Reversing mechanism of door lock

Abstract

The utility model relates to the technical field of door locks, and discloses a reversing mechanism of a door lock, which comprises a lock body shell, a handle transmission shaft seat rotatably connected to the inner side wall of the lock body shell, a first connecting rod fixedly connected to the outer surface of the handle transmission shaft seat, and a second connecting rod rotatably connected to one end of the first connecting rod. The door lock reversing mechanism comprises a lock body shell, a reversing module is fixedly connected to the interior of the lock body shell, a driving module is movably connected to the inner side wall of the lock body shell, a spring bolt module is fixedly connected to one end of the driving module, and a notch matched with the driving module is formed in the outer surface of the lock body shell. Reversing of the door lock can be easily achieved by pulling the adjusting rod, operation is easy, convenient and efficient, stable operation of the limiting column is guaranteed through the internal specific structure, blocking is prevented, and stability during reversing is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of door lock technology, and more specifically, to a door lock reversing mechanism. Background Technology

[0002] In real-world building environments, doors can open in various directions. For example, some doors open to the left, while others open to the right. If the direction of the latch cannot be changed, the door cannot be installed and used properly. Taking a common single-latch door lock as an example, when the opening direction of the door changes, the latch needs to be reversed accordingly. This ensures that when the door is closed, the latch can accurately insert into the lock hole on the door frame to achieve the normal locking function.

[0003] There are various existing latch reversing structures, including lever reversing, bracket spring reversing, guide plate reset reversing, manual disassembly reversing, and screw adjustment reversing. These structures are generally cumbersome and inconvenient to operate, affecting reversing efficiency. At the same time, they are difficult for ordinary users to master, which is not conducive to improving users' ability to install the lock body independently and affects the user experience. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the above situation and to overcome the defects of the prior art, this utility model provides a door lock reversing mechanism, which aims to solve the problems in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a reversing mechanism for a door lock, comprising a lock body shell, characterized in that: a handle drive shaft seat is rotatably connected to the inner wall of the lock body shell; a first connecting rod is fixedly connected to the outer surface of the handle drive shaft seat; a second connecting rod is rotatably connected to one end of the first connecting rod; a reversing module is fixedly connected inside the lock body shell; a driving module is movably connected to the inner wall of the lock body shell; a latch module is fixedly connected to one end of the driving module; and a locking bolt module is formed on the outer surface of the lock body shell. The reversing module includes a slot for adaptation; the reversing module includes a steering barrel, which is fixedly connected to the inner wall of the lock body shell. The inner wall of the steering barrel has a first straight groove, a spiral groove at one end of the first straight groove, a second straight groove at one end of the spiral groove, and an inclined groove at one end of the second straight groove. A drive rod is movably connected to the inner wall of the steering barrel, a limit pin is inserted into the inner wall of the drive rod, and a limit baffle is fixedly connected to the outer surface of the right end of the drive rod.

[0008] The present invention is further configured such that the drive module includes a rack, the rack is slidably connected to the inner wall of the lower side of the steering barrel via a slide rail, a connecting plate is fixedly connected to the right end of the rack, the connecting plate is slidably connected to the outer surface of the drive rod and located between two limit plates, and a gear is rotatably connected to the inner wall of the lock body shell via a shaft, and an adjusting rod is fixedly connected to the outer surface of the gear.

[0009] The present invention is further configured such that the locking tongue module includes a rectangular column, the right end of which is fixedly connected to the left end of the drive rod, a limiting sleeve is sleeved on the outer surface of the left end of the rectangular column, a limiting groove is formed on the outer surface of the limiting sleeve, a limiting bolt is threadedly connected to the outer surface of the rectangular column, the outer surface of the limiting bolt is slidably connected to the inner sidewall of the limiting groove, a locking tongue body is fixedly connected to the left end of the limiting sleeve, a second spring is provided between the left end of the rectangular column and the right end of the locking tongue body, a sliding groove is formed on the outer surface of the limiting sleeve, a movable ring is rotatably connected to the outer surface of the sliding groove, and the outer surface of the movable ring is rotatably connected to one end of the second connecting rod through a hinge rod.

