A code-changeable key-operated padlock

Abstract

The present invention proposes a code-changeable button-type padlock, which includes a shell and a U-shaped lock beam, and a connecting hole on the upper side of the shell is adapted to the two ends of the lock beam. The concave locking grooves at the two ends of the lock beam correspond to the movable locking part in the shell, and the spring makes the locking part fit tightly in the locking groove to form a double-sided locking, which is strong in resistance to external forces. There is an unlocking plate that can be moved up and down in the shell, and its upper end limiting part cooperates with the locking part to limit unlocking; there is also a connecting seat and a button that can be moved forward and backward, and the front end of the button extends out of the shell. There is a locking block on the left wall of the unlocking plate slot, and the locking block is linked with the button locking block. The code-changing plate is on the rear side of the unlocking plate, and the locking block is controlled by the extrusion part and the moving hole of the extension part, and the password switching is realized by means of the locking bead and the positioning groove. The return plate is on the rear side of the code-changing plate and can drive the button to return. This padlock has high safety, double-sided locking to prevent illegal opening; it is convenient, and the button operation does not require key insertion and removal. When changing the code, the unlocking can be rotated 180 degrees and pressed, without tools, and is suitable for multiple scenarios.

Description

Technical Field

[0001] The invention relates to the technical field of password locks, and in particular to a code-changeable key-press type padlock. Background Art

[0002] In today's society, padlocks are a common security tool and are widely used in various fields to protect the safety of personal property, public facilities and various storage devices. Mechanical button padlocks, with their unique password unlocking method, provide users with a more convenient operating experience compared to traditional key unlocking padlocks. There is no need to carry keys, just remember the password and enter the correct password sequence by pressing the button to easily unlock and lock the padlock, which greatly meets people's dual needs for convenience and security in different scenarios.

[0003] With the advancement of technology and the accelerated pace of people's lives, users have increasingly stringent requirements for the functionality of padlocks. Although some existing mechanical button padlocks can realize the basic password unlocking function, they have significant defects in password management. Many of these padlocks often require special tools to complete the operation when the initial password is set or the password needs to be changed later. For example, some brands of padlocks require users to use a special screwdriver to unscrew the screws on the back of the lock body, open the complex internal mechanical structure, and then set a new password by adjusting a series of small gears or paddle positions. The operation process is not only cumbersome and complicated, but also time-consuming. For ordinary users, it is almost difficult to complete the password change by themselves when they lack the corresponding professional knowledge and tools. This leads to the problem of inconvenience in modifying the existing padlock password in actual use scenarios. If the user forgets the password or needs to change the password frequently due to security needs, such as in shared storage facilities, logistics turnover boxes, employee lockers, etc., where multiple people share or frequently change users, the problem of inconvenience in modifying the existing padlock password is particularly prominent, which brings great trouble to users, seriously affects the practicality and efficiency of padlocks, and is difficult to adapt to modern diversified security needs.

[0004] In summary, the current field of mechanical button padlocks urgently needs a new type of padlock that can conveniently and autonomously perform password change operations to fill the functional shortcomings of existing products and improve user experience. Summary of the invention

[0005] In view of the problems pointed out in the background technology, the present invention proposes a code-changeable button-type padlock to solve the above technical problems.

[0006] The technical solution of the present invention is achieved in this way:

[0007] A code-changeable key-operated padlock comprises a housing,

[0008] The housing is provided with an unlocking plate and a code changing plate which can move up and down, and a second spring and a third spring which respectively exert upward elastic force on the unlocking plate and the code changing plate, and the code changing plate is located at the rear side of the unlocking plate;

[0009] The unlocking plate is provided with a slot 1, and a button which can move forward and backward is provided in the slot 1;

[0010] A locking block that can move forward and backward is connected to the left wall of the slot one, a through slot that runs through the upper and lower sides of the locking block is provided on the right side of the locking block, and a locking block corresponding to the through slot is provided on the left side of the key;

[0011] Two positioning grooves are arranged at intervals on the left side of the lock block, and a movable hole corresponding to and communicating with the positioning grooves is arranged on the unlocking plate, and the movable hole runs through the left side of the unlocking plate;

[0012] The code-changing plate is provided with a second slot corresponding to the first slot, and a protruding extrusion portion is provided on the left side wall of the second slot, and the extrusion portion can block the left side of the moving hole;

[0013] A spherical locking bead is connected in the moving hole and the positioning groove, and the sum of the lengths of the moving hole and the positioning groove is equal to the diameter of the locking bead; the distance between the left side wall of the second slot and the left side of the moving hole is smaller than the diameter of the locking bead.

[0014] The present invention is further configured that a return plate that can move up and down and a spring four that applies upward elastic force to the return plate are provided in the shell, the return plate is located on the rear side of the code change plate, and a driving part corresponding to the key is provided on the return plate. When the return plate moves downward, the driving part can drive the key to move forward.

[0015] The present invention is further configured such that a rotatable U-shaped lock beam is connected to the upper end of the shell; when the lock beam is in a locked state, the lock beam is pressed downward, and the lock beam can drive the unlocking plate, the code changing plate, and the return plate to move downward; after the lock beam is unlocked, and only after the lock beam is rotated 180 degrees, the lock beam can be pressed downward to move, at which time, the downward movement of the lock beam can drive the code changing plate to move downward, and the code changing plate then drives the return plate to move downward.

