Lower vehicle body assembly and vehicle

Abstract

According to the lower vehicle body assembly and the vehicle, a threshold assembly is a part of the lower vehicle body assembly, in this way, the extending section, located between a first welding spigot and a second welding spigot, of a threshold body can be fixedly connected with an A-column inner plate, and when the A-column assembly is impacted by a chassis (such as wheels), collision force can be guided to be transmitted to the threshold body, so that the threshold body is prevented from being collided; therefore, the stress borne by the A-column assembly is dispersed, the stress borne by the A-column assembly is improved, deformation of the A-column assembly is reduced, the cracking risk of welding positions of parts in the A-column assembly is reduced, and the safety of the whole vehicle is improved.

Description

Technical Field

[0001] This application relates to the technical field, and in particular to a lower body assembly and a vehicle. Background Technology

[0002] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of the lower body assembly and the side panel assembly after assembly in the prior art.

[0003] Currently, the vehicle includes a door sill and an A-pillar. During the vehicle manufacturing process, the door sill is part of the side panel assembly 10B, and the A-pillar is part of the lower body assembly 10A. After the side panel assembly 10B and the lower body assembly 10A are assembled separately, they are then assembled together. Currently, the component assembly process restricts the connection between the door sill and the A-pillar; that is, there is currently no connection between the door sill and the A-pillar in the complete vehicle. Figure 1 As can be seen from the area enclosed by the dashed line, the door sill and A-pillar are not connected within this area. When the A-pillar receives the impact force F from components such as the wheel (10C), the door sill and A-pillar have relatively weak impact resistance. In a small offset frontal crash, the vehicle body is severely impacted by chassis components, making the inner panel of the A-pillar prone to tearing and instability. This results in chassis structural components intruding into the occupant survival space, failing to meet the requirements for a small offset frontal crash.

[0004] How to improve the stress on the A-pillar and thus enhance the safety of the entire vehicle is a technical problem that urgently needs to be solved by technicians in this field. Utility Model Content

[0005] The purpose of this application is to provide a lower body assembly in which the stress on the A-pillar is optimized, thereby reducing the risk of cracking of components in the A-pillar assembly and improving overall vehicle safety. Another purpose of this application is to provide a vehicle having the aforementioned lower body assembly.

[0006] This application provides a lower body assembly, including the following components:

[0007] A-pillar assembly, including an inner A-pillar panel, the inner A-pillar panel including a first weld stop and a second weld stop, the first weld stop and the second weld stop extending along the length direction of the inner A-pillar panel, the first weld stop and the second weld stop arranged along a first direction;

[0008] A door sill assembly includes a door sill body, the door sill body including an extension section located between a first welded stop and a second welded stop, the extension section being fixedly connected to the inner panel of the A-pillar; the first direction is the length direction of the door sill body.

[0009] The door sill assembly is part of the lower body assembly. This allows the extension of the door sill body located between the first and second welded stops to be fixedly connected to the inner A-pillar panel using connectors. When the A-pillar assembly is impacted by the chassis (such as a wheel), the impact force can be guided to the door sill body, thereby dispersing the force on the A-pillar assembly, improving the stress on the A-pillar assembly, reducing the deformation of the A-pillar assembly, reducing the risk of cracking at the welded positions of the components in the A-pillar assembly, and thus improving the overall vehicle safety.

[0010] In one example, a connector is also included, through which the extension is fixedly connected to the inner A-pillar panel; the inner A-pillar panel includes an inner panel body, and the first weld stop and the second weld stop are respectively located on both sides of the inner panel body extending along its length direction.

[0011] In one example, the extension includes a first surface and a second surface connected by a transition surface, the second surface being higher than the first surface, both the first surface and the second surface extending along the first length direction, the second surface being located on the side of the first surface near the inner panel of the A-pillar, and the connector including a first connector capable of at least fixing the first surface and the inner panel of the A-pillar.

[0012] In one example, the connector further includes a second connector that is fixedly connected to the second surface and the first connector, and the second connector is located between the first connector and the inner plate body.

