Auxiliary frame reinforcing structure and vehicle

Abstract

The utility model relates to the technical field of auxiliary frames, and particularly discloses an auxiliary frame reinforcing structure and a vehicle, and the auxiliary frame reinforcing structure comprises a first reinforcing piece and a second reinforcing piece. Due to the fact that the motor suspension mounting points and the swing arm mounting points in the auxiliary frame are seriously loaded, the connection strength among the cross beam, the first motor suspension mounting frame and the first longitudinal beam can be further enhanced through the arrangement; meanwhile, the connection strength among the cross beam, the second motor suspension mounting frame and the second longitudinal beam can be enhanced through the second reinforcing piece, so that the overall force transmission of the auxiliary frame is more reasonable, and the overall structural strength and the anti-fatigue performance of the auxiliary frame are improved. By means of the auxiliary frame reinforcing structure, the problems that in the prior art, due to the fact that the strength of the joint of the cross beam and the longitudinal beam of an auxiliary frame is insufficient, the strength of the motor suspension installation frame and the swing arm support is insufficient, and fatigue occurs easily are effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary frames, in particular to an auxiliary frame reinforcement structure and a vehicle. Background Art

[0002] Currently, the subframe is the skeleton of the front and rear axles and is an important component of the front and rear axles. The subframe is not a complete frame, but only supports the front and rear axles and suspension brackets. The axles and suspension brackets are connected to the body through the subframe. Among them, in new energy vehicles, the subframe mainly supports components such as motors and control arms, and also provides installation locations for motors, control arms and other components. Traditional tubular beam subframes are usually composed of two longitudinal beams and two or three cross beams. However, the intersection of the cross beams and longitudinal beams is directly welded without strengthening the key intersections, which results in a relatively simple force transmission structure of the subframe as a whole.

[0003] The existing tubular beam subframe has insufficient reinforcement at the structural junctions, and the ability to limit deformation of the subframe at the junctions of the crossbeam and longitudinal beams is limited. In particular, strength and fatigue problems are prone to occur in areas with relatively severe loads, such as the motor suspension mounting frame and the swing arm bracket. Utility Model Content

[0004] The purpose of the utility model is to provide a subframe reinforcement structure and a vehicle, so as to solve the problem that the subframe in the prior art is insufficient in strength at the intersection of the crossbeam and the longitudinal beam, which easily leads to insufficient strength and fatigue at the motor suspension mounting frame and the swing arm bracket.

[0005] On the one hand, the utility model provides a subframe reinforcement structure, which includes a crossbeam, a first longitudinal beam and a second longitudinal beam, the first longitudinal beam and the second longitudinal beam are respectively connected to the two ends of the crossbeam, the crossbeam is provided with a first motor suspension mounting bracket and a second motor suspension mounting bracket arranged at intervals, the first longitudinal beam is provided with a first swing arm bracket, and the second longitudinal beam is provided with a second swing arm bracket. The subframe reinforcement structure also includes: a first reinforcement member, the crossbeam and the first motor suspension mounting bracket are both connected to one end of the first reinforcement member, and the other end of the first reinforcement member is connected to the first longitudinal beam; a second reinforcement member, the crossbeam and the second motor suspension mounting bracket are both connected to one end of the second reinforcement member, and the other end of the second reinforcement member is connected to the second longitudinal beam.

[0006] As an optional technical solution for the subframe reinforcement structure, the first reinforcement extends along the direction of the line between the center point of the first motor suspension mounting bracket and the center point of the first swing arm bracket, and the second reinforcement extends along the direction of the line between the center point of the second motor suspension mounting bracket and the center point of the second swing arm bracket.

[0007] As an optional technical solution for the subframe reinforcement structure, the first reinforcement member includes a first reinforcement plate and a second reinforcement plate connected to each other, the first reinforcement plate and the second reinforcement plate are perpendicular to each other, the crossbeam and the first motor suspension mounting frame are both connected to one end of the first reinforcement plate, the other end of the first reinforcement plate is connected to the first longitudinal beam, one end of the second reinforcement plate is connected to the crossbeam, and the other end of the second reinforcement plate is connected to the first longitudinal beam.

