Large mechanical intelligent lock based on Internet of Things

By introducing telescopic seals and multi-key structures into large mechanical smart locks, the problem of contaminant intrusion caused by the gap between the lock beam and the lock body is solved, thereby improving the sealing and adaptability of the lock, extending its service life and reducing maintenance costs.

CN223647581UActive Publication Date: 2025-12-09SICHUAN ROAD BRIDGE & BRIDGE ENG CO LTD
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Patent Information

Application Number
CN202423235613.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-27
Publication Date
2025-12-09
Estimated Expiration
2034-12-27

AI Technical Summary

Technical Problem

Existing IoT-based mechanical smart padlocks suffer from problems such as contaminant intrusion due to gaps between the lock beam and lock body, lock corrosion, and low compatibility.

Method used

A large-scale mechanical intelligent lock was designed, which adopts a detachable telescopic seal and multiple equally spaced lock keys. Combined with the sealing design of rubber rings and rubber cylinders, and the drainage structure of the short lock hole water outlet, it can achieve effective sealing of the lock body and height adjustment of the lock beam.

Benefits of technology

It effectively prevents contaminants from entering, extends the life of the lock, improves its applicability and reliability, reduces maintenance costs, and enhances the waterproof performance and durability of the lock.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a large-scale mechanical intelligent lock based on the Internet of Things, which comprises a lock body, a lock beam movably arranged on the lock body, a spring bolt which is arranged in the lock body in a sliding manner and is matched with the lock beam for locking, a spring bolt spring connected with the spring bolt, and a circuit board, a power supply module, a communication module and a sensor module which are arranged in the lock body, the lock body is provided with a long lock rod and a short lock rod, the mechanical transmission component drives the lock tongue to slide so as to unlock the lock, the upper end of the lock body is provided with a long lock hole and a short lock hole, the long lock rod of the lock beam is inserted into the long lock hole, and the short lock rod of the lock beam is inserted into the short lock hole. The situation that pollutants such as rainwater and dust intrude into the lock body from a gap between the lock beam and the lock body is effectively reduced, the lock keys arranged in the length direction of the long lock rod at equal intervals are matched with the lock tongue, the lock beam can adapt to locking objects of different sizes, and therefore the universality and practicability of the lock are improved.
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Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of internet of things intelligent lock, concretely relates to a large -scale mechanical intelligent lock based on internet of things. BACKGROUND

[0002] With the improvement of safety protection standard in modern industry and logistics fields, and the continuous development and popularization of internet of things technology, mechanical intelligent lock based on internet of things is widely applied and popularized because of its intelligent management, support multiple unlocking mode, high security, low management cost and low maintenance difficulty and other advantages;Mechanical intelligent padlock based on internet of things is a new type of lock based on traditional mechanical padlock and combined with modern internet of things technology, for example, the application number for CN201710878333.8 a kind of intelligent internet of things lock and the application number for CN202420640332.5 a kind of low power consumption internet of things padlock;The padlock usually includes a lock body for accommodating all other components, a lock beam, a lock tongue cooperating with the lock beam to realize the opening and closing function of the lock, a mechanical transmission component for converting the control signal emitted by the circuit board into the mechanical movement of the lock tongue, a communication module for realizing the information interaction between the padlock and the internet of things platform or other devices, a sensor module for detecting various states of the padlock, a circuit board for processing unlocking request, receiving and sending communication signals, and a power module for providing power support for the electronic devices of the entire padlock;Such mechanical intelligent padlock not only has the basic function of traditional padlock, but also realizes comprehensive improvement in unlocking mode, management function and safety performance.

[0003] However, in actual use, the mechanical intelligent padlock based on internet of things still has some problems to be solved, the existing intelligent lock beam and lock body are mostly active contact mode, so there will inevitably be a gap, which will cause rain, dust and other pollutants to invade the inside of the lock body, and then cause the rust and blockage of the mechanical structure inside the lock body, and the corrosion of the circuit board, finally affect the normal use of the lock, and even cause the damage of the electronic lock;In addition, the height of the lock beam of the existing mechanical intelligent lock is fixed, and when facing different sizes of locking objects, it cannot be adjusted according to the size of different locking objects, and the adaptability is low. SUMMARY

[0004] The utility model aims at providing a large -scale mechanical intelligent lock frame based on internet of things, solve the problem in prior art.

