A cabinet door locking mechanism

Abstract

The utility model discloses a cabinet door locking mechanism belongs to cabinet door locking mechanism technical field, including door lock bottom shell, mechanical lock, motor, upper guide rail sliding block, key drive board, motor drive piece, upside bolt drive board, upper door bolt connecting plate and side convex door bolt, the upper guide rail sliding block is fastened on the upper portion of door lock bottom shell, the mechanical lock passes through the bottom shell mechanical lock hole of door lock bottom shell and the mechanical lock hole of reserving cabinet door after through the nut fastening, the key drive board is fastened with upper guide rail sliding block and motor, the motor axle of motor is fastened through the top silk and motor drive piece, the upside bolt drive board is fastened with upper guide rail sliding block, the motor drive axle of motor drive piece is installed in the upside bolt drive board guide slot of upside bolt drive board, can solve the problem that the existing cabinet door locking mechanism structure is complicated, can only install and use in single door, needs distinguishing the key sequence when key door opening, simple structure, high efficiency of unlocking, strong applicability.

Description

Technical Field

[0001] This utility model belongs to the technical field of cabinet door locking mechanisms, and specifically relates to a cabinet door locking mechanism. Background Technology

[0002] The statements in this section are merely background information related to this utility model and do not necessarily constitute prior art.

[0003] Currently, military, armed police, and public security units typically use gun cabinets and ammunition cabinets for routine storage of firearms and ammunition. Existing standards for firearms and ammunition safes require "double locks by two people" on the doors, and all existing cabinets use this design, requiring two keys to open.

[0004] However, existing cabinet door lock designs have two problems. First, the two keys must be opened in a specific order; one lock must be opened first, then the other, to open the door. Reversing this order prevents the door from opening, resulting in a poor user experience. Second, existing cabinet door locks are typically designed for single-door cabinets. However, when cabinet capacity increases and double doors are required, the existing lock solution is often still used, with two mechanical locks on one door. This results in an uncoordinated and disproportionate appearance, making the product look rough and carelessly made, especially in demanding applications. While double-door cabinet door locks exist, their numerous internal components and complex assembly logic significantly increase manufacturing and assembly costs, leading to high product costs. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides a cabinet door locking mechanism that solves the issues of existing cabinet door locking mechanisms having complex structures, being limited to single-door installation, and requiring a specific key sequence for key opening. The mechanism is simple in structure, highly efficient in unlocking, and has strong applicability.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A cabinet door locking mechanism, installed on a cabinet door, is characterized by comprising a door lock base shell, a mechanical lock, a motor, an upper guide rail slider, a key drive plate, a motor drive plate, an upper side bolt drive plate, an upper door bolt connecting plate, and a side-protruding door bolt; the upper guide rail slider is fastened to the upper part of the door lock base shell, and the mechanical lock passes through a pre-reserved mechanical lock hole in the cabinet door and a mechanical lock hole in the bottom shell of the door lock base shell and is then fastened by a nut; the key drive plate is fastened to the upper guide rail slider and the motor; The motor shaft of the motor is fastened to the motor drive plate by a set screw, and the upper bolt drive plate is fastened to the upper guide rail slider. The motor drive shaft of the motor drive plate is installed in the upper bolt drive plate guide groove of the upper bolt drive plate. The upper bolt drive plate is connected to the side protruding bolt through the upper bolt connecting plate. When the mechanical lock or motor rotates forward or backward, it can drive the key drive plate or the motor drive plate to drive the upper bolt drive plate to slide along the upper guide rail slider, thereby driving the side protruding bolt to extend and retract.

[0007] As a further technical solution, it also includes a rotary handle, a handle drive plate, a stop shaft, an upper pull rod connecting shaft, a lower pull rod connecting shaft, an upper door bolt connecting rod, a lower door bolt connecting rod, an upper door bolt, and a lower door bolt; the rotary handle passes through the pre-reserved mounting hole in the cabinet door and the pre-reserved hole in the bottom shell of the door lock and is then secured by a nut and a stop washer; the center hole of the handle drive plate is installed at the end of the rotary handle and secured by a nut; the handle drive plate is provided with a stop shaft, an upper pull rod connecting shaft, and a lower pull rod connecting shaft; the upper pull rod connecting shaft and the lower pull rod connecting shaft are respectively secured to the upper door bolt connecting rod and the lower door bolt connecting rod by snap rings; the ends of the upper door bolt connecting rod and the lower door bolt connecting rod are secured to the upper door bolt and the lower door bolt, respectively.

[0008] As a further technical solution, it also includes a lower door bolt drive plate, a lower door bolt drive plate guide groove, a lower guide rail slider, a lower slider, and a lower door bolt connecting plate; the lower guide rail slider is fastened to the lower part of the door lock bottom shell, and the lower door bolt drive plate and the lower door bolt connecting plate are fastened together by screws to form a lower door bolt drive plate component, the lower door bolt drive plate component is fastened to the lower slider and can move left and right along the lower guide rail slider; the handle drive plate is provided with a lower door bolt drive plate drive shaft, and the lower door bolt drive plate drive shaft is installed in the lower door bolt drive plate guide groove of the lower door bolt drive plate.

