Double-bubble structure door frame sealing strip for split type frameless vehicle door

Abstract

The utility model relates to the technical field of door frame sealing strips, in particular to a double-bubble structure door frame sealing strip for a split type frameless vehicle door, which comprises an extrusion part and an installation part, the extrusion part is used for being directly contacted with the vehicle door to be extruded when the vehicle door is closed, the installation part is connected with a vehicle door metal plate spigot, and a bending R area special for extrusion is arranged on the extrusion part. A double-bubble structure is arranged in the extrusion part at the position of the bending R area, and a supporting rod is arranged between the double-bubble structure. The utility model aims to reduce the height loss of the bubble shape and improve the sealing performance in the bending R area at the position of the door frame sealing strip.

Description

Technical Field

[0001] The present application relates to the technical field of door frame sealing strips, and specifically discloses a door frame sealing strip with a double-bubble structure for a split frameless door. Background Art

[0002] Automobile door frame strips are an important part of automobile sealing strips. They are installed on the edge of the door frame stop of the automobile to seal the gap between the door and the door frame, prevent dust, rain, noise, etc. from entering the vehicle, and at the same time cover the sheet metal parts of the automobile door frame and the inner body trim to play a decorative role. At present, the core materials of door frame strips are mainly metal core materials such as steel core materials and aluminum core materials. Their main function is to serve as a U-shaped skeleton to help the door frame strip form and maintain its shape; and during the assembly process, a corresponding clamping force is generated to prevent the door frame strip from slipping out of the sheet metal stop. With the increasingly fierce competition in the automobile industry, automobile parts are facing various pressures such as appearance, assembly performance, product performance, and lightweight, and the product structure needs to be further improved;

[0003] Chinese Publication No. CN217835326U discloses a surface structure of a foaming adhesive for an automobile sealing strip, including an extrusion part and an installation part. The extrusion part is used to directly contact the door when closing the door and be extruded, and the installation part is connected to the sheet metal stop of the door. The extrusion part includes a surface foaming adhesive structure and a dense adhesive structure, and a composite foaming adhesive structure for wrapping the extrusion part is provided on the outer surface of the extrusion part; the composite foaming adhesive structure includes a connection layer, a fiber layer, an isolation layer, and an external foaming adhesive layer arranged from the inside to the outside;

[0004] In the prior art, the door frame sealing strips of existing split frameless doors are mainly single-bubble. For example, at the position of the surface foaming adhesive structure in Chinese Publication No. CN217835326U, a single-bubble structure is adopted at this position. This single-bubble structure, as shown in the attached Figure 1 and Figure 2 of the specification, in the bending R area of the body waistline, the height of the bubble type will have a certain collapse, resulting in insufficient sealing force and sealing failure. In Figure 2 in, Figure 2 which is the installation schematic diagram of the sealing strip, it can be clearly seen that in the bending R area of the body waistline, there is a certain collapse in the single-bubble structure. In view of this, the invention proposes a new door frame sealing strip with a double-bubble structure for a split frameless door. Utility Model Content

[0005] The purpose of the present utility model is to reduce the height loss of the bubble type in the bending R area of the door frame sealing strip position and improve the sealing performance.

[0006] In order to achieve the above purpose, the present utility model provides the following basic solution:

[0007] A split frameless door double-bubble structure door frame sealing strip, comprising an extrusion part and a mounting part. The extrusion part is used to directly contact and be extruded by the door when closing the door, and the mounting part is connected to the door sheet metal stop. It is characterized in that: a bending R area dedicated to extrusion is provided on the extrusion part, and a double-bubble structure is provided inside the extrusion part at the position of the bending R area, and a support rod is provided between the double-bubble structures.

[0008] The principle and effect of this basic solution are as follows:

[0009] 1. Compared with the prior art, the structure of this device is simple and ingenious. Without changing the original basic performance of this automotive door frame sealing strip, in order to ensure the overall appearance of the extrusion part, a composite foam rubber structure is compounded on the outermost part of the extrusion part, and the extrusion part is wrapped by the composite foam rubber structure, making the extrusion part more beautiful in appearance. Moreover, there will be no line marks caused by different materials in different areas of the extrusion part, solving the problem that the traditional automotive door frame sealing strip has line marks in the area near the partition line of different materials due to different materials at the extrusion part.

