Low-cost locking structure and key padlock

Abstract

The utility model discloses a low-cost locking structure and a key padlock. The low-cost locking structure comprises a locking piece, a limiting piece and a plurality of keys. The limiting piece is connected with the locking piece, and the locking piece and the limiting piece are rotatably connected in the circumferential direction and are fixedly connected in the axial direction; a strip-shaped through hole is formed in the limiting piece, and the keys are arranged in the strip-shaped through hole in a penetrating manner; at least two protrusions are arranged on the side face of the key, have position difference in the axial direction and are distributed in a staggered mode in the circumferential direction of the side face of the key. Locking blocks are arranged at the positions, corresponding to the protrusions, of the limiting piece or the strip-shaped through hole, the key rotates to switch one of the two protrusions on the key to correspond to the locking blocks in position, and therefore the locking blocks and the protrusions are matched to limit movement of the limiting piece; and when the key is switched to be staggered between the bulge and the locking block in an axial movement manner, the key relieves the locking of the limiting piece. According to the scheme, the structure can be simpler, and the material cost and the labor cost can be reduced.

Description

Technical Field

[0001] This utility model relates to locks, specifically a low-cost locking structure and a push-button padlock. Background Technology

[0002] Push-button padlocks can be categorized into two types based on their adjustable combination: fixed-combination and changeable-combination. These two types have long been at odds regarding structural security and functionality. Fixed-combination padlocks, because they don't require a combination-changing mechanism, are easier to simplify by reducing moving parts. However, if the combination is leaked or shared by multiple people, the inability to change the combination poses a significant security risk. Conversely, while changeable-combination padlocks improve security through combination resets, they require multi-level linkage mechanisms, leading to a surge in parts, high assembly complexity, and the redundancy can cause key jamming or reset failures. Fixed-combination padlocks sacrifice security for structural simplicity, while changeable-combination padlocks are forced into complex designs to ensure functional redundancy. This is especially true in the miniaturized padlock market, where traditional structures face the dual challenges of space constraints and functional completeness. Utility Model Content

[0003] To address the shortcomings of existing technologies, the purpose of this invention is to provide a low-cost locking structure and a button padlock, which simplifies the structure and helps reduce material and labor costs.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A low-cost locking structure includes a locking element, a limiting element that cooperates with the locking element to lock or unlock, and a number of buttons for locking or unlocking the limiting element;

[0006] The limiting member is connected to the locking member, and the locking member and the limiting member are rotatably connected in the circumferential direction and fixed in the axial direction, so as to switch the locking member's unlocked state and locked state.

[0007] The limiting member is provided with a strip-shaped through hole, and several of the buttons are inserted through the strip-shaped through hole. When the limiting member moves with the locking member, the limiting member and the buttons are displaced relative to each other through the strip-shaped through hole.

[0008] The button has at least two protrusions on its side, which have a positional difference in the axial direction and are staggered along the side of the button. A locking block is provided on the limiting member or in the strip-shaped through hole at the position corresponding to the protrusion. The button can be rotated to switch one of the two protrusions on the button to the position of the locking block, so that the locking block and the protrusion cooperate to restrict the movement of the limiting member. When the button is switched to the position where the protrusion and the locking block are misaligned by axial movement, the button releases the locking of the limiting member.

[0009] As a further improvement of this utility model, the side of the button is provided with a raised edge, at least a portion of which covers the edge of the strip-shaped through hole, in order to cooperate with the opening of the strip-shaped through hole to limit the maximum downward travel of the button.

[0010] As a further improvement of this utility model, the limiting member is also provided with a groove for adapting to the protruding edge. When the locking member moves to the unlocked state, the groove on the limiting member corresponds to the position of the protruding edge, which is used for pressing down the button and allowing the protruding edge to enter the groove. When the protruding edge on the button is located in the groove, the two protrusions on the button are axially misaligned with the locking block.

[0011] As a further improvement of this utility model, one end of the button is used for pressing, and the other end is provided with an anti-rotation block. The anti-rotation block is used to cooperate with the outer shell to restrict the rotation of the button. When the button is pressed down until the convex edge enters the groove, the anti-rotation block extends out of the shell and releases the restriction on the rotation of the button.

