Vehicle and vehicle body structure thereof

Abstract

The vehicle body structure comprises a D column main body, a first connecting part, a second connecting part and a back door hinge plate, the D column main body extends in the Z-axis direction of the vehicle body structure and is provided with an upper connecting end, the first connecting part is connected with the upper connecting end, the first connecting part extends in the Z-axis direction of the vehicle body structure, and the second connecting part is connected with the back door hinge plate. A first inner cavity is formed; one end of the second connecting part is connected with the end, away from the upper connecting end, of the first connecting part, the second connecting part extends in the Y-axis direction of the vehicle body structure, and a second inner cavity communicated with the first inner cavity is formed in the second connecting part; the back door hinge plate is installed in the second inner cavity, the two ends of the back door hinge plate are connected with the cavity wall of the second inner cavity, and the two ends of the back door hinge plate are distributed in the X-axis direction of the vehicle body structure. The torsion resistance of the vehicle body structure is improved mainly by improving the connection between the D column in the vehicle body structure and other parts of the vehicle body structure.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a vehicle and a vehicle body structure thereof. Background Art

[0002] The vehicle may turn or change direction during driving, so the vehicle frame must have sufficient torsion resistance to prevent the vehicle body from deforming. Among existing models, compared with sedans or small SUVs, the torsional stiffness of the entire body of models with long wheelbases and larger vehicle sizes (such as MPVs, large SUVs or vans, etc.) will be greatly reduced, which will cause the torsional mode of the body to decrease. The decrease in the torsional mode of the body will not only affect the handling stability and safety of the vehicle, but also cause the vehicle to produce structural resonance during driving, causing abnormal noise in the body structure, and then affect the NVH performance of the body (NVH is the abbreviation of noise, vibration and comfort), affecting the driving comfort of passengers in the vehicle.

[0003] In order to optimize and improve the NVH performance of these vehicles, a common practice is to optimize the cross-sectional dimensions of the vehicle body. However, the demand for vehicles has changed in recent years, especially for new energy vehicles, which pursue shorter front and rear suspensions, larger interior space and trunk space, and lighter bodies. The cross-sectional dimensions of some key areas that affect the NVH performance of the vehicle body are not only difficult to increase, but are also constantly being compressed, making it difficult to optimize the cross-sectional dimensions of the vehicle body.

[0004] With the continuous development and progress of vehicle technology, the requirements for the NVH performance of the vehicle body are getting higher and higher. How to further improve the NVH performance of the vehicle body has become an urgent problem that needs to be solved. Utility Model Content

[0005] In view of this, the present application provides a vehicle and a body structure thereof, which solves the above-mentioned technical problems by improving the connection between the D-pillar in the body structure and other parts of the body structure to enhance the torsional resistance of the body structure.

[0006] A first aspect of an embodiment of the present application provides a vehicle body structure, including a D-pillar body, a first connecting portion, a second connecting portion and a tailgate hinge plate, wherein the D-pillar body extends along the Z-axis direction of the vehicle body structure and is provided with an upper connecting end, the first connecting portion is connected to the upper connecting end, the first connecting portion extends along the Z-axis direction of the vehicle body structure and forms a first inner cavity; one end of the second connecting portion is connected to an end of the first connecting portion away from the upper connecting end, the second connecting portion extends along the Y-axis direction of the vehicle body structure and forms a second inner cavity that penetrates the first inner cavity; the tailgate hinge plate is installed in the second inner cavity, the two ends of the tailgate hinge plate are connected to the cavity wall of the second inner cavity, and the two ends of the tailgate hinge plate are distributed along the X-axis direction of the vehicle body structure.

[0007] Compared with the existing body structure, the body structure in the present application further adds a tailgate hinge plate in its second inner cavity. When the vehicle body undergoes torsional deformation, the tailgate hinge plate has its two ends connected to the cavity wall of the second inner cavity. Therefore, the tailgate hinge plate improves the overall strength of the second connection part, and the tailgate hinge plate also forms a certain restraining effect in the second inner cavity, thereby improving the torsional strength of the second connection part, making the upper connection part have higher torsional strength, and further improving the NHV performance of the body structure.

[0008] In some embodiments of the first aspect, the second connecting portion includes a first enclosing portion and a second enclosing portion, the first enclosing portion is connected to the second enclosing portion to limit a second inner cavity; the first enclosing portion is provided with a first connecting flange, and the second enclosing portion is provided with a second connecting flange, and the two ends of the tailgate hinge plate are respectively clamped between a first connecting flange and a second connecting flange, thereby further improving the torsional strength of the second connecting portion and improving the NHV performance of the vehicle body structure.

[0009] In some embodiments of the first aspect, the middle portion of the tailgate hinge plate is separated from the wall of the second inner cavity. The middle portion of the tailgate hinge plate and the wall of the second inner cavity can disperse the force transmission path to avoid local stress concentration, thereby improving the torsional strength of the second connection portion and improving the NHV performance of the vehicle body structure.

[0010] In some embodiments of the first aspect, the first connecting portion includes a third enclosing portion and a fourth enclosing portion, and the third enclosing portion is connected to the fourth enclosing portion to limit the first inner cavity; wherein the first enclosing portion and the third enclosing portion are integrally formed, and the second enclosing portion and the fourth enclosing portion are integrally formed, thereby improving the connection strength between the first connecting portion and the second connecting portion, that is, improving the overall strength of the upper connecting portion, and thereby, the vehicle body structure has higher structural stability, that is, improving the NHV performance of the vehicle body structure.

