Mechanical coded lock capable of automatically changing password in unlocking process

Abstract

The invention provides a mechanical coded lock capable of automatically changing the password in the unlocking process, and relates to the technical field of mechanical coded locks, the mechanical coded lock comprises a lock shell and a U-shaped lock column, a partition plate is installed in the lock shell, a control assembly is installed on one side of the partition plate and makes contact with one end of the U-shaped lock column, and two sets of symmetrically-arranged first limiting plates are installed on the other side of the partition plate; two sets of symmetrically-arranged main shafts are installed between the two sets of first limiting plates, the main shafts are driven by a motor, a plurality of sets of adjusting wheels are installed on the main shafts, the U-shaped lock column is connected with the lock shell through a limiting assembly, a plurality of sets of password rings are installed on the U-shaped lock column, and traction assemblies are installed on the first limiting plates. The traction assembly is in contact with the password ring, the inner side of the password ring is connected with the U-shaped lock column through the locking assembly, and the password ring is in sliding connection with the locking assembly; by introducing an automatic password updating mechanism, the defects that a traditional mechanical coded lock cannot automatically change the password and is low in safety and the like are overcome.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical password locks, and particularly to a mechanical password lock that automatically changes the password during the unlocking process. Background Art

[0002] A mechanical password lock is a traditional lock, widely used in places such as door locks, safes, bicycle locks, drawers, etc. that require protecting the safety of items. Its main working principle relies on physical mechanical components, such as password dials, gears, levers, etc. Users input the password by rotating the password dial or operating mechanical parts in a specific order. Once the password is correct, the mechanical device in the lock will automatically unlock.

[0003] Mechanical password locks have a long history, dating back to the 19th century at the earliest. With the development of the industrial revolution, mechanical password locks gradually replaced traditional key locks and became a more secure, convenient, and reusable type of lock. Password locks can form complex passwords by combining numbers or symbols, improving security, and users do not need to carry physical keys, greatly reducing the risk of key loss.

[0004] Although mechanical password locks are widely popular due to their stability and durability, in the context of increasingly high modern security requirements, mechanical password locks also expose some problems that cannot be ignored, such as:

[0005] (1) The password of a traditional mechanical password lock usually needs to be set manually, and once set, the password will be used fixedly unless the user actively adjusts the password. Each time the password is changed, the user needs to manually operate the password dial or password ring, relying on external force and time. If the user forgets the password or needs to change the password, the user must readjust the password, and sometimes it requires cumbersome steps or time;

[0006] (2) In some occasions with high security requirements, frequent password updates are necessary. However, traditional mechanical password locks do not have the function of automatic password replacement, making the passwords used for a long time more likely to be cracked or guessed by brute force. Especially in the case of password leakage or being spied on, traditional locks cannot provide timely password updates, resulting in a decrease in security. Therefore, the present invention proposes a mechanical password lock that automatically changes the password during the unlocking process to solve the problems existing in the prior art. Summary of the Invention

[0007] Aiming at the above problems, the purpose of the present invention is to propose a mechanical password lock that automatically changes the password during the unlocking process. This mechanical password lock that automatically changes the password during the unlocking process has the advantage of automatically changing the password and can solve the problems existing in the prior art.

[0008] To achieve the object of the present invention, the present invention is realized through the following technical solutions: A mechanical password lock that automatically changes the password during the unlocking process, including a lock shell and a U-shaped lock post. A partition is installed inside the lock shell. One side of the partition is installed with a control component, and the control component is in contact with one end of the U-shaped lock post. On the other side of the partition, two sets of symmetrically arranged first limit plates are installed. Between the two sets of first limit plates, two sets of symmetrically arranged main shafts are installed, and the main shafts are driven by a motor. An adjusting wheel is installed on the main shaft, and several groups of adjusting wheels are provided. The U-shaped lock post is connected to the lock shell through a limiting component, and a password ring is installed on the U-shaped lock post. Several groups of password rings are provided. A traction component is installed on the first limit plate, and the traction component is in contact with the password ring. The inner side of the password ring is connected to the U-shaped lock post through a locking component, and the password ring is slidably connected to the locking component.

[0009] Further improvement lies in: The traction component includes a traction plate. An electric push rod is installed on one of the first limit plates. One end of the traction plate passes through this set of first limit plates and is connected to the telescopic end of the electric push rod. The traction plate is provided with a concave opening, and the number of concave openings corresponds to the password rings. A part of the password ring is located inside the concave opening.

