Top and bottom lock and cabinet door applying same

Abstract

The utility model relates to the technical field of locks, and particularly provides a heaven and earth lock and a cabinet door applying the heaven and earth lock, the heaven and earth lock comprises a lock cylinder, a gear shaft, a rack, a spring bolt assembly and a shell, the lock cylinder drives the gear shaft to rotate and drives the rack and a connecting rod to move up and down, so that locking or unlocking of the spring bolt assembly is achieved, the structure is compact and simple, and the cost is low. Meanwhile, clear operation feedback is provided through the positioning feedback assembly, and abnormal sound is eliminated through a soft piece; the heaven and earth lock is installed in the cabinet door body in an embedded mode and is hidden and attractive, and therefore the cabinet door has the advantages of being compact and simple in structure, convenient to install, high in applicability, clear in operation feedback, stable in operation, free of abnormal sound and hidden and attractive.

Description

Technical Field

[0001] The present application relates to the technical field of locks, and in particular to a ceiling lock and a cabinet door using the ceiling lock. Background Art

[0002] With the development of the times and the improvement of people's living standards, people's requirements for furniture are getting higher and higher. They often pay attention to the safety of furniture cabinets while also considering aesthetics. However, the common floor locks on the market currently have many problems and cannot meet these needs.

[0003] The existing top and bottom locks are large in size and are basically used for wooden cabinet doors. They are installed on the back of the cabinet door. The lock body and the connecting rod mechanism are visible after the cabinet door is opened. They cannot be installed in a hidden manner and take up space inside the cabinet.

[0004] Especially for the aluminum-framed glass doors commonly used nowadays, the aluminum frame is small in size, making it difficult to install these sky and earth locks, and the aluminum-framed glass doors generally have transparent glass in the middle, which cannot be hidden and installed, greatly affecting the aesthetics.

[0005] Furthermore, existing locks lack clear feedback when unlocking or locking. This lack of proper transmission feedback prevents users from feeling the proper tactile feedback during operation, making it difficult to determine whether the lock or unlock has been completed. This can lead to misoperation and continued rotation of the lock cylinder, potentially damaging the rack or cylinder.

[0006] The lock tongues of existing top and bottom locks are divided into two types: straight-insert type and rotary lock hook type. The connecting rod mechanism of this type of top and bottom lock means that it can only be installed on the back of the cabinet door and cannot be hidden inside the cabinet door. It is clearly visible after the cabinet door is opened. In addition, the rotary lock hook type top and bottom lock must be installed with a fixed lock buckle on the top plate of the cabinet so that the lock hook can rotate and hook to complete the locking. However, this fixed lock buckle protrudes from the top plate of the cabinet and will be blocked inside the cabinet, making it inconvenient to take items, and the protrusion affects the appearance.

[0007] The weight of the connecting rod is also a problem. Existing connecting rods for ceiling locks are typically made of solid iron, making them difficult to secure to the lock assembly and heavy, making operation difficult. Furthermore, the connecting rod can easily collide with the cabinet door and make unusual noises when in motion, affecting the overall feel and quality of the furniture. This shortens the lifespan of the ceiling lock and degrades the user experience.

[0008] In view of the above problems, the existing technology is in urgent need of improvement. Utility Model Content

[0009] The purpose of the present application is to provide a ceiling lock and a cabinet door using the ceiling lock, which have the advantages of compact structure, easy installation, strong applicability, clear operation feedback, and smooth operation without abnormal noise.

[0010] This application provides a sky and earth lock, the technical solution is as follows:

[0011] It includes: a lock core, a gear shaft, a rack, a lock tongue assembly and a shell, the lock core includes a driving part and a first connecting part, the first connecting part is located at the tail of the lock core; the gear shaft includes a gear part and a second connecting part, the lock core and the gear shaft are connected to each other through the first connecting part and the second connecting part to realize stress transmission; the gear shaft and the rack are respectively installed on the shell, and an axial hole is provided on the shell, and the gear shaft is installed in the axial hole; the rack includes a rack part, and the shell is provided with a mounting groove for accommodating the rack part in the vertical direction, and one end of the mounting groove has an opening, the rack part is installed in the mounting groove and meshes with the gear part of the gear shaft; the rack is detachably connected to the lock tongue assembly; when the driving part is driven by an external force to rotate and drives the gear part to rotate, the gear part drives the rack to move up and down in the vertical direction through meshing with the rack part.

[0012] Furthermore, the present application also proposes that it also includes a connecting rod, and the rack also includes a third connecting part, the third connecting part of the rack is placed outside the shell, one end of the connecting rod is detachably mounted on the third connecting part of the rack, and the other end of the connecting rod is detachably mounted with a lock tongue assembly; the end of the mounting groove close to the rack part is a closed structure, and the closed structure is used to limit the rack that is driven to move up and down.

[0013] Furthermore, the present application also proposes that there are two racks, and the two racks are symmetrically arranged on both sides of the gear shaft, and the gear part of the gear shaft is simultaneously engaged with the rack parts of the two racks; a section of the rack part close to the closed end of the mounting groove is not provided with teeth.

[0014] Furthermore, the present application also proposes that a boss is provided on the end of the rack portion close to the closed end of the mounting groove toward the gear portion.

[0015] Furthermore, the present application also proposes that the lock tongue assembly includes a lock tongue joint and a lock tongue, one end of the lock tongue joint is fastened to the connecting rod, and the other end is fastened to the lock tongue, and the lock tongue, lock tongue joint and the connecting rod are coaxial.

[0016] Furthermore, the present application also proposes that the lock tongue assembly includes a lock tongue joint and a lock tongue, and a mounting hole is respectively provided at the left and right ends of the lock tongue joint, the connecting rod is perpendicular to the lock tongue joint and fastened to one of the mounting holes, the lock tongue is perpendicular to the lock tongue joint and fastened to the other mounting hole, and the lock tongue and the connecting rod are located on opposite sides of the lock tongue joint.

