Casting supporting structure in vehicle and vehicle

Abstract

The utility model discloses a casting supporting structure in a vehicle and the vehicle, the casting supporting structure is used for supporting and connecting a seat mounting part and an auxiliary frame mounting part of the vehicle, and the plane where the seat mounting part is located and the plane where the auxiliary frame mounting part is located have height difference; the casting supporting structure comprises a longitudinal beam and a cross beam connected to one side of the longitudinal beam, the seat mounting part is connected with the longitudinal beam and the cross beam, and the auxiliary frame mounting part is arranged at the connecting position of the longitudinal beam and the cross beam; the longitudinal beam has a height difference matched with the positions of the seat mounting part and the auxiliary frame mounting part in the extending direction of the longitudinal beam, the cross beam comprises an upper groove and a lower groove, openings of the upper groove and the lower groove face opposite directions, and one side wall of the upper groove is connected with the seat mounting part. The cross beam is arranged at the position of the auxiliary frame installation point, when the height difference between a seat installation plane and the auxiliary frame installation point is large, the rigidity of the auxiliary frame installation point can be improved, the overall mode and rigidity of a vehicle body, the dynamic rigidity of the auxiliary frame installation point and the local mode of a floor are improved, and the road noise level of the whole vehicle is improved.

Description

Technical Field

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

[0002] The mounting points of the body subframe are the connection points between the body structure and the subframe, which can transmit the impact from the road surface and the excitation of the power transmission system. The stiffness of the subframe mounting points is crucial. In order to improve the stiffness of the subframe mounting points, a support can be provided between the subframe mounting points and the seat mounting plane. Currently, the adopted support structure is a U-shaped crossbeam or a reinforcing rib support crossbeam.

[0003] However, when the height difference between the subframe mounting points and the seat mounting plane is large, the U-shaped crossbeam or the reinforcing rib support crossbeam is not sufficient to provide enough stiffness, and the dynamic stiffness of the subframe mounting points is likely to be insufficient, and the body modes and stiffness and strength do not meet the standards. The excitation from the road surface or the power transmission is transmitted to the body through the subframe mounting points, resulting in a roaring or shaking phenomenon inside the vehicle, affecting the experience and comfort of the vehicle occupants. Summary of the Utility Model

[0004] This application provides a casting support structure in a vehicle and a vehicle, aiming to at least solve the technical problem of insufficient stiffness of the subframe mounting points when the height difference between the subframe mounting points and the seat mounting plane is large in the related art.

[0005] In a first aspect, an embodiment of this application provides a casting support structure in a vehicle. The casting support structure is used to support and connect a seat mounting part and a subframe mounting part of the vehicle, and there is a height difference between the planes where the seat mounting part and the subframe mounting part are located; the casting support structure includes a longitudinal beam and a crossbeam connected to one side of the longitudinal beam. The seat mounting part is respectively connected to the longitudinal beam and the crossbeam, and the subframe mounting part is arranged at the connection position of the longitudinal beam and the crossbeam; the longitudinal beam has a height difference in its extending direction that matches the positions of the seat mounting part and the subframe mounting part. The crossbeam includes an upper groove and a lower groove with openings facing opposite directions, and one side wall of the upper groove is connected to the seat mounting part.

[0006] Optionally, the casting support structure in the vehicle is an integral casting.

[0007] Optionally, the seat mounting part includes a seat mounting surface in contact with the seat, and the upper groove opens towards the seat mounting surface.

[0008] Optionally, reinforcing ribs are arranged in the upper groove and the lower groove, and the reinforcing ribs are connected to the side walls of the crossbeam.

[0009] Optionally, there are multiple reinforcing ribs.

[0010] Optionally, reinforcing ribs are provided on the side of the seat mounting portion opposite to the seat mounting surface.

[0011] Optionally, there are a plurality of the reinforcing ribs.

[0012] Optionally, the cross beam has a two-way draft structure.

[0013] Optionally, a pouring gate is provided in the lower groove and the seat mounting portion.

[0014] In a second aspect, an embodiment of the present application provides a vehicle, including the casting support structure described in any one of the above.

[0015] In the embodiment of the present application, the casting support structure is used to support and connect the seat mounting portion and the subframe mounting portion of the vehicle, and there is a height difference between the planes where the seat mounting portion and the subframe mounting portion are located; the casting support structure includes a longitudinal beam and a cross beam connected to one side of the longitudinal beam, the seat mounting portion is respectively connected to the longitudinal beam and the cross beam, and the subframe mounting portion is arranged at the connection position of the longitudinal beam and the cross beam; the longitudinal beam has a height difference in its extending direction that matches the positions of the seat mounting portion and the subframe mounting portion, the cross beam includes an upper groove and a lower groove with openings facing opposite directions, one side wall of the upper groove is connected to the seat mounting portion, the cross beam is arranged at the subframe mounting point position, when the height difference between the seat mounting plane and the subframe mounting point is large, the stiffness of the subframe mounting point can be improved, and the overall body mode, stiffness and strength, dynamic stiffness of the subframe mounting point, and local mode of the floor can be enhanced, and the road noise of the whole vehicle can be reduced.

