Front auxiliary frame structure

Abstract

The utility model relates to the technical field of automobile manufacturing, in particular to a front auxiliary frame structure which comprises a front auxiliary frame (1). A vehicle body mounting structure, a radiator bracket structure, a suspension mounting structure and a swing arm mounting structure are respectively arranged on the front auxiliary frame (1); the position arrangement of the vehicle body mounting structure, the radiator support structure, the suspension mounting structure and the swing arm mounting structure on the front auxiliary frame is improved, and the dynamic stiffness of each mounting point is improved; the vehicle body installation structure, the radiator support structure, the suspension installation structure and the swing arm installation structure are all arranged close to the connecting points of the cross beams and the longitudinal beams, the dynamic stiffness of the front auxiliary frame can be greatly improved, the NVH performance of the front auxiliary frame assembly is effectively improved, cost and weight are greatly reduced, and the NVH performance of the whole vehicle can be remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile manufacturing, and specifically, the utility model relates to a front subframe structure. Background Art

[0002] NVH is an important index for ride comfort in the automotive industry, representing noise, vibration, and harshness; the NVH performance of the subframe assembly, such as subframe modes, dynamic stiffness of the left and right rear mount points, and front and rear swing arm mount points, will cause a series of vehicle NVH problems, ultimately resulting in obvious vibrations, harsh noises, and uncomfortable abnormal noises inside the vehicle; the existing subframe assembly has a complex structure, little improvement in the overall stiffness of the subframe, and poor NVH performance.

[0003] The applicant found through retrieval that a Chinese patent document with the publication number 214565639U disclosed a subframe mounting bracket on November 2, 2021, which includes a subframe mounting portion and a body longitudinal beam mounting portion; the subframe mounting bracket is an integral structure, and the body longitudinal beam mounting portion includes at least two body longitudinal beam mounting points; this device also cannot solve the above technical problems.

[0004] Therefore, in order to improve or solve at least one of the above problems, it is necessary to optimize the existing front subframe structure of the automobile. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a front subframe structure that can improve the stiffness of the front subframe structure, thereby improving the NVH performance.

[0006] To solve the above technical problems, the technical solution adopted by the utility model is: a front subframe structure, including a front subframe; the front subframe is respectively provided with a body mounting structure, a radiator bracket structure, a mount structure, and a swing arm mounting structure.

[0007] The front subframe includes a front crossbeam and a rear crossbeam; a left longitudinal beam and a right longitudinal beam are respectively arranged between the front crossbeam and the rear crossbeam; the left longitudinal beam and the right longitudinal beam are respectively arranged at both ends of the front crossbeam.

[0008] The body mounting structure includes a left front mounting bracket and a left rear mounting bracket; the left front mounting bracket and the left rear mounting bracket are respectively arranged at both ends of the left longitudinal beam; right front mounting brackets and right rear mounting brackets are respectively arranged at both ends of the right longitudinal beam.

[0009] The radiator bracket structure includes a first radiator mounting bracket and a second radiator mounting bracket; the first radiator mounting bracket is arranged at one end of the front crossbeam close to the left front mounting bracket; the second radiator mounting bracket is arranged at one end of the front crossbeam close to the right front mounting bracket.

[0010] The swing arm mounting structure includes a left rear swing arm mounting bracket and a right rear swing arm mounting bracket; the left rear swing arm mounting bracket and the right rear swing arm mounting bracket are respectively arranged at both ends of the rear crossbeam; a left front swing arm mounting bracket is arranged at one end of the left longitudinal beam close to the left rear swing arm mounting bracket; a right front swing arm mounting bracket is arranged at one end of the right longitudinal beam close to the right rear swing arm mounting bracket.

[0011] The mounting structure of the mount includes a front mount bracket, a right mount bracket and a rear mount bracket; the front mount bracket is arranged at one end of the front crossbeam close to the first radiator mounting bracket; the right mount bracket is arranged at one end of the right longitudinal beam close to the right front mounting bracket; the rear mount bracket is arranged in the middle of the rear crossbeam.

[0012] The front mount bracket, the right mount bracket and the rear mount bracket all include side plates; a first flanging is provided on the side plates.

[0013] The cross-sections of the left front mounting bracket, the right front mounting bracket, the first radiator mounting bracket and the second radiator mounting bracket are all L-shaped; the left rear swing arm mounting bracket and the right rear swing arm mounting bracket both include connecting plates; a second flanging is provided on the connecting plates; a third flanging is provided on both the left front swing arm mounting bracket and the right front swing arm mounting bracket.

