Automatic door opening mechanism for filing cabinet

By designing an automatic door opening mechanism for the filing cabinet with a rotating shaft, a limiting structure, and a sealing structure, the problem of manual opening in case of motor failure was solved, achieving efficient file retrieval and cabinet door sealing, and improving the reliability and sealing performance of the filing cabinet.

CN224396321UActive Publication Date: 2026-06-23SHANGHAI SHANDUN ELECTRONIC TECH CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI SHANDUN ELECTRONIC TECH CO LTD
Filing Date
2025-07-01
Publication Date
2026-06-23

Smart Images

  • Figure CN224396321U_ABST
    Figure CN224396321U_ABST
Patent Text Reader

Abstract

The utility model discloses a file cabinet automatic door opening mechanism belongs to file cabinet technical field, it includes file cabinet frame, the top of file cabinet frame is fixedly connected with door drive, the left side rotation is connected with the pivot no.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of filing cabinet technology, specifically to an automatic opening mechanism for filing cabinets. Background Technology

[0002] Filing cabinets belong to the office furniture category; they are cabinets used to store archives and are a relatively traditional form of storage. They typically refer to covered boxes and cabinets with doors, usually made of wood or metal. Some are even modular, consisting of separate boxes that can be stacked into cabinets. Their advantages include effective dust prevention and protection against harmful substances, as well as ease of movement. Automatic door opening mechanisms in filing cabinets open or close the doors. Current automatic door opening mechanisms mainly consist of a combination of motors, drive belts, and telescopic rods to achieve automatic opening or closing. However, most automatic door opening mechanisms lack auxiliary functions. When the motor malfunctions, it is difficult to manually open the cabinet door. This not only seriously affects the normal operating efficiency of the filing cabinet but may also lead to the inability to retrieve archives in time in emergencies, causing potential business interruption or information loss risks. Utility Model Content

[0003] The purpose of this invention is to provide an automatic door opening mechanism for filing cabinets to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an automatic door opening mechanism for a filing cabinet, including a filing cabinet frame, a door opening driver fixedly connected to the top of the filing cabinet frame, a rotating shaft one rotatably connected to the left side above the door opening driver, a rotating shaft two rotatably connected to the right side above the door opening driver, a cabinet door one rotatably connected to the outside of the rotating shaft one, and a cabinet door two rotatably connected to the outside of the rotating shaft two. The cabinet door two has a cross groove inside, and a sealing structure is provided inside the cabinet door two. The sealing structure is slidably connected within the cross groove and engages with the cabinet door one. A circular groove is provided outside the rotating shaft one, and a limiting structure is slidably connected inside the cabinet door one. The limiting structure engages with the rotating shaft one. The limiting structure includes a limiting block, a support plate, a limiting post, and a spring. A moving rod is fixedly connected above the limiting block, a protrusion is fixedly connected to the top of the moving rod, and a locking plate is slidably connected to the outside of the limiting post.

[0005] As a further preferred embodiment of this technical solution, cabinet door one overlaps with cabinet door two, and the sealing structure includes an expansion joint, which is fixedly connected inside cabinet door two.

[0006] As a further preferred embodiment of this technical solution, one end of the telescopic device is connected to a cross plate, and a sealing rubber plate is fixedly connected to one side of the cross plate.

[0007] As a further preferred embodiment of this technical solution, the cross plate is slidably connected in the cross groove, and the sealing rubber plate is snapped into the cabinet door.

[0008] As a further preferred embodiment of this technical solution, the limiting block is engaged within the limiting structure, the moving rod is slidably connected within the cabinet door, and the card plate is slidably connected within the cabinet door.

[0009] As a further preferred embodiment of this technical solution, the limiting post is fixedly connected inside the support plate, the spring is sleeved outside the limiting post, the clamping plate is connected inside the support plate through the limiting post, and the protrusion is slidably connected inside the cabinet door.

