Automobile rear door structure with high noise reduction performance

Abstract

This utility model discloses a high-noise-reduction automotive rear door structure, comprising an inner door panel consisting of a door panel and a side panel, which together form a cavity for accommodating components such as sound-absorbing cotton. The side panel is divided into a first part and a second part. The first part is L-shaped and divided into a long end and a short end. Several ribs are spaced circumferentially at intervals on the short end, and a positioning groove for placing a sound-absorbing pad is formed between adjacent ribs. The grid-like support formed by the ribs effectively suppresses door panel vibration. Secondly, the precise guiding design of the positioning groove ensures the rapid and accurate positioning and installation of the sound-absorbing pad. Finally, the sound-absorbing pad and the sound-absorbing cotton filling the cavity together constitute a multi-layered composite sound barrier. Through the combined application of materials of different densities, a synergistic blocking effect on broadband noise is achieved.

Description

Technical Field

[0001] This utility model relates to the field of automotive rear door technology, and in particular to an automotive rear door structure with high noise reduction performance. Background Technology

[0002] With the development of the automotive industry, consumers have increasingly higher demands for vehicle comfort, especially in terms of noise control inside the vehicle. As an important part of the car body, the sound insulation performance of car doors directly affects the quietness of the cabin. Traditional car rear door structures typically consist of a door panel and side panels, with sound-absorbing cotton filling the interior to absorb noise.

[0003] However, the existing door structure has an unreasonable design of the fit between the side panel and the door panel, which may lead to improper installation of sound insulation materials, affecting sealing and noise reduction performance. Utility Model Content

[0004] In view of this, the present invention addresses the deficiencies of the existing technology, and its main objective is to provide a car rear door structure with high noise reduction performance, which solves the above-mentioned problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a car rear door structure with high noise reduction performance, comprising an inner door panel composed of a door panel and a side panel, which together form a cavity for accommodating components such as sound insulation cotton. The side panel is divided into a first part and a second part, wherein the first part is L-shaped and divided into a long end and a short end. Several ribs are arranged circumferentially at intervals on the short end, and a positioning groove for placing a sound insulation pad is formed between adjacent ribs.

[0006] Furthermore, an adhesive positioning part can be placed on the top of the rib.

[0007] Furthermore, the cavity is equipped with multiple snap-fit ​​components that extend outwards to the door panel.

[0008] Furthermore, the sound insulation cotton has openings for the card connector to pass through.

[0009] Furthermore, a cup holder is provided on the lower part of the side of the door panel corresponding to the cabin, and the back of the cup holder is raised and parallel to the end of the side panel.

[0010] Furthermore, the sound insulation material also has openings corresponding to the door armrests.

[0011] Furthermore, the side wall of the rib plate is provided with an insertion port, and the side wall of the sound insulation pad is provided with a protrusion that can be inserted into the insertion port.

[0012] Furthermore, the upper end of the socket is provided with an extension opening, which extends out from the top of the rib plate, and a matching extrusion piece is inserted into the extension opening.

[0013] Furthermore, the top of the extrusion extends to the outside of the inlet end of the extension port, and the cross-section of the extension port is trapezoidal.

[0014] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution, the grid-like support formed by the ribs effectively suppresses the vibration of the door panel; secondly, the precise guiding design of the positioning groove ensures the rapid and accurate positioning and installation of the sound insulation pad; finally, the sound insulation pad and the sound insulation cotton filled in the cavity together constitute a multi-layer composite sound insulation barrier. Through the combined application of materials of different densities, a synergistic blocking effect on broadband noise is achieved.

[0015] To more clearly illustrate the structural features and effects of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0016] Figure 1 This is a perspective view of Embodiment 1 of this utility model.

[0017] Figure 2 This is a rear view of the door panel of Embodiment 1 of this utility model.

[0018] Figure 3 This is a side view of the door panel of Embodiment 1 of this utility model.

[0019] Figure 4 This is Embodiment 1 of the present utility model. Figure 2 Enlarged view of point A.

[0020] Explanation of reference numerals in the attached diagram: Door panel 10, water cup storage slot 11; Side panel 20, first part 21, long end 211, short end 212, rib 213, insertion port 2131, extension port 2132, extrusion 2133, positioning groove 214, positioning part 215, second part 22; Sound insulation cotton 30, opening 31, opening 32; Cavity 40, Connector 41; Sound insulation pad 50, bump 51. Detailed Implementation

[0021] Please refer to Figure 1-4As shown, this invention illustrates the specific structure of a preferred first embodiment of the present invention, which is a high-noise-reduction automotive rear door structure. It includes an inner door panel composed of a door panel 10 and a side panel 20, which together form a cavity 40 to accommodate components such as sound-absorbing cotton 30. The side panel 20 is divided into a first part 21 and a second part 22. The first part 21 is L-shaped and divided into a long end 211 and a short end 212. The short end 212 is circumferentially spaced with several ribs 213, and a positioning groove 214 is formed between adjacent ribs 213 for placing the sound-absorbing pad 50. The grid-like support formed by the ribs 213 effectively suppresses door panel vibration. Secondly, the precise guiding design of the positioning groove 214 ensures the rapid and accurate positioning and installation of the sound-absorbing pad 50. Finally, the sound-absorbing pad 50 and the sound-absorbing cotton 30 filling the cavity 40 together constitute a multi-layered composite sound barrier. Through the combined application of materials of different densities, a synergistic blocking effect against broadband noise is achieved.