[0017] Furthermore, the present application also proposes that it also includes a positioning feedback component, which is a spring and a marble, one end of the spring elastically abuts against the shell, and the other end abuts against the marble, so that the marble elastically abuts against the rack part of the rack; a first groove and a second groove are sequentially provided on the rack part of the rack near the third connecting part; when the rack moves up and down, the elastic force generated by the compression deformation of the spring acts on the marble, and when the marble abuts against the groove of the rack part, the driving part will generate feedback that the rotational resistance increases, and through the cooperation between the marble and the two grooves, the feedback rack has moved to the unlocked position or the locked position; when the rack moves to the unlocked position, the marble of the positioning feedback component elastically abuts against the first groove; when the rack moves to the locked position, the marble of the positioning feedback component elastically abuts against the second groove.

[0018] Furthermore, the present application also proposes that the connecting rod has a hollow structure.

[0019] Furthermore, the present application also proposes that the outer surface of the connecting rod is covered with one or more soft parts.

[0020] Furthermore, the present application also proposes a cabinet door using the above-mentioned top and bottom locks, wherein the top and bottom locks are embedded in the door body.

[0021] From the above, it can be seen that the present application provides a top and bottom lock and a cabinet door using the top and bottom lock, which include a lock core, a gear shaft, a rack, a lock tongue assembly and a shell. The gear shaft is driven to rotate by the lock core, driving the rack to move up and down, thereby realizing the locking or unlocking of the lock tongue assembly. This design makes the top and bottom lock compact and convenient for hidden installation in the door body. At the same time, it provides clear operation feedback through the positioning feedback assembly, and uses soft parts to eliminate abnormal noise. It has the advantages of compact structure, easy installation, strong applicability, clear operation feedback, and smooth operation without abnormal noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure of a sky lock housing provided in an embodiment of the present application;

[0023] Figure 2 A schematic diagram of the disassembled housing structure of a sky and earth lock provided in an embodiment of the present application;

[0024] Figure 3 A schematic diagram of a rack structure of a top and bottom lock provided in an embodiment of the present application;

[0025] Figure 4 A schematic diagram of the connection structure between a lock cylinder and a housing of a top and bottom lock provided in an embodiment of the present application;

[0026] Figure 5 A schematic diagram of the connection structure between a lock cylinder and a housing of a top and bottom lock provided in another embodiment of the present application;

[0027] Figure 6 This is a schematic diagram of a cabinet door body using the ceiling and ceiling lock provided by an embodiment of the present application;

[0028] Figure 7 This is a schematic diagram of a door structure disassembled using the top and bottom locks provided by an embodiment of the present application;

[0029] Figure 8 This is a schematic diagram of a door structure disassembled using a top and bottom lock provided by another embodiment of the present application;

[0030] Figure 9 A schematic diagram of a cabinet door structure in an unlocked state provided in an embodiment of the present application;

[0031] Figure 10 A schematic diagram of a cabinet door structure in a locked state provided in an embodiment of the present application.

[0032] In the figure: 1. Lock core; 2. Gear shaft; 3. Rack; 4. Lock tongue assembly; 5. Housing; 6. Connecting rod; 7. Positioning feedback assembly; 8. Cabinet; 9. Door; 11. Driving part; 12. First connecting part; 21. Gear part; 22. Second connecting part; 31. Rack part; 32. Third connecting part; 41. Lock tongue joint; 42. Lock tongue; 51. Shaft hole; 52. Mounting slot; 61. Soft part; 71. Spring; 72. Marble; 81. Lock seat; 311. First groove; 312. Second groove; 313. Boss. DETAILED DESCRIPTION

[0033] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0034] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] Please refer to Figures 1 to 5:This application proposes an innovative top and bottom lock design. The design includes a lock core 1, a gear shaft 2, a rack 3, a lock tongue assembly 4 and a housing 5. The lock core 1 includes a drive portion 11 and a first connecting portion 12, and the gear shaft 2 includes a gear portion 21 and a second connecting portion 22. The lock core 1 and the gear shaft 2 are interconnected through the first connecting portion 12 and the second connecting portion 22 to achieve stress transmission. The gear shaft 2 and the rack 3 are respectively mounted on the housing 5, and an axial hole 51 is provided on the housing 5, and the gear shaft 2 is mounted in the axial hole 51.

[0036] The rack 3 includes a rack portion 31. The housing 5 is provided with a mounting slot 52 in the vertical direction to accommodate the rack portion 31. The mounting slot 52 is open at one end. The rack portion 31 is mounted within the mounting slot 52 and meshes with the gear portion 21 of the pinion shaft 2. This design allows the rack 3 to move freely in the vertical direction while maintaining meshing with the pinion shaft 2. The open design of the mounting slot 52 is a key innovation, allowing the exposed end of the rack 3 to move away from the housing 5 during linear motion, thereby increasing the range of motion of the rack 3.

[0037] The rack 3 and the lock tongue assembly 4 are detachably connected, increasing the adaptability of the lock and allowing adjustments to varying door panel thicknesses or the requirements of the lock tongue 42. When the drive portion 11 of the lock cylinder 1 rotates due to an external force, it drives the gear portion 21 to rotate. The gear portion 21, through engagement with the rack portion 31, converts the rotational motion into vertical movement of the rack 3.

[0038] The present invention's lock, through its ingenious structural design, successfully overcomes the existing issues of bulk and difficulty installing on thin door panels. Compared to traditional locks, the present invention's design maintains an overall thickness of less than 8mm, nearly half the thickness of the typical 15-20mm thick locks. This compact design not only allows the lock to be completely concealed within thin door panels, but also significantly improves installation convenience and aesthetics.

[0039] Furthermore, compared to conventional direct-link transmission mechanisms, the rack-and-pinion transmission mechanism of this application achieves a greater travel of the lock tongue 42 within the same space, improving locking reliability and operational fluidity. The detachable lock tongue 42 design addresses the poor adaptability of conventional locks, allowing users to replace different lock tongues 42 according to actual needs, thereby improving the product's versatility and practicality.

[0040] In general, the top and bottom lock design of this application successfully solves multiple technical problems such as thin door panel installation, locking reliability, and adaptability through innovative structure and ingenious mechanism arrangement, providing a new technical solution for the field of furniture safety locks.

[0041] Please refer to Figure 7 and Figure 8: In some of the above embodiments, during the implementation of the present application, there is still the problem of how to achieve the connection between the rack 3 and the connecting rod 6 and ensure the strength and stability of the connecting rod 6 when the shell 5 is relatively thin.

