Coded lock with reliable code searching function

Abstract

The utility model discloses a coded lock with a reliable code searching function. The coded lock comprises a shell, the mechanical lock cylinder assembly is assembled on the shell; the coded lock assembly is used for locking the mechanical lock cylinder assembly, and the coded lock assembly comprises one or more groups of code wheel mechanisms; an integrated movable code searching plate is arranged in the shell, the movable code searching plate at least has a code searching position state and a non-working position state, and the movable code searching plate can be switched between the code searching position state and the non-working position state under the action of external force. According to the utility model, the integrated movable code searching plate is adopted, so that the movable code searching plate can move to switch position states, and can form different relations with the code wheel mechanism before and after the position states are changed, thereby realizing a code searching function. The structure integration level is high, the matching error among multiple parts is eliminated, the possible jamming condition is eliminated, the operation and use of the code searching plate are more stable, and the reliability of the code searching function is better.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical password locks, in particular to a password lock with a reliable code-finding function. Background Art

[0002] A combination lock is a type of lock that uses a series of numbers or symbols to open. Combination locks can be divided into: mechanical combination locks, digital combination locks, and so on.

[0003] Combining the convenience of electronic combination locks with the reliability of key-operated mechanical locks, the wheel-operated mechanical combination lock has a wide range of applications. Its unique operation involves turning a wheel to a pre-set number to enter a combination. This process is repeated by turning the wheel until the final digit is entered to unlock the lock. Existing combination locks rely on a pre-set numeric combination, but if the combination is forgotten, the lock cannot be unlocked and requires external force to open. This can cause the lock to become unusable and require a replacement, which is costly, labor-intensive, and time-consuming.

[0004] Prior art example 1, referring to patent document CN211949973U, discloses a password lock with a code-finding function, including a lock seat and a cover shell, a horizontal core rod and a vertical lock core are arranged in the lock seat, the core rod includes a connecting section, a front end and a tail end, a number of character wheel cores are sequentially sleeved on the connecting section, a character wheel is clamped on the character wheel core, and a code-finding block is arranged on the outer wall of the character wheel core; a lock tongue is connected to the bottom of the lock core and can drive the lock tongue to move horizontally when rotated; a movable plate is provided at the bottom of the lock seat below the core rod, the lock tongue is against the movable plate, and a code-finding piece is provided above the movable plate, which drives the code-finding piece to move upward when the movable plate moves; the code-finding piece is provided with character wheel slots matching the number of character wheels for the character wheels to pass through, and a code-finding groove whose size matches the code-finding block is provided on the side of the character wheel slot. After use, the structure of Example 1 exposed a major reliability defect, specifically: during the code-finding process, the lock tongue moves horizontally against the movable plate, and the movable plate then drives the code-finding piece to move upward, so that the code-finding piece and the character wheel form a match. Prior art Example 2, referring to patent document CN107780712B, provides a combination lock capable of retrieving a password, comprising a password assembly and a lock core, wherein the password assembly comprises a code adjustment wheel and a password wheel, wherein the password wheel and the matching code adjustment wheel cooperate with each other and can rotate synchronously, and the combination lock is provided with a plurality of code-finding pieces, and when the password wheels are in a disordered state, rotating the lock core can store elastic potential energy for the code-finding piece, and after the elastic potential energy is stored in the code-finding piece, when a certain password wheel is turned until the password is correct, the code-finding piece slides to jam the code adjustment wheel matching the password wheel to restrict the rotation of the password wheel.

[0005] The two technical examples have the same defect, that is, during the code-seeking process, the two separate components interact with each other to convert horizontal movement into vertical movement, and there are many unstable factors. First, it is easy to cause the code-seeking piece to move out of place, and then it does not cooperate smoothly with the character wheel, and the correct password cannot be found smoothly; second, the code-seeking piece is a relatively thin piece with a certain elasticity, which is prone to fatigue (permanent deformation), and then it does not cooperate smoothly with the moving plate and the character wheel, and the correct password cannot be found smoothly. Summary of the Invention

[0006] In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a combination lock with a reliable code-finding function.

