The rear door of the vehicle and the vehicle

Abstract

The present invention discloses a rear door of a vehicle and a vehicle. The rear door of the vehicle comprises: a rear door body, the rear door body comprises an upper crossbeam, the upper crossbeam is provided with a guide groove, the guide groove comprises a first guide part, a second guide part and a third guide part, the width of the first guide part gradually decreases in the direction close to the second guide part, the width of the second guide part remains unchanged, and the width of the third guide part gradually decreases in the direction away from the second guide part. Thus, by setting the width of the first guide part of the guide groove to be reduced, the width of the second guide part remains unchanged, and the width of the third guide part continues to decrease, the airflow is accelerated twice, so that the turbulence formed downward after the airflow flows out of the guide groove can be kept away from the rear of the vehicle. In addition, the guide groove has a simple structure, and can reduce the noise generated by the rear door and transmitted to the vehicle without increasing the weight and production cost of the whole vehicle, thereby improving the riding comfort of the people in the vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a rear door of a vehicle and a vehicle. Background Art

[0002] With the progress of social life, people have higher and higher requirements for cars, and the development of cars has become more rapid and has entered a more diversified stage. When a car is driving, the top airflow flows smoothly along the roof cover of the car body. When it reaches the rear of the car, as the airflow gradually moves away from the car body, downward turbulence will be generated at the rear of the car, thereby generating turbulent noise. The noise is transmitted to the car through the tailgate, causing noise problems in the rear of the car. In order to block the turbulent noise, measures such as designing a shark fin at the rear end of the roof to weaken the airflow, improving the sound insulation and sound absorption capacity of the tailgate, or designing a strengthened support structure on the tailgate are often used.

[0003] In the prior art, methods of reducing turbulence at the rear end of the vehicle, such as designing a shark fin at the rear end of the roof to weaken the airflow, improving the sound insulation and sound absorption capacity of the tailgate, or designing a reinforced support structure on the tailgate, will increase the production cost and overall vehicle weight of the vehicle and affect the overall performance of the vehicle. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a vehicle back door, which has a simple structure and can reduce noise transmission.

[0005] The present invention further provides a vehicle.

[0006] According to an embodiment of the present invention, the tailgate of a vehicle includes: a tailgate body, the tailgate body includes an upper cross beam, the upper cross beam is provided with a guide groove, the guide groove includes a first guide portion, a second guide portion and a third guide portion, the first guide portion, the second guide portion and the third guide portion are connected in sequence in the length direction of the guide groove, the width of the first guide portion gradually decreases in the direction approaching the second guide portion, the width of the second guide portion remains unchanged and is the same as the width of the end of the first guide portion connected to the second guide portion, the width of the third guide portion at the end connected to the second guide portion is the same as the width of the second guide portion, and the width of the third guide portion gradually decreases in the direction away from the second guide portion.

[0007] Therefore, by setting the width of the first guide portion of the guide groove to be reduced, the width of the second guide portion to remain unchanged, and the width of the third guide portion to continue to decrease, the airflow can be accelerated for a second time. In this way, the turbulence formed downward after the airflow flows out of the guide groove can be kept away from the rear of the vehicle. In addition, the structure of the guide groove is simple, and the noise generated by the tailgate and transmitted to the interior of the vehicle can be reduced without increasing the weight and production cost of the entire vehicle, thereby improving the riding comfort of the people in the vehicle.

[0008] According to some embodiments of the present invention, the width of the first guide portion and the second guide portion is D1, and D1 satisfies the relationship: 1050 mm≤D1≤480 mm.

[0009] According to some embodiments of the present invention, the width of the third guide portion is D2, and D2 satisfies the relationship: 480 mm ≤ D2 ≤ 440 mm.

[0010] According to some embodiments of the present invention, both side walls of the guide groove in the width direction are provided with a first reinforcement protrusion, and the first reinforcement protrusion is arched and protrudes toward a side away from the guide groove.

[0011] According to some embodiments of the present invention, the first reinforcing protrusion is located in the middle of the guide groove in the length direction.

