A security door with high security

Through multi-point linkage design and intelligent monitoring, the security deficiencies of existing security doors in terms of violent prying and technical unlocking are solved, achieving efficient dual protection and real-time monitoring, and improving the overall security of security doors.

CN224413474UActive Publication Date: 2026-06-26BIJIE MANTANGHONG DOOR IND CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
BIJIE MANTANGHONG DOOR IND CO LTD
Filing Date
2025-06-12
Publication Date
2026-06-26

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Abstract

The utility model relates to security door technical field discloses a security door with high safety, including door frame, the outside fixed connection of door frame has a plurality of hinges, the outside fixed connection of hinge has the door leaf, the outside fixed connection of door leaf has intelligent door lock, the outside fixed connection of intelligent door lock has camera, the inside fixed connection of door leaf has security protection mechanism, the inside fixed connection of door frame has double lock core mechanism, the security protection mechanism includes support plate, the outside fixed connection of support plate is in the inside of door leaf, the outside sliding connection of support plate has a plurality of latch lever, in the utility model, through telescopic link drive tension spring movement, make tension spring drive latch lever movement, in turn make straight lock tongue slide in lock tongue hole, to realize dynamic locking, spring buffer can weaken external force impact, cooperate with the effect of lock tongue and hole position, can effectively resist violent destruction such as pry and smash.
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Description

Technical Field

[0001] This utility model relates to the field of security door technology, and in particular to a high-security security door. Background Technology

[0002] In homes, it can be installed on the entrance door, especially suitable for high-rise residential buildings, single-person households, and residents who need to store valuables. It protects security with its anti-pry structure and smart lock function. In commercial scenarios, it is often used in shops and warehouses, relying on high-strength materials and multi-locking design to resist violent intrusion. Some also support remote monitoring and alarm.

[0003] Existing technologies include some security doors that incorporate fireproof and soundproof designs, and smart locks equipped with lock cylinders, fingerprint recognition, and decoy passwords. They support remote monitoring and abnormal alarms, and incorporate technologies such as anti-peeping lock technology. For mechanical protection, there are multiple locking points, anti-pry buckles, and anti-saw steel bars, combined with a precision door gap design. They also have user-friendly features such as hidden observation windows and smart doorbells, balancing security and user experience.

[0004] However, in actual use, it cannot provide security protection, is easily deformed by violent prying, has outdated lock configuration, is easily cracked by technical unlocking, lacks anti-pry buckles and other structural reinforcements, resulting in poor overall impact resistance; it also lacks intelligent protection functions, cannot respond to abnormal situations in time, and is difficult to ensure the safety of home or place. In response to the above problems, a high-security anti-theft door is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a high-security anti-theft door, aiming to improve the problem that some existing anti-theft doors cannot achieve security protection.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A high-security anti-theft door includes a door frame, a plurality of hinges fixedly connected to the outside of the door frame, a door leaf fixedly connected to the outside of the hinges, a smart door lock fixedly connected to the outside of the door leaf, a camera fixedly connected to the outside of the smart door lock, a security protection mechanism fixedly connected to the inside of the door leaf, and a double lock cylinder mechanism fixedly connected to the inside of the door frame.

[0008] The safety protection mechanism includes a support plate, which is fixedly connected to the outside of the door leaf. Multiple latches are slidably connected to the outside of the support plate. A first limiting plate is fixedly connected to the left side of the latch, and a second limiting plate is fixedly connected to the right side of the latch. A straight locking tongue is fixedly connected to the outside of the second limiting plate. Multiple locking tongue holes are opened inside the door frame. Multiple transmission components are fixedly connected to the outside of the latch.

[0009] As a further description of the above technical solution:

[0010] The transmission assembly includes a telescopic rod, which is fixedly connected to the outside of the latch rod, and a tension spring is sleeved on the outside of the latch rod.

[0011] As a further description of the above technical solution:

[0012] The double lock cylinder mechanism includes a fixing plate, which is externally fixedly connected to the outside of the door leaf, and has multiple secondary lock tongues slidably connected internally.