[0011] In some embodiments of the first aspect, the D-pillar body is also provided with a lower connecting end arranged opposite to the upper connecting end, and the vehicle body structure also includes a third connecting portion, a fourth connecting portion and a reinforced outer panel, wherein the third connecting portion is connected to the lower connecting end, the third connecting portion extends along the X-axis direction of the vehicle body structure, and forms a third inner cavity; the fourth connecting portion is connected to the lower connecting end and one end of the third connecting portion, the fourth connecting portion extends along the Y-axis direction of the vehicle body structure, and forms a fourth inner cavity that intersects with the third inner cavity; the reinforced outer panel includes a first reinforcement portion and a second reinforcement portion that are rigidly connected, the first reinforcement portion is connected to the third connecting portion and the fourth connecting portion on opposite sides distributed along the Y-axis direction of the vehicle body structure, and the second reinforcement portion is connected to the D-pillar body and the fourth connecting portion on opposite sides distributed along the Z-axis direction of the vehicle body structure, so that the reinforced outer panel improves the connection strength between the third connecting portion, the fourth connecting portion and the lower connecting end of the D-pillar body, thereby improving the NHV performance of the vehicle body structure.

[0012] In some embodiments of the first aspect, the first reinforcement portion and the second reinforcement portion are integrally formed, so that the outer reinforcement plate has higher rigidity, further improving the connection strength between the lower connecting portion and the D-pillar body, thereby improving the overall structural stability of the vehicle body structure.

[0013] In some embodiments of the first aspect, the first reinforcement portion includes a first reinforcement surface extending along the Y-axis direction of the vehicle body structure, a second reinforcement surface extending along the X-axis direction of the vehicle body structure, and a first reinforcement rib, wherein the opposite ends of the first reinforcement rib are respectively connected to the first reinforcement surface and the second reinforcement surface, and the first reinforcement rib enables the first reinforcement portion to have higher structural stability and higher resistance to deformation, thereby improving the overall structural stability of the vehicle body structure.

[0014] In some embodiments of the first aspect, the middle portion of the first reinforcing rib is protruded along the Z-axis direction of the vehicle body structure, thereby enhancing the reinforcing effect of the reinforced outer panel and further enhancing the connection strength between the lower connecting portion and the D-pillar body.

[0015] In some embodiments of the first aspect, the second reinforcement portion includes a third reinforcement surface extending along the Z-axis direction of the vehicle body structure, a fourth reinforcement surface extending along the X-axis direction of the vehicle body structure, and a second reinforcement rib, and the opposite ends of the second reinforcement rib are respectively connected to the third reinforcement surface and the fourth reinforcement surface, so that the vehicle body structure has higher torsional resistance.

[0016] In some embodiments of the first aspect, the middle portion of the second reinforcing rib is protruded along the Z-axis direction of the vehicle body structure, thereby enhancing the reinforcing effect of the reinforced outer panel and further enhancing the connection strength between the lower connecting portion and the D-pillar body.

[0017] In some embodiments of the first aspect, the vehicle body structure also includes a reinforced inner panel, which includes a rigidly connected third reinforcement portion and a fourth reinforcement portion, the third reinforcement portion is located in the third inner cavity, and the fourth reinforcement portion is located in the fourth inner cavity; the third connection portion and the fourth connection portion are provided with through holes for connecting the first reinforcement portion to the third reinforcement portion and the second reinforcement portion to the fourth reinforcement portion, thereby further improving the structural strength of the third connection portion and the fourth connection portion, that is, improving the connection strength between the lower connection portion and the D-pillar body.

[0018] In some embodiments of the first aspect, the third reinforcement portion and the fourth reinforcement portion are integrally formed, thereby improving the rigidity of the reinforced inner panel and further improving the connection strength of the reinforced inner panel.

[0019] A second aspect of an embodiment of the present application provides a vehicle, which includes the body structure in the aforementioned embodiment. For the beneficial effects of the second aspect of the embodiment of the present application, please refer to the beneficial effects of the first aspect of the present application, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the overall structure of the D-pillar and its related structures in the vehicle body structure of this application at a first perspective;

[0022] Figure 2 for Figure 1 A schematic diagram of the structure of the connecting end on the middle D-pillar at a second viewing angle;

[0023] Figure 3 for Figure 2 The cross-sectional view of the AA section;

[0024] Figure 4 for Figure 1 An exploded view of the middle and upper connecting part from a third-person perspective;

[0025] Figure 5 for Figure 1 A schematic diagram of the structure of the lower connecting end of the middle D-pillar at a fourth viewing angle;

[0026] Figure 6 for Figure 5 A cross-sectional view of the middle BB;

[0027] Figure 7 for Figure 1 A schematic diagram of the structure of the lower connecting end of the middle D-pillar at the first viewing angle;

[0028] Figure 8 for Figure 7 A cross-sectional view of the CC section;

[0029] Fig. 9 for Figure 7 A cross-sectional view of the DD section;

[0030] Fig.10 for Figure 1 An exploded view of the middle and lower connecting part from the fifth perspective;

[0031] Fig.11 for Fig.10 Illustration of the structure of the middle reinforced inner plate;

[0032] Fig.12 for Fig.10 Illustration of the structure of the middle reinforced outer plate;

[0033] Fig.13 for Figure 7 The first force analysis diagram of the reinforced outer plate under the stress state;

[0034] Fig.14 for Figure 7 The second force analysis diagram of the reinforced outer plate under stress state.

