Code changing structure, lock structure and padlock

Abstract

The utility model discloses a code changing structure, a lock structure and a padlock, which comprise a plurality of press keys for pressing, a locking plate matched with the press keys for locking and a lock beam connected on the locking plate, a plurality of limiting pieces capable of moving along the moving direction of the press keys are arranged on the locking plate, bulges are arranged on the side surfaces of the press keys corresponding to the positions of the limiting pieces, and the lock beam is connected with the lock beam. The limiting piece is provided with a notch used for allowing the protrusion to go in and out in a matched mode. The lock beam and the locking plate are fixedly connected in the pulling-out direction of the lock beam, and the lock beam and the locking plate are rotationally connected in the circumferential direction. And when all the keys are pressed down until the bulges correspond to the notches of the corresponding limiting pieces, the lock beam is unlocked, the lock beam is pulled out to drive the locking plate to move until at least part of the bulges enter the notches, and the keys axially move to drive the limiting pieces to move to replace the password. The complexity of a code changing structure can be simplified, the assembling cost is reduced, the occupied structural space is reduced, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a lock, concretely is a code changing structure, a lock structure and a padlock. BACKGROUND

[0002] The prior art patent CN119686589B discloses a code changing key type padlock, which comprises a lock plate, a code changing plate, a spring two and a spring three. When changing the code, multiple components need to be cooperated, resulting in complex structure, high assembly cost and large structure space.

[0003] It is not conducive to improve production efficiency and reduce cost. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of the prior art, the utility model aims to provide a code changing structure, a lock structure and a padlock, which can simplify the complexity of the code changing structure, reduce the assembly cost, reduce the structure space occupation and improve the production efficiency.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a code changing structure, comprising a plurality of keys for pressing, a locking plate for locking the keys, and a lock beam connected to the locking plate, wherein the locking plate is provided with a plurality of limiting members movable along the activity direction of the keys, the side surface of the key is provided with a protrusion corresponding to the position of the limiting member, and the limiting member is provided with a gap for the protrusion to enter and exit; the lock beam is fixedly connected to the locking plate in the pull-out direction of the lock beam, and the lock beam and the locking plate are circumferentially rotatably connected; when the protrusions of all keys correspond to the gaps of the corresponding limiting members, the lock beam is unlocked, and the lock beam is pulled out to drive the locking plate to move to the position where the protrusion at least partially enters the gap, and the limiting member is moved by the axial activity of the key to change the password.

[0006] As a further improvement of the utility model, a plurality of fixed limiting rods are further provided, the limiting member is provided with a matching part for matching the limiting rod, the matching part is separated from the limiting rod to allow the limiting member to move when changing the password, and the matching part is re-matched with the limiting rod after the locking plate is reset to limit the movement of the limiting member.

[0007] As a further improvement of the utility model, the matching part comprises at least one through hole or gap, and the limiting rod penetrates the through hole or gap or is located at the bottom of the matching part to limit the movement of the limiting member.

[0008] As a further improvement of the utility model, the matching part comprises two through holes or gaps, and the limiting rod is matched with the two through holes or gaps to limit the limiting members at two position states respectively.

[0009] As a further improvement of the utility model, the position corresponding to the limiting piece on the locking plate is provided with a sliding groove for the movement of the limiting piece, the groove wall of the sliding groove is provided with a groove, the position corresponding to the groove of the limiting piece is provided with a protrusion, and the protrusion is located in the groove to prevent the limiting piece from coming out of the sliding groove.

[0010] Also provided is a lock structure, characterized by comprising a shell and a code changing structure as described in any one of the preceding embodiments arranged in the shell.

[0011] The position corresponding to the locking beam in the shell is provided with an anti-rotation protrusion,

[0012] The position corresponding to the anti-rotation protrusion of the locking beam is provided with a plane;

[0013] The locking beam is sequentially provided with a plane, a rotation groove and a code changing groove along the axial direction;

[0014] The plane cooperates with the anti-rotation protrusion to limit the rotation of the locking beam;

[0015] When the locking beam is pulled out to the position corresponding to the rotation groove and the anti-rotation protrusion, the groove wall of the rotation groove cooperates with the anti-rotation protrusion to limit the locking beam from being continuously pulled out and to rotate;

[0016] When the locking beam is rotated to the position corresponding to the code changing groove and the anti-rotation protrusion, the locking beam can be continuously pulled out and drives the locking plate to move, the limiting piece cooperates with the key, and the limiting piece is moved by the key to change the code.