[0014] The beneficial effects of the present application are as follows:

[0015] 1. By improving the position arrangement of each mounting bracket on the front subframe, the dynamic stiffness of each mounting point is improved; the left front swing arm mounting bracket, the left rear swing arm mounting bracket, the right front swing arm mounting bracket, the right rear swing arm mounting bracket, the front mount bracket and the right mount bracket are all arranged close to the connection points of each crossbeam and longitudinal beam, which can greatly improve the dynamic stiffness at each mounting bracket, not only effectively improving the NVH performance of the front subframe assembly, but also greatly reducing the cost and weight, and can significantly improve the NVH performance of the whole vehicle.

[0016] 2. The first mounting bracket and the second mounting bracket of the radiator of the present application are L-shaped structures, and the left front swing arm mounting bracket, the left rear swing arm mounting bracket, the right front swing arm mounting bracket, the right rear swing arm mounting bracket, the front suspension bracket, the right suspension bracket and the rear suspension bracket are all provided with flanges; the present application reduces the elongation length of each bracket and increases the bending degree of the radiator bracket and the flange structure, which can further improve the dynamic stiffness of each bracket and improve the vehicle NVH performance.

[0017] 3. The present application increases the outer diameter of the four pipe beams, making the square frame structure formed by the four pipe beams stronger, thereby greatly improving the bending and torsion modes of the front subframe and the dynamic stiffness of the mounting brackets on the corresponding pipe beams, and further improving the vehicle NVH performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following further describes in detail the specific embodiments of the present invention with reference to the drawings, wherein:

[0019] Figure 1 is a schematic structural diagram of the front subframe structure of the present invention.

[0020] The markings in the above figures are all:

[0021] The markings in the figure are:

[0022] 1. Front subframe

[0023] 2. Front cross member

[0024] 3. Rear cross member

[0025] 4. Left longitudinal beam

[0026] 5. Right longitudinal beam

[0027] 6. Left front mounting bracket, 601. Right front mounting bracket, 602. Left rear mounting bracket, 603. Right rear mounting bracket

[0028] 7. First mounting bracket of radiator, 701. Second mounting bracket of radiator

[0029] 8. Left front swing arm mounting bracket, 801. Left rear swing arm mounting bracket, 802. Right front swing arm mounting bracket, 803. Right rear swing arm mounting bracket, 804. Connecting plate, 805. Second flange, 806. Third flange

[0030] 9. Front suspension bracket, 901. Right suspension bracket, 902. Rear suspension bracket, 903. Side plate, 904. First flange. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] The following is a more detailed description of the specific implementation of the present utility model with reference to the accompanying drawings through the description of embodiments, aiming to help those skilled in the art have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present utility model, and contribute to its implementation.

[0032] Figure 1 The shown front subframe structure includes a front subframe 1; a body mounting structure, a radiator support structure, a mounting structure for a suspension, and a mounting structure for a swing arm are respectively provided on the front subframe 1.

[0033] The layout positions of the body mounting structure, the radiator support structure, the mounting structure for a suspension, and the mounting structure for a swing arm on the front subframe 1 are improved to increase the dynamic stiffness of each mounting point; the body mounting structure, the radiator support structure, the mounting structure for a suspension, and the mounting structure for a swing arm are all arranged near the connection points of each cross beam and longitudinal beam, which can greatly improve the dynamic stiffness of the front subframe 1, not only effectively improving the NVH performance of the front subframe 1 assembly, but also greatly reducing the cost and weight, and can significantly improve the NVH performance of the whole vehicle.

[0034] The front subframe 1 includes a front cross beam 2 and a rear cross beam 3; a left longitudinal beam 4 and a right longitudinal beam 5 are respectively provided between the front cross beam 2 and the rear cross beam 3; the left longitudinal beam 4 and the right longitudinal beam 5 are respectively arranged at both ends of the front cross beam 2.

[0035] The front cross beam 2, the rear cross beam 3, the left longitudinal beam 4 and the right longitudinal beam 5 form a small assembly through the connection method of CO2 shielded welding, and a square structure is formed among the four; at the same time, the outer diameters of the front cross beam 2, the rear cross beam 3, the left longitudinal beam 4 and the right longitudinal beam 5 are increased, improving the bending and torsional modes of the front subframe 1, and at the same time improving the dynamic stiffness of the mounting brackets and mounting points on the front subframe 1.

[0036] The body mounting structure includes a left front mounting bracket 6 and a left rear mounting bracket 602; the left front mounting bracket 6 and the left rear mounting bracket 602 are respectively arranged at both ends of the left longitudinal beam 4; a right front mounting bracket 601 and a right rear mounting bracket 603 are respectively arranged at both ends of the right longitudinal beam 5.

