Vault safety door with four-lock three-linkage mechanism system

Abstract

The invention discloses a vault safety door with a four-lock three-linkage mechanism system, relates to the technical field of vault safety doors, is based on an operation mechanism of the vault safety door, takes a mechanical structure matched with lock bodies as a main body, but has the difference that an interlocking assembly is formed by two lock bodies; a first connecting rod, a second connecting rod and a main connecting rod are matched with a T-shaped movable plate to form a combined movement structure, and during operation, the two lock bodies are mutually combined to form an authorization mode which is essentially characterized by comprising a three-out-of-four selection mode or a total selection mode. Wherein in the three-out-of-four selection mode, any three of two second-level lock bodies and one first-level lock body are randomly selected to be matched to complete authentication and authorization so as to achieve the door opening action, and compared with the technical characteristics of a current safety door, the vault safety door has the advantage that the safety performance of the overall structure is improved through randomness.

Description

Technical Field

[0001] The invention relates to the technical field of safe deposit box safety doors, and in particular to a safe deposit box safety door with a four-lock three-linkage mechanism system. Background Art

[0002] The design of the safe door should meet multiple technical requirements and safety standards to ensure the safety of valuables and funds. First of all, its structure needs to meet the characteristics of fire prevention, waterproofness, and smoke prevention. Secondly, the key lies in the high security performance of the lock body structure. Specifically, biometric recognition (fingerprint, voiceprint, iris, face, etc.) technology can be used to improve recognition accuracy and security. The ultimate goal is to control the action of the lock body structure inside the safe door. The lock body structure inside the safe door can only be opened after passing the authentication and authorization. Please refer to the relevant content mentioned in the publication numbers CN111080874A and CN111080873A.

[0003] However, it should be noted that the focus of conventional safe doors is on identification technology, and the internal lock body structure is relatively simple. Its essence lies in that it relies heavily on identification technology. When one of the identification technologies is "broken", the authentication authorization is directly obtained, resulting in the safe doors of the safes in actual situations still having security risks. This application proposes a solution to this problem. Summary of the invention

[0004] The purpose of the present invention is to provide a safe deposit box security door with a four-lock three-linkage mechanism system, because the conventional safe deposit box security door focuses on the identification technology therein and ignores the internal lock body structure. The overall lock body structure has a relatively simple action, and the safe deposit box door can be opened after passing an authentication authorization, resulting in a lack of safety performance of the safe deposit box security door.

[0005] The purpose of the present invention can be achieved through the following technical solutions: A safe deposit box security door with a four-lock three-linkage mechanism system, comprising a door body and a toothed disc locking assembly, wherein an interlocking assembly and a card strip seat are arranged at a position of the door body corresponding to the toothed disc locking assembly, and the interlocking assembly comprises a primary lock body, three secondary lock bodies, a first connecting rod, a second connecting rod, a total connecting rod, a T-shaped movable plate and an movable card strip;

[0006] The two ends of the first connecting rod are respectively arranged on the lock tongue positions of the first-level lock body and one of the second-level lock bodies, the two ends of the second connecting rod are respectively arranged on the lock tongue positions of the other two second-level lock bodies, the two ends of the total connecting rod are respectively arranged on the first connecting rod and the second connecting rod, the setting position of the T-shaped movable plate corresponds to the movable clamping strip and the total connecting rod, and the setting position of the clamping strip seat corresponds to the movable clamping strip.

[0007] It is further configured as follows: the upper side portion of one end position of the movable clamping strip corresponding to the clamping strip seat is configured as a wedge-shaped notch, and the other end position of the movable clamping strip is configured as a coordination fulcrum and a rotation fulcrum along the direction from top to bottom respectively.

[0008] It is further configured as follows: the movable card strip is rotationally connected to the door body through a matching fulcrum, an action slide groove is opened at the position of the T-shaped movable plate corresponding to the rotation fulcrum, and a steering pin column is installed at the position of the movable card strip corresponding to the action slide groove.

[0009] It is further configured as follows: an action pin is installed at the lock tongue position in the primary lock body and the secondary lock body, and a compensation slide groove corresponding to the action pin is opened at the two end positions of the first connecting rod and the second connecting rod.

