Automatic vault door with locking device
By installing a hydraulic rod and a servo motor-driven gear meshing system on the vault door, a secondary fixation of the lock cylinder is achieved, solving the problem of low security in traditional vault doors and providing higher security and emergency opening functions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 东台市万保安全设备有限公司
- Filing Date
- 2025-06-11
- Publication Date
- 2026-05-22
AI Technical Summary
Traditional vault doors lack secondary securing after the bolt head is inserted into the bolt groove, resulting in low security.
An automated vault door with a locking device was designed. A hydraulic rod drives a U-shaped plate to move, causing a second lock head to be inserted into the through hole of the first lock head for fixation. A servo motor drives a gear to mesh with a movable plate to achieve mechanical interlocking and improve security.
This effectively avoids the safety hazard of a single bolt head not being secured after being inserted into the bolt groove, improves the security of the vault door, and enables quick opening of the door in an emergency by turning the handle and the pressure relief valve.
Smart Images

Figure CN224266459U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vault door technology, and in particular to an automated vault door with a locking device. Background Technology
[0002] Vault doors are suitable for storing valuables in places such as banks, villas, and museum warehouses. There are many types of vault doors, such as ordinary steel plate vault doors, emergency vault doors, stainless steel vault doors, and double-leaf stainless steel vault doors.
[0003] Traditional vault doors typically use a single bolt head inserted into a bolt groove without secondary securing of the bolt head, resulting in low security. This necessitates improvement, and to address this issue, we propose an automated vault door with a locking device. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an automated vault door with a locking device that can lock the lock a second time, thereby improving security.
[0005] To achieve the above objectives, the present invention provides the following technical solution:
[0006] An automated vault door with a locking device includes a frame, a door body rotatably connected to the inner side of the frame, an installation chamber located in the middle of the rear side of the door body, movable plates arranged around the inner perimeter of the installation chamber, first lock heads fixedly connected to the outer sides of both ends of the movable plates, the outer walls of the first lock heads slidably connected to the interior of the door body, and through holes provided at the ends of the first lock heads. A drive assembly for moving the movable plates is located in the middle of the installation chamber. A U-shaped groove is formed on the rear side of the frame, and a second lock head is fixedly connected to the front side of the U-shaped groove, with the front end of the second lock head passing through the through hole. A hydraulic rod is installed inside the left end of the frame, and the drive end of the hydraulic rod is fixedly connected to the front left end of the U-shaped plate. A limit rod is fixedly connected to the front right end of the U-shaped plate, with the front end of the limit rod passing through the interior of the frame.
[0007] Furthermore, the drive assembly includes a servo motor fixedly connected to the front side of the inner wall of the mounting cavity, a rotating shaft fixedly connected to the drive end of the servo motor, a gear fixedly connected to the outside of the rotating shaft, a first rack meshing with the upper and lower sides of the front end of the gear, and a second rack meshing with the left and right sides of the rear end of the gear.
[0008] Furthermore, the opposite end of the first rack is fixedly connected to the outside of the movable plates on the left and right sides of the mounting chamber.
[0009] Furthermore, the opposite end of the second rack is fixedly connected to the outside of the movable plates on the upper and lower sides of the mounting chamber.
[0010] Furthermore, a fixing block is provided at each of the four corners of the installation chamber, and a cover plate is provided at the rear end of the inner wall of the installation chamber, with the four corners of the cover plate fixedly connected to the rear end of the fixing block.
[0011] Furthermore, a rotating handle is rotatably connected to the middle of the cover plate, and the front end of the rotating handle is embedded in the middle of the rear end of the rotating shaft.
[0012] Furthermore, a pressure relief valve for communicating with a hydraulic rod is installed on the rear left side of the frame.
[0013] Furthermore, a baffle is fixedly connected to the rear side of the door, and a password box is installed on the front side of the door.
[0014] This utility model has the following beneficial effects:
[0015] In this invention, a hydraulic rod drives a U-shaped plate to move, thereby causing the second lock head to insert into the through hole at the end of the first lock head and fix it in place. This avoids the situation where a single bolt head is inserted into the bolt groove without secondary fixation of the bolt head, which would result in low security.
