A full-buried door escape lock for a cold storage

Abstract

The utility model relates to the technical field of escape lock, disclose a cold storage full -buried door escape lock, including door panel and door frame, the both sides of door panel are installed with inner shell and outer shell respectively, the one side of outer shell is rotatoryly provided with outer handle through first pivot, still rotatoryly connected with connecting rod in the outer shell, the one side of first pivot is connected with the one side of connecting rod, still rotoryly installed with lock tongue in the outer shell through second pivot, through the design of outer handle, connecting rod, lock tongue, inner handle, guide rod etc.

Description

Technical Field

[0001] This utility model relates to the field of escape lock technology, and in particular to an escape lock for a fully buried cold storage door. Background Technology

[0002] Cold storage doors are doors installed in cold storage equipment, freezer rooms, and other refrigerated environments to provide insulation and airtightness. With advancements in refrigeration and freezing technology, cold storage projects have expanded into more and more fields. This increasing penetration of refrigeration and freezing technology across various sectors has, to some extent, increased the demand for cold storage facilities. This increase in the number of cold storage facilities has led to a growing demand for cold storage panels.

[0003] In existing technologies, it is difficult for people inside to quickly open the door to escape in an emergency, which poses a great safety hazard, and the operation process is prone to jamming and inefficiency. Utility Model Content

[0004] The purpose of this utility model is to solve the problems existing in the prior art by proposing a fully buried escape lock for cold storage doors.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An escape lock for a fully embedded cold storage door includes a door panel and a door frame. An inner shell and an outer shell are respectively installed on both sides of the door panel. An outer handle is rotatably provided on one side of the outer shell via a first rotating shaft. A connecting rod is also rotatably connected inside the outer shell. One side of the first rotating shaft is connected to one side of the connecting rod. A locking tongue is also rotatably installed inside the outer shell via a second rotating shaft. One end of the locking tongue is connected to the other end of the connecting rod. A base is provided on one side of the outer shell. A limiting component is provided on the base. The locking tongue contacts the limiting component. The base is located on one side of the door frame.

[0007] An inner handle is slidably provided on one side of the inner shell, and a guide rod is provided on one side of the inner handle. The guide rod extends movably through the door panel into the outer shell, and a guide member is provided at one end of the guide rod. The guide member contacts the first rotating shaft and is used to lift the inner handle.

[0008] Preferably, the first rotating shaft includes a first shaft rotatably disposed within the housing and a main drive block rotatably disposed on the outer periphery of the first shaft. A first torsion spring is also disposed on the outer periphery of the first shaft. The first torsion spring is in contact with one side of the outer handle. One side of the main drive block is rotatably connected to one side of the connecting rod for driving the rotation of the connecting rod.

[0009] Preferably, both the outer shell and the inner shell are integrally molded from engineering plastics.

[0010] Preferably, the second rotating shaft includes a second shaft rod rotatably disposed within the housing, and the locking tongue is disposed on the second shaft rod.

[0011] Preferably, one side of the connecting rod is rotatably connected to one side of the locking tongue, so as to drive the locking tongue to rotate along the second shaft when the connecting rod rotates.

[0012] Preferably, the limiting member includes a third shaft rotatably disposed within the housing and a secondary drive block rotatably disposed on the outer periphery of the third shaft. A third torsion spring is disposed on the outer periphery of the third shaft, and the third torsion spring is in contact with the secondary drive block. One side of the secondary drive block is rotatably connected to the main drive block, and the guide rod is in contact with one side of the secondary drive block.

[0013] Preferably, the limiting member includes a roller rotatably disposed on one side of the base, which contacts the locking tongue.

[0014] Preferably, a spring is provided on the outer periphery of the guide rod, one end of the spring is connected to one side of the inner handle, and the other end of the spring is connected to the inner shell.

[0015] Preferably, the door panel is provided with a plurality of mounting holes, and the inner shell is provided with a plurality of bolts. The plurality of bolts are movably connected to the outer shell on the other side of the door panel through the corresponding mounting holes and threaded. The outer periphery of the plurality of bolts is provided with a hollow tube, and the hollow tube is integrally formed by PVC.

