A deformation-resistant security door

By strengthening the deformation-resistant door frame and the split door design, combined with the linkage lock handle and reinforced rib frame, the problem of insufficient ventilation and privacy protection in traditional security doors is solved, realizing a multi-level security door with flexible ventilation and privacy protection.

CN224413476UActive Publication Date: 2026-06-26ZHEJIANG JUDING IND & TRADE CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG JUDING IND & TRADE CO LTD
Filing Date
2025-07-22
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Traditional security doors have limitations in ventilation and privacy protection, cannot flexibly meet user needs, and are not secure enough.

Method used

It adopts a reinforced deformation-resistant door frame and a split design for center-opening and bottom-opening doors, combined with a linkage lock handle and a reinforced rib frame, to achieve multi-level opening and locking of the door, and has flexible ventilation and privacy protection functions.

Benefits of technology

It achieves flexible adjustment of ventilation volume while ensuring safety, meeting the diverse ventilation needs of users, and at the same time improving privacy protection and the overall strength of the door.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The utility model provides a kind of anti-deformation security door belongs to security door field.It solves the security door on current market in function and structural design There are many limitations, it is difficult to meet the diversified needs of users on security, practicality and privacy protection problem.This anti-deformation security door, including reinforcing anti-deformation door frame, characterized in that, the inner end hinged connection of reinforcing anti-deformation door frame has steel core security door body, the inner end of steel core security door body is equipped with middle part open storehouse, the middle part of the middle part open storehouse is fixedly connected with auxiliary partition strip frame, the rear end of auxiliary partition strip frame is equipped with inner recessed square groove.It is characterized in that the anti-deformation security door of the utility model is formed by reinforcing anti-deformation door frame and the reinforcing rib frame of upper and lower two ends, which forms a high-strength three-dimensional support structure, the split design of middle open door and lower open door, the maximum ventilation area is realized by double-door linkage, which meets the demand of rapid ventilation and flexible performance.
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Description

Technical Field

[0001] This utility model belongs to the field of security doors and relates to a deformation-resistant security door. Background Technology

[0002] A security door is a type of door with anti-theft functions, primarily used to protect the security of spaces such as homes and offices, preventing illegal intrusion. The full name of a security door is "anti-theft security door." It is designed and manufactured according to relevant national standards, possessing strong resistance to vandalism and able to resist opening by external force for a certain period. It also incorporates additional functions such as fire resistance, sound insulation, and heat insulation. Its core functionality is achieved through structural design such as high-strength door frames, anti-theft locks, and reinforced panels, using materials such as steel and alloys to ensure security at the entrance.

[0003] Current security doors on the market have many limitations in terms of function and structural design, making it difficult to meet users' diverse needs for security, practicality and privacy protection. Traditional security doors mostly adopt an integral door panel design with a single opening mode, supporting only the entire door to be fully opened or fully closed. In daily use, if users need ventilation, they either have to completely open the door, which poses a security risk, or they cannot meet their flexible ventilation needs. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a more flexible and deformation-resistant security door.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A deformation-resistant security door includes a reinforced deformation-resistant door frame, characterized in that a steel core security door body is hinged to the inner end of the reinforced deformation-resistant door frame, a central opening is provided at the inner end of the steel core security door body, an auxiliary partition frame is fixedly connected to the center of the central opening, an inwardly recessed square groove is provided at the rear end of the auxiliary partition frame, a center door and a bottom door are hinged to the upper and lower sides of the rear end of the central opening, a first linkage locking handle is installed at the rear end of the center door, a second locking handle is installed at the rear end of the bottom door, an auxiliary frame position is provided between the center door and the bottom door, the auxiliary frame position is located in the corresponding inwardly recessed square groove, a linkage downward pressing vertical rod located inside the center door is installed at the lower end of the first linkage locking handle, a protruding column is fixedly connected to the lower end of the linkage downward pressing vertical rod, and a grooved column is fixedly connected to the upper end of the bottom door.

[0007] In the aforementioned anti-deformation security door, the area of ​​the center-opening door is larger than the area of ​​the bottom-opening door, and the center-opening door and the bottom-opening door are respectively located on the upper and lower sides of the auxiliary partition frame.

[0008] In the aforementioned anti-deformation security door, the upper and lower ends of the reinforced anti-deformation door frame are symmetrically and fixedly connected with reinforcing rib frames, and the side end of the steel core security door body is equipped with a main anti-theft lock handle.

[0009] In the aforementioned anti-deformation security door, the main anti-theft lock handle and the reinforced anti-deformation door frame are interlocked, and the protruding column and the grooved column cooperate with each other vertically within the auxiliary frame position.

[0010] In the aforementioned anti-deformation security door, the right inner wall of the central opening is provided with two side inner locking grooves, and the two side inner locking grooves are respectively engaged with the corresponding first linkage locking handle and auxiliary partition frame.

[0011] In the aforementioned anti-deformation security door, a ventilated stainless steel mesh layer is fixedly connected to the inner end of the central opening, and the ventilated stainless steel mesh layer corresponds to the central opening door and the bottom opening door.

