Sealing structure of barrier-free entrance door

Abstract

The utility model provides a sealing structure of a barrier-free entrance door, and is applied to the technical field of doors and windows. The telescopic sealing structure is arranged at the bottom of the door leaf, so that the sealing effect of the barrier-free entrance door is achieved under the condition that the thickness of the door body is not increased. The barrier-free sealing piece achieves automatic lifting of the sealing rubber strip when the door leaf is opened and closed through cooperation of the transmission strip and the lifting structure. Through the design of the transmission strip, the sealing structure can automatically adjust the position of the lifting sealing rubber strip according to the opening and closing states of the door, and therefore the good sealing effect is achieved under the condition that the thickness of the door body is not increased.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of doors and windows, and more particularly to a sealing structure of a barrier-free entrance door. BACKGROUND

[0002] At present, the entrance doors of villas and self-built houses on the market need to have water-tightness, air-tightness, sound insulation and the like on the outside of the building, so the entrance doors of such buildings are mostly entrance door structures with tracks, while the entrance doors of some commodity houses only need to have air-tightness and sound insulation and do not need to consider water-tightness, so the entrance doors of commodity houses are usually set to be of the trackless type.

[0003] Therefore, there is a lack of a barrier-free entrance door without a track which can meet the requirements of water-tightness, air-tightness and sound insulation and has a small door body. CONTENT OF THE UTILITY MODEL

[0004] The present application aims to provide a sealing structure of a barrier-free entrance door which can meet the requirements of water-tightness, air-tightness and sound insulation and has a small door body without a track.

[0005] In a first aspect, a sealing structure of a barrier-free entrance door is provided, the barrier-free entrance door comprising a door leaf, and the sealing structure being telescopically arranged at the bottom of the door leaf.

[0006] The sealing structure comprises at least a barrier-free sealing member, the barrier-free sealing member being connected to the door leaf and comprising at least a transmission bar arranged in sliding mode, a lifting structure connected below the transmission bar, and a lifting sealing rubber strip connected below the lifting structure.

[0007] The side of the transmission bar close to the ground is provided with a contact plane and a first vertex protruding from the contact plane.

[0008] The lifting structure is connected to the contact plane of the transmission bar when the door leaf is opened, so that the lifting sealing rubber strip is automatically lifted away from the ground; and the lifting structure is connected to the first vertex of the transmission bar when the door leaf is closed, so that the lifting sealing rubber strip is automatically lowered to be in contact with the ground to form a seal.

[0009] The sealing structure of the barrier-free entrance door provided by the present application solves the problem of realizing sealing effect without increasing the thickness of the door body by arranging a telescopic sealing structure at the bottom of the door leaf. The barrier-free sealing member realizes automatic lifting of the sealing rubber strip when the door leaf is opened and closed through cooperation of the transmission bar and the lifting structure. The design of the transmission bar enables the sealing structure to automatically adjust the position of the lifting sealing rubber strip according to the opening and closing state of the door, so as to realize good sealing effect without increasing the thickness of the door body.

[0010] Further, the end of the transmission bar is provided with a second vertex protruding from the door leaf, which first contacts the door frame when the door leaf is closed, so that the transmission bar slides in the direction of opening the door leaf, so that the first vertex is connected with the lifting structure.

[0011] The sealing structure of the barrier-free entrance door provided by the present application is characterized in that the second vertex first contacts the door frame when the door leaf is closed, and the transmission bar slides in the direction of opening the door leaf under the action of the contact force, so that the first vertex is connected with the lifting structure, thereby causing the lifting sealing rubber strip to automatically descend and contact the ground to form a seal.

[0012] Further, a first inclined surface is arranged between the contact plane and the first vertex, and the lifting structure runs along the first inclined surface.

