Anti-trailing linkage interlocking safety door

By installing a movable mirror and push-pull rod assembly on the observation window, the problem of limited viewing angle of the anti-tailgating interlocking safety door is solved, enabling comprehensive observation of the blind spots below and on both sides of the door, thus improving safety.

CN224282414UActive Publication Date: 2026-05-26SHANGHAI JINSUI STAINLESS STEEL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI JINSUI STAINLESS STEEL CO LTD
Filing Date
2025-05-26
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing anti-tailgating interlocking security doors have limited viewing angles when viewed through peepholes or video intercom systems, making it difficult to cover blind spots below and to the sides of the door, thus creating safety hazards.

Method used

A movable mirror, extension rod, and push-pull rod assembly are installed on the observation window. By pulling the handle, the push-pull rod is moved to extend the mirror and adjust its position, thereby expanding the field of view to cover blind spots.

Benefits of technology

It effectively expands the observation range, avoids safety hazards caused by blind spots, and improves security reliability.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides an anti-trailing linkage interlocking safety door, which relates to the technical field of safety doors and comprises a compartment body, opening and closing doors are mounted at the front end and the rear end of the interior of the compartment body through hinges, observation windows are arranged at the upper ends of the opening and closing doors in a penetrating manner, and observation mechanisms are arranged at the upper ends of the observation windows respectively. Handles are installed at one ends of the front side and the rear side of the opening and closing door correspondingly, and fingerprint coded locks and face recognizers are installed at the ends, close to the handles, of the front side and the rear side of the opening and closing door correspondingly. The observation mechanism is arranged at the upper end of the observation window and comprises the movable mirror, the extension rod, the push-pull rod and the like, a user pulls the handle to drive the push-pull rod to move, the mirror can extend out of the temporary storage groove, the position of the mirror can be adjusted, and therefore reflection observation can be conducted on dead angle areas at the lower end and the two sides of the observation window. The visual field range is effectively expanded, potential safety hazards caused by dead angles are avoided, and the security and protection reliability is improved.
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Description

Technical Field

[0001] This utility model relates to the field of security door technology, and more specifically, to an anti-tailgating interlocking security door. Background Technology

[0002] Anti-tailgating interlocking security doors are a type of high-end security system that integrates physical isolation, intelligent algorithms, and multimodal authentication. They prevent unauthorized entry through dual-door interlocking logic and AI behavior analysis. For example, the anti-tailgating interlocking security door proposed in application number "CN202023133898.X" relates to the field of anti-tailgating interlocking security door technology and aims to solve the problem that existing anti-tailgating interlocking security doors cannot be used for escape after damage, resulting in poor escape performance. The safety door body has an outer door on one side and an inner door on the other side. The front end of the inner door is equipped with a video intercom mechanism, which is fixedly connected to the inner door. Both the outer and inner doors have interlocking mechanisms on one side, which are fixedly connected to both the outer and inner doors. The safety door body has a passageway inside, which is an integral structure with the safety door body. A rearview mirror is installed inside the passageway. Both the outer and inner doors have solid panels inside. An emergency telephone is installed on one side of the rearview mirror. A cushion is installed on the inner wall of the passageway.

[0003] However, the above technical solutions rely solely on peepholes or video intercoms for external observation, which has limited viewing angles and makes it difficult to cover blind spots below and on both sides of the door. This may result in personnel being unable to detect blind spots, posing a safety hazard. Therefore, we propose an anti-tailgating interlocking safety door to solve the above problems. Utility Model Content

[0004] The main purpose of this utility model is to provide an anti-tailgating interlocking safety door, which solves the problem that relying solely on peepholes or video intercom mechanisms for external observation has limited viewing angles and makes it difficult to cover the blind spots below and on both sides of the door, which may result in personnel crouching in blind spots going unnoticed and posing a safety hazard.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An anti-tailgating interlocking safety door includes a compartment. Both the front and rear ends of the compartment are fitted with hinged doors. Each door has a viewing window extending through its upper end. Each viewing window has a viewing mechanism at its upper end. Handles are installed at one end of each door on both the front and rear sides. A fingerprint lock and a facial recognition device are installed at the ends of each door near the handles. Each viewing mechanism includes a storage slot located at the upper end of the viewing window on opposite sides. A mirror is fitted inside each storage slot. An extension rod is installed on the side of each mirror closest to the other. Through holes are provided inside each storage slot on opposite sides. A push-pull rod is movably installed through each through hole. The extension rod is fitted inside the through hole and is connected to the push-pull rod. Handles are installed on the opposite ends of each push-pull rod.

