Double-row double-opening anti-drilling lock cylinder
By using a double-row pin tumbler body structure and an improved lock cylinder assembly connection, the problems of complex existing double-opening lock cylinder structures and insufficient waterproofing have been solved, achieving both double-sided key insertion for unlocking and waterproofing.
Patent Information
- Application Number
- CN202520436731.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-13
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-03-13
AI Technical Summary
Existing double-lock cylinders have complex structures, and when a key is inserted into one cylinder, a key cannot be inserted into the other cylinder. They also lack waterproofing.
It adopts a double-row pin tumbler body structure, is equipped with drainage holes, and improves the connection relationship between the outer lock cylinder assembly, the dial wheel and the inner lock cylinder assembly to enable simultaneous key insertion from both sides to unlock, thereby increasing sealing and waterproofing.
It enables simultaneous key insertion from both sides to unlock, is waterproof, reduces wear and tear, and improves the sealing and strength of the lock cylinder.
Smart Images

Figure CN223922799U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lock cylinders, specifically a double-row, double-opening, drill-proof lock cylinder. Background Technology
[0002] Double-lock locks are very common in daily life, consisting of an outer lock cylinder and an inner lock cylinder, which are installed on the inside and outside of the door respectively. With existing lock cylinder structures on the market, when a key is inserted into either the inner or outer lock cylinder, the key cannot be inserted into the other lock cylinder.
[0003] A Chinese patent application with application number CN202323621035.0 discloses a lock cylinder with a relatively cumbersome and complex unlocking structure that needs improvement. Utility Model Content
[0004] The purpose of this utility model is to provide a double-row, double-opening anti-drill lock cylinder to solve the problems mentioned in the background art, which has the advantage of waterproof function.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a double-row, double-opening anti-drilling lock cylinder, comprising a housing, an outer lock cylinder assembly, a dial, and an inner lock cylinder assembly located within the housing. The outer lock cylinder assembly includes an outer lock cylinder, a first slot is provided on one side of the outer lock cylinder, the outer lock cylinder is engaged with a first locking block through the first slot, the first locking block is integrally connected to a first locking ring, the end of the first locking ring away from the first locking block is integrally connected to a second locking block, the first locking ring is engaged with a first connecting ring through the second locking block, the first connecting ring is provided with a second slot engaged with the second locking block, a third locking block is integrally connected to the side of the first connecting ring, the dial is provided with a third slot for accommodating the third locking block, a lock block is integrally connected to the side of the dial, a double-row array of pin bodies is provided within the housing and a corresponding pin slot is provided on the upper side of the housing, and at least one drain hole is provided on the side of the housing.
[0006] By adopting the above technical solution, the first slot rotates with the rotation of the outer lock cylinder, causing the first locking block to rotate, which in turn causes the first locking ring to rotate. The rotation of the first locking ring causes the second locking block to rotate, which in turn causes the first connecting ring, which is engaged with the second locking block, to rotate. The rotation of the first connecting ring causes the third locking block to rotate, which in turn causes the dial wheel, which is engaged with the third locking block, to rotate. The rotation of the dial wheel can cause the lock block to rotate. This solution uses a double-row pin body and is equipped with drainage holes, which has a waterproof function. When water is injected from the outside, the water is discharged from the drainage holes on the lock case and the dial wheel. The lock can be unlocked even if both keys are inserted at the same time. When a key is inserted on one side and rotated, the corresponding locking ring compresses the middle spring when a key is inserted on the other side. After rotating through a certain angle, the locking block enters the locking ring groove, causing the dial wheel to rotate.
[0007] It is worth noting that this solution improves the connection relationship between the outer lock cylinder assembly, the dial, and the inner lock cylinder assembly.
[0008] As a further embodiment of this utility model: the inner lock cylinder is provided with a fourth slot at one end of the dial, the fourth slot is engaged with a fourth block, the fourth block is integrally connected with a second ring, the second ring is provided with a fifth slot, the fifth slot is engaged with a fifth block, the fifth block is integrally connected with a second connecting ring, the side of the second connecting ring is integrally connected with a sixth block, and the third slot provided on the inner side of the dial is engaged with the sixth block.
[0009] By adopting the above technical solution, the fourth slot rotates with the rotation of the inner lock cylinder, which in turn drives the fourth locking block to rotate. The rotation of the fourth locking block drives the second locking ring to rotate, which in turn drives the fifth locking block to rotate. The rotation of the fifth locking block drives the second connecting ring to rotate, which in turn drives the sixth locking block to rotate. The rotation of the sixth locking block drives the dial wheel to rotate, which in turn drives the lock block to rotate.
[0010] As a further improvement of this utility model, a spring is provided between the first retaining ring and the second retaining ring.
[0011] By adopting the above technical solution, the spring is configured to allow the first retaining ring and the second retaining ring to move in a direction that moves away from each other.
[0012] As a further embodiment of this utility model: a groove is provided on the top of the shell, a reinforcing block is installed in the groove, the reinforcing block is connected to the shell by bolts, and the reinforcing block and the shell are connected by the same pin.