[0016] Preferably, a lock cylinder is provided inside the outer shell, and a lock spring is provided on the outer periphery of the lock cylinder. By inserting a key into the lock cylinder and rotating the lock cylinder, the lock spring is rotated to lock the connecting rod.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This utility model, through the design of an external handle, connecting rod, locking tongue, internal handle, and guide rod, realizes the function of bidirectional operation of the cold storage door from both inside and outside. From the outside, the door can be locked or opened by rotating the external handle, which drives the locking tongue and the limiting component through the connecting rod. From the inside, the internal handle can be slid, and the first rotating shaft can be rotated by the guide rod and the guide component, which in turn drives the external handle to rotate and open the door. In an emergency, it provides a convenient passage for personnel to escape. The operation process will not cause jamming and is smooth. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of an escape lock for a fully embedded door of a cold storage facility, as proposed in this utility model.

[0020] Figure 2 This is a schematic diagram of the inner shell of an escape lock for a fully buried cold storage door proposed in this utility model;

[0021] Figure 3This is a schematic diagram of the outer shell and inner shell of an escape lock for a fully buried cold storage door proposed in this utility model;

[0022] Figure 4 This is a schematic diagram of the outer shell and base of an escape lock for a fully embedded cold storage door proposed in this utility model;

[0023] Figure 5 This is a schematic diagram of the first shaft of an escape lock for a fully embedded cold storage door proposed in this utility model;

[0024] Figure 6 This is a schematic diagram of the secondary drive block of an escape lock for a fully buried cold storage door proposed in this utility model;

[0025] Figure 7 This is a schematic diagram of the inner shell of an escape lock for a fully buried cold storage door proposed in this utility model.

[0026] In the diagram: 1. Door panel; 2. Door frame; 3. Inner shell; 4. Outer shell; 5. Outer handle; 6. Connecting rod; 7. Lock tongue; 8. Base; 9. Inner handle; 10. Guide rod; 11. First shaft; 12. Main drive block; 13. First torsion spring; 14. Second shaft; 16. Third shaft; 17. Secondary drive block; 18. Third torsion spring; 19. Roller; 20. Spring; 21. Mounting hole; 22. Bolt; 23. Hollow tube; 24. Lock cylinder; 25. Lock spring. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Reference Figure 1-7 An escape lock for a fully embedded door of a cold storage facility includes a door panel and a door frame. An inner shell and an outer shell are respectively installed on both sides of the door panel. An outer handle is rotatably provided on one side of the outer shell via a first rotating shaft. A connecting rod is also rotatably connected inside the outer shell. One side of the first rotating shaft is connected to one side of the connecting rod. A locking tongue is also rotatably installed inside the outer shell via a second rotating shaft. One end of the locking tongue is connected to the other end of the connecting rod. A base is provided on one side of the outer shell. A limiting component is provided on the base. The locking tongue contacts the limiting component. The base is located on one side of the door frame.

[0029] An inner handle is slidably provided on one side of the inner shell, and a guide rod is provided on one side of the inner handle. The guide rod extends movably through the door panel into the outer shell, and a guide member is provided at one end of the guide rod. The guide member contacts the first rotating shaft and is used to lift the inner handle.

[0030] When in use, this device, through the design of its external handle, connecting rod, locking tongue, internal handle, and guide rod, enables bidirectional operation of the cold storage door from both inside and outside. From the outside, rotating the external handle drives the locking tongue and limiting device through the connecting rod to lock or open the door. From the inside, sliding the internal handle drives the first rotating shaft to rotate through the guide rod and guide device, which in turn drives the external handle to open the door. In emergencies, it provides a convenient escape route for personnel, and the operation is smooth and does not cause any jamming.

[0031] Furthermore, the first rotating shaft includes a first shaft rotatably disposed within the housing and a main drive block rotatably disposed on the outer periphery of the first shaft. A first torsion spring is also disposed on the outer periphery of the first shaft, and the first torsion spring contacts one side of the outer handle. One side of the main drive block is rotatably connected to one side of the connecting rod for driving the rotation of the connecting rod. The placement of the first torsion spring in the first rotating shaft allows the outer handle to automatically reset after rotation, eliminating the need for manual restoration and ensuring the stability of the outer handle in the non-operational state. This prevents the normal use of the lock from being affected by the positional deviation of the outer handle, enhancing the durability and reliability of the lock. The rotatable connection between the main drive block and the connecting rod ensures that power can be stably and efficiently transmitted to the connecting rod when the outer handle rotates, causing the connecting rod to rotate along a predetermined trajectory, thereby precisely driving the movement of the bolt. This ensures the smoothness of the locking and unlocking process and reduces power transmission losses and the probability of failure.