[0016] The present invention is further configured such that three slots are provided, the three slots are spaced apart in the left-right direction, three buttons are provided in each slot, the three buttons in the same slot are spaced apart up and down, and the buttons in different slots are correspondingly provided on the left and right.

[0017] The present invention is further configured such that concave locking grooves are respectively provided on the facing surfaces at both ends of the lock beam; locking parts corresponding to the two locking grooves are respectively provided in the shell, and the locking parts can move left and right, and a spring is provided in the shell to apply elastic force to the locking parts to move toward the corresponding locking grooves, and the upper and lower sides of the contact end of the locking part and the lock beam are both inclined surfaces.

[0018] The present invention is further configured such that the upper end of the unlocking plate is provided with limiting parts respectively corresponding to the two locking parts, the limiting part is located between the two locking parts, and in the left and right directions, the distance from the limiting part to the corresponding locking part gradually increases from top to bottom.

[0019] The present invention is further configured such that a connecting seat is provided on the inner side surface of the rear side wall of the shell, the button is slidably connected to the connecting seat front and back, and the front end of the button extends from the front side surface of the shell; an entry groove is provided on the upper side wall of the connecting seat that runs through the inside and outside of the connecting seat, and the driving part is arranged corresponding to the entry groove.

[0020] The present invention is further configured such that the cross section of the locking block is T-shaped, the unlocking plate is provided with a slide groove one that is adapted to and slidably connected to the locking block, the slide groove one is connected to the slot one, the slide groove one passes through the unlocking plate, and the movable hole is connected to the slide groove one.

[0021] The present invention is further configured such that an installation groove is provided on the lower side wall of the connecting seat and runs through the inside and outside of the connecting seat, a positioning strip is installed in the installation groove, the positioning strip is provided with a positioning protrusion protruding into the connecting seat, and the button is provided with a positioning groove corresponding to the positioning protrusion, and two positioning grooves are provided, and the two positioning grooves are spaced apart in the front-to-back direction.

[0022] The present invention is further configured such that a protruding limiting portion is provided at the right end of the lock beam along its radial direction. When the lock beam is in a locked state, the limiting portion protrudes forward. A connecting groove corresponding to the right end of the lock beam is provided in the shell body. The connecting groove is opened forward, and a widened groove extending backward is provided on the rear side wall of the connecting groove.

[0023] By adopting the above technical solution, the beneficial effects of the present invention are as follows:

[0024] In terms of security, it adopts a double-sided locking design. The locking grooves at both ends of the lock beam fit closely with the movable locking part in the shell. Under the action of the spring force, the locking part can be firmly embedded in the locking groove. Compared with the traditional single-sided locking padlock, it greatly enhances the ability to resist external force damage, effectively prevents illegal opening, and provides more reliable protection for property safety.

[0025] The convenience is outstanding. When unlocking, the user only needs to press the corresponding button, and use the mechanical structure to drive the unlocking plate and other components to work together, so that the lock can be easily unlocked without complicated key insertion and extraction operations. This is especially advantageous in scenarios where it is inconvenient to take the key with both hands or it is difficult to aim at the keyhole due to poor light. Moreover, the code change function is even more convenient and efficient. When the password needs to be changed, the lock beam is rotated 180 degrees after unlocking and pressed, which can drive the code change plate and other components to work together, quickly clear the original password, and enter the state where the code can be reset. No additional tools are required, and the password can be changed anytime and anywhere as needed, adapting to various usage scenarios such as shared equipment and temporary storage.

[0026] The fault-tolerant design is considerate. If the user accidentally presses the wrong button, the button can be quickly returned to its original position by pressing down the lock beam and using the return plate, and the correct password can be re-entered. This avoids long-term unlocking obstruction due to misoperation and greatly improves the user's operating experience.

[0027] In addition, the components are precisely matched, and the shell not only protects the internal parts, but its reasonable internal layout provides precise guidance for the movement of each component, ensuring the long-term and stable operation of the padlock, reducing the probability of failure, and reducing maintenance costs, thus meeting modern security and daily use needs in many aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0029] Figure 1 It is a schematic diagram of the exploded view of the padlock cover and the lock beam of the present invention.

[0030] Figure 2 It is a schematic diagram of the front structure of the hidden cover body of the present invention.

[0031] Figure 3 It is a schematic diagram of the structure of the unlocking plate, button and locking block of the present invention.

[0032] Figure 4 For the present invention Figure 3 AA section view.

[0033] Figure 5 It is an exploded schematic diagram of the unlocking plate, button and locking block of the present invention.

[0034] Figure 6 It is a structural schematic diagram of the connection between the unlocking plate, the code changing plate and the button of the present invention.

[0035] Figure 7 It is a structural schematic diagram of the code conversion plate of the present invention connected in the shell.

[0036] Figure 8 It is a schematic diagram of the structure in which the return plate of the present invention is connected inside the housing.

[0037] Fig. 9 This is a schematic diagram of the structure of the unlocking state, the unlocking plate, the code changing plate and the button connection of the present invention.

[0038] Fig.10 It is a structural schematic diagram of the connection between the button, the locking block and the locking bead of the present invention.

[0039] Fig.11 It is a schematic diagram of the structure of the housing and the positioning strip of the present invention.

