Automobile rear ventilation sound insulation board

Abstract

The utility model is suitable for the technical field of automobile sound insulation plates, and provides an automobile rear ventilation sound insulation plate which comprises a ventilation sound insulation plate body. The air inlet is formed in the outer side wall of the ventilation sound insulation board body; the silencing box is fixed to the side, close to the air inlet, of the inner side wall of the ventilation sound insulation board body through bolts; the air inlet hole is formed in the outer wall of one side of the silencing box; the air outlet hole is formed in the outer wall of the other side of the silencing box; the ventilation pipe is arranged at the position, close to the position between the air inlet hole and the air outlet hole, in the silencing box; the release hole is formed in the outer side wall of the ventilation pipe; the inner convex sealing ribs integrally formed on the inner side wall of the outer edge can block the flow direction of the foaming material, so that the foaming material filled in the ventilation sound insulation board body is prevented from leaking out, the foaming material is uniformly filled, the sound insulation effect is further improved, and through the arrangement of the silencing box, ventilated air entering an automobile can be subjected to sound insulation and noise reduction.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile sound insulation boards, and particularly relates to an automobile rear ventilation sound insulation board. Background Art

[0002] In the field of automobiles, sound insulation boards are commonly used to block the cross-sections of certain key positions of the automobile, so as to block the flow of air in the side wall sound cavity and improve the airtightness of the vehicle body.

[0003] The existing automobile rear ventilation uses a sound insulation board to reduce the noise generated by air flow. Most of the sound insulation boards adopt a structure with a plastic bracket in the middle and a foaming material at the edge. Since the outer edge of the sound insulation board skeleton is mostly an open structure, the foaming material is likely to leak out, affecting the sound insulation effect. It is difficult for the sound insulation board to effectively absorb the noise generated by air flow, resulting in a large noise problem when the rear ventilation is turned on.

[0004] Therefore, an automobile rear ventilation sound insulation board is proposed. Summary of the Utility Model

[0005] The utility model provides an automobile rear ventilation sound insulation board, aiming to solve the above problems.

[0006] The utility model is realized as follows: an automobile rear ventilation sound insulation board, comprising: a ventilation sound insulation board body; an air inlet opened on the outer side wall of the ventilation sound insulation board body; a sound absorption box fixed to the inner side wall of the ventilation sound insulation board body near the air inlet side by bolts; an air inlet hole opened on one outer side wall of the sound absorption box; an air outlet hole opened on the other outer side wall of the sound absorption box; a ventilation pipe arranged at a position between the air inlet hole and the air outlet hole inside the sound absorption box; a release hole opened on the outer side wall of the ventilation pipe; a sound absorption outer cotton covering the inner side wall of the sound absorption box; an installation hole opened on the outer side wall of the ventilation sound insulation board body; and an outer edge arranged on the inner side wall of the ventilation sound insulation board body; an inner convex sealing rib integrally formed on the inner side wall of the outer edge

[0007] Preferably, the centers of the air inlet, the air inlet hole, the air outlet hole and the ventilation pipe are on the same axis, and the air inlet is communicated with the air inlet hole, and both the air inlet hole and the air outlet hole are communicated with the ventilation pipe.

[0008] Preferably, a sound absorption cavity is arranged at a position near the inner side of the sound absorption outer cotton inside the sound absorption box.

[0009] Preferably, the cross-section of the sound absorption outer cotton is a rectangular frame structure, and the ventilation pipe penetrates through the sound absorption outer cotton.

[0010] Preferably, the cross-section of the inner convex sealing rib is semicircular, and the inner convex sealing rib and the outer edge have the same line trend.

[0011] Preferably, there are four installation holes in total, and the four installation holes are symmetrically arranged on the outer side wall of the ventilation and sound insulation board body.

[0012] Compared with the prior art, the embodiments of the present application mainly have the following beneficial effects:

[0013] Through the inner convex sealing rib integrally formed on the inner side wall of the outer edge, the flow direction of the foaming material can be blocked, thereby avoiding the leakage of the foaming material filled inside the ventilation and sound insulation board body, ensuring the uniform filling of the foaming material, and further improving the sound insulation effect. Through the setting of the sound absorption box, the air ventilated into the vehicle can be sound-insulated and noise-reduced, the air pressure release during the air flow process can be realized, the turbulent flow sound absorption and physical sound absorption can be realized, and the sound insulation effect of the ventilation and sound insulation board body can be greatly improved. Description of the Drawings

[0014] Figure 1 is the structural schematic diagram of the present utility model;

[0015] Figure 2 is the schematic diagram of the cooperation between the ventilation and sound insulation board body and the sound absorption box of the present utility model;

[0016] Figure 3 is the structural schematic diagram of the sound absorption box of the present utility model;

[0017] Figure 4 is the exploded schematic diagram of the sound absorption box of the present utility model;

[0018] Figure 5 is the present utility model Figure 2 The enlarged view at A in.

