Rotary locking structure and method
The rotating lock mechanism simplifies and lightens the lock structure by using unequal radius arcs and position-limiting steps, addressing space and weight challenges while ensuring robust security and cost-effectiveness.
Patent Information
- Application Number
- CN202510658497.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-21
- Publication Date
- 2025-07-15
AI Technical Summary
The traditional locking mechanism occupies a large space on small products, has high structural redundancy, and the doors on the upper doors are heavy and easy to damage, which increases the difficulty and cost of processing.
It adopts a rotary locking structure, through the combination of locking plates and limit steps designed with unequal diameter arc segments, combined with electronic locks and emergency locks, locking and release are achieved, the locking system is simplified, and the rotation stroke of the locking plate is accurately controlled.
It solves the problem of large space occupation and high structural redundancy in the miniaturized and upper door opening products, reduces costs, reduces the door's self-weight and accidental fall risks, and improves the safety of use.
Smart Images
Figure CN120312034A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of locks, and in particular to a rotary locking structure and method. Background Art
[0002] The locking mechanism of electronic locks such as cabinets generally controls the suction and release of the electromagnet core through electronic passwords or fingerprints to achieve the opening and locking of the mechanism. The push plate with the lock bolt head inside is driven by a knob or mechanical lock to move back and forth to achieve the purpose of locking and opening the door. At the same time, it cooperates with the emergency lock emergency opening system to avoid emergency opening in special situations such as power failure or forgotten passwords. However, this traditional mechanism has great problems when used on some small products:
[0003] 1. The product is small and there is not enough space to accommodate the large-area parts layout of traditional mechanisms;
[0004] 2. If some products with upper-opening doors adopt traditional mechanisms, the opened doors will be very heavy. If you accidentally touch the closed door when taking items, you may get hurt;
[0005] 3. Many products do not require traditional complex insurance institutions, which not only increases the difficulty of processing, but also increases costs and loses price competitiveness. Summary of the invention
[0006] To achieve the above object, the present invention provides the following technical solution: a rotary locking structure and method, comprising:
[0007] The locking piece is composed of arc segments of unequal diameters. By rotating and switching different arc segments, different distances from the center of the locking piece to the edge can be obtained;
[0008] The limiting step is formed by connecting lines at both ends of different arc segments and is used to limit the rotation position of the locking piece;
[0009] Electronic locks include a locking component that can be moved in a controlled manner, and the locking and release of the lock plate is achieved by controlling its position change;
[0010] The limiting column is arranged at the limiting step and is used to fix the rotation state of the locking piece.
[0011] As a preferred technical solution of the present invention, a large arc segment, a middle arc segment and a small arc segment are sequentially arranged on the periphery of the locking plate.
[0012] As a preferred technical solution of the present invention, the limit step is formed in the transition area between the large arc segment, the middle arc segment and the small arc segment, which is composed of connecting lines at both ends of adjacent arc segments, including a first limit step between the large arc segment and the middle arc segment, a second limit step between the middle arc segment and the small arc segment, and a third limit step between the small arc segment and the large arc segment.
[0013] As a preferred technical solution of the present invention, a guiding groove is provided inside the locking piece, and the center of the guiding groove coincides with the rotation center of the locking piece.
[0014] As a preferred technical solution of the present invention, a guiding post is embedded inside the guiding groove.
[0015] As a preferred technical solution of the present invention, the locking piece, the electronic lock, the limiting post, and the guiding post are all arranged on the door. A knob or a lock is provided on the door for driving the locking piece to rotate. When the locking piece rotates to the large arc segment facing outwards and is limited, the protruding part of the large arc segment is used as a lock tongue.
[0016] As a preferred technical solution of the present invention, an emergency lock is further included, and an emergency lock striker is provided on the lock shaft of the emergency lock.
[0017] As a preferred technical solution of the present invention, the electronic lock is an electromagnet, and a pressing piece capable of driving the iron core to contract is provided on the iron core of the electronic lock. Rotating the emergency lock drives the emergency lock striker to press the pressing piece to cause the iron core to contract, so that the locking piece is in an openable state.
