A civil air defense door limiting alarm device

Abstract

The utility model discloses a civil air defence door spacing alarm device relates to civil air defence door technical field, the utility model discloses, including door frame and civil air defence door body, the civil air defence door body is fixedly installed with trigger rod, and the top surface of trigger rod is equipped with spacing recess, the door frame is fixedly installed with contact alarm subassembly, and contact alarm subassembly is provided with electromagnetic spacing subassembly and controller, and when civil air defence door body opens, trigger rod triggers contact alarm subassembly. The utility model discloses, when civil air defence door body opens and reaches the maximum opening angle, the trigger rod of installing on civil air defence door body will be in contact with contact alarm subassembly, at this moment, contact alarm subassembly passes on the signal to controller, and controller controls electromagnetic spacing subassembly work and makes its movable part stretch to the spacing recess of the top surface of trigger rod and set up, thereby to the opening degree of civil air defence door body is positioned, prevents its excessive opening and the collision of wall body.

Description

Technical Field

[0001] This utility model relates to the field of civil defense door technology, specifically to a civil defense door limit alarm device. Background Technology

[0002] Civil defense doors play an important protective role in various buildings, and the stability of their opening and closing states is directly related to personnel safety and facility protection.

[0003] In the existing technology, the air defense door lacks effective limiting and early warning measures during the opening process. This makes it easy for the door to collide with the wall when subjected to external forces, such as accidental collision by personnel or airflow impact, which will cause damage to the door and the wall.

[0004] Therefore, a limit alarm device for air defense doors is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a limit alarm device for civil defense doors in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0007] A limit alarm device for a civil defense door includes a door frame and a civil defense door body. A trigger rod is fixedly installed on the civil defense door body, and a limit groove is formed on the top surface of the trigger rod. A contact alarm component is fixedly installed on the door frame, and an electromagnetic limit component and a controller are provided on the contact alarm component. When the civil defense door body is opened, the trigger rod triggers the contact alarm component, and the controller controls the movable part of the electromagnetic limit component to extend into the limit groove to limit the civil defense door body.

[0008] Furthermore, the contact alarm component includes an L-shaped mounting plate fixedly installed on the door frame, and the surface of the L-shaped mounting plate has a mounting groove, in which a contact switch is fixedly installed. A storage battery is fixedly installed on the surface of the L-shaped mounting plate, and an alarm is fixedly installed on the casing of the storage battery.

[0009] Furthermore, when the air defense door is opened to its maximum extent, the end of its trigger rod contacts the contact switch, generating a signal that controls the electromagnetic limit component to execute the action via the controller and triggers an alarm.

[0010] Furthermore, the electromagnetic limiting assembly includes a mounting bracket fixedly mounted on an L-shaped mounting plate. A ring-shaped electromagnet is embedded in the top surface of the mounting bracket, and a limiting rod is movably inserted into the mounting bracket and the ring-shaped electromagnet, which is the movable part. An armature is fixedly mounted on the top end of the limiting rod, and a return spring is fixedly mounted on the top surface of the mounting bracket and the bottom surface of the armature.

[0011] Furthermore, the reset spring is sleeved on the limiting rod, and the reset spring is made of stainless steel.

[0012] Furthermore, when the air defense door is opened to its maximum extent, the limiting groove on the surface of the trigger rod is located directly below the limiting rod.

[0013] The beneficial effects of this utility model are as follows:

[0014] When the air-raid shelter door is opened and reaches its maximum opening angle, the trigger rod installed on the air-raid shelter door will come into contact with the contact alarm component. At this time, the contact alarm component will transmit a signal to the controller, and the controller will control the electromagnetic limit component to work so that its movable part extends into the limit groove opened on the top surface of the trigger rod, thereby limiting the opening degree of the air-raid shelter door and preventing it from being over-opened and colliding with the wall. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the utility model in its closed state;

[0016] Figure 2 This is a diagram showing the new utility model opened to its maximum extent;

[0017] Figure 3 This is a utility model Figure 2 Enlarged view of part A;

[0018] Figure 4 This is a schematic diagram of the contact alarm component of this utility model;

[0019] Figure 5 This is a schematic diagram of the trigger rod of this utility model;

[0020] Reference numerals in the attached diagram: 1. Door frame; 2. Air raid door body; 3. Trigger rod; 31. Limiting groove; 4. Contact alarm assembly; 401. L-shaped mounting plate; 402. Mounting slot; 403. Contact switch; 404. Battery; 405. Alarm; 5. Electromagnetic limit assembly; 501. Mounting bracket; 502. Ring electromagnet; 503. Return spring; 504. Armature; 505. Limiting rod; 6. Controller. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] like Figures 1 to 4 As shown, a limit alarm device for a civil defense door includes a door frame 1 and a civil defense door body 2. A trigger rod 3 is fixedly installed on the civil defense door body 2, and a limit groove 31 is formed on the top surface of the trigger rod 3. A contact alarm component 4 is fixedly installed on the door frame 1. Figure 1 , Figure 2 and Figure 4 As shown, specifically, the contact alarm component 4 includes an L-shaped mounting plate 401 fixedly installed on the door frame 1, and the surface of the L-shaped mounting plate 401 is provided with a mounting groove 402. A contact switch 403 is fixedly installed in the mounting groove 402. A storage battery 404 is fixedly installed on the surface of the L-shaped mounting plate 401, and an alarm 405 is fixedly installed on the housing of the storage battery 404.

[0026] More specifically, the battery 404 provides power to the entire device. When the trigger rod 3 contacts the contact switch 403, a complete circuit is formed to generate a trigger signal, which activates the alarm 405 and serves as a warning to the person opening it.