[0012] In the aforementioned anti-deformation security door, a sealing strip is fixedly connected to the outer wall of the steel core security door body, and the sealing strip and the inner wall of the reinforced anti-deformation door frame are in contact with each other.

[0013] Compared with existing technologies, this anti-deformation security door features a reinforced anti-deformation door frame with reinforcing ribs at both ends, forming a high-strength three-dimensional support structure. The separate design of the center-opening and bottom-opening doors allows the bottom door to be opened independently via the second locking handle, exposing only a portion of the ventilated stainless steel mesh surface. This ensures air circulation while preventing outsiders from directly viewing the interior, effectively enhancing privacy. When large-area ventilation is needed, simultaneously rotating the first and second locking handles causes the first locking handle to lower the linkage downward rod, disengaging the protruding column from the recessed column's limit and releasing the linkage constraint between the center-opening and bottom-opening doors. At this point, both doors can be opened separately around the hinge point, fully exposing the ventilated stainless steel mesh surface. The linkage of the two doors maximizes the ventilation area, meeting rapid air exchange needs and offering flexible performance. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of this anti-deformation security door;

[0015] Figure 2 This is a schematic diagram of the central opening structure of this anti-deformation security door;

[0016] Figure 3 This is a schematic diagram of the central opening structure of this anti-deformation security door from another perspective;

[0017] Figure 4 This is a magnified view of a partial section of the linkage downward pressing vertical rod of this anti-deformation security door.

[0018] In the diagram: 1. Reinforced anti-deformation door frame; 2. Steel core security door body; 3. Reinforced rib frame; 4. Central opening; 5. Center-opening door; 6. Bottom-opening door; 7. Ventilated stainless steel mesh surface layer; 8. Auxiliary partition frame; 9. First linkage lock handle; 10. Second lock handle; 11. Protruding post; 12. Grooved post; 13. Auxiliary frame position; 14. Main security lock handle; 15. Concave square groove; 16. Linkage downward pressing vertical bar; 17. Side inner lock groove; 18. Sealing outer strip. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] It should be noted that when a component is said to be "mounted on" another component, it can be directly mounted on the other component or may be interspersed with a component. When a component is said to be "set on" another component, it can be directly set on the other component or may be interspersed with a component. When a component is said to be "fixed to" another component, it can be directly fixed to the other component or may be interspersed with a component.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] like Figure 1As shown in Figure 4, this anti-deformation security door includes a reinforced anti-deformation door frame 1. A steel core security door body 2 is hinged to the inner end of the reinforced anti-deformation door frame 1. A central opening 4 is provided at the inner end of the steel core security door body 2. An auxiliary partition frame 8 is fixedly connected to the center of the central opening 4. A concave square groove 15 is provided at the rear end of the auxiliary partition frame 8. A center door 5 and a bottom door 6 are hinged to the upper and lower sides of the rear end of the central opening 4. The rear end of the center door 5 is equipped with... The door has a first linkage locking handle 9, and a second locking handle 10 is installed at the rear end of the bottom opening door 6. An auxiliary frame position 13 is provided between the middle opening door 5 and the bottom opening door 6. The auxiliary frame position 13 is located in the corresponding concave square groove 15. A linkage downward pressing vertical rod 16 located in the middle opening door 5 is installed at the lower end of the first linkage locking handle 9. A protruding column 11 is fixedly connected to the lower end of the linkage downward pressing vertical rod 16. A grooved column 12 is fixedly connected to the upper end of the bottom opening door 6.

[0023] In the aforementioned anti-deformation security door, the area of ​​the center-opening door 5 is larger than the area of ​​the bottom-opening door 6, and the center-opening door 5 and the bottom-opening door 6 are respectively located on the upper and lower sides of the auxiliary partition frame 8.

[0024] In the aforementioned anti-deformation security door, the upper and lower ends of the reinforced anti-deformation door frame 1 are symmetrically and fixedly connected with reinforcing rib frame 3, and the side end of the steel core security door body 2 is equipped with a main anti-theft lock handle 14.

[0025] In the aforementioned anti-deformation security door, the main anti-theft lock handle 14 and the reinforced anti-deformation door frame 1 are interlocked, and the protruding column 11 and the grooved column 12 cooperate with each other vertically within the auxiliary frame position 13.

[0026] In the aforementioned anti-deformation security door, the right inner wall of the central opening 4 is provided with two side inner locking grooves 17, and the two side inner locking grooves 17 are respectively engaged with the corresponding first linkage locking handle 9 and auxiliary partition frame 8.

[0027] In the aforementioned anti-deformation security door, the inner end of the central opening 4 is fixedly connected to a ventilated stainless steel mesh layer 7, and the ventilated stainless steel mesh layer 7 corresponds to the central opening door 5 and the bottom opening door 6.

[0028] In the aforementioned anti-deformation security door, a sealing outer strip 18 is fixedly connected to the outer wall of the steel core security door body 2, and the sealing outer strip 18 and the inner wall of the reinforced anti-deformation door frame 1 are in contact with each other.

