Emergency safety alarm device

Abstract

The utility model provides an alarm device for emergency safety. The alarm device comprises a mounting plate; and the supporting frame is fixedly mounted at the bottom of the mounting plate, a fixing frame is fixedly mounted on one side of the supporting frame, and a driving motor is fixedly mounted on one side of the fixing frame. According to the emergency safety alarm device provided by the utility model, through mutual cooperation of the driving motor, the worm, the worm gear, the rotating shaft, the winding wheel, the pull rope, the fixed plate, the support frame, the first contact terminal, the second contact terminal and other structures, when the device operates, the driving motor is started to drive the worm to rotate, and then the worm drives the worm gear to operate; by means of the self-locking characteristic of the worm and gear mechanism, after the driving motor stops working, the worm gear and a part connected with the worm gear can stably maintain the current position, the characteristic not only avoids random lifting of the alarm device body caused by accidents, guarantees the stability of the alarm device body during working, but also ensures that the alarm sensor is always located at the optimal detection position, and improves the detection accuracy. And the detection precision is improved.

Description

Technical Field

[0001] This utility model relates to the field of indoor security alarm technology, and in particular to an emergency safety alarm device. Background Technology

[0002] Alarm devices are information display devices that indicate malfunctions, accidents, or dangerous situations. Based on the characteristics of the codes used and the nature of the sensory channels through which information is received, they can be divided into visual alarms, auditory alarms, tactile alarms, and olfactory alarms. With the development of technology, alarms can be remotely connected and controlled via the Internet of Things (IoT), and can use technologies such as image capture to determine emergencies such as unauthorized intrusions. In order to increase security when no one is home and to manage emergency situations, alarm devices are also used to warn and alert when a burglar is found in the home.

[0003] For example, in the prior art, patent application CN 211294141 U describes a mounting plate on the lower surface of a fixing ring, with hanging ears at both ends of the mounting plate. A support disc is located below the mounting plate, and a support spring is installed at the connection between the mounting plate and the support disc. The main body of the alarm device is located below the support disc, and a positioning post is installed at the connection between the alarm device main body and the support disc. Hanging rings are symmetrically arranged at the center of the upper surface of the fixing ring, and a height adjustment mechanism is provided above the hanging rings. When the indoor security alarm device installed on the ceiling malfunctions, the user can lower the height of the alarm device main body through the height adjustment mechanism. At this time, the user can directly repair the indoor security alarm device without having to stand on a ladder, making the repair of the indoor security alarm device more convenient, time-saving, and labor-saving.

[0004] However, when using this device, the lifting mechanism of the main body of the alarm device requires redundant power lines and network transmission lines, which increases the initial installation cost. Secondly, when the height is adjusted, the device lacks a reliable mechanical limit mechanism, and the main body is prone to displacement under the action of gravity, which not only affects the detection accuracy of the alarm sensor, but may also cause the adjusted position to be unstable.

[0005] Therefore, it is necessary to provide an emergency safety alarm device to solve the above-mentioned technical problems. Utility Model Content

[0006] This utility model provides an emergency safety alarm device that solves the problems of existing alarm devices requiring redundant cables to be laid when raising and lowering, increasing costs, and lacking reliable limit switches after height adjustment, resulting in unstable positions and affecting detection accuracy.

[0007] To solve the above-mentioned technical problems, this utility model provides an emergency safety alarm device, comprising:

[0008] Mounting plate;

[0009] A support frame is fixedly installed on the bottom of the mounting plate. A fixed frame is fixedly installed on one side of the support frame. A drive motor is fixedly installed on one side of the fixed frame. A worm gear is fixedly installed at the output end of the drive motor. A worm wheel meshes with the top of the worm gear. A rotating shaft is fixedly installed inside the worm wheel. Two winding wheels are fixedly installed on the outer side of the rotating shaft. Pull ropes are wound around the outer sides of both winding wheels.

