Lock structure

Abstract

The utility model relates to the field of locks, in particular to a lock structure which comprises a lock box, a panel is arranged at the through position of one side of the lock box, a rectangular groove is formed in the panel, a locking assembly penetrating through the rectangular groove is arranged in the lock box, through grooves penetrating into the lock box are further formed in the two sides of the lock box, and a limiting assembly linked with the locking assembly is arranged in the lock box. The lock cylinder, the shifting wheel, the shifting disc, the shifting shaft and other components are precisely matched, so that cooperative work of the locking assembly (the coupler knuckle) and the limiting assembly (the heaven and earth hook) is achieved, and the lock cylinder, the shifting wheel, the shifting disc, the shifting shaft and other components are matched precisely. And the door lock is ensured to be operated smoothly, safely and reliably in the locking and unlocking processes.

Description

Technical Field

[0001] This utility model relates to the field of locks, and in particular to lock structures. Background Technology

[0002] With increasing security demands, traditional locks have gradually revealed some shortcomings in their structural design. Firstly, the insufficient thickness of the latch 21 makes it prone to deformation or damage when subjected to external impacts, affecting the lock's durability and security. Secondly, the lock cylinder's fixing method typically relies on additional connectors, which are prone to breakage when subjected to forced entry such as prying or lifting the door; the limited number of fixing points also reduces the lock's stability. Furthermore, most ordinary locks use a single-direction latch 21 for initial locking, resulting in limited locking effectiveness when faced with multi-directional external forces.

[0003] Although some locks have introduced top and bottom hooks to enhance multi-directional locking, the locking mechanisms of the top and bottom hooks and the hook tongue 21 in traditional designs are relatively independent, lacking synchronous linkage functions and cumbersome operation.

[0004] In existing technologies, such as the patent with publication number CN103790447B, a lock structure is disclosed. This lock structure uses the rotation of the lock pin to drive the linkage between the main gear and the helical latch gear, thereby achieving the extension and retraction control of the hook tongue 21 and the helical latch. The main hook tongue 21 slides on the rotating shaft through a groove, and its rear vertical teeth mesh with the main gear to ensure the smooth extension and retraction of the hook tongue 21. The helical latch achieves its extension and retraction through the cooperation of the helical latch actuating component and the transmission gear. The locking component engages with the ratchet teeth through a pawl, and works with the locking torsion spring to ensure the stability of the lock in the closed state. In addition, the safety bolt provides additional security, and its rear end is linked with the rotating pin to further enhance the lock's protective capabilities. However, although this technology improves some of the original problems, there are still aspects that need further optimization.

[0005] First, its structure is relatively complex, containing multiple gears, torsion springs, and linkage components. This not only increases manufacturing and maintenance costs but may also affect overall reliability. Second, the lock primarily relies on the main latch 21 and the diagonal latch for locking, lacking multi-directional locking mechanisms such as deadbolts. Therefore, its security is insufficient when facing multi-directional external forces. Furthermore, the way the lock head is fixed may have similar problems to ordinary locks; the connection end is prone to breakage upon impact.

[0006] Therefore, based on the above-stated viewpoints, there is still room for improvement in existing lock structures. Utility Model Content

[0007] To solve the above problems, this utility model provides a lock structure, including a lock box, a panel is provided through one side of the lock box, a rectangular groove is provided on the panel, and a locking component passing through the rectangular groove is provided inside the lock box.

[0008] The lock box also has through slots on both sides that extend into its interior, and a limiting component that is linked to the locking component is installed inside the lock box.

[0009] A slot is also provided on one side of the lock box, and a torsion unit is installed in the slot to drive the locking component and the limiting component.

[0010] Preferably, the locking assembly includes a rotating shaft symmetrically inserted into the lock box, with a hook tongue rotating on the outer side of the rotating shaft. The two hook tongues are symmetrically distributed, and a portion of rotating teeth are provided on the outer side of the rotating end of the hook tongue, and the rotating teeth on the outer side of the two hook tongues mesh with each other.