[0042] In this regard, the present application further proposes that it also includes a connecting rod 6, and the rack 3 also includes a third connecting part 32, the third connecting part 32 is externally placed on the shell 5, one end of the connecting rod 6 is detachably mounted on the third connecting part 32 of the rack 3, and the other end of the connecting rod 6 is detachably mounted with a lock tongue assembly 4; the installation groove 52 is a closed structure at one end close to the rack part 31, and the closed structure is used to limit the rack 3 that moves up and down under the drive action.

[0043] The connecting rod 6 serves as a transmission component between the rack 3 and the lock tongue assembly 4. The detachable installation method facilitates maintenance and replacement. The design of the third connecting part 32 being external to the shell 5 solves the problem of the size limitation of the shell 5 and provides sufficient space for the connection between the rack 3 and the connecting rod 6. The mounting groove 52 with a closed structure at one end limits the movement of the rack 3, preventing the rack 3 from being disengaged from the mounting groove 52 due to interference rotation by the user during the unlocking process, thereby ensuring the reliability of the sky and earth lock. These technical features cooperate with each other to solve the problem of connecting the rack 3 and the connecting rod 6 in a thin-walled shell 5. The external third connecting part 32 allows the use of a thicker connecting rod 6, ensuring the strength of the connecting rod 6. At the same time, the design of the third connecting part 32 places the upper and lower groups of connecting rods 6 on the same axis, thereby improving the overall stability and reliability of the sky and earth lock. The mounting groove 52 with a closed structure prevents the user from performing interference operations during the unlocking process, thereby increasing the reliability of the sky and earth lock.

[0044] In this application, the connecting rod 6 can be made of a variety of materials and structural designs. For example, it can be made of metal materials such as aluminum alloy or stainless steel to ensure sufficient strength. The cross-section of the connecting rod 6 can be circular, square, or other polygonal, and the most suitable shape can be selected according to specific needs. The length of the connecting rod 6 can be adjusted according to the thickness of the door body 9 and is generally within the range of 50-200 mm.

[0045] The design of the third connecting portion 32 can be varied. It can be an integrally formed part of the rack 3 or separately manufactured and fixedly connected to the rack 3. The third connecting portion 32 can be cylindrical, square, or other geometrically shaped to facilitate secure connection with the connecting rod 6. The thickness of the third connecting portion 32 is typically in the range of 9-12 mm to ensure sufficient strength without excessively increasing the overall size.

[0046] The enclosing structure of the mounting slot 52 can take various forms. For example, it can be a baffle integrally formed with the housing 5, or a separately manufactured stopper secured to the housing 5. The height of the enclosing structure is typically designed to be approximately 1-2 mm from the rack 3. This allows the rack 3 to be restricted in movement without affecting its normal motion.

[0047] These features are closely intertwined and interactive. The external design of the third connecting portion 32, combined with the removable mounting of the connecting rod 6, not only addresses the lack of space within the thin housing 5 but also provides greater flexibility for maintenance and replacement. Furthermore, this design allows for the use of a thicker, stronger connecting rod 6, thereby improving the strength and stability of the entire lock. The closed structure of the mounting slot 52 interacts with the movement of the rack 3, ensuring normal movement while preventing potential malfunctions caused by excessive movement.

[0048] In practical application, the technical solution of this application can be implemented as follows: Taking a lock with a housing 5 having a thickness of 8 mm as an example, the third connecting portion 32 of the rack 3 can be designed as a cylinder with a diameter of 10 mm and a height of 5 mm. The connecting rod 6 is made of aluminum alloy, has an outer diameter of 8 mm, an inner diameter of 6 mm, and a hollow structure with a length of 100 mm. The connecting rod 6 is connected to the third connecting portion 32 via a threaded connection, facilitating disassembly and adjustment. The mounting slot 52 is enclosed by an integrally formed baffle, which is 1.5 mm from the rack 3.

[0049] During use, when the user rotates the lock cylinder 1, the gear shaft 2 drives the rack 3 up and down. The rack 3, via the external third connection portion 32, drives the connecting rod 6, which in turn drives the bolt assembly 4 to lock or unlock. Because the third connection portion 32 is located outside the housing 5, the connecting rod 6 has sufficient space and strength for connection, even in thin housings. Furthermore, the closed structure of the mounting slot 52 ensures that the rack 3 does not disengage during movement, enhancing the reliability of the lock.

[0050] Compared to existing technologies, the technical solution of this application offers significant advantages. Conventional locks are often difficult to install on thin door panels due to the size limitations of the housing 5, or they necessitate the use of a thinner, less-strong connecting rod 6, which compromises the overall performance of the lock. Through ingenious structural design, this application achieves a reliable connection between the rack 3 and the connecting rod 6 while maintaining the thinness of the housing 5, ensuring the strength of the connecting rod 6 and the stability of the overall structure. This design not only addresses space limitations but also improves the overall performance, reliability, and durability of the lock, enabling it to better meet the dual demands of safety and aesthetics for modern furniture.

[0051] Please refer to Figure 2 、 Figure 7 and Figure 8 : In some of the above embodiments, during the implementation of this application, there is still the problem of how to improve the stability and reliability of the sky and earth lock and prevent the rack 3 from separating from the gear shaft 2 during movement.

[0052] In this regard, the present application further proposes a technical solution in which two racks 3 are provided, and the two racks 3 are symmetrically arranged on both sides of the gear shaft 2, and the gear portion 21 of the gear shaft 2 is simultaneously engaged with the rack portions 31 of the two racks 3.

[0053] This technical solution achieves the following technical benefits by providing two counter-symmetrical racks 3 and simultaneously meshing the gear portion 21 of the pinion shaft 2 with both racks 3: First, the two counter-symmetrical racks 3 improve the structural stability of the lock. When the pinion shaft 2 rotates, the two racks 3 move simultaneously in opposite directions. This symmetrical movement balances the forces and reduces the potential for deflection or deformation caused by unilateral force. Second, the dual rack 3 design increases the contact area with the gear portion, improving transmission reliability. The simultaneous meshing of the gear portion with both racks 3 ensures more uniform force transmission and reduces the risk of wear or failure of a single rack 3. Third, this design enables more precise locking and unlocking operations. The synchronized movement of the two racks 3 ensures operational precision and improves the accuracy of locking and unlocking the lock. Finally, the dual rack structure enhances the overall load-bearing capacity of the lock. When subjected to external forces, the two racks 3 share the pressure, improving the lock's resistance to damage.

