Anti-theft door lock with lockhole capable of being closed

Abstract

The utility model discloses an anti-theft door lock with a lockhole capable of being closed, which relates to the field of anti-theft door locks and comprises a shell, a lock cylinder is arranged at the lower end of one end of the shell, grips are rotatably connected to two ends of the shell, a fixing block is fixedly connected to one end of the inside of the shell, a connecting rod extends to one side of the fixing block, and the connecting rod is connected with the lock cylinder. A lock tongue is fixedly connected to the other side of the connecting rod, a locking mechanism used for reinforcing the shell is arranged on one side of the rotating block, and a lock hole shielding mechanism is arranged at the bottom end of the interior of the shell. According to the anti-theft door lock with the lockhole capable of being closed, when a first gear is driven by a rotating block to rotate, a guide block can be synchronously driven to rotate, so that the guide block can stir a shielding plate to move towards one side in the rotating process, the shielding plate shields a lock cylinder when moving, and when a limiting block is in a locking state, the lock cylinder is locked; and the lock cylinder can be shielded synchronously, so that the door body is effectively prevented from being forcibly opened by people through the lock hole when being locked.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-theft door locks, in particular to an anti-theft door lock with a lock hole capable of being closed. Background Art

[0002] According to the different principles of the lock core, anti-theft locks can be divided into pin locks, blade locks, magnetic locks, IC card locks, fingerprint locks, etc. Anti-theft door locks can fix the door body when in use, and can protect indoor property.

[0003] In the prior art, the Chinese patent with authorization announcement number CN210067665U discloses a hidden keyhole anti-theft door lock, comprising a door panel and a lock core, the lock core being located in the inner cavity of the door panel, a card slot being provided on the lower portion of the outer wall of the lock core, the card slot passing through the lock hole of the lock core, bearing seats being fixedly installed on the left and right sides of the lower portion of the inner cavity of the door panel, limiting blocks being welded to the rear wall and the lower portion of the front wall of the left bearing seat, a rotating shaft being clamped in the inner cavity of the bearing seat, a keyhole blocking plate being clamped in the outer wall of the rotating shaft, the upper portion of the keyhole blocking plate being located in the inner cavity of the card slot, a drive motor being screwed in the lower portion of the right wall of the inner cavity of the door panel, bevel gears being clamped on the output shaft of the drive motor and the outer wall of the rotating shaft, and the two sets of bevel gears being meshed, the structure is simple, the use is convenient, and the anti-theft performance is effectively improved.

[0004] The above-mentioned mechanism controls the position adjustment of the keyhole blocking plate through a gear combination, thereby improving the anti-theft performance. However, in actual use, a drive motor is required to control the gears to work. When the door lock has insufficient power, the keyhole blocking plate cannot block the keyhole. The traditional safety limit block cannot block the keyhole at the same time when limiting, resulting in poor anti-theft performance. Utility Model Content

[0005] The purpose of the utility model is to provide an anti-theft door lock that can close the keyhole, so as to solve the problem in the above background technology that the traditional safety limit block cannot simultaneously block the keyhole when limiting, resulting in weak anti-theft performance.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: an anti-theft door lock capable of closing a lock hole, comprising a housing, a lock cylinder being provided at the lower end of one end of the housing, handles being rotatably connected to both ends of the housing, a fixed block being fixedly connected to one end of the interior of the housing, a connecting rod being passed through the interior of the fixed block, the connecting rod extending to one side of the fixed block, and a lock tongue being fixedly connected to the other side of the connecting rod;

[0007] A rotating block is rotatably connected to the lower end of one end of the interior of the shell, and a locking mechanism for reinforcing the shell is provided on one side of the rotating block;

[0008] A lock hole blocking mechanism with a closable lock hole is provided at the bottom end of the shell. The lock hole blocking mechanism includes a blocking plate, and the blocking plate is slidably connected to the bottom end of the shell. A connecting spring is fixedly connected to one side of the blocking plate, and the connecting spring is connected to the shell. The blocking plate is provided at one end of the lock core.

[0009] Furthermore, the fixing block is connected to the locking tongue via a spring, a protrusion is fixedly connected to the middle position of one end of the handle, and the protrusion is arranged on one side between the fixing block and the connecting rod.