[0017] Also provided is a lock structure, characterized by comprising a shell and a code changing structure as described in any one of the preceding embodiments arranged in the shell.

[0018] The position corresponding to the locking beam in the shell is provided with an anti-rotation protrusion,

[0019] The position corresponding to the anti-rotation protrusion of the locking beam is provided with a plane;

[0020] The locking beam is sequentially provided with a plane, a rotation groove and a code changing groove along the axial direction;

[0021] The limiting rod is fixed in the shell;

[0022] The plane cooperates with the anti-rotation protrusion to limit the rotation of the locking beam;

[0023] When the locking beam is pulled out to the position corresponding to the rotation groove and the anti-rotation protrusion, the groove wall of the rotation groove cooperates with the anti-rotation protrusion to limit the locking beam from being continuously pulled out and to rotate;

[0024] When the locking beam is rotated to the position corresponding to the code changing groove and the anti-rotation protrusion, the locking beam can be continuously pulled out and drives the locking plate to move, the limiting piece cooperates with the key, and the limiting piece is moved by the key to change the code.

[0025] As a further improvement of this utility model, the included angle between the plane and the bottom of the code-changing slot is 90° or 180°.

[0026] A padlock is also provided, comprising a lock structure as described in any of the above.

[0027] The beneficial effects of this utility model are as follows: the code-changing structure simplifies the component coordination required for code changing through the direct linkage of the button, locking plate, limiting component and lock beam, reduces the structural complexity, helps to reduce assembly costs and structural space occupation, thereby improving production efficiency and alleviating the problems of high cost and large space caused by the coordination of multiple components in the prior art; the lock structure realizes the orderly switching of locking, rotating and code-changing states through the cooperation of the plane, rotating groove, code-changing groove and anti-rotation protrusion on the lock beam, improving the ease of use. Attached Figure Description

[0028] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0029] Figure 2 This is a front view schematic diagram of the overall structure of this utility model;

[0030] Figure 3 This is a three-dimensional schematic diagram of the back of the code-switching structure of this utility model;

[0031] Figure 4 This is a three-dimensional schematic diagram of the back of the code-switching structure of this utility model from another perspective.

[0032] Figure 5 This is a schematic diagram of the internal structure of the shell of this utility model;

[0033] Figure 6 This is a three-dimensional structural diagram of the interior of the shell of this utility model from another perspective;

[0034] Reference numerals: 1. Button; 2. Locking plate; 3. Locking beam; 4. Limiting component; 5. Protrusion; 6. Notch; 7. Limiting rod; 8. Mating part; 9. Through hole; 10. Slide groove; 11. Groove; 12. Protrusion; 13. Housing; 14. Anti-rotation protrusion; 15. Flat surface; 16. Rotation groove; 17. Code changing groove. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the embodiments shown in the accompanying drawings.

[0036] Reference Figures 1-6As shown, this embodiment provides a code-changing structure, including several buttons 1 for pressing, a locking plate 2 that locks in conjunction with the buttons 1, and a locking beam 3 connected to the locking plate 2. The locking plate 2 is provided with several restrictors 4 that can move along the movement direction of the buttons 1. The side of the buttons 1 is provided with protrusions 5 corresponding to the positions of the restrictors 4. The restrictors 4 are provided with notches 6 for cooperating with the protrusions 5 to move in and out. The locking beam 3 is fixedly connected to the locking plate 2 along the pulling direction of the locking beam 3, and the locking beam 3 is rotatably connected to the locking plate 2 in the circumferential direction. When all the protrusions 5 of the buttons 1 correspond to the notches 6 of the corresponding restrictors 4, the locking beam 3 is unlocked, and the locking beam 3 is pulled out, causing the locking plate 2 to move until at least part of the protrusions 5 enter the notches 6. The axial movement of the buttons 1 causes the restrictors 4 to move and change the code.

