. the sliding plate 13 is in the right limit position of the slide rail), the rear end of the noise reduction shell 18 is tightly fitted with the front side of the sliding plate 13 to form a closed structure for the bell 15. This can effectively prevent the bell 15 from being accidentally triggered to produce sound due to wind, external vibration and other factors, thus avoiding noise pollution.

[0027] When the device malfunctions due to a power outage, causing the tilt detector 3, controller 17, alarm 8, and indicator light 7 to fail, the fire door 101 opens. Magnet 2 6 drives the fixed plate 5, rotating rod 4, and connecting ring 9 to rotate synchronously. The connecting ring 9 pulls the connecting rope 10, which, guided by the limit roller 12, moves the sliding plate 13 to the left along the slide rail. The return spring 16 compresses, and the bell 15 moves and shakes with the sliding plate 13, causing the built-in metal pellets to strike the cavity and produce a sound, indicating to personnel that "fire door 101 is open." When 01 is closed, the fixed plate 5, rotating rod 4, and connecting ring 9 reverse and reset, the connecting rope 10 is released, the return spring 16 elastically restores and pushes the sliding plate 13 to move to the right and reset. The bell 15 moves with the sliding plate 13 and shakes again to sound, indicating to personnel that "fire door 101 is closed". This device can effectively monitor the normally open state of fire door 101 under both normal power supply and power outage conditions. Under normal power supply, the tilt detector 3 and the bell 15 prompt system work together to form a dual warning mechanism.

Claims

1. A fire door normally open status monitoring device, characterized in that: The system includes a frame (1), a fire door (101), a support plate (2), a magnet (201), a tilt detector (3), a rotating rod (4), a fixing plate (5), a magnet (6), an alarm (8), a controller (17), and mechanical monitoring components. The fire door (101) is rotatably connected to the frame (1) via hinges. Both the frame (1) and the fire door (101) are made of metal. An installation groove is provided on the right side of the upper front of the frame (1). A magnet (201) is installed in an embedded manner on the rear side wall of the support plate (2). The support plate (2) is magnetically attracted and fixed to the frame (1) via the installation groove of the magnet (201). The tilt detector (3) is rotatably connected to the support plate (2) via a bearing. The tilt detector (3) is connected to a rotating rod (4) on the left side. The left end of the rotating rod (4) is fixedly connected to a fixing plate (5). The rear side wall of the fixing plate (5) is tightly fitted to the front side of the fire door (101). The rear side wall of the fixing plate (5) is fitted with a magnet (6) in an embedded manner. The magnet (6) and the fire door (101) form a magnetic adsorption fit. The rear side of the upper part of the frame (1) is symmetrically fitted with an alarm (8). The middle of the upper part of the frame (1) is fitted with a controller (17). The alarm (8) and the tilt detector (3) are electrically connected to the controller (17) through wires. The controller (17) is also electrically connected to the remote monitoring system through a communication module. The frame (1) is equipped with a mechanical monitoring component.

2. The fire door normally open status monitoring device as described in claim 1, characterized in that: Magnet 1 (201) is a neodymium iron boron permanent magnet.

3. The fire door normally open status monitoring device as described in claim 1, characterized in that: The mechanical monitoring component includes a connecting ring (9), a connecting rope (10), a limiting roller (12), a sliding plate (13), a bell (15), and a return spring (16). The left side of the rotating rod (4) is fixedly connected to the connecting ring (9). The upper left side of the frame (1) is rotatably connected to the limiting roller (12) through a shaft pin. The connecting rope (10) is wound around the limiting roller (12). The upper part of the frame (1) is provided with a slide rail. The right side of the slide rail is slidably connected to the sliding plate (13). The bell (15) is installed on the sliding plate (13). One end of the connecting rope (10) passes through the side wall of the slide rail and is fixedly connected to the left side wall of the sliding plate (13). The other end passes through the housing of the controller (17) and is fixedly connected to the connecting ring (9). The left side of the sliding plate (13) is connected to the left end face of the slide rail. The return spring (16) is connected between the left side of the sliding plate (13) and the left end face of the slide rail.

4. The fire door normally open status monitoring device as described in claim 3, characterized in that: The connecting rope (10) is a steel wire rope.

5. The fire door normally open status monitoring device as described in claim 1, characterized in that: It also includes an indicator light (7), which is fixedly installed on the upper rear side of the frame (1) in the area between the two alarms (8). The indicator light (7) is electrically connected to the controller (17) through a wire.

6. The fire door normally open status monitoring device as described in claim 3, characterized in that: It also includes a noise-reducing shell (18), and the area on the upper part of the frame (1) in front of the bell (15) is fixedly connected to the noise-reducing shell (18).

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