Vehicle body pressure release valve and vehicle

Abstract

The utility model discloses a vehicle body pressure release valve and a vehicle, the vehicle body pressure release valve comprises a pressure release valve shell and a blade, a through gas flow channel is arranged in the pressure release valve shell, and the blade is arranged on the pressure release valve shell and can open or close the gas flow channel. An upper eave and a lower eave are arranged at the upper end and the lower end of the gas flow channel in the height direction respectively, and the lower eave obliquely extends downwards from the lower end of the gas flow channel relative to the horizontal direction. The blades comprise the first blade and the second blade which are sequentially arranged in the height direction, the first blade is rotatably arranged on the inner side, close to the upper eave, of the gas flow channel, and the second blade is rotatably arranged on the inner side, close to the lower eave, of the gas flow channel. Wherein the opening degree of the second blades is smaller than that of the first blades relative to the height direction, and when viewed in the height direction, the outline of the second blade with the maximum opening degree is located within the outline range of the first blade with the maximum opening degree. By arranging the inclined lower eave, the water inflow prevention capacity of the automobile body pressure release valve can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field related to pressure relief valves, and in particular to a vehicle body pressure relief valve and a vehicle with the vehicle body pressure relief valve. Background Art

[0002] A vehicle's body pressure relief valves are typically located symmetrically on either side of the rear trunk. Their primary function is pressure relief and air circulation, while also providing a limited one-way flow function. Air inside the vehicle can be exhausted through the valves, while only a minimal amount of outside air can enter the vehicle through them. When the windows and doors are closed and external circulation is activated, air is drawn into the vehicle, gradually increasing the air pressure inside. At this point, the air inside can be exhausted through the pressure relief valves to maintain pressure balance. Furthermore, closing the doors quickly and forcefully causes a rapid increase in pressure inside the vehicle. To prevent the doors from closing with difficulty or even not closing tightly, the body pressure relief valves are required to relieve pressure.

[0003] The existing vehicle body pressure relief valve structure is as follows Figure 1 As shown, it consists of a blade 1, a pressure relief valve housing 2 and a bracket 3. The blade 1 is made of soft material, with the fixed end at the upper edge, connected to the pressure relief valve housing 2. When the pressure inside the vehicle increases, the lower edge of the blade 1 opens to ensure that the air flows out of the vehicle. The maximum opening of the blade 1 is limited by the bracket.

[0004] When the vehicle is driving or parked outdoors on rainy days, rainwater will flow into the pressure relief valve area along the installation gaps of the taillights, side panels and rear bumper. Therefore, the body pressure relief valve should not be placed in areas with large water flow. However, when the rainfall is heavy, especially in a rainstorm, a large amount of rainwater will still flow into the pressure relief valve area. Figure 2 As shown by the dotted line in the figure, when a large amount of rainwater flows to the housing of the pressure relief valve, water will accumulate on the surface of the lower eaves of the pressure relief valve housing 2. When the water accumulates to a certain level, it will flow into the car along the gap between the blades and the housing, causing water to enter the car.

[0005] Therefore, the existing vehicle pressure relief valve has the problem that rainwater easily flows into the vehicle through the lower eaves of the shell, causing water to enter the vehicle. Utility Model Content

[0006] The utility model aims to solve the problem in the prior art of a vehicle pressure relief valve that rainwater easily flows into the vehicle through the lower eaves of the housing, causing water to enter the vehicle.

[0007] To address the aforementioned technical issues, embodiments of the present utility model disclose a vehicle body pressure relief valve comprising a pressure relief valve housing and a blade. A gas flow passage is disposed within the pressure relief valve housing, and the blade is mounted on the pressure relief valve housing and is configured to open and close the gas flow passage. The gas flow passage is provided with upper and lower eaves at the upper and lower ends thereof in the height direction, respectively. The lower eaves extend downwardly from the lower end of the gas flow passage at an angle relative to the horizontal.

[0008] Furthermore, the blades include a first blade and a second blade arranged in sequence along the height direction, the first blade being rotatably disposed on the inner side of the gas flow channel near the upper eaves, and the second blade being rotatably disposed on the inner side of the gas flow channel near the lower eaves. The second blade has a smaller opening degree than the first blade relative to the height direction, and when viewed along the height direction, the outline of the second blade at its maximum opening degree is within the outline of the first blade at its maximum opening degree.

