Reinforcing structure for lower portion of A column

Abstract

The utility model discloses an A pillar lower portion reinforcing structure which comprises a lower portion reinforcing plate, a side wall reinforcing plate, a longitudinal beam outer plate and an A pillar inner plate, the front end of the A pillar inner plate is connected with the front end of the side wall reinforcing plate, the rear end of the longitudinal beam outer plate is connected with the A pillar inner plate, and the side wall reinforcing plate is connected with the longitudinal beam outer plate through the lower portion reinforcing plate. The lower reinforcing plate is at least partially located on the front side of the front end of the A column inner plate and the front side of the front end of the side wall reinforcing plate. According to the A column lower portion reinforcing structure, the side wall reinforcing plate and the longitudinal beam outer plate are connected through the lower portion reinforcing plate, and the lower portion reinforcing plate plays a role in protecting and reinforcing the connecting position between the A column inner plate and the side wall reinforcing plate; when collision occurs, the lower reinforcing plate can transmit collision energy to the longitudinal beam outer plate and the side wall reinforcing plate, so that connection failure between the A column inner plate and the side wall reinforcing plate caused by collision energy concentration is avoided, the structural strength of the A column part is improved, and vehicle structures such as a passenger compartment and a battery module are better protected.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, and particularly relates to a lower part strengthening structure of an A-pillar. Background Art

[0002] In the automobile body frame structure, the A-pillar part plays important roles such as bearing force, transmitting force, and buckling deformation during a collision. When a vehicle undergoes a frontal collision or an offset collision, it is not only necessary to protect the integrity of the passenger compartment, but for an electric vehicle, it is also necessary to ensure that the battery module is not subjected to excessive extrusion force. In the traditional technology, the front stop end of the side wall strengthening plate at the lower part of the A-pillar is fixedly welded to the inner panel of the A-pillar. If a frontal collision or an offset collision occurs, it will cause the collision energy to concentrate at the welded joint, resulting in the connection failure and unable to play an adequate protective role. Content of the Utility Model

[0003] In view of this, the utility model aims to provide a lower part strengthening structure of an A-pillar to solve at least one of the technical problems such as the connection failure between the side wall strengthening plate and the inner panel of the A-pillar and the insufficient protective effect of the A-pillar part on structures such as the passenger compartment or the battery module in the prior art.

[0004] The utility model provides a lower part strengthening structure of an A-pillar, which includes a lower strengthening plate, a side wall strengthening plate, an outer longitudinal beam plate, and an inner panel of the A-pillar. The front end of the inner panel of the A-pillar is connected to the front end of the side wall strengthening plate. The rear end of the outer longitudinal beam plate is connected to the inner panel of the A-pillar. The side wall strengthening plate and the outer longitudinal beam plate are connected through the lower strengthening plate. At least a part of the lower strengthening plate is located on the front side of the front end of the inner panel of the A-pillar and on the front side of the front end of the side wall strengthening plate.

[0005] Further, a first installation part is provided at one end of the lower strengthening plate close to the outside of the vehicle, and a second installation part is provided at one end of the lower strengthening plate close to the inside of the vehicle. The first installation part is installed on the side wall strengthening plate through a first fastener, and the second installation part is installed on the outer longitudinal beam plate through a second fastener.

[0006] Further, it further includes a front door lower hinge mounting plate. The front door lower hinge mounting plate is installed on the side wall strengthening plate, and the first installation part, the side wall strengthening plate, and the front door lower hinge mounting plate are fixedly connected through the first fastener.

[0007] Further, the lower strengthening plate includes a first plate segment, a second plate segment, and a third plate segment. The first plate segment, the second plate segment, and the third plate segment are sequentially connected to form a U-shaped cavity. The front end of the inner panel of the A-pillar and the front end of the side wall strengthening plate are located in the U-shaped cavity. The third plate segment is connected to the outer longitudinal beam plate, and the first plate segment is connected to the side wall strengthening plate.