[0013] The sealing structure of the barrier-free entrance door provided by the present application is characterized in that a first inclined surface is arranged between the contact plane and the first vertex, and the lifting structure runs along the first inclined surface, thereby effectively solving the problem of stable lifting operation of the lifting structure. This design enables the lifting structure to stably and controllably operate during the opening and closing of the door leaf, thereby ensuring the accurate positioning of the sealing rubber strip and the sealing effect. At the same time, this design simplifies the structure of the lifting mechanism and improves its reliability and durability.

[0014] Further, the lifting structure includes a lifting vertex, and a second inclined surface matching the first inclined surface is arranged on the side of the lifting vertex, and the second inclined surface slides in contact with the first inclined surface.

[0015] The sealing structure of the barrier-free entrance door provided by the present application is characterized in that a matching second inclined surface is arranged, and the lifting structure can stably lift along the first inclined surface of the transmission bar. When the door leaf is opened, the lifting structure rises along the first inclined surface through the second inclined surface, so that the lifting sealing rubber strip moves away from the ground; when the door leaf is closed, the lifting structure descends along the first inclined surface through the second inclined surface, so that the lifting sealing rubber strip contacts the ground to form a seal. This design realizes the automatic lifting of the lifting sealing rubber strip and improves the reliability and convenience of use of the sealing structure.

[0016] Further, a spring is arranged on the side of the lifting structure close to the ground, and the spring is used to connect the lifting sealing rubber strip to prevent the lifting sealing rubber strip from colliding with the lifting vertex during the automatic lifting.

[0017] Further, the sealing structure further includes a barrier-free auxiliary material fixed at the bottom of the door leaf for mounting the barrier-free sealing member.

[0018] Further, the barrier-free sealing member further includes a low-friction strip arranged below the transmission bar, which contacts the transmission bar to facilitate the sliding of the transmission bar.

[0019] Further, the barrier-free seal further comprises an outer box connected with the barrier-free auxiliary material fixed on the door leaf, having a mounting cavity opening towards the bottom surface and a lifting guide groove arranged on both sides of the mounting cavity, the mounting cavity being used for mounting the transmission bar, the lifting structure and the lifting sealant strip, and the lifting guide groove being used for automatically lifting the lifting structure and the lifting sealant strip along the lifting guide groove.

[0020] Further, the lifting structure further comprises a lifting metal strip, both sides of the lifting metal strip being provided with a lifting guide strip capable of being inserted into the lifting guide groove, and a mounting surface for fixing the lifting sealant strip.

[0021] Further, the mounting surface is provided with a mounting groove embeddedly connected with the lifting sealant strip.

[0022] Beneficial effects: The sealing structure of the barrier-free entrance door provided by the present application solves the problem of realizing sealing effect without increasing the thickness of the door body by arranging the sealable structure at the bottom of the door leaf. The barrier-free seal realizes the automatic lifting of the sealant strip when the door leaf is opened and closed through the cooperation of the transmission bar and the lifting structure. The design of the transmission bar enables the sealing structure to automatically adjust the position of the lifting sealant strip according to the opening and closing state of the door, thereby realizing good sealing effect without increasing the thickness of the door body. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The structural diagram of the sealing structure of the barrier-free entrance door provided by the present application.

[0024] Figure 2 The structural diagram of the barrier-free seal provided by the present application. Figure 1 The sectional view along the B-B direction.

[0025] Figure 3 The sectional view along the B-B direction. Figure 1 The sectional view along the B-B direction.

[0026] Figure 4 The structural diagram of the barrier-free seal provided by the present application.

[0027] Figure 5 The exploded view of the barrier-free seal provided by the present application.

[0028] In the figure: 1, door leaf; 2, door frame; 3, sealing structure; 31, barrier-free sealing element; 32, barrier-free auxiliary material; 311, transmission bar; 312, lifting top point; 313, spring; 314, lifting metal strip; 315, lifting sealing rubber strip; 316, outer box; 317, first top point; 318, contact plane; 319, second top point; 320, first inclined surface; 321, second inclined surface; 322, mounting cavity; 323, lifting guide groove; 324, mounting surface; 325, mounting groove; 326, lifting guide strip; 327, low-friction strip; 4, ground. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and indicated in the accompanying drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0030] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0031] At present, there is a lack of a barrier-free entry door structure that can meet the water-tight, air-tight, sound insulation performance and maintain a relatively thin door body in the prior art. In order to solve this problem, the present application proposes a sealing structure of a barrier-free entry door.