[0040] Fig.12 It is a structural schematic diagram of the unlocking plate of the present invention.

[0041] Fig.13 It is a structural schematic diagram of the code conversion board of the present invention.

[0042] Fig.14 It is a schematic structural diagram of the return plate of the present invention.

[0043] Fig.15 It is a schematic structural diagram of the locking beam and the locking part of the present invention.

[0044] Fig.16 The structure of the lock beam after unlocking and rotating 180 degrees is shown in FIG. Figure 1 .

[0045] Fig.17 The structure of the lock beam after unlocking and rotating 180 degrees is shown in FIG. Figure 2 .

[0046] Description of the numbers in the accompanying drawings: shell 1, lock beam 2, locking groove 3, locking part 4, spring one 5, unlocking plate 6, limiting part 7, spring two 8, slot one 9, connecting seat 10, button 11, locking block 12, through groove 13, locking block 14, extension part 15, positioning groove 16, moving hole 17, code change plate 18, slot two 19, extrusion part 20, spring three 21, locking bead 22, return plate 23, spring four 24, driving part 25, entry groove 26, slide groove one 27, installation groove 28, positioning strip 29, positioning protrusion 30, positioning groove 31, limiting part 32, connecting groove 33, widening groove 34, stabilizing column 35, stabilizing part 36, sliding part 37, connecting strip 38, cover body 39. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] For reference Figure 1-Figure 17 The present invention is described:

[0049] The code-changeable button padlock involved in the present invention is mainly composed of a housing 1, a U-shaped lock beam 2 and a series of precisely matched internal components. The housing 1, as the external support structure of the entire padlock, not only provides protection for the internal components, but also carries the installation and movement guidance functions of various components. The upper two sides are provided with connection holes that are precisely matched with the left and right ends of the lock beam 2 to ensure that the lock beam 2 can flexibly rotate around the central axis of the right end. This rotation characteristic is the basis for realizing the unlocking and locking actions.

[0050] Concave locking grooves 3 are respectively provided on the facing surfaces at both ends of the lock beam 2. The openings of the two locking grooves 3 are arranged facing each other, and the lower side walls of the locking grooves 3 are inclined surfaces. The inclined surface plays a key guiding role in the subsequent locking and unlocking process. Corresponding to this is the locking portion 4 in the shell, which can move left and right, and relies on the elastic force applied to the locking groove 3 by the spring 5 to always maintain a locking posture. The upper and lower sides of the contact end of the locking portion 4 and the lock beam 2 are also inclined surfaces, and the overall structure is a conical structure. This design allows the inclined surfaces of the two to interact with each other when the lock beam 2 moves up and down, and can cleverly drive the locking portion 4 to move away from the lock beam 2 using the principle of mechanics, so as to achieve accurate switching of locking and unlocking actions.

[0051] A locking part 4 corresponding to the two locking grooves 3 is provided in the shell 1, and the locking part 4 can move left and right. A spring 5 is provided in the shell 1 to apply elastic force to the locking part 4 to move toward the corresponding locking groove 3. The upper and lower sides of the contact end of the locking part 4 and the lock beam 2 are both inclined surfaces, and the contact end of the locking part 4 and the lock beam 2 forms a conical structure.

[0052] When the lock beam 2 is in the locked state, the locking portion 4 is tightly embedded in the locking groove 3 under the elastic force of the spring 1 5, thus preventing the left end of the lock beam 2 from being disengaged and unlocked. The two ends of the lock beam 2 are locked by the two locking portions 4, which can form a more stable locking state than single-side locking. Double-side locking greatly enhances the stability of the padlock and effectively improves the security performance.

[0053] When unlocking, the lock beam 2 moves upward. Due to the guidance of the inclined surface, the lock beam 2 will squeeze the locking part 4, forcing it to overcome the elastic force of the spring 1 5 and move away from the lock beam 2, and the spring 1 5 is compressed. Once the left end of the lock beam 2 passes over the locking part 4, the lock is released and unlocking is achieved. Subsequently, the locking part 4 returns to its original position under the rebound action of the spring 1 5, ready for the next locking.

[0054] The locking process is similar. The lock beam 2 moves downward and squeezes the locking part 4 again to make it move away. When the lock beam 2 moves to the locking groove 3 and the locking part 4 accurately corresponds, the spring 1 5 pushes the locking part 4 to quickly enter the locking groove 3 to complete the locking operation.

[0055] The conical inclined surface of the locking portion 4 and the inclined surface of the lower side wall of the locking groove 3 enable the inclined surfaces to form a guiding structure to drive the locking portion 4 to move away from the locking beam 2 during the upward and downward movement of the locking beam 2 .

[0056] An unlocking plate 6 that can move up and down is provided in the shell 1, and a limiting portion 7 corresponding to the two locking portions 4 is provided at the upper end of the unlocking plate 6. The limiting portion 7 is located between the two locking portions 4. In the left and right directions, the distance from the limiting portion 7 to the corresponding locking portion 4 gradually increases from top to bottom. A spring 8 that applies an upward elastic force to the unlocking plate 6 is provided in the shell 1.

[0057] In the initial state, that is, when the lock beam 2 is locked, the upper end of the limiting portion 7 corresponds to the locking portion 4. At this time, the limiting portion 7 can effectively prevent the locking portion 4 from moving away from the lock beam 2, thereby preventing the lock beam 2 from moving upward, thereby limiting the unlocking action and ensuring that the lock can be unlocked only when the password is correctly entered.