[0016] In this invention, the rotating handle and pressure relief valve allow the vault door to be opened in case of accidental confinement inside the vault, thus preventing accidents. Attached Figure Description
[0017] Figure 1 This is a front view of an automated vault door with a locking device proposed in this utility model;
[0018] Figure 2 This is a rear view of an automated vault door with a locking device proposed in this utility model;
[0019] Figure 3 This is a schematic diagram of a U-shaped plate for an automated vault door with a locking device proposed in this utility model;
[0020] Figure 4 This is a schematic diagram of an automated vault door with a locking device proposed in this utility model;
[0021] Figure 5 This is a schematic diagram of the gears of an automated vault door with a locking device proposed in this utility model.
[0022] Legend:
[0023] 1. Frame; 2. Door body; 3. Installation chamber; 4. Movable plate; 5. First lock cylinder; 6. Through hole; 7. U-shaped groove; 8. U-shaped plate; 9. Second lock cylinder; 10. Hydraulic rod; 11. Limit rod; 12. Pressure relief valve; 13. Servo motor; 14. Rotating shaft; 15. Gear; 16. First rack; 17. Second rack; 18. Cover plate; 19. Rotating handle; 20. Baffle; 21. Fixing block; 22. Combination key box. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Reference Figure 2 , Figure 4 and Figure 5 This utility model provides an embodiment of an automated vault door with a locking device, comprising a frame 1, a door body 2 rotatably connected to the inner side of the frame 1, an installation chamber 3 located in the middle of the rear side of the door body 2, movable plates 4 arranged around the inner perimeter of the installation chamber 3, and first lock heads 5 fixedly connected to the outer sides of both ends of the movable plates 4. The outer wall of the first lock head 5 is slidably connected to the inside of the door body 2, and a through hole 6 is provided at the end of the first lock head 5. A servo motor 13 is fixedly connected to the front side of the inner wall of the installation chamber 3, a rotating shaft 14 is fixedly connected to the drive end of the servo motor 13, and a gear 15 is fixedly connected to the outside of the rotating shaft 14. The front end of the gear 15 is meshed with first teeth on both the upper and lower sides. The rear ends of the first rack 16 and gear 15 are both meshed with second racks 17. The opposite end of the first rack 16 is fixedly connected to the outside of the movable plates 4 on the left and right sides of the mounting chamber 3. The opposite end of the second rack 17 is fixedly connected to the outside of the movable plates 4 on the upper and lower sides of the mounting chamber 3. Fixing blocks 21 are provided at the four corners of the interior of the mounting chamber 3. A cover plate 18 is provided at the rear end of the inner wall of the mounting chamber 3. The four corners of the cover plate 18 are fixedly connected to the rear end of the fixing blocks 21. A rotating handle 19 is rotatably connected to the middle of the cover plate 18. The front end of the rotating handle 19 is embedded in the middle of the rear end of the rotating shaft 14. A baffle 20 is fixedly connected to the rear side of the door body 2. A password box 22 is installed on the front side of the door body 2.
[0026] When the vault door is not locked, the door body 2 is connected to the frame 1 by hinges and can be rotated to open. At this time, the movable plate 4 and the first lock head 5 are retracted into the door body 2 and do not contact the frame 1. After the vault door is closed, the user enters the correct command through the keypad 22, and the servo motor 13 starts, driving the rotating shaft 14 and gear 15 to rotate. The gear 15 simultaneously meshes with the first rack 16 and the second rack 17. The first rack 16 moves left and right, and the second rack 17 moves up and down, pushing the four movable plates 4 to move around the door body 2. The movable plates 4 drive the first lock head 5 to insert into the reserved lock hole in the frame 1, forming a mechanical interlock.
[0027] Reference Figures 1-3 A U-shaped groove 7 is provided on the rear side of the frame 1. A second lock head 9 is fixedly connected to the front side of the U-shaped groove 7. The front end of the second lock head 9 passes through the inside of the through hole 6. A hydraulic rod 10 is installed inside the left end of the frame 1. The driving end of the hydraulic rod 10 is fixedly connected to the front left end of the U-shaped plate 8. A limit rod 11 is fixedly connected to the front right end of the U-shaped plate 8. The front end of the limit rod 11 passes through the inside of the frame 1. A pressure relief valve 12 for communicating with the hydraulic rod 10 is installed on the rear left end of the frame 1.
