Access door applied to prison

Abstract

The invention relates to the field of prison doors, and discloses a channel door applied to a prison, the channel door is applied to a channel, the channel door comprises a turnover door and a sliding door which are arranged at the two opposite ends of the channel, and a first locking mechanism and a second locking mechanism are arranged between the sliding door and the channel and jointly lock the sliding door; an unlocking pedal capable of moving up and down is arranged at the bottom of the channel, the unlocking pedal can drive the first locking mechanism to be unlocked after moving downwards by a preset distance, and in the state, the turnover door is rotated to be closed, and the turnover door extrudes part of the unlocking pedal to drive the second locking mechanism to be unlocked; by means of the design of the unlocking pedal and the double locking mechanisms, the possibility of following and parallel passing is fundamentally eradicated, people with different body forms can pass without limiting the size of a channel, and the adaptation problem caused by the fixed size of the channel is avoided.

Description

Technical Field

[0001] The present invention relates to the field of prison doors, in particular to a passage door used in prisons. Background Art

[0002] Installing anti-tailgating doors between different functional areas within the prison (such as cell blocks, office areas, interrogation areas, and exercise areas) can effectively limit the flow of personnel and prevent unauthorized personnel from entering and leaving high-risk areas at will, thereby reducing security risks such as jailbreaks, collusion, and violent incidents. Existing technology (authorization announcement number CN205577755U) discloses a cell door with a composite structure for preventing tailgating. Although it claims to utilize sliding doors and swing doors in conjunction with a short passageway to restrict passage to only one person, due to the differences in height, weight, and body shape among prisoners or suspects, taller or heavier prisoners typically require more space, while smaller or shorter prisoners take up less space. Furthermore, the dimensions of the so-called short passageway in this prior art are difficult to define, and the passageway is fixed and cannot be changed. Therefore, this prior art still has certain drawbacks in practical application. If sensors and other related detection devices are used, such as infrared beam sensors, thermal imaging or pyroelectric sensors, infrared beam sensors cannot identify multiple people walking in parallel or closely together, while thermal imaging or pyroelectric sensors will cause heat overlap when multiple people approach at the same time, making it difficult to count accurately. Therefore, it is also necessary to introduce AI edge computing devices and design adaptive recognition algorithms. On the one hand, this will significantly increase the complexity of the system, involving multiple technical links such as hardware selection, algorithm development, and data transmission; on the other hand, deployment costs and maintenance thresholds will also increase. Especially in prison environments with limited resources, how to balance security needs and economic feasibility has become an urgent problem to be solved. Summary of the Invention

[0003] The purpose of this application is to provide a prison passage door to solve the problem that the existing passage size is difficult to define and cannot accurately limit the passage of a single person. The use of common infrared sensors, thermal imaging or pyroelectric sensors still faces the problem of easy interference or inaccurate detection. The specific technical solution is as follows: A passage door used in a prison, used in a passage, comprises a flip door and a sliding door arranged at opposite ends of the passage, a first locking mechanism and a second locking mechanism are provided between the sliding door and the passage and jointly lock the sliding door, an unlocking pedal which can move up and down is provided at the bottom of the passage, the unlocking pedal can drive the first locking mechanism to unlock after moving downward a predetermined distance, and in this state, the flip door is rotated to be closed, and the flip door squeezes part of the unlocking pedal to drive the second locking mechanism to unlock.

[0004] As one of the improvements of the above technical solution, the second locking mechanism includes an L-shaped snap portion and a torsion spring. The L-shaped snap portion is rotationally connected to the sliding door, and the two ends of the torsion spring are respectively in contact with the L-shaped snap portion and the sliding door. The torsion spring drives the L-shaped snap portion to protrude from the sliding door.

[0005] As one of the improvements of the above technical solution, the unlocking pedal is provided with a receiving groove and can accommodate the protruding part of the L-shaped buckle part. The interior of the unlocking pedal is provided with a transversely arranged through channel, one end of the through channel is connected to the receiving groove, and a telescopic rod is provided in the through channel, and the telescopic rod is used to push out the L-shaped buckle part.

[0006] As one of the improvements of the above technical solution, a support rod is connected to the side of the flip door. When the unlocking pedal moves downward a predetermined distance and the flip door is closed, the support rod enters the through channel and squeezes the telescopic rod.

[0007] As one of the improvements of the above technical solution, the receiving groove is rectangular in shape, and the through channel is arranged at a position close to the top of the receiving groove.

[0008] As one of the improvements of the above technical solution, a roller is rotatably connected to the end surface of the protruding portion of the L-shaped buckle portion.

[0009] As one of the improvements of the above technical solution, the unlocking pedal includes a pedal body and a base arranged below the pedal body, and a return spring is provided between the base and the pedal body.

