Tail gate pressure relief structure

Abstract

The utility model relates to the technical field of vehicle tail doors, and discloses a tail door pressure relief structure which comprises a valve body used for being installed at an exhaust hole of a tail door, and the valve body is provided with an inner side end facing the interior of a vehicle and an outer side end facing the exterior of the vehicle; at least one opening hole is formed in the valve body, and the opening hole penetrates through the inner side end and the outer side end; the blade is rotationally assembled at the inner side end, a blocking position and an opening position are arranged on the rotating track of the blade, and the blade is driven to rotate from the interior of the vehicle to the exterior of the vehicle, so that the blade moves from the blocking position to the opening position; the blade is located at the blocking position and used for blocking the open hole, and the blade is located at the opening position and used for opening the open hole. The problem that when pressure relief is conducted on the interior of a small vehicle body, a pressure relief valve cannot be installed due to the fact that the space of a side wall outer plate is not enough is effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle tail door technical field, in particular to a tail door pressure relief structure. BACKGROUND

[0002] At present, the body exhaust of existing vehicle type adopts pressure relief valve installation in the lower part of side wall outer plate, and the following problems exist:

[0003] 1, the structure space of side wall outer plate is influenced, for small car side wall outer plate, cannot layout pressure relief valve installation space.

[0004] 2, exhaust effect is influenced, pressure relief valve is only designed in right side wall (is limited by cost factor), unilateral surface exhaust, and the effect is not good, and exhaust passage is beside the wheel hub, and the working environment is bad, and the exhaust passage is easily polluted by environment.

[0005] 3, the increased pressure relief valve installation modeling of side wall outer plate influences the utilization rate of stamping plate material, and there is challenge to stamping process. INVENTION CONTENTS

[0006] The utility model discloses a tail door pressure relief structure for solving the problem of unable to carry out pressure relief layout for small car, poor exhaust effect and affecting the utilization rate of side wall outer plate limited by the installation position of pressure relief valve in the prior art.

[0007] In order to realize the above-mentioned purpose, the tail door pressure relief structure provided by the embodiment of the application comprises:

[0008] A valve body is used to be installed at the exhaust hole of the tail door, and the valve body has an inner side end facing the vehicle interior and an outer side end facing the vehicle exterior.

[0009] A vane is rotatably assembled at the inner side end, and the vane has a blocking position and an opening position on the rotation track, and the vane is driven to rotate from the vehicle interior to the vehicle exterior, so that the vane moves from the blocking position to the opening position.

[0010] In some embodiments of the application, the tail door pressure relief structure further comprises a plurality of frame bodies arranged in sequence in the vertical direction, each frame body is connected to the inner side end, and the frame body and the inner side end form an installation cavity in the space surrounded thereby.

[0011] The number of the blades matches the number of the frame bodies, the blades are rotatably installed in the installation cavities, the blades are in the closed position to close the pressure relief port, and the blades are in the open position to open the pressure relief port.

[0012] In some embodiments of the present application, the frame body comprises a top plate and two side plates, the two side plates are respectively connected to the two ends of the top plate along the length direction, and the side plates are connected to the inner end at one end of the opening.

[0013] The top plate at the uppermost position is connected to the inner end, and the other top plates are spaced apart from the inner end towards the side of the opening.

[0014] The upper end of the blade is rotatably installed in the inner wall of the top plate, the bottom of the valve body has an abutting table, the lower end of the blade at the lowermost position abuts against the abutting table, and the lower end of the other blades abuts against the side of the top plate below towards the inner end.

[0015] In some embodiments of the present application, the upper surface of each top plate spaced apart from the inner end along the thickness direction of the valve body has a first slope, and the first slope is inclined from top to bottom towards the inner end.

[0016] In some embodiments of the present application, the inner wall of the top plate has a hanging rod extending along the thickness direction of the valve body, the hanging rod is provided with a plurality of hanging rods, the plurality of hanging rods are spaced apart along the width direction of the valve body, the blade is provided with a plurality of insertion holes matched with the number of the hanging rods, and the blade is hung on the hanging rod through the insertion hole, so that the blade can be rotatably assembled on the top plate.