[0011] Preferably, the limiting component includes a top and bottom hook that is slidably disposed in the corresponding through groove, and the two top and bottom hooks are symmetrically distributed. A driving plate is provided on the side of the hook tongue located in the lock box. A toggle shaft is provided on the driving plate. A toggle groove is opened on the side of the top and bottom hooks near the corresponding driving plate, and the corresponding toggle shaft is located in the toggle groove.

[0012] Preferably, the top and bottom hooks are bent on the side outside the lock box.

[0013] Preferably, the end of the deadbolt is provided with a limiting groove, and the lock box is provided with a limiting shaft that slides through to the corresponding limiting groove.

[0014] Preferably, the torsion unit includes a lock cylinder that rotates in a slot, a dial wheel fitted on the outside of the lock cylinder, and a dial plate that rotates inside the lock box.

[0015] The lock box also has a rotating pivot, and a handle lever is sleeved on the outside of the pivot. A lower connecting rod is hinged between the pivot and the handle lever on one side.

[0016] Preferably, a slanted tongue paddle is also fitted on the outside of the paddle shaft. An upper connecting rod is hinged to one side of the slanted tongue paddle. An arc-shaped groove is opened on the upper connecting rod. A synchronous shaft is provided on the other side of the paddle disk and passes through the arc-shaped groove. A synchronous groove is opened on the top and bottom hooks on one side, and the synchronous shaft also passes through the synchronous groove.

[0017] Preferably, the panel is also provided with a sliding groove, a slanted tongue is provided in the sliding groove, and a driving component for driving the slanted tongue to move is provided in the lock box. The driving component includes a support plate provided in the lock box, a support shaft is provided on the support plate, a push plate is slidably sleeved on the outside of the support shaft, and the other side of the slanted tongue lever is in contact with the lower side of the push plate.

[0018] Preferably, a spring is also provided between the push plate and the oblique tongue.

[0019] Preferably, a snap-fit ​​spring is provided between the dial and the lock box, and the two snap-fit ​​springs are staggered.

[0020] In summary, this application includes at least one of the following beneficial technical effects:

[0021] I. This utility model achieves the coordinated operation of the locking component (hook tongue) and the limiting component (top and bottom hooks) through the precise cooperation of components such as the lock cylinder, dial wheel, dial plate, and dial shaft, ensuring that the door lock operates smoothly and reliably during locking and unlocking.

[0022] Second, this utility model further enhances the security of the lock by setting up a slanted tongue and a snap-fit ​​spring; the slanted tongue can extend when needed to provide additional fixation; the snap-fit ​​spring effectively prevents the dial shaft from rotating accidentally, avoiding safety hazards caused by misoperation. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Figure 1 This is a schematic diagram of the main structure of this utility model.

[0025] Figure 2 This is a cross-sectional schematic diagram of the present invention.

[0026] Figure 3 This is a structural schematic diagram of the locking component of this utility model.

[0027] Figure 4 This is a structural schematic diagram of the limiting component of this utility model.

[0028] Figure 5 This is a schematic diagram of the structure of the torsion unit of this utility model.

[0029] Figure 6 This is a schematic diagram of the structure of the driving component of this utility model.

[0030] Figure 7 This is a schematic diagram of the structure of the present invention in the locked state.

[0031] Figure 8 This is a schematic diagram of the structure of this utility model in the open state.

[0032] In the diagram, 1. Lock box; 10. Panel; 11. Rectangular groove; 12. Slot; 2. Locking assembly; 20. Rotating shaft; 21. Hook tongue; 22. Rotating tooth; 3. Limiting assembly; 30. Top and bottom hooks; 31. Drive plate; 32. Actuating shaft; 33. Actuating groove; 34. Limiting groove; 35. Limiting shaft; 4. Torsion unit; 40. Lock cylinder; 41. Dial wheel; 42. Actuating disc; 43. Actuating shaft; 44. Handle lever; 45. Lower connecting rod; 46. Slanted tongue lever; 47. Upper connecting rod; 48. Arc groove; 49. Synchronizing shaft; 410. Synchronizing groove; 5. Drive assembly; 50. Slanted tongue; 51. Support plate; 52. Support shaft; 53. Push plate; 54. Spring; 55. Snap-fit ​​spring. Detailed Implementation

[0033] The following combination Figures 1 to 8 The embodiments of this utility model will be described in detail below.