[0007] The technical solution of the utility model to solve the technical problem is: a password lock with a reliable code-finding function, comprising:

[0008] case;

[0009] A mechanical lock core assembly, which is assembled on the housing and is used to achieve a locking function;

[0010] A combination lock assembly is assembled on the housing, and is used to lock the mechanical lock core assembly. The combination lock assembly includes one or more combination wheel mechanisms;

[0011] The housing is provided with an integrated movable code-finding plate, which has at least a code-finding position state and a non-working position state. Under the action of an external force, the movable code-finding plate can switch between the code-finding position state and the non-working position state;

[0012] When the movable code-finding plate is close to the code wheel mechanism, the movable code-finding plate switches to the code-finding position state, and the code lock component and the movable code-finding plate cooperate with each other to realize the code-finding function;

[0013] When the movable code-finding plate is away from the code wheel mechanism, the movable code-finding plate switches to the non-working position, the combination lock assembly and the movable code-finding plate are staggered, and the code wheel mechanism can rotate freely relative to the movable code-finding plate.

[0014] A preferred solution for the movable code-finding plate is as follows: the movable code-finding plate comprises a base frame, and a plurality of code-finding brackets protruding from the base frame and corresponding to the cipher wheel mechanism; wherein the code-finding brackets are provided with code-finding slots, and the cipher wheel mechanism is provided with code-finding blocks;

[0015] When the movable code-seeking plate is close to the code wheel mechanism, the code wheel mechanism is turned so that the code-seeking block is inserted into the code-seeking slot and forms an interference fit. At this time, the code wheel mechanism is in the correct code position.

[0016] When the movable code-seeking plate is away from the code wheel mechanism, the code-seeking block and the code-seeking slot are offset from each other, thereby shifting the code wheel mechanism so that the code wheel mechanism can rotate freely.

[0017] Optionally, the movable code-seeking plate is abutted against a reset spring, and the reset spring enables the movable code-seeking plate to always have a movement tendency away from the cipher wheel mechanism;

[0018] The mechanical lock core assembly can abut against the movable code-finding plate and apply a thrust to the movable code-finding plate, and the thrust overcomes the elastic force of the reset spring to drive the movable code-finding plate close to the password wheel mechanism.

[0019] Furthermore, one end of the movable code-finding plate protrudes toward one side of the mechanical lock core assembly to form a contact end portion, and the other end protrudes away from the side of the mechanical lock core assembly to form a support end portion;

[0020] The mechanical lock core assembly can abut against the contact end, and the mechanical lock core assembly generates a force with the base frame through the contact end;

[0021] One end of the return spring is sleeved on the support end portion, and the other end abuts against the housing.

[0022] More specifically, the code-finding bracket has at least two convex ribs, and the code-finding groove is formed between the two convex ribs.

[0023] Optionally, the rib has an inclined side wall on a side facing away from the code-finding slot, and the code wheel mechanism is toggled so that the code-finding block can move from outside the code-finding slot into the code-finding slot along the inclined side wall;

[0024] The side of the rib facing the code-seeking slot has a straight side wall. When the code-seeking block is located in the code-seeking slot, the code-seeking block forms an interference fit with the straight side wall. At this time, the code wheel mechanism cannot be rotated by turning the code wheel mechanism.

[0025] Optionally, the height of one rib is smaller than the height of the other rib.

[0026] In some preferred embodiments of the present invention, the mechanical lock core assembly includes a driving member and a key lock core, the driving member is provided with a transmission hole, the key lock core is provided with an eccentric swinging member, and the eccentric swinging member is inserted into the transmission hole;

[0027] Under the action of the eccentric swinging member, the driving member can extend forward or retract backward;

[0028] When the driving member extends forward, the driving member drives the movable code-finding plate to approach the password wheel mechanism;

[0029] When the driving member retracts backward, the movable code-seeking plate moves away from the password wheel mechanism.