[0017] In some embodiments of the present application, the inner wall of the top plate has a stopper extending along the width direction of the valve body, the bottom of the stopper has a perforation for the hanging rod to pass through, and the perforation penetrates through the bottom of the stopper.

[0018] The stopper is inclined from top to bottom away from the inner wall of the top plate, so that a limiting cavity is formed between the stopper and the inner wall of the top plate, and the upper end of the blade is in the limiting cavity for stopping the blade.

[0019] In some embodiments of the present application, the tailgate pressure relief structure further comprises a sealing ring, the sealing ring is arranged on the inner end, and the sealing ring surrounds the outer periphery of the valve body.

[0020] Along the thickness direction of the valve body, the sealing ring extends towards the inside of the vehicle.

[0021] In some embodiments of the present application, the tailgate pressure relief structure further comprises a water-blocking side plate, which is arranged at the outer end and surrounds the outer periphery of the valve body.

[0022] In the thickness direction of the valve body, the water-blocking side plate extends outward and covers at least the upper half of the opening.

[0023] In some embodiments of the present application, the tailgate pressure relief structure further comprises a clamping member for mounting the valve body at the tailgate exhaust hole.

[0024] The clamping member is arranged at the inner end, and each of the upper and lower ends of the valve body is provided with at least one clamping member.

[0025] In some embodiments of the present application, the clamping member comprises a base connected to the valve body and an elastic clamping portion.

[0026] In the thickness direction of the valve body, the elastic clamping portion has a first end close to the opening and a second end away from the opening, the second end is connected to the base, and the first end is arranged at a distance from the inner end.

[0027] In the height direction of the valve body, the elastic clamping portion has a clearance between the side of the frame body and the frame body, and the side of the elastic clamping portion away from the frame body has a second slope, which is arranged to incline away from the frame body from the first end to the second end; the second end has a clamping groove for clamping the tailgate panel.

[0028] Compared with the prior art, the tailgate pressure relief structure of the present application has the following advantages: the installation position of the traditional pressure relief valve is adjusted from the side wall outer plate to the rear tailgate of the vehicle, effectively solving the problem that the pressure relief valve cannot be installed due to insufficient space of the side wall outer plate when the pressure is relieved inside the small vehicle body; at the same time, the pressure relief valve is installed at the rear tailgate, so that the exhaust effect is better, and since the pressure relief valve is arranged away from the hub, the exhaust passage will not be easily polluted by the external environment, ensuring the cleanliness of the internal environment of the exhaust passage; since it is no longer arranged at the side wall outer plate of the vehicle, the utilization rate of the side wall outer plate material is improved. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 A schematic diagram of the pressure relief structure of the present application is shown;

[0030] Figure 2 A schematic diagram of the pressure relief structure of the present application is shown; Figure 1 An enlarged schematic diagram of the structure at A in the present application is shown;

[0031] Figure 3Another view angle schematic view of the pressure relief structure of the utility model shows that

[0032] Figure 4 The outward view schematic view of the pressure relief structure of the utility model shows that

[0033] Figure 5 The utility model discloses Figure 4 The structure schematic view of A-A section of the utility model shows that

[0034] Figure 6 The utility model discloses Figure 5 The structure enlarged schematic view of B of the utility model shows that

[0035] Figure 7 The utility model discloses the connection relation schematic view of blade, valve body, tailgate shows that

[0036] Figure 8 The installation schematic view of the pressure relief structure of the utility model shows that

[0037] Figure 9 The utility model discloses Figure 8 The structure enlarged schematic view of C of the utility model shows that

[0038] Figure 10 The installation schematic view of the pressure relief structure of the utility model shows that

[0039] Figure 11 The structure enlarged schematic view of the pressure relief structure of the utility model shows that

