Automobile back door and automobile

Abstract

The application discloses a kind of automobile back door and automobile, automobile back door includes: inner plate, multiple polygonal reinforcing parts are equipped on inner plate, multiple polygonal reinforcing parts are sequentially arranged in left and right direction;Wherein, part of two polygonal reinforcing parts adjacent and the edge of front and back direction on inner plate jointly define triangle space;Outer plate, outer plate is equipped on inner plate, and it is jointly defined with inner plate cavity;Several support members located in cavity, for supporting outer plate;Wherein, support member one end is equipped in the periphery of inner plate, other end is equipped in the part of inner plate away from periphery.The application increases the strength of inner plate by being convex multiple sequentially arranged polygonal reinforcing parts on inner plate, further enhances the strength of inner plate by the stable nature of triangle space, and sets support member for supporting outer plate, improves the vibration attenuation performance of automobile back door, weakens vibration roar.

Description

Technical Field

[0001] This invention relates to the field of automotive rear door technology, and more specifically, to an automotive rear door and an automotive. Background Technology

[0002] Consumers have increasingly higher expectations for quiet and comfortable driving in vehicles, and cars with better noise control are more likely to win their favor. The main sources of noise and vibration in a car come from the powertrain and the road surface, with the body system being the ultimate recipient of vibration. As a large opening and closing component in the body system, the tailgate, together with other opening and closing components, forms a closed acoustic cavity system in the car, causing vibration and booming problems. Summary of the Invention

[0003] In view of this, the present invention aims to provide a car tailgate.

[0004] To achieve the above objectives, the technical solution of the present invention is implemented as follows: A car tailgate includes: an inner panel having multiple polygonal reinforcing parts arranged sequentially in a left-right direction; wherein two adjacent polygonal reinforcing parts, together with the front-rear edge of the inner panel, define a triangular space; an outer panel disposed on the inner panel and together with the inner panel define a cavity; and a plurality of supporting members located within the cavity for supporting the outer panel; wherein one end of each supporting member is disposed at the periphery of the inner panel, and the other end is disposed at a portion of the inner panel away from the periphery.

[0005] According to an embodiment of the present invention, the rear door of a car increases the strength of the inner panel by providing a plurality of polygonal reinforcing parts arranged in sequence on the inner panel, further enhances the strength of the inner panel by utilizing the relatively stable property of the triangular space, and provides a support member to support the outer panel, thereby improving the vibration damping performance of the rear door of the car and reducing vibration noise.

[0006] In addition, the tailgate of the automobile according to the above embodiments of the present invention may also have the following additional technical features: According to some embodiments of the present invention, the inner plate includes: a first inner plate and a second inner plate, the second inner plate being disposed on one side of the first inner plate, and a plurality of polygonal reinforcing portions being arranged sequentially in the left-right direction of the second inner plate; wherein, a support member is disposed on the first inner plate, and two adjacent polygonal reinforcing portions together with the front-back edge of the second inner plate define a triangular space; the outer plate includes: a first outer plate, the first outer plate being disposed on the first inner plate, the support member being used to support the first outer plate; and a second outer plate, the second outer plate being disposed on the second inner plate.

[0007] According to some embodiments of the present invention, the side of the first outer plate away from the first inner plate is configured as a first smooth surface, and the side of the second outer plate away from the second inner plate is configured as a second smooth surface, wherein the first smooth surface is connected to the second smooth surface.

[0008] According to some embodiments of the present invention, the triangular space is provided with a first reinforcing portion, and a portion of the polygonal reinforcing portion is provided with a second reinforcing portion.

[0009] According to some embodiments of the present invention, the plurality of polygonal reinforcing portions include: a first polygonal reinforcing portion disposed in the middle of the second inner plate; two second polygonal reinforcing portions, each of the first polygonal reinforcing portion being disposed on its left and right sides; and at least two third polygonal reinforcing portions disposed on the side of the second polygonal reinforcing portions away from the first polygonal reinforcing portions; wherein the areas of the first polygonal reinforcing portion, the second polygonal reinforcing portion, and the third polygonal reinforcing portion are different from each other.

[0010] According to some embodiments of the present invention, there are two edges, namely a first edge and a second edge, the first edge and the second edge are arranged in the front-back direction, the first edge and the second edge are constructed in an arch shape, and the aspect ratio of the first edge is different from that of the second edge.

[0011] According to some embodiments of the present invention, the second inner plate is provided with two reinforcing brackets, each of the reinforcing brackets having one end connected to the second polygonal reinforcing part and the other end connected to the left end or the right end of the second inner plate; wherein the two reinforcing brackets have different thicknesses.

[0012] According to some embodiments of the present invention, the support member includes: a first arc-shaped portion disposed on the first inner plate, the center of the first arc-shaped portion being located on the side of the first arc-shaped portion away from the first outer plate; and a second arc-shaped portion disposed on the first inner plate, the second arc-shaped portion connecting to the first arc-shaped portion, the center of the second arc-shaped portion being located on the side of the second arc-shaped portion closer to the first outer plate.