[0032] Please refer to Figures 1 to 5 , in a first aspect, a sealing structure of a barrier-free entry door, the barrier-free entry door comprising a door leaf 1, the sealing structure 3 being telescopically arranged at the bottom of the door leaf 1;

[0033] The sealing structure 3 at least comprises a barrier-free sealing element 31, the barrier-free sealing element 31 being connected with the door leaf 1, at least comprising a slidingly arranged transmission bar 311, a lifting structure connected below the transmission bar 311, and a lifting sealing rubber strip 315 connected below the lifting structure;

[0034] The side of the transmission bar 311 close to the ground 4 is provided with a contact plane 318 and a first top point 317 protruding from the contact plane 318;

[0035] When the door leaf 1 is opened, the lifting structure is connected with the contact plane 318 of the transmission bar 311, so that the lifting sealing rubber strip 315 is automatically lifted away from the ground 4; when the door leaf 1 is closed, the lifting structure is connected with the first vertex 317 of the transmission bar 311, so that the lifting sealing rubber strip 315 is automatically lowered to be in contact with the ground 4 to form a seal.

[0036] Wherein, the barrier-free seal 31 refers to a retractable sealing device arranged at the bottom of the door leaf 1, which can be realized by the combination of the transmission bar 311, the lifting structure and the lifting sealing rubber strip 315. The transmission bar 311 refers to a rod member that can slide at the bottom of the door leaf 1, which can be realized by a strip-shaped structure made of metal or engineering plastic. The lifting structure refers to a mechanism connected with the transmission bar 311 and capable of driving the sealing rubber strip to move up and down, which can be realized by a lifting block with an inclined surface. The lifting sealing rubber strip 315 refers to an elastic member in contact with the ground 4 to form a seal, which can be realized by a strip-shaped sealing member made of rubber or other elastic materials.

[0037] The application realizes the automatic lifting of the sealing rubber strip when the door leaf 1 is opened and closed by arranging the contact plane 318 and the first vertex 317 on the transmission bar 311, which not only ensures the sealing effect but also avoids the continuous friction between the lifting sealing rubber strip 315 and the ground 4. This design does not require additional driving devices and has a simple and reliable structure. The principle of automatic lifting to realize sealing is as follows: the transmission bar 311 is made of wear-resistant metal material and has a strip shape, which is installed at the bottom of the door leaf 1 through sliding fit. The lower surface of the transmission bar 311 is designed with a flat contact plane 318, and the first vertex 317 is protrudingly arranged on the contact plane 318. The lifting structure can be made of engineering plastic, the upper part of which is in contact with the transmission bar 311, and the lower part is connected with the lifting sealing rubber strip 315. The lifting sealing rubber strip 315 is made of wear-resistant rubber material and has good elasticity and sealing performance. When the door leaf 1 is opened, the lifting structure is in contact with the contact plane 318 of the transmission bar 311, so that the lifting sealing rubber strip 315 remains in the lifted state. When the door leaf 1 is closed, the lifting structure is in contact with the first vertex 317 of the transmission bar 311, which presses the lifting sealing rubber strip 315 to descend and form a seal with the ground 4. This structure design enables the lifting sealing rubber strip 315 to automatically adjust the position according to the state of the door leaf 1, which not only ensures the sealing effect but also reduces the wear. For details, please refer to Figure 2 、 Figure 3 , Figure 2 and Figure 3 are the states of the barrier-free seal 31 when the door leaf 1 is opened and the states of the barrier-free seal 31 when the door leaf 1 is closed, respectively.