[0018] As a preferred technical solution of the present invention, the iron core is controlled to contract by the electronic lock or the emergency lock to execute the open state, and the iron core is driven by the built-in spring to bounce up to execute the locked state.
[0019] A rotary locking method includes the following steps:
[0020] S1. Initial state setting: The locking piece maintains the initial positioning through the cooperation of the guiding post and the guiding groove. The iron core of the electronic lock is in the popped-up state under the action of the spring and is locked by engaging with the current limiting step. By default, the large arc segment faces outwards, and its protruding part serves as a lock tongue and is inserted into the door frame lock hole.
[0021] S2. Electronic unlocking and rotation: After the electronic lock receives the unlocking signal, the electromagnet is energized to cause the iron core to contract, disengaging from the limiting step to release the locking piece. The locking piece is rotated by the knob, and the guiding groove slides along the guiding post, switching to the small arc segment facing outwards.
[0022] S3. Limiting and locking state switching: When the locking piece rotates to the large arc segment facing outwards, the limiting post contacts the third limiting step to form a mechanical limit, and the iron core of the electromagnet pops into the first limiting step to complete the locking. If it switches to the small arc segment facing outwards, the lock tongue is completely retracted, and the door is in an openable state.
[0023] S4. Emergency unlocking mechanism: In special cases, an emergency unlocking method can be adopted. Rotate the emergency lock to drive the emergency lock striker to press down the electromagnet pressing piece, forcibly contract the iron core to release the lock, and manually rotate the locking piece to the open position. The guiding post and the limiting post cooperate to prevent unexpected displacement.
[0024] S5. State reset: After closing the door, rotate the lock piece in the reverse direction. The large arc segment extends out again as the locking tongue. The electromagnet core that has been suppressed by the large arc segment automatically pops into the corresponding limit step under the action of the internal spring and enters the locking mode.
[0025] S6. Anti-prying protection: Increase the thickness of the lock piece to ensure the anti-prying strength. When abnormal external force acts on the lock piece, the limit post and the core bear the radial force of the lock piece to prevent the limit step from tripping. The screw fastening between the knob shaft and the lock piece and the rigid fit between the guide post and the guide groove prevent the axial displacement of the lock piece.
[0026] Compared with the prior art, the present invention provides a rotary locking structure and method, which has the following
[0027] Beneficial effects:
[0028] The rotary locking structure and method simplify the complex locking system that relies on the lock head combined with the push plate and surrounding parts, and effectively solve the problems of large space occupation and high structural redundancy of the traditional locking system in products such as miniaturization, simplicity, and weight reduction for upward-opening doors. Through the cooperation of the limit step and the limit post, the rotation stroke of the lock piece is accurately controlled, reducing unnecessary actions. It is especially suitable for upward-opening cabinets. The simplified structure reduces the self-weight of the door, reduces costs, can also reduce the door size, prevent accidental falling, and significantly improves the use safety, providing a good solution for the locking mechanism of small products and upward-opening products. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] Figure 1 FIG. 1 is a schematic structural diagram of the locking state of the lock piece in the first embodiment of a rotary locking structure and method proposed by the present invention;
[0030] Figure 2 FIG. 2 is a schematic structural diagram of the unlocking state of the lock piece in the first embodiment of a rotary locking structure and method proposed by the present invention;
[0031] Figure 3 FIG. 3 is a front view of the door structure in the first embodiment of a rotary locking structure and method proposed by the present invention;
[0032] Figure 4 FIG. 4 is a schematic structural diagram of the locking state of the lock piece in the second embodiment of a rotary locking structure and method proposed by the present invention;
[0033] Figure 5 FIG. 5 is a schematic diagram of the rotary locking method of a rotary locking structure and method proposed by the present invention;
[0034] Figure 6 FIG. 6 is a schematic structural diagram of the electronic lock unlocking state of the lock piece in the second embodiment of a rotary locking structure and method proposed by the present invention;
[0035] Figure 7A schematic diagram of a lock piece emergency lock unlocking structure according to a second embodiment of a rotary locking structure and method proposed by the present invention;
[0036] Figure 8 This is a rear view of a door structure of Example 2 of a rotary locking structure and method proposed by the present invention.