[0037] The left front mounting bracket 6, the right front mounting bracket 601, the left rear mounting bracket 602 and the right rear mounting bracket 603 are respectively arranged at the four connection points of the cross beam and the longitudinal beam; the cross sections of the left front mounting bracket 6 and the right front mounting bracket 601 are both L-shaped structures, and the end parts of the left front mounting bracket 6 and the right front mounting bracket 601 respectively extend in the direction away from the front cross beam 2; the left rear mounting bracket 602 and the right rear mounting bracket 603 are both square structures, and the left rear mounting bracket 602 and the right rear mounting bracket 603 both extend to the side away from the left longitudinal beam 4 and the right longitudinal beam 5.

[0038] The radiator support structure includes a first radiator mounting bracket 7 and a second radiator mounting bracket 701; the first radiator mounting bracket 7 is provided at one end of the front crossbeam 2 close to the left front mounting bracket 6; the second radiator mounting bracket 701 is provided at one end of the front crossbeam 2 close to the right front mounting bracket 601.

[0039] Both the first radiator mounting bracket 7 and the second radiator mounting bracket 701 are L-shaped plates; the first radiator mounting bracket 7 is arranged close to the left longitudinal beam 4; the second radiator mounting bracket 701 is arranged close to the right longitudinal beam 5.

[0040] The swing arm mounting structure includes a left rear swing arm mounting bracket 801 and a right rear swing arm mounting bracket 803; the left rear swing arm mounting bracket 801 and the right rear swing arm mounting bracket 803 are respectively provided at both ends of the rear crossbeam 3; one end of the left longitudinal beam 4 close to the left rear swing arm mounting bracket 801 is provided with a left front swing arm mounting bracket 8; one end of the right longitudinal beam 5 close to the right rear swing arm mounting bracket 803 is provided with a right front swing arm mounting bracket 802.

[0041] The left rear swing arm mounting bracket 801 is provided on one side of the connection point between the left longitudinal beam 4 and the rear crossbeam 3; the right rear swing arm mounting bracket 803 is provided on one side of the connection point between the right longitudinal beam 5 and the rear crossbeam 3; the left front swing arm mounting bracket 8 is arranged close to the connection point between the left longitudinal beam 4 and the rear crossbeam 3; the right front swing arm mounting bracket 802 is arranged close to the connection point between the right longitudinal beam 5 and the rear crossbeam 3.

[0042] The suspension mounting structure includes a front suspension bracket 9, a right suspension bracket 901 and a rear suspension bracket 902; the front suspension bracket 9 is provided at one end of the front crossbeam 2 close to the first radiator mounting bracket 7; the right suspension bracket 901 is provided at one end of the right longitudinal beam 5 close to the right front mounting bracket 601; the rear suspension bracket 902 is provided in the middle of the rear crossbeam 3.

[0043] The front suspension bracket 9 is arranged close to the connection point between the left longitudinal beam 4 and the front crossbeam 2; the right suspension bracket 901 is arranged close to the connection point between the right longitudinal beam 5 and the front crossbeam 2.

[0044] The front suspension bracket 9, the right suspension bracket 901 and the rear suspension bracket 902 all include a side plate 903; a first flanging 904 is provided on the side plate 903.

[0045] Shortening the cantilever lengths of the front suspension bracket 9, the right suspension bracket 901 and the rear suspension bracket 902 and increasing the bending degree of the first flanging 904 can effectively increase the dynamic stiffness of the front suspension bracket 9, the right suspension bracket 901 and the rear suspension bracket 902.

[0046] The cross-sections of the left front mounting bracket 6, the right front mounting bracket 601, the first radiator mounting bracket 7, and the second radiator mounting bracket 701 are all L-shaped; both the left rear swing arm mounting bracket 801 and the right rear swing arm mounting bracket 803 include a connecting plate 804; a second flanging 805 is provided on the connecting plate 804; and a third flanging 806 is provided on both the left front swing arm mounting bracket 8 and the right front swing arm mounting bracket 802.

[0047] Shortening the cantilever lengths of the first radiator mounting bracket 7, the second radiator mounting bracket 701, the left front swing arm mounting bracket 8, the left rear swing arm mounting bracket 801, the right front swing arm mounting bracket 802, and the right rear swing arm mounting bracket 803, and increasing the curvatures of the first radiator mounting bracket 7, the second radiator mounting bracket 701, the second flanging 805, and the third flanging 806 can effectively enhance the dynamic stiffness of the first radiator mounting bracket 7, the second radiator mounting bracket 701, the left front swing arm mounting bracket 8, the left rear swing arm mounting bracket 801, the right front swing arm mounting bracket 802, and the right rear swing arm mounting bracket 803.