[0005] In order to realize the above purpose, the utility model adopts the technical scheme that:

[0006] The application discloses a large mechanical intelligent lock based on the Internet of Things, which comprises a lock body, a lock beam movably arranged on the lock body, a lock bolt slidably arranged in the lock body and matched with the lock beam, a lock bolt spring connected with the lock bolt, a circuit board, a power module, a communication module and a sensor module arranged in the lock body, and a mechanical transmission part for driving the lock bolt to slide to release the lock, wherein an upper end of the lock body is provided with a long lock hole for inserting a long lock rod of the lock beam and a short lock hole for inserting a short lock rod of the lock beam, the long lock rod is provided with a plurality of lock keys matched with the lock bolt at equal intervals along a length direction of the long lock rod, and a telescopic sealing piece is detachably connected between a top of the long lock hole and an upper end of the long lock rod.

[0007] Preferably, the telescopic sealing piece comprises a rubber ring detachably connected to the upper end of the lock body and coaxial with an axis of the long lock hole, a rubber cylinder movably sleeved on the upper end of the long lock rod, a rubber bellows with two ends connected to the rubber ring and the rubber cylinder respectively, and a sealing sleeve threadedly sleeved on the upper end of the long lock rod, wherein an inner tapered cavity is formed in a lower end of the sealing sleeve, an outer lateral wall of the rubber cylinder is in contact with an inner lateral wall of the tapered cavity, and an inner diameter of the rubber ring is larger than a diameter of the long lock rod.

[0008] Preferably, a rubber pad is arranged on the inner lateral wall of the tapered cavity, and an anti-skid pattern is arranged on an outer lateral wall of the sealing sleeve.

[0009] Preferably, a plurality of locking pieces are arranged on the upper end of the lock body, and a plurality of locking holes corresponding to the locking pieces are arranged on the rubber ring, wherein the locking piece comprises a locking column in a cylindrical shape connected to the upper end of the lock body, and a locking head in a semicircular shape connected to an upper end of the locking column and with a center of the locking head located on an axis of the locking column.

[0010] Preferably, a diameter of the locking head is larger than a diameter of the locking column, a diameter of the locking hole is equal to the diameter of the locking column, and a height of the locking hole is less than or equal to a height of the locking column.

[0011] Preferably, a limiting ring is fixedly sleeved on the upper end of the long lock rod, the rubber cylinder is hollow and penetrates through the rubber cylinder from top to bottom, an opening diameter of a lower end of the rubber cylinder and an inner diameter of the rubber ring are both larger than an outer diameter of the limiting ring, and an opening diameter of an upper end of the rubber cylinder is smaller than the outer diameter of the limiting ring and larger than the diameter of the long lock rod.

[0012] Preferably, a water outlet hole penetrating through a lateral wall of the lock body is arranged at a bottom of the short lock hole.

[0013] Preferably, a cross section of the lock key is in an isosceles trapezoidal shape or a circular arc shape, and a cross section of one end of the lock key inserted into the lock bolt is in an isosceles trapezoidal shape or a circular arc shape matched with a lock key bayonet.

[0014] Compared with the prior art, the advantages of this utility model are:

[0015] 1. This utility model effectively reduces the intrusion of rainwater, dust, and other contaminants into the lock body through the gap between the lock beam and the lock body by setting a detachable telescopic seal between the top of the long lock hole and the upper end of the long lock bar. This reduces the risk of rust and blockage of the internal mechanical structure of the lock body and corrosion of the circuit board, thereby extending the service life of the lock, improving the overall reliability and stability of the lock, and reducing maintenance costs and repair frequency. By matching multiple lock keys and lock tongues at equal intervals along the length of the long lock bar, the lock tongue can cooperate with lock keys at different positions when the lock beam faces different sizes of locking objects, thereby adjusting the height of the lock beam. This allows the lock beam to adapt to different sizes of locking objects, thereby improving the versatility and practicality of the lock.