[0009] As a further technical solution, it also includes a key drive plate and a key drive guide groove; the key drive plate is linked with the mechanical lock, the key drive plate is provided with a key drive guide groove, and the key drive shaft of the key drive plate is installed in the key drive guide groove.

[0010] As a further technical solution, it also includes a door lock main board, an opening detection board, a locking detection board, and a sensor plate; the sensor plate is disposed on the upper bolt drive board, and the opening detection board and the locking detection board are fixed to the bottom shell of the door lock.

[0011] As a further technical solution, it also includes a first door handle stop plate and a second door handle stop plate; the first door handle stop plate and the second door handle stop plate are fixed to the bottom shell of the door lock.

[0012] As a further technical solution, it also includes a key detection plate, a key sensing plate, and a first detection plate mounting base plate; the key detection plate and the first detection plate mounting base plate are fastened together as an integral component by screws and fixed to the bottom shell of the door lock, and the key sensing plate is disposed on the key drive plate.

[0013] As a further technical solution, it also includes a switch sensing plate, a door open detection plate, a door close detection plate, and a second detection plate mounting base plate; the switch sensing plate is fastened to the lower door bolt connecting plate by screws, and the door open detection plate and the door close detection plate are fixed to the bottom shell of the door lock.

[0014] As a further technical solution, the upper guide rail slider includes a first upper slider and a second upper slider. The key drive plate is fastened to the first upper slider, and the upper bolt drive plate is fastened to the second upper slider. The first upper slider and the second upper slider can slide independently left and right along the upper guide rail slider.

[0015] As a further technical solution, a recessed door bolt is also included. The cabinet door locking mechanism is used for double-door cabinets, with one set of the cabinet door locking mechanism installed on the left door and the right door respectively. The cabinet door locking mechanism of the left door is equipped with a protruding door bolt, and the cabinet door locking mechanism of the right door is equipped with a recessed door bolt.

[0016] Compared with the prior art, the advantages and positive effects of this utility model are: This utility model mechanical lock can drive the key drive plate to rotate, causing the key drive shaft to move along the guide groove of the key drive plate, thereby pulling the key drive plate to slide through the first upper slider of the upper guide rail slider. At the same time, the motor can drive the motor drive plate to rotate, causing the motor drive shaft to move along the guide groove of the upper bolt drive plate, pushing the upper bolt drive plate to slide through the second upper slider of the upper guide rail slider. Both structures can independently drive the side bolt to retract, and there is no sequential dependence. When the side bolt is retracted, the edge of the upper bolt drive plate no longer obstructs the stop shaft of the handle drive plate. At this time, rotating the handle will drive the handle drive plate to rotate synchronously, and through the upper pull rod connecting shaft and the lower pull rod connecting shaft on it, the upper bolt connecting rod and the lower bolt connecting rod will be pulled respectively, thereby driving the upper bolt and the lower bolt to retract. There is no need to distinguish the key opening sequence, which significantly improves the convenience of operation.

[0017] This utility model features a complete cabinet door locking mechanism installed on both the left and right doors. Each mechanism includes a door lock base shell, a mechanical lock, a motor, a rotary handle, and a door bolt assembly. Each mechanism can independently control the movement of the corresponding door bolt through its own drive structure. Furthermore, the left door is equipped with a convex side bolt, and the right door with a concave side bolt. When both doors are locked, the convex and concave side bolts engage, and the upper and lower bolts precisely align with the pre-drilled holes in the upper and lower door frames of the cabinet. This solves the aesthetic inconsistency caused by installing two locks on a single door during double-door installation, and ensures the stability of the double-door linkage locking through structural cooperation, meeting the usage requirements of double-door cabinets.

[0018] This invention disassembles the locking mechanism, with each part fixed by screws and pre-drilled mounting holes. When the mechanical lock is driven, only the key drive plate needs to push the key drive plate, and the side bolt can be moved by the first upper slider sliding along the upper guide rail slider. When the motor is driven, only the motor drive plate needs to push the upper side bolt drive plate, and the side bolt can be moved by the second upper slider sliding along the upper guide rail slider. This simplifies the transmission path, reduces failure points, and lowers manufacturing and assembly costs. Attached Figure Description

