A barrier-free door structure

By incorporating a raised section and a beveled groove in the structure of the entrance security door, and using automotive glass sealing strips, the problems of poor waterproofing and tripping are solved, resulting in better sealing and easier cleaning, thus enhancing safety and comfort.

CN224579252UActive Publication Date: 2026-07-31ZHEJIANG SHUNFAN IND & TRADE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG SHUNFAN IND & TRADE CO LTD
Filing Date
2025-06-04
Publication Date
2026-07-31

AI Technical Summary

Technical Problem

Existing security door structures have problems such as poor waterproofing, easy tripping for the elderly and people with mobility impairments, and inconvenient cleaning of sealing strips.

Method used

The door adopts an accessible door structure with upward-protruding protrusions distributed on the inner side of the bottom edge of the frame. The bottom edge of the door body has a groove that matches the protrusions, and a bevel is set on the sealing strip. The sealing strip includes a bottom soft edge and a side soft edge to enhance the sealing effect. The sealing strip is fixed to the bottom of the door body rather than the frame, and it uses the material of automotive glass sealing strips.

Benefits of technology

It improves the door's waterproofness, preventing rainwater and dust from entering, reducing the risk of tripping, making cleaning easier, and enhancing safety and user comfort.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224579252U_ABST
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Abstract

This utility model discloses a barrier-free door structure, including a door body and a frame. Hinges are installed on the left and right sides of the frame, and the other end of the hinges is connected to the door body. The bottom inner side of the frame has upwardly protruding parts. The bottom side of the door body, and the side above the protruding parts, also has grooves that cooperate with the protruding parts. The left end of the protruding parts is a bevel extending upward from the outside to the inside. This utility model has the advantages of simple structure, good waterproof effect, enhanced safety, and convenient cleaning.
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Description

Technical Field

[0001] This utility model relates to the field of door technology, specifically to a barrier-free door structure. Background Technology

[0002] Doors can be categorized by their usage into security doors, interior doors, and fire doors. Security doors are used in almost every household as the first line of defense, especially in villas or self-built high-rise apartments where the security doors are more expensive, larger, and more functional. Currently, the bottom of the frame of a security door... Figure 1 As shown, these doors all have a stepped structure, with the sealing strip installed between the upper and lower steps. However, the following shortcomings still exist in the fit between the door frame and the door of this type: 1. This structure has poor waterproofing. When it rains heavily, rainwater will run down the door and enter from the bottom of the door and door frame; 2. When the elderly, children, or other people with mobility difficulties pass by, the stepped door frame can easily trip them and cause injury; 3. The sealing strip is installed between the upper and lower steps, making cleaning inconvenient, and it is easy for dust and germs to accumulate over time. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a barrier-free door structure that is simple in structure, waterproof, safer, and easy to clean.

[0004] To solve the above problems, the present invention adopts the following technical solution: An accessible door structure includes a door body and a frame. Hinges are installed on the left and right sides of the frame, and the other end of the hinges is connected to the door body. The bottom inner side of the frame has upwardly protruding protrusions. The bottom side of the door body, and the side above the protrusions, also has grooves that cooperate with the protrusions. The left end of the protrusions is a bevel extending upward from the outside to the inside.

[0005] A further technical solution is that a sealing strip is fixed at the bottom of the door body and inside the groove to further enhance the waterproof, dustproof, insectproof and toxic gas-proof effects.

[0006] A further technical solution is that the bottom end of the sealing strip abuts against the inclined surface of the inclined side, which can achieve a good sealing effect after abutting, effectively preventing rainwater, dust, small insects or other substances such as harmful gases from entering.

[0007] A further technical solution is that the sealing strip includes a sealing strip body, a bottom soft edge, and a side soft edge. The bottom soft edge is connected to the bottom end of the sealing strip body, and the side soft edge is connected to the inner end of the sealing strip body. Two bottom soft edges are distributed at the lower end of the sealing strip body, one of which abuts against the inclined surface of the inclined edge, while the side soft edge abuts against the upper surface of the protrusion. In this way, external rainwater, dust, small insects, or other substances such as harmful gases can be blocked by the bottom soft edge and the inner sides of the side soft edge, thereby improving the sealing effect.

[0008] A further technical solution is that the bottom end of the door body, and the left end of the groove, is also distributed with inwardly extending flanges. When the sealing strip is built into the groove, it can block part of the rainwater when it enters between the door body and the frame, preventing the bottom soft edge from deforming and failing due to the impact of the rainwater.

