A lock cylinder extension and lock

Abstract

The application discloses a lock cylinder extension and a lock, which comprises a lock cylinder body; the first growth mechanism and the second growth mechanism are matched to realize the advantages of increasing and decreasing the actual length of the lock cylinder to correspond to different door thicknesses; the first growth mechanism and the second growth mechanism are increased and decreased according to different thicknesses to facilitate the adaptation of the door body; the operation is simple, there are no spare parts, and therefore the subsequent random increase and decrease adaptation for use is facilitated, and the disassembly, replacement and maintenance work of people are facilitated; the increase and decrease mode is adopted to achieve the increase and decrease operation of the required lock cylinder length; the thicknesses of the first growth mechanism and the second growth mechanism are diversified to facilitate the satisfaction of the needs of people and different thicknesses of the door body, so as to ensure the actual adaptation and use effect; the lock cylinder body, the supporting mechanism, the first shell mechanism and the second shell mechanism are matched to facilitate the increase and decrease operation of the first growth mechanism and the second growth mechanism.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of door locks, in particular to a lock cylinder extension and a lock. BACKGROUND

[0002] The gourd lock cylinder is a door lock cylinder, which is similar in shape to a gourd ladle, hence the name. The gourd lock cylinder is the core technology of door unlocking, mainly used to resist prying, unlocking and other destructive behaviors. The gourd lock cylinder adopts a complex encryption system design, especially a double-sided lock cylinder, which can greatly improve the anti-theft performance of the door lock.

[0003] The gourd lock cylinder is mainly used for door locks and furniture locks. The large gourd lock cylinder is usually used for locks of drawers, cabinets, furniture and other household items.

[0004] In the prior art, the lock cylinder cannot be extended and adjusted. Since manufacturers produce lock cylinders of different lengths to adapt to door bodies of different thicknesses, the existing lock cylinder size can only adapt to the corresponding door body and cannot increase or decrease the length of the lock cylinder. When disassembling and replacing, there are many parts, which is not conducive to assembly and disassembly, causing maintenance difficulties and inconvenience in length adjustment operations. SUMMARY

[0005] The purpose of the present application is to provide a lock cylinder extension and a lock, which has the advantages of conveniently and quickly increasing or decreasing the actual length of the lock cylinder, facilitating the user to disassemble, maintain and replace the operation, and the operation is simple, without the phenomenon of parts scattering, and the length of the lock cylinder is increased or decreased according to the actual needs and adapted to the corresponding door body, to solve the problems raised in the background art.

[0006] To achieve the above purpose, the present application provides the following technical scheme: a lock cylinder extension and a lock, comprising a lock cylinder main body;

[0007] The bottom of the lock cylinder main body is provided with a support mechanism for external connection, one end of the support mechanism is provided with a first growth mechanism for convenient replacement, one end of the first growth mechanism is provided with a first housing mechanism for adaptive installation, the other end of the support mechanism is provided with a second growth mechanism for convenient replacement, and one end of the second growth mechanism is provided with a second housing mechanism for adaptive installation;

[0008] The first growth mechanism comprises a first mounting assembly and a first locking assembly, the first mounting assembly is arranged at one end of the support mechanism, and the first locking assembly is arranged on the outer side of the first mounting assembly;

[0009] The second growth mechanism comprises a second mounting assembly and a second locking assembly, the second mounting assembly is arranged at the other end of the support mechanism, and the second locking assembly is arranged on the outer side of the second mounting assembly;

[0010] The first shell mechanism comprises a first bearing assembly and a first external connecting assembly, the first bearing assembly is arranged at one end of the first growth mechanism, and the first external connecting assembly is arranged at the top of the first bearing assembly.

[0011] The second shell mechanism comprises a second bearing assembly and a second external connecting assembly, the second bearing assembly is arranged at one end of the second growth mechanism, and the second external connecting assembly is arranged at the top of the second bearing assembly.

