A combination lock with a lost combination recovery mechanism

Abstract

The application discloses a password lock with a password finding mechanism, which comprises a transversely movable moving shaft, a boss and a first magnetic attraction element arranged on the moving shaft, a rotatable dial assembly sleeved on the outer periphery of the moving shaft, a clamping groove capable of cooperating with the boss arranged on the dial assembly, the dial assembly being unable to rotate relative to the moving shaft when the boss is clamped into the clamping groove, a second magnetic attraction element capable of cooperating with the first magnetic attraction element arranged on the dial assembly, annularly distributed connecting grooves arranged on the dial assembly, a vertically movable connecting plate, an elastic element capable of cooperating with the connecting grooves arranged on the connecting plate, the dial assembly being unable to rotate relative to the moving shaft under no external force when the elastic element cooperates with the connecting grooves, and the dial assembly being capable of rotating relative to the moving shaft under the magnetic force of the first magnetic attraction element and the second magnetic attraction element when the elastic element is separated from the connecting grooves, so that the boss is aligned with the clamping groove and can move into the clamping groove, and the password lock can quickly find the password.

Description

Technical Field

[0001] This invention relates to a combination lock with a password retrieval mechanism. Background Technology

[0002] The mechanical combination lock combines the convenience of electronic combination locks with the stability of key-operated mechanical locks, and has a wide range of market applications. Its operation is unique: turning one wheel to a preset number inputs one digit of the password. Repeating this process with other wheels until the last digit is entered unlocks the lock. Existing combination locks unlock using a pre-set numerical password, but if the password is forgotten, the lock cannot be opened, requiring external force, which may damage the lock and necessitate replacement, costing money, effort, and time. Alternatively, a key can be used, but without the password, the key is required for all future uses, negating the advantages of combination locks. Existing improvements include methods such as probe assembly and sliding mechanisms for password retrieval. Inserting a probe assembly into the lock body and using a spring within the assembly to elastically extend and retract the probe to retrieve the password is a complex and cumbersome operation. Alternatively, there is a plug-in structure, where the plug-in component is a cantilever beam structure resembling a claw. The cantilever beam enables the self-elasticity of plugging and unplugging to find the password, but the plug-in structure can only find the password in one direction. Summary of the Invention

[0003] In order to solve the above-mentioned technical problems, the purpose of this invention is to provide a combination lock with a password retrieval mechanism.

[0004] This invention is achieved through the following technical solution:

[0005] A combination lock with a password retrieval mechanism includes: a horizontally movable shaft, on which a boss and a first magnetic chuck are provided; a digit wheel assembly, rotatably sleeved on the outer periphery of the movable shaft, the digit wheel assembly having a slot that engages with the boss; when the boss engages with the slot, the digit wheel assembly cannot rotate relative to the movable shaft; the digit wheel assembly also has a second magnetic chuck that engages with the first magnetic chuck; the digit wheel assembly further includes a connecting ring, the outer periphery of which has annular connecting grooves; and a vertically movable connecting plate, the connecting plate having an elastic element that engages with the connecting grooves; when the elastic element engages with the connecting grooves, the digit wheel assembly cannot rotate relative to the movable shaft without external force; when the elastic element disengages from the connecting grooves, the digit wheel assembly can rotate relative to the movable shaft under the magnetic force of the first and second magnetic chucks, aligning the boss with the slot and allowing it to move into the slot.

[0006] In this embodiment of the invention, the character wheel assembly includes a bushing and a character wheel that can rotate synchronously relative to the moving shaft. The connecting ring is coaxially disposed on the side of the character wheel. The bushing is sleeved on the outer periphery of the moving shaft. The slot is disposed on the inner periphery of the bushing. A connecting key is disposed on the outer periphery of the bushing. A keyway that can cooperate with the connecting key is disposed on the inner periphery of the character wheel and / or the connecting ring. The second magnetic suction member is disposed on the bushing and / or the character wheel.

[0007] In this embodiment of the invention, a movable component capable of lateral movement is also included. The movable component is provided with a first protrusion and a first guide slope. The first guide slope can cooperate with the connecting plate to move. The lateral movement of the movable component can control the vertical movement of the connecting plate under the action of the first guide slope.

