A special-shaped lock cylinder structure, a lock cylinder and a lock

Abstract

The application discloses a special-shaped lock cylinder structure, a lock cylinder and a lock, which comprise a copper body lock shell, an inner lock cylinder is rotatably arranged in the copper body lock shell, a plurality of groups of elastic balls are elastically arranged in the inner lock cylinder, and a corresponding elastic ball is elastically arranged in the inner lock cylinder and corresponds to the installation position of each group of elastic balls; a key slot is formed in the center of the inner lock cylinder, and a plurality of groups of first side elastic balls and second side elastic balls are elastically arranged in the inner lock cylinder and correspond to the position of the key slot on one side of the inner lock cylinder. The plurality of groups of first side elastic balls and second side elastic balls arranged on one side of the inner lock cylinder are used for improving the overall unlocking difficulty of the lock cylinder, and are different from the up-and-down elastic ball structure of a normal lock body; the first side elastic balls and the second side elastic balls on each side are further matched with the side surface of a key, so that the safety of the lock body is improved; and due to the different structures of the front ends of the first side elastic balls and the second side elastic balls, the safety of the lock body can be better improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of special-shaped lock structure, in particular to a special-shaped lock cylinder structure, a lock cylinder and a lock. BACKGROUND

[0002] Special-shaped locks refer to those locks with shapes or structures different from conventional locks, usually with unique keyhole designs to enhance security performance. For example, the Tibetan labyrinth lock is a typical special-shaped lock, which appeared in the Tibetan areas of Yunnan Province in the late Qing Dynasty. This lock uses a special combined structure, with irregular keyhole design, so that ordinary keys cannot be opened, thereby improving security performance.

[0003] According to the authorized announcement number CN202882574U, a new special-shaped lock cylinder is disclosed, which comprises a copper body lock shell, a lock core and a lock column. The copper body lock shell is provided with a lock core inside, and the lock core is provided with a lock column at the lower end through a reset ball mechanism. The middle part of the lock core is provided with a keyhole. The bottom of one end of the keyhole is provided with an AB ball through a reset ball mechanism, and the bottom of the other end of the keyhole is provided with a lower butt joint ball through a reset ball mechanism. The lower butt joint ball is arranged in the lower butt joint ball hole arranged at the lower end of the lock core. At the same time, the upper end of the keyhole corresponding to the lower butt joint ball hole is provided with an upper butt joint ball hole, and the upper butt joint ball hole is provided with an upper butt joint ball. The beneficial effects of the present application are: simple structure, low production cost; at the same time, through the combination of three different special-shaped lock balls and five groups of different blade groove structures, 680 billion different key number changes are realized, so that the key is difficult to copy, has good security and safety, and can effectively prevent technical opening.

[0004] The above-mentioned special-shaped lock cylinder structure only sets different structure balls on the upper and lower sides of the key to complete the encryption work, but the existing technology mainly uses upper and lower elastic ball structures, which makes the lock cylinder structure have low security, and the lock cylinder cannot freely choose the use mode according to the specific use demand, so there is a need for a special-shaped lock cylinder structure, a lock cylinder and a lock. SUMMARY

[0005] The present application aims to provide a special-shaped lock cylinder structure, a lock cylinder and a lock, which can further lock the key from the side after the key is inserted into the key slot by the first side ball and the second side ball movably installed on one side of the key slot in the inner lock cylinder, thereby better improving the use strength of the lock body and the security of the lock body, to solve the technical problems mentioned in the background art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a special-shaped lock cylinder structure, comprising an inner lock cylinder, a plurality of groups of balls are elastically installed in the inner lock cylinder, and a matching ball is elastically installed corresponding to the installation position of each group of balls in the inner lock cylinder.

[0007] The inner lock core is provided with a key slot in the center, and a plurality of first side-positioned balls and second side-positioned balls are elastically mounted on one side of the inner lock core corresponding to the position of the key slot;

[0008] The front end of the first side-positioned ball is provided with a flat-mouth resisting block, and the front end of the second side-positioned ball is provided with a sharp-mouth resisting block.

