Nfc cabinet lock

Abstract

The utility model relates to a kind of NFC cabinet locks, including mutually fixed front cover and back cover, transversely and rotatably inserted and connected in the lock shaft of front cover and back cover, the lock piece fixed in the rear end of lock shaft, and the handle rotatably connected in the front end of lock shaft;It further includes the control assembly and lock core being cooperated between front cover and back cover, and control assembly includes circuit board fixed on the inner wall of front cover and battery and NFC sensor fixed on circuit board and all with circuit board electric connection;Lock core includes oval shell fixed on the inner wall of front cover, oval cover body detachably fixed at the opening of oval shell, circular ring movably arranged in oval shell to have up and down elastic vertical displacement function, micro motor fixed on the front side outer wall of oval shell and electrically connected with battery by circuit board, and the dial block arranged in the interior of circular ring;The utility model simplifies the structure of cabinet lock and reduces manufacturing cost.

Description

Technical Field

[0001] This utility model relates to an NFC cabinet lock. Background Technology

[0002] Rack locks are specialized locks used for enclosed equipment such as server racks, power distribution boxes, and lockers. They securely close the cabinet doors using mechanical or electronic means to prevent unauthorized opening. Rack locks mainly consist of a lock plate, a lock shaft, and a handle. The lock shaft is rotatably inserted into the cabinet door, while the lock plate and handle are located at opposite ends of the lock shaft.

[0003] NFC stands for Near Field Communication, a type of wireless communication technology that enables wireless communication within a short distance (usually a few centimeters) and offers fast communication speeds and high security.

[0004] The rack lock using NFC technology is equipped with an NFC chip. Users can use their mobile phones or other NFC-enabled devices to establish a signal connection with the NFC chip by bringing them close to the rack lock, thereby completing identity authentication and locking / unlocking operations.

[0005] Most existing NFC cabinet locks have the locking mechanism located on the lock plate. Since the lock plate is a component that interacts with the lock hole on the cabinet door frame and can rotate, the cabinet lock is in the locked state when the lock plate is locked and cannot rotate. Conversely, if the lock plate resumes rotation, the cabinet lock is in the unlocked state. However, to achieve the above functions, more components need to be added to the lock plate or lock shaft, making the structure quite complex and increasing the manufacturing cost accordingly. Moreover, the processing and assembly process is cumbersome, time-consuming, and labor-intensive, and further improvements are needed. Utility Model Content

[0006] In view of the current state of the prior art, the technical problem to be solved by this utility model is to provide an NFC cabinet lock that simplifies the structure and reduces manufacturing costs, and simplifies the processing and assembly process to achieve time and labor saving.

[0007] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: an NFC cabinet lock, comprising a front cover and a rear cover fixed to each other, a locking shaft that is laterally and rotatably connected to the front cover and the rear cover, a locking plate fixed to the rear end of the locking shaft, and a handle rotatably connected to the front end of the locking shaft, characterized in that: It also includes a control assembly and a lock cylinder located between the front cover and the rear cover and cooperating with each other. The control assembly includes a circuit board fixed on the inner wall of the front cover, a battery fixed on the circuit board and electrically connected to the circuit board, and an NFC sensor. The lock cylinder includes an elliptical shell fixed to the inner wall of the front cover, a detachable elliptical cover fixed to the opening of the elliptical shell, a ring movably disposed in the elliptical shell to have the function of elastic vertical movement, a micro motor fixed to the outer wall of the front side of the elliptical shell and electrically connected to the battery through a circuit board, and a lever disposed inside the ring. The rotation shaft of the micro motor passes through the elliptical shell laterally and is fixed to the lever. The end of the lever cooperates with the inner circumferential surface of the ring. The ring always has a tendency to move downwards to reset.

[0008] Preferably, an extension block is formed downward on the lower outer wall of the ring, the end of the extension block moves through the elliptical shell and extends below the elliptical shell, and a locking block is formed downward on the front side of the end of the extension block.

[0009] Preferably, a first recess is formed on the inner wall of the front cover rearward, located below the extension block. Correspondingly, a second recess is formed on the inner wall of the handle rearward, which cooperates with the first recess, and the second recess is movably disposed in the first recess.

[0010] Preferably, a first locking hole is provided on the upper outer wall of the first cavity, located below the locking block, and correspondingly, a second locking hole is provided on the upper outer wall of the second cavity. Both the first locking hole and the second locking hole cooperate with the end of the locking block.

