Tail door frame and vehicle

Abstract

The utility model relates to the technical field of vehicles, in particular to a tail door frame and a vehicle. The tail door frame comprises a rear side wall inner plate, a top rear cross beam, a D column upper outer plate and an upper connector assembly, and the upper connector assembly is arranged on the rear side wall inner plate and connected with the top rear cross beam, the rear side wall inner plate and the D column upper outer plate. The upper connector assembly comprises a first connecting partition plate and a second connecting partition plate, the first connecting partition plate is provided with a first cavity, the first cavity corresponds to a cavity of the top rear cross beam, and a part of structure of the second connecting partition plate is in lap joint with a part of structure of the first connecting partition plate. According to the tail door frame, the first connecting partition plate, the second connecting partition plate and the rear side wall inner plate are connected to form the closed cavity, the cavity and the cavity of the top rear cross beam are oppositely arranged, and the overall strength and torsional rigidity of the tail door frame are improved. Meanwhile, a part of structure of the first connecting partition plate is in lap joint with a part of structure of the second connecting partition plate, a supporting structure of the upper connector assembly is added, and the torsional mode and the torsional rigidity are effectively improved.

Description

Technical Field

[0001] This application relates to the technical field of vehicles, and particularly to a tail door frame and a vehicle. Background Art

[0002] The tail door frame structure is a main component of the vehicle body structure. Besides having an important impact on the overall vehicle stiffness, mode, and NVH (Noise, Vibration, Harshness), the size of the tail door opening also affects the passability of goods. Especially for commercial vehicles, the existing tail door frame structure has weak strength, insufficient stiffness and mode, resulting in the inability to further increase the size of the tail door opening and affecting the passability of goods. Summary of the Utility Model

[0003] An embodiment of this application provides a tail door frame and a vehicle, aiming to improve the torsional stiffness of the tail door frame.

[0004] An embodiment of this application provides a tail door frame for a vehicle. The tail door frame includes an inner rear side panel, a top rear cross member, an outer upper D-pillar panel, and an upper joint assembly. The upper joint assembly is arranged on the inner rear side panel, and the upper joint assembly connects the top rear cross member, the inner rear side panel, and the outer upper D-pillar panel.

[0005] Wherein, the upper joint assembly includes a first connecting partition and a second connecting partition. The first connecting partition has a first cavity, and the first cavity is correspondingly arranged with the cavity of the top rear cross member. A part of the structure of the second connecting partition overlaps with a part of the structure of the first connecting partition.

[0006] In a possible design, the first connecting partition has a first flanging and a second flanging, and both the first flanging and the second flanging are used for welding with the inner rear side panel.

[0007] The second connecting partition has a third flanging and a fourth flanging. The third flanging is used for welding with the inner rear side panel, and the fourth flanging overlaps above the first connecting partition.

[0008] In a possible design, the second connecting partition is provided with a recessed part. An installation part is arranged at the overlapping position of the recessed part, the first flanging, and the inner rear side panel, and the installation part is used for installing a seat belt.

[0009] In a possible design, along the height direction of the vehicle, the length of the first connecting partition is equal to the length of the second connecting partition.

[0010] Or, along the height direction of the vehicle, the length of the second connecting partition is shorter than the length of the first connecting partition.

[0011] In a possible design, the rear door frame further includes a support plate, an inner rear end beam plate, and an outer rear end beam plate. Along the length direction of the vehicle, the support plate is located between the inner rear end beam plate and the outer rear end beam plate;

[0012] The support plate is provided with a second cavity, a fifth flange, and a sixth flange. Along the width direction of the vehicle, the fifth flange and the sixth flange are located on both sides of the orifice of the second cavity, and the fifth flange and the sixth flange are welded to the inner rear end beam plate.

[0013] In a possible design, along the length direction of the vehicle, the orifice of the second cavity is disposed opposite to the bottom longitudinal beam, and the fifth flange and the sixth flange can respectively align with the two edges of the bottom longitudinal beam along the width direction of the vehicle.