[0040] Figure 12 The utility model discloses Figure 11 The structure enlarged schematic view of D of the utility model shows that

[0041] Figure 13 The blade structure schematic view of the utility model shows that

[0042] In the drawing, 1, valve body;11, opening;12, abutment platform;

[0043] 2, blade;21, insertion hole;

[0044] 3, frame body;31, installation cavity;32, pressure relief port;33, top plate piece;331, first slope;332, stop piece;3321, perforation;34, side plate piece;

[0045] 4, hanging rod;

[0046] 5, sealing ring;

[0047] 6, water retaining side plate;

[0048] 7, clamping piece;71, base;72, elastic clamping portion;721, first end;722, second end;723, second slope;724, clamping groove;73, avoiding space;

[0049] 8. Tailgate; 9. Reinforcing rib. DETAILED DESCRIPTION

[0050] The specific embodiments of the present application will be further described in conjunction with the drawings and examples. The following examples are used to illustrate the present application, but not to limit the scope of the present application.

[0051] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. It should be understood that the terms "first", "second" and the like are used to describe various information in the present application, but these information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, the "first" information can also be referred to as "second" information without departing from the scope of the present application, and similarly, the "second" information can also be referred to as "first" information.

[0052] As shown in Figures 1-13 The present application embodiment provides a tailgate pressure relief structure, which comprises a valve body 1 and a vane 2. The valve body 1 is used to be installed at the exhaust hole of the vehicle tailgate 8, and the valve body 1 has an inner side end facing the vehicle interior and an outer side end facing the vehicle exterior. At least one opening hole 11 is arranged on the valve body 1, and the opening hole 11 penetrates the inner side end and the outer side end. The vane 2 is rotatably installed at the inner side end, and has a blocking position and an opening position on the rotation track of the vane 2. The vane 2 is driven to rotate from the vehicle interior to the vehicle exterior, so that the vane 2 moves from the blocking position to the opening position. When the vane 2 is at the blocking position, the opening hole 11 is blocked, so that the vehicle interior space is not connected with the outside. When the vane 2 is at the opening position, the opening hole 11 is opened, and the vehicle interior space is connected with the outside space.

[0053] In the specific implementation of the embodiment, when the air pressure in the vehicle is consistent with the air pressure outside, the blade 2 is in the blocking position under the action of no external force and blocks the opening 11; when the vehicle door or tailgate 8 is closed, the air pressure in the vehicle environment increases, and the airflow forces the blade 2 to rotate from the inside of the vehicle to the outside of the vehicle, thereby causing the blade 2 to rotate from the blocking position to the opening position, so that the opening 11 is opened to discharge the air in the vehicle to the outside. When the air pressure in the vehicle is consistent with the air pressure outside, the blade 2 moves from the opening position to the blocking position under the action of its own gravity and blocks the opening 11 again. The valve body 1 and the blade 2 in the scheme form a pressure relief structure, and the pressure relief structure is installed at the tailgate 8 of the vehicle, preferably at the middle position of the tailgate 8, so that the exhaust is more smooth compared to the traditional installation at the outer panel of the vehicle side wall, thereby improving the exhaust effect in the vehicle. The pressure relief structure is arranged away from the vehicle hub, which can reduce the pollution of the pressure relief structure caused by the external pollutants mixed in the vehicle hub during rotation. At the same time, arranging the pressure relief structure at the tailgate 8 of the vehicle also reduces the stamping process difficulty of the outer panel of the vehicle side wall, and avoids the problem of reducing the utilization rate of the panel caused by the increase of the installation shape of the pressure relief structure on the side wall.