[0019] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0020] Figure 1 This is a breakdown diagram of the cabinet door locking mechanism of this utility model. Figure 1 ; Figure 2 This is a breakdown diagram of the cabinet door locking mechanism of this utility model. Figure 2 ; Figure 3 This is a breakdown diagram of the cabinet door locking mechanism of this utility model. Figure 3 ; Figure 4 This is a front view of the cabinet; Figure 5 This is a diagram showing the bolt extended. Figure 6 This is a diagram showing the bolt retracted position; Figure 7 This is a diagram illustrating the locked state; Figure 8 This is a diagram showing the motor in the on state; Figure 9 This is a diagram showing the key in the open position; Figure 10 This is a diagram showing the door open position with the handle rotated. Figure 11 This is an assembly drawing of the cabinet door locking mechanism of this utility model; In the diagram: 1. Door lock bottom case; 1-1. Bottom case mechanical lock hole; 2. Mechanical lock; 3. Door lock main board. 4. Switch sensor plate; 4-1. Switch sensor baffle; 5. Lower door bolt drive plate; 5-1. Lower door bolt drive plate guide groove; 6. Handle drive plate, 6-1 Stop shaft, 6-2 Upper pull rod connecting shaft, 6-3 Lower pull rod connecting shaft, 6-4 Lower door bolt drive plate drive shaft; 7. Key drive board, 7-1. Key drive guide groove, 7-2. Key sensor plate; 8 Upper bolt drive plate, 8-1 Upper bolt drive plate guide groove, 8-2 Sensing sheet, 8-3 Upper bolt drive plate retaining edge; 9 Upper guide rail slider, 9-1 First upper slider, 9-2 Second upper slider; 10-key drive plate, 10-1 key drive shaft; 11 motor, 11-1 motor shaft; 12 lower guide rail slider, 12-1 lower slider; 13 Lower door bolt connecting plate, 14 First upper door bolt connecting plate, 15 Second upper door bolt connecting plate, 16 First detection plate mounting base plate, 17 Second detection plate mounting base plate; 18 Detection Board, 18-1 Key Detection Board, 18-2 Opening Detection Board, 18-3 Locking Detection Board, 18-4 Door Opening Detection Board, 18-5 Door Closing Detection Board; 19 Rotary handle, 19-1 Drive square tenon) 20 Upper door bolt, 21 Upper door bolt connecting rod, 22 Side protruding door bolt, 23 Side concave door bolt, 24 Lower door bolt connecting rod, 25 Lower door bolt, 26 Left door, 27 Right door; 28 Motor drive plate, 28-1 Motor drive shaft, 29 First door handle stop plate, 30 Second door handle stop plate. Detailed Implementation

[0021] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0022] Existing cabinet door lock designs have two main problems. First, the order in which two keys are used is crucial; one lock must be opened first, then the other, to open the door. Reversing this order prevents the door from opening, resulting in a poor user experience. Second, current cabinet door locks are typically designed for single-door cabinets. However, when cabinet capacity increases and double doors are required, the existing lock design is often still used, resulting in two mechanical locks on one door. This creates an uncoordinated and disproportionate appearance, making the product look rough and carelessly made, especially in demanding applications. While double-door cabinet door locks exist, their numerous internal components and complex assembly logic significantly increase manufacturing and assembly costs, leading to high product costs.

[0023] The present invention will now be described in detail with reference to the accompanying drawings. This embodiment discloses a cabinet door locking mechanism, such as... Figure 1 , Figure 2 as well as Figure 3 As shown, the device includes a door lock base shell 1, a mechanical lock 2, a motor 11, an upper guide rail slider 9, a key drive plate 7, a motor drive plate 28, an upper side bolt drive plate 8, an upper door bolt connecting plate, and a side protruding door bolt 22. The upper guide rail slider 9 is fastened to the upper part of the door lock base shell 1. The mechanical lock 2 passes through the pre-reserved mechanical lock hole in the cabinet door and the bottom mechanical lock hole 1-1 of the door lock base shell 1 and is then fastened by a nut. The key drive plate 7 is fastened to the upper guide rail slider 9 and the motor 11. The motor shaft 11-1 of the motor 11 is fastened to the motor drive plate 28 by a set screw, and the upper bolt drive plate 8 is fastened to the upper guide rail slider 9. The motor drive shaft 28-1 of the motor drive plate 28 is installed into the upper bolt drive plate guide groove 8-1 of the upper bolt drive plate 8. The upper bolt drive plate 8 is connected to the side protruding bolt 22 through the upper bolt connecting plate. When the mechanical lock 2 or the motor 11 rotates forward and backward, it can drive the key drive plate 7 or the motor drive plate 28 to drive the upper bolt drive plate 8 to slide along the upper guide rail slider 9, thereby driving the side protruding bolt 22 to extend and retract.