[0014] In a possible design, the support plate is further provided with a seventh flange and an eighth flange connected to the inner rear end beam plate;

[0015] Along the width direction of the vehicle, the fifth flange and the seventh flange are located on the same side of the second cavity, and the sixth flange and the eighth flange are located on the other side of the second cavity;

[0016] There is a first corner position between the fifth flange and the seventh flange, and the first corner position has a first notch; there is a second corner position between the sixth flange and the eighth flange, and the second corner position has a second notch.

[0017] In a possible design, the rear door frame further includes a lower D-pillar corner plate;

[0018] The support plate is provided with a ninth flange, and the ninth flange is connected to the lower D-pillar corner plate.

[0019] In a possible design, the support plate is connected to the outer rear end beam plate by a fixing member;

[0020] A groove is provided on one side of the support plate where it is connected to the outer rear end beam plate.

[0021] An embodiment of the present application further provides a vehicle, which includes:

[0022] A vehicle body;

[0023] A rear door frame, the rear door frame is installed on the vehicle body, and the rear door frame is the rear door frame described above.

[0024] In the present application, the upper joint assembly of the tailgate frame is designed as two overlapping cavity structures, and the support plate of the tailgate frame is designed as a closed cavity structure connected to the bottom longitudinal beam, so as to improve the connection strength and torsional stiffness of the tailgate frame, and improve the torsional stiffness and torsional mode of the whole vehicle, thereby increasing the size of the door opening formed by the tailgate frame and improving the passability of cargo.

[0025] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of a partial structure of a vehicle in one embodiment;

[0027] Figure 2 for Figure 1 Structural schematic diagram of the middle and upper joint;

[0028] Figure 3 for Figure 1 Structural diagram of the middle and lower joints;

[0029] Figure 4 A schematic diagram of a partial structure of a vehicle provided in the present application in an embodiment;

[0030] Figure 5 for Figure 4 A magnified schematic diagram of the middle part;

[0031] Figure 6 for Figure 5 Schematic cross-sectional view of ;

[0032] Figure 7 for Figure 4 The enlarged schematic diagram of the middle B part;

[0033] Figure 8 It is a schematic diagram of the connection between the support plate, the inner plate of the tail beam and the lower corner plate of the D-pillar;

[0034] Figure 9 This is a schematic diagram of the structure of the support plate provided in this application.

[0035] Reference numerals:

[0036] 1-Tailgate frame;

[0037] 11-rear side panel inner panel;

[0038] 12-top rear crossbeam;

[0039] 13-D column upper outer plate;

[0040] 14-upper joint assembly;

[0041] 141-first connecting partition;

[0042] 141a - First cavity

[0043] 141b - First flanging

[0044] 141c - Second flanging

[0045] 142 - Second connecting partition board

[0046] 142a - Third flanging

[0047] 142b - Fourth flanging

[0048] 142c - Concave part

[0049] 142d - Installation part

[0050] 142e - Third cavity

[0051] 15 - Support plate

[0052] 151 - Second cavity

[0053] 152 - Fifth flanging

[0054] 153 - Sixth flanging

[0055] 154 - Seventh flanging

[0056] 155 - Eighth flanging

[0057] 156 - First corner position

[0058] 156a - First notch

[0059] 157 - Second corner position

[0060] 157a - Second notch

[0061] 158 - Ninth flanging

[0062] 159 - Groove

[0063] 15a - First support surface

[0064] 15b - Second support surface

[0065] 15b1 - Connecting hole

[0066] 15c - Third support surface

[0067] 15c1 - Reinforcing rib

[0068] 15c2 - Weight - reducing hole

[0069] 16 - Inner plate of tail beam

[0070] 161 - The first side;

[0071] 162 - The second side;

[0072] 17 - The outer plate of the tail beam;

[0073] 18 - The outer plate of the rear side panel;

[0074] 19 - The lower corner plate of the D-pillar;

[0075] 1a - The upper joint;

[0076] 1b - The lower joint;

[0077] 2 - The bottom longitudinal beam.

