A key code lock cylinder

Abstract

The application provides a button password lock core, which inputs password by pressing, and the password is the number of pressing of each button. Multiple password lock cores are used in cooperation to form a button password lock with multiple button passwords. When a button is pressed once, the lock control disc is driven to rotate a step further, the lock control disc drives the step gear to move a step, the step gear drives the step gear to rotate a step, the step gear drives the locking disc to rotate a step through the positioning bead. The locking disc is rotated to the position corresponding to the locking slot and the locking socket, so that the locking block can enter the locking slot, and the lock locked by the locking block can be opened to realize unlocking.

Description

Technical Field

[0001] This invention relates to the field of keypad combination lock technology, and more specifically to a keypad combination lock cylinder. Background Technology

[0002] A keypad combination lock cylinder is a crucial component that controls the opening and closing of a lock by inputting a password via keypad buttons. A mechanical keypad combination lock cylinder is a type of lock cylinder that relies on a mechanical structure to achieve password input and unlocking control.

[0003] Its structure typically includes the following main parts:

[0004] Button assembly: Consists of multiple independent mechanical buttons, each button representing a number or character.

[0005] Password setting mechanism: Used to set and change the unlocking password.

[0006] Transmission components: These transmit the operation of the buttons to other mechanical structures inside the lock cylinder.

[0007] Locking bolt control mechanism: When the password is entered correctly, it controls the extension and retraction of the locking bolt to achieve locking and unlocking.

[0008] The user presses the buttons in a preset sequence. The button presses are transmitted to the internal mechanical structure via a transmission component. The internal mechanical structure then matches the button sequence and combination with the preset password. When the entered button sequence and combination perfectly matches the preset password, the bolt control mechanism actuates, retracting the bolt and unlocking the lock.

[0009] There are many different structures for existing mechanical keypad combination lock cylinders. As a key component for opening and closing locks, it has always been a focus of research and development. Therefore, how to optimize and innovate mechanical keypad combination lock cylinders is a question that needs to be considered. Summary of the Invention

[0010] In response to the problems pointed out in the background art, the present invention proposes a keypad combination lock cylinder that is different from the existing technology. Its structure is reasonably designed and its operation is stable and reliable.

[0011] The technical solution of this invention is implemented as follows:

[0012] A keypad combination lock cylinder includes a base, an outer shell on the upper side of the base, and the outer shell is hollow inside;

[0013] The upper side of the base is provided with a circular locking disc, the upper side of the locking disc is provided with a circular stepping gear, the upper side of the stepping gear is provided with a locking control turntable, the upper side of the locking control turntable is provided with a button, and the upper side of the outer shell is provided with a hole for the upper end of the button to pass through.

[0014] The upper side of the base is provided with a circular limiting ring, and the locking disc is adapted to be connected inside the limiting ring. The side wall of the limiting ring is provided with a locking socket, and the side wall of the locking disc is provided with a locking slot corresponding to the locking socket.

[0015] The locking disc and the stepper gear are arranged to abut against each other, and a positioning bead is provided between the locking disc and the stepper gear. The positioning bead is fixedly connected to the locking disc, and the stepper gear is provided with a groove to accommodate the positioning bead.

[0016] The stepper gear is provided with a limiting part 1 extending radially therefrom, and the limiting ring is provided with a limiting part 2 protruding upward therefrom. The limiting part 1 and the limiting part 2 cooperate to limit the rotation of the stepper gear.

[0017] The lower side of the lock control turntable is provided with a lower connecting shaft, and the upper side of the lock control turntable is provided with an upper connecting shaft. The lower connecting shaft extends into the stepper gear, and the upper connecting shaft extends into the button. The outer side wall of the upper connecting shaft is provided with a spiral drive bar. The button is provided with a connecting cavity that connects to the upper connecting shaft. The side wall of the connecting cavity is provided with a spiral drive groove. The drive bar connects to the drive groove. When the button is pressed, the lock control turntable can be driven to rotate through the cooperation of the drive bar and the drive groove.

[0018] A spring is provided between the locking disc and the base;

[0019] A spring is installed between the stepper gear and the base;

[0020] A spring is installed between the button and the base;

[0021] The stepper gear has arc-shaped positioning teeth and stepping teeth on its side, which are located between the locking disc and the locking control disc.