[0028] After the first lock head 5 is in place, its end through hole 6 aligns with the second lock head 9 inside the frame 1. The hydraulic rod 10 retracts, pulling the U-shaped plate 8 and the second lock head 9 inward along the U-shaped groove 7, so that the second lock head 9 is inserted into the through hole 6. The hydraulic system maintains pressure to ensure that the locked state cannot be loosened in the reverse direction. The hydraulic rod 10 drives the U-shaped plate 8 to move, thereby driving the second lock head 9 to be inserted into the through hole 6 at the end of the first lock head 5 and fixing it, thus avoiding the situation where a single bolt head is inserted into the bolt groove without secondary fixing of the bolt head, resulting in low security.
[0029] Working principle: When the vault door is closed, the servo motor 13 starts, driving the gear 15 to rotate via the shaft 14. The rotating gear 15 drives the outer meshing first rack 16 and second rack 17 to move, thereby pushing the movable plate 4 to move towards the side wall of the mounting chamber 3 and to press against the side wall. During this process, the movable plate 4 drives the first lock head 5 to move and insert into the inside of the frame 1 to complete the locking. Subsequently, the hydraulic rod 10 drives the U-shaped plate 8 into the U-shaped groove 7, thereby driving the second lock head 9 to insert into the through hole 6 at the end of the first lock head 5 for reinforcement and improved security. The rotating handle 19 can drive the gear 15 to rotate inside the vault to open the frame 1. The pressure relief valve 12 is used for manual pressure relief of the hydraulic rod 10 to prevent personnel from being trapped inside the vault.
[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An automated vault door with a locking device, characterized in that, The enclosure includes a frame (1), with a door (2) rotatably connected to the inner side of the frame (1). A mounting chamber (3) is located in the middle of the rear side of the door (2). Movable plates (4) are arranged around the inner perimeter of the mounting chamber (3). First lock heads (5) are fixedly connected to the outer ends of both ends of the movable plates (4). The outer walls of the first lock heads (5) are slidably connected to the interior of the door (2). A through hole (6) is provided at the end of the first lock head (5). A mechanism for moving the movable plates (4) is located in the middle of the mounting chamber (3). The moving drive assembly has a U-shaped groove (7) on the rear side of the frame (1), and a second lock head (9) is fixedly connected to the front side of the U-shaped groove (7). The front end of the second lock head (9) passes through the inside of the through hole (6). A hydraulic rod (10) is installed inside the left end of the frame (1). The driving end of the hydraulic rod (10) is fixedly connected to the front left end of the U-shaped plate (8). A limit rod (11) is fixedly connected to the front right end of the U-shaped plate (8). The front end of the limit rod (11) passes through the inside of the frame (1).
2. An automated vault door with a locking device according to claim 1, characterized in that: The drive assembly includes a servo motor (13) fixedly connected to the front side of the inner wall of the mounting chamber (3). The drive end of the servo motor (13) is fixedly connected to a rotating shaft (14). A gear (15) is fixedly connected to the outside of the rotating shaft (14). A first rack (16) is meshed on both the upper and lower sides of the front end of the gear (15). A second rack (17) is meshed on both the left and right sides of the rear end of the gear (15).
3. An automated vault door with a locking device according to claim 2, characterized in that: The opposite end of the first rack (16) is fixedly connected to the outside of the movable plates (4) on the left and right sides of the mounting chamber (3).
4. An automated vault door with a locking device according to claim 2, characterized in that: The opposite end of the second rack (17) is fixedly connected to the outside of the movable plates (4) on the upper and lower sides of the mounting chamber (3).
5. An automated vault door with a locking device according to claim 1, characterized in that: The four corners of the installation chamber (3) are provided with fixing blocks (21), and the rear end of the inner wall of the installation chamber (3) is provided with a cover plate (18), and the four corners of the cover plate (18) are fixedly connected to the rear end of the fixing block (21).
6. An automated vault door with a locking device according to claim 5, characterized in that: The cover plate (18) is rotatably connected to a rotating handle (19) in the middle, and the front end of the rotating handle (19) is embedded in the middle of the rear end of the rotating shaft (14).
7. An automated vault door with a locking device according to claim 1, characterized in that: A pressure relief valve (12) for communicating with the hydraulic rod (10) is installed on the rear left side of the frame (1).
8. An automated vault door with a locking device according to claim 1, characterized in that: A baffle (20) is fixedly connected to the rear side of the door (2), and a password box (22) is installed on the front side of the door (2).