A single-leaf swing door escape lock for cold storage

Abstract

This utility model relates to the field of escape lock technology and discloses an escape lock for a single-leaf swing door of a cold storage, including a door panel and a door frame. An outer shell and an inner shell are respectively installed on both sides of the door panel. An inner handle is rotatably mounted on one side of the inner shell via a pivot. A connecting rod is rotatably connected to one side of the inner handle, and a locking tongue is rotatably mounted on the other side of the connecting rod. One end of the locking tongue is rotatably connected to the inner shell. A base is provided on one side of the inner shell, which can be hooked by the locking tongue. The base is located on one side of the door frame. By setting a rotatable inner handle, connecting rod, and locking tongue in the inner shell, and cooperating with the base on the door frame, the door locking function is achieved. When the inner handle is rotated, it can drive the locking tongue to disengage from the base, easily completing the door opening operation. The outer handle and guide rod design on the outer shell allows the door to be opened from the outside. Rotating the outer handle can lift the inner handle through the guide rod, thereby driving the locking tongue to move, ensuring convenient opening from both the inside and outside.

Description

Technical Field

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

[0003] In the existing technology, traditional cold storage door locks are insufficient in terms of ease of operation. Some locks can only be opened easily from one side, which may delay the escape time of personnel in an emergency. Even locks that can be operated from both sides have complex internal transmission structures, which often require a large amount of operating force. Moreover, in low-temperature environments, the components are prone to jamming, making it difficult to open the door. They cannot meet the core requirement of escape locks to open and close quickly in an emergency. Utility Model Content

[0004] The purpose of this utility model is to solve the problems existing in the prior art by proposing an escape lock for a single swing door of a cold storage.

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

[0006] An escape lock for a single swing door of a cold storage facility includes a door panel and a door frame. An outer shell and an inner shell are respectively installed on both sides of the door panel. An inner handle is rotatably provided on one side of the inner shell via a pivot. A connecting rod is rotatably connected to one side of the inner handle. A locking tongue is rotatably installed on the other side of the connecting rod. One end of the locking tongue is rotatably connected to the inner shell. A base is provided on one side of the inner shell, and the locking tongue can hook onto the base. The base is located on one side of the door frame.

[0007] An outer handle is rotatably mounted on one side of the outer shell via a pivot. A guide rod is provided on one side of the outer handle. The guide rod extends movably through the door panel into the inner shell, and the position of the guide rod corresponds to that of the inner handle, which is used to lift the inner handle.

[0008] Preferably, a torsion spring is provided on one side of both the inner and outer handles, and the torsion spring is located at the pivot of the corresponding inner and outer handles.

[0009] Preferably, a lock cylinder is provided inside the outer casing, 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 and locked onto the outer handle.

[0010] Preferably, a spring is provided on one side of the inner handle, and the other side of the spring is connected to the inner shell.

[0011] Preferably, the door panel is provided with two mounting holes, and the inner shell is provided with two bolts, which are movably connected to the outer shell on the other side of the door panel through the corresponding mounting holes.

[0012] Preferably, both bolts are provided with hollow tubes on their outer periphery, and the hollow tubes are integrally formed using PVC.

[0013] Preferably, a slot is provided on one side of the base, and a protrusion is provided on one side of the locking tongue, with the protrusion located within the slot.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This utility model achieves the door locking function by setting a rotatable inner handle, connecting rod and locking tongue in the inner shell, and cooperating with the base on the door frame. When the inner handle is rotated, it can drive the locking tongue to disengage from the base, and easily complete the door opening operation. The design of the outer handle and guide rod on the outer shell allows the door to be opened from the outside. Rotating the outer handle can push up the inner handle through the guide rod, thereby driving the locking tongue to move, ensuring that the door can be opened conveniently from both the inside and outside. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of an escape lock for a single swing door of a cold storage facility, as proposed in this utility model.

[0017] Figure 2 This is a schematic diagram of the inner shell of an escape lock for a single swing door of a cold storage facility, as proposed in this utility model.