[0010] Further improvement lies in: The locking component includes an inner ring. A through opening is provided on the inner side of the inner ring. A convex block is installed on the outer side of the inner ring, and several groups of convex blocks are evenly provided. A bayonet is provided on the inner side of the password ring, and several groups of bayonets are evenly provided. The convex block is located inside the bayonet. A lock block is installed on the U-shaped lock post, and the number and position of the lock blocks correspond to the through openings.

[0011] Further improvement lies in: The control component includes an embedded processor. A fixing plate is installed on one side of the embedded processor. A contact switch is installed on the fixing plate. A contact block is installed on the fixing plate through a first spring telescopic member, and a trigger post is installed on the contact block. The contact block is in contact with the U-shaped lock post.

[0012] Further improvement lies in: The limiting component includes a silica gel protection ring. Two round openings are provided on the lock shell, and a silica gel protection ring is installed on the inner side of the round openings. Both ends of the U-shaped lock post pass through the silica gel protection ring. A limiting opening is provided on the U-shaped lock post. A second limit plate is installed on the inner side of the lock shell, and a part of the second limit plate extends into the limiting opening.

[0013] Further improvement lies in: A resisting block is installed on the inner side of the lock shell through a second spring telescopic member. The resisting block is in contact with the U-shaped lock post, and the upper end of the resisting block is arc-shaped. An arc-shaped groove is provided on the U-shaped lock post.

[0014] Further improvement lies in: Several groups of the inner rings are in contact with each other, and the two outermost inner rings are both in contact with the first limit plate through snap rings.

[0015] A further improvement lies in that: a limiting block is installed on the partition board, and the position of the limiting block corresponds to the position of the traction plate.

[0016] A further improvement lies in that: a battery is installed inside the lock housing.

[0017] The beneficial effects of the present invention are as follows:

[0018] (1) The present invention introduces an automatic password update mechanism. After each unlocking, by adjusting the position of the password ring and then through the main shaft and adjusting wheel driven by the motor, the rotational position of the password ring can be precisely controlled. Therefore, each time the password ring is adjusted, the password will automatically change. Thus, there is no need for the user to manually adjust the password, and the password will be automatically changed after each use, solving the problem that traditional mechanical password locks require manual password changes.

[0019] (2) By automatically updating the password each time, the present invention can effectively prevent the security risks brought about by password leakage, thereby improving security. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a front view structural schematic diagram of the password ring distribution of the present invention.

[0021] Figure 2 is a front view structural schematic diagram of the inner ring distribution of the present invention.

[0022] Figure 3 is an enlarged schematic diagram at A of the present invention.

[0023] Figure 4 is a side view structural schematic diagram of the connection between the password ring and the inner ring of the present invention.

[0024] Figure 5 is a front view schematic diagram of the present invention.

[0025] Figure 6 is a front view schematic diagram of the connection between the password ring and the inner ring of the present invention.

[0026] Wherein: 1, lock housing; 2, U-shaped lock post; 3, partition board; 4, first limiting plate; 5, main shaft; 6, motor; 7, adjusting wheel; 8, password ring; 9, traction plate; 10, electric push rod; 11, concave opening; 12, inner ring; 13, through hole; 14, convex block; 15, bayonet; 16, lock block; 17, embedded processor; 18, fixing plate; 19, contact switch; 20, contact block; 21, trigger post; 22, silica gel protection ring; 23, limiting opening; 24, second limiting plate; 25, second spring telescopic member; 26, abutting block; 27, snap ring; 28, limiting block; 29, battery; 30, adjustment opening. DETAILED DESCRIPTION OF THE INVENTION

[0027] To deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments. These embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0028] Since traditional mechanical password locks cannot automatically change passwords, it means that passwords can become easily cracked or leaked during long-term use. If the password is leaked or guessed by others, the user must manually change the password. This manual change process is prone to inadvertent operations or negligence, which may pose a risk of password exposure. At the same time, if the user does not change the password for a long time or forgets the password, the change process becomes more complicated and may even be inoperable, resulting in the inability to use it normally.

[0029] Therefore, mechanical password locks have been an important choice for security locks in the past few decades. Their simple and reliable design has made them widely used in various scenarios. However, with the improvement of security requirements and the progress of technology, some deficiencies of traditional mechanical password locks have gradually emerged. One of the most significant disadvantages is its inability to automatically update passwords. Each time the password is changed, manual operation is required, which is not only inconvenient but also poses certain security risks.