[0013] As a further description of the above technical solution:

[0014] The auxiliary locking tongue is fixedly connected to a follower rod, and a return spring is sleeved on the outside of the follower rod;

[0015] As a further description of the above technical solution:

[0016] A cylinder is fixedly connected inside the door frame, and a connecting rod is fixedly connected to the driving end of the cylinder;

[0017] As a further description of the above technical solution:

[0018] The connecting rod is externally fixedly connected to a follower plate, and the follower plate is externally fixedly connected to multiple limiting rods.

[0019] As a further description of the above technical solution:

[0020] The limiting rod is externally slidably connected to the inside of the secondary lock tongue, and the secondary lock tongue is externally slidably connected to the inside of the door leaf;

[0021] As a further description of the above technical solution:

[0022] One end of the return spring is fixedly connected to the outside of the secondary lock tongue, and the other end of the return spring is fixedly connected to the inside of the door leaf.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, the telescopic rod drives the tension spring to move, which in turn drives the latch rod to move, causing the second limiting plate to move the straight locking tongue. This allows the straight locking tongue to slide within the locking tongue hole, thereby achieving dynamic locking. The spring buffer can weaken the impact of external forces. Combined with the action of the locking tongue and the hole, it can effectively resist violent damage such as prying and smashing. The structure has strong linkage and high stability, providing a reliable protective barrier for the home.

[0025] 2. In this utility model, the connecting rod is driven by a cylinder to move, which in turn drives the follower plate to move, which in turn drives the limit rod to move. This causes the limit rod to slide inside the secondary lock tongue, thereby enabling the main and secondary lock cylinders to operate independently. The main lock cylinder is responsible for daily opening and closing, while the secondary lock cylinder provides an additional locking point, forming double protection. This linkage enhances the interlocking force between the door frame and the door panel, improving performance in all aspects. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of a high-security anti-theft door proposed in this utility model;

[0027] Figure 2 This is a schematic diagram of the door leaf of a high-security anti-theft door proposed in this utility model;

[0028] Figure 3 This is a schematic diagram of the structure of a fixing plate for a high-security anti-theft door proposed in this utility model;

[0029] Figure 4 This is a schematic diagram of the straight locking tongue of a high-security anti-theft door proposed in this utility model;

[0030] Figure 5 for Figure 2 Enlarged view of point A in the middle;

[0031] Figure 6 for Figure 4 Enlarged view of point B in the middle.

[0032] Legend:

[0033] 1. Door frame; 2. Hinge; 3. Door leaf; 4. Smart door lock; 5. Camera; 6. Support plate; 7. Latch bar; 8. Limiting plate one; 9. Limiting plate two; 10. Straight bolt; 11. Bolt hole; 12. Telescopic rod; 13. Tension spring; 14. Fixing plate; 15. Secondary bolt; 16. Follower rod; 17. Return spring; 18. Cylinder; 19. Connecting rod; 20. Follower plate; 21. Limiting rod. Detailed Implementation

[0034] 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.

[0035] Reference Figure 1 , Figure 2 , Figure 5This utility model provides an embodiment of a high-security anti-theft door, including a door frame 1. The door frame 1 is rectangular and ring-shaped, integrally formed, and rust-proofed, making it sturdy and durable. Multiple hinges 2 are fixedly connected to the outside of the door frame 1. The hinges 2 have a butterfly-shaped structure and are tightly fixed to the door frame 1 by bolts. Their pivot parts are precision-machined to ensure smooth opening and closing of the door leaf 3. The door leaf 3 is fixedly connected to the outside of the hinges 2. The door leaf 3 has a square shape and adopts a honeycomb-shaped reinforcing rib design inside to further improve its impact resistance. A smart door lock 4 is fixedly connected to the outside of the door leaf 3. The smart door lock 4 has a streamlined appearance and has multiple functions such as fingerprint recognition, password input, card unlocking, and remote control via mobile phone. A camera 5 is fixedly connected to the outside of the smart door lock 4. The camera 5 is cylindrical and has wide-angle shooting and infrared night vision functions. It can monitor the dynamics outside the door in real time and transmit the image to the indoor terminal device. A security protection mechanism is fixedly connected inside the door leaf 3, and a double lock cylinder mechanism is fixedly connected inside the door frame 1.

