Fingerprint lock with waterproof function

By designing the transmission mechanism and rubber pads, the structural damage and reduced waterproof performance of fingerprint locks when replacing desiccants have been solved, achieving convenient replacement and waterproof lock body.

CN224228403UActive Publication Date: 2026-05-12SHENZHEN ZHONGTAIZHIFENG INTERNET OF THINGS TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHENZHEN ZHONGTAIZHIFENG INTERNET OF THINGS TECH CO LTD
Filing Date
2025-05-08
Publication Date
2026-05-12

AI Technical Summary

Technical Problem

Existing fingerprint locks require specialized tools to disassemble when replacing the desiccant, which poses a risk of damaging the lock structure and reducing its waterproof performance.

Method used

A transmission mechanism was designed that drives the transmission shaft and transmission plate to slide by pressing the sliding rod, thereby causing the mounting plate to slide out to replace the moisture-proof material. The gaps are sealed by rubber pads and the transmission plate to ensure the waterproof performance of the lock body.

Benefits of technology

It enables convenient replacement of moisture-proof materials, avoids structural damage and dust ingress, maintains the waterproof performance of the lock body, and reduces operational risks.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a fingerprint lock with a waterproof function, which relates to the technical field of fingerprint lock equipment, and comprises a fingerprint lock body, a square plate connected to the fingerprint lock body in a sliding manner, and a transmission mechanism comprising a first transmission plate connected to the fingerprint lock body in a sliding manner, a first connecting rod is slidably connected to the first transmission plate, a transmission rod is slidably connected to the side, away from the first transmission plate, of the first connecting rod, a rotating block is fixedly connected to the transmission rod, a threaded rod is fixedly connected to the rotating block, a mounting plate is in threaded connection to the threaded rod, and a conical block is fixedly connected to the rotating block through a second connecting rod; a fourth connecting rod is fixedly connected to the conical block through a transverse plate, the fourth connecting rod is slidably connected with a second transmission plate through a transmission shaft, the mounting plate slides outwards, the moisture absorption material is pushed out to complete replacement, the second transmission plate made of rubber tightly blocks a gap between the first transmission plate and the fingerprint lock body, and the risk of structural damage caused by disassembly is avoided.
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Description

Technical Field

[0001] This utility model relates to the field of fingerprint lock technology, specifically a fingerprint lock with waterproof function. Background Technology

[0002] With the continuous development of smart home technology, fingerprint locks, as a convenient and secure access control device, are becoming increasingly popular. Traditional mechanical locks require keys to open, which poses risks such as lost, forgotten, or stolen keys. In contrast, fingerprint locks unlock by recognizing the user's fingerprint, eliminating the need to carry keys and greatly improving convenience and security.

[0003] Existing fingerprint locks typically use desiccants to maintain internal dryness. Many fingerprint locks encapsulate the desiccant in concealed or difficult-to-remove locations, requiring users to use specialized tools to disassemble the entire lock body. Improper handling may even damage the lock structure, leading to a decrease in waterproof performance. Current technology is both inconvenient and poses potential risks in terms of desiccant replacement. Utility Model Content

[0004] The purpose of this invention is to provide a waterproof fingerprint lock to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a waterproof fingerprint lock, comprising a fingerprint lock body, a square plate slidably connected to the fingerprint lock body, and further comprising:

[0006] The transmission mechanism includes a first transmission plate slidably connected to the fingerprint lock body, a first connecting rod slidably connected to the first transmission plate, a transmission rod slidably connected to the side of the first connecting rod away from the first transmission plate, a rotating block fixedly connected to the transmission rod, a threaded rod fixedly connected to the rotating block, a mounting plate threadedly connected to the threaded rod, a conical block fixedly connected to the rotating block via a second connecting rod, a fourth connecting rod fixedly connected to the conical block via a cross plate, and a second transmission plate slidably connected to the fourth connecting rod via a transmission shaft.

[0007] Furthermore, a fifth connecting rod is fixedly connected to the horizontal plate on the conical block, and a sliding rod is fixedly connected to the fifth connecting rod.

