NFC trunk lock

Abstract

The application discloses an NFC trunk lock, which comprises an upper base, a lower base, a movable buckle, a clamping hook and an unlocking device, one end of the movable buckle is hinged to the upper base, the clamping hook is movably arranged at the other end of the movable buckle, the lower base is provided with a clamping hole matched with the clamping hook, the unlocking device is arranged in the movable buckle, and the unlocking device comprises an NFC control module and a micro motor which are electrically connected, the micro motor drives a lever to drive the clamping hook to be disengaged, the clamping hook comprises a hook claw and an unlocking lever block with an inclined guide surface, the unlocking lever block is floatingly arranged through a reset spring, the movable buckle is provided with a fixed block with a spring mounting hole and a guide sliding groove, the upper base and the lower base are provided with accommodating grooves, the elastic plate protrusions of the upper base are matched with the protruding blocks of the movable buckle to lock the opening degree, and the limiting blocks of the lower base are matched with the limiting grooves of the movable buckle to limit the separation of the base, the trunk lock has the advantages of compact structure, high integration, convenient unlocking, opening degree positioning, anti-falling reinforcement and reliable locking.

Description

Technical Field

[0001] This utility model relates to the field of tailgate lock technology, specifically an NFC tailgate lock. Background Technology

[0002] With the increasing popularity of electric vehicles and motorcycles, tail boxes are widely used as storage accessories, and tail box locks are a core component for ensuring the security of stored items in the tail box. Traditional tail box locks mostly use mechanical keys for unlocking, which is cumbersome to operate and the keys are easy to lose. In recent years, NFC contactless unlocking technology has been gradually applied to the field of tail box locks, greatly improving the convenience of use.

[0003] In the prior art, Chinese utility model patent with publication number CN217872317U discloses a multi-functional electric vehicle tailgate lock, which has a rotatable lock hook and lock tongue inside the lock shell, and is equipped with a mechanical unlocking component, an electric unlocking component and an NFC unlocking module. Through a multi-stage transmission component consisting of a drive motor, a worm gear, a worm wheel and a swing gear, the push-pull rod is driven to pull the lock tongue to release the lock hook from the limit, which can realize multiple unlocking methods such as mechanical, electric control and NFC.

[0004] However, this solution has the following shortcomings: First, the transmission system adopts a worm gear and multi-stage gear transmission structure, which has a large number of parts, complex assembly process, and high production and maintenance costs; Second, the lock body is an independent integrated lock shell structure, which needs to be additionally embedded and installed in the tail box, resulting in low structural integration and limited adaptability to various scenarios. Therefore, it is necessary to make improvements. Utility Model Content

[0005] This utility model aims to solve one of the technical problems existing in the prior art.

[0006] This application provides an NFC tailgate lock, including an upper base, a lower base, a movable buckle, a hook, and an unlocking device for driving the hook to unlock. One end of the movable buckle is hinged to the upper base, and the hook is movably installed on the other end of the movable buckle. The lower base has a slot for engaging with the hook. The unlocking device is built into the interior of the movable buckle. The unlocking device includes an NFC control module, a micro motor, and a lever. The NFC control module is electrically connected to the micro motor, and the micro motor is used to drive the lever to move the hook to release the engagement between the hook and the slot.

[0007] Furthermore, the latch includes a hook claw and an unlocking block that are fixedly connected to each other, and the unlocking block has an inclined guide surface on the side facing the lever.

[0008] Furthermore, the unlocking lever is floatingly mounted inside the movable buckle via a reset spring, and the end of the hook protrudes from the outside of the movable buckle to engage with the bayonet.

[0009] Furthermore, a fixing block is fixed inside the movable buckle, and a spring mounting hole is opened on the fixing block. One end of the return spring is accommodated in the spring mounting hole, and the other end abuts against the top surface of the hook claw.

[0010] Furthermore, a guide groove is provided on the fixed block, and the top of the unlocking block is slidably fitted into the guide groove, which can move back and forth along the extension direction of the guide groove.

[0011] Furthermore, both the upper and lower bases have receiving grooves on their opposite sides, and the movable buckle is fully fitted into the receiving groove when it is in the locked state.

[0012] Furthermore, the upper base is provided with an installation groove, and an elastic plate is fixed in the installation groove. The free end of the elastic plate is provided with a protruding strip.

[0013] Furthermore, the hinge end of the movable buckle is provided with a corresponding protrusion. When the movable buckle is flipped outward to a set angle, the protrusion abuts against the convex strip to lock the opening degree of the movable buckle.

