Back door ventilation structure and vehicle body

Abstract

The invention relates to the technical field of automobile parts, in particular to a back door ventilation structure and an automobile body, and the back door ventilation structure comprises a ventilation assembly and a cover body; the ventilation assembly is arranged on the back door, and a ventilation channel is arranged in the ventilation assembly; two blade layers are sequentially arranged in the ventilation channel; when the pressures on the inner sides of the two blade layers respectively reach a preset pressure value, the two blade layers are opened; a passing cavity is formed in the cover body, and an opening of the passing cavity faces the ventilation channel and covers the outer side of the back door; a passing opening is formed in the bottom of the cover body, and the ventilation channel, the passing cavity and the passing opening are sequentially communicated. By means of the technical scheme, normal ventilation can be prevented from being affected, meanwhile, the probability that sealing of the ventilation channel is abnormally relieved in the driving process is reduced, the situation that gaps of any blade layer directly become a water vapor or wind or dust entering path is avoided, and the waterproof, air-proof and dust-proof effects are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile parts, and in particular relates to a rear door ventilation structure and a vehicle body. Background Art

[0002] When opening and closing car doors, corresponding ventilation design is required to maintain the balance of air pressure inside and outside the car. However, in order to ensure the comfort of the car during driving and protect passengers from the influence of water leakage, wind noise or dust, corresponding waterproof, airproof and dustproof treatment should be carried out while implementing the ventilation design.

[0003] The ventilation of existing automobiles is generally achieved by setting a ventilation structure on the vehicle body, wherein the ventilation structure is provided with blades capable of one-way ventilation. When fresh air is introduced into the vehicle body, the pressure inside the vehicle body will increase accordingly until the pressure inside the vehicle body is greater than that outside the vehicle body, thereby driving the blades to open and achieve ventilation. When the pressure outside the vehicle body is greater than that inside the vehicle body, the blades will remain closed to achieve waterproof, air-proof and dust-proof, and ensure sealing. However, even if the blades are installed in place, they are still inevitably affected by the manufacturing tolerance of the components themselves, resulting in a gap between the blades and the components used to fix the blades, making the gap an entry path for water vapor, wind or dust. In addition, when driving in extreme or specific road conditions such as rainy days, high speeds or in the wild, the blades are also very likely to open due to external influences, so that the waterproof, air-proof and dust-proof effects cannot be normally achieved due to the release of the sealing of the ventilation structure, affecting the comfort during driving. Summary of the invention

[0004] In view of the above problems, the present invention provides a rear door ventilation structure and a vehicle body, wherein the rear door ventilation structure comprises:

[0005] A ventilation assembly is arranged on the back door, and a ventilation channel is arranged in the ventilation assembly;

[0006] Two blade layers are sequentially arranged in the ventilation channel;

[0007] When the pressure inside the two blade layers reaches a preset pressure value, the two blade layers open to connect the inside and outside of the back door through the ventilation channel;

[0008] A cover body, in which a through cavity is arranged, and the opening of the through cavity is arranged on the outer side of the back door toward the ventilation channel;

[0009] A through opening is provided at the bottom of the cover body, and the ventilation channel, the through cavity and the through opening are connected in sequence.

[0010] In some specific embodiments, the ventilation assembly includes:

[0011] An exoskeleton is disposed on the back door, and the exoskeleton encloses the ventilation passage;

[0012] One of the blade layers is arranged at one end of the ventilation passage close to the inner side of the rear door, and the other blade layer is arranged at one end of the ventilation passage close to the outer side of the rear door.

[0013] In some specific embodiments, the blade layer includes:

[0014] An inner frame, wherein a plurality of the inner frames are provided, and the plurality of the inner frames are evenly arranged in the ventilation passage and both ends of each of the inner frames are connected to the outer frame;

[0015] The outer frame and the plurality of inner frames together form a plurality of ventilation slots;

[0016] Blades are movably arranged in each ventilation slot.