[0032] Furthermore, both the outer shell and the inner shell are integrally molded from engineering plastics. Engineering plastics have excellent low-temperature resistance and can maintain stable physical properties in the low-temperature environment of cold storage. They are not prone to embrittlement or cracking due to excessively low temperatures, which effectively ensures the structural integrity of the outer shell and the inner shell and extends the service life of the lock.

[0033] Furthermore, the second rotating shaft includes a second shaft rod rotatably disposed within the housing, and the lock tongue is disposed on the second shaft rod. The second rotating shaft adopts the structure of the second shaft rod, providing a stable rotation support point for the lock tongue, enabling the lock tongue to rotate flexibly around the second shaft rod, ensuring the accuracy of the lock tongue when contacting or separating from the limiting member, ensuring the tightness of the lock when locking and the smoothness when opening, and improving the overall stability of the lock.

[0034] Furthermore, one side of the connecting rod is rotatably connected to one side of the latch, which is used to drive the latch to rotate along the second shaft when the connecting rod rotates. The connecting rod and the latch are rotatably connected. When the connecting rod rotates, it can drive the latch to rotate around the second shaft, thereby separating the latch from the limiting member, ensuring the convenience of opening the door, and making the operation of the lock more flexible.

[0035] Furthermore, the limiting component includes a third shaft rotatably disposed within the housing and a secondary drive block rotatably disposed on the outer periphery of the third shaft. A third torsion spring is disposed on the outer periphery of the third shaft, and the third torsion spring is in contact with the secondary drive block. One side of the secondary drive block is rotatably connected to the main drive block, and the guide rod is in contact with one side of the secondary drive block. The third shaft, secondary drive block, and third torsion spring in the limiting component are connected to the main drive block through the secondary drive block. The guide rod can push the secondary drive block to rotate along the third shaft, and the rotation of the secondary drive block drives the main drive block to rotate along the first shaft. The main drive block drives the connecting rod to rotate, so that the latch can rotate flexibly around the second shaft, allowing the latch to separate from the limiting component and open the door panel. The third torsion spring enables the secondary drive block to automatically reset after being subjected to force, and the guide rod can transmit power more smoothly when in contact with the secondary drive block.

[0036] Furthermore, the limiting component includes a roller rotatably mounted on one side of the base, which contacts the latch. The limiting component uses a roller structure to contact the latch, transforming the sliding friction between the latch and the limiting component into rolling friction, greatly reducing the friction between the two, making the rotation of the latch smoother, reducing resistance during operation, reducing wear on components, extending the service life of the lock, and ensuring the flexibility of locking and unlocking after long-term use.

[0037] Furthermore, a spring is provided on the outer periphery of the guide rod. One end of the spring is connected to one side of the inner handle, and the other end of the spring is connected to the inner shell. The spring on the outer periphery of the guide rod allows the inner handle to automatically reset after sliding operation without manual intervention, simplifying the internal operation process.

[0038] Furthermore, the door panel is provided with several mounting holes, and the inner shell is provided with several bolts. The bolts are movably threaded through the corresponding mounting holes and connected to the outer shell on the other side of the door panel. The outer periphery of each bolt is provided with a hollow tube, which is integrally formed with PVC. The cooperation between the bolts and the corresponding mounting holes realizes the firm installation of the inner shell and the outer shell on the door panel, ensuring the stability of the overall structure of the lock. The hollow tubes around the bolts, which are integrally formed with PVC, can reduce the direct contact between the bolts and the door panel and avoid the impact of low temperature in the cold storage on the bolts.

[0039] Furthermore, the outer shell contains a lock cylinder, and the outer circumference of the lock cylinder is equipped with a lock spring. By inserting a key into the lock cylinder and rotating the lock cylinder, the lock spring rotates and locks the connecting rod. The design of the lock cylinder and lock spring increases the anti-theft function of the lock. When the lock cylinder is rotated by the key, the lock spring can lock the connecting rod, preventing the connecting rod from rotating normally, thereby locking the lock and preventing unauthorized personnel from opening the cold storage door from the outside, ensuring the safety of the items inside the cold storage.

