A modular lock cylinder and lock

Abstract

This invention provides a modular lock cylinder and lock, belonging to the field of lock accessory technology. It includes an extension module, a lock head module, a lock shell module, and a lock base module. The extension module is positioned between the lock head module and the lock shell module. One side of the extension module engages with the surface of the lock head module, and the other side engages with the surface of the lock shell module. A connecting shaft is provided at the bottom of the lock head module, and a locking structure is provided at one end of the lock base module. The extension module includes extension seats, and each of the three sets of extension seats has a connecting mechanism within its inner cavity. The three sets are connected by the connecting mechanism. The lock head module and the lock shell module are also connected by the connecting mechanism. This shortens the user's assembly work for the lock cylinder components, simplifies the assembly process, prevents parts from scattering or falling off, and facilitates the addition and modification of lock cylinder accessories.

Description

Technical Field

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

[0002] The lock cylinder is the core component of a lock, responsible for controlling its opening. It employs multiple anti-theft technologies, including various irregularly shaped anti-picking pins and a precision numbered pin structure, providing high security against technical unlocking. The lock cylinder, through its multiple combinations of irregularly shaped pins, can program billions of key combinations, achieving zero cross-keying within a given area. Furthermore, the lock cylinder incorporates a lateral inward-pressing side pin locking device, enhancing its ability to prevent forced twisting.

[0003] Existing lock cylinders generally consist of several components, including the lock head, connecting shaft, lock head housing, and lock seat. Since lock cylinders need to be installed on security doors, and existing security doors vary in thickness, when the lock cylinder is not long enough, it needs to be disassembled, and then an extension piece added before reassembly. Because the parts are scattered after disassembly, users need to spend a considerable amount of time assembling the internal components, increasing the difficulty of assembling the lock cylinder. Furthermore, the large number of parts makes it easy for them to fall out, causing inconvenience for adding or modifying lock cylinder accessories.

[0004] To address the aforementioned technical issues, a lock cylinder, as disclosed in CN213539994U, includes a lock shell, a lock cylinder, a locking device, and a lever sleeve. The lock cylinder has a keyhole, and an actuating element extends from its tail end. The lever sleeve contains a locking portion that engages with the actuating element and a cavity for the actuating element to rotate freely. When the lock cylinder rotates, the actuating element rotates a certain angle within the cavity and then contacts the locking portion, causing the lever sleeve to rotate. This type of lock cylinder is less prone to jamming and free-spinning, effectively prevents foreign objects from entering deep within the lock cylinder, and has a simple structure, is easy to manufacture, and has low production costs.

[0005] As described above, when the length of the lock cylinder is insufficient, it needs to be disassembled, and then an extension piece needs to be added before reassembly. Because the parts are too scattered after disassembly, users need to spend a lot of time assembling the parts inside the lock cylinder, which increases the difficulty of assembling the lock cylinder. At the same time, with many parts, it is easy for parts to fall off, which brings inconvenience to the addition and modification of lock cylinder accessories. Therefore, we need to propose a modular lock cylinder and lock. Summary of the Invention

[0006] The purpose of this invention is to provide a modular lock cylinder and lock. By cooperating with an extension module, a lock head module, a lock shell module, and a lock base module, the internal structure of the lock cylinder is modularized, preventing parts from scattering after disassembly. Through the cooperation of the extension base and the connecting mechanism, the lock head module and the lock shell module can be quickly connected and assembled. With the three sets of extension bases, extension bases of different thicknesses can be added according to the thickness of the security door, and the three sets of extension bases can be arbitrarily combined and disassembled. This extension of the lock cylinder shortens the user's assembly work, simplifies the assembly process, prevents parts from scattering or falling, and facilitates the addition and modification of lock cylinder accessories, thus solving the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a modular lock cylinder, comprising an extension module, a lock head module, a lock shell module, and a lock base module. The extension module is disposed between the lock head module and the lock shell module. One side of the extension module engages with the surface of the lock head module, and the other side of the extension module engages with the surface of the lock shell module. One end of the lock base module is provided with a locking structure to facilitate locking with the lock shell module. The extension module includes extension seats, and three sets of extension seats are provided. Each of the three sets of extension seats has a through hole on its surface, and each of the three sets of extension seats has a connecting mechanism in its inner cavity. The three sets of extension seats are connected to each other through the connecting mechanism. The lock head module and the lock shell module are connected through the connecting mechanism.