[0017] In some specific embodiments, the top of the blade is hingedly connected to a side of the top groove wall of the corresponding ventilation groove close to the inner side of the rear door, and the bottom of the blade is movably mounted on a side of the bottom groove wall of the ventilation groove close to the outer side of the rear door.

[0018] In some specific embodiments, there are two ventilation channels, which are arranged adjacent to each other.

[0019] In some specific embodiments, a vent is provided on the back door, and the exoskeleton is embedded in the vent;

[0020] A first windshield strip is sandwiched between the side of the outer frame and the back door;

[0021] The interference amount of the first windshield strip ranges from 3.0 mm to 3.4 mm.

[0022] In some specific embodiments, a second windshield strip is sandwiched between the side of the cover and the back door;

[0023] The interference amount of the second windshield strip ranges from 3.4 mm to 3.8 mm.

[0024] In some specific embodiments, the bottom side of the cover body is spaced apart from the back door;

[0025] The bottom side of the cover body and the back door together form the passage.

[0026] In some specific embodiments, the cover is a spare tire cover;

[0027] The through cavity is arranged on a side of the spare tire cover close to the rear door;

[0028] A storage cavity for placing a spare tire is provided on a side of the spare tire cover away from the rear door;

[0029] The opening of the through cavity is opened at a side of the through cavity away from the accommodating cavity.

[0030] A vehicle body based on the same concept includes: a rear door ventilation structure as described in any of the above specific embodiments.

[0031] Compared with the prior art, the back door ventilation structure of the present invention has at least the following advantages: when any of the two blade layers arranged in sequence in the ventilation channel is opened alone, the sealing of the ventilation channel will not be affected. Only when the two blade layers are opened at the same time can the ventilation channel be normally ventilated, thereby greatly reducing the probability of abnormal release of the sealing of the ventilation channel during driving. At the same time, the two blade layers arranged in sequence in the ventilation channel can prevent the gap between any blade layer from directly becoming the entry path of water vapor, wind or dust, and hinder the entry of water vapor, wind and dust, thereby improving the waterproof, airproof and dustproof effects. In addition, the through cavity of the cover body is arranged to cover the ventilation channel from the outside of the back door, so that the ventilation channel, the through cavity and the through port arranged at the bottom of the cover body are connected in sequence, thereby avoiding affecting the normal ventilation and reducing the direct impact of external water vapor, wind or dust on the ventilation channel, further reducing the probability of abnormal release of the sealing of the ventilation channel during driving, and improving the waterproof, airproof and dustproof effects.

[0032] Compared with the prior art, the vehicle body of the present invention has at least the following advantages: since it includes the above-mentioned tailgate ventilation structure, it has the same beneficial effects as the above-mentioned tailgate ventilation structure, and therefore, it will not be described in detail here.

[0033] Other features and advantages of the present invention will be described in the following description, and partly become obvious from the description, or be understood by implementing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1A schematic cross-sectional view of a rear door ventilation structure in an embodiment of the present invention is shown;

[0036] Figure 2 A cross-sectional schematic diagram of a ventilation assembly and a rear door in an embodiment of the present invention is shown;

[0037] Figure 3 A schematic cross-sectional view of a ventilation assembly in an embodiment of the present invention is shown;

[0038] Figure 4 A front view schematic diagram of a ventilation assembly and a back door in an embodiment of the present invention is shown;

[0039] Figure 5 A front view schematic diagram of a rear door ventilation structure in an embodiment of the present invention is shown.