[0010] A fixing plate is provided at the bottom of the support frame, and the bottom of the pull rope is fixedly installed on the top of the fixing plate;

[0011] A support frame is fixedly installed on the bottom of the mounting plate. A first contact terminal is fixedly installed on the bottom of the support frame. A second contact terminal is provided at the bottom of the first contact terminal. The bottom of the second contact terminal is fixedly installed on the top of the mounting plate.

[0012] The safety alarm device body is fixedly installed on the bottom of the fixing plate.

[0013] Preferably, the mounting plate has multiple mounting holes at its edge.

[0014] Preferably, one end of the rotating shaft is rotatably connected to one side of the inner side of the support frame, and both of the winding wheels are disposed on the inner side of the support frame.

[0015] Preferably, a limit frame is fixedly installed on the top of the fixed plate, and counterweights are fixedly installed at both ends of the top of the fixed plate.

[0016] Preferably, the outer side of the limiting frame is attached to the inner side of the support frame.

[0017] Preferably, a mounting plate is fixedly installed on the top of the support frame, and a push switch is fixedly installed on the bottom of the mounting plate.

[0018] Preferably, the bottom of the push switch abuts against the top of the counterweight.

[0019] Compared with related technologies, the emergency safety alarm device provided by this utility model has the following advantages:

[0020] Beneficial effects:

[0021] This utility model provides an emergency safety alarm device. Through the cooperation of a drive motor, worm gear, worm wheel, rotating shaft, winding wheel, pull rope, fixing plate, support frame, first contact terminal and second contact terminal, etc., when the device is running, the drive motor starts and drives the worm gear to rotate. The worm gear then drives the worm wheel to rotate. With the help of the self-locking characteristics of the worm gear mechanism, when the drive motor stops working, the worm wheel and the connected components can stably maintain their current position. This feature not only avoids the alarm device body from rising and falling arbitrarily due to accidents, ensuring its stability during operation, but also ensures that the alarm sensor is always in the optimal detection position, improving detection accuracy.

[0022] Furthermore, the design of the first and second contact terminals avoids the need for lengthy power cables and network transmission lines to accommodate the lifting and lowering of the device, thereby reducing the initial installation cost. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a first embodiment of an emergency safety alarm device provided by this utility model;

[0024] Figure 2 for Figure 1 The diagram shows a cross-sectional structure.

[0025] Figure 3 for Figure 2 The enlarged schematic diagram of part A shown below;

[0026] Figure 4 for Figure 2 The enlarged schematic diagram of section B is shown below;

[0027] Figure 5 This is a schematic diagram of the structure of a second embodiment of an emergency safety alarm device provided by this utility model.

[0028] The following are the labels in the diagram: 1. Mounting plate, 11. Mounting hole, 2. Support frame, 21. Fixing frame, 22. Drive motor, 23. Worm gear, 24. Worm wheel, 25. Shaft, 26. Winding wheel, 27. Pull rope, 3. Fixing plate, 31. Limiting frame, 32. Counterweight, 4. Support frame, 41. First contact terminal, 42. Second contact terminal, 5. Safety alarm device body, 6. Mounting plate, 61. Press switch. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0030] First Embodiment

[0031] Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4,in, Figure 1 This is a schematic diagram of the structure of a first embodiment of an emergency safety alarm device provided by this utility model; Figure 2 for Figure 1 The diagram shows a cross-sectional structure. Figure 3 for Figure 2 The enlarged schematic diagram of part A shown below; Figure 4 for Figure 2 The enlarged schematic diagram of section B is shown. An emergency safety alarm device includes: a mounting plate 1;

[0032] A support frame 2 is fixedly installed at the bottom of the mounting plate 1. A fixing frame 21 is fixedly installed on one side of the support frame 2. A drive motor 22 is fixedly installed on one side of the fixing frame 21. A worm gear 23 is fixedly installed at the output end of the drive motor 22. A worm wheel 24 is meshed at the top of the worm gear 23. A rotating shaft 25 is fixedly installed inside the worm wheel 24. Two winding wheels 26 are fixedly installed on the outer side of the rotating shaft 25. A pull rope 27 is wound around the outer side of both winding wheels 26.