[0037] The axial and circumferential rotational connections between the locking beam 3 and the locking plate 2 are achieved by setting an annular groove at the connection point of the locking beam 3 and the locking plate 2, which engages with a locking block. This ensures that the axial fixation relationship between the locking beam 3 and the locking plate 2 is not affected when the locking beam 3 rotates relative to the locking plate 2, and that the locking plate 2 moves synchronously when the locking beam 3 is pulled out. The button 1 engages with the protrusion 5 and notch 6 of the limiting member 4. When a code change is required, all buttons 1 are pressed down until the protrusion 5 aligns with the notch 6 of the limiting member 4. At this time, the locking beam 3 is released from its locked state. Pulling the locking beam 3 outward causes the locking plate 2 to move synchronously until the protrusion 5 of the button 1 is at least partially inserted into the notch 6 of the limiting member 4. Then, by axially pressing or flicking the button 1, the limiting member 4 can be moved along the direction of movement of the button 1, thereby adjusting the engagement position between the limiting member 4 and the button 1, and realizing the code change. This structure eliminates the need for multiple additional transmission components, simplifies the component coordination in the code change process, helps reduce assembly difficulty and cost, and reduces the overall space occupied by the structure, improving production efficiency.

[0038] To facilitate the positioning of the limiting member 4 after the code change and prevent accidental movement that could lead to code corruption, in one optional scheme, the code-changing structure further includes several fixed limiting rods 7. The limiting member 4 is provided with a mating part 8 for cooperating with the limiting rod 7. When the limiting member 4 changes the position of the code, the mating part 8 separates from the limiting rod 7 to allow the limiting member 4 to move. After the locking plate 2 is reset, the mating part 8 and the limiting rod 7 re-mate to restrict the movement of the limiting member 4.

[0039] The limiting rod 7 can be fixed to the lock housing 13 or other fixed components, and its position corresponds to the mating part 8 of the limiting member 4. When the lock beam 3 moves the locking plate 2 to the code-changing position, the limiting member 4 moves synchronously with the locking plate 2, causing the mating part 8 to disengage from the limiting rod 7. The limiting member 4 is released from its limiting constraint and can move freely to cooperate with the code-changing operation. After the code-changing is completed, the lock beam 3 is reset, and the locking plate 2 returns to its initial position. The mating part 8 re-engages with the limiting rod 7, limiting the limiting member 4 and preventing it from moving freely when not changing codes. This structure, through the cooperation of the limiting rod 7 and the mating part 8, improves the stability of the code-changing structure, reduces the possibility of accidental code changes, and does not increase the structural complexity excessively, thus balancing practicality and economy.

[0040] Specifically, further optimization can be achieved by selecting the following method: the mating part 8 includes at least one through hole 9 or notch, and the limiting rod 7 is inserted into the through hole 9 or notch or located at the bottom of the mating part 8 to restrict the movement of the limiting member 4.

[0041] The size of the through hole 9 or notch in the mating part 8 is adapted to the outer diameter of the limiting rod 7, ensuring that the limiting rod 7 can be stably inserted or fitted. When the mating part 8 is a through hole 9, the limiting rod 7 is inserted into the through hole 9, and the movement of the limiting member 4 is restricted by the fit between the hole wall and the limiting rod 7; when the mating part 8 is a notch, the limiting rod 7 can be inserted into the notch or abut against the bottom of the notch, which can also achieve the limitation of the limiting member 4. This structural design is simple, easy to manufacture, and convenient for mass production, while effectively realizing the limiting function and further improving the stability of the code changing structure.

[0042] In some options, the mating part 8 includes two through holes 9 or notches, and the limiting rod 7 mates with the two through holes 9 or notches to limit the limiting elements in two position states.

