Double-layer sealing structure for built-in side sliding door

Abstract

This utility model relates to the field of sealing structure technology, and in particular to a double-layer sealing structure for a concealed sliding door, including a vehicle body side wall and a door panel. A metal sealing frame is installed at one end of the vehicle body side wall, a door panel end rubber strip is inserted into one side of the door panel, and a door panel back rubber strip is installed at one end of the panel. The metal sealing frame is U-shaped, with one side being the long side and the other side being the short side. This device forms a first sealing structure through the contact between the long side of the metal sealing frame and one end of the door panel back rubber strip, and forms a second sealing structure through the contact between the short side of the metal sealing frame and one end of the door panel end rubber strip, thereby achieving a double sealing effect, improving dustproof and waterproof performance. At the same time, the cavity can block water and dust flow, reducing the flow of water and dust when the first sealing structure is infiltrated.

Description

Technical Field

[0001] This utility model relates to the field of sealing structure technology, specifically to a double-layer sealing structure for an internal sliding door. Background Technology

[0002] In numerous industrial and residential scenarios, sealing structures play a crucial role. They are designed to prevent substances such as gases, liquids, or solid particles from passing through specific gaps or interfaces, thereby maintaining a stable internal environment, ensuring normal equipment operation, and enhancing safety. As a critical passageway for passengers entering and exiting the carriages, the performance of the sealing structure of concealed side sliding doors in rail vehicles directly affects the vehicle's operational quality. Concealed side sliding doors are widely used in urban rail vehicles such as subways and light rails, as well as some railway passenger cars, due to their advantages of relatively simple structure, convenient maintenance, and small footprint.

[0003] During the design process of this utility model, the following problems were discovered in the existing technology:

[0004] The common sealing structure of concealed sliding doors in rail vehicles uses a single-layer sealing structure to achieve the sealing function of concealed sliding doors. This makes it easy for light and rain to leak at the seal, and the dustproof effect is poor, allowing dust to easily enter the room. At the same time, it is not resistant to water flow impact and has a low waterproof rating. Utility Model Content

[0005] The purpose of this invention is to provide a double-layer sealing structure for concealed sliding doors to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a double-layer sealing structure for a concealed sliding door, comprising a vehicle body side wall and a door panel, wherein a metal sealing frame is installed at one end of the vehicle body side wall, a door panel end rubber strip is inserted into one side of the door panel, and a door panel back rubber strip is installed at one end of the door panel.

[0007] The metal sealing frame is U-shaped, with one side being the long side and the other side being the short side.

[0008] The long side of the metal sealing frame and one end of the adhesive strip on the back of the door leaf form a first sealing structure, and the short side of the metal sealing frame and one end of the adhesive strip at the end of the door leaf form a second sealing structure.

[0009] There is a cavity between the first sealing structure and the second sealing structure.

[0010] The beneficial effects of this utility model are as follows: the first sealing structure is formed by the adhesion between the long side of the metal sealing frame and one end of the adhesive strip on the back of the door leaf, which can effectively block outdoor light, moisture, water flow and dust from entering. The second sealing structure is formed by the adhesion between the short side of the metal sealing frame and one end of the adhesive strip at the end of the door leaf, which can achieve a further sealing effect, thereby achieving a double sealing effect, further improving the dustproof and waterproof effect. At the same time, the cavity can block water flow and dust. When water and dust enter the first sealing structure, the flow of water and dust can be reduced.

[0011] To enable effective installation of the metal sealing frame:

[0012] Further configuration: The metal sealing frame is installed at one end of the vehicle body side wall by bolts and anti-loosening washers.

[0013] By adopting the above technical solution, the metal sealing frame can be fixed with bolts, and then loosening washers can be used to reduce the possibility of loosening. This allows the metal sealing frame to be effectively installed on one end of the vehicle body side wall, thereby forming a double-layer sealing structure with the door leaf end rubber strip and the door leaf back rubber strip, ensuring the stability and effectiveness of the sealing structure.

[0014] To achieve effective installation of the adhesive strip on the back of the door leaf:

[0015] Further configuration: The adhesive strip on the back of the door leaf is installed at one end of the door leaf panel via an aluminum plate strip, bolts, and anti-loosening washers.

[0016] By adopting the above technical solution, the aluminum plate strip can be pressed tightly onto the surface of the back adhesive strip of the door leaf. Then, with the help of anti-loosening washers, bolts are used for installation and fixing. This allows the back adhesive strip of the door leaf to be effectively installed on one end of the door leaf panel, thereby forming a sealing structure with the metal sealing frame.

[0017] To effectively block dust, moisture, and impurities:

[0018] Further configuration: The material of the door leaf end strip and the door leaf back strip is EPDM or silicone extruded strip.

