An unlocking and code-changing structure for a mechanical key password padlock

Abstract

The present invention provides an unlocking and code-changing structure for a mechanical key password padlock, which includes components such as a housing, a lock beam, an unlocking plate, and keys. The housing is composed of a bottom case and an upper cover. The unlocking plate can move back and forth and is provided with a plurality of moving slots. The keys in the slots can move up and down and rotate circumferentially. There are lock hooks with different functions on both sides of the keys, which correspond to the lock hooks II on the side walls of the moving slots to achieve unlocking and locking. A limit ring is provided at the upper end of the key. The unlocking plate has a code-changing slot, which cooperates with the anti-rotation arm on the housing and the anti-rotation groove of the limit ring to accurately control the rotation of the key, and the code can be changed only under specific conditions, with convenient operation and anti-misoperation. In addition, the key is composed of a column body and a cap body, and includes a return spring, a positioning slot, and a positioning arm to ensure the accurate position of the key. A spring in the housing pushes the unlocking plate and the reset plate, and the lock beam is linked with the two to achieve automatic reset. The overall structure is delicate, greatly improving the practicability of the padlock.

Description

Technical Field

[0001] The invention relates to the technical field of padlocks, and more particularly to an unlocking and code changing structure of a mechanical key-press password padlock. Background Art

[0002] In today's society, the demand for security protection has prompted the continuous development of various types of locks. Mechanical button password padlocks, as a common one, are widely used in many scenarios such as suitcases, warehouse doors, bicycles, etc., to provide protection for people's property safety.

[0003] Mechanical key combination padlocks generally include key components such as the lock body, lock beam, key, and internal mechanical structure. The lock body, as the basic support part, carries the entire lock's operating mechanism; the lock beam plays a key role in connecting and fixing the locked object, ensuring the safety of the object in the locked state; the key is the direct interface for the user to interact with the lock, and the lock is controlled by entering a specific password; and the internal mechanical structure is undoubtedly the core element to achieve precise unlocking and locking functions. When the user accurately enters the correct password, the various components of the internal mechanical structure work together to release the restrictions on the lock beam, allowing it to move smoothly, achieve the purpose of unlocking, and allow the user to access the object smoothly; conversely, if the password is incorrect, the internal mechanical structure will maintain the constraints on the lock beam, making it unable to move, keeping it locked, and effectively preventing unauthorized opening.

[0004] With the continuous evolution of technology, there are still many areas for improvement in the design of existing mechanical button password padlocks. For example, in a button-type changeable mechanical password lock disclosed in the patent with patent application number CN202110504526.3, the password change process is relatively cumbersome. Specifically, when the password needs to be changed, the user must first put the lock in the unlocked state, then manually turn the code change toggle plate, and continue to apply force during the entire code change process to keep the code change toggle plate in the open state after being turned. If there is a slight slack during this period, the code change operation may be interrupted or an error may occur. Only then can the button be rotated to complete the password change and reset. This series of operations not only has complicated steps, but also requires the user to always stay focused and continue to apply external force, which brings great inconvenience to daily use.

[0005] Therefore, how to deeply improve and optimize the internal mechanical structure of the mechanical button password padlock, eliminate complex and redundant operating links, further simplify its operating process, and truly meet people's needs for convenience and efficiency in daily life has become a key problem that needs to be urgently overcome in the design and research and development of mechanical button password padlocks. It is also an important breakthrough direction to promote the development of this type of lock industry and enhance user experience. Summary of the invention

[0006] In view of the problems pointed out in the background art, the present invention proposes an unlocking and code-changing structure for a mechanical button combination padlock to solve the above technical problems.

[0007] The technical solution of the present invention is realized as follows:

[0008] An unlocking and code-changing structure for a mechanical button combination padlock, comprising a housing, an unlocking plate that can move back and forth is provided inside the housing, a moving groove is provided on the unlocking plate, a button that can move up and down and rotate circumferentially is connected inside the housing, and the button is located in the moving groove.

[0009] On the left and right sides of the button, there are respectively protruding locking hooks I, and the two locking hooks I are arranged at an axial interval of the button. On one side wall of the moving groove, there is a protruding locking hook II.

[0010] An annular limiting ring is provided at the upper end of the button, the outer diameter of the limiting ring is greater than the width of the moving groove, and a code-changing groove for the limiting ring to enter is provided on the unlocking plate.

[0011] A hole for the button to pass through is provided on the upper side wall of the housing, a rotation-preventing arm extending downward is provided on the upper side wall of the housing, and a rotation-preventing groove corresponding to the rotation-preventing arm is provided on the limiting ring.