[0016] 2. This utility model features a rubber ring coaxially mounted at the top of the long lock hole, a rubber cylinder mounted at the top of the long lock rod, and a rubber bellows connected between the rubber rings and the rubber cylinder at both ends. This allows the rubber bellows to extend and retract as the long lock rod moves within the long lock hole, effectively adapting to the movement of the long lock rod and maintaining a tight seal between the long lock rod and the long lock hole, preventing the intrusion of rainwater, dust, and other contaminants. By mounting a sealing sleeve at the upper end of the long lock rod, the outer wall of the rubber cylinder contacts the inner wall of the conical cavity of the sealing sleeve, forming a tight seal and further improving the sealing effect of the sealing element. The rubber pad mounted on the inner wall of the conical cavity further enhances the reliability and durability of the sealing element.

[0017] 3. This utility model detachably connects the telescopic seal to the top of the long lock hole and the upper end of the long lock rod, making it convenient for users or maintenance personnel to replace or repair as needed. Through the cooperation of the locking part composed of the locking head and the locking pin with the locking hole, it is ensured that the rubber ring can be stably and firmly connected to the top of the lock body. This not only ensures the stability and sealing performance of the sealing structure, but also improves the ease of installation and disassembly of the telescopic seal. By setting a limiting ring on the long lock beam, the rubber cylinder can be further limited, ensuring the sealing performance between it and the sealing sleeve.

[0018] 4. This utility model has a water outlet hole that penetrates the side wall of the lock body by setting a water outlet hole at the bottom of the short key hole. This can effectively drain water that may enter the lock body, prevent water from accumulating in the lock body and causing corrosion or rust, and further improve the waterproof performance, durability and reliability of the lock. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of a large-scale mechanical smart lock based on the Internet of Things.

[0021] Figure 2 A cross-sectional view of a large-scale mechanical smart lock based on the Internet of Things;

[0022] Figure 3 This is a schematic diagram of the lock beam structure of a large-scale mechanical smart lock based on the Internet of Things.

[0023] Figure 4 A cross-sectional view of a telescopic seal for a large-scale mechanical smart lock based on the Internet of Things;

[0024] Figure 5 This is a schematic diagram of the locking component structure of a large-scale mechanical smart lock based on the Internet of Things.

[0025] Reference numerals: 1-Lock body, 2-Lock beam, 3-Lock tongue, 4-Lock tongue spring, 5-Long lock rod, 6-Long lock hole, 7-Short lock rod, 8-Short lock hole, 9-Lock key, 10-Telescopic seal, 11-Lock beam spring, 12-Rubber ring, 13-Rubber cylinder, 14-Rubber bellows, 15-Sealing sleeve, 16-Conical cavity, 17-Rubber pad, 18-Locking hole, 19-Locking pin, 20-Locking head, 21-Limiting ring, 22-Water outlet. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] In the description of this utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, 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, and therefore should not be construed as a limitation of this utility model.

[0029] Furthermore, the terms "first," "second," and "third" are used only for distinguishing descriptions and should not be interpreted as indicating or implying relative importance.

[0030] Furthermore, the use of terms such as "horizontal," "vertical," and "suspended" does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0031] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and 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.

[0032] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0033] like Figures 1-2 As shown, a large-scale mechanical smart lock based on the Internet of Things includes a lock body 1, a lock beam 2 movably mounted on the lock body 1, a lock tongue 3 slidably mounted inside the lock body 1 and locking in cooperation with the lock beam 2, a lock tongue spring connected to the lock tongue 3, a circuit board, a power module, a communication module, a sensor module, and a mechanical transmission component for driving the lock tongue 3 to slide and release the lock, the upper end of the lock body 1 is provided with a long lock hole 6 for the long lock rod 5 of the lock beam 2 to be inserted, and a short lock hole 8 for the short lock rod 7 of the lock beam 2 to be inserted. The long lock rod 5 is provided with a plurality of lock keys 9 at equal intervals along its length direction, which can be adapted to the lock tongue 3. A telescopic seal 10 is detachably connected between the top of the long lock hole 6 and the upper end of the long lock rod 5. A lock beam spring is provided between the long lock rod 5 and the bottom of the long lock hole 6.