[0010] It is further configured as follows: a horizontally arranged coordination groove is provided at the other end of the T-shaped movable plate, a directional pin corresponding to the coordination groove is installed on the door body, and the T-shaped movable plate is slidably connected on the door body along the movement direction of the lock tongue in the primary lock body and the secondary lock body through the coordination groove and the directional pin.

[0011] It is further configured that: the local position between the main link corresponding to the first link and the second link and the T-shaped movable plate is rotatably connected, and the rotation point position of the main link and the T-shaped movable plate is set as a forced fulcrum.

[0012] It is further configured as follows: the first link and the second link are bent in a direction close to the movable clamping strip, and the bending points of the first link and the second link are rotationally connected to the two end positions of the main link.

[0013] It is further configured that: during the operation of the safe door, a control assembly associated with the interlock assembly is provided, and the primary lock body and the secondary lock body are set to use the following method through the control assembly:

[0014] Method 1: When the primary lock body and the three secondary lock bodies are all in the starting state, and the lock tongues are synchronously in the reset state, the first link, the second link and the main link move horizontally away from the active card strip at the same time, and the active card strip rotates clockwise with the matching fulcrum as the turning point through the T-shaped active plate, and completes the door opening action through the gear plate locking assembly;

[0015] Method 2: The control assembly adopts a four-choice-three selection method for the primary lock body and the secondary lock body, including selecting the primary lock body and two of the secondary lock bodies, selecting three lock bodies, and performing corresponding angle deflection actions among the first link, the second link and the total link, and completing the door opening action through the gear plate locking assembly.

[0016] The present invention has the following beneficial effects:

[0017] 1. The operation mechanism of the safe door in the present invention is basically the same as that of the conventional structure, and the mechanical structure is matched with the lock body to form an integrated structure. However, there is a difference in that the safety technology of the safe door proposed in the present invention is mainly reflected in the interlocking assembly formed by two lock bodies, and a combined motion structure is formed by a connecting rod, a second connecting rod, and a total connecting rod in conjunction with a T-shaped movable plate. Specifically, the primary lock body is used as a random working position, and the three secondary lock bodies are used as random working positions. During the normal use of the primary lock body, it is necessary to ensure that at least two secondary lock bodies are in a synchronous operating state to complete the authentication authorization and the door opening action;

[0018] 2. In combination with the above content, it is explained that the safe deposit door proposed in the present invention is significantly different from the conventional structure in that it is random. During the specific operation, the secondary lock body and the primary lock body in three different positions are randomly selected to cooperate with each other. In this way, in the event of an accident, even after one of the identification technologies is "broken", the randomness in the overall interlocking assembly prolongs the "breaking time", thereby indirectly improving the safety performance of the safe deposit door. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 creative work.

[0020] Figure 1 This is a schematic diagram of the structure of a safe door with a four-lock three-linkage mechanism system proposed by the present invention;

[0021] Figure 2 This is a rear view of a safe door with a four-lock three-linkage mechanism system proposed by the present invention;

[0022] Figure 3 This is a structural schematic diagram of a central interlock assembly of a safe door with a four-lock three-linkage mechanism system proposed by the present invention;

[0023] Figure 4 The invention proposes a safe door with a four-lock three-linkage mechanism system. Figure 3 A front view of

[0024] Figure 5 The invention proposes a safe door with a four-lock three-linkage mechanism system. Figure 3 Split diagram of ;

[0025] Figure 6The invention proposes a safe door with a four-lock three-linkage mechanism system. Figure 3 Schematic diagram of the working position.