[0030] Optionally, the side of the base frame has a mounting buckle, the housing is provided with a slot, the mounting buckle is snapped into the slot, and the size of the slot is larger than the size of the mounting buckle to form a movable gap;

[0031] The base frame is provided with one or more limit blocks protruding upwards, and a stop block is provided in the shell. When the movable code-finding plate moves, the limit block can abut against the stop block and form a unidirectional limit stop fit.

[0032] In the present invention, the cipher wheel mechanism comprises at least a cipher wheel body and a character wheel core. The character wheel core can rotate together with the cipher wheel body. The cipher wheel body is at least partially exposed outside the housing. The character wheel core is located inside the housing, and the code-seeking block is formed on the character wheel core.

[0033] The beneficial effects of the present invention are:

[0034] First, it adopts an integrated movable code-finding plate, which can be moved to switch the position state, and second, it can form different relationships with the password wheel mechanism before and after the position state changes, thereby realizing the code-finding function.

[0035] Second, because the movable code-finding plate is an integrated structure with high structural integration, the matching errors between multiple parts are eliminated, and possible jams are eliminated. The operation and use of the code-finding plate are more stable, and the reliability of the code-finding function is better.

[0036] 3. The movable code-finding plate is preferably made of elastic memory material (such as zinc-aluminum alloy, nickel-titanium alloy, memory plastic, etc.), which has better deformation and recovery performance, and the durability of components is better, so that the product still has excellent performance after long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0038] Figure 2 It is a structural explosion diagram of the utility model.

[0039] Figure 3 It is a schematic diagram of the mechanism of an integrated movable code-finding plate.

[0040] Figure 4 This is a schematic diagram of the coordination between the cipher wheel body and the character wheel core.

[0041] Figure 5 It is a schematic diagram of the local structure in the code-seeking position state and a partial enlarged schematic diagram.

[0042] Figure 6It is a schematic diagram of the local structure in the non-working position and its partial enlarged schematic diagram.

[0043] Figure 7 It is a schematic diagram of the code wheel mechanism and the movable code-seeking plate in the code-seeking position state.

[0044] Figure 8 It is a schematic diagram of the code wheel mechanism and the movable code-finding plate in the non-working position.

[0045] Figure 9 It is a schematic diagram of the cooperation between a movable code-finding plate having ribs of different heights and a code-finding block.

[0046] Figure 10 This is a diagram showing the coordination between the installation clip and the slot.

[0047] Figure 11 It is a schematic diagram of the local structure of the limit block and the stop block.

[0048] In the figure: 1. Shell; 11. Card slot; 111. Movable gap; 12. Stop block; 2. Mechanical lock core assembly; 21. Driving member; 211. Transmission hole; 22. Key lock core; 221. Eccentric swing member; 23. Switch member; 24. Lock core sleeve; 3. Combination lock assembly; 31. Combination wheel mechanism; 311. Combination wheel body; 312. Character wheel core; 3121. Code search block; 4. Movable code search plate; 4a. Code search position state; 4b. Non-working position state; 41. Base frame; 411. Contact end; 412. Support end; 413. Mounting buckle; 414. Limit block; 42. Code search bracket; 421. Raised rib; 4211. Inclined side wall; 4212. Straight side wall; 43. Code search slot; 5. Return spring. DETAILED DESCRIPTION

[0049] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments are merely a specific description of the present invention, and their purpose is to allow those skilled in the art to better understand the technical solution of the present invention, and should not be regarded as limiting the present invention.

[0050] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", and "outside" are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0051] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0052] Example 1

[0053] Reference Figures 1 to 8 A combination lock with a reliable code-finding function includes: a housing 1; a mechanical lock core assembly 2, which is assembled on the housing 1 and is used to realize a locking function; a combination lock assembly 3, which is assembled on the housing 1, and the combination lock assembly 3 is used to lock the mechanical lock core assembly 2, and the combination lock assembly 3 includes one or more combinations of wheel mechanisms 31.

[0054] It should be noted that the shell 1 has an integrated movable code-finding plate 4, and the movable code-finding plate 4 has at least a code-finding position state 4a and a non-working position state 4b. Under the action of external force, the movable code-finding plate 4 can switch between the code-finding position state 4a and the non-working position state 4b.