[0008] As an optional technical solution for the subframe reinforcement structure, the first reinforcement plate has a first connecting edge and a second connecting edge, the length of the first connecting edge is greater than the length of the second connecting edge, the first connecting edge is connected to the cross beam, and the second connecting edge is connected to the first longitudinal beam.

[0009] As an optional technical solution for the subframe reinforcement structure, both the first reinforcement plate and the second reinforcement plate have a first weight-reducing hole.

[0010] As an optional technical solution for the sub-frame reinforcement structure, both the first reinforcement plate and the second reinforcement plate have a first positioning hole.

[0011] As an optional technical solution for the subframe reinforcement structure, the second reinforcement member includes a third reinforcement plate and a fourth reinforcement plate connected to each other, the third reinforcement plate and the fourth reinforcement plate are perpendicular to each other, the crossbeam and the second motor suspension mounting frame are both connected to one end of the third reinforcement plate, the other end of the third reinforcement plate is connected to the second longitudinal beam, one end of the fourth reinforcement plate is connected to the crossbeam, and the other end of the fourth reinforcement plate is connected to the second longitudinal beam.

[0012] As an optional technical solution for the subframe reinforcement structure, the third reinforcement plate has a third connecting edge and a fourth connecting edge, the length of the third connecting edge is greater than the length of the fourth connecting edge, the third connecting edge is connected to the cross beam, and the fourth connecting edge is connected to the second longitudinal beam.

[0013] As an optional technical solution for the sub-frame reinforcement structure, the third reinforcement plate and the fourth reinforcement plate both have second positioning holes.

[0014] On the other hand, the present invention provides a vehicle comprising the subframe reinforcement structure in any of the above solutions.

[0015] The beneficial effects of the utility model are:

[0016] The present invention provides a subframe reinforcement structure comprising a first reinforcement member and a second reinforcement member. The crossbeam and the first motor suspension mounting bracket are each connected to one end of the first reinforcement member, while the other end of the first reinforcement member is connected to the first longitudinal beam. Furthermore, the crossbeam and the second motor suspension mounting bracket are each connected to one end of the second reinforcement member, while the other end of the second reinforcement member is connected to the second longitudinal beam. Because the motor suspension mounting points and the swing arm mounting points in the subframe are subject to relatively severe loads, this arrangement allows the first reinforcement member to further enhance the connection strength between the crossbeam, the first motor suspension mounting bracket, and the first longitudinal beam. Simultaneously, the second reinforcement member enhances the connection strength between the crossbeam, the second motor suspension mounting bracket, and the second longitudinal beam. This improves the overall force transmission of the subframe, thereby enhancing the overall structural strength and fatigue resistance of the subframe. The present invention effectively addresses the existing subframe reinforcement structure, which suffers from insufficient strength at the intersection of the crossbeam and longitudinal beams, which can easily lead to insufficient strength and fatigue at the motor suspension mounting bracket and the swing arm bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of the auxiliary frame reinforcement structure in an embodiment of the present utility model;

[0018] Figure 2 This is a schematic structural diagram of the auxiliary frame reinforcement structure in another embodiment of the present utility model;

[0019] Figure 3 This is a schematic structural diagram of the first reinforcement member in an embodiment of the present utility model;

[0020] Figure 4 This is a schematic structural diagram of the second reinforcement member in an embodiment of the present utility model;

[0021] Figure 5 This is a schematic structural diagram of the first reinforcement member in an embodiment of the present invention at another angle.

[0022] In the picture:

[0023] 1. Crossbeam; 11. First motor suspension mounting bracket; 12. Second motor suspension mounting bracket;

[0024] 21. First longitudinal beam; 22. Second longitudinal beam; 23. First swing arm bracket; 24. Second swing arm bracket;

[0025] 3. First reinforcement member; 31. First reinforcement plate; 311. First connecting edge; 312. Second connecting edge; 32. Second reinforcement plate; 33. First weight-reducing hole; 34. First positioning hole;

[0026] 4. Second reinforcement member; 41. Third reinforcement plate; 411. Third connecting edge; 412. Fourth connecting edge; 42. Fourth reinforcement plate; 43. Second positioning hole;