[0010] Furthermore, the locking mechanism includes a first gear, which is fixedly connected to the outside of the rotating block, one end of the shell is rotatably connected to a second gear matching the first gear, and one side of the second gear is fixedly connected to a fixed rod, and one side of the shell is slidably connected to a limiting block.

[0011] Furthermore, the limit block is connected to the housing via a spring, and the positions of the fixing rod and the limit block correspond to each other.

[0012] Furthermore, both ends of the first gear are fixedly connected to guide blocks, and the cross section of the guide blocks is arc-shaped, and one side of the guide blocks is engaged with one side of the shielding plate.

[0013] Furthermore, a lubrication mechanism for lubricating the limit block is provided on one side of the interior of the shell, the lubrication mechanism includes an oil bag, and the oil bag is fixedly connected to one side of the shell, the top of the oil bag is fixedly connected to a nozzle, one side of the oil bag is fixedly connected to a movable plate, and both ends of the movable plate are slidably connected to a guide rod, the guide rod is connected to the shell, the top of the baffle is fixedly connected to a propulsion plate, and the propulsion plate is provided on one side of the movable plate.

[0014] Furthermore, a return spring is wound around the outer side of the guide rod, and one side of the return spring is connected to the movable plate, and an elastic structure is formed between the movable plate and the housing through the return spring.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. By holding the handle and rotating it downward, the handle will drive the protrusion to rotate, causing the protrusion to move to the side and push the connecting rod to move, so that the connecting rod can pass through the fixed block and drive the lock tongue to move, and then the lock tongue moves into the interior of the housing, using the lock tongue to perform the basic door lock closing function;

[0017] Furthermore, the door lock is closed by controlling the lock block on one side through the lock core. In order to ensure the safety of the door lock when in use, the rotating block is rotated to drive the first gear to rotate, and the first gear is engaged with the second gear, so that the second gear rotates to one side and pushes the fixed rod, so that the fixed rod can push the limit block out to achieve the safety locking of the door lock. At the same time, a spring is provided on one side of the limit block, and the spring can assist the limit block in resetting its own position when the second gear is reset, so that the limit block can be flexibly limited and fixed according to different needs;

[0018] Furthermore, when the first gear is driven by the rotating block to rotate, it will synchronously drive the guide block to rotate, so that the guide block can move the shielding plate to one side during the rotation process. The shielding plate blocks the lock cylinder when moving, so that when the limit block is in the locked state, it can synchronously block the lock cylinder, effectively preventing the door body from being forcibly opened through the keyhole when it is locked;

[0019] 2. When the baffle is resetting, the push plate pushes the movable plate, squeezing the oil bag on one side of the movable plate. This causes the lubricating oil inside the oil bag to be squeezed out through the nozzle and sprayed onto the limit block, thereby lubricating the limit block and preventing it from getting stuck during repeated engagement.

[0020] Furthermore, after the movable plate is pressed, the elastic force of the reset spring can assist the movable plate to automatically reset, so that the oil bag can be repeatedly squeezed to spray out the lubricating oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0023] Figure 3 This is a schematic diagram of the connection structure between the handle and the lock tongue of the utility model;

[0024] Figure 4 This is a structural diagram of the lock hole shielding mechanism of the utility model;

[0025] Figure 5 This is a schematic diagram of the connection structure between the rotating block and the second gear of the utility model;

[0026] Figure 6 This is a schematic diagram of the connection structure between the first gear and the lock hole shielding mechanism of the present invention;

[0027] Figure 7 It is a structural diagram of the lubrication mechanism of the utility model.

[0028] In the figure: 1. Housing; 2. Lock cylinder; 3. Handle; 4. Bump; 5. Fixed block; 6. Connecting rod; 7. Lock tongue; 8. Rotating block; 9. First gear; 10. Second gear; 11. Fixed rod; 12. Limit block; 13. Guide block; 14. Shielding plate; 15. Connecting spring; 16. Oil bag; 17. Nozzle; 18. Movable plate; 19. Guide rod; 20. Return spring; 21. Push plate. DETAILED DESCRIPTION

[0029] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0030] Example 1:

