Back door assembly and vehicle

Abstract

The utility model discloses a back door assembly and a vehicle, the back door assembly comprises a back door inner plate, a back door middle decoration plate and a back door outer plate, the back door inner plate, the back door middle decoration plate and / or the back door outer plate are made of plastic materials, and the back door outer plate is made of plastic materials. The back door inner plate, the back door middle decoration plate and the back door outer plate are fixedly connected in the inside-outside direction. The empennage base bearing piece is installed on the side, facing the back door middle decoration plate, of the back door inner plate, and the empennage base bearing piece is used for being connected with and supporting an empennage base. According to the back door assembly, the overall weight of the back door assembly is light, the weight reduction design is facilitated, the structural strength of the back door inner plate can be improved by arranging the empennage base bearing piece, and when the empennage structure is installed, the phenomenon that the back door assembly seriously deforms due to the fact that the acting force on the empennage structure acts on the back door assembly in the driving process can be avoided, and the service life of the back door assembly is prolonged. And the reliability of the back door assembly is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle technical field especially relates to a back door assembly and vehicle with the back door assembly. BACKGROUND

[0002] In the related art, the back door is used for opening or closing the back box, wherein, in some designs, the back door is provided with a tail wing structure, but the current back door is mostly made of steel or aluminum material, the overall weight is large, and the freedom degree of modeling is low, so there is room for improvement. SUMMARY

[0003] The utility model aims at solving one of the technical problems in the prior art. To this end, the utility model provides a back door assembly, the overall weight of the back door assembly is light, and the structural strength can be ensured to avoid the serious deformation of the back door assembly during driving.

[0004] According to the back door assembly of the utility model embodiment, the back door inner plate, the back door middle trim and / or the back door outer plate are made of plastic material, and the back door inner plate, the back door middle trim and the back door outer plate are fixedly connected in the inner and outer directions;The tail wing base receiving piece is installed on the side of the back door inner plate towards the back door middle trim, and the tail wing base receiving piece is used for connecting and supporting the tail wing base.

[0005] According to the back door assembly of the utility model embodiment, the overall weight of the back door assembly is light, and the structural strength of the back door inner plate can be improved by arranging the tail wing base receiving piece on the back door inner plate, and when the tail wing structure is installed, the back door assembly can maintain a stable structural state, so that the force on the tail wing structure during driving does not act on the back door assembly to cause serious deformation, the overall structural strength and reliability of the back door assembly are improved, and lightweight design is realized.

[0006] According to the back door assembly of some embodiments of the utility model, the material of the tail wing base receiving piece includes a fiber composite material.

[0007] According to the back door assembly of some embodiments of the utility model, the fiber composite material includes one or more of unidirectional fiber reinforced thermosetting composite material prepreg, unidirectional fiber reinforced thermoplastic composite material prepreg, unidirectional fiber dry wire, woven fiber reinforced thermosetting composite material prepreg, woven fiber reinforced thermoplastic composite material prepreg and woven fiber dry cloth.

[0008] According to the back door assembly of some embodiments of the utility model, the material of the tail wing base receiving piece includes one or more of aluminum alloy, magnesium aluminum alloy, ordinary steel material and hot forming steel material.

[0009] According to the tail wing base receiving member and the back door inner plate of some embodiments of the utility model, one or more of the following connection modes is used: gluing, screwing, riveting and welding.

[0010] According to the tail wing base receiving member and the back door inner plate of some embodiments of the utility model, the back door inner plate is provided with a hinge mounting plate, and the tail wing base receiving member is connected to at least part of the hinge mounting plate in an overlapping manner.

[0011] According to the tail wing base receiving member and the back door inner plate of some embodiments of the utility model, the overlapping width of the tail wing base receiving member and the hinge mounting plate is D, and D is greater than or equal to 10 mm.

[0012] According to the tail wing base receiving member and the back door inner plate of some embodiments of the utility model, the back door inner plate is further provided with a hinge reinforcing plate.