[0022] A positioning hole is provided in the middle of the positioning tooth. A positioning pin is provided on the upper side wall of the outer shell, which extends downward and is rotatably connected to the positioning hole. The inner side of one end of the positioning tooth meshes with the stepping gear. A spring is provided on the outer side of one end of the positioning tooth. One end of the spring abuts against the positioning tooth, and the other end of the spring abuts against the inner wall of the outer shell. One end of the positioning tooth is provided with an upward protruding actuating protrusion.

[0023] A linkage hole is provided in the middle of the stepper tooth, and a downwardly extending linkage pin is provided on the lower side of the locking control turntable. The linkage pin is connected to the linkage hole. The rotation of the locking control turntable can drive the stepper tooth to move through the linkage pin. One end of the stepper tooth meshes with the stepper gear. The movement of the stepper tooth drives the stepper gear to rotate. A torsion spring is sleeved on the linkage pin. Under the action of the torsion spring, one end of the stepper tooth and the stepper gear are kept in a meshing state. A downwardly extending abutment part is provided on the lower side of the locking control turntable. The abutment part is located inside the stepper tooth. One end of the torsion spring abuts against the stepper tooth, and the other end of the torsion spring abuts against the abutment part. The collision between the actuating protrusion and the locking control turntable can limit the rotation of the locking control turntable.

[0024] The button includes a cylindrical section on the upper side and a square section on the lower side. The cylindrical section extends from a hole in the upper side wall of the housing. An annular mounting ring is provided on the inner side of the upper side wall of the housing, forming a mounting groove. The square section is adapted to the mounting groove. The four corners of the mounting groove are recessed to form rotation grooves, allowing the square section to rotate. The four corners of the square section rotate into the rotation grooves. A spring is also provided on the inner side of the upper side wall of the housing. The spring can apply elastic force to the square section, keeping the square section in the mounting groove.

[0025] The side wall of the casing is provided with an entry port corresponding to the locking port.

[0026] The present invention is further configured such that a protruding blocking part is provided on the inner sidewall of the outer shell, and the blocking part is correspondingly provided to the other end of the stepping tooth.

[0027] The present invention is further configured such that the positioning tooth is provided with a connecting groove for connecting spring four.

[0028] The present invention is further configured such that the stepping tooth is provided with a connecting groove 2 for connecting torsion spring.

[0029] The invention is further configured to include a locking block, which can be inserted into the socket, locking socket, or locking slot.

[0030] The present invention is further configured such that the upper side of the locking turntable abuts against the lower end of the mounting ring.

[0031] The present invention is further configured such that the base is provided with a connecting seat that is connected to the lower end of the lower connecting shaft.

[0032] By adopting the above technical solution, the beneficial effects of the present invention are as follows:

[0033] The keypad combination lock cylinder provided by this invention has a reasonable structural design and stable and reliable operation. It inputs a password by pressing a button, with the password being the number of times each button is pressed. Multiple lock cylinders can be used together to form a keypad combination lock with multiple keypad passwords.

[0034] Pressing the button once rotates the lock control turntable one step, which in turn moves the stepping teeth one step, which in turn drives the stepping gear to rotate one step. The stepping gear, through the positioning bead, drives the locking disc to rotate one step. By operating in this way, the locking disc rotates to the position corresponding to the locking slot and the locking socket, so that the locking block can enter the locking slot and the lock locked by the locking block can be opened, thus unlocking. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the structure of the present invention.

[0037] Figure 2 Cross-sectional view of the present invention Figure 1 .

[0038] Figure 3 Cross-sectional view of the present invention Figure 2 .

[0039] Figure 4 This is an exploded view of the present invention.

[0040] Figure 5 This is a schematic diagram of the structure of the base and locking disc of the present invention.

[0041] Figure 6 This is a schematic diagram of the structure of the base, locking disc, and stepper gear of the present invention.

[0042] Figure 7 This is a schematic diagram of the structure of the base, locking disc, stepper gear, stepper teeth, and positioning teeth of the present invention. Figure 1 .

[0043] Figure 8 This is a schematic diagram of the structure of the base, locking disc, stepper gear, stepper teeth, and positioning teeth of the present invention. Figure 2 .

[0044] Figure 9 This is a schematic diagram of the structure of the locking turntable, stepper gear, stepper teeth, and positioning teeth of the present invention.

[0045] Figure 10 This is a schematic diagram of the structure of the base, locking disc, stepper gear, stepper teeth, positioning teeth, and locking control turntable of the present invention.

[0046] Figure 11 This is a schematic diagram of the structure of the outer shell, button, and positioning teeth of the present invention.