[0010] The present invention is further configured such that the outer surface of the limiting post is provided with a groove, there are two grooves and they are arranged symmetrically, a movable block is slidably connected to the inner wall of the right end of the driving rod, a limiting top block is fixedly connected to one side of the movable block, one end of the limiting top block is engaged with the inner wall of the groove, a first spring is fixedly connected to the other side of the movable block, and a threaded plug is threadedly connected to the inner wall of the right end of the driving rod.

[0011] Compared with the prior art, this utility model provides a reversing mechanism for a door lock, which has the following beneficial effects:

[0012] 1. The reversing mechanism of this door lock, through the arrangement of a reversing module, a drive module, and a latch module, enables the door lock to facilitate reversing. Through the coordinated arrangement of the reversing module, drive module, and latch module, the adjustment rod of the drive module can be directly moved during use. Through a series of transmission actions, the drive rod of the reversing module extends to the left inside the reversing cylinder and rotates during the extension process. This causes the latch module to follow the rotation direction, thereby facilitating the reversing of the door lock.

[0013] 2. The reversing mechanism of this door lock, through the arrangement of grooves, movable blocks, limiting top blocks, first springs and threaded plugs, enables the reversing mechanism of the door lock to facilitate the fixing of the position of the limiting post. Through the coordinated arrangement of grooves, movable blocks, limiting top blocks, first springs and threaded plugs, the limiting post can move more smoothly inside the first straight groove, spiral groove, second straight groove and inclined groove during use, effectively preventing the limiting post from getting stuck inside the reversing cylinder, and achieving the purpose of improving the stability during reversing. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a structural schematic diagram of the reversing module, driving module, and locking tongue module of this utility model;

[0016] Figure 3 This is an exploded structural diagram of the commutation module and drive module of this utility model;

[0017] Figure 4 This is a structural schematic diagram of the front cross-section of the steering bucket of this utility model;

[0018] Figure 5 This is a three-dimensional cross-sectional structural diagram of the steering bucket of this utility model;

[0019] Figure 6 This is a schematic diagram of the exploded structure of the locking tongue module of this utility model;

[0020] Figure 7 This utility model Figure 4 A schematic diagram of the structure at point A in the middle.

[0021] In the diagram: 1. Lock body shell; 2. Handle drive shaft seat; 3. First connecting rod; 4. Second connecting rod; 5. Groove; 6. Steering barrel; 7. First straight groove; 8. Spiral groove; 9. Second straight groove; 10. Inclined groove; 11. Drive rod; 12. Limiting post; 13. Groove; 14. Movable block; 15. Limiting top block; 16. First spring; 17. Threaded plug; 18. Limiting baffle; 19. Slide rail; 20. Rack; 21. Connecting plate; 22. Gear; 23. Adjusting rod; 24. Rectangular post; 25. Limiting sleeve; 26. Limiting groove; 27. Limiting bolt; 28. Second spring; 29. ​​Lock tongue body; 30. Sliding groove; 31. Movable ring; 32. Hinge rod. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0024] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0025] Please see Figures 1-7 A reversing mechanism for a door lock includes a lock body shell 1, characterized in that: a handle drive shaft seat 2 is rotatably connected to the inner wall of the lock body shell 1; a first connecting rod 3 is fixedly connected to the outer surface of the handle drive shaft seat 2; a second connecting rod 4 is rotatably connected to one end of the first connecting rod 3; a reversing module is fixedly connected inside the lock body shell 1; a drive module is movably connected to the inner wall of the lock body shell 1; a latch module is fixedly connected to one end of the drive module; and a slot 5 adapted to the drive module is provided on the outer surface of the lock body shell 1; the reversing module includes a steering barrel. 6. The steering barrel 6 is fixedly connected to the inner wall of the lock body shell 1. The inner wall of the steering barrel 6 is provided with a first straight groove 7. The inner wall of the steering barrel 6 is provided with a spiral groove 8 at one end of the first straight groove 7. The inner wall of the steering barrel 6 is provided with a second straight groove 9 at one end of the spiral groove 8. The inner wall of the steering barrel 6 is provided with a slanted groove 10 at one end of the second straight groove 9. The inner wall of the steering barrel 6 is movably connected to a drive rod 11. The inner wall of the drive rod 11 is inserted into a limit post 12. The outer surface of the right end of the drive rod 11 is fixedly connected to a limit baffle 18.