[0030] Therefore, according to Figures 1 - 6 As shown, this embodiment proposes a mechanical password lock that can automatically change the password during the unlocking process, including a lock shell 1 and a U-shaped lock post 2, which has locking and releasing functions. The U-shaped lock post 2 controls the state (locked or unlocked) of the lock through interaction with other components. A partition 3 is installed inside the lock shell 1. On one side of the partition 3, a control component is installed, and the control component is in contact with one end of the U-shaped lock post 2. The control component includes an embedded processor 17. On one side of the embedded processor 17, a fixing plate 18 is installed. A contact switch 19 is installed on the fixing plate 18. A contact block 20 is installed on the fixing plate 18 through a first spring telescopic member, and a trigger post 21 is installed on the contact block 20. The contact block 20 is in contact with the U-shaped lock post 2, and two groups of the first spring telescopic members are symmetrically arranged. As Figure 1 As shown, when the U-shaped lock post 2 is in the locked state, the trigger post 21 is in contact with the contact switch 19. Further, the contact switch 19 is electrically connected to the embedded processor 17. During operation, after this mechanical password lock is opened, the trigger post 21 disengages from the contact switch 19. Since in the locked state, the trigger post 21 remains in contact with the contact switch 19 to form a closed circuit, then after its disengagement, the circuit is disconnected. At this time, the contact switch 19 sends an electrical signal to the embedded processor 17, so that the embedded processor 17 triggers subsequent steps to perform automatic password change. Further, when the U-shaped lock post 2 is in the open state, under the action of the first spring telescopic member, the contact block 20 contacts the lock shell 1, and then blocks the corresponding round opening, thereby preventing external dust from entering. The shape of the inner cavity of the contact block 20 is adapted to the end of the U-shaped lock post 2.

[0031] On the other side of the partition plate 3, two sets of symmetrically arranged first limit plates 4 are installed. An opening for the U-shaped lock post 2 to pass through is provided on the first limit plate 4. Between the two sets of first limit plates 4, two sets of symmetrically arranged main shafts 5 are installed, and the main shaft 5 is driven by a motor 6. The motor 6 is located on one side of one set of first limit plates 4 (the upper first limit plate 4) and is fixedly connected to it through a bracket. An adjusting wheel 7 is installed on the main shaft 5, and a number of groups of adjusting wheels 7 are provided. A password ring 8 is installed on the U-shaped lock post 2, and each password ring 8 has a number of groups of numbers or symbols (such as 0-9). These password rings are used to set passwords, and the passwords are changed by rotating the password rings. A number of groups of password rings 8 are provided. In this embodiment, four groups of password rings 8 are evenly provided. Correspondingly, four groups of adjusting wheels 7 are also provided, and their positions correspond to the password rings 8 respectively. Normally, the adjusting wheel 7 does not contact the password ring 8. Each time the password is automatically changed, the password ring 8 moves its position under the action of the traction assembly, so as to contact the adjusting wheel 7. At this time, under the rotation of the adjusting wheel 7, the password ring 8 is driven to rotate. Then, after rotating a certain angle (this angle is the preset angle rotation), the traction assembly pushes it back to its original position, ensuring that the password ring 8 is fixed at the new password position. This process ensures that each time the password is updated, the password ring 8 is accurately restored to a fixed working position. At this time, the password has been modified. Further, the motor 6 is electrically connected to the embedded processor 17. Then, in this process, since there are two main shafts 5 and the main shafts 5 are controlled by independent motors, the rotation directions between the two sets of main shafts 5 are inconsistent. For example, in this embodiment, the left main shaft 5 rotates clockwise and the right main shaft 5 rotates counterclockwise. On the main shaft 5, the installation positions of the adjusting wheels 7 are also different, and the password rings 8 they control are also different. Then, under this condition, different settings can be made for the rotation directions and rotation angles of the four groups of password rings 8 (where the positions of the adjusting wheels 7 need to be installed and set in advance, and the rotation directions and angles can be set programmatically through the embedded processor 17). Therefore, this rotation in different directions ensures the complexity and unpredictability of password changes and enhances the security.

[0032] An adjustment opening 30 is provided on the lock case 1, and the number and position of the adjustment opening 30 correspond to the password ring 8.

