A ventilation device for releasing pressure inside a motor vehicle

Abstract

A ventilation device for releasing the internal pressure of a motor vehicle comprises a mounting frame and a valve plate. The mounting frame comprises a main frame and a secondary frame. Each secondary frame comprises a frame, a vent, and a clamp. The clamp comprises a connecting plate, an abutment plate, and a retaining plate. The abutment plate extends toward the vent and the angle between the extension direction of the abutment plate and the plane where the vent is located comprises an acute angle. The valve plate is made of a flexible material and covers the vent. The valve plate abuts between the free end of the abutment plate and the frame. When the air pressure inside the vehicle of the ventilation device is greater than the air pressure outside the vehicle, the valve plate will be opened by the air pressure, and because it is bent at the position where it contacts the abutment plate, it can not only quickly return to its original state, but also cover the vent more tightly, so that the noise from outside the vehicle can be reduced as much as possible and the user's car experience can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of motor vehicle ventilation, and in particular to a ventilation device for releasing the internal pressure of a motor vehicle. Background Art

[0002] In motor vehicles, such as sedans, SUVs, or new energy vehicles, when the doors are closed, the air will be compressed inside the vehicle, forming high pressure, which will not only make people sitting in the car uncomfortable, but also sometimes compress vehicle equipment, such as glass. Therefore, ventilation devices are provided on vehicle doors or vehicle frames to balance the air pressure inside and outside the vehicle by ventilating when the doors are closed. In addition, the ventilation device is also used to remove the exhaust gas inside the vehicle, so the ventilation device has a basic requirement that the airflow can only flow out of the vehicle through the ventilation device, and cannot flow from outside to inside.

[0003] Based on the above application occasions and requirements, US Patent 5823870 and European Patent EP0915302 both disclose such ventilation devices. However, the movable margin of the valve flap in the ventilation device in the prior art is too large, and a gap will still be generated in its closed state, which is not conducive to isolating external noise to improve the ride comfort of the vehicle. Summary of the invention

[0004] In view of this, the present invention provides a ventilation device for releasing the internal pressure of a motor vehicle which can solve the above-mentioned problem.

[0005] A ventilation device for releasing the internal pressure of a motor vehicle comprises a mounting frame and a plurality of valve plates arranged in the mounting frame. The mounting frame comprises a main frame and a plurality of sub-frames arranged in the main frame. Each sub-frame has the same structure and comprises a frame, at least one vent arranged on the frame, and at least one clamping member arranged on the frame. The clamping member is umbrella-shaped and comprises a connecting plate, an abutting plate arranged on one side of the free end of the connecting plate, and a retaining plate arranged on the other side of the free end of the connecting plate. The connecting plate extends from the plane where the vent is located. The abutting plate extends toward the vent and the angle between the extending direction of the abutting plate and the plane where the vent is located includes an acute angle. The retaining plate extends toward the vent and the angle between the extending direction of the retaining plate and the plane where the vent is located includes an acute angle. The valve plate is made of a flexible material and covers the vent and comprises at least one socket groove. The connecting plate is inserted in the socket groove and the valve plate abuts between the free end of the abutting plate and the frame.

[0006] Furthermore, the main frame includes a mounting through hole for arranging a plurality of the sub-frames, and the angle between the plane where the vent is located and the plane where the mounting through hole is located is an acute angle.

[0007] Furthermore, the mounting frame includes four sub-frames, and the planes where the ventilation openings of the four sub-frames are located are parallel to each other.

[0008] Furthermore, each sub-frame also includes a sealing strip arranged at the periphery of the vent, and the valve plate cover is arranged on the sealing strip.

[0009] Furthermore, the angle between the extension direction of the connecting plate and the plane where the ventilation opening is located is less than or equal to 90 degrees.

[0010] Furthermore, the distance between the free end of the abutment plate and the plane where the mesh opening is located is less than or equal to the thickness of the valve plate.

[0011] Furthermore, the valve plate is pressed on the vent by gravity when in the static position.

[0012] Furthermore, the clamping member is arranged at the connection between the two sub-frames.

[0013] Furthermore, the main frame and the secondary frame are integrally formed.

[0014] Further, when the valve plate pivots from the static position in the opening direction, the valve plate bends at a position where the valve plate contacts the abutment plate.

[0015] Compared with the prior art, the ventilation device for releasing the internal pressure of a motor vehicle provided by the present invention is provided with at least one clamping member on the secondary frame, the clamping member is umbrella-shaped and includes a connecting plate, an abutting plate arranged on one side of the free end of the connecting plate, and a retaining plate arranged on the other side of the free end of the connecting plate. The connecting plate is used to insert the socket groove of the valve plate, and the valve plate is clamped between the abutting plate and the frame of the secondary frame. When the air pressure inside the vehicle is greater than the air pressure outside the vehicle, the valve plate will be opened by the action of the air pressure and bend at the position in contact with the abutting plate, which not only allows the valve plate to quickly return to its original state after the air pressure inside and outside the vehicle is balanced, but also allows the valve plate to cover the vent more tightly due to the action of the abutting plate when it is in a stationary state, so that the noise from outside the vehicle can be reduced as much as possible and the user's vehicle experience can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the exploded structure of a ventilation device for releasing internal pressure of a motor vehicle provided by the present invention.