[0012] As a further improvement of this utility model, it also includes an elastic element. The side of the button is provided with a plurality of limiting grooves corresponding to the position of the elastic element. The elastic element and the limiting grooves cooperate to form a button pressing position. The position includes at least two protrusions that correspond to the locking block and a position where the protrusion is located in the groove.

[0013] As a further improvement of this utility model, the limiting groove is annular and extends along the circumference of the button to form a closed annular groove; and when the button is rotated to switch to the position of the protrusion and the locking block, the limiting groove corresponding to the position of the elastic element expands along the axial direction of the button to form an inclined surface.

[0014] A button padlock includes a housing and a low-cost locking structure as described in any of the above improvements disposed in the housing. The housing has openings at both ends corresponding to the button, and both openings are used to press the button to move axially. When one end of the button is pressed down, the other end extends out of the opening.

[0015] A keypad padlock includes a housing and a low-cost locking structure as described above with an anti-collision block. The housing includes a first housing and a second housing, and the low-cost locking structure is located between the first housing and the second housing. Openings are provided on the first housing and the second housing at positions corresponding to the ends of the keys, and the ends of the keys are axially movable within the openings. One of the openings also cooperates with an anti-rotation block to restrict key rotation.

[0016] As a further improvement of this utility model, a damping component is also provided between the first housing and the second housing. The damping component includes an elastic member and a fitting member. At least two fitting grooves are provided on the limiting member corresponding to the position of the fitting member. The positions of the two fitting grooves correspond to the positions of the limiting member in the locked and unlocked states, respectively. When the limiting member is in the locked or unlocked state, the fitting member is embedded in the fitting groove by the elastic member to limit the movement of the limiting member.

[0017] As a further improvement of this utility model, one side of the fitting member corresponding to the fitting groove is spherical, and the fitting groove is a bowl-shaped structure adapted to the spherical shape.

[0018] As a further improvement of this utility model, there are two protruding edges, and there is a gap between the two protruding edges; a baffle is provided on the first housing at the position corresponding to the gap, the baffle is used to embed in the gap and restrict the rotation of the button; when the button presses down the protruding edge into the groove, the baffle leaves the gap to release the restriction on the rotation of the button.

[0019] As a further improvement of this utility model, a rotating stop is provided at one end of the button corresponding to the second housing, and a blocking block is provided on the second housing at the position corresponding to the rotating stop. The rotating stop is used to cooperate with the blocking block to limit the maximum rotation angle of the button in both forward and reverse directions. When the rotating stop abuts against the blocking block, one of the two protrusions on the button corresponds to the position of the locking block. The beneficial effect of this invention is that it simplifies the traditional padlock combination change structure, thereby reducing material and labor costs. Attached Figure Description

[0020] Figure 1 This is a frontal perspective view of the present invention;

[0021] Figure 2 This is a three-dimensional structural diagram of the present invention with the first housing removed from the front.

[0022] Figure 3 This is a three-dimensional structural diagram of the back of the present invention;

[0023] Figure 4 This is a schematic diagram of the internal structure of the present invention;

[0024] Figure 5 This is a cross-sectional structural diagram of the present invention;

[0025] Figure 6 This is a schematic diagram of the button and the first housing in the engagement state of the present invention.

[0026] Figure 7 This is a schematic diagram of the limiting component structure of the present invention;

[0027] Figure 8This is a schematic diagram of the button structure of the present invention;

[0028] Figure 9 This is a schematic diagram of the button structure of the present invention rotated to another viewpoint;

[0029] Figure 10 This is a schematic diagram of the second housing structure of the present invention. Reference numerals: 1. Locking element; 2. Restricting element; 21. Strip-shaped through hole; 22. Locking block; 23. Groove; 24. Fitting groove; 3. Button; 31. Protrusion; 32. Protruding edge; 321. Spacing; 33. Limiting groove; 331. Inclined surface; 34. Anti-rotation block; 35. Rotation stop; 4. Elastic element; 5. Outer shell; 51. First housing; 511. Baffle; 52. Second housing; 521. Blocking block; 53. Opening; 6. Damping assembly; 61. Elastic element; 62. Fitting element. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the embodiments shown in the accompanying drawings.