[0010] 2. Compared with the prior art, a major improvement is directly made at the extrusion part. In the bending R area of the extrusion part, a double-bubble structure is directly adopted. Compared with the traditional single-bubble structure, the height loss of the bubble type is reduced. When the height loss of the bubble type becomes smaller, the deformation amount of the bending R area of the extrusion part is reduced, thereby improving the sealing performance.

[0011] 3. Compared with the prior art, in the treatment of the double-bubble structure, a mutually independent double-bubble structure is not adopted. Although the independent double-bubble structure can reduce the deformation amount of the bending R area of the extrusion part, there is a small problem, that is, under long-term extrusion, one of the bubbles in the double-bubble structure will shift, which is not conducive to the double-bubble structure to play its own advantages. Therefore, in this case, a support rod is designed under the double-bubble structure to strengthen the relative position fixation of the two bubbles in the double-bubble structure, thereby ensuring the effect of the double-bubble structure.

[0012] Further, the cross-section of the mounting part is a U-shaped structure. The mounting part includes a support skeleton and a sealing glue layer that wraps the support skeleton. The support skeleton is made of PP material, and the extrusion part is connected to the mounting part.

[0013] Further, a plurality of claws are provided on the mounting part. The claws are made of dense and solid glue, which is used to improve the clamping force between the door frame strip and the sheet metal stop, and improve the reliability of the connection of the door frame strip.

[0014] Further, a composite foam rubber structure is provided on the outer periphery of the bending R area. The composite foam rubber structure includes a connection layer, a fiber layer, an isolation layer, and an external foam rubber layer arranged from the inside to the outside. The connection layer is a foam structure and is used to connect the extrusion part.

[0015] Further, the double-bubble structure is a first bubble and a second bubble. The size of the first bubble is larger than that of the second bubble, and the first bubble is arranged close to the bending R area. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It shows an installation schematic diagram of a door frame sealing strip with a double-bubble structure for a split frameless door proposed in an embodiment of the present application;

[0018] Figure 2 It shows a schematic plan view of the installation of a door frame sealing strip with a double-bubble structure for a split frameless door proposed in an embodiment of the present application;

[0019] Figure 3 It shows a schematic structural diagram of an improved structure of a door frame sealing strip with a double-bubble structure for a split frameless door proposed in an embodiment of the present application. Detailed Embodiments

[0020] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined utility model purpose, the following, in combination with the accompanying drawings and preferred embodiments, will detail the specific embodiments, structures, features, and effects according to the present invention.

[0021] The reference numerals in the drawings of the specification include: extrusion part 1, double-bubble structure 2, support rod 3, installation part 4, support skeleton 5, and claw 6.

[0022] Embodiments are as Figure 1 、 Figure 2 and Figure 3 shown:

[0023] A door frame sealing strip with a double-bubble structure for a split frameless door includes an extrusion part 1 and an installation part 4. The extrusion part 1 is used to directly contact and be extruded by the door when closing the door, and the installation part 4 is connected to the door sheet metal stop. It is characterized in that: a bending R area dedicated to extrusion is provided on the extrusion part 1, and a double-bubble structure 2 is arranged inside the extrusion part 1 at the position of the bending R area, and a support rod 3 is arranged between the double-bubble structures 2.

[0024] Specifically: a composite foaming glue structure is provided on the outer periphery of the bending R area. The composite foaming glue structure includes a connection layer, a fiber layer, an isolation layer, and an external foaming glue layer arranged from the inside to the outside. The connection layer is a foam structure and is used to connect the extrusion part 1.

[0025] The composite foam glue structure includes a connection layer, a fiber layer, an isolation layer, and an external foam glue layer arranged from the inside out. The connection layer is a foam structure for connecting the extrusion part 1. A connection glue is provided at the connection between the connection layer and the surface foam glue structure and the dense glue structure. The connection layer serves as the base layer to strengthen the connection with the extrusion part 1. The fiber layer includes several fiber cloths and adhesives for fixing the fiber cloths. The fiber layer and the connection layer are connected through the adhesives. The purpose of setting the fiber layer is to utilize the ductility of the fiber layer to strengthen the toughness of the composite foam glue structure, making it not easily deformed and improving the reliability of the connection. The isolation layer is essentially a coating layer used to separate the outermost external foam glue layer from the internal connection layer and fiber layer. On the one hand, the isolation layer makes the external foam glue layer independent into blocks. On the other hand, by using coating layers with different functions, the composite foam glue structure has certain waterproof or fireproof properties. Fourthly, the external foam glue layer includes a polyurethane prepolymer, a foaming agent, a catalyst, and a crosslinking agent. The external foam glue layer is evenly applied on the outermost part and is a moisture-curing polyurethane elastic sealing foam material. In this embodiment, tube-foaming glue is used, that is, a tube device is used to spray the external foam glue layer. The external foam glue layer can be used to wrap the extrusion part 1, making the appearance of the extrusion part 1 more beautiful. Moreover, even if the extrusion part 1 is damaged, the external foam glue layer can protect it, and the damage to the extrusion part 1 will basically not have a great impact on the entire device.