[0008] The above technical solution is adopted: by setting a fifth connecting rod, and a sliding rod connected to the fifth connecting rod, when in use, simply pressing the sliding rod will cause the fourth connecting rod to drive the transmission shaft to slide down in the second transmission plate.

[0009] Furthermore, a rubber pad is fixedly connected to the bottom of the fingerprint lock body.

[0010] The above technical solution, by incorporating rubber pads, prevents the back of the fingerprint lock body from completely adhering to the door after installation.

[0011] Furthermore, a universal joint is fixedly connected to the rotating block, and the side of the universal joint away from the rotating block is fixedly connected to the second connecting rod.

[0012] The above technical solution is adopted: by setting a universal joint, the connection between the rotating block and the second connecting rod is more flexible.

[0013] Furthermore, a third connecting rod is fixedly connected to the mounting plate, and the third connecting rod is slidably connected to the fingerprint lock body.

[0014] The above technical solution is adopted: by fixing a third connecting rod to the mounting plate, the third connecting rod slides at the bottom of the threaded rod when it slides inside the fingerprint lock body, thereby limiting the position of the mounting plate.

[0015] Furthermore, a slanted groove is provided on the transmission rod, and the end of the first connecting rod away from the first transmission plate is slidably connected to the slanted groove on the transmission rod.

[0016] The above technical solution is adopted: by opening an inclined groove on the transmission rod, the transmission rod will rotate when the first connecting rod slides during use.

[0017] Furthermore, a limit rod is fixedly connected to the fingerprint lock body, and the second transmission plate is slidably connected within the limit rod on the fingerprint lock body.

[0018] The above technical solution is adopted: by setting a limit rod, the position of the second transmission plate is limited during use.

[0019] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0020] In this invention, during normal use, the moisture-proof material is placed on the mounting plate, and the square plate is sealed to the fingerprint lock body by bolts. When the moisture-proof material needs to be replaced, the sliding rod is pressed down, and the sliding rod drives the fifth connecting rod, which in turn drives the transmission shaft to slide on the second transmission plate. The second transmission plate drives the first transmission plate to slide on the fingerprint lock body, causing the first connecting rod to move within the inclined groove of the transmission rod. The inclined groove limits the rotation of the transmission rod, which in turn drives the rotating block and the threaded rod, ultimately causing the mounting plate to slide outward and push out the moisture-absorbing material to complete the replacement. Throughout the replacement process, the rubber-made second transmission plate tightly seals the gap between the first transmission plate and the fingerprint lock body, preventing dust from entering, ensuring the waterproof performance of the lock body, and avoiding the risk of structural damage caused by disassembly. Attached Figure Description

[0021] Figure 1This is a schematic diagram of the overall structure of a waterproof fingerprint lock.

[0022] Figure 2 This is a schematic diagram showing the location of the rubber pad in a waterproof fingerprint lock.

[0023] Figure 3 This is a schematic diagram showing the position of the rotating block in a waterproof fingerprint lock.

[0024] Figure 4 This is a schematic diagram showing the location of the second transmission plate in a waterproof fingerprint lock.

[0025] Figure 5 This is a schematic diagram of a waterproof fingerprint lock with the fingerprint lock body removed.

[0026] Numbering on the map:

[0027] 1. Fingerprint lock body;

[0028] 2. Transmission mechanism; 21. First transmission plate; 22. First connecting rod; 23. Second transmission plate; 24. Transmission rod; 25. Mounting plate; 26. Rotating block; 27. Second connecting rod; 28. Threaded rod; 29. ​​Third connecting rod; 210. Conical block; 211. Fourth connecting rod; 212. Transmission shaft;

[0029] 3. Slide bar; 31. Fifth connecting rod; 32. Square plate. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Example:

[0032] like Figures 1-5 As shown, this utility model provides a technical solution: a waterproof fingerprint lock, including a fingerprint lock body 1, and a square plate 32 slidably connected to the fingerprint lock body 1, and further including:

[0033] The transmission mechanism 2 includes a first transmission plate 21 slidably connected to the fingerprint lock body 1, a first connecting rod 22 slidably connected to the first transmission plate 21, a transmission rod 24 slidably connected to the side of the first connecting rod 22 away from the first transmission plate 21, a rotating block 26 fixedly connected to the transmission rod 24, a threaded rod 28 fixedly connected to the rotating block 26, a mounting plate 25 threadedly connected to the threaded rod 28, a conical block 210 fixedly connected to the rotating block 26 via a second connecting rod 27, a fourth connecting rod 211 fixedly connected to the conical block 210 via a horizontal plate, and a second transmission plate 23 slidably connected to the fourth connecting rod 211 via a transmission shaft 212.