[0024] Specifically, the mechanical lock 2 can drive the key drive plate 10 to rotate, causing the key drive shaft 10-1 to move along the guide groove of the key drive plate 7, thereby pulling the key drive plate 7 to slide through the first upper slider 9-1 of the upper guide rail slider 9. At the same time, the motor 11 can drive the motor drive plate 28 to rotate, causing the motor drive shaft 28-1 to move along the guide groove of the upper bolt drive plate 8, pushing the upper bolt drive plate 8 to slide through the second upper slider 9-2 of the upper guide rail slider 9. Both structures can independently drive the side bolt 22 to retract, and there is no sequential dependence. When the side bolt 22 is retracted, the upper bolt drive plate stop 8-3 no longer blocks the stop shaft 6-1 of the handle drive plate 6. At this time, rotating the rotating handle 19 can drive the handle drive plate 6 to rotate synchronously. Through the upper pull rod connecting shaft 6-2 and the lower pull rod connecting shaft 6-3 on it, the upper bolt connecting rod 21 and the lower bolt connecting rod 24 are pulled respectively, thereby driving the upper bolt 20 and the lower bolt 25 to retract. There is no need to distinguish the key opening sequence, which significantly improves the convenience of operation.

[0025] Each of the left door 26 and right door 27 is equipped with a complete cabinet door locking mechanism. Each mechanism includes a door lock base shell 1, a mechanical lock 2, a motor 11, a rotary handle 19, and a door bolt assembly. Each mechanism can independently control the door bolt movement of the corresponding door through its own drive structure. At the same time, the left door 26 is equipped with a side-protruding door bolt 22, and the right door 27 is equipped with a side-recessed door bolt 23. When both doors are locked, the side-protruding door bolt 22 and the side-recessed door bolt 23 form an embedded fit. The upper door bolt 20 and the lower door bolt 25 are precisely matched with the reserved holes on the upper and lower door frames of the cabinet, which not only solves the problem of appearance inconsistency caused by installing two locks on one door when installing two doors, but also ensures the stability of the linkage locking of the two doors through structural cooperation, meeting the usage requirements of the two-door cabinet.

[0026] The locking mechanism is disassembled into various parts and fixed with screws and pre-drilled mounting holes. When the mechanical lock 2 is driven, only the key drive plate 10 needs to push the key drive plate 7, and the side bolt 22 can be moved by sliding the first upper slider 9-1 along the upper guide rail slider 9. When the motor 11 is driven, only the motor drive plate 28 needs to push the upper side bolt drive plate 8, and the side bolt 22 can be moved by sliding the second upper slider 9-2 along the upper guide rail slider 9. This simplifies the transmission path, reduces failure points, and lowers manufacturing and assembly costs.

[0027] It also includes a rotary handle 19, a handle drive plate 6, a stop shaft 6-1, an upper pull rod connecting shaft 6-2, a lower pull rod connecting shaft 6-3, an upper door bolt connecting rod 21, a lower door bolt connecting rod 24, an upper door bolt 20, and a lower door bolt 25. The rotary handle 19 passes through the pre-drilled mounting holes in the cabinet door and the pre-drilled holes in the door lock bottom shell 1 and is secured by nuts and stop washers. The center hole of the handle drive plate 6 is installed at the end of the rotary handle 19 and secured by nuts. The handle drive plate 6 is provided with a stop shaft 6-1, an upper pull rod connecting shaft 6-2, and a lower pull rod connecting shaft 6-3. The upper pull rod connecting shaft 6-2 and the lower pull rod connecting shaft 6-3 are secured to the upper door bolt connecting rod 21 and the lower door bolt connecting rod 24 respectively by snap rings. The ends of the upper door bolt connecting rod 21 and the lower door bolt connecting rod 24 are secured to the upper door bolt 20 and the lower door bolt 25. Specifically, rotating the rotary handle 19 can drive the handle drive plate 6 to rotate synchronously, which in turn drives the upper door bolt 20 and the lower door bolt 25 to extend and retract via the upper door bolt connecting rod 21 and the lower door bolt connecting rod 24.

[0028] Specifically, the driving tenon 19-1 is located at the end of the rotating handle 19 and is square. The handle drive plate 6 has a square groove in the center, which can be used to insert the square end of the rotating handle 19 into the square groove of the handle drive plate 6 for fastening. When the rotating handle 19 rotates, it can drive the handle drive plate 6 to rotate as well.

[0029] It also includes a lower bolt drive plate 5, a lower bolt drive plate guide groove 5-1, a lower guide rail slider 12, a lower slider 12-1, and a lower bolt connecting plate 13. The lower guide rail slider 12 is fastened to the lower part of the door lock bottom shell 1. The lower bolt drive plate 5 and the lower bolt connecting plate 13 are fastened together by screws to form a lower bolt drive plate component. The lower bolt drive plate component is fastened to the lower slider 12-1 and can move left and right along the lower guide rail slider 12. The handle drive plate 6 is provided with a lower bolt drive plate drive shaft 6-4, which is installed in the lower bolt drive plate guide groove 5-1 of the lower bolt drive plate 5. Specifically, when the handle drive plate 6 rotates, it can drive the lower bolt drive plate 5 to slide along the lower guide rail slider 12 through the lower bolt drive plate drive shaft 6-4, and then drive the side bolt 22 to extend and retract through the lower bolt connecting plate 13.

