A vault door capable of preventing illegal prying

Abstract

This invention discloses a vault door designed to prevent unauthorized prying, relating to the field of vault security door technology. It includes: an inner frame, a vault door, and a locking module. The vault door is hinged to the inner frame via one side wall. The locking module is fixedly connected to the vault door and embedded within the inner frame. It also includes: a monitoring and feedback component and a resistance enhancement component, both located on the same vertical plane. The monitoring and feedback component provides an early warning of unauthorized prying. The resistance enhancement component effectively prevents unauthorized intrusion by criminals, thus avoiding a serious threat to the security of valuables in the vault. This design overcomes the shortcomings of existing technologies in terms of anti-pry performance, which passively withstand prying. By adding resistance when the vault door is pried, it provides an active resistance mechanism, differentiating itself from passively accepting prying.

Description

Technical Field

[0001] This invention relates to the field of vault security door technology, specifically a vault door designed to prevent unauthorized prying. Background Technology

[0002] Existing technologies, such as the Chinese patent entitled "An Anti-pry Vault Door for Base Stations" with announcement number CN219197066U3, mention that "a power component can drive a concave plate to move within a cavity, thereby squeezing the movable rod and causing it to enter a slot, thus locking the door. The four movable rods simultaneously lock the top and bottom of the door, further increasing the security of the vault door. When opened, a spring pushes the movable rod to automatically enter the arc-shaped groove, causing the movable rod to move out of the slot. At the same time, the second pressure sensor in the slot loses pressure, and the movable rod then squeezes the first pressure sensor in the arc-shaped groove. As long as either the first or second pressure sensor is in a working state, the alarm will not sound. However, when the vault door is pried open, both the first and second pressure sensors are in a depressurized state, and the alarm will sound."

[0003] However, the aforementioned patent documents and the equipment in the prior art have the following problems in actual use;

[0004] 1. Deficiencies in the early warning mechanism:

[0005] Lack of physical, mechanical early warning systems and insufficient reliability: Existing vault doors lack physical, mechanical early warning and monitoring equipment, relying entirely on electronic early warning systems, which poses numerous risks. Electronic early warning systems are susceptible to external factors such as electromagnetic interference and hacker attacks. Once the electronic system is interfered with or attacked, the early warning function may instantly fail, leaving the vault's security in an extremely unstable state. For example, criminals could use specialized electromagnetic interference equipment to disable electronic sensors, thus approaching the vault door undetected.

[0006] 2. Insufficient pry resistance:

[0007] Passive resistance to prying: Existing vault doors often only passively accept prying, lacking an active resistance mechanism. This means that the vault door cannot effectively resist illegal prying, increasing the risk of unauthorized entry. Once the vault door is pried open, the valuables inside face a significant threat of loss.

[0008] Therefore, we propose a vault door that incorporates physical and mechanical early warning and monitoring equipment to improve the reliability of early warnings, and can actively provide resistance to illegal prying when prying is detected, in order to solve the above problems. Summary of the Invention

[0009] In view of this, the technical problem to be solved by the present invention is to provide a vault door that prevents illegal prying, so as to solve the problems existing in the prior art.

[0010] To achieve the above objectives, the present invention provides the following technical solution: a vault door to prevent illegal prying, comprising: an inner frame, a vault door, and a locking module, wherein the vault door is hinged to the inner frame via a side wall, the locking module is fixedly connected to the vault door and is embedded in the inner frame, and further comprising: a monitoring feedback component and a resistance enhancement component, wherein the monitoring feedback component and the resistance enhancement component are on the same vertical plane;

[0011] The monitoring and feedback component is used to provide early warning of illegal prying and to activate the resistance enhancement component.

[0012] The resistance enhancement component is used to improve the safety performance of the vault door by adding a locking mechanism and increasing the resistance when the detection rod moves.