[0036] The safety protection mechanism includes a support plate 6, which is rectangular and longitudinally fixed inside the door leaf 3 to provide stable support for other components. The support plate 6 is externally fixedly connected to the inside of the door leaf 3. Multiple latches 7 are slidably connected to the outside of the support plate 6. The latches 7 are cylindrical metal rods that can slide flexibly up and down within the sliding grooves. A limiting plate 1 8 is fixedly connected to the outer left side of the latches 7. The limiting plate 1 8 is a rectangular metal plate with a size larger than the diameter of the latches 7, used to limit the extreme positions of the latches 7's sliding. A limiting plate 2 9 is fixedly connected to the outer right side of the latches 7. A straight latch 10 is externally fixedly connected. Multiple latch holes 11 are opened inside the door frame 1. The limiting plate 2 9 faces the side of the door frame 1 and is vertically fixedly connected to the straight latch 10. The straight latch 10 is a rectangular metal block with a wedge-shaped end, which facilitates smooth insertion into the latch hole 11. Multiple transmission components are externally fixedly connected to the latch bar 7. The transmission components include a telescopic rod 12. The telescopic rod 12 is externally fixedly connected to the outside of the latch bar 7. A tension spring 13 is sleeved on the outside of the latch bar 7. When the door leaf 3 is closed, the telescopic rod 12 retracts, causing the latch bar 7 to slide to the right, so that the straight latch 10 is inserted into the latch hole 11. At the same time, the tension spring 13 is compressed and stores elastic potential energy.

[0037] Reference Figure 3 , Figure 4 , Figure 6The double lock cylinder mechanism includes a fixed plate 14, which is rectangular and longitudinally fixed to the outer surface of the door leaf 3. Its four corners are tightly connected to the door leaf 3 by high-strength bolts. The fixed plate 14 is externally fixed to the outside of the door leaf 3. Multiple secondary lock tongues 15 are slidably connected inside the fixed plate 14. The secondary lock tongues 15 are cuboid structures, which facilitate quick insertion into the lock holes reserved in the door frame 1. The secondary lock tongues 15 are externally fixed to a follower rod 16. A return spring 17 is sleeved on the outside of the follower rod 16. The follower rod 16 is a slender cylindrical metal rod with an outer diameter slightly smaller than the width of the secondary lock tongues 15 to ensure flexible movement. A return spring 17 is sleeved on the outside of the follower rod 16. This spring is a helical compression spring and is slightly longer than the follower rod 16 in its natural state.

[0038] A cylinder 18 is fixedly connected inside the door frame 1. The cylinder 18 is cylindrical and is fixed to the side wall of the door frame 1 through an embedded mounting slot. A connecting rod 19 is fixedly connected to the driving end of the cylinder 18. The horizontal part of the connecting rod 19 is connected to the driving end of the cylinder 18, and the vertical part is connected to the follower plate 20. The follower plate 20 is fixedly connected to the outside of the connecting rod 19. Multiple limiting rods 21 are fixedly connected to the outside of the follower plate 20. The limiting rods 21 are cylindrical, and their number corresponds to that of the secondary lock tongue 15. They pass precisely through the limiting holes pre-opened on the secondary lock tongue 15, so that the secondary lock tongue 15 and the follower plate 20 form a linkage relationship. The external part of the limiting rod 21 is slidably connected to the inside of the secondary lock tongue 15. The external part of the secondary lock tongue 15 is slidably connected to the inside of the door leaf 3. One end of the return spring 17 is fixedly connected to the outside of the secondary lock tongue 15, and the other end of the return spring 17 is fixedly connected to the inside of the door leaf 3.