[0027] 51. First connecting line; 52. Second connecting line. DETAILED DESCRIPTION

[0028] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a specific position, be constructed and operated in a specific position, and therefore should not be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0030] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0031] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0032] like Figures 1 to 5 As shown, this embodiment provides a subframe reinforcement structure, which includes a crossbeam 1, a first longitudinal beam 21 and a second longitudinal beam 22. In this solution, the first longitudinal beam 21 and the second longitudinal beam 22 are respectively connected to the two ends of the crossbeam 1, and the crossbeam 1 is provided with a first motor suspension mounting bracket 11 and a second motor suspension mounting bracket 12 arranged at intervals. The first longitudinal beam 21 is provided with a first swing arm bracket 23, and the second longitudinal beam 22 is provided with a second swing arm bracket 24.

[0033] With the subframe reinforcement structure of the present invention, the crossbeam 1 and the first motor mount 11 are connected to one end of the first reinforcement 3, the other end of which is connected to the first longitudinal beam 21. The crossbeam 1 and the second motor mount 12 are connected to one end of the second reinforcement 4, the other end of which is connected to the second longitudinal beam 22. Because the motor mount and swing arm mounting points in the subframe are subject to relatively severe loads, this arrangement allows the first reinforcement 3 to further strengthen the connection strength between the crossbeam 1, the first motor mount 11, and the first longitudinal beam 21. Simultaneously, the second reinforcement 4 strengthens the connection strength between the crossbeam 1, the second motor mount 12, and the second longitudinal beam 22. This improves the overall force transmission of the subframe, thereby enhancing the structural strength and fatigue resistance of the subframe. The subframe reinforcement structure of the present invention effectively solves the existing subframe problem of insufficient strength at the intersection of the crossbeam and longitudinal beams, which can easily lead to insufficient strength and fatigue at the motor mount and swing arm brackets.

[0034] Optionally, the first reinforcement member 3 and the second reinforcement member 4 are made of QSTE420™.

[0035] In some embodiments, as Figure 2 As shown, the first connecting line 51 is the line connecting the center point of the first motor mount 11 and the center point of the first swing arm bracket 23, and the second connecting line 52 is the line connecting the center point of the second motor mount 12 and the center point of the second swing arm bracket 24. The first reinforcement 3 extends along the direction of the first connecting line 51. This arrangement allows the first reinforcement 3 to share the force of the horizontal load transmitted by the first swing arm bracket 23, transforming the original single force transmission path into two force transmission paths, thereby making the overall force distribution of the subframe reinforcement structure more uniform. Similarly, the second reinforcement 4 extends along the direction of the second connecting line 52. Similarly, the second reinforcement 4 can share the force of the horizontal load transmitted by the second swing arm bracket 24, thereby making the overall force distribution of the subframe reinforcement structure more uniform.

[0036] Specifically, the first reinforcement 3 includes a first reinforcement plate 31 and a second reinforcement plate 32 that are connected to each other. The first reinforcement plate 31 and the second reinforcement plate 32 are perpendicular to each other, connecting the crossbeam 1 and the first motor suspension mounting frame 11 to one end of the first reinforcement plate 31, and the other end of the first reinforcement plate 31 is connected to the first longitudinal beam 21. The crossbeam 1, the first motor suspension mounting frame 11 and the first longitudinal beam 21 can be connected through the first reinforcement plate 31; and one end of the second reinforcement plate 32 is connected to the crossbeam 1, and the other end of the second reinforcement plate 32 is connected to the first longitudinal beam 21. The shape of the first reinforcement plate 31 is generally triangular. This arrangement can better withstand the torsional load transmitted by the motor suspension, thereby improving the strength and fatigue resistance of the structure. The shape of the second reinforcement plate 32 is generally strip-shaped.

[0037] Optionally, the second reinforcing plate 32 has a first connecting surface and a second connecting surface, wherein the first connecting surface is connected to the crossbeam 1, and the second connecting surface is connected to the first longitudinal beam 21. The shape of the first connecting surface matches the outer wall of the crossbeam, and the shape of the second connecting surface matches the outer wall of the first longitudinal beam 21. In this embodiment, both the first connecting surface and the second connecting surface are arc-shaped, which can improve the connection strength between the second reinforcing plate 32 and the crossbeam 1 and the first longitudinal beam 21.