[0055] The operating actions of the movable code-seeking plate 4 and the corresponding relationship between each component are as follows: when the movable code-seeking plate 4 is close to the password wheel mechanism 31, the movable code-seeking plate 4 switches to the code-seeking position state 4a, and the password lock assembly 3 and the movable code-seeking plate 4 cooperate with each other and realize the code-seeking function; when the movable code-seeking plate 4 is away from the password wheel mechanism 31, the movable code-seeking plate 4 switches to the non-working position state 4b, and the password lock assembly 3 and the movable code-seeking plate 4 are staggered with each other, and the password wheel mechanism 31 can rotate freely relative to the movable code-seeking plate 4, and the code-seeking function cannot be realized at this time.

[0056] In the present invention, an integrated movable code-finding plate 4 is adopted. First, it can be moved to switch the position state. Second, it can form different relationships with the password wheel mechanism 31 before and after the position state changes, thereby realizing the code-finding function. Since the movable code-finding plate 4 is an integrated structure, it is preferably made of an elastic memory material (such as zinc-aluminum alloy, nickel-titanium alloy, memory plastic, etc.), so that the movable code-finding plate 4 has a certain elastic deformation ability. When it is subjected to force (such as when it is acted upon by the password wheel mechanism 31), it can change its shape and return to a pre-set shape when the force is eliminated. Specifically, when the password lock assembly 3 and the movable code-finding plate 4 cooperate with each other, the password lock assembly 3 applies a force to the movable code-finding plate 4; when the password lock assembly 3 and the movable code-finding plate 4 are staggered with each other, the password lock assembly 3 eliminates the force applied to the movable code-finding plate 4.

[0057] The preferred solution for the integrated movable code-finding plate 4 is: Figure 3 The movable code-finding plate 4 includes a base frame 41 and a plurality of code-finding brackets 42 protruding from the base frame 41 and corresponding to the code wheel mechanism 31. The code-finding brackets 42 are provided with code-finding slots 43, and the code wheel mechanism 31 has a code-finding block 3121. The combination of the code-finding block 3121 and the code-finding slots 43 enables the combination lock assembly 3 and the movable code-finding plate 4 to form a mating relationship. The specific working principle is as follows:

[0058] Reference Figure 5 、 Figure 7 When the movable code-finding plate 4 approaches the code wheel mechanism 31, the code-finding block 3121 is engaged with the code-finding slot 43 by turning the code wheel mechanism 31, forming an interference fit. At this point, the code wheel mechanism 31 is in the correct code position. Specifically, before engagement, a force is applied to deform the movable code-finding plate 4, allowing the code-finding block 3121 to smoothly enter the code-finding slot 43. During this process, the feel of turning the code wheel mechanism 31 changes noticeably, allowing the user to intuitively detect and confirm that they have found the correct code.

[0059] Reference Figure 6 、 Figure 8 When the movable code-seeking plate 4 is away from the code wheel mechanism 31, the code-seeking block 3121 is offset from the code-seeking slot 43, thereby moving the code wheel mechanism 31 so that the code wheel mechanism 31 rotates freely, making it impossible to search for the correct code, and at the same time, it will not interfere with the operation of the code wheel mechanism 31.

[0060] Reference Figure 4 Preferably, the cipher wheel mechanism 31 includes at least a cipher wheel body 311 and a character wheel core 312. The character wheel core 312 can rotate together with the cipher wheel body 311. The cipher wheel body 311 is at least partially exposed outside the shell 1. The character wheel core 312 is located inside the shell 1, and the code-seeking block 3121 is formed on the character wheel core 312.

[0061] Example 2

[0062] Reference Figures 1 to 8 Based on the structure of the first embodiment, in order to realize the position state switching of the movable code-finding plate 4, it needs to receive an external force. This embodiment provides two preferred solutions, as follows:

[0063] 1. The mechanical lock core assembly 2 acts directly or indirectly on the movable code-finding plate 4, so that the movable code-finding plate 4 switches from the non-working position state 4b to the code-finding position state 4a; similarly, the mechanical lock core assembly 2 acts directly or indirectly on the movable code-finding plate 4, so that the movable code-finding plate 4 switches from the code-finding position state 4a to the non-working position state 4b.