[0012] The length of the lock cylinder is adjusted by increasing or decreasing the first growth mechanism and the second growth mechanism with different thicknesses, and the length of the lock cylinder is adjusted and disassembled according to the actual thickness.

[0013] Illustratively, the support mechanism comprises a base fixedly installed at the bottom of the lock cylinder body, and first joints are fixedly installed at both ends of the base.

[0014] Illustratively, the first mounting assembly comprises a first connecting pipe sleeved outside the first joint at one end, and a second joint is fixedly installed at one end of the first connecting pipe.

[0015] Illustratively, the first locking assembly comprises a second bolt threadedly connected at the bottom of the first connecting pipe, and the first connecting pipe is bolted with a first growth sleeve through the second bolt.

[0016] Illustratively, the second mounting assembly comprises a second connecting pipe sleeved outside the first joint at the other end, and a third joint is fixedly installed at one end of the second connecting pipe.

[0017] Illustratively, the second locking assembly comprises a fourth bolt threadedly connected at the bottom of the second connecting pipe, and the second connecting pipe is bolted with a second growth sleeve through the fourth bolt, the second growth sleeve is internally provided with a connecting block, and the outer surface of the connecting block is sleeved with a connecting ring.

[0018] Illustratively, the first bearing assembly comprises a first mounting sleeve sleeved outside the second joint, a first connecting rod is fixedly installed at one end of the first mounting sleeve, a third bolt is threadedly connected at the bottom of the first mounting sleeve, and the first mounting sleeve is bolted with the second joint through the third bolt.

[0019] The first external connecting assembly comprises a first housing sleeved outside the first connecting rod, the first housing is internally provided with a first inner core, and the first housing is bolted with the first housing through the third bolt.

[0020] Exemplarily, the second bearing assembly comprises a second mounting sleeve sleeved outside the second joint, one end of the second mounting sleeve is fixedly provided with a second connecting rod, and the bottom of the second mounting sleeve is threadedly connected with a first bolt.

[0021] The second external connecting assembly comprises a second housing sleeved outside the second connecting rod, the inside of the second housing is provided with a second inner core, and the second mounting sleeve is bolted with the second housing through the first bolt.

[0022] Exemplarily, one side of the lock cylinder body is inserted with a dial, and the dial is located between the lock cylinder body and the first extension sleeve.

[0023] A lock comprises the lock cylinder extension.

[0024] Compared with the prior art, the lock cylinder extension has the following beneficial effects:

[0025] The first extension mechanism and the second extension mechanism are used to increase or decrease the actual length of the lock cylinder, so as to correspond to different door body thicknesses. The first extension mechanism and the second extension mechanism are increased or decreased according to different thicknesses to facilitate the adaptation of the door body. The operation is simple, there are no spare parts, and the subsequent random increase or decrease is facilitated. The lock cylinder length is increased or decreased, the thickness of the first extension mechanism and the second extension mechanism is diversified, the needs of people and different thicknesses of the door body are met, the actual adaptation and use effect are ensured, the lock cylinder body, the supporting mechanism, the first housing mechanism and the second housing mechanism are used in cooperation, the first extension mechanism and the second extension mechanism are adapted to increase or decrease, the stability after installation is ensured, and normal use is ensured.

[0026] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the application. The objects and other advantages of the present application will be realized and achieved by the structures indicated in the specification and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 The structure of the present application is shown in the figure;

[0028] Figure 2 The split structure of the present application is shown in the figure;

[0029] Figure 3 The explosion structure of the present application is shown in the figure;

[0030] Figure 4 The base structure of the present application is shown in the figure;

[0031] Figure 5 Figure 1 is a schematic diagram of a first growth sleeve structure of the present application;

[0032] Figure 6 Figure 2 is a schematic diagram of a connecting ring structure of the present application;

[0033] Figure 7 Figure 3 is a schematic diagram of a third bolt structure of the present application;

[0034] Figure 8 Figure 4 is a schematic diagram of a second bolt structure of the present application;

[0035] Figure 9 Figure 5 is a schematic diagram of a first bolt structure of the present application;

[0036] Figure 10 Figure 6 is a schematic diagram of a fourth bolt structure of the present application;

[0037] Figure 11 Figure 7 is a schematic diagram of a lock cylinder structure of the present application when the lock cylinder is not grown;

[0038] Figure 12 Figure 8 is a schematic diagram of a lock cylinder structure of the present application when the lock cylinder is grown to different thicknesses.