[0010] This utility model provides an automatic door opening mechanism for filing cabinets, which has the following beneficial effects:

[0011] (1) This utility model sets up cabinet door one, cabinet door two, rotating shaft one, rotating shaft two and limiting structure to apply a pushing force to the card plate. When the card plate slides on the surface of the limiting post, it will drive the spring to deform. Then, the protrusion drives the limiting block to move inside cabinet door one. When the protrusion slides to the end, the card plate is released and the card plate will be reset by the action of the limiting post. After the card plate is reset, it will overlap under the protrusion, and the limiting block will be in the area of ​​the circular groove. When cabinet door one and cabinet door two are manually opened, the automatic door opening mechanism enables cabinet door one and cabinet door two to realize the function of manual opening through the cooperation between rotating shaft one, limiting structure and circular groove. In daily use, even if there is a brief power outage or motor jamming, the user can quickly switch to manual mode to continue to access the files, avoiding work stoppage. This directly translates into higher work efficiency and a smoother work experience.

[0012] (2) By setting a sealing structure, when cabinet door one and cabinet door two are closed, the cross plate is pushed by the telescopic device, and the cross plate will move in the cross groove. The sealing rubber plate will be engaged with one side of cabinet door one as the cross plate moves, thereby playing a certain sealing role for cabinet door one and cabinet door two, and avoiding the phenomenon of gaps when cabinet door one and cabinet door two are closed. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a three-dimensional cross-sectional schematic diagram of the sealing structure of this utility model;

[0015] Figure 3 This is a three-dimensional cross-sectional structural diagram of the cabinet door of this utility model;

[0016] Figure 4 For the present utility model Figure 1Enlarged structural diagram at point A in the middle.

[0017] In the diagram: 1. Filing cabinet rack; 2. Door opening actuator; 3. Rotary shaft one; 4. Rotary shaft two; 5. Cabinet door one; 6. Cabinet door two; 7. Sealing structure; 701. Telescopic device; 702. Cross plate; 703. Sealing rubber plate; 8. Limiting structure; 801. Limiting block; 802. Moving rod; 803. Protrusion; 804. Support plate; 805. Card plate; 806. Limiting post; 807. Spring; 9. Circular groove; 10. Cross groove. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0019] This utility model provides a technical solution: such as Figure 1 and Figure 4 As shown, in this embodiment, the automatic door opening mechanism of the filing cabinet includes a filing cabinet frame 1. A door opening driver 2 is fixedly connected to the top of the filing cabinet frame 1. A rotating shaft 3 is rotatably connected to the left side above the door opening driver 2, and a rotating shaft 4 is rotatably connected to the right side above the door opening driver 2. A cabinet door 5 is rotatably connected to the outside of the rotating shaft 3, and a cabinet door 6 is rotatably connected to the outside of the rotating shaft 4. A cross groove 10 is provided inside the cabinet door 6, and a sealing structure 7 is provided inside the cabinet door 6. The sealing structure 7 is slidably connected to... Within the cross groove 10, the sealing structure 7 engages with the cabinet door 5. A circular groove 9 is provided on the outside of the rotating shaft 3. A limiting structure 8 is slidably connected inside the cabinet door 5. The limiting structure 8 engages with the rotating shaft 3. The limiting structure 8 includes a limiting block 801, a support plate 804, a limiting post 806, and a spring 807. A moving rod 802 is fixedly connected above the limiting block 801. A protrusion 803 is fixedly connected to the top of the moving rod 802. A locking plate 805 is slidably connected to the outside of the limiting post 806.

[0020] like Figure 1 and Figure 2 As shown, cabinet door 5 overlaps with cabinet door 6. The sealing structure 7 includes an expansion joint 701, which is fixedly connected inside cabinet door 6. One end of the expansion joint 701 is connected to a cross plate 702, and a sealing rubber plate 703 is fixedly connected to one side of the cross plate 702. The cross plate 702 is slidably connected in the cross groove 10, and the sealing rubber plate 703 is engaged with cabinet door 5.

[0021] By setting the cross groove 10, the cross plate 702 is pushed by the telescopic device 701, and the cross plate 702 will move within the cross groove 10. This allows the cross groove 10 to guide the movement of the cross plate 702, preventing the cross plate 702 from shifting its position during movement and ensuring the stability of the movement of the cross plate 702.