[0030] It also includes a key drive plate 10 and a key drive guide groove 7-1; the key drive plate 10 is linked to the mechanical lock 2, and the key drive plate 7 is provided with a key drive guide groove 7-1, into which the key drive shaft 10-1 of the key drive plate 10 is inserted. Specifically, when the mechanical lock 2 is rotated, the key drive plate 10 can be driven to rotate, causing the key drive shaft 10-1 to move along the key drive guide groove 7-1, thereby pushing the key drive plate 7 to slide along the upper guide rail slider 9.

[0031] It also includes a door lock main board 3, an opening detection board 18-2, a locking detection board 18-3, and a sensor plate 8-2; the sensor plate 8-2 is set on the upper bolt drive board 8, and the opening detection board 18-2 and the locking detection board 18-3 are fixed to the bottom shell 1 of the door lock.

[0032] Specifically, when the motor 11 drives the upper bolt drive plate 8 to slide and retract the side bolt 22, and the sensing plate 8-2 blocks the open detection plate 18-2 sensor, the door lock main board 3 detects the signal change and controls the motor 11 to stop rotating; when the motor 11 drives the upper bolt drive plate 8 to slide and extend the side bolt 22, and the sensing plate 8-2 blocks the lock detection plate 18-3 sensor, the door lock main board 3 detects the signal change and controls the motor 11 to stop rotating.

[0033] It also includes a first door handle stop plate 29 and a second door handle stop plate 30; the first door handle stop plate 29 and the second door handle stop plate 30 are fixed to the bottom shell 1 of the door lock.

[0034] Specifically, when the rotating handle 19 drives the handle drive plate 6 to rotate clockwise to a set angle, the stop shaft 6-1 is blocked by the first door handle stop plate 29, and the rotating handle 19 cannot continue to rotate; when the rotating handle 19 drives the handle drive plate 6 to rotate counterclockwise to a set angle, the stop shaft 6-1 is blocked by the second door handle stop plate 30, and the rotating handle 19 cannot continue to rotate.

[0035] Specifically, the function of the first door handle stop plate 29 and the second door handle stop plate 30 is to limit the rotation of the rotary handle 19 in both directions to prevent excessive rotation.

[0036] It also includes a key detection board 18-1, a key sensor plate 7-2, and a first detection board mounting base plate 16; the key detection board 18-1 and the first detection board mounting base plate 16 are fastened together as a whole component by screws and fixed to the bottom shell 1 of the door lock, and the key sensor plate 7-2 is disposed on the key drive board 7. Specifically, when the key drive board 7 moves left and right, it can drive the key sensor plate 7-2 to block or not block the key detection board 18-1, and the door lock main board 3 determines the cabinet door key opening status through this signal.

[0037] It also includes a switch sensor plate 4, a door open detection plate 18-4, a door close detection plate 18-5, and a second detection plate mounting base plate 17; the switch sensor plate 4 is fastened to the lower door bolt connecting plate 13 by screws, and the door open detection plate 18-4 and the door close detection plate 18-5 are fixed to the door lock bottom shell 1. Specifically, when the rotating handle 19 rotates and drives the handle drive plate 6 to move, it can indirectly drive the switch sensor plate 4 to move left and right, so that the switch sensor baffle 4-1 blocks or does not block the door open detection plate 18-4 and the door close detection plate 18-5. The door lock main board 3 determines the door open and door closed status through this signal.

[0038] Specifically, the leftmost end of the switch sensor plate 4 is the switch sensor baffle 4-1, which is used to block the door open detection plate 18-4 and the door close detection plate 18-5 respectively when the switch sensor plate 4 moves to the left and to the right, thereby determining whether the lock mechanism is open or closed.

[0039] The upper guide rail slider 9 includes a first upper slider 9-1 and a second upper slider 9-2. The key drive plate 7 is fastened to the first upper slider 9-1, and the upper bolt drive plate 8 is fastened to the second upper slider 9-2. The first upper slider 9-1 and the second upper slider 9-2 can slide independently left and right along the upper guide rail slider 9.

[0040] It also includes a recessed bolt 23. The cabinet door locking mechanism is used for double-door cabinets. A cabinet door locking mechanism is installed on the left door 26 and the right door 27 respectively. The cabinet door locking mechanism of the left door 26 is equipped with a protruding bolt 22, and the cabinet door locking mechanism of the right door 27 is equipped with a recessed bolt 23. Specifically, when the protruding bolt 22 and the recessed bolt 23 are extended, the protruding bolt 22 and the recessed bolt 23 can form an embedded fit to realize the linkage locking of the left door 26 and the right door 27.