[0037] In the figure: 1. locking plate; 11. large arc segment; 12. middle arc segment; 13. small arc segment; 14. guide groove; 15. guide column; 2. limiting step; 21. first limiting step; 22. second limiting step; 23. third limiting step; 3. electronic lock; 31. iron core; 32. pressing plate; 4. limiting column; 41. locking door stop column; 42. opening door stop column; 5. door; 51. knob; 6. emergency lock; 61. emergency lock punch. DETAILED DESCRIPTION
[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not 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.
[0039] For example, see Figure 1-4 A rotary locking structure and method includes a locking plate 1, which is composed of arc segments of unequal diameters. Different distances between the center of the locking plate 1 and the edge can be obtained by rotating and switching different arc segments.
[0040] The limiting step 2 is formed by connecting lines at both ends of different arc segments and is used to limit the rotation position of the locking plate 1.
[0041] The electronic lock 3 includes a locking component that can be controlled to move, and the locking and releasing of the lock plate 1 is achieved by controlling the position change of the locking component. The electronic lock 3 can be controlled by fingerprint lock, password lock, etc.
[0042] The limiting column 4 is arranged at the limiting step 2 and is used to fix the rotation state of the locking plate 1.
[0043] As a specific technical solution of this embodiment, a large arc segment 11, a middle arc segment 12 and a small arc segment 13 are sequentially arranged on the periphery of the locking plate 1.
[0044] In this implementation, a three-stage arc difference design is used to achieve rapid switching of the locking state. The large arc segment 11 serves as the only effective lock tongue to provide anti-shear support. The large arc segment 11 is contact-locked when fully retracted, and the middle arc segment 12 serves as an unlocking limit for the lock plate 1 to avoid unnecessary rotation and make the operation more convenient. The large arc segment 11, the middle arc segment 12 and the small arc segment 13 are integrally formed with the lock plate 1 to improve the structural strength of the lock plate 1 and further prevent prying.
[0045] As a specific technical solution of this embodiment, the limiting step 2 is formed in the transition region between the large arc segment 11, the middle arc segment 12, and the small arc segment 13, which is composed of the connecting lines at both ends of adjacent arc segments, and includes a first limiting step 21 between the large arc segment 11 and the middle arc segment 12, a second limiting step 22 between the middle arc segment 12 and the small arc segment 13, and a third limiting step 23 between the small arc segment 13 and the large arc segment 11.
[0046] In this implementation scheme, when the lock piece 1 rotates until the third limiting step 23 catches the limiting column 4, the lock piece 1 remains in the locked state. At the same time, the iron core 31 of the electromagnet pops out to catch the first limiting step 21. When the lock piece 1 rotates until the second limiting step 22 catches the limiting column 4, the lock piece 1 remains in the unlocked state. The three limiting steps 2 are angularly distributed to ensure that the rotation angle of the lock piece 1 is precisely controllable, reduce unnecessary rotation, and make the unlocking and locking operations more convenient, fast, and efficient. At the same time, the positioning and calibration burden of the electronic lock 3 is reduced.
[0047] As a specific technical solution of this embodiment, a guiding groove 14 is provided inside the lock piece 1. The center of the guiding groove 14 coincides with the rotation center of the lock piece 1, and a guiding column 15 is embedded inside the guiding groove 14.
[0048] In this implementation scheme, one end of the guiding column 15 away from the guiding groove 14 is fixed on the door 5. When the lock piece 1 rotates, the guiding groove 14 slides along the guiding column 15. The guiding groove 14 and the guiding column 15 can play a precise guiding role in the rotation of the lock piece 1. A circular groove is provided at one end of the guiding column 15 away from the door 5 and clamped on both sides of the guiding groove 14. The inner walls on both sides of the circular groove and the two sides of the guiding groove 14 are both smooth surfaces, reducing the frictional resistance and making the zero-gap rotation smoother. It can not only guide the rotation of the lock piece 1 but also prevent the axial sway of the lock piece 1 and provide anti-prying support.
