Rotary locking structure

Abstract

The utility model discloses a rotary locking structure, and relates to the technical field of locks. Comprising a lock plate which is composed of arc sections with different diameters, different distances between the center of the lock plate and the edge can be obtained by rotating and switching different arc sections, and the functions of opening or closing, contracting or stretching, pushing or pulling and the like can be achieved by acting on other parts through the distance changes. The limiting step is formed by connecting lines at the two ends of different arc sections, is matched with a limiting column or an electronic lock control electromagnet iron core and other elements and is used for limiting the rotating position of the locking plate, and the reliable and stable required distance between the center of the locking plate and the edge is obtained; according to the rotary locking structure, a push-pull type complex locking system with the lock head combined with the push plate and auxiliary peripheral parts is simplified, and the problems that a traditional locking system is large in occupied space and high in structural redundancy in products which are miniaturized, simplified and need to reduce the weight of an upward opening door and the like are effectively solved. Furthermore, a guide groove is additionally formed in the lock plate and matched with a guide column, so that the prying-resistant performance of the lock plate can be improved, and the door locking clearance precision is improved.

Description

Technical Field

[0001] This utility model relates to the field of lock technology, specifically a rotary locking structure. Background Technology

[0002] Electronic locks for cabinets and similar items typically use electronic passwords or fingerprints to control the attraction and release of an electromagnet core, thus locking and unlocking the door. Externally, a knob or mechanical lock mechanism moves an internal push plate with a bolt head back and forth to achieve locking and unlocking. They also incorporate emergency locks and unlocking systems to prevent unauthorized opening in situations such as power outages or forgotten passwords. However, this traditional mechanism presents significant problems when used in certain small products:

[0003] 1. The product is too small and does not have enough space to accommodate the large-area component layout of traditional mechanisms;

[0004] 2. Some top-opening products, if using a traditional mechanism, will make the door very heavy when opening. If you accidentally close the door while taking out items, it may cause injury.

[0005] 3. Many products do not require traditional and complex insurance institutions, which not only increases the difficulty of processing but also increases costs and reduces price competitiveness. Utility Model Content

[0006] To achieve the above objectives, this utility model provides the following technical solution: a rotary locking structure, comprising:

[0007] The locking plate is composed of arc segments of unequal diameter. By rotating and switching different arc segments, different distances from the center of the locking plate to the edge can be obtained.

[0008] The limiting step, formed by the connecting lines at both ends of different arc segments, is used to limit the rotational position of the locking plate;

[0009] An electronic lock includes a controllable movable locking component, which locks and releases the lock plate by controlling its position changes;

[0010] The limiting post is located at the limiting step and is used to fix the rotating state of the locking plate.

[0011] As a preferred embodiment of this utility model, the locking plate is provided with a large arc segment, a medium arc segment and a small arc segment in sequence on its periphery.

[0012] As a preferred technical solution of this utility model, the limiting step is formed in the transition area between the large arc segment, the medium arc segment and the small arc segment. It is composed of the connecting lines at both ends of the adjacent arc segments, including the first limiting step between the large arc segment and the medium arc segment, the second limiting step between the medium arc segment and the small arc segment and the third limiting step between the small arc segment and the large arc segment.

[0013] As a preferred embodiment of this utility model, the locking piece is provided with a guide groove inside, and the center of the guide groove is consistent with the rotation center of the locking piece.

[0014] As a preferred embodiment of this utility model, a guide post is embedded inside the guide groove.

[0015] As a preferred technical solution of this utility model, the lock plate, electronic lock, limiting post, and guide post are all set on the door. The door is provided with a knob or lock for driving the lock plate to rotate. When the lock plate rotates to the point where the large arc segment faces outward and is limited, the extended part of the large arc segment serves as the lock tongue.

[0016] As a preferred technical solution of this utility model, it also includes an emergency lock, wherein an emergency lock lever is provided on the lock shaft of the emergency lock.