[0016] The above description is only an overview of the technical solution of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present application more obvious and understandable, the specific embodiments of the present application are specifically described below. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the casting support structure provided by the embodiment of the present application Figure 1 ;

[0018] Figure 2 Schematic diagram of the casting support structure provided by the embodiment of the present application Figure 2 ;

[0019] Figure 3 Schematic cross-sectional view of the casting support structure provided by the embodiment of the present application;

[0020] Figure 4 Schematic cross-sectional view of the cross beam provided by the embodiment of the present application.

[0021] Reference numerals:

[0022] 1 - Crossbeam, 11 - Upper groove, 12 - Lower groove, 13 - Reinforcing rib, 14 - Pouring gate, 2 - Longitudinal beam, 3 - Seat mounting part, 31 - Seat mounting surface, 32 - Support rib, 4 - Subframe mounting part. Detailed implementation manners

[0023] Hereinafter, exemplary embodiments of the present application will be described in more detail with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present application can be more thoroughly understood and the scope of the present application can be completely conveyed to those skilled in the art.

[0024] To solve the above problems, the embodiments of the present application provide a casting support structure in a vehicle and a vehicle.

[0025] Referring to Figures 1 to 4 , the embodiments of the present application disclose a casting support structure in a vehicle. The casting support structure is used to support and connect the seat mounting part 3 and the subframe mounting part 4 of the vehicle, and there is a height difference between the planes where the seat mounting part 3 and the subframe mounting part 4 are located; the casting support structure includes a longitudinal beam 2 and a crossbeam 1 connected to one side of the longitudinal beam 2. The seat mounting part 3 is respectively connected to the longitudinal beam 2 and the crossbeam 1, and the subframe mounting part 4 is arranged at the connection position of the longitudinal beam 2 and the crossbeam 1; the longitudinal beam 2 has a height difference matching the positions of the seat mounting part 3 and the subframe mounting part 4 in its extending direction, and the crossbeam 1 includes an upper groove 11 and a lower groove 12 with openings facing opposite directions, and one side wall of the upper groove 11 is connected to the seat mounting part 3.

[0026] Specifically, the casting support structure can be used to support and connect the seat mounting part 3 and the subframe mounting part 4 of the vehicle. The seat mounting part 3 and the subframe mounting part 4 are not in the same plane, and there is a height difference between the planes where they are located. The casting support structure includes a longitudinal beam 2. One side of the longitudinal beam 2 is connected to one end of the crossbeam 1. The longitudinal beam 2 and the crossbeam 1 can be perpendicularly connected, or the connection angle can be designed according to needs, which is not limited in the present application. The crossbeam cross-section can be H-shaped. The H-shaped cross-section beam has higher strength and stiffness compared with the U-shaped cross-section beam, providing better bending and compressive resistance.

[0027] The seat mounting part 3 is respectively connected to the longitudinal beam 2 and the crossbeam 1. The seat mounting part 3 is connected to one of the side walls of the crossbeam 1. One side wall of the crossbeam 1 near the top end of the seat mounting part 3 is turned outward, and the folded edge is connected to the seat mounting part 3. When the height difference between the seat mounting part 3 and the subframe mounting part 4 is relatively large, the height of the side wall of the crossbeam will also be relatively high. If a U-shaped crossbeam is used for connection, since the connection part of the U-shaped crossbeam is located at the bottom of the side surface, there is a lack of support in the middle of the side surface, and the stiffness and stability of the U-shaped crossbeam are insufficient, so it cannot provide sufficient stiffness and support for the subframe mounting part.

[0028] The connecting plate between the two side walls of the H-shaped cross beam in the embodiment of the present application can better support the side walls. Therefore, when the height difference between the seat mounting part 3 and the subframe mounting part 4 is large, the H-shaped cross beam in the embodiment of the present application can better support the subframe mounting part 4 and improve the stiffness of the subframe mounting part 4.

[0029] The subframe mounting part 4 is arranged at the connection position of the longitudinal beam 2 and the cross beam 1 and corresponds to the position where it is connected to the cross beam 1 and the longitudinal beam 2. In other words, the side of the seat mounting part 3 for mounting the vehicle seat can be the upper side, and the side opposite to the upper side is the lower side. Since the subframe mounting part 4 is used to mount the subframe and the subframe is located on the side close to the vehicle frame, the subframe mounting part 4 is located on the lower side, and the side of the seat mounting part 3 for mounting the vehicle seat and the subframe mounting part 4 are on opposite sides.