[0027] like Figure 2 and Figure 3 As shown, specifically, when the body of the air defense door 2 is opened to the maximum extent, the end of its trigger rod 3 contacts the contact switch 403, generating a signal that is controlled by the controller 6 to activate the electromagnetic limit component 5 and triggers an alarm via the alarm 405.

[0028] More specifically, when the air defense door body 2 is opened to its maximum extent, the end of the trigger rod 3 contacts the contact switch 403, generating a signal. This signal is processed by the controller 6, which on the one hand controls the electromagnetic limit component 5 to perform the limit operation, and on the other hand sends out an audible and visual alarm through the alarm 405 to remind personnel that the air defense door body 2 has been opened to the limit position, so as to avoid the continued action of external force that may cause damage to the door and wall.

[0029] The contact alarm assembly 4 is equipped with an electromagnetic limit assembly 5 and a controller 6. When the air defense door body 2 is opened, the trigger rod 3 triggers the contact alarm assembly 4, and the controller 6 controls the movable part of the electromagnetic limit assembly 5 to extend into the limit groove 31 to limit the air defense door body 2; Figure 3 As shown, specifically, the electromagnetic limiting assembly 5 includes a mounting bracket 501 fixedly mounted on an L-shaped mounting plate 401. An annular electromagnet 502 is embedded on the top surface of the mounting bracket 501, and a limiting rod 505, which is the movable part, is movably inserted into the mounting bracket 501 and the annular electromagnet 502. An armature 504 is fixedly mounted on the top end of the limiting rod 505, and a return spring 503 is fixedly mounted on the top surface of the mounting bracket 501 and the bottom surface of the armature 504.

[0030] More specifically, when the controller 6 sends a signal to energize the annular electromagnet 502 and generate a magnetic field, the armature 504 is attracted, which drives the limit rod 505 to move downward to compress the reset spring 503 and extend into the limit groove 31 to achieve the limit. When the annular electromagnet 502 is de-energized, the reset spring 503 pushes the armature 504 and the limit rod 505 to reset, and the annular electromagnet 502 can respond quickly.

[0031] In some practical applications, the return spring 503 is sleeved on the limit rod 505, and the return spring 503 is made of stainless steel.

[0032] More specifically, the stainless steel return spring 503 can prevent the return spring 503 from becoming magnetized after prolonged use.

[0033] In some practical applications, when the body of the air defense door 2 is opened to the maximum extent, the limiting groove 31 on the surface of the trigger rod 3 is located directly below the limiting rod 505.

[0034] More specifically, when the air defense door body 2 is opened to its maximum extent, the limiting rod 505 accurately extends into the limiting groove 31 under the action of electromagnetic force, forming a reliable limiting support for the air defense door body 2, preventing it from continuing to rotate and hitting the wall when subjected to external force, effectively protecting the integrity and safety of the door and the wall.

[0035] In summary: When the air defense door body 2 is opened and reaches its maximum opening angle, the trigger rod 3 installed on the air defense door body 2 will come into contact with the contact alarm component 4. At this time, the contact alarm component 4 will transmit a signal to the controller 6. The controller 6 will control the electromagnetic limit component 5 to work so that its movable part extends into the limit groove 31 opened on the top surface of the trigger rod 3, thereby limiting the opening degree of the air defense door body 2 and preventing it from being over-opened and colliding with the wall.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A limit alarm device for air-raid shelter doors, characterized in that, The device includes a door frame (1) and a civil defense door body (2). A trigger rod (3) is fixedly installed on the civil defense door body (2), and a limiting groove (31) is opened on the top surface of the trigger rod (3). A contact alarm component (4) is fixedly installed on the door frame (1), and an electromagnetic limiting component (5) and a controller (6) are provided on the contact alarm component (4). When the civil defense door body (2) is opened, the trigger rod (3) triggers the contact alarm component (4), and the controller (6) controls the movable part of the electromagnetic limiting component (5) to extend into the limiting groove (31) to limit the civil defense door body (2).

2. The limit alarm device for a civil defense door according to claim 1, characterized in that, The contact alarm assembly (4) includes an L-shaped mounting plate (401) fixedly installed on the door frame (1), and the surface of the L-shaped mounting plate (401) is provided with a mounting groove (402). A contact switch (403) is fixedly installed in the mounting groove (402). A storage battery (404) is fixedly installed on the surface of the L-shaped mounting plate (401), and an alarm (405) is fixedly installed on the casing of the storage battery (404).

3. The limit alarm device for a civil defense door according to claim 1, characterized in that, When the body of the air defense door (2) is opened to the maximum extent, the end of its trigger rod (3) comes into contact with the contact switch (403), generating a signal that controls the electromagnetic limit component (5) to be executed by the controller (6) and alarms are triggered by the alarm (405).

4. The limit alarm device for a civil defense door according to claim 1, characterized in that, The electromagnetic limiting assembly (5) includes a mounting bracket (501) fixedly mounted on an L-shaped mounting plate (401). A ring electromagnet (502) is embedded on the top surface of the mounting bracket (501), and a limiting rod (505) is movably inserted into the mounting bracket (501) and the ring electromagnet (502), which is the movable part. An armature (504) is fixedly mounted on the top of the limiting rod (505), and a return spring (503) is fixedly mounted on the top surface of the mounting bracket (501) and the bottom surface of the armature (504).

5. The limit alarm device for a civil defense door according to claim 4, characterized in that, The reset spring (503) is sleeved on the limit rod (505), and the reset spring (503) is made of stainless steel.

6. The limit alarm device for a civil defense door according to claim 4, characterized in that, When the body of the air defense door (2) is opened to the maximum extent, and the limiting groove (31) on the surface of the trigger rod (3) is located directly below the limiting rod (505).

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