[0039] In the figure: 1, lock cylinder body; 2, support mechanism; 21, base; 22, first joint; 3, first growth mechanism; 31, first connecting pipe; 32, second joint; 33, second bolt; 34, first growth sleeve; 4, first housing mechanism; 41, first mounting sleeve; 42, third bolt; 43, first connecting rod; 44, first housing; 45, first inner core; 5, second growth mechanism; 51, second connecting pipe; 52, third joint; 53, fourth bolt; 54, second growth sleeve; 55, connecting block; 56, connecting ring; 6, second housing mechanism; 61, second mounting sleeve; 62, first bolt; 63, second connecting rod; 64, second housing; 65, second inner core; 7, dial. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0041] Embodiment 1:

[0042] The present application provides a lock cylinder extension and a lock, comprising a lock cylinder body 1;

[0043] The bottom of the lock core body 1 is provided with a support mechanism 2 for external connection, one end of the support mechanism 2 is provided with a first growth mechanism 3 for convenient replacement, one end of the first growth mechanism 3 is provided with a first shell mechanism 4 for adaptive installation, the other end of the support mechanism 2 is provided with a second growth mechanism 5 for convenient replacement, one end of the second growth mechanism 5 is provided with a second shell mechanism 6 for adaptive installation;

[0044] The first growth mechanism 3 comprises a first installation assembly and a first locking assembly, the first installation assembly is arranged at one end of the support mechanism 2, and the first locking assembly is arranged outside the first installation assembly, which facilitates the adaptation of the first growth mechanism 3 with different thicknesses, and also adapts the first shell mechanism 4 without increasing the required thickness;

[0045] The second growth mechanism 5 comprises a second installation assembly and a second locking assembly, the second installation assembly is arranged at the other end of the support mechanism 2, and the second locking assembly is arranged outside the second installation assembly, which is used for adapting the second growth mechanism 5 with different thicknesses and adapting the second shell mechanism 6 without increasing the thickness;

[0046] The first shell mechanism 4 comprises a first bearing assembly and a first external connecting assembly, the first bearing assembly is arranged at one end of the first growth mechanism 3, and the first external connecting assembly is arranged at the top of the first bearing assembly, which facilitates the adaptation of the key to lock and unlock operation;

[0047] The second shell mechanism 6 comprises a second bearing assembly and a second external connecting assembly, the second bearing assembly is arranged at one end of the second growth mechanism 5, and the second external connecting assembly is arranged at the top of the second bearing assembly, which realizes the adaptation of the key to lock and unlock operation;

[0048] The length of the lock core is adjusted by increasing or decreasing the thickness of the first growth mechanism 3 and the second growth mechanism 5, and the length of the lock core is adjusted and disassembled according to the actual thickness.

[0049] Among them;

[0050] As shown in Figure 3 and 4 , the support mechanism 2 comprises a base 21, the base 21 is fixedly installed at the bottom of the lock core body 1, and the two ends of the base 21 are fixedly installed with first joints 22, which facilitates the adaptation of accessories at both ends, and can adapt accessories with increased thickness, or accessories without increased length.

[0051] Preferably;

[0052] As shown in Figure 3 , the first installation assembly comprises a first connecting pipe 31, the first connecting pipe 31 is sleeved outside one end of the first joint 22, one end of the first connecting pipe 31 is fixedly installed with a second joint 32, which plays a supporting and splicing operation.

