Mechanical coded lock with split code searching mechanism

Abstract

A mechanical coded lock with a split type code searching mechanism comprises a shell, a mechanical lock cylinder assembly, a coded lock assembly and the code searching mechanism, and the coded lock assembly comprises one or more sets of code wheel mechanisms; the code searching mechanism comprises a movable guide plate, a code searching sheet, a first side spring assembly and a second side spring assembly; the code searching piece at least has a code searching position state and a non-working position state, the mechanical lock cylinder assembly acts on the code searching piece through the movable guide plate, the first side spring assembly and the second side spring assembly abut against the position between the inner wall of the shell and the code searching piece, and the password wheel mechanism is located between the first side spring assembly and the second side spring assembly. According to the utility model, a double-side elastic reset structure is adopted, the reset force is more direct and powerful, the code wheel mechanism is taken as the center, and a symmetrical distributed structure is adopted, so that the acting force between the code searching sheet and the spring assembly is more balanced, and the movement of the code searching sheet and the spring assembly is more regular, stable and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical password locks, in particular to a mechanical password lock with a split code-finding mechanism. 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 revealed significant reliability flaws. Specifically, during the code search process, the lock tongue moves horizontally against the movable plate, which in turn drives the code search plate upward, allowing the code search plate to mate with the character wheel. When resetting after code search, the code search plate relies on the elasticity of its own material to reset, but this reset effect is unstable, unreliable, and uncontrollable. Furthermore, the code search plate is a relatively thin and elastic piece, which is prone to fatigue (permanent deformation), resulting in poor coordination with the movable plate and character wheel, making it impossible to successfully find the correct password.

[0005] Existing Example 2, referring to patent document CN107780712B, provides a combination lock capable of retrieving a password, comprising a combination assembly and a lock cylinder. The combination assembly includes a coding wheel and a combination wheel. The combination wheel and the matching coding wheel cooperate with each other, thereby being able to rotate synchronously. The combination lock is provided with several code-finding members. When the combination wheels are in a disordered state, rotating the lock cylinder can store elastic potential energy in the code-finding members. After storing elastic potential energy in the code-finding members, when a certain combination wheel is turned until the password is correct, the code-finding member slides to engage the matching coding wheel, thereby restricting the rotation of the combination wheel. When the owner of the combination lock forgets the password or lends the combination lock to someone else, they only need to rotate the lock cylinder and then turn the combination wheel to retrieve the password, making the combination lock more flexible and convenient to use. After use, the structure of Example 2 has exposed significant reliability defects. Specifically, its code-finding process relies on the cooperation of multiple components such as energy storage springs, code-finding rods, and transmission sliders. When resetting after code search is completed, the energy storage shrapnel relies on the elasticity of its own material to achieve reset, while the code search rod relies on the spring to reset. Multiple components reset independently, and the reset movement between each other is prone to precision deviation, resulting in incomplete reset, structural interference or jamming, affecting subsequent use. In addition, the energy storage shrapnel is a relatively thin sheet with a certain elasticity, which is prone to fatigue (permanent deformation), and then does not cooperate smoothly with the moving plate and the character wheel, making it impossible to find the correct password smoothly. In addition, when searching for the code, due to the upward push of the code search rod, the password component needs to continuously scrape against the code search rod until the correct password is found. The damage caused to the code search rod and the password component in this process is irreversible. In addition, there is no redundant design. Once one of the code search rods or reset springs fails, the entire lock will not be able to perform the code search function normally. Summary of the Invention

[0006] In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a mechanical password lock with a split code-finding mechanism.