[0047] Figure 12 This is a schematic diagram of the structure of the outer shell, button, spring, and rotating groove of the present invention.

[0048] Figure 13 This is a schematic diagram of the structure of the outer shell, locking turntable, stepping teeth, and positioning teeth of the present invention.

[0049] Figure 14This is an exploded view of the stepper gear, stepper teeth, and positioning teeth of the present invention.

[0050] Figure 15 This is an exploded view of the outer casing and buttons of the present invention.

[0051] Figure 16 This is a schematic diagram of the structure of the locking turntable of the present invention. Figure 1 .

[0052] Figure 17 This is a schematic diagram of the structure of the locking turntable of the present invention. Figure 2 . Detailed Implementation

[0053] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0054] For reference as follows Figures 1-17 The present invention will be described as follows:

[0055] Example: A keypad combination lock cylinder includes a base 1, which is a square plate structure. The upper side of the base 1 is provided with a shell 2, which is a rectangular structure. The shell 2 is hollow inside and open downwards. The four corners of the base 1 are fixedly connected to the shell 2 by screws.

[0056] The upper side of the base 1 is provided with a circular locking disc 3, and the upper side of the base 1 is provided with a circular limiting ring 6. The locking disc 3 is adapted to be connected inside the limiting ring 6, and the outer diameter of the locking disc 3 is equal to the inner diameter of the limiting ring 6.

[0057] The side wall of the limiting ring 6 is provided with a locking socket 7 that extends through both its inner and outer sides, and the side wall of the locking disc 3 is provided with a locking slot 8 corresponding to the locking socket 7. The side wall of the outer casing 2 is provided with an entry socket 36 corresponding to the locking socket 7.

[0058] The upper side of the locking disc 3 is provided with a circular stepping gear 4. The locking disc 3 and the stepping gear 4 are arranged abutting each other. A positioning bead 9 is provided between the locking disc 3 and the stepping gear 4. The positioning bead is fixedly connected to the locking disc 3. The stepping gear 4 is provided with a groove to accommodate the positioning bead 9. The upper side of the locking disc 3 is provided with an upwardly protruding annular convex ring. The convex ring is coaxial with the locking disc 3. The positioning bead 9 is set on the upper side of the convex ring. The positioning bead 9 has a hemispherical structure. The groove is adapted to the positioning bead 9. There are several positioning beads 9. Several positioning beads 9 are equidistantly arranged around the convex ring. Through the connection of the positioning beads 9, the locking disc 3 and the locking disc 3 can form a fixed connection in the circumference.

[0059] A locking control turntable 5 is provided on the upper side of the stepper gear 4, and a button is provided on the upper side of the locking control turntable 5. The upper side of the housing 2 has a hole for the upper end of the button to pass through. The locking disc 3, stepper gear 4, locking control turntable 5, and button are arranged coaxially and are located inside the housing 2.

[0060] The stepper gear 4 is provided with a limiting part 10 extending radially therefrom, and the limiting ring 6 is provided with a limiting part 21 protruding upward therefrom. The limiting part 10 and the limiting part 211 cooperate to limit the rotation of the stepper gear 4.

[0061] The lower side of the locking turntable 5 is provided with a lower connecting shaft 12, and the upper side of the locking turntable 5 is provided with an upper connecting shaft 13. The lower connecting shaft 12 extends into the stepper gear 4. The base 1 is provided with a connecting seat 41 that is connected to the lower end of the lower connecting shaft 12, and the upper connecting shaft 13 extends into the button.

[0062] A spiral drive bar 14 is provided on the outer side wall of the upper connecting shaft 13. The drive bar 14 is arranged in the vertical direction. The button is provided with a connecting cavity 15 connected to the upper connecting shaft 13. A spiral drive groove 16 is provided on the side wall of the connecting cavity 15. The drive bar 14 and the drive groove 16 are connected accordingly. When the button is pressed, the button moves up and down. The lock control turntable 5 can be driven to rotate by the cooperation of the drive bar 14 and the drive groove 16.

[0063] A spring 17 is provided between the locking disc 3 and the base 1, and the spring 17 applies an upward elastic force to the locking disc 3.

[0064] A second spring 18 is provided between the stepper gear 4 and the base 1. The second spring 18 applies an upward elastic force to the stepper gear 4 and passes through the middle of the locking disc 3.