[0041] like Figure 4 As shown, the cabinet door locking mechanism is used for double-door cabinets. One set of this structure is installed on the left door 26 and the right door 27 respectively. The left door 26 and the right door 27 are symmetrically equipped with a rotary handle 19 and a mechanical lock 2. The door bolt connected to it is extended and retracted through the cabinet door locking mechanism to realize the locking and unlocking of the cabinet door.

[0042] The upper and lower door frames of the cabinet are designed with holes that match the size of the upper door bolt 20 and the lower door bolt 25. The side door bolt adopts a convex and concave design. When the side door bolt is extended, the convex and concave door bolts can form an embedded fit.

[0043] like Figure 5 As shown, when all bolts are extended, the upper bolt 20 and lower bolt 25 engage with the bolt holes on the cabinet door frame, and the protruding bolts 22 and recessed bolts 23 of the left door 26 and right door 27 engage respectively, thus locking the left door 26 and right door 27, and closing the cabinet doors. Figure 6 As shown, when the convex bolts 22 and concave bolts 23 of the upper bolt 20, lower bolt 25, left door 26, and right door 27 are all retracted, the locking between bolts and bolts, and between bolts and reserved holes in the door frame, is released, and the cabinet door can be opened.

[0044] Considering the different application scenarios, cabinet dimensions and protection level requirements, reflected in the number and diameter of door bolts, different requirements will appear. The number and diameter of upper door bolts 20 and lower door bolts 25, the length of upper door bolt connecting rod 21 and lower door bolt connecting rod 24, and the diameter of side protruding door bolts 22 and side concave door bolts 23 need to be adjusted according to the cabinet dimensions and standard requirements, while the overall locking principle remains unchanged.

[0045] Basic principle: The mechanical lock 2 or motor 11 drives the drive plate in both forward and reverse rotation, causing the side bolt 22 to extend and retract. The rotating handle 19 rotates in both directions, causing the side bolt 22, upper bolt 20, and lower bolt 25 to extend and retract. A first handle stop plate 29 and a second handle stop plate 30 are installed on the bottom shell 1 of the door lock to control the starting point of the rotation of the rotating handle 19. The mechanical lock 2 and motor 11 can control the left and right movement of the upper bolt drive plate 8, so that the upper bolt drive plate stop edge 8-3 blocks and avoids the stop shaft 6-1, thereby achieving the stopping and rotation control of the rotating handle 19.

[0046] When the cabinet door is opened from locked, the mechanical lock 2 or motor 11 must first control the upper bolt drive plate 8 to move to the left, causing the side bolt 22 to retract, thus opening the cabinet door locking mechanism. After the cabinet door locking mechanism is opened, the upper bolt drive plate stop 8-3 no longer obstructs the stop shaft 6-1, and rotating the rotary handle 19 controls the other bolts to retract.

[0047] When the cabinet door is opened and then locked, the rotary handle 19 is first rotated to extend the side bolt 22, upper bolt 20, and lower bolt 25. Then, the mechanical lock 2 or the motor 11 controls the upper bolt drive plate 8 to move to the right, causing the side bolt 22 to extend and locking the cabinet door. After the cabinet door locking mechanism is locked, the upper bolt drive plate stop 8-3 blocks the stop shaft 6-1, stopping the rotary handle 19.

[0048] Activate the implementation plan: such as Figure 7 As shown, when the cabinet door locking mechanism is fully locked, the door lock main board 3 receives the opening command, and then... Figure 8 As shown, the drive motor 11 rotates counterclockwise, simultaneously driving the motor drive plate 28 to rotate. The motor drive shaft 28-1 moves along the guide groove 8-1 of the upper bolt drive plate, generating a leftward pulling force on the upper bolt drive plate 8. The upper bolt drive plate 8 moves to the left along the upper guide rail slider 9 via the second upper slider 9-2, pulling the side bolt 22 to the left via the first upper bolt connecting plate 14 and the second upper bolt connecting plate 15, thus retracting the side bolt 22. When the sensing plate 8-2 blocks the opening detection plate 18-2 sensor, the door lock main board 3 detects a change in the sensor signal and controls the motor 11 to stop rotating. After the upper bolt drive plate 8 has moved to the left, the upper bolt drive plate stop edge 8-3 no longer obstructs the stop shaft 6-1.

[0049] The cabinet door locking mechanism can also be opened via mechanical lock 2, such as... Figure 9As shown, when the cabinet door locking mechanism is fully locked, rotating the mechanical lock 2 simultaneously drives the key drive plate 10 to rotate counterclockwise. The key drive shaft 10-1 moves along the key drive guide groove 7-1, generating a leftward pulling force on the key drive plate 7. Since the upper bolt drive plate 8, the motor drive plate 28, the key drive plate 7, the first upper bolt connecting plate 14, and the second upper bolt connecting plate 15 are connected as a single component to pull the side bolt 22, the leftward pulling force pulls this component to move to the left along the upper guide rail slider 9 via the first upper slider 9-1 and the second upper slider 9-2, thus retracting the side bolt 22. After the upper bolt drive plate 8 has moved to the left, the upper bolt drive plate stop 8-3 no longer obstructs the stop shaft 6-1.

