Exhaust sound insulation cover, vehicle body and vehicle

Abstract

The exhaust sound insulation cover comprises a cover body used for covering an exhaust hole, the cover body is provided with a first opening, the first opening is opened towards the bottom of a vehicle, and a sound absorption layer is arranged on the inner wall of the cover body. The invention further discloses a vehicle body and a vehicle. The exhaust function can be achieved, noise transmitted into a vehicle from the outside of the vehicle can be reduced, and the NVH performance of the vehicle is improved.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle parts, and in particular to an exhaust sound insulation cover, a vehicle body and a vehicle. Background Art

[0002] As customers have increasingly stringent requirements for vehicles, in order to ensure the NVH (noise, vibration and harshness) properties of the entire vehicle, such as road noise and tire noise, the airtightness of the entire vehicle is getting better and better, and at the same time, the exhaust path inside the vehicle is becoming more and more tortuous; against this background, when the vehicle door is closed, the airflow brought into the vehicle is more difficult to discharge, and it will also produce greater gas pressure on the passengers, resulting in a worse ear pressure experience, which is easy to cause customer complaints.

[0003] In the prior art, in order to allow the gas in the vehicle to be discharged smoothly, an exhaust hole is generally provided. However, the exhaust hole causes the noise outside the vehicle to be transmitted into the vehicle, resulting in a deterioration in the NVH performance of the vehicle. Summary of the invention

[0004] The purpose of the present application is to overcome the deficiencies of the prior art and to provide an exhaust sound insulation cover, a vehicle body and a vehicle, which can not only meet the exhaust function, but also reduce the noise from the outside of the vehicle transmitted into the vehicle, thereby improving the NVH performance of the vehicle.

[0005] The technical solution of the present application provides an exhaust sound insulation cover, including a cover body for covering an exhaust hole, wherein the cover body is provided with a first opening, the first opening is open toward the bottom of a vehicle, and an inner wall of the cover body is provided with a sound absorbing layer.

[0006] Optionally, the cover body is further provided with a second opening, the second opening is arranged at an adjacent side of the first opening, and the second opening is open toward the rear of the vehicle.

[0007] Optionally, the cover body includes a first connecting plate and a second connecting plate, a third connecting plate and a fourth connecting plate for connecting to the vehicle body, the second connecting plate, the third connecting plate and the fourth connecting plate are all connected to the first connecting plate, and the second connecting plate and the fourth connecting plate are respectively arranged on two sides adjacent to the third connecting plate;

[0008] The first opening is formed between the first connecting plate and the second connecting plate, and the second opening is arranged on the fourth connecting plate.

[0009] Optionally, two second openings are provided, wherein one of the second openings is provided at a side close to the third connecting plate, and the other second opening is provided at a side away from the third connecting plate and communicated with the first opening.

[0010] Optionally, the sound-absorbing layer is sound-absorbing cotton pasted on the inner walls of the first connecting plate, the second connecting plate, the third connecting plate and the fourth connecting plate.

[0011] Optionally, a reinforcement structure is further provided on the cover body, and the reinforcement structure includes a flange structure provided along edges of the first opening and the second opening.

[0012] The present invention also discloses a vehicle body, comprising an outer panel and the above-mentioned exhaust sound insulation cover, wherein the outer panel is provided with an exhaust hole, the exhaust hole is arranged below the waistline of the vehicle, a pressure relief valve is installed in the exhaust hole, and the cover body is connected to the inner side of the outer panel and covers the pressure relief valve.

[0013] Optionally, it also includes an interior panel and a rear protection bracket, the interior panel is arranged on the inner side of the outer panel, the cover body is arranged between the interior panel and the outer panel, the interior panel is provided with a grille, and the rear protection bracket is connected to the outer side of the outer panel, a first air flow channel is formed between the interior panel, the cover body and the outer panel, a second air flow channel is formed between the outer panel and the rear protection bracket, and ventilation is provided between the first air flow channel and the second air flow channel through the pressure relief valve.