[0078] The accompanying drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with this application, and are used together with the specification to explain the principles of this application. Detailed implementation manners

[0079] For a better understanding of the technical solutions of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0080] It should be clear that the described embodiments are only a part of the embodiments of this application, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts belong to the scope protected by this application.

[0081] The terms used in the embodiments of this application are only for the purpose of describing specific embodiments, and are not intended to limit this application. The singular forms of "a", "the", and "said" used in the embodiments of this application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0082] It should be understood that the term " / and" used herein is only a description of the associated relationship of the associated objects, indicating that three relationships may exist. For example, A and / or B may mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " herein generally means that the associated objects before and after are in an "or" relationship.

[0083] It should be noted that the orientation terms such as "upper", "lower", "left", and "right" described in the embodiments of this application are described from the angles shown in the accompanying drawings, and should not be construed as limiting the embodiments of this application. In addition, in the context, it should also be understood that when it is mentioned that an element is connected "above" or "below" another element, it can not only be directly connected "above" or "below" another element, but also be indirectly connected "above" or "below" another element through an intermediate element.

[0084] This embodiment provides a vehicle, which can be a commercial vehicle, that is, an automobile used for transporting people and goods.

[0085] As Figure 1 shown is a schematic diagram of a partial structure of the vehicle in one embodiment. The vehicle includes a body and a rear door frame 1, and the rear door frame 1 is installed on the body.

[0086] Specifically, the rear door frame 1 includes an inner rear side panel 11, an outer rear side panel (not shown in the figure), a top rear cross member 12, an outer upper D-pillar panel 13, and an upper joint 1a. The upper joint 1a has a tee structure and is disposed on the inner rear side panel 11. One end of the upper joint 1a in the vehicle width direction X is connected to the top rear cross member 12, and a side end of the upper joint 1a in the vehicle length direction Y is connected to the outer upper D-pillar panel 13. The upper joint 1a serves to connect the top rear cross member 12, the outer upper D-pillar panel 13, and the inner rear side panel 11. The outer rear side panel covers the inner rear side panel 11, and the upper joint 1a and the outer upper D-pillar panel 13 are located in the cavity formed by the outer rear side panel and the inner rear side panel 11, and the outer upper D-pillar panel 13 can connect the inner rear side panel 11 and the outer rear side panel.

[0087] The rear door frame 1 further includes an inner tail end beam plate 16, an outer tail end beam plate 17, and a lower joint 1b. The lower joint 1b has a U-shaped structure. Along the vehicle length direction Y, the lower joint 1b is located between the inner tail end beam plate 16 and the outer tail end beam plate 17, and the cavity opening of the lower joint 1b faces inward in the vehicle width direction X.

[0088] As Figure 2 shown is a schematic diagram of the upper joint. The upper joint 1a is a tee-shaped hollow structure. Figure 3 Shown is a schematic diagram of the lower joint. The lower joint 1b is a U-shaped single plate structure. Both the upper joint 1a and the lower joint 1b lack a support structure, and their bending and torsional rigidity are poor, resulting in insufficient stiffness and modal properties of the rear door frame 1, and the door opening size formed by the rear door frame 1 cannot be further increased.

[0089] In view of this, this embodiment provides a rear door frame to solve the above problems.

[0090] As Figure 4 described is a schematic diagram of the rear door frame 1. As Figure 5 shown is Figure 4 the enlarged schematic diagram of part A in Figure 4 and Figure 5, the tail door frame 1 includes an inner rear side panel 11, a top rear cross member 12, an outer upper D-pillar panel 13, and an upper joint assembly 14. The upper joint assembly 14 is disposed on the inner rear side panel 11 and connects the top rear cross member 12, the inner rear side panel 11, and the outer upper D-pillar panel 13. Among them, the upper joint assembly 14 includes a first connecting partition 141 and a second connecting partition 142, and a partial structure of the second connecting partition 142 overlaps with a partial structure of the first connecting partition 141.