[0008] For example, the connecting mechanism includes a support tube disposed in the inner cavity of the extension seat. One end of the support tube is fixedly connected to a locking block, the surface of which engages with the lock head module. The other end of the support tube is provided with a first locking groove, the inner cavity of which engages with the surfaces of the locking block and the lock housing module respectively. The outer surface of the support tube is provided with a first retaining ring, and the inner cavity of the support tube is provided with an adjustment structure.

[0009] For example, the adjustment structure includes a support pin, which is inserted and movable within the inner cavity of the support tube. An adjustment groove is formed on the surface of the support pin, and a support hole is formed on the surface of the support tube. A pin is provided in the inner cavity of the support hole, and the bottom end of the pin is slidably connected to the inner cavity of the adjustment groove.

[0010] For example, the bottom of each of the three sets of extension seats is provided with a first positioning pin, one end of the first positioning pin is provided with a first positioning hole, the inner cavity of the first positioning hole is engaged with the other end of the first positioning pin, and the lock head shell is provided with a first connecting hole on the side near the extension module, the inner cavity of the first connecting hole is engaged with the first positioning pin.

[0011] For example, the lower surface of the extension seat is provided with an arc-shaped groove, and the inner cavity of the arc-shaped groove fits against the surface of the connecting shaft.

[0012] For example, the lock cylinder module includes a lock cylinder housing, a first support groove is provided at the bottom end of the lock cylinder housing, the inner cavity of the first support groove is engaged with one end of the connecting shaft, a lock cylinder shaft is provided in the inner cavity of the lock cylinder housing, and a second slot is provided at the end of the lock cylinder shaft near the extension module, the inner cavity of the second slot is engaged with a locking block.

[0013] For example, the lock housing module includes a lock housing base, one end of which is provided with a lever, and the end of the lever away from the lock housing base is fixedly connected to a retaining seat. The surface of the retaining seat engages with the inner cavity of a first retaining groove. The other end of the lever is provided with a connecting groove, the inner cavity of which engages with the surface of the lock housing base. The bottom end of the lock housing base is provided with a second support groove, the inner cavity of which engages with the surface of a connecting shaft.

[0014] For example, the lock base module includes a lock base housing, one end of which is provided with a deadbolt module, and the other end of which is provided with an extension sleeve. The extension sleeve is provided in three sets, and the bottom end of each of the three sets of extension sleeves is provided with a second positioning pin. One end of the second positioning pin is provided with a second positioning hole, and the inner cavity of the second positioning hole engages with the other end of the second positioning pin. The lock head housing is provided with a second connecting hole on the side near the extension module, and the inner cavity of the second connecting hole engages with a first positioning pin.

[0015] For example, the locking structure includes a bolt hole, a fixing hole, and a threaded hole. The bolt hole is provided on the surface of the lock seat housing, and a locking screw is provided in the inner cavity of the threaded hole. The fixing hole is provided on the surface of the extension sleeve, and the threaded hole is provided on the surface of the lock housing seat. One end of the locking screw passes through the fixing hole and is threadedly connected to the inner cavity of the threaded hole.

[0016] A lock comprising a modular lock cylinder as described in any of the above.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] This invention provides a modular lock cylinder and lock. By combining an extension module, a lock head module, a lock shell module, and a lock base module, the internal structure of the lock cylinder is modularized, preventing parts from scattering after disassembly. The extension base and connecting mechanism allow for quick connection and assembly between the lock head module and the lock shell module. The three sets of extension bases allow for the addition of extension bases of varying thicknesses to suit different security door thicknesses, and these three sets can be freely combined and disassembled. This extension of the lock cylinder reduces the user's assembly workload, simplifies assembly, prevents parts from scattering or falling, and facilitates the addition and modification of lock cylinder accessories.

