Sealing rubber strip for engine compartment covering part

Abstract

The invention belongs to the technical field of automobile sealing parts, and particularly relates to an engine compartment covering part sealing rubber strip which comprises a sealing rubber strip body and a rubber strip buckle connected with the sealing rubber strip body, the whole sealing rubber strip body is in an arch shape and comprises an arch-shaped soft rubber strip and hard rubber parts at the two ends, and the rubber strip buckle is arranged in a hole between the two hard rubber parts. The arched soft rubber strip and the hard rubber parts at the two ends are integrally formed through injection molding. According to the sealing rubber strip, soft rubber and hard rubber are adopted for different parts and functional requirements respectively, the requirements of different parts for the rubber strip are met, the soft rubber ensures that the appearance quality problems of cracks, crushing and the like cannot occur between the sealing rubber strip and the bumper when the engine hood is closed, and the hard rubber ensures that the relevant gap surface difference requirement is met when the sealing rubber strip is matched with peripheral parts.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile sealing parts, and in particular relates to a sealing rubber strip for a hair compartment cover. Background Art

[0002] Automobile sealing strips can fill various gaps between components of the vehicle body, and have functions such as shock absorption, waterproofing, dustproofing, sound insulation, and decoration. They play an important role in improving the driving experience and protecting the vehicle body. Especially between the hood and the front bumper of the car, sealing strips are generally used to prevent water and dust, and improve the appearance quality of the whole vehicle.

[0003] Figure 1 The front shape of a certain car model is shown; Figure 2 for Figure 1 AA section view; Figure 3 It is a structural schematic diagram of the sealing strip of the prior art; Figure 4 The figure is a schematic diagram of the force on the sealing strip of the prior art in the sealed state. Since the sealing strip is shaped as a "C"-shaped non-closed structure, when the hood 01 is closed, the force point of the sealing strip 03 is at the sealing strip a 04. After the force is applied to a, the sealing strip b 05 will be lifted up, resulting in a "crack" defect between the sealing strip 03 and the front bumper 02, which seriously affects the appearance quality. When the actual vehicle is affected by the assembly accuracy and the gap between the hood and the bumper is too small, the force point of the sealing strip moves forward, causing the sealing strip to be "crushed" by the hood. The sealing strip is lower than the hood and the front bumper, resulting in a gap defect, which seriously affects the appearance quality. The hardness of this type of strip in the matching area with other parts does not meet the requirements, and after being subjected to pressure, it cannot meet the gap surface matching requirements with the surrounding parts. Summary of the invention

[0004] The purpose of the present invention is to provide a sealing strip for a hatch cover to ensure that no "cracks" or "leaks" will occur between the sealing strip and the front bumper when the hatch cover is closed, while meeting the different requirements of different areas for the hardness of the sealing strip to solve the problems existing in the above-mentioned background technology.

[0005] To achieve the above objectives, this application is implemented through the following technical solutions:

[0006] A sealing strip for a hair compartment cover comprises a sealing strip body and a strip buckle connected to the sealing strip body, wherein the sealing strip body is arched as a whole, comprising an arched soft strip and hard rubber parts at both ends, the strip buckle is arranged in a gap between the two hard rubber parts, and the arched soft strip and the hard rubber parts at both ends are integrally formed by injection molding.

[0007] Furthermore, the arched portion of the arched soft rubber strip that is in contact with the hood is a foamed structure, and the portion that is in contact with the front bumper is a dense structure.

[0008] Furthermore, in the sealing strip body, the outer end of the portion where the front bumper is attached is the intersection of the foaming structure and the dense structure.

[0009] Furthermore, the bending curvature of the intersection of the foamed structure and the dense structure is smaller than the bending curvature of the arched portion in contact with the hair compartment.

[0010] Furthermore, the arched soft rubber strip and the hard rubber part are connected by a connecting part, and the thickness of the connecting part is smaller than the thickness of the arched soft rubber strip and also smaller than the thickness of the hard rubber part.

[0011] Furthermore, the cross-section of the hard rubber part is wedge-shaped, and the inner width of the rubber strip buckle opening formed between the hard rubber parts at both ends is greater than the outer width.

[0012] Furthermore, a plurality of circles of anti-reverse buckles are arranged on the side wall of the rubber strip buckle.

[0013] The beneficial effects of the present invention are:

[0014] The sealing strip of the present invention uses soft glue and hard glue respectively when different parts and functional requirements are met, so as to meet the requirements of different parts for the sealing strip. The soft glue ensures that when the hood is closed, there will be no appearance quality problems such as cracks and crushing between the sealing strip and the bumper. The hard glue ensures that the relevant gap surface difference requirements are met when cooperating with the surrounding parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the front styling of a certain car model.

[0016] Figure 2 for Figure 1 AA section view.

[0017] Figure 3 It is a structural schematic diagram of a sealing strip in the prior art.

[0018] Figure 4 It is a schematic diagram of the force of the sealing strip in the sealing state of the prior art.

[0019] Figure 5 It is a schematic diagram of the structure of the sealing strip of the present invention.

[0020] Figure 6 The figure is a schematic diagram of the front shape of a certain vehicle model to which the sealing strip of the present invention is applied.

[0021] Figure 7 for Figure 6 BB cross-sectional view.

[0022] Figure 8 for Figure 6 CC cross-sectional view.