[0013] In one example, the first connector includes a first segment, a second segment, and a third segment connected together. The first segment is fitted and fixedly connected to the first surface, the second segment is fitted to the transition surface, and the third segment is at least partially fitted to the second surface. The first connector also includes a bent segment, which is connected to the third segment or is simultaneously connected to both the third segment and the second segment. The bent segment is fixedly connected to the sill body.

[0014] In one example, each of the sides is provided with a first bent edge, the end face of the first bent edge away from the inner panel includes a first weld stop or a second weld stop, the A-pillar assembly also includes a support member, the support member is located at least between the two first bent edges, the support member has at least a partial circumferential flange, the flange is welded and fixed to the first bent edge, and / or the flange is fixed to the inner panel, a cavity is formed between the support member and the inner panel, and the first connector is fixedly connected to the support member.

[0015] In one example, the inner panel of the A-pillar further includes a second bent edge that extends along the length of the sill body and is at least partially supported on and fixedly connected to the second surface.

[0016] In one example, a reinforcement is also included, which is located between the two first bends and at least partially on the side of the support away from the sill body.

[0017] In one example, the threshold body has a first end face located between two first bends, and the first end face is not connected to the first bend opposite to it.

[0018] In addition, this application also provides a vehicle including a side panel assembly and a lower body assembly as described in any of the above embodiments.

[0019] The vehicle in this embodiment has the aforementioned lower body assembly, and therefore the vehicle also has the aforementioned technical effects of the lower body assembly. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the lower body assembly and the side outer panel assembly after assembly in the prior art;

[0021] Figure 2 This is a schematic diagram of the structure of a lower body assembly installed on a vehicle body in one embodiment of this application;

[0022] Figure 3 for Figure 2 Schematic diagram of the middle and lower body assembly;

[0023] Figure 4 for Figure 3 A schematic diagram of the structure of the middle sill component;

[0024] Figure 5 for Figure 4 The diagram shows an exploded view of the threshold component.

[0025] Figure 6 for Figure 4 A magnified view of a portion of the threshold component shown;

[0026] Figure 7 for Figure 3 Schematic diagram of the A-pillar assembly;

[0027] Figure 8 for Figure 7 A partial schematic diagram of the A-pillar assembly shown;

[0028] Figure 9 for Figure 3 The diagram shows the force transmission path when the lower body assembly is subjected to force.

[0029] in, Figures 1 to 9 The one-to-one correspondence between the reference numerals and component names in the attached drawings is as follows:

[0030] 10A. Lower body assembly; 10B. Side panel assembly; 10C. Wheels;

[0031] 100. A-pillar assembly; 101. A-pillar inner panel; 1011. Inner panel body; 1012. First bend edge; 1013. Second bend edge; 1014. First weld stop; 1015. Second weld stop; 102. Support member; 1021. Flanged edge; 103. Reinforcing member;

[0032] 200, Sill assembly; 201, Sill body; 2011, First surface; 2012, Second surface; 2013, Transition surface; 201A, First end face; 201B, Extension section; 2014, Connecting hole; 202, First connector; 2021, First segment; 2022, Second segment; 2023, Third segment; 2024, Bending segment; 203, Second connector; 20A, Bolt hole. Detailed Implementation

[0033] Please refer to Figures 2 to 9 , Figure 2 This is a schematic diagram of the structure of a lower body assembly installed on a vehicle body in one embodiment of this application; Figure 3 for Figure 2 Schematic diagram of the middle and lower body assembly; Figure 4 for Figure 3 A schematic diagram of the structure of the middle sill component; Figure 5 for Figure 4 The diagram shows an exploded view of the threshold component. Figure 6 for Figure 4 A magnified view of a portion of the threshold component shown; Figure 7 for Figure 3 Schematic diagram of the A-pillar assembly; Figure 8 for Figure 7 A partial schematic diagram of the A-pillar assembly shown; Figure 9 for Figure 3 The diagram shows the force transmission path when the lower body assembly is subjected to forces. Figure 2 The area enclosed by the dashed line is the area where reinforcements, supports, and connectors are installed; Figure 4 The area enclosed by the dashed line is the location of the first connector on the threshold body; Figure 6 The area marked by the dashed line P is the welding and fixing area for the first and second connectors. Figure 5 The area enclosed by the dashed line is the connection area between the first connector and the sill body. Figure 9 The dashed line Z indicates the direction of force transmission.