[0040] In the figure, 100, ventilation assembly; 110, outer frame; 111, first wind shield; 120, blade layer; 121, inner frame; 122, blade; 200, cover body; 210, second wind shield; 300, back door. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] Reference Figure 1 The present invention provides a rear door ventilation structure, comprising: a ventilation component 100 and a cover body 200. The ventilation component 100 is arranged on the rear door 300, and a ventilation channel is arranged in the ventilation component 100. Two blade layers 120 are arranged in sequence in the ventilation channel. When the pressure on the inner side of the two blade layers 120 reaches a preset pressure value, the two blade layers 120 open, and the inner side and the outer side of the rear door 300 are connected through the ventilation channel. A through cavity is arranged in the cover body 200, and the opening of the through cavity is arranged on the outer side of the rear door 300 facing the ventilation channel. A through port is arranged at the bottom of the cover body 200, and the ventilation channel, the through cavity and the through port are connected in sequence.

[0043] Specifically, the ventilation assembly 100 is arranged on the back door 300, and a ventilation channel is arranged in the ventilation assembly 100, through which the inner side and the outer side of the back door 300 can be connected, so as to perform ventilation. Among them, two blade layers 120 are arranged in sequence in the ventilation channel, and the ventilation channel can be shielded by the two blade layers 120. When the pressure inside the blade layer 120 reaches a preset pressure value, the blade layer 120 opens. However, when the pressure inside only one blade layer 120 reaches the preset pressure, that is, when any blade layer 120 is opened alone, the other blade layer 120 can still shield the ventilation channel, so as not to affect the sealing of the ventilation channel. Only when the pressure inside the two blade layers 120 reaches the preset pressure, the two blade layers 120 will open at the same time, so that the ventilation channel can be ventilated normally, which greatly reduces the probability of abnormal release of the sealing of the ventilation channel during driving. At the same time, even if there is a gap between the blade layers 120, the probability that the gaps between the two blade layers 120 completely correspond to each other is very small, so that the gaps between the blade layers 120 can be avoided from becoming the entry path of water vapor, wind or dust by the two blade layers 120 arranged in sequence, thereby hindering the entry of water vapor, wind and dust and increasing the difficulty of water vapor, wind and dust to enter. The through cavity is arranged in the cover body 200, and an opening is provided on one side of the through cavity. The cover body 200 is arranged on the outer wall of the back door 300, and the opening of the through cavity faces one end of the ventilation channel close to the outer side of the back door 300 and is covered on the outer wall of the back door 300, so that the ventilation channel and the through cavity are connected. At the same time, a through port is provided at the bottom of the cover body 200, so that the ventilation channel, the through cavity and the through port are connected in sequence, so that the direct impact of external water vapor, wind or dust on the ventilation channel can be reduced while avoiding affecting the normal ventilation, thereby further reducing the probability of abnormal release of the sealing of the ventilation channel during driving, and improving the waterproof, airproof and dustproof effects.

[0044] In some specific embodiments of the present invention, referring to Figure 2 The ventilation assembly 100 includes an outer frame 110. The outer frame 110 is arranged on the back door 300, and the outer frame 110 encloses a ventilation channel. One blade layer 120 is arranged at one end of the ventilation channel close to the inner side of the back door 300, and the other blade layer 120 is arranged at one end of the ventilation channel close to the outer side of the back door 300.

[0045] Specifically, the exoskeleton 110 is arranged on the rear door 300, and the exoskeleton 110 is a shell-like structure, so that a ventilation channel is enclosed on the rear door 300 through the inner wall of the exoskeleton 110, a blade layer 120 is arranged at one end of the channel close to the inner side of the rear door 300 and is movably connected to the exoskeleton 110, and another blade layer 120 is arranged at one end of the ventilation channel close to the outer side of the rear door 300 and is movably connected to the exoskeleton 110. The structure is flexible and simple, and is easy to install and disassemble.

[0046] In some specific embodiments of the present invention, referring to Figure 3 The blade layer 120 includes: an inner frame 121 and blades 122. The inner frame 121 is provided with a plurality of inner frames 121, and the plurality of inner frames 121 are evenly arranged in the ventilation passage and both ends of each inner frame 121 are connected to the outer frame 110. The outer frame 110 and the plurality of inner frames 121 are combined to form a plurality of ventilation slots. A blade 122 is movably arranged in each ventilation slot.