[0058] When the limiting portion 7 moves upward and the lower end of the limiting portion 7 corresponds to the locking portion 4, a moving space is formed between the limiting portion 7 and the locking portion 4. At this time, the locking portion 4 can move away from the lock beam 2 and can be unlocked.

[0059] The unlocking plate 6 is provided with three slots 9, the slots 9 are arranged along the up-down direction, and the three slots 9 are arranged at intervals in the left-right direction.

[0060] A connection seat 10 is provided on the inner side of the rear side wall of the housing 1. The connection seat 10 is arranged corresponding to the slot 9. The connection seat 10 is located in the slot 9. A button 11 that can move forward and backward is connected to the connection seat 10. The front end of the button 11 extends from the front side of the housing 1. Three connection seats 10 are provided in each slot 9. The three connection seats 10 in the same slot 9 are arranged at intervals up and down, and the connection seats 10 in different slots are arranged correspondingly on the left and right. The connection seat 10 has a connection cavity that is opened forward, and the rear end of the button 11 is connected to the connection cavity.

[0061] Arabic numerals are arranged on the front side of the button 11, and the button 11 is used as a password button. By pressing the buttons 11 in a specific order, the password input function is realized.

[0062] A locking block 12 that can move forward and backward is slidably connected to the left side wall of the slot 19. A through slot 13 that runs through the upper and lower sides of the locking block 12 is provided on the right side surface. A locking block 14 corresponding to the through slot 13 is provided on the button 11.

[0063] When the lock beam 2 is in the locked state, under the action of the second spring 8, the upper end of the unlocking plate 6 abuts against the lock beam 2, and the upper end of the limiting portion 7 is spaced apart from the upper side wall of the housing 1 to form a space that can move upward. At this time, the upper end of the limiting portion 7 corresponds to the locking portion 4, and the lower end of the unlocking plate 6 is spaced apart from the lower side wall of the housing 1 to form a space that can move downward. At this time, the second spring 8 is in a compressed state, and the locking block 12 is located at the lower side of the corresponding locking block 14. When the locking block 14 corresponds to the position of the through slot 13 up and down, the unlocking plate 6 can move upward under the action of the second spring 8. When the locking block 14 is misaligned with the position of the through slot 13 up and down, the locking block 14 forms a blockage to the locking block 12, and the unlocking plate 6 cannot move upward. At this time, it is necessary to press the button 11 to move the locking block 14 to the position corresponding to the through slot 13 to achieve unlocking.

[0064] The unlocking plate 6 on the left side of the slot 19 extends an extension portion 15 backwards, and two positioning slots 16 are provided on the left side surface of the lock block 12, and the two positioning slots 16 are arranged at intervals in front and back. A moving hole 17 corresponding to and connected to the positioning slot 16 is provided on the extension portion 15, and the moving hole 17 passes through the left side of the extension portion 15. A spherical locking bead 22 is connected in the moving hole 17 and the positioning slot 16 (the positioning slot 16 is a hemispherical structure adapted to the locking bead 22). In the left and right directions, the length of the moving hole 17 and the positioning slot 16 is greater than or equal to the diameter of the locking bead 22, the length of the moving hole 17 is less than the diameter of the locking bead 22, and the length of the positioning slot 16 is less than the diameter of the locking bead 22. When the locking bead 22 is located in the positioning slot 16 and the moving hole 17, the lock block 12 cannot move forward and backward.

[0065] In the initial state, the extrusion portion 20 blocks the movable hole 17 so that the locking bead 22 can only be located in the positioning groove 16 and the movable hole 17, and the locking block 12 cannot move forward and backward, thereby ensuring the stability of the password state.

[0066] A code-changing plate 18 which can move up and down is provided in the shell 1. The code-changing plate 18 is located at the rear side of the unlocking plate 6. A second slot 19 corresponding to the first slot 9 is provided on the code-changing plate 18. The extension portion 15 is located in the corresponding second slot 19. A protruding extrusion portion 20 is provided on the left side wall of the second slot 19. The extrusion portion 20 is arranged corresponding to the moving hole 17. The extrusion portion 20 is arranged against the left side surface of the extension portion 15. A spring three 21 for applying an upward elastic force to the code-changing plate 18 is provided in the shell 1.

[0067] When the extrusion portion 20 corresponds to the position of the moving hole 17 , the extrusion portion 20 blocks the moving hole 17 , the locking bead 22 can only be located in the positioning groove 16 and the moving hole 17 , and the locking block 12 cannot move forward or backward.

[0068] The distance between the left side wall of the second slot 19 and the left side surface of the extension portion 15 is smaller than the diameter of the locking bead 22 , so as to prevent the locking bead 22 from escaping from the left side of the moving hole 17 .

[0069] When the code-changing plate 18 moves downward and the extrusion portion 20 is misaligned with the movable hole 17 (the extrusion portion 20 no longer blocks the movable hole 17), the locking block 12 can move forward and backward. When the locking block 12 moves, it will drive the locking bead 22 to leave the positioning groove 16 (the positioning groove 16 is a hemispherical structure adapted to the locking bead 22), and the locking bead 22 enters the movable hole 17 and the area between the left side wall of the second slot 19 and the left side surface of the extension portion 15.