[0019] In the figure: 1. Ventilation and sound insulation board body; 2. Air inlet; 3. Sound absorption box; 4. Air inlet hole; 5. Air outlet hole; 6. Ventilation pipe; 7. Release hole; 8. Sound absorption outer cotton; 9. Installation hole; 10. Outer edge; 11. Inner convex sealing rib. Detailed Embodiments

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used in the description of the present application in the specification are only for the purpose of describing specific embodiments, and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above description of the drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this application or the above drawings are used to distinguish different objects, not to describe a specific order.

[0021] References to "embodiments" in this specification mean that specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears in various places in the specification and is not necessarily referring to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0022] An embodiment of the present utility model provides an automotive rear ventilation and sound insulation panel, as Figures 1-5 shown, which includes a ventilation and sound insulation panel body 1. An air inlet 2 is provided on one outer wall of the ventilation and sound insulation panel body 1. And a sound absorption box 3 is fixedly connected by bolts at a position on one inner wall of the ventilation and sound insulation panel body 1 close to the air inlet 2. An air inlet hole 4 is provided on one outer wall of the sound absorption box 3 close to the air inlet 2. And an air outlet hole 5 is provided on the other outer wall of the sound absorption box 3. A ventilation pipe 6 is welded on the inner wall of the sound absorption box 3 at a position between the air inlet hole 4 and the air outlet hole 5. A release hole 7 is provided on one outer wall of the ventilation pipe 6. A sound absorption outer cotton 8 is adhesively fixed on the inner wall of the sound absorption box 3. An installation hole 9 is provided on one outer wall of the ventilation and sound insulation panel body 1 adjacent to the air inlet 2. There are four installation holes 9 in total, and the four installation holes 9 are symmetrically arranged on the outer wall of the ventilation and sound insulation panel body 1. An outer edge 10 is provided on the outer wall of the ventilation and sound insulation panel body 1 far from the air inlet 2. An inner convex sealing rib 11 is integrally formed on the inner wall of the outer edge 10. The cross-section of the inner convex sealing rib 11 is semicircular, and the inner convex sealing rib 11 and the outer edge 10 have the same line trend.

[0023] It should be noted that since most of the existing automotive rear ventilation and sound insulation panels adopt a structure with a plastic bracket in the middle and a foaming material at the edge, and since the outer edge of the sound insulation panel's skeleton is mostly an open structure, the foaming material is likely to leak out, affecting the sound insulation effect. The noise generated by air flow is difficult to be effectively absorbed by the sound insulation panel, resulting in a problem of high noise when the rear ventilation is turned on. In this embodiment, the inner convex sealing rib 11 integrally formed on the inner wall of the outer edge 10 can block the flow direction of the foaming material, thereby preventing the foaming material filled inside the ventilation and sound insulation panel body 1 from leaking out, ensuring the uniform filling of the foaming material, and further improving the sound insulation effect. Through the setting of the sound absorption box 3, the air entering the automotive rear ventilation can be sound-insulated and noise-reduced, realizing the air pressure release during the air flow process, achieving turbulent flow noise reduction and physical sound absorption, and greatly improving the sound insulation effect of the ventilation and sound insulation panel body 1.

[0024] Specifically, in this embodiment, the solution mainly includes a ventilation and sound insulation board body 1 and a sound absorption box 3. During installation, foaming material is extruded and filled into the docking installation area between the ventilation and sound insulation board body 1 and the rear ventilation of the vehicle. The foaming material is filled inside the ventilation and sound insulation board body 1. Under the sealing and blocking of the inner convex sealing rib 11, the foaming material is fully blocked at the docking installation area, ensuring the quality of the foaming material filling and improving the sound insulation effect. When air enters the ventilation pipe 6 inside the sound absorption box 3 through the air inlet 2, the release hole 7 guides the air into the sound absorption cavity. The release hole 7 on the ventilation pipe 6 releases air pressure, disturbing the flow and absorbing sound. The sound absorption outer cotton 8 further absorbs sound, greatly reducing the noise of the air entering the ventilation and sound insulation board body 1, achieving the purpose of sound insulation and noise reduction. Finally, the air is guided to the rear row space of the vehicle through the grille installed inside the ventilation and sound insulation board body 1.

