CN220869074U - Integrated conversion type lock head capable of simply adjusting length - Google Patents

Abstract

The utility model belongs to the technical field of locks, and particularly discloses an integrated conversion type lock head capable of simply adjusting the length, which comprises a lock head assembly, a connecting fixed block, a cylindrical cushion block, a liner, a rotating assembly, a gourd lock assembly and a tail shaft assembly, wherein the connecting fixed block is detachably connected with the lock head assembly and the gourd lock assembly, a lock core body is arranged in a lock hole of the lock head assembly, a rotating hole is formed in the connecting fixed block, and the lock core body can rotate in the rotating hole; one end of the lock core body can be clamped with one side of the connecting liner, a first through hole is formed in the center of the connecting liner, the cylindrical cushion block is arranged in the first through hole, and the key can be abutted against the end part of the cylindrical cushion block after being inserted into the lock core body; the rotary assembly is clamped with the other side of the connecting liner, the cylindrical cushion block is propped against the rotary assembly, and the rotary assembly is used for driving the shifting wheel of the hoist lock assembly and the tail shaft assembly to rotate. The door lock can adapt to different door thicknesses by replacing the connecting fixing blocks, the cylindrical cushion blocks and the connecting liner, and a plurality of lock cylinders are not required to be manufactured according to the door thicknesses, so that the inventory cost is reduced.

Description

Integrated conversion type lock head capable of simply adjusting length

Technical Field

The utility model belongs to the technical field of locks, and particularly relates to an integrated conversion type lock head capable of simply adjusting the length.

Background

A door lock is a device for protecting houses and property. The door lock works on the principle that locking and unlocking of a lock tongue in a lock body are controlled by using one or more lock cylinders. The lock cylinder of a door lock is typically made of metal and includes a keyway and a set of key ridges inside the cylinder. After the key is correctly inserted into the key hole, the lock cylinder can be rotated, so that the key ridge groove corresponds to the gear inside the lock cylinder. The movement of these gears will cause the key chip inside the lock cylinder to move to the correct position, unlocking the locking bolt. Currently, lock cylinders with various specifications are usually arranged according to the thickness of a door, which results in enterprises needing to manufacture and store a plurality of finished lock cylinders according to different door thicknesses, thereby increasing inventory cost.

Disclosure of utility model

The utility model aims to provide an integrated conversion type lock head capable of simply adjusting the length, so as to solve the problem that in the prior art, a plurality of finished lock cylinders are required to be manufactured and stored according to the door thickness, and accordingly the inventory cost of enterprises is increased.

In order to achieve the above purpose, the technical scheme of the utility model is as follows: the integrated conversion type lock head capable of simply adjusting the length comprises a lock head assembly, a connection fixing block, a cylindrical cushion block, a liner, a rotating assembly, a gourd lock assembly and a tail shaft assembly, wherein the lock head assembly is fixed on a panel, the connection fixing block is detachably connected with the lock head assembly and the gourd lock assembly respectively, a lock core body is arranged in a lock hole of the lock head assembly, a rotating hole is formed in the connection fixing block, and the lock core body can rotate in the rotating hole; one end of the lock cylinder body can be clamped with one side of the connecting liner, a first through hole is formed in the center of the connecting liner, the cylindrical cushion block is arranged in the first through hole, and a key can be abutted against the end part of the cylindrical cushion block after being inserted into the lock cylinder body; the rotary assembly is connected with the other side of the connecting liner in a clamping mode, the cylindrical cushion block abuts against the rotary assembly, and the rotary assembly is used for driving the shifting wheel of the hoist lock assembly and the tail shaft assembly to rotate.

Further, the lock head component is a round head lock head, connecting threads are arranged outside the round head lock head, nuts are connected to the connecting threads in a threaded manner, circular plates are arranged at the end parts of the round head lock head, the circular plates and the nuts are respectively positioned at two sides of the panel, and the circular plates are positioned at the outer sides of the panel; and the panel is provided with a limiting structure for limiting the rotation of the lock head assembly.

Further, the limiting structure comprises at least one group of positioning protrusions, a limiting hole is formed in the panel, a thread section of the lock head assembly can penetrate through the limiting hole, and the area of the circular plate is larger than the opening area of the limiting hole; the thread section of the lock head assembly is provided with a limit groove, the limit protrusion is arranged in the limit hole and corresponds to the limit groove, and the limit protrusion can be slidably connected in the limit groove.