[0010] As one of the improvements of the above technical solution, a distance measuring device is provided between the pedal body and the base, and the first locking mechanism includes a first electronic lock, which is signal-connected to the distance measuring device.

[0011] As one of the improvements of the above technical solution, the distance measuring device is preset with a distance X1-X2, and is configured so that when the unlocking pedal moves downwardly within a distance between X1-X2, the support rod can enter the through channel.

[0012] As one of the improvements of the above technical solution, the first locking mechanism also includes a second electronic lock, which is connected to the distance measuring device signal and is configured to trigger the second electronic lock to lock the sliding door and the passage when the unlocking pedal moves downward a distance exceeding X2.

[0013] The beneficial effects of the present application are as follows: the present invention fundamentally eliminates the possibility of tailgating or parallel passage through the design of the unlocking pedal and the double locking mechanism, and allows people of different body sizes to pass without restricting the size of the passage, avoiding the adaptation difficulties caused by fixed passage sizes; because the locking mechanism is triggered by human movement or human weight rather than physical space restrictions, no matter how tall or short, fat or thin the passerby is, as long as they complete the standard passage process, they can pass smoothly, which not only ensures the passage efficiency, but also avoids obstructions or loopholes caused by body size differences; the overall structure is simple and reliable, with low maintenance costs, suitable for deployment in special environments such as prisons, and has high safety performance, effectively preventing jailbreaks, collusion, and violent incidents; The double locking mechanism ensures that only one person can pass through at a time, and the front and rear doors are interlocked, forming a strict "one in and one out" control mode, which greatly improves the security level of key areas inside the prison and helps prevent various emergencies.

[0014] Additional aspects and advantages of the present invention will be given in part in the description below, and in part will become apparent from the description below, or will be understood through the practice of the present invention. Of course, it is not necessary to achieve all of the advantages described above at the same time to implement any product or method of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a structural schematic diagram of the present invention.

[0017] Figure 2 It is a structural schematic diagram of the flip door of the present invention.

[0018] Figure 3 It is a structural schematic diagram of the unlocking pedal of the present invention.

[0019] Figure 4 It is another structural schematic diagram of the unlocking pedal of the present invention.

[0020] Figure 5 It is a structural schematic diagram of the second locking mechanism of the present invention.

[0021] Figure 6 It is a structural schematic diagram of the telescopic rod of the present invention.

[0022] In the figure: 1. Passage; 2. Flip door; 3. Sliding door; 4. First locking mechanism; 5. Second locking mechanism; 6. Unlocking pedal; 21. Support rod; 41. First electronic lock; 42. Second electronic lock; 51. L-shaped buckle; 52. Torsion spring; 53. Roller; 61. Telescopic rod; 62. Base; 63. Return spring; 64. Distance measuring device. DETAILED DESCRIPTION

[0023] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0024] The existing channel 1 is difficult to define in terms of size, and it is not possible to accurately limit the passage of a single person. The use of common infrared sensors, thermal imaging or pyroelectric sensors still faces the problem of easy interference or inaccurate detection. Please refer to Figures 1-6 In an embodiment of the present invention, a passageway door 1 for use in a prison is provided. The passageway 1 includes a reversible door 2 and a sliding door 3 disposed at opposite ends of the passageway 1. A first locking mechanism 4 and a second locking mechanism 5 are disposed between the sliding door 3 and the passageway 1 and jointly lock the sliding door 3. An unlocking pedal 6 movable up and down is disposed at the bottom of the passageway 1. The unlocking pedal 6 can drive the first locking mechanism 4 to unlock after moving downward a predetermined distance. In this state, the reversible door 2 is rotated to be closed, and the reversible door 2 squeezes a portion of the unlocking pedal 6 to drive the second locking mechanism 5 to unlock. The flip door 2 is mounted at one end of the passage 1 and can rotate about its axis, with two states: open and closed. It is mounted at the other end of the passage 1 and can slide horizontally on a track to open and close. The unlocking pedal 6 is made of a rigid or elastic metal / composite material with a non-slip surface to ensure sufficient pressure feedback when the foot of a passerby touches it. When a person enters the passage 1 through the flip door 2, he or she presses the unlocking pedal 6 with his or her foot, causing it to move downward a predetermined distance (e.g., 1-3 cm). This displacement signal is captured by a mechanical or electronic device, which drives the first locking mechanism 4 to unlock. At this time, the sliding door 3 only unlocks the first locking mechanism 4 and still cannot slide open. Subsequently, when the person continues to push the flip door 2 forward to the fully closed position, the structural components of the flip door 2 will squeeze part of the unlocking pedal 6, triggering the linkage mechanism, and further driving the second locking mechanism 5 to unlock. At this time, the sliding door 3 can be opened, allowing people to leave from the other end of the passage 1.