[0014] Optionally, the rear protection bracket is provided with a first rib, and the first rib is arranged above the exhaust hole.

[0015] Optionally, the rear protection bracket is further provided with a second rib, and the second rib is arranged on a side of the exhaust hole close to the wheel.

[0016] The invention also discloses a vehicle, comprising the vehicle body.

[0017] After adopting the above technical solution, the following beneficial effects are achieved:

[0018] The exhaust sound insulation hood disclosed in the present application has a hood body covering the exhaust hole. When the vehicle door is closed, the air inside the cabin can pass through the first opening of the hood body and then be discharged to the outside of the vehicle through the exhaust hole, so as to improve the comfort of the passenger's ear pressure and reduce the resistance when closing the door. At the same time, when the noise outside the vehicle is transmitted into the vehicle through the exhaust hole, the noise can be reduced by the sound-absorbing layer arranged on the inner wall of the hood body, and the noise is transmitted through the first opening toward the bottom of the vehicle, that is, it can be transmitted in the direction away from the occupants, so as to reduce the noise inside the vehicle and improve the NVH performance of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The disclosure of the present application will become easier to understand with reference to the accompanying drawings. It should be understood that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present application. In the drawings:

[0020] Figure 1is a schematic diagram of the overall structure of an exhaust sound insulation cover in one embodiment of the present invention;

[0021] Figure 2 is a schematic diagram of the internal structure of an exhaust sound insulation cover in one embodiment of the present invention;

[0022] Figure 3 is a schematic diagram of an exhaust sound insulation cover installed on an outer panel in one embodiment of the present invention;

[0023] Figure 4 is a schematic structural diagram of a vehicle body in one embodiment of the present invention;

[0024] Figure 5 It is a schematic diagram of a rear support bracket in one embodiment of the present invention.

[0025] Reference table of reference numerals:

[0026] Cover body 10: sound absorbing layer 100, first opening 101, second opening 102, first connecting plate 103, second connecting plate 104, third connecting plate 105, fourth connecting plate 106, flange structure 107, reinforcing ribs 108, mounting portion 109;

[0027] Exhaust hole 20: pressure relief valve 201;

[0028] Outer panel 30;

[0029] Rear support bracket 40: first rib 401, second rib 402;

[0030] Interior trim panel 50. DETAILED DESCRIPTION

[0031] The specific implementation of the present application is further described below with reference to the accompanying drawings.

[0032] It is easy to understand that according to the technical solution of the present application, without changing the essential spirit of the present application, a variety of structural modes and implementation modes that can be replaced by those skilled in the art can be replaced with each other. Therefore, the following specific implementation modes and drawings are only exemplary descriptions of the technical solution of the present application, and should not be regarded as the entirety of the present application or as a limitation or restriction on the technical solution of the application.

[0033] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. They are relative concepts and may change accordingly according to their different positions and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0034] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above-mentioned in this application can be understood according to the specific circumstances.

[0035] In one embodiment of the present invention, an exhaust sound insulation cover is disclosed, such as Figure 1 and Figure 3 As shown, it includes a cover 10 for covering the exhaust hole 20, and the cover 10 is provided with a first opening 101, and the first opening 101 is open toward the bottom of the vehicle, as shown in FIG. Figure 2 As shown, the inner wall of the cover body 10 is provided with a sound absorbing layer 100 .

[0036] Further, such as Figure 3 As shown, a cavity is provided in the cover 10, the cover 10 covers the exhaust hole 20, the first opening 101 is connected to the cavity, and the exhaust hole 20 is connected to the cavity, wherein the first opening 101 provided on the cover 10 is open toward the bottom of the vehicle, when the door is closed, the airflow in the vehicle can enter the cavity from the first opening 101 and be discharged from the exhaust hole 20 to the outside of the vehicle, thereby preventing the increase of the air pressure in the vehicle when the door is closed from affecting the ear pressure comfort of the passengers. At the same time, since the exhaust hole 20 is provided, the noise outside the vehicle will be transmitted into the vehicle from the exhaust hole 20, and since the inner wall of the cover 10 in the present application is provided with a sound absorbing layer 100, when the noise enters the cover 10, the noise can be reduced by the sound absorbing layer 100, and since the first opening 101 is open toward the bottom of the vehicle, the propagation path of the sound is toward the bottom of the vehicle, so as to be away from the ears of the passengers, thereby reducing the noise in the vehicle and improving the NVH performance of the vehicle.