[0014] Furthermore, limit blocks are fixedly installed on both sides of the inner wall of the receiving groove of the lower base, and limit grooves are correspondingly opened on both sides of the outer wall of the movable buckle.

[0015] Furthermore, in the locked state, the limiting block is fitted into the corresponding limiting groove to restrict the separation of the upper base and the lower base along the locking direction.

[0016] The beneficial effects of this utility model are as follows: 1. Through the integrated structure of the unlocking device built into the movable buckle, the NFC control module is electrically connected to the micro motor, and the output of the micro motor drives the lever to move the hook. This produces the beneficial effect of no external unlocking mechanism, compact overall structure and high integration. At the same time, it realizes NFC contactless induction unlocking, which is convenient to operate and suitable for various tail box installation scenarios.

[0017] 2. The structure features an inclined guide surface for the unlocking lever and a floating hook mounted via a return spring. The lever abuts against the inclined guide surface to convert rotational power into linear thrust, while the return spring provides rebound force. This combination results in a short transmission path and fast unlocking response. Furthermore, the hook automatically rebounds and engages in the locking slot during locking, achieving automatic pressing-type locking and improving locking efficiency.

[0018] 3. The structure of spring mounting holes and guide grooves in the fixed block, with the spring mounting holes radially constraining the return spring and the guide grooves limiting the sliding trajectory of the unlocking block, produces the beneficial effect of preventing the return spring from being deflected by pressure and ensuring that the reciprocating motion of the hook is free from swaying. This ensures the alignment accuracy of the hook and the bayonet, and improves the stability and service life of the lock body.

[0019] 4. With the structure of receiving grooves on both the upper and lower bases, the movable buckle is fully fitted into the receiving groove in the locked state, which produces the beneficial effect of a flat and unprotruding outer surface of the lock body and a strong overall appearance. At the same time, it reduces the operating gap that external tools can reach in, and improves the anti-pry protection performance of the lock body.

[0020] 5. By installing a grooved and fixed elastic plate with a raised strip, and setting a protrusion at the hinge end of the movable buckle, when the movable buckle is opened to a set angle, the protrusion passes over the raised strip and forms a blocking action, which produces the beneficial effect of locking the opening degree of the movable buckle and preventing the movable buckle from falling back automatically, making it convenient for users to continuously take out and put in items in the tail box and improving the convenience of use.

[0021] 6. The structure of setting limit blocks on both sides of the lower base receiving groove and opening limit grooves on the outer walls of both sides of the movable buckle, in the locked state, the limit blocks are embedded in the corresponding limit grooves to jointly bear the separation load, which produces the beneficial effect of avoiding deformation failure of the hook under the force alone, and effectively enhances the connection strength and resistance to external damage after the upper and lower bases are locked. Attached Figure Description

[0022] Figure 1 This is a first-view perspective perspective view of the NFC tailgate lock in the embodiments of this application; Figure 2 This is a perspective view of the upper and lower bases in the embodiments of this application; Figure 3 This is a second-view perspective perspective view of the NFC tailgate lock in the embodiments of this application; Figure 4 This is a three-dimensional view of the active buckle in the embodiments of this application; Figure 5 This is a perspective view of the internal structure of the active buckle in the embodiments of this application; Figure 6 This is a perspective view of the unlocking device in the embodiments of this application; Figure 7 This is a perspective view of the hook, micro motor, lever, and fixing block in the embodiments of this application.

[0023] Figure Labels 1-Upper base, 2-Lower base, 3-Modible buckle, 4-Hook, 41-Claw, 42-Unlocking block, 43-Inclined guide surface, 44-Reset spring, 5-Barrel slot, 6-NFC control module, 7-Micro motor, 8-Lever, 9-Fixing block, 10-Spring mounting hole, 11-Guide slide, 12-Accommodation groove, 13-Mounting groove, 14-Elastic plate, 15-Protrusion strip, 16-Protrusion, 17-Limiting block, 18-Limiting groove. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0025] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0026] The NFC tailgate lock provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0027] Example 1: This application provides an NFC tailgate lock, including an upper base 1, a lower base 2, a movable buckle 3, a hook 4, and an unlocking device for driving the hook 4 to unlock. One end of the movable buckle 3 is hinged to the upper base 1, and the hook 4 is movably installed on the other end of the movable buckle 3. The lower base 2 has a slot 5 for engaging with the hook 4. The unlocking device is built into the interior of the movable buckle 3. The unlocking device includes an NFC control module 6, a micro motor 7, and a lever 8. The NFC control module 6 is electrically connected to the micro motor 7. The micro motor 7 is used to drive the lever 8 to move the hook 4 to release the engagement state between the hook 4 and the slot 5.