[0038] Further, the end of the transmission bar 311 is provided with a second vertex 319 protruding from the door leaf 1, the second vertex 319 first contacts the door frame 2 when the door leaf 1 is closed, so that the transmission bar 311 slides in the direction of opening of the door leaf 1, so that the first vertex 317 is connected with the lifting structure.

[0039] Wherein, the direction shown by the arrow is the direction of opening of the door leaf to the left, and the direction of closing of the door leaf to the right. Figure 1

[0040] Specifically, please refer to Figure 4 , Figure 5 The second vertex 319 at the end of the transmission bar 311 makes the second vertex 319 first contact the door frame 2 when the door leaf 1 is closed, and through the action of the contact force, the transmission bar 311 slides in the direction of opening of the door leaf 1 (i.e. to the right). The sliding of the transmission bar 311 makes the first vertex 317 connected with the lifting structure, so that the lifting sealing rubber strip 315 is automatically lowered to contact the ground 4, forming a seal.

[0041] Specifically, the second vertex 319 can be designed in various shapes, such as a circle, a triangle or a rectangle, etc. The height of the second vertex 319 can be adjusted according to the gap between the door frame 2 and the door leaf 1, to ensure that the door leaf 1 can effectively contact the door frame 2 when closed. The sliding distance of the transmission bar 311 can be controlled by adjusting the position of the second vertex 319, so as to accurately control the lowering height of the lifting sealing rubber strip 315.

[0042] The second vertex 319 and the transmission bar 311 can be provided as an integrally formed structure, facilitating the sliding of the transmission bar 311 after being contacted. During the closing process of the door leaf 1, the second vertex 319 first contacts the door frame 2, and this contact point becomes the fulcrum of the sliding of the transmission bar 311. As the door leaf 1 continues to close, the second vertex 319 is subjected to a reaction force from the door frame 2, and this force is converted into the power for the sliding of the transmission bar 311 in the direction of closing of the door leaf 1. The sliding of the transmission bar 311 drives the first vertex 317 to contact the lifting structure, and further drives the lifting sealing rubber strip 315 to descend. This structure design is simple, without the need for additional driving mechanism, reducing the failure rate and maintenance cost.

[0043] Further, a first inclined surface 320 is provided between the contact plane 318 and the first vertex 317, and the lifting structure operates along the first inclined surface 320.

[0044] ​The scheme sets the first inclined surface 320, so that the lifting structure can be lifted along a fixed angle, avoiding shaking or instability during lifting. The contact plane 318 and the first vertex 317 are respectively the starting point and the end point of the lifting structure operation, ensuring the operation range of the lifting structure. Thus, the lifting structure can stably and controllably operate during the opening and closing of the door leaf 1, thereby ensuring the accurate positioning and sealing effect of the sealing strip.

[0045] In some embodiments, the lifting structure can be connected to the first inclined surface 320 by sliding and be stably supported by the spring 313 or other elastic elements. The angle of the first inclined surface 320 can be adjusted according to the size and requirements of the door leaf 1 to achieve the best lifting effect. Through this design, the problem of smooth lifting operation of the lifting structure can be effectively solved, improving the reliability and durability of the sealing structure 3.

[0046] In comparison with the prior art, the present application achieves smooth lifting of the lifting structure by setting the first inclined surface 320 between the contact plane 318 and the first vertex 317, avoiding the poor sealing problem caused by the absence of a track in the traditional design.

[0047] Further, the lifting structure includes a lifting vertex 312, and a second inclined surface 321 is arranged on the side of the lifting vertex 312 and matches the first inclined surface 320. The second inclined surface 321 is in contact with the first inclined surface 320 and slides smoothly.

[0048] The lifting structure includes a lifting vertex 312, which is designed to enable the lifting structure to effectively contact the first vertex 317 and the contact plane 318 of the transmission bar 311. The second inclined surface 321 arranged on the side of the lifting vertex 312 matches the first inclined surface 320 on the transmission bar 311, which ensures that the two inclined surfaces can be in close contact and slide smoothly.