[0065] A spring 19 is provided between the button and the base 1, and the spring 19 applies an upward elastic force to the button. The locking control turntable 5, the lower connecting shaft 12, and the lower connecting shaft 12 are coaxially arranged. The locking control turntable 5 and the lower connecting shaft 12 have holes for the spring 19 to pass through. The outer shell 2 can restrict the upward movement of the button and the locking control turntable 5. The stepper gear 4 and the locking control turntable 5 abut against each other in the vertical direction.

[0066] The locking disc 3, stepper gear 4, locking control turntable 5, and button are confined between the base 1 and the outer shell 2, and form a stable and compact structure in the vertical direction with the cooperation of spring 17, spring 28, and spring 319.

[0067] The stepper gear 4 has an arc-shaped positioning tooth 20 and a stepping tooth 21 on its side, which are located between the locking disc 3 and the locking control disc 5.

[0068] The positioning tooth 20 has a positioning hole 22 that runs through its upper and lower sides in the middle position. The upper side wall of the outer shell 2 has a positioning pin 23 that extends downward and is rotatably connected to the positioning hole 22. The positioning pin 23 plays the role of limiting and positioning the positioning tooth 20.

[0069] The inner side of one end of the positioning tooth 20 meshes with the stepper gear 4. A spring 24 is provided on the outer side of one end of the positioning tooth 20. One end of the spring 24 abuts against the positioning tooth 20, and the other end of the spring 24 abuts against the inner wall of the outer casing 2. A connecting groove 38 is provided on the positioning tooth 20 to connect the spring 24. The spring 24 applies elastic force to the positioning tooth 20, so that the inner side of one end of the positioning tooth 20 keeps meshing with the stepper gear 4, thus restricting the rotation of the stepper gear 4.

[0070] One end of the positioning tooth 20 is provided with an upwardly protruding actuating protrusion 25.

[0071] A linkage hole 26 is provided in the middle of the stepper tooth 21, and a linkage pin 27 extending downward is provided on the lower side of the locking control turntable 5. The linkage pin 27 is connected to the linkage hole 26. When the locking control turntable 5 rotates clockwise, it can drive the stepper tooth 21 to move through the linkage pin 27. One end of the stepper tooth 21 meshes with the stepper gear 4. The movement of the stepper tooth 21 drives the stepper gear 4 to rotate.

[0072] A torsion spring 28 is sleeved on the linkage pin 27 (the stepper tooth 21 is provided with a connecting groove 39 for installing the torsion spring 28). Under the action of the torsion spring 28, the torsion spring 28 applies a spring force to the stepper tooth 21, so that one end of the stepper tooth 21 is engaged with the stepper gear 4.

[0073] The lower side of the locking turntable 5 is provided with a downwardly extending abutment part 29. The abutment part 29 is located inside the stepping tooth 21. One end of the torsion spring 28 abuts against the stepping tooth 21, and the other end of the torsion spring 28 abuts against the abutment part 29.

[0074] The inner wall of the outer casing 2 is provided with a protruding blocking part 37, which is correspondingly arranged with the other end of the stepping tooth 21. When the locking turntable 5 rotates counterclockwise, it drives the stepping tooth 21 to move counterclockwise. Due to the blocking part 37, the stepping tooth 21 rotates around the linkage pin 27, and one end of the stepping tooth 21 separates from the meshing state of the stepping gear 4.

[0075] The collision between the actuating protrusion 25 and the locking dial 5 can limit the rotation of the locking dial 5.

[0076] When the stepper gear 4 rotates clockwise, it forces the positioning tooth 20 and the stepping tooth 21 to move aside and rotate. When the stepper gear 4 rotates counterclockwise, it will be blocked by the positioning tooth 20 and the stepping tooth 21 and will not be able to rotate.

[0077] The button includes a cylindrical segment 30 on the upper side and a square segment 31 on the lower side.

[0078] The cylindrical section 30 extends from a hole in the upper side wall of the outer casing 2.

[0079] An annular mounting ring 32 is provided on the inner side of the upper sidewall of the outer casing 2. The mounting ring 32 forms a mounting groove 33. The square segment 31 is adapted to the mounting groove 33. The four corners of the mounting groove 33 are recessed to form rotating grooves 34, so that the square segment 31 can rotate into the rotating groove 34. The four corners of the square segment rotate into the rotating groove 34. A spring piece 35 is also provided on the inner side of the upper sidewall of the outer casing 2. The spring piece 35 can apply elastic force to the square segment 31 to keep the square segment 31 in the state of being located in the mounting groove 33. When the button is rotated into the rotating groove 34 by external force, the external force is released, and under the action of the elastic force of the spring piece 35, the button returns to the mounting groove 33.