[0030] The longitudinal beam 2 has a height difference in its extending direction that matches the positions of the seat mounting part 3 and the subframe mounting part 4. The cross beam 1 includes an upper groove 11 and a lower groove 12 with openings facing opposite directions. One side wall of the upper groove 11 is connected to the seat mounting part 3, the opening of the upper groove 11 faces the side of the seat mounting part 3 for mounting the seat, and the opening of the lower groove 12 faces the opposite direction to the opening of the upper groove 11.

[0031] In the embodiment of the present application, the casting support structure is used to support and connect the seat mounting part 3 and the subframe mounting part 4 of the vehicle, and there is a height difference between the planes where the seat mounting part 3 and the subframe mounting part 4 are located; the casting support structure includes a longitudinal beam 2 and a cross beam 1 connected to one side of the longitudinal beam. The seat mounting part 3 is respectively connected to the longitudinal beam 2 and the cross beam 1, and the subframe mounting part 4 is arranged at the connection position of the longitudinal beam 2 and the cross beam 1; the longitudinal beam 2 has a height difference in its extending direction that matches the positions of the seat mounting part 3 and the subframe mounting part 4. The cross beam 1 includes an upper groove 11 and a lower groove 12 with openings facing opposite directions. One side wall of the upper groove 11 is connected to the seat mounting part 3. The cross beam 1 is arranged at the subframe mounting point position. When the height difference between the seat mounting plane and the subframe mounting point is large, it can improve the stiffness of the subframe mounting point, enhance the overall body mode and stiffness, the dynamic stiffness of the subframe mounting point, the local mode of the floor, and reduce the road noise of the whole vehicle.

[0032] Refer to Figures 1 - 4 , in the embodiment of the present application, the casting support structure in the vehicle is an integral casting.

[0033] In the related art, the design of the support structure uses multiple independent reinforcing plates, and these reinforcing plates need to be connected together through a welding process. Since the design includes a large number of parts, this not only leads to a significant increase in the number of parts but also raises the manufacturing cost of the mold. During the welding process, due to the diversity of parts and complex geometries, the welding process becomes quite complex, requiring highly skilled welders and delicate operations. In addition, this multi-part combined structure is difficult to maintain high precision and consistency during the production process, resulting in a low precision of the final product and significant differences between different batches. Such differences may affect the performance and reliability of the structure.

[0034] In the embodiments of the present application, an integral casting is adopted. The support structure is integrally cast and formed. Through a single casting process, the structure that might originally require multiple parts and complex assembly steps is transformed into a seamless and continuous whole. This not only enhances the overall rigidity of the support structure, making it more stable and reliable when bearing external loads, but also improves the manufacturing precision of the product. Since the entire structure is formed in one mold at a time, the dimensions and shapes can be precisely controlled, avoiding the cumulative errors that may occur during the multi-part assembly process. In addition, the production process of the integral casting ensures a high degree of consistency between products. The performance and appearance of each casting can be kept consistent, which is crucial for ensuring product quality and meeting customer expectations. This integrated casting not only simplifies the production process, reduces costs, but also improves the overall quality and reliability of the product.

[0035] Referring to Figure 1 , Figure 2 and Figure 4 , the seat mounting portion 3 includes a seat mounting surface 31 in contact with the seat, and the upper groove 11 opens towards the seat mounting surface 31.

[0036] Specifically, the seat mounting portion 3 is used to mount the seat. The surface in contact with the seat can be the seat mounting surface 31, and the upper groove 11 opens towards the seat mounting surface 31. That is, in the direction of the seat where the upper groove 11 faces, the lower groove 12 faces the opposite direction to the upper groove 11.

[0037] Referring to Figures 1 - 2 , reinforcing ribs 13 are provided in the upper groove 11 and the lower groove 12, and the reinforcing ribs 13 are connected to the side walls of the cross beam 1.

[0038] Specifically, reinforcing ribs 13 can be provided in the upper groove 11 and the lower groove 12 to improve the stiffness of the cross beam 1, thereby enhancing the ability of the cross beam 1 to resist bending and deformation. Both ends of the reinforcing ribs 13 can be connected to the side walls of the cross beam 1, and the bottom of the reinforcing ribs 13 is connected to the connecting plate between the two side walls.