[0034] This application discloses a lock structure, mainly used for security protection such as door locks; the lock uses a key to rotate the lock cylinder, which drives the latch and deadbolt to work together to lock and unlock the door; at the same time, the slanted latch can provide additional fixation and engage the spring to prevent accidental operation, ensuring the stability and reliability of the lock.

[0035] Example 1: Refer to Figure 1 and Figure 2 As shown, it includes a lock box 1, a panel 10, a rectangular groove 11, a locking component 2, a limiting component 3, a slot 12, and a torsion unit 4. The panel 10 is provided at a through-hole on one side of the lock box 1. The rectangular groove 11 is provided on the panel 10. The locking component 2 is provided inside the lock box 1, passing through the rectangular groove 11.

[0036] The lock box 1 also has through slots on both sides that extend into its interior, and the lock box 1 is equipped with a limiting component 3 that is linked to the locking component 2.

[0037] A slot 12 is also provided on one side of the lock box 1. A torsion unit 4 is provided in the slot 12 to drive the locking component 2 and the limiting component 3 to operate.

[0038] Reference Figure 2 and Figure 3 As shown, this is the locking assembly 2. Specifically, the locking assembly 2 includes a rotating shaft 20, a hook tongue 21, and a rotating tooth 22. Two rotating shafts 20 are symmetrically inserted inside the lock box 1. A hook tongue 21 rotates on the outside of the rotating shaft 20. The two hook tongues 21 are symmetrically distributed. A portion of the rotating tooth 22 is provided on the outside of the rotating end of the hook tongue 21, and the rotating teeth 22 on the outside of the two hook tongues 21 mesh with each other. That is, the hook tongue 21 can rotate on the outside of the corresponding rotating shaft 20. When one hook tongue 21 is driven to rotate by an external force, it can drive the other hook tongue 21 to rotate in a relative or opposite direction through the rotating tooth 22. The two hook tongues 21 lock or release the locking pin.

[0039] The hook tongue 21 used in this implementation is relatively thick, and the rotating end of the hook tongue 21 is located inside the main body of the lock box 1. Furthermore, the outer side of the hook tongue 21 contacts the rectangular groove 11, which further increases the anti-collision effect of the hook tongue 21.

[0040] Reference Figure 4 , Figure 7 and Figure 8As shown, the limiting component 3 is a limiting component 3. Specifically, the limiting component 3 includes a top and bottom hook 30, a driving plate 31, a toggle shaft 32, a toggle groove 33, a limiting groove 34, and a limiting shaft 35. The two top and bottom hooks 30 are slidably arranged in the corresponding through grooves, and the two top and bottom hooks 30 are symmetrically distributed. When the top and bottom hooks 30 are driven by an external force, they can move in the left and right directions under the limiting of the corresponding through groove.

[0041] A driving plate 31 is provided on one side of the hook tongue 21 inside the lock box 1. A toggle shaft 32 is provided on the driving plate. A toggle groove 33 is provided on the side of the top and bottom hooks 30 near the corresponding driving plate 31, and the corresponding toggle shaft 32 is located in the toggle groove 33. That is, when the top and bottom hooks 30 move in the left and right directions, the corresponding toggle shaft 32 can be toggle through the toggle groove 33, and the hook tongue 21 will be driven to rotate along its axis 20 through the corresponding driving plate 31. When the top and bottom hooks 30 move towards the outside of the lock box 1, the top and bottom hooks 30 indirectly drive the corresponding hook tongue 21 to rotate towards the outside of the lock box 1, clamping the lock pin. When the top and bottom hooks 30 move towards the inside of the lock box 1, the corresponding hook tongue 21 can be indirectly driven to retract into the lock box 1, no longer locking the lock pin. Therefore, when the hook tongue 21 is fixed, the top and bottom hooks 30 move synchronously into the insertion groove opened inside the door, improving the stability of the lock box 1, and locking the door synchronously with the hook tongue 21, further improving security.

[0042] The top and bottom hooks 30 are located on one side outside the lock box 1 and are bent.