[0008] Furthermore, a first gap is provided between the first plate segment and the side wall reinforcement plate, a second gap is provided between the second plate segment and the front end of the inner A-pillar panel, a third gap is provided between the second plate segment and the front end of the side wall reinforcement plate, and a fourth gap is provided between the third plate segment and the inner A-pillar panel.

[0009] Furthermore, a first rib protruding toward the outside of the vehicle is provided on the first plate segment; a second rib protruding toward the inside of the vehicle is provided on the third plate segment.

[0010] Furthermore, the third gap is larger than the second gap, a first sealant and a second sealant are respectively provided on the inner A-pillar panel and the side wall reinforcement plate, and the first sealant and the second sealant are disposed to cover the connection portion between the front end of the side wall reinforcement plate and the inner A-pillar panel.

[0011] Furthermore, a third sealant and a fourth sealant are respectively provided on the outer longitudinal beam panel and the inner A-pillar panel, and the third sealant and the fourth sealant are disposed to cover the connection portion between the rear end of the outer longitudinal beam panel and the inner A-pillar panel.

[0012] Furthermore, the lower reinforcement plate further includes a fourth plate segment, the third plate segment is connected to the outer longitudinal beam panel through the fourth plate segment, and a fifth gap is provided between the fourth plate segment and the third sealant.

[0013] Furthermore, a third rib protruding toward the front side of the vehicle is provided on the fourth plate segment.

[0014] Furthermore, a sixth gap is provided between the first sealant and the first plate segment, and a seventh gap is provided between the first sealant and the second plate segment.

[0015] Furthermore, a front sill plug is further included. The front end of the front sill plug is connected to the front end of the inner A-pillar panel, at least a part of the front end of the side wall reinforcement plate is connected to the front sill plug, and at least a part of the front sill plug is located in the U-shaped cavity.

[0016] The lower A-pillar strengthening structure of the present utility model connects the sidewall strengthening plate and the outer longitudinal beam plate through a lower strengthening plate, and at least a part of the lower strengthening plate is located on the front side of the front end of the inner A-pillar plate and on the front side of the front end of the sidewall strengthening plate, playing a role in protecting and strengthening the connection between the inner A-pillar plate and the sidewall strengthening plate; when a vehicle undergoes a frontal collision or an offset collision, compared with the connection between the inner A-pillar plate and the sidewall strengthening plate, the lower strengthening plate will bear the collision force first, and then transfer the collision energy to the outer longitudinal beam plate and the sidewall strengthening plate, avoiding the concentration of collision energy at the connection between the inner A-pillar plate and the sidewall strengthening plate, thereby avoiding the connection failure between the inner A-pillar plate and the sidewall strengthening plate caused by the collision, improving the structural strength of the A-pillar part, and better protecting vehicle structures such as the occupant compartment and the battery module.

[0017] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following specifically gives preferred embodiments and, in conjunction with the accompanying drawings, makes a detailed description as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In the drawings, which are not necessarily drawn to scale, the same reference numerals may describe similar components in different views. The same reference numerals with letter suffixes or different letter suffixes may represent different instances of similar components. The drawings generally illustrate various embodiments by way of example and not limitation, and are used together with the description and the claims to explain the disclosed embodiments. When appropriate, the same reference numerals are used throughout the drawings to refer to the same or similar parts. Such embodiments are illustrative and are not intended to be an exhaustive or exclusive embodiment of the device or method. The drawings described herein are used to provide a further understanding of the present utility model and form a part of this application. The illustrative embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation of the present utility model. In the drawings:

[0019] Figure 1 is the first schematic diagram of the lower A-pillar strengthening structure in the present utility model;

[0020] Figure 2 is the second schematic diagram of the lower A-pillar strengthening structure in the present utility model;

[0021] Figure 3 is Figure 2 the first cross-sectional view at A-A in (sealant not shown);

[0022] Figure 4 is Figure 2 the second cross-sectional view at A-A in;

[0023] Figure 5 is the schematic diagram of the lower strengthening plate in the present utility model;

[0024] Figure 6 It is a schematic diagram of the lower part strengthening structure of the A-pillar near the front door lower hinge mounting plate in the present utility model;

[0025] Figure 7 It is an enlarged schematic diagram of the lower part strengthening structure of the A-pillar near the front sill plug plate in the present utility model.