[0019] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description and the drawings. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall component structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the lock cylinder and extension module after assembly according to the present invention;

[0022] Figure 3 This is a schematic diagram of the modular disassembly structure of the present invention;

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

[0024] Figure 5 This is a schematic diagram of the disassembly structure of the connecting mechanism of the present invention;

[0025] Figure 6 This is a schematic diagram of the structure for disassembling the lock cylinder shaft of the lock head housing according to the present invention;

[0026] Figure 7 This is a schematic diagram of the right side view of the locking housing module of the present invention;

[0027] Figure 8 This is a schematic diagram of the locking housing module of the present invention from the left view;

[0028] Figure 9 This is a schematic diagram of the structure of the dial plate of the present invention;

[0029] Figure 10 This is a structural diagram showing the disassembled structure of the lock seat module of the present invention.

[0030] In the diagram: 1. Extension module; 11. Extension base; 12. Connecting mechanism; 121. Support tube; 122. Locking block; 123. First slot; 124. First retaining ring; 125. Adjustment structure; 1251. Support pin; 1252. Adjustment groove; 1253. Support hole; 1254. Pin; 2. Lock head module; 21. Lock head housing; 22. First support groove; 23. Lock cylinder shaft; 24. Second slot; 3. Lock case module; 31. Lock case base; 3 2. Dial plate; 33. Card holder; 34. Connecting groove; 35. Second support groove; 4. Lock seat module; 41. Lock seat housing; 42. Reverse locking module; 43. Extension sleeve; 44. Second positioning pin; 45. Second positioning hole; 46. Second connecting hole; 5. Connecting shaft; 6. Locking structure; 61. Bolt hole; 62. Fixing hole; 63. Threaded hole; 64. Locking screw; 7. First positioning pin; 8. First positioning hole; 9. First connecting hole; 10. Arc groove. Detailed Implementation

[0031] 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.

[0032] Please see Figure 1-10 This invention provides a modular lock cylinder, including an extension module 1, a lock head module 2, a lock housing module 3, and a lock base module 4. The extension module 1 is disposed between the lock head module 2 and the lock housing module 3. One side of the extension module 1 engages with the surface of the lock head module 2, and the other side of the extension module 1 engages with the surface of the lock housing module 3. A connecting shaft 5 is provided at the bottom end of the lock head module 2. A locking structure 6 is provided at one end of the lock base module 4 to facilitate locking with the lock housing module 3. The extension module 1 includes an extension seat 11, and three sets of extension seats 11 are provided. All surfaces are provided with through holes, and the inner cavities of the three sets of extension seats 11 are provided with connecting mechanisms 12. The three sets of extension seats 11 are connected to each other through the connecting mechanisms 12. The lock head module 2 and the lock shell module 3 are connected through the connecting mechanisms 12. The thickness of the three sets of extension seats 11 is different, and the thickness of the three sets of extension seats 11 increases sequentially. The three sets of extension seats 11 can be arbitrarily combined and disassembled to extend the overall length of the lock cylinder. At the same time, connecting shafts 5 of different lengths can be added according to the distance between the lock shell module 3 and the lock head module 2 for assembly.

[0033] Specifically, the internal components of the lock cylinder are modularized through the cooperation of extension module 1, lock cylinder module 2, lock shell module 3, and lock base module 4. This prevents internal parts from scattering during lock cylinder disassembly. The extension base 11 and connecting mechanism 12 allow for quick connection and assembly between lock cylinder module 2 and lock shell module 3. The three extension bases 11 allow for the addition of extension bases of varying thicknesses to suit different security door thicknesses, and these three sets can be freely combined and disassembled. This extension of the lock cylinder shortens the assembly process for the user, simplifies assembly, prevents parts from scattering or falling, and facilitates the addition and modification of lock cylinder accessories.