[0043] The top and bottom hooks 30 have a limiting groove 34 at their ends, and the lock box 1 has a limiting shaft 35 that slides through the corresponding limiting groove 34. When the top and bottom hooks 30 move, the limiting shaft 35 can limit and guide the corresponding top and bottom hooks 30 through the limiting groove 34 to increase the sliding stability of the corresponding top and bottom hooks 30.

[0044] Reference Figure 5 , Figure 7 and Figure 8 As shown, this is the torsion unit 4; specifically, the torsion unit 4 includes a lock cylinder 40, a dial wheel 41, a dial plate 42, a dial shaft 43, a handle dial 44, a lower connecting rod 45, a tongue dial 46, an upper connecting rod 47, an arc groove 48, a synchronous shaft 49, and a synchronous groove 410. The lock cylinder 40 is rotatably mounted in the slot 12, and the dial wheel 41 is sleeved on the outside of the lock cylinder 40. The dial plate 42 rotates inside the lock box 1. The lock cylinder 40 is driven to rotate in the slot 12 by the key, and the lock cylinder 40 drives the dial wheel 41 to swing synchronously along its axis.

[0045] The lock box 1 is also rotatably equipped with a lever shaft 43. A handle lever 44 is sleeved on the outside of the lever shaft 43. A lower connecting rod 45 is hinged between one side of the lever disk 42 and the handle lever 44. When the lever disk 42 is driven to rotate by an external force, it can drive the handle lever 44 and the lever shaft 43 to rotate through the lower connecting rod 45.

[0046] A slanted tongue paddle 46 is also fitted on the outside of the paddle shaft 43. An upper connecting rod 47 is hinged to one side of the slanted tongue paddle 46. That is, when the paddle shaft 43 rotates, the upper connecting rod 47 can drive the paddle disc 42 to rotate.

[0047] An arc-shaped groove 48 is provided on the upper connecting rod 47, and a synchronous shaft 49 is provided on the other side of the actuating disk 42, which passes through the arc-shaped groove 48. A synchronous groove 410 is provided on the top and bottom hooks 30 on one side, and the synchronous shaft 49 also passes through the synchronous groove 410.

[0048] When the lock cylinder 40 drives the dial wheel 41 to swing toward the lower connecting rod 45, it can drive the lower connecting rod 45 to drive the dial shaft 43 to rotate counterclockwise. At this time, the dial plate 42 can drive the dial shaft 32 to move in the arc groove 48, limiting and guiding the upper connecting rod 47, so that the upper connecting rod 47 can move. At this time, the dial plate 42 can drive the corresponding top and bottom hooks 30 to move toward the outside of the lock box 1 through the cooperation of the synchronous shaft 49 and the synchronous groove 410. The top and bottom hooks 30 can drive the hook tongue 21 to rotate toward the outside of the lock box 1. At this time, it is in the locked state.

[0049] Furthermore, when the lock cylinder 40 drives the dial wheel 41 to swing toward the upper connecting rod 47, the dial wheel 41 contacts the end of the upper connecting rod 47, indirectly driving the dial shaft 43 to rotate clockwise. At this time, the synchronous shaft 49 on the dial plate 42 can indirectly drive the corresponding deadbolt 30 to move toward the lock box 1, and indirectly drive the hook tongue 21 to retract into the lock box 1. At this time, the structure is in the unlocked state.

[0050] Reference Figure 6 , Figure 7 and Figure 8As shown, a sliding groove is also provided on the panel 10, and a slanted tongue 50 is provided in the sliding groove. The slanted tongue 50 can move up and down in the sliding groove. The lock box 1 is provided with a driving component 5 for driving the slanted tongue 50 to move. Specifically, the driving component 5 includes the slanted tongue 50, a support plate 51, a support shaft 52, a push plate 53, a spring 54, and a snap-fit ​​spring piece 55. The support plate 51 is located inside the lock box 1. The support shaft 52 is provided on the support plate 51. The push plate 53 is slidably sleeved on the outside of the support shaft 52. The other side of the slanted tongue lever 46 is in contact with the lower side of the push plate 53. That is, when the slanted tongue lever 46 rotates counterclockwise, the slanted tongue lever 46 can drive the push plate 53 to move upward under the limit of the support shaft 52. Conversely, when the slanted tongue lever 46 moves clockwise, it does not drive the push plate 53 to move upward.