[0013] According to some embodiments of the present invention, the first inner plate is provided with a connecting portion, the connecting portion connecting to one end of the first arc-shaped portion away from the second arc-shaped portion, and in the left-right direction, the perimeter is a left perimeter or a right perimeter, the left perimeter or the right perimeter is spaced from the connecting portion by a predetermined distance, the predetermined distance being 1 / 3 of the left-right length of the first inner plate.

[0014] According to some embodiments of the present invention, the rear door of the car further includes: a peripheral beam, the peripheral beam having a hollow area, the first inner panel being disposed within the hollow area, and the periphery of the first inner panel being connected to the peripheral beam.

[0015] According to some embodiments of the present invention, the support member further includes: an extension portion extending toward the peripheral beam and connected to the peripheral beam; wherein the peripheral beam includes an upper crossbeam and a door edge beam, the door edge beam is connected to the upper crossbeam, a portion of the extension portion is connected to the upper crossbeam, and a portion of the extension portion is connected to the door edge beam.

[0016] Another object of the present invention is to provide an automobile.

[0017] To achieve the above objectives, the technical solution of the present invention is implemented as follows: An automobile includes the aforementioned tailgate. The advantages of the automobile and the tailgate compared to the prior art are the same and will not be repeated here. Attached Figure Description

[0018] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is an exploded schematic diagram of the rear door of a car in an embodiment of the present invention.

[0019] Figure 2 yes Figure 1 A schematic diagram of the structure of the second inner plate.

[0020] Figure 3 yes Figure 1 Three-dimensional view of the second inner panel.

[0021] Figure 4 yes Figure 3 Exploded view of the second inner plate.

[0022] Figure 5 yes Figure 1 An exploded view of part of the structure of the rear door of a Chinese car.

[0023] Figure 6 yes Figure 1 A schematic diagram of the structure of the middle support component.

[0024] Figure 7 yes Figure 1 A schematic diagram showing the fit between the inner plate and the support components.

[0025] Figure label: 1000. Car tailgate; 100. Inner panel; 102. First inner plate; 101. Connecting part; 103. Second inner plate; 10. Polygonal reinforcement; 11. First polygonal reinforcement; 12. Second polygonal reinforcement; 13. Third polygonal reinforcement; 14. Second reinforcement; 15. Reinforcing plate; 20. Triangular space; 21. First reinforcing part; 30. Edge; 31. First edge; 32. Second edge; 40. End; 50. Reinforcing bracket; 200. Outer panel; 201. First outer panel; 2011. First smooth surface; 202. Second outer panel; 2021. Second smooth surface; 300, Support member; 301, First arc-shaped portion; 3011, First weight-reducing hole; 302, Second arc-shaped portion; 303, Extension portion; 3031, Second weight-reducing hole; 400. Perimeter beam; 401. Top crossbeam; 402. Door edge beam. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0027] The following will refer to Figures 1-7 The present invention will be described in detail with reference to the embodiments.

[0028] like Figure 1 As shown, the tailgate 1000 of an automobile according to an embodiment of the present invention includes: an inner panel 100, an outer panel 200, and a support member 300.

[0029] like Figure 2 As shown, the inner plate 100 is provided with multiple polygonal reinforcing parts 10, which are arranged sequentially in the left-right direction. By arranging multiple polygonal reinforcing parts 10 sequentially in the length direction of the inner plate 100, i.e., the left-right direction, the strength of the inner plate 100 is enhanced, the vibration damping performance of the inner plate 100 is improved, and vibration and noise are avoided.

[0030] like Figure 2 As shown, two adjacent polygonal reinforcing parts 10 and the front-to-back edges of the inner plate 100 together define a triangular space 20. The high stability and strength of the triangular space 20 further enhance the sheet metal strength of the inner plate 100, thereby further improving the vibration damping performance of the inner plate 100 and further preventing vibration and noise.

[0031] The outer panel 200 is disposed on the inner panel 100, and together with the inner panel 100, they define a cavity. By setting the outer panel 200 and the inner panel 100, and having the outer panel 200 and the inner panel 100 together define a cavity, the overall strength of the car tailgate 1000 is improved while the weight is reduced.

[0032] like Figure 1 As shown, there are several support members 300, which are located inside the cavity and are used to support the outer panel 200. By setting the support members 300 to support the outer panel 200, the strength of the car tailgate 1000 is enhanced. At the same time, the multiple support members 300 can specifically improve the strength and better adapt to the needs of different car tailgates 1000.

[0033] One end of the support member 300 is located at the periphery of the inner plate 100, and the other end is located on the inner plate 100 at a position away from the periphery. By setting the support member 300 to connect at different positions on the inner plate 100, the support member 300 can transmit the force transmitted from the outer plate 200 to different positions on the inner plate 100, thereby improving the vibration damping performance of the inner plate 100.