[0047] Specifically, there are multiple inner frames 121, and the multiple inner frames 121 are arranged in vertical rows as a whole. The multiple inner frames 121 in the same vertical row are evenly arranged in the vertical direction. The two ends of each inner frame 121 extend in the horizontal direction until they are fixedly connected to the side walls of the outer frame 110, so that the multiple inner frames 121 can enclose the outer frame 110 in the vertical direction to form multiple ventilation slots. Multiple blades 122 are arranged in a one-to-one correspondence with the multiple ventilation slots. The blades 122 are movably arranged in the corresponding ventilation slots. When the blades 122 are closed, the corresponding ventilation slots can be covered by the blades 122. The structure is flexible and simple, and it is easy to install and disassemble.

[0048] In some specific embodiments of the present invention, referring to Figure 3 The top of the blade 122 is hingedly connected to one side of the top groove wall of the corresponding ventilation groove close to the inner side of the back door 300, and the bottom of the blade 122 is movably mounted on one side of the bottom groove wall of the ventilation groove close to the outer side of the back door 300.

[0049] Specifically, the top of the blade 122 is hingedly connected to one side of the groove wall at the top of the ventilation groove near the inner side of the back door 300, so that the blade 122 can rotate with the top of the blade 122 as the axis. The bottom of the blade 122 is movably arranged on the side of the groove wall at the bottom of the ventilation groove near the outer side of the back door 300, so that the installed blade 122 can be in an inclined state, which can facilitate the opening and closing of the blade 122 while ensuring the stability of the blade 122. When the pressure inside the blade 122 does not reach the preset pressure, due to the inclined arrangement of the blade 122, under the action of the gravity of the blade 122, the bottom of the blade 122 can be stably arranged on the groove wall at the bottom of the ventilation groove, thereby sealing the ventilation groove. When the pressure inside the blade 122 reaches the preset pressure, also due to the inclined arrangement of the blade 122, the blade 122 only needs to rotate at a small angle with the top of the blade 122 as the axis to achieve the complete opening of the blade 122, so that the ventilation groove is unobstructed.

[0050] In some specific embodiments of the present invention, referring to Figure 4 There are two ventilation channels, and the two ventilation channels are arranged adjacent to each other.

[0051] Specifically, the large-volume shell structure of the exoskeleton 110 is provided with a partition structure in the middle of the exoskeleton 110, so that the exoskeleton 110 can be divided into two in the middle through the partition structure, so that two ventilation channels can be directly formed by directly enclosing the partition structure and the inner wall of the exoskeleton 110, further expanding the area that can be used for ventilation and ensuring the ventilation effect.

[0052] In some specific embodiments of the present invention, referring to Figure 3 The back door 300 is provided with a vent, and the outer frame 110 is embedded in the vent. A first windshield strip 111 is sandwiched between the side of the outer frame 110 and the back door 300. The interference amount of the first windshield strip 111 ranges from 3.0 mm to 3.4 mm.

[0053] Specifically, the vent is provided on the back door 300, and the inner side and the outer side of the back door 300 are connected through the vent. The exoskeleton 110 is embedded in the vent, and a bending structure is provided on the outer wall of the exoskeleton 110, and the bending structure is arranged around the outer periphery of the exoskeleton 110, and there is a gap between the inner side of the bending structure and the outer side of the back door 300, and the first windshield strip 111 is arranged between the inner side of the bending structure and the outer side of the back door 300, and the first windshield strip 111 is clamped by the inner side of the bending structure and the outer side of the back door 300. The first windshield strip 111 is also arranged around the outer periphery of the exoskeleton 110, so as to cover the gap between the outer wall of the exoskeleton 110 and the back door 300, and ensure the sealing between the exoskeleton 110 and the back door 300. Among them, the interference range of the first wind shield 111 is 3.0 mm to 3.4 mm, that is, the first wind shield 111 is clamped by the inner side of the bending structure and the outer side of the tailgate 300, so that the first wind shield 111 is compressed until the compression amount of the first wind shield 111 reaches 3.0 mm to 3.4 mm, thereby further improving the sealing between the exoskeleton 110 and the tailgate 300.