[0038] Furthermore, if Figure 3 As shown, the first reinforcing plate 31 has a first connecting edge 311 and a second connecting edge 312, wherein the length of the first connecting edge 311 is greater than the length of the second connecting edge 312. This arrangement can increase the connection area between the first reinforcing plate 31 and the crossbeam 1 and improve the connection strength. The first connecting edge 311 is connected to the crossbeam 1, and the second connecting edge 312 is connected to the first longitudinal beam 21.

[0039] In this embodiment, the first reinforcing plate 31 and the second reinforcing plate 32 both have first weight-reducing holes 33. This configuration can reduce the weight of the first reinforcing plate 31 and the second reinforcing plate 32, thereby achieving the purpose of lightweighting the entire subframe.

[0040] Specifically, the first reinforcing plate 31 and the second reinforcing plate 32 each have a first positioning hole 34. This arrangement allows the first positioning hole 34 to serve as a positioning tool when the first reinforcing plate 31 is welded to the crossbeam 1 and the first longitudinal beam 21; similarly, the first positioning hole 34 serves as a positioning tool when the second reinforcing plate 32 is welded to the crossbeam 1 and the second longitudinal beam 22.

[0041] In this embodiment, if Figure 4 and Figure 5As shown, the second reinforcement 4 includes a third reinforcement plate 41 and a fourth reinforcement plate 42 that are interconnected. The third reinforcement plate 41 and the fourth reinforcement plate 42 are perpendicular to each other. The crossbeam 1 and the second motor suspension mounting frame 12 are both connected to one end of the third reinforcement plate 41, and the other end of the third reinforcement plate 41 is connected to the second longitudinal beam 22. The crossbeam 1, the second motor suspension mounting frame 12 and the second longitudinal beam 22 can be connected through the third reinforcement plate 41; one end of the fourth reinforcement plate 42 is connected to the crossbeam 1, and the other end of the fourth reinforcement plate 42 is connected to the second longitudinal beam 22. The shape of the third reinforcement plate 41 is generally triangular. This arrangement can better withstand the torsional load transmitted by the motor suspension, thereby improving the strength and fatigue resistance of the structure. The shape of the fourth reinforcement plate 42 is generally strip-shaped, and the structure of the fourth reinforcement plate 42 is the same as that of the second reinforcement plate 32.

[0042] Furthermore, the third reinforcing plate 41 has a third connecting edge 411 and a fourth connecting edge 412. The length of the third connecting edge 411 is greater than the length of the fourth connecting edge 412. This arrangement can increase the connection area between the third connecting edge 411 and the beam 1, thereby ensuring the connection strength between the third reinforcing plate 41 and the beam 1; the fourth connecting edge 412 is connected to the second longitudinal beam 22.

[0043] Optionally, the fourth reinforcing plate 42 has a second weight-reducing hole. This arrangement can reduce the weight of the fourth reinforcing plate 42, thereby achieving the purpose of lightweighting the entire subframe.

[0044] Specifically, the third reinforcing plate 41 and the fourth reinforcing plate 42 both have a second positioning hole 43. In this way, when the third reinforcing plate 41 and the fourth reinforcing plate 42 are welded, the second positioning hole 43 can play a role in positioning.

[0045] This embodiment also provides a vehicle, including the subframe reinforcement structure of the above-mentioned scheme. In a vehicle using the present invention, the first reinforcement member 3 can further enhance the connection strength between the crossbeam 1, the first motor suspension mounting frame 11, and the first longitudinal beam 21; at the same time, the second reinforcement member 4 can enhance the connection strength between the crossbeam 1, the second motor suspension mounting frame 12, and the second longitudinal beam 22. This makes the overall force transmission of the subframe more reasonable, thereby improving the overall structural strength and fatigue resistance of the subframe. The vehicle using the present invention effectively solves the problem of insufficient strength and fatigue at the motor suspension mounting frame and the swing arm bracket in the existing subframe due to insufficient strength at the intersection of the crossbeam and the longitudinal beam.

