Security alarm door

Abstract

The utility model relates to the technical field of security doors, and discloses a security alarm door which comprises a door frame and a door body installed in the door frame in a hinged mode, the rear end of the top of the door frame and the rear end of the top of the door body are provided with a protection box and a magnetic attraction limiting component respectively, and an alarm switch body and a magnet component are arranged in the protection box in a sleeved mode. A sliding rail fixed to the inner wall of the front end of the protection box is clamped to the surface of the front end of the magnet component, an iron transition rod penetrating through the top structure of the door frame is fixed to the top of the magnet component, and the top of the iron transition rod is connected with the magnetic attraction face of the magnetic attraction limiting component in a magnetic attraction mode. According to the utility model, the magnetic attraction limiting part, the iron transition rod and the protection box form a magnetic attraction linkage device, and the magnetic attraction linkage device is combined with the magnet part, the alarm switch body, the door frame and the door body for use subsequently; the premise that the magnet component is separated from the alarm switch body to enable the alarm switch body to start alarming is the premise that the door body is opened illegally, and potential safety hazards are eliminated.

Description

Technical Field

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

[0002] Security doors, also known as safety doors, are different from regular security doors. They typically use cylindrical lock cylinders that are stronger than Class C lock cylinders. These cylinders offer longer resistance to technical unlocking than Class C locks. In addition, they often feature designs such as automatic deadbolts upon closing and two-way anti-pry hooks. Furthermore, in recent years, with increased public awareness of security and the need for security in special environments, some auxiliary alarm devices have been developed for security doors. For example, a magnetic door alarm consists of a switch and a magnet. The switch is a reed switch connected by a lead wire and encapsulated. The magnet is a magnet of corresponding magnetic field strength encapsulated in a plastic or alloy housing. When the two parts separate or approach each other to a certain distance, the switch opens and closes, sensing changes in the object's position and generating an alarm.

[0003] However, in current security door and door magnetic alarm combinations, the switch and magnet are usually fixed separately to the door frame and door body. While this meets basic usage requirements, it has significant vulnerabilities. For example, an unauthorized intruder can easily create the illusion that the door magnetic alarm is malfunctioning and frequently alarming by quickly and repeatedly opening and closing the door, leading the user to directly disable the door magnetic alarm to eliminate the frequent alarms. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a security alarm door that solves the problems mentioned in the background section.

[0005] This utility model provides the following technical solution: a security alarm door, including a door frame and a door body hinged inside the door frame. A protective box and a magnetic limiting component are respectively installed at the top rear end of the door frame and the top rear end of the door body. An alarm switch body and a magnetic component are installed inside the protective box. A slide rail fixed to the front inner wall of the protective box is snapped onto the front surface of the magnetic component. An iron transition rod penetrating the top structure of the door frame is fixed to the top of the magnetic component, and the top of the iron transition rod is magnetically connected to the magnetic surface of the magnetic limiting component.

[0006] The rear end structure of the protective box has an inner mounting groove that communicates with its own space. The mounting groove is fitted with a non-metallic cover plate, and the inside of the non-metallic cover plate has a strip groove aligned with the magnetic component. The rear end surface of the magnetic component is fixed with a linkage sleeve rod fitted inside the strip groove. The outer side of the protective box is provided with a reset rod that can engage with the linkage sleeve rod.

[0007] Preferably, the magnetic limiting component consists of a support frame and a magnet fitted inside the rear structure of the support frame. The front structure of the support frame is fixed to the rear surface of the top of the door frame. The bottom surface of the magnet is coplanar with the bottom surface of the rear end of the support frame, and the magnet can magnetically connect to the top end face of the iron transition rod.

[0008] Preferably, a buffer spring is installed between the bottom surface of the magnet component and the inner wall of the bottom of the protective box, and a mounting base is installed between the front surface of the alarm switch body and the inner wall of the front of the protective box. The buffer spring is in a stretched state after the magnet component and the alarm switch body are aligned. After the alarm switch body and the magnet component are disaligned, the alarm switch body will sound an alarm.

[0009] Preferably, the linkage sleeve has an internal hexagonal groove, and the reset rod includes a hexagonal rod and a handle. One end of the hexagonal rod can engage with the internal hexagonal groove in the linkage sleeve, and the other end of the hexagonal rod is fixed to the middle of the handle.

[0010] Preferably, the inner wall of the rear end of the mounting groove is provided with a threaded hole, and the interior of the non-metallic cover plate is provided with a countersunk hole aligned with the threaded hole. The non-metallic cover plate and the rear end structure of the protective box can be detachably installed by means of screws and countersunk hole fittings and then screw locking with the threaded hole.

[0011] Preferably, the non-metallic cover plate has a ventilation slot inside that is aligned with the alarm switch body, and the number of ventilation slots is not less than two.