[0012] According to some embodiments of the present invention, the rear door body is provided with second reinforcing protrusions on the outer sides of both ends corresponding to the guide groove in the width direction, and the second reinforcing protrusions are arched and protrude in a direction close to the guide groove.

[0013] According to some embodiments of the present invention, the second reinforcing protrusion is located at an end of the guide groove in the length direction corresponding to the third guide portion.

[0014] According to some embodiments of the present invention, a third reinforcement protrusion is provided on a side of the second reinforcement protrusion away from the guide groove, and the third reinforcement protrusion is in a triangular cone shape and protrudes upward.

[0015] According to some embodiments of the present invention, three side edges of the third reinforcing protrusion are respectively S-shaped, arched, and straight.

[0016] A vehicle according to the present invention includes the above-mentioned vehicle tailgate.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is a perspective view of a rear door of a vehicle according to an embodiment of the present invention;

[0020] Figure 2 is a schematic diagram of a rear door of a vehicle according to an embodiment of the present invention;

[0021] Figure 3 2 is a schematic diagram of a rear door of a vehicle from another perspective according to an embodiment of the present invention.

[0022] Reference numerals:

[0023] 100. Back door;

[0024] 10. tailgate body; 11. upper crossbeam; 111. air guide groove; 1111. first air guide portion; 1112. second air guide portion; 1113. third air guide portion; 112. first reinforcing protrusion; 113. second reinforcing protrusion; 114. third reinforcing protrusion. DETAILED DESCRIPTION

[0025] Embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Embodiments of the present invention are described in detail below.

[0026] See the figure below for reference Figure 1-Figure 3 A tailgate 100 for a vehicle according to an embodiment of the present invention is described, and the tailgate 100 for a vehicle in the present invention is applied to a vehicle.

[0027] Combination Figure 1-Figure 3 As shown, the tailgate 100 of a vehicle according to an embodiment of the present invention may mainly include: a tailgate body 10, wherein the tailgate body 10 includes an upper cross beam 11, and the upper cross beam 11 is provided with a guide groove 111. The upper cross beam 11 can provide a stable and reliable structural position for the guide groove 111 on the tailgate body 10, and can ensure the structural stability of the guide groove 111 on the tailgate body 10. The guide groove 111 is provided on the upper cross beam 11, so that the airflow on the roof can flow to the upper cross beam 11 and then directly flow into the guide groove 111, so that the guide groove 111 can directly guide the airflow at the rear of the vehicle.

[0028] Furthermore, the guide groove 111 includes a first guide portion 1111, a second guide portion 1112 and a third guide portion 1113. The first guide portion 1111, the second guide portion 1112 and the third guide portion 1113 are connected in sequence in the length direction of the guide groove 111, which can ensure the structural connectivity of the guide groove 111, so that the wind flowing into the guide groove 111 can flow smoothly from the first guide portion 1111 to the second guide portion 1112, and then flow to the third guide portion 1113. The width of the first guide portion 1111 gradually decreases in the direction approaching the second guide portion 1112, so that the cross-sectional area of ​​the airflow in the first guide portion 1111 can gradually decrease. When the airflow rate remains unchanged, the airflow velocity in the first guide portion 1111 gradually increases.

[0029] Furthermore, the widths of the ends of the first air guide portion 1111 and the second air guide portion 1112 connected are the same, and the width of the end of the third air guide portion 1113 connected to the second air guide portion 1112 is the same as the width of the second air guide portion 1112, so that the width of the second air guide portion 1112 can be kept unchanged, so that the airflow can flow stably in the second air guide portion 1112, so that the second air guide portion 1112 can rectify the airflow in the guide groove 111, stabilize the airflow direction in the guide groove 111, and prevent the airflow from generating turbulence in the guide groove 111 due to acceleration, causing the rear door 100 to vibrate and generate noise, and the width of the third air guide portion 1113 gradually decreases in the direction away from the second air guide portion 1112. With such a configuration, the cross-sectional area of ​​the airflow in the third air guide portion 1113 can be reduced, and when the airflow flow rate remains unchanged, the airflow velocity in the third air guide portion 1113 can gradually increase, so that the wind can be accelerated twice in the guide groove 111.