[0011] Preferably, a protrusion is formed outward on one side of the root of the lever, and correspondingly, a stop block located inside the annulus and cooperating with the protrusion is formed outward on the bottom inner wall of the elliptical shell.

[0012] Preferably, a U-shaped guide groove is formed downward on the lower inner wall of the elliptical shell and communicates with its interior. The extension block is movably embedded in the U-shaped guide groove, and the opening side of the U-shaped guide groove faces rearward.

[0013] Preferably, a limiting opening groove is formed between the front outer wall of the U-shaped guide groove and the bottom inner wall of the U-shaped guide groove, and the locking block is movably embedded in the limiting opening groove.

[0014] Preferably, the interior of the second cavity is further fitted with a pin tumbler lock, wherein the lock cylinder of the pin tumbler lock cooperates with the end of the lock block.

[0015] Preferably, the extension block has vertically distributed slots, and correspondingly, a seat block that extends into the slot is formed on the bottom inner wall of the U-shaped guide groove. The slot is also provided with vertically distributed return springs, the upper end of which is pressed against the lower outer wall of the seat block, and the lower end of which is pressed against the lower inner wall of the slot.

[0016] Compared with the prior art, the advantages of this utility model are as follows: This utility model sets the lock cylinder at the end of the handle, rather than on the lock plate or lock shaft. As long as the end of the handle is fixed to prevent it from being pulled out, the lock plate can be prevented from rotating to achieve the locking state. Conversely, if the end of the handle is released, the end of the handle can be pulled out and rotated, thereby driving the lock plate to rotate to complete the unlocking. Compared with the prior art, this utility model only requires a smaller number of parts to achieve locking and unlocking of the end of the handle, thereby simplifying the structure of the cabinet lock and reducing manufacturing costs, as well as simplifying the processing and assembly process to achieve the effect of saving time and effort. Attached Figure Description

[0017] Figure 1 This is an exploded view of the left front side of this utility model; Figure 2 This is an exploded view of the left front side of the lock cylinder of this utility model; Figure 3 This is an exploded view of the left rear side of the lock cylinder of this utility model; Figure 4 This is an exploded structural diagram of the left rear side of the front cover and handle of this utility model. Detailed Implementation

[0018] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0019] To keep the following description of the embodiments of this utility model clear and concise, detailed descriptions of known functions and known components are omitted.

[0020] like Figures 1-4 As shown, an NFC cabinet lock includes a front cover 1 and a rear cover 2 fixed to each other, a locking shaft 3 that is horizontally and rotatably connected to the front cover 1 and the rear cover 2, a locking plate 4 fixed to the rear end of the locking shaft 3, and a handle 5 rotatably connected to the front end of the locking shaft 3. After the cabinet lock is installed on the cabinet door, the end of the handle 5 is bent forward at a certain angle so that the handle 5 can be gripped by hand. Then, the handle 5 is turned clockwise or counterclockwise, which will drive the lock plate 4 to rotate through the lock shaft 3, thereby causing the end of the lock plate 4 to leave the lock hole located on the cabinet body, thus opening the cabinet door. The above structure and principle are all existing technologies. The feature of this utility model is that it also includes a control component 6 and a lock cylinder 7 located between the front cover 1 and the rear cover 2 and cooperating with each other. The control component 6 includes a circuit board 61 fixed on the inner wall of the front cover 1, a battery 62 fixed on the circuit board 61 and electrically connected to the circuit board 61, and an NFC sensor 63. The lock cylinder 7 includes an elliptical housing 71 fixed to the inner wall of the front cover 1, an elliptical cover 72 detachably fixed to the opening of the elliptical housing 71, a ring 74 movably disposed in the elliptical housing 71 to have the function of elastic vertical movement, a micro motor 73 fixed to the front outer wall of the elliptical housing 71 and electrically connected to the battery 62 through the circuit board 61, and a lever 75 disposed inside the ring 74. The rotation shaft of the micro motor 73 passes through the elliptical housing 71 laterally and rearward and is fixed on the lever 75. The end of the lever 75 cooperates with the inner circumferential surface of the ring 74, and the ring 74 always has the tendency to move downward to reset. An extension block 741 is formed downward on the lower outer wall of the ring 74. The end of the extension block 741 moves through the elliptical shell 71 and extends to the bottom of the elliptical shell 71. A locking block 742 is formed downward on the front side of the end of the extension block 741. A first recess 101 is formed on the inner wall of the front cover 1, located below the extension block 741. Correspondingly, a second recess 51 is formed on the inner wall of the handle 5, which cooperates with the first recess 101. The second recess 51 is movably disposed in the first recess 101. A first locking hole 102 is provided on the upper outer wall of the first cavity 101, located below the locking block 742. Correspondingly, a second locking hole 52 is provided on the upper outer wall of the second cavity 51. Both the first locking hole 102 and the second locking hole 52 are engaged with the end of the locking block 742.