[0039] Due to the force-bearing characteristics of the crossbeam, it can be known that when bearing the upper load, the lower part of the crossbeam 1 is subjected to greater bending. Therefore, the connecting plate between the two side walls can be arranged close to the lower side of the side wall of the crossbeam 1 to improve the lower part's bending resistance of the crossbeam 1, that is, the depth of the upper groove 11 can be greater than the depth of the lower groove 12. Since the upper groove 11 has a larger depth and is subjected to less bending, the height of the reinforcing ribs can be set relatively small and the number can be small, as long as it can support the side wall.

[0040] Since the lower side of the crossbeam 1 is subjected to greater bending, it is necessary to strengthen the lower groove 12 located at the lower part of the crossbeam 1. The height of the reinforcing rib 13 in the lower groove 12 can be greater than the height of the reinforcing rib 13 in the upper groove 11, and the number of the reinforcing ribs 13 in the upper groove 11 can be less than the number of the reinforcing ribs 13 in the lower groove 12. The reinforcing ribs 13 in the lower groove 12 can be set more densely than those in the upper groove 11 to meet the bending resistance requirements of the crossbeam 1.

[0041] The upper groove 11 has low bending resistance requirements, a larger depth, and can be provided with a small number of reinforcing ribs 13 with a small height, which can save materials and reduce costs. At the same time, the crossbeam 1 in the lower groove 12 has high bending resistance requirements. Therefore, the reinforcing ribs 13 in the lower groove 12 are arranged with a smaller spacing and a larger height, which can meet the bending resistance requirements of the crossbeam 1. Compared with the traditional U-shaped crossbeam, the H-shaped crossbeam with the upper groove 11 and the lower groove 12 is adopted in the embodiment of the present application. The number and height of the reinforcing ribs 13 in the upper groove 11 and the lower groove 12 are different, which can not only meet the bending resistance requirements of the crossbeam, but also save materials and is beneficial to lightweight.

[0042] Multiple reinforcing ribs 13 can be arranged in the upper groove 11 and the lower groove 12, and the number of the reinforcing ribs can be set according to the force-bearing situation.

[0043] It should be noted that in the embodiment of the present application, the reinforcing ribs can be arranged in a shape of an eight, that is, the reinforcing ribs 13 are obliquely arranged in the upper groove 11 and the lower groove 12 and are not perpendicularly connected to the side wall of the crossbeam 1. The reinforcing ribs 13 arranged in a shape of an eight can be connected end to end, that is, each reinforcing rib is connected to the adjacent reinforcing rib. By adopting the reinforcing ribs 13 arranged in a shape of an eight and connected end to end, the strength and bending resistance of the crossbeam 1 can be better improved.

[0044] Refer to Figures 1 - 2 , on the side of the seat mounting part 3 opposite to the seat mounting surface 31, a support rib 32 is provided.

[0045] Specifically, since the seat mounting part is a plane with a large area and lacks support, and the seat mounting part 3 is subjected to the load transmitted by the seat. In order to improve the stiffness and force-bearing performance of the seat mounting part 3, it needs to be strengthened. A support rib 32 can be provided on the lower side of the seat mounting part 3. The support rib 32 can be provided in multiple numbers, and the support rib 32 can improve the load-bearing capacity and stability of the seat mounting part 3.

[0046] Meanwhile, since the seat mounting portion is connected to a side wall of the cross beam 1, the support rib 32 can provide support stiffness to the side surface of the cross beam 1. The direction of the support rib 32 can be perpendicular to the side wall of the cross beam so as to better provide support for the side surface of the cross beam 1. The support rib 32 can also be arranged in a grid shape to further improve the support ability.

[0047] The support rib 32 not only improves the stiffness of the seat mounting portion, ensures the stability of the seat and the safety of riding, but also provides additional support stiffness to the upper side elevation of the cross beam 1, effectively enhancing the overall structural strength of the cross beam 1. Especially in resisting bending moment, it improves the bending resistance performance of the cross beam 1, ensures the stability and durability of the whole structure, not only improves the performance of the seat system, but also enhances the overall safety and comfort of the vehicle.

[0048] Refer to Figures 1 - 4 , the cross beam 1 is a two-way draft structure.

[0049] Specifically, draft is a process of adjusting the taper of the mold or casting surface during the manufacturing process, especially in casting and injection molding, to ensure that the product can be smoothly removed from the mold. By designing a certain slope, i.e., draft angle, on the parting surface of the mold, the product can be separated from the mold along a predetermined direction after cooling, avoiding demolding difficulties or damage to the product caused by adhesion. Related technologies usually adopt one-way draft, and the whole draft surface is inclined in one direction, that is, there is only one draft angle. For some products with complex shapes, additional demolding mechanisms may be required to assist demolding. If the product shape does not allow one-way demolding, forced use may cause surface damage or deformation of the product. In the case of a relatively large cross beam height, pouring defects such as shrinkage cavities, air bubbles, and stress concentration may occur during one-way draft, and these problems will directly affect the quality and consistency of the product.

