Front lock device and intelligent door lock

Abstract

The utility model relates to the technical field of locksets, and provides a front lock device which comprises a password disk, a lock shell, a bottom plate made of soft rubber materials and a PCB used for being connected with a lock body, the password disk is installed on the lock shell, the lock shell is connected with the bottom plate, a containing space is defined by the lock shell, the bottom plate and the password disk, and the PCB is located in the containing space. According to the front lock device, after the front lock device and the bottom plate are embedded, when the front lock device and the bottom plate are installed on the door body, the bottom plate made of the soft rubber material can be in close contact with the surface of the door body through self elastic deformation, and a gap generated by deformation of the door body is dynamically compensated. Meanwhile, the bottom plate directly replaces a split type silica gel pad, the risk of contact face separation caused by temperature and humidity changes is eliminated, the sealing reliability of the front lock device is effectively improved, and the service life of the front lock device is effectively prolonged. The technical problem that an existing front lock device is prone to falling off due to the environmental influence due to the fact that a split type silica gel pad is utilized, and the sealing performance of a door lock is poor is solved.

Description

Technical Field

[0001] This utility model relates to the field of lock technology, and in particular to a front locking device and a smart door lock. Background Technology

[0002] With the rapid development of the smart home market, front locking devices, as core equipment for home security, directly impact user experience and product reliability due to their installation stability and sealing performance. Currently, the base plate structure of front locking devices on the market is usually made of plastic. However, because plastic materials lack elasticity and deformation capacity, it is difficult to achieve a tight fit when installed on the door surface, easily resulting in visible gaps that affect the product's aesthetics and sealing performance.

[0003] Therefore, an additional elastomer is needed to ensure the product's sealing performance. Currently, a composite structure of plastic or sheet metal base plate and silicone pad is commonly used. However, the silicone pad and base plate are usually fixed by adhesive. Over a long period of time, the two are affected by temperature fluctuations and humidity changes, resulting in deformation and misalignment. The adhesive layer is prone to aging and cracking, and a separation gap gradually forms between the silicone pad and the base plate, which leads to insufficient sealing reliability of the front locking device. Utility Model Content

[0004] In view of this, the present invention provides a front locking device and a smart door lock to solve the technical problem in the prior art where the front locking device uses a split silicone pad that is easily detached due to environmental influences, resulting in poor sealing.

[0005] In a first aspect, this utility model provides a front locking device, comprising: a combination dial, a lock shell, a base plate made of soft rubber material, and a PCB board for connecting to the lock body. The combination dial is mounted on the lock shell, the lock shell is connected to the base plate, the lock shell, the base plate, and the combination dial form an accommodating space, the PCB board is located within the accommodating space, and the combination dial is electrically connected to the PCB board.

[0006] Preferably, the lock housing has an annular protrusion on its periphery, and the base plate has a snap-fit ​​groove, with the annular protrusion installed in the snap-fit ​​groove.

[0007] Preferably, the inner wall of the snap-fit ​​groove is provided with a guide slope, and the annular protrusion is slidably installed in the snap-fit ​​groove through the guide slope.

[0008] Preferably, the front locking device further includes fasteners and fixing posts. The base plate has a through hole communicating with the receiving space. The fixing post is installed in the receiving space. The fastener passes through the corresponding through hole and is connected to the fixing post.

[0009] Preferably, the front locking device further includes an anti-pry switch and an elastic protective cap. The anti-pry switch is electrically connected to the PCB board. The base plate is provided with a mounting hole communicating with the receiving space. The anti-pry switch is installed in the receiving space. The elastic protective cap is installed on the mounting hole and abuts against the anti-pry switch.

[0010] Preferably, the elastic protective cap includes a cap body and an extension, the extension being disposed at the periphery of the elastic protective cap, the cap body extending into the mounting hole, and the extension abutting against the bottom plate at the edge of the mounting hole.

[0011] Preferably, the elastic protective cap has a recessed cavity, and the anti-pry switch abuts against the inner wall of the recessed cavity.

[0012] Preferably, the base plate is a rectangular plate structure with rounded corners.

[0013] Preferably, the base plate is made of polyvinyl chloride.

[0014] Secondly, this utility model provides an intelligent door lock, including a front locking device as described in any of the first aspects above.