[0037] In some embodiments of the present invention, Figure 1 As shown, the cover body 10 is further provided with a second opening 102 . The second opening 102 is provided at a side adjacent to the first opening 101 , and the second opening 102 is open toward the rear of the vehicle.

[0038] Furthermore, by providing the second opening 102 , the air inside the vehicle can be discharged to the outside of the vehicle more quickly through the exhaust hole 20 when the vehicle door is closed, so as to avoid the increase of the air pressure inside the vehicle and the impact on the ear pressure comfort of the passengers.

[0039] The second opening 102 is open toward the rear of the vehicle, so that the noise outside the vehicle can be transmitted toward the rear of the vehicle after entering the cover body 10, thereby being away from the ears of the occupants, reducing the impact on the occupants and improving the NVH performance of the vehicle.

[0040] In some embodiments of the present invention, Figure 1 As shown, the cover body 10 includes a first connecting plate 103 and a second connecting plate 104, a third connecting plate 105 and a fourth connecting plate 106 for connecting with the vehicle body, the second connecting plate 104, the third connecting plate 105 and the fourth connecting plate 106 are all connected to the first connecting plate 103, and the second connecting plate 104 and the fourth connecting plate 106 are respectively arranged on two sides adjacent to the third connecting plate 105;

[0041] A first opening 101 is formed between the first connecting plate 103 and the second connecting plate 104 , and a second opening 102 is provided on the fourth connecting plate 106 .

[0042] Furthermore, the first connecting plate 103, the second connecting plate 104, the third connecting plate 105 and the fourth connecting plate 106 are an integrally formed structure, and the first connecting plate 103, the second connecting plate 104, the third connecting plate 105 and the fourth connecting plate 106 form a cavity of the cover body 10, and the second connecting plate 104, the third connecting plate 105 and the fourth connecting plate 106 are respectively connected to the three edges of the first connecting plate 103.

[0043] The first connecting plate 103, the second connecting plate 104, the third connecting plate 105 and the fourth connecting plate 106 can block the noise entering the vehicle from the outside, so as to guide the noise to propagate along the first opening 101 opened toward the bottom of the vehicle and the second opening 102 opened toward the rear of the vehicle, so as to make the noise entering from the outside of the vehicle propagate in a direction away from the ears of the passengers, reduce the impact on the passengers in the vehicle, and improve the NVH performance of the vehicle. Furthermore, the first connecting plate 103, the second connecting plate 104, the third connecting plate 105 and the fourth connecting plate 106 are integrally formed injection molded parts.

[0044] Among them, Figure 1 As shown, the second connecting plate 104, the third connecting plate 105 and the fourth connecting plate 106 are used to be connected and fixed to the outer panel 30 of the vehicle body. A mounting portion 109 is provided on the end of the second connecting plate 104, the third connecting plate 105 and the fourth connecting plate 106 away from the first connecting plate 103. The mounting portion 109 is fixedly connected to the outer panel 30 by fasteners, so that the cover body 10 can be fixed to the outer panel 30.

[0045] In addition, a reinforcement structure is provided on the cover body 10, and the reinforcement structure includes reinforcement ribs 108 arranged on the surface of the second connecting plate 104, the third connecting plate 105 and the fourth connecting plate 106, so as to improve the structural strength of the second connecting plate 104, the third connecting plate 105 and the fourth connecting plate 106, wherein the reinforcement ribs 108 extend to the mounting portion 109 so that the structural strength of the mounting portion 109 can be enhanced.