[0008] In this embodiment of the invention, the connecting plate is provided with a second protrusion, and the second protrusion is provided with a second guide slope, and the first guide slope can cooperate with the second guide slope for connection.

[0009] In this embodiment of the invention, a body is also included. The body has a first mounting cavity. The movable shaft, the character wheel assembly, the connecting plate, and the movable component are disposed in the first mounting cavity. The connecting plate is located above the movable component. A connecting block is disposed in the first mounting cavity. The connecting block has a connecting hole. The connecting plate has a connecting post that can cooperate with the connecting hole. A fourth spring is sleeved on the connecting post.

[0010] In this embodiment of the invention, the main body is further provided with a second mounting cavity, in which a lock cylinder assembly, a lock shell, and a rotating disk are provided. The rotating disk can rotate synchronously with the lock cylinder assembly. One end of the moving part can be connected to the peripheral wall of the rotating disk. A third spring is provided between the other end of the moving part and the inner peripheral wall of the first mounting cavity. A notch is provided on the periphery of the rotating disk. When one end of the moving part is connected to the notch, the moving part can move towards the second mounting cavity under the action of the second spring, thereby causing the connecting plate to move vertically downward.

[0011] In this embodiment of the invention, a fixing frame is further provided in the first mounting cavity. A first retaining ring and a second retaining ring are respectively sleeved at both ends of the fixing frame. The first retaining ring is closer to the second mounting cavity than the second retaining ring. The first retaining ring and the second retaining ring are sleeved on the outer periphery of the moving shaft. The character wheel assembly is located between the first retaining ring and the second retaining ring. A second spring is provided between one end of the moving shaft and the fixing frame. A first spring is provided between the second retaining ring and the fixing frame.

[0012] In this embodiment of the invention, the other end of the movable shaft can extend to the second mounting cavity, and a guide slope is provided on the peripheral wall of the lock housing. The guide slope can be connected to the other end of the movable shaft, and the rotation of the lock housing can drive the movable shaft to move laterally in the direction of the second retaining ring under the action of the guide slope.

[0013] In this embodiment of the invention, a recess is provided on the peripheral wall of the lock housing, and the guide slope is provided on the side wall of the recess.

[0014] In this embodiment of the invention, the connecting ring and the character wheel are integrally formed.

[0015] The present invention provides a combination lock with a password retrieval mechanism, which has the following advantages: it provides a faster and more convenient way to retrieve the password; the password is automatically displayed when the key is inserted to unlock the lock, which is simple and convenient, and prevents the value of the combination lock from being lost due to forgotten password. Attached Figure Description

[0016] To more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is an exploded view of the character wheel assembly and the moving shaft in this invention.

[0018] Figure 2 This is a schematic diagram of the interaction between the character wheel assembly and the moving shaft in this invention.

[0019] Figure 3 This is an exploded view of the present invention.

[0020] Figure 4 This is a schematic diagram of the connecting plate in this invention.

[0021] Figure 5 This is a schematic diagram of the movable component in this invention.

[0022] Figure 6 This is a schematic diagram of the main body in this invention.

[0023] Figure 7 This is a schematic diagram of the cooperation between the lock housing and the rotating disk in this invention.

[0024] Figure 8 This is a cross-sectional view of the present invention.

[0025] Figure 9 This is a schematic diagram of state one in this invention. Figure 1 .

[0026] Figure 10 This is a schematic diagram of state one in this invention. Figure 2 .

[0027] Figure 11 This is a schematic diagram of state one in this invention. Figure 3 .

[0028] Figure 12 This is a schematic diagram of state one in this invention. Figure 4 .

[0029] Figure 13 This is a schematic diagram of state two in this invention. Figure 1 .

[0030] Figure 14 This is a schematic diagram of state two in this invention. Figure 2 .

[0031] Figure 15 This is a schematic diagram of state two in this invention. Figure 3 .