[0064] The preferred structural solution is as follows: the mechanical lock core assembly 2 includes a driving member 21 and a key lock core 22, the driving member 21 is provided with a transmission hole 211, the key lock core 22 is provided with an eccentric swinging member 221, and the eccentric swinging member 221 is inserted into the transmission hole 211;

[0065] Under the action of the eccentric swinging member 221, the driving member 21 can extend forward or retract backward;

[0066] When the driving member 21 extends forward, the driving member 21 drives the movable code-finding plate 4 to approach the password wheel mechanism 31;

[0067] When the driving member 21 retracts backward, the driving member 21 drives the movable code-seeking plate away from the password wheel mechanism 31 .

[0068] Preferably, refer to Figure 2 The mechanical lock cylinder assembly 2 also includes a switch member 23 and a lock cylinder housing 24. The key lock cylinder 22 is located in the lock cylinder housing 24. A user operates the switch member 23 to change the lock cylinder housing 24, enabling unlocking and locking. When code retrieval is required, the key lock cylinder 22 is actuated by the key, enabling code retrieval via the movable code retrieval plate 4. Therefore, code retrieval is only possible with the key, enhancing the lock's security.

[0069] 2. The mechanical lock core assembly 2 directly or indirectly acts on the movable code-finding plate 4 to switch the movable code-finding plate 4 from the non-working position state 4b to the code-finding position state 4a; the difference is that when the force of the mechanical lock core assembly 2 is removed, the movable code-finding plate 4 is switched from the code-finding position state 4a to the non-working position state 4b by relying on the elastic force.

[0070] The preferred structural solution is: Figure 2The mechanical lock core assembly 2 includes a driving member 21 and a key lock core 22. A transmission hole 211 is provided in the driving member 21, and an eccentric swinging member 221 is provided on the key lock core 22. The eccentric swinging member 221 is inserted into the transmission hole 211. The movable code-finding plate 4 is abutted against a reset spring 5. The reset spring 5 makes the movable code-finding plate 4 always have a tendency to move away from the password wheel mechanism 31. Under the action of the eccentric swinging member 221, the driving member 21 can extend forward or retract backward. When the driving member 21 extends forward, the mechanical lock core assembly 2 can abut against the movable code-finding plate 4 through the driving member 21 and apply a thrust to the movable code-finding plate 4. After the thrust overcomes the elastic force of the reset spring 5, the movable code-finding plate 4 is driven close to the password wheel mechanism 31. In addition, when the driving member 21 retracts backward, the force applied to the movable code-finding plate 4 is released, and under the action of the return spring 5, the movable code-finding plate 4 is switched from the code-finding position state 4a to the non-working position state 4b.

[0071] In order to make the cooperation and action of the movable code-finding plate 4 and related components more stable and reliable, the preferred structure adopted is: Figure 3 One end of the movable code-finding plate 4 protrudes toward the side of the mechanical lock core assembly 2 to form a contact end 411, and the other end protrudes away from the side of the mechanical lock core assembly 2 to form a support end 412; wherein, the mechanical lock core assembly 2 can abut against the contact end 411 (through the driving member 21), and the mechanical lock core assembly 2 generates a force with the base frame 41 through the contact end 411; one end of the reset spring 5 is sleeved on the support end 412, and the other end abuts against the shell 1.

[0072] More specifically, refer to Figures 7 and 8 The code search bracket 42 has at least two ribs 421, and the code search slot 43 is formed between the two ribs 421. The code search slot 43 preferably adopts a through-type structure to reduce the connection structure between the two ribs 421, thereby making it easier for the code search block 3121 to deform the ribs 421 and then snap into the code search slot 43.

