CN219257244U - Expansion rubber block - Google Patents
Expansion rubber block Download PDFInfo
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- CN219257244U CN219257244U CN202222597997.6U CN202222597997U CN219257244U CN 219257244 U CN219257244 U CN 219257244U CN 202222597997 U CN202222597997 U CN 202222597997U CN 219257244 U CN219257244 U CN 219257244U
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- expansion
- rubber block
- cavity
- expansion rubber
- metal plate
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Abstract
The utility model provides an expansion rubber block, which comprises the following components: a carcass and an intumescent material. The framework and the expansion material are secondarily injection-molded into a whole to form the expansion rubber block; the shape of the framework corresponds to the shape of the cavity, the cavity is formed by surrounding a first metal plate and a second metal plate, and the expansion rubber block is filled in the cavity after being baked and expanded at high temperature; the framework is provided with a first claw which is clamped and positioned on the first metal plate; the protruding part of the expansion rubber block is provided with a convex hull entity structure, and the convex hull entity structure consists of expansion rubber.
Description
Technical Field
The utility model relates to the technical field of cavity sealing, in particular to an expansion rubber block.
Background
Due to the special structural design of the automobile body, after the automobile body is welded, the automobile body has a cavity structure, and due to uneven cavity and large pipe resistance, vortex is formed in the cavity wall when high-speed airflow rubs with a cavity obstacle, so that turbulent airflow noise is generated; the turbulent airflow can cause resonance of the sheet metal part, so that cavity sheet metal resonance noise is generated; meanwhile, the high-speed airflow field also plays a role in transmitting noise (such as engine noise, tyre noise and the like) outside the vehicle. Therefore, the air flow in the cavity must be blocked to suppress wind noise, and a common method is to block the cavity structure by adopting a cavity filling and sealing technology to prevent moisture and dirt from entering. Since these cavities also propagate air noise in the form of uncomfortable driving noise and wind noise, these sealing measures can also be used to reduce noise and thereby improve ride comfort in the vehicle.
When the automobile body structure is designed, the high-temperature baking type expansion rubber block made of EVA materials is adopted to ensure filling and sealing of the connecting cavities of the A/B/C columns and the threshold, block the connecting channels inside and outside the automobile, and reduce noise and improve NVH performance of the white automobile body. Meanwhile, the filling of the expansion rubber blocks can isolate the free entry and exit of the gas outside the vehicle inside the vehicle through the channel connected with the A/B/C column and the threshold, so that the good comfort performance of the air conditioning system inside the vehicle is ensured.
In practical application, in order to ensure that the installation matching gap between the rubber block and the metal plate is always reserved by 2-3 mm, the EVA foaming material in the sharp corner area of the expansion rubber block is always thinner and smaller, the foaming filling volume of the sharp corner of the rubber block after high-temperature baking is limited, and the situation of non-tight blocking of the corner of the metal plate is caused, and holes are formed.
Therefore, there is a need for an expansion rubber block that promotes the plugging of the corners of sheet metal.
Disclosure of Invention
In order to solve the problems in the prior art, the utility model redesigns the structure of the bulge entity (square or sphere) at the sharp corner of the expansion rubber block according to the practical problem cases, and the end head of the expansion rubber block is of the square or sphere structure, so that the sufficient glue quantity of the sharp corner of the expansion rubber block is ensured, and the problem of non-tight blocking of the corner of the sheet metal is well solved through practical application.
The utility model provides an expansion rubber block for improving the plugging property of a sheet metal corner, which comprises the following components:
the framework and the expansion material are formed into a whole through secondary injection molding, so that the expansion rubber block is formed;
the shape of the framework corresponds to the shape of the cavity, the cavity is formed by surrounding a first metal plate and a second metal plate, and the expansion rubber block is filled in the cavity after being baked and expanded at high temperature;
the framework is provided with a first claw which is clamped and positioned on the first metal plate;
the protruding part of the expansion rubber block is provided with a convex hull entity structure, and the convex hull entity structure consists of expansion rubber.
In one embodiment, the convex hull solid structure is a cube.