[0050] In the embodiment of the present application, a two-way draft structure is adopted to perform draft on the upper and lower directions of the cross beam 1, reducing the friction and stress concentration during demolding, and avoiding defects such as scratches, cracks on the product surface, and shrinkage cavities and air bubbles inside. It can improve the structural integrity and surface quality of the cross beam 1, ensure the consistency and reliability of the product. In addition, the design of two-way draft also enhances the flexibility and adaptability of the mold, enabling the mold to better adapt to the production of the cross beam 1 with complex shapes and high-precision requirements, thereby improving the overall production efficiency and product quality.

[0051] Refer to Figure 1 , a pouring gate 14 is provided in the lower groove 12 and the seat mounting portion 3.

[0052] Specifically, the casting gating system (also known as the gate or feed inlet) is a passage used to guide molten metal or alloy into the casting cavity during the casting process. In the embodiments of the present application, on the lower side of the seat mounting portion 3, i.e., the side away from the seat, there is a support rib 32. During pouring, the flow of the molten metal will be affected. Therefore, a gating system 14 can be provided, and the number of the gating systems 14 can be determined according to the height of the support rib 32, the pouring range, the characteristics of the molten metal, etc.

[0053] A relatively large number of and relatively high reinforcing ribs 13 are provided in the lower groove 12. A gating system 14 can be provided to control the flow of the molten metal, improve the quality of the casting, and reduce defects. The number of the gating systems 14 can be determined according to the height of the reinforcing ribs 13, the pouring range, the characteristics of the molten metal, etc.

[0054] For the upper groove 11, due to its relatively large depth and the small number and low height of the reinforcing ribs 13 provided inside, and since the molten metal has viscosity and temperature drop during pouring, the filling and solidification of the casting can be achieved by relying on the self-cooling of the molten metal, which can eliminate the design and manufacturing of the gating system, simplify the casting process, reduce the amount of metal used, and lower the cost.

[0055] The embodiments of the present application also disclose a vehicle including any of the above-mentioned casting support structures.

[0056] Refer to Figures 1 to 4 In the embodiments of the present application, a casting support structure in a vehicle is disclosed. The casting support structure is used to support and connect the seat mounting portion 3 and the subframe mounting portion 4 of the vehicle, and there is a height difference between the planes where the seat mounting portion 3 and the subframe mounting portion 4 are located; the casting support structure includes a longitudinal beam 2 and a cross beam 1 connected to one side of the longitudinal beam. The seat mounting portion 3 is respectively connected to the longitudinal beam 2 and the cross beam 1, and the subframe mounting portion 4 is arranged at the connection position of the longitudinal beam 2 and the cross beam 1; the longitudinal beam 2 has a height difference matching the positions of the seat mounting portion 3 and the subframe mounting portion 4 in its extending direction, and the cross beam 1 includes an upper groove 11 and a lower groove 12 with openings facing opposite directions, and one side wall of the upper groove 11 is connected to the seat mounting portion 3.

[0057] Specifically, the casting support structure can be used to support and connect the seat mounting portion 3 and the subframe mounting portion 4 of the vehicle. The seat mounting portion 3 and the subframe mounting portion 4 are not in the same plane, and there is a height difference between the planes where they are located. The casting support structure includes a longitudinal beam 2, and one side of the longitudinal beam 2 is connected to one end of the cross beam 1. The longitudinal beam 2 and the cross beam 1 can be perpendicularly connected, or the connection angle can be designed according to needs, which is not limited in the present application. The cross-sectional shape of the cross beam can be an H shape. The H-shaped cross-sectional beam has higher strength and stiffness compared to the U-shaped cross-sectional beam, providing better bending and compressive resistance.

[0058] The seat mounting portion 3 is respectively connected to the longitudinal beam 2 and the cross beam 1. The seat mounting portion 3 is connected to one side wall of the cross beam 1. One end of a side wall of the cross beam 1 near the top of the seat mounting portion 3 is folded outward, and the folded edge is connected to the seat mounting portion 3. When the height difference between the seat mounting portion 3 and the subframe mounting portion 4 is relatively large, the height of the side wall of the cross beam will also be relatively high. If a U-shaped cross beam is used for connection, since the connecting portion of the U-shaped cross beam is located at the bottom of the side surface, there is a lack of support in the middle of the side surface, resulting in insufficient stiffness and stability of the U-shaped cross beam, and thus it is unable to provide sufficient stiffness and support for the subframe mounting portion.