[0091] In this embodiment, the original upper joint 1a is set as the connected first connecting partition 141 and second connecting partition 142, which simplifies the forming difficulty. And a partial structure of the first connecting partition 141 is set to overlap with a partial structure of the second connecting partition 142, which increases the support structure of the upper joint assembly 14 and effectively improves the torsional mode and torsional stiffness.

[0092] Specifically, please refer to Figure 6 , as Figure 6 shown in Figure 5 is a schematic cross-sectional view. The tail door frame 1 includes an inner rear side panel 11, an outer rear side panel 18, a first connecting partition 141, a second connecting partition 142, and an outer upper D-pillar panel 13. The first connecting partition 141, the second connecting partition 142, and the outer upper D-pillar panel 13 are disposed in a cavity formed by the inner rear side panel 11 and the outer rear side panel 18. The first connecting partition 141 has a first flanging 141b and a second flanging 141c, and both the first flanging 141b and the second flanging 141c are welded to the inner rear side panel 11, so that the first connecting partition 141 forms a closed first cavity 141a, and the first cavity 141a is correspondingly arranged with the cavity of the top rear cross member 12.

[0093] Among them, please continue to refer to Figure 6 , the second flanging 141c of the first connecting partition 141 is welded to the inner rear side panel 11, one end of the outer upper D-pillar panel 13 is welded to the second flanging 141c of the first connecting partition 141, and the other end is welded to the outer rear side panel 18, realizing the connection of the outer upper D-pillar panel 13 to the inner rear side panel 11 and the outer rear side panel 18.

[0094] Please continue to refer to Figure 6 , the second connecting partition 142 has a third flanging 142a and a fourth flanging 142b. The third flanging 142a is used for welding to the inner rear side panel 11, and the fourth flanging 142b overlaps above the first connecting partition 141, so that the second connecting partition 142 forms a closed third cavity 142e. Among them, the connection method between the fourth flanging 142b and the first connecting partition 141 is welding.

[0095] In this embodiment, the cross-section of the first connecting partition plate 141 is in a "ji"-shaped structure. After the first connecting partition plate 141 is connected to the inner rear side panel 11, a closed first cavity 141a is formed, so that the cavities of each component of the tail door frame 1 (the first cavity 141a, the cavity of the top rear cross member 12, the cavity formed by the inner rear side panel 11 and the outer rear side panel 18, and the cavity formed by the inner tail end beam and the outer tail end beam) are approximately connected, approximately forming an annular cavity structure, which improves the overall strength and torsional stiffness of the tail door frame 1. Therefore, on the basis of ensuring the structural strength of the tail door frame 1, it is beneficial to increase the size of the door opening formed by the tail door frame 1.

[0096] In addition, in this embodiment, the fourth flanging 142b of the second connecting partition plate 142 overlaps on the first cavity 141a of the first connecting partition plate 141 (not on the flanging), so that an approximately reinforcing plate structure can be formed between the first connecting partition plate 141 and the second connecting partition plate 142 in a lap joint form, providing support for the middle position between the first connecting partition plate 141 and the second connecting partition plate 142, and improving the strength of the upper joint assembly 14.

[0097] Further, along the vehicle height direction Z, the length of the first connecting partition plate 141 may be equal to the length of the second connecting partition plate 142. Or, please continue to refer to Figure 5 along the vehicle height direction Z, the length of the second connecting partition plate 142 is shorter than the length of the first connecting partition plate 141.