[0026] The drive module includes a rack 20, which is slidably connected to the inner wall of the lower side of the steering barrel 6 via a slide rail 19. A connecting plate 21 is fixedly connected to the right end of the rack 20. The connecting plate 21 is slidably connected to the outer surface of the drive rod 11 and is located between two limit plates 18. A gear 22 is rotatably connected to the inner wall of the lock body shell 1 via a shaft. An adjusting rod 23 is fixedly connected to the outer surface of the gear 22.

[0027] The locking tongue module includes a rectangular post 24. The right end of the rectangular post 24 is fixedly connected to the left end of the drive rod 11. A limiting sleeve 25 is sleeved on the outer surface of the left end of the rectangular post 24. A limiting groove 26 is formed on the outer surface of the limiting sleeve 25. A limiting bolt 27 is threadedly connected to the outer surface of the rectangular post 24. The outer surface of the limiting bolt 27 is slidably connected to the inner wall of the limiting groove 26. A locking tongue body 29 is fixedly connected to the left end of the limiting sleeve 25. A second spring 28 is provided between the left end of the rectangular post 24 and the right end of the locking tongue body 29. A sliding groove 30 is formed on the outer surface of the limiting sleeve 25. A movable ring 31 is rotatably connected to the outer surface of the sliding groove 30. The outer surface of the movable ring 31 is rotatably connected to one end of the second connecting rod 4 through a hinge rod 32.

[0028] Specifically, through the coordinated design of the reversing module, drive module, and latch module, the operation of the adjusting rod 23 enables the door lock to reverse. The meshing transmission between the gear 22 and the rack 20 converts the rotation of the adjusting rod 23 into the linear motion of the rack 20, precisely controlling the movement of the drive rod 11. The sliding connection between the connecting plate 21 and the drive rod 11, as well as the setting of the limit plate 18, ensure that the drive rod 11 is stably driven. The cooperation between the first straight groove 7, the spiral groove 8, the second straight groove 9, and the inclined groove 10 inside the steering barrel 6 and the limit post 12 causes the drive rod 11 to rotate along a predetermined trajectory during movement. That is, it first moves to the left within the first straight groove 7, and then rotates along the trajectory of the spiral groove 8 after reaching the spiral groove 8. It then reaches the left end of the second straight groove 9, which makes the drive rod 11 more stable and ensures that it will not deviate into the spiral groove 8 when returning to its original position. This drives the latch module to change direction, thus facilitating the door lock reversing. When the drive rod 11 returns, due to the setting of the inclined groove 10, it will abut against the lower end of the limiting post 12, causing the limiting post 12 to rise. At this time, the upper end of the limiting post 12 is locked into the first straight groove 7. Compared with the traditional reversing structure, the operation is simpler and more efficient.

[0029] Please see Figure 1-7 The reversing module includes a steering barrel 6, which is fixedly connected to the inner wall of the lock body shell 1. The inner wall of the steering barrel 6 has a first straight groove 7, a spiral groove 8 at one end of the first straight groove 7, a second straight groove 9 at one end of the spiral groove 8, and an inclined groove 10 at one end of the second straight groove 9. A drive rod 11 is movably connected to the inner wall of the steering barrel 6. A limit post 12 is inserted into the inner wall of the drive rod 11, and a limit baffle 18 is fixedly connected to the outer surface of the right end of the drive rod 11.