Further, be equipped with first connecting hole on the tapered end subassembly, be equipped with the second connecting hole on the calabash lock subassembly, be equipped with on the connection fixed block with the third connecting hole that the first connecting hole corresponds and with the fourth connecting hole that the second connecting hole corresponds, first connecting piece can be through first connecting hole and third connecting hole can dismantle the tapered end subassembly with the connection fixed block and be connected, the second connecting piece can be through second connecting hole and third connecting hole can dismantle the connection with the calabash lock subassembly.

Further, the hoist lock assembly comprises a hoist lock shell, a shifting wheel and two groups of clamping rings, wherein the shifting wheel is positioned in a groove of the hoist lock shell, second through holes are formed in two sides of the hoist lock shell, a third through hole is formed in the center of the shifting wheel, and the liner receiving assembly and the tail shaft assembly are respectively positioned in the second through holes in two sides of the hoist lock shell; the side, close to the poking wheel, of the liner and the tail shaft assembly is inserted into the two sides of the third through hole, a first clamping groove is formed in the side, close to the poking wheel, of the liner and the tail shaft assembly, the clamping ring is clamped in the first clamping groove, and the clamping ring is located on the two sides of the poking wheel; and a second clamping groove is formed in the third through hole and one side, close to the poking wheel, of the liner and the tail shaft assembly, and a clamping block clamped in the second clamping groove is arranged on the rotating assembly.

Further, the tail shaft assembly comprises a square rod, a connecting column and a return structure, wherein a first mounting hole and a second mounting hole are respectively formed in two sides of the connecting column, and the square rod is of a hollow structure; one side of the square rod is fixed in the first mounting hole of the connecting column; a connecting spring is fixed on one side of the rotating assembly, and the other side of the connecting spring penetrates into the second mounting hole of the connecting column and abuts against the bottom surface of the second mounting hole; the return structure is used for returning the square rod and the connecting column; the second clamping groove is arranged in the second mounting hole.

Further, the return structure comprises a positioning spring, a positioning bead and a sealing bead, wherein a positioning groove is formed in the connecting column, and the bottom of the positioning bead can be clamped in the positioning groove; the positioning groove is internally provided with a fourth through hole for passing through a positioning spring, the bottom of the positioning spring passes through the fourth through hole and then is fixed with the square rod, the top of the positioning spring is fixed with the sealing beads, and the positioning beads are clamped in the positioning spring; the calabash shell is provided with a fifth through hole, the upper part of the positioning spring is positioned in the fifth through hole, and the sealing beads are fixed in the fifth through hole.

Further, the first connecting piece and the second connecting piece adopt countersunk machine screws.

The installation method of the technical scheme is as follows:

Step one: the lock head component passes through the limiting hole on the panel, and the limiting protrusion in the limiting hole is arranged in the limiting groove; the circular plate is abutted against the panel, then the nut is screwed into the connecting thread, and then the nut is screwed so that the nut is abutted against the panel, and the lock head assembly is fixed with the panel;

Step two: the cylindrical cushion block, the liner, the rotating assembly, the gourd lock shell, the poking wheel, the clamping ring, the positioning bead, the positioning spring, the sealing bead, the connecting spring, the connecting column and the square rod are combined together;

Step three: the cylindrical cushion block and the liner which are combined in the second step penetrate through the rotating hole on the connecting and fixing block, and the connecting and fixing block and the hoist lock shell are fixed by the second connecting piece;

Step four: penetrating the cylindrical cushion block combined in the step three into the lock cylinder body, and enabling the connecting liner to be clamped with the lock cylinder body; the connection fixing block and the lock head assembly are fixed by using a first connecting piece.

The working principle of the technical scheme is as follows:

When the key is not inserted, the knob of the rear panel in the door can drive the square rod to rotate, the square rod drives the rotating assembly to rotate through the connecting column, the rotating assembly drives the thumb wheel to rotate, and the thumb wheel drives the lock tongue to move to unlock or lock.

The key is inserted outside the door to prop against the cylindrical cushion block, the key drives the lock cylinder body to rotate, the lock cylinder body drives the liner to rotate, the liner drives the thumb wheel to rotate through the rotating assembly, and the thumb wheel drives the lock tongue to move to unlock or lock.