[0009] The beneficial effects of this barrier-free door structure are: The bottom inner side of the frame has protrusions, and the bottom side of the door body and the side above the protrusions also have grooves that match the protrusions. In addition, the left end of the protrusion is a bevel extending upward from the outside to the inside. When it is hit by heavy rain, the rainwater enters between the protrusions and the grooves and cannot enter the inside of the door body, which can effectively prevent rainwater from entering. Instead of a sealing strip on the frame, it is fixed to the bottom of the door. The bottom of the frame is smooth metal, which makes it easy to clean dust or dirt during cleaning, making it more convenient and preventing the accumulation of dust and dirt caused by the sealing strip. The ramp design prevents elderly people, children, and wheelchair users from tripping or getting stuck due to the large span when crossing the ramp, making it more convenient and safer to use. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings required for the work described in the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is the front view of the original door and frame structure; Figure 2 This is a front view of a barrier-free door structure according to the present invention; Figure 3 This is a cross-sectional view along the AA direction in a barrier-free door structure according to the present invention; Figure 4 This utility model Figure 3 An enlarged diagram of point B in the middle; Figure 5 This is a schematic diagram of a sealing strip in a barrier-free door structure according to the present invention.

[0012] Figure 2-5 In the middle: 1-hinge, 2-frame, 3-door body, 4-flange, 5-sealing strip, 51-side soft edge, 52-bottom soft edge, 53-sealing strip body, 6-protrusion, 7-bevel, 8-groove, 9-floor tile. Detailed Implementation

[0013] The preferred embodiments of this utility model will be described in detail below so that the advantages and features of this utility model can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of this utility model.

[0014] See Figures 2 to 5 As shown, an accessible door structure includes a door body 3 and a frame 2. Hinges 1 are installed on the left and right sides of the frame 2, and the other end of the hinges 1 is connected to the door body 3. The inner side of the bottom end of the frame 2 has upward protrusions 6. The bottom side of the door body 3, and the side above the protrusions 6, also has grooves 8 that cooperate with the protrusions 6. The left side end of the protrusions 6 is a bevel 7 that extends upward from the outside to the inside.

[0015] A sealing strip 5 is fixed to the bottom of the door body 3, inside the groove 8, to further enhance the waterproof, dustproof, insectproof, and toxic gas-proof effects. The bottom end of the sealing strip 5 abuts against the inclined surface of the inclined side 7, achieving a good sealing effect and effectively preventing rainwater, dust, small insects, or other harmful gases from entering. The sealing strip 5 includes a sealing strip body 53, a bottom soft edge 52, and a side soft edge 51. The bottom soft edge 52 is connected to the bottom side of the sealing strip body 53, and the side soft edge 51 is connected to the inner end of the sealing strip body 53. Two bottom soft edges 52 are distributed at the lower end of the sealing strip body 53, one of which abuts against the inclined surface of the inclined side 7, while the side soft edge 51 abuts against the upper surface of the protrusion 6. In this way, external rainwater, dust, small insects, or other harmful gases can be blocked by the bottom soft edge 52 and the inner sides of the side soft edge 51, improving the sealing effect. At the bottom of the door body 3 and on the left side of the groove 8, there are also inwardly extending flanges 4. When the sealing strip 5 is built into the groove 8, it can block some of the rainwater entering between the door body 3 and the frame 2, preventing the bottom soft edge 52 from deforming and failing due to the impact of the rainwater.

[0016] In this embodiment, the sealing strip 5 is made of automotive glass sealing strip material and is fixed to the bottom of the door body 3 by adhesive. Its anti-aging and anti-corrosion effect is better than that of ordinary door sealing strips, which can effectively extend the service life of the sealing strip 5. When rainwater impacts the door body 3 and enters between the bottom of the door body 3 and the top of the frame 2, the rainwater can be effectively blocked from entering the door after encountering the sealing strip 5 because the inner side of the bottom of the frame 2 has upward protrusions 6. Since the protrusions 6 are not attached to the sealing strip 5, it is easier to clean and will not accumulate dirt. During installation, floor tiles 9 are laid on the outer and inner sides of the frame 2. When the elderly, children, or people with mobility difficulties such as those in wheelchairs or other situations pass by, the inclined edge 7 on the left side of the protrusions 6 will not interfere with walking, wheelchairs, or wheeled vehicles (such as scooters or bicycles), making it more convenient.

[0017] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that are conceived without creative effort should be covered by the protection scope of this utility model.

Claims

1. A barrier-free door structure comprising a door body and a frame, a hinge being installed at the left and right side ends of the frame, and the other end of the hinge being connected with the door body, characterized in that: The bottom inner side of the frame has upward protrusions, and the bottom side of the door body, and the side above the protrusions, also has grooves that cooperate with the protrusions. The left end of the protrusion is a bevel extending upward from the outside to the inside.

2. A barrier-free door structure according to claim 1, characterized in that: A sealing strip is fixed at the bottom of the door body, inside the groove.

3. A barrier free door structure according to claim 2, characterized in that: The bottom end of the sealing strip abuts against the inclined surface of the inclined side.

4. A barrier free door structure according to claim 3, characterized in that: The sealing strip includes a sealing strip body, a bottom soft edge, and a side soft edge. The bottom soft edge is connected to the bottom end of the sealing strip body, and the side soft edge is connected to the inner end of the sealing strip body.

5. A barrier-free door structure according to claim 1, characterized in that: The bottom end of the door body, and the left end of the groove, also has inwardly extending flanges.