[0034] When locking is required, push the locking beam 2, inserting the long locking rod 5 of the locking beam 2 into the long lock hole 6 of the lock body 1, and the short locking rod 7 into the short lock hole 8. Under the action of the lock tongue spring, the lock tongue 3 will insert into the locking key 9 of the long locking rod 5, thereby preventing the long locking rod 5 of the locking beam 2 from being pulled out of the long lock hole 6, thus achieving locking of the lock. Since multiple locking keys 9 are evenly spaced on the long locking rod 5, the lock tongue 3 can find the corresponding locking key 9 to lock at different insertion depths of the locking beam 2, thus adapting to locking objects of different sizes. When the locking object is small, the insertion depth of the locking beam 2 is large, and the lock tongue 3 will cooperate with the lower locking key 9 of the long locking rod 5, thus locking. When the object is large, the insertion depth of the locking beam 2 is small, and the locking tongue 3 cooperates with the upper locking key 9 of the long locking bar 5. When there is a need to unlock, with the cooperation of the communication module, circuit board and mechanical transmission components, the mechanical transmission components will drive the locking tongue 3 to slide and overcome the elastic force of the locking tongue spring, so that the locking tongue 3 is disengaged from the locking key 9, releasing the lock on the long locking bar 5. The locking beam 2 will spring upward under the action of the rebound force of the locking beam spring, thereby causing the short locking bar 7 to disengage from the short lock hole 8, completing the unlocking of the lock. After the locking tongue 3 is driven out of the locking key 9 by the mechanical transmission components, the locking tongue spring will cause the locking tongue 3 to return to the initial position, preparing for the next locking operation.

[0035] Meanwhile, during the unlocking or locking process of the mechanical smart lock, the telescopic seal 10 will extend and retract with the movement of the long lock rod 5, always maintaining a sealed state between the long lock rod 5 and the long lock hole 6. This can effectively reduce the intrusion of rainwater, dust and other pollutants into the lock body 1 from the gap between the lock beam 2 and the lock body 1 during the use of the lock, reduce the risk of rust and blockage of the internal mechanical structure of the lock body 1 and corrosion of the circuit board, thereby extending the service life of the lock, improving the overall reliability and stability of the lock, and reducing maintenance costs and repair frequency.

[0036] like Figure 4 As shown, the telescopic seal 10 includes: a rubber ring 12 detachably connected to the top of the lock body 1 and whose axis is coaxial with the axis of the long lock hole 6; a rubber cylinder 13 movably sleeved on the upper end of the long lock rod 5; a rubber bellows 14 with its two ends connected to the rubber ring 12 and the rubber cylinder 13 respectively; and a sealing sleeve 15 threaded on the upper end of the long lock rod 5; a conical cavity 16 inside the lower end of the sealing sleeve 15; the outer wall of the rubber cylinder 13 can contact the inner wall of the conical cavity 16; and the inner diameter of the rubber ring 12 is larger than the diameter of the long lock rod 5.

[0037] The working principle of the telescopic seal 10 is as follows: the rubber ring 12 is fixedly connected to the locking member at the top of the lock body 1 through the locking hole 18, while the rubber cylinder 13 is fixed to the upper end of the long lock rod 5 through the sealing sleeve 15. When it is necessary to unlock or lock, the long lock rod 5 will move up and down in the long lock hole 6. Since the rubber ring 12 and the rubber cylinder 13 are fixed in the corresponding positions and the inner diameter of the rubber ring 12 is larger than the diameter of the long lock rod 5, the rubber bellows 14 will expand and contract with the movement of the long lock rod 5. When the long lock rod 5 moves upward, the rubber bellows 14 will extend; when the long lock rod 5 moves downward, the rubber bellows 14 will compress, thereby maintaining the effective sealing of the gap between the long lock rod 5 and the long lock hole 6, preventing the intrusion of pollutants such as rainwater and dust.