[0053] As shown in Figure 3 and 5 , the first locking assembly includes a second bolt 33, which is threaded at the bottom of the first connecting pipe 31, and the first connecting pipe 31 is bolted with a first growth sleeve 34 through the second bolt 33, which is convenient for connection and fixation by tightening after fixation.

[0054] Further;

[0055] As shown in Figure 3 , the second mounting assembly includes a second connecting pipe 51, which is sleeved outside the other end of the first connector 22, and one end of the second connecting pipe 51 is fixedly installed with a third connector 52, which is convenient for fixing when increasing the length and ensuring the normal work of the lock cylinder in use.

[0056] As shown in Figure 3 and 6 , the second locking assembly includes a fourth bolt 53, which is threaded at the bottom of the second connecting pipe 51, and the second connecting pipe 51 is bolted with a second growth sleeve 54 through the fourth bolt 53, and the inside of the second growth sleeve 54 is provided with a connecting block 55, and the outer surface of the connecting block 55 is sleeved with a connecting ring 56, which is beneficial to realize the locking and fixing effect after the above length increasing structure.

[0057] More further;

[0058] As shown in Figure 3 , the first bearing assembly includes a first mounting sleeve 41, which is sleeved outside the second connector 32, and one end of the first mounting sleeve 41 is fixedly installed with a first connecting rod 43, and the bottom of the first mounting sleeve 41 is threaded with a third bolt 42, and the first mounting sleeve 41 is bolted with the second connector 32 through the third bolt 42, which is convenient for connection and fixation with the first growth mechanism 3, so as to realize the effect of lengthening, and can be adapted to the support mechanism 2 according to the required, realize the connection operation without lengthening;

[0059] The first outer connecting assembly includes a first housing 44, which is sleeved outside the first connecting rod 43, and the inside of the first housing 44 is provided with a first inner core 45, and the first housing 44 is bolted with the first housing 44 through the third bolt 42, which is beneficial to adapt to the subsequent lock operation, and adapt to the external key for operation.

[0060] In addition;

[0061] As shown in Figure 3As shown, the second bearing assembly comprises a second mounting sleeve 61 sleeved outside the third joint 52, one end of the second mounting sleeve 61 is fixedly provided with a second connecting rod 63, and the bottom of the second mounting sleeve 61 is threadedly connected with a first bolt 62 for adapting the second growth mechanism 5 and the supporting mechanism 2, and the length is increased when the second growth mechanism 5 is adapted, and there is no length increase when the supporting mechanism 2 is adapted;

[0062] The second outer connecting assembly comprises a second housing 64 sleeved outside the second connecting rod 63, and the inside of the second housing 64 is provided with a second inner core 65. The second mounting sleeve 61 is bolted to the second housing 64 through the first bolt 62, which can be adapted to an external key for easy on-off operation.

[0063] Finally

[0064] As Figure 3 shown, the lock cylinder body 1 is inserted on one side with a dial 7, and the dial 7 is located between the lock cylinder body 1 and the first growth sleeve 34. The dial 7 is a key part in the door lock, which is used to control the rotation of the lock cylinder to unlock or lock the door body.

[0065] As Figure 1 shown is the state diagram after the thickness is increased. When the length is assembled and increased, the lock cylinder body 1 and the supporting mechanism 2 are in the installed state. At this time, the increase can be directly performed at both ends. The first growth mechanism 3 is taken out. First, the dial 7 is inserted at one end of the lock cylinder body 1. Then the first connecting pipe 31 is sleeved outside the first joint 22 on one side, that is, the left side. The first growth sleeve 34 is placed on the top of the first connecting pipe 31. At this time, the second bolt 33 can be taken out. The second bolt 33 penetrates the first connecting pipe 31, the first joint 22 on one side, and the first growth sleeve 34 and is threadedly connected, so as to form a fixed state.