[0009] Preferably, the outer end of the ball is elastically pressed by a work-type column, and a supporting spring for supporting is mounted on the outer end of each group of work-type columns, and a limiting column is mounted on the outer end of each group of supporting springs.

[0010] Preferably, the specifications of each group of balls are different, and a height supplementing column is arranged between some groups of balls and work-type columns.

[0011] An inner lock core is provided with a protection shell fixedly mounted on the outer end, an inner groove is formed on the other end, a positioning groove is formed on the side of the outer arc surface of the inner lock core close to the inner groove, a plurality of upper-positioned through holes are formed on the upper part of the outer arc surface of the inner lock core, a bottom groove is formed in the inner lock core corresponding to the position of each group of upper-positioned through holes, and a side hole is formed on the side of the inner lock core.

[0012] Preferably, each group of balls elastically extends from the inner part of the upper-positioned through hole to the inner part of the key slot, each group of height supplementing columns is filled on the upper part of the shorter ball, each group of matching balls is movably mounted in the bottom groove corresponding to balls of different specifications, and the first side-positioned ball and the second side-positioned ball are movably mounted in the side hole.

[0013] Preferably, the outer end of each group of first side-positioned balls is in a conical structure, two groups of baffles are symmetrically mounted on the outer arc surface of the first side-positioned ball, the outer arc surface of the baffle is slidably mounted on the inner wall of the side hole, the outer end of the second side-positioned ball is in a circular truncated cone structure, the outer arc surface of the second side-positioned ball is slidably mounted on the inner wall of the side hole, the flat-mouth resisting block and the sharp-mouth resisting block elastically extend from the inner part of the side hole to the inner part of the key slot.

[0014] A lock includes a copper body lock shell, a ball mounting hole is formed through the top end of the copper body lock shell, a door bolt rotating groove is formed in the middle of the copper body lock shell, a group of clamping grooves are formed on both ends of the copper body lock shell, a rotating pipe is rotatably mounted in the door bolt rotating groove, and a rotating pin is fixedly mounted on the outer arc surface of the rotating pipe.

[0015] Two groups of inner lock cores are symmetrically rotatably mounted on both sides of the copper body lock shell, the two groups of inner lock cores are rotated in opposite directions, and the two groups of inner lock cores are rotatably inserted into the inner part of the rotating pipe corresponding to the sides.

[0016] It also includes a key.

[0017] Preferably, the inner lock core outer end mounted protective shell is clamped into the inner card slot, the limiting column, the supporting spring, the I-shaped column and the billiard ball are installed in the billiard ball mounting hole, the supporting spring pushes the billiard ball out of the billiard ball mounting hole, the rotating pipe is symmetrically provided with a connecting groove on the left and right sides, and two groups of the inner lock core are inserted into the connecting groove and clamped and installed in the door pin rotating groove.

[0018] Preferably, the key is provided with a plurality of groups of main tooth grooves in opposite directions on the upper and lower sides, the key is provided with auxiliary tooth grooves corresponding to the elastic installation of the billiard ball and the cooperating billiard ball on the upper and lower sides, and the key is provided with a plurality of groups of side grooves corresponding to the first side position billiard ball and the second side position billiard ball on the two sides.

[0019] Preferably, the first side position billiard ball and the second side position billiard ball are installed between the billiard ball and the cooperating billiard ball, the billiard ball, the cooperating billiard ball, the first side position billiard ball and the second side position billiard ball are lifted after the key is inserted into the key slot, the lifted billiard ball, cooperating billiard ball, first side position billiard ball and second side position billiard ball are shrunk into the corresponding upper perforation and bottom groove, and the tail end of the key is inserted into the cross groove from the inner groove.