[0013] The back door inner plate is further provided with a door lock mounting plate.

[0014] According to the tail wing base receiving member and the back door inner plate of some embodiments of the utility model, the hinge reinforcing plate, the hinge mounting plate and / or the door lock mounting plate are integrally injection molded with the back door inner plate.

[0015] According to the tail wing base receiving member and the back door inner plate of some embodiments of the utility model, the back door inner plate is further provided with a hinge reinforcing plate.

[0016] The back door inner plate is further provided with a door lock mounting plate.

[0017] The utility model also provides a vehicle.

[0018] The vehicle according to the utility model comprises a tail wing structure and the back door assembly according to any one of the above embodiments.

[0019] The vehicle and the back door assembly have the same advantages as the prior art, and details are not repeated here.

[0020] Additional aspects and advantages of the utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0021] The above and / or additional aspects and advantages of the utility model will become apparent and more readily appreciated from the following description of the embodiments, with reference to the following drawings, in which:

[0022] Figure 1is a structure schematic view of a back door assembly of an embodiment of the utility model;

[0023] Figure 2 is an explosion view of a back door assembly of an embodiment of the utility model;

[0024] Figure 3 is an enlarged view of a back door assembly of an embodiment of the utility model at empennage base receiving member (with empennage structure);

[0025] Figure 4 is a wind pressure load force transmission schematic view of a back door inner plate of an embodiment of the utility model;

[0026] Figure 5 is a stress simulation view of empennage base receiving member in longitudinal direction of an embodiment of the utility model;

[0027] Figure 6 is a stress simulation view of empennage base receiving member in transverse direction of an embodiment of the utility model;

[0028] Figure 7 is a shearing stress simulation view of empennage base receiving member of an embodiment of the utility model;

[0029] Figure 8 is a simulation view of maximum stress area of back door middle trim of an embodiment of the utility model;

[0030] Figure 9 is a simulation view of maximum stress area of empennage base receiving member of an embodiment of the utility model;

[0031] Figure 10 is a simulation view of maximum stress area of back door inner plate of an embodiment of the utility model.

[0032] Reference signs:

[0033] Back door assembly 100,

[0034] Back door inner plate 1, empennage base receiving member 11, hinge mounting plate 12, hinge reinforcing plate 13, door lock mounting plate 14, back door soft glue 15,

[0035] Back door middle trim 2, high brake light mounting bracket 21,

[0036] Back door outer plate 3, tail light mounting bracket 31, Logo light mounting bracket 32,

[0037] Empennage structure 4, empennage plate 41, empennage base 42. Specific implementation

[0038] The embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are used only for the purpose of explaining the present application, and should not be understood as a limitation of the present application.

[0039] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0040] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0041] Reference is made below Figures 1-4 The rear door assembly 100 according to an embodiment of the present application is described, which is provided with a tail fin base receiving member 11, which can improve the structural strength of the rear door assembly 100, and can effectively disperse the force acting on the tail fin structure 4 when the tail fin structure 4 is installed, ensuring the stability of the structure of the rear door.

[0042] As Figures 1-4 As shown, the rear door assembly 100 according to an embodiment of the present application comprises a rear door inner panel 1, a rear door center console 2, a rear door outer panel 3 and a tail fin base receiving member 11.

[0043] The back door inner panel 1, the back door center panel 2, and the back door outer panel 3 are made of plastic. Specifically, at least one of the back door inner panel 1, the back door center panel 2, and the back door outer panel 3 is made of plastic. The back door inner panel 1, the back door center panel 2, and the back door outer panel 3 are fixedly connected in the inward and outward directions. This reduces the overall weight of the back door assembly 100, achieving a lightweight design for the back door assembly 100.

[0044] That is, the back door inner panel 1 is located on the inner side of the back door assembly 100. The back door outer panel 3 is located on the outer side of the back door assembly 100. The back door center panel 2 is installed between the back door outer panel 3 and the back door inner panel 1, and together they define a back door cavity. The back door cavity can be installed with internal structural components. The back door outer panel 3 can provide external decoration and protection on the outer side of the back door assembly 100.