In one embodiment, the convex hull solid structure is a sphere.
In one embodiment, the expansion gum comprises a high temperature foamable expansion EVA material.
In one embodiment, the protrusion of the swelling glue block is a corner portion of the swelling glue block.
In one embodiment, the protrusion of the expansion rubber block corresponds to a lap corner region of the first sheet metal and the second sheet metal.
In one embodiment, the framework is further provided with a second claw, and the clamping connection is positioned on the first sheet metal.
In one embodiment, the skeleton comprises a high temperature resistant material.
The utility model designs the protruding part (sharp corner and corner part) of the expansion rubber block into an omnibearing convex hull solid structure, ensures that the sharp corner has enough rubber amount, fully fills the overlapping corner area of the metal plate after baking and foaming, and well avoids the occurrence of holes. The utility model has simple and practical structure, has good plugging property to the corners of the sheet metal cavity, especially acute angle areas, and has quite stable sealing performance through the verification of practical vehicle types.
Drawings
The foregoing summary of the utility model, as well as the following detailed description of the utility model, will be better understood when read in conjunction with the accompanying drawings. It is to be noted that the drawings are merely examples of the claimed utility model. In the drawings, like reference numbers indicate identical or similar elements.
FIG. 1 shows a schematic diagram of an assembly of a prior art glue block and sheet metal;
FIG. 2 shows an assembled elevation view of an expanded elastomeric block structure and sheet metal in accordance with an embodiment of the present utility model; and
fig. 3 shows a perspective view of an expanded glue block structure according to an embodiment of the utility model.
Description of the reference numerals
11. Sharp corner reserved assembly gap
1. Intumescent material
2. Skeleton frame
21. Claw catch
22. Claw catch
3. Sheet metal
4. Sheet metal
Detailed Description
Further advantages and effects of the present utility model will become apparent to those skilled in the art from the disclosure of the present specification, by describing the embodiments of the present utility model with specific examples. While the description of the utility model will be presented in connection with a preferred embodiment, it is not intended to limit the inventive features to that embodiment. Rather, the purpose of the utility model described in connection with the embodiments is to cover other alternatives or modifications, which may be extended by the claims based on the utility model. The following description contains many specific details for the purpose of providing a thorough understanding of the present utility model. The utility model may be practiced without these specific details. Furthermore, some specific details are omitted from the description in order to avoid obscuring the utility model.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In addition, the terms "upper", "lower", "left", "right", "top", "bottom", "horizontal", "vertical" as used in the following description should be understood as referring to the orientation depicted in this paragraph and the associated drawings. This relative terminology is for convenience only and is not intended to be limiting of the utility model as it is described in terms of the apparatus being manufactured or operated in a particular orientation.
It will be understood that, although the terms "first," "second," "third," etc. may be used herein to describe various tubes, channels, components, regions, layers and/or sections, these components, regions, layers and/or sections should not be limited by these terms, and these terms should be used merely to distinguish between different tubes, channels, components, regions, layers and/or sections.
Due to the special structural design of the automobile body, after the automobile body is welded, the automobile body has a cavity structure, and due to uneven cavity and large pipe resistance, vortex is formed in the cavity wall when high-speed airflow rubs with a cavity obstacle, so that turbulent airflow noise is generated; the turbulent airflow can cause resonance of the sheet metal part, so that cavity sheet metal resonance noise is generated; meanwhile, the high-speed airflow field also plays a role in transmitting noise (such as engine noise, tyre noise and the like) outside the vehicle. Therefore, the air flow in the cavity must be blocked to suppress wind noise, and a common method is to block the cavity structure by adopting a cavity filling and sealing technology to prevent moisture and dirt from entering. Since these cavities also propagate air noise in the form of uncomfortable driving noise and wind noise, these sealing measures can also be used to reduce noise and thereby improve ride comfort in the vehicle.