[0007] Preferably, a light is installed at the upper part of the interior of the compartment, and a bench is placed inside the compartment.

[0008] Preferably, the extension rod has a groove at one end near the push-pull rod, and a fixing rod is installed inside the groove. A connecting block is installed at one end of the push-pull rod near the fixing rod. The connecting blocks are movably installed inside the groove, and the rod body of the fixing rod is movably installed through the connecting block.

[0009] Preferably, the connecting block has an annular groove inside with the fixed rod as the axis, and annular blocks are movably installed inside the annular groove. Guide grooves are provided inside the annular groove and on the side near the extension rod. Support blocks are movably installed inside the guide grooves. The ends of the support blocks that are close to each other are connected to the annular blocks, and the ends of the support blocks that are far apart from each other are connected to the extension rod.

[0010] Preferably, the upper ends of the doors on opposite sides are provided with connecting grooves, the lower ends of the connecting grooves are connected to the through holes, the push-pull rods are respectively engaged and installed inside the connecting grooves, the upper ends of the connecting grooves are respectively provided with engaging grooves, and the handles are respectively engaged and installed inside the engaging grooves.

[0011] Preferably, the handle and the door are respectively provided with a placement groove at one end near the locking groove, and a magnet is installed in the placement groove. The magnets are attracted to each other magnetically. The two sides of the lower end of the locking groove are respectively provided with a retrieval groove.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] (1) In this utility model, an observation mechanism is set at the upper end of the observation window, including a movable mirror, an extension rod and a push-pull rod. The user can pull the handle to move the push-pull rod, so that the mirror can extend out of the temporary storage slot and adjust its position, thereby reflecting and observing the blind spots at the lower end and sides of the observation window, effectively expanding the field of vision, avoiding safety hazards caused by blind spots, and improving security reliability. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of an anti-tailgating interlocking safety door according to the present invention;

[0015] Figure 2 This is a front view structural diagram of an anti-tailgating interlocking safety door according to the present invention;

[0016] Figure 3 This utility model relates to an anti-tailgating interlocking safety door. Figure 2 Schematic diagram of the cross-sectional structure at point AA;

[0017] Figure 4 This utility model relates to an anti-tailgating interlocking safety door. Figure 2 Schematic diagram of the cross-sectional structure at point BB;

[0018] Figure 5 This utility model relates to an anti-tailgating interlocking safety door. Figure 3 Enlarged structural diagram at point C;

[0019] Figure 6 This utility model relates to an anti-tailgating interlocking safety door. Figure 5 Enlarged structural diagram at point D.

[0020] In the diagram: 1. Body; 2. Door; 3. Observation window; 4. Observation mechanism; 401. Temporary storage slot; 402. Mirror; 403. Extension rod; 404. Push-pull rod; 405. Through hole; 406. Groove; 407. Fixing rod; 408. Connecting block; 409. Annular groove; 410. Annular block; 411. Guide groove; 412. Support block; 413. Handle; 414. Engaging groove; 415. Connecting groove; 416. Placement groove; 417. Magnet; 418. Retrieval groove; 5. Handle; 6. Fingerprint lock; 7. Facial recognition device; 8. Lighting; 9. Bench. Detailed Implementation