[0026] In the figure: 1. door body; 2. gear lock assembly; 3. primary lock body; 4. secondary lock body; 5. primary connecting rod; 6. clamping bar seat; 7. movable clamping bar; 8. T-shaped movable plate; 9. total connecting rod; 10. secondary connecting rod; 11. coordination slide; 12. compensation slide; 13. action slide. DETAILED DESCRIPTION

[0027] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Embodiment 1: For the current safe door structure, its essence is particularly reflected in various identification technologies. Taking fingerprint, voiceprint, iris, face and other biometric identification technologies as an example, the lock body structure inside the safe door can be opened only after authentication and authorization. However, its disadvantages are: it relies heavily on identification technology. When one of the identification technologies is "broken", authentication and authorization are directly obtained, resulting in the safe door in the actual situation still having security risks. The overall lock body structure has a relatively single action. The safe door can be opened after one authentication and authorization is passed, resulting in the lack of security performance of the safe door. The following technical description is proposed for this:

[0029] Reference Figures 1 to 6 In this embodiment, a safe deposit box security door with a four-lock mechanism system includes a door body 1 and a toothed disc locking assembly 2. An interlocking assembly and a card strip seat 6 are arranged at a position of the door body 1 corresponding to the toothed disc locking assembly 2. The interlocking assembly includes a primary lock body 3, three secondary lock bodies 4, a connecting rod 5, a second connecting rod 10, a total connecting rod 9, a T-shaped movable plate 8 and an movable card strip 7;

[0030] The two ends of the first connecting rod 5 are respectively arranged on the lock tongue positions of the first-level lock body 3 and one of the second-level lock bodies 4, the two ends of the second connecting rod 10 are respectively arranged on the lock tongue positions of the other two second-level lock bodies 4, the two ends of the total connecting rod 9 are respectively arranged on the first connecting rod 5 and the second connecting rod 10, the setting position of the T-shaped movable plate 8 corresponds to the movable clamping strip 7 and the total connecting rod 9, the setting position of the clamping strip seat 6 corresponds to the movable clamping strip 7, the upper side part of one end position of the movable clamping strip 7 corresponding to the clamping strip seat 6 is set as a wedge-shaped notch, and the other end position of the movable clamping strip 7 is respectively set as a coordination fulcrum and a rotation fulcrum in the direction from top to bottom.

[0031] Basic principle: The overall structure is similar to the operating principle of the conventional safe door structure. The essence of the gear lock assembly 2 is to drive the card bar seat 6 to move horizontally through the gear structure. Figure 4 For example, when the active card strip 7 is completely stuck on the card strip seat 6, the card strip seat 6 cannot move horizontally, but when the active card strip 7 deflects downward until it is separated from the card strip seat 6, the card strip seat 6 can move horizontally, thereby completing the door opening action. The specific process is not described in detail in this embodiment;

[0032] It should be noted that: compared with the conventional safe security door, an interlocking assembly is provided in the present embodiment. The essence of the interlocking assembly is composed of a primary lock body 3 and three secondary lock bodies 4. The primary lock body 3 and the secondary lock body 4 only represent the lock body characteristics, and do not specifically limit the types. For example, the primary lock body 3 is an electric lock and the secondary lock body 4 is a password lock. In combination with the above, it can be understood that: if the door opening action is to be realized, the active card strip 7 needs to be deflected downward. The key content of the present invention is that the interlocking assembly cooperates with the first connecting rod 5, the second connecting rod 10 and the total connecting rod 9 to centrally control the active card strip 7.

[0033] Embodiment 2: This embodiment describes the relevant mechanical structure of the interlocking assembly:

[0034] The movable card strip 7 is rotatably connected to the door body 1 through the coordination fulcrum, an action slide groove 13 is provided at the position of the T-shaped movable plate 8 corresponding to the rotation fulcrum, a steering pin is installed at the position of the movable card strip 7 corresponding to the action slide groove 13, an action pin is installed at the position of the lock tongue in the primary lock body 3 and the secondary lock body 4, a compensation slide groove 12 corresponding to the action pin is provided at both ends of the first link 5 and the second link 10, a horizontally arranged coordination slide groove 11 is provided at the other end of the T-shaped movable plate 8, and a fixed position corresponding to the coordination slide groove 11 is installed on the door body 1 The directional pin and the T-shaped movable plate 8 are slidably connected on the door body 1 along the movement direction of the lock tongue in the primary lock body 3 and the secondary lock body 4 through the coordinated sliding groove 11 and the directional pin. The local position between the main connecting rod 9 corresponding to the first connecting rod 5 and the second connecting rod 10 and the T-shaped movable plate 8 is rotationally connected, and the rotation point position of the main connecting rod 9 and the T-shaped movable plate 8 is set as a forced fulcrum, the first connecting rod 5 and the second connecting rod 10 are bent in the direction close to the movable card strip 7, and the bending point position of the first connecting rod 5 and the second connecting rod 10 is rotationally connected to the two end positions of the main connecting rod 9.