[0017] As a preferred technical solution of this utility model, the electronic lock is an electromagnet, and the iron core of the electronic lock is provided with a pressure plate that can drive the iron core to retract. Rotating the emergency lock causes the emergency lock plate to press the pressure plate, causing the iron core to retract and the lock plate to be in an openable state.

[0018] As a preferred technical solution of this utility model, the iron core is controlled to retract by an electronic lock or an emergency lock to perform the open state, and the iron core is driven to spring up by a built-in spring to perform the locking state.

[0019] Compared with the prior art, the present invention provides a rotary locking structure, which has the following advantages:

[0020] This rotary locking structure simplifies the complex locking system that relies on a lock head combined with a push plate and surrounding parts. It effectively solves the problems of large space occupation and high structural redundancy in traditional locking systems for miniaturized, simplified, and weight-reducing products with top-opening doors. Through the cooperation of the limiting step and the limiting post, the rotation stroke of the lock plate is precisely controlled, reducing unnecessary movements. It is especially suitable for top-opening cabinets, which simplifies the structure, reduces the door's weight, lowers costs, and can also reduce the door size, preventing accidental falls and significantly improving safety. It provides an excellent solution for the locking mechanism of small and top-opening products. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the locking state structure of a rotary locking structure according to an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the unlocking state structure of a rotary locking structure according to an embodiment of the present invention;

[0023] Figure 3This is a front view of a door structure according to an embodiment of the rotary locking structure proposed in this utility model;

[0024] Figure 4 This is a schematic diagram of the locking structure of the second embodiment of the rotary locking structure proposed in this utility model;

[0025] Figure 5 This is a schematic diagram of a rotary locking method for a rotary locking structure proposed in this utility model.

[0026] Figure 6 This is a schematic diagram of the unlocking structure of an electronic lock plate according to Embodiment 2 of the rotary locking structure proposed in this utility model;

[0027] Figure 7 This is a schematic diagram of the unlocking structure of the emergency lock plate in Embodiment 2 of the rotary locking structure proposed in this utility model;

[0028] Figure 8 This is a rear view of a door structure according to Embodiment 2 of the rotary locking structure proposed in this utility model.

[0029] In the diagram: 1. Lock plate; 11. Large arc segment; 12. Medium arc segment; 13. Small arc segment; 14. Guide groove; 15. Guide post; 2. Limiting step; 21. First limiting step; 22. Second limiting step; 23. Third limiting step; 3. Electronic lock; 31. Iron core; 32. Pressure plate; 4. Limiting post; 41. Lock stop post; 42. Opening stop post; 5. Door; 51. Knob; 6. Emergency lock; 61. Emergency lock release plate. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Example 1, please refer to Figure 1-4 A rotary locking structure includes a locking plate 1, which is composed of arc segments of unequal diameter. By rotating and switching different arc segments, different distances from the center of the locking plate 1 to the edge can be obtained.

[0032] The limiting step 2, formed by the connecting lines at both ends of different arc segments, is used to limit the rotational position of the locking piece 1.

[0033] The electronic lock 3 includes a controllable movable locking component. By controlling the position change of the component, the locking and releasing of the lock plate 1 can be achieved. The electronic lock 3 can be controlled by fingerprint lock, password lock, or other methods.

[0034] The limiting post 4 is located at the limiting step 2 and is used to fix the rotating state of the locking piece 1.

[0035] As a specific technical solution in this embodiment, the locking piece 1 is provided with a large arc segment 11, a medium arc segment 12 and a small arc segment 13 in sequence on its periphery.

[0036] In this implementation scheme, a three-segment arc difference design is used to achieve rapid switching of the locking state. The large arc segment 11 serves as the only effective locking tongue, providing anti-shear support. When the large arc segment 11 is fully retracted, it engages the locking mechanism. The medium arc segment 12 serves as the unlocking limit for the lock plate 1, avoiding unnecessary rotation and making operation more convenient. Furthermore, the large arc segment 11, medium arc segment 12, and small arc segment 13 are integrally formed with the lock plate 1, improving the structural strength of the lock plate 1 and further preventing prying.