[0020] Compared with the prior art, the present application has the following advantages:

[0021] The plurality of groups of first side position billiard balls and second side position billiard balls installed on one side of the inner lock core are used to improve the overall unlocking difficulty of the lock core, which is different from the upper and lower billiard ball structure of the normal lock body, and the first side position billiard ball and the second side position billiard ball on one side of the inner lock core are further matched with the side surface of the key to improve the safety of the lock body as a whole, and due to the different structures of the front ends of the first side position billiard ball and the second side position billiard ball, the safety of the lock body can be better improved, and the unlocking problem caused by the violent pressing of the billiard ball in the lock core can be avoided. The inner lock core can be used alone or in cooperation, when used alone, the door body can only be opened from one side, and when used in cooperation, the first side position billiard ball and the second side position billiard ball are provided in the inner lock core of the two groups, and the safety during opening and closing of the door is ensured by synchronously encrypting from both sides of the door. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0023] Figure 2 It is a split schematic diagram of the limiting column mounting structure of the present application;

[0024] Figure 3 It is a split schematic diagram of the first side position billiard ball mounting structure of the present application;

[0025] Figure 4 It is a schematic diagram of the overall structure of the first side position billiard ball of the present application;

[0026] Figure 5 This is a schematic diagram showing the overall structure of the spring-loaded copper body lock shell of the present invention disassembled;

[0027] Figure 6 This is a schematic diagram showing the disassembled structure of the ball bearing mounting device of the present invention;

[0028] Figure 7 This is a schematic diagram showing the disassembled installation structure of the rotating tube of the present invention;

[0029] Figure 8 This is a schematic diagram of the overall structure of the key of the present invention.

[0030] In the diagram: 1. Brass lock shell; 2. Inner lock cylinder; 3. Limiting pin; 4. Support spring; 5. I-shaped pin; 6. Tumbler; 7. Height-enhancing pin; 8. Protective shell; 9. Positioning groove; 10. Inner groove; 11. Upper through hole; 12. Matching tumbler; 13. Side hole; 14. First side tumbler; 15. Baffle; 16. Flat-mouth stop; 17. Second side tumbler; 18. Pointed-mouth stop; 19. Tumbler mounting hole; 20. Door pin rotating groove; 21. Slot; 22. Rotating tube; 23. Rotating pin; 24. Connecting groove; 25. Positioning seat; 26. Cross groove; 27. Key slot; 28. Key; 29. ​​Main tooth groove; 30. Auxiliary tooth groove; 31. Side groove. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] This invention provides: an irregularly shaped lock cylinder structure, such as... Figures 1-7 As shown, it includes an inner lock cylinder 2, inside which several sets of pins 6 are elastically installed. Corresponding to the installation positions of each set of pins 6, matching pins 12 are elastically installed inside the inner lock cylinder 2. The initial lock body structure is completed by the cooperation of the set pins 6 and matching pins 12, which satisfies the encrypted locking state of the door and makes the use of the inner lock cylinder 2 have initial security.

[0033] The inner lock core 2 is provided with a key slot 27 in the center, and a plurality of first side position pins 14 and second side position pins 17 are elastically mounted on one side of the inner lock core 2 corresponding to the position of the key slot 27. The first side position pins 14 and the second side position pins 17 elastically mounted in the inner lock core 2 corresponding to the position of the key slot 27 can further strengthen the use of the lock body and improve the safety of the lock body. Unlike the existing lock body which directly completes the unlocking by cooperating the pin 6 and the cooperating pin 12, the key 28 is additionally subjected to unlocking conditions from the side, and because the first side position pin 14 and the second side position pin 17 have different shapes and different structures at the front end, the unlocking problem of directly pressing the pin 6 by the traditional unlocking method without the key 28 can be further avoided, thereby better improving the use strength and safety of the inner lock core 2.