[0070] When the lock beam 2 is in the locked state, under the action of the spring 3 21, the upper end of the code-changing plate 18 abuts against the lock beam 2, and the lower end of the code-changing plate 18 is spaced from the lower side wall of the housing 1 to form a space for downward movement. The code-changing plate 18 is in a state corresponding to the position of the moving hole 17, and the extrusion portion 20 forms a blockage for the moving hole 17.

[0071] A return plate 23 that can move up and down is provided in the shell 1. The return plate 23 is located on the rear side of the code switching plate 18. A spring four 24 is provided in the shell 1 to apply an upward elastic force to the return plate 23. Under the action of the spring four 24, the upper end of the return plate 23 is abutted against the shell 1. A driving part 25 corresponding to the connecting seat 10 is provided on the return plate 23. An entry groove 26 that runs through the inside and outside of the connecting seat 10 is provided on the upper side wall of the connecting seat 10. The driving part 25 is arranged corresponding to the entry groove 26. When the return plate 23 moves downward, the driving part 25 enters the connecting seat 10 through the entry groove 26 and drives the button 11 to move forward.

[0072] When the lock beam 2 is in the locked state, the upper end of the return plate 23 is spaced apart from the lock beam 2, and the upper end of the code-changing plate 18 is provided with a hook 181 extending backwards, which is located on the upper side of the return plate 23 and spaced apart from the return plate 23. When the code-changing plate 18 moves downward, the return plate 23 is pulled downward by the hook 181.

[0073] The lock block 12 has two states, one state is a code setting state for setting a password, and the other state is a blank code state for not setting a password.

[0074] When the locking block 12 is in the empty code state, the locking bead 22 is located in the positioning groove 16 of the rear side. When the locking block 12 is in the code setting state, the locking bead 22 is located in the positioning groove 16 of the front side.

[0075] The button 11 has two states, one is a pop-up state moving forward, and the other is a retracted state moving backward.

[0076] When the lock beam 2 is in the locked state, the lock beam 2 is pressed downward, and the lock beam 2 can drive the unlocking plate 6 and the code changing plate 18 to move downward at the same time, and the hook 181 then pulls the return plate 23 to move downward. In this process, all the buttons 11 are driven forward by the driving part 25, and all the buttons 11 move to the pop-up state.

[0077] When the lock beam 2 is in the locked state, the through slot 13 on the lock block 12 in the coding state and the lock block 14 on the button 11 are in a misaligned state, and the lock block 14 is located on the upper side of the lock block 12. At this time, the unlocking plate 6 cannot move upward. The upper end of the limiting portion 7 at the upper end of the unlocking plate 6 corresponds to the locking portion 4, and the limiting portion 7 can prevent the locking portion 4 from moving away from the lock beam 2. At this time, the lock beam 2 cannot move upward and cannot be unlocked.

[0078] At this time, if unlocking is required, the button 11 corresponding to the lock block 12 in the coding state needs to be pressed, and the button 11 moves backwards. The button 11 moves to the retracted state. At this time, the locking block 14 on the button 11 and the through slot 13 on the lock block 12 are in a corresponding state, and the unlocking plate 6 can move upward. The limiting part 7 moves upward, and the lower end of the limiting part 7 corresponds to the locking part 4. A moving space is formed between the limiting part 7 and the locking part 4. At this time, the locking part 4 can move away from the lock beam 2 and can be unlocked.

[0079] When the locking block 12 is in the empty code state, the button 11 is in the pop-up state, and the locking block 14 on the button 11 and the passing slot 13 on the locking block 12 are in corresponding states.

[0080] When the locking block 12 is in the empty code state, the button 11 is in the retracted state, and the locking block 14 on the button 11 and the passing slot 13 on the locking block 12 are in a misaligned state.

[0081] When the locking block 12 is in the coding state, the button 11 is in the pop-up state, and the locking block 14 on the button 11 and the passing slot 13 on the locking block 12 are in a misaligned state.

[0082] When the locking block 12 is in the coding state, the button 11 is in the retracted state, and the locking block 14 on the button 11 and the through slot 13 on the locking block 12 are in corresponding states.

[0083] The lock can only be unlocked by pressing the button 11 corresponding to the lock block 12 in the coding state. If the button 11 corresponding to the lock block 12 not in the coding state is pressed, the lock cannot be unlocked. After pressing the wrong button 11, the lock beam 2 can be pressed downward, the return plate 23 moves downward, and the button 11 is driven forward by the driving unit 25, and then the correct password is re-entered.

[0084] The lock beam 2 is unlocked and in an unlocked state: the unlocking plate 6 moves upward to the upper end of the limiting portion 7 and abuts against the upper side wall of the housing 1, and the locking block 14 on the button 11 is located in the through slot 13 on the locking block 12. The extrusion portion 20 is in a state corresponding to the position of the moving hole 17, and the extrusion portion 20 forms a blockage for the moving hole 17.