[0048] The specific working process of the present utility model is as follows:

[0049] The left front mounting bracket 6, the right front mounting bracket 601, the first radiator mounting bracket 7, and the second radiator mounting bracket 701 are all processed into L-shaped structures; a first flanging 904 is processed on the side plates 903 of the front mounting bracket 9, the right mounting bracket 901, and the rear mounting bracket 902; a second flanging 805 is processed on the left rear swing arm mounting bracket 801 and the right rear swing arm mounting bracket 803; and a third flanging 806 is processed on the left front swing arm mounting bracket 8 and the right front swing arm mounting bracket 802.

[0050] The front cross member 2, the rear cross member 3, the left longitudinal beam 4, and the right longitudinal beam 5 are formed into a small assembly by the connection method of CO2 shielded welding, and a square structure body is formed among the four; the left front mounting bracket 6, the right front mounting bracket 601, the left rear mounting bracket 602, and the right rear mounting bracket 603 are connected at the connection points of each longitudinal beam and cross beam; the first radiator mounting bracket 7, the second radiator mounting bracket 701, the left front swing arm mounting bracket 8, the left rear swing arm mounting bracket 801, the right front swing arm mounting bracket 802, the right rear swing arm mounting bracket 803, the front mounting bracket 9, and the right mounting bracket 901 are all arranged close to the connection points of each longitudinal beam and cross beam.

[0051] The above has made an exemplary description of the present utility model in conjunction with the drawings. Obviously, the specific implementation of the present utility model is not limited by the above methods. As long as various non-substantive improvements are made by adopting the method concept and technical solution of the present utility model; or without improvement, the above concept and technical solution of the present utility model are directly applied to other occasions, all are within the protection scope of the present utility model.

Claims

1. A front subframe structure, characterized in that: Including a front subframe (1); the front subframe (1) is respectively provided with a body mounting structure, a radiator support structure, a mount mounting structure and a swing arm mounting structure.

2. The front subframe structure according to claim 1, characterized in that: The front subframe (1) includes a front crossmember (2) and a rear crossmember (3); a left longitudinal beam (4) and a right longitudinal beam (5) are respectively arranged between the front crossmember (2) and the rear crossmember (3); the left longitudinal beam (4) and the right longitudinal beam (5) are respectively arranged at both ends of the front crossmember (2).

3. The front subframe structure according to claim 2, wherein: The body mounting structure includes a left front mounting bracket (6) and a left rear mounting bracket (602); the left front mounting bracket (6) and the left rear mounting bracket (602) are respectively arranged at both ends of the left longitudinal beam (4); a right front mounting bracket (601) and a right rear mounting bracket (603) are respectively arranged at both ends of the right longitudinal beam (5).

4. A front subframe structure according to claim 3, characterized in that: The radiator support structure includes a first radiator mounting bracket (7) and a second radiator mounting bracket (701); the first radiator mounting bracket (7) is arranged at one end of the front crossmember (2) close to the left front mounting bracket (6); the second radiator mounting bracket (701) is arranged at one end of the front crossmember (2) close to the right front mounting bracket (601).

5. The front subframe structure according to claim 4, characterized in that: The swing arm mounting structure includes a left rear swing arm mounting bracket (801) and a right rear swing arm mounting bracket (803); the left rear swing arm mounting bracket (801) and the right rear swing arm mounting bracket (803) are respectively arranged at both ends of the rear crossmember (3); a left front swing arm mounting bracket (8) is arranged at one end of the left longitudinal beam (4) close to the left rear swing arm mounting bracket (801); a right front swing arm mounting bracket (802) is arranged at one end of the right longitudinal beam (5) close to the right rear swing arm mounting bracket (803).

6. A front subframe structure according to claim 5, characterized in that: The mount mounting structure includes a front mount bracket (9), a right mount bracket (901) and a rear mount bracket (902); the front mount bracket (9) is arranged at one end of the front crossmember (2) close to the first radiator mounting bracket (7); the right mount bracket (901) is arranged at one end of the right longitudinal beam (5) close to the right front mounting bracket (601); the rear mount bracket (902) is arranged in the middle of the rear crossmember (3).

7. A front subframe structure according to claim 6, characterized in that: The front mount bracket (9), the right mount bracket (901) and the rear mount bracket (902) all include a side plate (903); a first flanging (904) is arranged on the side plate (903).

8. A front subframe structure according to any one of claims 5-7, characterized in that: The cross-sections of the left front mounting bracket (6), the right front mounting bracket (601), the first radiator mounting bracket (7) and the second radiator mounting bracket (701) are all L-shaped; the left rear swing arm mounting bracket (801) and the right rear swing arm mounting bracket (803) both include a connecting plate (804); a second flanging (805) is arranged on the connecting plate (804); a third flanging (806) is arranged on the left front swing arm mounting bracket (8) and the right front swing arm mounting bracket (802).

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