A three-opening two-lock assembly and a vault door locking mechanism

Abstract

The present invention relates to a three-opening, two-opening lock assembly, characterized by: an unlocking slide having a rack portion; an unlocking disk capable of rotating about its own axis; an unlocking gear fixed to the unlocking disk and in transmission engagement with the rack portion; three arc-shaped locking plates spaced circumferentially around the outer circumference of the unlocking disk, each locking plate having a raised blocking portion on the outside of the free end; three locks having locking tongues that can extend inward and outward, each locking tongue corresponding to a blocking portion on a locking plate, the outwardly extending locking tongues being able to block the blocking portion; three drive plates constrained on the unlocking disk to be radially retractable; the rotation of the unlocking disk can cause the drive plates to be pressed by the locked locking plates and retract radially inward. This lock can achieve a three-opening, two-opening function, and the lock can be an electronic lock. The present invention also relates to a safe door locking mechanism having the aforementioned lock assembly.

Description

Technical Field

[0001] The present invention relates to a locking mechanism for a safe door, in particular to a three-opening two-lock assembly suitable for a safe door. The present invention also relates to a locking mechanism for a safe door. Background Art

[0002] Existing locks typically have only one lockset, requiring a key, password, or fingerprint to open. Some safes also have an emergency mechanical lock. If the user forgets the password or the electronic combination lock is damaged and can't open the safe, they can use it as an emergency lock. Insert the emergency key, turn the emergency mechanical lock, and the emergency paddle connected to the emergency mechanical lock cylinder rotates a certain angle. The emergency paddle moves the solenoid valve core controlled by the electronic combination lock, mechanically opening the electronic combination lock and achieving the purpose of emergency opening.

[0003] However, in any case, only one key or the correct password is needed to open the door, which reduces the security factor. To increase the security factor of the lock, current financial security products, such as safe doors and vault doors, use three-lock, two-open locks. These locks are installed on the vault door. At least two of the locks can be opened to open the vault door. Of course, all three locks can be opened at the same time. Even if one lock malfunctions, the door can still be opened.

[0004] For example, a Chinese utility model patent "A vault door opening device" with patent number ZL201020173051.1 (publication number CN201705051U) discloses a three-lock, two-open lock, including a block fixed on the vault door bolt, a crank movably hinged on the vault door leaf, one end of the crank is a top arm that contacts and abuts against the block, and the other end of the crank is movably connected to a connecting arm, and the other end of the connecting arm is also movably connected to two pull rods. Three locks are arranged side by side from top to bottom on the door leaf, and the locking arms of adjacent locks are connected by a connecting rod. The two connecting rods used to connect the locking arms of the three locks are also movably hinged, and the locking arm of the middle lock is also correspondingly connected to the hinge point of the two connecting rods, and the other ends of the two pull rods are correspondingly movably connected to the middle position of the two connecting rods.

[0005] However, the crank in the aforementioned lock is connected to each lock arm through a connecting rod. The lock needs to drive the crank to move, which requires a large opening force. For this reason, only mechanical locks can be selected, and electronic locks are not suitable. Summary of the Invention

[0006] The first technical problem to be solved by the present invention is to provide a safe door three-lock two-mechanism assembly with a more reasonable structural design and suitable for electronic locks in response to the above-mentioned existing technical status.

[0007] The technical solution adopted by the present invention to solve the above technical problems is: a three-opening two-lock assembly, characterized in that: it includes an unlocking slide, which is constrained by the back of the door panel and can slide down along the door panel, and the unlocking slide is provided with a rack portion; the unlocking disk is arranged on the back of the door panel and can rotate around its own axis; the unlocking gear is fixed on the unlocking disk and is in transmission meshing with the rack portion; three arc-shaped locking plates are arranged at intervals along the circumference around the outer circumference of the unlocking disk, the fixed end of the locking plate is adjacent to the free end of the adjacent upper locking plate, the fixed end of the locking plate is hinged to the back of the door panel through a pin shaft, and the free end of the locking plate is kept by the action of a tension spring to swing towards the unlocking disk, so that the inner arc surface of the locking plate gradually approaches the unlocking disk from the fixed end toward the free end, and the free end of each locking plate has a raised resistance on the outside. The locking plate is unlocked and the door is unlocked, and the rotation of the unlocking plate can cause the driving plate to be pressed by the locked locking plate and retract radially inward.