[0054] As shown in some embodiments of the present application, Figure 1 The tailgate pressure relief structure further includes a plurality of frame bodies 3 arranged in sequence along the vertical direction, each frame body 3 is connected to the inner side end, as shown in Figure 5 The frame body 3 and the space surrounded by the inner side end form an installation cavity 31, and each installation cavity 31 is in communication with the opening 11, as shown in Figure 6 The end of the frame body 3 away from the opening 11 has a pressure relief port 32 in communication with the installation cavity 31 and the outside; the number of blades 2 is matched with the number of frame bodies 3 (one blade 2 is arranged in each frame body 3), and the blade 2 is rotatably installed in the installation cavity 31. When the blade 2 is not subjected to external force, the blade 2 is in the blocking position and blocks the pressure relief port 32 (so that the vehicle interior environment is not in communication with the outside); when the blade 2 is subjected to the action force of the airflow, the blade 2 is forced to rotate from the inside of the vehicle to the outside of the vehicle, so that the blade 2 is in the opening position and the pressure relief port 32 is opened.

[0055] In the embodiment, a plurality of frame bodies 3 are sequentially arranged at the inner side end of the valve body 1, and the frame body 3 and the inner side end of the valve body 1 form an installation cavity 31, and the blade 2 is rotatably assembled in the installation cavity 31. When the blade 2 is subjected to the impact force of the airflow in the vehicle, the pressure relief port 32 in communication with the space in the vehicle will not be exposed to the outside during the rotation of the blade 2 in the installation cavity 31, which can better avoid the entry of foreign matter in the external environment into the vehicle through the pressure relief port 32 when the blade 2 rotates to discharge the air in the vehicle.

[0056] As shown in some embodiments of the present application, Figure 1As shown in the drawings, the frame body 3 comprises a top plate 33 and two side plates 34, the two side plates 34 are respectively connected to the two ends of the top plate 33 along the length direction, and the side plate 34 is connected to the inner side end at one end facing the opening 11. Figure 5 As shown in the drawings, the top plate 33 at the uppermost is connected to the inner side end, and the remaining top plates 33 are arranged at intervals from the inner side end at one side facing the opening 11. The upper end of the blade 2 is rotatably installed on the inner side wall of the top plate 33, and the bottom of the valve body 1 has an abutting table 12. When the blade 2 is in a natural state (blocking position), the lower end of the blade 2 at the lowermost abuts against the abutting table 12, and the lower end of the remaining blade 2 abuts against the side of the top plate 33 below it facing the inner side end, thereby achieving the blocking of the pressure relief port 32 and the isolation of the communication between the vehicle interior and the external environment.

[0057] As shown in the drawings, Figure 1 As shown in the drawings, a plurality of reinforcing ribs 9 are arranged at intervals along the width direction of the valve body 1 on the side of the frame body 3 away from the inner side end. The upper and lower ends of each reinforcing rib 9 are respectively connected between two adjacent frame bodies 3. The arrangement of the reinforcing rib 9 helps to enhance the overall strength of the structure of the valve body 1.

[0058] As shown in the drawings, Figure 5 , Figure 6 As shown in the drawings, the upper surface of each top plate 33 arranged at intervals along the thickness direction of the valve body 1 from the inner side end has a first slope 331 arranged obliquely from top to bottom towards the inner side end (the height of the first slope 331 gradually decreases from the vehicle interior to the vehicle exterior). The arrangement of the first slope 331 can better prevent rainwater in the external environment from flowing into the vehicle interior along the upper surface of the top plate 33 when the blade 2 rotates from the blocking position to the opening position, that is, when the pressure relief port 32 is in an open state.

[0059] As shown in the drawings, Figure 6 , Figure 11 As shown in the drawings, the inner side wall of the top plate 33 has a hanging rod 4 extending along the thickness direction of the valve body 1. A plurality of hanging rods 4 are arranged at intervals along the width direction of the valve body 1. Figure 13 As shown in the drawings, the blade 2 is provided with a plurality of insertion holes 21 matched in number with the hanging rods 4. In this scheme, the size of the insertion hole 21 is greater than the cross-sectional size of the hanging rod 4, so that the blade 2 can be hung on the hanging rod 4 through the insertion hole 21 while being able to rotate relative to the hanging rod 4.