[0035] Description of Figure Numbers:

[0036] 1-D column body, 10-upper connection end, 100-upper connection part, 11-lower connection end, 110-lower connection part, 2-first connection part, 20-first inner cavity, 21-third enclosure part, 22-fourth enclosure part, 23-window frame side beam, 24-side beam connection part, 3-second connection part, 30-second inner cavity, 31-first enclosure part, 311-first connection flange, 312-connection through hole, 313-first tool through hole, 314-second tool through hole, 32-second enclosure part, 321-second connection flange, 322-through hole, 4-back door hinge plate, 40-hinge plate connection end, 5-third connection part, 50-third inner cavity Cavity, 51-rear longitudinal main beam, 52-rear longitudinal beam cover plate, 53-longitudinal beam end plate, 6-fourth connecting part, 60-fourth inner cavity, 61-first enclosure, 62-second enclosure, 7-reinforced outer plate, 70-first reinforcement part, 701-first reinforcement surface, 702-second reinforcement surface, 703-first reinforcement rib, 71-second reinforcement part, 711-third reinforcement surface, 712-fourth reinforcement surface, 713-second reinforcement rib, 72-connecting screw hole, 8-reinforced inner plate, 81-third reinforcement part, 82-fourth reinforcement part, 83-through hole, 84-serrated connecting part, 85-fifth reinforcement part, 86-sixth reinforcement part, 9-connecting piece. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application is clearly and completely described below in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiments are only embodiments of a part of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of this application.

[0038] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meaning as understood by a person of ordinary skill in the field to which this application belongs. The words "one", "an" or "the" and the like used in this application do not indicate a quantitative limitation, but are only used to indicate the presence of at least one. The words "include" or "comprise" and the like mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. The words "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0039] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0040] The following will be combined with the attached examples of the present application Figure 1-Figure 13 , the technical solutions in the embodiments of the present application and the prior art embodiments related to the present application are described clearly and completely, wherein the direction coordinates indicated in some drawings are indicated correspondingly to each other, and the direction coordinates schematically indicate the viewing angles of the products in the present application to assist and facilitate readers to understand the structural features of the products.

[0041] It should be noted that the directions of the three axes X, Y, and Z indicated in the multiple drawings are consistent with each other. Figure 1 For example, Figure 1 The Z-axis refers to the height direction of the vehicle body structure, the X-axis refers to the width direction of the vehicle body structure, and the Y-axis refers to the length direction of the vehicle body structure.

[0042] It should be noted that the X, Y, and Z axes in the diagram only represent the approximate extension direction of the structure, and the actual extension direction of the structure does not need to completely coincide with the axis in the diagram. That is, as long as the actual extension direction of the structure has a tendency to extend along the axis in the diagram, the structure can be considered to extend along the axis. The actual extension direction of the structure and the axis in the diagram can have a certain angle deviation. As long as the angle deviation is within a certain range, the structure can be considered to extend along the axis. Figure 1 In the figure, it can be considered that the Z-axis direction shown in the figure is also the height direction of the D-pillar body 1, the X-axis direction is also the width direction of the D-pillar body 1, and the Y-axis direction is also the length direction of the D-pillar body 1. In reality, the structural directions of the D-pillar body 1 and the vehicle body structure form a certain angle. Similarly, the structural directions of the D-pillar body 1 and the vehicle body structure can both form a certain angle with the axial direction shown in the figure.

[0043] Please refer to Figures 1 to 4 The present application provides a vehicle body structure, including a D-pillar body 1, an upper connecting portion 100 and a back door hinge plate 4, wherein the upper connecting portion 100 includes a first connecting portion 2 and a second connecting portion 3, the first connecting portion 2 and the second connecting portion 3 are two local structures divided according to different extension directions of their internal cavities; the D-pillar body 1 extends along the Z-axis direction of the vehicle body structure, and the D-pillar body 1 is provided with an upper connecting end 10 and a lower connecting end 11, the first connecting portion 2 extends along the Z-axis direction of the vehicle body structure, and forms a first inner cavity 20, the second inner cavity 20 is formed, and the first inner cavity 20 is formed. A connecting portion 2 is connected to the upper connecting end 10; a second connecting portion 3 extends along the Y-axis direction of the vehicle body structure, one end of the second connecting portion 3 is connected to an end of the first connecting portion 2 away from the upper connecting end 10, and a second inner cavity 30 that penetrates the first inner cavity 20 is formed in the second connecting portion 3; a tailgate hinge plate 4 is installed in the second inner cavity 30, both ends of the tailgate hinge plate 4 are connected to the cavity wall of the second inner cavity 30, and both ends of the tailgate hinge plate 4 (i.e., the hinge plate connecting ends 40 shown in the figure) are distributed along the X-axis direction of the vehicle body structure.