[0034] It should be noted that the front-back and left-right directions in this invention can be understood as the front-back and left-right directions of a car, with the front of the car in front and the rear of the car in the rear. When observing the car from front to back, the observer's left hand is the left in this invention and the observer's right hand is the right in this invention. For ease of description, the above left-right directions will be used as examples in the following.

[0035] According to an embodiment of the present invention, the rear door 1000 of a car increases the strength of the inner panel 100 by providing a plurality of polygonal reinforcing parts 10 arranged in sequence on the inner panel 100, further enhances the strength of the inner panel 100 by the relatively stable property of the triangular space 20, and provides a support member 300 to support the outer panel 200, thereby improving the vibration damping performance of the rear door 1000 and reducing vibration noise.

[0036] like Figure 1 , Figure 2 As shown, according to some embodiments of the present invention, the inner plate 100 includes a first inner plate 102 and a second inner plate 103. The second inner plate 103 is disposed on one side of the first inner plate 102, and a plurality of polygonal reinforcing portions 10 are arranged sequentially in the left-right direction of the second inner plate 103. By arranging a plurality of polygonal reinforcing portions 10 sequentially in the longitudinal direction of the second inner plate 103, i.e., the left-right direction, the strength of the second inner plate 103 is enhanced, the vibration damping performance of the second inner plate 103 is improved, and vibration noise is avoided.

[0037] The support member 300 is disposed on the first inner plate 102, and two adjacent polygonal reinforcing parts 10 together with the front-rear edge 30 of the second inner plate 103 define a triangular space 20. The high stability and strength of the triangular space 20 further enhance the sheet metal strength of the second inner plate 103, thereby further improving the vibration damping performance of the second inner plate 103 and further preventing vibration and noise.

[0038] The outer panel 200 includes a first outer panel 201 and a second outer panel 202. The first outer panel 201 covers the first inner panel 102, and a support member 300 supports the first outer panel 201. By providing the support member 300 to support the first outer panel 201, the strength of the car tailgate 1000 is enhanced. The second outer panel 202 covers the second inner panel 103. Through the above-mentioned split design, the size of the corresponding molds is reduced, the assembly difficulty is reduced, and the cost is lowered.

[0039] like Figure 1 As shown, according to some embodiments of the present invention, the side of the first outer panel 201 away from the first inner panel 102 is configured as a first smooth surface 2011, and the side of the second outer panel 202 away from the second inner panel 103 is configured as a second smooth surface 2021, with the first smooth surface 2011 connecting to the second smooth surface 2021. By providing the connecting first smooth surface 2011 and second smooth surface 2021, wind resistance is reduced, making the car tailgate 1000 more aerodynamic.

[0040] like Figures 2 to 4 As shown, according to some embodiments of the present invention, a first reinforcing portion 21 is provided protruding within the triangular space 20. The first reinforcing portion 21 further enhances the strength of the inner plate 100 and reduces noise.

[0041] Specifically, the first reinforcing part 21 protrudes upward by 1mm, which increases the strength of the inner panel 100 while reducing the weight of the inner panel 100.

[0042] like Figures 2 to 4 As shown, according to some embodiments of the present invention, a second reinforcing part 14 is provided on a portion of the polygonal reinforcing part 10. By providing the second reinforcing part 14, the surface strength of the inner plate 100 region where the polygonal reinforcing part 10 is located is improved, thereby enhancing the overall strength.

[0043] Specifically, the height of the second reinforcing part 14 is 1mm, which increases the strength of the inner panel 100 while reducing its weight.

[0044] like Figures 2 to 4 As shown, according to some embodiments of the present invention, the plurality of polygonal reinforcements 10 include: a first polygonal reinforcement 11, two second polygonal reinforcements 12 and at least two third polygonal reinforcements 13.

[0045] The first polygonal reinforcing part 11 is located in the middle of the second inner plate 103.

[0046] A second polygonal reinforcement 12 is provided on each of the left and right sides of the first polygonal reinforcement 11.

[0047] The third polygonal reinforcement 13 is located on the side of the second polygonal reinforcement 12 away from the first polygonal reinforcement 11.

[0048] The areas of the first polygonal reinforcing part 11, the second polygonal reinforcing part 12, and the third polygonal reinforcing part 13 are different from each other. By setting the first polygonal reinforcing part 11, the second polygonal reinforcing part 12, and the third polygonal reinforcing part 13 with different areas, the same frequency vibration at different positions on the second inner plate 103 is avoided, thereby rapidly attenuating the vibration and reducing noise. Here, "same frequency" can refer to the same vibration frequency or the same modal frequency.