[0039] Working principle: The support plate 6 is longitudinally fixed inside the door leaf 3 to provide support for the entire mechanism, allowing the latch 7 to slide flexibly up and down in the sliding groove outside the support plate 6. The left side of the latch 7 is connected to a rectangular limiting plate 8 with a diameter larger than its own to limit the sliding limit. The right side of the limiting plate 9 has a rectangular wedge-shaped straight locking tongue 10 vertically fixed on it, corresponding to the locking tongue hole 11 of the door frame 1, so that one end of the telescopic rod 12 is connected to the latch 7, and one end of the externally sleeved tension spring 13 is connected to the limiting plate 8. When the door is closed, the telescopic rod 12 retracts and drives the latch 7 to slide to the right, the straight locking tongue 10 is inserted into the locking tongue hole 11, and at the same time the tension spring 13 is compressed to store energy.

[0040] The cylinder 18 drives the connecting rod 19 to move, causing the connecting rod 19 to move the follower plate 20 to translate, so that the limiting rod 21 slides inside the secondary lock tongue 15 and limits the secondary lock tongue 15. The limiting rod 21 pushes the secondary lock tongue 15 to overcome the elastic force of the return spring 17. When the door is opened, the smart door lock 4 is triggered to unlock, the telescopic rod 12 extends, the tension spring 13 releases elastic potential energy to push the latch rod 7 to the left, and the straight lock tongue 10 exits from the lock tongue hole 11. At the same time, the cylinder 18 drives in the opposite direction, and the return spring 17 makes the secondary lock tongue 15 return to the initial position, and the door leaf 3 can be opened and closed freely. During this period, the camera 5 continuously monitors the dynamics outside the door.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-security anti-theft door, comprising a door frame (1), characterized in that: The door frame (1) is fixedly connected to the outside of multiple hinges (2), the hinges (2) are fixedly connected to the outside of a door leaf (3), the door leaf (3) is fixedly connected to the outside of a smart door lock (4), the smart door lock (4) is fixedly connected to the outside of a camera (5), the door leaf (3) is fixedly connected to the inside of a security protection mechanism, and the door frame (1) is fixedly connected to the inside of a double lock cylinder mechanism. The safety protection mechanism includes a support plate (6), which is fixedly connected to the outside of the door leaf (3) and has multiple latches (7) slidably connected to the outside of the support plate (6). A limiting plate (8) is fixedly connected to the left side of the latches (7) and a limiting plate (9) is fixedly connected to the right side of the latches (7). A straight locking tongue (10) is fixedly connected to the outside of the limiting plate (9). Multiple locking tongue holes (11) are opened inside the door frame (1), and multiple transmission components are fixedly connected to the outside of the latches (7).

2. The high-security anti-theft door according to claim 1, characterized in that: The transmission assembly includes a telescopic rod (12), which is fixedly connected to the outside of the latch (7), and a tension spring (13) is sleeved on the outside of the latch (7).

3. A high-security anti-theft door according to claim 2, characterized in that: The double lock cylinder mechanism includes a fixing plate (14), which is fixedly connected to the outside of the door leaf (3), and multiple secondary lock tongues (15) are slidably connected inside the fixing plate (14).

4. A high-security anti-theft door according to claim 3, characterized in that: The external of the secondary locking tongue (15) is fixedly connected to a follower rod (16), and a return spring (17) is sleeved on the external of the follower rod (16).

5. A high-security anti-theft door according to claim 4, characterized in that: A cylinder (18) is fixedly connected inside the door frame (1), and a connecting rod (19) is fixedly connected to the drive end of the cylinder (18).

6. A high-security anti-theft door according to claim 5, characterized in that: The connecting rod (19) is externally fixedly connected to a follower plate (20), and the follower plate (20) is externally fixedly connected to a plurality of limit rods (21).

7. A high-security anti-theft door according to claim 6, characterized in that: The limiting rod (21) is externally slidably connected to the inside of the secondary lock tongue (15), and the secondary lock tongue (15) is externally slidably connected to the inside of the door leaf (3).

8. A high-security anti-theft door according to claim 4, characterized in that: One end of the return spring (17) is fixedly connected to the outside of the secondary latch (15), and the other end of the return spring (17) is fixedly connected to the inside of the door leaf (3).