[0051] A spring 54 is also provided between the push plate 53 and the oblique tongue 50. That is, when the push plate 53 moves upward, the spring 54 can drive the oblique tongue 50 to move in the sliding groove, so that the end of the oblique tongue 50 moves outside the lock box 1. The spring 54 is used to buffer the push plate 53 to a certain extent, so as to avoid interference to the movement path of the push plate 53 when the oblique tongue 50 is stuck.

[0052] A snap-fit ​​spring 55 is provided between the dial 43 and the lock box 1, and the two snap-fit ​​springs 55 are staggered. The snap-fit ​​springs 55 are used to limit the rotation angle of the dial 43, so that after the dial 43 rotates to a certain angle, the two snap-fit ​​springs 55 snap into each other to limit the dial 43 and prevent the dial 43 from rotating accidentally.

[0053] During work:

[0054] Step 1: Initial state. In the locking assembly 2, two hooks 21 are symmetrically distributed inside the lock box 1, and the rotating teeth 22 on the outer side of the hooks 21 mesh with each other, and the lock pin is in a locked state. In the limiting assembly 3, two top and bottom hooks 30 are located in the through grooves on both sides of the lock box 1, in the initial position, and the hooks 21 are located inside the lock box 1, without locking the lock pin. In the torsion unit 4, the lock cylinder 40, the dial wheel 41, the dial plate 42, the dial shaft 43, the handle dial 44 and other components are in the initial position, and the oblique tongue 50 is located in the sliding groove and does not extend out of the lock box 1.

[0055] Step 2: Insert the key and rotate the lock cylinder 40. The key is inserted into the lock cylinder 40 and rotated, causing the dial 41 to swing along its axis. The dial 41 swings towards the lower connecting rod 45, causing the lower connecting rod 45 to rotate counterclockwise; the lower connecting rod 45 causes the dial shaft 43 to rotate counterclockwise, and the dial shaft 43 drives the dial plate 42 to rotate through the upper connecting rod 47; the synchronous shaft 49 on the dial plate 42 moves in the arc groove 48, and through the cooperation of the synchronous shaft 49 and the synchronous groove 410, it drives the deadbolt 30 to move towards the outside of the lock box 1.

[0056] Step 3: Locking the hook tongue 21. The top and bottom hooks 30 move the actuating shaft 32 through the actuating groove 33, causing the driving plate 31 to rotate. The driving plate 31 drives the hook tongue 21 to rotate along the axis of the rotating shaft 20, so that the locking pins of the two hook tongues 21 come closer to each other and lock. The top and bottom hooks 30 move into the insertion groove inside the door and move synchronously with the hook tongue 21 to limit and fix the door, improving safety.

[0057] Step 4: Insert the key and rotate the lock cylinder 40. The key rotation direction changes, and the dial 41 swings towards the upper connecting rod 47. The dial 41 contacts the end of the upper connecting rod 47, indirectly driving the dial shaft 43 to rotate clockwise. The dial shaft 43 drives the dial plate 42 to rotate through the upper connecting rod 47. The synchronous shaft 49 on the dial plate 42 drives the top and bottom hooks 30 to move towards the inside of the lock box 1.

[0058] Step 5: With the release of the hook tongue 21, the top and bottom hooks 30 move the actuating shaft 32 through the actuating groove 33, causing the driving plate 31 to rotate in the opposite direction. The driving plate 31 causes the hook tongue 21 to retract into the lock box 1, releasing the locking pin.

[0059] Step 6: Movement of the latch 50. When additional safety protection is required, rotate the latch lever 46. When rotating counterclockwise, the push plate 53 moves upward under the limit of the support shaft 52, and drives the latch 50 to move upward in the sliding groove through the spring 54, so that the end of the latch 50 extends out of the lock box 1; when rotating clockwise, the push plate 53 moves downward, and the latch 50 retracts into the sliding groove under the action of the spring 54.

[0060] Step 7: The function of the snap-fit ​​spring 55: After the pivot 43 rotates to a certain angle, the snap-fit ​​spring 55 set in the lock box 1 snaps into each other, limiting the pivot 43 and preventing the pivot 43 from rotating accidentally, thus ensuring the stability of the locked or unlocked state.