[0030] Furthermore, after the airflow flows out of the guide groove 111, it breaks away from the fit with the tailgate 100. Under the influence of gravity, the airflow gradually flows downward in a parabolic direction and forms turbulence behind the tailgate 100. The turbulence formed downward by the accelerated airflow flowing out of the guide groove 111 is farther away from the tailgate 100 of the vehicle, thereby making the location where the turbulence is generated away from the tailgate 100 of the vehicle, reducing the vibration and noise caused by the unstable surface airflow direction of the tailgate 100 of the vehicle, thereby reducing the transmission of noise to the interior of the vehicle, thereby making the environment inside the vehicle quieter and improving the riding comfort of the people in the vehicle.

[0031] Furthermore, a guide groove 111 is provided on the upper cross beam 11 of the tailgate 100, which can not only effectively reduce the noise generated by turbulent excitation on the surface of the tailgate 100, but also the structure of the guide groove 111 is simple and does not require the addition of other structural materials, thereby reducing the production cost and production process difficulty of the tailgate 100 of the vehicle and improving the production convenience of the tailgate 100 of the vehicle.

[0032] Therefore, by setting the guide groove 111, the width of the first guide portion 1111 is reduced, the width of the second guide portion 1112 remains unchanged, and the width of the third guide portion 1113 continues to decrease, so as to accelerate the airflow for a second time. In this way, the turbulence formed downward after the airflow flows out of the guide groove 111 can be kept away from the rear of the vehicle. In addition, the guide groove 111 has a simple structure, and can reduce the noise generated by the tailgate 100 and transmitted to the interior of the vehicle without increasing the weight and production cost of the entire vehicle, thereby improving the riding comfort of the occupants.

[0033] According to some embodiments of the present invention, the width of the first air guide 1111 and the second air guide 1112 is D1, and D1 satisfies the relationship: 1050mm≤D1≤480mm. Specifically, the width of the first air guide 1111 is reduced from 1050mm to 480mm. In this way, on the one hand, the first air guide 1111 can effectively guide the airflow on the surface of the tailgate 100, and the structural strength of the first air guide 1111 and the second air guide 1112 can meet the design requirements of the vehicle body strength. On the other hand, the cross-sectional area of ​​the airflow in the first air guide 1111 can be reduced, so that the airflow velocity in the first air guide 1111 is accelerated, and the reliability of the airflow acceleration of the first air guide 1111 on the surface of the tailgate 100 of the vehicle is ensured.

[0034] According to some embodiments of the present invention, the width of the third air guide 1113 is D2, and D2 satisfies the relationship: 480mm≤D2≤440mm. Specifically, the width of the third air guide 1113 is reduced from 480mm to 440mm. In this way, on the one hand, when the wind flows from the second air guide 1112 to the third air guide 1113, the smoothness of the air flow can be ensured, and the air flow cross section of the third air guide 1113 can be prevented from being too small, which will increase the resistance of the air flow at the rear of the vehicle, which is beneficial to reducing the driving resistance of the vehicle. On the other hand, when the air flow flows through the third air guide 1113, the cross-sectional area of ​​the third air guide 1113 can be reduced, so that the air flow velocity in the third air guide 1113 is accelerated, and the reliability of the air flow acceleration of the third air guide 1113 on the surface of the rear door 100 of the vehicle can be ensured.

[0035] Combination Figure 1-Figure 3As shown, both side walls of the guide groove 111 in the width direction are provided with first reinforcing protrusions 112, which are arched and protrude toward the side away from the guide groove 111. Specifically, both side walls of the guide groove 111 in the width direction are provided with first reinforcing protrusions 112, which can play a role of reinforcing the side wall of the guide groove 111, and the first reinforcing protrusions 112 are arched. Compared with the plane structure, the arched structure can not only withstand a larger load, but also improve the structural strength of the guide groove 111 in the upper cross beam 11, and can also increase the smoothness of the surface of the first reinforcing protrusion 112, and can improve the smoothness of the flow of the airflow in the guide groove 111. The first reinforcing protrusion 112 is protruded toward the side away from the guide groove 111, which can ensure that the flow velocity of the airflow in the guide groove 111 is stable, so as to ensure the reliability of the guide groove 111 in guiding the airflow at the rear of the vehicle.