[0049] As a specific technical solution of this embodiment, the lock piece 1, the electronic lock 3, the limiting column 4, and the guiding column 15 are all provided on the door 5. A knob 51 or a lock is provided on the door 5 for driving the lock piece 1 to rotate. When the lock piece 1 rotates until the large arc segment 11 faces outward and is limited, the protruding part of the large arc segment 11 serves as a lock tongue.
[0050] In this implementation scheme, the state of the lock tongue adapts to the door frame structure of the door 5. The protruding length of the large arc segment 11 can be customized to be compatible with different door thickness requirements. The knob 51 drive avoids occupying the axial space of the traditional lock core. The lock piece 1 is driven by the knob 51. After the electronic lock 3 and the emergency lock 6 are unlocked, the lock piece 1 can be directly rotated by the knob 51 to unlock. When the lock piece 1 is driven by a lock, after the electronic lock 3 and the emergency lock 6 are unlocked, the lock piece 1 needs to be unlocked and locked by turning the lock with a key.
[0051] As a specific technical solution of this embodiment, it further includes an emergency lock 6. An emergency lock tab is provided on the lock shaft of the emergency lock 6. The electronic lock 3 is an electromagnet, and a pressing piece 32 capable of driving the iron core 31 of the electronic lock 3 to contract is provided on the iron core 31 of the electronic lock 3. Rotating the emergency lock 6 drives the emergency lock tab to press the pressing piece 32 to cause the iron core 31 to contract, so that the lock piece 1 is in an openable state. The iron core 31 is controlled by the electronic lock 3 or the emergency lock 6 to contract to execute the open state, and is driven by the built-in spring to bounce up the iron core 31 to execute the locking state.
[0052] In this implementation scheme, the end of the emergency lock tab away from the lock shaft of the emergency lock 6 is arc-shaped. The electronic lock 3 can be an electromagnet or a combination of a motor driving a motor lock tongue. During mechanical emergency unlocking, one end of the arc of the tab contacts and presses down the pressing piece 32. This design method can effectively reduce the friction between the emergency lock tab and the pressing piece 32. The redundant locking mechanism of the built-in spring of the electromagnet ensures that it automatically enters a safe state when powered off.
[0053] A rotary locking method includes the following steps:
[0054] S1. Initial state setting: The lock piece 1 maintains the initial positioning through the cooperation of the guide post 15 and the guide groove 14. The iron core 31 of the electronic lock 3 is in the popped-up state under the action of the spring and is locked by engaging with the current limit step 2. By default, the large arc segment 11 faces outwards, and its protruding part serves as a lock tongue inserted into the lock hole of the door 5 frame.
[0055] S2. Electronic unlocking and rotation: After the electronic lock 3 receives the unlocking signal, the electromagnet is energized to cause the iron core 31 to contract, disengaging from the limit step 2 to release the lock piece 1. The lock piece 1 is rotated by driving the knob 51, and the guide groove 14 slides along the guide post 15 to switch to the small arc segment 13 facing outwards.
[0056] S3. Limit and locking state switching: When the lock piece 1 rotates to the large arc segment 11 facing outwards, the limit post 4 contacts the third limit step 23 to form a mechanical limit, and the iron core 31 of the electromagnet pops into the first limit step 21 to complete the locking. If it is switched to the small arc segment 13 facing outwards, the lock tongue is completely retracted, and the door 5 is in an openable state.
[0057] S4. Emergency unlocking mechanism: In special cases, an emergency unlocking method can be adopted. Rotate the emergency lock 6 to drive the emergency lock tab 61 to press down the electromagnet pressing piece 32, forcibly contract the iron core 31 to release the lock, and manually rotate the lock piece 1 to the open position. The guide post 15 and the limit post 4 cooperate to prevent unexpected displacement.