[0035] Solution Description: First refer to Figure 5 and Figure 6The movement form of the movable card strip 7 is explained as follows: the essence of the movable card strip 7 is to rotate at the relevant position on the door body 1, specifically, the movable card strip 7 uses the matching fulcrum as the turning point, but the movable card strip 7 does not have the ability to rotate, and specifically relies on the T-shaped movable plate 8. When the T-shaped movable plate 8 moves horizontally in the direction away from the card strip seat 6, the action slide groove 13 corresponding to the rotation fulcrum position on the T-shaped movable plate 8 forces the movable card strip 7 to move to the left, and finally, under the restriction of the matching fulcrum, it can only drive the card strip 7 to rotate clockwise;

[0036] Refer again Figure 5 Explanation: The first and second connecting rods 5 and 10 are provided with compensating slots 12 corresponding to the action pins at both ends, the other end of the T-shaped movable plate 8 is provided with a horizontally arranged coordinated slot 11, and the door body 1 is provided with a directional pin corresponding to the coordinated slot 11. Figure 4 It can be understood that the diameter of the compensating groove 12 is larger than the outer diameter of the action pin, and the diameter of the coordinating groove 11 is also larger than the diameter of the directional pin. The purpose is to provide an adjustable range of motion in the rotational action between the first connecting rod 5, the second connecting rod 10, and the total connecting rod 9 to avoid motion interference.

[0037] Embodiment 3: This embodiment is combined with Embodiment 1 and Embodiment 2 to explain the operation process of the overall structure:

[0038] During the operation of the safe door, a control assembly with an associated interlock assembly is provided. The primary lock body 3 and the secondary lock body 4 are set to use as follows through the control assembly:

[0039] Method 1: When the primary lock body 3 and the three secondary lock bodies 4 are all in the starting state, and the lock tongues are synchronously in the reset state, the first link 5, the second link 10 and the total link 9 move horizontally away from the movable card strip 7 at the same time, and the movable card strip 7 rotates clockwise with the matching fulcrum as the turning point through the T-shaped movable plate 8, and completes the door opening action through the gear plate locking assembly 2;

[0040] Method 2: The control assembly adopts a four-out-three selection method for the primary lock body 3 and the secondary lock body 4, which includes selecting the primary lock body 3 and two of the secondary lock bodies 4, and selecting three lock bodies 4, and performing corresponding angular deflection actions among the first connecting rod 5, the second connecting rod 10 and the total connecting rod 9, and completing the door opening action through the gear locking assembly 2.

[0041] The safe door is equipped with a relevant control system. In this embodiment, the control assembly is taken as an example. First, the types of the primary lock body 3 and the secondary lock body 4 described in the present invention are not limited, including mechanical locks or various biological spiritual locks. The essence is that the unlocking methods of the primary lock body 3 and the secondary lock body 4 are different. There are four lock bodies in the present invention, so there are four unlocking methods. From a safety perspective, the four unlocking methods are mastered by four people respectively, which is manifested as: the four lock bodies are controlled by four responsible persons, and each responsible person has an authorization authentication method for the corresponding lock body, which is specifically controlled by randomness. In combination with the above-mentioned related content, it is explained as follows:

[0042] S1: The action method described in method 1 is that all four lock bodies are opened. This method is relatively theoretical. The primary lock body 3 and three secondary lock bodies 4 are selected at the same time, so four responsible persons are required to be present at the same time. When the primary lock body 3 and the secondary lock body 4 are opened at the same time, refer to Figure 4 Explanation: Because the lock tongues in the primary lock body 3 and the three secondary lock bodies 4 are reset to the left at the same time, the first link 5, the second link 10 and the total link 9 will also move to the left at the same time. Figure 6 , the T-shaped movable plate 8 can move to the left in a completely horizontal direction, because the movable card strip 7 is subjected to the "forced limit" effect from the rotating fulcrum and rotates clockwise. This method is the most realistic and ideal state;