[0061] Step 8: After the key is rotated to the correct position, the lock cylinder 40, dial 41, dial plate 42, dial shaft 43 and other components return to their new stable positions. The positions of the hook tongue 21 and the oblique tongue 50 are adjusted accordingly according to the direction of operation to achieve locking or unlocking.

[0062] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and not restrictive in all respects.

[0063] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. Lock structure comprising a lock case (1), characterized in that: The lock box (1) is provided with a panel (10) on one side, the panel (10) is provided with a rectangular slot (11), and the lock box (1) is provided with a locking assembly (2) penetrating through the rectangular slot (11); The lock box (1) is also provided with a through slot penetrating into the inside of the lock box (1), and the lock box (1) is provided with a limiting assembly (3) linked with the locking assembly (2); The lock box (1) is also provided with a slot (12) on one side, and the slot (12) is provided with a torsion unit (4) for driving the locking assembly (2) and the limiting assembly (3) to operate.

2. The lock structure according to claim 1, characterized in that: The locking assembly (2) comprises a rotating shaft (20) symmetrically inserted into the lock box (1), the rotating shaft (20) is provided with a hook tongue (21) on the outer side, the two hook tongues (21) are symmetrically distributed, the hook tongue (21) is provided with a part of rotating teeth (22) on the outer side of the rotating end, and the rotating teeth (22) on the outer side of the two hook tongues (21) are meshed with each other.

3. The lock structure according to claim 2, characterized in that: The limiting assembly (3) comprises a heaven and earth hook (30) slidingly arranged in the corresponding through slot, and the two heaven and earth hooks (30) are symmetrically distributed, one side of the hook tongue (21) in the lock box (1) is provided with a driving plate (31), the driving plate is provided with a driving shaft (32), one side of the heaven and earth hook (30) close to the corresponding driving plate (31) is provided with a driving slot (33), and the corresponding driving shaft (32) is located in the driving slot (33).

4. The lock structure according to claim 3, characterized in that: The heaven and earth hook (30) on one side of the lock box (1) is in a bent shape.

5. The lock structure according to claim 3, wherein: The end of the heaven and earth hook (30) is provided with a limiting slot (34), and the lock box (1) is provided with a limiting shaft (35) slidingly penetrating into the corresponding limiting slot (34).

6. The lockset configuration of claim 1, wherein: The torsion unit (4) comprises a lock cylinder (40) rotating in the slot (12), the lock cylinder (40) is provided with a dial (41) on the outer side, the lock box (1) is provided with a dial plate (42) rotating in the lock box (1); The lock box (1) is also provided with a dial shaft (43) rotating in the lock box (1), the dial shaft (43) is provided with a handle dial (44) on the outer side, and the dial plate (42) is hingedly connected with the handle dial (44) on one side through a lower connecting rod (45).

7. The lock structure according to claim 6, characterized in that: The dial shaft (43) is also provided with a latch dial (46) on the outer side, the latch dial (46) is hingedly connected with an upper connecting rod (47) on one side, the upper connecting rod (47) is provided with an arc slot (48), the dial plate (42) is provided with a synchronous shaft (49) penetrating in the arc slot (48) on the other side, and the synchronous slot (410) is provided on one side of the heaven and earth hook (30), and the synchronous shaft (49) also penetrates in the synchronous slot (410).

8. The lock structure according to claim 7, characterized in that: The panel (10) is also provided with a sliding slot, the sliding slot is provided with a latch (50), and the lock box (1) is provided with a driving assembly (5) for driving the latch (50) to move, the driving assembly (5) comprises a supporting plate (51) provided in the lock box (1), the supporting plate (51) is provided with a supporting shaft (52), the supporting shaft (52) is slidingly provided with a push plate (53) on the outer side, and the other side of the latch dial (46) is in contact with the lower side of the push plate (53).

9. The lock structure according to claim 8, characterized in that: The push plate (53) and the latch (50) are also provided with a spring (54).

10. The lockset configuration of claim 6, wherein: The shaft (43) and the lock box (1) are provided with clamping elastic sheets (55), and the two clamping elastic sheets (55) are staggered.

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