[0066] According to the above, the left side length increase is completed, and the actual thickness of the first growth mechanism 3 is provided in multiple thicknesses, such as 5mm, 7.5mm, 10mm, 15mm, 17.5mm, and 20mm, so as to adapt to door bodies of different thicknesses. The accessory shown in the figure adopts 7.5mm;

[0067] After the length of the left side is increased, the first housing mechanism 4 is installed. The first housing 44 and the first inner core 45 are in the state before installation, forming a partially increased state. At this time, the first mounting sleeve 41 is directly sleeved outside the second joint 32, and then the first housing 44 with the first inner core 45 is sleeved outside the first connecting rod 43 and connected thereto. At this time, the third bolt 42 is taken out. The third bolt 42 penetrates the first mounting sleeve 41, the second joint 32, and the first housing 44 in sequence and is connected therebetween, so that the left side part completes the assembly operation in the thickness increasing process;

[0068] When disassembling, the reverse operation of the above installation method can be performed, and the disassembly can be performed step by step according to the steps. When repairing and replacing, the reverse disassembly of the above installation method can be performed, and the replacement of new parts according to the above installation method can be performed.

[0069] The installation of the other side part, the second connecting pipe 51 is taken out, the second connecting pipe 51 is sleeved outside the first joint 22 on the other side, that is, the right side, and then the second growth sleeve 54 is placed on the top of the second connecting pipe 51 together with the connecting block 55, and the second growth sleeve 54 and the connecting block 55 are in a pre-installed state. Thus, the fourth bolt 53 can be taken out, and the fourth bolt 53 can be connected and fixed between the second connecting pipe 51 and the first joint 22 in sequence and the second growth sleeve 54. At this time, the length of the right side is increased;

[0070] According to the above, the length of the right side is increased, and the actual thickness of the second growth mechanism 5 is provided in multiple thicknesses, such as 5mm, 7.5mm, 10mm, 15mm, 17.5mm and 20mm, so as to adapt to different thicknesses of the door body. The accessory shown in the figure is 10mm;

[0071] After the length of the right side is increased, the second shell mechanism 6 is installed. First, the second installation sleeve 61 is taken out and sleeved outside the third joint 52. Then, the second shell 64 is installed together with the second inner core 65 outside the second installation sleeve 61 and the second connecting rod 63. The two are pre-assembled. As described above, the disassembly and replacement process is integrated. Then, the first bolt 62 is taken out, and the first bolt 62 is pre-penetrated through the second installation sleeve 61 and the third joint 52, and extends to the inside of the second shell 64 to be bolted and fixed.

[0072] When disassembling, the reverse operation of the above installation method can be performed, and the disassembly can be performed step by step according to the steps. When repairing and replacing, the reverse disassembly of the above installation method can be performed, and the replacement of new parts according to the above installation method can be performed.

[0073] The above-mentioned connection method is bolted and fixed, which is not only beneficial to subsequent disassembly, but also convenient to operate and use.

[0074] The above-mentioned actual technical effects are the advantages of increasing and decreasing replacement, disassembly, changing the traditional replacement and maintenance disassembly, and the like. The assembly method adopted by the present application realizes the effect of quick assembly and disassembly replacement, realizes the advantage of increasing and decreasing the actual length of the lock cylinder to correspond to different door body thicknesses, and adapts to the door body according to the increase and decrease of the first growth mechanism 3 and the second growth mechanism 5 of different thicknesses. The operation is simple, there are no spare parts, and therefore it is convenient for subsequent random increase and decrease adaptation and use, and it is beneficial to people's disassembly, replacement and maintenance work.

[0075] A lock includes a lock cylinder extension.