[0028] In this embodiment of the application, the hook 4 includes a hook claw 41 and an unlocking block 42 that are fixedly connected to each other. The unlocking block 42 is provided with an inclined guide surface 43 on the side facing the lever 8.

[0029] In this embodiment of the application, the unlocking lever 42 is floatingly mounted inside the movable buckle 3 by means of the reset spring 44, and the end of the hook 41 extends out of the outer side of the movable buckle 3 for engaging with the bayonet 5.

[0030] In this embodiment of the application, a fixing block 9 is fixed inside the movable buckle 3. A spring mounting hole 10 is provided on the fixing block 9. One end of the reset spring 44 is accommodated in the spring mounting hole 10, and the other end abuts against the top surface of the hook 41.

[0031] In this embodiment of the application, a guide groove 11 is provided on the fixing block 9, and the top end of the unlocking block 42 is slidably fitted into the guide groove 11 and can move back and forth along the extension direction of the guide groove 11.

[0032] like Figures 1 to 7 As shown, due to the aforementioned structure, during the locking operation, force is applied to drive the movable buckle 3 to rotate downwards around its hinge end with the upper base 1. When the lower inclined surface of the hook 41 contacts the upper edge of the latch 5 of the lower base 2, the edge of the latch 5 generates an upward component force on the hook 41, driving the hook 41 to simultaneously slide upwards along the guide groove 11 on the fixed block 9. During the sliding process, the return spring 44 is compressed between the spring mounting hole 10 and the top surface of the hook 41 and stores energy. The spring mounting hole 10 constrains the radial position of the return spring 44, preventing the spring from shifting under pressure. When the movable buckle 3 rotates to the locked position, the hook 41 and the latch 5 are aligned. The return spring 44 releases its elastic potential energy, pushing the unlocking block 42 downwards along the guide groove 11, thereby driving the hook 41 downwards into the latch 5, completing the automatic locking. The guide groove 11 constrains the sliding trajectory of the unlocking block 42 throughout the entire process, ensuring that the reciprocating motion of the hook 4 is free from deflection and ensuring the alignment accuracy between the hook 41 and the bayonet 5.

[0033] During the unlocking process, after the NFC control module 6 senses a valid external NFC signal, it outputs a start command to the micro motor 7. The output shaft of the micro motor 7 drives the lever 8 to rotate synchronously. As the lever 8 rotates, its free end gradually comes into contact with the inclined guide surface 43 of the unlocking block 42. Through the force conversion of the inclined guide surface 43, the rotational motion of the lever 8 is converted into an upward pushing force on the unlocking block 42, pushing the unlocking block 42 to slide upward along the guide groove 11. Simultaneously, the hook 41 is driven upward to disengage from the bayonet 5, releasing the locking state. After unlocking is completed, the micro motor 7 drives the lever 8 to return to its initial position. The unlocking block 42 and the hook 41 remain in the locked standby position under the action of the return spring 44, preparing for the next locking action.

[0034] Example 2: In this embodiment, in addition to the structural features of the aforementioned embodiments, the upper base 1 and the lower base 2 are provided with receiving grooves 12 on opposite sides, and the movable buckle 3 is fully fitted into the receiving groove 12 when it is in the locking state.

[0035] In this embodiment of the application, the upper base 1 is provided with a mounting groove 13, and an elastic plate 14 is fixed in the mounting groove 13. The free end of the elastic plate 14 is provided with a protruding strip 15.

[0036] In this embodiment of the application, a protrusion 16 is provided at the hinge end of the movable buckle 3. When the movable buckle 3 is flipped outward to a set angle, the protrusion 16 abuts against the protrusion 15 to lock the opening degree of the movable buckle 3.

[0037] In this embodiment of the application, limit blocks 17 are fixedly provided on both sides of the inner wall of the receiving groove 12 of the lower base 2, and limit grooves 18 are correspondingly provided on both sides of the outer wall of the movable buckle 3.

[0038] In this embodiment of the application, in the locked state, the limiting block 17 is fitted into the corresponding limiting groove 18 to restrict the separation of the upper base 1 and the lower base 2 along the locking direction.

[0039] like Figures 1 to 7 As shown, due to the above structure, when the lock body is in the latched state, the movable buckle 3 is fully embedded in the closed space formed by the corresponding receiving grooves 12 of the upper base 1 and the lower base 2. There are no obvious protrusions on the outer surface of the lock body, and the overall appearance is flat. At the same time, the operating gap of the hook 4 that can be accessed by external tools is reduced, and the anti-pry protection performance of the lock body is improved.