[0034] The first side position pin 14 is provided with a flat mouth resisting block 16 at the front end, and the second side position pin 17 is provided with a sharp mouth resisting block 18 at the front end. The flat mouth resisting block 16 mounted at the outer end of the first side position pin 14 and the sharp mouth resisting block 18 mounted at the outer end of the second side position pin 17 make the side slot 31 formed on the side of the key 28 have different depths and shapes, further improving the unlocking difficulty without the key 28, thereby ensuring the use strength and safety of the lock body.

[0035] As a preferred, the pin 6 is elastically pressed by a work column 5 at the outer end, each group of work columns 5 is provided with a group of supporting springs 4 for supporting, and each group of supporting springs 4 is provided with a group of limiting columns 3. The limiting column 3 is arranged to limit the supporting spring 4, so as to ensure that the supporting spring 4 continuously applies a downward thrust to the pin 6. At the same time, the limiting column 3 is arranged to limit the use strength of the supporting spring 4, so as to avoid the supporting spring 4 from being deformed and stuck after being pressed, thereby improving the overall service life of the lock body, and also enabling the pin 6 to have sufficient support to remain unchanged under violent unlocking, thereby improving the stability of the use of the pin 6.

[0036] Further, each group of pins 6 has different specifications, and a plurality of groups of pins 6 and work columns 5 are provided with a height supplementing column 7. The pin 6 is uniformly machined and classified by equipment programming according to different password structures, so that the use specifications and installation sequence of each group of pins 6 are different. In view of the difference in length of different pins 6, the work column 5 and the height supplementing column 7 are arranged between the supporting spring 4 and the pin 6, so as to ensure that each group of pins 6 can be stably recovered after the key 28 is inserted into the key slot 27, thereby avoiding the problem of recovery sticking of the pin 6 due to different specifications, and greatly improving the smoothness of the inner lock core 2 in unlocking.

[0037] A lock core, such as Figures 1-7As shown in the figure, the inner lock core 2 is fixedly installed with a protective shell 8 at the outer end, an inner groove 10 is formed at the other end of the inner lock core 2, a positioning groove 9 is formed on the outer arc surface of the inner lock core 2 close to one side of the inner groove 10, a plurality of sets of upper perforations 11 are formed on the upper part of the outer arc surface of the inner lock core 2, a bottom groove is formed inside the inner lock core 2 corresponding to the position of each set of upper perforations 11, a side hole 13 is formed on the side edge of the inner lock core 2, and the protective shell 8 installed at the outer end of the inner lock core 2 improves the strength of the outer end of the inner lock core 2 during long-term use, avoiding damage to the inner lock core 2 from the outside, causing the lock body to be damaged, and the inner groove 10 formed at the other end of the inner lock core 2 enables the inner lock core 2 to be inserted into one side of the rotating pipe 22, enabling the two sets of inner lock cores 2 to be used in cooperation, and the positioning groove 9 formed on the outer arc surface of the inner lock core 2 improves the stability of the inner lock core 2 when inserted into the inner part of the rotating pipe 22, and improves the stability of the inner lock core 2 when cooperating with the rotating pipe 22 to rotate.

[0038] Furthermore, each set of billiard balls 6 is elastically extended from the inside of the upper perforation 11 to the inside of the key slot 27, each set of high column 7 is filled on the upper part of the shorter billiard ball 6, each set of matching billiard ball 12 is movably installed in the bottom groove corresponding to each set of different specifications of billiard ball 6, the first side billiard ball 14 and the second side billiard ball 17 are cross movably installed in the side hole 13, the billiard ball 6 is elastically extended from the inside of the upper perforation 11 to the inside of the key slot 27, to ensure that the billiard ball 6 can be directly used corresponding to the key slot 27, to improve the control of the key 28 on the inner lock core 2, and in addition, due to the different specifications of the billiard ball 6, the depth of the auxiliary tooth groove 30 formed on the surface of the key 28 is also different, and the matching billiard ball 12 corresponding to the billiard ball 6 is used to improve the difficulty of unlocking in the keyless state of the key 28.