[0025] In a further preferred embodiment of the present utility model, as Figures 1-4 shown, the centers of the air inlet 2, the air inlet hole 4, the air outlet hole 5, and the ventilation pipe 6 are on the same axis, and the air inlet 2 is connected to the air inlet hole 4, and both the air inlet hole 4 and the air outlet hole 5 are connected to the ventilation pipe 6.

[0026] In this embodiment, through the setting of the same axis, air can smoothly pass through the air inlet 2, the air inlet hole 4, the ventilation pipe 6, and the air outlet hole 5 in sequence.

[0027] In a further preferred embodiment of the present utility model, as Figures 3-4 shown, a sound absorption cavity is provided inside the sound absorption box 3 at a position close to the inner side of the sound absorption outer cotton 8. The cross-section of the sound absorption outer cotton 8 is a rectangular frame structure, and the ventilation pipe 6 passes through the sound absorption outer cotton 8.

[0028] In this embodiment, through the setting of the sound absorption cavity, air pressure can be released, disturbing the flow and absorbing sound.

[0029] It should be noted that for the foregoing embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that the present utility model is not limited by the described action sequence, because according to the present utility model, certain steps may be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to the present utility model.

[0030] In several embodiments provided by the present application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the above-mentioned units may have other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or communication connection between each other can be through some interfaces. The indirect coupling or communication connection between devices or units can be in the form of telecommunications or other forms.

[0031] The units described above as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0032] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting the protection scope of the invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art can still, without conflict and without creative efforts, combine, add, delete or make other adjustments to the features in the embodiments of the present invention according to the situation, so as to obtain different technical solutions that essentially do not deviate from the concept of the present invention. These technical solutions also belong to the scope of protection of the present invention.

Claims

1. An automotive rear ventilation and sound insulation panel, characterized in that, Comprising: A ventilation and sound insulation board body (1); An air inlet (2) opened on the outer side wall of the ventilation and sound insulation board body (1); And A silencing box (3) fixed to the inner side wall of the ventilation and sound insulation board body (1) near the air inlet (2) by bolts; An air inlet hole (4) opened on one outer side wall of the silencing box (3); and An air outlet hole (5) opened on the other outer side wall of the silencing box (3); A ventilation pipe (6) arranged inside the silencing box (3) at a position between the air inlet hole (4) and the air outlet hole (5); A release hole (7) opened on the outer side wall of the ventilation pipe (6); A sound-absorbing outer cotton wrap (8) covering the inner side wall of the silencing box (3); An installation hole (9) opened on the outer side wall of the ventilation and sound insulation board body (1); and An outer edge (10) arranged on the inner side wall of the ventilation and sound insulation board body (1); An inwardly convex sealing rib (11) integrally formed on the inner side wall of the outer edge (10).

2. The automotive rear ventilation and sound insulation panel according to claim 1, wherein, The centers of the air inlet (2), the air inlet hole (4), the air outlet hole (5) and the ventilation pipe (6) are on the same axis, and the air inlet (2) is communicated with the air inlet hole (4), and both the air inlet hole (4) and the air outlet hole (5) are communicated with the ventilation pipe (6).

3. The automotive rear ventilation and sound insulation panel according to claim 1, characterized in that, A sound-absorbing cavity is arranged inside the silencing box (3) at a position near the inner side of the sound-absorbing outer cotton wrap (8).

4. The automotive rear ventilation and sound insulation panel according to claim 1, characterized in that, The cross-section of the sound-absorbing outer cotton wrap (8) is a rectangular frame structure, and the ventilation pipe (6) passes through the sound-absorbing outer cotton wrap (8).

5. The automotive rear ventilation and sound insulation panel according to claim 1, wherein The cross-section of the inwardly convex sealing rib (11) is semi-circular, and the line trends of the inwardly convex sealing rib (11) and the outer edge (10) are the same.

6. The automotive rear ventilation and sound insulation panel according to claim 1, wherein A total of four installation holes (9) are provided, and the four installation holes (9) are symmetrically opened on the outer side wall of the ventilation and sound insulation board body (1).

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