[0034] Preferably, the connecting mechanism 12 includes a support tube 121, which is disposed in the inner cavity of the extension seat 11. One end of the support tube 121 is fixedly connected to a locking block 122, the surface of which engages with the lock head module 2. The other end of the support tube 121 has a first locking groove 123, the inner cavity of which engages with both the locking block 122 and the surface of the lock housing module 3. A first retaining ring 124 is provided on the outer surface of the support tube 121, and an adjustment mechanism is provided in the inner cavity of the support tube 121. When assembling the extension base 11, take one set of extension base 11 and fit it against the surface of another set of extension base 11, so that the locking block 122 is inserted into the inner cavity of the first locking groove 123, so that the extension base 11 can be engaged and locked together, and the three sets of extension base 11 can be arbitrarily combined and disassembled to extend the overall length of the lock cylinder. At the same time, the inner cavity of the extension base 11 is also provided with a retaining ring groove. The retaining ring groove and the first retaining ring 124 cooperate to position the support tube 121 in the inner cavity of the extension base 11.

[0035] Furthermore, the adjustment structure 125 includes a support pin 1251, which is inserted and movable within the inner cavity of the support tube 121. An adjustment groove 1252 is formed on the surface of the support pin 1251, and a support hole 1253 is formed on the surface of the support tube 121. A pin 1254 is provided in the inner cavity of the support hole 1253. The bottom end of the pin 1254 is slidably connected to the inner cavity of the adjustment groove 1252. Through the cooperation of the support hole 1253, the pin 1254, and the adjustment groove 1252, the support pin 1251 is restricted within the inner cavity of the support tube 121, limiting the movement of the support pin 1251 within the support tube 121 and preventing the support pin 1251 from moving out of the inner cavity of the support tube 121.

[0036] In addition, each of the three sets of extension seats 11 is provided with a first positioning pin 7 at its bottom end. One end of the first positioning pin 7 is provided with a first positioning hole 8. The inner cavity of the first positioning hole 8 is engaged with the other end of the first positioning pin 7. The lock head shell 21 is provided with a first connecting hole 9 on the side near the extension module 1. The inner cavity of the first connecting hole 9 is engaged with the first positioning pin 7. Through the cooperation of the first positioning pin 7 and the first positioning hole 8, when the extension seats 11 are assembled, the first positioning pin 7 on the extension seat 11 is inserted into the inner cavity of the first positioning hole 8, which provides initial support for the combined state of the two sets of extension seats 11 and prevents the position from shifting after assembly. Through the cooperation of the first positioning pin 7 and the first connecting hole 9, the combined state of the extension module 1 and the lock head module 2 is supported, which improves the stability of the combined extension module 1 and the lock head module 2.

[0037] Furthermore, an arc-shaped groove 10 is provided on the lower surface of the extension seat 11. The inner cavity of the arc-shaped groove 10 fits against the surface of the connecting shaft 5. The arc-shaped groove 10 increases the fit between the lower surface of the extension seat 11 and the connecting shaft 5, allowing the bottom end of the extension seat 11 to support the top end of the connecting shaft 5, thereby improving the stability of the connecting shaft 5 within the lock cylinder.

[0038] In a further preferred embodiment, the lock cylinder module 2 includes a lock cylinder housing 21. A first support groove 22 is provided at the bottom end of the lock cylinder housing 21. The inner cavity of the first support groove 22 is engaged with one end of the connecting shaft 5. A lock cylinder shaft 23 is provided in the inner cavity of the lock cylinder housing 21. A second slot 24 is provided at the end of the lock cylinder shaft 23 near the extension module 1. The inner cavity of the second slot 24 is engaged with the locking block 122. The first support groove 22 is used to support and fix one end of the connecting shaft 5. Through the cooperation between the second slot 24 on the lock cylinder shaft 23 and the locking block 122, the lock cylinder shaft 23 and the extension seat 11 can be quickly assembled. At the same time, when the key is inserted into the lock cylinder shaft 23 and rotated, the second slot 24 can drive the locking block 122 to rotate, causing the support tube 121 in the extension seat 11 to rotate. The support tube 121 drives the lock housing module 3 to rotate through the first slot 123 at the other end, so that the lock cylinder can work.