[0034] This application provides a vehicle, including a body, wheels, and a braking system, etc. The body includes a lower body assembly 10A and a side panel assembly. In this application embodiment, the lower body assembly 10A includes an A-pillar assembly 100 and a sill assembly 200. The A-pillar assembly 100 includes at least an outer A-pillar panel (not shown in the drawings) and an inner A-pillar panel 101. The inner A-pillar panel 101 includes a first weld stop 1014 and a second weld stop 1015, both extending along the length direction of the inner A-pillar panel 101 and arranged along a first direction. The first weld stop 1014 and the second weld stop 1015 are used for welding and fixing to the outer A-pillar panel. The outer A-pillar panel and the inner A-pillar panel 101 can be fixed into an integral structure by welding, and the outer A-pillar panel and the inner A-pillar panel 101 can form an integral structure with a cavity.

[0035] In this embodiment, the door sill assembly 200 includes a door sill body 201, which can be an aluminum alloy profile, or other materials. The door sill body 201 includes an extension 201B located between the first welded stop 1014 and the second welded stop 1015. The extension 201B is fixedly connected to the A-pillar inner panel 101, for example, by bolting, welding, flow drill screws (FDS), or self-piercing riveting (SPR). In this embodiment, the lower body assembly also includes a connector. The door sill body 201 is fixedly connected to the A-pillar inner panel 101 via the connector, making the connection convenient. The connector can be a bolt connection, or it can be connected by welding, flow drill screws (FDS), or self-piercing riveting (SPR).

[0036] As described above, the sill assembly 200 is part of the lower body assembly 10A. The extension 201B of the sill body 201 located between the first welded stop 1014 and the second welded stop 1015 is fixedly connected to the inner A-pillar panel 101. When the A-pillar assembly 100 receives an impact from the chassis (such as a wheel), it can guide the collision force to the sill body 201, thereby dispersing the force on the A-pillar assembly 100, improving the stress on the A-pillar assembly 100, reducing the deformation of the A-pillar assembly 100, reducing the risk of cracking at the welding positions of the components in the A-pillar assembly 100, and thus improving the overall vehicle safety.

[0037] The structure of the sill body 201 can be the same as that of the current technology, but it may not be exactly the same. In one example, the sill body 201 includes a first surface 2011 and a second surface 2012 connected by a transition surface 2013. The second surface 2012 is higher than the first surface 2011. Both the first surface 2011 and the second surface 2012 extend along the length of the sill body 201. The second surface 2012 is located on the side of the first surface 2011 near the A-pillar inner panel 101. The connector includes a first connector 202, which can at least fix the first surface 2011 and the A-pillar inner panel 101. The first connector 202 can be bolted to the first surface 2011 and the A-pillar inner panel 101. For example, bolt holes 20A can be provided on the first connector 202 for installing bolts. Of course, the first connector 202 can also be fixed to the first surface 2011 and the A-pillar inner panel 101 by welding or other means.

[0038] In this embodiment, the distance between the inner A-pillar panel 101 and the first surface 2011 can be relatively far, and the space for the first connector 202 can be relatively large. For example, the first connector 202 can be inclined, so that the strength of the first connector 202 is relatively high.

[0039] In this embodiment, the first connector 202 can be completely fitted to the first surface 2011, improving the support strength. A portion of the first connector 202 can form a cavity with the inner A-pillar panel 101, enhancing the strength of the first connector 202.