[0008] A further improvement is that the locking plate is provided with an arcuate guide groove, and the outer end of the drive plate is provided with a drive wheel positioned within the guide groove and capable of rotating about its own axis. The provision of the guide groove connects the drive plate and the locking plate in a radial direction, ensuring a more secure overall structure. The rotation of the drive plate can better propel the locking plate to swing radially outward or inward, providing a more precise fit between the drive plate and the locking plate. The provision of the drive wheel also reduces friction between the locking plate and the drive plate, allowing the drive plate to swing more easily relative to the locking plate.

[0009] Preferably, in the initial state, the driving wheels on each driving plate are located in the guide groove near the fixed end of the locking plate. This ensures that in the initial position, i.e., the generally locked position, the locking plate is radially retracted, facilitating locking, and the locking tongue is not subjected to force, thereby preventing damage to the locking tongue.

[0010] The locking plate cannot be too thin, otherwise it will be insufficient in strength and the locking area with the lock tongue will be small. The locking plate cannot be too thick, otherwise it will be too thick and heavy, and the cost will be high. To this end, further improvements are made, the locking plate is composed of a bottom plate and a top plate spaced apart from each other, one end of the bottom plate and the top plate are connected together by a pin, and the other end of the bottom plate and the top plate are connected together by a connecting pin. One end of the tension spring is mounted on the pin, and the other end of the tension spring is mounted on the connecting pin. The guide groove is provided on one of the bottom plate and the top plate. The outer end of the drive plate is also provided with a drive wheel that can rotate about its own axis. The drive wheel interferes with the inner curved surface of the bottom plate or the top plate without the guide groove. The locking plate is composed of two plates spaced apart from each other. The thickness of each plate is relatively thin, and the overall thickness is increased after the assembly, and it is not thick and heavy. In addition, it is convenient to connect the tension spring. The tension spring is placed between the two plates and does not occupy additional space in the height direction.

[0011] As a further improvement, the unlocking disk is composed of a bottom disk body and a top disk body spaced apart from each other, the bottom disk body and the top disk body being fixed together, the driving plate being arranged between the bottom disk body and the top disk body, the driving plate being provided with a radially arranged guide groove, the top disk body or the bottom disk body being provided with a guide wheel placed in the guide groove and capable of rotating around its own axis, the top disk body or the bottom disk body being provided with a radially arranged driving groove, the driving plate being provided with a driving wheel placed in the driving groove and capable of rotating around its own axis. The aforementioned unlocking disk structure facilitates placing the driving plate between the bottom disk body and the top disk body, forming a better constraint on the driving plate, the cooperation between the guide groove and the guide wheel reduces the friction force on the driving plate when radially moving relative to the unlocking disk, making the driving plate move more easily, the cooperation between the driving groove and the driving wheel enables the rotation of the unlocking disk to better drive the rotation of the driving plate, and also reduces the friction force on the driving plate when radially moving relative to the unlocking disk, making the driving plate move more easily.

[0012] To facilitate assembly, a mounting base is fixed to the back of the door panel. The mounting base consists of a bottom base plate and a top base plate spaced apart from each other. The bottom base plate and the top base plate are fixed together and fixed to the back of the door panel. The unlocking plate and locking plate are both located between the bottom base plate and the top base plate, and the unlocking gear is exposed upward from the top base plate. This allows the various components to be pre-assembled on the mounting base to form a separate module. During assembly, this module can be fixed to the back of the door panel, facilitating assembly.

[0013] Compared with the existing technology, the advantages of this lock assembly are:

[0014] When all the locks are in the locked state, the free ends of the locking plates cannot swing away from the unlocking disk, so that the inner arc surface of the locking plate gradually approaches the unlocking disk from the fixed end toward the free end. Because the inner ends of the driving plates abut against each other, the outer ends of the driving plates radially extend outward and abut against the inner arc surface of the locking plates, and the driving plates cannot rotate along the fixed end toward the free end, that is, the unlocking gear fixed on the unlocking disk is locked, and the unlocking slide plate and the unlocking gear are engaged with a gear rack transmission, so the unlocking slide plate cannot slide downward under external force.