[0012] Preferably, a reinforcing rod is fixed inside the protective box, and the rear end of the reinforcing rod is fitted and connected to the front surface of the non-metallic cover plate fitted in the mounting groove.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. This utility model consists of a magnetic attraction limiting component, an iron transition rod, and a protective box to form a magnetic attraction linkage device. After being used in combination with a magnetic component, an alarm switch body, a door frame, and a door, the premise that the alarm switch body will activate when the magnetic component detaches from the alarm component is based on the premise that the door is illegally opened. This solves the problem of illegal intruders quickly and repeatedly opening and closing the door, creating the illusion that the door magnetic alarm is frequently alarming due to a malfunction, thus eliminating safety hazards.

[0015] 2. This utility model uses a reset rod and a linkage sleeve as specific structures for resetting the alarm switch body and magnetic components. When used in combination with the alarm switch body and magnetic components, it can prevent unauthorized intruders from resetting the alarm switch body and magnetic components themselves, thereby further improving the overall security of the device. Attached Figure Description

[0016] Figure 1 This is a rear view schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a front view schematic diagram of the structure of this utility model;

[0018] Figure 3 This is a right-side view of the structure of this utility model;

[0019] Figure 4 This is a front view schematic diagram of the switch body of the alarm device of this utility model;

[0020] Figure 5 The structure of this utility model Figure 4 Enlarged view of point A in the middle;

[0021] Figure 6 This is a three-dimensional schematic diagram of the structural door of this utility model.

[0022] In the diagram: 1. Door frame; 2. Door body; 3. Protective box; 4. Magnetic limit component; 5. Alarm switch body; 6. Magnet component; 7. Buffer spring; 8. Slide rail; 9. Iron transition rod; 10. Non-metallic cover plate; 11. Strip groove; 12. Mounting base; 13. Reset rod; 14. Linkage sleeve rod; 15. Ventilation slot; 16. Reinforcing rod. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-5 A security alarm door includes a door frame 1 and a door body 2 hinged inside the door frame 1. A protective box 3 and a magnetic limiting component 4 are respectively installed at the top rear end of the door frame 1 and the top rear end of the door body 2. An alarm switch body 5 and a magnetic component 6 are installed inside the protective box 3. A slide rail 8 fixed to the front inner wall of the protective box 3 is snapped onto the front surface of the magnetic component 6. An iron transition rod 9 that penetrates the top structure of the door frame 1 is fixed to the top of the magnetic component 6, and the top of the iron transition rod 9 is magnetically connected to the magnetic surface of the magnetic limiting component 4.

[0025] The magnetic limiting component 4 consists of a support frame and a magnet installed inside the rear structure of the support frame. The front structure of the support frame is fixed to the rear surface of the top of the door frame 1. The bottom surface of the magnet is coplanar with the bottom surface of the rear end of the support frame, and the magnet can magnetically connect to the top end face of the iron transition rod 9.

[0026] The rear end structure of the protective box 3 has an installation groove that communicates with its own space. The installation groove is fitted with a non-metallic cover plate 10, and the non-metallic cover plate 10 has a strip groove 11 that is aligned with the magnet component 6. The rear end surface of the magnet component 6 is fixed with a linkage sleeve rod 14 that is fitted inside the strip groove 11. The outer side of the protective box 3 is provided with a reset rod 13 that can engage with the linkage sleeve rod 14.

[0027] The linkage sleeve 14 has an internal hexagonal groove. The reset rod 13 includes a hexagonal rod and a handle. One end of the hexagonal rod can be engaged with the internal hexagonal groove in the linkage sleeve 14, and the other end of the hexagonal rod is fixed to the middle of the handle.

[0028] When in use, when an unauthorized user opens the door 2 without permission, the iron transition rod 9 separates from the magnetic limit component 4, thereby releasing the magnetic connection between the iron transition rod 9 and the magnetic limit component 4. The unsupported magnetic component 6 will automatically move down under its own gravity and be guided by the slide rail 8 it is attached to, thereby separating from the alarm switch body 5, so that the alarm switch body 5 is in the open state and alarms are triggered.

[0029] To reset the magnet component 6 and the alarm switch body 5 to resolve the alarm state, the magnet component 6 must be manually lifted to a position aligned with the alarm switch body 5 by using a specific reset rod 13 and a linkage rod 14 to close the alarm switch body 5. Otherwise, the alarm switch body 5 will remain in the on alarm state. Furthermore, the separation of the magnet component 6 from the alarm switch body 5 is contingent upon the door 2 flipping inside the door frame 1. Therefore, the cause of frequent alarms caused by the magnet component 6 and the alarm switch body 5 due to their own malfunctions can be ruled out, thus eliminating the safety loophole.

[0030] Please see Figure 4 A buffer spring 7 is installed between the bottom surface of the magnet component 6 and the inner wall of the bottom of the protective box 3. A mounting base 12 is installed between the front surface of the alarm switch body 5 and the inner wall of the front of the protective box 3. The buffer spring 7 is in a stretched state after the magnet component 6 and the alarm switch body 5 are aligned. After the alarm switch body 5 and the magnet component 6 are disaligned, the alarm switch body 5 will sound an alarm.