[0039] Specifically, the lock housing module 3 includes a lock housing base 31. A lever 32 is provided at one end of the lock housing base 31. A retaining seat 33 is fixedly connected to the end of the lever 32 away from the lock housing base 31. The surface of the retaining seat 33 engages with the inner cavity of the first retaining groove 123. A connecting groove 34 is provided at the other end of the lever 32. The inner cavity of the connecting groove 34 engages with the surface of the lock housing base 31. A second support groove 35 is provided at the bottom end of the lock housing base 31. The inner cavity of the second support groove 35 engages with the surface of the connecting shaft 5. Through the engagement of the retaining seat 33 and the first retaining groove 123, the extension... The support tube 121 inside the seat 11 rotates, which drives the seat 33 to rotate through the first slot 123, causing the lever 32 at the other end of the seat 33 to rotate. The rotation of the lever 32 drives the parts inside the lock housing 31 to rotate through the connecting slot 34. The second support slot 35 at the bottom of the lock housing 31 can support the other end of the connecting shaft 5, improving the stability of the connecting shaft 5 in the lock cylinder. The connecting shaft 5 is connected to the lock cylinder by plugging, which simplifies the installation work between the connecting shaft 5 and the lock cylinder and provides convenience for the assembly work of the connecting shaft 5 and the lock cylinder.

[0040] Furthermore, the lock base module 4 includes a lock base housing 41. One end of the lock base housing 41 is provided with a deadbolt module 42, and the other end is provided with an extension sleeve 43. Three sets of extension sleeves 43 are provided, and each of the three sets of extension sleeves 43 has a second positioning pin 44 at its bottom. One end of the second positioning pin 44 has a second positioning hole 45, the inner cavity of which engages with the other end of the second positioning pin 44. The lock head housing 21 has a second connecting hole 46 on the side near the extension module 1, the inner cavity of which engages with the second positioning pin 44. The lock base housing 41 and the lock housing seat 31 are locked together. Structure 6 is connected, and the thickness of the three sets of extension sleeves 43 increases sequentially. One end of the extension sleeve 43 is fixedly connected to a fixing ring, and the other end of the extension sleeve 43 is provided with a fixing groove. The fixing ring and the inner cavity of the fixing groove are engaged. Through the engagement of the fixing ring and the fixing groove, the top end of the assembled extension sleeve 43 can be supported. Through the engagement of the second positioning pin 44 and the second positioning hole 45, when the two sets of extension sleeves 43 are assembled, the bottom end of the combined extension sleeve 43 can be supported by inserting the second positioning pin 44 into the inner cavity of the second positioning hole 45, thereby improving the stability of the combined extension sleeves 43.

[0041] Additionally, the locking structure 6 includes a bolt hole 61, a fixing hole 62, and a threaded hole 63. The bolt hole 61 is located on the surface of the lock seat housing 41. A locking screw 64 is installed inside the threaded hole 63. The fixing hole 62 is located on the surface of the extension sleeve 43. The threaded hole 63 is located on the surface of the lock housing 31. One end of the locking screw 64 passes through the fixing hole 62 and is threaded into the inner cavity of the threaded hole 63. A fixing block is located at the bottom of the lock seat housing 41. The fixing block engages with the inner cavity of the second positioning hole 45. The combination of 5 enhances the stability of the lock seat housing 41 and the extension sleeve housing 43 after assembly. After assembling the extension sleeve housing 43 and the lock seat housing 41, it is then assembled with the lock housing seat 31. The second positioning small is inserted into the inner cavity of the second connecting hole 46 to complete the assembly. Then, the length between the lock housing seat 31 and the lock seat housing 41 is determined by taking locking screws 64 of different lengths, inserting the locking screws 64 into the bolt hole 61, passing through the fixing hole 62 and extending into the inner cavity of the threaded hole 63, and then locking them to fix the lock seat housing 41 and the lock housing seat 31 together.