[0015] When the first and second locks are unlocked, the second lock is in a locked state, and the inner arc surface of the locking plate corresponding to the locked lock gradually approaches the unlocking disk from the fixed end toward the free end. As the driving plate rotates with the unlocking disk, the driving plate retracts radially inwardly under the resistance of the inner arc surface of the locking plate. The radial inward contraction of the driving plate pushes the other two driving plates to further extend radially outward. The rotation of the unlocking disk can cause the driving plate to push the free end of the unlocked locking plate to swing away from the unlocking disk, that is, the rotation of the unlocking gear and the unlocking disk will not be locked by the locking plate. The unlocking slide slides downward under the drive of external force, driving the unlocking gear to slide, and the unlocking disk also rotates accordingly, and finally the unlocking slide can move downward under the drive of external force.

[0016] If all three locks are in the unlocked state, the rotation of the unlocking gear and the unlocking disk will not be locked by the locking plate, and the unlocking slide plate can move downward under the drive of external force.

[0017] This lock can realize the three-open-two function, that is, at least two of the three locks need to be opened before the unlocking slide can move downward under the drive of external force, which has high security. Each lock can block the blocking part of the locking plate through the outward-extending lock tongue to complete the locking, and the lock tongue is not directly connected to the unlocking slide. That is, the extension and retraction of the lock tongue of the lock does not directly drive the unlocking slide to move, and the extension and retraction of the lock tongue of the lock does not require a large force. For this reason, the lock in this structure can adopt an electronic lock, which provides the possibility of realizing sealing or fingerprint opening of the lock.

[0018] The second technical problem to be solved by the present invention is to provide a safe door locking mechanism with a more reasonable structural design and the aforementioned three-opening two-lock device in response to the above-mentioned existing technical status.

[0019] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a locking mechanism for a safe door, including a main slide, which is constrained on the back of the door panel and can slide back and forth along the door panel; it is characterized in that: it also includes the aforementioned safe door three-lock two-lock assembly; a locking block, which is constrained on the back of the door panel and can slide down along the door panel, the locking block can form a block for the main slide to prevent the main slide from moving backward and unlocking, the unlocking slide is connected to the locking block to drive the locking block to slide up and down; a driving structure is used to drive the unlocking slide to slide up and down.

[0020] A further improvement is that a receptacle is fixed to the back of the door panel, and the locking block is constrained within the receptacle. A spring is installed within the receptacle to maintain the upward movement of the locking block. When in the upward position, the locking block blocks the main slide. The receptacle provides a suitable mounting position for the locking block. Furthermore, the spring keeps the locking block extended, providing better resistance to the main slide and providing additional resistance to the downward movement of the unlocking slide, thus enhancing the feel of the unlocking slide.

[0021] As a structural method for driving the unlocking slide, the aforementioned drive structure includes a drive plate mounted on the back of the door panel and driven for rotation by a drive handle. The drive plate is provided with a first driving post, and the unlocking slide is provided with a first drive slot arranged in the left-right direction for insertion of the first driving post. The first driving slot comprises a transverse slot portion and a transverse arcuate slot portion that are interconnected. The first driving post drives the unlocking slide upward or downward during movement of the transverse slot portion. When the first driving post slides in the transverse arcuate slot portion, i.e., when the drive plate rotates during this process, it does not drive the unlocking slide left-right movement.

[0022] As a further improvement, the above-mentioned driving disk is also provided with a second driving column, and the main slide is provided with a second driving groove arranged in the up and down directions for the insertion of the second driving column, the second driving groove has a vertical groove portion and a vertical arc groove portion that are interconnected. In the initial stage of opening the door, the second driving column slides along the vertical arc groove portion and cannot drive the main slide to move. In the later stage of opening the door, the second driving column is located in the vertical groove portion, and the rotation of the driving disk can drive the main slide to move. When the second driving column is located in the longitudinal arc groove, the first driving column is located in the transverse groove, so that the further rotation of the driving plate drives the locking block to move up with the unlocking slide, and the main slide no longer moves right, and the locking block blocks the main slide.