[0037] As a specific technical solution of this embodiment, the limiting step 2 is formed in the transition area between the large arc segment 11, the middle arc segment 12 and the small arc segment 13. It is composed of the connecting lines at both ends of the adjacent arc segments, including the first limiting step 21 between the large arc segment 11 and the middle arc segment 12, the second limiting step 22 between the middle arc segment 12 and the small arc segment 13 and the third limiting step 23 between the small arc segment 13 and the large arc segment 11.

[0038] In this implementation scheme, when the locking plate 1 rotates to the third limiting step 23 and is locked with the limiting post 4, the locking plate 1 remains locked. At the same time, the iron core 31 of the electromagnet pops out and locks the first limiting step 21. When the locking plate 1 rotates to the second limiting step 22 and is locked with the limiting post 4, the locking plate 1 remains unlocked. The three limiting steps 2 are distributed at the same angle to ensure that the rotation angle of the locking plate 1 is precise and controllable, reduce unnecessary rotation, and make the unlocking and locking operations more convenient, faster and more efficient. At the same time, it reduces the positioning and calibration burden of the electronic lock 3.

[0039] As a specific technical solution of this embodiment, the locking piece 1 is provided with a guide groove 14 inside, the center of the guide groove 14 is consistent with the rotation center of the locking piece 1, and a guide post 15 is embedded inside the guide groove 14.

[0040] In this embodiment, the end of the guide post 15 away from the guide groove 14 is fixed to the door 5. When the lock plate 1 rotates, the guide groove 14 slides along the guide post 15. The guide groove 14, in conjunction with the guide post 15, can provide precise guidance for the rotation of the lock plate 1. The end of the guide post 15 away from the door 5 is provided with a circular groove that clamps the two sides of the guide groove 14. Both sides of the inner wall of the circular groove and the two sides of the guide groove 14 are smooth, which reduces frictional resistance and makes the zero-gap rotation smoother. It can not only guide the rotation of the lock plate 1, but also prevent the lock plate 1 from axially shaking and provide anti-pry support.

[0041] As a specific technical solution of this embodiment, the lock plate 1, electronic lock 3, limiting post 4, and guide post 15 are all disposed on the door 5. The door 5 is provided with a knob 51 or lock for driving the lock plate 1 to rotate. When the lock plate 1 rotates to the point where the large arc segment 11 faces outward and is limited, the extended part of the large arc segment 11 serves as the lock tongue.

[0042] In this implementation scheme, the lock tongue state adapts to the door frame structure 5, the extension length of the large arc segment 11 can be customized to meet the needs of different door thicknesses 5, the knob 51 drive avoids the axial space occupation of the traditional lock cylinder, the lock plate 1 is driven by the knob 51, after the electronic lock 3 and emergency lock 6 are unlocked, the lock plate 1 can be unlocked directly by rotating the knob 51. When the lock plate 1 is driven by the lock, after the electronic lock 3 and emergency lock 6 are unlocked, the lock needs to be unlocked by the key to drive the lock plate 1 to unlock and lock.

[0043] As a specific technical solution of this embodiment, it also includes an emergency lock 6. The lock shaft of the emergency lock 6 is provided with an emergency lock 6 striking plate. The electronic lock 3 is an electromagnet. The iron core 31 of the electronic lock 3 is provided with a pressure plate 32 that can drive the iron core 31 to retract. Rotating the emergency lock 6 drives the emergency lock 6 striking plate to press the pressure plate 32, causing the iron core 31 to retract and the lock plate 1 to be in an openable state. The iron core 31 is controlled to retract by the electronic lock 3 or the emergency lock 6 to execute the open state, and the built-in spring drives the iron core 31 to spring up to execute the locking state.