[0017] Figure 2 for Figure 1 A schematic diagram of the partial enlarged structure of a ventilation device for releasing internal pressure of a motor vehicle at position A.

[0018] Figure 3 for Figure 1 A schematic cross-sectional structure diagram of a ventilation device for releasing internal pressure of a motor vehicle. DETAILED DESCRIPTION

[0019] The specific embodiments of the present invention are further described in detail below. It should be understood that the description of the embodiments of the present invention herein is not intended to limit the protection scope of the present invention.

[0020] like Figures 1 to 3 , which is a schematic diagram of the structure of a ventilation device for releasing the internal pressure of a motor vehicle provided by the present invention. The ventilation device for releasing the internal pressure of a motor vehicle includes a mounting frame 10, and a plurality of valve plates 20 arranged in the mounting frame 10. It can be imagined that the ventilation device also includes some other functional structures, such as a mounting structure, a sealing structure, etc., which are well known to those skilled in the art and will not be described in detail here.

[0021] The mounting frame 10 itself is a prior art, which is installed on the vehicle body and is generally made of hard plastic injection molding. The mounting frame 10 includes a main frame 11, and a plurality of sub-frames 12 arranged in the main frame 11. The mounting frame 10 also includes some other structures, such as a snap-on structure, a sealing structure, and a matching structure that matches other components, etc., which will not be described in detail here. The main frame 11 includes a mounting through hole 111 for setting a plurality of the sub-frames 12. The shape and axial depth of the mounting through hole 111 can be designed according to actual needs. In the present embodiment, the mounting through hole 111 is a rectangular through hole. The sub-frame 12 is integrally injection molded with the main frame 11 and each sub-frame 12 has the same structure. In the present embodiment, the mounting frame 10 includes four sub-frames 12. Each of the sub-frames 12 includes a frame 121, at least one vent 122 arranged on the frame 121, at least one clamping member 123 arranged on the frame 121, and a sealing strip 124 arranged on the periphery of the vent 122. The frame 121 is fixed to the main frame 11 and formed integrally therewith. In this embodiment, each of the sub-frames 12 has three vents 122. The three vents 122 are opened in the frame 121, and the arrangement direction of the three vents 122 is perpendicular to the arrangement direction of the plurality of sub-frames 12. In order to utilize the effect of gravity, that is, the valve sheet 20 can cover the three vents 122 of a sub-frame 12 under the effect of gravity in a stationary state, the angle between the plane where the vent 122 is located and the plane where the mounting through hole 111 is located is an acute angle, so that the valve sheet can be covered on the vent 122 by utilizing the effect of gravity by installing the angle of the mounting frame 10. At the same time, for the four sub-frames 12 , the planes on which the vents 122 are opened are parallel to each other to achieve synchronous movement.

[0022] The clamping member 123 includes a connecting plate 1231 connected to the frame 121, an abutting plate 1232 arranged on one side of the free end of the connecting plate 1231, and a retaining plate 1233 arranged on the other side of the free end of the connecting plate 1231. By arranging the abutting plate 1232 and the retaining plate 1233 on both sides of the connecting plate 1231, the clamping member 123 is in an umbrella-shaped structure. The connecting plate 1231 extends from the plane where the vent 122 is located. In order to achieve the effect of clamping, the angle between the extending direction of the connecting plate 1231 and the plane where the vent 122 is located is less than or equal to 90 degrees. The abutting plate 1232 extends toward the vent 122 and the angle between the extending direction of the abutting plate 1232 and the plane where the vent 122 is located includes an obtuse angle, so that the abutting plate 1232 has an abutting effect. At the same time, the distance between the free end of the abutting plate 1232 and the plane where the mesh opening 122 is located is less than or equal to the thickness of the valve plate 20, so that the valve plate 20 abuts between the free end of the abutting plate 1232 and the frame 121. Since the valve plate 20 abuts between the free end of the abutting plate 1232 and the frame 121, when the valve plate 20 pivots from the static position in the opening direction, the valve plate 20 bends at the position in contact with the abutting plate 1232. Due to the deformation caused by the bending of the valve plate 20, the valve plate 20 has a restoring force to restore the original state. Therefore, when the air pressure inside and outside the vehicle is balanced, the valve plate 20 can immediately return to the static position, allowing as little noise as possible to enter the vehicle. The retaining plate 1233 extends toward the vent 122, and the angle between the extending direction of the retaining plate 1233 and the plane where the vent 122 is located includes an acute angle, which is used to limit the position of the edge of the valve plate 20 when it is tilted, that is, to limit the activity space of the edge of the valve plate 20. In order to avoid limiting the pivoting of the valve plate 20, the distance between the free end of the retaining plate 1233 and the frame 121 is greater than the thickness of the valve plate 20.