When the automobile body structure is designed, the high-temperature baking type expansion rubber block made of EVA materials is adopted to ensure filling and sealing of the connecting cavities of the A/B/C columns and the threshold, block the connecting channels inside and outside the automobile, and reduce noise and improve NVH performance of the white automobile body. Meanwhile, the filling of the expansion rubber blocks can isolate the free entry and exit of the gas outside the vehicle inside the vehicle through the channel connected with the A/B/C column and the threshold, so that the good comfort performance of the air conditioning system inside the vehicle is ensured.
In practical application, in order to ensure that the installation matching gap between the rubber block and the metal plate is always reserved by 2-3 mm, the EVA foaming material in the sharp corner area of the expansion rubber block is always thinner and smaller, the foaming filling volume of the sharp corner of the rubber block after high-temperature baking is limited, and the situation of non-tight blocking of the corner of the metal plate is caused, and holes are formed.
In order to solve the problems in the prior art, the utility model provides a novel expansion rubber block, a convex hull entity structure is designed at the sharp corner of the expansion rubber block, the rubber quantity of the end is increased, the filling volume is obviously increased after high-temperature baking, and the problem that the original sharp corner is thinner and less in rubber material, and the volume is not filled enough after foaming is solved.
Fig. 2 shows an assembled elevation view of an expanded glue block and sheet metal according to an embodiment of the utility model.
Fig. 3 shows a perspective view of an expanded glue block structure according to an embodiment of the utility model.
Referring to fig. 2 and 3, a framework 2 and an expansion material (expansion glue) 1 are expansion glue block assemblies which are formed by two-time injection molding, the framework 2 is provided with clamping claws 21 and 22 which are clamped and positioned on a metal plate 4, and the glue block assemblies are filled in a cavity formed by the metal plate 3 and the metal plate 4 after being baked and expanded at high temperature to form a partition. The glue block is characterized in that the sharp corner part of the expansion glue 1 is designed into an omnibearing convex hull structure (sharp corner convex hull structure), the glue quantity is increased, the enough glue quantity of the sharp corners is ensured, the overlapping corner areas of the metal plate 3 and the metal plate 4 are fully filled after baking, and the occurrence of holes is avoided.
Specifically, the expansion rubber block comprises a framework and an expansion material (expansion rubber). The shape of the framework corresponds to the shape of a cavity, and the cavity is composed of a first metal plate and a second metal plate. The framework and the expansion material are integrated by secondary injection molding to form an expansion rubber block. The skeleton is provided with first jack catch, and the joint is located on the first panel beating. The expansion rubber block is baked and expanded at high temperature and then is filled in the cavity to form a partition. The protruding part of the expansion rubber block is provided with a convex hull entity structure (or called convex hull), and the convex hull entity structure is composed of expansion rubber, so that the protruding part (or sharp corner) is ensured to have enough rubber quantity, and after baking, the overlapping corner areas of the metal plate 3 and the metal plate 4 are fully filled, so that holes are avoided.
In one embodiment, the framework is further provided with a second claw, and the clamping connection is positioned on the first sheet metal.
In one embodiment, the expansion glue is composed of EVA materials which can be expanded and expanded at high temperature, and the expansion rate at 140-160 ℃ can be controlled to be 5-30 times different.
In one embodiment, the framework is composed of a high temperature resistant material that is resistant to high temperatures up to 200 ℃ without deformation.
In one embodiment, the convex hull solid structure may be a square.
In one embodiment, the convex hull solid structure may be a sphere.
In one embodiment, the protrusion is a corner portion of the swelling glue block.
In one embodiment, the protrusion corresponds to a lap corner region of the first sheet metal and the second sheet metal.
The utility model designs the protruding part (sharp corner part) of the expansion rubber block into an omnibearing convex hull entity (square body or sphere) structure, ensures that the sharp corner has enough rubber amount, fully fills the overlapping corner area of the metal plate after baking and foaming, and well avoids the occurrence of holes.
The utility model has simple and practical structure, has good plugging property to the corners of the sheet metal cavity, especially acute angle areas, and has quite stable sealing performance through the verification of practical vehicle types.