[0098] In this embodiment, the second connecting partition plate 142 is farther away from the upper outer D-pillar panel 13 than the first connecting partition plate 141, and the second connecting partition plate 142 has a relatively small impact on the overall structural strength of the tail door frame 1. Therefore, the size of the second connecting partition plate 142 can be appropriately reduced to save materials and reduce costs.

[0099] In some embodiments, a part of the structure of the first connecting partition plate 141 may overlap above the second connecting partition plate 142. However, since the length of the second connecting partition plate 142 may be shorter than the length of the first connecting partition plate 141, the overlapping effect is not as good as that of a part of the structure of the second connecting partition plate 142 overlapping on a part of the structure of the first connecting partition plate 141.

[0100] Please continue to refer to Figure 5, the second connecting partition plate 142 is provided with a recess 142c, and the recess 142c is located between the third flanging 142a and the fourth flanging 142b. The recess 142c abuts against a partial structure of the first flanging 141b, so that a partial structure of the recess 142c, the first flanging 141b, and a partial structure of the rear side inner panel 11 overlap. An installation part 142d is arranged at the overlapping position of the recess 142c, the first flanging 141b, and the rear side inner panel 11, and the installation part 142d is used for installing a seat belt. In this embodiment, by arranging the installation part 142d at the overlapping position of the recess 142c, the first flanging 141b, and the rear side inner panel 11, the structural strength of the installation part 142d is enhanced, thereby ensuring the safety of the seat belt.

[0101] Among them, the installation part 142d can be a through hole penetrating the recess 142c, the first flanging 141b, and the rear side inner panel 11. Specifically, an assembly nut can be installed on the side of the recess 142c away from the rear side inner panel 11, and one end of a bolt can penetrate through the assembly part of the seat belt and the through hole to be connected with the assembly nut. Compared with bonding the assembly part of the seat belt to the rear side panel, this embodiment ensures the stability of the seat belt installation, thereby further ensuring the safety of passengers.

[0102] As Figure 7 shown in Figure 4 is a schematic enlarged view of part B in

[0103] Among them, along the vehicle height direction Z, the cross-section of the support plate 15 is in a "several" shape. The support plate 15 is provided with a second cavity 151, a fifth flanging 152, and a sixth flanging 153. Along the vehicle width direction X, the fifth flanging 152 and the sixth flanging 153 are located on both sides of the orifice of the second cavity 151. The fifth flanging 152 and the sixth flanging 153 are welded to the rear side inner panel 16, so that the second cavity 151 forms a closed cavity structure to increase the structural strength of the support plate 15, thereby improving the torsional stiffness and torsional mode of the tail door frame 1.

[0104] Along the vehicle length direction Y, the orifice of the second cavity 151 is arranged opposite to the bottom longitudinal beam 2, and the fifth flanging 152 and the sixth flanging 153 can be respectively aligned with the two edges of the bottom longitudinal beam 2 along the vehicle width direction, so that the support plate 15 is aligned with the bottom longitudinal beam 2 along the vehicle length direction Y, so that the second cavity 151 formed by the support plate 15 is arranged opposite to the cavity of the bottom longitudinal beam 2, further improving the structural stability of the vehicle body.

[0105] As Figure 8The figure shows a schematic diagram of the connection between the support plate 15, the inner plate 16 of the rear end beam, and the lower corner plate 19 of the D-pillar. The inner plate 16 of the rear end beam has a certain bending shape, with a first surface 161 and a second surface 162 on its inner side. The fifth flanging 152 and the sixth flanging 153 are connected to the first surface 161. The support plate 15 is also provided with a seventh flanging 154 and an eighth flanging 155 connected to the second surface 162. In this embodiment, by providing more flangings on the support plate 15 to connect the inner plate 16 of the rear end beam, the connection strength between the support plate 15 and the inner plate 16 of the rear end beam is increased.