[0054] Furthermore, the interference fit of the first wind shield strip 111 is 3.4 mm, which can ensure the sealing effectiveness of the first wind shield strip 111 and prevent the first wind shield strip 111 from falling off easily.

[0055] In some specific embodiments of the present invention, referring to Figure 1 A second windshield strip 210 is sandwiched between the side of the cover body 200 and the back door 300. The interference amount of the second windshield strip 210 ranges from 3.4 mm to 3.8 mm.

[0056] Specifically, the second wind shield strip 210 is arranged between the side of the cover body 200 and the outer side of the rear door 300, and the second wind shield strip 210 is clamped by the side of the cover body 200 and the outer side of the rear door 300, and the second wind shield strip 210 is arranged around the opening of the through cavity, so as to block the gap between the opening of the through cavity and the rear door 300, ensure the sealing between the opening of the through cavity and the rear door 300, thereby preventing external water vapor, wind or dust from entering the through cavity and directly impacting the ventilation channel, reducing the probability of abnormal release of the sealing of the ventilation channel during driving, and improving the waterproof, airproof and dustproof effects.

[0057] In some specific embodiments of the present invention, referring to Figure 1 The bottom side of the cover body 200 and the back door 300 are spaced apart. The bottom side of the cover body 200 and the back door 300 are surrounded by a through opening.

[0058] Specifically, the second windshield strip 210 surrounds the opening of the through cavity and is arranged on the top side and the horizontal sides of the cover body 200, so as to avoid blocking the bottom side of the cover body 200 and the back door 300, so that there is a gap between the bottom side of the cover body 200 and the back door 300, and then the bottom side of the cover body 200 and the back door 300 are enclosed to form a through opening, so that the through cavity can be connected with the outside through the through opening, ensuring that the ventilation channel can be ventilated normally. In addition, the through opening is arranged at the bottom of the cover body 200, which can reduce the probability of external water vapor, wind or dust entering the through cavity, thereby ensuring that the ventilation channel can be ventilated normally while reducing the direct impact of external water vapor, wind or dust on the ventilation channel.

[0059] In some specific embodiments of the present invention, referring to Figure 1 The cover body 200 is a spare tire cover. The through cavity is arranged on the side of the spare tire cover close to the rear door 300. The side of the spare tire cover far from the rear door 300 is provided with a receiving cavity for placing the spare tire. The opening of the through cavity is arranged on the side of the through cavity far from the receiving cavity.

[0060] Specifically, the cover body 200 is in the form of a spare tire cover. The interior of the spare tire cover is enclosed to form a receiving cavity for placing the spare tire. The side wall of the spare tire cover on the side close to the rear door 300 is set to shrink toward the receiving cavity of the spare tire cover, so that a concave structure is formed on the side of the spare tire cover close to the rear door 300. The concave structure is a through cavity, and it is no longer necessary to perform opening processing separately, thereby improving production efficiency. At the same time, referring to Figure 5 The specific form of the cover body 200 is set as a spare tire cover, and there is no need to set the cover body 200 separately, thereby improving the structural utilization rate and avoiding space waste.