[0023] Compared with the existing technology, the advantages of this safe door locking mechanism are: the unlocking slide in the lock in this locking mechanism is connected to the locking block, and the up and down movement of the unlocking slide drives the locking block to move up and down, thereby locking or unlocking the main slide, and the three-open-two lock assembly can realize the three-open-two function, that is, at least two of the three locks need to be opened to make the unlocking slide move downward under the drive of external force, which has high security. Each lock can block the blocking part on the locking plate through the outward-extending lock tongue to complete the locking, and the lock tongue is not directly connected to the unlocking slide, that is, the extension and retraction of the lock tongue of the lock does not directly drive the unlocking slide to move, and the extension and retraction of the lock tongue of the lock does not require a large force. For this reason, the lock in this structure can adopt an electronic lock, which provides the possibility of sealing or fingerprint opening the lock. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic structural diagram of an embodiment of the lock assembly;

[0025] Figure 2 This is a structural diagram of the lock assembly embodiment after removing the unlocking slide;

[0026] Figure 3 This is a schematic diagram of the structure of the lock assembly embodiment after removing the unlocking slide, top base plate, and top disk.

[0027] Figure 4 This is a schematic structural diagram of the lock assembly embodiment after removing the unlocking slide, top base plate, top disc and part of the top plate.

[0028] Figure 5 is a cross-sectional view of an embodiment of the lock assembly;

[0029] Figure 6 This is a three-dimensional exploded view of the main body of the lock assembly embodiment;

[0030] Figure 7 This is a three-dimensional schematic diagram of the mounting base in the embodiment of the lock assembly;

[0031] Figure 8 This is a three-dimensional schematic diagram of an embodiment of the vault door locking mechanism;

[0032] Figure 9 This is a three-dimensional schematic diagram of the embodiment of the safe door locking mechanism after removing the unlocking slide. DETAILED DESCRIPTION

[0033] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0034] like Figures 1 to 7 The figure shows a preferred embodiment of a three-opening two-lock assembly.

[0035] A three-opening two-lock assembly, comprising

[0036] The unlocking slide 1 is constrained on the back of the door panel 10 and can only slide up and down along the door panel 10 . The unlocking slide 1 is provided with a rack portion 11 .

[0037] The unlocking plate 2 is arranged on the back of the door panel 10 and can rotate around its own axis.

[0038] The unlocking gear 4 is fixed on the unlocking disk 2 and is in driving engagement with the rack portion 11 .

[0039] Three arc-shaped locking plates 3 are arranged circumferentially around the outer circumference of the unlocking disk 2. The fixed end of the locking plate 3 is adjacent to the free end of the adjacent previous locking plate 3. The fixed end of the locking plate 3 is hinged to the back of the door panel 10 through a pin shaft 31. The free end of the locking plate 3 is acted upon by a tension spring 32 to keep the free end in a swinging trend toward the unlocking disk 2, so that the inner arc surface of the locking plate 3 gradually approaches the unlocking disk 2 from the fixed end toward the free end. The free end of each locking plate 3 has a raised blocking portion 33 on the outside.

[0040] There are three locks 5, each of which has a locking tongue 51 that can be telescoped inward and outward. Each locking tongue 51 corresponds to a blocking portion 33 on a locking plate 3. The outwardly extending locking tongue 51 can block the blocking portion 33 to prevent the free end of the locking plate 3 from swinging away from the unlocking disk 2.

[0041] Three driving plates 6 corresponding to the locking plates 3 one by one are constrained on the unlocking disk 2 to be able to radially expand and contract, and the rotation of the unlocking disk 2 can drive the driving plates 6 to rotate, the inner ends of each driving plate 6 abut against each other, and the outer ends of each driving plate 6 radially extend outward and abut against the inner arc surface of the locking plate 3. The radial inward contraction of one driving plate 6 pushes the other two driving plates 6 to further extend radially outward, and the rotation of the unlocking disk 2 can cause the driving plate 6 to push the free end of the unlocked locking plate 3 to swing away from the unlocking disk 2; the rotation of the unlocking disk 2 can cause the driving plate 6 to be pressed by the locked locking plate 3 and radially retract.