[0054] In the specific embodiment of the present application, the two racks 3 can adopt the same structural design but be mounted in an anti-symmetrical manner on either side of the gear portion 21. This symmetrical arrangement not only ensures structural balance but also simplifies the production and assembly process. The racks 3 can be made of a wear-resistant metal material, such as stainless steel or cemented carbide, to improve service life and reliability.

[0055] The gear portion 21 of the gear shaft 2 can adopt a double-sided gear design, with a gear positioned on each side of the shaft, each meshing with the rack 3 on the corresponding side. This design further increases the meshing area, improving transmission efficiency and stability. The gear tooth profile can adopt an involute tooth profile, which maintains a constant transmission ratio during transmission and reduces vibration and noise.

[0056] The meshing depth between rack 3 and gear is a critical parameter, generally recommended to be between 1 / 3 and 1 / 2 of the tooth height. Too shallow a meshing depth can lead to unstable transmission, while too deep a meshing depth can increase friction and resistance. In this application, the meshing depth can be set to approximately 2 / 5 of the tooth height to achieve the optimal balance.

[0057] The dual-rack design of this application forms a harmonious whole with the previous single-rack structure. The pinion shaft 2, acting as the intermediate link between the lock cylinder 1 and the rack 3, simultaneously drives both racks 3, improving transmission efficiency and enabling more precise position control. This design makes the entire locking and unlocking process smoother and more reliable, resolving the instability and imprecision issues that may exist with a single-rack structure.

[0058] During the locking process, when the user turns the lock cylinder 1, the gear shaft 2 begins to rotate. Because the gear portion 21 simultaneously meshes with two oppositely symmetrical racks 3, the rotational motion of the gear is converted into opposing linear motion of the two racks 3. This opposing motion not only balances the forces but also increases the speed of locking and unlocking. For example, if a single rack 3 moves 10mm in a single operation, a dual-rack 3 system can achieve the same locking effect by moving both racks 3 5mm each. This means that the user requires less force and a shorter operation time to complete locking or unlocking.

[0059] The dual-rack design also enhances the lock's resistance to vandalism. When an external force attempts to force the lock open, the applied force is distributed across the two racks 3, reducing the stress on each rack 3 and improving the overall lock's resistance to vandalism. Furthermore, because the two racks 3 are arranged in opposite directions, any attempt to unlock the lock by prying or vibrating is made more difficult by the counteracting forces on both sides.

[0060] A section of the rack portion 31 near the closed end of the mounting groove 52 is not provided with teeth. The length of this toothless section is usually between 5 mm and 20 mm. The toothless section can be smoothly polished to reduce friction with other components, and the edges can be slightly chamfered to avoid sharp edges.

[0061] In summary, the symmetrical dual-rack structure of this application effectively addresses the shortcomings of traditional locks in terms of stability, reliability, and operational efficiency. At the same time, traditional designs often overlook the handling of the rack's extreme motion positions, which can easily lead to rack disengagement. This application cleverly avoids this problem by providing a toothless section at the end of rack 3. These innovations not only improve the performance and reliability of the lock, but also enhance the product's durability and safety, providing new ideas and solutions for the design of furniture safety locks.

[0062] During the implementation of the present application, there is also the problem of further preventing the rack 3 from being separated from the gear shaft 2 during movement.

[0063] Please refer to Figure 2 and Figure 3To address this issue, in a specific embodiment of the present application, a boss 313 may be provided on the end of the rack portion 31 near the closed end of the mounting groove 52, facing the gear portion 21. The height of the boss 313 can be designed based on actual needs. Typically, it can be set to between 1 / 4 and 1 / 2 the thickness of the rack 3 to effectively prevent the rack portion 31 from disengaging from the gear portion 21 when the rack 3 reaches its extreme position, while not excessively interfering with normal gear meshing. The boss 313 can be designed to be arc-shaped or beveled to reduce impact forces on the gear portion 21.

[0064] The present invention realizes a more direct and effective anti-separation protection by providing a boss 313 on the rack 3. This innovative design improves the safety and reliability of the lock.

[0065] Please refer to Figure 7 : In some of the above embodiments, during the implementation of this application, there is still the problem of how to achieve a stable connection between the lock tongue assembly 4 and the connecting rod 6 and ensure the locking effect when the door body 9 is embedded and has lock seats 81 at the upper and lower ends.

[0066] In this regard, the present application further proposes a technical solution in which the lock tongue assembly 4 includes a lock tongue joint 41 and a lock tongue 42, one end of the lock tongue joint 41 is fastened to the connecting rod 6, and the other end is fastened to the lock tongue 42, and the lock tongue 42, the lock tongue joint 41 and the connecting rod 6 are on the same axis.

[0067] The lock tongue assembly 4 consists of a lock tongue joint 41 and a lock tongue 42. The lock tongue 42 is connected to the connecting rod 6 via the lock tongue joint 41. One end of the lock tongue joint 41 is tightly connected to the connecting rod 6, and the other end is tightly connected to the lock tongue 42, forming an integral structure. Designing the lock tongue 42, the lock tongue joint 41, and the connecting rod 6 on the same axis can ensure that the transmission of force is more direct and efficient. This coaxial design helps reduce stress concentration and improve the stability and reliability of the entire locking mechanism. When the lock core 1 drives the gear shaft 2 to rotate, the rotational motion can be converted into linear motion of the lock tongue 42 through the transmission of the rack 3 and the connecting rod 6, realizing the locking or unlocking function. Designing the lock tongue 42, the lock tongue joint 41, and the connecting rod 6 on the same axis is suitable for when the door body 9 is embedded. The lock tongue 42 directly extends into the lock seat 81 of the cabinet body 8 to achieve locking. This design not only simplifies the structure but also improves the strength and durability of the locking mechanism. At the same time, since all components are on the same axis, installation and adjustment become easier, which is conducive to improving product assembly efficiency and maintenance convenience.