[0012] When the button moves downward and the limiting ring enters the code-changing groove, the rotation-preventing arm disengages from the rotation-preventing groove.

[0013] The present invention is further provided that the button comprises a cylinder and a cap body, the cap body and the cylinder are circumferentially fixed and axially slidably connected, and the limiting ring is provided on the cap body.

[0014] The present invention is further provided that a return spring is provided between the cap body and the cylinder.

[0015] The present invention is further provided that a connecting column connected to the cylinder is provided on the lower side wall of the housing, a corresponding connecting hole is provided on the cylinder, a protruding limiting portion is provided on the side wall of the connecting column, and a fan-shaped limiting groove is provided on the side wall of the connecting hole.

[0016] The present invention is further provided that three annular positioning grooves are provided at the lower end of the cylinder and are arranged at an axial interval of the cylinder, and a positioning arm connected to the positioning groove is provided on the housing.

[0017] The present invention is further provided that an operation groove is provided on the upper side surface of the cap body.

[0018] The present invention is further provided that it further comprises a pushing portion for pushing the cylinder upward.

[0019] The present invention is further provided that a connecting seat connected to the cylinder is provided on the lower side wall of the housing, slotted openings are respectively provided on the front and rear sides of the connecting seat, and the pushing portion and the positioning arm are respectively arranged corresponding to the slotted openings on the front and rear sides.

[0020] The present invention is further configured to further include a reset plate that can move back and forth. The pushing portion is fixedly connected to the reset plate, and further includes a series connection bar fixedly connected to the housing, and the positioning arm is fixedly connected to the series connection bar.

[0021] The present invention is further configured to have a plurality of moving grooves provided at intervals in the left - right direction, and two keys are provided in each moving groove.

[0022] Adopting the above - mentioned technical solution, the beneficial effects of the present invention are as follows:

[0023] When the password needs to be changed, first place the lock in the unlocked state, then move the key downward until the limit ring enters the code - changing slot. At this time, the key can be rotated forward or backward to set and cancel the password change.

[0024] The innovation of this application lies in: the limit ring and the code - changing slot, the anti - rotation arm and the anti - rotation slot. Only when the limit ring enters the code - changing slot and the anti - rotation arm disengages from the anti - rotation slot can the key rotate to change the password. Otherwise, the key cannot rotate.

[0025] Convenient operation: In the unlocked state, only need to move the key downward until the limit ring enters the code - changing slot, then the password can be set and cancelled. There is no need to continuously apply force to the code - changing toggle plate as in the prior art, which simplifies the code - changing operation process.

[0026] Clever structure: Through the design of the limit ring and the code - changing slot, the anti - rotation arm and the anti - rotation slot, only under specific conditions, that is, when the limit ring enters the code - changing slot and the anti - rotation arm disengages from the anti - rotation slot, can the key rotate to change the password, ensuring the security and accuracy of password setting and avoiding misoperation.

[0027] High reliability: The design and cooperation of each component are tight. Such as the unlocking plate, key, lock hook and other structures can accurately achieve the unlocking, locking and code - changing functions in different states, making the overall performance of the padlock stable and reliable, and reducing the possibility of failures. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0029] Figure 1 It is a schematic structural diagram of the unlocking plate and the key of the present invention.

[0030] Figure 2 It is an exploded schematic diagram of the key of the present invention.

[0031] Figure 3 This is a schematic structural diagram of the unlocking plate of the present invention.

[0032] Figure 4 This is a schematic structural diagram of the housing, the reset plate, and the connecting strip of the present invention.

[0033] Figure 5 This is a schematic structural diagram of the cylinder of the present invention.

[0034] Figure 6 This is a schematic structural diagram of the anti-rotation arm and the anti-rotation groove of the present invention.

[0035] Figure 7 This is a schematic structural diagram of the cylinder and the positioning arm of the present invention.

[0036] Figure 8 This is a schematic structural diagram of the padlock of the present invention.

[0037] Explanation of reference numerals in the drawings: housing 1, unlocking plate 2, moving groove 3, button 4, cylinder 41, cap body 42, first locking hook 5, second locking hook 6, limiting ring 7, code-changing groove 8, anti-rotation arm 9, anti-rotation groove 10, reset spring 11, connecting column 12, connecting hole 13, limiting part 14, limiting groove 15, positioning groove 16, positioning arm 17, operation groove 18, pushing part 19, connecting seat 20, slot opening 21, reset plate 22, connecting strip 23. Detailed implementation manners

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts belong to the scope of protection of the present invention.