[0046] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A subframe reinforcement structure, comprising a crossbeam (1), a first longitudinal beam (21) and a second longitudinal beam (22), wherein the first longitudinal beam (21) and the second longitudinal beam (22) are respectively connected to two ends of the crossbeam (1), a first motor suspension mounting frame (11) and a second motor suspension mounting frame (12) are provided on the crossbeam (1), the first longitudinal beam (21) is provided with a first swing arm bracket (23), and the second longitudinal beam (22) is provided with a second swing arm bracket (24), characterized in that: The subframe reinforcement structure also includes: A first reinforcement member (3), the crossbeam (1) and the first motor suspension mounting frame (11) are all connected to one end of the first reinforcement member (3), and the other end of the first reinforcement member (3) is connected to the first longitudinal beam (21); The second reinforcement member (4), the crossbeam (1), and the second motor suspension mounting frame (12) are all connected to one end of the second reinforcement member (4), and the other end of the second reinforcement member (4) is connected to the second longitudinal beam (22).

2. The subframe reinforcement structure according to claim 1, characterized in that: The first reinforcement member (3) extends in the direction of a line between a center point of the first motor suspension mounting frame (11) and a center point of the first swing arm bracket (23), and the second reinforcement member (4) extends in the direction of a line between a center point of the second motor suspension mounting frame (12) and a center point of the second swing arm bracket (24).

3. The subframe reinforcement structure according to claim 1, characterized in that: The first reinforcement member (3) includes a first reinforcement plate (31) and a second reinforcement plate (32) connected to each other, the first reinforcement plate (31) and the second reinforcement plate (32) are perpendicular to each other, the crossbeam (1) and the first motor suspension mounting frame (11) are both connected to one end of the first reinforcement plate (31), the other end of the first reinforcement plate (31) is connected to the first longitudinal beam (21), one end of the second reinforcement plate (32) is connected to the crossbeam (1), and the other end of the second reinforcement plate (32) is connected to the first longitudinal beam (21).

4. The subframe reinforcement structure according to claim 3, characterized in that: The first reinforcing plate (31) has a first connecting edge (311) and a second connecting edge (312), the length of the first connecting edge (311) is greater than the length of the second connecting edge (312), the first connecting edge (311) is connected to the crossbeam (1), and the second connecting edge (312) is connected to the first longitudinal beam (21).

5. The subframe reinforcement structure according to claim 3, characterized in that: The first reinforcing plate (31) and the second reinforcing plate (32) both have a first weight-reducing hole (33).

6. The subframe reinforcement structure according to claim 3, characterized in that: The first reinforcing plate (31) and the second reinforcing plate (32) both have a first positioning hole (34).

7. The subframe reinforcement structure according to any one of claims 1 to 6, characterized in that: The second reinforcement member (4) includes a third reinforcement plate (41) and a fourth reinforcement plate (42) connected to each other, the third reinforcement plate (41) and the fourth reinforcement plate (42) are perpendicular to each other, the crossbeam (1) and the second motor suspension mounting frame (12) are both connected to one end of the third reinforcement plate (41), the other end of the third reinforcement plate (41) is connected to the second longitudinal beam (22), one end of the fourth reinforcement plate (42) is connected to the crossbeam (1), and the other end of the fourth reinforcement plate (42) is connected to the second longitudinal beam (22).

8. The subframe reinforcement structure according to claim 7, characterized in that: The third reinforcing plate (41) has a third connecting edge (411) and a fourth connecting edge (412), the length of the third connecting edge (411) is greater than the length of the fourth connecting edge (412), the third connecting edge (411) is connected to the crossbeam (1), and the fourth connecting edge (412) is connected to the second longitudinal beam (22).

9. The subframe reinforcement structure according to claim 7, characterized in that: The third reinforcing plate (41) and the fourth reinforcing plate (42) both have a second positioning hole (43).

10. A vehicle, characterized in that: The invention comprises the subframe reinforcement structure according to any one of claims 1 to 9.

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