[0049] Further, a spring 313 is arranged on the side of the lifting structure close to the ground 4, and the spring 313 is used to connect the lifting sealing strip 315 to prevent the lifting sealing strip 315 from colliding with the lifting vertex 312 during automatic lifting.

[0050] Specifically, Figure 5 The spring 313 is connected to the side of the lifting structure close to the ground 4 and can be connected in various ways. For example, the spring 313 can be fixed on the lifting structure by screw connection, buckle connection or welding. The other end of the spring 313 is connected to the lifting sealing strip 315, which can also be connected in various ways, such as adhesion, buckling or screw connection.

[0051] While the lifting structure already features a lifting vertex 312 and an inclined surface for automatic lifting, the addition of a spring 313 further optimizes this functionality. The presence of spring 313 not only prevents collisions but also makes the lifting process smoother and more controllable. When the door leaf 1 is opened, spring 313 assists in the upward movement of the lifting seal 315, reducing friction. When the door leaf 1 is closed, spring 313 cushions the impact of the descent, ensuring a tighter seal.

[0052] by Figure 1 The direction shown is the standard. When the door leaf 1 slides to the right and closes, the transmission bar 311 first resists the door frame and slides to the left, causing the first vertex 317 to squeeze the lifting structure, the spring 313 contracts, and the lifting sealing strip 315 contacts the ground downward under this squeezing to form a sealing structure; when the door leaf 1 slides to the left and opens, the spring 313 recovers from the contracted state and applies an upward elastic force to the first inclined surface 320 on the transmission bar 311 through the second inclined surface 321 of the lifting vertex 312. After this elastic force is decomposed, it will apply a leftward sliding force to the transmission bar 311, so that the transmission bar 311 automatically pops out of the door leaf 1, and the lifting vertex 312 automatically rises and connects with the contact plane 318 on the transmission bar 311, thereby driving the lifting sealing strip 315 to automatically rise away from the ground 4.

[0053] Furthermore, the sealing structure 3 also includes a barrier-free auxiliary material 32 , which is fixed to the bottom of the door leaf 1 and is used to install the barrier-free seal 31 .

[0054] By fixing the barrier-free auxiliary material 32 to the bottom of the door leaf 1 and then installing the barrier-free seal 31 on this auxiliary material, the entire sealing structure 3 is firmly connected to the door leaf 1. This design not only provides a reliable installation method, but also ensures the normal operation of the sealing structure 3, allowing it to expand and contract freely when the door is opened and closed.

[0055] Specifically, the barrier-free auxiliary material 32 can be fixedly connected to the door leaf 1 in various forms. For example, the barrier-free auxiliary material 32 can be firmly fixed to the bottom of the door leaf 1 using screws, clips, or adhesives. The barrier-free auxiliary material 32 can be made of metal, plastic, or composite materials to meet different strength and weight requirements.

[0056] Furthermore, the barrier-free seal 31 further includes a low-friction strip 327 disposed below the transmission bar 311 . The low-friction strip 327 contacts the transmission bar 311 to facilitate sliding of the transmission bar 311 .

[0057] The low-friction strip 327 is arranged below the transmission strip 311, which optimizes the design of the structure and effectively reduces the frictional resistance between the transmission strip 311 and other components, making the sliding of the transmission strip 311 more smooth. The arrangement of the low-friction strip 327 not only solves the problem of smooth sliding of the transmission strip 311, but also improves the sensitivity and reliability of the sealing structure 3. Specifically, the low-friction strip 327 can be made of low-friction coefficient materials such as polytetrafluoroethylene and nylon.

[0058] The low-friction strip 327 can be arranged with two, respectively located on both sides of the transmission strip 311, reducing the contact area with the transmission strip 311, and connecting with the transmission strip 311 in the form of line contact, forming a good sliding support structure.