[0026] Among them, the above-mentioned drawings include the following reference numerals:

[0027] 1, lower strengthening plate; 10, U-shaped cavity; 11, first plate section; 111, first rib; 12, second plate section; 13, third plate section; 131, second rib; 14, fourth plate section; 141, third rib; 101, first mounting portion; 102, second mounting portion; 2, side wall strengthening plate; 3, outer longitudinal beam plate; 31, third sealant; 21, second sealant; 4, inner A-pillar plate; 41, first sealant; 42, fourth sealant; 5, front door lower hinge mounting plate; 6, front sill plug plate. Detailed implementation manners

[0028] Next, specific embodiments of the present utility model will be described in detail with reference to the drawings, but it is not a limitation of the present utility model.

[0029] It should be noted that the terms "first", "second", etc. in the description and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of the present utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units does not necessarily need to be limited to those clearly listed steps or units, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0030] This specification may use the phrase "in one embodiment", "in another embodiment", "in yet another embodiment" or "in other embodiments", which can all refer to one or more of the same or different embodiments according to the present utility model.

[0031] Combined with Figures 1 to 6As shown in the figure, the Z-axis in the figure represents the vertical direction of the vehicle, the positive direction of the Z-axis represents upward, and the negative direction of the Z-axis represents downward. The X-axis in the figure represents the longitudinal direction of the vehicle, the positive direction of the X-axis represents forward, and the negative direction of the X-axis represents backward. The Y-axis in the figure represents the lateral direction of the vehicle, the positive direction of the Y-axis represents the left side, and the negative direction of the Y-axis represents the right side. In the figure, the lower part of the A-pillar reinforcement structure on the left side of the vehicle is taken as an example for illustration. In the following text, the relevant descriptions of the outside and inside of the vehicle respectively represent the side along the positive direction of the Y-axis and the side along the negative direction of the Y-axis. In addition, it should be understood that the lower part of the A-pillar reinforcement structure can also be provided on the right side of the vehicle.

[0032] The present invention provides a lower part of the A-pillar reinforcement structure, including a lower reinforcement plate 1, a side wall reinforcement plate 2, an outer longitudinal beam plate 3, and an A-pillar inner plate 4. The front end of the A-pillar inner plate 4 is connected to the front end of the side wall reinforcement plate 2. The rear end of the outer longitudinal beam plate 3 is connected to the A-pillar inner plate 4. The side wall reinforcement plate 2 and the outer longitudinal beam plate 3 are connected by the lower reinforcement plate 1. At least a part of the lower reinforcement plate 1 is located on the front side of the front end of the A-pillar inner plate 4 and the front side of the front end of the side wall reinforcement plate 2.

[0033] Combined with Figures 1 to 4 As shown, the front end of the A-pillar inner plate 4 (i.e., one end along the positive direction of the X-axis in the figure) and the front end of the side wall reinforcement plate 2 (i.e., one end along the positive direction of the X-axis in the figure) are welded and fixed to each other (it can also be other connection methods, which can be selected according to specific designs). The rear end of the outer longitudinal beam plate 3 (i.e., one end along the negative direction of the X-axis in the figure) is welded and fixed to the A-pillar inner plate 4 (it can also be other connection methods, which can be selected according to specific designs). The two ends of the lower reinforcement plate 1 along the positive and negative directions of the Y-axis are respectively fixedly connected to the side wall reinforcement plate 2 and the outer longitudinal beam plate 3. A part of the plate surface of the lower reinforcement plate 1 is located on the front side of the front end of the A-pillar inner plate 4 (i.e., the side close to the X-axis lateral direction at one end of the A-pillar inner plate 4 along the positive direction of the X-axis), and at the same time, this part is also located on the front side of the front end of the side wall reinforcement plate 2 (i.e., the side close to the X-axis lateral direction at one end of the side wall reinforcement plate 2 along the positive direction of the X-axis), which is equivalent to this part of the plate surface of the lower reinforcement plate 1 being located on the front side of the welded joint of the A-pillar inner plate 4 and the side wall reinforcement plate 2.