[0060] As shown in the drawings, Figure 6 , Figure 11 , Figure 12As shown, the inner side wall of the top plate 33 has a stopper 332 extending along the width direction of the valve body 1, the bottom of the stopper 332 has a through hole 3321 for the hanging rod 4 to pass through, the through hole 3321 penetrates through the bottom of the stopper 332; the stopper 332 is arranged from top to bottom to be inclined away from the inner side wall of the top plate 33, so that a limiting cavity is formed between the stopper 332 and the inner side wall of the top plate 33, the upper end of the blade 2 is in the limiting cavity, for stopping the blade 2 from falling off the hanging rod 4, and also limiting the rotation angle of the blade 2 to a certain extent.

[0061] As shown in some embodiments of the present application, Figure 3 , Figure 5 As shown, the tail door pressure relief structure further comprises a sealing ring 5, the sealing ring 5 is arranged at the inner side end, and the sealing ring 5 is arranged around the outer periphery of the valve body 1; along the thickness direction of the valve body 1, the sealing ring 5 extends towards the inside of the vehicle; as shown, Figure 7 when the pressure relief structure is installed at the exhaust hole of the tail door 8, the sealing ring 5 just abuts against the outer side wall of the tail door 8, for plugging the gap between the valve body 1 and the tail door 8, to ensure the sealing performance of the connection between the valve body 1 and the tail door 8.

[0062] As shown in some embodiments of the present application, Figure 3 As shown, the tail door pressure relief structure further comprises a water-blocking side plate 6, the water-blocking side plate 6 is arranged at the outer side end, and the water-blocking side plate 6 is arranged around the outer periphery of the valve body 1; along the thickness direction of the valve body 1, the water-blocking side plate 6 extends towards the outside of the vehicle, and the water-blocking side plate 6 at least wraps the upper half area of the opening 11; in this scheme, the arrangement of the water-blocking side plate 6 further reduces the probability of rainwater in the external environment entering the vehicle interior, and the water-blocking side plate 6 is arranged at the outer side end and at least wraps the upper half area of the opening 11, which can better prevent rainwater in the external environment from invading the vehicle interior when the blade 2 is in the open position.

[0063] As shown in some embodiments of the present application, Figure 1 , Figure 2 As shown, the tail door pressure relief structure further comprises a clamping piece 7, the clamping piece 7 is used for mounting the valve body 1 at the exhaust hole of the tail door 8; the clamping piece 7 is arranged at the inner side end, and each of the upper and lower ends of the valve body 1 is provided with at least one clamping piece 7.

[0064] As shown in some embodiments of the present application, Figure 2 As shown, the clamping piece 7 comprises a base 71 connected with the valve body 1 and an elastic clamping portion 72; as shown, Figure 5As shown, along the thickness direction of the valve body 1, the elastic clamping portion 72 has a first end 721 close to the opening 11, a second end 722 away from the opening 11, the second end 722 is connected to the base 71, and the first end 721 is arranged away from the inner side end; along the height direction of the valve body 1, the elastic clamping portion 72 has a avoiding space 73 between the side of the frame 3 and the frame 3, and the side of the elastic clamping portion 72 away from the frame 3 has a second slope 723, the second slope 723 is arranged to be inclined from the first end 721 to the second end 722 away from the frame 3; the second end 722 has a clamping groove 724 for clamping the tail door 8 panel.

[0065] When the pressure relief structure in the present scheme is installed at the exhaust hole of the tail door 8, first, the valve body 1 is arranged with the frame 3 side towards the tail door 8, and the position of the valve body 1 and the exhaust hole on the tail door 8 is adjusted to correspond, then the frame 3 arranged at the inner side end of the valve body 1 is first passed through the exhaust hole and enters the vehicle interior, then the valve body 1 is continuously moved in the direction of the vehicle interior, so that the tail door 8 panel at the upper and lower ends of the exhaust hole is pressed against the second slope 723, and the elastic clamping portion 72 is forced to move towards the avoiding space 73, so that the tail door 8 panel passes over the second slope 723 (at this time, the elastic clamping portion 72 is no longer subjected to the pressing force from the tail door 8 panel, and moves away from the avoiding space 73), so that the tail door 8 panel is clamped in the clamping groove 724 arranged at the second end 722 (as shown), and the elastic clamping portion 72 still has a tendency to move towards the initial position (so that the elastic clamping portion 72 and the tail door 8 panel have a certain abutting force) at this time, so that the valve body 1 is clamped and installed at the exhaust hole of the tail door 8. Figure 7