[0059] Further, the barrier-free sealing element 31 further comprises an outer box 316 connected with the barrier-free auxiliary material 32 fixed on the door leaf 1, having a mounting cavity 322 opening towards the bottom surface and a lifting guide groove 323 arranged on both sides of the mounting cavity 322, the mounting cavity 322 is used for mounting the transmission strip 311, the lifting structure and the lifting sealing rubber strip 315, and the lifting guide groove 323 is used for automatically lifting the lifting structure and the lifting sealing rubber strip 315 along the lifting guide groove 323.

[0060] The outer box 316 as the main structure of the barrier-free sealing element 31 is fixed on the door by connecting with the barrier-free auxiliary material 32, providing the installation basis of the sealing structure 3. The mounting cavity 322 opening towards the bottom surface is arranged inside the outer box 316, which is used to accommodate the transmission strip 311, the lifting structure and the lifting sealing rubber strip 315, so that these components can work normally in the cavity.

[0061] The lifting guide groove 323 is arranged on both sides of the mounting cavity 322, which provides a stable motion trajectory for the lifting structure and the lifting sealing rubber strip 315, so that they can automatically lift along the predetermined path. This design not only ensures the motion reliability of the sealing element, but also avoids deviation and jamming during lifting, improving the working efficiency and service life of the entire sealing structure 3.

[0062] Specifically, the outer box 316 can be made of metal materials or high-strength engineering plastics to ensure the stability and durability of the structure. The connection mode of the outer box 316 and the barrier-free auxiliary material 32 can adopt bolt fixing, buckle connection or adhesion, etc. to adapt to different installation needs. The design of the mounting cavity 322 can adjust its depth and width according to actual needs to accommodate transmission strips 311, lifting structures and lifting sealing rubber strips 315 of different sizes.

[0063] The design of the lifting guide groove 323 can adopt various shapes, such as a U-shaped groove, a V-shaped groove, or a dovetail groove, to provide better guiding effect, among which the U-shaped groove is preferred. The material of the guide groove can be selected from low-friction coefficient materials, such as polytetrafluoroethylene (PTFE) coating, to reduce friction during lifting and improve the smoothness of movement.

[0064] Further, the lifting structure also includes a lifting metal strip 314, which is provided with lifting guide strips 326 on both sides that can be inserted into the lifting guide groove 323, and a mounting surface 324 that fixes the lifting sealing rubber strip 315.

[0065] Among them, the lifting guide strips 326 on both sides of the lifting metal strip 314 can be inserted into the lifting guide groove 323, thereby providing stable guidance during lifting. The mounting surface 324 provides a reliable fixing point for the lifting sealing rubber strip 315, ensuring that the sealing rubber strip can be tightly connected to the lifting structure. The design of the lifting metal strip 314 can be diversified, such as using different materials or cross-sectional shapes to adapt to different use environments. The cooperation accuracy of the lifting guide strip 326 and the lifting guide groove 323 directly affects the stability of the lifting structure, so the smoothness of the lifting process can be improved by optimizing the size cooperation of the guide strip and the guide groove.

[0066] Further, the mounting surface 324 is provided with a mounting groove 325 for embedding and connecting with the lifting sealing rubber strip 315.

[0067] Among them, by opening the mounting groove 325 on the mounting surface 324, a position for embedding and connecting the lifting sealing rubber strip 315 is provided, so that the two can be tightly combined, thereby ensuring the stability and reliability of the sealing structure 3. The design of the mounting groove 325 allows the lifting sealing rubber strip 315 to be firmly fixed to the mounting surface 324, avoiding the problem of loosening or falling off that may occur during the opening and closing of the door leaf 1. At the same time, the embedded connection method also helps to improve the integrity and aesthetics of the entire sealing structure 3.