[0080] It also includes a locking block 40, which can be inserted into the socket 36, the locking socket 7, and the locking slot 8.

[0081] The upper side of the locking turntable 5 abuts against the lower end of the mounting ring 32.

[0082] Working principle:

[0083] Locking block 40 enters locking slot 8 to unlock, and locking block 40 exits locking slot 8 to lock.

[0084] Setting the password: Locking block 40 is in a state of circumferential restriction on locking disc 3 within the entry port 36, locking port 7, and locking slot 8, preventing locking disc 3 from rotating. At this time, pressing the button (which resets under the action of spring 19 after being pressed) causes the locking control turntable 5 to rotate clockwise, advancing stepping gear 21 one position clockwise, and stepping gear 4 correspondingly advancing one position clockwise. Assuming the button is pressed three times consecutively, stepping gear 4 advances three positions clockwise. At this time, spring 18 also twists accordingly, storing energy. During this process, as stepping gear 4 rotates, positioning bead 9 gradually disengages from the groove on stepping gear 4 and enters the next groove. Stepping gear 4 advances three positions, and positioning bead 9 crosses three grooves. During this process, locking disc 3 compresses spring 17 and moves downwards. After pressing, locking block 40 retracts. The energy stored in locking block 40 then drives stepping gear 4 and locking disc 3 to rotate three positions counterclockwise. The password setting is complete. The locking slot 8 rotates to the misaligned state of the locking socket 7, preventing the locking block 40 from entering the locking slot 8.

[0085] unlock:

[0086] When setting the password, the button is pressed 3 times. When unlocking, the button is pressed 3 times. At this time, the locking disc 3 will rotate 3 positions clockwise with the stepper gear 4, so that the locking slot 8 is aligned with the locking socket 7, and the locking block 40 can enter the locking slot 8, and the lock can be unlocked.

[0087] Multiple keypad combination lock cylinders as described in this application can be set in a combination lock cylinder. Multiple locking blocks 40 corresponding to keypad combination lock cylinders are provided on a lock tongue. In this way, the lock tongue can only move to unlock after the correct password has been entered in multiple keypad combination lock cylinders.

[0088] When it is time to release the stored energy from spring 18 and stepper gear 4 and return them to zero:

[0089] When the manual operation button is turned counterclockwise, the square segment 31 of the button rotates into the rotating groove 34. At this time, the locking control turntable 5 rotates counterclockwise and collides with the actuating protrusion 25, applying force to one end of the positioning tooth 20. The positioning tooth 20 rotates around the linkage pin 27, and one end of the positioning tooth 20 disengages from the engagement with the stepper gear 4. The counterclockwise rotation of the locking control turntable 5 drives the stepper tooth 21 to move counterclockwise. The other end of the stepper tooth 21 is blocked by the blocking part 37, and the stepper tooth 21 rotates around the linkage pin 27. The other end of the stepper tooth 21 passes over the blocking part 37, causing one end of the stepper tooth 21 to disengage from the engagement with the stepper gear 4. At this time, the energy-storing spring 18 and the stepper gear 4 automatically rotate to release the stored energy.

[0090] The button cannot be turned clockwise.

