Lock cylinder extension piece and lock

Abstract

The invention discloses a lock cylinder extension piece and a lock. The lock cylinder extension piece comprises a lock cylinder body. Through cooperative arrangement of the first lengthening mechanism and the second lengthening mechanism, the advantage that the actual length of the lock cylinder is increased or decreased to correspond to different door body thicknesses is achieved, the first lengthening mechanism and the second lengthening mechanism with different thicknesses are increased or decreased so as to adapt to the door body, operation is easy, fragmentary parts are avoided, and practicability is high. Therefore, follow-up random increase and decrease for adaptive use are facilitated, disassembly, assembly, replacement and maintenance work of people are facilitated, increase and decrease work of the needed lock cylinder length is achieved in an increase and decrease mode, and meanwhile the thickness of the first lengthening mechanism and the thickness of the second lengthening mechanism are diversified so that the requirements of people can be met, and door bodies with different thicknesses can be met. And by means of cooperation of the lock cylinder body, the supporting mechanism, the first shell mechanism and the second shell mechanism, the first lengthening mechanism and the second lengthening mechanism can be matched for increasing and decreasing operation.

Description

Technical Field

[0001] The present invention relates to the technical field of door locks, and in particular to a lock core extension and a lock. Background Art

[0002] The gourd lock core is a door lock core, which is named after its appearance similar to a gourd. The gourd lock core is the core technology for door unlocking, and is mainly used to resist vandalism such as prying and unlocking. The gourd lock core adopts a complex encryption system design, especially the double-sided lock core, which can greatly improve the anti-theft performance of the door lock;

[0003] Gourd lock cylinders are mainly used for door locks and furniture locks. Large gourd lock cylinders are usually used in locks for drawers, cabinets, furniture and other household items;

[0004] The prior art cannot achieve the extension and adjustment of the lock core, because the lock cores produced by manufacturers have different lengths to adapt to door bodies of different thicknesses, and the existing lock core sizes can only adapt to corresponding door bodies, and the length of the lock core cannot be increased or decreased. In addition, there are many parts during disassembly and replacement, which is not conducive to assembly and disassembly, causing maintenance difficulties and inconvenience in length adjustment operations. Summary of the invention

[0005] The object of the present invention is to provide a lock core extension and a lock, which have the advantages of conveniently and quickly increasing or decreasing the actual length required by the lock core, and are convenient for users to disassemble, repair and replace. The operation is simple and there is no phenomenon of scattered parts. The length of the lock core is increased or decreased according to actual needs and adapted to the corresponding door body to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a lock core extension and a lock, comprising a lock core body;

[0007] A support mechanism for external connection is provided at the bottom of the lock core body, a first extension mechanism for convenient replacement is provided at one end of the support mechanism, a first shell mechanism for adapting installation is provided at one end of the first extension mechanism, a second extension mechanism for convenient replacement is provided at the other end of the support mechanism, and a second shell mechanism for adapting installation is provided at one end of the second extension mechanism;

[0008] The first growth mechanism includes a first mounting assembly and a first locking assembly, wherein the first mounting assembly is arranged at one end of the supporting mechanism, and the first locking assembly is arranged at the outer side of the first mounting assembly;

[0009] The second extension mechanism includes a second mounting assembly and a second locking assembly, wherein the second mounting assembly is arranged at the other end of the supporting mechanism, and the second locking assembly is arranged at the outer side of the second mounting assembly;

[0010] The first housing mechanism comprises a first bearing assembly and a first external connection assembly, wherein the first bearing assembly is arranged at one end of the first extension mechanism, and the external connection assembly is arranged at the top of the first bearing assembly;

[0011] The second housing mechanism comprises a second bearing assembly and a second external connection assembly, wherein the second bearing assembly is arranged at one end of the second extension mechanism, and the second external connection assembly is arranged at the top of the second bearing assembly;

[0012] The length of the lock core is adjusted by increasing or decreasing the first growth mechanism and the second growth mechanism of different thicknesses, and the length adjustment and disassembly and assembly of the lock core are conveniently performed according to the actual thickness.

[0013] Exemplarily, the supporting mechanism includes a base, the base is fixedly mounted on the bottom of the lock core body, and first joints are fixedly mounted on both ends of the base.