[0013] As an improvement, the monitoring feedback component includes a transverse groove fixedly connected to the inner cavity of the vault door. A spring A is fixedly connected transversely in the transverse groove. A detection rod is fixedly connected to one end of the spring A. The two ends of the detection rod are slidably connected transversely in the transverse groove. The vertical sidewall of the detection rod is flush with the sidewall of the vault door.

[0014] As an improvement, a square cavity is fixedly connected inside the door cavity, a magnet is provided at the top of the square cavity, and a strain gauge is fixedly connected at the bottom of the square cavity.

[0015] As an improvement, the resistance enhancement assembly includes a first magnetorheological fluid chamber fixedly connected to the inner cavity of the chamber door, a transverse tank fixedly connected to the first magnetorheological fluid chamber, a pusher slidably connected transversely in the first magnetorheological fluid chamber, one end of the pusher away from the first magnetorheological fluid chamber fixedly connected to a detection rod, and a spring B fixedly connected to the inner cavity of the first magnetorheological fluid chamber, one end of the spring B away from the fixed part of the first magnetorheological fluid chamber fixedly connected to the pusher.

[0016] As an improvement, vertical support members are fixedly connected through the first magnetorheological fluid chamber at equal intervals. A floating block is vertically slidably connected to the bottom of the vertical support member. A spring-loaded vertical rod is fixedly connected to the upper surface of the floating block. A notch is opened in the middle of the spring-loaded vertical rod, and an oblique strip is fixedly connected to the notch in the middle of the spring-loaded vertical rod.

[0017] As an improvement, a horizontal column is movably inserted into the vertical support member, and an oblique groove is opened on the horizontal column. The oblique strip is slidably adapted to the oblique groove, and a limiting piece is fixedly connected to one end of the horizontal column.

[0018] As an improvement, a second magnetorheological fluid chamber is fixedly connected to one side wall of the square cavity, and an arc-shaped locking piece is slidably connected to the second magnetorheological fluid chamber. An insertion groove is opened in the inner frame, and a toothed piece is fixedly connected in the insertion groove of the inner frame. An insertion groove is opened on the inner frame, and the arc-shaped locking piece can be inserted into the insertion groove.

[0019] As an improvement, both the first and second magnetorheological fluid tanks are connected to a filling pipe, which is connected to an external magnetic filling pump.

[0020] As an improvement, the arc-shaped locking piece is arc-shaped, and the outer end of the arc-shaped locking piece is designed as a toothed groove.

[0021] Compared with the prior art, the present invention provides a vault door that prevents illegal prying, and has the following beneficial effects:

[0022] 1. This application, through the design of the monitoring and feedback component, can effectively prevent the vault door from being in a state of extreme instability due to the failure of the early warning function once the electronic system is interfered with or attacked. This design makes up for the defects of the early warning mechanism in the above-mentioned documents and existing technologies. Because it is a physical mechanical early warning, unlike electronic early warning methods, it is not easily affected by external factors such as electromagnetic interference and hacker attacks, thus improving the reliability of the device.

[0023] 2. This application, through the design of the resistance-added component, can effectively prevent criminals from failing to effectively stop illegal intrusion when carrying out illegal prying, thus posing a serious threat to the security of the property in the vault. This design makes up for the insufficient anti-pry performance of the above-mentioned documents and existing technologies, which passively accept prying. It can add resistance interference when the vault door is pried, which is different from passively accepting prying and provides an active resistance mechanism.

[0024] 3. This application utilizes an arc-shaped latch design. From a mechanical perspective, the arc surface disperses the prying force, applying it over a larger area and reducing the pressure per unit area. Simultaneously, it increases the resistance torque, requiring unauthorized individuals to apply greater force to turn the latch. Furthermore, the outer end of the arc-shaped latch is designed with a toothed groove that, in conjunction with the toothed plate, effectively prevents prying tools from manipulating the door, increasing the difficulty of prying. In terms of anti-pry strategies, the smooth surface of the arc-shaped latch makes it easy for tools such as crowbars to slide, making it difficult for unauthorized individuals to find a point of leverage. From a material utilization perspective, the arc-shaped latch better utilizes material strength, withstanding greater stress without deformation or breakage. It also improves durability, reduces the possibility of localized wear and damage, extends service life, and ensures the vault door maintains a good anti-pry effect for a long time.