[0042] The locking plate 3 is provided with an arc-shaped guide groove 34, and the outer end of the driving plate 6 is provided with a driving wheel 61 that is placed in the guide groove 34 and can rotate around its own axis. In the initial state, the driving wheel 61 on each driving plate 6 is located at the guide groove near the fixed end of the locking plate 3.

[0043] The locking plate 3 is composed of a bottom plate 3a and a top plate 3b spaced apart in an upper and lower manner. One end of the bottom plate 3a and the top plate 3b are connected together by the pin shaft 31, and the other end of the bottom plate 3a and the top plate 3b are connected together by a connecting pin 35. One end of the tension spring 32 is sleeved on the pin shaft 31, and the other end of the tension spring 32 is sleeved on the connecting pin 35. A guide groove 34 is provided on the bottom plate 3a, and a driving wheel 61 that can rotate around its own axis is further provided at the outer end of the driving plate 6. The driving wheel 61 conflicts with the inner arc surface of the top plate 3b where the guide groove 34 is not provided.

[0044] The unlocking disk 2 consists of a bottom disk body 2a and a top disk body 2b spaced apart in the upper and lower parts, the bottom disk body 2a and the top disk body 2b are fixed together, the driving plate 6 is arranged between the bottom disk body 2a and the top disk body 2b, the driving plate 6 is provided with a guide groove 62 arranged in the radial direction, the top disk body 2b or the bottom disk body 2a is provided with a guide wheel 21 placed in the guide groove 62 and capable of rotating around its own axis, the top disk body 2b or the bottom disk body 2a is provided with a driving groove 22 arranged in the radial direction, and the driving plate 6 is provided with a driving wheel 63 placed in the driving groove 22 and capable of rotating around its own axis.

[0045] A mounting base 7 is fixed to the back of the door panel 10, and the mounting base 7 consists of a bottom seat plate 7a and a top seat plate 7b spaced apart from each other. The bottom seat plate 7a and the top seat plate 7b are fixed together, and the bottom seat plate 7a is fixed to the back of the door panel 10. The unlocking disk 2 and the locking plate 3 are both arranged between the bottom seat plate 7a and the top seat plate 7b, and the unlocking gear 4 is exposed upward from the top seat plate 7b.

[0046] The working principle and process of this three-way two-way lock assembly are as follows:

[0047] When all the locks 5 are in the locked state, the free ends of the locking plates 3 cannot swing away from the unlocking disk 2 (radially outward), so that the inner arc surface of the locking plate 3 gradually approaches the unlocking disk 2 from the fixed end toward the free end. Because the inner ends of the driving plates 6 abut against each other, the outer ends of the driving plates 6 radially extend outward and contact with the inner arc surface of the locking plate 3, and the driving plate 6 cannot rotate along the fixed end toward the free end. If the driving plate 6 wants to rotate along the fixed end toward the free end, it is necessary to push the free end of the locking plate 3 to swing radially outward. However, the blocking portion 33 on the locking plate 3 is blocked by the outwardly extending lock tongue 51, preventing the free end of the locking plate 3 from swinging radially outward, that is, the unlocking gear 4 fixed to the unlocking disk 2 is locked, and the unlocking slide plate 1 and the unlocking gear 4 are engaged with the gear rack transmission, so the unlocking slide plate 1 cannot slide downward under external force.