[0036] Combination Figure 2 As shown, the first reinforcing protrusion 112 is located in the middle of the length direction of the guide groove 111. Specifically, the structural strength of the middle position of the guide groove 111 in the length direction is relatively weak, and the first reinforcing protrusion 112 is provided in the middle of the length direction of the guide groove 111, which can improve the bearing capacity of the middle position of the length direction of the guide groove 111, and can improve the structural strength of the middle position of the length direction of the guide groove 111, thereby improving the structural reliability of the guide groove 111 and ensuring the working reliability of the guide groove 111.

[0037] Combination Figure 1-Figure 3 As shown, the rear door body 10 is provided with second reinforcing protrusions 113 at the outer sides of both ends of the width direction of the corresponding guide groove 111 . The second reinforcing protrusions 113 are arched and protrude toward the direction close to the guide groove 111 . Specifically, the tailgate body 10 is provided with second reinforcing protrusions 113 on the outer sides of the two ends of the width direction of the corresponding guide groove 111. The second reinforcing protrusions 113 can play a role of reinforcing the structure of the outer sides of the two ends of the width direction of the guide groove 111. The second reinforcing protrusions 113 are arched. Compared with the plane structure, the arched structure can not only withstand a larger load and improve the structural strength of the guide groove 111 in the upper cross beam 11, but also increase the smoothness of the surface of the second reinforcing protrusion 113, and improve the flow of wind on the outer sides of the two ends of the width direction of the guide groove 111, thereby reducing the resistance encountered by the vehicle during driving. The second reinforcing protrusions 113 are protruding in the direction close to the guide groove 111, and can support the guide groove 111 on the outer sides of the two ends of the width direction of the guide groove 111, so as to improve the structural reliability of the guide groove 111 in the upper cross beam 11.

[0038] Combination Figure 2As shown, the second reinforcing protrusion 113 is located at one end of the guide groove 111 corresponding to the third guide portion 1113 in the length direction. Specifically, the airflow is accelerated twice in the third guide portion 1113, and the third guide portion 1113 is closest to the position where the turbulence is formed in the back door 100 of the vehicle, and is easily affected by the turbulence excitation to generate vibration and noise. The second reinforcing protrusion 113 is arranged at one end of the guide groove 111 corresponding to the third guide portion 1113 in the length direction, which can enhance the structural strength of one end of the guide groove 111 corresponding to the third guide portion 1113 in the length direction, so that the structure of one end of the guide groove 111 corresponding to the third guide portion 1113 in the length direction is more stable, thereby reducing the noise generated by the back door 100 of the vehicle due to turbulence excitation, and further reducing the noise transmitted from the back door 100 to the vehicle, so as to improve the riding comfort of the people in the vehicle.

[0039] Combination Figure 1-Figure 3 As shown, a third reinforcing protrusion 114 is arranged on the side of the second reinforcing protrusion 113 away from the guide groove 111, and the third reinforcing protrusion 114 is in a triangular cone shape and is arranged to protrude upward. Specifically, a third reinforcing protrusion 114 is arranged on the side of the second reinforcing protrusion 113 away from the guide groove 111, and the third reinforcing protrusion 114 can play a role in reinforcing the structure of the side position of the upper cross beam 11 away from the guide groove 111, and can reduce the vibration response sensitivity of the side position of the upper cross beam 11 away from the guide groove 111 to the vehicle powertrain and road excitation energy, thereby reducing the vibration and noise generated by the back door 100 of the vehicle. The third reinforcing protrusion 114 is in a triangular shape and is arranged to protrude upward. Such an arrangement can not only improve the structural strength of the third reinforcing protrusion 114, but also improve the bearing capacity of the third reinforcing protrusion 114, and can effectively improve the structural stability of the back door 100 of the vehicle.