[0009] By adopting the above technical solution, the lower eaves of the pressure relief valve disclosed in the utility model extend obliquely downward from the lower end of the gas flow channel relative to the horizontal direction, that is, the lower eaves of the pressure relief valve are arranged obliquely downward; by setting up this structure, when driving or parked outdoors on a rainy day, when rainwater flows along the shell of the pressure relief valve to the lower eaves of the pressure relief valve, it will flow away in time along the obliquely downward extending lower eaves, preventing rainwater from flowing into the car through the gaps in the lower eaves, blades or the shell of the pressure relief valve, thereby further improving the water-proof ability of the car body pressure relief valve. Moreover, the opening degree of the second blade is smaller than that of the first blade, and the outline of the second blade at the maximum opening is within the outline range of the first blade at the maximum opening; by setting up this structure, when the first blade and the second blade are open, the second blade can always be covered by the first blade above, and the opening of the vehicle body pressure relief valve is covered under the first blade. Therefore, even if the pressure relief valve is arranged in an area with a large water flow, there is still no risk of water ingress. Even if water drops on the first blade, it will only drip to the bottom through the first blade, and will not drip or enter the pressure relief valve. The pressure relief valve has a higher degree of freedom in arrangement when designing the vehicle body and the overall layout of the car.

[0010] Further preferably, the inclination angle of the lower eaves relative to the horizontal direction is in the range of 10° to 40°, which can effectively drain rainwater from the lower eaves.

[0011] Further preferably, a stop flange is provided above the upper eaves, the stop flange extending upwardly from the upper surface of the upper eaves at an angle relative to the horizontal direction; and when viewed from the height direction, the outer edge of the stop flange protrudes beyond the upper eaves. The inclination angle of the stop flange relative to the horizontal direction is within the range of 0 to 60 degrees.

[0012] Further preferably, the length of the stop flange extending from the upper surface of the upper eave is in the range of 10 mm to 20 mm.

[0013] By adopting the above technical solution, the water ingress prevention effect of the pressure relief valve is further improved by designing and adjusting the inclination angle of the lower eaves, the angle and length of the upper eaves and the stop flange.

[0014] The embodiment of the present utility model further discloses a vehicle body pressure relief valve, wherein the pressure relief valve housing includes a flange structure arranged around a gas flow passage, and the cross section of the flange structure is step-shaped.

[0015] By adopting the above technical solution, a stepped flange structure is provided. When driving or parked outdoors on a rainy day, rainwater flowing into the pressure relief valve area through the installation gaps of the taillights, side panel metal and rear bumper will first drip downward along the flange structure of the pressure relief valve housing, and the stop flange will block part of the rainwater. The stop flange and the flange structure play a dual role in preventing rainwater.

[0016] The embodiment of the present utility model further discloses a vehicle body pressure relief valve. When looking toward the blades from one side of the vehicle body pressure relief valve, the first blade and the second blade are curved and protrude toward a side away from the pressure relief valve housing.

[0017] With the above technical solution, the first blade and the second blade are curved. When some rainwater falls over the stop flange and drips onto the first blade and the second blade, it will smoothly slide or drip through the blades, preventing rainwater from entering the pressure relief valve or the vehicle.

[0018] The present invention also discloses a vehicle body pressure relief valve, wherein the rotating end of a first blade is rotatably disposed on the inner side of a gas flow passage near the upper edge, and the lower end of the first blade is rotatably opened relative to the pressure relief valve housing. The rotating end of a second blade is rotatably disposed on the inner side of the gas flow passage near the lower edge, and the upper end of the second blade is rotatably opened relative to the pressure relief valve housing. Furthermore, when the first and second blades are open, the end of the second blade is always located within the projected outline of the end of the first blade when viewed along the height direction.

[0019] The embodiment of the present utility model further discloses a vehicle body pressure relief valve, wherein the opening angle of the first blade relative to the height direction is between 0° and 60°, and the opening angle of the second blade relative to the height direction is between 0° and 50°.

[0020] By adopting the above technical solution, the opening degree of the second blade is always smaller than that of the first blade, so the first blade is always covered above the second blade, thereby improving the water ingress prevention effect of the pressure relief valve.