[0068] In the embodiments of the present application, the locking tongue joint 41 can be connected to the connecting rod 6 and the locking tongue 42 in various ways. For example, the locking tongue joint 41 can be fastened to the connecting rod 6 and the locking tongue 42 using a threaded connection, a snap connection, or a sleeve connection. These connection methods can be selected based on the specific application scenario and requirements to ensure the firmness and reliability of the connection.

[0069] The design of the tongue connector 41 can be made of various materials and structures. For example, a metal material (such as stainless steel or aluminum alloy) can be used to provide sufficient strength and durability. Furthermore, the tongue connector 41 can be designed to be cylindrical or have a raised shape to increase the contact area with the connecting rod 6 and the tongue 42, further improving the stability of the connection.

[0070] The design of the lock tongue 42 can also be optimized according to different application requirements. For example, it can be designed to have a shape with an inclined surface so that the lock tongue 42 is smoother when entering the lock seat 81.

[0071] In this application, the coaxial design of the lock tongue 42, lock tongue joint 41, and connecting rod 6, combined with the design of the rack 3 and gear shaft 2, forms a highly efficient transmission system. When the lock cylinder 1 drives the gear shaft 2 to rotate, the meshing of the gear portion 21 and the rack portion 31 causes the rack 3 to produce linear motion. This motion is directly transmitted to the lock tongue joint 41 and lock tongue 42 via the connecting rod 6. Since all three are coaxial, force transmission is more direct, reducing energy loss and improving the response speed of locking and unlocking.

[0072] In addition, this coaxial design simplifies the structure of the entire locking mechanism, reducing production costs and maintenance difficulties.

[0073] Please refer to Figure 8 : In some of the above embodiments, during the implementation of this application, there is still the problem of how to extend the lock tongue 42 into the lock seat 81 of the cabinet body 8 and lock it when the door body 9 is external and there is no lock seat 81 at the upper and lower ends, so as to achieve the locking effect of the top and bottom locks in the cabinet body 8.

[0074] In this regard, the present application further proposes a technical solution in which the lock tongue assembly 4 includes a lock tongue joint 41 and a lock tongue 42, and a mounting hole is provided at the left and right ends of the lock tongue joint 41 respectively, the connecting rod 6 is perpendicular to the lock tongue joint 41 and fastened to one of the mounting holes, the lock tongue 42 is perpendicular to the lock tongue joint 41 and fastened to the other mounting hole, and the lock tongue 42 and the connecting rod 6 are located on opposite sides of the lock tongue joint 41.

[0075] This technical solution solves the problem of connecting the lock tongue 42 through the extended lock tongue joint 41 when the door body 9 is external and there is no lock seat 81 at the upper and lower ends by designing a lock tongue assembly 4 with a special structure, so that the lock tongue is extended into the cabinet body 8 and locked with the lock seat 81. The lock tongue joint 41 serves as a connecting piece, and mounting holes are set at both ends thereof, which are respectively used to connect the connecting rod 6 and the lock tongue 42. This design allows the lock tongue joint 41 to extend outward from the door body 9, and the lock tongue 42 connected to the extended part of the lock tongue joint 41 can be translated, and the radial locking position of the lock tongue 42 is extended, which can accommodate more locking scenarios. By installing the lock tongue 42 and the connecting rod 6 on opposite sides of the lock tongue joint 41, it is possible to ensure that the connecting rod 6 and the lock tongue 42 are respectively located at the upper and lower opposite ends of the lock tongue joint 41 while using fewer connecting parts to allow the lock tongue 42 to translate, and ensure that the lock tongue 42 is extended into the lock seat 81 at the upper and lower ends of the cabinet body 8 to complete the locking, thereby ensuring the realization of the locking function.

[0076] The design of the lock tongue 42 and the connecting rod 6 being located on opposite sides of the lock tongue joint 41 not only solves the spatial layout problem, but also improves the stability of the lock. When the lock tongue 42 is extended and locked, the thrust of the connecting rod 6 and the shearing force of the lock tongue 42 form a torque, which increases the stability of the entire locking structure.

[0077] The technical solution of this application solves the problem of locking an external door body 9 by extending the position of the lock tongue 42 through the design of the lock tongue joint 41. When the lock cylinder 1 drives the gear shaft 2 to rotate, the gear shaft 2 drives the rack 3 to move up and down, and the rack 3 drives the lock tongue joint 41 to move via the connecting rod 6. Because the lock tongue 42 is mounted on the other end of the lock tongue joint 41, this design allows the lock tongue 42 to extend out of the edge of the door body 9 and directly engage with the lock seat 81 on the cabinet body 8. This structural design overcomes the limitation of the external door body 9 having no lock seat 81 at the upper and lower ends, and realizes the application of the ceiling lock on the external door body 9.

[0078] Compared with the prior art, the solution of the present application has the following advantages: first, it solves the problem that the external door body 9 cannot use the traditional ceiling lock, and expands the application range of the ceiling lock; second, the design of the lock tongue joint 41 makes the position of the lock tongue 42 adjustable to adapt to doors 9 and cabinets 8 of different thicknesses; third, the design of installing the lock tongue 42 and the connecting rod 6 on opposite sides solves the spatial layout problem and improves the stability of the locking structure; finally, the entire structural design is compact and does not affect the aesthetics of the cabinet 8.

[0079] The specific embodiment is as follows: Taking a standard wardrobe as an example, the door body 9 is 18mm thick and is installed externally. The lock tongue joint 41 is made of 304 stainless steel, with a length of 40mm, a width of 20mm, and a thickness of 8mm. The mounting holes at both ends of the lock tongue joint 41 have a diameter of 6mm. One end is threadedly connected to the connecting rod 6 with a diameter of 6mm, and the other end is connected to the lock tongue 42 by a snap-on connection. The lock tongue 42 is 25mm long, 15mm wide, and 5mm thick. When the lock core 1 rotates and drives the gear shaft 2 to rotate, the rack 3 moves up and down, driving the connecting rod 6 to move 15mm. At this time, the lock tongue 42 can extend 10mm from the edge of the door body 9 through the transmission of the lock tongue joint 41, just entering the lock seat 81 on the cabinet body 8 to achieve locking. In addition, the lock tongue joint 41 can also be provided with a covering area. After installation, whether the lock is opened or closed, the opening opened for the lock tongue joint 41 on the door body 9 can be covered.