[0044] Compared with the existing body structure, the body structure in the present application further adds a tailgate hinge plate 4 in its second inner cavity 30. When the vehicle body undergoes torsional deformation, the tailgate hinge plate 4 is connected to the cavity wall of the second inner cavity 30 at both ends (i.e., the hinge plate connecting ends 40 shown in the figure). Therefore, the tailgate hinge plate 4 improves the overall strength of the second connection part 3, and the tailgate hinge plate 4 also forms a certain restraining effect in the second inner cavity 30, thereby improving the torsional strength of the second connection part 3, so that the upper connection part 100 has higher torsional strength, and further improves the NHV performance of the body structure (NVH is the abbreviation of noise (Noise), vibration (Vibration) and comfort (Harshness), NVH performance is one of the important indicators for measuring vehicle ride comfort and overall quality, which directly affects the experience of the driver and passengers).

[0045] It should be noted that the tailgate hinge plate 4 is a connector 9 used to connect the tailgate of the vehicle to the D-pillar. In the present application, the tailgate hinge plate 4 is moved into the second cavity in the vehicle body structure. In this way, the connection between the tailgate of the vehicle and the vehicle body structure is more compact, which makes the vehicle body structure more compact to a certain extent, thereby improving the NHV performance of the vehicle body structure.

[0046] Please refer to Figure 3 and Figure 4 In some embodiments, the second connection portion 3 includes a first enclosure portion 31 and a second enclosure portion 32, the first enclosure portion 31 is connected to the second enclosure portion 32 to limit the second inner cavity 30; the first enclosure portion 31 is provided with a first connection flange 311, and the second enclosure portion 32 is provided with a second connection flange 321, and the two ends of the tailgate hinge plate 4 (i.e., the hinge plate connection end 40 shown in the figure) are respectively clamped between a first connection flange 311 and a second connection flange 321, so that at the edge of the second connection portion 3, the first enclosure portion 31, the tailgate hinge plate 4 and the second enclosure portion 32 are connected in sequence, thereby increasing the connection area between the tailgate hinge plate 4 and the second connection portion 3, thereby improving the overall connection strength of the second connection portion 3, that is, further improving the torsional strength of the second connection portion 3, and improving the NHV performance of the vehicle body structure.

[0047] Please refer to the following for further reference Figure 2 and Figure 3In the embodiment of this part, the middle part of the back door hinge plate 4 is connected to the first enclosure part 31, and the two ends of the back door hinge plate 4 are overlapped with the first connecting flange 311 and the second connecting flange 321. In order to ensure the stable connection between the back door hinge plate 4 and the second connecting part 3, the first enclosure part 31 correspondingly opens a connecting through hole 312 for the connecting member 9 to pass through. The connecting member 9 enters the second inner cavity 30 through the connecting through hole 312 to connect the back door hinge plate 4 and the first enclosure part 31. Because the back door hinge plate 4 needs to be connected to the back door of the vehicle, in order to meet the installation of the back door hinge of the vehicle, it is also possible to adjust the gap surface difference between the back door and the vehicle body structure, so as to connect the back door. The connecting parts 9 between the door hinge plate 4 and the first enclosure 31 are matching screws and bolts, wherein the bolts need to be exposed in the first enclosure 31 to facilitate later operations to adjust the gap surface difference between the tailgate and the vehicle body structure, so the screws need to be inserted into the connecting through holes 312 along the positive direction of the Z axis shown in the figure to cooperate with the connecting bolts. When the screws and bolts are connected, the heads of the screws are located in the second inner cavity 30. Accordingly, the second enclosure 32 needs to be provided with a first tool through hole 313 to allow the screws and tools to pass through and enter the second inner cavity 30. The tools are used to operate the screws so that the screws cooperate with the bolts to complete the connection between the tailgate hinge plate 4 and the first enclosure 31.

[0048] In addition, since certain spot welding connections need to be made between the first enclosure 31 and the second enclosure 32, as well as between the tailgate hinge plate 4 and the first enclosure 31, in order to ensure the stability of the connection therebetween, the second enclosure 32 is correspondingly provided with a second tool through hole 314 for the spot welding tool to penetrate into the second inner cavity 30 for spot welding operations; since the rear seats of the vehicle need to be equipped with seat belts, in order to meet the layout and installation requirements of the rear seat seat belt reels, the second enclosure 32 is correspondingly provided with a through hole 322 for the insertion of the seat belts.

[0049] It should also be noted that reference Figure 4 The second enclosed portion 32 in the back door hinge plate 4 is limited by the installation position of the back door hinge plate 4 and the welding point of the second connecting portion 3. The first tool through hole 313, the second tool through hole 314 and the through hole 322 are located in the middle area of ​​the upper connecting cavity, which weakens the torsional rigidity of the upper connecting portion 100 to a certain extent. The installation position and installation method of the back door hinge plate 4 can improve the torsional resistance of the first tool through hole 313 and the second tool through hole 314. Please refer to Figure 3 The second enclosed portion 32 is connected to the rear door hinge plate 4 at the periphery of the connecting hole 312 opposite to the first tool hole 313, so that the connection strength of the periphery of the connecting hole 312 is improved, and the rear door hinge plate 4 is connected to the rear door hinge plate 4 along the Figure 4The two side portions distributed in the Y-axis direction are welded to the second connecting portion 3, and one of the side portions is connected to the surface of the second enclosure portion 32 in the opening area, thereby improving the connection strength of the opening area, thereby improving the torsional strength of the second connecting portion 3.