[0043] The two through holes 9 or notches correspond to the locked position and initial limit position of the limiting component 4 after code switching, respectively. The limit rod 7, through its engagement with different through holes 9 or notches, effectively limits the limiting component 4 in different positional states. When the limiting component 4 is in its initial state, the limit rod 7 engages with one of the through holes 9 or notches; after code switching, the limiting component 4 moves to a new position, and the limit rod 7 engages with the other through hole 9 or notch, ensuring that the limiting component 4 can be stably limited in both critical positions. This design further improves the reliability of the limit, allowing for precise control of the limiting component 4's range of motion, and improving the stability of the code switching structure and the reliability of code storage.

[0044] To further improve the connection stability between the limiting member 4 and the locking plate 2 and prevent the limiting member 4 from coming off during movement, in another alternative embodiment, the locking plate 2 is provided with a groove 10 for the limiting member 4 to move at the position corresponding to the limiting member 4. The groove 10 has a groove 11 on its wall, and the limiting member 4 has a protrusion 12 at the position corresponding to the groove 11. The protrusion 12 is located in the groove 11 to prevent the limiting member 4 from coming off the groove 10. As shown in the figure, the groove 10 can be T-shaped by the two grooves 11.

[0045] The dimensions of the slide groove 10 are adapted to the shape of the limiting member 4, ensuring that the limiting member 4 can move smoothly along the slide groove 10. The dimensions of the groove 11 and the protrusion 12 are matched. After the protrusion 12 is embedded in the groove 11, it will not affect the movement of the limiting member 4 along the slide groove 10, while preventing the limiting member 4 from coming out in a direction perpendicular to the slide groove 10. This structure, through the cooperation of the protrusion 12 and the groove 11, improves the connection stability between the limiting member 4 and the locking plate 2 without adding additional limiting components, reduces the possibility of the limiting member 4 coming out and causing the code-changing structure to fail, extends the service life of the code-changing structure, and maintains the simplicity of the structure.

[0046] Based on the above-described code-changing structure, this embodiment also provides a lock structure, including a housing 13 and a code-changing structure as described above disposed within the housing 13; an anti-rotation protrusion 14 is provided within the housing 13 corresponding to the position of the lock beam 3, and a plane 15 is provided on the lock beam 3 corresponding to the position of the anti-rotation protrusion 14; the lock beam 3 is provided with the plane 15, a rotation groove 16, and a code-changing groove 17 sequentially along the axial direction; the plane 15 cooperates with the anti-rotation protrusion 14 to restrict the rotation of the lock beam 3; when the lock beam 3 is pulled out to the position where the rotation groove 16 corresponds to the position of the anti-rotation protrusion 14, the groove wall of the rotation groove 16 cooperates with the anti-rotation protrusion 14 to restrict the lock beam 3 from being pulled out further, and allows the lock beam 3 to rotate; when the lock beam 3 rotates to the position where the code-changing groove 17 corresponds to the position of the anti-rotation protrusion 14, the lock beam 3 can be pulled out further, and the locking plate 2 is moved, allowing the limiting member 4 to cooperate with the button 1, and the button 1 drives the limiting member 4 to move and change the code.

[0047] The housing 13 is the basic component of the lock structure. All components of the swivel mechanism are installed inside the housing 13. The anti-rotation protrusion 14 is integrally formed or fixedly connected to the inner wall of the housing 13, and its position corresponds to the plane 15 of the lock beam 3. The plane 15 of the lock beam 3, the rotation groove 16, and the swivel groove 17 are arranged sequentially along the axial direction, and their dimensions are adapted to the anti-rotation protrusion 14. In the non-code-changing state, the plane 15 of the lock beam 3 fits against the anti-rotation protrusion 14, restricting the lock beam 3 from rotating relative to the housing 13 and ensuring the locking stability of the lock. When code changing is required, first press the correct code and press button 1 to unlock the lock beam 3. Pull the lock beam 3 outward. When the rotating groove 16 moves to the position corresponding to the anti-rotation protrusion 14, the groove wall of the rotating groove 16 abuts against the anti-rotation protrusion 14, restricting the lock beam 3 from being pulled outward. At this time, the lock beam 3 can be rotated. When the lock beam 3 is rotated to the position corresponding to the code-changing groove 17 and the anti-rotation protrusion 14, the anti-rotation protrusion 14 no longer restricts the axial movement of the lock beam 3, and the lock beam 3 can be pulled out. The lock beam 3 drives the locking plate 2 to move to the code-changing position. At this time, the limiting member 4 cooperates with the button 1. The code changing is achieved by the button 1 driving the limiting member 4 to move. The lock structure achieves orderly switching between the three states of locking, rotating, and changing codes through the cooperation of the plane 15, rotating groove 16, changing code groove 17 on the lock beam 3 and the anti-rotation protrusion 14. The operation process is clear and the structural design is reasonable, which helps to improve the ease of use of the lock, while simplifying the internal structure of the lock and reducing production costs.