[0085] After the lock beam 2 is unlocked, and only after the lock beam 2 rotates 180 degrees, the lock beam 2 can be pressed to move downward. At this time, the lock beam 2 moves downward to drive the code change plate 18 to move downward (after the code change plate 18 moves downward, the extrusion part 20 and the moving hole 17 are misaligned, and the lock block 12 can move forward and backward at this time). The code change plate 18 then drives the return plate 23 to move downward through the hook 181, and the return plate 23 drives all the buttons 11 to move forward through the driving part 25. At the same time, the button 11 drives the lock block 12 to move forward, so that the lock block 12 in the code setting state enters the empty code state. Through the above operation, all the lock blocks 12 in the code setting state can be moved to the empty code state at once. And at this time, a new password can be reset. At this time, pressing the corresponding button 11 is to set the corresponding password. After resetting the password, the lock beam 2 rotates 180 degrees, and the lock beam 2 moves downward again into the housing 1. The lock beam 2 drives the unlocking plate 6 to move downward alone, and the lock block 12 moves to the lower side of the locking block 14.

[0086] By adopting the above technical solution, when resetting the password, the lock beam 2 only needs to be rotated 180 degrees in the unlocked state and the lock beam 2 is pressed downward to clear the set password, and then the button 11 is pressed to set a new password. The operation is simple and convenient.

[0087] The steps to change your password are as follows:

[0088] First, make sure that the lock beam 2 is in the unlocked state, which is a prerequisite for starting the code change process. Next, rotate the unlocked lock beam 2 180 degrees. Then, press the lock beam 2 downward, and this action will drive the code change plate 18 to move downward. Since the extrusion portion 20 on the code change plate 18 and the moving hole 17 of the extension portion 15 of the unlocking plate 6 are originally in a corresponding blocking state, when the code change plate 18 moves downward, the extrusion portion 20 and the moving hole 17 are misaligned and no longer blocked, allowing the lock block 12 to move forward and backward. During the movement of the lock block 12, the locking bead 22 will be driven to leave the positioning groove 16 and enter the area between the moving hole 17 and the left side wall of the slot 2 19 and the left side surface of the extension portion 15, thereby releasing the restriction on the lock block 12. At this time, all lock blocks 12 in the code setting state will all move to the empty code state under the action of the relevant structure, ready for setting a new password. (The return plate 23 moves downward, the drive unit 25 drives the button 11 to move forward, and the button 11 drives the lock block 12 to move forward through the locking block 14)

[0089] After completing the above operations, you can reset the new password. The user only needs to press the corresponding button 11, the button 11 moves backward, and drives the lock block 12 to move backward to complete the setting of the new password. After the new password is set, rotate the lock beam 2 180 degrees again to restore it to its initial direction, and then move the lock beam 2 downward to allow it to enter the housing 1. At this time, the lock beam 2 will drive the unlocking plate 6 to move downward alone, driving the lock block 12 to move to the lower side of the lock block 14. At this point, the new password is set and takes effect, and the new password can be used for unlocking operations later. The entire code change process does not require the use of additional tools, the operation is simple and convenient, and can well meet the user's needs for password updates in different scenarios.

[0090] When unlocking, if the wrong password is pressed accidentally, the user only needs to press down the lock beam 2. During the process of the lock beam 2 being forced to move downward, a series of internal structures will be driven to work together. Since the lock beam 2 is mechanically related to the return plate 23, when the lock beam 2 is pressed down, the return plate 23 will be driven to move downward. The driving part 25 set on the return plate 23 plays a key role at this time. It will enter the inside of the connecting seat 10 through the entry slot 26 on the connecting seat 10 and drive the button 11 to move forward. This action restores all the buttons 11 to the initial pop-up state, which is equivalent to clearing the wrong input state with one click, and preparing for re-entering the correct password.

[0091] Then, the user can press the corresponding button 11 again according to the correct password and try to unlock the door again. This design fully considers the possible misoperation of the user in actual operation. By simply pressing the lock beam 2, the user can quickly correct the error and reset the lock, avoiding the dilemma of unlocking due to pressing the wrong password once, greatly improving the fault tolerance and convenience of unlocking the door, and ensuring a smoother use process.

[0092] When unlocking, there is no order for password input.

[0093] The working principle of the code-changeable keypadlock in this application is as follows:

[0094] 1. Locking principle

[0095] The lock beam 2 is U-shaped, and its left and right ends are adapted to the holes on the upper side of the shell 1, and can rotate around the central axis of the right end. Concave locking grooves 3 are provided on the opposite surfaces of the two ends of the lock beam 2, and the lower side wall is an inclined surface. A corresponding locking part 4 that can move left and right is provided in the shell, and a spring 5 applies an elastic force to it to move toward the locking groove 3. The contact end of the locking part 4 and the lock beam 2 also has a conical inclined surface structure. When the lock beam 2 is in the locked state, under the action of the spring 5, the locking part 4 is embedded in the locking groove 3 to prevent the left end of the lock beam 2 from falling out, and the double-sided locking ensures stability.

[0096] 2. Unlocking Principle

[0097] When unlocking, the user presses the corresponding button 11 (as a password button, which is marked with Arabic numerals). The button 11 is located in the connecting seat 10 corresponding to the slot 19 of the unlocking plate 6 and can move forward and backward. The locking block 12 on the left side wall of the slot 19 is provided with a through slot 13, and the button 11 is provided with a locking block 14. In the initial locking state, the spring 28 makes the upper end of the unlocking plate 6 abut against the locking beam 2, and the locking block 12 is on the lower side of the locking block 14. The two are misaligned to limit the upward movement of the unlocking plate 6. When the password is pressed, the corresponding button 11 moves backward, and the locking block 14 corresponds to the through slot 13. The unlocking plate 6 moves upward under the action of the spring 28, and the lower end of its upper limit part 7 forms a moving space with the locking part 4. The locking beam 2 moves upward to drive the locking part 4 away, thereby achieving unlocking.

