Front auxiliary frame rear swing arm bush support and vehicle

Abstract

The utility model discloses a front subframe rear swing arm bushing support, which comprises a rear sleeve, an upper support and a lower support, a bushing is inserted into the rear sleeve, the upper support and the lower support are connected with the rear sleeve, the rear sleeve is positioned between the upper support and the lower support, and the rear sleeve, the upper support and the lower support are made of QSTE420TM. According to the front auxiliary frame rear swing arm lining support, on the premise that the NVH performance index is met, the light weight effect can be achieved, and the light weight requirement is met. The utility model further discloses a vehicle.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobiles. Specifically, the utility model relates to a rear swing arm bushing bracket of a front subframe and a vehicle. Background Art

[0002] The road noise problem of new energy vehicles is particularly prominent compared with traditional fuel vehicles. As an important system on the transmission path of road noise structure noise, the NVH performance of the front suspension directly affects the level of the vehicle's road noise. At the same time, most new energy vehicle front suspensions adopt the MacPherson structure. The excitation of the road surface is concentratedly transmitted to the front subframe through the swing arm, and then transmitted to the vehicle interior through the front subframe, generating relatively large road noise. As an important path point, the swing arm bracket with good NVH performance can attenuate most of the excitation transmitted from the road surface, thereby improving the NVH performance of the whole vehicle.

[0003] As Figure 2 shown, the material property of the existing rear swing arm bushing bracket of the front subframe is aluminum alloy, which is integrally cast. Although it can meet the requirements of stiffness and strength, it has high cost and large weight and cannot meet the requirements of lightweight.

[0004] Chinese Patent with application number 201810137124.2 discloses a vehicle front subframe structure, including a left steering gear sleeve, a left reinforcing plate, a mounting bracket, a left front swing arm bracket, a left mounting bracket of the front subframe, a left front swing arm reinforcing plate, a left bushing, a left rear swing arm bracket reinforcing plate, a left rear swing arm bracket, a subframe upper plate, a right rear swing arm bracket, a right rear swing arm bracket reinforcing plate, a right bushing, a right front swing arm reinforcing plate, a right mounting bracket of the front subframe, a right front swing arm bracket, a mounting bracket reinforcing plate, a right steering gear sleeve, a right reinforcing plate, a rear reinforcing plate of the front subframe and a subframe lower plate. The subframe upper plate and the subframe lower plate are fixedly connected by welding. The mounting bracket, the left rear swing arm bracket and the right rear swing arm bracket are all fixedly connected with the subframe upper plate by welding. The mounting points where the "ingot-shaped" front subframe is connected to the vehicle body are separated from the mounting points of the swing arm large bushing, being two mounting points, which greatly reduces the force on each mounting point.

[0005] It is desired to provide an improved rear swing arm bushing bracket of the front subframe, especially regarding how to meet the requirements of lightweight. Summary of the Utility Model

[0006] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a rear swing arm bushing bracket of the front subframe, aiming to meet the requirements of lightweight.

[0007] To achieve the above object, the technical solution adopted by the present utility model is as follows: a rear swing arm bushing bracket for a front subframe, which includes a rear sleeve for inserting a bushing, and an upper bracket and a lower bracket connected to the rear sleeve. The rear sleeve is located between the upper bracket and the lower bracket, and the materials of the rear sleeve, the upper bracket and the lower bracket are QSTE420TM.

[0008] The upper bracket and the lower bracket extend towards the same side of the rear sleeve.

[0009] A first mounting hole is provided on the upper bracket, and a plurality of first mounting holes are provided.

[0010] A second mounting hole is provided on the lower bracket, and a plurality of second mounting holes are provided.

[0011] A positioning block is provided on the lower bracket, and a third mounting hole is provided on the positioning block.

[0012] The present utility model also provides a vehicle, which includes the rear swing arm bushing bracket for the front subframe described above.

[0013] The rear swing arm bushing bracket for the front subframe of the present utility model can achieve the effect of light weight and meet the requirements of light weight on the premise of meeting the NVH performance index. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] This specification includes the following drawings, and the shown contents are respectively:

[0015] Figure 1 is a schematic structural diagram of the rear swing arm bushing bracket for the front subframe of the present utility model;

[0016] Figure 2 is a schematic structural diagram of a front subframe of the prior art;

[0017] The marks in the figure are: 1, rear sleeve; 2, upper bracket; 3, lower bracket; 4, first mounting hole; 5, second mounting hole; 6, positioning block; 7, rear swing arm; 8, rear swing arm bushing bracket; 9, front subframe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following is a more detailed description of the specific embodiments of the present utility model with reference to the drawings, aiming to help those skilled in the art have a more complete, accurate and in-depth understanding of the concept and technical solution of the present utility model, and contribute to its implementation.

[0019] It should be noted that in the following embodiments, the "first", "second" and "third" do not represent an absolute distinction relationship in structure and / or function, nor do they represent the execution order, but are only for the convenience of description.