[0031] Reference Figure 1-10 As shown,

[0032] A low-cost locking structure includes a locking element 1, a limiting element 2 that cooperates with the locking element 1 to lock or unlock, and a plurality of buttons 3 for locking or unlocking the limiting element 2;

[0033] The limiting member 2 is connected to the locking member 1, and the locking member 1 and the limiting member 2 are rotatably connected in the circumferential direction and fixed in the axial direction, so as to switch the unlocked state and the locked state of the locking member 1.

[0034] The limiting member 2 is provided with a strip-shaped through hole 21, and several buttons 3 are inserted through the strip-shaped through hole 21. When the limiting member 2 moves with the locking member 1, the limiting member 2 and the buttons 3 are relatively displaced through the strip-shaped through hole 21.

[0035] At least two protrusions 31 are provided on the side of the button 3. The two protrusions 31 have a positional difference in the axial direction and are staggered along the circumferential distribution of the side of the button 3. A locking block 22 is provided on the limiting member 2 or in the strip-shaped through hole 21 at the position corresponding to the protrusions 31. The button 3 can rotate to switch one of the two protrusions 31 on the button 3 to correspond to the position of the locking block 22, so that the locking block 22 cooperates with the protrusions 31 to restrict the movement of the limiting member 2. When the button 3 is switched to the position where the protrusions 31 and the locking block 22 are misaligned by axial movement, the button 3 releases the locking of the limiting member 2.

[0036] It should be noted that button 3 is not only pressable on one end; after button 3 is pressed down, the other end can also be pressed to pop it out. Of course, if the size of button 3 allows, button 3 can also be pulled out by pulling it out after it is pressed down.

[0037] This design achieves switching between locked and unlocked states through the linkage design of limiting member 2 and locking member 1. Limiting member 2 and locking member 1 move synchronously to ensure consistent action. Button 3 is inserted into the strip-shaped through hole 21 of limiting member 2. When limiting member 2 moves, the strip-shaped through hole 21 and button 3 are relatively displaced, allowing limiting member 2 to adjust its position independently without being affected by button 3, thus simplifying the structural layout.

[0038] Two protrusions 31 on the side of button 3 are staggered axially and circumferentially. By rotating button 3, one of the protrusions 31 can be selected to engage with the locking block 22. When protrusion 31 engages with the locking block 22, the protrusion 31 blocks the locking block 22, thereby blocking the movement path of the limiting member 2, achieving locking. When button 3 moves axially, causing protrusion 31 to be misaligned with the locking block 22, the limiting member 2 can move freely, completing unlocking. This description refers to a single button 3. As the number of buttons 3 increases, all buttons 3 must meet the aforementioned conditions to allow the limiting member 2 to move freely, thus forming a password mechanism. This design achieves password change by rotating button 3 to switch the position of protrusion 31 and locking block 22. Moreover, the limiting member 2 is connected to the locking member 1, producing a synchronous movement effect. Specifically, the locking member 1 can be the lock beam of a padlock or a U-shaped lock beam. The connection between the locking member 1 and the limiting member 2 can be circumferentially rotating and axially fixed. This solution requires only three components for password changing and locking: button 3, limiting component 2, and locking component 1. The minimal number of components greatly simplifies the structure, effectively reducing costs and avoiding problems such as jamming caused by complex structures. When using this solution, those skilled in the art should be aware that the password cannot be cracked by rotating button 3 during normal use. Therefore, button rotation should only be performed when password changing is possible. Specific implementation details will be described later.

[0039] To make the operation more stable, in one optional setting, the side of the button 3 is provided with a raised edge 32, at least part of which covers the edge of the strip-shaped through hole 21, in order to cooperate with the opening 53 of the strip-shaped through hole 21 to limit the maximum downward movement of the button 3.