[0007] The technical solution of the utility model to solve the technical problem is: a mechanical password lock with a split code-finding mechanism, 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] A code-seeking mechanism, which can act on the code wheel mechanism, includes a movable guide plate and a code-seeking piece; the code-seeking piece has at least a code-seeking position state and a non-working position state; when the code-seeking piece approaches the code wheel mechanism, the code-seeking piece switches to the code-seeking position state, the code wheel mechanism and the code-seeking piece cooperate with each other and find the correct code of the code wheel mechanism; when the code-seeking piece moves away from the code wheel mechanism, the code-seeking piece switches to the non-working position state, the code wheel mechanism and the code-seeking piece stagger with each other, and the code wheel mechanism can freely rotate relative to the movable code-seeking plate; the mechanical lock core assembly acts on the code-seeking piece through the movable guide plate, so that the code-seeking piece switches from the non-working position state to the code-seeking position state;

[0012] The code-seeking mechanism also includes a first side spring assembly and a second side spring assembly, the first side spring assembly and the second side spring assembly are respectively abutted between the inner wall of the shell and the code-seeking piece, and the password wheel mechanism is located between the first side spring assembly and the second side spring assembly.

[0013] In some preferred embodiments of the present invention, the movable guide plate is provided with a plurality of wedge-shaped guide ribs, and the side wall of the code-seeking piece is provided with a plurality of driven ribs protruding outwardly, and the wedge-shaped guide ribs can abut against the driven ribs and form a transmission fit;

[0014] When the movable guide plate approaches the code-seeking piece, the wedge-shaped guide ribs abut against the driven ribs, so that the movable guide plate pushes the code-seeking piece upward, so that the code-seeking piece is close to the cipher wheel mechanism;

[0015] When the movable guide plate moves away from the code-seeking piece, the wedge-shaped guide ribs separate from the driven ribs, and the code-seeking piece falls under the action of the first side spring assembly and the second side spring assembly, so that the code-seeking piece moves away from the cipher wheel mechanism.

[0016] More specifically, the lower end face of the driven rib has an inclined end face that is compatible with the wedge-shaped guide rib, and the upper end face of the driven rib is protruding with a plurality of limiting columns, and the first side spring assembly and the second side spring assembly are inserted into the corresponding limiting columns.

[0017] Optionally, the side wall of the code-seeking piece is further provided with a plurality of limit blocks protruding outwardly, and the wedge-shaped guide rib has a stop end face, and the limit block can contact the stop end face on an adjacent wedge-shaped guide rib to form a limit stop fit.

[0018] The preferred structure of the movable guide plate is that the movable guide plate has a base frame, a transmission end is formed at one end of the base frame close to the mechanical lock core assembly, and a support end is formed at one end of the base frame away from the mechanical lock core assembly;

[0019] The mechanical lock core assembly can abut against the transmission end, so that the mechanical lock core assembly generates a force through the transmission end and the movable guide plate;

[0020] A first return spring is sleeved on the support end, and the other end of the first return spring abuts against the housing. The first return spring acts on the movable guide plate through the support end, so that the movable guide plate always has a movement tendency away from the code-seeking piece.

[0021] Furthermore, the side of the base frame has a mounting buckle, and the shell 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.

[0022] A preferred embodiment of the mechanical lock core assembly is as follows: the mechanical lock core assembly includes a driving member and a key lock core, wherein the driving member is provided with a transmission hole, and the key lock core is provided with an eccentric swinging member, and the eccentric swinging member is inserted into the transmission hole;

[0023] Under the action of the eccentric swinging member, the driving member can extend forward or retract backward;

[0024] When the driving member extends forward, the driving member drives the movable code-finding plate to approach the password wheel mechanism;

[0025] When the driving member retracts backward, the movable code-seeking plate moves away from the password wheel mechanism.

[0026] The more specific structure of the mechanical lock core assembly is that the mechanical lock core assembly also includes a knob, a lock core sleeve and a lock tongue. The knob forms a transmission fit with the lock tongue through the lock core sleeve. The key lock core and the drive member are arranged in the lock core sleeve, and the side of the lock core sleeve is provided with an entry and exit opening for the drive member to move.

[0027] Preferably, the first side spring assembly and the second side spring assembly each include at least two independent second return springs, and the plurality of second return springs are symmetrically arranged on both sides of the cipher wheel mechanism.