[0021] An embodiment of the present utility model also discloses a vehicle body pressure relief valve, which also includes a rotation guide portion, which includes rotation guide grooves respectively arranged at intervals on the side surface of the first blade and the second blade facing away from the pressure relief valve housing, and protrusions arranged at corresponding positions on the inner peripheral wall of the gas flow channel.

[0022] By adopting the above technical solution, the rotating guide part guides the blades for rotation.

[0023] An embodiment of the present utility model further discloses a vehicle, comprising any one of the aforementioned body pressure relief valves, wherein the body pressure relief valve is arranged on one side of a trunk compartment at the rear of the vehicle.

[0024] The beneficial effects of the utility model are:

[0025] The utility model discloses a vehicle body pressure relief valve, the lower eaves of which extend obliquely downward from the lower end of a gas flow channel relative to a horizontal direction. When the vehicle is driving or parked outdoors on a rainy day, when rainwater flows along the housing of the pressure relief valve to the lower eaves of the pressure relief valve, the rainwater will flow away in time along the lower eaves extending obliquely downward, thereby preventing the rainwater from flowing into the vehicle through the gaps in the lower eaves, blades or the housing of the pressure relief valve, thereby further improving the water-ingress prevention capability of the vehicle body pressure relief valve.

[0026] Furthermore, the opening degree of the second blade of the vehicle body pressure relief valve is smaller than the opening degree of the first blade, and the outline of the second blade at the maximum opening is located within the outline range of the first blade at the maximum opening. When the first blade and the second blade are open, they can always be covered by the first blade above. Therefore, even if the pressure relief valve is arranged in an area with a large water flow, there is still no risk of water ingress, and there is a higher degree of freedom in vehicle body design and overall layout design.

[0027] Furthermore, a stepped flange structure, a curved first blade, and a curved second blade are provided to improve the water ingress prevention effect of the entire pressure relief valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of a vehicle body pressure relief valve in the prior art;

[0029] Figure 2 This is a schematic diagram of a vehicle body pressure relief valve in the prior art where heavy rainwater enters the pressure relief valve through the lower eaves;

[0030] Figure 3 A schematic diagram of the overall structure of a vehicle body pressure relief valve provided by an embodiment of the utility model;

[0031] Figure 4 A partial cross-sectional view of the lower eaves and the second blade of the vehicle body pressure relief valve provided by an embodiment of the present utility model;

[0032] Figure 5 A partial cross-sectional view of the upper eave and the first blade of the vehicle body pressure relief valve provided by an embodiment of the present utility model;

[0033] Figure 6 A cross-sectional view of a vehicle body pressure relief valve provided in an embodiment of the present utility model.

[0034] Description of prior art reference numerals:

[0035] 1. Blade; 2. Pressure relief valve housing; 3. Bracket;

[0036] Description of the accompanying drawings in this application:

[0037] 100. Pressure relief valve housing;

[0038] 110, upper eaves; 120, lower eaves; 130, stop flange; 140, flange structure;

[0039] 200, first blade;

[0040] 300, second blade;

[0041] 400, rotating guide portion;

[0042] A. Opening degree of the first blade; B. Opening degree of the second blade; C. Inclination angle of the lower eaves; D. Inclination angle of the stop flange; E. Height direction. DETAILED DESCRIPTION

[0043] The vehicle's body pressure relief valve is usually located on both sides of the trunk at the rear of the vehicle. It is an important component of the vehicle. The main function of the body pressure relief valve is to relieve pressure and circulate air. It also has a certain one-way flow function. The air inside the vehicle can be discharged to the outside of the vehicle through the valve, while the air outside the vehicle cannot or only a very small amount of air can enter the vehicle through the valve. Common body pressure relief valve structures are as follows: Figure 1 As shown, it consists of a blade 1, a pressure relief valve housing 2, and a bracket 3. The blade 1 is made of soft material, with the fixed end at the upper edge, connected to the pressure relief valve housing 2. When the pressure inside the vehicle increases, the lower edge of the blade 1 opens to ensure that the air flows out of the vehicle. The maximum opening of the blade 1 is limited by the bracket. When the vehicle is driving or parked outdoors on rainy days, rainwater will flow along the installation gaps of the taillights, side panel metal, and rear bumper to the pressure relief valve area. When the rainfall is heavy, especially in a rainstorm, the rainwater will flow to the pressure relief valve area. Figure 2 As shown in the curve in, when a large amount of rainwater flows to the housing of the pressure relief valve, water will accumulate on the surface of the lower eaves of the pressure relief valve housing 2. When the water accumulates to a certain level, it will flow into the car along the gap between the blades and the housing, causing water to enter the car.