[0032] Figure 16 This is a schematic diagram of state two in this invention. Figure 4 . Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to represent selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0036] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0037] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] Referring to the accompanying drawings, a combination lock with a password retrieval mechanism includes: a horizontally movable shaft 10, on which bosses 11 and first magnetic attractors 12 are provided. The number of bosses on the movable shaft is the same as the number of digit wheel assemblies. The drawing shows four digit wheel assemblies, meaning the combination lock has a four-digit password. This means the movable shaft can only move horizontally to unlock the lock when all four bosses are aligned with the slots of the four digit wheel assemblies. Referring to the accompanying drawings, the movable shaft can move horizontally left and right. In use, the first magnetic attractor can be a magnet; two first magnetic attractors are provided, each positioned on the movable shaft. Front and rear sides; Pin wheel assembly 20, which is rotatably sleeved on the outer periphery of the moving shaft. The pin wheel assembly is provided with a slot 21 that can cooperate with the boss. When the boss is engaged in the slot, the pin wheel assembly cannot rotate relative to the moving shaft. Because the moving shaft cannot rotate, when the boss is engaged in the slot, the pin wheel assembly cannot rotate relative to the moving shaft, and the combination lock's password is correct. However, when the combination lock's password is incorrect, the boss and the slot are misaligned, and the pin wheel assembly cannot move laterally. The end faces of the boss and the pin wheel assembly abut against each other, and the moving shaft cannot move laterally, meaning that unlocking cannot be performed. In this state, the character wheel assembly can rotate relative to the moving axis to adjust the password until the password displayed by the character wheel assembly is correct and the lock is opened; the character wheel assembly is also provided with a second magnetic member 22 that can cooperate with the first magnetic member. The second magnetic member can also be a magnet, and two of the second magnetic members are provided on each character wheel assembly; the character wheel assembly also includes a connecting ring 28, on which connecting grooves 23 are distributed in a ring on the outer peripheral wall. Preferably, the connecting ring is integrally formed with the character wheel described below; a vertically movable connecting plate 30 is provided on the connecting plate, and an elastic member 31 that can cooperate with the connecting groove is provided. In one embodiment, the elastic member 31 is... Two components are grouped together to form a V-shaped component with an opening facing the wheel assembly. When the wheel assembly rotates, the character wheel assembly overcomes the elastic force of the elastic component, causing the elastic component to deform and move from one connecting groove to another. At this time, the elastic component springs back to its original position. Each group corresponds to one character wheel assembly. The elastic component of one group engages with the two corresponding connecting grooves. When the elastic component engages with the connecting groove, the character wheel assembly cannot rotate relative to the moving shaft without external force. The magnetic force of the first magnetic component and the second magnetic component cannot overcome the effect of the elastic component on the connecting groove. The character wheel assembly can only be rotated by the user flicking it.When the elastic element disengages from the connecting groove, the character wheel assembly can rotate relative to the moving shaft under the magnetic force of the first and second magnetic elements. Even without external force, the character wheel assembly can rotate relative to the moving shaft until the boss aligns with the slot. At this point, the moving shaft can move left and right, allowing the boss to move into the slot. Unlocking is then possible because the character wheel assembly displays the correct combination lock password. Simultaneously, in this state, the elastic element no longer restrains the character wheel assembly, allowing it to rotate freely under external force. However, when the character wheel assembly stops rotating, it displays the correct combination lock password. In a preferred embodiment, the boss is positioned above the moving shaft, and the two first magnetic elements are positioned on the front and rear sides of the moving shaft. Similarly, the slot is positioned above the character wheel assembly, and the two second magnetic elements are positioned on the front and rear sides of the character wheel assembly. Of course, the first magnetic elements can be positioned anywhere on the moving shaft, as long as the second magnetic elements correspond to them; the same applies to the boss and slot.

[0039] Preferably, the character wheel assembly includes a bushing 24 and a character wheel 25 that can rotate synchronously relative to the moving shaft. A connecting ring is coaxially disposed beside the character wheel, fitted around the outer periphery of the bushing. The connecting ring and the character wheel are integrally formed as a single component during use. Ten digits (0-9) are distributed around the outer periphery of the character wheel, and ten connecting grooves are provided, corresponding to the number of digits. The bushing is fitted around the outer periphery of the moving shaft, and the character wheel is fitted around the outer periphery of the bushing. A slot is provided on the inner periphery of the bushing. A connecting key 26 is provided on the outer periphery of the bushing. A keyway 27 that mates with the connecting key is provided on the inner periphery of the character wheel and / or the connecting ring. (Refer to the accompanying drawings for details.) Figure 1 In one embodiment, the keyway is located on the inner circumference of the connecting ring, and the number of connecting keys and keyways is 10, which is the same as the number of password digits. The bushing and the number wheel can change their relative installation angle, so that the password of the combination lock can be modified. The second magnetic element is located on the bushing and / or the number wheel.