[0025] Single-person access control is achieved through mechanical linkage, without relying on complex sensor systems. Traditional solutions often use infrared radiation, thermal imaging and other methods to detect the number of people, but there are problems such as high misjudgment rate and susceptibility to interference. The present invention fundamentally eliminates the possibility of tailgating and parallel passage through the mechanical linkage design of the unlocking pedal 6 and the double locking mechanism, and does not limit the size of channel 1, allowing people of different body shapes to pass through, avoiding the adaptation difficulties caused by the fixed size of channel 1; it is understandable that since the locking mechanism is triggered based on human movement or human weight rather than physical space restrictions, no matter how tall or short, fat or thin the passerby is, as long as he completes the standard passage process, he can pass smoothly, which not only ensures the passage efficiency, but also does not cause obstruction or loopholes due to body size differences; the overall structure is simple and reliable, with low maintenance costs, suitable for deployment in special environments such as prisons, and has high safety performance, effectively preventing jailbreaks, collusion, and violent incidents; The double locking mechanism ensures that only one person can pass through at a time, and the front and rear doors are interlocked, forming a strict "one in and one out" control mode, which greatly improves the security level of key areas inside the prison and helps prevent various emergencies.

[0026] In some embodiments, the second locking mechanism 5 includes an L-shaped buckle portion 51 and a torsion spring 52. The L-shaped buckle portion 51 is rotatably connected to the sliding door 3. The two ends of the torsion spring 52 are respectively in contact with the L-shaped buckle portion 51 and the sliding door 3. The torsion spring 52 drives the L-shaped buckle portion 51 to protrude from the sliding door 3. Under the elastic action of the torsion spring 52, the L-shaped buckle portion 51 is driven to a state of protruding from the surface of the sliding door 3, and is buckled into the channel 1 to form a physical barrier. This embodiment has a simple structure, sensitive response, and good self-resetting performance. force; the mechanical structure of the combination of L-shaped buckle and torsion spring 52 can realize automatic locking and resetting functions without external power source, with fast response speed and reliable operation, which is particularly suitable for high-intensity use scenarios such as prisons; it can effectively prevent illegal opening and improve the security level of access control. The second locking mechanism 5 is the last line of defense in the passage process. It can only be unlocked after all the previous steps (such as stepping on the unlocking pedal 6 and closing the flip door 2) are completed, ensuring that only one person can pass through at a time, eliminating tailgating or forced entry; Preferably, the unlocking pedal 6 is provided with a receiving groove and can accommodate the protruding part of the L-shaped buckle part 51. The interior of the unlocking pedal 6 is provided with a transversely arranged through channel 1, one end of the through channel 1 is connected with the receiving groove, and a telescopic rod 61 is provided in the through channel 1, and the telescopic rod 61 is used to push out the L-shaped buckle part 51; by arranging the receiving groove and the telescopic rod 61 structure inside the unlocking pedal 6, the stepping action can directly act on the L-shaped buckle part 51, and the unlocking process can be completed without the need for additional sensors or electronic control modules, thereby enhancing the logical correlation and action synchronization between the various components.

[0027] In some embodiments, in order to ensure that the telescopic rod 61 can be accurately pushed out, a support rod 21 is connected to the side of the flip door 2. When the unlocking pedal 6 moves downward a predetermined distance and the flip door 2 is closed, the support rod 21 enters the through channel 1 and squeezes the telescopic rod 61. Preferably, the accommodating groove is rectangular in shape, and the accommodating groove is arranged near the top of the through channel 1.

[0028] Taking into account that after the L-shaped snap portion 51 is pushed out, during the sliding process of the sliding door 3, under the action of the torsion spring 52, the protrusion of the L-shaped snap portion 51 will abut against the channel 1 during the sliding process of the sliding door 3, preferably, the protrusion of the L-shaped snap portion 51 will be directly connected to the end face of the part with a roller 53 for rotation, and the roller 53 is provided to reduce wear.

[0029] In some embodiments, the unlocking pedal 6 includes a pedal body and a base 62 disposed below the pedal body, a return spring 63 is disposed between the base 62 and the pedal body, and a return spring 63 is disposed between the pedal body and the base 62 for automatically returning the pedal body to its initial height position when no external force is applied; A distance measuring device 64 is provided between the pedal body and the base 62. The first locking mechanism 4 includes a first electronic lock 41. The first electronic lock 41 is connected to the distance measuring device 64 by signal. Preferably, the distance measuring device 64 is preset with a distance X1-X2, and is configured so that when the distance of the unlocked pedal 6 moving downward is between X1-X2, the support rod 21 can enter the through-channel 1. It can be understood that by setting a reasonable stepping distance interval (X1-X2) by the distance measuring device 64, it is possible to effectively distinguish normal passage actions from misoperation or multi-person stepping behaviors, ensuring that only one person can pass through at a time, which greatly improves the safety level of the system. Specifically, the numerical range of X1 and X2 is The range can be adjusted based on the weight of the prisoners in the prison. For example, assuming that the smallest weight of the prisoners in the prison is Y kilograms, the descending distance X3 of the unlocking pedal 6 is obtained after calculating 2×Y kilograms acting on the unlocking pedal 6 (combined with the return spring 63). Then, as long as the descending distance of the unlocking pedal 6 exceeds or equals X3, it can be determined that multiple people have entered the passage 1. At this time, the first locking mechanism 4 or the first electronic lock 41 will not be unlocked; for the individual case of extremely obese prisoners, it is understandable that the weight of extremely obese prisoners may be greater than 2×Y kilograms. Therefore, the prison guards can unlock the first locking mechanism 4 for them separately or detain them separately.