[0040] 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 fully embedded cold storage door escape lock, comprising a door panel (1) and a door frame (2), wherein an inner shell (3) and an outer shell (4) are respectively installed on both sides of the door panel (1), characterized in that: An outer handle (5) is rotatably provided on one side of the outer shell (4) via a first rotating shaft. A connecting rod (6) is also rotatably connected inside the outer shell (4). One side of the first rotating shaft is connected to one side of the connecting rod (6). A locking tongue (7) is also rotatably installed inside the outer shell (4) via a second rotating shaft. One end of the locking tongue (7) is connected to the other end of the connecting rod (6). A base (8) is provided on one side of the outer shell (4). A limiting component is provided on the base (8). The locking tongue (7) contacts the limiting component. The base (8) is located on one side of the door frame (2). An inner handle (9) is slidably provided on one side of the inner shell (3), and a guide rod (10) is provided on one side of the inner handle (9). The guide rod (10) extends movably through the door panel (1) into the outer shell (4), and a guide member is provided at one end of the guide rod (10). The guide member is in contact with the first rotating shaft and is used to lift the inner handle (9).

2. The escape lock for a fully embedded cold storage door according to claim 1, characterized in that: The first rotating shaft includes a first shaft (11) rotatably disposed inside the housing (4) and a main drive block (12) rotatably disposed on the outer periphery of the first shaft (11). A first torsion spring (13) is also disposed on the outer periphery of the first shaft (11). The first torsion spring (13) is in contact with one side of the outer handle (5). One side of the main drive block (12) is rotatably connected to one side of the connecting rod (6) for driving the rotation of the connecting rod (6).

3. The escape lock for a fully embedded cold storage door according to claim 1, characterized in that: Both the outer shell (4) and the inner shell (3) are integrally molded from engineering plastics.

4. The escape lock for a fully embedded cold storage door according to claim 2, characterized in that: The second rotating shaft includes a second shaft (14) rotatably disposed within the housing (4), and the locking tongue (7) is disposed on the second shaft (14).

5. The escape lock for a fully embedded cold storage door according to claim 1, characterized in that: One side of the connecting rod (6) is rotatably connected to one side of the locking tongue (7), which is used to drive the locking tongue (7) to rotate along the second shaft (14) when the connecting rod (6) rotates.

6. The escape lock for a fully embedded cold storage door according to claim 1, characterized in that: The limiting component includes a third shaft (16) rotatably disposed inside the housing (4) and a secondary drive block (17) rotatably disposed on the outer periphery of the third shaft (16). A third torsion spring (18) is disposed on the outer periphery of the third shaft (16). The third torsion spring (18) is in contact with the secondary drive block (17). One side of the secondary drive block (17) is rotatably connected to the main drive block (12). The guide rod (10) is in contact with one side of the secondary drive block (17).

7. The escape lock for a fully embedded cold storage door according to claim 1, characterized in that: The limiting component includes a roller (19) rotatably disposed on one side of the base (8), which contacts the locking tongue (7) through the roller (19).

8. The escape lock for a fully embedded cold storage door according to claim 1, characterized in that: A spring (20) is provided on the outer periphery of the guide rod (10). One end of the spring (20) is connected to one side of the inner handle (9), and the other end of the spring (20) is connected to the inner shell (3).

9. The escape lock for a fully embedded cold storage door according to claim 1, characterized in that: The door panel (1) is provided with a number of mounting holes (21), and the inner shell (3) is provided with a number of bolts (22). The bolts (22) are movably connected to the corresponding mounting holes (21) and threadedly connected to the outer shell (4) on the other side of the door panel (1). The outer periphery of the bolts (22) is provided with hollow tubes (23), and the hollow tubes (23) are integrally formed by PVC.

10. The escape lock for a fully embedded cold storage door according to claim 1, characterized in that: The outer shell (4) is provided with a lock cylinder (24), and a lock spring (25) is provided on the outer periphery of the lock cylinder (24). By inserting a key into the lock cylinder (24) and then rotating the lock cylinder (24), the lock spring (25) is rotated and locked onto the connecting rod (6).

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