[0028] In the present invention, the cipher wheel mechanism comprises at least a cipher wheel body and a character wheel core, wherein the character wheel core can rotate together with the cipher wheel body, the cipher wheel body is at least partially exposed outside the housing, and the character wheel core is located inside the housing;

[0029] The character wheel core is provided with a code-seeking block, and a code-seeking slot is provided in the middle of the code-seeking block. When the code-seeking block is switched to the code-seeking position, the code wheel mechanism is turned to make the code-seeking block snap into the code-seeking slot, thereby finding the correct code of the code wheel mechanism.

[0030] The beneficial effects of the present invention are:

[0031] 1. The first-side spring assembly and the second-side spring assembly act on the code-seeking piece to form a double-sided elastic reset structure, which makes the reset force more direct and powerful.

[0032] Second, with the cipher wheel mechanism as the center, a symmetrical distributed structure is adopted, which makes the force between the code-seeking piece and the spring assembly (the first side spring assembly and the second side spring assembly) more balanced, thereby making the movement of the code-seeking piece and the spring assembly (the first side spring assembly and the second side spring assembly) more regular, stable and reliable.

[0033] 3. Both the first side spring assembly and the second side spring assembly include at least two independent second return springs, with a redundant design to cope with emergency situations. Even if one or more (not all) of the return springs fail, the elastic return force may be reduced, but the code-finding function can still be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the appearance structure of the utility model.

[0035] Figure 2 It is a schematic diagram of the internal structure of the present utility model.

[0036] Figure 3 It is an exploded schematic diagram of the present utility model.

[0037] Figure 4 It is a cross-sectional view in the non-working position and a partially enlarged schematic diagram.

[0038] Figure 5 It is a schematic diagram of the local structure in the non-working position.

[0039] Figure 6 It is a structural diagram of the cipher wheel mechanism and the code-seeking mechanism in a non-working position state.

[0040] Figure 7 It is a cross-sectional view and a partially enlarged schematic diagram in the code-seeking position state.

[0041] Figure 8 It is a schematic diagram of the local structure in the code-seeking position state.

[0042] Figure 9 It is a structural diagram of the cipher wheel mechanism and the code-seeking mechanism in the code-seeking position state.

[0043] Figure 10 It is a schematic diagram comparing the code-seeking block and the code-seeking slot in the code-seeking position state and the non-working position state.

[0044] Figure 11 It is a structural diagram of the code-seeking chip.

[0045] Figure 12 It is a structural schematic diagram of the movable guide plate.

[0046] Figure 13 This is a diagram showing the coordination between the installation clip and the slot.

[0047] Figure 14 This is a schematic diagram of the assembly of the cipher wheel body and the character wheel core.

[0048] Figure: 1, housing; 11, slot; 11a, movable gap; 2, mechanical lock core assembly; 21, drive member; 211, transmission hole; 22, key lock core; 221, eccentric swing member; 23, knob; 24, lock core sleeve; 241, access opening; 25, lock tongue; 3, combination lock assembly; 31, combination wheel mechanism; 311, combination wheel body; 312, character wheel core; 3121, code search block; 4, code search mechanism; 41, movable guide plate; 411, wedge shaped guide rib; 4111, inclined end face; 4112, stop end face; 412, base frame; 4121, mounting buckle; 413, transmission end; 414, support end; 415, first return spring; 42, code-seeking piece; 42a, code-seeking position state; 42b, non-working position state; 421, driven rib; 422, limit column; 423, limit block; 424, code-seeking groove; 43, first side spring assembly; 44, second side spring assembly. 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 14 A mechanical combination lock with a split code-finding mechanism comprises: a 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, which is assembled on the housing 1 and is used to lock the mechanical lock core assembly 2. The combination lock assembly 3 includes one or more combination wheel mechanisms 31 to form a multi-digit combination; a code-finding mechanism 4, which can act on the combination wheel mechanism 31, and the code-finding mechanism 4 includes a movable guide plate 41 and a code-finding piece 42; the code-finding piece 42 has at least a code-finding position state 42a and a non-operating position state 42b; When the code-seeking piece 42 approaches the password wheel mechanism 31, the code-seeking piece 42 switches to the code-seeking position state 42a, the password wheel mechanism 31 and the code-seeking piece 42 cooperate with each other and find the correct password of the password wheel mechanism 31; when the code-seeking piece 42 moves away from the password wheel mechanism 31, the code-seeking piece 42 switches to the non-working position state 42b, the password wheel mechanism 31 and the code-seeking piece 42 are staggered with each other, and the password wheel mechanism 31 can rotate freely relative to the movable code-seeking plate; the mechanical lock core assembly 2 acts on the code-seeking piece 42 by moving the guide plate 41, so that the code-seeking piece 42 switches from the non-working position state 42b to the code-seeking position state 42a.