[0042] The present invention also provides a lock, comprising a modular lock cylinder including any of the above.

[0043] In practical use, during assembly, the lock cylinder is modified according to the thickness of the security door to be fitted with the lock cylinder. First, the extension base 11 is combined with the lever plate 32, so that the latch 33 on the lever plate 32 engages with the first latch 123. When increasing the thickness, the number of extension bases 11 is increased, so that the latch block 122 engages with the first latch 123, and the support tube 121 inside the extension base 11 is connected. At the same time, the first positioning pin 7 at the bottom is inserted into the inner cavity of the first positioning hole 8 to support the extension base 11 after assembly. Then, the connecting shaft 5 is removed and inserted into the second support groove 35. The lock cylinder housing 21 is covered, so that the first support groove 22 engages with the other end of the connecting shaft 5, and the second latch 24 of the lock cylinder shaft 23 engages with the latch block 122. At the same time, the first positioning pin 7 can be inserted into the lock cylinder housing. The inner cavity of the 21 through hole is supported to complete the assembly between the lock head module 2, the extension module 1 and the lock shell module 3. When assembling the lock seat module 4, the extension sleeve 43 and the lock seat shell 41 are assembled. When extending the length, the number of extension sleeves 43 is increased. When assembling the two sets of extension sleeves 43, the bottom end of the assembled extension sleeve 43 can be supported by inserting the second positioning pin 44 into the inner cavity of the second positioning hole 45. The top end of the assembled extension sleeve 43 can be supported by the cooperation of the fixing ring and the fixing groove. Finally, it is assembled with the lock shell seat 31. The locking screw 64 is inserted into the bolt hole 61, passes through the fixing hole 62 and extends to the inner cavity of the threaded hole 63, and then locked to fix the lock seat shell 41 and the lock shell seat 31, thereby completing the modular assembly.

[0044] In use, inserting the key into the lock cylinder shaft 23 and turning it rotates the second slot 24, causing the locking block 122 to rotate. This rotates the support tube 121 inside the extension seat 11, which in turn rotates the lock housing module 3 through the first slot 123 at the other end. This causes the parts inside the lock cylinder housing 21 and the lock housing seat 31 to rotate. When deadbolting, twisting the deadbolt module 42 rotates the support plate, causing the other end of the support plate to rotate within the lock housing seat 31. This causes the parts inside the lock housing seat 31 to rotate, and the lock housing module 3 begins to operate. This reduces the user's assembly work for the lock cylinder parts, simplifies the assembly process, prevents parts from scattering or falling off, and facilitates the addition and modification of lock cylinder accessories.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A modular lock cylinder, comprising an extension module (1), a lock head module (2), a lock shell module (3), and a lock base module (4), characterized in that: The extension module (1) is disposed between the lock head module (2) and the lock shell module (3). One side of the extension module (1) is engaged with the surface of the lock head module (2), and the other side of the extension module (1) is engaged with the surface of the lock shell module (3). The bottom end of the lock head module (2) is provided with a connecting shaft (5). One end of the lock seat module (4) is provided with a locking structure (6) to facilitate locking with the lock shell module (3). The extension module (1) includes an extension seat (11). The extension seat (11) is provided in three sets. The surface of each of the three sets of extension seats (11) is provided with a through hole. The inner cavity of each of the three sets of extension seats (11) is provided with a connecting mechanism (12). The three sets of extension seats (11) are connected to each other through the connecting mechanism (12). The lock head module (2) and the lock shell module (3) are connected through the connecting mechanism (12). The connecting mechanism (12) includes a support tube (121), which is disposed in the inner cavity of the extension seat (11). One end of the support tube (121) is fixedly connected to a locking block (122), the surface of the locking block (122) engages with the lock head module (2), and the other end of the support tube (121) is provided with a first locking groove (123). The inner cavity of the first locking groove (123) engages with the surfaces of the locking block (122) and the lock shell module (3) respectively. The outer surface of the support tube (121) is provided with a first locking ring (124), and the inner cavity of the support tube (121) is provided with an adjustment structure (125). The adjustment structure (125) includes a support pin (1251), which is inserted and movable in the inner cavity of the support tube (121). An adjustment groove (1252) is provided on the surface of the support pin (1251), and a support hole (1253) is provided on the surface of the support tube (121). A pin (1254) is provided in the inner cavity of the support hole (1253), and the bottom end of the pin (1254) is slidably connected to the inner cavity of the adjustment groove (1252). The lock cylinder module (2) includes a lock cylinder housing (21). A first support groove (22) is provided at the bottom end of the lock cylinder housing (21). The inner cavity of the first support groove (22) is engaged with one end of the connecting shaft (5). A lock cylinder shaft (23) is provided in the inner cavity of the lock cylinder housing (21). A second slot (24) is provided at one end of the lock cylinder shaft (23) near the extension module (1). The inner cavity of the second slot (24) is engaged with the locking block (122).