[0015] As can be seen from the above technical solutions, the embodiments of this utility model have the following advantages:

[0016] This utility model relates to the field of lock technology and provides a front locking device, including: a combination dial, a lock shell, a base plate made of soft rubber material, and a PCB board for connecting with the lock body. The combination dial is installed on the lock shell, the lock shell is connected to the base plate, and the lock shell, base plate, and combination dial form an accommodating space, within which the PCB board is located. In this utility model, after the front locking device and the base plate are fitted together, when installed on the door, the base plate made of soft rubber material can make close contact with the door surface through its own elastic deformation, dynamically compensating for gaps caused by door deformation. At the same time, the base plate directly replaces the separate silicone gasket, eliminating the risk of contact surface separation due to temperature and humidity changes, effectively improving the sealing reliability and service life of the front locking device. It solves the technical problem of existing front locking devices using separate silicone gaskets that are easily detached due to environmental influences, resulting in poor door lock sealing. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the front locking device and the base plate installation provided in an embodiment of this utility model;

[0019] Figure 2 A schematic diagram of the structure of a front locking device and a base plate after installation, provided in an embodiment of this utility model;

[0020] Figure 3 A cross-sectional structural diagram of a front locking device provided in an embodiment of this utility model;

[0021] Figure 4 for Figure 3 Enlarged structural diagram at point A;

[0022] Figure 5 for Figure 3 Enlarged structural diagram at point B;

[0023] Figure 6 A front view of a front locking device provided in an embodiment of this utility model;

[0024] Figure 7 A left view of a front locking device provided in an embodiment of this utility model;

[0025] Figure 8 A right view of a front locking device provided in an embodiment of this utility model;

[0026] Figure 9 A rear view of a front locking device provided in an embodiment of this utility model;

[0027] Figure 10 A bottom view of a front locking device provided in an embodiment of this utility model;

[0028] Figure 11 A top view of a front locking device provided in an embodiment of this utility model;

[0029] Figure 12 This is a schematic diagram of the symmetrical structure of a front locking device provided in an embodiment of the present utility model.

[0030] Reference numerals: 1. Lock case; 2. Base plate; 3. Elastic protective cap; 4. Fastener; 5. Fixing post; 6. Fixing component; 7. Through hole; 8. Anti-pry switch; 9. Annular protrusion; 10. Snap-fit ​​groove; 11. Camera; 12. Combination dial; 13. Handle; 14. Fingerprint recognition module; 15. Emergency power supply interface; 16. Guide slope; 17. Mounting hole; 18. PCB board; 19. Extension; 20. Cap body; 21. Cavity. Detailed Implementation

[0031] This utility model provides a front locking device to solve the technical problem of poor sealing caused by the use of a split silicone gasket in existing front locking devices.

[0032] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0033] In the description of this utility model, it should be noted that the terms "front", "rear", "upper", "lower", "both ends", "center", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] As can be seen from the background technology, the base plate structure of the front locking device currently on the market has the following defects: First, the base plate is not elastic, and there are gaps after it is installed on the door, which is unsightly; Second, the silicone pad is set on the base plate or sheet metal base plate, which leads to higher material and assembly costs; Third, the anti-pry switch is an exposed part without the protection of the outer shell.

[0036] Therefore, in this invention, to ensure that the fully automatic front locking device fits perfectly against the door without any gaps after installation, and to minimize the overall assembly cost, a base plate made of elastic material is proposed. This eliminates the need for an additional elastic body, and a snap-fit ​​groove is provided on the base plate to engage with the annular protrusion on the front locking device. This results in more precise positioning and better sealing during installation. Furthermore, an elastic protective cap is fitted onto the anti-pry switch to prevent it from being exposed, thereby extending the service life of the front locking device.

[0037] Please see Figures 1-12In this embodiment, a front locking device is provided, including: a combination dial 12, a lock shell 1, a base plate 2 made of soft rubber material, and a PCB board 18 for connecting with the lock body. The combination dial 12 is installed on the lock shell 1, the lock shell 1 is connected to the base plate 2, and the lock shell 1, the base plate 2 and the combination dial 12 enclose a receiving space. The PCB board 18 is located in the receiving space, and the combination dial 12 is electrically connected to the PCB board.

[0038] Understandably, the base plate 2 is made of soft rubber material and is precisely fitted with the lock housing 1 to form the front locking device. When the front locking device is installed on the door, the elasticity of the base plate 2 allows for adaptive deformation, dynamically conforming to the door surface, effectively compensating for installation errors or door deformation of 0.1-2mm, ensuring seamless contact between the front locking device and the door, improving the sealing performance of the front locking device, and also enhancing the overall aesthetics.

[0039] In addition, the one-piece molded base plate 2 replaces the traditional split elastomer (such as silicone pad) with an integrated design, eliminating the phenomenon of elastomer falling off due to temperature and humidity at the interface between the additional parts and the base plate 2. This simplifies the assembly process and reduces the cost of accessories.