[0044] In this implementation scheme, the end of the emergency lock 6 striking plate away from the locking shaft of the emergency lock 6 is arc-shaped. The electronic lock 3 can be a combination of an electromagnet or a motor-driven locking tongue. During mechanical emergency unlocking, the arc-shaped end of the striking plate contacts the pressure plate 32 and presses down on the pressure plate 32. This design can effectively reduce the friction between the emergency lock 6 striking plate and the pressure plate 32. The redundant locking mechanism of the electromagnet's built-in spring ensures that it automatically enters the safe state when the power is cut off.

[0045] A rotary locking method includes the following steps:

[0046] S1. Initial state setting: The lock plate 1 maintains its initial position 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 pop-out state under the action of the spring, and is locked by engaging the current limit step 2. In the default state, the large arc segment 11 faces outward, and its protruding part is used as the lock tongue to be embedded in the lock hole of the door frame 5.

[0047] S2. Electronic unlocking and rotation: After receiving the unlocking signal, the electronic lock 3 energizes the electromagnet to retract the iron core 31, which disengages from the limit step 2 and releases the lock piece 1. The lock piece 1 is driven to rotate by the knob 51, and the guide groove 14 slides along the guide post 15, switching to the small arc segment 13 facing outward.

[0048] S3. Switching between limit and lock states: When the lock plate 1 rotates to the large arc segment 11 facing outward, the limit post 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 lock. If switched to the small arc segment 13 facing outward, the lock tongue is fully retracted and the door 5 is in an openable state.

[0049] S4. Emergency unlocking mechanism: In special circumstances, an emergency unlocking method can be adopted. Rotate the emergency lock 6 to drive the emergency lock plate 61 to press down the electromagnet plate 32, forcibly contract the iron core 31 to release the lock, and manually rotate the lock plate 1 to the open position. The guide post 15 and the limit post 4 work together to prevent unexpected displacement.

[0050] S5, State Reset: After closing door 5, rotate lock plate 1 in the opposite direction. Large arc segment 11 extends again as lock tongue. Electromagnet core 31, which has been pressed by large arc segment 11, automatically springs into the corresponding limit step 2 under the action of internal spring and enters locking mode. After the system detects the position signal, the electromagnet is de-energized and enters constant lock mode.

[0051] S6. Anti-pry protection: Increase the thickness of the lock plate 1 to ensure anti-pry strength; when an abnormal external force is applied to the lock plate 1, the limiting post 4 and the iron core 31 bear the radial force of the lock plate 1 to prevent the limiting step 2 from disengaging. The screw fastening of the knob 51 shaft and the lock plate 1, along with the rigid cooperation between the guide post 15 and the guide groove 14, prevents the axial displacement of the lock plate 1. The guide post 15 pulls the lock plate 1 through the circular groove, increasing the prying force that the lock plate 1 can withstand.

[0052] Example 2, please refer to Figure 1-8 A rotary locking structure, comprising:

[0053] Locking piece 1 is composed of arc segments of unequal diameter. By rotating and switching different arc segments, different distances from the center of locking piece 1 to the edge can be obtained.

[0054] The limiting step 2 is formed by the connecting lines at both ends of different arc segments and is used to limit the rotational position of the locking piece 1;

[0055] The electronic lock 3 includes a controllable movable locking component, which controls the position change of the locking plate 1 to lock and release;

[0056] The limiting post 4 is located at the limiting step 2 and is used to fix the rotating state of the locking piece 1.

[0057] 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 arranged sequentially 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 it is composed of the connecting lines at both ends of the adjacent arc segments.

[0058] In this embodiment, the large arc segment 11 and the small arc segment 13 of the locking piece 1 are integrally formed, which improves the overall structural strength of the locking piece 1.

[0059] As a specific technical solution in this embodiment, the electronic lock 3 is an electromagnet. Under normal circumstances, the iron core 31 of the electronic lock 3 is driven by the built-in spring to spring up and stop the limiting step 2. The stopping and passing states are achieved by the springing and contraction of the iron core 31.