[0046] In some embodiments of the present invention, Figure 1 As shown, two second openings 102 are provided, wherein one second opening 102 is disposed at a side close to the third connecting plate 105 , and the other second opening 102 is disposed at a side away from the third connecting plate 105 and communicated with the first opening 101 .

[0047] Furthermore, the two second openings 102 are respectively disposed on both sides of the fourth connecting plate 106 to increase the opening area of ​​the second openings 102 , thereby improving the exhaust efficiency.

[0048] In some embodiments of the present invention, Figure 2 As shown, the sound absorbing layer 100 is sound absorbing cotton pasted on the inner walls of the first connecting plate 103 , the second connecting plate 104 , the third connecting plate 105 and the fourth connecting plate 106 .

[0049] The sound-absorbing cotton can absorb the noise transmitted from the exhaust hole 20 to reduce the noise inside the vehicle and improve the NVH performance.

[0050] In some embodiments of the present invention, Figure 1 As shown, the cover body 10 is further provided with a reinforcement structure, and the reinforcement structure includes a flange structure 107 arranged along the edges of the first opening 101 and the second opening 102 .

[0051] The flange structure 107 protrudes outwards in a direction away from the cavity of the cover body 10 , so as to improve the structural strength of the cover body 10 .

[0052] The present invention also discloses a vehicle body, such as Figure 4 As shown, it includes an outer panel 30 and the above-mentioned exhaust sound insulation cover, the outer panel 30 is provided with an exhaust hole 20, the exhaust hole 20 is arranged below the waistline of the vehicle, a pressure relief valve 201 is installed in the exhaust hole 20, and the cover body 10 is connected to the inner side of the outer panel 30 and covers the pressure relief valve 201.

[0053] Furthermore, based on the boundary of the lower edge of the window frame, the area above the lower edge of the window frame is above the waistline, and the area below the lower edge of the window frame is below the waistline, wherein the exhaust hole 20 is provided below the waistline, thereby being away from the position of the passenger's ears and reducing the impact of noise on the passenger.

[0054] Furthermore, the exhaust hole 20 is disposed at the rear lower portion of the vehicle so as to be as far away from the occupants as possible, so that when external noise is transmitted through the exhaust hole 20 , it will not have a significant impact on the occupants.

[0055] In addition, by providing a pressure relief valve 201 at the exhaust hole 20 , the exhaust hole 20 can be closed when exhaust is not required, so as to reduce external noise from entering the vehicle through the exhaust hole 20 , thereby improving the NVH performance of the vehicle.

[0056] In some embodiments of the present invention, Figure 4 As shown, it also includes an interior panel 50 and a rear protection bracket 40. The interior panel 50 is arranged on the inner side of the outer panel 30, the cover body 10 is arranged between the interior panel 50 and the outer panel 30, and a grille is provided on the interior panel 50. The rear protection bracket 40 is connected to the outer side of the outer panel 30. A first air flow channel is formed between the interior panel 50, the cover body 10 and the outer panel 30, and a second air flow channel is formed between the outer panel 30 and the rear protection bracket 40. The first air flow channel and the second air flow channel are ventilated through a pressure relief valve 201.

[0057] Furthermore, the grille on the interior trim panel 50 can be used for ventilation. When the vehicle door is closed, air flows through the grille to between the interior trim panel 50 and the exterior trim panel, and enters the first airflow channel. The airflow pushes the pressure relief valve 201 to open, so that the airflow can flow through the exhaust hole 20 to the second airflow channel outside the vehicle, thereby realizing the pressure relief function.

[0058] Furthermore, a sound-absorbing structure is provided on the interior trim panel 50 , and the sound-absorbing structure may be sound-absorbing cotton or an interior trim component, so as to reduce the noise transmitted into the vehicle inside the interior trim panel 50 .

[0059] In some embodiments of the present invention, Figure 5 As shown, the rear protection bracket 40 is provided with a first rib 401 , and the first rib 401 is arranged above the exhaust hole 20 .