[0023] The sealing strip 124 is arranged at the periphery of the vent 122 and can protrude from the plane where the vent 122 is located. There are many ways to assemble the sealing strip 124, such as opening a groove at the periphery of the vent 122 and then filling the sealing strip 124 in the groove. The sealing strip 124 can also be adhered to the periphery of the vent 122 by adhesive. The sealing strip 124 can be made of a flexible material such as a silicone material.

[0024] The valve plate 20 is made of a flexible material and covers the vents 122. Specifically, since three vents 122 are provided on each of the sub-frames 12, the valve plate 20 covers the three vents 122. The valve plate 20 includes at least one socket slot 21. In this embodiment, the valve plate 20 has two socket slots 21, which are respectively sleeved on the clamping member 123. In order to facilitate the insertion and clamping of the valve plate 20, the contour area of ​​the socket slot 21 is larger than the cross-sectional area of ​​the connecting plate 1231, and smaller than the maximum area enclosed by the abutting plate 1232 and the protective plate 1233, so that when the socket slot 21 of the valve plate 20 is sleeved on the connecting plate 1231, it can avoid being separated from the clamping member 123.

[0025] Compared with the prior art, the ventilation device for releasing the internal pressure of a motor vehicle provided by the present invention is provided with at least one clip 123 on the secondary frame 12, and the clip 123 is umbrella-shaped and includes a connecting plate 1231, an abutment plate 1232 arranged on one side of the free end of the connecting plate 1231, and a retaining plate 1233 arranged on the other side of the free end of the connecting plate 1231. The connecting plate 1231 is used to insert the socket groove 21 of the valve plate 20, and the valve plate 20 is clamped between the abutment plate 1232 and the frame 121 of the secondary frame 12. When the air pressure inside the car is greater than the air pressure outside the car, the valve plate 20 will be opened by the air pressure and bend at the position in contact with the abutment plate 1232. This not only allows the valve plate 20 to quickly return to its original state after the air pressure inside and outside the car is balanced, but also, when it is stationary, due to the action of the abutment plate 1232, the valve plate 20 can be more tightly pressed on the vent 122, thereby reducing the noise from outside the car as much as possible and improving the user's car experience.

[0026] The above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modification, equivalent substitution or improvement within the spirit of the present invention is included in the scope of the claims of the present invention.

Claims

1. A ventilation device for releasing pressure inside a motor vehicle, characterized in that: The ventilation device for releasing the internal pressure of a motor vehicle comprises a mounting frame and a plurality of valve plates arranged in the mounting frame, the mounting frame comprises a main frame body and a plurality of sub-frame bodies arranged in an array in the main frame body, each sub-frame body has the same structure and comprises a frame, at least one vent arranged on the frame, and at least one clamping member arranged on the frame, the clamping member is umbrella-shaped and comprises a connecting plate, an abutting plate arranged on one side of the free end of the connecting plate, and a retaining plate arranged on the other side of the free end of the connecting plate, the connecting plate extends from the plane where the vent is located, the abutting plate extends toward the vent and the angle between the extending direction of the abutting plate and the plane where the vent is located comprises an acute angle, The retaining plate extends toward the vent and the angle between the extending direction of the retaining plate and the plane where the vent is located includes an acute angle, the valve sheet is made of flexible material and covers the vent and includes at least one socket groove, the connecting plate is inserted in the socket groove and the valve sheet abuts between the free end of the abutting plate and the frame, the distance between the free end of the abutting plate and the plane where the vent is located is less than or equal to the thickness of the valve sheet, when the valve sheet pivots from a static position in an opening direction, the valve sheet bends at a position in contact with the abutting plate, the distance between the free end of the retaining plate and the frame is greater than the thickness of the valve sheet, the contour area of ​​the socket groove is greater than the cross-sectional area of ​​the connecting plate, and is smaller than the maximum area enclosed by the abutting plate and the retaining plate.

2. The ventilation device for releasing the internal pressure of a motor vehicle according to claim 1, characterized in that: The main frame includes a mounting through hole for arranging a plurality of the sub-frames, and an angle between a plane where the vent is located and a plane where the mounting through hole is located is an acute angle.

3. The ventilation device for releasing the internal pressure of a motor vehicle according to claim 1, characterized in that: The mounting frame comprises four sub-frames, and the planes where the ventilation openings of the four sub-frames are located are parallel to each other.

4. The ventilation device for releasing the internal pressure of a motor vehicle according to claim 1, characterized in that: Each sub-frame also includes a sealing strip arranged at the periphery of the vent, and the valve sheet cover is arranged on the sealing strip.

5. The ventilation device for releasing the internal pressure of a motor vehicle according to claim 1, characterized in that: The angle between the extension direction of the connecting plate and the plane where the vent is located is less than or equal to 90 degrees.

6. The ventilation device for releasing the internal pressure of a motor vehicle according to claim 1, characterized in that: The valve plate is pressed against the vent by gravity when in the rest position.

7. The ventilation device for releasing the internal pressure of a motor vehicle according to claim 1, characterized in that: The clamping piece is arranged at the connection of the two secondary frames.

8. The ventilation device for releasing the internal pressure of a motor vehicle according to claim 1, characterized in that: The main frame and the secondary frame are integrally formed.

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