[0025] 4. This application can use the force of illegal prying as a working prerequisite for the subsequent resistance addition component, thereby indirectly activating the external magnetic injection pump of the device, causing the magnetorheological fluid to flow, and prompting the arc-shaped locking plate to perform secondary locking. This setting is different from the existing fixed number of locking structures, and can increase the number of locking structures after prying. Moreover, this linkage design, which can actively provide strong resistance to illegal prying when prying is detected, enhances the immediacy of protection, shortens the time difference in responding to illegal intrusion, improves the reliability of protection, changes the passive situation with an active defense mechanism, and enhances the comprehensiveness of protection. Attached Figure Description

[0026] Figure 1 This is an external view of the present invention;

[0027] Figure 2 This is an anatomical diagram of the embedded frame, door, and locking module in this invention.

[0028] Figure 3 This is a structural diagram of the gate of the present invention after being cut open;

[0029] Figure 4 The diagram shows the relevant structure of the arc-shaped locking piece of this invention.

[0030] Figure 5 These are structural diagrams of the arc-shaped locking plate and toothed plate of the present invention;

[0031] Figure 6 Structural diagrams related to the addition of components to the resistance system of this invention to remove the restriction of the magnet block;

[0032] Figure 7 For the present invention Figure 6 Enlarged view of a portion of the structure at point A;

[0033] Figure 8 A partial structural diagram of the component for adding resistance in this invention;

[0034] Figure 9 These are structural diagrams related to the oblique strips and oblique grooves in this invention;

[0035] Figure 10 This is a structural diagram of the magnet block and the limiting sheet in this invention.

[0036] In the picture:

[0037] 1. Embedded frame; 2. Warehouse door; 3. Locking module;

[0038] 4. Monitoring and feedback components; 401. Transverse groove; 402. Spring A; 403. Detection rod; 404. Square cavity; 405. Magnet block; 406. Strain gauge;

[0039] 5. Resistance enhancement components; 501. First magnetorheological fluid chamber; 502. Pushing component; 503. Spring B; 504. Vertical support component; 505. Floating block; 506. Spring-loaded vertical rod; 507. Angled bar; 508. Horizontal column; 509. Angled groove; 510. Restricting plate; 511. Second magnetorheological fluid chamber; 512. Arc-shaped locking plate; 513. Toothed plate. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0042] Example

[0043] Please refer to Figures 1 to 3 , Figure 6 , Figure 10 As shown:

[0044] To address the problems mentioned in the technical solutions, this application provides a vault door to prevent illegal prying, comprising: an inner frame 1, a vault door 2, and a locking module 3. The vault door 2 is hinged to the inner frame 1 via a side wall, and the locking module 3 is fixedly connected to the vault door 2 and is embedded in the inner frame 1. It also includes: a monitoring feedback component 4 and a resistance enhancement component 5, with the monitoring feedback component 4 and the resistance enhancement component 5 located on the same vertical plane.

[0045] The monitoring and feedback component 4 is used to provide early warning of illegal prying and to activate the resistance enhancement component 5.

[0046] The monitoring feedback component 4 includes a transverse groove 401 fixedly connected to the inner cavity of the door 2. A spring A402 is fixedly connected to the transverse groove 401. A detection rod 403 is fixedly connected to one end of the spring A402. The two ends of the detection rod 403 are slidably connected to the transverse groove 401. The vertical side wall of the detection rod 403 is flush with the side wall of the door 2. A square cavity 404 is fixedly connected to the inner cavity of the door 2. A magnet 405 is provided at the top of the inner cavity of the square cavity 404. A strain gauge 406 is fixedly connected to the bottom of the inner cavity of the square cavity 404.