[0059] However, the connecting plate between the two side walls of the H-shaped cross beam in the embodiment of the present application can better provide support for the side walls. Therefore, when the height difference between the seat mounting portion 3 and the subframe mounting portion 4 is relatively large, using the H-shaped cross beam in the embodiment of the present application can better provide support for the subframe mounting portion 4 and improve the stiffness of the subframe mounting portion 4.

[0060] The subframe mounting portion 4 is provided at the connection position of the longitudinal beam 2 and the cross beam 1 and corresponds to the position where the cross beam 1 and the longitudinal beam 2 are joined. In other words, the side for mounting the vehicle seat of the seat mounting portion 3 can be the upper side, and the side opposite to the upper side is the lower side. Since the subframe mounting portion 4 is used to mount the subframe and the subframe is located on the side close to the vehicle frame, therefore, the subframe mounting portion 4 is located on the lower side, and the side for mounting the vehicle seat of the seat mounting portion 3 and the subframe mounting portion 4 are located on opposite sides.

[0061] The longitudinal beam 2 has a height difference in its extending direction that matches the positions of the seat mounting portion 3 and the subframe mounting portion 4. The cross beam 1 includes an upper groove 11 and a lower groove 12 with openings facing opposite directions. One side wall of the upper groove 11 is connected to the seat mounting portion 3, the opening of the upper groove 11 faces the side for mounting the seat of the seat mounting portion 3, and the opening of the lower groove 12 faces the opposite direction to the opening of the upper groove 11.

[0062] In the embodiment of the present application, the casting support structure is used to support and connect the seat mounting portion 3 and the subframe mounting portion 4 of the vehicle, and there is a height difference between the planes where the seat mounting portion 3 and the subframe mounting portion 4 are located; the casting support structure includes a longitudinal beam 2 and a cross beam 1 connected to one side of the longitudinal beam. The seat mounting portion 3 is respectively connected to the longitudinal beam 2 and the cross beam 1, and the subframe mounting portion 4 is provided at the connection position of the longitudinal beam 2 and the cross beam 1; the longitudinal beam 2 has a height difference in its extending direction that matches the positions of the seat mounting portion 3 and the subframe mounting portion 4. The cross beam 1 includes an upper groove 11 and a lower groove 12 with openings facing opposite directions. One side wall of the upper groove 11 is connected to the seat mounting portion 3. The cross beam 1 is provided at the subframe mounting point position. When the height difference between the seat mounting plane and the subframe mounting point is relatively large, it can improve the stiffness of the subframe mounting point, enhance the overall vehicle body mode and stiffness, the dynamic stiffness of the subframe mounting point, the local mode of the floor, and reduce the road noise of the whole vehicle.

[0063] Reference Figures 1 - 4 In the embodiment of the present application, the casting support structure in the vehicle is an integral casting.

[0064] In the related art, the design of the support structure uses multiple independent reinforcing plates, and these reinforcing plates need to be connected together by welding processes. Since the design includes a large number of parts, this not only leads to a significant increase in the number of parts, but also raises the manufacturing cost of the mold. During the welding process, due to the diversity of parts and complex geometries, the welding process becomes quite complex, requiring highly skilled welders and delicate operations. In addition, this multi-part combined structure is difficult to maintain high precision and consistency during the production process, resulting in a lower precision of the final product and significant differences between different batches. Such differences may affect the performance and reliability of the structure.

[0065] In the embodiment of the present application, an integral casting is adopted. The support structure is integrally cast as a whole. Through a single casting process, a structure that might originally require multiple parts and complex assembly steps is transformed into a seamless and continuous whole. This not only enhances the overall rigidity of the support structure, making it more stable and reliable when bearing external loads, but also improves the manufacturing precision of the product. Since the entire structure is formed in one mold at a time, the dimensions and shapes can be precisely controlled, avoiding the cumulative errors that might occur during the multi-part assembly process. In addition, the production process of the integral casting ensures a high degree of consistency between products. The performance and appearance of each casting can be kept consistent, which is crucial for ensuring product quality and meeting customer expectations. This integrated casting not only simplifies the production process, reduces costs, but also improves the overall quality and reliability of the product.

[0066] Reference Figure 1 、 Figure 2 and Figure 4 The seat mounting portion 3 includes a seat mounting surface 31 in contact with the seat, and the upper groove 11 opens towards the seat mounting surface 31.

[0067] Specifically, the seat mounting portion 3 is used to mount the seat. One side in contact with the seat can be the seat mounting surface 31, and the upper groove 11 opens towards the seat mounting surface 31. That is, the upper groove 11 faces the seat, and the lower groove 12 faces the opposite direction to the upper groove 11.

[0068] Reference Figures 1 - 2 Reinforcing ribs 13 are provided in the upper groove 11 and the lower groove 12, and the reinforcing ribs 13 are connected to the side wall of the cross beam 1.