[0045] It should be noted that the tailgate assembly 100 of the present invention can be installed with a spoiler structure 4. Specifically, the spoiler structure 4 can be mounted above the tailgate assembly 100 to form a spoiler structure above the rear of the vehicle, thereby improving vehicle downforce and handling stability. Furthermore, the spoiler structure 4 can be selectively mounted and fixed to the tailgate assembly 100, meaning that the spoiler structure 4 can be installed or removed from the tailgate assembly 100.

[0046] The wing base receiving member 11 is mounted on the side of the tailgate inner panel 1 facing the tailgate center trim panel 2, that is, the wing base receiving member 11 is mounted on the outer side of the tailgate inner panel 1, where the outer side may be the upper side. The wing base receiving member 11 is used to connect and support the wing base 42. That is, when the wing structure 4 is mounted on the tailgate assembly 100, the wing base 42 of the wing structure 4 can be mounted on the wing base receiving member 11, so that the wing structure 4 is connected to and supported by the wing base receiving member 11. In other words, the provision of the wing base receiving member 11 facilitates the effective dispersion of the force acting on the wing base 42. After the wing structure 4 is mounted on the tailgate assembly 100, the bottom of the wing base 42 has reliable support strength, thereby ensuring that the wing structure 4 is securely mounted on the tailgate assembly 100.

[0047] Therefore, by providing the tail wing base receiving member 11, the structural strength of the tailgate inner panel 1 can be increased. When the tail wing structure 4 is installed on the vehicle, the tailgate assembly 100 can be prevented from being significantly deformed during driving, thereby improving the structural strength of the tailgate inner panel 1.

[0048] According to the rear door assembly 100, the overall weight of the rear door assembly 100 is small, which is beneficial to realize lightweight design, and the tail wing base receiving piece 11 is arranged on the rear door inner plate 1, so that the structural strength of the rear door inner plate 1 is improved, the force on the tail wing structure 4 is prevented from acting on the rear door assembly 100 to cause serious deformation of the rear door assembly 100, the overall strength and reliability of the rear door assembly 100 are improved, and lightweight is considered.

[0049] In some embodiments, the material of the tail wing base receiving piece 11 includes a fiber composite material, that is, the structural strength of the tail wing base receiving piece 11 is enhanced by arranging the fiber composite material, so that the tail wing base receiving piece 11 has a stable structure state, and when the tail wing structure 4 is installed on the rear door assembly 100 and the tail wing base 42 is supported on the tail wing base receiving piece 11, the tail wing base receiving piece 11 will not have serious structural deformation due to excessive force on the tail wing base 42, the structural strength is improved, and the weight of the tail wing base receiving piece 11 is relatively light, which is beneficial to the lightweight design of the rear door assembly 100, and the rear door of the composite material has more freedom than the traditional sheet metal rear door in shape.

[0050] In further embodiments, the fiber composite material includes one or more of unidirectional fiber reinforced thermosetting composite material prepreg, unidirectional fiber reinforced thermoplastic composite material prepreg, unidirectional fiber dry wire, woven fiber reinforced thermosetting composite material prepreg, woven fiber reinforced thermoplastic composite material prepreg, and woven fiber dry cloth.

[0051] That is, the fiber composite material of the tail wing base receiving piece 11 can be made of at least one material, such as unidirectional fiber reinforced thermosetting composite material prepreg, or unidirectional fiber reinforced thermoplastic composite material prepreg, or one or more of the above composite materials. Therefore, the fiber composite material in the material of the tail wing base receiving piece 11 can be flexibly set according to actual needs, so as to not only ensure the structural strength and lightweight design of the tail wing base receiving piece 11, but also avoid high setting cost of the tail wing base receiving piece 11, realize comprehensive selection, and reduce the setting difficulty of the tail wing base receiving piece 11.