[0014] Exemplarily, the first installation assembly includes a first connecting tube, the first connecting tube is sleeved on the outside of a first joint at one end, and a second joint is fixedly installed at one end of the first connecting tube.

[0015] Exemplarily, the first locking assembly includes a second bolt, the second bolt is threadedly connected to the bottom of the first connecting pipe, and the first connecting pipe is bolted to the first growth sleeve via the second bolt.

[0016] Exemplarily, the second installation assembly includes a second connecting pipe, the second connecting pipe is sleeved on the outside of the first joint at the other end, and a third joint is fixedly installed at one end of the second connecting pipe.

[0017] Exemplarily, the second locking assembly includes a fourth bolt, which is threadedly connected to the bottom of the second connecting pipe. The second connecting pipe is bolted to a second growth sleeve via the fourth bolt. A connecting block is provided inside the second growth sleeve, and a connecting ring is sleeved on the outer surface of the connecting block.

[0018] Exemplarily, the first bearing assembly includes a first mounting sleeve, the first mounting sleeve is sleeved on the outside of the second joint, a first connecting rod is fixedly mounted on one end of the first mounting sleeve, a third bolt is threadedly connected to the bottom of the first mounting sleeve, and the first mounting sleeve is bolted to the second joint through the third bolt;

[0019] The first external connection component includes a first shell, the first shell is sleeved on the outside of the first connecting rod, a first inner core is arranged inside the first shell, and the first shell is bolted to the first shell by a third bolt.

[0020] Exemplarily, the second bearing assembly includes a second mounting sleeve, the second mounting sleeve is sleeved on the outside of the second joint, a second connecting rod is fixedly mounted on one end of the second mounting sleeve, and a first bolt is threadedly connected to the bottom of the second mounting sleeve;

[0021] The second external connection component includes a second shell, the second shell is sleeved on the outside of the second connecting rod, a second inner core is arranged inside the second shell, and the second mounting sleeve is bolted to the second shell by a first bolt.

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

[0023] A lock comprises the lock core extension piece.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The present invention achieves the advantage of increasing or decreasing the actual length of the lock core to correspond to different door body thicknesses through the coordinated arrangement of the first growth mechanism and the second growth mechanism. The increase or decrease of the first growth mechanism and the second growth mechanism according to different thicknesses is convenient for adapting to door bodies, and the operation is simple and there are no fragmentary parts, so it is convenient for subsequent arbitrary increase or decrease for adaptation and use, and it is also beneficial for people's disassembly, replacement and maintenance operations. The increase or decrease method is adopted to achieve the increase or decrease of the required lock core length. At the same time, the thickness of the first growth mechanism and the second growth mechanism is diversified to meet people's needs and door bodies of different thicknesses to ensure the actual adaptation and use effect. The cooperation of the lock core body, the support mechanism, the first shell mechanism and the second shell mechanism is utilized to facilitate the adaptation of the first growth mechanism and the second growth mechanism to increase or decrease operations, so as to ensure stability after installation and ensure normal use.

[0026] Other features and advantages of the present invention will be described in the following description, and partly become obvious from the description, or be understood by implementing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the present invention;

[0028] Figure 2 It is a schematic diagram of the split structure of the present invention;

[0029] Figure 3 It is a schematic diagram of the explosion structure of the present invention;

[0030] Figure 4 This is a schematic diagram of the base structure of the present invention;

[0031] Figure 5 This is a schematic diagram of the structure of the first growth set of the present invention;

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

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

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

[0035] Fig. 9 This is a schematic diagram of the first bolt structure of the present invention;

[0036] Fig.10 This is a schematic diagram of a fourth bolt structure of the present invention;

[0037] Fig.11 This is a schematic diagram of the structure of the lock core of the present invention when it is not extended;

[0038] Fig.12 It is a schematic diagram of the structure of the lock core of the present invention when the thickness of the lock core increases differently.