[0049] For example, the first polygonal reinforcement 11 is located in the middle of the second inner plate 103; there are two second polygonal reinforcements 12, one of which is located to the left of the first polygonal reinforcement 11, and the other is located to the right of the first polygonal reinforcement 11; there are two third polygonal reinforcements 13, one of which is located to the left of the second polygonal reinforcement 12 on the left, and the other is located to the right of the second polygonal reinforcement 12 on the right, which facilitates frequency avoidance and mold design.

[0050] like Figure 2 As shown, according to some embodiments of the present invention, the polygonal reinforcing portion 10 is constructed as a hexagon. By constructing the polygonal reinforcing portion 10 as a hexagon, the high stability and strength of the hexagon are utilized to enhance the sheet metal strength of the second inner plate 103. For example, the hexagon is a honeycomb hexagon, thereby further enhancing the strength.

[0051] like Figure 2 As shown, according to some embodiments of the present invention, the front-to-back edge 30 of the inner plate 100 is constructed as an arch. By constructing the edge 30 as an arch, the overall strength of the inner plate 100 is enhanced by utilizing the high strength of the arch, thereby reducing vibration.

[0052] like Figure 2As shown, according to some embodiments of the present invention, there are two edges 30, namely a first edge 31 and a second edge 32. The first edge 31 and the second edge 32 are arranged in the front-to-back direction, and the aspect ratio of the first edge 31 is different from that of the second edge 32. By setting the first edge 31 and the second edge 32 with different aspect ratios, the overall strength of the inner plate 100 is improved while enhancing its aesthetics, and the same frequency is avoided. It should be noted that the different aspect ratios of the first edge 31 and the second edge 32 result in different strengths of the first edge 31 and the second edge 32. During vibration, the first edge 31 and the second edge 32 with different strengths have different frequencies, ultimately achieving the effect of avoiding the same frequency.

[0053] Specifically, the aspect ratio of the first edge 31 is 0.03, and the aspect ratio of the second edge 32 is 0.11.

[0054] It should be noted that in the height-to-width ratio, the width is the distance between the two arch feet along the edge of the arch (30), and the height is the maximum distance between the arch foot and the crown along the edge of the arch (30). For example, as... Figure 2 As shown, the height of the first edge 31 is H1, the width of the first edge 31 is W1, the height of the second edge 32 is H2, and the width of the second edge 32 is W2.

[0055] like Figure 4 As shown, according to some embodiments of the present invention, a reinforcing bracket 50 is provided on the second inner plate 103. One end of the reinforcing bracket 50 is connected to the second polygonal reinforcing part 12, and the other end is connected to the left end 40 or the right end 40 of the second inner plate 103. The strength of the second inner plate 103 is further improved by providing the reinforcing bracket 50.

[0056] For example, the first polygonal reinforcing part 11 is located in the middle of the second inner plate 103, and the two second polygonal reinforcing parts 12 are respectively located on the left and right opposite sides of the first polygonal reinforcing part 11. There are two reinforcing brackets 50. One end of the reinforcing bracket 50 is connected to the second polygonal reinforcing part 12 located on the left side of the first polygonal reinforcing part 11, and the other end is connected to the left end 40 of the inner plate 100. The other reinforcing bracket 50 is connected to the second polygonal reinforcing part 12 located on the right side of the first polygonal reinforcing part 11, and the other end is connected to the right end 40 of the inner plate 100. The reinforcing brackets 50 are used to improve the strength of the left and right sides of the second inner plate 103.

[0057] like Figure 3 , Figure 4As shown, according to some embodiments of the present invention, there are two reinforcing brackets 50, which are spaced apart in the left-right direction. One end of the left reinforcing bracket 50 is connected to the second polygonal reinforcing part 12, and the other end is connected to the left end 40; one end of the right reinforcing bracket 50 is connected to the second polygonal reinforcing part 12, and the other end is connected to the right end 40; wherein the two reinforcing brackets 50 have different thicknesses. By setting two reinforcing brackets 50 with different thicknesses, the two reinforcing brackets 50 are prevented from vibrating at the same frequency, thereby avoiding resonance and reducing noise.

[0058] Specifically, one of the two reinforcing brackets 50 has a thickness of 0.4mm, and the other has a thickness of 0.6mm, to reduce noise.

[0059] like Figure 4 As shown, according to some embodiments of the present invention, a reinforcing plate 15 is provided on one of the third polygonal reinforcing portions 13. By providing the reinforcing plate 15, the strength of the third polygonal reinforcing portion 13 is increased, while avoiding vibration at the same frequency.

[0060] For example, the first polygonal reinforcing part 11 is located in the middle of the second inner plate 103; there are two second polygonal reinforcing parts 12, one of which is located to the left of the first polygonal reinforcing part 11 and the other is located to the right of the first polygonal reinforcing part 11; there are two third polygonal reinforcing parts 13, one of which is located to the left of the second polygonal reinforcing part 12 on the left and the other is located to the right of the second polygonal reinforcing part 12 on the right. The third polygonal reinforcing part 13 on the right is provided with a reinforcing plate 15, while the third polygonal reinforcing part 13 on the left is not provided with a reinforcing plate 15. The second inner plate 103 is different on the left and right sides as a whole to avoid vibration at the same frequency.