If the door thickness changes, only the first connecting piece and the second connecting piece are required to be detached first, and then the clamping ring which clamps the connecting liner is detached. Then the connecting fixed block, the cylindrical cushion block and the liner with corresponding thickness are replaced, and the concrete steps are as follows: the rotating assembly is firstly arranged in the gourd lock assembly, and then the connecting liner is inserted into the gourd lock shell and is clamped with the rotating assembly, and the clamping ring is used for clamping. And then the connecting liner is inserted into the rotating hole, and the connecting fixing block and the hoist lock shell are fixed by using the second connecting piece. And finally, inserting the cylindrical cushion block into the connecting liner, penetrating the cylindrical cushion block into the lock cylinder body, clamping the connecting liner with the lock cylinder body, and fixing the connecting fixing block with the lock head assembly by using the first connecting piece.

The beneficial effects of this technical scheme lie in:

① According to the technical scheme, the door lock can adapt to different door thicknesses only by replacing the connecting fixed block, the cylindrical cushion block and the connecting liner, companies do not need to do so much inventory of finished lock cylinders according to the door thicknesses, and inventory cost is reduced.

② The integrated structure is simple and convenient to replace, and no special personnel are needed.

③ The lock head component is provided with threads, so that the circular plate and the plane of the panel can be kept at a uniform height no matter how the thickness of the door changes.

Drawings

FIG. 1 is a schematic diagram of an integrated convertible length-adjustable lock head;

FIG. 2 is an overall exploded view of FIG. 1;

FIG. 3 is an exploded view of the installation of FIG. 1;

FIG. 4 is a schematic view of the lock cylinder assembly of FIG. 1;

FIG. 5 is a schematic view of the attachment of the gourd lock assembly of FIG. 1;

FIG. 6 is a schematic view of the block of FIG. 5 with the block shell removed;

FIG. 7 is a schematic illustration of the configuration of FIG. 6 with the thumb wheel removed;

Fig. 8 is a schematic view of the structure of fig. 7 with the snap ring and the liner removed.

Detailed Description

The following is a further detailed description of the embodiments:

Reference numerals in the drawings of the specification include: the lock cylinder comprises a lock cylinder assembly 1, a lock cylinder body 2, a nut 3, a connecting fixing block 4, a rotating hole 5, a third connecting hole 6, a fourth connecting hole 7, a first connecting piece 8, a second connecting piece 9, a cylinder cushion block 10, a connecting liner 11, a rotating assembly 12, a calabash lock shell 13, a second connecting hole 14, a second through hole 15, a clamping ring 16, a thumb wheel 17, a second clamping groove 18, a connecting spring 19, a connecting column 20, a square rod 21, a positioning groove 22, a fifth through hole 23, a positioning bead 24, a positioning spring 25, a sealing bead 26, a first connecting hole 27, a first clamping groove 28, a clamping block 29, a circular plate 30, a tail shaft assembly 31, a calabash lock assembly 32, a second mounting hole 33 and a limiting groove 34.

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The embodiment is basically as shown in the accompanying figures 1-8: the utility model provides an integrated conversion formula tapered end that can simply adjust length, as shown in fig. 1-3, includes tapered end subassembly 1, connects fixed block 4, cylinder cushion 10, connects courage 11, rotates subassembly 12, calabash lock subassembly 32 and tail-shaft subassembly 31, and tapered end subassembly 1 is fixed on the panel, specifically: the lock head component 1 is a round head lock head, connecting threads are arranged on the outer portion of the round head lock head, nuts 3 are connected to the connecting threads in a threaded mode, circular plates 30 are arranged at the end portions of the round head lock head, the circular plates 30 and the nuts 3 are located on two sides of the panel respectively, and the circular plates 30 are located on the outer side of the panel. The panel is provided with a limiting structure for limiting the rotation of the lock head assembly 1; the limiting structure comprises at least one group of limiting protrusions, limiting holes are formed in the panel, the thread sections of the lock head assembly 1 can penetrate through the limiting holes, and the area of the circular plate 30 is larger than the opening area of the limiting holes; the thread section of the lock head assembly 1 is provided with a limit groove 34, and the limit bulge is arranged in the limit hole and corresponds to the limit groove 34, and can be slidably connected in the limit groove 34.