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

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] Embodiment 1:

[0042] The present invention provides a lock core extension and a lock, comprising a lock core body 1;

[0043] A support mechanism 2 for external connection is provided at the bottom of the lock core body 1, a first extension mechanism 3 for convenient replacement is provided at one end of the support mechanism 2, a first housing mechanism 4 for adaptive installation is provided at one end of the first extension mechanism 3, a second extension mechanism 5 for convenient replacement is provided at the other end of the support mechanism 2, and a second housing mechanism 6 for adaptive installation is provided at one end of the second extension mechanism 5;

[0044] The first growth mechanism 3 includes 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 on the outside of the first mounting assembly, so as to facilitate the adaptation of the first growth mechanism 3 of different thicknesses, and also to adapt to the first housing mechanism 4 without increasing the required thickness.

[0045] The second growth mechanism 5 includes 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 on the outside of the second mounting assembly, and is used to adapt to the second growth mechanism 5 of different thicknesses and to adapt to the second housing mechanism 6 when the thickness is not increased;

[0046] The first housing mechanism 4 includes a first bearing assembly and a first external connection assembly. The first bearing assembly is arranged at one end of the first extension mechanism 3, and the external connection assembly is arranged at the top of the first bearing assembly. The first housing mechanism 4 facilitates unlocking and locking operations with an adapter key.

[0047] The second housing mechanism 6 includes a second bearing assembly and a second external connection assembly, the second bearing assembly is arranged at one end of the second extension mechanism 5, and the second external connection assembly is arranged on the top of the second bearing assembly, so as to realize the switch operation by using an adapter key;

[0048] The length of the lock core is adjusted by increasing or decreasing the first growth mechanism 3 and the second growth mechanism 5 of different thicknesses, and the length adjustment and disassembly and assembly of the lock core are facilitated according to the actual thickness.

[0049] in;

[0050] like Figure 3 and 4 As shown, the support mechanism 2 includes a base 21, which is fixedly mounted on the bottom of the lock core body 1. Both ends of the base 21 are fixedly mounted with first joints 22, which are convenient for adapting to accessories at both ends. It can adapt to accessories required to increase thickness, and can also adapt to accessories without increasing length.

[0051] Preferred;

[0052] like Figure 3 As shown, the first installation assembly includes a first connecting tube 31, which is sleeved on the outside of the first joint 22 at one end. A second joint 32 is fixedly installed at one end of the first connecting tube 31 to provide support and splicing operations.

[0053] like Figure 3 and 5 As shown, the first locking assembly includes a second bolt 33, which is threadedly connected to the bottom of the first connecting tube 31. The first connecting tube 31 is bolted to the first extension sleeve 34 through the second bolt 33, so that the connection can be fixed by tightening after fixation.

[0054] further;

[0055] like Figure 3 As shown, the second installation assembly includes a second connecting tube 51, which is sleeved on the outside of the first joint 22 at the other end. A third joint 52 is fixedly installed at one end of the second connecting tube 51 to facilitate fixation when increasing the length and ensure the normal operation of the lock core when in use.

[0056] like Figure 3 and 6 As shown, the second locking assembly includes a fourth bolt 53, which is threadedly connected to the bottom of the second connecting tube 51. The second connecting tube 51 is bolted with a second extension sleeve 54 through the fourth bolt 53. A connecting block 55 is provided inside the second extension sleeve 54, and a connecting ring 56 is sleeved on the outer surface of the connecting block 55, which is beneficial to achieve a locking and fixing effect after the above-mentioned length increase structure.

[0057] Going a step further;

[0058] like Figure 3 As shown, the first bearing assembly includes a first mounting sleeve 41, the first mounting sleeve 41 is sleeved on the outside of the second joint 32, a first connecting rod 43 is fixedly mounted on one end of the first mounting sleeve 41, a third bolt 42 is threadedly connected to the bottom of the first mounting sleeve 41, and the first mounting sleeve 41 is bolted to the second joint 32 through the third bolt 42, so as to be conveniently connected and fixed with the first extension mechanism 3, thereby achieving the effect of increasing the length, and can be adapted to the support mechanism 2 as required to achieve the connection operation without increasing the length;

[0059] The first external connection component includes a first shell 44, which is sleeved on the outside of the first connecting rod 43. A first inner core 45 is provided inside the first shell 44. The first shell 44 is bolted to the first shell 44 by a third bolt 42, which is convenient for adapting to subsequent switch lock operations and adapting to operation with an external key.