[0040] The convex edge 32 on the side of button 3 has a dimensional difference with the width of the strip-shaped through hole 21, which can cover the edge of the strip-shaped through hole 21. When button 3 is pressed down, the convex edge 32 is blocked by the edge of the opening 53 of the strip-shaped through hole 21, limiting the axial movement range of button 3. This design avoids the problem of internal structure dislocation or damage caused by excessive pressing of button 3, while ensuring that button 3 can only move within the preset travel distance, improving the reliability and durability of operation.

[0041] In a further configuration, the limiting member 2 is also provided with a groove 23 for adapting to the protruding edge 32. When the locking member 1 moves to the unlocked state, the groove 23 on the limiting member 2 corresponds to the position of the protruding edge 32, which is used for the button 3 to be pressed down and for the protruding edge 32 to enter the groove 23. When the protruding edge 32 on the button 3 is located in the groove 23, the two protrusions 31 on the button 3 are axially misaligned with the locking block 22.

[0042] When locking element 1 is in the unlocked state, the groove 23 of limiting element 2 aligns with the protruding edge 32 of button 3, allowing button 3 to be pressed further down, causing the protruding edge 32 to embed into the groove 23. At this time, both protrusions 31 of button 3 are misaligned with the locking block 22, which can be used to change the password. Because the two protrusions 31 are axially misaligned with the locking block 22, button 3 can rotate without the restriction between the protrusions 31 and the locking block 22 preventing button 3 from rotating and thus preventing the password from being changed. Simultaneously, the contact between the groove 23 and the protruding edge 32 also provides a positioning indication. When not unlocked, because the groove 23 is not aligned with the protruding edge 32, the protruding edge 32 cannot be pressed down into the groove 23, creating an obstruction between the protrusions 31 and the locking block 22, preventing button 3 from rotating freely and thus hindering password changes. This means the user can only change the password in the unlocked state. This structure improves security while maintaining the original number of components.

[0043] In an optional preferred embodiment, one end of the button 3 is used for pressing, and the other end is provided with an anti-rotation block 34. The anti-rotation block 34 is used to cooperate with the outer shell 5 to restrict the rotation of the button 3. When the button 3 is pressed down until the protrusion 32 enters the groove 23, the anti-rotation block 34 extends out of the shell 5 and releases the restriction on the rotation of the button 3. As shown in the figure, it is square with rounded corners. Of course, it can also be a regular hexagon, etc.

[0044] The anti-rotation block 34 engages with the opening 53 of the outer casing 5, normally restricting the rotational freedom of the button 3 to prevent accidental password modification. When the button 3 is pressed down until the protrusion 32 enters the groove 23, the anti-rotation block 34 disengages from the restriction of the outer casing 5, allowing the user to rotate the button 3 to switch the position of the protrusion 31 and complete the password reset. This design ensures stability during daily use while only enabling the rotation function in specific operating steps, balancing security and functionality.

[0045] In an optional configuration, as a supplementary functional design, this solution also includes an elastic element 4. The side of the button 3 is provided with several limiting grooves 33 corresponding to the position of the elastic element 4. The elastic element 4 and the limiting grooves 33 cooperate to form a pressing position of the button 3. The pressing position includes at least two protrusions 31 corresponding to the locking block 22 and a protruding edge 32 located in the groove 23.

[0046] The elastic element 4 (such as a spring) cooperates with the limiting groove 33 to form clear tactile feedback, allowing the user to perceive different positions when operating the button 3 (such as locking position one, locking position two, and password reset position; it should be noted that locking position one is the state where one of the protrusions 31 corresponds to the locking block 22, locking position two is the state where the other protrusion 31 corresponds to the locking block 22, and password reset position is the state where the protrusion 32 enters the groove 23). The distribution of the limiting groove 33 matches the axial movement path of the button 3, ensuring stable positioning when the protrusion 31 is aligned or misaligned with the locking block 22, avoiding position deviation caused by vibration or accidental touch, and improving the accuracy of the button 3's pressing position.