[0038] To further enhance the sealing effect, a rubber pad 17 is provided on the inner wall of the conical cavity 16, and an anti-slip texture is provided on the outer wall of the sealing sleeve 15 to tighten or loosen it.

[0039] Among them, such as Figure 3 and Figure 4 As shown, a limiting ring 21 is fixedly sleeved on the upper end of the long locking rod 5. The rubber cylinder 13 is hollow inside and runs vertically through it. The diameter of the lower opening of the rubber cylinder 13 and the inner diameter of the rubber ring 12 are both larger than the outer diameter of the limiting ring 21. The diameter of the upper opening of the rubber cylinder 13 is smaller than the outer diameter of the limiting ring 21 but larger than the diameter of the long locking rod 5. The smaller diameter of the upper opening of the rubber cylinder 13 than the limiting ring 21 can limit the position of the rubber cylinder 13, preventing it from sliding downwards and ensuring a tight contact between the rubber cylinder 13 and the sealing sleeve 15. The larger diameter of the lower opening of the rubber cylinder 13 and the inner diameter of the rubber ring 12 than the outer diameter of the limiting ring 21 allows for easy removal and replacement of the telescopic seal 10.

[0040] Among them, such as Figure 5 As shown, the top of the lock body 1 is provided with a plurality of locking components, and the rubber ring 12 is provided with locking holes 18 corresponding to the locking components. The locking components include: a cylindrical locking pin 19 connected to the top of the lock body 1, and a semi-circular locking head 20 connected to the top of the locking pin 19. The center of the locking head 20 is located on the axis of the locking pin 19. The diameter of the locking head 20 is larger than the diameter of the locking pin 19, the diameter of the locking hole 18 is equal to the diameter of the locking pin 19, and the height of the locking hole 18 is less than or equal to the height of the locking pin 19.

[0041] Align the locking hole 18 of the rubber ring 12 with the locking post 19, and then press the rubber ring 12 down. Due to the elasticity of the rubber ring 12, the locking head 20 can pass through the locking hole 18. Since the diameter of the locking head 20 is larger than the diameter of the locking post 19, the rubber ring 12 is fixed to the top of the lock body 1. Since the height of the locking hole 18 is less than or equal to the height of the locking post 19, the rubber ring 12 can be pressed against the lock body 1, thereby increasing the sealing performance of the rubber gasket 17. When it is necessary to replace the telescopic seal 10, simply lift the rubber ring 12 upward with external force. Due to the elasticity of the rubber ring 12, the locking hole 18 will become larger during the lifting process, thereby causing the locking head 20 to come out of the locking hole 18. This makes the installation and removal of the telescopic seal 10 simple and convenient, and facilitates the replacement or maintenance of the seal.

[0042] like Figure 1 and Figure 2 As shown, the bottom of the short keyhole 8 is provided with a water outlet hole 22 that penetrates the side wall of the lock body 1, which can effectively drain water that may enter the interior of the lock body 1, prevent water from accumulating inside the lock body 1 and causing corrosion or rust, and further improve the waterproof performance, durability and reliability of the lock.

[0043] like Figure 2 As shown, the cross-section of the locking key 9 is an isosceles trapezoid or an arc shape, and the cross-section of the locking tongue 3 inserted into one end of the locking key 9 is an isosceles trapezoid or an arc shape that matches the locking key 9's slot. Setting the cross-sectional shapes of the locking tongue 3 and the locking key 9 to an isosceles trapezoid or an arc shape helps to enhance the stability of the lock and also facilitates the insertion and ejection of the long locking rod 5.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail can be made thereto without departing from the spirit and scope of this utility model as defined in the appended claims.