[0029] When the security door needs to be closed, this solution involves pushing the steel core security door body 2 to fit against the reinforced anti-deformation door frame 1. The sealing strip 18 on the outer wall of the steel core security door body 2 makes tight contact with the inner wall of the reinforced anti-deformation door frame 1, providing sealing, sound insulation, and windproofing. Turning the main anti-theft lock handle 14 engages it with the reinforced anti-deformation door frame 1, locking the steel core security door body 2 as a whole, thus achieving basic anti-theft functionality. The reinforcing ribs 3 at the top and bottom of the reinforced anti-deformation door frame 1 enhance the overall strength of the door frame, resisting deformation caused by external impacts. If only opening is required... To maintain privacy, open the lower door 6 and turn the second locking handle 10 to release the lock between the lower door 6 and the inner locking groove 17 on the right inner wall of the middle compartment 4. Since the middle door 5 is still locked by the first linkage locking handle 9 and the inner locking groove 17, the lower door 6 can be opened alone. After the lower door 6 is opened, the ventilation stainless steel mesh layer 7 inside the middle compartment 4 is partially exposed, achieving limited ventilation with privacy. When it is necessary to fully open the middle door 5 and the lower door 6 to achieve large-area ventilation, turn the first linkage locking handle 9. The closing handle 9 moves the linkage downward pressing vertical rod 16 downward, and the protruding column 11 at the lower end of the linkage downward pressing vertical rod 16 descends accordingly. At the same time, the second locking handle 10 is rotated to release the lock of the lower opening door 6. At this time, the protruding column 11 and the grooved column 12 at the upper end of the lower opening door 6 are no longer constrained by the auxiliary frame position 13. The middle opening door 5 and the lower opening door 6 rotate and open around the hinge point at the rear end of the middle opening compartment 4. After the middle opening door 5 and the lower opening door 6 are fully opened, the ventilated steel mesh surface layer 7 is fully exposed, achieving full ventilation, and the user can pass through the ventilated steel mesh. The mesh layer 7 observes the outside of the door to ensure safety. The auxiliary partition frame 8 is fixed in the middle of the central opening 4. The concave square groove 15 on it is used to accommodate the auxiliary frame position 13. The auxiliary frame position 13 plays a limiting and guiding role for the center opening door 5 and the bottom opening door 6, ensuring the stability of the door when it is opened and closed. At the same time, the locking structure of the side inner locking groove 17 with the first linkage locking handle 9 and the auxiliary partition frame 8, as well as the locking structure of the main anti-theft locking handle 14 with the reinforced anti-deformation door frame 1, together constitute a multi-level anti-theft system to improve the security performance of the door.

[0030] The technical features of the above-described embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0031] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present utility model and are not intended to limit the present utility model. Any appropriate changes and variations made to the above embodiments within the scope of the essential spirit of the present utility model shall fall within the scope of protection claimed by the present utility model.

Claims

1. A deformation-resistant security door, comprising a reinforced deformation-resistant door frame, characterized in that, The inner end of the reinforced anti-deformation door frame is hinged to a steel core anti-theft door body. The inner end of the steel core anti-theft door body has a central opening. An auxiliary partition frame is fixedly connected to the center of the central opening. The rear end of the auxiliary partition frame has a concave square groove. The upper and lower sides of the rear end of the central opening are hinged to a center door and a bottom door. The rear end of the center door is equipped with a first linkage lock handle, and the rear end of the bottom door is equipped with a second lock handle. An auxiliary frame position is provided between the center door and the bottom door. The auxiliary frame position is located in the corresponding concave square groove. The lower end of the first linkage lock handle is equipped with a linkage downward pressing vertical rod located inside the center door. The lower end of the linkage downward pressing vertical rod is fixedly connected to a protruding column, and the upper end of the bottom door is fixedly connected to a grooved column.

2. The anti-deformation security door according to claim 1, characterized in that, The area of ​​the center-opening door is larger than that of the bottom-opening door, and the center-opening door and the bottom-opening door are respectively located on the upper and lower sides of the auxiliary partition frame.

3. The anti-deformation security door according to claim 2, characterized in that, The upper and lower ends of the reinforced anti-deformation door frame are symmetrically fixed with reinforcing rib frames, and the side end of the steel core anti-theft door is equipped with a main anti-theft lock handle.

4. The anti-deformation security door according to claim 3, characterized in that... The main anti-theft lock handle and the reinforced anti-deformation door frame are interlocked, and the protruding column and the grooved column cooperate with each other vertically within the auxiliary frame.

5. The anti-deformation security door according to claim 4, characterized in that, The right inner wall of the central compartment is provided with two side inner locking grooves, which are respectively engaged with the corresponding first linkage locking handle and auxiliary partition frame.

6. The anti-deformation security door according to claim 5, characterized in that, The inner end of the centrally opened compartment is fixedly connected to a ventilated stainless steel mesh layer, which corresponds to the central and lower opening doors.

7. The anti-deformation security door according to claim 6, characterized in that, The outer wall of the steel core security door is fixedly connected with a sealing strip, and the sealing strip is in contact with the inner wall of the reinforced and deformation-resistant door frame.