[0034] The lower part strengthening structure of the A-pillar of the present utility model connects the side wall strengthening plate 2 and the outer longitudinal beam plate 3 through the lower strengthening plate 1, and at least part of the lower strengthening plate 1 is located on the front side of the front end of the inner A-pillar plate 4 and the front side of the front end of the side wall strengthening plate 2, playing a role in protecting and strengthening the connection between the inner A-pillar plate 4 and the side wall strengthening plate 2; when a vehicle has a frontal collision or an offset collision, compared with the connection between the inner A-pillar plate 4 and the side wall strengthening plate 2, the lower strengthening plate 1 will bear the collision force first, and then transfer the collision energy to the outer longitudinal beam plate 3 and the side wall strengthening plate 2, avoiding the concentration of collision energy at the connection between the inner A-pillar plate 4 and the side wall strengthening plate 2, thereby avoiding the connection failure between the inner A-pillar plate 4 and the side wall strengthening plate 2 caused by the collision, improving the structural strength of the A-pillar part, and better protecting vehicle structures such as the occupant compartment and the battery module.

[0035] Further, a first mounting portion 101 is provided at one end of the lower strengthening plate 1 close to the outer side of the vehicle, and a second mounting portion 102 is provided at one end of the lower strengthening plate 1 close to the inner side of the vehicle. The first mounting portion 101 is mounted on the side wall strengthening plate 2 through a first fastener, and the second mounting portion 102 is mounted on the outer longitudinal beam plate 3 through a second fastener.

[0036] Combined with Figure 5 As shown, a first mounting portion 101 is integrally connected to one end of the lower strengthening plate 1 close to the outer side of the vehicle (i.e., the end along the positive Y-axis direction), and a second mounting portion 102 is integrally connected to one end of the lower strengthening plate 1 close to the inner side of the vehicle (i.e., the end along the negative Y-axis direction). In this embodiment, the first mounting portion 101 and the second mounting portion 102 are equivalent to the flanging structures on both sides of the lower strengthening plate 1 along the positive and negative Y-axis directions. The first mounting portion 101 is mounted on the side wall strengthening plate 2 through a first fastener (a bolt fastener in this embodiment, and other fasteners can be selected according to needs), and the second mounting portion 102 is mounted on the outer longitudinal beam plate 3 through a second fastener (a bolt fastener in this embodiment, and other fasteners can be selected according to needs, and fasteners different from the first fastener can be selected).

[0037] In this way, the lower strengthening plate 1 is respectively mounted to the side wall strengthening plate 2 and the outer longitudinal beam plate 3 through the first mounting portion 101 and the second mounting portion 102, having good connection stability and being beneficial to the transfer of collision energy.

[0038] Further, it further includes a front door lower hinge mounting plate 5. The front door lower hinge mounting plate 5 is mounted on the side wall strengthening plate 2, and the first mounting portion 101, the side wall strengthening plate 2 and the front door lower hinge mounting plate 5 are fixedly connected through the first fastener.

[0039] Combined with Figure 5 and Figure 6As shown, the front door lower hinge mounting plate 5 can be mounted to the side wall reinforcement plate 2 by a connection means such as bolt fasteners, etc., and the front door lower hinge mounting plate 5 is located inside the side wall reinforcement plate 2 (i.e., on the reverse side of the Y-axis in the figure) to provide a hinge mounting point for the vehicle front door. Through holes are provided on the first mounting portion 101, the side wall reinforcement plate 2, and the front door lower hinge mounting plate 5 for a first fastener to pass through. In this embodiment, the first fastener is a bolt, and a nut is welded on the front door lower hinge mounting plate 5 so that the bolt cooperates with the nut to fixedly connect the first mounting portion 101, the side wall reinforcement plate 2, and the front door lower hinge mounting plate 5 together.