[0031] like Figure 1-Figure 5 The technical solution shown is to solve the problem that the limit block 12 pops out and resets slowly when the anti-theft door lock is closed: the anti-theft door lock with a lock hole that can be closed discloses a limit block 12, including a shell 1, a lock core 2 is provided at the lower end of one end of the shell 1, and both ends of the shell 1 are rotatably connected to a handle 3, one end of the interior of the shell 1 is fixedly connected to a fixed block 5, and a connecting rod 6 passes through the interior of the fixed block 5, the connecting rod 6 extends to one side of the fixed block 5, and the other side of the connecting rod 6 is fixedly connected to a lock tongue 7, the fixed block 5 is connected to the lock tongue 7 by a spring, and a protrusion 4 is fixedly connected to the middle position of one end between the handle 3, and The protrusion 4 is arranged on one side between the fixed block 5 and the connecting rod 6, and the lower end of one end of the inside of the shell 1 is rotatably connected to the rotating block 8, and a locking mechanism for reinforcing the shell 1 is provided on one side of the rotating block 8. The locking mechanism includes a first gear 9, and the first gear 9 is fixedly connected to the outer side of the rotating block 8. One end of the shell 1 is rotatably connected to a second gear 10 matching the first gear 9, and one side of the second gear 10 is fixedly connected to a fixed rod 11. One side of the shell 1 is slidably connected to a limit block 12, and the limit block 12 is connected to the shell 1 by a spring, and the positions of the fixed rod 11 and the limit block 12 correspond to each other.

[0032] In this example, by holding the handle 3 and rotating it downward, the handle 3 drives the protrusion 4 to rotate during the rotation process, so that the protrusion 4 moves to one side and pushes the connecting rod 6 to move, so that the connecting rod 6 can pass through the fixed block 5 and drive the lock tongue 7 to move, thereby causing the lock tongue 7 to move into the interior of the housing 1, and the lock tongue 7 can play a basic door lock closing role;

[0033] The door lock is closed by controlling the lock block on one side through the lock cylinder 2. In order to ensure the safety of the door lock when in use, the rotating block 8 is rotated to drive the first gear 9 to rotate, and the first gear 9 is engaged with the second gear 10, so that the second gear 10 is rotated to one side and the fixed rod 11 is pushed forward, so that the fixed rod 11 can push the limit block 12 out to achieve the safety locking of the door lock. At the same time, a spring is provided on one side of the limit block 12. The spring can assist the limit block 12 in resetting its own position when the second gear 10 is reset, so that the limit block 12 can be flexibly limited and fixed according to different needs.

[0034] Example 2:

[0035] like Figure 2 、 Figure 4 、 Figure 5 and Figure 6 The technical solution shown is to solve the problem that the traditional safety limit block cannot block the lock hole at the same time when limiting, resulting in weak anti-theft performance: the anti-theft door lock with a lock hole that can be closed discloses a lock hole blocking mechanism, and a lock hole blocking mechanism with a lock hole that can be closed is provided at the bottom end of the shell 1. The lock hole blocking mechanism includes a blocking plate 14, and the blocking plate 14 is slidably connected to the bottom end of the shell 1. One side of the blocking plate 14 is fixedly connected to a connecting spring 15, and the connecting spring 15 is connected to the shell 1. The blocking plate 14 is provided at one end of the lock core 2, and both ends of the first gear 9 are fixedly connected to a guide block 13, and the cross-section of the guide block 13 is arc-shaped, and one side of the guide block 13 is engaged with one side of the blocking plate 14.

[0036] In this example, when the first gear 9 is driven by the rotating block 8 to rotate, it will synchronously drive the guide block 13 to rotate, so that the guide block 13 can push the baffle 14 to move to one side during the rotation. The baffle 14 blocks the lock cylinder 2 when moving, so that the limit block 12 can synchronously block the lock cylinder 2 when it is in the locked state, effectively preventing the door body from being forcibly opened through the lock hole when it is locked.