[0021] A protrusion 751 is formed outward on one side of the root of the paddle 75. Correspondingly, a stop 711 is formed outward on the bottom inner wall of the elliptical shell 71, which is located inside the ring 74 and cooperates with the protrusion 751.

[0022] The lower inner wall of the elliptical shell 71 has a U-shaped guide groove 712 that communicates with its interior. The extension block 741 is movably embedded in the U-shaped guide groove 712, and the opening side of the U-shaped guide groove 712 is set to the rear.

[0023] A limiting opening groove 713 is provided between the front outer wall of the U-shaped guide groove 712 and the bottom inner wall of the U-shaped guide groove 712, and the locking block 742 is movably embedded in the limiting opening groove 713.

[0024] The second cavity 51 is also fitted with a pin tumbler lock 12, the lock cylinder of the pin tumbler lock 12 and the end of the lock block 742 cooperate with each other.

[0025] The opening of the second cavity 51 is also provided with a swingable cover 8.

[0026] A recessed cavity 53 is also provided on the outer wall of the handle 5, and a cavity hole 54 that cooperates with the NFC sensor 63 is provided on the bottom surface of the recessed cavity 53.

[0027] The cavity 53 is also equipped with a sensor plate 9, which is electrically connected to the sensing end of the NFC sensor 63. The cavity 53 is also equipped with a panel 10.

[0028] A protective shell 11 is also fixed on the inner wall of the front cover 1, which covers the control component 6 and the lock cylinder 7.

[0029] The lower edge of the elliptical cover 72 has a cover plate 721 that covers the opening side of the U-shaped guide groove 712.

[0030] The extension block 741 has vertically distributed slots 743. Correspondingly, the bottom inner wall of the U-shaped guide groove 712 has a seat block 714 that extends outward into the slot 743. The slot 743 is also provided with vertically distributed reset springs 13. The upper end of the reset spring 13 is pressed against the lower outer wall of the seat block 714, and the lower end of the reset spring 13 is pressed against the lower inner wall of the slot 743.

[0031] Working principle: When in the locked state, the second recess 51 extends into the first recess 101, and the end of the locking block 742 passes downward through the first lock hole 102 and is inserted into the second lock hole 52. In this way, the end of the handle 5 is locked and cannot be pulled outward, thus preventing it from being turned to unlock.

[0032] When unlocking, a mobile phone or other portable mobile device with the accompanying APP installed is brought close to the panel 10. The NFC sensor 63 will receive the sensing signal from the mobile phone or other portable mobile device through the sensing plate 9 and automatically match it. If the match is successful, the NFC sensor 63 will send an unlock signal to the circuit board 61. When the circuit board 61 receives the unlock signal, it will automatically generate an unlock command and send a power-on command to the battery 62. After receiving the power-on command, the battery 62 will connect the power supply to the micro motor 73 to make its rotating shaft rotate. The above structure and principle are all existing technologies.

[0033] When the rotating shaft of the micro motor 73 rotates, it will drive the end of the lever 75 to swing upward, thereby forcing the ring 74 to move upward through the inner circumferential surface of the ring 74 until the upper outer wall of the ring 74 is attached to the upper inner wall of the elliptical housing 71. During this process, the ring 74 drives the locking block 742 to move upward with the help of the extension block 741, thereby causing the end of the locking block 742 to leave the second lock hole 52. In this way, the end of the handle 5 can be freely pried outward, and the locking plate 4 can be rotated with the help of the locking shaft 3 to complete the unlocking.

[0034] When it is necessary to lock again, first turn the end of the handle 5 back to its original position and press the second cavity 51 into the inside of the first cavity 101. Then, use a mobile phone or other portable mobile device to approach the panel 10 to drive the rotation shaft of the micro motor 73 to reverse in the same way. The end of the toggle block 75 will swing downward. At the same time, the rebound force of the return spring 13 will force the extension block 741 to move downward until the protrusion 751 is blocked by the stop block 711. At this time, the end of the locking block 742 is inserted into the second lock hole 52 again, thus locking the end of the handle 5.