[0039] It is worth noting that the outer end of each set of first side billiard ball 14 is conical structure, two sets of baffles 15 are symmetrically installed on the outer arc surface of the first side billiard ball 14, the outer arc surface of the baffle 15 is slidingly installed on the inner wall of the side hole 13, the outer end of the second side billiard ball 17 is round table type structure, the outer arc surface of the second side billiard ball 17 is slidingly installed on the inner wall of the side hole 13, the flat mouth block 16 and the sharp mouth block 18 are elastically extended from the inside of the side hole 13 to the inside of the key slot 27, the outer end shape of the first side billiard ball 14 and the second side billiard ball 17 is different, so that the first side billiard ball 14 and the second side billiard ball 17 are in different stress state after the key 28 is inserted, and the first side billiard ball 14 ensures the stability of the movement of the first side billiard ball 14 through the abutting state of the baffle 15 and the side hole 13, thereby ensuring that the flat mouth block 16 can better abut with the side groove 31 to complete the unlocking operation, and the outer end of the second side billiard ball 17 is set to be round table type structure, so that the overall stress movement state of the second side billiard ball 17 is more slow, thereby changing the depth of the side groove 31 formed on the side edge of the key 28 through the difference in shape of the first side billiard ball 14 and the second side billiard ball 17, to improve the safety of the overall use of the inner lock core 2.

[0040] A lock, such asFigures 1-8 As shown in the figure, it comprises a copper body lock shell 1, a pin mounting hole 19 is provided at the top end of the copper body lock shell 1, a door bolt rotating groove 20 is provided in the middle of the copper body lock shell 1, a group of clamping grooves 21 are provided at both ends of the copper body lock shell 1, a rotating pipe 22 is rotatably installed in the door bolt rotating groove 20, a rotating pin 23 is fixedly installed on the outer arc surface of the rotating pipe 22, the copper body lock shell 1 is provided to ensure that the two groups of inner lock cores 2 can be used synchronously, so that the inner lock core 2 can be applied to doors and other doors that need to be used in double, further improving the safety and diversity of the overall use of the inner lock core 2, and the door bolt rotating groove 20 provided in the middle of the copper body lock shell 1 limits the rotating pipe 22, so that both sides of the inner lock core 2 can be operated to unlock;

[0041] Two groups of inner lock cores 2 are symmetrically rotatably installed on both sides of the copper body lock shell 1, the two groups of inner lock cores 2 rotate in opposite directions, and the corresponding sides of the two groups of inner lock cores 2 are rotatably inserted into the inner part of the rotating pipe 22, the inner lock cores 2 on both sides of the copper body lock shell 1 are the same in structure but opposite in installation direction, and the operation direction is consistent when unlocking, reinforcing the use habit of the door lock and improving the comfort of the use of the door lock;

[0042] It also comprises a key 28.

[0043] Specifically, the protective shell 8 installed at the outer end of the inner lock core 2 is clamped into the clamping groove 21, the limiting column 3, the supporting spring 4, the work-type column 5 and the pin 6 are installed in the pin mounting hole 19, the supporting spring 4 presses the pin 6 out of the pin mounting hole 19, the connecting grooves 24 are symmetrically provided on both sides of the rotating pipe 22, the corresponding sides of the two groups of inner lock cores 2 extend into the door bolt rotating groove 20 and are clamped and installed in the connecting grooves 24, the positioning seat 25 is installed in the middle of the rotating pipe 22, the cross groove 26 is provided in the middle of the positioning seat 25, the pin mounting hole 19 provided in the inner part of the copper body lock shell 1 limits the limiting column 3, the supporting spring 4, the work-type column 5 and the pin 6, so that the pin 6 can be stably received in the pin mounting hole 19 after the key 28 is inserted, and the rotating pipe 22 can stably connect the two groups of inner lock cores 2, so that the key 28 can be inserted into the inner part of the rotating pipe 22 after being completely inserted into the key slot 27, until the key 28 contacts with the cross groove 26, to realize the control of the rotating pipe 22.