[0080] The technical solution of the present application has significant advantages over the existing technology. Traditional sky and earth locks can usually only be applied to embedded door bodies 9, and cannot be used on external door bodies 9. The present application successfully solves this problem through the clever design of the lock tongue assembly 4. The introduction of the lock tongue joint 41 not only enables the lock tongue 42 to extend out of the edge of the door body 9, but also provides a flexible installation method to adapt to door bodies 9 of different thicknesses. The design of installing the lock tongue 42 and the connecting rod 6 on opposite sides solves the spatial layout and improves safety performance. In addition, the structural design of the present application is compact and will not affect the overall appearance of the cabinet body 8, meeting the dual requirements of modern furniture for functionality and aesthetics. These innovations enable the present application to solve the locking problem of the external door body 9 while also improving the applicability and reliability of the sky and earth locks, providing new ideas and solutions for the design of furniture locks.

[0081] Please refer to Figure 2 : In some of the above embodiments, during the implementation of this application, there is still the problem of how to provide position feedback during the unlocking and locking process of the ceiling lock to prevent excessive rotation of the lock core 1 from causing damage to components.

[0082] In this regard, the present application further proposes a positioning feedback component 7, which is a spring 71 and a marble 72. One end of the spring 71 elastically abuts against the housing 5, and the other end abuts against the marble 72, so that the marble 72 elastically abuts against the rack portion 31 of the rack 3; a first groove 311 and a second groove 312 are sequentially provided on the rack portion 31 of the rack 3 near the third connecting portion 32; when the rack 3 moves up and down, the elastic force generated by the compression deformation of the spring 71 acts on the marble 72, and the marble 72 abuts against the groove of the rack portion 31 When the lock core 1 is unlocked, the drive unit 11 generates feedback indicating an increased rotational resistance. The cooperation between the marble 72 and the two grooves provides feedback that the rack 3 has moved to the unlocked or locked position. This allows the lock to be determined to be unlocked or locked, preventing further rotation of the drive unit 11 of the lock core 1 from damaging the rack 3 or the lock core 1. When the rack 3 moves to the unlocked position, the marble 72 of the positioning feedback assembly 7 elastically abuts the first groove 311. When the rack 3 moves to the locked position, the marble 72 of the positioning feedback assembly 7 elastically abuts the first groove 312. The positioning feedback assembly 7 can also be a leaf spring fixed to the housing 5, with the leaf spring being arched in the middle, and the arched portion elastically abutting against the rack portion 31.

[0083] The positioning feedback assembly 7 of the present application consists of a spring 71 and a ball 72, providing a simple and effective feedback mechanism. The elastic force generated by the compression of the spring 71 is transmitted to the rack 3 via the ball 72. When the ball 72 contacts the groove, a noticeable change in resistance is generated, thereby achieving position feedback. Two grooves (a first groove 311 and a second groove 312) are provided on the rack portion 31 near the third connecting portion 32, corresponding to the unlocked and locked positions, respectively. This design enables noticeable feedback at specific positions. When the rack 3 moves, the ball 72 slides on the surface of the rack 3. When the ball 72 enters the groove, a noticeable change in resistance is generated, causing a sudden increase in the rotational resistance of the drive unit 11 of the lock cylinder 1. This change is perceptible to the operator. Through this feedback mechanism, the operator can determine whether the lock has reached the unlocked or locked position, thereby avoiding further rotation of the drive unit 11 of the lock cylinder 1 and preventing damage to the rack 3 or the lock cylinder 1.

[0084] The present application also proposes using a reed fixed in the housing 5 as an alternative to the positioning feedback component 7 , where the arched portion of the reed contacts the rack portion 31 , thereby also realizing the position feedback function.

[0085] The groove design on rack 3 can be varied in many ways. Besides simple semicircular grooves, designs such as V-shaped, square, or trapezoidal shapes can also be employed to provide varying tactile sensations and feedback intensities. The groove depth and width can be adjusted as needed, typically ranging from 0.5mm to 2mm in depth and 1mm to 3mm in width. The groove position can also be fine-tuned to ensure optimal feedback placement.

[0086] The design of the positioning feedback assembly 7 in conjunction with the rack 3 and housing 5 is crucial. The preload of spring 71 must be carefully adjusted to ensure that the ball 72 provides sufficient feedback force without excessive resistance to the movement of rack 3. Typically, the preload of spring 71 can be set between 0.5N and 2N. The contact area between the ball 72 and the surface of rack 3 also needs to be considered: too large a contact area may increase friction, while too small a contact area may lead to inaccurate positioning.

[0087] As an alternative, reeds also require consideration in their design. Reeds can be made of materials such as spring steel, phosphor bronze, or titanium alloy, with thickness typically ranging from 0.1mm to 0.5mm. The height and shape of the reed arch directly impact the intensity and characteristics of the feedback, and these parameters can be adjusted to optimize the feedback effect.

[0088] Compared to existing locks that lack a clear feedback mechanism, the design of this application offers significant advantages. Traditional locks often rely on the operator's experience to determine if they are in place, making them prone to improper operation. However, this application achieves reliable position sensing through a simple and ingenious mechanical structure, eliminating the need for complex electronic components. This ensures functional functionality while maintaining a simple structure and cost-effectiveness, effectively extending the life of the lock and reducing maintenance and replacement requirements.

[0089] Please refer to Figure 7 and 8 In some of the above embodiments, during the implementation of the present application, there are still problems with the connection method between the connecting rod 6 and the third connecting portion 32 of the rack 3, and the problem that the connecting rod 6 is heavy and makes operation difficult.

[0090] In this regard, the present application further proposes a technical solution in which the connecting rod 6 is a hollow structure, the material of the connecting rod 6 is aluminum, and one end of the connecting rod 6 can be fastened to the third connecting portion 32 of the rack 3 by a top screw.