[0030] The outer surface of the limiting post 12 is provided with a groove 13. There are two grooves 13 arranged symmetrically. The inner wall of the right end of the drive rod 11 is slidably connected to a movable block 14. One side of the movable block 14 is fixedly connected to a limiting top block 15. One end of the limiting top block 15 is engaged with the inner wall of the groove 13. The other side of the movable block 14 is fixedly connected to a first spring 16. The inner wall of the right end of the drive rod 11 is threadedly connected to a threaded plug 17.

[0031] Specifically, the coordinated arrangement of the groove 13, movable block 14, limiting top block 15, first spring 16, and threaded plug 17 effectively improves stability during reversal. The groove 13 engages with the limiting top block 15, restricting the radial movement of the limiting post 12 and ensuring that it moves along a predetermined path within the steering barrel 6. The first spring 16 provides continuous thrust, ensuring that the limiting top block 15 and the groove 13 remain engaged at all times, preventing the limiting post 12 from wobbling or deviating from its predetermined trajectory during movement. The threaded plug 17 fixes the position of the movable block 14, preventing it from dislodging, further enhancing the stability of the overall structure, effectively preventing the limiting post 12 from jamming inside the steering barrel 6, and ensuring smooth door lock reversal.

[0032] In summary, when using the overall equipment: First, confirm that the opening and closing direction of the door needs to be changed, and match the direction of the door lock latch. At this time, observe the slot 5 on the outer surface of the lock body shell 1 that matches the drive module, and prepare for the reversing operation. Directly move the adjusting rod 23 on the drive module. The adjusting rod 23 is fixed on the outer surface of the gear 22. Moving the adjusting rod 23 will drive the gear 22 to rotate around the shaft. When the gear 22 rotates, the rack 20 meshing with the gear 22 slides on the slide rail 19. The rack 20 is slidably connected to the inner side wall of the lower side of the steering barrel 6 through the slide rail 19, ensuring the stable sliding of the rack 20. The connecting plate 21 fixed at the right end of the rack 20 slides on the outer surface of the drive rod 11, and the connecting plate 21 is located between the two limit plates 18 on the outer surface of the right end of the drive rod 11, driving the drive rod 11 to move inside the steering barrel 6. The limit post 12 inserted into the inner side wall of the drive rod 11 rotates. The drive rod 11 moves into the first straight groove 7, spiral groove 8, second straight groove 9 and inclined groove 10 on the inner wall of the barrel 6. As the drive rod 11 extends to the left, the limiting post 12 moves in the grooves of different shapes, causing the drive rod 11 to rotate during the extension process. During this process, the groove 13 symmetrically arranged on the outer surface of the limiting post 12, the movable block 14 slidably connected to the inner wall of the right end of the drive rod 11, the limiting top block 15 on the movable block 14, the first spring 16 and the threaded plug 17 work together. The first spring 16 pushes the movable block 14, so that the limiting top block 15 is always locked in the groove 13, ensuring the stable operation of the limiting post 12 and preventing it from getting stuck in the turning barrel 6, ensuring that the drive rod 11 moves along the predetermined trajectory. The rectangular post 24 at the left end of the drive rod 11 drives the locking tongue module to move. The limiting sleeve 25, which is fitted to the left end of the rectangular column 24, restricts the movement direction of the limiting sleeve 25 through the cooperation of the limiting bolt 27 and the limiting groove 26. The second spring 28 set between the rectangular column 24 and the lock tongue body 29 plays a buffering role. The movable ring 31, which is rotatably connected to the sliding groove 30 on the outer surface of the limiting sleeve 25, is rotatably connected to one end of the second connecting rod 4 through the hinge rod 32. When the drive rod 11 rotates, it drives the lock tongue body 29 to follow the rotation direction and complete the door lock reversal. After the reversal is completed, the door lock can be installed on the corresponding door to ensure that the direction of the latch matches the opening and closing direction of the door and realize the normal locking function. When the door is closed, the latch can accurately insert into the lock hole on the door frame to complete the door lock usage process.