[0035] If the battery 62 runs out of power, or if the NFC sensor 63, circuit board 61, or micro motor 73 malfunctions and cannot drive the micro motor 73 properly, then the mechanical key that is matched with the pin tumbler lock 12 can be used and inserted into the lock hole of the pin tumbler lock 12. When the mechanical key is rotated, the lock cylinder of the pin tumbler lock 12 will rotate synchronously, thereby pushing the end of the lock block 742 upward so that it can be manually removed from the second lock hole 52. In this way, the cabinet door can be opened in emergency mode.

[0036] This invention places the lock cylinder 7 at the end of the handle 5, rather than on the lock plate 4 or lock shaft 3. By fixing the end of the handle 5 to prevent it from being pulled out, the lock plate 4 can be prevented from rotating to achieve the locked state. Conversely, if the end of the handle 5 is released, the end of the handle 5 can be pulled out and rotated, thereby driving the lock plate 4 to rotate to complete the unlocking. Compared with the prior art, this invention requires only a fewer number of parts to achieve locking and unlocking of the end of the handle 5, thereby simplifying the structure of the cabinet lock and reducing manufacturing costs, as well as simplifying the processing and assembly process to achieve the effect of saving time and effort.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An NFC cabinet lock, comprising a front cover and a rear cover fixed to each other, a locking shaft laterally and rotatably connected to the front cover and the rear cover, a locking plate fixed to the rear end of the locking shaft, and a handle rotatably connected to the front end of the locking shaft, characterized in that: It also includes a control assembly and a lock cylinder located between the front cover and the rear cover and cooperating with each other. The control assembly includes a circuit board fixed on the inner wall of the front cover, a battery fixed on the circuit board and electrically connected to the circuit board, and an NFC sensor. The lock cylinder includes an elliptical shell fixed to the inner wall of the front cover, a detachable elliptical cover fixed to the opening of the elliptical shell, a ring movably disposed in the elliptical shell to have the function of elastic vertical movement, a micro motor fixed to the outer wall of the front side of the elliptical shell and electrically connected to the battery through a circuit board, and a lever disposed inside the ring. The rotation shaft of the micro motor passes through the elliptical shell laterally and is fixed to the lever. The end of the lever cooperates with the inner circumferential surface of the ring. The ring always has a tendency to move downwards to reset.

2. The NFC cabinet lock according to claim 1, characterized in that, An extension block is formed downward on the lower outer wall of the ring. The end of the extension block moves through the elliptical shell and extends below the elliptical shell. A locking block is formed downward on the front side of the end of the extension block.

3. An NFC cabinet lock according to claim 2, characterized in that, The inner wall of the front cover has a first recessed cavity formed rearward below the extension block. Correspondingly, the inner wall of the handle has a second recessed cavity formed rearward that cooperates with the first recessed cavity. The second recessed cavity is movably disposed in the first recessed cavity.

4. An NFC cabinet lock according to claim 3, characterized in that, A first locking hole is provided on the upper outer wall of the first cavity, located below the locking block. Correspondingly, a second locking hole is provided on the upper outer wall of the second cavity. Both the first locking hole and the second locking hole cooperate with the end of the locking block.

5. An NFC cabinet lock according to claim 1, characterized in that, A protrusion is formed outward on one side of the root of the lever, and correspondingly, a stop block is formed outward on the bottom inner wall of the elliptical shell, located inside the ring and cooperating with the protrusion.

6. An NFC cabinet lock according to claim 2, characterized in that, The lower inner wall of the elliptical shell has a U-shaped guide groove that communicates with its interior. The extension block is movably embedded in the U-shaped guide groove, and the opening side of the U-shaped guide groove faces rearward.

7. An NFC cabinet lock according to claim 6, characterized in that, A limiting opening groove is formed between the front outer wall of the U-shaped guide groove and the bottom inner wall of the U-shaped guide groove, and the locking block is movably embedded in the limiting opening groove.

8. An NFC cabinet lock according to claim 3, characterized in that, The second cavity is also fitted with a pin tumbler lock, the lock cylinder of which cooperates with the end of the lock block.

9. An NFC cabinet lock according to claim 6, characterized in that, The extension block has vertically distributed slots. Correspondingly, a seat block that extends into the slot is formed on the bottom inner wall of the U-shaped guide groove. The slot is also provided with vertically distributed return springs. The upper end of the return spring is pressed against the lower outer wall of the seat block, and the lower end of the return spring is pressed against the lower inner wall of the slot.

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