[0098] 3. Code conversion principle

[0099] When changing the code, first unlock the lock beam 2 and rotate it 180 degrees before pressing it down, driving the code changing plate 18 to move down. The extrusion part 20 on the code changing plate 18 originally blocked the moving hole 17 of the extension part 15 of the unlocking plate 6, but it is no longer blocked after moving down. The lock block 12 can move forward and backward, driving the locking bead 22 to shift, so that the code setting state lock block 12 changes to the empty code state. At the same time, the hook 181 of the code changing plate 18 pulls the return plate 23 downward, and the driving part 25 (the lower end of the driving part 25 is conical) on the return plate 23 enters the connecting seat 10 through the slot 26 to drive the button 11 forward, clearing the original password setting. Then press the corresponding button 11 to set a new password, rotate the lock beam 2 to reset, and press it back into the shell, and the new password will take effect.

[0100] 4. Error Correction Principle

[0101] If the wrong password is pressed to unlock the padlock, the lock beam 2 is pressed downward to drive the return plate 23 to move downward, and the return plate 23 driving part 25 moves the button 11 forward to the initial pop-up state, so that the correct password can be re-entered, thereby improving fault tolerance. The various components of the entire padlock are closely matched to achieve a multifunctional and convenient operation experience.

[0102] The cross section of the lock block 12 is T-shaped, and the unlocking plate 6 is provided with a slide groove 27 adapted to and slidably connected with the lock block 12, the slide groove 27 is connected with the slot 9, the slide groove 27 passes through the unlocking plate 6 and the extension 15, and the moving hole 17 is connected with the slide groove 27. This layout enables the lock block 12 to move smoothly forward and backward along the slide groove 27 when driven by an external force, and work in coordination with other components.

[0103] The lower side wall of the connection seat 10 is provided with an installation groove 28 that runs through the inside and outside of the connection seat 10. A positioning strip 29 is installed in the installation groove 28. The positioning strip 29 is provided with a positioning protrusion 30 that protrudes into the connection seat 10. The button 11 is provided with a positioning groove 31 that corresponds to the positioning protrusion 30. There are two positioning grooves 31, and the two positioning grooves 31 are arranged at intervals in the front-to-back direction. The positioning protrusion 30 cooperates with the positioning groove 31 to position the button 11 in the pop-up state and the retracted state. It ensures that it can be stably maintained in both states, avoiding the position deviation of the button 11 due to external interference or accidental touch, thereby affecting the accuracy of password input and the normal operation of the entire padlock, greatly improving the stability and reliability of the operation.

[0104] The right end of the lock beam 2 is provided with a protruding limiting portion 32 along its radial direction (the limiting portion 32 can prevent the right end of the lock beam 2 from escaping from the housing 1). When the lock beam 2 is in a locked state, the limiting portion 32 protrudes forward, and a connecting groove 33 corresponding to the right end of the lock beam 2 is provided in the housing 1, and the connecting groove 33 is opened forward (when the lock beam 2 is in a locked state, the limiting portion 32 is located at the open side of the connecting groove 33, and the lock beam 2 can move up and down), and a widened groove 34 extending backward is provided on the rear side wall of the connecting groove 33 (after the lock beam 2 is unlocked and rotated 180 degrees, the limiting portion 32 is located in the widened groove 34, and the lock beam 2 can move up and down). The setting of the limiting portion 32 allows the lock beam 2 to move up and down after it is unlocked and only after it is rotated 180 degrees, or the lock beam 2 can move up and down when it is in a locked state. This ingenious design strictly limits the lock beam 2 to perform code changing and other related operations only at a specific rotation angle, thereby preventing safety hazards caused by misoperation and providing precise mechanical control for the multifunctional use of the padlock.

[0105] A stabilizing column 35 extends downward from the right end of the lock beam 2, and a stabilizing portion 36 is provided in the housing 1 to always keep in contact with the stabilizing column 35. During the frequent up-and-down movement and rotation of the lock beam 2, the close contact between the stabilizing column 35 and the stabilizing portion 36 can effectively disperse the force, reduce the shaking and offset problems of the lock beam 2 due to long-term use, and ensure that the lock beam 2 can accurately cooperate with the internal components every time the lock is opened, closed, or the code is changed, thereby extending the service life of the padlock and improving the user experience.

[0106] The locking part 4 forms a sliding fit with the housing 1 through the sliding part 37, and the spring 1 5 applies elastic force to the sliding part 37. This structural design enables the locking part 4 to respond quickly and accurately to the position change of the lock beam 2 under the drive of the spring 1 5.

[0107] The three positioning strips 29 corresponding to the left and right directions are connected in series through the connecting strip 38, and a groove for installing the connecting strip 38 is provided on the rear side wall of the housing 1. This design enhances the integrity and stability of the positioning strip 29, avoids displacement deviation of a single positioning strip 29 due to uneven force or vibration, and thus ensures that the positioning accuracy of the key 11 is consistent.

[0108] The housing 1 is opened at the front side. A cover 39 is provided at the front side opening of the housing 1 . The cover 39 is provided with a hole for the front end of the button 11 to pass through.