[0061] Specifically, the thickness of the reinforcing plate 15 is 0.2 mm, which enhances the strength of the third polygonal reinforcing part 13 while reducing its weight.

[0062] like Figure 5 , Figure 6 As shown, according to some embodiments of the present invention, the support member 300 includes: a first arcuate portion 301 and a second arcuate portion 302.

[0063] The first arc-shaped portion 301 is provided on the first inner plate 102, and the center of the first arc-shaped portion 301 is located on the side of the first arc-shaped portion 301 away from the first outer plate 201.

[0064] The second arc-shaped portion 302 is disposed on the first inner plate 102, and is connected to the first arc-shaped portion 301. The center of the second arc-shaped portion 302 is located on the side of the second arc-shaped portion 302 closest to the first outer plate 201. By setting the first arc-shaped portion 301 and the second arc-shaped portion 302, the support member 300 is made to have an overall "S" shape. Utilizing the high strength characteristic of the double arch structure of the "S" shape, the strength of the support member 300 is improved. It should be noted that the overall "S" shape of the support member 300 does not mean that the support member 300 is a perfectly standard "S" shape; the support member 300 can be a structure similar to an "S".

[0065] like Figure 5 , Figure 6 As shown, according to some embodiments of the present invention, a first weight-reducing hole 3011 is provided on the first arc-shaped portion 301. By providing the first weight-reducing hole 3011 on the first arc-shaped portion 301, the overall weight of the support member 300 is reduced.

[0066] like Figure 5 As shown, according to some embodiments of the present invention, a connecting portion 101 is provided on the first inner plate 102. The connecting portion 101 connects to one end of the first arcuate portion 301 away from the second arcuate portion 302. In the left-right direction, the perimeter is either the left or right perimeter, and the left or right perimeter is spaced from the connecting portion 101 by a predetermined distance, which is 1 / 3 of the left-right length of the first inner plate 102. By providing the connecting portion 101, and placing the connecting portion 101 at 1 / 3 of the left-right length of the first inner plate 102, the overall performance of the car tailgate 1000 is optimized. During the vibration of the first outer plate 201, the first outer plate 201 applies force to the support member 300, and one end of the support member 300 is connected to 1 / 3 of the length of the first inner plate 102, thereby transmitting the force to the 1 / 3 position of the length of the first inner plate 102, so that the first inner plate 102 can withstand more complex forces.

[0067] like Figure 5 As shown, specifically, there are two connecting portions 101, which are spaced apart along the length of the tailgate 1000. For example, if the length of the tailgate 1000 is in the left-right direction, the two connecting portions 101 are spaced apart in the left-right direction. The left connecting portion 101 is closer to the left side of the tailgate 1000, and the distance between the left connecting portion 101 and the left periphery is 1 / 3 of the length of the inner panel 100. The right connecting portion 101 is closer to the right side of the tailgate 1000, and the distance between the right connecting portion 101 and the right periphery is 1 / 3 of the length of the first inner panel 102.

[0068] like Figure 5As shown, according to some embodiments of the present invention, the car tailgate 1000 further includes: a peripheral beam 400, the peripheral beam 400 having a hollow area, a first inner panel 102 disposed within the hollow area, and the peripheral edge of the first inner panel 102 connected to the peripheral beam 400. By providing the peripheral beam 400, the overall strength of the car tailgate 1000 is improved by utilizing the strength of the peripheral beam 400.

[0069] The peripheral beam 400 and the first inner plate 102 can be integrally formed or they can be separate parts.

[0070] like Figures 5 to 7 As shown, according to some embodiments of the present invention, the support member 300 further includes an extension 303 extending toward the peripheral beam 400 and connecting to the peripheral beam 400. By extending the extension 303 onto the support member 300 to connect to the peripheral beam 400, the number of connection points between the support member 300 and other components is increased, thereby enhancing stability.

[0071] like Figure 5 As shown, according to some embodiments of the present invention, the perimeter beam 400 includes an upper crossbeam 401 and a door edge beam 402. The door edge beam 402 is connected to the upper crossbeam 401, and a partial extension 303 is connected to both the upper crossbeam 401 and the door edge beam 402. By connecting the upper crossbeam 401 and the door edge beam 402 with the partial extension 303, the number of connection points between the support member 300 and other components is further increased, and these connection points are located in different orientations. This allows the support member 300 to transmit more complex forces, further improving its stability.

[0072] like Figure 5 As shown in Figures 6 and 7, according to some embodiments of the present invention, the extension 303 is provided with a second weight-reducing hole 3031. The weight of the support member 300 is further reduced by providing the second weight-reducing hole 3031.