[0040] During the upward opening process after the movable buckle 3 is unlocked, the protrusion 16 at the hinge end rotates synchronously around the hinge axis with the movable buckle 3. When the arc-shaped side of the protrusion 16 contacts the protrusion 15 at the free end of the elastic plate 14, the protrusion 16 applies a lateral pressing force to the protrusion 15, causing the elastic plate 14 to undergo elastic bending deformation along the opening direction of the mounting groove 13. When the movable buckle 3 rotates to the preset maximum opening angle, the protrusion 16 passes the highest point of the protrusion 15, and the elastic plate 14 rebounds and resets after losing the pressing force. The protrusion 15 abuts against the limiting end face of the protrusion 16 to form a locking position, preventing the movable buckle 3 from falling back in the opposite direction, thus locking the opening degree and keeping the movable buckle 3 stably in the open state, making it convenient for the user to take out and put in items in the tail box. When it is necessary to close the movable buckle 3, a downward fastening force is applied to the movable buckle 3. The protrusion 16 presses the protrusion 15 again, causing the elastic plate 14 to deform. After the protrusion 16 passes the protrusion 15, it can drive the movable buckle 3 to rotate downward, completing the fastening action.

[0041] In the locked state, the limiting blocks 17 on both sides of the receiving groove 12 of the lower base 2 are correspondingly engaged in the limiting grooves 18 on both sides of the movable buckle 3. When the upper base 1 and the lower base 2 are pulled by an external force along the locking and separating direction, the side wall of the limiting block 17 and the inner wall of the limiting groove 18 abut against each other to bear the load, distributing the separation force to the limiting and matching structure, preventing the hook 4 from deforming or failing due to bearing all the load alone, and effectively enhancing the connection strength and resistance to external damage after the upper and lower bases 2 are locked.

[0042] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0043] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. An NFC tailgate lock, comprising an upper base, a lower base, a movable buckle, a hook, and an unlocking device for driving the hook to unlock, wherein one end of the movable buckle is hinged to the upper base, the hook is movably mounted on the other end of the movable buckle, and the lower base has a slot for engaging with the hook, characterized in that, The unlocking device is built into the interior of the movable buckle; the unlocking device includes an NFC control module, a micro motor and a lever, the NFC control module is electrically connected to the micro motor, and the micro motor is used to drive the lever to move the hook to release the hook from the latch.

2. The NFC tailgate lock according to claim 1, characterized in that, The hook includes a claw and an unlocking block that are fixedly connected to each other, and the unlocking block has an inclined guide surface on the side facing the lever.

3. An NFC tailgate lock according to claim 2, characterized in that, The unlocking lever is floatingly mounted inside the movable buckle via a reset spring, and the end of the hook protrudes from the outside of the movable buckle to engage with the bayonet.

4. An NFC tailgate lock according to claim 3, characterized in that, The movable buckle has a fixed block inside, and the fixed block has a spring mounting hole. One end of the reset spring is housed in the spring mounting hole, and the other end abuts against the top surface of the hook.

5. An NFC tailgate lock according to claim 4, characterized in that, The fixed block is provided with a guide groove, and the top of the unlocking block is slidably fitted into the guide groove, and can move back and forth along the extension direction of the guide groove.

6. An NFC tailgate lock according to claim 1, characterized in that, The upper base and the lower base are each provided with a receiving groove on the opposite side. When the movable buckle is in the locked state, it is fully fitted into the receiving groove.

7. An NFC tailgate lock according to claim 6, characterized in that, The upper base is provided with a mounting groove, and an elastic plate is fixed in the mounting groove. The free end of the elastic plate is provided with a protruding strip.

8. An NFC tailgate lock according to claim 7, characterized in that, The hinge end of the movable buckle is provided with a corresponding protrusion. When the movable buckle is flipped outward to a set angle, the protrusion abuts against the convex strip to lock the opening degree of the movable buckle.

9. An NFC tailgate lock according to claim 6, characterized in that, Limiting blocks are fixedly installed on both sides of the inner wall of the receiving groove of the lower base, and limiting grooves are correspondingly opened on both sides of the outer wall of the movable buckle.

10. An NFC tailgate lock according to claim 9, characterized in that, In the locked state, the limiting block is fitted into the corresponding limiting groove to restrict the separation of the upper base and the lower base along the locking direction.

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