[0040] Furthermore, it also includes a movable component 40 capable of lateral movement. The movable component is provided with a first protrusion 41, and the first protrusion is provided with a first guide slope 42. The first guide slope can cooperate with the connecting plate to move. The lateral movement of the movable component can control the vertical movement of the connecting plate under the action of the first guide slope. Referring to the attached drawings, when the movable component moves towards the second mounting cavity, the connecting plate will move downward under the action of the first guide slope. This allows the elastic element to be released from its constraint with the connecting groove. At this time, the combination lock will automatically display the correct password.

[0041] Furthermore, the connecting plate is provided with a second protrusion 32, and the second protrusion is provided with a second guide slope 33. The first guide slope can cooperate with the second guide slope. Referring to the attached drawings, when the key drives the moving part to move towards the second mounting cavity, the second guide slope cooperates with the first guide slope, causing the connecting plate to move downward. This allows the elastic element to release its restraint from the connecting groove. At this time, the combination lock will automatically display the correct password. When the correct password is found, when the moving part moves towards the first mounting cavity, the second guide slope cooperates with the first guide slope, causing the connecting plate to move upward. This allows the elastic element to restrain the connecting groove, eliminating the need to use a key to unlock the lock later. Instead, the combination lock can be unlocked using the password.

[0042] Preferably, the device also includes a body 100, on which a first mounting cavity 110 is provided. The moving shaft, the character wheel assembly, the connecting plate, and the moving component are disposed in the first mounting cavity. The connecting plate is located above the moving component. A connecting block 111 is provided in the first mounting cavity. A connecting hole 112 is provided on the connecting block. A connecting post 34 that can cooperate with the connecting hole is provided on the connecting plate. A fourth spring 35 is sleeved on the connecting post. The fourth spring can apply a downward pressure to the connecting plate when the moving component moves into the second mounting cavity, causing the connecting plate to move downward.

[0043] Preferably, the main body is further provided with a second mounting cavity 120, which is located beside the first mounting cavity. The second mounting cavity contains a matching lock cylinder assembly 200, a lock shell 300, and a rotating disk 400. The rotating disk can rotate synchronously with the lock cylinder assembly. When the password is correct, turning the key 500 can rotate the lock cylinder assembly, lock shell, and rotating disk together. When the password is incorrect, the moving shaft will restrain the lock shell, and turning the key will only rotate the lock cylinder assembly and rotating disk together, without rotating the lock shell. One end of the moving part can engage with the peripheral wall of the rotating disk, and the other end of the moving part is provided with a third spring 43 between it and the inner peripheral wall of the first mounting cavity. A notch 410 is provided on the periphery of the rotating disk. For details on the engagement of one end of the moving part with the notch, please refer to the accompanying drawings. Figure 15 The movable component can move towards the second mounting cavity under the action of the second spring, thereby causing the connecting plate to move vertically downward.

[0044] Preferably, a fixing frame 600 is further provided in the first mounting cavity. A first retaining ring 610 and a second retaining ring 620 are respectively fitted at both ends of the fixing frame. The first retaining ring is closer to the second mounting cavity than the second retaining ring. The first and second retaining rings are fitted on the outer periphery of the moving shaft. The character wheel assembly is located between the first and second retaining rings. A second spring 630 is provided between one end of the moving shaft and the fixing frame. A first spring 640 is provided between the second retaining ring and the fixing frame.

[0045] Furthermore, the other end of the movable shaft can extend into the second mounting cavity. A guide slope 310 is provided on the peripheral wall of the lock housing. The guide slope can engage with the other end of the movable shaft. Rotation of the lock housing can drive the movable shaft to move laterally towards the second retaining ring under the action of the guide slope, thus unlocking. A recess 320 is provided on the peripheral wall of the lock housing, and the guide slope is located on the side wall of this recess. The second spring can ensure that the movable shaft consistently moves towards the lock housing, thus achieving the locking function.