[0047] in:

[0048] The monitoring and feedback component 4 is mainly used to provide early warning of illegal prying and to activate the resistance enhancement component 5.

[0049] The magnet 405 is mainly used to change the viscosity of the magnetorheological fluid in the first magnetorheological fluid chamber 501.

[0050] The strain gauge 406 and the magnetic injection pump connected to the injection pipe on the first magnetorheological fluid chamber 501 are electrically connected through the main controller. When the magnet 405 falls onto the strain gauge 406, the change in gravity will cause the strain gauge 406 to send a signal to the main controller, thereby starting the magnetic injection pump.

[0051] A strain gauge 406 is a strain measuring element composed of a sensitive grid. When the strain gauge 406 is attached to the surface of the object being measured, the object deforms, and the sensitive grid of the strain gauge 406 also deforms accordingly. Since the resistance value of the sensitive grid changes with its deformation, the magnitude of the strain of the object being measured can be calculated by measuring the change in the resistance value of the strain gauge 406 and then according to a certain relationship.

[0052] A further embodiment: Please refer to Figures 3 to 10 As shown:

[0053] The resistance enhancement component 5 is used to improve the safety performance of the door 2 by adding a locking mechanism and increasing the resistance when the detection rod 403 moves.

[0054] The resistance enhancement component 5 includes a first magnetorheological fluid chamber 501 fixedly connected to the inner cavity of the door 2; a transverse tank 401 fixedly connected to the first magnetorheological fluid chamber 501; a pusher 502 slidably connected transversely within the first magnetorheological fluid chamber 501; one end of the pusher 502 away from the first magnetorheological fluid chamber 501 fixedly connected to a detection rod 403; a spring B503 fixedly connected to the inner cavity of the first magnetorheological fluid chamber 501; one end of the spring B503 away from the fixed point of the first magnetorheological fluid chamber 501 fixedly connected to the pusher 502; vertical support members 504 equidistantly and fixedly connected through the first magnetorheological fluid chamber 501; a floating block 505 vertically and slidably connected to the bottom of the vertical support member 504; and a fixed connection on the upper surface of the floating block 505. A spring-loaded vertical rod 506 has a notch in the middle. A diagonal strip 507 is fixedly connected to the notch in the middle of the spring-loaded vertical rod 506. A transverse column 508 is movably inserted into the vertical support member 504. A diagonal groove 509 is opened on the transverse column 508. The diagonal strip 507 and the diagonal groove 509 are slidably adapted. A limiting piece 510 is fixedly connected to one end of the transverse column 508. A second magnetorheological fluid chamber 511 is fixedly connected to one side wall of the square cavity 404. An arc-shaped locking piece 512 is slidably connected in the second magnetorheological fluid chamber 511. An insertion groove is opened in the inner frame 1. A toothed piece 513 is fixedly connected in the insertion groove of the inner frame 1. The arc-shaped locking piece 512 can be inserted into the insertion groove.

[0055] in:

[0056] The resistance enhancement component 5 is mainly used to provide early warning of illegal prying and to activate the resistance enhancement component 5.

[0057] The resistance enhancement component 5 is mainly used to improve the safety performance of the door 2 by adding a locking mechanism and increasing the resistance when the detection rod 403 moves.

[0058] The first magnetorheological fluid chamber 501 is connected to a filling pipe, which is connected to a magnetic filling pump and is mainly used for filling magnetorheological fluid.

[0059] The pusher 502 consists of a crossbar and a pusher plate, and the upper part of the pusher plate has a through hole. This through hole is mainly used to allow the magnetorheological fluid to pass through when the door 2 is illegally pried open.