[0048] When two locks 5 are in the unlocked state (i.e., the lock tongue 51 is retracted) and the third lock 5 is in the locked state (i.e., the lock tongue 51 is extended), the inner arc surface of the locking plate 3 corresponding to the lock 5 in the locked state gradually approaches the unlocking disk 2 from the fixed end toward the free end. As the driving plate 6 rotates with the unlocking disk 2, the driving plate 6 retracts radially inwardly under the resistance of the inner arc surface of the locking plate 6. The radial inward contraction of this driving plate 6 pushes the other two driving plates 6 to further extend radially outward. The rotation of the unlocking disk 2 can cause the driving plate 6 to push the free end of the unlocked locking plate 3 to swing away from the unlocking disk 2 (radially outward), that is, the rotation of the unlocking gear 4 and the unlocking disk 2 will not be locked by the locking plate 3, and the unlocking slide plate 1 slides downward under the drive of external force, driving the unlocking gear 4 to slide, and the unlocking disk 2 also rotates accordingly, and finally the unlocking slide plate 1 can move downward under the drive of external force.

[0049] If the three locks 5 are all in the unlocked state, the rotation of the unlocking gear 4 and the unlocking disk 2 will not be locked by the locking plate 3, and finally the unlocking slide plate 1 can move downward under the drive of external force.

[0050] like Figures 8-9 Shown is a preferred embodiment of the vault door locking mechanism.

[0051] A vault door locking mechanism comprising

[0052] The main slide 8 is constrained on the back of the door panel 10 and can slide back and forth along the door panel 10;

[0053] The three-opening, two-lock assembly in the aforementioned embodiment;

[0054] The locking block 9 is constrained on the back of the door panel 10 and can slide up and down along the door panel 10. The locking block 9 can block the main slide 8 to prevent the main slide 8 from moving backward and unlocking. The unlocking slide 1 is connected to the locking block 9 to drive the locking block 9 to slide up and down;

[0055] The driving structure is used to drive the unlocking slide plate 1 to slide up and down.

[0056] A receiving seat 12 is fixed on the back of the door panel 10, and the locking block 9 is constrained in the receiving seat 12. A spring 14 is provided in the receiving seat 12 to keep the locking block 9 in an upward movement trend. The locking block 9 in the upward state blocks the main slide 8.

[0057] The driving structure includes a driving disk 13 which is arranged on the back side of the door panel 10 and is driven to rotate by a driving handle. A first driving column 131 is provided on the driving disk 13. The unlocking slide 1 is provided with a first driving groove 15 which is arranged along the left and right directions for inserting the first driving column 131. The first driving groove 15 has a transverse groove portion 151 and a transverse arc groove portion 152 which are connected to each other.

[0058] A second driving column 132 is also provided on the driving disk 13, and the main slide 8 is provided with a second driving groove 81 arranged along the up and down directions for the second driving column 132 to be inserted. The second driving groove 81 has a vertical groove portion 811 and a vertical arc groove portion 812 that are interconnected. At the beginning stage of opening the door, the second driving column 132 slides along the vertical arc groove portion 812 and cannot drive the main slide 8 to move. In the later stage of opening the door, the second driving column 132 is located in the vertical groove portion 811, and the rotation of the driving disk 13 can drive the main slide 8 to move.

[0059] The working principle and process of this locking structure are as follows:

[0060] The first driving column 131 drives the unlocking slide 1 to move up or down during the movement of the transverse groove 151. When the first driving column 132 slides in the transverse arc groove 152, the rotation of the driving disk 13 in this process does not drive the unlocking slide 1 to move left and right.

[0061] The second driving column 132 drives the main slide 8 to slide left and right during the movement of the vertical groove 811. When the second driving column 132 slides in the longitudinal arc groove 812, the rotation of the driving plate 13 in this process does not drive the main slide 8 to move left and right. This structure realizes that the rotation of the same driving plate 13 can drive the unlocking slide 1 and the main slide 8 to move in a staggered manner. When locking the door, the driving plate 13 first drives the main slide 1 to move to the right. At this time, the first driving column 131 is located in the transverse arc groove 152, and the driving plate 13 does not drive the unlocking slide 1 to move up; the driving plate 13 rotates further, the second driving column 132 is located in the longitudinal arc groove 812, and the first driving column 131 is located in the transverse groove 151, so that the further rotation of the driving plate 13 drives the locking block 9 to move up with the unlocking slide 1. The main slide 1 no longer moves to the right, and the locking block 9 forms a barrier to the main slide 1.