[0034] In this invention, during normal use, the moisture-proof material is placed on the mounting plate 25, and the square plate 32 is sealed to the fingerprint lock body 1 by bolts. When the moisture-proof material needs to be replaced, the sliding rod 3 is pressed down, and the sliding rod 3 drives the fifth connecting rod 31, which in turn drives the transmission shaft 212 to slide on the second transmission plate 23. The second transmission plate 23 drives the first transmission plate 21 to slide on the fingerprint lock body 1, causing the first connecting rod 22 to move in the inclined groove of the transmission rod 24. The inclined groove limits the rotation of the transmission rod 24, which in turn drives the rotating block 26 and the threaded rod 28, ultimately causing the mounting plate 25 to slide outward and push out the moisture-absorbing material to complete the replacement. Throughout the replacement process, the rubber second transmission plate 23 tightly seals the gap between the first transmission plate 21 and the fingerprint lock body 1 to prevent dust from entering, ensuring the waterproof performance of the lock body and avoiding the risk of structural damage caused by disassembly.

[0035] like Figures 3 to 5 As shown, a fifth connecting rod 31 is fixedly connected to the horizontal plate on the conical block 210, and a sliding rod 3 is fixedly connected to the fifth connecting rod 31. By setting the fifth connecting rod 31 and connecting the sliding rod 3 to the fifth connecting rod 31, the manual power can be converted into mechanical transmission power by directly pressing the sliding rod 3 during use. This causes the fourth connecting rod 211 to drive the transmission shaft 212 to slide down in the second transmission plate 23, realizing one-handed operation of the drive transmission mechanism 2 and simplifying the process of replacing moisture-proof materials.

[0036] like Figure 2 As shown, a rubber pad is fixedly connected to the bottom of the fingerprint lock body 1. By fixing the rubber pad to the bottom of the fingerprint lock body 1, the back of the fingerprint lock body 1 can be prevented from being completely flush with the door after it is installed on the door, forming a buffer space to prevent water from seeping into the door and reduce the impact of door closing vibration on the internal structure of the lock body.

[0037] like Figures 3 to 5As shown, a universal joint is fixedly connected to the rotating block 26. The side of the universal joint on the rotating block 26 away from the rotating block 26 is fixedly connected to the second connecting rod 27. By fixing the universal joint to the rotating block 26, flexible rotation at multiple angles can be achieved, making the connection between the rotating block 26 and the second connecting rod 27 more flexible, ensuring the effective transmission of force during the transmission process, and avoiding transmission jamming due to angle deviation.

[0038] like Figure 3 As shown, a third connecting rod 29 is fixedly connected to the mounting plate 25. The third connecting rod 29 is slidably connected inside the fingerprint lock body 1. By fixing the third connecting rod 29 to the mounting plate 25, it slides at the bottom of the threaded rod 28 when sliding inside the fingerprint lock body 1, forming a double limiting structure. This not only prevents the mounting plate 25 from rotating, but also avoids displacement that could affect the replacement of the moisture-proof material.

[0039] like Figures 3 to 5 As shown, a groove is provided on the transmission rod 24. The end of the first connecting rod 22 away from the first transmission plate 21 is slidably connected to the groove on the transmission rod 24. By providing a groove on the transmission rod 24, when the first connecting rod 22 slides, the groove provides directional constraint to it, causing the transmission rod 24 to rotate, converting linear motion into rotational motion, and providing a power basis for the transmission of subsequent components such as the rotating block 26 and the threaded rod 28.