[0052] In some embodiments, the material of the tail wing base receiving piece 11 includes one or more of aluminum alloy, magnesium aluminum alloy, ordinary steel material, and hot-formed steel material, so that the material of the tail wing base receiving piece 11 can include fiber composite material, and can also be matched with one or more of aluminum alloy, magnesium aluminum alloy, ordinary steel material, and hot-formed steel material, so that the material of the tail wing base receiving piece 11 is more abundant, thereby better utilizing the performance of each material, that is, under the condition of ensuring the structural strength of the tail wing base receiving piece 11, the formability requirement, lightweight requirement and cost of the tail wing base receiving piece can also be balanced and adjusted.

[0053] In some embodiments, the tail wing base adapter 11 and the rear door inner panel 1 are connected by one or more of the following methods: gluing, screwing, riveting, and welding. That is, the tail wing base adapter 11 and the rear door inner panel 1 can be bonded, screwed, welded, or combined in different ways, thereby improving the flexibility of the connection between the tail wing base adapter 11 and the rear door inner panel 1 and reducing the difficulty of setting.

[0054] In some embodiments, the tail wing base adapter 11 and the rear door inner panel 1 are connected by one or more of the following methods: gluing, screwing, riveting, and welding. That is, the tail wing base adapter 11 and the rear door inner panel 1 can be bonded, screwed, welded, or combined in different ways, thereby improving the flexibility of the connection between the tail wing base adapter 11 and the rear door inner panel 1 and reducing the difficulty of setting.

[0055] In some embodiments, the rear door inner panel 1 is provided with a hinge mounting plate 12, which is used to connect and install a rear door hinge, so that the rear door inner panel 1 is movably connected to the vehicle body through the rear door hinge, thereby realizing the opening or closing of the rear door assembly 100.

[0056] In some embodiments, the tail wing base adapter 11 and the hinge mounting plate 12 are connected by at least partial overlap, so that force can be transmitted between the tail wing base adapter 11 and the hinge mounting plate 12, thereby forming mutual support and structural reinforcement. Specifically, when the force of the tail wing structure 4 is transmitted to the tail wing base adapter 11, a part of the force can be transmitted to the hinge mounting plate 12, and then dispersed to other positions, such as the hinge and the alignment block mounted on the hinge mounting plate 12, and then dispersed to the vehicle body. In this way, the support strength of the tail wing structure 4 can be improved.

[0057] In some embodiments, the overlap width of the tail wing base adapter 11 and the hinge mounting plate 12 is D, and satisfies: D≥10mm, that is, the overlap width of the tail wing base adapter 11 and the hinge mounting plate 12 is set to be greater than or equal to 10mm, such as 10mm, 12mm, 14mm, 15mm, 17mm, 18mm, 20mm, 23mm, 27mm, 27mm, 31mm, or other parameters.

[0058] Therefore, the overlap width of the tail wing base receiving member 11 and the hinge mounting plate 12 is set within the above range, so that a larger overlap area is formed therebetween, a larger force can be transmitted, the force on the tail wing structure 4 can be quickly dispersed, and the support strength of the tail wing structure 4 is improved.

[0059] In some embodiments, the hinge reinforcing plate 13 is further mounted on the back door inner panel 1, which can reinforce the structure of the back door inner panel 1, and the hinge reinforcing plate 13 can be connected with the hinge mounting plate 12 to jointly reinforce the structure of the tail wing base receiving member 11 and the area where the tail wing base receiving member 11 is located, thereby improving the structural strength.

[0060] In some embodiments, the hinge reinforcing plate 13 is further mounted on the back door inner panel 1, which can reinforce the structure of the back door inner panel 1, and the hinge reinforcing plate 13 can be connected with the hinge mounting plate 12 to jointly reinforce the structure of the tail wing base receiving member 11 and the area where the tail wing base receiving member 11 is located, thereby improving the structural strength.