[0026] In terms of the overall structure, there is no difference from the traditional structure. The cross-section of the installation part 4 is a U-shaped structure. The installation part 4 includes a support skeleton 5 and a sealing glue layer that wraps the support skeleton 5. The support skeleton 5 is made of PP material. The extrusion part 1 is connected to the installation part 4. Several clamping claws 6 are provided on the installation part 4. The material of the clamping claws 6 is dense and solid glue, which is used to improve the clamping force between the door frame strip and the sheet metal stop, and improve the reliability of the connection of the door frame strip.

[0027] The core point of this case is that on the double-bubble structure 2, a major improvement is made at the position of the extrusion part 1. In the bending R area of the extrusion part 1, the double-bubble structure 2 is directly adopted. Compared with the traditional single-bubble structure, the height loss of the bubble type is reduced in the double-bubble structure 2. When the height loss of the bubble type becomes smaller, the deformation amount in the bending R area of the extrusion part 1 is reduced, thereby improving the sealing performance.

[0028] The purpose of the present utility model is to reduce the height loss of the bubble type in the bending R area of the door frame sealing strip and improve the sealing performance.

[0029] Moreover, the double-bubble structure 2 is the first bubble and the second bubble. The size of the first bubble is larger than that of the second bubble. The first bubble is arranged close to the bending R area. And in order to prevent the positions between the first bubble and the second bubble from changing, a support rod 3 is also provided. The support rod 3 is used to strengthen the relative position fixation of the two bubbles in the double-bubble structure 2, thereby ensuring the effect of the double-bubble structure 2.

[0030] The purpose of the present utility model is to reduce the height loss of the bubble type in the bending R area of the door frame sealing strip position and improve the sealing performance.

[0031] The above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to equivalent embodiments of equivalent changes within the scope of the technical solution of the present utility model by using the disclosed technical content above. However, as long as it does not depart from the content of the technical solution of the present utility model, any brief modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A double-bubble door frame sealing strip for split frameless car doors, comprising an extrusion portion and a mounting portion, wherein the extrusion portion is used to directly contact and be extruded with the car door when the door is closed, and the mounting portion is connected to the door sheet metal stop, characterized in that: The extrusion part is provided with a bending R area dedicated to extrusion, a double bubble structure is provided in the extrusion part at the position of the bending R area, and support rods are provided between the double bubble structures.

2. A double-bubble door frame sealing strip for split frameless vehicle doors according to claim 1, characterized in that: The cross section of the mounting portion is a U-shaped structure. The mounting portion includes a supporting frame and a sealing adhesive layer wrapping the supporting frame. The supporting frame is made of PP material. The extrusion portion is connected to the mounting portion.

3. The double-bubble door frame sealing strip for split frameless vehicle doors according to claim 2, characterized in that: The mounting portion is provided with a plurality of clamping claws, which are made of dense and compact glue and are used to improve the clamping force between the door frame strip and the sheet metal stop, thereby improving the reliability of the connection between the door frame strip.

4. A double-bubble door frame sealing strip for split frameless vehicle doors according to any one of claims 1, 2 or 3, characterized in that: A composite foam structure is provided on the periphery of the bending R region, and the composite foam structure includes a connecting layer, a fiber layer, an isolation layer and an external foam layer arranged from the inside to the outside, and the connecting layer is a foam structure for connecting the extrusion part.

5. The double-bubble door frame sealing strip for split frameless vehicle doors according to claim 1, characterized in that: The double bubble structure includes a first bubble and a second bubble, the size of the first bubble is larger than the size of the second bubble, and the first bubble is disposed close to the bending R region.

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