[0047] In a preferred configuration, the limiting groove 33 is annular and extends along the circumference of the button 3 to form a closed annular groove; and when the button 3 is rotated to the position where the protrusion 31 corresponds to the position of the locking block 22, the limiting groove 33 corresponding to the position of the elastic member 4 extends along the axial direction of the button 3 to form a slope 331.

[0048] The annular limiting groove 33 allows the button 3 to maintain a stable engagement with the elastic element 4 during rotation, preventing the elastic element 4 from dislodging. When the button 3 rotates to the position where the protrusion 31 aligns with the locking block 22, the axially extended portion of the limiting groove 33 provides the elastic element 4 with a longer deformation space, reducing axial resistance. At the same time, it can also create a slope transition effect when entering another limiting groove 33. The elastic element 4 first contacts the axially extended slope, and under the action of elastic force, the elastic element 4 can abut along the extended portion. In conjunction with the transition and guiding effect, the button 3 can generate a certain axial movement under the action of elastic force, which helps the elastic element 4 to quickly match the deepest part of the limiting groove 33 of the button 3.

[0049] The above description mainly focuses on low-cost locking structures. The following section will also illustrate their application in padlocks:

[0050] A button padlock includes a housing 5 and a low-cost locking structure, as described in any of the above improvements, disposed in the housing 5. The housing 5 has openings 53 at both ends corresponding to the button 3, and both openings are used to press the button 3 to move axially. When one end of the button 3 is pressed down, the other end extends out from the opening 53.

[0051] The bidirectional opening 53 of the outer casing 5 allows users to press the button 3 from both ends. When one end of the button 3 is pressed down, the other end extends, allowing the user to easily press the button 3 from the other end to reset it.

[0052] A keypad padlock includes a housing 5 and a low-cost locking structure with an anti-rotation block 34 as described above. The housing 5 includes a first housing 51 and a second housing 52, and the low-cost locking structure is located between the first housing 51 and the second housing 52. Openings 53 are provided on the first housing 51 and the second housing 52 at positions corresponding to the ends of the keypad 3, and the ends of the keypad 3 are located in the openings 53 and can move axially. One of the openings 53 also cooperates with the anti-rotation block 34 to restrict the rotation of the keypad 3.

[0053] The split-type outer shell 5 (first shell 51 and second shell 52) is easy to assemble. The first shell 51 and the second shell 52 can be riveted together. At the same time, the opening 53 and the anti-rotation block 34 cooperate to further restrict the rotational freedom of the button 3. Only when the button 3 is in the state where the protrusion 32 is inserted into the groove 23 will the anti-rotation block 34 fully extend out of the opening 53 and the button 3 can rotate. Moreover, only when the anti-rotation block 34 rotates to the point where its shape is aligned with the opening 53 again can it be pressed back into the opening 53 to play the role of anti-rotation. This effect can also be reflected in the positioning of the protrusion 31 on the button 3. By using the cooperation between the shape of the anti-rotation block 34 and the opening 53, the position of the protrusion 31 and the position of the locking block 22 can be more stably aligned.

[0054] In a further configuration, a damping assembly 6 is provided between the first housing 51 and the second housing 52. The damping assembly 6 includes an elastic member 61 and a fitting member 62. At least two fitting grooves 24 are provided on the limiting member 2 corresponding to the position of the fitting member 62. The positions of the two fitting grooves 24 correspond to the positions of the limiting member in the locked and unlocked states, respectively. When the limiting member 2 is in the locked or unlocked state, the fitting member 62 is embedded in the fitting groove 24 by the elastic member 61 to restrict the movement of the limiting member 2.

[0055] The mating part 62 of the damping component 6 is embedded into the mating groove 24 under the action of the elastic part 61, forming a mechanical self-locking mechanism in the locked or unlocked state. This design prevents the limiting part 2 from moving accidentally in the non-operating state through physical limiting, which improves the stability of the padlock in the locked or unlocked state to a certain extent, while providing a clear gear shifting feel and enhancing the user experience.