[0109] The return plate 23 can move up and down, and the rear side is restricted by the shell. The driving part 25 is connected to the entry groove 26, and the left and right directions are restricted by the entry groove 26, and the front side is restricted by the code conversion plate 18.

[0110] The code changing plate 18 can move up and down, with the left side of the code changing plate 18 being restricted by the housing, the right side being restricted by the stabilizing portion 36 , the rear side being restricted by the return plate 23 , and the front side being restricted by the unlocking plate 6 .

[0111] The unlocking plate 6 can move up and down, with the left side restricted by the code changing plate 18 through the extension portion 15 , the right side restricted by the locking block 14 on the key 11 , the front side restricted by the cover body 39 , and the rear side restricted by the code changing plate 18 .

[0112] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A code-changeable button-type padlock, comprising a housing, characterized in that: The housing is provided with an unlocking plate and a code changing plate which can move up and down, and a second spring and a third spring which respectively exert upward elastic force on the unlocking plate and the code changing plate, and the code changing plate is located at the rear side of the unlocking plate; The unlocking plate is provided with a slot 1, and a button which can move forward and backward is provided in the slot 1; A locking block that can move forward and backward is connected to the left wall of the slot one, a through slot that runs through the upper and lower sides of the locking block is provided on the right side of the locking block, and a locking block corresponding to the through slot is provided on the left side of the key; Two positioning grooves are arranged at intervals on the left side of the lock block, and a movable hole corresponding to and communicating with the positioning grooves is arranged on the unlocking plate, and the movable hole runs through the left side of the unlocking plate; The code-changing plate is provided with a second slot corresponding to the first slot, and a protruding extrusion portion is provided on the left side wall of the second slot, and the extrusion portion can block the left side of the moving hole; A spherical locking bead is connected in the moving hole and the positioning groove, and the sum of the lengths of the moving hole and the positioning groove is equal to the diameter of the locking bead; the distance between the left side wall of the second slot and the left side of the moving hole is less than the diameter of the locking bead; a return plate that can move up and down and a spring four that applies an upward elastic force to the return plate are provided in the shell, and the return plate is located on the rear side of the code-changing plate, and a driving part corresponding to the key is provided on the return plate, and when the return plate moves downward, the driving part can drive the key to move forward; a rotatable U-shaped lock beam is connected to the upper end of the shell; when the lock beam is in a locked state, the lock beam is pressed downward, and the lock beam can drive the unlocking plate, the code-changing plate, and the return plate to move downward; after the lock beam is unlocked, and only after the lock beam is rotated 180 degrees, the lock beam can be pressed downward to move, at this time, the downward movement of the lock beam can drive the code-changing plate to move downward, and the code-changing plate then drives the return plate to move downward.

2. A code-changeable button-type padlock according to claim 1, characterized in that: There are three slots, which are spaced apart in the left and right directions. Three buttons are arranged in each slot. The three buttons in the same slot are spaced apart up and down, and the buttons in different slots are correspondingly arranged on the left and right sides.

3. A code-changeable button-type padlock according to claim 1 or 2, characterized in that: Concave locking grooves are respectively provided on the facing surfaces at both ends of the lock beam; locking parts corresponding to the two locking grooves are respectively provided in the shell, and the locking parts can move left and right. A spring is provided in the shell to apply elastic force to the locking parts to move toward the corresponding locking grooves, and the upper and lower sides of the contact end of the locking part and the lock beam are both inclined surfaces.

4. A code-changeable button-type padlock according to claim 3, characterized in that: The upper end of the unlocking plate is provided with limiting parts respectively corresponding to the two locking parts, and the limiting part is located between the two locking parts. In the left-right direction, the distance from the limiting part to the corresponding locking part gradually increases from top to bottom.

5. The code-changeable button-type padlock according to claim 1, characterized in that: A connecting seat is provided on the inner side of the rear side wall of the shell, the button is slidably connected to the connecting seat front and back, and the front end of the button extends from the front side of the shell; an entry groove running through the inside and outside of the connecting seat is provided on the upper side wall of the connecting seat, and the driving part is correspondingly arranged with the entry groove.

6. A code-changeable button-type padlock according to claim 1, characterized in that: The cross section of the locking block is T-shaped, and a slide groove one adapted to and slidably connected with the locking block is provided on the unlocking plate, the slide groove one is connected with the slot one, the slide groove one runs through the unlocking plate, and the moving hole is connected with the slide groove one.

7. The code-changeable button-type padlock according to claim 5, characterized in that: The lower side wall of the connecting seat is provided with an installation groove running through the inside and outside of the connecting seat, a positioning strip is installed in the installation groove, the positioning strip is provided with a positioning protrusion protruding into the connecting seat, the button is provided with a positioning groove corresponding to the positioning protrusion, there are two positioning grooves, and the two positioning grooves are arranged at intervals in the front and rear directions.

8. The code-changeable button-type padlock according to claim 1, characterized in that: The right end of the lock beam is provided with a protruding limiting portion along its radial direction. When the lock beam is in a locked state, the limiting portion protrudes forward. A connecting groove corresponding to the right end of the lock beam is provided in the shell body. The connecting groove is opened forward, and a widened groove extending backward is provided on the rear side wall of the connecting groove.

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