[0040] In this way, the first mounting portion 101, the side wall reinforcement plate 2, and the front door lower hinge mounting plate 5 are fixedly connected, thereby improving the connection stability of the first mounting portion 101, which is beneficial to the transfer of collision energy from the lower reinforcement plate 1 to the side wall reinforcement plate 2; in addition, during assembly, by lifting the entire body frame, the position corresponding to the front door lower hinge mounting plate 5 is more suitable for workers to perform installation operations, improving the assembly convenience of the lower reinforcement plate 1.

[0041] Further, the lower reinforcement plate 1 includes a first plate section 11, a second plate section 12, and a third plate section 13. The first plate section 11, the second plate section 12, and the third plate section 13 are sequentially connected to form a U-shaped cavity 10. The front end of the A-pillar inner panel 4 and the front end of the side wall reinforcement plate 2 are located inside the U-shaped cavity 10. The third plate section 13 is connected to the outer longitudinal beam plate 3, and the first plate section 11 is connected to the side wall reinforcement plate 2.

[0042] Combined Figures 2 to 5 As shown, the first plate section 11, the second plate section 12, and the third plate section 13 are sequentially connected to form a U-shaped cavity 10. And in this embodiment, the lower reinforcement plate 1 is respectively connected to the side wall reinforcement plate 2 and the inner longitudinal beam plate 3 through the first mounting portion 101 and the second mounting portion 102 (equivalent to the third plate section 13 being connected to the outer longitudinal beam plate 3 through the second mounting portion 102, and the first plate section 11 being connected to the side wall reinforcement plate 2 through the first mounting portion 101). Therefore, the lower reinforcement plate 1 is generally similar to a "Ji" shape. The front end of the A-pillar inner panel 4 and the front end of the side wall reinforcement plate 2 are connected to each other and are both located inside the U-shaped cavity 10.

[0043] In this way, the front end of the A-pillar inner panel 4 and the front end of the side wall reinforcement plate 2 are located in the U-shaped cavity 10 formed by the lower reinforcement plate 1. The formed U-shaped cavity 10 provides a crush energy absorption space to prevent the connection between the A-pillar inner panel 4 and the side wall reinforcement plate 2 from being overstressed and failing.

[0044] Furthermore, a first gap is provided between the first plate segment 11 and the side wall reinforcement plate 2, a second gap is provided between the second plate segment 12 and the front end of the A-pillar inner panel 4, a third gap is provided between the second plate segment 12 and the front end of the side wall reinforcement plate 2, and a fourth gap is provided between the third plate segment 13 and the A-pillar inner panel 4.

[0045] Combined Figure 3 As shown, a first gap x is provided between the first plate segment 11 and the side wall reinforcement plate 2 1 (along the Y-axis direction), a second gap x is provided between the second plate segment 12 and the front end of the A-pillar inner panel 4 2 (along the X-axis direction), a third gap x is provided between the second plate segment 12 and the front end of the side wall reinforcement plate 2 3 (along the X-axis direction), a fourth gap x is provided between the third plate segment 13 and the A-pillar inner panel 4 4 (along the Y-axis direction). In this embodiment, the first gap x 1 can have a value of 10 - 16 mm, the second gap x 2 can have a value of 2 - 5 mm, the third gap x 3 can have a value of 8 - 12 mm, and the fourth gap x 4 can have a value of 10 - 14 mm. In this way, through the first gap, the second gap, the third gap, and the fourth gap, relatively sufficient space is provided for the lower reinforcement plate 1 to collapse and deform after a collision, effectively absorbing collision energy and protecting vehicle structures such as the occupant compartment and the battery module.

[0046] Since some components are not completely parallel to each other, the gap between two plate members described here refers to the distance from a point on one plate member to the other plate member along the direction perpendicular to its own plate surface. For example, the plate surface of the first plate segment 11 is generally parallel to the XZ plane. Therefore, the first gap x 1 refers to the distance from a point on the first plate segment 11 to the corresponding point on the side wall reinforcement plate 2 along the direction perpendicular to the XZ plane, which means that the distances between two plate members at different positions may be different.

