Anti-pinch safety edge structure of double-leaf steel structure civil air defense door

By installing a protective structure on the air-raid shelter door, including an inner groove and a compensation end, the problem of hand pinching in the air-raid shelter door is solved, achieving a combination of safety and smooth closing.

CN223794103UActive Publication Date: 2026-01-13HANGZHOU HONGSHUN CIVIL AIR DEFENSE EQUIP CO LTD
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Patent Information

Application Number
CN202520205582.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-10
Publication Date
2026-01-13
Estimated Expiration
2035-02-10

AI Technical Summary

Technical Problem

Existing double-leaf air-raid shelter doors pose a safety hazard of pinching hands when closed, especially when the door leaves are closed, which can cause serious injury.

Method used

A protective structure is installed on the door leaf, including an inner groove and a compensation end, forming an anti-pinch groove. A compensation end and an avoidance groove are installed at the connection between the door leaf and the door frame. The curved surface avoids interference and ensures that the door leaf closes smoothly.

Benefits of technology

It effectively avoids hand-pinching accidents, improves safety, and ensures that the door closes smoothly without affecting normal use.

✦ Generated by Eureka AI based on patent content.

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    Figure CN223794103U_ABST
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Abstract

The utility model discloses an anti-pinch safety edge structure of a double-leaf steel structure civil air defense door. The anti-pinch safety edge structure comprises a door frame and a door leaf movably installed on the door frame. The door is characterized by further comprising a protective structure which is arranged on the door leaf and used for preventing hands from being pinched. The protection structure comprises empty grooves which are formed in the door leaves and located on the inner sides of the door leaves, and after the two door leaves are folded, an anti-pinch empty groove is formed between the two door leaves. Through the arrangement of the protection structure, when the door leaf is closed, the hand clamping accident is avoided, the safety protection effect is achieved, and the use safety is improved.
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Description

Technical Field

[0001] This utility model relates to a double-leaf steel structure air defense door, specifically a double-leaf steel structure air defense door with an anti-pinch safety edge structure. Background Technology

[0002] Existing underground civil defense parking garages and shopping malls (which serve as air-raid shelters during wartime) typically have double-leaf protective civil defense doors at their entrances and connecting passages. These doors, due to their weight, require significant force to close, creating a hand-pinching safety hazard. If a user's hand is positioned near the side edge of the door when it closes, the edge can easily trap their hand when the doors are closed. Furthermore, the weight of the doors themselves can cause severe injury to the user's hand in such an accident. Therefore, this paper proposes a hand-pinching safety edge structure for double-leaf steel-structured civil defense doors. Utility Model Content

[0003] The purpose of this utility model is to solve the above problems by proposing an anti-pinch safety edge structure for a double-leaf steel structure air defense door.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a safety edge structure for preventing hand pinching in a double-leaf steel structure air-raid shelter door, including a door frame and door leaves movably installed on the door frame; characterized in that it also includes a protective structure for preventing hand pinching on the door leaves; the protective structure includes a slot on the door leaves and located on the inner side of the door leaves, forming a hand pinching slot between the two door leaves after the two door leaves are closed.

[0005] More preferably, the protective structure further includes a compensation end disposed at the connection between the door leaf and the door frame to compensate for the angle generated between the door leaf and the door frame after the door leaf is opened, and an avoidance groove disposed on the door frame to match the compensation end.

[0006] More preferably, the compensation end and the clearance groove are provided with an arc-shaped surface to avoid interference with the rotation of the door leaf when it is opened.

[0007] A further preferred option is a door lock installed on the door leaf.

[0008] The beneficial effects of this utility model are: by setting up a protective structure, it avoids hand pinching accidents when closing the door, plays a safety protection role, and improves safety during use. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model;

[0010] Figure 2 This is a partial cross-sectional structural schematic diagram of the present invention;

[0011] Figure 3 This is a partial cross-sectional structural diagram of the present invention.

[0012] Legend: 1. Door frame; 2. Door leaf; 3. Hollow groove; 4. Compensating end; 5. Clearance groove; 6. Curved surface; 7. Door lock. Detailed Implementation

[0013] The following description, in conjunction with the accompanying drawings, further illustrates the anti-pinch safety edge structure of a double-leaf steel structure air-raid shelter door according to this utility model.