[0043] S2: Combined with the control assembly again to randomly select the secondary lock body 4, combined with Figure 4 Description: The three secondary lock bodies 4 are numbered 1, 2, and 3 from top to bottom, and the following working contents are set:

[0044] S2-1: If the secondary lock bodies 4 and the primary lock body 3 of number 1 and number 2 are selected, because the lock tongues of the primary lock body 3 and the secondary lock body 4 of number 1 are reset to the left at the same time, the total link 9 rotates counterclockwise with the forced fulcrum as the center of the circle. In essence, there is motion interference at the lower end of the total link 9. In this regard, the lock tongue in the secondary lock body 4 of number 2 is reset to the left. However, because there is also a compensating groove in the second link 10, it can be understood that: the first link 5 can move horizontally in a completely horizontal direction, but the second link 10 is difficult to maintain horizontal movement, but is relatively The lower end position of the total link 6 is deflected. In order to drive the total link 9 to move, one of the links 5 will make a supplementary movement in the vertical direction through its supplementary chute. Similarly, the second link 10 will also make a small supplementary movement. Finally, the total link 9 is supplemented by the first link 5 and the second link 10. It can be understood that the ultimate goal is to drive the T-shaped movable plate 8 to move to the left. However, there is a difference: the T-shaped movable plate 8 will also move adaptively under the action of the total link 9. In essence, the T-shaped movable plate 8 will move to the left, but the moving direction is not completely in the horizontal direction.

[0045] S2-2: If the secondary lock bodies 4 and the primary lock body 1 of No. 2 and No. 3 are selected, the essence is that the two connecting rods 10 can move to the left in the horizontal direction, and the first connecting rod 5 needs to make a compensatory movement for this. Finally, the adaptive movement of the T-shaped movable plate 8 is driven by the supplementary movement process of the first connecting rod 5 and the total connecting rod 9. In essence, the T-shaped movable plate 8 will move to the left, but the movement direction is not completely in the horizontal direction;

[0046] S2-3: If the secondary lock bodies 4 with numbers 1 and 3 are selected in conjunction with the primary lock body 3, there is a difference from S2-1 and S2-2. In essence, the first link 5 will still move in the horizontal direction, while the second link 10 cannot maintain horizontal movement. However, the ultimate goal is similar to that in S2-1, and the T-shaped movable plate 8 is driven to move to the left by compensating movement to complete the door opening action.

[0047] S2-4: The difference from the above S2-1 to S2-3 is that the three secondary lock bodies 4 are selected at the same time, but the primary lock body 3 is not selected. This method is obviously different from the above S2-1 in that: the second connecting rod 10 will only move horizontally to the left, and the first connecting rod 5 will only move its lower end to the left, but it is restricted by the total connecting rod 9, so it can be understood that: the compensation groove 12 at the upper end of the first connecting rod 5 compensates the first connecting rod 5 again, and finally it is similar to S2-1 in that: the total connecting rod 9 still has a tendency to move to the left, and then drives the active card bar 7 to deflect clockwise through the coordination fulcrum and the rotation fulcrum.

[0048] In summary: based on the operating mechanism of the safe security door, the mechanical structure is matched with the lock body as the main body, but there is a difference in that: it is composed of two lock bodies to form an interlocking assembly, and a connecting rod, two connecting rods, and a total connecting rod cooperate with a T-shaped movable plate to form a combined motion structure. During operation, the two lock bodies are combined with each other to form an authorization method. Its essence lies in: it includes a four-choice three selection method or a full selection method, among which the four-choice three selection method randomly selects two of the secondary lock bodies to cooperate with the primary lock body to complete the authentication authorization and thus realize the door opening action. Compared with the technical characteristics of the current security door, the safe security door in the present invention improves the safety performance of the overall structure through randomness.