[0061] The present invention also provides a vehicle body, comprising: a rear door ventilation structure as described in any of the above specific embodiments. Ventilation is performed through the ventilation channel on the rear door 300 of the vehicle body, wherein, under the action of the two blade layers 120 arranged in sequence, when any blade layer 120 is opened alone, the sealing of the ventilation channel will not be affected, and ventilation can be performed normally through the ventilation channel only when the two blade layers 120 are opened at the same time, thereby reducing the probability of abnormal release of the sealing of the ventilation channel during driving. At the same time, the two blade layers 120 arranged in sequence can also prevent the gap of any blade layer 120 from directly becoming an entry path for water vapor, wind or dust, and impose obstacles to the entry of water vapor, wind and dust, thereby improving the waterproof, airproof and dustproof effects. Furthermore, the ventilation passage is covered by the through cavity of the cover body 200 from the outside of the tailgate 300, so that the ventilation passage, the through cavity and the through port arranged at the bottom of the cover body 200 are connected in sequence, which avoids affecting the normal ventilation and reduces the direct impact of external water vapor, wind or dust on the ventilation passage, further reduces the probability of abnormal release of the seal of the ventilation passage during driving, and ensures the waterproof, airproof and dustproof effects.

[0062] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A back door ventilation structure, characterized in that: include: A ventilation assembly (100) is arranged on the back door (300), and a ventilation passage is arranged in the ventilation assembly (100); Two blade layers (120) are sequentially arranged in the ventilation channel; When the pressure inside the two blade layers (120) reaches a preset pressure value, the two blade layers (120) open, and the inside and outside of the back door (300) are connected through the ventilation channel; A cover body (200) having a through cavity therein, wherein the through cavity has an opening facing the ventilation passage and is disposed on the outer side of the back door (300); A through opening is provided at the bottom of the cover body (200), and the ventilation channel, the through cavity and the through opening are connected in sequence.

2. The tailgate ventilation structure according to claim 1, characterized in that: The ventilation assembly (100) comprises: An exoskeleton (110) is disposed on the back door (300), and the exoskeleton (110) encloses the ventilation passage; One of the blade layers (120) is arranged at an end of the ventilation passage close to the inner side of the rear door (300), and the other blade layer (120) is arranged at an end of the ventilation passage close to the outer side of the rear door (300).

3. The tailgate ventilation structure according to claim 2, characterized in that: The blade layer (120) comprises: An inner frame (121), wherein a plurality of the inner frames (121) are provided, wherein the plurality of the inner frames (121) are evenly arranged in the ventilation passage and both ends of each of the inner frames (121) are connected to the outer frame (110); The outer frame (110) and the plurality of inner frames (121) together form a plurality of ventilation slots; A blade (122) is movably arranged in each ventilation slot.

4. The tailgate ventilation structure according to claim 3, characterized in that: The top of the blade (122) is hingedly connected to a side of the top groove wall of the corresponding ventilation groove close to the inner side of the rear door (300), and the bottom of the blade (122) is movably mounted on a side of the bottom groove wall of the ventilation groove close to the outer side of the rear door (300).

5. The tailgate ventilation structure according to any one of claims 2 to 4, characterized in that: There are two ventilation channels, which are arranged adjacent to each other.

6. The tailgate ventilation structure according to claim 5, characterized in that: The back door (300) is provided with a ventilating opening, and the outer frame (110) is embedded in the ventilating opening; A first windshield strip (111) is sandwiched between the side of the outer frame (110) and the back door (300); The interference fit of the first windshield strip (111) ranges from 3.0 mm to 3.4 mm.

7. The tailgate ventilation structure according to claim 1, characterized in that: A second windshield strip (210) is sandwiched between the side of the cover body (200) and the back door (300); The interference fit of the second windshield strip (210) ranges from 3.4 mm to 3.8 mm.

8. The tailgate ventilation structure according to claim 1 or 7, characterized in that: The bottom side of the cover body (200) is spaced apart from the back door (300); The bottom side of the cover body (200) and the rear door (300) together form the passage.

9. The tailgate ventilation structure according to claim 8, characterized in that: The cover body (200) is a spare tire cover; The through cavity is arranged on a side of the spare tire cover close to the rear door (300); A receiving cavity for placing a spare tire is provided on a side of the spare tire cover away from the rear door (300); The opening of the through cavity is opened at a side of the through cavity away from the accommodating cavity.

10. A vehicle body, characterized in that: include: A tailgate ventilation structure as claimed in any one of claims 1 to 9.

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