[0040] Please see Figure 1 and Figure 4 In a preferred embodiment, in order to improve the fitting degree between the lock housing 1 and the base plate 2, the lock housing 1 is provided with an annular protrusion 9 around its periphery, and the base plate 2 is provided with a snap-fit ​​groove 10, with the annular protrusion 9 installed in the snap-fit ​​groove 10.

[0041] Understandably, the annular protrusions 9 are evenly distributed in a ring around the outer periphery of the lock housing 1, with a height of 1.2-2.5mm and a width of 3-5mm; the locking groove 10 has a depth of 1.0-2.0mm and a groove width slightly smaller than the width of the annular protrusions 9, forming an interference fit structure. During installation, the base plate 2 achieves adaptive engagement under pressure by precisely matching the annular protrusions 9 with the locking groove 10, utilizing the elastic deformation of the soft rubber material to form a reliable locking force, ensuring the axial stability of the front locking assembly under conditions such as vibration and temperature deformation.

[0042] Please see Figure 4 In a preferred embodiment, the inner wall of the snap-fit ​​groove 10 is provided with a guide slope 16, and the annular protrusion 9 is slidably installed in the snap-fit ​​groove 10 through the guide slope 16.

[0043] Understandably, the end of the annular protrusion 9 that contacts the locking groove 10 has a rounded corner, which can effectively reduce the frictional resistance generated during assembly. Meanwhile, the guide slope 16 has an inclination angle of 40°-45°. Preferably, the guide slope 16 has an inclination angle of 45°, used to guide the rounded corner on the annular protrusion 9 to slide along the guide slope 16 to the bottom of the locking groove 10, achieving self-alignment assembly.

[0044] In other words, when the staff needs to fit the annular protrusion 9 into the snap-fit ​​groove 10, the guide slope 16 on the snap-fit ​​groove 10 allows the annular protrusion 9 to slide along a predetermined path. No special tools are required during the operation, and a single person can complete the assembly, significantly improving installation efficiency. At the same time, the closed-loop sealing boundary formed by the lock housing 1 and the base plate 2 can effectively prevent moisture and dust from penetrating, greatly extending the service life of the door lock.

[0045] Please see Figure 1 In a preferred embodiment, to further improve the stability of the front locking device installation, the front locking device also includes a fastener 4 and a fixing post 5. The base plate 2 is provided with a through hole 7 communicating with the receiving space. The fixing post 5 is installed in the receiving space, and the fastener 4 passes through the corresponding through hole 7 and is connected to the fixing post.

[0046] It is understandable that multiple through holes 7 are symmetrically arranged on the left and right sides of the end face of the base plate 2. The front locking device has a fixing post 5 corresponding to the through hole 7. The fastener 4 passes through the through hole 7 on the base plate 2 and is screwed into the internal thread of the fixing post 5. The lock shell 1 and the base plate 2 are locked and fixed through the thread engagement, which effectively prevents the relative displacement between the base plate 2 and the lock shell 1 due to the difference in material hardness.

[0047] Meanwhile, the symmetrically distributed through holes 7 ensure that the clamping force of the fastener 4 on the base plate 2 is evenly transmitted, reducing the risk of local pressure deformation of the base plate 2 (such as edge warping) and ensuring that the base plate 2 and the lock shell 1 are fully fitted.

[0048] In a preferred embodiment, the number of through holes 7 increases in increments of 2, such as 2, 4, 6, etc. Preferably, the number of through holes 7 is 10.

[0049] In a preferred embodiment, the fastener 4 may include, but is not limited to, Phillips head pan head screws, internal hex countersunk screws, and external hex head screws.

[0050] Preferably, fastener 4 is a cross-head pan head screw M3×6.

[0051] In a preferred embodiment, the material of the fastener 4 includes, but is not limited to, carbon steel, stainless steel, alloy steel, and titanium alloy.

[0052] Preferably, the fastener 4 is made of carbon steel.

[0053] In a preferred embodiment, fastener 4 is nickel-plated to improve its durability.

[0054] Please see Figure 1 , Figure 2 , Figure 3 and Figure 5In a preferred embodiment, to improve the security performance of the front locking device, the front locking device further includes an anti-pry switch 8 and an elastic protective cap 13. The anti-pry switch 8 is electrically connected to the PCB board 18. The base plate 2 is provided with a mounting hole 17 communicating with the receiving space. The anti-pry switch 8 is installed in the receiving space, and the elastic protective cap 13 is installed on the mounting hole 17 and abuts against the anti-pry switch 8.