[0047] Furthermore, a first rib 111 protruding towards the outside of the vehicle is provided on the first plate segment 11; a second rib 131 protruding towards the inside of the vehicle is provided on the third plate segment 13.

[0048] Combined Figure 5 As shown, two first ribs 111 protruding towards the outside of the vehicle (i.e., protruding towards the positive Y-axis direction) are provided on the first plate segment 11, and three second ribs 131 protruding towards the inside of the vehicle (i.e., protruding towards the negative Y-axis direction) are provided on the third plate segment 13. Further combined with Figure 3 as shown, due to these rib designs, the first gap x in the previous embodiment 1and the fourth gap x 4 has different values at different positions.

[0049] In this way, during a collision, the collision energy is transmitted to the side wall reinforcement plate 2 and the outer longitudinal beam plate 3 through the first plate section 11 and the third plate section 13 respectively. Therefore, the first rib 111 on the first plate section 11 and the second rib 131 on the third plate section 13 can increase the structural strength, which is beneficial to the transmission and absorption of the collision energy.

[0050] Furthermore, the third gap is greater than the second gap. The first sealant 41 and the second sealant 21 are respectively provided on the inner A-pillar plate 4 and the side wall reinforcement plate 2, and the first sealant 41 and the second sealant 21 are arranged to cover the connection between the front end of the side wall reinforcement plate 2 and the inner A-pillar plate 4.

[0051] Combined with Figure 3 as shown, the third gap x 3 is greater than the second gap x 2 , such that the front end of the side wall reinforcement plate 2 (i.e., the end along the positive X-axis direction) is slightly set back compared to the front end of the inner A-pillar plate 4 (i.e., the end along the positive X-axis direction). Combined with Figure 4 as shown, the first sealant 41 is provided at the front side position of the inner A-pillar plate 4 where it is in front of the front end of the side wall reinforcement plate 2 (i.e., on the side close to the positive X-axis of the end of the side wall reinforcement plate 2 along the positive X-axis direction), and the second sealant 21 is provided at the front edge of the side wall reinforcement plate 2, thereby covering the connection between the front end of the side wall reinforcement plate 2 and the inner A-pillar plate 4, and playing a role in sealing, waterproofing and rust prevention for the connection between the side wall reinforcement plate 2 and the inner A-pillar plate 4.

[0052] Furthermore, the third sealant 31 and the fourth sealant 42 are respectively provided on the outer longitudinal beam plate 3 and the inner A-pillar plate 4, and the third sealant 31 and the fourth sealant 42 are arranged to cover the connection between the rear end of the outer longitudinal beam plate 3 and the inner A-pillar plate 4.

[0053] Combined with Figure 4 as shown, the third sealant 31 is provided on the outer longitudinal beam plate 3, and the fourth sealant 42 is provided on the inner A-pillar plate 4. Among them, the third sealant 31 is located at the rear edge of the outer longitudinal beam plate 3, and the fourth sealant 42 is located on the inner A-pillar plate 4 on the side of the rear end of the outer longitudinal beam plate 3 facing the outside of the vehicle (i.e., on the side of the end of the outer longitudinal beam plate 3 along the negative X-axis direction facing the positive Y-axis direction). The third sealant 31 and the fourth sealant 42 cover the connection between the outer longitudinal beam plate 3 and the inner A-pillar plate 4, and play a role in sealing, waterproofing and rust prevention for the connection between the outer longitudinal beam plate 3 and the inner A-pillar plate 4.

[0054] Preferably, the lower reinforcing plate 1 further includes a fourth plate segment 14. The third plate segment 13 is connected to the outer longitudinal beam plate 3 through the fourth plate segment 14, and a fifth gap is provided between the fourth plate segment 14 and the third sealant 31.