[0033] A fixing plate 3 is disposed at the bottom of the support frame 2, and the bottom of the pull rope 27 is fixedly installed on the top of the fixing plate 3;

[0034] Support frame 4 is fixedly installed on the bottom of mounting plate 1. A first contact terminal 41 is fixedly installed on the bottom of support frame 4. A second contact terminal 42 is provided on the bottom of the first contact terminal 41. The bottom of the second contact terminal 42 is fixedly installed on the top of mounting plate 3.

[0035] The safety alarm device body 5 is fixedly installed on the bottom of the fixing plate 3.

[0036] The mounting plate 1 has multiple mounting holes 11 at its edge.

[0037] The mounting holes 11 on the mounting plate 1 make it easy for workers to install the mounting plate 1 on the ceiling.

[0038] One end of the rotating shaft 25 is rotatably connected to one side of the inner side of the support frame 2, and both of the winding wheels 26 are disposed on the inner side of the support frame 2.

[0039] A limit frame 31 is fixedly installed on the top of the fixed plate 3, and counterweights 32 are fixedly installed at both ends of the top of the fixed plate 3.

[0040] By setting the counterweight 32, the weight of the fixing plate 3 can be increased during use, making it easier to separate the first contact terminal 41 and the second contact terminal 42 by weight.

[0041] The outer side of the limiting frame 31 is attached to the inner side of the support frame 2.

[0042] The first contact terminal 41 is fixedly installed at the bottom of the support frame 4. It mainly consists of conductive contacts, an insulating shell, and connecting lines. The conductive contacts are made of highly conductive copper alloy material and are silver-plated to reduce contact resistance, power loss, and heat generation. The insulating shell is made of high-strength, high-temperature resistant engineering plastic, which not only protects the conductive contacts from the influence of the external environment but also prevents electric shock to operators, ensuring safe use. The connecting lines are connected to the conductive contacts by welding, and these lines introduce power and network signals into the first contact terminal 41. The second contact terminal 42 is fixedly installed on the top of the fixing plate 3. Its structure is similar to that of the first contact terminal 41, also including conductive contacts, an insulating shell, and connecting lines. The difference is that the conductive contacts of the second contact terminal 42 are designed to match the shape of the conductive contacts of the first contact terminal 41 to ensure a good electrical connection when in contact. The connecting lines connect the second contact terminal 42 to the safety alarm device body 5, and are used to transmit power and network signals to the safety alarm device body 5.

[0043] The working principle of the emergency safety alarm device provided by this utility model is as follows:

[0044] When using the device, if the height of the safety alarm device body 5 needs to be adjusted, the user can start the drive motor 22, which will drive the worm gear 23 and worm wheel 24 to mesh, thereby causing the worm wheel 24 to drive the rotating shaft 25 and the winding wheel 26 to rotate, thus releasing the pull rope 27 from the outer side of the winding wheel 26, thereby causing the fixing plate 3 to move the safety alarm device body 5 downward. At this time, the first contact terminal 41 and the second contact terminal 42 are separated.

[0045] After the maintenance of the safety alarm device body 5 is completed, the drive motor 22 can be started again, thereby moving the safety alarm device body 5 upward, so that the first contact terminal 41 and the second contact terminal 42 make contact, thereby achieving the effect of powering on and connecting the safety alarm device body 5 to the network.