[0060] As a specific technical solution in this embodiment, the limiting post 4 includes a locking post 41 and an opening post 42, which correspond to the two limiting steps 2 respectively. The locking post 41 can be omitted by extending the large arc segment 11 of the lock plate 1. In this case, the opening post 42 can also serve as the locking post 41.

[0061] In this implementation scheme, the two limiting steps 2 correspond to the locking stop post 41 and the opening stop post 42 of the door 5, respectively. When locked, the lock plate 1 rotates, and the large arc segment 11 forms a latch that locks the door frame 5. To prevent the lock plate 1 from rotating excessively, the locking stop post 41 is set to lock the limiting steps 2, limiting the rotation stroke of the lock plate 1, making operation more convenient. When the limiting step 2 on the lock plate 1 abuts against the locking stop post 41, the other limiting step 2 avoids the iron core 31 of the electromagnet. The iron core 31 rebounds and rises to block one side of the limiting step 2, thus locking the lock plate 1. When unlocking, the electronic lock 3 attracts the iron core 31 to descend and disengage from the limiting step 2. At this time, the lock plate 1 will naturally deflect due to the influence of the center of gravity, but will not completely disengage. At the position away from the door frame 5, the user needs to manually rotate the lock plate 1 using the knob 51. When the lock plate 1 rotates, it causes the limiting step 2 to contact the door opening stop post 42, indicating that the large arc segment 11 is completely inward and the small arc segment 13 is outward. The lock tongue of the large arc segment 11 is completely disengaged from the door frame 5, and the door 5 can be opened by pulling the knob 51. After unlocking, the electronic lock 3 does not control the magnet to engage. The magnet automatically rebounds and contacts the large arc segment 11 of the lock plate 1, so that the user does not need to hold the lock plate 1 with the knob 51 to keep it in the unlocked state. The lock plate 1 will not automatically swing down due to the center of gravity. After locking, the iron core 31 can automatically rebound and lock on one side of the limiting step 2. The structure is simple, the design is ingenious, it is economical, and has broad application prospects.

[0062] As a specific technical solution of this embodiment, it also includes an emergency lock 6, on which an emergency lock 6 striking plate is provided, and an arc segment is provided below the emergency lock 6 striking plate.

[0063] In this implementation scheme, the arc segment not only avoids the stop post 42 of the door opening 5, but also makes the arc segment rotate more smoothly against the pressure plate 32 when the user uses the key to unlock the emergency lock 6, reducing wear and making it more convenient to use. The emergency lock 6 is a key mechanical lock with a limit function to prevent the emergency lock 6 plate from rotating excessively. The stop post 42 of the door opening 5 can also limit the travel of the emergency lock 6 plate. If more precise control of the travel is required, a stop post can be added to the door 5 for travel control.

[0064] As a specific technical solution in this embodiment, the core 31 of the electronic lock 3 is provided with a pressure plate 32 that can drive the electromagnet core 31 to retract. Rotating the emergency lock 6 causes the emergency lock 6 to press the pressure plate 32, causing the electromagnet core 31 to retract, so that the lock plate 1 is in an openable state. The lock plate 1 is installed on a knob 51 or lock for driving the lock plate 1 to rotate. The core 31 is controlled to retract by the electronic lock 3 or the emergency lock 6 to execute the open state, and the built-in spring drives the electromagnet core 31 to spring up to execute the locking state.

[0065] Compared to the above embodiments, the lock plate 1 in this embodiment eliminates the guide post 15, guide groove 14, and middle arc segment 12, and adds a limiting post 4 to cooperate with the limiting step 2 to limit the locking and unlocking states of the lock plate 1. The design of the lock plate 1 is more streamlined than that of the lock plate 1 in the above embodiments, reducing the number of parts, reducing processing complexity and assembly costs. Only the large and small arc segments 13 and the corresponding limiting steps 2 are retained, making the switching of the locking state more intuitive and reducing the number of user operation steps. The addition of the door opening 5 stop post 42 and the door locking 5 stop post 41 to cooperate with the limiting step 2 provides double limiting to prevent the lock plate 1 from shifting. The arc segment design of the emergency lock 6 reduces friction with the pressure plate 32, making emergency unlocking smoother.