[0061] In further embodiments, the hinge reinforcing plate 13, the hinge mounting plate 12 and / or the door lock mounting plate 14 are integrally injection molded with the back door inner panel 1. That is, the hinge reinforcing plate 13 can be integrally injection molded with the back door inner panel 1, or the hinge mounting plate 12 and the hinge reinforcing plate 13 can be welded into an integral whole and then integrally injection molded with the back door inner panel 1, or the door lock mounting plate 14 can be integrally injection molded with the back door inner panel 1, or at least two of the above structural members can be integrally injection molded with the back door inner panel 1. In this way, the connection strength of the hinge reinforcing plate 13, the hinge mounting plate 12 and the door lock mounting plate 14 with the back door inner panel 1 is enhanced, the integrated setting is realized, and the structural strength is improved.

[0062] In specific installation, the hinge reinforcing plate 13 and the hinge mounting plate 12 can be welded and fixed to form an integral whole, and then the integral whole formed by the hinge reinforcing plate 13 and the hinge mounting plate 12 is placed together with the door lock mounting plate 14 in a mold to form the back door inner panel 1 by insert injection molding process.

[0063] In some embodiments, the high brake light mounting bracket 21 is mounted on the back door middle trim panel 2, which is used to mount a brake light, such as a high brake light. The high brake light mounting bracket 21 can be fixedly connected to the back door middle trim panel 2 by adhesion to realize the connection and fixation of the two.

[0064] And / or, the tail lamp mounting bracket 31 and / or the logo lamp mounting bracket 32 are installed on the back door outer plate 3, that is, the tail lamp mounting bracket 31 or the logo lamp mounting bracket 32 is installed on the back door outer plate 3, or both of them are installed, specifically, the tail lamp mounting bracket 31 and the logo lamp mounting bracket 32 are bonded on the back door outer plate 3 to form an integral whole.

[0065] Wherein, in the specific installation of the back door assembly 100, the following installation steps can be performed:

[0066] 1, the hinge reinforcing plate 13 and the hinge mounting plate 12 are connected into an assembly through a welding process;

[0067] 2, the assembly formed by welding the hinge reinforcing plate 13 and the hinge mounting plate 12 and the door lock mounting plate 14 are put into a mold to form the back door inner plate 1 through insert injection molding process;

[0068] 3, the tail lamp mounting bracket 31 and the logo lamp mounting bracket 32 are bonded with the back door outer plate 3 through structural glue;

[0069] 4, the back door middle trim plate 2 and the high brake lamp mounting bracket 21 are bonded through structural glue;

[0070] 5, the back door outer plate 3 with the tail lamp mounting bracket 31 and the logo lamp mounting bracket 32 bonded, and the whole piece with the high brake lamp mounting bracket 21 and the back door middle trim plate 2 bonded are bonded through structural glue;

[0071] 6, the tail wing base receiving piece 11 and the back door inner plate 1 are bonded through structural glue;

[0072] 7, the back door soft glue 15 and the back door inner plate 1 are clamped;

[0073] 8, the combined piece formed by bonding the back door outer plate 3 and the back door middle trim plate 2 and the back door inner plate 1 are finally bonded;

[0074] 9, the tail wing base 42 is connected and fastened with the back door middle trim plate 2, the tail wing base receiving piece 11 and the back door inner plate 1 through M bolts.

[0075] Therefore, the back door assembly 100 designed by the above structure in the utility model can realize the innovative combination of the carbon fiber material tail wing base receiving piece 11 and the back door inner plate 1, and can break through the key technologies such as the modular structure design of the back door with different configurations, the carbon-plastic bonding process and the carbon-plastic simulation analysis, so that the weight of the sheet metal back door can be reduced by 30%, and the 2000N tail wing wind pressure load can be also borne.