[0054] It should be emphasized that the innovative structure in this application is: Figure 2 The code-seeking mechanism 4 further includes a first side spring assembly 43 and a second side spring assembly 44. The first side spring assembly 43 and the second side spring assembly 44 are respectively abutted between the inner wall of the housing 1 and the code-seeking plate 42, and the code wheel mechanism 31 is located between the first side spring assembly 43 and the second side spring assembly 44. In a preferred example, the first side spring assembly 43 and the second side spring assembly 44 each include at least two independent second return springs, and the multiple second return springs are symmetrically arranged on both sides of the code wheel mechanism 31.

[0055] The above content is the basic structural scheme of the utility model, and its working principle is:

[0056] Reference Figures 7 to 9When a code search is needed, the user manipulates the mechanical lock core assembly 2, which moves the guide plate 41 to drive the code-finding piece 42 toward the combination wheel mechanism 31. The combination wheel mechanism 31 then rotates. When the combination wheel mechanism 31 and the code-finding piece 42 cooperate with each other, the correct combination of the combination wheel mechanism 31 is found. During this process, the code-finding piece 42 is displaced by force, thereby compressing the first side spring assembly 43 and the second side spring assembly 44.

[0057] Reference Figures 4 to 6 After the code search is completed, the mechanical lock core assembly 2 is released. Since the user's operating force is released, the elastic force of the first side spring assembly 43 and the second side spring assembly 44 acts on the code search piece 42, so that the code search piece 42 is away from the password wheel mechanism 31. The password wheel mechanism 31 and the code search piece 42 are staggered with each other, and the password wheel mechanism 31 can rotate freely relative to the movable code search plate to achieve normal operation.

[0058] In summary, the present invention adopts a method in which the first side spring assembly 43 and the second side spring assembly 44 act on the code-seeking piece 42, forming a double-sided elastic reset structure with a more direct and powerful reset force. At the same time, with the code wheel mechanism 31 as the center, a symmetrical distributed structure is adopted, so that the force between the code-seeking piece 42 and the spring assembly (the first side spring assembly 43 and the second side spring assembly 44) is more balanced, thereby making the movement of the code-seeking piece 42 and the spring assembly (the first side spring assembly 43 and the second side spring assembly 44) more regular, stable and reliable. In addition, the first side spring assembly 43 and the second side spring assembly 44 each include at least two independent second reset springs, with a redundant design to cope with emergency situations. Even if one or more (not all) of the reset springs fail, the elastic reset force may be reduced, but the code-seeking function can still be achieved.

[0059] The matching structure between the movable guide plate 41 and the code-finding piece 42 is preferably: Figure 12, a plurality of wedge-shaped guide ribs 411 are protruding from the movable guide plate 41, and a plurality of driven ribs 421 are protruding outward from the side wall of the code-seeking piece 42, and the wedge-shaped guide ribs 411 can abut against the driven ribs 421 and form a transmission fit; the specific action sequence is: when the movable guide plate 41 approaches the code-seeking piece 42, the wedge-shaped guide ribs 411 abut against the driven ribs 421, so that the movable guide plate 41 pushes the code-seeking piece 42 upward, so that the code-seeking piece 42 is close to the password wheel mechanism 31; when the movable guide plate 41 is away from the code-seeking piece 42, the wedge-shaped guide ribs 411 are separated from the driven ribs 421, and the code-seeking piece 42 falls under the action of the first side spring assembly 43 and the second side spring assembly 44, so that the code-seeking piece 42 is away from the password wheel mechanism 31. During the horizontal movement of the movable guide plate 41, the wedge-shaped guide ribs 411 contact the driven ribs 421, generating a force that pushes the driven ribs 421 (and thus the code-seeking piece 42) upward toward the code wheel mechanism 31, thus achieving force transmission and direction change. The greater the interference between the wedge-shaped guide ribs 411 and the driven ribs 421, the greater the displacement of the code-seeking piece 42.