[0030] In some extreme cases, such as high-risk areas where there is a possibility of jailbreaks and violent incidents, when multiple people are identified entering the passage 1, although the first locking mechanism 4 is not unlocked, considering that the second locking mechanism 5 will be unlocked as long as the flip door 2 is closed, it is equivalent to losing one safety factor, and relying solely on the first locking mechanism 4 is obviously not safe enough; for this reason, the first locking mechanism 4 also includes a second electronic lock 42, and the second electronic lock 42 is connected to the distance measuring device 64 by signal, and is configured to trigger the second electronic lock 42 to lock the sliding door 3 and the passage 1 when the unlocking pedal 6 moves downward by a distance exceeding X2.

[0031] The mechanical structure, combined with a dual-locking mechanism, achieves physical-level security control of access to Channel 1, effectively resolving the high misjudgment rate and susceptibility to interference associated with traditional infrared / pyroelectric sensors. This system is particularly suitable for deployment in high-risk, high-security enclosed environments such as prisons, demonstrating promising application prospects and widespread adoption.

[0032] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0033] It should be noted that the terms "first," "second," etc., used herein are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features being referred to. Therefore, a feature designated as "first" or "second" may explicitly or implicitly include one or more of the aforementioned features.

[0034] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced therein.

Claims

1. A passage door used in a prison, used in a passage, characterized in that: It includes a flip door and a sliding door arranged at opposite ends of the channel, a first locking mechanism and a second locking mechanism are provided between the sliding door and the channel and jointly lock the sliding door, and an unlocking pedal that can move up and down is provided at the bottom of the channel, and the unlocking pedal can drive the first locking mechanism to unlock after moving downward a predetermined distance. In this state, the flip door is rotated to be closed, and the flip door squeezes part of the unlocking pedal to drive the second locking mechanism to unlock.

2. The passage door used in a prison according to claim 1, characterized in that: The second locking mechanism includes an L-shaped snap portion and a torsion spring. The L-shaped snap portion is rotationally connected to the sliding door. The two ends of the torsion spring are respectively in contact with the L-shaped snap portion and the sliding door. The torsion spring drives the L-shaped snap portion to protrude from the sliding door.

3. The passage door used in a prison according to claim 2, characterized in that: The unlocking pedal is provided with a receiving groove and can accommodate the protruding part of the L-shaped buckle part. The interior of the unlocking pedal is provided with a transversely arranged through channel, one end of the through channel is connected to the receiving groove, and a telescopic rod is provided in the through channel, and the telescopic rod is used to push out the L-shaped buckle part.

4. The passage door used in a prison according to claim 3, characterized in that: A support rod is connected to the side of the flip door. When the unlocking pedal moves downward a predetermined distance and the flip door is closed, the support rod enters the through channel and squeezes the telescopic rod.

5. The passage door used in a prison according to claim 3, characterized in that: The receiving groove is rectangular in shape, and the through channel is arranged at a position close to the top of the receiving groove.

6. The passage door used in a prison according to claim 2, characterized in that: A roller is rotatably connected to the end surface of the protruding portion of the L-shaped buckle portion.

7. The passage door used in a prison according to claim 4, characterized in that: The unlocking pedal includes a pedal body and a base arranged below the pedal body, and a return spring is provided between the base and the pedal body.

8. The passage door used in a prison according to claim 7, characterized in that: A distance measuring device is provided between the pedal body and the base. The first locking mechanism includes a first electronic lock. The first electronic lock is connected to the distance measuring device by signal.

9. The passage door used in a prison according to claim 8, characterized in that: The distance measuring device is preset with a distance X1-X2, and is configured so that when the unlocking pedal moves downwardly by a distance between X1-X2, the support rod can enter the through channel.

10. The passage door used in a prison according to claim 9, characterized in that: The first locking mechanism also includes a second electronic lock, which is connected to the distance measuring device signal and is configured to trigger the second electronic lock to lock the sliding door and the passage when the unlocking pedal moves downward a distance exceeding X2.

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