CN209852003U - An extruded aluminum profile lower control arm - Google Patents

Abstract

The utility model relates to a control arm under extrusion aluminium alloy, including control arm main part down, the main part on be provided with the bush mounting hole with sub vehicle frame installation side, be provided with local bulge structure in the main part that fixed ear, shock absorber mounted position correspond with knuckle installation side, be provided with first punching press hole in the main part that cushion installation cooperation position corresponds under the spring and be used for installing the cushion, be provided with second punching press hole in the main part that cushion corresponds under the spring and be used for the installation location, fixed ear between be provided with straight section structure, the section structure of main part be "pi" font. The utility model discloses a lower control arm has all promoted 50% than prior art rigidity and bucking stress, has improved the intensity and the rigidity of lower control arm, the cost is reduced.

Description

An extruded aluminum profile lower control arm

technical field

The utility model relates to the field of automobile suspension parts, in particular to an extruded aluminum profile lower control arm.

Background technique

At present, the lower control arm of the rear suspension of the passenger car, especially the lower control arm of the rear suspension of the high-load passenger car, is mostly made by the following schemes:

1. A hollow structure formed by stamping and welding of steel plates;

2. Solid or hollow structure cast by aluminum alloy;

3. Solid structure made of aluminum alloy forging;

Among the above solutions, although the cost of a single piece is low in the first solution, the overall weight is larger and the mold cost is higher; the second solution has a certain weight reduction effect compared with the first solution, but the cost is high and the yield due to casting defects is low. ; Scheme 3 has a dense metallographic structure and high strength, but is limited by the forging process, and cannot realize the manufacture of a lower control arm with a complex shape, and the cost is high.

SUMMARY OF THE INVENTION

The purpose of the utility model is to provide a lower control arm of extruded aluminum profile, the rigidity and buckling stress are increased by 50% and the buckling stress is increased by 50% through the π-shaped structural cross section, which improves the strength and rigidity of the lower control arm and reduces the cost.

The object of the present invention is achieved through the following technical solutions:

An extruded aluminum profile lower control arm, including a lower control arm main body, the main body is provided with a bushing mounting hole 1 on the mounting side of the subframe, and a fixing ear 5 is provided on the mounting side of the steering knuckle, and the shock absorber is mounted The main body corresponding to the position is provided with a partial pressure protrusion structure 4, the main body corresponding to the installation and matching position of the under-spring cushion is provided with a first punching hole 2 for installing the cushion, and the main body corresponding to the under-spring cushion is provided with a second punching hole. The hole 3 is used for installation and positioning, a straight segment structure 6 is arranged between the fixing ears 5, and the cross-sectional structure of the main body is a "π" shape.

The beneficial effects are as follows:

The lower control arm structure provided by the utility model is different from the lower control arm made of aluminum profiles in the prior art, and has the advantages of high structural strength, low production cost but high efficiency, and high product yield. %, the buckling stress is increased by 50%, and the cost is reduced by 5%, and the extrusion aluminum extrusion forming process is adopted, and the selection of materials brings the technical effect of reducing the weight by 30%.

Description of drawings

Fig. 1 is the structural schematic diagram of the lower control arm of the extruded aluminum profile of the present invention;

2 is a side view of the lower control arm of the extruded aluminum profile of the present invention;

3 is a top view of the lower control arm of the extruded aluminum profile of the present invention;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 1 .

Detailed ways

The present utility model will be described in further detail below with reference to the accompanying drawings. In different drawings, the same components are always represented by the same reference numerals, and the components are usually described only once.

As shown in Figure 1, the present invention provides an extruded aluminum profile lower control arm, which is suitable for a multi-link independent rear suspension system, including a lower control arm main body, and the main body is arranged on the installation side of the sub-frame. There is a bushing installation hole 1, a fixed ear 5 is provided on the installation side of the steering knuckle, the main body corresponding to the installation position of the shock absorber is provided with a partial pressure convex structure 4, and the main body corresponding to the installation position of the under-spring cushion is provided with a first one. The punching hole 2 is used for installing the cushion, the main body corresponding to the under-spring cushion is provided with a second punching hole 3 for installation and positioning, and a straight section structure 6 is arranged between the fixing ears 5. A-A section structure is "π" shape.

The lower control arm of the utility model adopts an extruded aluminum profile punching structure, and is processed and formed through the processes of profile extrusion, fixed-length sawing, contour punching, flanging, bending, punching and the like. The lower control arm may be configured with a coil spring or an air spring, a conventional shock absorber or a shock absorber with continuously adjustable damping force. The lower control arm can increase or decrease the thickness of the π-shaped section to meet the requirements of different bearing capacities of the modular platform vehicle. The lower control arm is provided with a straight section structure between the two mounting holes of the fixing lugs on the same side. By adjusting the length of the straight section, the change requirement of the wheel base on one side of the modular vehicle within 25mm is realized.

The installation process of the utility model is as follows: the installation side with the sub-frame is the bushing installation hole 1 structure, the aluminum sleeve is press-fitted at the punching position of the profile body, and the flange is fixed; the installation side with the steering knuckle is the fixing ear 5 The structure is formed by partially pressing and punching the profile body, and this structure is connected with the steering knuckle bushing, which is beneficial to reduce the fastening stress. The partial embossing structure 4 is the installation position of the shock absorber. The punching hole 2 is the installation and matching position of the under-spring cushion, and the punching hole 3 is the installation and positioning hole of the under-spring cushion.

Claims (1)

1. The utility model provides a control arm under extruded aluminum profile, includes control arm main part down, the main part on with sub vehicle frame installation side be provided with bush mounting hole (1), be provided with fixed ear (5) with knuckle installation side, be provided with local bulge structure (4) in the main part that shock absorber mounted position corresponds, its characterized in that: be provided with first punching press hole (2) in the main part that cushion installation cooperation position corresponds under the spring and be used for installing the cushion, be provided with second punching press hole (3) in the main part that the cushion corresponds under the spring and be used for the installation location, fixed ear (5) between be provided with straight section structure (6), the section structure of main part be "pi" font.