[0044] In order to solve the above technical problems, the utility model discloses a new vehicle body pressure relief valve, in which the lower eaves of the vehicle body pressure relief valve are set to a downward inclined structure to prevent rainwater from entering the interior of the vehicle body pressure relief valve, and the maximum opening of the first blade located above is greater than the minimum opening of the second blade to improve the water-proof effect of the vehicle body pressure relief valve.

[0045] Next, the pressure relief valve disclosed in the present utility model is described in detail:

[0046] See Figure 3 The embodiment of the present invention discloses a vehicle body pressure relief valve, including a pressure relief valve housing 100 and a blade ( Figure 3 The first blade 200 and the second blade 300 in the pressure relief valve housing 100 are provided with a gas flow passage running through the pressure relief valve housing 100. The blades are provided on the pressure relief valve housing 100 and can open or close the gas flow passage. The gas flow passage is provided with an upper eave 110 and a lower eave 120 at the upper and lower ends along the height direction. It should be noted that the height direction is as shown in FIG. Figure 3 As shown in the direction of arrow E, the lower eaves 120 extend downwardly from the lower end of the gas flow channel at an angle relative to the horizontal direction.

[0047] Specifically, in this embodiment, the upper eaves 110 and the lower eaves 120 are provided to play a certain role in preventing rainwater from directly entering the vehicle body pressure relief valve or entering the vehicle. The lower eaves 120 extends downward from the lower end of the gas flow channel at an angle relative to the horizontal direction. When rainwater gathers at the lower eaves 120, it can quickly flow out through the inclined lower eaves 120, will not cause rainwater to gather, and can also prevent rainwater from entering the vehicle body pressure relief valve through the gap in the lower eaves 120.

[0048] See further Figure 3 The blades include a first blade 200 and a second blade 300 arranged in sequence along the height direction. The first blade 200 is rotatably arranged on the inner side of the gas flow channel near the upper eaves 110, and the second blade 300 is rotatably arranged on the inner side of the gas flow channel near the lower eaves 120. Figure 3 as well as Figure 6 Relative to the height direction, the opening degree of the second blade 300 is smaller than the opening degree of the first blade 200. When viewed along the height direction, the outline of the second blade 300 at the maximum opening is within the outline range of the first blade 200 at the maximum opening.

[0049] Specifically, the first blade 200 and the second blade 300 disclosed in this embodiment can be rotatably set on the pressure relief valve housing 100 through a rotatable structure such as a rotating shaft, a hinge, or a pivot, or can be automatically controlled by a motor. It should be noted that when the first blade 200 and the second blade 300 are in a fully closed state, the first blade 200 and the second blade 300 will block the gas flow channel in the pressure relief valve housing 100. At this time, the gas flow channel is blocked. When the first blade 200 and the second blade 300 are in an open state, when the opening degree of the first blade 200 and the second blade 300 is different, the opening angle of the first blade 200 and the second blade 300 is also different. Specifically, the smaller the opening angle of the first blade 200 and the second blade 300, the smaller the opening degree, and the larger the opening angle of the first blade 200 and the second blade 300, the larger the opening degree. During driving, the opening degree of the first blade 200 and the second blade 300 can be controlled according to the requirement of pressure balance in the vehicle. Further preferably, it is set so that the opening degree of the first blade 200 is always greater than the opening degree of the second blade 300, that is, the second blade 300 is always located below the positive projection of the first blade 200, and, when viewed along the height direction, the outline of the second blade 300 at the maximum opening is located within the outline range of the first blade 200 at the maximum opening, thereby improving the anti-water ingress effect of the vehicle body pressure relief valve.