[0020] As Figure 1As shown in the figure, the present utility model provides a rear swing arm bushing bracket for a front subframe, which includes a rear sleeve 1 for inserting a bushing, and an upper bracket 2 and a lower bracket 3 connected to the rear sleeve 1. The rear sleeve 1 is located between the upper bracket 2 and the lower bracket 3. The materials of the rear sleeve 1, the upper bracket 2, and the lower bracket 3 are QSTE420TM.

[0021] Specifically, as Figure 1 shown in the figure, the upper bracket 2 and the lower bracket 3 extend towards the same side of the rear sleeve 1. The length directions of the upper bracket 2 and the lower bracket 3 are parallel. One end in the length direction of the upper bracket 2 is welded to the rear sleeve 1, and the other end in the length direction of the upper bracket 2 is used to connect to the front subframe. One end in the length direction of the lower bracket 3 is welded to the rear sleeve 1, and the other end in the length direction of the lower bracket 3 is used to connect to the front subframe.

[0022] As Figure 1 shown in the figure, a first mounting hole 4 is provided on the upper bracket 2, and a plurality of first mounting holes 4 are provided. The upper bracket 2 is connected to the front subframe by bolts, and the first mounting hole 4 is for the bolts to pass through.

[0023] As Figure 1 shown in the figure, a second mounting hole 5 is provided on the lower bracket 3, and a plurality of second mounting holes 5 are provided. The upper bracket 2 is connected to the front subframe by bolts, and the second mounting hole 5 is for the bolts to pass through.

[0024] As Figure 1 shown in the figure, positioning blocks 6 are provided on the lower bracket 3, and a plurality of positioning blocks 6 are provided. Third mounting holes are provided on the positioning blocks 6, and the third mounting holes are for the bolts to pass through. Positioning holes for inserting the positioning blocks 6 are provided on the front subframe. Through the cooperation of the positioning holes and the positioning blocks 6, accurate positioning of the lower frame on the front subframe during assembly is achieved, facilitating assembly.

[0025] As Figure 1 shown in the figure, in this embodiment, two first mounting holes 4 are provided on the upper bracket 2, two second mounting holes 5 and two positioning blocks 6 are provided on the lower bracket 3. The two first mounting holes 4 are on the same straight line parallel to the axis of the rear sleeve 1, the two second mounting holes 5 are on the same straight line parallel to the axis of the rear sleeve 1, and the two positioning blocks 6 are on the same straight line parallel to the axis of the rear sleeve 1.

[0026] In this embodiment, the wall thickness of the rear sleeve 1 is 3.5 mm, and the wall thicknesses of the upper bracket 2 and the lower bracket 3 are also 3.5 mm. QSTE420TM is a cold-formed hot-rolled structural steel plate. The bushing bracket made of QSTE420TM steel plate with a thickness of 3.5 mm has high strength, large stiffness, good plasticity, excellent welding performance and good fatigue resistance. Compared with the aluminum bracket, it can improve the NVH performance index, and it is light in weight. Compared with the aluminum bracket, the weight can be reduced by 15%, meeting the lightweight requirement. This kind of bushing bracket has a long service life, is integrally formed, has a simple process and is convenient to install, which can greatly reduce the production cost.

[0027] After CAE analysis and verification, the dynamic stiffness of the rear swing arm attachment point of the front subframe with the front subframe rear swing arm bushing bracket of the above structure installed on it is increased by 13%, and at the same time the weight is lightened by 15%, effectively improving the NVH performance of the front suspension and effectively achieving the lightweight purpose, which can improve the NVH performance of the whole vehicle.

[0028] The present utility model also provides a vehicle, including the front subframe rear swing arm bushing bracket of the above structure. The vehicle is a new energy vehicle, and the front subframe rear swing arm bushing bracket can refer to Figure 1 , which will not be elaborated here. Since the vehicle of the present utility model includes the front subframe rear swing arm bushing bracket in the above embodiment, it has all the advantages of the above front subframe rear swing arm bushing bracket.

[0029] The above has made an exemplary description of the present utility model in conjunction with the accompanying 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, they are all within the protection scope of the present utility model.

Claims

1. Rear subframe trailing arm bushing bracket, characterized in that: It includes a rear sleeve for inserting a bushing, as well as an upper bracket and a lower bracket connected to the rear sleeve. The rear sleeve is located between the upper bracket and the lower bracket, and the materials of the rear sleeve, the upper bracket and the lower bracket are QSTE420TM.

2. The rear swing arm bushing bracket of the front subframe according to claim 1, characterized in that: The upper bracket and the lower bracket extend towards the same side of the rear sleeve.

3. The rear swing arm bushing bracket of the front subframe according to claim 1, characterized in that: A first mounting hole is provided on the upper bracket, and multiple first mounting holes are provided.

4. The rear swing arm bushing bracket of the front subframe according to any one of claims 1 to 3, characterized in that: A second mounting hole is provided on the lower bracket, and multiple second mounting holes are provided.

5. The rear swing arm bushing bracket of the front subframe according to any one of claims 1 to 3, characterized in that: A positioning block is provided on the lower bracket, and a third mounting hole is provided on the positioning block.

6. A vehicle, characterized in that: It includes the front subframe rear swing arm bushing bracket according to any one of claims 1 to 5.

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