[0021] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0022] like Figures 1 to 6 As shown in the figure, this utility model embodiment proposes an anti-tailgating interlocking safety door, including a compartment 1. Both the front and rear ends of the compartment 1 are fitted with hinged doors 2. Each door 2 has an observation window 3 extending through its upper end. The upper end of each observation window 3 is equipped with an observation mechanism 4. Handles 5 are installed on one end of each of the front and rear sides of the door 2. A fingerprint lock 6 and a facial recognition device 7 are respectively installed on the front and rear sides of the door 2 near the handles 5. The observation mechanism 4 includes a temporary storage slot 401, which is located within the observation window 3. At the upper end and on the side away from each other, mirrors 402 are fitted inside the temporary storage tank 401. Extension rods 403 are installed on the side of the mirrors 402 that are close to each other. Through holes 405 are provided inside the temporary storage tank 401 that are close to each other. Push-pull rods 404 are movably installed inside the through holes 405. The rod body of the extension rod 403 is fitted inside the through hole 405. The extension rod 403 and the push-pull rod 404 are fitted together. Handles 413 are installed on the ends of the push-pull rods 404 that are close to each other.

[0023] like Figure 5 and Figure 6As shown, in another embodiment of this utility model, a lighting lamp 8 is installed at the upper end of the interior of the compartment 1, and a bench 9 is placed inside the compartment 1. The extension rod 403 has a groove 406 at one end near the push-pull rod 404. A fixing rod 407 is installed inside the groove 406. A connecting block 408 is installed at one end of the push-pull rod 404 near the fixing rod 407. The connecting blocks 408 are movably installed inside the groove 406, and the rods of the fixing rods 407 are movably installed through the connecting blocks 408. An annular groove 409 is provided inside the connecting block 408 with the fixing rod 407 as its axis. An annular block 410 is movably installed inside the annular groove 409. A guide groove 411 is provided through the annular groove 409 on one side near the extension rod 403. The guide groove 411 is... The movable part is equipped with a support block 412. The ends of the support blocks 412 that are close to each other are connected to the ring block 410, and the ends of the support blocks 412 that are far apart from each other are connected to the extension rod 403. The upper ends of the opening and closing doors 2 that are close to each other are respectively provided with connecting grooves 415. The lower ends of the connecting grooves 415 are connected to the through holes 405. The push and pull rods 404 are respectively engaged and installed inside the connecting grooves 415. The upper ends of the connecting grooves 415 are respectively provided with engaging grooves 414. The handles 413 are respectively engaged and installed inside the engaging grooves 414. The interior of the handles 413 and the interior of the opening and closing doors 2 that are close to the engaging grooves 414 are respectively provided with placement grooves 416. The interior of the placement grooves 416 are respectively provided with magnets 417. The magnets 417 are magnetically attracted to each other. The lower ends of the engaging grooves 414 are respectively provided with retrieval grooves 418 on both sides.

[0024] When a user needs to view the lower end or the four corners of the observation window 3, the user first pushes the handle 413 outward through the take-up slot 418, disengaging the handle 413 from the engagement slot 414. Then, the handle 413 drives the push-pull rod 404 and the connecting block 408 to rotate 90° around the fixed rod 407, changing their orientation from vertical to horizontal. Simultaneously, as the connecting block 408 rotates, it also rotates around the annular block 410 via the annular groove 409, thereby causing the annular block 410 to... The support block 412 slides along the guide groove 411, so that the support block 412 is connected to the lower end of the guide groove 411. Then, the user can push the push-pull rod 404, the extension rod 403 and the mirror 402 outward through the handle 413 to inspect the lower end of the observation window 3. The user can also control the push-pull rod 404, the connecting block 408, the fixing rod 407 and the support block 412 through the handle 413 to drive the extension rod 403 and the mirror 402 to rotate, so that the user can easily view both sides of the observation window 3.

[0025] The support block 412 and the guide groove 411 are used to position the connecting block 408 and the extension rod 403 to prevent the extension rod 403 from automatically rotating around the fixed rod 407 when the user pushes the extension rod 403 out of the through hole 405 using the handle 413, which would cause the mirror 402 to malfunction.

[0026] Magnet 417 is used to assist in the installation of handle 413, allowing handle 413 to be stably placed inside the engagement slot 414 by magnetic attraction;

[0027] Bench 9 can be used as a footrest when the user is not tall enough, or it can be used to rest in case of an accident and then call the police.