[0013] By adopting the above technical solution, the reinforcing block is placed in the groove and connected to the shell by bolts and pins to increase the strength of the shell.
[0014] As a further improvement of this utility model: a first limiting ring is provided between the outer locking cylinder and the dial wheel, and a second limiting ring is provided between the inner locking cylinder and the dial wheel.
[0015] By adopting the above technical solution, the setting of the first limiting ring and the second limiting ring reduces the wear between the outer lock cylinder, the inner lock cylinder and the dial, and can be used to lock the inner lock cylinder.
[0016] As a further improvement of this utility model: a sealing ring is installed on one side of the second connecting ring, and a gasket is provided on one side of the sealing ring.
[0017] By adopting the above technical solution, the gasket is used to fix the sealing ring, and the sealing ring increases the sealing performance. The gasket and the sealing ring are set inside the dial.
[0018] Compared with the prior art, the beneficial effects of this utility model are:
[0019] 1. The first slot rotates with the outer lock cylinder, causing the first locking block to rotate, which in turn causes the first locking ring to rotate. The rotation of the first locking ring causes the second locking block to rotate, which in turn causes the first connecting ring, which is engaged with the second locking block, to rotate. The rotation of the first connecting ring causes the third locking block to rotate, which in turn causes the dial wheel, which is engaged with the third locking block, to rotate. The rotation of the dial wheel causes the lock block to rotate. This design uses a double-row pin tumbler body and is equipped with drainage holes, providing a waterproof function.
[0020] It is worth noting that this solution improves the connection relationship between the outer lock cylinder assembly, the dial, and the inner lock cylinder assembly.
[0021] 2. It has an emergency unlocking function (keys can be inserted on both sides at the same time). It can be achieved by controlling different retaining rings through the inner and outer lock cylinders to drive the dial to rotate. When a key is inserted on one side and rotated, the corresponding retaining ring compresses the middle spring when a key is inserted on the other side. After rotating through a certain angle, the retaining block enters the retaining ring slot, driving the dial to rotate. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the structure of an embodiment;
[0023] Figure 2 This is a schematic diagram of the structure after removing a portion of the shell in an embodiment;
[0024] Figure 3 for Figure 2 A magnified view of a portion of region A in the middle;
[0025] Figure 4 This is a schematic diagram of the structure after removing a portion of the shell in an embodiment;
[0026] Figure 5 This is a schematic diagram of the structure after removing a portion of the shell and the ball body in the embodiment;
[0027] Figure 6 This is a schematic diagram of the structure of the first retaining ring in the embodiment;
[0028] Figure 7 for Figure 5 A schematic diagram of the structure after removing the spring;
[0029] Figure 8 for Figure 7 A magnified view of a portion of region B in the middle;
[0030] Figure 9 for Figure 7 A structural diagram from another perspective;
[0031] Figure 10 for Figure 9 A magnified view of a portion of region C in the middle;
[0032] Figure 11 This is a schematic diagram of the dial in the embodiment;
[0033] Figure 12 This is a schematic diagram of the second retaining ring in the embodiment;
[0034] In the diagram: 1. Housing; 2. Outer lock cylinder; 3. First slot; 4. First locking block; 5. First retaining ring; 6. Second locking block; 7. First connecting ring; 8. Second slot; 9. Third locking block; 10. Third slot; 11. Lock block; 12. Fourth slot; 13. Fourth locking block; 14. Second retaining ring; 15. Fifth slot; 16. Fifth locking block; 17. Second connecting ring; 18. Sixth locking block; 19. Dial wheel; 20. Spring; 21. Groove; 22. Reinforcing block; 23. Bolt; 24. First limiting ring; 25. Second limiting ring; 26. Inner lock cylinder; 27. Tumbler body; 28. Tumbler groove; 29. Drain hole; 30. Sealing ring; 31. Gasket. Detailed Implementation
[0035] The technical solutions in the embodiments of this utility model are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0036] In this embodiment of the utility model,
[0037] A type of double-row, double-opening anti-drill lock cylinder, such as Figures 1-12 As shown, the device includes a housing 1, an outer lock cylinder assembly, a dial 19, and an inner lock cylinder assembly located within the housing 1. The outer lock cylinder assembly includes an outer lock cylinder 2, with a first slot 3 on one side. The outer lock cylinder 2 is engaged with a first locking block 4 via the first slot 3. The first locking block 4 is integrally connected to a first locking ring 5. The end of the first locking ring 5 away from the first locking block 4 is integrally connected to a second locking block 6. The first locking ring 5 is engaged with a first connecting ring 7 via the second locking block 6. The first connecting ring 7 has a second slot 8 that engages with the second locking block 6. A third locking block 9 is integrally connected to the side of the first connecting ring 7. The dial 19 has a third slot 10 for accommodating the third locking block 9. A lock block 11 is integrally connected to the side of the dial 19. The housing 1 contains a double-row array of pin bodies 27, and the upper side of the housing 1 has corresponding pin slots 28. The side of the housing 1 has at least one drain hole 29.