[0060] in addition;

[0061] like Figure 3As shown, the second bearing assembly includes a second mounting sleeve 61, which is sleeved on the outside of the third joint 52, and a second connecting rod 63 is fixedly mounted on one end of the second mounting sleeve 61, and a first bolt 62 is threadedly connected to the bottom of the second mounting sleeve 61, which is used to adapt to the second growth mechanism 5 and the support mechanism 2. When the second growth mechanism 5 is adapted, the length is increased, and when the support mechanism 2 is adapted, the length is not increased;

[0062] The second external connection component includes a second shell 64, which is sleeved on the outside of the second connecting rod 63. A second inner core 65 is provided inside the second shell 64. The second mounting sleeve 61 is bolted to the second shell 64 by a first bolt 62 and can be adapted to an external key to facilitate switch operation.

[0063] at last

[0064] like Figure 3 As shown, a thumbwheel 7 is inserted into one side of the lock core body 1. The thumbwheel 7 is located between the lock core body 1 and the first extension sleeve 34. The thumbwheel 7 is a key component in the door lock and is used to control the rotation of the lock core to unlock or lock the door.

[0065] like Figure 1 The figure shows the state after the thickness is increased. When assembling to increase the length, the lock core body 1 and the support mechanism 2 are in the installation state. At this time, the increase can be made directly at both ends. The first increase mechanism 3 is taken out, and the dial wheel 7 is first inserted into one end of the lock core body 1. Then, the first connecting tube 31 is sleeved on one side, or the outside of the first joint 22 on the left side, and the first increase sleeve 34 is placed on the top of the first connecting tube 31. At this time, the second bolt 33 can be taken out, and the second bolt 33 is passed through the first connecting tube 31 and the first joint 22 on one side and the first increase sleeve 34 and threadedly connected to form a fixed state;

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

[0067] After the length of the left side is increased, the first housing mechanism 4 is installed, and the first housing 44 and the first inner core 45 are in a partially increased state in comparison with the pre-installed state. At this time, the first installation sleeve 41 is directly sleeved on the outside of the second joint 32, and then the first housing 44 together with the first inner core 45 is sleeved on the outside of the first connecting rod 43 and connected thereto. At this time, the third bolt 42 is taken out, and the third bolt 42 is used to sequentially penetrate the first installation sleeve 41 and the second joint 32 and connect the first housing 44, so that the left side portion is assembled in the process of increasing the thickness;

[0068] When disassembling, the above installation method can be reversed, and the disassembly can be performed step by step according to the steps. When repairing or replacing, the above installation method can be reversed, and new parts can be replaced according to the above installation method.

[0069] To install the components on the other side, take out the second connecting tube 51, and put the second connecting tube 51 on the other side, that is, the outside of the first joint 22 on the right side, and then place the second extension sleeve 54 together with the connecting block 55 on the top of the second connecting tube 51, and the second extension sleeve 54 and the connecting block 55 are in a pre-installed state, so that the fourth bolt 53 can be taken out, and it passes through the second connecting tube 51 and the first joint 22 in turn and is connected and fixed with the second extension sleeve 54, and the length increase on the right side is now completed;

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

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

[0072] When disassembling, the above installation method can be reversed, and the disassembly can be performed step by step according to the steps. When repairing or replacing, the above installation method can be reversed, and new parts can be replaced according to the above installation method.

[0073] The above connection methods are all bolted, which is not only convenient for subsequent disassembly and assembly, but also easy to operate and use;

[0074] The technical effect achieved by the above-mentioned practice is the advantage of increase and decrease replacement and disassembly and assembly, which changes the traditional practice of scattering springs, pins, sleeves and other accessories during replacement, maintenance and disassembly. The assembly method adopted by the present invention can achieve the effect of quick assembly and replacement, and realizes the advantage of increasing or decreasing the actual length of the lock core to correspond to different door body thicknesses. The first growth mechanism 3 and the second growth mechanism 5 are increased or decreased according to different thicknesses to facilitate adaptation to the door body, and the operation is simple, without broken parts, so it is convenient for subsequent arbitrary increase and decrease of adaptation and use, and is also beneficial to people's disassembly, replacement and maintenance operations.