[0060] The floating block 505 is mainly used to move upward along the spring-loaded vertical rod 506 by the rising magnetorheological fluid in the first magnetorheological fluid tank 501.

[0061] The inclined strip 507 slides into the inclined groove 509, and the limiting piece 510 is mainly used to limit the magnet block 405.

[0062] The second magnetorheological fluid chamber 511 is connected to a filling pipe, which is connected to a magnetic filling pump and is mainly used for filling magnetorheological fluid.

[0063] The arc-shaped locking plate 512 is designed to disperse the force of prying, increasing the safety of prying. The outer end of the arc-shaped locking plate 512 is designed with a toothed groove; the toothed plate 513 is designed to match the toothed groove of the outer end of the arc-shaped locking plate 512.

[0064] The working principle of all the content in the above embodiments is as follows:

[0065] In the initial state:

[0066] Spring A402 is not compressed; the vertical side wall of detection rod 403 is flush with the side wall of door 2; magnet 405 is restricted by limiting piece 510 to the upper part of the inner cavity of square cavity 404; magnetorheological fluid is provided in both the first magnetorheological fluid chamber 501 and the second magnetorheological fluid chamber 511; spring B503 is in normal state and is not compressed; float block 505 floats on the magnetorheological fluid in the first magnetorheological fluid chamber 501; arc-shaped locking piece 512 is located in the second magnetorheological fluid chamber 511.

[0067] The following is the working process of monitoring and feedback component 4:

[0068] When in use, if criminals use prying devices to pry open the door 2 on the inner frame 1, please refer to the attached document for details. Figure 6 and appendix Figure 10As the prying progresses, the detection rod 403, flush with the side wall of the door 2, moves during the prying. At this time, the spring A402 in the transverse groove 401, which serves as a guide, is compressed. Simultaneously, the detection rod 403 moves along with the pusher 502 fixedly connected to it, thereby causing the resistance enhancement assembly 5 to perform a series of actions. The specific series of actions will be described in detail in the description of the operation of the resistance enhancement assembly 5. Furthermore, after the detection rod 403 causes the pusher 502 to perform a series of actions on the resistance enhancement assembly 5, the limiting plate 510 will release the magnetic block 405 in the square cavity 404. Under the constraint, the magnet 405 falls back into the strain gauge 406 located at the bottom of the square cavity 404. Under the action of gravity of the magnet 405, since it is known that the strain gauge 406 and the magnetic injection pump connected to the injection pipe on the first magnetorheological fluid chamber 501 and the second magnetorheological fluid chamber 511 are electrically connected through the main control, when the magnet 405 falls onto the strain gauge 406, the change in gravity will cause the strain gauge 406 to send a signal to the main controller, thereby realizing the start-up of the magnetic injection pump. At this time, the monitoring and early warning feedback of the door 2 is completed; the corresponding components of the resistance addition component 5 start to work.

[0069] Furthermore, through the design of the monitoring feedback component 4, this application can effectively prevent the vault door 2 from being in a state of extreme instability due to the failure of the early warning function once the electronic system is interfered with or attacked. This design makes up for the defects of the early warning mechanism in the aforementioned documents and existing technologies. Because it is a physical mechanical early warning, unlike electronic early warning methods, it is not easily affected by external factors such as electromagnetic interference and hacker attacks, thus improving the reliability of the device.

[0070] Please refer to the above work process. Figures 1 to 3 , Figure 6 , Figure 10 .