[0019] By adopting the above technical solution, the end strip of the door leaf and the back strip of the door leaf can be tightly attached to the long and short sides of the metal sealing frame, respectively. This can effectively prevent dust, moisture and impurities from entering, while also having a certain shock absorption and buffering effect, ensuring the stability of the sealing structure. At the same time, it has excellent weather resistance and is not easy to lose its sealing effect due to temperature fluctuations and changes.

[0020] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the main view of this utility model;

[0022] Figure 2 This is a top view of the present invention;

[0023] Figure 3 This is a top-view explosion diagram of the present invention.

[0024] In the picture: 1. Vehicle side wall; 2. Door panel; 3. Metal sealing frame; 4. Door end strip; 5. Door back strip. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0026] Please see Figures 1 to 3 A double-layer sealing structure for a concealed sliding door includes a vehicle body side wall 1 and a door panel 2. A metal sealing frame 3 is installed at one end of the vehicle body side wall 1, a door leaf end rubber strip 4 is inserted into one side of the door panel 2, and a door leaf back rubber strip 5 is installed at one end of the door panel 2.

[0027] The metal sealing frame 3 is U-shaped, with one side of the metal sealing frame 3 being the long side and the other side being the short side.

[0028] The long side of the metal sealing frame 3 and one end of the adhesive strip 5 on the back of the door leaf form a first sealing structure, and the short side of the metal sealing frame 3 and one end of the adhesive strip 4 at the end of the door leaf form a second sealing structure.

[0029] There is a cavity between the first sealing structure and the second sealing structure.

[0030] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, the metal sealing frame 3 is installed on one end of the vehicle body side wall 1 by bolts and anti-loosening washers.

[0031] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, the back adhesive strip 5 of the door leaf is installed at one end of the door leaf panel 2 by means of aluminum plate pressure strip, bolts and anti-loosening washers.

[0032] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, the adhesive strips 4 at the end of the door leaf and 5 on the back of the door leaf are made of EPDM or silicone extruded adhesive strips.

[0033] This type of concealed side sliding door uses a double-layer sealing structure, and its working process is as follows:

[0034] First, press the aluminum plate strip firmly onto the surface of the back adhesive strip 5 of the door leaf. Then, using anti-loosening washers, use bolts to install and fix it, ensuring that the back adhesive strip 5 of the door leaf can be effectively installed at one end of the door leaf panel 2. Next, fix the metal sealing frame 3 with bolts, and then use loosening washers to reduce the possibility of loosening, ensuring that the metal sealing frame 3 can be effectively installed at one end of the vehicle body side wall 1. Then, insert the end adhesive strip 4 of the door leaf into one side of the door leaf panel 2. When the door leaf panel 2 moves horizontally, the end adhesive strip 4 and the back adhesive strip 5 of the door leaf will also move horizontally. Furthermore, during the movement, the back adhesive strip 5 of the door leaf will not touch the short side of the metal sealing frame 3. When it is moved to the designated position, the back adhesive strip 5 of the door leaf will adhere to the long side of the metal sealing frame 3, thereby forming a first sealing structure. One end of the end adhesive strip 4 of the door leaf will adhere to the short side of the metal sealing frame 3, thereby forming a second sealing structure. This creates a double-layer sealing effect, effectively blocking outdoor dust, moisture and water flow. A cavity will be formed between the first sealing structure and the second sealing structure. When water and dust enter the first sealing structure, the flow of water and dust can be reduced.

[0035] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0036] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only for the purpose of helping to understand the method and core ideas of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of this utility model, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without modification, should all be considered within the protection scope of this utility model.

Claims

1. A double-layer sealing structure for a concealed side sliding door, characterized in that: Includes a vehicle body side wall (1) and a door panel (2). A metal sealing frame (3) is installed at one end of the vehicle body side wall (1). A door end adhesive strip (4) is inserted into one side of the door panel (2). A door back adhesive strip (5) is installed at one end of the door panel (2). The metal sealing frame (3) is U-shaped, with one side of the metal sealing frame (3) being the long side and the other side of the metal sealing frame (3) being the short side; The long side of the metal sealing frame (3) and the adhesive strip (5) on the back of the door leaf form a first sealing structure, and the short side of the metal sealing frame (3) and the adhesive strip (4) at the end of the door leaf form a second sealing structure. There is a cavity between the first sealing structure and the second sealing structure.

2. The double-layer sealing structure for a concealed sliding door as described in claim 1, characterized in that: The metal sealing frame (3) is installed on one end of the side wall (1) of the vehicle body by bolts and anti-loosening washers.

3. The double-layer sealing structure for a concealed sliding door as described in claim 1, characterized in that: The back adhesive strip (5) of the door leaf is installed on one end of the door leaf panel (2) by means of aluminum plate pressure strip, bolts and anti-loosening washers.

4. The double-layer sealing structure for a concealed side sliding door as described in claim 1, characterized in that: The door leaf end adhesive strip (4) and the door leaf back adhesive strip (5) are made of EPDM or silicone extruded adhesive strips.

Images