The connection fixed block 4 is detachably connected with the lock head assembly 1 and the hoist lock assembly 32 respectively, specifically, a first connecting hole 27 is formed in the lock head assembly 1, a second connecting hole 14 is formed in the hoist lock assembly 32, a third connecting hole 6 corresponding to the first connecting hole 27 and a fourth connecting hole 7 corresponding to the second connecting hole 14 are formed in the connection fixed block 4, the first connecting piece 8 can detachably connect the lock head assembly 1 with the connection fixed block 4 through the first connecting hole 27 and the third connecting hole 6, and the second connecting piece 9 can detachably connect the connection fixed block 4 with the hoist lock assembly 32 through the second connecting hole 14 and the third connecting hole 6. The first connecting piece 8 and the second connecting piece 9 adopt countersunk screws.

As shown in fig. 2-4, a lock core body 2 is arranged in a lock hole of the lock head assembly 1, a rotating hole 5 is arranged on the connecting fixing block 4, and the lock core body 2 can rotate in the rotating hole 5. One end of the lock cylinder body 2 can be clamped with one side of the liner 11. The center of the connecting liner 11 is provided with a first through hole, the cylindrical cushion block 10 is arranged in the first through hole, and a key can be propped against the end part of the cylindrical cushion block 10 after being inserted into the lock cylinder body 2. The rotating assembly 12 is clamped with the other side of the liner 11, the cylindrical cushion block 10 is propped against the rotating assembly 12, and the rotating assembly 12 is used for driving the thumb wheel 17 and the tail shaft assembly 31 of the hoist lock assembly 32 to rotate.

As shown in fig. 2, 3 and 5-8, the gourd lock assembly 32 comprises a gourd lock housing 13, a thumb wheel 17 and two groups of clamping rings 16, the thumb wheel 17 is positioned in a groove of the gourd lock housing 13, two sides of the gourd lock housing 13 are provided with second through holes 15, the center of the thumb wheel 17 is provided with a third through hole, and the liner 11 and the tail shaft assembly 31 are respectively positioned in the second through holes 15 at two sides of the gourd lock housing 13. The side of the liner 11 and the tail shaft assembly 31 (specifically, the connecting column 20) close to the thumb wheel 17 is inserted into the two sides of the third through hole, the side of the liner 11 and the tail shaft assembly 31 close to the thumb wheel 17 is provided with a first clamping groove 28, the clamping ring 16 is clamped in the first clamping groove 28, and the clamping ring 16 is positioned on the two sides of the thumb wheel 17. The third through hole and the side of the connecting liner 11 and the connecting column 20, which is close to the thumb wheel 17, are respectively provided with a second clamping groove 18, and the rotating assembly 12 is provided with a clamping block 29 which is clamped in the second clamping groove 18.

The tail shaft assembly 31 comprises a square rod 21, a connecting column 20 and a return structure, wherein a first mounting hole and a second mounting hole 33 are respectively formed in two sides of the connecting column 20, and the square rod 21 is of a hollow structure. One side of the square bar 21 is fixed in the first mounting hole of the connection post 20. A connecting spring 19 (specifically, a drum spring) is fixed on one side of the rotating assembly 12, and the other side of the connecting spring 19 penetrates into the second mounting hole 33 of the connecting column 20 and abuts against the bottom surface of the second mounting hole 33. The second clamping groove 18 is arranged in the second mounting hole 33. The return structure is used for returning the square bar 21 and the connecting column 20 and comprises a positioning spring 25, a positioning bead 24 and a sealing bead 26, a positioning groove 22 is formed in the connecting column 20, and the bottom of the positioning bead 24 can be clamped in the positioning groove 22; the positioning groove 22 is internally provided with a vertical fourth through hole for passing through the positioning spring 25, the bottom of the positioning spring 25 passes through the fourth through hole and then is fixed with the square rod 21, the top of the positioning spring 25 is fixed with the sealing bead 26, the positioning bead 24 is clamped in the positioning spring 25, the hoist shell is provided with a vertical fifth through hole 23, the upper part of the positioning spring 25 is positioned in the fifth through hole 23, and the sealing bead 26 is fixed in the fifth through hole 23.