[0044] In addition, a plurality of groups of main tooth grooves 29 are oppositely formed on the upper and lower sides of the key 28, auxiliary tooth grooves 30 are formed on the upper and lower sides of the key 28 corresponding to the elastic installation of the pin 6 and the cooperating pin 12, a plurality of groups of side grooves 31 are formed on the two sides of the key 28 corresponding to each group of the first side position pin 14 and the second side position pin 17, and the main tooth grooves 29, the auxiliary tooth grooves 30 and the side grooves 31 formed on the key 28 corresponding to the pin 6, the cooperating pin 12, the first side position pin 14 and the second side position pin 17 are symmetrically formed, so that the key 28 can be used regardless of the direction of insertion into the inside of the inner lock core 2, and the side grooves 31 formed on the side of the key 28 are used as an encryption structure for cooperating with the first side position pin 14 and the second side position pin 17, which better improves the security of the overall use of the lock body.

[0045] As preferred, the installation positions of the first side position pin 14 and the second side position pin 17 correspond to the pin 6 and the cooperating pin 12, the key 28 is inserted into the inside of the key slot 27 to lift the pin 6, the cooperating pin 12, the first side position pin 14 and the second side position pin 17, the pin 6, the cooperating pin 12, the first side position pin 14 and the second side position pin 17 are retracted into the corresponding upper position perforation 11 and the bottom groove, and the end of the key 28 extends from the inside of the inner groove 10 to be inserted into the cross groove 26, the key 28 is arranged to extend into the inside of the rotating pipe 22 after pushing each group of the pin 6, the cooperating pin 12, the first side position pin 14 and the second side position pin 17 into the corresponding hole, the control of the use position of the rotating pin 23 is completed by inserting the key 28 into the cross groove 26, the opening and locking operation of the door lock is improved, and the security of the use of the inner lock core 2 is greatly improved.

[0046] Specific use mode:

[0047] The inner lock core 2 can be independently or combined used according to the specific use requirement, and a group of first side position pins 14 and second side position pins 17 are mainly arranged in the inner lock core 2 to further encrypt the side of the key 28, the difficulty in the unlocking state without the key 28 is improved by the different overall states of the first side position pin 14 and the second side position pin 17 and the different outer end structures of the first side position pin 14 and the second side position pin 17, thereby greatly improving the security of the use of the door lock and avoiding the opening problem of the door lock caused by directly contacting the pin 6 in the unlocking process without the key 28.

[0048] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A profile lock cylinder structure, characterized by: Including the inner lock core (2), several groups of the elastic installation of the pin (6) are installed inside the inner lock core (2), the inner lock core (2) is installed with the elastic installation of the corresponding elastic installation of the cooperation pin (12) in the position corresponding to each group of pin (6); The key slot (27) is opened in the center of the inner lock core (2), and the first side bit pin (14) and the second side bit pin (17) are elastically mounted on one side of the inner lock core (2) corresponding to the position of the key slot (27) inside; The first side bit pin (14) is provided with a flat mouth resisting block (16) at the front end, and the second side bit pin (17) is provided with a sharp mouth resisting block (18) at the front end; The side hole (13) is opened in the side edge of the inner lock core (2), the outer end of each group of the first side bit pin (14) is in a conical structure, two groups of baffles (15) are symmetrically installed on the outer arc surface of the first side bit pin (14), the outer arc surface of the baffle (15) is slidingly installed on the inner wall of the side hole (13), the outer end of the second side bit pin (17) is in a circular truncated cone structure, the outer arc surface of the second side bit pin (17) is slidingly installed on the inner wall of the side hole (13), and the flat mouth resisting block (16) and the sharp mouth resisting block (18) are elastically extended from inside the side hole (13) to inside the key slot (27).