[0046] Refer to the attached diagram in the instruction manual. Figure 6 The first mounting cavity is also provided with a support plate 113, and the two ends of the fixing frame are placed on the support plate.

[0047] More specifically, the present invention includes a first retaining ring, a character wheel, a bushing, a second retaining ring, a first spring, a second spring, and a fixing frame, all mounted on the moving shaft. The first and second retaining rings are located on opposite sides of the fixing frame, and the bushing is located inside the fixing frame. The first spring assists the bushing in completing its reset action, and the second spring assists the moving shaft in completing its reset action. A connecting plate has four connecting posts for placing a fourth spring, which can be a tower-shaped spring. A connecting hole is provided in the first mounting cavity of the main body, and the connecting posts on the connecting plate are inserted into the connecting hole. This fourth spring assists the elastic structure on the connecting plate in retracting its positioning function on the character wheel. Four small screws 71 are provided on the cover plate 130 to fix the cover plate to the main body, and four small screws 72 are provided to fix the panel to the opening of the first mounting cavity of the main body.

[0048] In this embodiment, a retraction mechanism is provided at the position where the moving shaft mates with the recessed portion to assist the moving shaft in disengaging from the recessed portion. The retraction mechanism is either an arc-shaped boss at the front end of the moving shaft or a guide ramp on the recessed portion. Providing either the arc-shaped boss or the guide ramp assists the moving shaft in disengaging from the recessed portion; furthermore, a second spring is provided at the end of the moving shaft away from the lock housing to assist the moving shaft in completing a reset action. This arrangement allows for better lateral movement of the moving shaft.

[0049] The lock case has a recessed part. When the lock case is rotated, the lock case pushes against the moving shaft. The moving shaft is limited by the boss and the number wheel assembly. That is, the boss and the slot are misaligned, so the moving shaft cannot move towards the second retaining ring and is in the locked state. When the correct combination is entered, the lock case is rotated. The boss on the moving shaft and the slot of the number wheel assembly are aligned and engaged. The lock case pushes against the moving shaft, and the moving shaft is disengaged from the recessed part on the lock case and is in the unlocked state.

[0050] During assembly, first place the fourth spring on the connecting post of the connecting plate, insert the connecting post of the connecting plate into the connecting hole, and the moving part cooperates with the connecting plate. Then, insert the third spring into the end of the moving part, and then cover the cover plate 130. Tighten the four small screws 71 on the cover plate 130 to fix the cover plate 130. Place the lock shell into the second mounting cavity, and string the first retaining ring, the number wheel assembly, the second retaining ring, the first spring, the second spring, and the fixing bracket onto the moving shaft. Then place them into the first mounting cavity. After inserting the key into the lock cylinder assembly, put them into the lock shell together. Remove the key, cover the panel 140, and tighten the four small screws 72 on the cover plate 130 to fix the panel 140. Install the lock tongue 700 at the tail of the lock cylinder assembly.

[0051] When searching for the password, inserting the key causes the lock cylinder assembly to rotate 90 degrees clockwise. The lock case and the rotating disc move relative to each other. A movable component on one side of the lock cylinder assembly, pushed by a third spring, engages with the notch. The connecting plate loses the guide slope support of the movable component and, under the action of a fourth spring, moves downwards. At this point, the elastic component on the connecting plate, which positions the number wheels, moves away from the connecting groove. The number wheels lose their positioning, and the moving shaft (with a first magnetic attraction component) and the number wheel assembly (with a second magnetic attraction component) attract each other magnetically, causing the number wheel assembly to rotate relative to the moving shaft until the number wheels stop rotating. The resulting numbers are the password. This allows the lock to be opened simply by inserting the key, and the password is automatically displayed.