[0040] As described above, the sill body 201 is fixedly connected to the A-pillar inner panel 101 via a connector. Specifically, the A-pillar inner panel 101 includes an inner panel body 1011, with two sides extending vertically from the inner panel body 1011. A first weld stop 1014 and a second weld stop 1015 are located on the two sides respectively. In one embodiment, each side has a first bent edge 1012, and the first weld stop 1014 or the second weld stop 1015 is disposed on the end face of the first bent section 1012 away from the inner panel body 1011. The first bent edge 1012 extends toward the sill body 201, and the connector is located between the two first bent edges 1012. Specifically, the first connector 202 is located between the two first bent edges 1012. In this embodiment, the two first bending edges 1012 improve the strength of the inner plate to a certain extent. The first connector 202 can be fixed to the inner plate, or it can be fixed to both the inner plate 1011 and the first bending edge 1012 at the same time, so the connection strength is relatively high.

[0041] The first connector 202 can be a component with multiple bending segments 2024, thus the first connector 202 has high strength.

[0042] In this embodiment, the connector further includes a second connector 203, which is fixedly connected to the second surface 2012 and the first connector 202. The second connector 203 is located between the first connector 202 and the inner plate 1011. The second connector 203 can be fixed to the second surface 2012 by bolts, welding, or riveting, and the first connector 202 and the second connector 203 can also be fixedly connected by bolts, welding, or riveting.

[0043] In this way, the impact force transmitted from the A-pillar assembly 100 can be transmitted to the sill body 201 simultaneously from the first connector 202 and the second connector 203. The force is relatively dispersed, which minimizes the local stress on the sill body 201. Furthermore, the connection strength between the sill body 201 and the inner panel is relatively high.

[0044] In this embodiment of the application, the first connector 202 includes a first segment 2021, a second segment 2022, and a third segment 2023 connected together. The first segment 2021 is attached to and fixedly connected to the first surface 2011, the second segment 2022 is attached to the transition surface 2013, and the third segment 2023 is at least partially attached to the second surface 2012. That is to say, the first connector 202 can be supported on the sill body 201 through the first segment 2021, the second segment 2022, and the third segment 2023. In this way, the contact surface between the first connector 202 and the sill body 201 is relatively large, and the force between the two is more uniform.

[0045] Furthermore, the first connector 202 also includes a bent section 2024, which is connected to the third section 2023, or simultaneously connected to both the third section 2023 and the second section 2022. The bent section 2024 is fixedly connected to the sill body 201. The accompanying drawings illustrate an embodiment where the bent section 2024 is simultaneously connected to both the third section 2023 and the second section 2022. The bent section 2024 can also improve the strength of the first connector 202 to some extent. The bent section 2024 can form a cavity structure with the inner plate 1011, further enhancing the strength of the first connector 202 and the inner plate 1011 after fixation.

[0046] In this embodiment of the application, the A-pillar assembly 100 further includes a support member 102, which is located at least between the two first bending edges 1012. The support member 102 has at least a partial circumferential flange 1021, which is welded and fixed to the first bending edges 1012, or / and the flange 1021 is fixed to the A-pillar inner panel 101 located between the two first bending edges 1012. A cavity is formed between the support member 102 and the inner panel 1011, and the first connector 202 is fixedly connected to the support member 102.

[0047] In this embodiment, a support member 102 is further added to the inner panel 1011. The support member 102 is welded to the inner panel 1011 or the first bent edge 1012 through flanges provided around its perimeter, or is fixed by other means, which can further increase the strength of the A-pillar assembly 100. This can further improve the X-direction and Y-direction collision bearing capacity of the A-pillar assembly 100.

[0048] In this embodiment, the A-pillar inner panel 101 further includes a second bent edge 1013, which extends along the length of the sill body 201. The second bent edge 1013 is at least partially supported and fixedly connected to the second surface 2012. The second bent edge 1013 can be bolted, welded, or riveted to the second surface 2012. This improves the fixing reliability of the A-pillar inner panel 101.

[0049] In this embodiment, the lower body assembly further includes a reinforcing member 103, which is located between the two first bent edges 1012 and at least partially on the side of the support member 102 away from the sill body 201. The reinforcing member 103 can be plate-shaped, or it can be a structure with a flange, which is welded or bolted to the inner A-pillar panel 101. The reinforcing member 103 can increase the overall strength of the inner A-pillar panel 101.