[0073] To ensure that the code block 3121 can stably enter the code slot 43, a preferred method is adopted in which the rib 421 has an inclined sidewall 4211 on the side facing away from the code slot 43, and a straight sidewall 4212 on the side facing the code slot 43. The specific operating principle is as follows: the code wheel mechanism 31 is moved to allow the code block 3121 to enter the code slot 43 from outside along the inclined sidewall 4211, smoothly switching from the non-operating position 4b to the code position 4a. When the code block 3121 is in the code slot 43, it forms an interference fit with the straight sidewall 4212. At this time, moving the code wheel mechanism 31 cannot rotate it. Only when the movable code plate 4 is reset (switched to the non-operating position 4b) does the code block 3121 disengage from the code slot 43, allowing the code wheel mechanism 31 to rotate freely.

[0074] Preferably, refer to Figure 9 One rib 421 is smaller than the other, allowing the code-seeking block 3121 to more easily enter the code-seeking slot 43 along the lower rib 421. This reduces the difficulty of code-seeking by the user and prevents jamming. In another application example, when one rib 421 is sufficiently high, it completely blocks the code-seeking block 3121. This means that the code-seeking block 3121 cannot pass through the higher rib 421 and can only enter and exit the code-seeking slot 43 via the lower rib 421. Consequently, the code-seeking block 3121 can only enter the code-seeking slot 43 and perform the code-seeking function when the code wheel mechanism 31 rotates in the correct direction. If the code wheel mechanism 31 rotates in the incorrect direction, the code-seeking block 3121 cannot enter the code-seeking slot 43, thus failing to perform the code-seeking function.

[0075] Optionally, refer to Figure 10 The side of the base frame 41 has a mounting clip 413, and the housing 1 has a slot 11, and the mounting clip 413 is snapped into the slot 11 to achieve the assembly relationship between the two. In addition, the size of the slot 11 is larger than the size of the mounting clip 413 to form a movable gap 111, which is used to meet the activity requirements of the movable code search plate 4; on the other hand, referring to Figure 11 The base frame 41 is provided with one or more limit blocks 414 protruding upward, and the shell 1 is provided with a stop block 12. During the movement of the movable code-finding plate 4, the limit block 414 can abut against the stop block 12 and form a unidirectional limit stop, thereby limiting the displacement of the movable code-finding plate 4 and preventing excessive movement.

[0076] It is worth noting that other technical solutions of the present invention belong to the existing technology and are therefore not described in detail.

[0077] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the concept of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A combination lock with a reliable code-finding function, comprising: Housing (1); A mechanical lock core assembly (2), which is assembled on the housing (1) and is used to achieve a locking function; A combination lock assembly (3) is assembled on the housing (1), the combination lock assembly (3) is used to lock the mechanical lock core assembly (2), and the combination lock assembly (3) includes one or more combinations of combination wheel mechanisms (31); Its characteristics are: The housing (1) has an integrated movable code-finding plate (4), the movable code-finding plate (4) having at least a code-finding position state (4a) and a non-operating position state (4b), and the movable code-finding plate (4) can switch between the code-finding position state (4a) and the non-operating position state (4b) under the action of an external force; When the movable code-finding plate (4) is close to the code wheel mechanism (31), the movable code-finding plate (4) switches to the code-finding position state (4a), and the code lock assembly (3) and the movable code-finding plate (4) cooperate with each other to realize the code-finding function; When the movable code-finding plate (4) is away from the cipher wheel mechanism (31), the movable code-finding plate (4) switches to a non-working position state (4b), the combination lock assembly (3) and the movable code-finding plate (4) are staggered, and the cipher wheel mechanism (31) can freely rotate relative to the movable code-finding plate (4).

2. The combination lock with reliable code-finding function according to claim 1, characterized in that: The movable code-finding plate (4) comprises a base frame (41), a plurality of code-finding brackets (42) protruding from the base frame (41) and corresponding to the cipher wheel mechanism (31); wherein the code-finding brackets (42) are provided with code-finding slots (43), and the cipher wheel mechanism (31) is provided with code-finding blocks (3121); When the movable code-finding plate (4) is close to the code wheel mechanism (31), the code wheel mechanism (31) is toggled so that the code-finding block (3121) is inserted into the code-finding slot (43) and forms an interference fit. At this time, the code wheel mechanism (31) is in the correct code position. When the movable code-seeking plate (4) is away from the code wheel mechanism (31), the code-seeking block (3121) and the code-seeking slot (43) are offset from each other, thereby moving the code wheel mechanism (31) so that the code wheel mechanism (31) can rotate freely.