[0071] The following is the working process of the resistance enhancement component 5:

[0072] Furthermore, when the detection rod 403 moves with the pusher 502 within the first magnetorheological fluid chamber 501, please refer to the appendix for details. Figure 6 and appendix Figure 7The pusher 502 pushes the magnetorheological fluid in the first magnetorheological fluid chamber 501. As the push proceeds, the magnetorheological fluid in the first magnetorheological fluid chamber 501 is forced to rise, thus moving the floating block 505 upward. Furthermore, as the floating block 505 moves upward, it carries the spring-loaded vertical rod 506 upward. When the spring-loaded vertical rod 506 rises, the inclined bar 507 on it, through the inclined groove 509 opened on the horizontal column 508, forces the horizontal column 508 to move laterally. During the lateral movement, the horizontal column 508 carries the limiting plate 510 away from the square cavity 404. Further details can be found in the appendix. Figure 10 As the limiting plate 510 moves, it releases the restriction on the magnet block 405 in the square cavity 404. Under the gravity of the magnet block 405, since the strain gauge 406 and the magnetic injection pump connected to the injection pipe on the first magnetorheological fluid chamber 501 and the second magnetorheological fluid chamber 511 are electrically connected through the main controller, when the magnet block 405 falls onto the strain gauge 406, the change in gravity will cause the strain gauge 406 to send a signal to the main controller. At this time, the main controller will control the external magnetic injection pump to inject magnetorheological fluid into the first magnetorheological fluid chamber 501 and the second magnetorheological fluid chamber 511.

[0073] As magnetorheological fluid is added, the first magnetorheological fluid chamber 501 gradually fills with it. When an unauthorized individual attempts to pry open the chamber again, the falling magnet 405 will cause it and the magnetorheological fluid in the chamber to lie on the same plane. Due to the properties of the magnetorheological fluid, it exhibits low viscosity and Newtonian fluid characteristics with good fluidity when no magnetic field is applied. When an external magnetic field is applied, its viscosity increases rapidly within milliseconds, exhibiting solid-like properties and a sharp increase in yield stress. This transition from liquid to solid is reversible, and the process is continuous and controllable. This design increases the resistance during subsequent prying.

[0074] Furthermore, as magnetorheological fluid is added to the second magnetorheological fluid chamber 511, the magnetorheological fluid pushes the arc-shaped locking plate 512 to move within the second magnetorheological fluid chamber 511 and eventually inserts it into the inner frame 1, where it engages with the toothed plate 513, thus completing the addition of the locking structure.

[0075] Furthermore, this application, through the design of the resistance-added component 5, can effectively prevent criminals from being unable to effectively stop illegal intrusion when carrying out illegal prying, thus posing a serious threat to the security of the property in the vault. This design makes up for the insufficient anti-pry performance of the aforementioned documents and existing technologies, which passively accept prying. It can add resistance interference when the vault door 2 is pried, which is different from passively accepting prying and provides an active resistance mechanism.

[0076] Furthermore, this application, through the design of the arc-shaped latch plate 512, from a mechanical structure perspective, the arc surface can disperse the prying force, applying the prying force to a larger area, reducing the pressure per unit area, and increasing the resistance torque, so that criminals need to apply more force to turn the latch. At the same time, the outer end of the arc-shaped latch plate 512 is designed with a toothed groove shape, which cooperates with the toothed plate 513 to effectively prevent prying tools from prying it, increasing the difficulty of prying. In terms of anti-pry strategy, the smooth surface of the arc-shaped latch makes it easy for tools such as crowbars to slide, making it difficult for criminals to find a point of leverage. From the perspective of material utilization, the arc-shaped latch can better utilize the strength of the material, withstand greater stress without deformation or breakage, and also improve durability, reduce the possibility of local wear and damage, extend service life, and ensure that the vault door maintains a good anti-pry effect for a long time.

[0077] Furthermore, this application can use the force of illegal prying as a prerequisite for the operation of the subsequent resistance addition component 5, thereby indirectly causing the external magnetic injection pump of the device to work, causing the magnetorheological fluid to flow, and prompting the arc-shaped locking plate 512 to lock a second time. This setting is different from the existing fixed number of locking structures, and can increase the number of locking structures after prying. Moreover, this linkage design that can actively provide strong resistance to illegal prying when prying is detected enhances the immediacy of protection, shortens the time difference in responding to illegal intrusion, improves the reliability of protection, changes the passive situation with an active defense mechanism, and enhances the comprehensiveness of protection.