[0060] More specifically, refer to Figure 11 The lower end surface of the driven rib 421 has an inclined end surface 4111 that matches the wedge-shaped guide rib 411. In principle, the inclined end surface 4111 and the wedge-shaped guide rib 411 have the same or nearly the same inclination angle, allowing for smoother coordination between the two. Furthermore, the upper end surface of the driven rib 421 is provided with a plurality of stop posts 422. The first and second side spring assemblies 43, 44 are inserted into the corresponding stop posts 422. The stop posts 422 effectively limit the spring assemblies (the first and second side spring assemblies 43, 44), ensuring more stable and reliable movement. Furthermore, the stop posts 422 are formed on the driven rib 421, which improves the utilization of the existing structure and makes space planning more rational.

[0061] Optionally, refer to Figures 11 and 12 The side wall of the code-seeking piece 42 is also provided with a plurality of limit blocks 423 protruding outward, and the wedge-shaped guide rib 411 has a stop end surface 4112. The limit block 423 can contact with the stop end surface 4112 on an adjacent wedge-shaped guide rib 411 and form a limit stop to limit the relative displacement of the code-seeking piece 42 and the movable guide plate 41, and prevent excessive movement from leaving the normal work position.

[0062] Reference Figure 14Preferably, in the present invention, the code wheel mechanism 31 includes at least a code wheel body 311 and a character wheel core 312. The character wheel core 312 is capable of rotating along with the code wheel body 311. The code wheel body 311 is at least partially exposed outside the housing 1, and the character wheel core 312 is located within the housing 1. The character wheel core 312 has a code search block 3121. The code search piece 42 has a code search slot 424 in the middle. The code search piece 42 is switched to the code search position 42a, and the code wheel mechanism 31 is moved so that the code search block 3121 is engaged with the code search slot 424, thereby finding the correct code of the code wheel mechanism 31. More preferably, the character wheel core 312 and the code wheel body 311 are engageable and disengageable. When engaged, they rotate together, and when disengaged, they can perform a code change function. (The specific code change structure is not a distinguishing feature of the present invention and can be referred to the structure and working principle of the prior art, and will not be described in detail here.)

[0063] Example 2

[0064] Based on the structure of the first embodiment, this embodiment provides a preferred structure of the movable guide plate 41, specifically: Figure 12 The movable guide plate 41 has a base frame 412. A transmission end 413 is formed on the end of the base frame 412 that is close to the mechanical lock core assembly 2, and a support end 414 is formed on the end of the base frame 412 that is away from the mechanical lock core assembly 2. The mechanical lock core assembly 2 can abut against the transmission end 413, so that the mechanical lock core assembly 2 generates a force on the movable guide plate 41 through the transmission end 413 (the force applied by the mechanical lock core assembly 2 to the movable guide plate 41 needs to overcome the elastic force of the first return spring 415 on the movable guide plate 41). On the other hand, a first return spring 415 is sleeved on the support end 414. The other end of the first return spring 415 abuts against the housing 1. The first return spring 415 acts on the movable guide plate 41 through the support end 414, so that the movable guide plate 41 always has a tendency to move away from the code-finding plate 42. Once the mechanical lock core assembly 2 is released, the first return spring 415 can drive the movable guide plate 41 to return to its original position.

[0065] It is worth mentioning that, referring to Figure 13 The side of the base frame 412 has a mounting clip 4121. The housing 1 has a slot 11, into which the mounting clip 4121 snaps, thereby achieving an assembly relationship between the two. Furthermore, the slot 11 is larger than the mounting clip 4121, forming a movable gap 11a. The movable gap 11a is used to meet the movement requirements of the movable code search plate.