2. The profile lock cylinder structure according to claim 1, wherein: The pin (6) is elastically pressed with a work type column (5) at the outer end, each group of the work type column (5) is provided with a group of supporting springs (4) for supporting and is installed at the outer end, and each group of the supporting spring (4) is provided with a group of limiting columns (3) and is installed at the outer end.

3. The profile lock cylinder structure according to claim 2, characterized in that: Each group of the pin (6) is used in different specifications, wherein a plurality of groups of the pin (6) and the work type column (5) are provided with a height supplementing column (7) therebetween.

4. The profile lock cylinder structure according to claim 3, wherein: The inner lock core (2) is fixedly installed with a protective shell (8) at the outer end, the inner lock core (2) is provided with an inner groove (10) at the other end, the inner lock core (2) is provided with a positioning groove (9) on the outer arc surface near one side of the inner groove (10), the inner lock core (2) is provided with a plurality of upper position through holes (11) on the outer arc surface, and the inner lock core (2) is provided with a bottom groove corresponding to each group of the upper position through hole (11) inside.

5. The profile lock cylinder structure according to claim 4, wherein: Each group of the pin (6) is elastically extended from inside the upper position through hole (11) to inside the key slot (27), each group of the height supplementing column (7) is filled and placed on the upper part of the shorter pin (6), each group of the cooperation pin (12) is movably installed in the bottom groove corresponding to each group of different specifications of the pin (6), and the first side bit pin (14) and the second side bit pin (17) are movably installed in the side hole (13).

6. A lock employing the profiled lock cylinder structure of any one of claims 2 to 5, characterised in that: Including the copper body lock shell (1), the top end of the copper body lock shell (1) is provided with a pin installation hole (19), the middle part of the copper body lock shell (1) is provided with a door bolt rotating groove (20), one group of clamping grooves (21) is respectively provided at both ends of the copper body lock shell (1), the rotating pipe (22) is rotatably installed in the door bolt rotating groove (20), and the rotating pin (23) is fixedly installed on the outer arc surface of the rotating pipe (22); The copper body lock shell (1) is symmetrically rotatably installed with two groups of inner lock cores (2) on both sides, the two groups of inner lock cores (2) are rotatable in opposite directions, and the two groups of inner lock cores (2) are rotatably inserted into the rotating pipe (22) corresponding to the sides, respectively. Also includes a key (28).

7. A lock according to claim 6 wherein: The protection shell (8) installed at the outer end of the inner lock core (2) is clamped into the inner part of the clamping groove (21), the limiting column (3), the supporting spring (4), the I-shaped column (5) and the pin (6) are installed in the pin installation hole (19), the supporting spring (4) pushes the pin (6) out of the pin installation hole (19), the rotating pipe (22) is symmetrically provided with a connecting groove (24) on the left and right sides, two groups of the inner lock core (2) are inserted into the connecting groove (24) through the door pin rotating groove (20), and the connecting groove (24) is clamped and installed, the positioning seat (25) is installed in the middle of the rotating pipe (22), and the cross groove (26) is provided in the middle of the positioning seat (25).

8. A lock according to claim 7, wherein: A plurality of groups of main tooth grooves (29) are oppositely provided on the upper and lower sides of the key (28), the auxiliary tooth grooves (30) are provided on the key (28) corresponding to the elastic installation of the pin (6) and the matching pin (12), and a plurality of groups of side grooves (31) are provided on the two sides of the key (28) corresponding to each group of the first side pin (14) and the second side pin (17).

9. A lock according to claim 8, wherein: The first side pin (14) and the second side pin (17) are installed in the positions corresponding to the pin (6) and the matching pin (12), the key (28) is inserted into the key slot (27), the pin (6), the matching pin (12), the first side pin (14) and the second side pin (17) are lifted, the pin (6), the matching pin (12), the first side pin (14) and the second side pin (17) are shrunk into the corresponding upper perforation (11) and the bottom groove, and the end of the key (28) is inserted into the cross groove (26) from the inner groove (10).

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