[0069] Specifically, stiffeners 13 can be provided in the upper groove 11 and the lower groove 12 to increase the stiffness of the cross beam 1, thereby enhancing the ability of the cross beam 1 to resist bending and deformation. Both ends of the stiffener 13 can be connected to the side walls of the cross beam 1, and the bottom of the stiffener 13 is connected to the connecting plate between the two side walls.

[0070] Due to the force-bearing characteristics of the cross beam, when bearing the upper load, the lower part of the cross beam 1 is subjected to greater bending. Therefore, the connecting plate between the two side walls can be arranged close to the lower side of the side wall of the cross beam 1 to improve the lower part's bending resistance of the cross beam 1, that is, the depth of the upper groove 11 can be greater than the depth of the lower groove 12. Since the upper groove 11 has a larger depth and is subjected to less bending, the height of the stiffeners can be set smaller and the number can be less, as long as it can support the side wall.

[0071] Since the lower side of the cross beam 1 is subjected to greater bending, it is necessary to strengthen the lower groove 12 located at the lower part of the cross beam 1. The height of the stiffener 13 in the lower groove 12 can be greater than the height of the stiffener 13 in the upper groove 11, and the number of the stiffeners 13 in the upper groove 11 can be less than the number of the stiffeners 13 in the lower groove 12. The stiffeners 13 in the lower groove 12 can be arranged more densely than those in the upper groove 11 to meet the bending resistance requirements of the cross beam 1.

[0072] The upper groove 11 has low bending resistance requirements and a large depth, so the number of stiffeners 13 that can be provided is small and the height is small, which can save materials and reduce costs. At the same time, the cross beam 1 in the lower groove 12 has high bending resistance requirements. Therefore, the spacing of the stiffeners 13 in the lower groove 12 is set smaller and the height is larger, which can meet the bending resistance requirements of the cross beam 1. Compared with the traditional U-shaped cross beam, the H-shaped cross beam with the upper groove 11 and the lower groove 12 adopted in the embodiment of the present application can have different numbers and heights of the stiffeners 13 in the upper groove 11 and the lower groove 12, which can not only meet the bending resistance requirements of the cross beam but also save materials and is beneficial to lightweight.

[0073] A plurality of stiffeners 13 can be provided in the upper groove 11 and the lower groove 12, and the number of the stiffeners can be set according to the force-bearing situation.

[0074] It should be noted that in the embodiment of the present application, the stiffeners can be arranged in a zigzag shape, that is, the stiffeners 13 are obliquely arranged in the upper groove 11 and the lower groove 12 and are not vertically connected to the side surface part 11. The zigzag-shaped stiffeners 13 arranged end to end, that is, each stiffener is connected to the adjacent stiffener. By adopting the zigzag-shaped stiffeners 13 arranged end to end, the strength and bending resistance of the cross beam can be better improved.

[0075] Refer to Figures 1 - 2 , on the side of the seat mounting part 3 opposite to the seat mounting surface 31, a support rib 32 is provided.

[0076] Specifically, since the seat mounting part is a flat surface with a large area and lacks support, and the seat mounting part 3 is subjected to the load transmitted by the seat, in order to improve the stiffness and mechanical properties of the seat mounting part 3, it needs to be strengthened. Support ribs 32 can be provided on the lower side of the seat mounting part 3. Multiple support ribs 32 can be provided, and the support ribs 32 can improve the bearing capacity and stability of the seat mounting part 3.

[0077] At the same time, since the seat mounting part is connected to a side wall of the cross beam 1, the support ribs 32 can provide support stiffness for the side surface of the cross beam 1. The direction of the support ribs 32 can be perpendicular to the side wall of the cross beam to better provide support for the side surface of the cross beam 1. The support ribs 32 can also be arranged in a grid pattern to further improve the support ability.

[0078] The support ribs 32 not only enhance the stiffness of the seat mounting part, ensure the stability of the seat and the safety of riding, but also provide additional support stiffness for the upper side surface of the cross beam 1, effectively enhancing the overall structural strength of the cross beam 1. Especially in resisting bending moments, it improves the bending resistance performance of the cross beam 1, ensures the stability and durability of the entire structure, not only improves the performance of the seat system, but also enhances the overall safety and comfort of the vehicle.

[0079] Refer to Figures 1 - 4 , the cross beam 1 is a two-way draft structure.