[0055] It is understandable that the anti-pry switch 8 is located on one side of the center point along the length of the lock housing 1. The anti-pry switch 8 is covered with an elastic protective cap 13. After the current lock device is installed on the door, the elastic protective cap 3 will protrude 0.3-0.5mm from the surface of the base plate 2 and directly abut against the surface of the door panel. When an external force pries the lock body, causing the door panel to deform, the anti-pry switch 8 will be triggered.

[0056] Furthermore, the tamper-proof switch 8 includes a base shell, a sensor, a spring, and an tamper-proof pressure plate. The base shell has an internal cavity, the sensor is fixed to the bottom plate of the cavity, the spring elastically abuts against the sensor's trigger end, and the tamper-proof pressure plate covers the open end of the base shell. Under normal installation conditions, spring compression causes the tamper-proof switch 8 to disconnect; when an external force pries the switch causing the spring to rebound, the tamper-proof switch 8 connects and triggers an alarm.

[0057] In a preferred embodiment, the elastic protective cap 13 includes a cap body 20 and an annularly arranged extension 19. The extension 19 is located at the periphery of the elastic protective cap 13. The cap body 20 extends into the mounting hole 17, and the extension 19 abuts against the bottom plate 2 at the edge of the mounting hole 17.

[0058] Understandably, the elastic protective cap 13 acts to wrap around the anti-pry switch 8, and its perimeter is provided with an extension 19 for engaging with the lower end face of the mounting hole 17. Preferably, the extension 19 is provided at the bottom of the elastic protective cap 3, so that the elastic protective cap 3 is engaged with the base plate 2, thereby ensuring that the elastic protective cap 3 can be firmly fitted onto the anti-pry switch 8 and ensuring that the anti-pry switch 8 is not exposed on the surface.

[0059] Furthermore, the elastic protective cap 13 is made of silicone material with a hardness of 60 degrees. While ensuring the seal between the anti-pry switch 8 and the base plate 2, it also provides a certain degree of cushioning, thus ensuring that the anti-pry switch 8 is not damaged. At the same time, due to the special properties of the elastic protective cap 13 material, it can also effectively absorb the impact energy generated by daily door opening and closing, preventing accidental alarm activation.

[0060] In a preferred embodiment, the outer surface of the elastic protective cap 13 is provided with an anti-slip textured structure.

[0061] Understandably, the anti-slip texture structure is specifically a regularly arranged series of raised and recessed patterns. By increasing the surface friction coefficient, the raised and recessed patterns enable operators to apply force precisely when installing or removing the elastic protective cap 13, thus avoiding misalignment due to slippage.

[0062] Please see Figure 5 In a preferred embodiment, the elastic protective cap 13 is provided with a cavity 21, and the anti-pry switch 8 abuts against the inner wall of the cavity 21.

[0063] Please see Figure 1 and Figure 2 In a preferred embodiment, in order to reduce stress concentration, the base plate 2 is a rectangular plate structure with rounded corners.

[0064] Understandably, the rounded corners of the base plate 2 significantly reduce the stress concentration factor and prevent corner cracking under vibration and impact conditions. At the same time, the elasticity of the soft rubber material further enhances the impact resistance of the base plate 2.

[0065] Please see Figure 1 and Figure 2 In a preferred embodiment, the lock housing 1 also adopts a rectangular plate structure with rounded corners on all four sides to ensure a tight fit with the base plate 2.

[0066] In a preferred embodiment, the base plate 2 is made of polyvinyl chloride.

[0067] Understandably, using PVC soft rubber for the base plate 2 effectively fills the microscopic uneven areas between the door and the front locking device, thereby improving the uniformity of the seal. At the same time, PVC has stronger weather resistance than ordinary soft rubber materials, and is less prone to hardening or cracking in humid environments and under temperature changes, avoiding seal failure caused by material aging. Furthermore, its moderate surface friction creates a slight adsorption effect when in contact with the door, helping to offset vibration displacement and maintain long-term tightness. This simplifies the assembly process, reduces the risk of separation at multiple material interfaces, and controls production costs by reducing the number of parts, thus achieving a balance between optimized sealing performance and structural reliability.

[0068] Please see Figures 6 to 10 In a preferred embodiment, the front locking device further includes a camera 11 and a handle 13, wherein the camera 11 and the handle 13 are sequentially disposed on the end face of the lock housing 1, and a fingerprint recognition module 14 is disposed on the top surface of the handle 13.