[0060] Furthermore, the first rib 401 protrudes in the direction of the vehicle interior and is disposed above the upper edge of the exhaust hole 20 . The first rib 401 can serve as a water barrier, thereby preventing external water from entering the exhaust hole 20 .

[0061] In some embodiments of the present invention, Figure 5 As shown, the rear protection bracket 40 is further provided with a second rib 402 , and the second rib 402 is arranged on a side of the exhaust hole 20 close to the wheel.

[0062] Furthermore, the second side 402 protrudes in the direction of the interior of the vehicle, and the second side 402 is arranged on one side of the first side 401, the first side 401 is connected to the second side 402, and the second side 402 is arranged on the side of the exhaust hole 20 close to the wheel. The second side 402 can block the noise transmitted from the direction of the wheel to improve the NVH performance of the vehicle.

[0063] The invention also discloses a vehicle, comprising the vehicle body.

[0064] The above description is only the principle and preferred embodiment of the present application. It should be pointed out that, for ordinary technicians in this field, on the basis of the principle of the present application, several other modifications can be made, which should also be regarded as the protection scope of the present application.

Claims

1. An exhaust sound insulation cover, characterized in that: The invention comprises a cover body for covering the exhaust hole, wherein the cover body is provided with a first opening, the first opening is open toward the bottom of the vehicle, and the inner wall of the cover body is provided with a sound absorbing layer.

2. The exhaust sound insulation cover according to claim 1, characterized in that: The cover body is further provided with a second opening, which is arranged at an adjacent side of the first opening and opens toward the rear of the vehicle.

3. The exhaust sound insulation cover according to claim 2, characterized in that: The cover body includes a first connecting plate and a second connecting plate, a third connecting plate and a fourth connecting plate for connecting to the vehicle body, the second connecting plate, the third connecting plate and the fourth connecting plate are all connected to the first connecting plate, and the second connecting plate and the fourth connecting plate are respectively arranged on two sides adjacent to the third connecting plate; The first opening is formed between the first connecting plate and the second connecting plate, and the second opening is arranged on the fourth connecting plate.

4. The exhaust sound insulation cover according to claim 3, characterized in that: There are two second openings, one of which is arranged at a side close to the third connecting plate, and the other of which is arranged at a side away from the third connecting plate and communicated with the first opening.

5. The exhaust sound insulation cover according to claim 2, characterized in that: The sound-absorbing layer is sound-absorbing cotton pasted on the inner walls of the first connecting plate, the second connecting plate, the third connecting plate and the fourth connecting plate.

6. The exhaust sound insulation cover according to claim 4, characterized in that: The cover body is also provided with a reinforcement structure, and the reinforcement structure includes a flange structure arranged along the edges of the first opening and the second opening.

7. A vehicle body, characterized in that: It comprises an outer panel and the exhaust sound insulation cover according to any one of claims 1 to 6, wherein the outer panel is provided with an exhaust hole, the exhaust hole is arranged below the waistline of the vehicle, a pressure relief valve is installed in the exhaust hole, and the cover body is connected to the inner side of the outer panel and covers the pressure relief valve.

8. The vehicle body according to claim 7, characterized in that: It also includes an interior panel and a rear protection bracket, the interior panel is arranged on the inner side of the outer panel, the cover body is arranged between the interior panel and the outer panel, a grille is provided on the interior panel, and the rear protection bracket is connected to the outer side of the outer panel, a first air flow channel is formed between the interior panel, the cover body and the outer panel, a second air flow channel is formed between the outer panel and the rear protection bracket, and ventilation is provided between the first air flow channel and the second air flow channel through the pressure relief valve.

9. The vehicle body according to claim 8, characterized in that The rear protection bracket is provided with a first retaining edge, and the first retaining edge is arranged above the exhaust hole.

10. The vehicle body according to claim 8, characterized in that The rear protection bracket is also provided with a second rib, and the second rib is arranged on a side of the exhaust hole close to the wheel.

11. A vehicle, characterized in that: A vehicle body comprising the vehicle body described in any one of claims 7-10.

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