[0066] Example 3

[0067] In this embodiment, a preferred structural solution of a mechanical lock core assembly 2 is provided, specifically: Figures 2 to 9 The mechanical lock core assembly 2 includes a drive member 21 and a key lock core 22. The drive member 21 is provided with a transmission hole 211, and the key lock core 22 is provided with an eccentric swinging member 221. The eccentric swinging member 221 is inserted into the transmission hole 211. Under the action of the eccentric swinging member 221, the drive member 21 can extend forward or retract backward. Specifically, when the drive member 21 extends forward, the mechanical lock core assembly 2 can abut against the movable guide plate 41 through the drive member 21 and apply a thrust to the movable guide plate 41. After the thrust overcomes the elastic force of the first return spring 415, it drives the movable guide plate 41 to approach the password wheel mechanism 31. In addition, when the drive member 21 retracts backward, the force applied to the movable guide plate 41 is released, and under the action of the first return spring 415, the movable guide plate 41 is reset.

[0068] Reference Figure 2 The mechanical lock core assembly 2 is more specifically structured as follows: it further comprises a knob 23, a lock core housing 24, and a lock tongue 25. The knob 23 forms a transmission connection with the lock tongue 25 via the lock core housing 24. The key lock core 22 and the driver 21 are disposed within the lock core housing 24, and a side opening 241 is provided on the lock core housing 24 for the driver 21 to move. When the user operates the switch component, the switch component drives the lock tongue 25 to change via the lock core housing 24, thereby achieving unlocking and locking functions. When code searching is required, the key lock core 22 is driven by the key, thereby moving the guide plate 41 and the code search plate 42 to achieve the code search function. Therefore, code searching is only possible with the key, improving the security of the lock.

[0069] It is worth noting that other technical solutions of the present invention belong to the existing technology and are therefore not described in detail.

[0070] 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 mechanical combination lock with a split code-finding mechanism, 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); A code-seeking mechanism (4) is capable of acting on a cipher wheel mechanism (31). The code-seeking mechanism (4) comprises a movable guide plate (41) and a code-seeking piece (42); the code-seeking piece (42) has at least a code-seeking position state (42a) and a non-working position state (42b); when the code-seeking piece (42) approaches the cipher wheel mechanism (31), the code-seeking piece (42) switches to the code-seeking position state (42a), and the cipher wheel mechanism (31) and the code-seeking piece (42) cooperate with each other to find the code of the cipher wheel mechanism (31). 1); when the code-seeking plate (42) is away from the code wheel mechanism (31), the code-seeking plate (42) switches to the non-working position state (42b), the code wheel mechanism (31) and the code-seeking plate (42) are staggered with each other, and the code wheel mechanism (31) can freely rotate relative to the movable code-seeking plate; the mechanical lock core assembly (2) acts on the code-seeking plate (42) by moving the guide plate (41), so that the code-seeking plate (42) switches from the non-working position state (42b) to the code-seeking position state (42a); Its characteristics are: The code-finding mechanism (4) further comprises a first side spring assembly (43) and a second side spring assembly (44), wherein the first side spring assembly (43) and the second side spring assembly (44) are respectively abutted between the inner wall of the housing (1) and the code-finding plate (42), and the cipher wheel mechanism (31) is located between the first side spring assembly (43) and the second side spring assembly (44).

2. The mechanical combination lock with a split code-finding mechanism according to claim 1, characterized in that: The movable guide plate (41) is provided with a plurality of wedge-shaped guide ribs (411) protruding thereon, and the side wall of the code-seeking piece (42) is provided with a plurality of driven ribs (421) protruding outwardly, and the wedge-shaped guide ribs (411) can abut against the driven ribs (421) to form a transmission fit; When the movable guide plate (41) approaches the code-seeking piece (42), the wedge-shaped guide rib (411) abuts against the driven rib (421), thereby the movable guide plate (41) pushes the code-seeking piece (42) upward, so that the code-seeking piece (42) approaches the cipher wheel mechanism (31); When the movable guide plate (41) moves away from the code-seeking piece (42), the wedge-shaped guide rib (411) separates from the driven rib (421), and the code-seeking piece (42) falls under the action of the first side spring assembly (43) and the second side spring assembly (44), so that the code-seeking piece (42) moves away from the cipher wheel mechanism (31).