[0039] Reference is made as follows Figures 1 - 8 to illustrate the present invention:

[0040] Embodiment: An unlocking and code-changing structure of a mechanical button password padlock, including a housing 1. The housing 1 includes a bottom case and an upper cover, and the upper side of the bottom case is provided with an opening to provide space for the placement of internal components. The lock beam is connected to the front side of the housing 1 and undertakes the key responsibility of locking the target object when the padlock is closed.

[0041] An unlocking plate 2 that can move back and forth is provided inside the housing 1. The unlocking plate 2 has a rectangular structure. A moving groove 3 is provided on the unlocking plate 2. The moving groove 3 is arranged in the front-back direction. There are five moving grooves 3, and the five moving grooves 3 are spaced apart in the left-right direction to provide track support for the precise movement of the subsequent button.

[0042] Matched with it is the button 4 connected inside the housing 1. The button 4 has the ability to move up and down and rotate circumferentially, and is located in the moving groove 3. Two buttons 4 are arranged at intervals in the front and back directions in each moving groove 3. Such a delicate layout ensures the diversity and accuracy of the password combination.

[0043] On the left and right sides of the button 4, there are respectively protruding locking hooks one 5. The two locking hooks one 5 are arranged at intervals in the up and down direction of the button 4. The locking hook one 5 located on the lower side is the coding locking hook one, and the locking hook one 5 located on the upper side is the empty code locking hook one.

[0044] On the right side wall of the moving groove 3, there is a protruding locking hook two 6. The corresponding relationship between the locking hook one 5 and the locking hook two 6 is the key to the operation mechanism of the password lock.

[0045] In the coding state of the button 4, the coding locking hook one corresponds to the locking hook two 6 and is located in front of the locking hook two 6, preventing the unlocking plate 2 from moving forward.

[0046] In the empty code state of the button 4, the empty code locking hook one corresponds to the locking hook two 6 and is located above the front side of the locking hook two 6. At this time, the unlocking plate 2 can move forward.

[0047] At the upper end of the button 4, there is an annular limiting ring 7. The outer diameter of the limiting ring 7 is larger than the width of the moving groove 3, so as to ensure the limiting function of the button 4 at a specific position.

[0048] On the upper side surface of the unlocking plate 2, there is a code-changing groove 8 for the limiting ring 7 to enter. The limiting ring 7 and the code-changing groove 8 work together to control the rotation authority of the button 4.

[0049] On the upper side wall (i.e., the upper cover) of the housing 1, there is a hole for the button 4 to pass through (the diameter of this hole is smaller than the outer diameter of the limiting ring 7), meeting the human-computer interaction requirements.

[0050] On the upper side wall of the housing 1, there is a downward-extending anti-rotation arm 9. On the limiting ring 7, there is an anti-rotation groove 10 corresponding to and connected to the anti-rotation arm 9. When the anti-rotation arm 9 is located in the anti-rotation groove 10, the rotation of the button 4 is strictly restricted.

[0051] The padlock is in the initial locked state: all the buttons 4 are in the raised state, and the code-changing slot 8 is located at the rear side of the button 4. For the button 4 in the coding state, the coding lock hook 1 is just located in front of the lock hook 2 6, preventing the unlocking plate 2 from moving forward and ensuring locking safety; when pressing the button 4 in the coding state, the button 4 moves downward until the limit ring 7 abuts against the unlocking plate 2, and the coding lock hook 1 moves to the lower side of the lock hook 2 6, releasing the obstruction to the unlocking plate 2, and the unlocking plate 2 can move forward to achieve unlocking. For the button 4 in the empty code state, the empty code lock hook 1 is just located above the front side of the lock hook 2 6; when pressing the button 4 in the empty code state, the button 4 moves downward, and the empty code lock hook 1 moves to the front side of the lock hook 2 6, preventing the unlocking plate 2 from moving forward and unable to unlock. And at this time, the button 4 can only move downward to the position where the limit ring 7 abuts against the unlocking plate 2. At this time, the anti-rotation arm 9 is still located in the anti-rotation groove 10, and the button 4 cannot rotate.

[0052] The padlock is in the unlocked state: which means that the unlocking plate 2 has moved forward, and the code-changing slot 8 corresponds coaxially with the button 4, creating conditions for the code-changing operation. At this time, the operation of changing the password can be carried out. The button 4 moves downward until the limit ring 7 enters the code-changing slot 8. At this time, the anti-rotation arm 9 disengages from the anti-rotation groove 10, and the button 4 can rotate. When setting the code, the button 4 rotates clockwise to the in-place position, and when not setting the code, the button 4 rotates counterclockwise to the in-place position.