[0058] S5, state reset, after closing the door 5, the lock plate 1 is rotated in the opposite direction, the large arc segment 11 is extended again as a lock tongue, and the electromagnet core 31 which has been suppressed by the large arc segment 11 automatically springs into the corresponding limit step 2 under the action of the internal spring to enter the locking mode. After the system detects the in-position signal, the electromagnet is powered off and enters the normally locked mode;
[0059] S6, anti-pry protection, increasing the thickness of the lock plate 1 to ensure anti-pry strength; when abnormal external force acts on the lock plate 1, the limit column 4 and the iron core 31 bear the radial force of the lock plate 1 to prevent the limit step 2 from being disengaged, the screw fastening of the knob 51 shaft and the lock plate 1 and the rigid cooperation of the guide column 15 and the guide groove 14 prevent the axial displacement of the lock plate 1, and the guide column 15 pulls the lock plate 1 through the circular groove to increase the prying force that the lock plate 1 bears.
[0060] For example 2, please refer to Figure 1-8 , a rotary locking structure, comprising:
[0061] The locking piece 1 is composed of arc segments of unequal diameters. By rotating and switching different arc segments, different distances from the center of the locking piece 1 to the edge can be obtained;
[0062] The limiting step 2 is formed by connecting lines at both ends of different arc segments and is used to limit the rotation position of the locking piece 1;
[0063] The electronic lock 3 includes a locking component that can be controlled to move, and the locking and releasing of the locking plate 1 are achieved by controlling the position change of the locking component;
[0064] The limiting column 4 is arranged at the limiting step 2 and is used to fix the rotation state of the locking plate 1.
[0065] As a specific technical solution of this embodiment, the lock plate 1 is installed on the door 5, and a large arc segment 11 and a small arc segment 13 are sequentially arranged on the periphery of the lock plate 1. The limiting step 2 is formed in the transition area between the large arc segment 11 and the small arc segment 13, and is composed of connecting lines at both ends of adjacent arc segments.
[0066] In this embodiment, the large arc segment 11 and the small arc segment 13 of the locking plate 1 are integrally formed, thereby improving the overall structural strength of the locking plate 1 .
[0067] As a specific technical solution of this embodiment, the electronic lock 3 is an electromagnet. Under normal circumstances, the iron core 31 of the electronic lock 3 is driven by a built-in spring to bounce up to stop the limit step 2, and the stop and passing state is achieved through the bouncing and contraction of the iron core 31.
[0068] As a specific technical solution of this embodiment, the limit column 4 includes a door locking 5 stop column 41 and a door opening 5 stop column 42, which respectively correspond to the two limit steps 2. The door locking 5 stop column 41 can be omitted by lengthening the large arc section 11 of the locking plate 1. At this time, the door opening 5 stop column 42 can also serve as the door locking 5 stop column 41 at the same time.
[0069] In this embodiment, the two limit steps 2 correspond to the stop column 41 of the lock door 5 and the stop column 42 of the door opening 5 respectively. When locking, the lock plate 1 rotates, and the large arc segment 11 forms a lock tongue outward to clamp the door 5 frame. In order to avoid the lock plate 1 from rotating excessively, the stop column 41 of the lock door 5 is provided to clamp the limit step 2 to limit the rotation stroke of the lock plate 1, which makes the operation more convenient. When the limit step 2 on the lock plate 1 hits the stop column 41 of the lock door 5, the other limit step 2 avoids the iron core 31 of the electromagnet, and the iron core 31 rebounds and rises to block one side of the limit step 2, so that the lock plate 1 is locked. When unlocking, the electronic lock 3 attracts the iron core 31 to descend and disengage from the limit of the limit step 2. At this time, the lock plate 1 will naturally deflect due to the influence of the center of gravity, but it will not completely disengage. When the lock plate 1 is in the unlocked state, the iron core 31 can automatically rebound and get stuck on one side of the limit step 2. The structure is simple and the design is ingenious, which is in line with the economic benefits and has broad application prospects.
[0070] As a specific technical solution of this embodiment, an emergency lock 6 is also included. An emergency lock 6 punch is provided on the lock shaft of the emergency lock 6, and an arc section is provided below the emergency lock 6 punch.