[0023] Description of reference numerals:

[0024] 01. Hood cover; 02. Front bumper; 03. Sealing strip; 04. Sealing strip at a; 05. Sealing strip at b; 1. Sealing strip body; 2. Hard rubber part; 3. Connecting part; 4. Sealing strip buckle; 5. Hood cover; 6. Front bumper; 7. 3M tape; 11. Foaming structure; 12. Dense structure; 13. Sealing strip stress point c; 14. Sealing strip at d. DETAILED DESCRIPTION

[0025] The technical solution of the present invention is described in detail below in conjunction with the accompanying drawings. The following embodiments are merely exemplary and can only be used to explain and illustrate the technical solution of the present invention, but cannot be construed as limiting the technical solution of the present invention.

[0026] like Figures 5 to 8 As shown, the present application provides a new type of sealing strip for a hair compartment cover, including a sealing strip body 1 and a strip buckle 4 connected to the sealing strip body 1. The sealing strip body 1 is arched as a whole, including an arched soft rubber strip and hard rubber parts 2 at both ends. The strip buckle 4 is arranged in the gap between the two hard rubber parts, and the arched soft rubber strip and the hard rubber parts at both ends are integrally formed by injection molding. The soft rubber mainly plays a role in waterproofing, dustproofing, and covering the seams. The two side ends need to cooperate with other parts to meet the gap surface difference requirements, so soft rubber that is easily compressed cannot be used, so hard rubber is used in this section.

[0027] In the present application, the arched portion of the arched soft rubber strip that is in contact with the hair compartment cover 5 is a foamed structure 11, and the portion that is in contact with the front bumper 6 is a dense structure 12. In the sealing strip body, the outer end of the portion in contact with the front bumper 6 is the intersection of the foamed structure 11 and the dense structure 12. The bending curvature of the intersection of the foamed structure and the dense structure is smaller than the bending curvature of the arched portion in contact with the hair compartment.

[0028] In the present application, the arched soft rubber strip is connected to the hard rubber part 2 by a connecting part 3, and the thickness of the connecting part 3 is smaller than the thickness of the arched soft rubber strip and also smaller than the thickness of the hard rubber part. The setting of the connecting part facilitates the excessive force on the part connected with the rubber strip buckle when the sealing rubber strip is deformed, so as to ensure that the main body of the sealing colloid is stable.

[0029] In the present application, the cross section of the hard rubber part 2 is wedge-shaped, and the inner width of the rubber strip buckle opening formed between the hard rubber parts at both ends is greater than the outer width. Multiple circles of anti-reverse buckles are provided on the side wall of the rubber strip buckle 4. They are used to prevent the sealing rubber strip from being disengaged from the rubber strip buckle.

[0030] like Figure 7As shown, when the hood 5 is closed, the sealing strip is subjected to force at point c 13. Since the sealing strip is a closed arch structure, the direction of the force component of the sealing strip at the contact point is in the X direction and the negative Z direction. The sealing strip at point d 14 will be tightly attached to the bumper without any crack defect.

[0031] like Figure 8 As shown, the arched part above the sealing strip that contacts the hood is a foamed structure, which is conducive to deformation, and the part below that fits the front bumper is a dense structure that is conducive to sealing. When the gap between the hood and the bumper is too small due to the assembly accuracy, the force point of the sealing strip moves forward. Since the sealing strip is a closed arched structure, the sealing strip d 14 will still be subjected to force in the X direction and the negative Z direction, and will still be close to the bumper without cracks or crushing. A 3M tape 7 is provided between the bottom of the sealing strip and the front bumper for fixing.

[0032] The above are preferred implementation modes of the present invention. The above show and describe the basic principles of the present invention and the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for illustrating the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements shall fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A sealing strip for a cabin cover, characterized in that: It includes a sealing strip body and a strip buckle connected to the sealing strip body. The sealing strip body is arched as a whole, including an arched soft strip and hard rubber parts at both ends. The strip buckle is arranged in the gap between the two hard rubber parts. The arched soft strip and the hard rubber parts at both ends are integrally formed by injection molding.

2. The sealing strip for the hair compartment cover according to claim 1, characterized in that: The arched portion of the arched soft rubber strip that is in contact with the hood is a foamed structure, and the portion that is in contact with the front bumper is a dense structure.

3. The sealing strip for the hair compartment cover according to claim 2, characterized in that: In the sealing strip body, the outer end where the front bumper is attached is the intersection of the foaming structure and the dense structure.

4. The sealing strip for the cabin cover according to claim 3, characterized in that: The bending curvature of the intersection of the foamed structure and the dense structure is smaller than the bending curvature of the arched part in contact with the hair compartment.

5. The sealing strip for the hair compartment cover according to claim 1, characterized in that: The arched soft rubber strip and the hard rubber part are connected via a connecting part, and the thickness of the connecting part is smaller than the thickness of the arched soft rubber strip and also smaller than the thickness of the hard rubber part.

6. The sealing strip for the hair compartment cover according to claim 1, characterized in that: The cross section of the hard rubber part is wedge-shaped, and the inner width of the rubber strip buckle opening formed between the hard rubber parts at both ends is greater than the outer width.

7. The sealing strip for the hair compartment cover according to claim 1, characterized in that: A plurality of circles of anti-reverse buckles are arranged on the side wall of the rubber strip buckle.

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