[0033] A traction component is installed on the first limiting plate 4, and the traction component is in contact with the password ring 8. The traction component includes a traction plate 9. An electric push rod 10 is installed on a group of first limiting plates 4 (the upper first limiting plate 4). One end of the traction plate 9 passes through this group of first limiting plates 4 and is connected to the telescopic end of the electric push rod 10. A concave opening 11 is provided on the traction plate 9, and the number of concave openings 11 corresponds to that of the password rings 8. A part of the password ring 8 is located within the concave opening 11. The design of the concave opening 11 can limit the position of the password ring 8 and at the same time ensure that the traction plate 9 can accurately contact the password ring 8. During operation, the traction plate 9 moves in the vertical direction. Then, under the action of the electric push rod 10, the traction plate 9 can be driven to move, thereby pushing the password ring 8 to displace. Correspondingly, a limiting block 28 is installed on the partition plate 3, and the position of the limiting block 28 corresponds to that of the traction plate 9. Then, when one end of the traction plate 9 contacts the limiting block 28, it means that the password ring 8 has moved to the predetermined position. Correspondingly, the electric push rod 10 is electrically connected to the embedded processor 17. The embedded processor 17 precisely controls the movement of the traction plate 9 by controlling the action of the electric push rod 10, thereby realizing the change of the password.

[0034] When this mechanical password lock is unlocked and the unlocking operation is completed, the embedded processor 17 starts the electric push rod 10 according to the received signal. The electric push rod 10 drives the traction plate 9 to move vertically, and then pushes the password ring 8 to adjust its position, and then makes it contact with the adjusting wheel 7 for angle adjustment. After the adjustment, the traction plate 9 returns to its original position. At this time, the password ring 8 has completed the adjustment and the password change process ends.

[0035] The inner side of the password ring 8 is connected to the U-shaped lock column 2 through the locking assembly, and the password ring 8 is slidably connected to the locking assembly. The locking assembly includes an inner ring 12, the inner side of the inner ring 12 is provided with a through hole 13, the outer side of the inner ring 12 is installed with a protrusion 14, and the protrusion 14 is evenly arranged in several groups, the inner side of the password ring 8 is provided with a bayonet 15, the bayonet 15 is evenly arranged in several groups, the protrusion 14 is located in the bayonet 15, and the U-shaped lock column 2 is installed with a locking block 16, and the number and position of the locking block 16 correspond to the through hole 13. Several groups of inner rings 12 are in contact with each other, and the two outermost groups of inner rings 12 are in contact with the first limit plate 4 through the snap ring 27. In this embodiment, the inner ring 12 is sleeved on the U-shaped lock cylinder 2, but due to the mutual contact and the restriction of the snap ring 27, the position of the inner ring 12 will not move with the movement of the U-shaped lock cylinder 2. Correspondingly, when the protrusion 14 is located in the bayonet 15, the rotation of the password ring 8 will drive the inner ring 12 to rotate, thereby, the position of the through hole 13 changes, and it cannot correspond to the position of the lock block 16. At this time, the U-shaped lock cylinder 2 is in a locked state. When the password ring 8 rotates to the correct password, the position of the through hole 13 corresponds to the position of the lock block 16, and the U-shaped lock cylinder 2 can be opened. In the process of modifying the password, after the position of the password ring 8 changes, the protrusion 14 is separated from the bayonet 15. At this time, the password ring 8 is still located outside the inner ring 12, so the width of the inner ring 12 is greater than the width of the password ring 8. When the password ring 8 drives the inner ring 12 to rotate, the locking block 16 is separated from the through-port 13. Therefore, after the mechanical password lock is opened, the password is changed and the locking block 16 is located in the through-port 13. After the mechanical password lock is closed, the locking block 16 is separated from the through-port 13, and the user can directly turn the password ring 8 to shuffle the password.

[0036] The U-shaped lock column 2 is connected to the lock housing 1 through a limiting assembly, and the limiting assembly includes a silicone protective ring 22. The silicone protective ring 22 has good elasticity and can effectively reduce the friction between the U-shaped lock column 2 and the lock housing 1 during movement, thereby reducing wear and extending the service life of the components. At the same time, the softness of the silicone can also play a certain dust-proof role, preventing external dust or debris from entering the interior of the lock. The lock housing 1 is provided with two groups of round openings, and the inner side of the round opening is equipped with a silicone protective ring 22. Both ends of the U-shaped lock column 2 pass through the silicone protective ring 22. The U-shaped lock column 2 is provided with a limiting opening 23. The inner side of the lock housing 1 is equipped with a second limiting plate 24, and part of the second limiting plate 24 extends into the limiting opening 23. Through the cooperation of the second limiting plate 24 and the limiting opening 23, the movement of the U-shaped lock column 2 is further limited, ensuring that the U-shaped lock column 2 can only move within a set range, preventing the performance of the lock from being affected or causing damage due to excessive movement.

[0037] An abutting block 26 is installed on the inner side of the lock housing 1 through a second spring telescopic member 25. The abutting block 26 contacts the U-shaped lock post 2, and the upper end of the abutting block 26 is arc-shaped. An arc-shaped groove is provided on the U-shaped lock post 2. When the U-shaped lock post 2 is in the locked or working state, the abutting block 26 contacts the U-shaped lock post 2 through the second spring telescopic member 25 and always maintains a certain pressure to ensure that the U-shaped lock post 2 can be stably in a predetermined position.