[0048] To integrate the fixing structure of the limiting rod 7 and make the lock structure more compact, in one optional embodiment, the lock structure includes a housing 13 and a changing mechanism including the limiting rod 7, as described above, disposed within the housing 13; an anti-rotation protrusion 14 is provided within the housing 13 corresponding to the position of the lock beam 3, and a plane 15 is provided on the lock beam 3 corresponding to the position of the anti-rotation protrusion 14; the lock beam 3 is provided with the plane 15, a rotation groove 16, and a changing mechanism groove 17 sequentially along the axial direction; the limiting rod 7 is fixed within the housing 13; the plane 15 and the anti-rotation protrusion 16 are connected to the locking mechanism 7. The rotating protrusion 14 cooperates to restrict the rotation of the lock beam 3; when the lock beam 3 is pulled out to the position where the rotating groove 16 corresponds to the anti-rotation protrusion 14, the groove wall of the rotating groove 16 cooperates with the anti-rotation protrusion 14 to restrict the lock beam 3 from being pulled out further, and allows the lock beam 3 to rotate; when the lock beam 3 rotates to the position where the code changing groove 17 corresponds to the position of the anti-rotation protrusion 14, the lock beam 3 can be pulled out further, and it will drive the locking plate 2 to move, the limiting member 4 will separate from the limit rod 7, and the limiting member 4 will cooperate with the button 1, and the button 1 will drive the limiting member 4 to move and change the code.

[0049] The limiting rod 7 is directly fixed inside the housing 13, eliminating the need for additional fixing brackets, reducing the number of parts, making the internal structure of the lock more compact, and improving space utilization. The anti-rotation protrusion 14 cooperates with the plane 15, rotation groove 16, and code-changing groove 17 of the lock beam 3 in the same way as the aforementioned lock structure, ensuring orderly switching between locking, rotation, and code-changing states. At the same time, the synergistic effect of the limiting rod 7 and the mating part 8 of the limiting component 4 releases the limit during code changing and restores the limit after code changing, improving the stability of the lock. This structure integrates the limiting rod 7 with the housing 13, further simplifying the lock assembly process, reducing assembly costs, improving the internal spatial layout of the lock, and enhancing the rationality of the structure.

[0050] Specifically, the following optimization method can be selected: the included angle formed by the bottom of the plane 15 and the slot 17 is 90° or 180°.

[0051] The included angle between the plane 15 and the bottom of the changing slot 17 is set to 90° or 180°, which conforms to conventional machining processes, facilitates the manufacturing of the lock beam 3, and reduces processing difficulty and cost. When the included angle is 90°, the lock beam 3 can be rotated 90° to make the changing slot 17 correspond to the anti-rotation protrusion 14; when the included angle is 180°, the lock beam 3 can be rotated 180° to achieve the correspondence. Both angle designs can meet the switching needs of the changing operation and are easy to operate. Users can choose the appropriate angle according to their usage habits or the installation scenario of the lock, thereby improving the applicability of the lock.

[0052] Based on the optimized lock structure described above, this embodiment also provides a padlock, including any of the lock structures described above.

[0053] The padlock housing 13 adopts a structural design suitable for various usage scenarios. Both ends of the lock beam 3 extend out of the housing 13, forming a hook-on structure, making it easy to use the padlock on various items. This padlock integrates all the technical features of the aforementioned lock structures. Through a simplified swivel mechanism and a reasonable design that coordinates the lock beam 3 with the anti-rotation protrusion 14, it improves the convenience of swivel operation while maintaining the original functions of the padlock, reduces the production and assembly costs, reduces the overall size of the padlock, and enhances its market competitiveness. At the same time, its stable limiting structure and swivel mechanism help improve the reliability and service life of the padlock.