2. A modular lock cylinder according to claim 1, characterized in that: The bottom of each of the three sets of extension seats (11) is provided with a first positioning pin (7). One end of the first positioning pin (7) is provided with a first positioning hole (8). The inner cavity of the first positioning hole (8) is engaged with the other end of the first positioning pin (7). The lock housing (21) is provided with a first connecting hole (9) on the side close to the extension module (1). The inner cavity of the first connecting hole (9) is engaged with the first positioning pin (7).

3. A modular lock cylinder according to claim 2, characterized in that: The lower surface of the extension seat (11) is provided with an arc-shaped groove (10), and the inner cavity of the arc-shaped groove (10) is in contact with the surface of the connecting shaft (5).

4. A modular lock cylinder according to claim 1, characterized in that: The lock housing module (3) includes a lock housing seat (31). One end of the lock housing seat (31) is provided with a lever (32). The end of the lever (32) away from the lock housing seat (31) is fixedly connected to a retainer (33). The surface of the retainer (33) engages with the inner cavity of the first retainer groove (123). The other end of the lever (32) is provided with a connecting groove (34). The inner cavity of the connecting groove (34) engages with the surface of the lock housing seat (31). The bottom end of the lock housing seat (31) is provided with a second support groove (35). The inner cavity of the second support groove (35) engages with the surface of the connecting shaft (5).

5. A modular lock cylinder according to claim 1, characterized in that: The lock base module (4) includes a lock base shell (41). One end of the lock base shell (41) is provided with a deadbolt module (42), and the other end of the lock base shell (41) is provided with an extension sleeve (43). The extension sleeve (43) is provided in three sets. The bottom end of each of the three sets of extension sleeves (43) is provided with a second positioning pin (44). One end of the second positioning pin (44) is provided with a second positioning hole (45). The inner cavity of the second positioning hole (45) is engaged with the other end of the second positioning pin (44). The lock head shell (21) is provided with a second connecting hole (46) on the side near the extension module (1). The inner cavity of the second connecting hole (46) is engaged with the first positioning pin (7).

6. A modular lock cylinder according to claim 1, characterized in that: The locking structure (6) includes a bolt hole (61), a fixing hole (62), and a threaded hole (63). The bolt hole (61) is provided on the surface of the lock seat housing (41). The inner cavity of the threaded hole (63) is provided with a locking screw (64). The fixing hole (62) is provided on the surface of the extension sleeve (43). The threaded hole (63) is provided on the surface of the lock housing (31). One end of the locking screw (64) passes through the fixing hole (62) and is threadedly connected to the inner cavity of the threaded hole (63).

7. A lock, characterized in that: Includes a modular lock cylinder as described in any one of claims 1-6.

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