[0037] Example 3:

[0038] like Figure 1 、 Figure 2 、 Figure 4 and Figure 7The technical solution shown is to solve the problem that the limit block 12 is prone to jamming during repeated engagement: the anti-theft door lock with a lock hole that can close the lock hole discloses a lubrication mechanism, and a lubrication mechanism for lubricating the limit block 12 is provided on one side of the shell 1. The lubrication mechanism includes an oil bag 16, and the oil bag 16 is fixedly connected to one side of the shell 1, and the top of the oil bag 16 is fixedly connected to a nozzle 17, and one side of the oil bag 16 is fixedly connected to a movable plate 18, and both ends of the movable plate 18 are slidably connected to a guide rod 19, the guide rod 19 is connected to the shell 1, and the top of the baffle plate 14 is fixedly connected to a push plate 21, and the push plate 21 is provided on one side of the movable plate 18, and a return spring 20 is wound around the outside of the guide rod 19, and one side of the return spring 20 is connected to the movable plate 18, and an elastic structure is formed between the movable plate 18 and the shell 1 through the return spring 20.

[0039] In this example, when the baffle plate 14 is resetting, the thrust plate 21 will push the movable plate 18, so that the oil bag 16 on one side of the movable plate 18 is squeezed, so that the lubricating oil inside the oil bag 16 is squeezed out through the nozzle 17 and sprayed on the limit block 12, so that the limit block 12 is lubricated, avoiding the limit block 12 from getting stuck during repeated engagement.

[0040] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A theft-proof door lock capable of closing a lock hole, comprising a housing (1), a lock core (2) being provided at the lower end of one end of the housing (1), a handle (3) being rotatably connected to both ends of the housing (1), a fixed block (5) being fixedly connected to one end of the interior of the housing (1), a connecting rod (6) passing through the interior of the fixed block (5), the connecting rod (6) extending to one side of the fixed block (5), and a lock tongue (7) being fixedly connected to the other side of the connecting rod (6); Its characteristics are: A rotating block (8) is rotatably connected to the lower end of one end of the interior of the shell (1), and a locking mechanism for reinforcing the shell (1) is provided on one side of the rotating block (8); The bottom end of the interior of the shell (1) is provided with a lock hole shielding mechanism with a lock hole that can be closed. The lock hole shielding mechanism includes a shielding plate (14), and the shielding plate (14) is slidably connected to the bottom end of the interior of the shell (1). A connecting spring (15) is fixedly connected to one side of the shielding plate (14), and the connecting spring (15) is connected to the shell (1). The shielding plate (14) is provided at one end of the lock core (2).

2. The anti-theft door lock with a closable keyhole according to claim 1, characterized in that: The fixing block (5) is connected to the locking tongue (7) via a spring, and a protrusion (4) is fixedly connected to the middle position of one end of the handle (3), and the protrusion (4) is arranged on one side between the fixing block (5) and the connecting rod (6).

3. The anti-theft door lock with a closable keyhole according to claim 1, characterized in that: The locking mechanism comprises a first gear (9), the first gear (9) being fixedly connected to the outside of the rotating block (8), one end of the housing (1) being rotatably connected to a second gear (10) matching the first gear (9), and one side of the second gear (10) being fixedly connected to a fixing rod (11), and one side of the housing (1) being slidably connected to a limiting block (12).

4. The anti-theft door lock with a closable keyhole according to claim 3, characterized in that: The limiting block (12) is connected to the housing (1) via a spring, and the positions of the fixing rod (11) and the limiting block (12) correspond to each other.

5. The anti-theft door lock with a closable keyhole according to claim 3, characterized in that: Both ends of the first gear (9) are fixedly connected to guide blocks (13), and the cross section of the guide block (13) is arc-shaped. One side of the guide block (13) is engaged with one side of the shielding plate (14).

6. The anti-theft door lock with a closable keyhole according to claim 1, characterized in that: A lubricating mechanism for lubricating the limit block (12) is provided on one side of the interior of the housing (1), the lubricating mechanism comprising an oil bag (16), and the oil bag (16) is fixedly connected to one side of the housing (1), the top end of the oil bag (16) is fixedly connected to a nozzle (17), one side of the oil bag (16) is fixedly connected to a movable plate (18), and both ends of the movable plate (18) are slidably connected to guide rods (19), the guide rods (19) are connected to the housing (1), the top end of the shielding plate (14) is fixedly connected to a propulsion plate (21), and the propulsion plate (21) is provided on one side of the movable plate (18).

7. The anti-theft door lock with a closable keyhole according to claim 6, characterized in that: A return spring (20) is wound around the outer side of the guide rod (19), and one side of the return spring (20) is connected to the movable plate (18). An elastic structure is formed between the movable plate (18) and the housing (1) through the return spring (20).

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