[0073] like Figure 6 As shown, according to some embodiments of the present invention, the second weight-reducing hole 3031 is constructed in an arch shape. By constructing the second weight-reducing hole 3031 in an arch shape, the weight of the support member 300 is reduced while the connection strength is improved by utilizing the high strength of the arch shape.

[0074] According to some embodiments of the present invention, the number of support members 300 is at least two, and the thickness of adjacent support members 300 is different. By making the thickness of the support members 300 different, the possibility of the two support members 300 resonating at the same frequency is reduced, thereby reducing noise. Here, "same frequency" can refer to the same vibration frequency or the same modal frequency.

[0075] Specifically, one of the two support members 300 has a thickness of 0.4 mm, and the other support member 300 has a thickness of 0.6 mm. Of course, the thickness of the support member 300 can also be other values, which will not be elaborated here.

[0076] The following is in conjunction with the appendix Figures 1 to 7 This invention provides a detailed description of an embodiment of a car tailgate 1000.

[0077] The car tailgate 1000 includes: a perimeter beam 400, an inner panel 100, an outer panel 200, and supporting components 300.

[0078] The perimeter beam 400 includes an upper crossbeam 401 and a door edge beam 402. The door edge beam 402 is connected to the upper crossbeam 401, and the upper crossbeam 401 and the door edge beam 402 together define the hollow area.

[0079] The inner panel 100 includes a first inner panel 102 and a second inner panel 103, with the second inner panel 103 disposed on one side of the first inner panel 102.

[0080] The first inner plate 102 is located in the hollow area. The periphery of the first inner plate 102 is connected to the peripheral beam 400. The first inner plate 102 is provided with two connecting parts 101, which are distributed on the left and right sides. The distance between the left connecting part 101 and the left side of the first inner plate 102 is 1 / 3 of the length of the first inner plate 102. The distance between the right connecting part 101 and the right side of the first inner plate 102 is 1 / 3 of the length of the first inner plate 102.

[0081] The first inner plate 102 is provided with five polygonal reinforcing parts 10, which include: one first polygonal reinforcing part 11, two second polygonal reinforcing parts 12 and two third polygonal reinforcing parts 13.

[0082] The first polygonal reinforcing part 11 is constructed as a honeycomb hexagon. The first polygonal reinforcing part 11 is located in the middle of the first inner plate 102. The first polygonal reinforcing part 11 is provided with a second reinforcing part 14, and the height of the second reinforcing part 14 is 1mm.

[0083] Two second polygonal reinforcing portions 12 are located on opposite sides of the first polygonal reinforcing portion 11. Both second polygonal reinforcing portions 12 are constructed as honeycomb hexagons. Each of the two second polygonal reinforcing portions 12 is provided with a second reinforcing portion 14, the height of which is 1mm. The second polygonal reinforcing portion 12 on the left, the first polygonal reinforcing portion 11, and the edge 30 of the first inner plate 102 together define a triangular space 20. A first reinforcing portion 21 protrudes within the triangular space 20, the height of which is 1mm.

[0084] There are two third polygonal reinforcing parts 13, both of which are constructed as honeycomb hexagons. One third polygonal reinforcing part 13 is located to the left of the second polygonal reinforcing part 12 to the left of the first polygonal reinforcing part 11, and the other third polygonal reinforcing part 13 is located to the right of the second polygonal reinforcing part 12 to the right of the first polygonal reinforcing part 11. The third polygonal reinforcing part 13 on the right is provided with a reinforcing plate 15, which has a thickness of 0.2 mm.

[0085] Among them, the areas of the first polygonal reinforcing part 11, the second polygonal reinforcing part 12 and the third polygonal reinforcing part 13 are different from each other.

[0086] In the width direction of the first inner plate 102, the first inner plate 102 has a first edge 31 and a second edge 32. The first edge 31 is located in front of the second edge 32. The first edge 31 and the second edge 32 are constructed in an arch shape. The height-to-width ratio of the first edge 31 is 0.03 and the height-to-width ratio of the second edge 32 is 0.11.

[0087] Two reinforcing brackets 50 are provided on the first inner plate 102, and the two reinforcing brackets 50 are distributed in the left-right direction. One end of the left reinforcing bracket 50 is connected to the second polygonal reinforcing part 12 on the left side, and the other end is connected to the left end 40 of the first inner plate 102; one end of the right reinforcing bracket 50 is connected to the second polygonal reinforcing part 12 on the right side, and the other end is connected to the right end 40 of the first inner plate 102. The thickness of the left reinforcing bracket 50 is 0.6 mm, and the thickness of the right reinforcing bracket 50 is 0.4 mm.

[0088] The outer panel 200 includes a first outer panel 201 and a second outer panel 202. The first outer panel 201 covers the first inner panel 102 and together defines a cavity. The second outer panel 202 covers the second inner panel 103 and together defines a cavity. The side of the first outer panel 201 away from the first inner panel 102 is constructed as a first smooth surface 2011, and the side of the second outer panel 202 away from the second inner panel 103 is constructed as a second smooth surface 2021. The first smooth surface 2011 connects to the second smooth surface 2021.