3. The mechanical combination lock with a split code-finding mechanism according to claim 2, characterized in that: The lower end surface of the driven rib (421) has an inclined end surface (4111) adapted to the wedge-shaped guide rib (411), and the upper end surface of the driven rib (421) is convexly provided with a plurality of limiting columns (422), and the first side spring assembly (43) and the second side spring assembly (44) are inserted into the corresponding limiting columns (422).

4. The mechanical combination lock with a split code-finding mechanism according to claim 2, characterized in that: The side wall of the code-seeking piece (42) is further provided with a plurality of limit blocks (423) protruding outwards, and the wedge-shaped guide rib (411) has a stop end surface (4112). The limit block (423) can contact the stop end surface (4112) on an adjacent wedge-shaped guide rib (411) to form a limit stop fit.

5. The mechanical combination lock with a split code-finding mechanism according to claim 1, characterized in that: The movable guide plate (41) has a base frame (412), and a transmission end (413) is formed at one end of the base frame (412) close to the mechanical lock core assembly (2), and a support end (414) is formed at one end of the base frame (412) away from the mechanical lock core assembly (2); The mechanical lock core assembly (2) is capable of abutting against the transmission end (413), so that the mechanical lock core assembly (2) generates a force through the transmission end (413) and the movable guide plate (41); A first return spring (415) is sleeved on the support end (414), and the other end of the first return spring (415) abuts against the housing (1). The first return spring (415) acts on the movable guide plate (41) through the support end (414), so that the movable guide plate (41) always has a tendency to move away from the code-seeking piece (42).

6. The mechanical combination lock with a split code-finding mechanism according to claim 5, characterized in that: The side of the base frame (412) is provided with a mounting buckle (4121), and the housing (1) is provided with a slot (11), the mounting buckle (4121) is snapped into the slot (11), and the size of the slot (11) is larger than the size of the mounting buckle (4121), so as to form a movable gap (11a).

7. The mechanical combination lock with a split code-finding mechanism according to claim 5, 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 to approach the password wheel mechanism (31); When the driving member (21) retracts backward, the movable code-finding plate moves away from the password wheel mechanism (31).

8. The mechanical combination lock with a split code-finding mechanism according to claim 7, characterized in that: The mechanical lock core assembly (2) further comprises a knob (23), a lock core sleeve (24) and a lock tongue (25); the knob (23) forms a transmission fit with the lock tongue (25) through the lock core sleeve (24); the key lock core (22) and the driving member (21) are arranged in the lock core sleeve (24); and an inlet and outlet opening (241) for the driving member (21) to move is opened on the side of the lock core sleeve (24).

9. The mechanical combination lock with a split code-finding mechanism according to claim 1, characterized in that: The first side spring assembly (43) and the second side spring assembly (44) each include at least two independent second reset springs, and the plurality of second reset springs are symmetrically arranged on both sides of the cipher wheel mechanism (31).

10. The mechanical combination lock with a split code-finding mechanism according to any one of claims 1 to 9, characterized in that: The cipher wheel mechanism (31) comprises at least a cipher wheel body (311) and a character wheel core (312), wherein the character wheel core (312) is capable of rotating together with the cipher wheel body (311), wherein the cipher wheel body (311) is at least partially exposed outside the housing (1), and the character wheel core (312) is located inside the housing (1); The character wheel core (312) is provided with a code-seeking block (3121), and a code-seeking slot (424) is provided in the middle of the code-seeking piece (42). When the code-seeking piece (42) is switched to a code-seeking position state (42a), the code wheel mechanism (31) is moved so that the code-seeking block (3121) is snapped into the code-seeking slot (424), thereby finding the correct code of the code wheel mechanism (31).

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