[0050] The lower eaves 120 of the pressure relief valve disclosed in the present invention extends obliquely downward from the lower end of the gas flow channel relative to the horizontal direction, that is, the lower eaves 120 of the pressure relief valve is arranged obliquely downward. With such a structure, when driving or parked outdoors on a rainy day, when rainwater flows along the housing of the pressure relief valve to the lower eaves 120 of the pressure relief valve, it will flow away in time along the obliquely downward extending lower eaves 120, avoiding rainwater from flowing into the vehicle through the gaps in the lower eaves 120, blades or the pressure relief valve housing 100, thereby further improving the water-proof ability of the vehicle body pressure relief valve. In addition, the opening degree of the second blade 300 is smaller than the opening degree of the first blade 200, and the outline of the second blade 300 at the maximum opening is located within the outline range of the first blade 200 at the maximum opening. With such a structure, when the first blade 200 and the second blade 300 are open, the second blade 300 can always be covered by the first blade 200 above, and the opening of the vehicle body pressure relief valve is covered under the first blade 200. Therefore, even if the pressure relief valve is arranged in an area with a large water flow, there is still no risk of water ingress. Even if water drops on the first blade 200, it will only drip to the bottom through the first blade 200, and will not drip or enter the pressure relief valve. The pressure relief valve has a higher degree of freedom in arrangement during vehicle body design and overall vehicle layout design.

[0051] Furthermore, in the present application, the first blade 200 and the second blade 300 are arranged in an opposing distribution structure, which can make the gas flow in or out more smoothly and reduce the vortex when the gas enters.

[0052] Further preferably, see Figure 4 The inclination angle C of the lower eaves 120 relative to the horizontal direction is in the range of 10° to 40°. This angle can effectively drain rainwater from the lower eaves 120. Specifically, for example, the inclination angle C of the lower eaves 120 relative to the horizontal direction is 10°, 25°, 30°, 40°, etc. Those skilled in the art can set its inclination angle according to actual needs to improve the drainage effect. This embodiment does not make any specific limitations on this.

[0053] See Figure 5 Furthermore, preferably, a stop flange 130 is provided above the upper eaves 110. The stop flange 130 extends upwardly from the upper surface of the upper eaves 110 at an angle relative to the horizontal direction. Furthermore, when viewed in the height direction, the outer edge of the stop flange 130 protrudes from the upper eaves 110. The inclination angle D of the stop flange 130 relative to the horizontal direction is within a range of 0 to 60°. Specifically, in this embodiment, the inclination angle D of the stop flange 130 relative to the horizontal direction can be 10°, 15°, 30°, 60°, etc., and this embodiment does not impose any specific limitation on this.

[0054] Further preferably, the length of the stop flange 130 extending from the upper surface of the upper eaves 110 is in the range of 10 mm to 20 mm. For example, the length of the stop flange 130 extending from the upper surface of the upper eaves 110 is 10 mm, 13 mm, 16 mm, 20 mm, etc. This embodiment does not make any specific limitation on this.

[0055] With the above-mentioned structural design, the water ingress prevention effect of the pressure relief valve is further improved by designing and adjusting the inclination angle of the lower eaves 120, the angle and length of the upper eaves 110 and the stop flange 130.

[0056] The embodiment of the present utility model also discloses a vehicle body pressure relief valve, see Figure 3 The pressure relief valve housing 100 includes a flange structure 140 arranged around the gas flow channel, and the cross-section of the flange structure 140 is stepped.

[0057] With this structural design, a stepped flange structure 140 is provided. When driving or parked outdoors on a rainy day, rainwater flowing into the pressure relief valve area through the installation gaps of the taillights, side panel metal and rear bumper will first drip downward along the flange structure 140 of the pressure relief valve housing 100, and the stop flange 130 will block part of the rainwater. The stop flange 130 and the flange structure 140 play a dual role in protecting against rainwater.

[0058] The embodiment of the present utility model also discloses a vehicle body pressure relief valve, see Figure 3 When viewed from one side of the vehicle body pressure relief valve toward the blades, the first blade 200 and the second blade 300 are both curved and protrude toward the side away from the pressure relief valve housing 100 .

[0059] With this structural design, the first blade 200 and the second blade 300 are curved. When some rainwater flows over the stop flange 130 and drips onto the first blade 200 and the second blade 300, it will smoothly slide or drip through the blades, preventing rainwater from entering the pressure relief valve or the vehicle.