[0033] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A reversing mechanism of a door lock comprising a lock body housing (1), characterized in that: The inner side wall of the lock body shell (1) is rotationally connected with a handle transmission shaft seat (2), the outer surface of the handle transmission shaft seat (2) is fixedly connected with a first connecting rod (3), one end of the first connecting rod (3) is rotationally connected with a second connecting rod (4), the inside of the lock body shell (1) is fixedly connected with a reversing module, the inner side wall of the lock body shell (1) is movably connected with a driving module, one end of the driving module is fixedly connected with a lock tongue module, the outer surface of the lock body shell (1) is provided with a notch (5) matched with the driving module; the reversing module comprises a steering barrel (6), the steering barrel (6) is fixedly connected to the inner side wall of the lock body shell (1), the inner side wall of the steering barrel (6) is provided with a first straight groove (7), the inner side wall of the steering barrel (6) is provided with a spiral groove (8) at one end of the first straight groove (7), the inner side wall of the steering barrel (6) is provided with a second straight groove (9) at one end of the spiral groove (8), the inner side wall of the steering barrel (6) is provided with an inclined groove (10) at one end of the second straight groove (9), the inner side wall of the steering barrel (6) is movably connected with a driving rod (11), the inner side wall of the driving rod (11) is inserted with a limiting column (12), the outer surface of the right end of the driving rod (11) is fixedly connected with a limiting baffle (18).

2. A reversing mechanism for a door lock according to claim 1, characterised in that: The driving module comprises a rack (20), the rack (20) is slidingly connected to the inner side wall of the lower side of the steering barrel (6) through a sliding rail (19), the right end of the rack (20) is fixedly connected with a connecting plate (21), the connecting plate (21) is slidingly connected to the outer surface of the driving rod (11) and located between the two limiting baffles (18), the inner side wall of the lock body shell (1) is rotationally connected with a gear (22) through a shaft, the outer surface of the gear (22) is fixedly connected with an adjusting rod (23).

3. A reversing mechanism for a door lock according to claim 1, characterized in that: The lock tongue module comprises a rectangular column (24), the right end of the rectangular column (24) is fixedly connected to the left end of the driving rod (11), the outer surface of the left end of the rectangular column (24) is sleeved with a limiting sleeve (25), the outer surface of the limiting sleeve (25) is provided with a limiting groove (26), the outer surface of the rectangular column (24) is threadedly connected with a limiting bolt (27), the outer surface of the limiting bolt (27) is slidingly connected to the inner side wall of the limiting groove (26), the left end of the limiting sleeve (25) is fixedly connected with a lock tongue body (29), the left end of the rectangular column (24) and the right end of the lock tongue body (29) are provided with a second spring (28), the outer surface of the limiting sleeve (25) is provided with a sliding groove (30), the outer surface of the sliding groove (30) is rotationally connected with a movable ring (31), the outer surface of the movable ring (31) is rotationally connected with one end of the second connecting rod (4) through a hinged rod (32).

4. A reversing mechanism for a door lock according to claim 1, characterized in that: The outer surface of the limiting column (12) is provided with a groove (13), the groove (13) is provided with two and symmetrically arranged, the inner side wall of the right end of the drive rod (11) is slidably connected with a movable block (14), one side of the movable block (14) is fixedly connected with a limiting top block (15), one end of the limiting top block (15) is clamped with the inner side wall of the groove (13), the other side of the movable block (14) is fixedly connected with a first spring (16), and the inner side wall of the right end of the drive rod (11) is threadedly connected with a threaded plug (17).

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