[0078] Please refer to the above work process. Figures 3 to 10 .

[0079] 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. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0080] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vault door designed to prevent unauthorized entry, comprising: The container includes an embedded frame (1), a door (2), and a locking module (3). The door (2) is hinged to the embedded frame (1) via a side wall. The locking module (3) is fixedly connected to the door (2) and is embedded in the embedded frame (1). The container is characterized by further including a monitoring feedback component (4) and a resistance enhancement component (5). The monitoring feedback component (4) and the resistance enhancement component (5) are located on the same vertical plane. The monitoring feedback component (4) is used to provide early warning of illegal prying and to activate the resistance enhancement component (5); The resistance enhancement component (5) is used to improve the safety performance of the door (2) by adding a locking mechanism and increasing the resistance of the detection rod (403) during movement; The monitoring feedback component (4) includes a transverse groove (401) fixedly connected to the inner cavity of the door (2). A spring A (402) is fixedly connected to the transverse groove (401). A detection rod (403) is fixedly connected to one end of the spring A (402). The two ends of the detection rod (403) are slidably connected to the transverse groove (401). The vertical sidewall of the detection rod (403) is flush with the sidewall of the door (2). A square cavity (404) is fixedly connected inside the door (2). A magnet (405) is provided at the top of the square cavity (404), and a strain gauge (406) is fixedly connected at the bottom of the square cavity (404). The resistance enhancement component (5) includes a first magnetorheological fluid chamber (501) fixedly connected to the inner cavity of the door (2). The transverse tank (401) is fixedly connected to the first magnetorheological fluid chamber (501). A pusher (502) is slidably connected in the first magnetorheological fluid chamber (501). One end of the pusher (502) away from the first magnetorheological fluid chamber (501) is fixedly connected to the detection rod (403). A spring B (503) is fixedly connected to the inner cavity of the first magnetorheological fluid chamber (501). One end of the spring B (503) away from the fixed part of the first magnetorheological fluid chamber (501) is fixedly connected to the pusher (502).

2. A vault door for preventing unauthorized prying according to claim 1, characterized in that: A vertical support member (504) is fixedly connected through the first magnetorheological fluid chamber (501) at equal intervals. A floating block (505) is vertically slidably connected to the bottom of the vertical support member (504). A spring-loaded vertical rod (506) is fixedly connected to the upper surface of the floating block (505). A notch is opened in the middle of the spring-loaded vertical rod (506). An oblique strip (507) is fixedly connected to the notch in the middle of the spring-loaded vertical rod (506).

3. A vault door for preventing unauthorized prying according to claim 2, characterized in that: A horizontal column (508) is movably inserted into the vertical support (504), and an oblique groove (509) is opened on the horizontal column (508). The oblique strip (507) is slidably adapted to the oblique groove (509), and a limiting piece (510) is fixedly connected to one end of the horizontal column (508).

4. A vault door for preventing unauthorized prying according to claim 1, characterized in that: A second magnetorheological fluid chamber (511) is fixedly connected to one side wall of the square cavity (404). An arc-shaped locking piece (512) is slidably connected inside the second magnetorheological fluid chamber (511). A plug-in groove is opened inside the inner frame (1). A toothed piece (513) is fixedly connected in the plug-in groove of the inner frame (1). The arc-shaped locking piece (512) can be plugged into the plug-in groove.

5. A vault door for preventing unauthorized prying according to claim 1, characterized in that: Both the first magnetorheological fluid chamber (501) and the second magnetorheological fluid chamber (511) are connected to a filling pipe, which is connected to a magnetic filling pump.

6. A vault door for preventing unauthorized prying according to claim 4, characterized in that: The arc-shaped locking piece (512) is arc-shaped, and the outer end of the arc-shaped locking piece (512) is designed as a toothed groove.

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