[0022] For example, an adhesive positioning part 215 may be placed on the top of the rib 213. The positioning part 215 is preferably a high-adhesion special adhesive tape, which forms a solid connection with the top of the rib 213 through its adhesive properties, so that the adhesive surface of the positioning part 215 forms a reliable adhesion with the upper surface of the sound insulation pad 50, effectively preventing the sound insulation pad 50 from loosening from the positioning groove 214 due to vehicle driving vibration.

[0023] For example, the cavity 40 is provided with a plurality of snap-fit ​​members 41 extending outward to the door panel.

[0024] The sound insulation cotton 30 has an opening 31 for the fastener 41 to pass through. After the inner door panel and the outer door panel are spliced ​​together, the fastener 41 forms a three-dimensional support structure, so that the sound insulation cotton 30 is reliably fixed in the X / Y / Z dimensions. The assembly pressure of the outer door panel is evenly transmitted through the fastener 41, which promotes the sound insulation cotton 30 to form a tight fit with the back of the door panel 10 without gaps, thereby improving the sound insulation of the mid-low frequency range.

[0025] For example, a cup holder 11 is provided on the lower part of the side of the door panel 10 corresponding to the cabin, and the back of the cup holder 11 is raised and parallel to the end of the side panel 20. The sound insulation cotton 30 is laid on the back of the cup holder 11 to form a "high-low" gradient structure, so that after the inner door panel and the outer door panel are spliced, the sound insulation cotton 30 will undergo gradual deformation when the door panel is closed, thereby improving the sound insulation effect.

[0026] For example, the sound insulation cotton 30 is also provided with an opening 32 corresponding to the door armrest. The opening 32 is for wiring or electrical equipment to pass through the sound insulation cotton 30 for easy installation.

[0027] For example, the side wall of the rib plate 213 is provided with an insertion port 2131, and the side wall of the sound insulation pad 50 is provided with a protrusion 51 that is inserted into the insertion port 2131. The insertion of the sound insulation pad 50 into the insertion port 2131 by the protrusion 51 provided thereon further increases the stability of the sound insulation pad 50 when it is installed in the positioning groove 214.

[0028] It should be noted that the interlocking protrusions 51 are all triangular, with one located at the top and the other at the bottom.

[0029] For example, the upper end of the socket 2131 is provided with an extension port 2132, which extends out from the top of the rib 213, and a matching extrusion member 2133 is inserted into the extension port 2132.

[0030] The top of the extrusion member 2133 extends to the outside of the inlet end of the extension port 2132, and the cross-section of the extension port 2132 is trapezoidal. When the inner door panel and the outer door panel are spliced ​​together, the extrusion member 2133 is moved into the extension port 2132 due to the pressure of the outer door panel on the extrusion member 2133, and abuts against the protrusion 51 in the insertion port 2131, thereby fixing the sound insulation pad 50.

[0031] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A high-noise-reduction automotive rear door structure, comprising an inner door panel consisting of a door panel (10) and a side panel (20), which together form a cavity (40) for accommodating components such as sound insulation cotton (30), characterized in that: The side panel (20) is divided into a first part (21) and a second part (22). The first part (21) is L-shaped and divided into a long end (211) and a short end (212). The short end (212) is provided with several ribs (213) spaced apart in the circumferential direction. A positioning groove (214) for placing a sound insulation pad (50) is formed between two adjacent ribs (213).

2. The automotive rear door structure with high noise reduction performance according to claim 1, characterized in that: An adhesive positioning part (215) may be placed on the top of the rib (213).

3. The automotive rear door structure with high noise reduction performance according to claim 1, characterized in that: The cavity (40) is provided with a plurality of snap-fit ​​parts (41) extending outward to the door panel.

4. The automotive rear door structure with high noise reduction performance according to claim 3, characterized in that: The sound insulation cotton (30) has an opening (31) through which the card connector (41) passes.

5. A high-noise-reduction automotive rear door structure according to claim 1 or 4, characterized in that: The lower part of the side of the door panel (10) corresponding to the cabin is provided with a cup holder (11), and the back of the cup holder (11) is raised and parallel to the end of the side panel (20).

6. The automotive rear door structure with high noise reduction performance according to claim 5, characterized in that: The sound insulation cotton (30) is also provided with an opening (32) corresponding to the door armrest.

7. The automotive rear door structure with high noise reduction performance according to claim 1, characterized in that: The rib (213) has an insertion port (2131) on its side wall, and the sound insulation pad (50) has a protrusion (51) on its side wall that can be inserted into the insertion port (2131).

8. The automotive rear door structure with high noise reduction performance according to claim 7, characterized in that: The upper end of the socket (2131) is provided with an extension port (2132), which extends out from the top of the rib (213), and a matching extrusion member (2133) is inserted into the extension port (2132).

9. A high-noise-reduction automotive rear door structure according to claim 8, characterized in that: The top of the extruder (2133) extends to the outside of the inlet end of the extension port (2132), and the cross section of the extension port (2132) is trapezoidal.

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