The specific installation process is as follows:

Step one: the lock head assembly 1 is penetrated through the limit hole on the panel, and the limit protrusion in the limit hole is arranged in the limit groove 34; the circular plate 30 is abutted against the panel, the nut 3 is screwed into the connecting thread, and then the nut 3 is screwed, so that the nut 3 is abutted against the panel, and the lock head assembly 1 is fixed with the panel;

Step two: the cylindrical cushion block 10, the liner 11, the rotating assembly 12, the gourd lock housing 13, the thumb wheel 17, the clamping ring 16, the positioning bead 24, the positioning spring 25, the sealing bead 26, the connecting spring 19, the connecting column 20 and the square rod 21 are combined together;

Step three: the cylindrical cushion block 10 and the liner 11 which are combined in the second step pass through the rotating hole 5 on the connecting and fixing block 4, and the connecting and fixing block 4 and the gourd lock shell 13 are fixed by the second connecting piece 9;

step four: penetrating the cylindrical cushion block 10 combined in the step three into the lock cylinder body 2, and enabling the liner 11 to be clamped with the lock cylinder body 2; the connection fixing block 4 and the lock cylinder assembly 1 are fixed using the first connector 8.

The specific implementation process is as follows:

when a key is not inserted, the knob of the rear panel in the door can drive the square bar 21 to rotate, the square bar 21 drives the rotating assembly 12 to rotate through the connecting column 20, the rotating assembly 12 drives the thumb wheel 17 to rotate, and the thumb wheel 17 drives the lock tongue to move to unlock or lock.

The key is inserted outside the door to prop against the cylindrical cushion block 10, the key drives the lock cylinder body 2 to rotate, the lock cylinder body 2 drives the liner receiving 11 to rotate, the liner receiving 11 drives the shifting wheel 17 to rotate through the rotating assembly 12, and the shifting wheel 17 drives the lock tongue to move to unlock or lock.

If the door thickness changes, only the first connecting piece 8 and the second connecting piece 9 need to be detached first, and then the clamping ring 16 which clamps the connecting liner 11 is detached. Then the connecting fixing block 4, the cylindrical cushion block 10 and the liner 11 with corresponding thickness are replaced, and the concrete steps are as follows: the rotating assembly 12 is firstly arranged in the hoist lock assembly 32, and then the liner 11 is inserted into the hoist lock shell 13 and is clamped with the rotating assembly 12, and is clamped by using the clamping ring 16. Then the connecting liner 11 is inserted into the rotary hole 5 and the second connecting piece 9 is used for fixing the connecting fixing block 4 and the hoist lock shell 13. Finally, the cylindrical cushion block 10 is inserted into the connecting liner 11, the cylindrical cushion block 10 penetrates into the lock cylinder body 2, the connecting liner 11 is clamped with the lock cylinder body 2, and the connecting fixing block 4 and the lock head assembly 1 are fixed by using the first connecting piece 8.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The foregoing is merely an embodiment of the present utility model, and a specific structure and characteristics of common knowledge in the art, which are well known in the scheme, are not described herein, so that a person of ordinary skill in the art knows all the prior art in the application date or before the priority date, can know all the prior art in the field, and has the capability of applying the conventional experimental means before the date, and a person of ordinary skill in the art can complete and implement the present embodiment in combination with his own capability in the light of the present utility model, and some typical known structures or known methods should not be an obstacle for a person of ordinary skill in the art to implement the present utility model. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present utility model, and these should also be considered as the scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the utility of the patent. The protection scope of the present utility model is subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.

Claims (8)

1. The utility model provides a but integrated conversion formula simple and easy length-adjusting's tapered end which characterized in that: the lock comprises a lock head assembly (1), a connecting fixing block (4), a cylindrical cushion block (10), a liner (11), a rotating assembly (12), a hoist lock assembly (32) and a tail shaft assembly (31), wherein the lock head assembly (1) is fixed on a panel, the connecting fixing block (4) is detachably connected with the lock head assembly (1) and the hoist lock assembly (32) respectively, a lock cylinder body (2) is arranged in a lock hole of the lock head assembly (1), a rotating hole (5) is formed in the connecting fixing block (4), and the lock cylinder body (2) can rotate in the rotating hole (5); one end of the lock cylinder body (2) can be clamped with one side of the connecting liner (11), a first through hole is formed in the center of the connecting liner (11), the cylindrical cushion block (10) is installed in the first through hole, and a key can be abutted against the end part of the cylindrical cushion block (10) after being inserted into the lock cylinder body (2); the rotary assembly (12) is clamped with the other side of the liner (11), the cylindrical cushion block (10) is propped against the rotary assembly (12), and the rotary assembly (12) is used for driving the thumb wheel (17) of the hoist lock assembly (32) and the tail shaft assembly (31) to rotate.