It is to be understood that the protrusion (sharp corner) of the expansion rubber block is designed into an omnibearing convex hull entity (square or sphere) expansion rubber structure, which can be applied to all the areas with corners of the rubber block, and the rubber quantity is greatly increased through the design of the full hull entity, so that the expansion volume is larger after baking, the plugging capacity is stronger, and the stability is better.
While the basic concepts have been described above, it will be apparent to those skilled in the art that the above disclosure is by way of example only and is not intended to be limiting. Although not explicitly described herein, various modifications, improvements, and adaptations of the present application may occur to one skilled in the art. Such modifications, improvements, and modifications are intended to be suggested within this application, and are therefore within the spirit and scope of the exemplary embodiments of this application.
Meanwhile, the present application uses specific words to describe embodiments of the present application. Reference to "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic is associated with at least one embodiment of the present application. Thus, it should be emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various positions in this specification are not necessarily referring to the same embodiment. Furthermore, certain features, structures, or characteristics of one or more embodiments of the present application may be combined as suitable.
Likewise, it should be noted that in order to simplify the presentation disclosed herein and thereby aid in understanding one or more inventive embodiments, various features are sometimes grouped together in a single embodiment, figure, or description thereof. This method of disclosure, however, is not intended to imply that more features than are presented in the claims are required for the subject application. Indeed, less than all of the features of a single embodiment disclosed above.
The terms and expressions which have been employed herein are used as terms of description and not of limitation. The use of these terms and expressions is not meant to exclude any equivalents of the features shown and described (or portions thereof), and it is recognized that various modifications are possible and are intended to be included within the scope of the claims. Other modifications, variations, and alternatives are also possible. Accordingly, the claims should be looked to in order to cover all such equivalents.
Also, it should be noted that while the present utility model has been described with reference to the particular embodiments presently, it will be appreciated by those skilled in the art that the above embodiments are provided for illustration only and that various equivalent changes or substitutions may be made without departing from the spirit of the utility model, and therefore, the changes and modifications to the above embodiments shall fall within the scope of the claims of the present application as long as they are within the true spirit of the utility model.
Claims (8)
1. An intumescent glue block, characterized in that it comprises:
the framework and the expansion material are formed into a whole through secondary injection molding, so that the expansion rubber block is formed;
the shape of the framework corresponds to the shape of a cavity, the cavity is formed by surrounding a first metal plate and a second metal plate, and the expansion rubber block is filled in the cavity after being baked and expanded at high temperature;
the framework is provided with a first claw which is clamped and positioned on the first metal plate;
the protruding part of the expansion rubber block is provided with a convex hull entity structure, and the convex hull entity structure consists of expansion rubber.
2. The expansion gum piece of claim 1, wherein said convex hull solid structure is a square.
3. The expansion gum piece of claim 1, wherein said convex hull solid structure is a sphere.
4. The expansion gum piece of claim 1, wherein said expansion gum comprises a high temperature foamable expansion EVA material.
5. The expansion gum piece of claim 1, wherein said protrusion is a corner portion of said expansion gum piece.
6. The expansion gum piece of claim 1, wherein the protrusion corresponds to a lap corner region of the first sheet metal and the second sheet metal.
7. The expansion gum piece of claim 1, wherein said frame further includes a second jaw, and wherein said clamping is positioned on said first sheet metal.
8. The expansion gum piece of claim 1, wherein said skeleton includes a high temperature resistant material.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202222597997.6U CN219257244U (en) | 2022-09-29 | 2022-09-29 | Expansion rubber block |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202222597997.6U CN219257244U (en) | 2022-09-29 | 2022-09-29 | Expansion rubber block |
Publications (1)
Publication Number | Publication Date |
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CN219257244U true CN219257244U (en) | 2023-06-27 |
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Family Applications (1)
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CN202222597997.6U Active CN219257244U (en) | 2022-09-29 | 2022-09-29 | Expansion rubber block |
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CN (1) | CN219257244U (en) |
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- 2022-09-29 CN CN202222597997.6U patent/CN219257244U/en active Active
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Effective date of registration: 20230815 Granted publication date: 20230627 |