[0050] Please continue to refer to Figure 3 In some embodiments, the middle portion of the tailgate hinge plate 4 is separated from the wall of the second inner cavity 30. In this way, the tailgate hinge plate 4 divides the cavity portion of the second inner cavity 30 related to the first enclosure 31 and the second enclosure 32 into two relatively independent spaces. In this way, when force is transmitted to this portion, the force can be dispersed and transmitted along the tailgate hinge plate 4, the first enclosure 31 and the second enclosure 32. Compared with the tailgate hinge plate 4 being attached to the first enclosure 31 or the second enclosure 32, the middle portion of the tailgate hinge plate 4 is separated from the wall of the second inner cavity 30, which can disperse the force transmission path to avoid local stress concentration, thereby improving the torsional strength of the second connecting portion 3 and improving the NHV performance of the vehicle body structure.

[0051] Please refer to Figure 2 and Figure 4 In some embodiments, the first connecting portion 2 includes a third enclosing portion 21 and a fourth enclosing portion 22, and the third enclosing portion 21 is connected to the fourth enclosing portion 22 to limit the first inner cavity 20; wherein the first enclosing portion 31 and the third enclosing portion 21 are integrally formed, and the second enclosing portion 32 and the fourth enclosing portion 22 are integrally formed, thereby improving the connection strength between the first connecting portion 2 and the second connecting portion 3, that is, improving the overall strength of the upper connecting portion 100, and thereby, the vehicle body structure has higher structural stability, that is, improving the torsional strength of the vehicle body structure, so that the vehicle body structure has higher NHV performance.

[0052] exist Figure 4 In the embodiment shown, the upper connecting portion 100 also needs to be connected to the window frame side beam 23, so the upper connecting portion 100 is correspondingly provided with a side beam connecting portion 24 to connect the window frame side beam 23, and together with the window frame side beam 23, a new cavity space is restricted, and the cavity space is connected to the first inner cavity 20 and the second inner cavity 30, so that the inner cavity of the upper connecting portion 100 is three-way connected. In this way, while ensuring the connection relationship between the upper connecting portion 100 and other parts of the vehicle body structure, it is also possible to reduce the dead weight of the vehicle body structure, thereby reducing the deformation of the upper connecting portion 100 due to stress concentration to a certain extent.

[0053] Please refer to Figure 1 , Figure 5 and Figure 7In some embodiments, the D-pillar body 1 is further provided with a lower connection end 11 arranged opposite to the upper connection end 10, and the vehicle body structure further includes a lower connection portion 110 and a reinforcing outer panel 7, wherein the lower connection portion 110 includes a third connection portion 5 and a fourth connection portion 6, and the third connection portion 5 and the fourth connection portion 6 are two local structures divided according to different extension directions of their internal cavities; the third connection portion 5 is connected to the lower connection end 11, and the third connection portion 5 extends along the X-axis direction of the vehicle body structure and forms a third inner cavity 50; the fourth connection portion 6 is connected to the lower connection end 11 and one end of the third connection portion 5, and the fourth connection 6 is along the Y-axis direction of the vehicle body structure direction, and forms a fourth inner cavity 60 that is interconnected with the third inner cavity 50; the reinforced outer panel 7 includes a first reinforcing portion 70 and a second reinforcing portion 71 that are rigidly connected, the first reinforcing portion 70 being connected to the third connecting portion 5 and the fourth connecting portion 6 on opposite sides distributed along the Y-axis direction of the vehicle body structure, and the second reinforcing portion 71 being connected to the D-pillar body 1 and the fourth connecting portion 6 on opposite sides distributed along the Z-axis direction of the vehicle body structure, so that the reinforced outer panel 7 improves the connection strength between the third connecting portion 5, the fourth connecting portion 6 and the lower connecting end 11 of the D-pillar body 1, thereby improving the structural stability of the vehicle body structure and enabling the vehicle body structure to have higher NHV performance.

[0054] Specifically, in the above-mentioned embodiment, since the first reinforcement portion 70 and the second reinforcement portion 71 of the reinforced outer panel 7 both have a certain rigidity, the first reinforcement portion 70 further reinforces the connection between the third connection portion 5 and the D-pillar body 1, and the second reinforcement portion 71 further reinforces the connection between the fourth connection portion 6 and the D-pillar body 1, thereby improving the connection strength between the lower connection portion 110 and the D-pillar body 1 and improving the overall structural stability of the vehicle body structure.

[0055] Please refer to Figure 6 , Figure 8 , Fig. 9 and Fig.10 In some embodiments, the vehicle body structure also includes a reinforced inner panel 8, which includes a third reinforcement portion 81 and a fourth reinforcement portion 82 that are rigidly connected. The third reinforcement portion 81 is located in the third inner cavity 50, and the fourth reinforcement portion 82 is located in the fourth inner cavity 60; the third connection portion 5 and the fourth connection portion 6 are provided with a through hole 83 for the first reinforcement portion 70 to connect the third reinforcement portion 81, and the second reinforcement portion 71 to connect the fourth reinforcement portion 82, that is, the reinforced inner panel 8 is provided in the inner cavity of the lower connection portion 110 (including the third inner cavity 50 and the fourth inner cavity 60), and the reinforced inner panel 8 and the reinforced outer panel 7 work together on the inner and outer sides of the third inner cavity 50 and the fourth inner cavity 60 to improve the structural strength of the third connection portion 5 and the fourth connection portion 6, and improve the connection strength between the lower connection portion 110 and the D-pillar body 1.