[0046] Compared with related technologies, the emergency safety alarm device provided by this utility model has the following advantages:

[0047] Beneficial effects:

[0048] Through the coordinated operation of the drive motor 22, worm 23, worm wheel 24, rotating shaft 25, winding wheel 26, pull rope 27, fixing plate 3, support frame 4, first contact terminal 41 and second contact terminal 42, the drive motor 22 starts when the device is running, driving the worm 23 to rotate. The worm 23 then drives the worm wheel 24 to rotate. With the help of the self-locking characteristic of the worm wheel and worm gear mechanism, when the drive motor 22 stops working, the worm wheel 24 and the components connected to it can stably maintain their current position. This characteristic not only prevents the alarm device body 5 from rising and falling arbitrarily due to accidents, ensuring its stability during operation, but also ensures that the alarm sensor is always in the best detection position, improving detection accuracy.

[0049] Furthermore, the design of the first contact terminal 41 and the second contact terminal 42 avoids the need for lengthy power lines and network transmission lines to accommodate the lifting and lowering of the device, thereby reducing the initial installation cost.

[0050] Second Embodiment

[0051] Please refer to the following: Figure 5 Based on the emergency safety alarm device provided in the first embodiment of this application, the second embodiment of this application proposes another emergency safety alarm device. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0052] Specifically, the second embodiment of this application provides an emergency safety alarm device that differs in that the support frame 4 has a mounting plate 6 fixedly installed on its top, and a push switch 61 fixedly installed on the bottom of the mounting plate 6.

[0053] The bottom of the push switch 61 abuts against the top of the counterweight 32.

[0054] The working principle of the emergency safety alarm device provided by this utility model is as follows:

[0055] When in use, when the limit frame 31 moves to the inner side of the support frame 2, the top of the counterweight 32 will abut against the bottom of the push switch 61, at which time the drive motor 22 will automatically shut off.

[0056] Compared with related technologies, the emergency safety alarm device provided by this utility model has the following advantages:

[0057] Beneficial effects:

[0058] The mounting plate 6 and the push switch 61 work together to automatically shut off the drive motor 22 when in use, as the bottom of the push switch 61 abuts against the top of the counterweight 32, making it convenient for the user to use.

[0059] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An emergency safety alarm device, characterized in that, include: Mounting plate; A support frame is fixedly installed on the bottom of the mounting plate. A fixed frame is fixedly installed on one side of the support frame. A drive motor is fixedly installed on one side of the fixed frame. A worm gear is fixedly installed at the output end of the drive motor. A worm wheel meshes with the top of the worm gear. A rotating shaft is fixedly installed inside the worm wheel. Two winding wheels are fixedly installed on the outer side of the rotating shaft. Pull ropes are wound around the outer sides of both winding wheels. A fixing plate is provided at the bottom of the support frame, and the bottom of the pull rope is fixedly installed on the top of the fixing plate; A support frame is fixedly installed on the bottom of the mounting plate. A first contact terminal is fixedly installed on the bottom of the support frame. A second contact terminal is provided at the bottom of the first contact terminal. The bottom of the second contact terminal is fixedly installed on the top of the mounting plate. The safety alarm device body is fixedly installed on the bottom of the fixing plate.

2. The emergency safety alarm device according to claim 1, characterized in that, The mounting plate has multiple mounting holes at its edge.

3. The emergency safety alarm device according to claim 1, characterized in that, One end of the rotating shaft is rotatably connected to one side of the inner side of the support frame, and both of the winding wheels are located on the inner side of the support frame.

4. An emergency safety alarm device according to claim 1, characterized in that, A limit frame is fixedly installed on the top of the fixed plate, and counterweights are fixedly installed at both ends of the top of the fixed plate.

5. An emergency safety alarm device according to claim 4, characterized in that, The outer side of the limiting frame is attached to the inner side of the support frame.

6. An emergency safety alarm device according to claim 5, characterized in that, A mounting plate is fixedly installed on the top of the support frame, and a push switch is fixedly installed on the bottom of the mounting plate.

7. An emergency safety alarm device according to claim 6, characterized in that, The bottom of the push-button switch abuts against the top of the counterweight.

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