[0075] A lock includes a lock cylinder extension.

[0076] Embodiment 2:

[0077] The difference from Example 1 is that Fig.11 The state shown in the figure is without increasing the length;

[0078] At this time, the installation method is as mentioned above, which is assembled and fixed by bolting, as follows:

[0079] The first installation sleeve 41 is directly sleeved on the outside of the left base 21, and then the first shell 44 and the first inner core 45 are sleeved on the outside of the first connecting rod 43, and the third bolt 42 is taken out, so that the third bolt 42 passes through the first installation sleeve 41 and the left first joint 22 in sequence and extends to the inside of the first shell 44 to be fixed thereto, thereby achieving the effect of fixing and locking after connection;

[0080] On the right side, the second installation sleeve 61 is directly sleeved on the outside of the first joint 22 on the right side, and then the second shell 64 together with the second inner core 65 is placed on the outside of the second installation sleeve 61 and the second connecting rod 63, and the first bolt 62 passes through the second installation sleeve 61 and the third joint 52 in sequence and extends to the inside of the second shell 64 to be fixed thereto;

[0081] The lock core used in this embodiment is a lock core that does not increase its length, so it can adapt to conventional door bodies. The lock core used for door bodies of different thicknesses can be adapted and used in the manner of Examples 1 and 3.

[0082] Embodiment 3:

[0083] The difference from Examples 1 and 2 is that Fig.11 The figures show the states of different lengths of growth;

[0084] The thickness of the first growth mechanism 3 used in Example 1 is 10 mm. Fig.12 As shown, the first growth mechanism 3 with a thickness of 10 mm used in this embodiment is specifically installed, disassembled and replaced in the same manner as in the above-mentioned embodiment 1, and is also increased and decreased in the same manner, so as to be used to adapt to the door body of corresponding thickness. Based on the above-mentioned use of lock cores of different lengths, it can be applied to door bodies of different thicknesses;

[0085] The thickness of the second growth mechanism 5 used in this embodiment is 7.5mm, and its specific installation, disassembly and replacement methods are the same as those in the above-mentioned embodiment 1. It is also increased and decreased in use, so as to be used to adapt to door bodies of corresponding thicknesses. Based on the above-mentioned use of lock cores of different lengths, it can be suitable for door bodies of different thicknesses.

[0086] Through the above three groups of embodiments, the lock core can be assembled by adding and reducing, and the length of the lock core can be adjusted according to actual needs, so as to adapt to door panels of different thicknesses. The method adopted in embodiment 1 is to increase the length of the lock core, and the 7.5mm connecting piece is actually added to the left part, and the 10mm connecting piece is actually added to the right part;

[0087] The lock core used in Example 2 is in the original state without increasing the length, which can be applied to door panels of conventional thickness, and it is also convenient for installation and disassembly, which is conducive to subsequent addition, reduction and replacement operations, and is also convenient for people to use and operate;

[0088] The method used in Real-time 3 is an extended lock core, which is different from Real-time 1. The left side is extended by a 10mm connector, while the right side is extended by a 7.5mm thick connector, so that the required length can be increased, so as to achieve the lock core assembled by increasing and decreasing as mentioned above, and the length of the lock core can be adjusted according to actual needs, so as to adapt to doors of different thicknesses.

[0089] In addition, the invention is not limited to the combination of connectors with a length of 7.5mm and 10mm. For example, connectors with thicknesses of 7.5mm and 5mm, 7.5mm and 15mm, 7.5mm and 20mm, 10mm and 5mm, 10mm and 15mm, 10mm and 20mm can be used in combination. Connectors of any thickness can be used in combination and can be suitable for door bodies of different thicknesses, including the above-mentioned combinations but not limited to the above-mentioned combinations.