[0089] There are two support members 300. The two support members 300 are located between the first inner plate 102 and the first outer plate 201 to support the first outer plate 201. The two support members 300 are distributed left and right in the cavity. The thickness of the support member 300 on the left is 0.6 mm and the thickness of the support member 300 on the right is 0.4 mm. Each support part includes: a first arc-shaped part 301, a second arc-shaped part 302 and an extension part 303.

[0090] The first arc-shaped portion 301 is provided on the first inner plate 102, and the center of the first arc-shaped portion 301 is located on the side of the first arc-shaped portion 301 away from the first outer plate 201. The first arc-shaped portion 301 is provided with a first weight-reducing hole 3011, and the end of the first arc-shaped portion 301 away from the second arc-shaped portion 302 is connected to the connecting portion 101.

[0091] The second arc-shaped portion 302 is provided on the first inner plate 102. The second arc-shaped portion 302 is connected to the first arc-shaped portion 301. The center of the second arc-shaped portion 302 is located on the side of the second arc-shaped portion 302 that is close to the first outer plate 201.

[0092] An extension 303 is provided on the second arc-shaped portion 302, extending towards the peripheral beam 400. Part of the extension 303 is connected to the upper crossbeam 401, and part of the extension 303 is connected to the door edge beam 402. The extension 303 is provided with a first weight-reducing hole 3011, and the back structure of the second weight-reducing hole 3031 is arched.

[0093] 1. This invention designs a support member 300 with a reinforcing structure inside the cavity of the car tailgate 1000. Two support members 300 are designed on the left and right sides. The support member 300 is designed as an S-shaped structure. The S-shaped structure has the characteristics of double arch and high strength, which improves its own strength. One end of the support member 300 is connected to the upper crossbeam 401 and the door side beam 402 of the car tailgate 1000, and the other end is connected to the middle third position of the first inner panel 102 of the car tailgate 1000. The structural strength of the door beam structure of the car tailgate 1000 is used to improve the structural strength of the first inner panel 102 of the car tailgate 1000.

[0094] 2. The present invention avoids vibration at the same frequency and reduces noise by designing one support member 300 with a thickness of 0.4 mm and the other support member 300 with a thickness of 0.6 mm. The support member 300 is provided with a first weight reduction hole 3011 for weight reduction, and an arched second weight reduction hole 3031 is designed at the connection position of the support member 300 and the upper crossbeam 401 and the door side beam 402 of the car tailgate 1000, that is, on the extension 303, to ensure connection strength while reducing weight.

[0095] 3. The inner panel 100 of the car rear door of the present invention is designed as five honeycomb hexagonal structures of different sizes. The honeycomb hexagonal structure has the characteristics of high stability and high strength to improve the sheet metal strength of the inner panel 100.

[0096] 4. This invention achieves frequency avoidance design and facilitates mold design and processing by designing the five polygonal reinforcing parts 10 into three different sizes; the space between the honeycomb hexagons is designed as a first reinforcing part 21 with a height of 1mm to form a relative triangular structure, which utilizes the high strength of the triangular structure to increase the connection strength.

[0097] 5. The present invention designs a 1mm high arched protrusion second reinforcing part 14 structure inside the hexagonal structure to further improve the strength of the hexagon. The arched protrusion second reinforcing part 14 is used to improve the strength of the inner plate of the hexagon. The front and rear sides of the inner plate 100 can be designed with arched structures with a height-to-width ratio of 0.03 and 0.11 respectively. The high strength of the arch is used to improve the overall strength of the inner plate 100.

[0098] 6. The present invention designs an arched reinforcing bracket 50 structure on the second inner plate 103 to connect the two second polygonal reinforcing parts 12 to the end position 40 of the inner plate 100. The arched reinforcing bracket 50 enhances the strength of both sides of the inner plate 100. At the same time, the thickness of the reinforcing bracket 50 can be designed to be 0.4 mm and 0.6 mm respectively, thereby avoiding the frequency of the two second polygonal reinforcing parts 12.

[0099] 7. The present invention provides a 0.2mm thick reinforcing plate 15 on the third polygonal reinforcing part 13 on the right side, thereby making the two third polygonal reinforcing parts 13 frequency-avoiding, thus increasing the strength of the polygonal reinforcing part 10 while achieving frequency avoidance design.

[0100] The automobile according to an embodiment of the present invention includes the above-described tailgate 1000.

[0101] According to an embodiment of the present invention, the strength of the inner panel 100 is increased by providing a plurality of polygonal reinforcing parts 10 arranged in sequence on the inner panel 100, and the strength of the inner panel 100 is further enhanced by the relatively stable property of the triangular space 20. In addition, a support member 300 is provided to support the outer panel 200, thereby improving the vibration damping performance of the car tailgate 1000, reducing vibration and noise, and improving the overall vehicle performance.