3. The combination lock with reliable code-finding function according to claim 1 or 2, characterized in that: The movable code-finding plate (4) is in contact with a reset spring (5), and the reset spring (5) enables the movable code-finding plate (4) to always have a movement tendency away from the cipher wheel mechanism (31); The mechanical lock core assembly (2) can abut against the movable code-finding plate (4) and apply a thrust to the movable code-finding plate (4); the thrust overcomes the elastic force of the reset spring (5) and drives the movable code-finding plate (4) close to the password wheel mechanism (31).

4. The combination lock with reliable code-finding function according to claim 3, characterized in that: One end of the movable code-finding plate (4) protrudes toward one side of the mechanical lock core assembly (2) to form a contact end (411), and the other end protrudes away from the side of the mechanical lock core assembly (2) to form a support end (412); The mechanical lock core assembly (2) is capable of abutting against the contact end (411), and the mechanical lock core assembly (2) generates a force with the base frame (41) through the contact end (411); One end of the return spring (5) is sleeved on the support end (412), and the other end abuts against the housing (1).

5. The combination lock with reliable code-finding function according to claim 2, characterized in that: The code-finding bracket (42) has at least two convex ribs (421), and the code-finding groove (43) is formed between the two convex ribs (421).

6. The combination lock with reliable code-finding function according to claim 5, characterized in that: The rib (421) has an inclined side wall (4211) on the side facing away from the code-finding slot (43), and the code wheel mechanism (31) is toggled so that the code-finding block (3121) can enter the code-finding slot (43) from outside the code-finding slot (43) along the inclined side wall (4211); The side of the rib (421) facing the code-seeking slot (43) has a straight side wall (4212). When the code-seeking block (3121) is located in the code-seeking slot (43), the code-seeking block (3121) forms an interference fit with the straight side wall (4212). At this time, the code wheel mechanism (31) cannot be rotated by turning the code wheel mechanism (31).

7. The combination lock with reliable code-finding function according to claim 5, characterized in that: The height of one convex rib (421) is smaller than the height of the other convex rib (421).

8. The combination lock with reliable code-finding function according to claim 1 or 2, characterized in that: The mechanical lock core assembly (2) includes a driving member (21) and a key lock core (22), wherein a transmission hole (211) is provided in the driving member (21), and an eccentric swinging member (221) is provided on the key lock core (22), and the eccentric swinging member (221) is inserted into the transmission hole (211); Under the action of the eccentric swinging member (221), the driving member (21) can extend forward or retract backward; When the driving member (21) extends forward, the driving member (21) drives the movable code-finding plate (4) to approach the password wheel mechanism (31); When the driving member (21) retracts backward, the movable code-finding plate (4) moves away from the password wheel mechanism (31).

9. The combination lock with reliable code-finding function according to claim 2, characterized in that: The side of the base frame (41) is provided with a mounting buckle (413), the housing (1) is provided with a slot (11), the mounting buckle (413) is snapped into the slot (11), and the size of the slot (11) is larger than the size of the mounting buckle (413), so as to form a movable gap (111); The base frame (41) is provided with one or more limit blocks (414) protruding upwards, and a stop block (12) is provided in the housing (1). During the movement of the movable code-finding plate (4), the limit block (414) can abut against the stop block (12) and form a unidirectional limit stop fit.

10. The combination lock with reliable code-finding function according to claim 2, characterized in that: The cipher wheel mechanism (31) comprises at least a cipher wheel body (311) and a character wheel core (312); the character wheel core (312) is capable of rotating along with the cipher wheel body (311); the cipher wheel body (311) is at least partially exposed outside the housing (1); the character wheel core (312) is located inside the housing (1); and the code-seeking block (3121) is formed on the character wheel core (312).

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