[0049] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0051] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A safe deposit box door with a four-lock three-linkage mechanism system, comprising a door body (1) and a toothed disc locking assembly (2), characterized in that: An interlocking assembly and a clamping strip seat (6) are arranged at a position of the door body (1) corresponding to the toothed disc locking assembly (2), and the interlocking assembly comprises a primary lock body (3), three secondary lock bodies (4), a connecting rod (5), a second connecting rod (10), a main connecting rod (9), a T-shaped movable plate (8) and a movable clamping strip (7); The two ends of the first connecting rod (5) are respectively arranged on the lock tongue positions of the first lock body (3) and one of the second lock bodies (4); the two ends of the second connecting rod (10) are respectively arranged on the lock tongue positions of the other two second lock bodies (4); the two ends of the total connecting rod (9) are respectively arranged on the first connecting rod (5) and the second connecting rod (10); the setting position of the T-shaped movable plate (8) corresponds to the movable clamping strip (7) and the total connecting rod (9); and the setting position of the clamping strip seat (6) corresponds to the movable clamping strip (7).

2. A safe door with a four-lock three-linkage mechanism system according to claim 1, characterized in that: The upper part of one end of the movable clamping strip (7) corresponding to the clamping strip seat (6) is set as a wedge-shaped notch, and the other end of the movable clamping strip (7) is respectively set as a coordination fulcrum and a rotation fulcrum in the direction from top to bottom.

3. A safe door with a four-lock three-linkage mechanism system according to claim 2, characterized in that: The movable clamping strip (7) is rotatably connected to the door body (1) via a coordinated fulcrum, an action slide groove (13) is provided at a position of the T-shaped movable plate (8) corresponding to the rotation fulcrum, and a steering pin column is installed at a position of the movable clamping strip (7) corresponding to the action slide groove (13).

4. The safe door with four-lock and three-link mechanism system according to claim 1, characterized in that: An action pin is installed at the lock tongue position in the primary lock body (3) and the secondary lock body (4), and a compensation slide groove (12) corresponding to the action pin is opened at the two end positions of the first link rod (5) and the second link rod (10).

5. The safe door with four-lock and three-link mechanism system according to claim 1, characterized in that: A horizontally arranged coordinating groove (11) is provided at the other end of the T-shaped movable plate (8), and a directional pin corresponding to the coordinating groove (11) is installed on the door body (1). The T-shaped movable plate (8) is slidably connected to the door body (1) along the movement direction of the lock tongues in the primary lock body (3) and the secondary lock body (4) via the coordinating groove (11) and the directional pin.

6. The safe door with four-lock and three-link mechanism system according to claim 1, characterized in that: The total link (9) is rotatably connected to the T-shaped movable plate (8) at a local position between the first link (5) and the second link (10), and the rotation point position of the total link (9) and the T-shaped movable plate (8) is set as a forced fulcrum.

7. A safe door with a four-lock three-linkage mechanism system according to claim 6, characterized in that: The first connecting rod (5) and the second connecting rod (10) are bent in a direction close to the movable clamping strip (7), and the bending points of the first connecting rod (5) and the second connecting rod (10) are rotationally connected to the two end positions of the main connecting rod (9).

8. A safe door with a four-lock three-linkage mechanism system according to any one of claims 1 to 7, characterized in that: During operation, the safe door is provided with a control assembly associated with an interlocking assembly, and the primary lock body (3) and the secondary lock body (4) are set to use in the following manner through the control assembly: Method 1: When the primary lock body (3) and the three secondary lock bodies (4) are all in the starting state, and the lock tongues therein are synchronously in the reset state, the first link (5), the second link (10) and the main link (9) simultaneously move horizontally in a direction away from the movable clamping strip (7), and the movable clamping strip (7) rotates clockwise with the matching fulcrum as the turning point through the T-shaped movable plate (8), and completes the door opening action through the toothed disc locking assembly (2); Method 2: A control assembly adopts a four-choice three selection method for the primary lock body (3) and the secondary lock body (4), including a selection method of selecting the primary lock body (3) and two of the secondary lock bodies (4), and selecting three lock bodies (4), and performing corresponding angular deflection actions among the first connecting rod (5), the second connecting rod (10) and the total connecting rod (9), and completing the door opening action through the toothed disc locking assembly (2).

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