[0080] Specifically, draft is a process of adjusting the taper of the mold or casting surface during the manufacturing process, especially in casting and injection molding, to ensure that the product can be smoothly removed from the mold. By designing a certain slope, that is, the draft angle, on the parting surface of the mold, the product can be separated from the mold along the predetermined direction after cooling, avoiding the difficulty of demolding caused by adhesion or damaging the product. The related technology usually adopts single-direction draft, and the entire draft surface is inclined in one direction, that is, there is only one draft angle. For some products with complex shapes, additional demolding mechanisms may be required to assist in demolding. If the product shape does not allow single-direction demolding, forced use may cause surface damage or deformation of the product. In the case of a relatively large cross beam height, casting defects such as shrinkage cavities, air bubbles, and stress concentration may occur during single-direction draft, and these problems will directly affect the quality and consistency of the product.

[0081] In the embodiment of the present application, a two-way draft structure is adopted to perform draft on the upper and lower directions of the cross beam 1, reducing the friction and stress concentration during demolding, and avoiding defects such as scratches, cracks on the product surface, and shrinkage cavities and bubbles inside. It can improve the structural integrity and surface quality of the cross beam 1, ensuring the consistency and reliability of the product. In addition, the design of the two-way draft also enhances the flexibility and adaptability of the mold, enabling the mold to better adapt to the production of the cross beam 1 with complex shapes and high-precision requirements, thereby improving the overall production efficiency and product quality.

[0082] Referring to Figure 1 , a pouring gate 14 is provided in the lower groove 12 and the seat mounting portion 3.

[0083] Specifically, a casting pouring gate (also known as a gate or feed gate) is a channel used to guide molten metal or alloy into the casting cavity during the casting process. In the embodiment of the present application, on the lower side of the seat mounting portion 3, that is, the side away from the seat, there is a support rib 32, and the flow of the molten metal will be affected during pouring. Therefore, a pouring gate 14 can be provided, and the number of the pouring gates 14 can be determined according to the height of the support rib 32, the pouring range, the characteristics of the molten metal, etc.

[0084] A relatively large number and relatively high-height reinforcing ribs 13 are provided in the lower groove 12. A pouring gate 14 can be provided to control the flow of the molten metal, improve the quality of the casting, reduce defects, and the number of the pouring gates 14 can be determined according to the height of the reinforcing ribs 13, the pouring range, the characteristics of the molten metal, etc.

[0085] For the upper groove 11, due to its relatively large depth and the small number and low height of the reinforcing ribs 13 provided inside, and since the molten metal has viscosity and temperature drop during pouring, therefore, the filling and solidification of the casting can be achieved by relying on the natural temperature drop of the molten metal itself, which can eliminate the design and manufacturing of the pouring gate system, simplify the casting process, reduce the usage amount of metal, and lower the cost.

[0086] It should be noted that in this article, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitations, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including that element.

[0087] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative rather than restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims. All of these fall within the protection scope of the present application.

Claims

1. A casting support structure in a vehicle, characterized in that: The casting support structure is used to support and connect the seat mounting portion and the sub-frame mounting portion of the vehicle, and there is a height difference between the planes where the seat mounting portion and the sub-frame mounting portion are located; The casting support structure includes a longitudinal beam and a cross beam connected to one side of the longitudinal beam, the seat mounting portion is connected to the longitudinal beam and the cross beam respectively, and the subframe mounting portion is arranged at the connection position between the longitudinal beam and the cross beam; The longitudinal beam has a height difference in its extending direction that matches the positions of the seat mounting portion and the subframe mounting portion. The cross beam includes an upper groove and a lower groove opening in opposite directions. A side wall of the upper groove is connected to the seat mounting portion.

2. The vehicle casting support structure according to claim 1, characterized in that: The casting support structure is an integral casting.

3. The casting support structure in a vehicle according to claim 1 or 2, characterized in that: The seat mounting portion includes a seat mounting surface that contacts the seat, and the upper groove opens toward the seat mounting surface.

4. The vehicle casting support structure according to claim 1 or 2, characterized in that: Reinforcing ribs are arranged in the upper groove and the lower groove, and the reinforcing ribs are connected to the side walls of the crossbeam.

5. The vehicle casting support structure according to claim 4, characterized in that: The number of the reinforcing ribs is multiple.

6. The casting support structure in a vehicle according to claim 3, characterized in that: A support rib is provided on a side of the seat mounting portion opposite to the seat mounting surface.

7. The casting support structure in a vehicle according to claim 6, characterized in that: The number of the supporting ribs is multiple.

8. The casting support structure in a vehicle according to claim 1 or 2, characterized in that: The crossbeam is a two-way draft structure.

9. The casting support structure in a vehicle according to claim 1 or 2, characterized in that: A pouring port is arranged in the lower groove and the seat mounting portion.

10. A vehicle, characterized in that: A casting support structure comprising the casting support structure according to any one of claims 1 to 9.

Images