[0038] A battery 29 is installed on the inner side of the lock housing 1. The battery 29 provides power for the electronic part of the entire mechanical password lock. In this embodiment, the battery 29 is a rechargeable battery. A charging port is installed on the lock housing 1, and the charging port is electrically connected to the battery 29.

[0039] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the framework and scope of application of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A mechanical password lock that automatically changes the password during the unlocking process, comprising a lock case (1) and a U-shaped lock post (2), characterized in that: A partition plate (3) is installed inside the lock housing (1). A control component is installed on one side of the partition plate (3), and the control component is in contact with one end of the U-shaped lock post (2). On the other side of the partition plate (3), two symmetrically arranged first limiting plates (4) are installed. Between the two first limiting plates (4), two symmetrically arranged main shafts (5) are installed, and the main shafts (5) are driven by a motor (6). An adjusting wheel (7) is installed on the main shaft (5), and several groups of adjusting wheels (7) are provided. The U-shaped lock post (2) is connected to the lock housing (1) through a limiting component, and a password ring (8) is installed on the U-shaped lock post (2). Several groups of password rings (8) are provided. A traction component is installed on the first limiting plate (4), and the traction component is in contact with the password ring (8). The inner side of the password ring (8) is connected to the U-shaped lock post (2) through a locking component, and the password ring (8) is slidably connected to the locking component.

2. The mechanical password lock capable of automatically changing the password during unlocking according to claim 1, wherein: The traction component includes a traction plate (9). An electric push rod (10) is installed on one of the first limiting plates (4). One end of the traction plate (9) passes through this group of first limiting plates (4) and is connected to the telescopic end of the electric push rod (10). A concave opening (11) is provided on the traction plate (9), and the number of concave openings (11) corresponds to that of the password rings (8). A part of the password ring (8) is located in the concave opening (11).

3. The mechanical password lock capable of automatically changing the password during unlocking according to claim 1, wherein: The locking component includes an inner ring (12). A through opening (13) is provided on the inner side of the inner ring (12). A convex block (14) is installed on the outer side of the inner ring (12), and several groups of convex blocks (14) are evenly provided. A bayonet (15) is provided on the inner side of the password ring (8), and several groups of bayonets (15) are evenly provided. The convex block (14) is located in the bayonet (15). A lock block (16) is installed on the U-shaped lock post (2), and the number and position of the lock blocks (16) correspond to those of the through openings (13).

4. A mechanical combination lock that automatically changes the password during the unlocking process according to claim 1, characterized in that: The control component includes an embedded processor (17). A fixing plate (18) is installed on one side of the embedded processor (17). A contact switch (19) is installed on the fixing plate (18). A contact block (20) is installed on the fixing plate (18) through a first spring telescopic member, and a trigger post (21) is installed on the contact block (20). The contact block (20) is in contact with the U-shaped lock post (2).

5. The mechanical password lock capable of automatically changing password during unlocking according to claim 1, characterized in that: The limiting component includes a silica gel protection ring (22). Two circular openings are provided on the lock housing (1), and the silica gel protection ring (22) is installed on the inner side of the circular openings. Both ends of the U-shaped lock post (2) pass through the silica gel protection ring (22). A limiting opening (23) is provided on the U-shaped lock post (2). A second limiting plate (24) is installed on the inner side of the lock housing (1), and a part of the second limiting plate (24) extends into the limiting opening (23).

6. The mechanical password lock capable of automatically changing password during unlocking according to claim 1, wherein: A resisting block (26) is installed on the inner side of the lock housing (1) through a second spring telescopic member (25). The resisting block (26) is in contact with the U-shaped lock post (2), and the upper end of the resisting block (26) is arc-shaped. An arc-shaped groove is provided on the U-shaped lock post (2).

7. The mechanical password lock capable of automatically changing the password during unlocking according to claim 3, wherein: Several groups of the inner rings (12) are in contact with each other, and the two outermost groups of inner rings (12) are both in contact with the first limiting plate (4) through snap rings (27).

8. A mechanical combination lock that automatically changes the password during the unlocking process according to claim 2, characterized in that: A limiting block (28) is installed on the partition plate (3), and the position of the limiting block (28) corresponds to the position of the traction plate (9).

9. The mechanical password lock capable of automatically changing password during unlocking according to claim 1, characterized in that: A battery (29) is installed inside the lock housing (1).

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