[0055] Combined Figure 3 with Figure 5 as shown, the third plate segment 13, the fourth plate segment 14 and the second mounting portion 102 are integrally connected. The second mounting portion 102 is mounted on the outer longitudinal beam plate 3 through a second fastener. It is equivalent to that the third plate segment 13 is connected to the outer longitudinal beam plate 3 through the fourth plate segment 14 and the second mounting portion 102. Then combined Figure 4 as shown, a fifth gap x is provided between the fourth plate segment 14 and the third sealant 31 5 , the plate surface of the fourth plate segment 14 is generally along the YZ plane (with a certain inclination angle to the YZ plane). Therefore, the fifth gap x 5 refers to the distance from a point on the fourth plate segment 14 perpendicular to its own plate surface to the third sealant 31. The fifth gap x 5 can be 4 - 8 mm.

[0056] In this way, by designing the fifth gap between the fourth plate segment 14 and the third sealant 31, the distance between the lower reinforcing plate 1 and the third sealant 31 is ensured, and the thickness of the third sealant 31 meets the requirements, avoiding rubbing off the sealant during assembly and improving the convenience of assembly.

[0057] Furthermore, a sixth gap is provided between the first sealant 41 and the first plate segment 11, and a seventh gap is provided between the first sealant 41 and the second plate segment 12.

[0058] Combined Figure 4 as shown, a sixth gap x is provided between the first plate segment 11 and the first sealant 41 6 , the sixth gap x 6 can be 12 - 18 mm to ensure that the thickness of the first sealant 41 meets the requirements and can avoid the lower reinforcing plate 1 rubbing off the first sealant 41. A seventh gap x is provided between the second plate segment 12 and the first sealant 41 7 , the seventh gap x 7 can be 1 - 4 mm to ensure that the width of the first sealant 41 meets the requirements and can avoid the lower reinforcing plate 1 rubbing off the first sealant 41, providing convenience for the assembly of the lower reinforcing plate 1.

[0059] Furthermore, combined Figure 4 as shown, an eighth gap x is provided between the second mounting portion 102 and the third sealant 31 8。The second installation part 102 is connected to the fourth plate segment 14 on the positive Y-axis side. The side on the positive Y-axis of the second installation part 102 is the part closest to the third sealant 31. Therefore, an eighth gap x is provided between the second installation part 102 and the third sealant 31. 8 , the eighth gap x 8 can take a value of 10 - 16 mm to ensure that the width of the third sealant 31 meets the requirements, and it can prevent the lower reinforcement plate 1 from rubbing off the third sealant 31, providing convenience for the assembly of the lower reinforcement plate 1.

[0060] Further, as shown in Figure 5 , a third rib 141 protruding towards the front side of the vehicle is provided on the fourth plate segment 14. Due to the design of the third rib 141, as shown in Figure 4 the fifth gap x shown in 5 may have unequal values at different positions. When a collision occurs, the collision energy is transmitted to the outer panel 3 of the longitudinal beam after passing through the third plate segment 13 and the fourth plate segment 14. The third rib 141 has the effect of increasing the structural strength of the fourth plate segment 14, thus facilitating the transmission and absorption of the collision energy.

[0061] Further, it further includes a front sill plug 6. The front end of the front sill plug 6 is connected to the front end of the A-pillar inner panel 4. At least a part of the front end of the side wall reinforcement plate 2 is connected to the front sill plug 6. At least a part of the front sill plug 6 is located within the U-shaped cavity 10.

[0062] As shown in combination with Figure 6 and Figure 7 , the front sill plug 6 is connected to the front end of the vehicle's sill beam. A flanging structure extending in the positive X-axis direction is provided on the front sill plug 6 near the positive Y-axis side. The front end of the front sill plug 6 is the front end of this flanging structure. The front end of the front sill plug 6 forms a three-layer plate structure between the front ends of the side wall reinforcement plate 2 and the A-pillar inner panel 4. At least a part of the front end of the front sill plug 6 is located within the U-shaped cavity 10. The lower reinforcement plate 1 also plays a certain role in protecting the front sill plug 6, further enhancing the structural strength of the A-pillar part.