[0053] Compared with the prior art, in the technical solution of the present application, when the password needs to be changed, first place the lock in the unlocked state, and then move the button 4 downward until the limit ring 7 enters the code-changing slot 8. At this time, the button 4 can be rotated forward or backward to set and cancel the password change.

[0054] The innovation of the present application lies in: the ingenious combination of the limit ring 7 and the code-changing slot 8, and the anti-rotation arm 9 and the anti-rotation groove 10. Only when the dual conditions that the limit ring 7 enters the code-changing slot 8 and the anti-rotation arm 9 disengages from the anti-rotation groove 10 are satisfied can the button 4 rotate to change the password. Otherwise, the button 4 cannot rotate, fundamentally preventing misoperations and improving the security and operation convenience of the password padlock.

[0055] The unlocking and code-changing structures of this mechanical button password padlock have the following advantages:

[0056] Convenient operation: In the unlocked state, just move the button downward until the limit ring enters the code-changing slot, and the password can be set and cancelled. There is no need to continuously apply force to the code-changing toggle plate as in the prior art, simplifying the code-changing operation process.

[0057] Clever structure: Through the design of the limit ring and the code-changing slot, and the anti-rotation arm and the anti-rotation groove, only under specific conditions, that is, when the limit ring enters the code-changing slot and the anti-rotation arm disengages from the anti-rotation groove, can the button rotate to change the password, ensuring the security and accuracy of password setting and avoiding misoperations.

[0058] High reliability: The design and cooperation of each component are tight. Structures such as the unlocking plate, button, and lock hook can accurately achieve unlocking, locking, and code-changing functions in different states, making the overall performance of the padlock stable and reliable, and reducing the possibility of failures.

[0059] The button 4 consists of two parts: a cylinder 41 and a cap 42. The cap 42 is connected to the upper side of the cylinder 41. The cap 42 and the cylinder 41 are circumferentially fixed and axially slidably connected. This means that when the cap 42 rotates around the central axis of the cylinder 41, there will be no relative displacement between the two, and they can always maintain synchronous rotation; while in the axial direction of the cylinder 41, the cap 42 can slide up and down relative to the cylinder 41. This unique connection method lays the foundation for the multi-functional operation of the button 4. For example, during the pressing operation, the cap 42 can smoothly move downward along the cylinder 41 to trigger the mechanical actions related to unlocking.

[0060] The limit ring 7 is arranged on the cap 42.

[0061] A return spring 11 is arranged between the cap 42 and the cylinder 41, which always provides a restoring elastic force for the cap 42 after pressing. When the user presses the cap 42, whether it is during the unlocking operation or other related actions, once the external force disappears, the return spring 11 will quickly push the cap 42 back to the initial position by virtue of its elastic restoring force.

[0062] A connecting column 12 connected to the cylinder 41 is arranged on the lower side wall of the housing 1 (bottom shell). The connecting column 12 is arranged in the up and down direction. A corresponding connecting hole 13 is provided at the center of the cylinder 41. The connecting column 12 is connected to the connecting hole 13. This connection method not only ensures the stable installation of the button 4 in the housing 1 but also foreshadows the subsequent function of restricting rotation.

[0063] A protruding limit part 14 is arranged on the side wall of the connecting column 12, and a fan-shaped limit groove 15 is arranged on the side wall of the connecting hole 13. The cooperation between the two forms an angle limiting mechanism, so that the button 4 can only rotate within a range of 180 degrees. This limitation is not arbitrary. On the one hand, it avoids the possible mechanical structure damage caused by excessive rotation of the button 4 and ensures the stability of the entire mechanical system of the password padlock; on the other hand, within the 180-degree rotation range, it is sufficient to meet the button movement range required for password setting, changing, and unlocking operations, which not only guarantees the integrity of the function but also improves the reliability of the system through reasonable constraints.

[0064] Three annular positioning grooves 16 are provided at the lower end of the cylinder 41. The three annular positioning grooves 16 are axially spaced on the cylinder 41, and they play a key role in accurately positioning the up and down position of the button 4 in the operating mechanism of the padlock.