[0091] The hollow structure of the connecting rod 6 can effectively reduce the weight while maintaining sufficient strength. This design solves the problem that the connecting rod 6 is heavy and makes the operation difficult. The connecting rod 6 is made of aluminum, which can also effectively reduce the weight while ensuring strength, solving the problem that the connecting rod 6 is heavy and makes the operation difficult. The hollow structure of the connecting rod 6 also provides an internal space, which is convenient for connection using a fastening method. The connecting rod 6 is fastened to the third connecting part 32 of the rack 3 by a top screw. This connection method saves space and is suitable for when the sky and earth lock is placed in a limited installation space. The top screw connection is mainly used for the shaft hole 51, which prevents relative movement by holding the shaft. This connection method ensures the stability and reliability of the connection between the connecting rod 6 and the third connecting part 32, and is also convenient for future disassembly and maintenance.

[0092] The connecting rod 6 is made of aluminum alloy, specifically, 6061-T6 or 7075-T6, etc., which are aviation-grade aluminum alloys. These materials have the characteristics of high strength and low density, further reducing the weight of the connecting rod 6 while ensuring the strength and durability of the connecting rod 6.

[0093] The connection between the connecting rod 6 and the third connecting portion 32 of the rack 3 is secured with a jackscrew. The jackscrew can be of M3 or M4 size and made of stainless steel or high-strength alloy steel. The length of the jackscrew is determined by the thickness of the connection area and is typically between 5 mm and 10 mm. The jackscrew can be located on the end face of the connecting rod 6.

[0094] This design complements the previously mentioned rack 3 and housing 5. Because housing 5 is relatively thin (only 7-9 mm), the connection between connecting rod 6 and rack 3 must be made outside of housing 5. The hollow connecting rod 6 design not only reduces weight but also provides internal space for a jackscrew connection, saving space while ensuring a secure connection.

[0095] The technical solution of this application significantly reduces the weight of the connecting rod 6 by adopting a hollow structure and aluminum material. Compared with the traditional solid steel connecting rod 6, the hollow aluminum connecting rod 6 of this application can reduce weight by more than 50%. This greatly reduces the resistance when operating the lock, improving the user experience. At the same time, the hollow structure and use of aluminum do not affect the strength of the connecting rod 6, ensuring the reliability and durability of the lock.

[0096] The jackscrew connection solves the problem of reliably connecting the connecting rod 6 to the third connecting portion 32 within a limited space. This connection method eliminates the need for additional connectors and directly utilizes the hollow structure of the connecting rod 6, saving space while ensuring a secure connection. Furthermore, the jackscrew connection facilitates future disassembly and maintenance, improving the maintainability of the lock. This design fully considers the various requirements of the lock in actual use, demonstrating its ingenuity and practicality.

[0097] Please refer to Figure 7 and 8 : In some of the above embodiments, during the implementation of this application, there is still a problem that the connecting rod 6 may produce abnormal noise during movement, affecting the user experience and product quality.

[0098] In this regard, the present application further proposes that the outer surface of the connecting rod 6 is covered with one or more soft parts 61, and the soft parts 61 are used to eliminate abnormal noise generated when the connecting rod 6 moves.

[0099] This technical solution addresses the issue of unusual noise generated by the movement of the connecting rod 6 by coating the outer surface of the connecting rod 6 with a soft member 61. Acting as a cushioning material, the soft member 61 absorbs the vibration and impact generated by the movement of the connecting rod 6, thereby reducing or eliminating the unusual noise. The soft member 61 primarily functions by providing vibration reduction, cushioning, gap filling, and sound insulation. It effectively eliminates unusual noise generated by the movement of the connecting rod 6, improving the user experience and product quality of the lock.

[0100] The flexible member 61 in this application can be made of a variety of materials and forms. For example, materials with elasticity and cushioning properties such as rubber, silicone, soft plastic, or foam can be used. The flexible member 61 can be a monolithic sleeve structure or a segmented ring structure. In some embodiments, the flexible member 61 can be a multi-layer structure, with the inner layer made of a harder material to ensure the strength of the connecting rod 6 and the outer layer made of a softer material to enhance the shock absorption effect.

[0101] The number and distribution of the flexible members 61 can also be adjusted based on actual needs. The flexible members 61 can be evenly applied to the entire outer surface of the connecting rod 6, or they can be applied only to key locations prone to collision or vibration. For example, the flexible members 61 can be applied in sections at the connection between the connecting rod 6 and the rack 3, at the connection between the connecting rod 6 and the bolt assembly 4, and in the middle of the connecting rod 6.

[0102] The thickness of the soft part 61 can be determined according to the overall size of the lock and the diameter of the connecting rod 6. Typically, the thickness of the soft part 61 can be between 0.5 mm and 3 mm to ensure sufficient buffering effect without increasing the overall diameter of the connecting rod 6 too much.

[0103] In the technical solution of this application, the connection and fixation of the flexible member 61 to the connecting rod 6 is also an important factor to consider. The flexible member 61 can be fixed to the surface of the connecting rod 6 by bonding, hot pressing, sleeves, or molding. Selecting an appropriate connection method ensures that the flexible member 61 will not fall off or shift during the movement of the connecting rod 6, thereby continuously achieving its vibration and noise reduction effects.

[0104] In addition, the soft part 61 fills the gap between the connecting rod 6 and the surrounding components, reducing the relative movement between the components, thereby reducing friction noise. The sound insulation effect of the soft part 61 can also block the sound generated by the movement of the connecting rod 6.

[0105] Through this design, the present application not only significantly improves the acoustic performance of the sky lock, but also enhances the user experience and quality of the product. It is worth noting that this improvement does not affect the main function of the connecting rod 6, because the design of the soft part 61 takes into account the motion characteristics and space limitations of the connecting rod 6.

[0106] Please refer to Figure 2 and Figures 7 to 10 In some of the above embodiments, during the implementation of the present application, there is still the problem of how to install the ceiling and ceiling lock on the cabinet door to realize the locking function of the cabinet door.

[0107] In this regard, the present application further proposes a cabinet door using a top and bottom lock, which is embedded in the door body 9.