[0076] Embodiment 2:

[0077] The difference from embodiment 1 is that as shown in Figure 11 The state of not increasing the length;

[0078] At this time, the installation mode is assembled and fixed in the bolted manner as described above, which is as follows:

[0079] The first mounting sleeve 41 is directly sleeved on the outside of the left base 21, then the first shell 44 is sleeved on the outside of the first connecting rod 43 together with the first inner core 45, and the third bolt 42 is taken out, so that the third bolt 42 is sequentially penetrated through the first mounting sleeve 41, the left first joint 22 and extends to the inside of the first shell 44 and is fixed therewith, thereby realizing the effect of fixing and locking after connection;

[0080] The right side directly makes the second mounting sleeve 61 sleeved on the outside of the right first joint 22, then the second shell 64 is placed on the outside of the second mounting sleeve 61 and the second connecting rod 63 together with the second inner core 65, and is fixed by the first bolt 62 which is sequentially penetrated through the second mounting sleeve 61 and the third joint 52 and extends to the inside of the second shell 64;

[0081] The lock cylinder used in this embodiment is a lock cylinder without length increase, so it can adapt to conventional doors. The lock cylinder used for doors of different thicknesses can be adapted and used in the manner of embodiments 1 and 3.

[0082] Embodiment 3:

[0083] The difference from embodiments 1 and 2 is that as shown in Figure 11 The state of increasing different lengths;

[0084] The thickness of the first growth mechanism 3 used in embodiment 1 is 10mm, which is as shown in Figure 12 The thickness of the first growth mechanism 3 used in this embodiment is 10mm, and the installation, disassembly and replacement mode is the same as that in embodiment 1, which is also increased and decreased in the same way, so as to adapt to doors of corresponding thickness. Based on the above, the lock cylinder of different lengths can be adapted to doors of different thicknesses.

[0085] The thickness of the second growth mechanism 5 used in this embodiment is 7.5mm, and the installation, disassembly and replacement mode is the same as that in embodiment 1, which is also increased and decreased in the same way, so as to adapt to doors of corresponding thickness. Based on the above, the lock cylinder of different lengths can be adapted to doors of different thicknesses.

[0086] Through the above three groups of examples, the lock cylinder can be assembled by increasing or reducing, and the length of the lock cylinder can be adjusted according to actual needs, so as to adapt to door plates of different thicknesses. The lock cylinder used in example 1 is increased in length, and the connecting piece of 7.5 mm is actually needed to be increased on the left side, and the connecting piece of 10 mm is actually needed to be increased on the right side;

[0087] The lock cylinder used in example 2 is not increased in length and is in the original state, which can be applied to door plates of conventional thickness. It is also convenient to install and disassemble, which is beneficial to subsequent increasing, reducing and replacing operations, and also facilitates the use and operation of people;

[0088] The lock cylinder used in example 3 is increased in length. Unlike example 1, the left side uses a 10 mm connecting piece to increase, and the right side uses a 7.5 mm thick connecting piece, so that the required length can be increased. In order to achieve the above-mentioned assembling of the lock cylinder by increasing or reducing, and the length of the lock cylinder can be adjusted according to actual needs, so as to adapt to door bodies of different thicknesses.

[0089] In addition, it is not limited to the use of 7.5 mm and 10 mm length connecting pieces. As described above, 7.5 mm and 5 mm, 7.5 mm and 15 mm, 7.5 mm and 20 mm, 10 mm and 5 mm, 10 mm and 15 mm, 10 mm and 20 mm, etc. The connecting pieces of different thicknesses can be used in combination. Any thickness of connecting piece can be used in combination, which can be applied to door bodies of different thicknesses, including the above-mentioned combination but not limited to the above-mentioned combination.

[0090] The present application includes the above three groups of examples but is not limited to the above three groups of examples.