[0069] Understandably, the camera 11, keypad 12, and handle 13 are fixed to the end face of the front locking device from top to bottom through the pre-set mounting holes on the lock housing 1. The keypad 12 is located below the camera 11, and its operating interface has a rectangular layout, with its long side parallel to the length of the lock housing 1. A fingerprint recognition module 14 is located on the top of the handle 13. The power supply interfaces of each functional component are all centrally arranged along the center line of the back plate of the lock housing 1.

[0070] Preferably, the fingerprint recognition module 14 is integrated into the top arc surface of the handle 13 with a progressive tilt angle of 5 to 8 degrees.

[0071] Based on the design where the long side of the keypad 12 faces the same direction as the lock case 1, the distribution of the numeric keys conforms to the natural outstretching direction of the human hand, effectively shortening the time required to enter the password each time. Meanwhile, the fingerprint recognition module 14 is mounted on top of the handle 13 at a certain angle, allowing the user's hand to hang naturally during use, enabling the fingerprint to fit more closely to the recognition area, effectively reducing the number of fingerprint recognition failures and thus improving user satisfaction.

[0072] Please see Figure 11 In a preferred embodiment, in order to extend the service life of the front locking device, the front locking device further includes an emergency power supply interface 15, which is disposed on the side wall of the top surface of the lock housing 1.

[0073] It is understood that the side wall of the top surface of the front locking device is provided with an emergency power supply interface 15. The emergency power supply interface 15 includes, but is not limited to, a Type-C interface, a USB-A interface and a micro USB interface, preferably a Type-C interface.

[0074] Please see Figure 2 In a preferred embodiment, to improve the installation stability of the front locking device and the rear locking body, the front locking device further includes a fixing member 6, and the front locking device is connected to the rear locking body through the fixing member 6.

[0075] It is understandable that at least one set of fasteners 6 should be installed, with two fasteners 6 forming a group, to ensure the connection between the lock housing 1 and the rear lock body. Specifically, the fasteners 6 are pull screws.

[0076] The fixing member 6 installed inside the front locking device can pass through the through hole 7 on the base plate 2 and connect to the rear locking body.

[0077] This utility model embodiment provides an intelligent door lock, including any of the front locking devices provided in the previous embodiment.

[0078] The foregoing has provided a detailed description of the front locking device and intelligent door lock body provided by this utility model. For those skilled in the art, based on the ideas of the embodiments of this utility model, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A front locking device, characterized in that, include: The lock includes a combination dial, a lock housing, a base plate made of soft rubber, and a PCB board for connecting to the lock body. The combination dial is mounted on the lock housing, the lock housing is connected to the base plate, and the lock housing, base plate, and combination dial together form a receiving space. The PCB board is located within the receiving space, and the combination dial is electrically connected to the PCB board.

2. The front locking device according to claim 1, characterized in that, The lock housing has an annular protrusion around its periphery, and the base plate has a snap-fit ​​groove, with the annular protrusion installed within the snap-fit ​​groove.

3. The front locking device according to claim 2, characterized in that, The inner wall of the snap-fit ​​groove is provided with a guide slope, and the annular protrusion is slidably installed in the snap-fit ​​groove through the guide slope.

4. The front locking device according to claim 1, characterized in that, The front locking device also includes fasteners and fixing posts. The base plate has a through hole communicating with the receiving space. The fixing post is installed in the receiving space. The fastener passes through the corresponding through hole and is connected to the fixing post.

5. The front locking device according to claim 1, characterized in that, The front locking device also includes an anti-pry switch and an elastic protective cap. The anti-pry switch is electrically connected to the PCB board. The base plate has a mounting hole communicating with the receiving space. The anti-pry switch is installed in the receiving space. The elastic protective cap is installed on the mounting hole and abuts against the anti-pry switch.

6. The front locking device according to claim 5, characterized in that, The elastic protective cap includes a cap body and an extension. The extension is located around the periphery of the elastic protective cap. The cap body extends into the mounting hole, and the extension abuts against the base plate at the edge of the mounting hole.

7. The front locking device according to claim 5, characterized in that, The elastic protective cap has a recessed cavity, and the anti-pry switch abuts against the inner wall of the recessed cavity.

8. The front locking device according to claim 1, characterized in that, The base plate is a rectangular plate structure with rounded corners.

9. The front locking device according to any one of claims 1-8, characterized in that, The base plate is made of polyvinyl chloride.

10. A smart door lock, characterized in that, Includes the front locking device as described in any one of claims 1-9.

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