[0050] After the cabinet door locking mechanism is opened, as Figure 10 As shown, rotating the handle 19 causes the handle drive plate 6 to rotate counterclockwise. After rotating a certain angle, the stop shaft 6-1 is blocked by the second door handle stop plate 30, preventing the handle 19 from rotating further. When the handle drive plate 6 rotates, it pulls the upper door bolt 20 and the lower door bolt 25 back through the upper pull rod connecting shaft 6-2 and the lower pull rod connecting shaft 6-3. When the lower door bolt drive plate drive shaft 6-4 moves, it drives the lower door bolt drive plate 5 through the lower door bolt drive plate guide groove 5-1, causing it to move to the left along the lower guide rail slider 12 via the lower slider 12-1, and pulls the side protruding door bolt 22 back through the lower door bolt connecting plate 13.

[0051] After all the bolts are pulled back, the locks on the left door 26 and the right door 27 are released, allowing the cabinet doors to be opened.

[0052] Locking Implementation Plan: When the cabinet door is open, if Figure 10 As shown, rotating the handle 19 causes the handle drive plate 6 to rotate clockwise synchronously. After rotating a certain angle, the stop shaft 6-1 is blocked by the first door handle stop plate 29, preventing the handle 19 from rotating further. When the handle drive plate 6 rotates, it pulls the upper door bolt 20 and the lower door bolt 25 out through the upper pull rod connecting shaft 6-2 and the lower pull rod connecting shaft 6-3. When the lower door bolt drive plate drive shaft 6-4 moves, it drives the lower door bolt drive plate 5 through the lower door bolt drive plate guide groove 5-1, causing it to move to the right along the lower guide rail slider 12 via the lower slider 12-1, and extending the side protruding door bolt 22 through the lower door bolt connecting plate 13.

[0053] like Figure 8As shown, when the cabinet door locking mechanism is opened, after the handle 19 returns to its original position, the door lock main board 3 receives the locking command and drives the motor 11 to rotate clockwise, simultaneously driving the motor drive plate 28 to rotate. The motor drive shaft 28-1 moves along the guide groove 8-1 of the upper bolt drive plate, generating a rightward thrust on the upper bolt drive plate 8. The upper bolt drive plate 8 moves to the right along the upper guide rail slider 9 via the second upper slider 9-2, pushing the side bolt 22 to the right via the first upper bolt connecting plate 14 and the second upper bolt connecting plate 15, thus extending the side bolt 22. When the sensing plate 8-2 blocks the sensor on the locking detection plate 18-3, the door lock main board 3 detects a change in the sensor signal and controls the motor 11 to stop rotating. After the upper bolt drive plate 8 completes its rightward movement, the upper bolt drive plate stop 8-3 blocks the stop shaft 6-1.

[0054] like Figure 9 As shown, when the cabinet door locking mechanism is opened by the key, the mechanical lock 2 is turned, which simultaneously drives the key drive plate 10 to rotate clockwise. The key drive shaft 10-1 moves along the key drive guide groove 7-1, generating a rightward thrust on the key drive plate 7. Since the upper bolt drive plate 8, the motor drive plate 28, the key drive plate 7, the first upper bolt connecting plate 14, and the second upper bolt connecting plate 15 are connected as a single component to pull the side bolt 22, the rightward thrust pushes this component to move to the right along the upper guide rail slider 9 via the first upper slider 9-1 and the second upper slider 9-2, thus extending the side bolt 22. After the upper bolt drive plate 8 has moved to the right, the upper bolt drive plate stop 8-3 blocks the stop shaft 6-1.

[0055] After the upper drive plate stop 8-3 blocks the stop shaft 6-1, the rotating handle 19 stops rotating under the combined limitation of the stop shaft 6-1 and the first door handle stop plate 29, thus locking the cabinet door.

[0056] Basic status detection: When the mechanical lock 2 is turned, the key drive plate 7 moves left and right through the key drive plate 10, so that the key sensor plate 7-2 can block or not block the key detection plate 18-1. The door lock main board 3 can determine the cabinet door key opening status through this signal.

[0057] When the handle 19 is rotated, the handle drive plate 6 drives the switch sensing plate 4 to move left and right, so that the switch sensing baffle 4-1 blocks or does not block the door open detection plate 18-4 and the door close detection plate 18-5. The door lock main board 3 can determine the door open and door close status by reading the signal changes of the door open detection plate 18-4 and the door close detection plate 18-5.