Claims

1. A large-scale mechanical smart lock based on the Internet of Things, comprising a lock body (1), a lock beam (2) movably disposed on the lock body (1), a lock tongue (3) slidably disposed within the lock body (1) and locking in cooperation with the lock beam (2), a lock tongue spring connected to the lock tongue (3), a circuit board, a power module, a communication module, a sensor module disposed within the lock body (1), and a mechanical transmission component for driving the lock tongue (3) to slide to release the lock, characterized in that: The upper end of the lock body (1) is provided with a long lock hole (6) for inserting the long lock rod (5) of the lock beam (2) and a short lock hole (8) for inserting the short lock rod (7) of the lock beam (2). The long lock rod (5) is provided with a plurality of lock keys (9) that can be adapted to the lock tongue (3) at equal intervals along its length. A telescopic seal (10) is detachably connected between the top of the long lock hole (6) and the upper end of the long lock rod (5). A lock beam spring is provided between the long lock rod (5) and the bottom of the long lock hole (6).

2. The large-scale mechanical smart lock based on the Internet of Things according to claim 1, characterized in that: The telescopic seal (10) includes: a rubber ring (12) detachably connected to the top of the lock body (1) and whose axis is coaxial with the axis of the long lock hole (6); a rubber cylinder (13) movably sleeved on the upper end of the long lock rod (5); a rubber bellows (14) whose two ends are respectively connected to the rubber ring (12) and the rubber cylinder (13); and a sealing sleeve (15) threaded on the upper end of the long lock rod (5); a conical cavity (16) inside the lower end of the sealing sleeve (15); the outer wall of the rubber cylinder (13) can contact the inner wall of the conical cavity (16); and the inner diameter of the rubber ring (12) is larger than the diameter of the long lock rod (5).

3. A large-scale mechanical smart lock based on the Internet of Things according to claim 2, characterized in that: A rubber pad (17) is provided on the inner wall of the conical cavity (16), and an anti-slip texture is provided on the outer wall of the sealing sleeve (15).

4. A large-scale mechanical smart lock based on the Internet of Things according to claim 2, characterized in that: The top of the lock body (1) is provided with a plurality of locking components, and the rubber ring (12) is provided with locking holes (18) corresponding to the locking components. The locking components include: a cylindrical locking pin (19) connected to the top of the lock body (1), and a semi-circular locking head (20) connected to the top of the locking pin (19). The center of the locking head (20) is located on the axis of the locking pin (19).

5. A large-scale mechanical smart lock based on the Internet of Things according to claim 4, characterized in that: The diameter of the locking head (20) is greater than the diameter of the locking pin (19), the diameter of the locking hole (18) is equal to the diameter of the locking pin (19), and the height of the locking hole (18) is less than or equal to the height of the locking pin (19).

6. A large-scale mechanical smart lock based on the Internet of Things according to claim 4, characterized in that: A limiting ring (21) is fixedly sleeved on the upper end of the long locking rod (5). The rubber cylinder (13) is hollow inside and has a through-hole. The opening diameter of the lower end of the rubber cylinder (13) and the inner diameter of the rubber ring (12) are both larger than the outer diameter of the limiting ring (21). The opening diameter of the upper end of the rubber cylinder (13) is smaller than the outer diameter of the limiting ring (21) and larger than the diameter of the long locking rod (5).

7. A large-scale mechanical smart lock based on the Internet of Things according to claim 1, characterized in that: The bottom of the short lock hole (8) is provided with a water outlet (22) that penetrates the side wall of the lock body (1).

8. A large-scale mechanical smart lock based on the Internet of Things according to claim 1, characterized in that: The cross section of the key (9) is an isosceles trapezoid or an arc shape, and the cross section of the latch (3) inserted into one end of the key (9) is an isosceles trapezoid or an arc shape that matches the latch of the key (9).

Citation Information

Patent Citations

  • Intelligent instrumented lock

    CN107461080A

  • Low-power consumption internet of things padlock

    CN222025598U