[0038] The inner locking cylinder 26 is provided with a fourth slot 12 at one end of the dial 19. The fourth slot 12 is engaged with a fourth locking block 13. The fourth locking block 13 is integrally connected to a second locking ring 14. The second locking ring 14 is provided with a fifth slot 15. The fifth slot 15 is engaged with a fifth locking block 16. The fifth locking block 16 is integrally connected to a second connecting ring 17. The side of the second connecting ring 17 is integrally connected to a sixth locking block 18. The third slot 10 provided on the inner side of the dial 19 is engaged with the sixth locking block 18.
[0039] One end of the inner lock cylinder 26 is provided with a transverse ball hole, and a transverse ball is installed in the transverse ball hole. When the lock case is opened, the dial moves forward by the spring, the transverse ball pops out, and locks the dial. The sealing ring is designed to prevent water from entering the transverse ball hole.
[0040] A spring 20 is provided between the first retaining ring 5 and the second retaining ring 14.
[0041] The top of the housing 1 is provided with a groove 21, and a reinforcing block 22 is installed in the groove 21. The reinforcing block 22 is connected to the housing 1 by bolts 23, and the reinforcing block 22 and the housing 1 are provided with the same pin.
[0042] A first limiting ring 24 is provided between the outer locking cylinder 2 and the dial 19, and a second limiting ring 25 is provided between the inner locking cylinder 26 and the dial 19.
[0043] A sealing ring 30 is installed on one side of the second connecting ring 17, and a gasket 31 is provided on one side of the sealing ring 30.
[0044] Working principle:
[0045] As the outer lock cylinder 2 rotates, the first locking groove 3 drives the first locking block 4 to rotate, which in turn drives the first locking ring 5 to rotate. The rotation of the first locking ring 5 drives the second locking block 6 to rotate, which in turn drives the first connecting ring 7, which is engaged with the second locking block 6, to rotate. The rotation of the first connecting ring 7 drives the third locking block 9 to rotate, which in turn drives the dial wheel 19, which is engaged with the third locking block 9, to rotate. The rotation of the dial wheel 19 drives the lock block 11 to rotate.
[0046] It is worth noting that this solution improves the connection relationship between the outer lock cylinder assembly, the dial 19, and the inner lock cylinder assembly.
[0047] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A double cylinder double sided anti-drill lock cylinder comprising a housing (1), an outer lock cylinder assembly, a dial (19) and an inner lock cylinder assembly located within the housing (1), characterised in that: The outer lock cylinder assembly comprises an outer lock cylinder (2), one side of the outer lock cylinder (2) is provided with a first clamping groove (3), the first clamping groove (3) is clamped with a first clamping block (4), the first clamping block (4) is integrally connected with a first clamping ring (5), one end of the first clamping ring (5) away from the first clamping block (4) is integrally connected with a second clamping block (6), the first clamping ring (5) is clamped with a first connecting ring (7) through the second clamping block (6), the first connecting ring (7) is provided with a second clamping groove (8) clamped with the second clamping block (6), the side of the first connecting ring (7) is integrally connected with a third clamping block (9), the dial (19) is provided with a third clamping groove (10) for accommodating the third clamping block (9), the side of the dial (19) is integrally connected with a lock block (11), the shell (1) is provided with a plurality of pin bodies (27) arranged in double rows, and the upper side of the shell (1) is provided with corresponding pin grooves (28), the side of the shell (1) is provided with at least one drain hole (29).
2. The double cylinder, double sided, anti-drill lock core of claim 1, wherein: The inner lock cylinder (26) is provided with a fourth clamping groove (12) at one end of the dial (19), the fourth clamping groove (12) is clamped with a fourth clamping block (13), the fourth clamping block (13) is integrally connected with a second clamping ring (14), the second clamping ring (14) is provided with a fifth clamping groove (15), the fifth clamping groove (15) is clamped with a fifth clamping block (16), the fifth clamping block (16) is integrally connected with a second connecting ring (17), the side of the second connecting ring (17) is integrally connected with a sixth clamping block (18), and the third clamping groove (10) arranged on the inner side of the dial (19) is clamped with the sixth clamping block (18).
3. A double cylinder double-sided anti-drill lock core according to claim 2, characterized in that: The first clamping ring (5) and the second clamping ring (14) are provided with a spring (20) therebetween.
4. The dual pin tumbler lock cylinder of claim 1 wherein: The top of the shell (1) is provided with a groove (21), a reinforcing block (22) is mounted in the groove (21), the reinforcing block (22) is connected with the shell (1) through a bolt (23), and the reinforcing block (22) and the shell (1) are provided with a same pin.
5. The dual pin, dual sided, anti-drill cylinder of claim 1, wherein: The outer lock cylinder (2) and the dial (19) are provided with a first limiting ring (24), and the inner lock cylinder (26) and the dial (19) are provided with a second limiting ring (25).
6. A double cylinder, double sided, anti-drill lock core according to claim 2, characterized in that: The second connecting ring (17) is mounted with a sealing ring (30) on one side, and the sealing ring (30) is provided with a gasket (31) on one side.
Citation Information
Patent Citations
Lock cylinder structure capable of being opened in two directions simultaneously
CN221627907U