[0056] Preferably, the side of the fitting member 62 corresponding to the fitting groove 24 is spherical, and the fitting groove 24 is a bowl-shaped structure adapted to the spherical shape.

[0057] The engagement of the spherical fitting 62 with the bowl-shaped fitting groove 24 reduces the friction of the contact surface, making it easier for the fitting 62 to slide into or out of the fitting groove 24, ensuring smooth operation of the damping assembly 6, and extending the service life of the fitting 62.

[0058] Furthermore, as a preferred embodiment to enhance the stability and safety of the button 3's movement, there are two protruding edges 32, and there is a gap 321 between the two protruding edges 32; a baffle 511 is provided on the first housing 51 at the position corresponding to the gap 321, the baffle 511 is used to embed into the gap 321 and restrict the rotation of the button 3; when the button 3 presses down on the protruding edge 32 and enters the groove 23, the baffle 511 leaves the gap 321 to release the restriction on the rotation of the button 3.

[0059] The cooperation between the double protrusions 32 and the baffle 511 achieves dual locking of the button 3's rotation function. Normally, the baffle 511 is embedded in the gap 321, completely restricting the rotation of the button 3; only when the button 3 is pressed down until the protrusions 32 enter the groove 23, the baffle 511 disengages from the gap 321, unlocking the rotation function. This design further enhances the security of the password change operation, preventing unauthorized users from cracking the password through brute force rotation. The baffle 511 also serves as a guide, making the movement of the button 3 more stable. This solution, combined with the anti-rotation block 34, achieves dual locking, further increasing security. It is foreseeable that due to the existence of the gap 321 between the two protrusions 32, the baffle 511 still needs to align with the gap 321 after the button 3 rotates. Therefore, the position of the gap 321 needs to ensure that the baffle 511 can still enter the gap 321 for cooperation after the button 3 rotates and changes the correspondence between the protrusion and the locking block 22. In fact, as one of the alternative solutions, the two protrusions are located on both sides of the button 3, forming a 180° relationship in the circumferential direction with the button 3 as the axis. Similarly, the interval 321 and the baffle 511 can also be located on both sides of the button 3, forming a 180° relationship in the circumferential direction with the button 3 as the axis.

[0060] In a further configuration, a rotating stop 35 is provided on one end of the button 3 corresponding to the second housing 52, and a blocking block 521 is provided on the second housing 52 corresponding to the position of the rotating stop 35. The rotating stop 35 is used to cooperate with the blocking block 521 to limit the maximum rotation angle of the button 3 in both forward and reverse directions. When the rotating stop 35 abuts against the blocking block 521, one of the two protrusions 31 on the button 3 corresponds to the position of the locking block 22.

[0061] The rotating stop 35 and the blocking block 521 limit the maximum rotation angle of the button 3, ensuring that the user can only switch the position of the protrusion 31 within a preset range. With only two protrusions, the cooperation between the rotating stop 35 and the blocking block 521 can produce two corresponding states, namely, the states where the two protrusions correspond to the lock block 22, making it more convenient for the user to switch passwords. When the rotating stop 35 abuts against the blocking block 521, the corresponding protrusion 31 precisely corresponds to the lock block 22, avoiding password setting errors caused by excessive rotation and improving the reliability of password reset. The above description is only a preferred embodiment of the present invention, and the scope of protection of the present invention is not limited to the above embodiments. All technical solutions within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A low-cost locking structure, characterized in that, Includes a locking element, a limiting element that works with the locking element to lock or unlock, and several buttons for locking or unlocking the limiting element; The limiting member is connected to the locking member, and the locking member and the limiting member are circumferentially rotatable and axially fixed to switch the locking member between the unlocked state and the locked state. The limiting member is provided with a strip-shaped through hole, and several of the buttons are inserted through the strip-shaped through hole. When the limiting member moves with the locking member, the limiting member and the buttons are displaced relative to each other through the strip-shaped through hole. The button has at least two protrusions on its side, which have a positional difference in the axial direction and are staggered along the side of the button. A locking block is provided on the limiting member or in the strip-shaped through hole at the position corresponding to the protrusion. The button can be rotated to switch one of the two protrusions on the button to the position of the locking block, so that the locking block and the protrusion cooperate to restrict the movement of the limiting member. When the button is switched to the position where the protrusion and the locking block are misaligned by axial movement, the button releases the locking of the limiting member.