[0018] Figure 3 This is a schematic diagram of the inner shell of an escape lock for a single swing door of a cold storage facility, as proposed in this utility model.

[0019] Figure 4 This is a schematic diagram of the internal casing of an escape lock for a single swing door of a cold storage facility, as proposed in this utility model.

[0020] Figure 5 This is a disassembly diagram of the internal structure of the outer shell of an escape lock for a single swing door of a cold storage facility, as proposed in this utility model.

[0021] Figure 6 This is a schematic diagram of the internal structure of the inner shell of an escape lock for a single swing door of a cold storage facility, as proposed in this utility model.

[0022] In the diagram: 1. Door panel; 2. Door frame; 3. Outer shell; 4. Inner shell; 5. Inner handle; 6. Connecting rod; 7. Lock tongue; 8. Base; 9. Outer handle; 10. Guide rod; 11. Torsion spring; 12. Lock cylinder; 13. Lock spring; 14. Spring; 15. Mounting hole; 16. Bolt; 17. Hollow tube; 18. Slot; 19. Protrusion. Detailed Implementation

[0023] 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.

[0024] Reference Figures 1-6 An escape lock for a single swing door of a cold storage facility includes a door panel and a door frame. An outer shell and an inner shell are respectively installed on both sides of the door panel. An inner handle is rotatably provided on one side of the inner shell via a pivot. A connecting rod is rotatably connected to one side of the inner handle. A locking tongue is rotatably installed on the other side of the connecting rod. One end of the locking tongue is rotatably connected to the inner shell. A base is provided on one side of the inner shell. The locking tongue can hook onto the base. The base is located on one side of the door frame.

[0025] An outer handle is rotatably mounted on one side of the outer shell via a pivot. A guide rod is provided on one side of the outer handle. The guide rod extends movably through the door panel into the inner shell, and the position of the guide rod corresponds to that of the inner handle, which is used to lift the inner handle.

[0026] When in use, this device achieves the door locking function by setting a rotatable inner handle, connecting rod and locking tongue in the inner shell, in conjunction with the base on the door frame. When the inner handle is turned, it can drive the locking tongue to disengage from the base, making it easy to open the door. The design of the outer handle and guide rod on the outer shell allows the door to be opened from the outside. Turning the outer handle can push up the inner handle through the guide rod, thereby driving the locking tongue to move, ensuring that the door can be opened conveniently from both the inside and outside.

[0027] Furthermore, a torsion spring is provided on one side of both the inner and outer handles. The torsion spring is located at the pivot of the corresponding inner and outer handles. After the handle rotation operation is completed, the torsion spring at the pivot of the inner and outer handles can use its own elastic restoring force to drive the handle to automatically return to the initial position without manual reset. This simplifies the operation process and ensures that the handle is always in the correct initial state, avoiding the normal locking function of the lock due to the handle not being reset.

[0028] Furthermore, the outer casing contains a lock cylinder, and the outer periphery 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 outer handle. The lock cylinder and lock spring inside the outer casing cooperate, and by inserting a key into the lock cylinder and rotating it, the lock spring rotates and locks the outer handle, realizing the door locking function. This effectively prevents unauthorized personnel from opening the door from the outside, enhancing the security of the cold storage. At the same time, the key unlocking method is simple and convenient, ensuring that authorized personnel can quickly and normally open the door.

[0029] Furthermore, a spring is provided on one side of the inner handle, and the other side of the spring is connected to the inner shell. The spring connected to one side of the inner handle is connected to the inner shell, which further enhances the reset capability of the inner handle. On the basis of the torsion spring reset, the spring can provide additional reset force, ensuring that the inner handle can be accurately and quickly reset under various conditions, avoiding the lock tongue from failing to lock properly due to poor inner handle reset, and improving the stability and reliability of the lock.