[0071] In this embodiment, the setting of the arc segment can not only avoid the stop column 42 for opening the door 5, but also when the user uses the key to unlock the emergency lock 6, the rotation of the arc segment against the pressure plate 32 will be smoother, reducing wear and making it more convenient to use. The emergency lock 6 is a key mechanical lock with a limiting function to prevent the emergency lock 6 from rotating excessively. The stop column 42 for opening the door 5 can also limit the stroke of the emergency lock 6. If more precise control of the stroke is required, a stop column can be installed on the door 5 to control the stroke.
[0072] As a specific technical solution of this embodiment, a pressing plate 32 is provided on the iron core 31 of the electronic lock 3, which can drive the electromagnet iron core 31 to contract. The rotating emergency lock 6 drives the emergency lock 6 to press the pressing plate 32 to cause the electromagnet iron core 31 to contract, so that the locking plate 1 is in an openable state. The locking plate 1 is installed on a knob 51 or a lock for driving the locking plate 1 to rotate. The iron core 31 is controlled to contract by the electronic lock 3 or the emergency lock 6 to execute the open state, and the electromagnet iron core 31 is driven by the built-in spring to bounce up to execute the locked state.
[0073] Compared with the above embodiments, in this embodiment, the locking piece 1 cancels the guide post 15, the guide groove 14 and the middle arc segment 12, and adds a limit post 4 to cooperate with the limit step 2 to limit the locked state and the unlocked state of the locking piece 1. The design of the locking piece 1 is more streamlined than that of the locking piece 1 in the above embodiments, reducing the number of parts, lowering the processing complexity and assembly cost. Only the large and small arc segments 13 and the corresponding limit steps 2 are retained, and the switching of the locked state is more intuitive, with fewer user operation steps. A door-opening stop post 42 and a door-locking stop post 41 are added to cooperate with the limit step 2 to prevent the locking piece 1 from shifting by double-limiting. The design of the arc segment of the emergency lock 6 reduces the friction with the pressing piece 32, making the emergency unlocking smoother.
[0074] Both the first embodiment and the second embodiment have good anti-prying designs: the integral molding of the locking piece 1 and the rigid cooperation of the limiting components (the limit post 4 and the limit step 2) can effectively resist external force damage;
[0075] Redundant safety mechanism: double insurance of the electronic lock 3 and the emergency lock 6, and the spring automatically locks when the power is off, taking into account both intelligent control and mechanical reliability;
[0076] Space adaptability: The drive of the knob 51 reduces the axial space occupation, the length of the arc segment can be customized to adapt to different door 5 thickness requirements, reducing the door 5 space layout, reducing parts such as the lock head, the push plate, the baffle plate, and the fixing plate. It can also reduce the size of the door 5, greatly reducing the weight and cost; increasing the thickness and size of the locking piece 1 can increase the anti-prying strength of the locking piece 1, which can theoretically meet the requirements for the anti-prying strength of the locking piece 1. Adopting a smaller part space layout and a lighter weight, while meeting the anti-prying strength of the locking piece 1, it brings a good solution for the locking mechanism of small products and top-opening door 5 products.
[0077] In summary, the rotary locking structure and method simplify the complex locking system relying on the combination of the lock head, the push plate and the surrounding parts, effectively solving the problems of large space occupation and high structural redundancy in traditional locking systems for products such as miniaturization, simplification, and weight reduction required for top-opening door 5. Through the cooperation of the limit step 2 and the limit post 4, the rotation stroke of the locking piece 1 is accurately controlled, reducing unnecessary movements. It is especially suitable for top-opening door 5 type cabinets, with a streamlined structure, reducing the self-weight of the door 5, reducing the cost, and can also reduce the size of the door 5, preventing accidental falling, significantly improving the use safety, and bringing a good solution for the locking mechanism of small products and top-opening door 5 products.
[0078] It should be noted that in this text, terms such as "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.