[0031] In use, considering that the magnetic component 6 slides down slowly due to its own gravity, a buffer spring 7 is set up to first align the magnetic component 6 with the alarm switch body 5 in sync, and is in a stretched state. Subsequently, when the iron transition rod 9 separates from the magnetic attraction limit component 4, the magnetic attraction connection between the iron transition rod 9 and the magnetic attraction limit component 4 is released, and the restoring force of the buffer spring 7 will pull the magnetic component 6 to move down quickly.

[0032] Please see Figure 4 , Figure 6 The inner wall of the rear end of the mounting slot is provided with a threaded hole. The non-metallic cover plate 10 is provided with a countersunk hole aligned with the threaded hole. The non-metallic cover plate 10 and the rear end structure of the protective box 3 can be detached and installed by means of screws and countersunk holes fitting together and then screwed into the threaded hole. The non-metallic cover plate 10 is provided with a ventilation slot 15 aligned with the alarm switch body 5. The number of ventilation slots 15 is not less than two. A reinforcing rod 16 is fixed inside the protective box 3. The rear end of the reinforcing rod 16 is fitted and connected to the front end surface of the non-metallic cover plate 10 fitted in the mounting slot.

[0033] When in use, for maintenance of the internal components of the protective box 3, the screws between the non-metallic cover plate 10 and the protective box 3 can be removed. Then, removing the non-metallic cover plate 10 will provide a large space for maintenance. The structural strength of the protective box 3 and the non-metallic cover plate 10 after assembly can be further strengthened by the reinforcing rod 16.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Additionally, in the accompanying drawings of this utility model, the fill patterns are merely for distinguishing layers and do not constitute any other limitation.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A security alarm door, comprising a door frame (1) and a door body (2) hinged inside the door frame (1), characterized in that: The top rear end of the door frame (1) and the top rear end of the door body (2) are respectively equipped with a protective box (3) and a magnetic limit component (4). The inside of the protective box (3) is fitted with an alarm switch body (5) and a magnetic component (6). The front surface of the magnetic component (6) is snapped with a slide rail (8) fixed on the inner wall of the front end of the protective box (3). The top of the magnetic component (6) is fixed with an iron transition rod (9) that penetrates the top structure of the door frame (1), and the top of the iron transition rod (9) is magnetically connected to the magnetic surface of the magnetic limit component (4). The protective box (3) has an installation groove that communicates with its own space on the inner side of its rear structure. The installation groove is fitted with a non-metallic cover plate (10), and the non-metallic cover plate (10) has a strip groove (11) that is aligned with the magnet component (6) inside. The rear surface of the magnet component (6) is fixed with a linkage sleeve rod (14) fitted inside the strip groove (11). The outer side of the protective box (3) is provided with a reset rod (13) that can engage with the linkage sleeve rod (14).

2. A security alarm door according to claim 1, characterized in that: The magnetic limiting component (4) consists of a support frame and a magnet installed inside the rear end structure of the support frame. The front end structure of the support frame is fixed on the rear end surface of the top of the door frame (1). The bottom surface of the magnet is coplanar with the bottom surface of the rear end of the support frame, and the magnet can magnetically connect to the top end face of the iron transition rod (9).

3. A security alarm door according to claim 1, characterized in that: A buffer spring (7) is installed between the bottom surface of the magnet component (6) and the inner wall of the bottom of the protective box (3). A mounting base (12) is installed between the front surface of the alarm switch body (5) and the inner wall of the front of the protective box (3). The buffer spring (7) is in a stretched state after the magnet component (6) and the alarm switch body (5) are aligned. After the alarm switch body (5) and the magnet component (6) are disaligned, the alarm switch body (5) will sound an alarm.

4. A security alarm door according to claim 1, characterized in that: The linkage sleeve (14) has an internal hexagonal groove. The reset rod (13) includes a hexagonal rod and a handle. One end of the hexagonal rod can be engaged with the internal hexagonal groove in the linkage sleeve (14), and the other end of the hexagonal rod is fixed to the middle of the handle.

5. A security alarm door according to claim 1, characterized in that: The inner wall of the rear end of the mounting groove is provided with a threaded hole, and the interior of the non-metallic cover plate (10) is provided with a countersunk hole aligned with the threaded hole. The non-metallic cover plate (10) and the rear end structure of the protective box (3) can be detachably installed by means of screws and countersunk hole fitting and screw locking with threaded hole.

6. A security alarm door according to claim 1, characterized in that: The non-metallic cover plate (10) has a ventilation slot (15) inside that is aligned with the alarm switch body (5), and the number of ventilation slots (15) is not less than two.

7. A security alarm door according to claim 1, characterized in that: The protective box (3) is fixed with a reinforcing rod (16) inside, and the rear end of the reinforcing rod (16) is fitted and connected to the front surface of the non-metallic cover plate (10) that is fitted in the mounting groove.

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