[0028] The working principle of this anti-tailgating interlocking safety door:

[0029] In use, when the user needs to view the lower end or the four corners of the observation window 3, the user first pushes the handle 413 outward through the take-up slot 418, disengaging the handle 413 from the inside of the engagement slot 414. Then, the handle 413 can drive the push-pull rod 404 and the connecting block 408 to rotate 90° around the fixed rod 407, changing it from vertical to horizontal. At the same time, when the connecting block 408 rotates, it will also rotate around the annular block 410 through the annular groove 409, thereby allowing the annular block 410 to rotate. The support block 412 on the 10 slides along the guide groove 411, so that the support block 412 is connected to the lower end of the guide groove 411. Then, the user can push the push-pull rod 404, the extension rod 403 and the mirror 402 outward through the handle 413 to inspect the lower end of the observation window 3. The user can also control the push-pull rod 404, the connecting block 408, the fixing rod 407 and the support block 412 through the handle 413 to drive the extension rod 403 and the mirror 402 to rotate, so that the user can easily view both sides of the observation window 3.

[0030] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. Any obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.

Claims

1. A tailgating-proof interlocking safety door, comprising a compartment (1), characterized in that: The interior of the compartment (1) has hinged doors (2) installed at both the front and rear ends. Each door (2) has an observation window (3) extending through its upper end. Each observation window (3) has an observation mechanism (4) at its upper end. Each door (2) has a handle (5) installed at one end on each side. A fingerprint lock (6) and a face recognition device (7) are installed on the front and rear sides of each door (2) near the handle (5). Each observation mechanism (4) includes a storage slot (401), located at the upper end of each observation window (3) on opposite sides. Mirrors (402) are fitted inside the temporary storage slots (401). Extension rods (403) are respectively installed on the side of the mirrors (402) that are close to each other. Through holes (405) are respectively provided inside the temporary storage slots (401) and on the side that are close to each other. Push-pull rods (404) are movably installed inside the through holes (405). The rod body of the extension rod (403) is fitted inside the through hole (405). The extension rod (403) and the push-pull rod (404) are fitted together. Handles (413) are respectively installed on the side of the push-pull rods (404) that are close to each other.

2. The anti-tailgating interlocking safety door according to claim 1, characterized in that: A lighting lamp (8) is installed at the upper part of the interior of the compartment (1), and a bench (9) is placed inside the compartment (1).

3. The anti-tailgating interlocking safety door according to claim 1, characterized in that: The extension rod (403) is provided with a groove (406) at one end near the push-pull rod (404). A fixing rod (407) is installed inside the groove (406). A connecting block (408) is installed at one end of the push-pull rod (404) near the fixing rod (407). The connecting block (408) is movably installed inside the groove (406), and the rod body of the fixing rod (407) is movably installed through the inside of the connecting block (408).

4. The anti-tailgating interlocking safety door according to claim 3, characterized in that: The connecting block (408) has an annular groove (409) with the fixed rod (407) as the axis inside. Annular blocks (410) are movably installed inside the annular groove (409). Guide grooves (411) are provided through the annular groove (409) on the side near the extension rod (403). Support blocks (412) are movably installed through the guide grooves (411). The ends of the support blocks (412) that are close to each other are connected to the annular blocks (410), and the ends of the support blocks (412) that are far apart from each other are connected to the extension rod (403).

5. A tailgating-proof interlocking safety door according to claim 1, characterized in that: The upper ends of the opening and closing doors (2) on the side close to each other are respectively provided with connecting grooves (415). The lower end of the connecting groove (415) is connected to the through hole (405). The push-pull rods (404) are respectively engaged and installed inside the connecting grooves (415). The upper end of the connecting grooves (415) is respectively provided with engaging grooves (414). The handles (413) are respectively engaged and installed inside the engaging grooves (414).

6. A tailgating-proof interlocking safety door according to claim 5, characterized in that: The handle (413) and the door (2) are respectively provided with a placement groove (416) at one end near the locking groove (414). Magnets (417) are installed inside the placement grooves (416) respectively. The magnets (417) are magnetically attracted to each other. The two sides of the lower end of the locking groove (414) are respectively provided with a retrieval groove (418).