[0063] For ease of description, spatial relative terms, such as "above", "over", "on the upper surface", "upper", etc., may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "over" other devices or structures will then be positioned "below" or "beneath" the other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device may also be positioned in other different ways, rotated 90 degrees or in other orientations, and the corresponding explanations for the spatial relative descriptions used herein are made accordingly.

[0064] In addition to the above, it should also be noted that the "one embodiment", "another embodiment", "embodiment", etc. mentioned in this specification refer to the specific features, structures or characteristics described in connection with the embodiment being included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in connection with any one embodiment, it is intended that the implementation of such feature, structure or characteristic in combination with other embodiments also falls within the scope of the present invention.

[0065] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An A-pillar lower reinforcement structure, characterized in that: It includes a lower reinforcement plate, a side reinforcement plate, a longitudinal beam outer plate, and an A-pillar inner plate, the front end of the A-pillar inner plate is connected to the front end of the side reinforcement plate, the rear end of the longitudinal beam outer plate is connected to the A-pillar inner plate, the side reinforcement plate is connected to the longitudinal beam outer plate through the lower reinforcement plate, and the lower reinforcement plate is at least partially located on the front side of the front end of the A-pillar inner plate and the front side of the front end of the side reinforcement plate.

2. The A-pillar lower reinforcement structure according to claim 1, characterized in that: The lower reinforcement plate has a first mounting portion at one end close to the outer side of the vehicle, and a second mounting portion at one end close to the inner side of the vehicle. The first mounting portion is mounted on the side reinforcement plate via a first fastener, and the second mounting portion is mounted on the longitudinal beam outer plate via a second fastener.

3. The A-pillar lower reinforcement structure according to claim 2, characterized in that: It also includes a front door lower hinge mounting plate, which is mounted on the side panel reinforcement plate. The first mounting portion, the side panel reinforcement plate and the front door lower hinge mounting plate are fixedly connected by the first fastener.

4. The A-pillar lower reinforcement structure according to claim 1, characterized in that: The lower reinforcement plate includes a first plate segment, a second plate segment and a third plate segment, the first plate segment, the second plate segment and the third plate segment are sequentially connected to form a U-shaped cavity, the front end of the A-pillar inner plate and the front end of the side reinforcement plate are located in the U-shaped cavity, the third plate segment is connected to the longitudinal beam outer plate, and the first plate segment is connected to the side reinforcement plate.

5. The A-pillar lower reinforcement structure according to claim 4, characterized in that: A first gap is provided between the first plate section and the side panel reinforcement plate, a second gap is provided between the second plate section and the front end of the A-pillar inner panel, a third gap is provided between the second plate section and the front end of the side panel reinforcement plate, and a fourth gap is provided between the third plate section and the A-pillar inner panel.

6. The A-pillar lower reinforcement structure according to claim 4, characterized in that: The first plate segment is provided with a first convex rib protruding toward the outer side of the vehicle; the third plate segment is provided with a second convex rib protruding toward the inner side of the vehicle.

7. The A-pillar lower reinforcement structure according to claim 5, characterized in that: The third gap is larger than the second gap, and a first sealant and a second sealant are respectively provided on the A-pillar inner panel and the side panel reinforcement plate. The first sealant and the second sealant are covered at the connection between the front end of the side panel reinforcement plate and the A-pillar inner panel.

8. The A-pillar lower reinforcement structure according to claim 4, characterized in that: The longitudinal beam outer panel and the A-pillar inner panel are provided with a third sealant and a fourth sealant, respectively. The third sealant and the fourth sealant are provided to cover the connection between the rear end of the longitudinal beam outer panel and the A-pillar inner panel.

9. The A-pillar lower reinforcement structure according to claim 8, characterized in that: The lower reinforcing plate further includes a fourth plate segment, the third plate segment is connected to the longitudinal beam outer plate via the fourth plate segment, and a fifth gap is provided between the fourth plate segment and the third sealant.

10. The A-pillar lower reinforcement structure according to claim 9, characterized in that: The fourth plate section is provided with a third rib protruding toward the front side of the vehicle.

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