[0060] The embodiment of the present utility model also discloses a vehicle body pressure relief valve, see Figure 3 as well as Figure 5 The rotating end of the first blade 200 is rotatably arranged on the inner side of the gas flow channel near the upper eaves 110, and the lower end of the first blade 200 can be rotated to open relative to the pressure relief valve housing 100. Figure 3 as well as Figure 4 The rotating end of the second blade 300 is rotatably disposed on the inner side of the gas flow channel near the lower eave 120. The upper end of the second blade 300 can be rotated open relative to the pressure relief valve housing 100. Furthermore, when the first blade 200 and the second blade 300 are open, the end of the second blade 300 is always located within the projected outline of the end of the first blade 200 when viewed along the height direction.

[0061] With such a structure, when the first blade 200 and the second blade 300 are opened, when viewed along the height direction, the end of the second blade 300 is always located within the projected outline of the end of the first blade 200, and the two blades fit more closely, thereby improving the sealing performance of the pressure relief valve, and the first blade 200 and the second blade 300 are connected to the pressure relief valve housing 100 by a rotatable connection (such as a pivot connection, a shaft connection), and when the pressure relief valve is opened, the two blades can be rotated open at the same time or individually rotated open to allow gas to pass through.

[0062] The embodiment of the present utility model also discloses a vehicle body pressure relief valve, see Figure 6, the opening degree A of the first blade 200 relative to the height direction is between 0° and 60°, and the opening degree B of the second blade 300 relative to the height direction is between 0° and 50°. It should be noted that the opening degrees of the first blade 200 and the second blade 300 are also known as the opening angles. For example, the opening angle A of the first blade 200 relative to the height direction can be 0°, 25°, 40°, 60°, etc., and the opening angle B of the second blade 300 relative to the height direction can be 0°, 15°, 30°, 50°, etc. For example, when the opening angle A of the first blade 200 is 40°, the opening angle B of the second blade 300 is 30°. When the opening angle A of the first blade 200 is 60°, the opening angle B of the second blade 300 is 50°. This embodiment does not specifically limit this. With the above solution, the opening degree of the second blade 300 is always smaller than that of the first blade 200, so the first blade 200 is always covered above the second blade 300, that is, the orthographic projection area of the first blade 200 along the vertical direction is always larger than the orthographic projection area of the second blade 300 along the vertical direction, thereby improving the water-proof effect of the pressure relief valve.

[0063] The embodiment of the present utility model also discloses a vehicle body pressure relief valve, see Figure 3 The valve also includes a rotation guide 400, which comprises rotation guide grooves spaced apart on the surfaces of the first and second blades 200 and 300 facing away from the pressure relief valve housing 100, and protrusions disposed at corresponding locations on the inner circumferential wall of the gas flow path. Using this technical solution, the rotation guide 400 provides rotational guidance for the blades. Furthermore, this structure also serves to limit the maximum opening of the first and second blades 200 and 300 during operation.

[0064] An embodiment of the present invention also discloses a vehicle, comprising any one of the aforementioned body pressure relief valves, the body pressure relief valve being arranged on one side of the trunk at the rear of the vehicle, and two body pressure relief valves being arranged symmetrically on both sides of the trunk at the rear of the vehicle.

[0065] In summary, the utility model discloses a vehicle body pressure relief valve, the lower eaves 120 of which extend obliquely downward from the lower end of the gas flow channel relative to the horizontal direction. When driving or parked outdoors on a rainy day, when rainwater flows along the housing of the pressure relief valve to the lower eaves 120 of the pressure relief valve, it will flow away in time along the obliquely downward extending lower eaves 120, preventing rainwater from flowing into the vehicle through the gaps in the lower eaves 120, blades or the pressure relief valve housing 100, thereby further improving the water-proof ability of the vehicle body pressure relief valve.

[0066] Furthermore, the opening degree of the second blade 300 of the vehicle body pressure relief valve is smaller than the opening degree of the first blade 200, and the outline of the second blade 300 at the maximum opening is located within the outline range of the first blade 200 at the maximum opening. When the first blade 200 and the second blade 300 are open, they can always be covered by the first blade 200 above. Therefore, even if the pressure relief valve is arranged in an area with a large water flow, there is still no risk of water ingress, and there is a higher degree of freedom in vehicle body design and overall layout design.

[0067] Furthermore, a stepped flange structure 140 , a curved first blade 200 and a second blade 300 are provided to improve the water ingress prevention effect of the entire pressure relief valve.