[0106] Among them, along the vehicle width direction X, the fifth flanging 152 and the seventh flanging 154 are on the same side of the second cavity 151, and the sixth flanging 153 and the eighth flanging 155 are on the other side of the second cavity 151. Since there is a bending angle between the first surface 161 and the second surface 162 of the inner plate 16 of the rear end beam, correspondingly, there is a first corner position 156 between the fifth flanging 152 and the seventh flanging 154, and a second corner position 157 between the sixth flanging 153 and the eighth flanging 155. Specifically, the first corner position 156 has a first notch 156a, that is, the fifth flanging 152 and the seventh flanging 154 are discontinuous, so as to reduce the risk of cracking of the fifth flanging 152 and the seventh flanging 154 during the forming process. The second corner position 157 has a second notch 157a, that is, the sixth flanging 153 and the eighth flanging 155 are discontinuous, so as to reduce the risk of cracking of the sixth flanging 153 and the eighth flanging 155 during the forming process.

[0107] As Figure 9 shown in the schematic diagram of the support plate 15, please refer to Figure 8 and Figure 9 , the tail door frame 1 further includes the lower corner plate 19 of the D-pillar. The support plate 15 is provided with a ninth flanging 158, and the ninth flanging 158 is connected to the lower corner plate 19 of the D-pillar to realize the connection between the inner plate 16 of the rear end beam and the lower corner plate 19 of the D-pillar.

[0108] Please continue to refer to Figure 9 , the support plate 15 is provided with a first support surface 15a, a second support surface 15b, and a third support surface 15c. The second support surface 15b is located between the first support surface 15a and the third support surface 15c. The fifth flanging 152, the seventh flanging 154, and the ninth flanging 158 are formed by the deformation of part of the structure of the first support surface 15a, and the sixth flanging 153 and the eighth flanging 155 are formed by the deformation of part of the structure of the second support surface 15b. It should be noted that there is a third notch between the fifth flanging 152 and the ninth flanging 158 to reduce the risk of cracking during their forming process.

[0109] Among them, the second support surface 15b is connected to the tail end beam outer plate 17. Specifically, the second support surface 15b is provided with a connecting hole 15b1, and the tail end beam outer plate 17 is provided with a fixing hole (not shown in the figure). The fixing part (such as a bolt) passes through the connecting hole 15b1 and the fixing hole to connect the support plate 15 and the tail end beam outer plate 17.

[0110] Since the larger the fitting area between the parts, the higher the matching accuracy requirement between the parts, in this regard, the second support surface 15b can also be provided with a groove 159 to reduce the contact area between the second support surface 15b and the tail beam outer plate 17, thereby improving the matching accuracy between the two.

[0111] Please continue to refer to Figure 9 The first support surface 15a and the third support surface 15c are provided with reinforcing ribs 15c1 and weight-reducing holes 15c2 to improve the structural strength of the support plate 15 and reduce the weight of the support plate 15. The weight-reducing holes 15c2 can be provided at the reinforcing ribs 15c1. At the same time, the weight-reducing holes 15c2 are also conducive to increasing the electrophoretic painting effect of the support plate 15.

[0112] To summarize, in this embodiment, the upper joint assembly 14 of the tailgate frame 1 is designed as two overlapping cavity structures, and the support plate 15 of the tailgate frame 1 is designed as a closed cavity structure connected to the bottom longitudinal beam 2, so as to improve the connection strength and torsional stiffness of the tailgate frame 1, and achieve an increase in the torsional stiffness (approximately 10%) and torsional mode (approximately 14%) of the whole vehicle, thereby increasing the size of the door opening formed by the tailgate frame 1 (Z direction +15mm, X direction +30mm), thereby improving the passability of cargo.