[0066] The working process of the utility model is: when the air pressure inside the vehicle and the air pressure of the external environment are consistent, the blade 2 is in a natural state, that is, in a plugging position, for realizing plugging of the pressure relief port 32, thereby isolating the communication between the vehicle interior and the external environment, and avoiding the foreign matters in the external environment from entering the vehicle interior; when the vehicle door or the tail door 8 is closed, the pressure inside the vehicle increases, thereby forcing the blade 2 to rotate from the vehicle interior side to the vehicle exterior side, that is, making the blade 2 rotate from the plugging position to the opening position, thereby opening the pressure relief port 32, and making the excess air inside the vehicle discharge outward through the opened pressure relief port 32; when the air pressure inside the vehicle and the air pressure of the external environment are restored to be consistent, the blade 2 rotates from the opening position to the plugging position again under the action of its own gravity, and plugs the pressure relief port 32, thereby isolating the vehicle interior and the external environment.

[0067] ​In conclusion, the tail door pressure relief structure provided by the embodiments of the present application adjusts the installation position of the traditional pressure relief valve from the side outer plate to the rear tail door 8 of the vehicle, effectively solves the problem that the pressure relief valve cannot be installed due to insufficient space of the side outer plate when the pressure is relieved inside the body of the small vehicle, and simultaneously installs the pressure relief valve at the rear tail door 8, so that the exhaust effect is better, and because the pressure relief valve is arranged at a position far away from the hub, the exhaust passage is not easily polluted by the external environment, and the cleanliness of the internal environment of the exhaust passage is ensured; because the pressure relief valve is no longer arranged at the side outer plate of the vehicle, the utilization rate of the material of the side outer plate is improved.

[0068] The above only describes the preferred embodiments of the present application, and it should be noted that for ordinary skilled persons in the technical field, some improvements and replacements can be made without departing from the technical principles of the present application, and these improvements and replacements should also be considered as the protection scope of the present application.

Claims

1. A tailgate pressure relief structure, characterized by, The application relates to a tailgate pressure relief structure. The tailgate pressure relief structure comprises a valve body (1) arranged at an exhaust hole of a tailgate (8), wherein the valve body (1) has an inner side end facing the inside of the vehicle and an outer side end facing the outside of the vehicle; at least one opening (11) is arranged on the valve body (1) and penetrates the inner side end and the outer side end; a vane (2) is rotatably arranged at the inner side end, and the vane (2) has a blocking position and an opening position on a rotation track; the vane (2) is driven to rotate from the inside of the vehicle to the outside of the vehicle, so that the vane (2) moves from the blocking position to the opening position. The vane (2) blocks the opening (11) in the blocking position, and the vane (2) opens the opening (11) in the opening position. The tailgate pressure relief structure further comprises a plurality of frame bodies (3) arranged in sequence along the vertical direction, each of the frame bodies (3) is connected to the inner side end, and the frame body (3) and the inner side end form an installation cavity (31); each of the installation cavities (31) is in communication with the opening (11), and one end of the frame body (3) away from the opening (11) has a pressure relief port (32) in communication with the outside and the installation cavity (31).

2. The tailgate pressure relief structure of claim 1, wherein The number of vanes (2) matches the number of frame bodies (3), the vane (2) is rotatably arranged in the installation cavity (31), the vane (2) blocks the pressure relief port (32) in the blocking position, and the vane (2) opens the pressure relief port (32) in the opening position. The frame body (3) comprises a top plate (33) and two side plates (34), the two side plates (34) are respectively connected to two ends of the top plate (33) along the length direction, and one end of the side plate (34) facing the opening (11) is attached to the inner side end.