[0058] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. A cabinet door locking mechanism, wherein the cabinet door locking mechanism is installed on the cabinet door, characterized in that, The device includes a door lock base shell, a mechanical lock, a motor, an upper guide rail slider, a key drive plate, a motor drive plate, an upper side bolt drive plate, an upper door bolt connecting plate, and a side-protruding door bolt. The upper guide rail slider is fastened to the upper part of the door lock base shell. The mechanical lock passes through the pre-reserved mechanical lock hole in the cabinet door and the mechanical lock hole in the bottom shell of the door lock base shell and is then fastened with a nut. The key drive plate is fastened to the upper guide rail slider and the motor. The motor shaft of the motor is fastened to the motor drive plate by a set screw, and the upper bolt drive plate is fastened to the upper guide rail slider. The motor drive shaft of the motor drive plate is installed in the upper bolt drive plate guide groove of the upper bolt drive plate. The upper bolt drive plate is connected to the side protruding bolt through the upper bolt connecting plate. When the mechanical lock or motor rotates forward or backward, it can drive the key drive plate or the motor drive plate to drive the upper bolt drive plate to slide along the upper guide rail slider, thereby driving the side protruding bolt to extend and retract.

2. The cabinet door locking mechanism as described in claim 1, characterized in that, It also includes a rotary handle, a handle drive plate, a stop shaft, an upper pull rod connecting shaft, a lower pull rod connecting shaft, an upper door bolt connecting rod, a lower door bolt connecting rod, an upper door bolt, and a lower door bolt. The rotary handle passes through the pre-drilled mounting holes in the cabinet door and the bottom shell of the door lock and is secured by nuts and stop washers. The center hole of the handle drive plate is installed at the end of the rotary handle and secured by nuts. The handle drive plate is provided with a stop shaft, an upper pull rod connecting shaft, and a lower pull rod connecting shaft. The upper pull rod connecting shaft and the lower pull rod connecting shaft are respectively secured to the upper door bolt connecting rod and the lower door bolt connecting rod by snap rings. The ends of the upper door bolt connecting rod and the lower door bolt connecting rod are secured to the upper door bolt and the lower door bolt, respectively.

3. The cabinet door locking mechanism according to claim 2, characterized in that, It also includes a lower door bolt drive plate, a lower door bolt drive plate guide groove, a lower guide rail slider, a lower slider, and a lower door bolt connecting plate; the lower guide rail slider is fastened to the lower part of the door lock bottom shell, and the lower door bolt drive plate and the lower door bolt connecting plate are fastened together by screws to form a lower door bolt drive plate component, the lower door bolt drive plate component is fastened to the lower slider and can move left and right along the lower guide rail slider; the handle drive plate is provided with a lower door bolt drive plate drive shaft, and the lower door bolt drive plate drive shaft is installed in the lower door bolt drive plate guide groove of the lower door bolt drive plate.

4. The cabinet door locking mechanism as described in claim 1, characterized in that, It also includes a key drive plate and a key drive guide groove; the key drive plate is linked with the mechanical lock, the key drive plate is provided with a key drive guide groove, and the key drive shaft of the key drive plate is installed into the key drive guide groove.

5. The cabinet door locking mechanism as described in claim 1, characterized in that, It also includes a door lock main board, an opening detection board, a locking detection board, and a sensor plate; the sensor plate is disposed on the upper bolt drive board, and the opening detection board and the locking detection board are fixed to the bottom shell of the door lock.

6. The cabinet door locking mechanism according to claim 2, characterized in that, It also includes a first door handle stop plate and a second door handle stop plate; the first door handle stop plate and the second door handle stop plate are fixed to the bottom shell of the door lock.

7. The cabinet door locking mechanism as described in claim 1, characterized in that, It also includes a key detection board, a key sensor plate, and a first detection board mounting base plate; the key detection board and the first detection board mounting base plate are fastened together as an integral part by screws and fixed to the bottom shell of the door lock, and the key sensor plate is disposed on the key drive board.

8. The cabinet door locking mechanism according to claim 2, characterized in that, It also includes a switch sensing plate, a door open detection plate, a door close detection plate, and a second detection plate mounting base plate; the switch sensing plate is fastened to the lower door bolt connecting plate by screws, and the door open detection plate and the door close detection plate are fixed to the bottom shell of the door lock.

9. The cabinet door locking mechanism as described in claim 1, characterized in that, The upper guide rail slider includes a first upper slider and a second upper slider. The key drive plate is fastened to the first upper slider, and the upper bolt drive plate is fastened to the second upper slider. The first upper slider and the second upper slider can slide independently left and right along the upper guide rail slider.

10. The cabinet door locking mechanism as described in claim 1, characterized in that, It also includes a recessed door bolt. The cabinet door locking mechanism is used for double-door cabinets. A set of the cabinet door locking mechanism is installed on the left door and the right door respectively. The cabinet door locking mechanism of the left door is equipped with a protruding door bolt, and the cabinet door locking mechanism of the right door is equipped with a recessed door bolt.

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