[0065] The housing 1 (bottom shell) is provided with a positioning arm 17 connected to the positioning groove 16. The positioning arm 17 is designed to be long and strip-shaped, which gives it sufficient elastic deformation ability and the condition of stable contact with the column 41. One end is firmly connected to the housing 1 to ensure that it will not be displaced during the entire working process, providing a solid foundation for the other end to accurately abut against the column 41. The other end is tightly against the column 41, and relying on its own elastic characteristics, it elastically abuts against the positioning groove 16 on the column 41. Through this clever elastic coordination, no matter what state the padlock is in, the position of the button 4 in the up and down direction can be accurately controlled, effectively preventing the position displacement of the button 4 due to external force impact, vibration or other factors, and ensuring the stability and reliability of the operation of the padlock mechanical structure.

[0066] When the padlock is in the initial locked state, the positioning arm 17 is precisely connected with the positioning groove 16 located at the bottom. This connection state clearly defines the initial position of the button 4, so that the button 4 always remains at the predetermined starting height when no external operating force is applied, and maintains a proper spatial relationship with other mechanical components inside the padlock, ensuring the effective execution of the locking function. When the padlock is in the initial locked state, when the user presses the button 4, as the button 4 moves downward, the limit ring 7 moves synchronously until it reaches the position against the unlocking plate 2. In this process, due to the downward movement of the button 4, the column 41 also moves downward accordingly, so that the positioning arm 17, with its own elasticity, is connected with the positioning groove 16 located in the middle. This dynamic position switching not only reflects the exquisite coordination between the mechanical structures, but more importantly, it accurately locates the position of the button 4 after the pressing operation again, ensuring that the subsequent unlocking actions or other mechanical interactions that may be involved can be carried out in an orderly manner based on the accurate button position, avoiding the unlocking failure or other mechanical failures caused by inaccurate button position.

[0067] A straight-shaped operating slot 18 is provided on the upper side of the cap body 42. This design is to adapt to daily tools. When the cap body 42 needs to be rotated, such as in the password change process, the user only needs to insert a common straight-shaped screwdriver into the operating slot 18 to easily rotate the cap body 42, which greatly reduces the difficulty of manual rotation operation, improves the operation accuracy, and makes delicate operations such as password change more convenient.

[0068] The device further includes a pushing portion 19 for pushing the column 41 to move upward.

[0069] On the lower side wall of the housing 1, there is a connecting seat 20 connected to the cylinder 41 (the connecting column 12 is located at the center of the connecting seat 20), and this structure ensures the connection stability between the cylinder 41 and the housing 1. On the front and rear side walls of the connecting seat 20, there are respectively slotted openings 21, and the pushing part 19 and the positioning arm 17 are respectively arranged corresponding to the slotted openings 21 on the front and rear sides. In this way, when the pushing part 19 and the positioning arm 17 perform their respective functions, they can smoothly cooperate with other components inside the housing 1 through the slotted openings 21, avoiding interference between components, optimizing space utilization, and ensuring the smoothness of mechanical actions.

[0070] It further includes a reset plate 22 that can move back and forth, and the pushing part 19 is fixedly connected to the reset plate 22. This means that when the reset plate 22 moves downward, it will, by virtue of its own mechanical transmission effect, drive all the pushing parts 19 to move downward simultaneously, and then drive all the keys 4 to move forward simultaneously. This "one action triggers a chain reaction" linkage mechanism greatly simplifies the operation process, enabling the padlock to quickly and synchronously respond to operation instructions in multiple links such as unlocking, locking, and code changing, improving the user experience and enhancing the overall functionality of the padlock.

[0071] It further includes a series connection bar 23 fixedly connected to the housing 1, and the positioning arm 17 is fixedly connected to the series connection bar 23. The existence of the series connection bar 23 is like an invisible bond that tightly connects multiple positioning arms 17 together. It ensures the stability of the positioning arm 17, preventing it from displacing or loosening during frequent elastic abutting actions, and guaranteeing the accuracy of positioning the up and down positions of the key 4.

[0072] Inside the housing of the padlock, springs that apply elastic force forward are respectively provided for the unlocking plate 2 and the reset plate 22. These two springs each undertake a crucial mission and become one of the power sources for driving the padlock to operate orderly.

[0073] Regarding the spring acting on the unlocking plate 2, it continuously provides forward elastic force for the unlocking plate 2, always ready to push the unlocking plate 2 forward. A locking mechanism cooperating with the lock beam is arranged on the front side of the unlocking plate 2. This locking mechanism is like a solid barrier that firmly controls the locking state of the lock beam. Only when the unlocking plate 2 receives the correct unlocking instruction and moves forward overcoming the resistance can it trigger the locking mechanism to release the locking of the lock beam, enabling the lock beam to move freely and achieve the unlocking action. This mechanism ensures that the lock beam is firmly locked when the unlocking conditions are not met, guaranteeing the security of the padlock.