[0056] To facilitate understanding, some drawings will be combined below to further illustrate the beneficial effects of the above embodiments.

[0057] Can be combined with reference Figure 7 and Fig.10 , you need to know first that Fig.10 In the illustrated embodiment, the third connection portion 5 is formed by connecting a rear longitudinal main beam 51 and a rear longitudinal beam cover plate 52, wherein the third connection portion 5 is also provided with a longitudinal beam end plate 53 to provide a connection plane for connecting other components to the third connection portion 5, and to improve the structural strength of the third connection portion 5 in the Z-axis direction of the diagram to a certain extent; the fourth connection portion 6 is formed by connecting a first enclosure plate 61 and a second enclosure plate 62, and at the same time limits a fourth inner cavity 60.

[0058] Please refer to Fig.10 In the embodiment shown in FIG. 1 , it should be noted that the fourth connecting portion 6 includes a first enclosure 61 and a second enclosure 62. Please refer to FIG. Figure 8 , Figure 8 The main display shows the connection relationship between the reinforced inner plate 8, the first reinforcement part 70 of the reinforced outer plate 7 and the fourth connection part 6. Figure 8 It can be seen that the reinforced inner plate 8 and the reinforced outer plate 7 are arranged on opposite sides of the first enclosure 61, and the reinforced inner plate 8, the first enclosure 61 and the reinforced outer plate 7 are connected by a connecting member 9. More specifically, the first reinforcement surface 701, the first enclosure 61 and the reinforced inner plate 8 are connected in sequence. Figure 8 At both ends of the cross section shown, the first enclosure 61, the reinforced inner panel 8 and the second enclosure 62 are connected in sequence, so as to improve the connection strength of the fourth connection portion 6. It should be additionally noted that the connection relationship of the second reinforcement surface 702 is not shown in the figure, and the second reinforcement surface 702 also needs to be connected to the third reinforcement surface 711, so that the first reinforcement portion 70 of the reinforced outer panel 7 is connected to the second reinforcement portion 71.

[0059] Please refer to Fig. 9 The embodiment shown, Fig. 9 The main display shows the connection relationship between the reinforced inner plate 8, the second reinforcement part 71 of the reinforced outer plate 7 and the fourth connection part 6. Fig. 9 It can be seen that the third reinforcement surface 711 is connected to the first enclosure 61, and the third reinforcement surface 711 and the first enclosure 61 are connected by a connecting member 9. The first enclosure 61, the reinforced inner panel 8 and the second enclosure 62 are connected in sequence along the opposite direction of the X-axis shown in the figure. In order to strengthen the connection strength between the first enclosure 61, the reinforced inner panel 8 and the second enclosure 62, the three can be welded together.

[0060] Please refer to Figure 5 , Figure 6 and Figure 7 , please note, Figure 5 Perspective and Figure 7 The perspective is completely opposite. Figure 6 In the cross section shown, Figure 6 In the middle part, the reinforced outer plate 7, the first enclosure plate 61, the reinforced inner plate 8 and the second enclosure plate 62 are connected in sequence, and the three are reinforced by a connecting member 9; Figure 6 On the left side, the longitudinal beam end plate 53 and the second enclosure plate 62 are overlapped, and the second reinforcement surface 702 and the third reinforcement surface 711 are transitionally connected, so that the reinforced outer plate 7 is connected to the first enclosure plate 61, so that the reinforced outer plate 7 is connected to both the third connection part 5 and the fourth connection part 6.

[0061] Please refer to Fig. 9 and Fig.11 The reinforcement inner plate 8 integrates two Z-shaped bracket structures, wherein the third reinforcement portion 81 and the fourth reinforcement portion 82 are welded to the second enclosure plate 62, and the two Z-shaped bracket structures form an internal support function for the fourth connection portion 6 in the fourth inner cavity 60 of the fourth connection portion 6; Figure 6 In the figure, the third reinforcement part 81 forms a three-layer plate structure with the first enclosure 61 and the second enclosure 62 to improve the rigidity of the fourth connection part 6. In the vehicle, the fourth connection part 6 needs to be connected to the vehicle tailgate, thereby increasing the rigidity of the sealing strip installation surface of the vehicle tailgate door opening.

[0062] For further information, please refer to Figure 8 and Fig.11 The serrated connection portion 84 of the reinforced inner panel 8 is connected to the first and second enclosure panels 61, 62 on the surrounding side to form a three-layer plate structure, which increases the connection strength between the reinforced inner panel 8 and the first and second enclosure panels 61, 62. In addition, the serrated setting of the serrated connection portion 84 reduces the dead weight of the reinforced inner panel 8 to a certain extent. At the same time, the serrated design can also improve the quality of multi-layer plate welding and strengthen the connection strength between multiple plates after welding; in addition, the sixth reinforcement portion 86 of the reinforced inner panel 8 forms a three-layer plate structure with the first and second enclosure panels 61, 62, which further increases the connection strength between the reinforced inner panel 8 and the first and second enclosure panels 61, 62.