[0040] like Figure 4 As shown, a limit rod is fixedly connected to the fingerprint lock body 1, and the second transmission plate 23 is slidably connected to the limit rod on the fingerprint lock body 1. By fixing the limit rod to the fingerprint lock body 1 and slidably connecting the second transmission plate 23 to the limit rod, the movement trajectory of the second transmission plate 23 can be effectively restricted, preventing it from deviating or shaking during transmission, ensuring the stable operation of the transmission mechanism 2, and improving the sealing of the lock body.

[0041] Working principle: such as Figures 1 to 5 As shown, during normal use, the moisture-proof material is placed on the mounting plate 25, and the square plate 32 is sealed to the fingerprint lock body 1 using bolts.

[0042] When replacement is needed, simply press down the sliding rod 3, causing the sliding rod 3 to drive the fifth connecting rod 31 to press down, causing the fifth connecting rod 31 to drive the transmission shaft 212 to slide on the second transmission plate 23, causing the second transmission plate 23 to drive the first transmission plate 21 to slide on the fingerprint lock body 1, causing the first connecting rod 22 to slide in the inclined groove on the transmission rod 24. Under the limiting action of the inclined groove, the transmission rod 24 rotates, causing the rotating block 26 to rotate, causing the threaded rod 28 to rotate, causing the mounting plate 25, which is threadedly connected to the threaded rod 28, to slide outward in the fingerprint lock body 1, pushing out the moisture-absorbing material on the mounting plate 25, at which point replacement can be performed;

[0043] At the same time, the rubber-material second transmission plate 23 will tightly seal the gap between the first transmission plate 21 and the fingerprint lock body 1 to prevent dust from falling in and reduce the risk of water ingress.

[0044] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. The implementation schemes in the above embodiments can also be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A waterproof fingerprint lock, comprising a fingerprint lock body (1) and a square plate (32) slidably connected to the fingerprint lock body (1), characterized in that, Also include: Transmission mechanism (2), the transmission mechanism (2) includes the first transmission plate (21) that is connected on the fingerprint lock body (1), the first transmission plate (21) is connected with the first connecting rod (22) on the sliding, the first connecting rod (22) is connected with the transmission rod (24) on the side away from the first transmission plate (21) of the sliding, the transmission rod (24) is fixedly connected with the rotating block (26), the rotating block (26) is fixedly connected with the threaded rod (28), the threaded rod (28) is threadedly connected with the mounting plate (25), the rotating block (26) is fixedly connected with the conical block (210) through the second connecting rod (27), the conical block (210) is fixedly connected with the fourth connecting rod (211) through the cross plate, the fourth connecting rod (211) is connected with the second transmission plate (23) through the transmission shaft (212) of the sliding.

2. The fingerprint lock with waterproof function according to claim 1, characterized in that: The cross plate on the conical block (210) is fixedly connected with the fifth connecting rod (31), and the fifth connecting rod (31) is fixedly connected with the lower sliding rod (3).

3. The fingerprint lock with waterproof function according to claim 2, characterized in that: The bottom of the fingerprint lock body (1) is fixedly connected with a rubber pad.

4. The fingerprint lock with waterproof function according to claim 2, characterized in that: The rotating block (26) is fixedly connected with a universal joint, and the universal joint on the rotating block (26) is fixedly connected on the second connecting rod (27) on the side away from the rotating block (26).

5. The fingerprint lock with waterproof function according to claim 2, characterized in that: The mounting plate (25) is fixedly connected with the third connecting rod (29), and the third connecting rod (29) is connected in the fingerprint lock body (1) of the sliding.

6. The fingerprint lock with waterproof function according to claim 1, characterized in that: The transmission rod (24) is provided with an inclined groove, and the first connecting rod (22) is connected in the inclined groove on the transmission rod (24) on the end away from the first transmission plate (21).

7. The fingerprint lock with waterproof function according to claim 5, characterized in that: The fingerprint lock body (1) is fixedly connected with a limiting rod, and the second transmission plate (23) is connected in the limiting rod on the fingerprint lock body (1) of the sliding.