[0102] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A car tailgate (1000), characterized in that, include: An inner plate (100) is provided with a plurality of polygonal reinforcing parts (10), which are arranged sequentially in the left-right direction; wherein, some adjacent polygonal reinforcing parts (10) together with the front-back edge (30) of the inner plate (100) define a triangular space (20). An outer panel (200) is disposed on the inner panel (100) and together with the inner panel (100) defines a cavity; A plurality of support members (300) located within the cavity are used to support the outer plate (200); The support member (300) has one end located on the periphery of the inner plate (100) and the other end located on the inner plate (100) away from the periphery. The inner plate (100) includes a first inner plate (102) and a second inner plate (103). The second inner plate (103) is located on one side of the first inner plate (102), and a plurality of polygonal reinforcing parts (10) are arranged sequentially in the left-right direction of the second inner plate (103). The support member (300) is located on the first inner plate (102), and two adjacent polygonal reinforcing parts (10) together with the front-back edge (30) of the second inner plate (103) define a triangular space (20). The outer panel (200) includes: The first outer plate (201) is covered on the first inner plate (102), and the support member (300) is used to support the first outer plate (201); The second outer plate (202) covers the second inner plate (103); the support member (300) includes: a first arc-shaped portion (301) disposed on the first inner plate (102), the center of the first arc-shaped portion (301) being located on the side of the first arc-shaped portion (301) away from the first outer plate (201); and a second arc-shaped portion (302) disposed on the first inner plate (102), the second arc-shaped portion (302) connecting to the first arc-shaped portion (301), the center of the second arc-shaped portion (302) being located on the side of the second arc-shaped portion (302) closer to the first outer plate (201).

2. The automobile tailgate (1000) according to claim 1, characterized in that, The side of the first outer plate (201) away from the first inner plate (102) is constructed as a first smooth surface (2011), and the side of the second outer plate (202) away from the second inner plate (103) is constructed as a second smooth surface (2021), with the first smooth surface (2011) connecting to the second smooth surface (2021).

3. The automobile tailgate (1000) according to claim 1, characterized in that, The triangular space (20) is provided with a first reinforcing part (21), and a second reinforcing part (14) is provided on a portion of the polygonal reinforcing part (10).

4. The automobile tailgate (1000) according to claim 1, characterized in that, The plurality of polygonal reinforcements (10) include: A first polygonal reinforcing part (11) is provided in the middle of the second inner plate (103); Two second polygonal reinforcements (12), one of which is provided on each of the left and right sides of the first polygonal reinforcement (11). At least two third polygonal reinforcements (13) are provided on the side of the second polygonal reinforcement (12) away from the first polygonal reinforcement (11); The areas of the first polygonal reinforcement (11), the second polygonal reinforcement (12), and the third polygonal reinforcement (13) are different from each other.

5. The automobile tailgate (1000) according to claim 1, characterized in that, The number of edges (30) is two, namely a first edge (31) and a second edge (32). The first edge (31) and the second edge (32) are arranged in the front-back direction. The first edge (31) and the second edge (32) are constructed in an arch shape. The aspect ratio of the first edge (31) is different from that of the second edge (32).

6. The automobile tailgate (1000) according to claim 4, characterized in that, The second inner plate (103) is provided with two reinforcing brackets (50), each of the reinforcing brackets (50) is connected at one end to the second polygonal reinforcing part (12) and at the other end to the left end (40) or the right end (40) of the second inner plate (103). The two reinforcing brackets (50) have different thicknesses.

7. The automobile tailgate (1000) according to claim 1, characterized in that, The first inner plate (102) is provided with a connecting part (101), which connects the end of the first arc-shaped part (301) away from the second arc-shaped part (302). In the left and right direction, the perimeter is the left perimeter or the right perimeter. The left perimeter or the right perimeter is spaced apart from the connecting part (101) by a set distance, which is 1 / 3 of the left and right length of the first inner plate (102).

8. The automobile tailgate (1000) according to claim 1, characterized in that, Also includes: A peripheral beam (400) is provided with a hollow area, and a first inner plate (102) is provided in the hollow area. The periphery of the first inner plate (102) is connected to the peripheral beam (400).

9. The automobile tailgate (1000) according to claim 8, characterized in that, The support member (300) further includes: an extension (303) extending toward the peripheral beam (400) and connected to the peripheral beam (400); The peripheral beam (400) includes an upper crossbeam (401) and a door edge beam (402). The door edge beam (402) is connected to the upper crossbeam (401), a portion of the extension (303) is connected to the upper crossbeam (401), and a portion of the extension (303) is connected to the door edge beam (402).

10. A car, characterized in that, The vehicle includes a tailgate (1000) as described in any one of claims 1 to 9, wherein the tailgate (1000) is located at the rear of the vehicle.

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