[0063] Further, please refer to Figure 6 and Fig.11 Furthermore, the fifth reinforcement portion 85 extends in the opposite direction of the Z axis. In addition to overlapping with the first enclosure 61 and the second enclosure 62, it also overlaps with the lower portion of the longitudinal beam end plate 53 to form a four-layer bolt connection, thereby strengthening the strength of the rear longitudinal beam assembly installation point.

[0064] In some embodiments, the third reinforcement portion 81 and the fourth reinforcement portion 82 are integrally formed, thereby improving the rigidity of the reinforced inner panel 8 and further improving the connection strength of the reinforced inner panel 8 .

[0065] Further, please refer to Fig.10 In some embodiments, the first reinforcement portion 70 and the second reinforcement portion 71 are integrally formed, so that the first reinforcement portion 70 and the second reinforcement portion 71 have a higher connection strength, that is, the outer reinforcement plate has a higher rigidity, which further improves the connection strength between the lower connection portion 110 and the D-pillar body 1, thereby improving the overall structural stability of the vehicle body structure.

[0066] Please refer to Fig.12 In some embodiments, the first reinforcement portion 70 includes a first reinforcement surface 701 extending along the Y-axis direction of the vehicle body structure, a second reinforcement surface 702 extending along the X-axis direction of the vehicle body structure, and a first reinforcement rib 703. The opposite ends of the first reinforcement rib 703 are respectively connected to the first reinforcement surface 701 and the second reinforcement surface 702. The first reinforcement rib 703 enables the first reinforcement portion 70 to have higher structural stability and higher resistance to deformation. When the outer reinforcement plate is connected to the D-pillar body 1 and the lower connecting portion 110, the first reinforcement portion 70 can provide a higher support between the third connecting portion 5 and the D-pillar body 1, so that the connection between the lower connecting portion 110 and the D-pillar body 1 is more stable and has a higher torsion resistance, thereby improving the overall structural stability of the vehicle body structure.

[0067] You can continue to refer to Fig.12 In some embodiments, the middle portion of the first reinforcing rib 703 is protruded along the Z-axis direction of the vehicle body structure. In this way, the first reinforcing rib 703 can provide support for the first reinforcing surface 701 and the second reinforcing surface 702 in the three axial directions of X, Y, and Z shown in the figure, thereby enhancing the reinforcing effect of the reinforced outer panel 7, and further enhancing the connection strength between the lower connecting portion 110 and the D-pillar body 1.

[0068] Please refer again Fig.12 In some embodiments, the second reinforcement portion 71 includes a third reinforcement surface 711 extending along the Z-axis direction of the vehicle body structure, a fourth reinforcement surface 712 extending along the X-axis direction of the vehicle body structure, and a second reinforcement rib 713, and the opposite ends of the second reinforcement rib 713 are respectively connected to the third reinforcement surface 711 and the fourth reinforcement surface 712. In this way, the second reinforcement portion 71 can further enhance the structural strength between the D-pillar body 1 and the fourth connecting portion 6, thereby enhancing the overall structural strength of the vehicle body structure so that the vehicle body structure has higher torsional resistance.

[0069] Furthermore, in some embodiments, the middle portion of the second reinforcing rib 713 is protruded along the Z-axis direction of the vehicle body structure, so that the second reinforcing rib 713 can provide support for the third reinforcing surface 711 and the fourth reinforcing surface 712 in the three axial directions of X, Y, and Z shown in the figure, thereby enhancing the reinforcing effect of the reinforced outer panel 7, and further enhancing the connection strength between the lower connecting portion 110 and the D-pillar body 1.

[0070] In order to facilitate understanding of the effects of the first reinforcing rib 703 and the second reinforcing rib 713, Fig.12 , Fig.13 and Fig.14 , the above-mentioned embodiment is further explained, wherein it needs to be understood that, Fig.13 , Fig.14 The force transmission path analysis of the reinforced outer plate 7 in the embodiment needs to be analyzed in combination with the connection relationship between the reinforced outer plate 7 and the lower connecting portion 110, that is, Fig.13 , Fig.14 For connection relations, please refer to Figure 7 However, since the main analysis is the constraint path formed by the structural characteristics of the reinforced outer plate 7, in order to enable readers to understand the relevant content intuitively and clearly, Fig.13 , Fig.14 Only the reinforced outer plate 7 is drawn separately, and other structures are not drawn.

[0071] Please refer to Fig.12 and Fig.13 When the reinforced outer panel 7 is connected to the lower connecting portion 110 and the D-pillar body 1, due to the structural characteristics of the reinforced outer panel 7 and the setting of the connecting screw hole 72, the force transmission path of the reinforced outer panel 7 is as follows Fig.13 Please refer to Fig.12 and Fig.14 Since the first reinforcing rib 703 and the second reinforcing rib 713 are provided on the reinforcing outer plate 7, and since the convex direction of the first reinforcing rib 703 and the second reinforcing rib 713 is set, the force transmission path formed on the reinforcing outer plate 7 is as follows: Fig.14 As shown, in this way, the reinforced outer panel 7 forms a multi-dimensional and multi-directional force transmission path in the connected state, and the reinforced outer panel 7 can diffuse the force formed between the lower connecting portion 110 and the D-pillar body 1, thereby reducing the stress between the lower connecting portion 110 and the D-pillar body 1; and multiple force transmission paths are intersected to form a multi-dimensional triangular force transmission space, the force transmission space is more stable, and can form a better force transmission effect, so that the connection strength between the lower connecting portion 110 and the D-pillar body 1 is improved, thereby improving the torsional resistance of the vehicle body structure.