[0074] Meanwhile, another spring acting on the reset plate 22 is also indispensable. When the lock beam moves backward under pressure, during the backward movement, it can accurately drive the reset plate 22 to move backward. Since the reset plate 22 and the key 4 are tightly connected through the pushing part 19, the backward movement of the reset plate 22 will further drive all the keys 4 to reset. This realizes the automatic reset of each component of the padlock in the closed state, making full preparations for the next unlocking or code-changing operation. It not only simplifies the user operation but also ensures the stability of the mechanical structure of the padlock, keeping it in a good working state all the time. After the reset is completed, the reset plate 22 moves forward and returns to its original position under the action of the spring.

[0075] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. An unlocking and code changing structure of a mechanical key password padlock, comprising a housing, an unlocking plate that can move forward and backward is provided in the housing, a movable groove is provided on the unlocking plate, a key that can move up and down and rotate circumferentially is connected to the housing, and the key is located in the movable groove, characterized in that: A protruding lock hook 1 is provided on the left and right sides of the key respectively, and the two lock hooks 1 are arranged at intervals in the axial direction of the key, and a protruding lock hook 2 is provided on one side wall of the movable groove; An annular limiting ring is arranged at the upper end of the key, the outer diameter of the limiting ring is larger than the width of the moving groove, and a code changing groove for the limiting ring to enter is arranged on the unlocking plate; The upper side wall of the shell is provided with a hole for the key to pass through, the upper side wall of the shell is provided with an anti-rotation arm extending downward, and the limiting ring is provided with an anti-rotation groove corresponding to the anti-rotation arm; When the padlock is in the locked state, the code change slot is located at the rear side of the button. At this time, the button can only move downward to the position where the limit ring and the unlocking plate are against each other. At this time, the anti-rotation arm is still in the anti-rotation slot and the button cannot rotate; When the padlock is in the unlocked state, the unlocking plate has moved forward, the code change slot corresponds coaxially with the button, the button moves downward, and when the limit ring enters the code change slot, the anti-rotation arm is separated from the anti-rotation slot, and the button can rotate.

2. The unlocking and code changing structure of a mechanical key combination padlock according to claim 1, characterized in that: The button comprises a column and a cap body, the cap body and the column are fixed in the circumferential direction and connected in an axial sliding manner, and a limiting ring is arranged on the cap body.

3. The unlocking and code changing structure of a mechanical key combination padlock according to claim 2, characterized in that: A return spring is arranged between the cap body and the column body.

4. The unlocking and code changing structure of a mechanical key combination padlock according to claim 2, characterized in that: A connecting column connected to the column is arranged on the lower side wall of the shell, a corresponding connecting hole is arranged on the column, a protruding limiting portion is arranged on the side wall of the connecting column, and a fan-shaped limiting groove is arranged on the side wall of the connecting hole.

5. The unlocking and code changing structure of a mechanical key combination padlock according to claim 2, characterized in that: The lower end of the column is provided with three annular positioning grooves which are spaced apart in the axial direction of the column, and the housing is provided with positioning arms connected with the positioning grooves.

6. The unlocking and code changing structure of a mechanical key combination padlock according to claim 2, characterized in that: An operating groove is arranged on the upper side surface of the cap body.

7. The unlocking and code changing structure of a mechanical key combination padlock according to claim 5, characterized in that: The utility model also comprises a pushing part for pushing the column to move upward.

8. The unlocking and code changing structure of a mechanical key combination padlock according to claim 7, characterized in that: A connecting seat connected to the column is arranged on the lower side wall of the shell, and slots are arranged on the front and rear sides of the connecting seat respectively, and the pushing part and the positioning arm are arranged corresponding to the slots on the front and rear sides respectively.

9. The unlocking and code changing structure of a mechanical key combination padlock according to claim 8, characterized in that: It also includes a reset plate which can move forward and backward, the pushing part is fixedly connected to the reset plate, and it also includes a series connection bar which is fixedly connected to the shell, and the positioning arm is fixedly connected to the series connection bar.

10. The unlocking and code changing structure of a mechanical key combination padlock according to claim 1, characterized in that: The movable grooves are provided in plurality and are arranged at intervals in the left-right direction, and each movable groove is provided with two buttons.

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