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

[0091] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lock core extension, characterized in that: It comprises a 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 extension mechanism (3) for easy replacement, one end of the first extension mechanism (3) is provided with a first housing mechanism (4) for adaptive installation, the other end of the support mechanism (2) is provided with a second extension mechanism (5) for easy replacement, and one end of the second extension mechanism (5) is provided with a second housing mechanism (6) for adaptive installation; The first extension mechanism (3) comprises a first mounting assembly and a first locking assembly, wherein the first mounting assembly is arranged at one end of the support mechanism (2), and the first locking assembly is arranged at the outside of the first mounting assembly; The second extension mechanism (5) comprises a second mounting assembly and a second locking assembly, the second mounting assembly being arranged at the other end of the support mechanism (2), and the second locking assembly being arranged at the outside of the second mounting assembly; The first housing mechanism (4) comprises a first bearing component and a first external connection component, the first bearing component is arranged at one end of the first extension mechanism (3), and the external connection component is arranged at the top of the first bearing component; The second housing mechanism (6) comprises a second bearing component and a second external connection component, the second bearing component is arranged at one end of the second extension mechanism (5), and the second external connection component is arranged at the top of the second bearing component; The length of the lock core is adjusted by increasing or decreasing the first growth mechanism (3) and the second growth mechanism (5) of different thicknesses, and the length adjustment and disassembly and assembly of the lock core are facilitated according to the actual thickness.

2. A lock core extension according to claim 1, characterized in that: The support mechanism (2) comprises a base (21), the base (21) is fixedly mounted on the bottom of the lock core body (1), and first joints (22) are fixedly mounted on both ends of the base (21).

3. The lock core extension according to claim 1, characterized in that: The first installation assembly comprises a first connecting tube (31), the first connecting tube (31) being sleeved on the outside of a first joint (22) at one end, and a second joint (32) being fixedly mounted on one end of the first connecting tube (31).

4. A lock core extension according to claim 3, characterized in that: The first locking assembly comprises a second bolt (33), wherein the second bolt (33) is threadedly connected to the bottom of the first connecting pipe (31), and the first connecting pipe (31) is bolted to a first extension sleeve (34) via the second bolt (33).

5. The lock core extension according to claim 1, characterized in that: The second installation assembly comprises a second connecting pipe (51), the second connecting pipe (51) is sleeved on the outside of the first joint (22) at the other end, and a third joint (52) is fixedly mounted on one end of the second connecting pipe (51).

6. The lock core extension according to claim 5, characterized in that: The second locking assembly comprises a fourth bolt (53), wherein the fourth bolt (53) is threadedly connected to the bottom of the second connecting pipe (51), the second connecting pipe (51) is bolted to a second growth sleeve (54) via the fourth bolt (53), a connecting block (55) is arranged inside the second growth sleeve (54), and a connecting ring (56) is sleeved on the outer surface of the connecting block (55).

7. The lock core extension according to claim 1, characterized in that: The first bearing assembly comprises a first mounting sleeve (41), the first mounting sleeve (41) is sleeved on the outer side of the second joint (32), a first connecting rod (43) is fixedly mounted on one end of the first mounting sleeve (41), a third bolt (42) is threadedly connected to the bottom of the first mounting sleeve (41), and the first mounting sleeve (41) is bolted to the second joint (32) via the third bolt (42); The first external connection component comprises a first shell (44), the first shell (44) is sleeved on the outside of the first connecting rod (43), a first inner core (45) is arranged inside the first shell (44), and the first shell (44) is bolted to the first shell (44) by a third bolt (42).

8. The lock core extension according to claim 1, characterized in that: The second bearing assembly comprises a second mounting sleeve (61), the second mounting sleeve (61) is sleeved on the outer side of the third joint (52), a second connecting rod (63) is fixedly mounted on one end of the second mounting sleeve (61), and a first bolt (62) is threadedly connected to the bottom of the second mounting sleeve (61); The second external connection component comprises a second shell (64), the second shell (64) is sleeved on the outside of the second connecting rod (63), a second inner core (65) is arranged inside the second shell (64), and the second mounting sleeve (61) is bolted to the second shell (64) by a first bolt (62).

9. The lock core extension according to claim 1, characterized in that: A thumbwheel (7) is inserted into one side of the lock core body (1), and the thumbwheel (7) is located between the lock core body (1) and the first extension sleeve (34).

10. A lock, characterized in that: The invention comprises a lock core extension piece as described in any one of claims 1 to 9.

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