[0062] The unlocking slide 1 in the lock of this locking mechanism is connected to the locking block 9. The up and down movement of the unlocking slide 1 drives the locking block 9 to move up and down, thereby locking or unlocking the main slide 8. The three-lock and two-lock assembly of this safe door can realize the three-open-two function, that is, at least two of the three locks 5 need to be opened to make the unlocking slide 1 move downward under the drive of external force, which has high security. Each lock 5 can form a block on the blocking part 33 on the locking plate 3 through the outward-extending lock tongue 51 to complete the locking, and the lock tongue 51 is not directly connected to the unlocking slide 1, that is, the extension and retraction of the lock tongue 51 of the lock 5 does not directly drive the unlocking slide 1 to move, and the extension and retraction of the lock tongue 51 of the lock 5 does not require a large force. For this reason, the lock in this structure can adopt an electronic lock, which provides the possibility of achieving sealing or fingerprint opening of the lock.

[0063] It should be noted that in the description of this embodiment, the terms "upper", "lower", "inner", "outer", "left", "right", etc., indicating directions or positional relationships, are all based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. The terms "install", "connect", and "connected" should be understood in a broad sense. For example, they can be fixedly connected, detachably connected, or integrally connected; they can be directly connected, or indirectly connected through an intermediate medium, or they can be internal connections between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A three-way two-lock assembly, characterized by: include An unlocking slide plate (1) is constrained on the back of the door panel (10) and can slide up and down along the door panel (10), and a rack portion (11) is provided on the unlocking slide plate (1); An unlocking disk (2) is provided on the back of the door panel (10) and is capable of rotating around its own axis; An unlocking gear (4) is fixed on the unlocking disk (2) and is in driving engagement with the rack portion (11); Three arc-shaped locking plates (3) are arranged around the outer circumference of the unlocking disk (2) at intervals, the fixed end of the locking plate (3) is adjacent to the free end of the adjacent previous locking plate (3), the fixed end of the locking plate (3) is hinged to the back of the door panel (10) through a pin shaft (31), the free end of the locking plate (3) is acted upon by a tension spring (32) so that the free end maintains a swinging tendency toward the unlocking disk (2), so that the inner arc surface of the locking plate (3) gradually approaches the unlocking disk (2) from the fixed end toward the free end, and the free end of each locking plate (3) has a protruding blocking portion (33) on the outside; Three locks (5), each lock (5) having a locking tongue (51) that is telescopically extended inwards and outwards, each locking tongue (51) corresponding to a blocking portion (33) on a locking plate (3), and the outwardly extended locking tongue (51) can block the blocking portion (33) to prevent the free end of the locking plate (3) from swinging in a direction away from the unlocking disk (2); Three drive plates (6) corresponding to the locking plates (3) are constrained on the unlocking disk (2) to be able to radially expand and contract, and the rotation of the unlocking disk (2) can drive the drive plates (6) to rotate, the inner ends of the drive plates (6) abut against each other, and the outer ends of the drive plates (6) radially extend outward and abut against the inner arc surface of the locking plate (3), and the radial inward contraction of one of the drive plates (6) pushes the other two drive plates (6) to further radially extend outward, and the rotation of the unlocking disk (2) can cause the drive plate (6) to push the free end of the unlocked locking plate (3) to swing in a direction away from the unlocking disk (2); the rotation of the unlocking disk (2) can cause the drive plate (6) to be pressed by the locked locking plate (3) and radially contract.

2. The three-opening, two-lock assembly according to claim 1, characterized in that: The locking plate (3) is provided with an arc-shaped guide groove (34), and the outer end of the driving plate (6) is provided with a driving wheel (61) placed in the guide groove (34) and capable of rotating around its own axis.

3. The three-opening, two-lock assembly according to claim 2, characterized in that: In an initial state, the driving wheel (61) on each driving plate (6) is located at a guide groove close to the fixed end of the locking plate (3).