[0054] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A code-changing structure, comprising a plurality of buttons for pressing, a locking plate for locking with the buttons, and a locking beam connected to the locking plate, characterized in that, The locking plate is provided with several restrictors that can move along the direction of button movement. The side of each button has a protrusion corresponding to the position of the restrictor. The restrictor has a notch for cooperating with the protrusion. The locking beam is fixedly connected to the locking plate along the direction of the locking beam being pulled out, and the locking beam and the locking plate are rotatably connected in the circumferential direction. When the protrusions of all buttons correspond to the notches of the corresponding restrictors, the locking beam is unlocked, and the locking beam is pulled out, causing the locking plate to move until at least part of the protrusion enters the notch. The axial movement of the buttons causes the restrictors to move and change the password.

2. The code-switching structure according to claim 1, characterized in that, It also includes several fixed limiting rods. The limiting member is provided with a mating part for cooperating with the limiting rod. When the position of the password is changed, the mating part separates from the limiting rod to allow the limiting member to move. After the locking plate is reset, the mating part and the limiting rod re-cooperate to restrict the movement of the limiting member.

3. The code-switching structure according to claim 2, characterized in that, The mating part includes at least one through hole or notch, and the limiting rod passes through the through hole or notch or is located at the bottom of the mating part to restrict the movement of the limiting member.

4. The code-switching structure according to claim 3, characterized in that, The mating part includes two through holes or notches, and the limiting rod mates with the two through holes or notches to limit the limiting components in two different position states.

5. The code-switching structure according to claim 1, characterized in that, The locking plate has a sliding groove for the movement of the limiting member at the corresponding position. The groove wall has a groove, and the limiting member has a protrusion at the corresponding position of the groove. The protrusion is located in the groove to prevent the limiting member from dislodging from the sliding groove.

6. A lock structure, characterized in that, Includes a housing and a code-switching structure as described in any one of claims 1-5 disposed within the housing; An anti-rotation protrusion is provided inside the housing at the position corresponding to the locking beam. The locking beam has a flat surface at the position corresponding to the anti-rotation protrusion; The locking beam is provided with a plane, a rotating groove, and a code-changing groove in sequence along the axial direction; The plane cooperates with the anti-rotation protrusion to restrict the rotation of the lock beam; When the locking beam is pulled out to the position where the rotating groove corresponds to the anti-rotation protrusion, the groove wall of the rotating groove cooperates with the anti-rotation protrusion to restrict the locking beam from being pulled out further, and allows the locking beam to rotate. When the lock beam rotates to the position where the code-changing groove aligns with the anti-rotation protrusion, the lock beam can be pulled out further, causing the locking plate to move. This allows the limiting component to engage with the button, and the button then moves the limiting component to change the code.

7. A lock structure, characterized in that, Includes a housing and a code-switching structure as described in any one of claims 2-4 disposed within the housing; An anti-rotation protrusion is provided inside the housing at the position corresponding to the locking beam. The locking beam has a flat surface at the position corresponding to the anti-rotation protrusion; The locking beam is provided with a plane, a rotating groove, and a code-changing groove in sequence along the axial direction; The limiting rod is fixed inside the housing; The plane cooperates with the anti-rotation protrusion to restrict the rotation of the lock beam; When the locking beam is pulled out to the position where the rotating groove corresponds to the anti-rotation protrusion, the groove wall of the rotating groove cooperates with the anti-rotation protrusion to restrict the locking beam from being pulled out further, and allows the locking beam to rotate. When the lock beam rotates to the position where the code-changing groove corresponds to the anti-rotation protrusion, the lock beam can continue to be pulled out, which will drive the locking plate to move. The limiting component and the limit rod will separate, allowing the limiting component to cooperate with the button. The button will drive the limiting component to move and change the code.

8. The lock structure according to claim 7, characterized in that, The angle between the plane and the bottom of the code-changing slot is 90° or 180°.

9. A padlock, characterized in that, Includes the lock structure as described in any one of claims 7-8.

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