[0113] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A tail door frame for a vehicle, characterized in that, The rear door frame (1) includes an inner rear quarter panel (11), a top rear cross member (12), an outer upper D-pillar panel (13), and an upper joint assembly (14). The upper joint assembly (14) is disposed on the inner rear quarter panel (11), and the upper joint assembly (14) connects the top rear cross member (12), the inner rear quarter panel (11), and the outer upper D-pillar panel (13). Wherein, the upper joint assembly (14) includes a first connecting partition plate (141) and a second connecting partition plate (142). The first connecting partition plate (141) has a first cavity (141a), and the first cavity (141a) is correspondingly arranged with the cavity of the top rear cross member (12). A partial structure of the second connecting partition plate (142) overlaps with a partial structure of the first connecting partition plate (141).

2. The tail doorframe according to claim 1, wherein, The first connecting partition plate (141) has a first flanging (141b) and a second flanging (141c), and both the first flanging (141b) and the second flanging (141c) are welded to the inner rear quarter panel (11). The second connecting partition plate (142) has a third flanging (142a) and a fourth flanging (142b). The third flanging (142a) is welded to the inner rear quarter panel (11), and the fourth flanging (142b) overlaps above the first connecting partition plate (141).

3. The tail doorframe according to claim 2, characterized in that, The second connecting partition plate (142) is provided with a recessed portion (142c). An installation portion (142d) is provided at an overlapping position of the recessed portion (142c), the first flanging (141b), and the inner rear quarter panel (11). The installation portion (142d) is used for installing a seat belt.

4. The tail door frame according to claim 1, characterized in that, Along the height direction (Z) of the vehicle, the length of the first connecting partition plate (141) is equal to the length of the second connecting partition plate (142). Or, along the height direction (Z) of the vehicle, the length of the second connecting partition plate (142) is shorter than the length of the first connecting partition plate (141).

5. The tail doorframe according to claim 1, characterized in that, The rear door frame (1) further includes a support plate (15), an inner tail end beam panel (16), and an outer tail end beam panel (17). Along the length direction (Y) of the vehicle, the support plate (15) is located between the inner tail end beam panel (16) and the outer tail end beam panel (17). The support plate (15) is provided with a second cavity (151), a fifth flanging (152), and a sixth flanging (153). Along the width direction (X) of the vehicle, the fifth flanging (152) and the sixth flanging (153) are located on both sides of the orifice of the second cavity (151), and the fifth flanging (152) and the sixth flanging (153) are welded to the inner tail end beam panel (16).

6. The tail door frame according to claim 5, characterized in that, Along the length direction (Y) of the vehicle, the orifice of the second cavity (151) is oppositely arranged with the bottom longitudinal beam (2), and the fifth flanging (152) and the sixth flanging (153) can respectively align with two edges of the bottom longitudinal beam (2) along the width direction (X) of the vehicle.

7. The tail doorframe according to claim 5, characterized in that, The support plate (15) is further provided with a seventh flanging (154) and an eighth flanging (155) connected to the inner plate (16) of the rear end beam; Along the width direction (X) of the vehicle, the fifth flanging (152) and the seventh flanging (154) are located on the same side of the second cavity (151), and the sixth flanging (153) and the eighth flanging (155) are located on the other side of the second cavity (151); There is a first corner position (156) between the fifth flanging (152) and the seventh flanging (154), and the first corner position (156) has a first notch (156a); there is a second corner position (157) between the sixth flanging (153) and the eighth flanging (155), and the second corner position (157) has a second notch (157a).

8. The tail door frame according to claim 5, characterized in that, The rear door frame (1) further includes a lower corner plate (19) of the D-pillar; The support plate (15) is provided with a ninth flanging (158), and the ninth flanging (158) is connected to the lower corner plate (19) of the D-pillar.

9. The tail door frame according to claim 5, wherein The support plate (15) and the outer plate (17) of the rear end beam are connected by fixing parts; A groove (159) is provided on one side of the support plate (15) connected to the outer plate (17) of the rear end beam.

10. A vehicle, characterized in that, The vehicle includes: A vehicle body; A rear door frame (1), the rear door frame (1) is installed on the vehicle body, and the rear door frame (1) is the rear door frame (1) according to any one of claims 1 to 9.

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