3. The tailgate pressure relief structure of claim 2, wherein, The top plate (33) at the uppermost position is attached to the inner side end, and the remaining top plates (33) are arranged in a spaced mode on one side of the inner side end facing the opening (11). The upper end of the vane (2) is rotatably arranged at the inner side wall of the top plate (33), and the bottom of the valve body (1) has an abutting table (12); the lower end of the vane (2) at the lowermost position abuts against the abutting table (12) in the blocking position, and the lower end of the remaining vanes (2) abuts against one side of the top plate (33) below the vane (2) and facing the inner side end. In the thickness direction of the valve body (1), the upper surface of each of the top plates (33) arranged in a spaced mode on the inner side end has a first slope (331) arranged in a tilted mode from top to bottom and facing the inner side end.

4. The tailgate pressure relief structure of claim 3, wherein, ​ 5. The tailgate pressure relief structure of claim 3, wherein The inner side wall of the top plate (33) has hanging rods (4) extending along the thickness direction of the valve body (1), and a plurality of the hanging rods (4) are arranged at intervals along the width direction of the valve body (1), the vane (2) is provided with a number of insertion holes (21) matched with the number of the hanging rods (4), and the vane (2) is hung on the hanging rods (4) through the insertion holes (21) so that the vane (2) can be rotatably assembled on the top plate (33).

6. The tailgate pressure relief structure of claim 5, wherein, The inner side wall of the top plate (33) has a stop piece (332) extending along the width direction of the valve body (1), and the bottom of the stop piece (332) has a through hole (3321) for the hanging rod (4) to pass through. The stop piece (332) is arranged to be inclined from top to bottom towards the direction away from the inner side wall of the top plate (33), so that a limiting cavity is formed between the stop piece (332) and the inner side wall of the top plate (33), and the upper end of the vane (2) is located in the limiting cavity for stopping the vane (2).

7. The tailgate pressure relief structure of any one of claims 1-6, wherein, The tail door pressure relief structure further comprises a sealing ring (5), which is arranged at the inner side end and surrounds the outer periphery of the valve body (1). Along the thickness direction of the valve body (1), the sealing ring (5) extends towards the inside of the vehicle.

8. The tailgate pressure relief structure of any one of claims 1-6, wherein, The tail door pressure relief structure further comprises a water retaining side plate (6), which is arranged at the outer side end and surrounds the outer periphery of the valve body (1). Along the thickness direction of the valve body (1), the water retaining side plate (6) extends towards the outside of the vehicle, and the water retaining side plate (6) at least wraps the upper half area of the opening (11).

9. The tailgate pressure relief structure of claim 2, wherein, The tail door pressure relief structure further comprises a clamping piece (7) for mounting the valve body (1) at the exhaust hole of the tail door (8). The clamping piece (7) is arranged at the inner side end, and at least one clamping piece (7) is arranged at each of the upper and lower ends of the valve body (1).

10. The tailgate pressure relief structure of claim 9, wherein, The clamping piece (7) comprises a base (71) connected with the valve body (1) and an elastic clamping part (72). Along the thickness direction of the valve body (1), the elastic clamping part (72) has a first end (721) close to the opening (11) and a second end (722) away from the opening (11), the second end (722) is connected to the base (71), and the first end (721) is arranged at intervals from the inner side end. Along the height direction of the valve body (1), the elastic clamping part (72) has a clearance space (73) between the side of the elastic clamping part (72) facing away from the frame body (3) and the frame body (3), and the side of the elastic clamping part (72) facing away from the frame body (3) has a second slope (723) arranged to be inclined from the first end (721) to the second end (722) towards the direction away from the frame body (3). The second end (722) has a clamping groove (724) for clamping the sheet metal of the tail door (8).

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