4. The three-opening, two-lock assembly according to claim 2, characterized in that: The locking plate (3) is composed of a bottom plate (3a) and a top plate (3b) spaced apart from each other. One end of the bottom plate (3a) and the top plate (3b) are connected together by the pin shaft (31), and the other end of the bottom plate (3a) and the top plate (3b) are connected together by a connecting pin (35). One end of the tension spring (32) is sleeved on the pin shaft (31), and the other end of the tension spring (32) is sleeved on the connecting pin (35). The guide groove (34) is provided on one of the bottom plate (3a) and the top plate (3b). The outer end of the driving plate (6) is also provided with a driving wheel (61) that can rotate around its own axis. The driving wheel (61) contacts the inner arc surface of the bottom plate (3a) or the top plate (3b) on which the guide groove (34) is not provided.

5. The three-opening, two-lock assembly according to claim 1, characterized in that: The unlocking disk (2) is composed of a bottom disk body (2a) and a top disk body (2b) spaced apart from each other. The bottom disk body (2a) and the top disk body (2b) are fixed together. The driving plate (6) is arranged between the bottom disk body (2a) and the top disk body (2b). A guide groove (62) arranged in a radial direction is provided on the driving plate (6). The top disk body (2b) or the bottom disk body (2a) is provided with a guide wheel (21) placed in the guide groove (62) and capable of rotating around its own axis. The top disk body (2b) or the bottom disk body (2a) is provided with a driving groove (22) arranged in a radial direction. The driving plate (6) is provided with a driving wheel (63) placed in the driving groove (22) and capable of rotating around its own axis.

6. The three-opening, two-lock assembly according to claim 1, characterized in that: A mounting seat (7) is fixed on the back of the door panel (10), and the mounting seat (7) is composed of a bottom seat plate (7a) and a top seat plate (7b) spaced apart from each other. The bottom seat plate (7a) and the top seat plate (7b) are fixed together, and the bottom seat plate (7a) is fixed to the back of the door panel (10). The unlocking disk (2) and the locking plate (3) are both arranged between the bottom seat plate (7a) and the top seat plate (7b), and the unlocking gear (4) is exposed upward from the top seat plate (7b).

7. A safe door locking mechanism, comprising A main slide (8) is constrained on the back of the door panel (10) and can slide forward and backward along the door panel (10); Its characteristics are: Also includes A three-way two-lock assembly as claimed in any one of claims 1 to 6; A locking block (9) is constrained on the back of the door panel (10) and can slide up and down along the door panel (10). The locking block (9) can block the main slide (8) to prevent the main slide (8) from moving backward and unlocking. The unlocking slide (1) is connected to the locking block (9) to drive the locking block (9) to slide up and down. The driving structure is used to drive the unlocking slide plate (1) to slide up and down.

8. The safe door locking mechanism according to claim 7, characterized in that: A receiving seat (12) is fixed on the back of the door panel (10), and the locking block (9) is constrained in the receiving seat (12). A spring (14) is provided in the receiving seat (12) to keep the locking block (9) in an upward movement trend. The locking block (9) in the upward movement state blocks the main slide plate (8).

9. The safe door locking mechanism according to claim 7, characterized in that: The driving structure comprises a driving disk (13) arranged on the back side of the door panel (10) and driven to rotate by a driving handle, the driving disk (13) being provided with a first driving column (131), the unlocking slide plate (1) being provided with a first driving groove (15) arranged in a left-right direction for the first driving column (131) to be inserted, the first driving groove (15) comprising a transverse groove portion (151) and a transverse arc-shaped groove portion (152) which are connected to each other.

10. The safe door locking mechanism according to claim 9, characterized in that: The driving disk (13) is also provided with a second driving column (132), and the main slide (8) is provided with a second driving groove (81) arranged in the up and down directions for the second driving column (132) to be inserted, and the second driving groove (81) has a vertical groove portion (811) and a vertical arc groove portion (812) that are connected to each other. At the beginning stage of opening the door, the second driving column (132) slides along the vertical arc groove portion (812) and cannot drive the main slide (8) to move. At the rear stage of opening the door, the second driving column (132) is located in the vertical groove portion (811), and the rotation of the driving disk (13) can drive the main slide (8) to move.

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