[0030] Furthermore, the door panel is provided with two mounting holes, and the inner shell is provided with two bolts. The two bolts pass through the corresponding mounting holes and are threadedly connected to the outer shell on the other side of the door panel. The mounting holes on the door panel cooperate with the bolts in the inner shell, and the bolts pass through the mounting holes and are threadedly connected to the outer shell, thus realizing the firm installation of the inner shell and the outer shell on the door panel. This connection method has a simple structure, is easy to install and disassemble, and can ensure the stability of the connection between the lock and the door panel, preventing loosening during long-term use or frequent opening and closing of the door, and ensuring the normal operation of the lock.

[0031] Furthermore, both bolts are provided with hollow tubes on their outer periphery. These hollow tubes are integrally molded with PVC. The integrally molded PVC hollow tubes around the bolts can protect the bolts, preventing them from being worn by direct friction with the door panel or other parts. At the same time, PVC material has good corrosion resistance and insulation properties, making it suitable for the low-temperature environment of cold storage. This prevents the bolts from rusting or being damaged by environmental factors, extending the service life of the bolts and ensuring the stability of the connection.

[0032] Furthermore, a slot is provided on one side of the base, and a protrusion is provided on one side of the latch. The protrusion is located within the slot. The slot on one side of the base cooperates with the protrusion on the side of the latch. When the latch hooks onto the base, the protrusion is located within the slot, which can effectively restrict the position of the latch and prevent the latch from shifting or loosening after the door is closed. This enhances the tightness of the connection between the latch and the base, ensures the locking effect of the door, avoids cold air leakage or safety hazards caused by the latch position shifting and the door not being able to be fully locked, and improves the locking reliability of the lock.

[0033] 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. An escape lock for a single-leaf swing door of a cold storage facility, comprising a door panel (1) and a door frame (2), wherein an outer shell (3) and an inner shell (4) are respectively installed on both sides of the door panel (1), characterized in that: An inner handle (5) is rotatably provided on one side of the inner shell (4) via a pivot. A connecting rod (6) is rotatably connected to one side of the inner handle (5). A locking tongue (7) is rotatably installed on the other side of the connecting rod (6). One end of the locking tongue (7) is rotatably connected to the inner shell (4). A base (8) is provided on one side of the inner shell (4). The base (8) can be hooked by the locking tongue (7). The base (8) is located on one side of the door frame (2). An outer handle (9) is rotatably mounted on one side of the outer shell (3) via a pivot. A guide rod (10) is provided on one side of the outer handle (9). The guide rod (10) extends through the door panel (1) into the inner shell (4). The guide rod (10) is positioned opposite to the inner handle (5) and is used to lift the inner handle (5).

2. The escape lock for a single-leaf swing door of a cold storage facility according to claim 1, characterized in that: A torsion spring (11) is provided on one side of both the inner handle (5) and the outer handle (9), and the torsion spring (11) is provided at the pivot of the corresponding inner handle (5) and the outer handle (9).

3. The escape lock for a single-leaf swing door of a cold storage facility according to claim 1, characterized in that: The outer shell (3) is provided with a lock cylinder (12), and a lock spring (13) is provided on the outer periphery of the lock cylinder (12). By inserting a key into the lock cylinder (12) and then rotating the lock cylinder (12), the lock spring (13) is rotated and locked onto the outer handle (9).

4. The escape lock for a single-leaf swing door of a cold storage facility according to claim 2, characterized in that: A spring (14) is provided on one side of the inner handle (5), and the other side of the spring (14) is connected to the inner shell (4).

5. The escape lock for a single-leaf swing door of a cold storage facility according to claim 1, characterized in that: The door panel (1) is provided with two mounting holes (15), and the inner shell (4) is provided with two bolts (16). The two bolts (16) are movably connected through the corresponding mounting holes (15) and threadedly connected to the outer shell (3) on the other side of the door panel (1).

6. The escape lock for a single-leaf swing door of a cold storage facility according to claim 1, characterized in that: Hollow tubes (17) are provided on the outer periphery of both bolts (16), and the hollow tubes (17) are integrally formed by PVC.

7. The escape lock for a single-leaf swing door of a cold storage facility according to claim 1, characterized in that: The base (8) has a slot (18) on one side, and the latch (7) has a protrusion (19) on one side, which is located in the slot (18).

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