[0076] That is, the rear door assembly 100 in the utility model, adopt innovative structure design, from outside to inside in turn for appearance layer, force transmission layer, bearing layer and local reinforcement layer. As appearance layer's rear door outer plate 3 and rear door middle trim 2 adopt conventional plastic PP+EPDM-TD30 and PC+ABS material, after spraying paint, play appearance decoration function;As force transmission layer's empennage base receiving piece 11 adopt high modulus 12K T700 carbon fiber twill fabric prepreg and be pasted, mainly play stress, strain's quick transmission dispersion function, reduce stress concentration effect, prevent local damage;As bearing layer's rear door inner plate 1 adopt conventional PP+LGF40 material, bear the stress, tension, shear force etc. of empennage base receiving piece 11 dispersion down mechanical load;Local reinforcement layer's hinge reinforcing plate 13 adopt HC300 material, mainly in hinge, door lock, guide block concentrated stress area increases, to reinforce local strength.

[0077] And, the following will be combined with the drawings Figures 5-10 The effect state of the rear door assembly 100 of the utility model in the self-strength simulation verification is described;Wherein, the fiber direction is called longitudinal direction, recorded as coordinate direction 1, and the strength is expressed as longitudinal tensile strength Xt / compressive strength Xc;The direction perpendicular to the fiber is called transverse direction, recorded as coordinate direction 2, and the strength is expressed as transverse tensile strength Yt / compressive strength Yc / shear strength S12;

[0078] Wherein, as Figure 5 Indicated, the stress of empennage base receiving piece 11 in 1 direction: tensile stress 261.223MPa, compressive stress 18.822MPa, not failure (Xt=801MPa, Xc=742MPa);As Figure 6 Indicated, the stress of empennage base receiving piece 11 in 2 direction: tensile stress 490.736MPa, compressive stress 32.173MPa, not failure (Yt=788MPa, Yc=758MPa);And, as Figure 7 Indicated, the maximum shear stress of empennage base receiving piece 11 is 22.319MPa, not failure (S12=77MPa);

[0079] And, the rear door assembly 100 generates 2000N downward pressure on the spoiler structure 4 under the condition of high speed 300kph to improve the vehicle handling stability, the 2000N downward pressure is transmitted to the rear door middle panel 2 through the spoiler base receiving member 11, the rear door middle panel 2 is in close contact with the spoiler base receiving member 11, so that the force is quickly dispersed and transmitted to the spoiler base receiving member 11, the dispersed pressure, stress and shear force are quickly absorbed, received and dispersed to the rear door inner panel 1 through the spoiler base receiving member 11 made of carbon fiber material, and the force is further dispersed to the vehicle body through the sealing strip, door lock, hinge, electric support rod, buffer block and guide block connected to the rear door inner panel 1, so that the stress concentration effect is reduced, local damage is prevented, and the rear door assembly is prevented from yielding.

[0080] Specifically, the rear door assembly 100 generates maximum stress in the area of the spoiler base receiving member 11 under the condition of maximum wind pressure 2000N, the maximum stress of the rear door middle panel 2 is as follows Figure 8 As shown in the figure, the maximum stress of the rear door middle panel 2 is 12.591Mpa, which does not exceed the yield strength of PC+ABS material 25.64Mpa; and as shown in the figure Figure 9 The maximum stress of the spoiler base receiving member 11 is 460.631Mpa, which does not exceed the yield strength of the carbon fiber material itself 750Mpa; and as shown in the figure Figure 10 The maximum stress of the rear door inner panel 1 is 48.794MPa, which does not exceed the yield strength of the PP+LGF40 material of the rear door inner panel 1 itself 73.3Mpa.

[0081] Therefore, the force of the rear door assembly 100 on the spoiler structure 4 can be effectively dispersed, and the condition of serious deformation of the rear door assembly 100 during driving is avoided, and the structural safety of the rear door assembly 100 is improved.

[0082] The utility model further provides a vehicle.