[0052] The foregoing description illustrates and describes preferred embodiments of the present invention. As previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A combination lock with a password retrieval mechanism, characterized in that, include: A movable shaft capable of lateral movement, wherein the movable shaft is provided with a boss and a first magnetic attraction element; The type wheel assembly is rotatably sleeved on the outer periphery of a moving shaft. The type wheel assembly has a slot that engages with a boss. When the boss is engaged in the slot, the type wheel assembly cannot rotate relative to the moving shaft. The type wheel assembly also has a second magnetic element that engages with a first magnetic element. The type wheel assembly further includes a connecting ring with connecting grooves distributed annularly on its outer peripheral wall. A vertically movable connecting plate is provided with an elastic element that can cooperate with a connecting groove. When the elastic element cooperates with the connecting groove, the character wheel assembly cannot rotate relative to the moving axis without the action of external force. When the elastic element disengages from the connecting groove, the character wheel assembly can rotate relative to the moving shaft under the magnetic force of the first magnetic suction element and the second magnetic suction element, so that the boss is aligned with the slot and can move into the slot. It also includes a movable component capable of lateral movement, wherein the movable component is provided with a first protrusion and a first guide slope is provided on the first protrusion, the first guide slope can cooperate with the connecting plate to move, and the lateral movement of the movable component can control the vertical movement of the connecting plate under the action of the first guide slope.

2. A combination lock with a password retrieval mechanism according to claim 1, characterized in that, The type wheel assembly includes a bushing and a type wheel that can rotate synchronously relative to the moving shaft. The connecting ring is coaxially disposed on the side of the type wheel. The bushing is sleeved on the outer periphery of the moving shaft. The slot is disposed on the inner periphery of the bushing. A connecting key is disposed on the outer periphery of the bushing. A keyway that can cooperate with the connecting key is disposed on the inner periphery of the type wheel and / or the connecting ring. The second magnetic suction member is disposed on the bushing and / or the type wheel.

3. A combination lock with a password retrieval mechanism according to claim 1 or 2, characterized in that, The connecting plate is provided with a second protrusion, and the second protrusion is provided with a second guide slope, and the first guide slope can cooperate with the second guide slope for connection.

4. A combination lock with a password retrieval mechanism according to claim 3, characterized in that, It also includes a body, on which a first mounting cavity is provided. The moving shaft, the character wheel assembly, the connecting plate, and the moving part are disposed in the first mounting cavity. The connecting plate is located above the moving part. A connecting block is provided in the first mounting cavity. A connecting hole is provided on the connecting block. A connecting post that can cooperate with the connecting hole is provided on the connecting plate. A fourth spring is sleeved on the connecting post.

5. A combination lock with a password retrieval mechanism according to claim 4, characterized in that, The main body is also provided with a second mounting cavity, in which a matching lock cylinder assembly, lock shell, and rotating disk are arranged. The rotating disk can rotate synchronously with the lock cylinder assembly. One end of the moving part can be connected to the peripheral wall of the rotating disk. A third spring is provided between the other end of the moving part and the inner peripheral wall of the first mounting cavity. A notch is provided on the periphery of the rotating disk. When one end of the moving part is connected to the notch, the moving part can move towards the second mounting cavity under the action of the second spring, thereby causing the connecting plate to move vertically downward.

6. A combination lock with a password retrieval mechanism according to claim 5, characterized in that, A fixing frame is also provided in the first mounting cavity. A first retaining ring and a second retaining ring are respectively fitted at both ends of the fixing frame. The first retaining ring is closer to the second mounting cavity than the second retaining ring. The first retaining ring and the second retaining ring are fitted on the outer periphery of the moving shaft. The character wheel assembly is located between the first retaining ring and the second retaining ring. A second spring is provided between one end of the moving shaft and the fixing frame. A first spring is provided between the second retaining ring and the fixing frame.

7. A combination lock with a password retrieval mechanism according to claim 6, characterized in that, The other end of the movable shaft can extend to the second mounting cavity. A guide slope is provided on the peripheral wall of the lock housing. The guide slope can be connected to the other end of the movable shaft. The rotation of the lock housing can drive the movable shaft to move laterally in the direction of the second retaining ring under the action of the guide slope.

8. A combination lock with a password retrieval mechanism according to claim 7, characterized in that, The lock housing has a recessed portion on its peripheral wall, and the guide slope is provided on the side wall of the recessed portion.

9. A combination lock with a password retrieval mechanism according to claim 8, characterized in that, The connecting ring is integrally formed with the character wheel.

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