[0108] This technical solution integrates the lock with the cabinet door by embedding it within the door body 9. This design offers several advantages: First, embedded installation allows the lock to blend seamlessly with the cabinet door, enhancing its overall aesthetics. The lock does not protrude from the surface of the door body 9, preventing potential collisions or damage from exposed components. Second, embedded installation enhances the lock's security. Because the lock body is concealed within the door body 9, potential vandals have difficulty accessing the lock's key components, improving its anti-theft performance. Third, this installation method fully utilizes the cabinet door's thickness, providing installation space for the lock, ensuring that components such as the lock cylinder 1, gear shaft 2, and rack 3 are well protected. Finally, embedded installation ensures that the various components of the lock (such as the lock tongue assembly 4) are accurately aligned with the lock hole or lock seat 81 in the door frame or floor, improving the reliability and stability of the lock.

[0109] In this application, the embedded lock can be implemented in a variety of ways within the door. One possible implementation is to reserve a groove inside the cabinet door that matches the appearance of the lock, into which the lock can be completely embedded. Another approach is to design the cabinet door into a hollow structure, such as an aluminum frame cabinet door, and install the lock within the interior space of the cabinet door. A modular design can also be adopted, dividing the lock into several modules, each embedded in different positions of the cabinet door, to achieve more flexible installation.

[0110] The integration of the lock and cabinet door is more than just a simple physical combination; it forms a fully functional whole. For example, the lock's bolt assembly (4) can be precisely aligned with the cabinet door frame or bottom, ensuring accurate and stable locking. This ensures both aesthetics and ease of use.

[0111] In specific implementation, the appropriate model of the lock can be selected according to the thickness and material of the cabinet door. For example, for a metal cabinet door, it may be necessary to add reinforcing ribs or supporting structures inside the door body 9 to bear the weight of the lock and provide sufficient rigidity.

[0112] The technical solution proposed in this application can effectively solve the problem of installing a ceiling lock on a cabinet door, while achieving reliable locking of the cabinet door. By embedding the ceiling lock in the door body 9, core components such as the lock cylinder 1, gear shaft 2, and rack 3 are hidden inside the cabinet door, greatly improving security. The lock tongue assembly 4 can be precisely extended through a pre-designed opening and perfectly docked with the lock hole in the door frame or the ground, ensuring the reliability of the lock. In addition, this design method also makes full use of the internal space of the cabinet door, does not affect the appearance and use of the cabinet door, and also avoids possible collisions or human damage to the exposed parts.

[0113] The embedded design also better protects the mechanical components of the lock, extending its lifespan and reducing maintenance. This innovative integration approach represents a new direction in cabinet door lock design, meeting functional requirements while also balancing aesthetics and security.

[0114] The above description is merely an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, various modifications and variations of the present application are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A sky and earth lock, characterized in that: include: A lock core, a gear shaft, a rack, a lock tongue assembly, and a housing. The lock core includes a driving portion and a first connecting portion, and the first connecting portion is located at the rear end of the lock core. The gear shaft includes a gear portion and a second connecting portion. The lock core and the gear shaft are connected to each other through the first connecting portion and the second connecting portion to achieve stress transmission. The gear shaft and the rack are respectively mounted on the housing, and a shaft hole is provided on the housing, and the gear shaft is mounted in the shaft hole; The rack includes a rack portion, the housing is provided with a mounting groove in a vertical direction to accommodate the rack portion, one end of the mounting groove has an opening, the rack portion is mounted in the mounting groove and meshes with the gear portion of the gear shaft; the rack is detachably connected to the lock bolt assembly; When the driving portion is rotated by an external force and drives the gear portion to rotate, the gear portion drives the rack portion to move up and down in the vertical direction through engagement with the rack portion.

2. The sky and earth lock according to claim 1, characterized in that: The rack further includes a connecting rod, the rack further includes a third connecting portion, the third connecting portion of the rack is externally disposed on the housing, one end of the connecting rod is detachably mounted on the third connecting portion of the rack, and the other end of the connecting rod is detachably mounted with a locking tongue assembly; One end of the mounting groove close to the rack portion is a closed structure, and the closed structure is used to limit the rack that moves up and down under the drive action.

3. The sky and earth lock according to claim 2, characterized in that: There are two racks, and the two racks are symmetrically arranged on both sides of the gear shaft, and the gear portion of the gear shaft is meshed with the rack portions of the two racks at the same time; A section of the rack portion close to the closed end of the mounting groove is not provided with teeth.

4. The sky and earth lock according to claim 3, characterized in that: The end portion of the rack portion close to the closed end of the mounting groove is provided with a boss toward one side of the gear portion.

5. The sky and earth lock according to claim 3, characterized in that: The lock tongue assembly comprises a lock tongue joint and a lock tongue, one end of the lock tongue joint is fastened to the connecting rod, and the other end is fastened to the lock tongue, and the lock tongue, the lock tongue joint and the connecting rod are coaxial.

6. The sky and earth lock according to claim 3, characterized in that: The lock tongue assembly includes a lock tongue joint and a lock tongue. A mounting hole is respectively provided at the left and right ends of the lock tongue joint. The connecting rod is perpendicular to the lock tongue joint and fastened to one of the mounting holes. The lock tongue is perpendicular to the lock tongue joint and fastened to the other mounting hole. The lock tongue and the connecting rod are located on opposite sides of the lock tongue joint.

7. The sky and earth lock according to claim 5 or 6, characterized in that: It also includes a positioning feedback component, which is a spring and a marble. One end of the spring elastically abuts the housing, and the other end abuts the marble, so that the marble elastically abuts the rack portion of the rack. A first groove and a second groove are sequentially provided at a position of the rack portion of the rack near the third connecting portion; When the rack moves up and down, the elastic force generated by the compression deformation of the spring acts on the marble. When the marble abuts against the groove of the rack, the driving part will generate feedback that the rotational resistance increases. Through the cooperation between the marble and the two grooves, the feedback rack has moved to the unlocked position or the locked position. When the rack moves to the unlocked position, the marble of the positioning feedback assembly elastically abuts against the first groove; When the rack moves to the locking position, the marble of the positioning feedback assembly elastically abuts against the second groove.

8. The sky and earth lock according to claim 2, characterized in that: The connecting rod is a hollow structure.

9. The sky and earth lock according to claim 2, characterized in that: The outer surface of the connecting rod is covered with one or more soft parts.

10. A cabinet door using the top and bottom lock according to any one of claims 1 to 9, characterized in that: The sky and earth lock is embedded in the door body.

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