[0083] According to the vehicle of the utility model embodiment, the spoiler structure 4 includes a spoiler plate 41 and a spoiler base 42, the spoiler base 42 is connected to the bottom of the spoiler plate 41, and the spoiler base 42 is connected with the rear door middle panel 2 and the spoiler base receiving member 11. Therefore, the overall weight of the rear door assembly 100 is small, which is beneficial to realize the lightweight design of the vehicle, the structural strength of the rear door inner panel 1 can be improved by arranging the spoiler base receiving member 11 on the rear door inner panel 1, and the rear door assembly 100 can maintain a stable structure when the spoiler structure 4 is installed, so that the force on the spoiler structure 4 during driving does not act on the rear door assembly 100 to cause serious deformation, the overall strength and reliability of the rear door assembly 100 are improved, and the lightweight design is considered.

[0084] The tail wing structure 4 includes a fixed tail wing, an electric tail wing, or a spoiler, etc.

[0085] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0086] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A back door assembly, characterized in that: include: A back door inner panel (1), a back door middle panel (2) and a back door outer panel (3), wherein the back door inner panel (1), the back door middle panel (2) and / or the back door outer panel (3) are made of plastic material, and the back door inner panel (1), the back door middle panel (2) and the back door outer panel (3) are fixedly connected in the inner and outer directions; A tail wing base receiving member (11) is installed on a side of the tailgate inner panel (1) facing the tailgate center trim panel (2), and the tail wing base receiving member (11) is used to connect and support the tail wing base (42).

2. The tailgate assembly according to claim 1, characterized in that: The material of the tail wing base receiving component (11) includes fiber composite material.

3. The tailgate assembly according to claim 2, characterized in that: The fiber composite material includes one of unidirectional fiber reinforced thermosetting composite prepreg, unidirectional fiber reinforced thermoplastic composite prepreg, unidirectional fiber dry yarn, woven fiber reinforced thermosetting composite prepreg, woven fiber reinforced thermoplastic composite prepreg, and woven fiber dry cloth.

4. The tailgate assembly according to claim 1, characterized in that: The material of the tail wing base receiving part (11) includes one of aluminum alloy, magnesium aluminum alloy, ordinary steel and hot-formed steel.

5. The tailgate assembly according to claim 1, characterized in that: The tail wing base receiving member (11) is connected to the rear door inner panel (1) by one or more of gluing, screwing, riveting and welding; And / or, the molding process of the tail base receiving part (11) adopts one or more of autoclave, RTM, wet molding, dry molding, and SMC.

6. The tailgate assembly according to any one of claims 1 to 5, characterized in that: The rear door inner panel (1) is provided with a hinge mounting plate (12), and the tail wing base receiving member (11) is overlapped and connected to at least a portion of the hinge mounting plate (12).

7. The tailgate assembly according to claim 6, characterized in that: The overlap width between the tail base receiving member (11) and the hinge mounting plate (12) is D, and satisfies: D≥10mm.

8. The tailgate assembly according to claim 6, characterized in that: The back door inner panel (1) is also equipped with a hinge reinforcement plate (13); And / or, the back door inner panel (1) is further installed with a door lock mounting plate (14).

9. The tailgate assembly according to claim 8, characterized in that: The hinge reinforcement plate (13), the hinge mounting plate (12) and / or the door lock mounting plate (14) are integrally injection-molded with the rear door inner plate (1).

10. The tailgate assembly according to any one of claims 1 to 5, characterized in that: The rear door center trim (2) is equipped with a high brake light mounting bracket (21); And / or, the rear door outer panel (3) is equipped with a taillight mounting bracket (31) and / or a logo light mounting bracket (32).

11. A vehicle, characterized in that: The invention comprises a tail wing structure (4) and a tail door assembly according to any one of claims 1 to 10, wherein the tail wing structure (4) comprises a tail wing plate (41) and a tail wing base (42), the tail wing base (42) is connected to the bottom of the tail wing plate (41), and the tail wing base (42) is connected to the tail door center trim (2) and the tail wing base receiving member (11).

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