[0050] In this embodiment, the inner A-pillar panel 101 has a welded stop. In this embodiment, the sill body 201 has a first end face 201A, which is located between two first bending edges 1012. The side of the inner A-pillar panel away from the first end face 201A is not connected to the connector. This can interrupt the transmission of the impact force to the first welded stop 1014 of the inner A-pillar panel 101, increase the transmission of the impact force to the sill body 201, and reduce the stress after welding to the first welded stop 1014 of the inner A-pillar panel 101. This can effectively prevent the welded stop at the rear end of the A-pillar from cracking, thereby reducing the direction of weld cracking.

[0051] Of course, the A-pillar outer panel can also be connected to the door sill. Please refer to this again. Figure 3 , Figure 3 The diagram shows that the extension 201B of the sill body also has a connection hole 2014 for connecting to the A main outer panel. Thus, the extension 201B of the A sill body provided in this embodiment can be connected to both the inner and outer A-pillar panels simultaneously, which helps to optimize the impact force received by the A-pillar assembly. Although the outer A-pillar panel is not disclosed in this application, this does not hinder those skilled in the art from understanding and implementing the technical solutions described in this application.

[0052] The vehicle in this application embodiment includes a side panel assembly and a lower body assembly of any of the above embodiments.

[0053] The vehicle in this embodiment has the aforementioned lower body assembly, and therefore the vehicle also has the aforementioned technical effects of the lower body assembly.

[0054] For other aspects of the vehicle's structure, please refer to current technology; this application will not elaborate further.

[0055] In the description of embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0056] In the embodiments of this application, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0057] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A lower car body assembly, characterized by, The application relates to an automobile door sill assembly. The application relates to an automobile door sill assembly. The application relates to an automobile door sill assembly.

2. The lower carbody assembly of claim 1, wherein, The application relates to an automobile door sill assembly.

3. The lower carbody assembly of claim 2, wherein, The application relates to an automobile door sill assembly.

4. The lower carbody assembly of claim 3, wherein, The application relates to an automobile door sill assembly.

5. The lower carbody assembly of claim 3, wherein, The application relates to an automobile door sill assembly. The application relates to an automobile door sill assembly. The application relates to an automobile door sill assembly. The application relates to an automobile door sill assembly. The application relates to an automobile door sill assembly. The application relates to an automobile door sill assembly. The application relates to an automobile door sill assembly. The application relates to an automobile door sill assembly. The application relates to an automobile door sill assembly. The application relates to an automobile door sill assembly. The application relates to an automobile door sill assembly. The application relates to an automobile door sill assembly. The application relates to an automobile door sill assembly. The application relates to an automobile door sill assembly. The application relates to an automobile door sill assembly. 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The lower car body assembly of claim 3, wherein, Each of the side portions is provided with a first bent edge (1012) including the first welding stop (1014) or the second welding stop (1015) away from the end face of the inner plate body (1011), the A-pillar assembly (100) further comprises a support (102) located between at least two of the first bent edges (1012), the support (102) has a flange (1021) at least partially circumferentially, the flange (1021) is welded with the first bent edge (1012) or / and the flange (1021) is fixed with the inner plate body (1011), a cavity is further formed between the support (102) and the inner plate body (1011), and the first connecting member (202) is fixedly connected with the support (102).

7. The lower carbody assembly of claim 6, wherein, The A-pillar inner plate (101) further comprises a second bent edge (1013) extending along the length direction of the rocker body (201), and the second bent edge (1013) is at least partially supported on and fixedly connected with the second surface (2012).

8. The lower carbody assembly of claim 6, wherein, The A-pillar inner plate (101) further comprises a second bent edge (1013) extending along the length direction of the rocker body (201), and the second bent edge (1013) is at least partially supported on and fixedly connected with the second surface (2012).

9. The lower carbody assembly of any one of claims 2 to 8, wherein, The extension section (201B) comprises a first end face (201A), and the side portion of the A-pillar inner plate (101) away from the first end face (201A) is not connected with the connecting member.

10. A vehicle characterized by comprising: The side wall outer plate assembly and the lower vehicle body assembly of any one of claims 1 to 9 are included.

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