[0068] Specifically, the mounting groove 325 can be designed as a groove structure that matches the shape of the lifting sealing rubber strip 315. For example, the mounting groove 325 can be a long strip-shaped groove, the width and depth of which match the corresponding dimensions of the lifting sealing rubber strip 315. This design can ensure that the lifting sealing rubber strip 315 can be stably embedded in the mounting groove 325 and will not shake or fall off.

[0069] The above only describes the embodiments of the present application and does not limit the protection scope of the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A sealing structure for a barrier-free entrance door, the barrier-free entrance door comprising a door leaf (1), characterized in that The sealing structure (3) is telescopically arranged at the bottom of the door leaf (1); The sealing structure (3) comprises at least a barrier-free seal (31) connected to the door leaf (1), at least a transmission bar (311) arranged in sliding mode, a lifting structure connected below the transmission bar (311), and a lifting sealing rubber strip (315) connected below the lifting structure. The transmission bar (311) is provided with a contact plane (318) and a first vertex (317) protruding from the contact plane (318) on the side close to the ground (4). The lifting structure is connected with the contact plane (318) of the transmission bar (311) when the door leaf (1) is opened, so that the lifting sealing rubber strip (315) automatically rises away from the ground (4); the lifting structure is connected with the first vertex (317) of the transmission bar (311) when the door leaf (1) is closed, so that the lifting sealing rubber strip (315) automatically descends to contact the ground (4) to form a seal.

2. The seal structure for a barrier-free door entry according to claim 1, wherein The end of the transmission bar (311) is provided with a second vertex (319) protruding from the door leaf (1), which first contacts the door frame (2) when the door leaf (1) is closed, so that the transmission bar (311) slides in the direction when the door leaf (1) is opened, so that the first vertex (317) is connected with the lifting structure.

3. A seal for a barrier-free entry door according to claim 2, wherein The contact plane (318) and the first vertex (317) are provided with a first inclined plane (320), and the lifting structure operates in lifting along the first inclined plane (320).

4. The seal structure of a barrier-free entrance door according to claim 3, wherein The lifting structure comprises a lifting vertex (312), and the side of the lifting vertex (312) is provided with a second inclined plane (321) matched with the first inclined plane (320), and the second inclined plane (321) is in contact and sliding with the first inclined plane (320).

5. A seal for a barrier-free entry door according to claim 4, wherein The side close to the ground (4) of the lifting structure is provided with a spring (313) for connecting the lifting sealing rubber strip (315) to prevent the lifting sealing rubber strip (315) from colliding with the lifting vertex (312) during automatic lifting.

6. The seal for a barrier-free entry door of claim 1, wherein, The sealing structure (3) further comprises a barrier-free auxiliary material (32) fixed at the bottom of the door leaf (1) for mounting the barrier-free seal (31).

7. The seal for a barrier-free entry door of claim 1, wherein, The barrier-free seal (31) further comprises a low-friction strip (327) arranged below the transmission bar (311), which is in contact with the transmission bar (311) to facilitate the sliding of the transmission bar (311).

8. The seal for a barrier-free entry door of claim 1, wherein, The barrier-free seal (31) further comprises an outer box (316) connected with the barrier-free auxiliary material (32) fixed on the door leaf (1), having a mounting cavity (322) opening towards the bottom surface and a lifting guide groove (323) arranged on both sides of the mounting cavity (322), the mounting cavity (322) being used for mounting the transmission bar (311), the lifting structure and the lifting sealant strip (315), and the lifting guide groove (323) being used for automatically lifting the lifting structure and the lifting sealant strip (315) along the lifting guide groove (323).

9. A seal for a barrier-free entry door according to claim 8, wherein The lifting structure further comprises a lifting metal strip (314), both sides of the lifting metal strip (314) being provided with a lifting guide strip (326) capable of being inserted into the lifting guide groove (323), and a mounting surface (324) for fixing the lifting sealant strip (315).

10. The seal structure for a barrier-free door entry according to claim 9, wherein The mounting surface (324) is provided with a mounting groove (325) embeddedly connected with the lifting sealant strip (315).

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