[0091] Although embodiments of the present application 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 therein without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lock cylinder extension, characterized by, Including the lock core body (1); The bottom of the lock core body (1) is provided with a support mechanism (2) for external connection, one end of the support mechanism (2) is provided with a first growth mechanism (3) for facilitating replacement, one end of the first growth mechanism (3) is provided with a first shell mechanism (4) for adapting installation, the other end of the support mechanism (2) is provided with a second growth mechanism (5) for facilitating replacement, one end of the second growth mechanism (5) is provided with a second shell mechanism (6) for adapting installation. The first growth mechanism (3) comprises a first mounting assembly and a first locking assembly, the first mounting assembly is arranged at one end of the support mechanism (2), and the first locking assembly is arranged outside the first mounting assembly. The first mounting assembly comprises a first connecting pipe (31), the first connecting pipe (31) is sleeved outside one end of the first connector (22), and a second connector (32) is fixedly installed at one end of the first connecting pipe (31). The first locking assembly comprises a second bolt (33), the second bolt (33) is threadedly connected at the bottom of the first connecting pipe (31), and the first growth sleeve (34) is bolted to the first connecting pipe (31) through the second bolt (33). The second growth mechanism (5) comprises a second mounting assembly and a second locking assembly, the second mounting assembly is arranged at the other end of the support mechanism (2), and the second locking assembly is arranged outside the second mounting assembly. The second mounting assembly comprises a second connecting pipe (51), the second connecting pipe (51) is sleeved outside the other end of the first connector (22), and a third connector (52) is fixedly installed at one end of the second connecting pipe (51). The second locking assembly comprises a fourth bolt (53), the fourth bolt (53) is threadedly connected at the bottom of the second connecting pipe (51), and the second growth sleeve (54) is bolted to the second connecting pipe (51) through the fourth bolt (53), the inside of the second growth sleeve (54) is provided with a connecting block (55), and the outer surface of the connecting block (55) is sleeved with a connecting ring (56). The first shell mechanism (4) comprises a first bearing assembly and a first external assembly, the first bearing assembly is arranged at one end of the first growth mechanism (3), and the first external assembly is arranged at the top of the first bearing assembly. The second shell mechanism (6) comprises a second bearing assembly and a second external assembly, the second bearing assembly is arranged at one end of the second growth mechanism (5), and the second external assembly is arranged at the top of the second bearing assembly. The length of the lock core is adjusted by increasing or decreasing the first growth mechanism (3) and the second growth mechanism (5) with different thicknesses, and the length of the lock core is adjusted and disassembled according to the actual thickness.

2. A lock cylinder extension as defined in claim 1, wherein: The support mechanism (2) comprises a base (21), the base (21) is fixedly installed at the bottom of the lock core body (1), and first connectors (22) are fixedly installed at both ends of the base (21).

3. A lock cylinder extension as defined in claim 1, wherein: The first bearing assembly comprises a first mounting sleeve (41), the first mounting sleeve (41) is sleeved outside the second joint (32), one end of the first mounting sleeve (41) is fixedly provided with a first connecting rod (43), the bottom of the first mounting sleeve (41) is threadedly connected with a third bolt (42), and the first mounting sleeve (41) is bolted with the second joint (32) through the third bolt (42). The first outer connecting assembly comprises a first shell (44), the first shell (44) is sleeved outside the first connecting rod (43), the inside of the first shell (44) is provided with a first inner core (45), and the first shell (44) is bolted with the first shell (44) through the third bolt (42).

4. The lock cylinder extension of claim 1, wherein: The second bearing assembly comprises a second mounting sleeve (61), the second mounting sleeve (61) is sleeved outside the third joint (52), one end of the second mounting sleeve (61) is fixedly provided with a second connecting rod (63), and the bottom of the second mounting sleeve (61) is threadedly connected with a first bolt (62). The second outer connecting assembly comprises a second shell (64), the second shell (64) is sleeved outside the second connecting rod (63), the inside of the second shell (64) is provided with a second inner core (65), and the second mounting sleeve (61) is bolted with the second shell (64) through the first bolt (62).

5. The lock cylinder extension of claim 1, wherein: One side of the lock cylinder body (1) is inserted with a dial (7), and the dial (7) is located between the lock cylinder body (1) and the first growth sleeve (34).

6. A lock characterised in that The lock cylinder extension piece comprises the lock cylinder extension piece according to any one of claims 1-5. The lock cylinder extension piece comprises the lock cylinder extension piece according to any one of claims 1-5.

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