[0079] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A rotary locking structure, characterized in that, include: The locking piece (1) is composed of arc segments of unequal diameters, and different distances between the center of the locking piece (1) and the edge can be obtained by rotating and switching different arc segments; A limiting step (2), formed by connecting lines at both ends of different arc segments, is used to limit the rotation position of the locking piece (1); The electronic lock (3) comprises a locking component that can be moved in a controlled manner, and the locking and releasing of the locking plate (1) are achieved by controlling the position change of the locking component; The limiting column (4) is arranged at the limiting step (2) and is used to fix the rotation state of the locking plate (1).
2. The rotary locking structure according to claim 1, characterized in that: A large arc segment (11), a middle arc segment (12) and a small arc segment (13) are sequentially arranged on the periphery of the locking plate (1).
3. A rotary locking structure according to claim 1, wherein: The limiting step (2) is formed in a transition area between the large arc segment (11), the middle arc segment (12) and the small arc segment (13), and is composed of connecting lines at both ends of adjacent arc segments, including a first limiting step (21) between the large arc segment (11) and the middle arc segment (12), a second limiting step (22) between the middle arc segment (12) and the small arc segment (13), and a third limiting step (23) between the small arc segment (13) and the large arc segment (11).
4. A rotary locking structure according to claim 1, characterized in that: A guide groove (14) is provided inside the locking plate (1), and the center of the guide groove (14) is consistent with the rotation center of the locking plate (1).
5. A rotary locking structure according to claim 4, characterized in that: A guide column (15) is embedded inside the guide groove (14).
6. A rotary locking structure according to claim 1, characterized in that: The locking plate (1), the electronic lock (3), the limiting column (4), and the guide column (15) are all arranged on the door (5). The door (5) is provided with a knob (51) or a lock for driving the locking plate (1) to rotate. When the locking plate (1) is rotated to the point where the large arc segment (11) faces outward and is limited, the portion of the large arc segment (11) that protrudes outward acts as a lock tongue.
7. A rotary locking method according to any one of claims 1-6, characterized in that, The following steps are involved: S1, initial state setting, the lock piece (1) maintains the initial position through the cooperation of the guide column (15) and the guide groove (14), the iron core (31) of the electronic lock (3) is in a pop-up state under the action of the spring, and is inserted into the current limit step (2) to achieve locking, and in the default state, the large arc segment (11) faces outward, and its protruding part is embedded in the door (5) frame lock hole as a lock tongue; S2, electronic unlocking and rotation, after the electronic lock (3) receives the unlocking signal, the electromagnet is energized to cause the iron core (31) to contract, disengage from the limit step (2) and release the lock plate (1), and the lock plate (1) is driven to rotate by the knob (51), and the guide groove (14) slides along the guide column (15) and switches to the small arc segment (13) facing outward; S3, the limit and locking state are switched. When the lock plate (1) rotates to the position where the large arc segment (11) faces outward, the limit column (4) contacts the third limit step (23) to form a mechanical limit, and the electromagnet core (31) springs into the first limit step (21) to complete the locking. If the lock plate (1) is switched to the position where the small arc segment (13) faces outward, the lock tongue is completely retracted and the door (5) is in an openable state. S4, emergency unlocking mechanism. In special circumstances, the emergency unlocking method can be used. The emergency lock (6) is rotated to drive the emergency lock plate (61) to press the electromagnet pressing plate (32), forcibly contracting the iron core (31) to release the lock, and manually rotating the lock plate (1) to the open position. The guide column (15) and the limit column (4) cooperate to prevent unexpected displacement; S5. State reset. After closing the door (5), rotate the locking piece (1) in the reverse direction. The large arc section (11) extends out again as the locking tongue. The electromagnet iron core (31) that has been pressed by the large arc section (11) automatically pops into the corresponding limit step (2) under the action of the internal spring and enters the locking mode. S6. Anti-prying protection. Increase the thickness of the locking piece (1) to ensure the anti-prying strength. When abnormal external force acts on the locking piece (1), the limit post (4) and the iron core (31) bear the radial force of the locking piece (1) to prevent the limit step (2) from tripping. The rigid fit between the screw fastening of the knob (51) shaft and the locking piece (1) and the guide post (15) and the guide groove (14) prevents the axial displacement of the locking piece (1).