[0040] Combination Figure 1-Figure 3 As shown, the three sides of the third reinforcing protrusion 114 are respectively in an S-shape, an arch shape and a straight line. Specifically, when the airflow flows through the third reinforcing protrusion 114, the change in the airflow direction is likely to excite the third reinforcing protrusion 114 to vibrate, and then it is likely to cause noise on the back door 100. Setting the third reinforcing protrusion 114 to be a triangular cone shape can improve the structural strength of the third reinforcing protrusion 114, reduce the sensitivity of the third reinforcing protrusion 114 to excitation, and reduce the vibration and noise of the back door 100 of the vehicle. The three sides of the triangular cone are respectively set to be an S-shape, an arch shape and a straight line, so that the third reinforcing protrusion 114 has a local strength difference design. Such a setting can not only further improve the structural strength of the third reinforcing protrusion 114, but also prevent the three sides of the triangular cone from resonating due to turbulent excitation, and further reduce the noise generation of the back door 100 of the vehicle.

[0041] According to an embodiment of the present invention, a vehicle includes the above-mentioned tailgate 100 of the vehicle, and a guide groove 111 with a guide function is arranged on the upper cross beam 11 of the tailgate 100. The guide groove 111 can accelerate the airflow at the rear of the vehicle, so that the position where the airflow forms turbulence after leaving the rear of the vehicle is farther away from the tailgate 100 of the vehicle, thereby reducing the vibration and noise generated by the tailgate 100 of the vehicle due to turbulence excitation, reducing the noise transmitted to the interior of the vehicle through the tailgate 100, and improving the riding comfort of the people in the vehicle.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0043] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0044] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A back door of a vehicle, characterized in that: include: A back door body (10), the back door body (10) comprising an upper cross beam (11), the upper cross beam (11) being provided with a guide groove (111), the guide groove (111) comprising a first guide portion (1111), a second guide portion (1112) and a third guide portion (1113), the first guide portion (1111), the second guide portion (1112) and the third guide portion (1113) being connected in sequence in a length direction of the guide groove (111), the first guide portion (1111) The width of the third flow guide portion (1113) gradually decreases in a direction approaching the second flow guide portion (1112), the width of the second flow guide portion (1112) remains unchanged and is the same as the width of an end of the first flow guide portion (1111) connected to the second flow guide portion (1112), the width of an end of the third flow guide portion (1113) connected to the second flow guide portion (1112) is the same as the width of the second flow guide portion (1112), and the width of the third flow guide portion (1113) gradually decreases in a direction away from the second flow guide portion (1112).

2. The vehicle tailgate according to claim 1, characterized in that: The width of the first guide portion (1111) is D1, and D1 satisfies the relationship: 1050mm≤D1≤480mm.

3. The vehicle tailgate according to claim 2, characterized in that: The width of the third guide portion (1113) is D2, and D2 satisfies the relationship: 480mm≤D2≤440mm.

4. The vehicle tailgate according to claim 1, characterized in that: Both side walls of the guide groove (111) in the width direction are provided with first reinforcement protrusions (112), and the first reinforcement protrusions (112) are arched and protrude toward a side away from the guide groove (111).

5. The vehicle tailgate according to claim 4, characterized in that: The first reinforcing protrusion (112) is located in the middle of the guide groove (111) in the length direction.

6. The vehicle tailgate according to claim 1, characterized in that: The rear door body (10) is provided with second reinforcement protrusions (113) on the outer sides of both ends in the width direction of the air guide groove (111); the second reinforcement protrusions (113) are arched and protrude in a direction close to the air guide groove (111).

7. The vehicle tailgate according to claim 6, characterized in that: The second reinforcing protrusion (113) is located at one end of the guide groove (111) in the length direction corresponding to the third guide portion (1113).

8. The vehicle tailgate according to claim 6, characterized in that: A third reinforcement protrusion (114) is arranged on a side of the second reinforcement protrusion (113) away from the guide groove (111); the third reinforcement protrusion (114) is in a triangular cone shape and is arranged to protrude upwards.

9. The vehicle tailgate according to claim 8, characterized in that: The three sides of the third reinforcing protrusion (114) are respectively S-shaped, arched and straight.

10. A vehicle, characterized in that: include: A tailgate (100) for a vehicle according to any one of claims 1 to 9.

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