[0068] It should be noted that, in addition to the implementation methods of the present invention described in the above-mentioned specific embodiments, those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this utility model are limited to this implementation method. On the contrary, the purpose of introducing the utility model in conjunction with the implementation method is to cover other options or modifications that may be extended based on the claims of the present utility model. In order to provide an in-depth understanding of the present utility model, the above description contains many specific details, and the present utility model can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present utility model, some specific details will be omitted in the description. It should be noted that, in the absence of conflict, the embodiments of the present utility model and the features in the embodiments can be combined with each other.

[0069] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0070] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the utility model.

[0071] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0072] In the description of this embodiment, it should be noted that, unless otherwise specified or limited, the terms "disposed," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this embodiment based on specific circumstances.

[0073] Although the present invention has been illustrated and described with reference to certain preferred embodiments of the present invention, it should be understood by those skilled in the art that the above description is provided to further illustrate the present invention in conjunction with specific embodiments, and that the present invention should not be construed as being limited to these descriptions. Those skilled in the art may make various changes in form and detail, including simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A vehicle body pressure relief valve, comprising a pressure relief valve housing and a blade, wherein a gas flow passage is provided through the pressure relief valve housing, and the blade is provided on the pressure relief valve housing and can open or close the gas flow passage; characterized in that: The gas flow channel is provided with an upper eave and a lower eave at the upper and lower ends in the height direction, respectively, and the lower eave extends downward from the lower end of the gas flow channel at an angle relative to the horizontal direction; The blades include a first blade and a second blade sequentially arranged along the height direction, the first blade being rotatably disposed on the inner side of the gas flow channel close to the upper eaves, and the second blade being rotatably disposed on the inner side of the gas flow channel close to the lower eaves; in With respect to the height direction, the opening degree of the second blade is smaller than that of the first blade; and when viewed along the height direction, the outline of the second blade at the maximum opening degree is located within the outline range of the first blade at the maximum opening degree.

2. The vehicle body pressure relief valve according to claim 1, wherein: The inclination angle of the lower eaves relative to the horizontal direction is in the range of 10° to 40°.

3. The vehicle body pressure relief valve according to claim 1, wherein: A stop flange is further provided above the upper eaves, and the stop flange extends upwardly from the upper surface of the upper eaves relative to the horizontal direction; and when viewed along the height direction, the outer edge of the stop flange protrudes from the upper eaves; wherein The inclination angle of the stop flange relative to the horizontal direction is in the range of 0 to 60 degrees.

4. The vehicle body pressure relief valve according to claim 3, wherein: The length of the stop flange extending out of the upper surface of the upper eave is in the range of 10 mm to 20 mm.

5. The vehicle body pressure relief valve according to claim 1, wherein: The pressure relief valve housing includes a flange structure arranged around the gas flow channel, and the cross section of the flange structure is step-shaped.

6. The vehicle body pressure relief valve according to any one of claims 1 to 5, characterized in that: When viewed from one side of the vehicle body pressure relief valve toward the blades, the first blade and the second blade are curved and protrude toward a side away from the pressure relief valve housing.

7. The vehicle body pressure relief valve according to claim 6, wherein: The rotating end of the first blade is rotatably disposed on the inner side of the gas flow channel near the upper edge, and the lower end of the first blade can be rotated to open relative to the pressure relief valve housing; the rotating end of the second blade is rotatably disposed on the inner side of the gas flow channel near the lower edge, and the upper end of the second blade can be rotated to open relative to the pressure relief valve housing; and When the first blade and the second blade are opened, the end of the second blade is always located within the projection outline of the end of the first blade when viewed along the height direction.

8. The vehicle body pressure relief valve according to claim 6, wherein: The opening angle of the first blade relative to the height direction is between 0° and 60°; The opening angle of the second blade relative to the height direction is between 0° and 50°.

9. The vehicle body pressure relief valve according to claim 6, wherein: It also includes a rotation guide portion, which includes rotation guide grooves arranged at intervals on the surface of the first blade and the second blade on the side away from the pressure relief valve housing, and protrusions arranged at corresponding positions on the inner peripheral wall of the gas flow channel.

10. A vehicle, characterized in that: The vehicle body pressure relief valve comprises the vehicle body pressure relief valve according to any one of claims 1 to 9, wherein the vehicle body pressure relief valve is arranged on one side of the trunk at the rear of the vehicle.

Images