2. The low-cost locking structure according to claim 1, characterized in that, The side of the button is provided with a raised edge, at least a portion of which covers the edge of the strip-shaped through hole, in order to cooperate with the opening of the strip-shaped through hole to limit the maximum downward travel of the button.

3. The low-cost locking structure according to claim 2, characterized in that, The limiting member is also provided with a groove for adapting to the protruding edge. When the locking member moves to the unlocked state, the groove on the limiting member corresponds to the position of the protruding edge, which is used for pressing down the button and allowing the protruding edge to enter the groove. When the protruding edge on the button is located in the groove, the two protrusions on the button are axially misaligned with the locking block.

4. The low-cost locking structure according to claim 3, characterized in that, One end of the button is for pressing, and the other end is provided with an anti-rotation block. The anti-rotation block is used to cooperate with the outer shell to restrict the rotation of the button. When the button is pressed down until the convex edge enters the groove, the anti-rotation block extends out of the shell and releases the restriction on the rotation of the button.

5. The low-cost locking structure according to claim 1, 2, 3, or 4, characterized in that, It also includes an elastic element, and the side of the button is provided with several limiting grooves corresponding to the position of the elastic element. The elastic element and the limiting grooves cooperate to form a button pressing position, and the position includes at least two protrusions corresponding to the locking block and a position where the protrusion is located in the groove.

6. The low-cost locking structure according to claim 5, characterized in that, The limiting groove is annular and extends along the circumference of the button to form a closed annular groove; and when the button is rotated to switch to the position of the protrusion and the locking block, the limiting groove corresponding to the position of the elastic element expands along the axial direction of the button to form a slope.

7. A push-button padlock, characterized in that, The device includes a housing and a low-cost locking structure as described in any one of claims 1 to 6 disposed within the housing. The housing has openings at both ends corresponding to the button, and both openings are used to press the button to move axially. When one end of the button is pressed down, the other end extends out from the opening.

8. A push-button padlock, characterized in that, The device includes a housing and a low-cost locking structure as described in claim 4. The housing includes a first housing and a second housing, and the low-cost locking structure is located between the first housing and the second housing. Openings are provided on the first housing and the second housing at positions corresponding to the ends of the buttons, and the ends of the buttons are located in the openings and can move axially. One of the openings also cooperates with an anti-rotation block to restrict the rotation of the button.

9. The button padlock according to claim 8, characterized in that, A damping assembly is also provided between the first housing and the second housing. The damping assembly includes an elastic member and a fitting member. At least two fitting grooves are provided on the limiting member corresponding to the position of the fitting member. The positions of the two fitting grooves correspond to the positions of the limiting member in the locked and unlocked states, respectively. When the limiting member is in the locked or unlocked state, the fitting member is embedded in the fitting groove by the elastic member to limit the movement of the limiting member.

10. The button padlock according to claim 9, characterized in that, The fitting component has a spherical shape on one side corresponding to the fitting groove, and the fitting groove is a bowl-shaped structure adapted to the spherical shape.

11. The button padlock according to claim 8, 9, or 10, characterized in that, There are two protruding edges, and there is a gap between the two protruding edges; a baffle is provided on the first housing at the position corresponding to the gap, the baffle is used to embed in the gap and restrict the rotation of the button; when the button presses down the protruding edge into the groove, the baffle leaves the gap to release the restriction on the rotation of the button.

12. The button padlock according to claim 11, characterized in that, A rotating stop is provided on one end of the button corresponding to the second housing. A blocking block is provided on the second housing corresponding to the position of the rotating stop. The rotating stop is used to cooperate with the blocking block to limit the maximum rotation angle of the button in both forward and reverse directions. When the rotating stop abuts against the blocking block, one of the two protrusions on the button corresponds to the position of the locking block.

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