2. The integrated convertible length-adjustable lock cylinder of claim 1, wherein: the lock head assembly (1) is a round head lock head, connecting threads are arranged outside the round head lock head, nuts (3) are connected to the connecting threads in a threaded mode, circular plates (30) are arranged at the end portions of the round head lock head, the circular plates (30) and the nuts (3) are respectively located on two sides of a panel, and the circular plates (30) are located on the outer side of the panel; the panel is provided with a limiting structure for limiting the rotation of the lock head assembly (1).

3. The integrated convertible length-adjustable lock cylinder of claim 2, wherein: the limiting structure comprises at least one group of limiting protrusions, a limiting hole is formed in the panel, a thread section of the lock head assembly (1) can penetrate through the limiting hole, and the area of the circular plate (30) is larger than the opening area of the limiting hole; the lock head assembly is characterized in that a limit groove (34) is formed in a thread section of the lock head assembly (1), the limit protrusion is arranged in the limit hole and corresponds to the limit groove (34), and the limit protrusion can be slidably connected in the limit groove (34).

4. The integrated convertible length-adjustable lock cylinder of claim 1, wherein: be equipped with first connecting hole (27) on tapered end subassembly (1), be equipped with second connecting hole (14) on calabash lock subassembly (32), be equipped with on connecting fixed block (4) with third connecting hole (6) and fourth connecting hole (7) that correspond with second connecting hole (14) that first connecting hole (27) correspond, first connecting piece (8) can be through first connecting hole (27) and third connecting hole (6) with tapered end subassembly (1) and connect fixed block (4) and dismantle the connection, second connecting piece (9) can be through second connecting hole (14) and third connecting hole (6) with connect fixed block (4) and calabash lock subassembly (32) and dismantle the connection.

5. The integrated convertible length-adjustable lock cylinder of claim 1, wherein: the hoist lock assembly (32) comprises a hoist lock shell (13), a poking wheel (17) and two groups of clamping rings (16), the poking wheel (17) is positioned in a groove of the hoist lock shell (13), second through holes (15) are formed in two sides of the hoist lock shell (13), a third through hole is formed in the center of the poking wheel (17), and the liner (11) and the tail shaft assembly (31) are respectively positioned in the second through holes (15) in two sides of the hoist lock shell (13); one side of the liner (11) and the tail shaft assembly (31) close to the poking wheel (17) is inserted into two sides of the third through hole, one side of the liner (11) and the tail shaft assembly (31) close to the poking wheel (17) is provided with a first clamping groove (28), the clamping ring (16) is clamped in the first clamping groove (28), and the clamping ring (16) is positioned at two sides of the poking wheel (17); the third through hole and the side of the liner (11) and the tail shaft assembly (31) close to the poking wheel (17) are respectively provided with a second clamping groove (18), and the rotating assembly (12) is provided with a clamping block (29) which is clamped in the second clamping grooves (18).

6. The integrated convertible length-adjustable lock cylinder of claim 5, wherein: the tail shaft assembly (31) comprises a square rod (21), a connecting column (20) and a return structure, wherein a first mounting hole and a second mounting hole (33) are respectively formed in two sides of the connecting column (20), and the square rod (21) is of a hollow structure; one side of the square rod (21) is fixed in a first mounting hole of the connecting column (20); a connecting spring (19) is fixed on one side of the rotating assembly (12), and the other side of the connecting spring (19) penetrates into a second mounting hole (33) of the connecting column (20) and abuts against the bottom surface of the second mounting hole (33); the return structure is used for returning the square rod (21) and the connecting column (20); the second clamping groove (18) is arranged in the second mounting hole (33).

7. The integrated convertible length-adjustable lock cylinder of claim 6, wherein: the return structure comprises a positioning spring (25), a positioning bead (24) and a sealing bead (26), wherein a positioning groove (22) is formed in the connecting column (20), and the bottom of the positioning bead (24) can be clamped in the positioning groove (22); a fourth through hole for passing through a positioning spring (25) is formed in the positioning groove (22), the bottom of the positioning spring (25) passes through the fourth through hole and then is fixed with the square rod (21), the top of the positioning spring (25) is fixed with the sealing bead (26), and the positioning bead (24) is clamped in the positioning spring (25); the hoist lock shell (13) is provided with a fifth through hole (23), the upper part of the positioning spring (25) is positioned in the fifth through hole (23), and the sealing beads (26) are fixed in the fifth through hole (23).

8. The integrated convertible length-adjustable lock cylinder of claim 4, wherein: the first connecting piece (8) and the second connecting piece (9) adopt countersunk machine screws.