[0022] likeFigure 3 and Figure 4 As shown, the limiting block 801 is snapped into the limiting structure 8, the moving rod 802 is slidably connected to the cabinet door 5, the locking plate 805 is slidably connected to the cabinet door 5, the limiting post 806 is fixedly connected to the support plate 804, the spring 807 is sleeved on the limiting post 806, the locking plate 805 is connected to the support plate 804 through the limiting post 806, and the protrusion 803 is slidably connected to the cabinet door 5.

[0023] By setting spring 807, a pushing force is applied to the clamping plate 805. When the clamping plate 805 slides on the surface of the limiting post 806, it will cause the spring 807 to deform, so that the spring 807 plays a certain supporting role in the movement of the clamping plate 805. When the clamping plate 805 loses resistance, it will be reset by the spring 807, so as to prevent the clamping plate 805 from tilting when moving.

[0024] This utility model provides an automatic door opening mechanism for filing cabinets, the specific working principle of which is as follows:

[0025] When the automatic door opening mechanism is difficult to use, a pushing force can be applied to the plate 805. When the plate 805 slides on the surface of the limiting post 806, it will cause the spring 807 to deform. Then, through the protrusion 803, the limiting block 801 will move inside the cabinet door 5. When the protrusion 803 slides to the end, the plate 805 is released. The plate 805 will be reset by the action of the limiting post 806. After being reset, the plate 805 will overlap under the protrusion 803, and the limiting block 801 will be in the area of ​​the circular groove 9. Then, the cabinet door 5 and the cabinet door 6 can be manually opened.

[0026] When cabinet door 5 and cabinet door 6 are closed, the expansion joint 701 applies a pushing force to the cross plate 702, and the cross plate 702 moves within the cross groove 10. The sealing rubber plate 703 engages with one side of cabinet door 5 as the cross plate 702 moves.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic door opening mechanism for a filing cabinet, comprising a filing cabinet frame (1), characterized in that: A door opening actuator (2) is fixedly connected to the top of the filing cabinet (1). A rotating shaft (3) is rotatably connected to the left side above the door opening actuator (2). A rotating shaft (4) is rotatably connected to the right side above the door opening actuator (2). A cabinet door (5) is rotatably connected to the outside of the rotating shaft (3). A cabinet door (6) is rotatably connected to the outside of the rotating shaft (4). A cross groove (10) is provided inside the cabinet door (6). A sealing structure (7) is provided inside the cabinet door (6). The sealing structure (7) is slidably connected in the cross groove (10). The rotating shaft (3) is provided with a circular groove (9) and is engaged with the cabinet door (5). The cabinet door (5) is slidably connected with a limiting structure (8). The limiting structure (8) is engaged with the rotating shaft (3). The limiting structure (8) includes a limiting block (801), a support plate (804), a limiting post (806), and a spring (807). A moving rod (802) is fixedly connected above the limiting block (801). A protrusion (803) is fixedly connected to the top of the moving rod (802). A card plate (805) is slidably connected to the outside of the limiting post (806).

2. The automatic door opening mechanism for the filing cabinet according to claim 1, characterized in that: The cabinet door one (5) overlaps with the cabinet door two (6), and the sealing structure (7) includes an expansion joint (701), which is fixedly connected inside the cabinet door two (6).

3. The automatic door opening mechanism for the filing cabinet according to claim 2, characterized in that: One end of the expansion joint (701) is connected to a cross plate (702), and a sealing rubber plate (703) is fixedly connected to one side of the cross plate (702).

4. The automatic door opening mechanism for the filing cabinet according to claim 3, characterized in that: The cross plate (702) is slidably connected in the cross groove (10), and the sealing rubber plate (703) is engaged with the cabinet door (5).

5. The automatic door opening mechanism for the filing cabinet according to claim 1, characterized in that: The limiting block (801) is engaged in the limiting structure (8), the moving rod (802) is slidably connected in the cabinet door (5), and the card plate (805) is slidably connected in the cabinet door (5).

6. The automatic door opening mechanism for the filing cabinet according to claim 5, characterized in that: The limiting post (806) is fixedly connected inside the support plate (804), the spring (807) is sleeved outside the limiting post (806), the card plate (805) is connected inside the support plate (804) through the limiting post (806), and the protrusion (803) is slidably connected inside the cabinet door (5).