[0066] Both Embodiment 1 and Embodiment 2 feature excellent anti-pry design: the one-piece molding of the locking plate 1 and the rigid fit of the limiting components (limiting post 4 and limiting step 2) effectively resist external force damage;

[0067] Redundant safety mechanism: Electronic lock 3 and emergency lock 6 provide double protection. The spring automatically locks when power is lost, taking into account both intelligent control and mechanical reliability;

[0068] Space adaptability: The knob 51 drive reduces axial space occupation, and the arc length can be customized to adapt to different door thickness requirements. It reduces the space layout of the door 5, reduces the number of parts such as lock head, push plate, baffle, and fixing plate, and can also reduce the size of the door 5, greatly reducing weight and lowering costs. Increasing the thickness and size of the lock plate 1 can increase the anti-pry strength of the lock plate 1. Theoretically, it can meet the requirements for the anti-pry strength of the lock plate 1. With a smaller part space layout and lighter weight, it can meet the anti-pry strength of the lock plate 1, providing a good solution for the locking mechanism of small products and top-opening door 5 products.

[0069] In summary, this rotary locking structure simplifies the complex locking system that relies on a lock head combined with a push plate and surrounding parts. It effectively solves the problems of large space occupation and high structural redundancy in traditional locking systems for miniaturized, simplified, and weight-reducing products with top-opening doors. Through the cooperation of the limiting step 2 and the limiting post 4, the rotation stroke of the lock plate 1 is precisely controlled, reducing unnecessary movements. It is especially suitable for top-opening cabinets, which simplifies the structure, reduces the weight of the door, lowers costs, and can also reduce the size of the door to prevent accidental falls, significantly improving safety. It provides an excellent solution for the locking mechanism of small products and top-opening doors.

[0070] It should be noted that, in this document, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0071] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which 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 diameter. By rotating and switching different arc segments, different distances from the center of the locking piece (1) to the edge can be obtained. The limiting step (2) is formed by the connecting lines at both ends of different arc segments and is used to limit the rotation position of the locking piece (1); An electronic lock (3) includes a controllable movable locking component, which locks and releases the locking plate (1) by controlling its position change; The limiting post (4) is located at the limiting step (2) and is used to fix the rotating state of the locking piece (1).

2. The rotary locking structure according to claim 1, characterized in that: The locking plate (1) is provided with a large arc segment (11), a medium arc segment (12) and a small arc segment (13) in sequence on its periphery.

3. The rotary locking structure according to claim 1, characterized in that: The limiting step (2) is formed in the transition area between the large arc segment (11), the middle arc segment (12) and the small arc segment (13). It is composed of the connecting lines at both ends of the adjacent arc segments, including the first limiting step (21) between the large arc segment (11) and the middle arc segment (12), the second limiting step (22) between the middle arc segment (12) and the small arc segment (13), and the third limiting step (23) between the small arc segment (13) and the large arc segment (11).

4. The rotary locking structure according to claim 1, characterized in that: The locking piece (1) has a guide groove (14) inside, and the center of the guide groove (14) is consistent with the rotation center of the locking piece (1).

5. A rotary locking structure according to claim 4, characterized in that: The guide groove (14) is fitted with a guide post (15).

6. The rotary locking structure according to claim 1, characterized in that: The lock plate (1), electronic lock (3), limiting post (4), and guide post (15) are all installed on the door (5). The door (5) is provided with a knob (51) or lock for driving the lock plate (1) to rotate. When the lock plate (1) rotates to the point where the large arc segment (11) faces outward and is limited, the extended part of the large arc segment (11) serves as the lock tongue.

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