[0014] It should be noted that all directional indicators such as up, down, left, right, front, back, etc. in the embodiments of this utility model are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indicator will also change accordingly.

[0015] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly; for example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0016] See Figures 1-3 As shown, a double-leaf steel structure air defense door has an anti-pinch safety edge structure, including a door frame 1 and a door leaf 2 movably installed on the door frame 1; characterized in that it also includes an anti-pinch protective structure set on the door leaf 2; the protective structure includes a slot 3 set on the door leaf 2 and located on the inner side of the door leaf 2, and an anti-pinch slot 3 is formed between the two door leaves 2 after the two door leaves 2 are closed.

[0017] By setting up the protective structure, the accident of pinching hands is avoided when closing door leaf 2, which plays a safety protection role and improves the safety during use;

[0018] By setting a slot 3 on the inside of the door leaf 2, when the two door leaves 2 are closed, the two slots 3 form an anti-pinch slot 3. By setting the anti-pinch slot 3, when the two door leaves 2 are closed, it avoids the user's hand being at the side of the door leaf 2, which would cause the side of the two door leaves 2 to stick together and cause a hand pinching accident.

[0019] In one embodiment, the protective structure further includes a compensation end 4 provided at the connection between the door leaf 2 and the door frame 1 to compensate for the angle generated between the door leaf 2 and the door frame 1 after the door leaf 2 is opened, and an avoidance groove 5 provided on the door frame 1 that is adapted to the compensation end 4.

[0020] By setting the compensation end 4, when the door leaf 2 is opened, the compensation end 4 is driven to rotate out of the relief groove 5 to compensate for the angle between the door leaf 2 and the door frame 1 caused by opening, so as to avoid the accident of pinching hands caused by the angle between the door leaf 2 and the door frame 1. At the same time, by setting the compensation end 4, it can also prevent the door leaf 2 from being unable to close due to the presence of objects between the door leaf 2 and the door frame 1.

[0021] By setting the clearance groove 5, the compensation end 4 can be moved into the clearance groove 5 when the door leaf 2 is closed, so as to avoid the compensation end 4 affecting the closing of the door leaf 2.

[0022] In one embodiment, the compensation end 4 and the clearance groove 5 are provided with an arc-shaped surface 6 to avoid interference with the rotation of the door leaf 2 when it is opened. By setting the arc-shaped surface 6, the compensation end 4 can rotate with the door leaf 2 without interfering with the opening and closing of the door leaf 2.

[0023] In one embodiment, a door lock 7 is also included, which is used to lock the door when it is closed.

[0024] The scope of protection of this utility model is not limited to the above embodiments and their variations. Conventional modifications and substitutions made by those skilled in the art based on the content of these embodiments are all within the scope of protection of this utility model.

Claims

1. A safety edge structure for preventing hand pinching in a double-leaf steel structure air-raid shelter door, comprising a door frame (1) and door leaves (2) movably mounted on the door frame (1); characterized in that... It also includes a protective structure for preventing hand pinching on the door leaf (2); the protective structure includes a slot (3) on the door leaf (2) and located inside the door leaf (2), forming a hand pinching slot (3) between the two door leaves (2) after the two door leaves (2) are closed.

2. The anti-pinch safety edge structure of a double-leaf steel structure air-raid shelter door according to claim 1, characterized in that: The protective structure also includes a compensation end (4) provided at the connection between the door leaf (2) and the door frame (1) to compensate for the angle between the door leaf (2) and the door frame (1) after the door leaf (2) is opened, and an avoidance groove (5) provided on the door frame (1) to be adapted to the compensation end (4).

3. The anti-pinch safety edge structure of a double-leaf steel structure air-raid shelter door according to claim 2, characterized in that: The compensation end (4) and the clearance groove (5) are provided with an arc-shaped surface (6) to avoid interference with the rotation of the door leaf (2) when it is opened.

4. The anti-pinch safety edge structure of a double-leaf steel structure air-raid shelter door according to claim 1, characterized in that: It also includes a door lock (7) installed on the door leaf (2).