[0072] You can continue to refer to Figure 12-14 , 7 connecting screw holes 72 are set on the reinforced outer plate 7, and the connecting screw holes 72 are all set as bar holes to facilitate tolerance adjustment during installation; at the same time, the connecting screw holes 72 are set as a sink structure to prevent the nuts from protruding from the surface of the reinforced outer plate 7 and interfering with the installation of other structures. At the same time, the sink-shaped connecting screw holes 72 can also increase the connection strength of the local installation points and improve the connection strength between the plate structures.

[0073] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0074] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A vehicle body structure, characterized in that: include: A D-pillar body, the D-pillar body extending along the Z-axis direction of the vehicle body structure and having an upper connecting end; a first connection portion, the first connection portion being connected to the upper connection end, the first connection portion extending along the Z-axis direction of the vehicle body structure and forming a first inner cavity; a second connecting portion, one end of which is connected to an end of the first connecting portion away from the upper connecting end, the second connecting portion extending along the Y-axis direction of the vehicle body structure and forming a second inner cavity interpenetrating with the first inner cavity; A back door hinge plate is installed in the second inner cavity, and both ends of the back door hinge plate are connected to the cavity wall of the second inner cavity, and both ends of the back door hinge plate are distributed along the X-axis direction of the vehicle body structure.

2. The vehicle body structure according to claim 1, characterized in that: The second connecting portion includes a first enclosing portion and a second enclosing portion, wherein the first enclosing portion is connected to the second enclosing portion to limit the second inner cavity; The first enclosing portion is provided with a first connecting flange, the second enclosing portion is provided with a second connecting flange, and the two ends of the back door hinge plate are respectively clamped between the first connecting flange and the second connecting flange.

3. The vehicle body structure according to claim 1, characterized in that: The middle portion of the back door hinge plate is spaced from the cavity wall of the second inner cavity.

4. The vehicle body structure according to claim 2, characterized in that: The first connecting portion includes a third enclosing portion and a fourth enclosing portion, wherein the third enclosing portion is connected to the fourth enclosing portion to limit the first inner cavity; wherein the first enclosing portion and the third enclosing portion are integrally formed, and the second enclosing portion and the fourth enclosing portion are integrally formed.

5. The vehicle body structure according to any one of claims 1 to 4, characterized in that: The D-pillar body is further provided with a lower connecting end arranged opposite to the upper connecting end, and the vehicle body structure further comprises: a third connection portion, the third connection portion being connected to the lower connection end, the third connection portion extending along the X-axis direction of the vehicle body structure and forming a third inner cavity; a fourth connection portion, the fourth connection portion being connected to the lower connection end and one end of the third connection portion, the fourth connection portion extending along the Y-axis direction of the vehicle body structure and forming a fourth inner cavity interpenetrating with the third inner cavity; The reinforced outer panel includes a first reinforcement portion and a second reinforcement portion that are rigidly connected, wherein the first reinforcement portion is connected to the third connection portion and the fourth connection portion at two opposite sides along the Y-axis direction of the vehicle body structure, and the second reinforcement portion is connected to the D-pillar body and the fourth connection portion at two opposite sides along the Z-axis direction of the vehicle body structure.

6. The vehicle body structure according to claim 5, characterized in that: The first reinforcement portion and the second reinforcement portion are integrally formed.

7. The vehicle body structure according to claim 5, characterized in that: The first reinforcement portion includes a first reinforcement surface extending along the Y-axis direction of the vehicle body structure, a second reinforcement surface extending along the X-axis direction of the vehicle body structure, and a first reinforcement rib, wherein opposite ends of the first reinforcement rib are respectively connected to the first reinforcement surface and the second reinforcement surface.

8. The vehicle body structure according to claim 7, characterized in that: The middle portion of the first reinforcing rib is protruded along the Z-axis direction of the vehicle body structure.

9. The vehicle body structure according to claim 5, characterized in that: The second reinforcement portion includes a third reinforcement surface extending along the Z-axis direction of the vehicle body structure, a fourth reinforcement surface extending along the X-axis direction of the vehicle body structure, and a second reinforcement rib, wherein opposite ends of the second reinforcement rib are respectively connected to the third reinforcement surface and the fourth reinforcement surface.

10. The vehicle body structure according to claim 9, characterized in that: The middle portion of the second reinforcing rib is protruded along the Z-axis direction of the vehicle body structure.

11. The vehicle body structure according to claim 5, characterized in that: The vehicle body structure further includes a reinforced inner panel, the reinforced inner panel including a third reinforcement portion and a fourth reinforcement portion which are rigidly connected, the third reinforcement portion being located in the third inner cavity, and the fourth reinforcement portion being located in the fourth inner cavity; The third connection part and the fourth connection part are provided with through holes, so that the first reinforcement part can be connected to the third reinforcement part, and the second reinforcement part can be connected to the fourth reinforcement part.

12. The vehicle body structure according to claim 11, characterized in that: The third reinforcement portion and the fourth reinforcement portion are integrally formed.

13. A vehicle, characterized in that: The vehicle comprises a vehicle body structure as claimed in any one of claims 1 to 12.

Images