[0091] 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 principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A keypad combination lock cylinder, characterized in that: Includes a base (1), and an outer shell (2) is provided on the upper side of the base (1), and the outer shell (2) is hollow inside; The upper side of the base (1) is provided with a circular locking disc (3), the upper side of the locking disc (3) is provided with a circular stepping gear (4), the upper side of the stepping gear (4) is provided with a locking control turntable (5), the upper side of the locking control turntable (5) is provided with a button, and the upper side of the outer shell (2) is provided with a hole for the upper end of the button to pass through. The upper side of the base (1) is provided with an annular limiting ring (6), and the locking disc (3) is adapted to be connected inside the limiting ring (6). The side wall of the limiting ring (6) is provided with a locking socket (7), and the side wall of the locking disc (3) is provided with a locking slot (8) corresponding to the locking socket (7). The locking disc (3) and the stepper gear (4) are arranged to abut against each other. A positioning bead (9) is provided between the locking disc (3) and the stepper gear (4). The positioning bead is fixedly connected to the locking disc (3). The stepper gear (4) is provided with a groove to accommodate the positioning bead (9). The stepper gear (4) is provided with a limiting part 1 (10) extending radially therein, and the limiting ring (6) is provided with a limiting part 2 (11) protruding upward therein. The limiting part 1 (10) and the limiting part 2 (11) cooperate to limit the rotation of the stepper gear (4); The lower side of the lock control turntable (5) is provided with a lower connecting shaft (12), and the upper side of the lock control turntable (5) is provided with an upper connecting shaft (13). The lower connecting shaft (12) extends into the stepper gear (4), and the upper connecting shaft (13) extends into the button. The outer side wall of the upper connecting shaft (13) is provided with a spiral drive bar (14). The button is provided with a connecting cavity (15) connected to the upper connecting shaft (13). The side wall of the connecting cavity (15) is provided with a spiral drive groove (16). The drive bar (14) is connected to the drive groove (16). When the button is pressed, the lock control turntable (5) can be driven to rotate through the cooperation of the drive bar (14) and the drive groove (16). A spring (17) is provided between the locking disc (3) and the base (1); A spring 2 (18) is provided between the stepper gear (4) and the base (1); A spring three (19) is provided between the button and the base (1); The side of the stepper gear (4) is provided with arc-shaped positioning teeth (20) and stepping teeth (21), which are located between the locking disc (3) and the locking control turntable (5); A positioning hole (22) is provided in the middle of the positioning tooth (20). A positioning pin (23) is provided on the upper side wall of the outer shell (2) and extends downward and is rotatably connected to the positioning hole (22). The inner side of one end of the positioning tooth (20) meshes with the stepping gear (4). A spring four (24) is provided on the outer side of one end of the positioning tooth (20). One end of the spring four (24) abuts against the positioning tooth (20), and the other end of the spring four (24) abuts against the inner wall of the outer shell (2). One end of the positioning tooth (20) is provided with an upward protruding actuating protrusion (25). A linkage hole (26) is provided in the middle of the stepper tooth (21), and a linkage pin (27) extending downward is provided on the lower side of the locking turntable (5). The linkage pin (27) is connected to the linkage hole (26). The rotation of the locking turntable (5) can drive the stepper tooth (21) to move through the linkage pin (27). One end of the stepper tooth (21) meshes with the stepper gear (4). The movement of the stepper tooth (21) drives the stepper gear (4) to rotate. A torsion spring (28) is sleeved on the linkage pin (27). Under the action of the torsion spring (28), one end of the stepping tooth (21) is engaged with the stepping gear (4). The lower side of the locking control turntable (5) is provided with a downwardly extending abutment (29). The abutment (29) is located inside the stepping tooth (21). One end of the torsion spring (28) abuts against the stepping tooth (21), and the other end of the torsion spring (28) abuts against the abutment (29). The collision between the actuating protrusion (25) and the locking control turntable (5) can limit the rotation of the locking control turntable (5). The button includes a cylindrical section (30) on the upper side and a square section (31) on the lower side. The cylindrical section (30) extends out from a hole on the upper side wall of the housing (2). An annular mounting ring (32) is provided on the inner side of the upper side wall of the housing (2). The mounting ring (32) forms a mounting groove (33). The square section (31) is adapted to the mounting groove (33). The four corners of the mounting groove (33) are recessed to form a rotating groove (34), so that the square section (31) can rotate. The four corners of the square rotate into the rotating groove (34). The inner side of the upper side wall of the housing (2) is also provided with a spring piece (35). The spring piece (35) can apply a spring force to the square section (31) so that the square section (31) is kept in the state of being located in the mounting groove (33). The side wall of the outer casing (2) is provided with an entry port (36) corresponding to the locking port (7).

2. The keypad combination lock cylinder according to claim 1, characterized in that: The inner wall of the outer shell (2) is provided with a protruding blocking part (37), which is correspondingly provided at the other end of the stepping tooth (21).

3. The keypad combination lock cylinder according to claim 1, characterized in that: The positioning tooth (20) is provided with a connecting groove (38) for connecting spring four (24).

4. A keypad combination lock cylinder according to claim 1, characterized in that: The stepper tooth (21) is provided with a connecting groove 2 (39) for connecting torsion spring (28).

5. A keypad combination lock cylinder according to claim 1, characterized in that: It also includes a locking block (40) that can be inserted into a socket (36), a locking socket (7), or a locking slot (8).

6. A keypad combination lock cylinder according to claim 1, characterized in that: The upper side of the lock control turntable (5) abuts against the lower end of the mounting ring (32).

7. A keypad combination lock cylinder according to claim 1, characterized in that: The base (1) is provided with a connecting seat (41) that is connected to the lower end of the lower connecting shaft (12).

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