High-load-bearing lightweight rear lower control arm

Abstract

The utility model discloses a high-bearing-capacity light-weight rear lower control arm, and belongs to the technical field of automobile parts. The device mainly comprises a main body, one end of the main body is fixedly provided with a steering ball pin connecting assembly, and the other end of the main body is fixedly provided with an auxiliary frame composite bush connecting assembly; a stabilizer bar connecting rod mounting seat is fixed on one side of the main body and is positioned between the steering ball pin connecting component and the auxiliary frame composite bushing connecting component; wherein a weight reduction cavity is formed in the main body. According to the utility model, the aluminum-magnesium alloy is used for casting the integrated box body structure, so that the size precision of parts is high and the number of the parts is small; and through the arranged weight reduction structure, the purpose of light weight is achieved, and meanwhile the bearing capacity is improved. The utility model is mainly used for optimizing the structure of the rear lower control arm of the vehicle.

Description

Technical Field

[0009]

[0001] The utility model belongs to the technical field of automotive parts, and more particularly, to a high-load lightweight rear lower control arm. Background Art

[0002] The rear lower control arm in the traditional four-link or five-link suspension system is of a sheet metal stamping structure, which is generally formed by welding multiple sheet metal stamping parts. Such a rear lower control arm generally has a problem of poor structural accuracy due to welding deformation. In addition, one end of the rear lower control arm is connected to the steering knuckle and the other end is connected to the subframe. As an important load-bearing component, to ensure its structural stiffness and strength, only the thickness of the sheet metal parts can be increased, resulting in a heavy mass and high cost of the rear lower control arm.

[0003] The utility model patent with the authorization公告号为CN 211567575 U provides an automotive rear lower control arm, which designs the support bracket as a "U" - shaped structure and improves the stiffness and strength by adding flanges at the structural edges. However, its design still does not deviate from the idea of sheet metal stamping and welding, and still uses the method of adding welding reinforcement plates to ensure the structural strength. Its weight reduction effect is not obvious and the problem of poor welding accuracy cannot be avoided. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a high-load lightweight rear lower control arm, which uses an integrally cast aluminum-magnesium alloy box structure with high dimensional accuracy of parts and few parts. And through the provided weight reduction structure, while achieving the purpose of lightweight, its bearing capacity is also improved.

[0005] A high-load lightweight rear lower control arm includes a main body. One end of the main body is fixed with a steering ball joint connection component, and the other end is fixed with a subframe composite bushing connection component. One side of the main body is fixed with a stabilizer bar connecting rod mounting seat, which is located between the steering ball joint connection component and the subframe composite bushing connection component. Among them, a weight reduction cavity is provided inside the main body.

[0006] Preferably, on the side of the main body facing away from the stabilizer bar connecting rod mounting seat, a first weight reduction groove and a second weight reduction groove are provided, which are adjacent to each other and communicate with the weight reduction cavity.​​​​​​​​​​​Compared with the prior art, the utility model has the beneficial effects that:

[0011] 1, use cast integral structure, the size precision of spare part is high, and the number of spare parts is few.

[0012] Use aluminum magnesium alloy lightweight material to reduce weight, and the whole rear lower control arm body adopts box body structure, the lightweight structure design of the weight reduction groove structure is set in the bottom position, reach high bearing lightweight purpose.

[0013] 2, no welding structure, can effectively avoid the stress concentration and welding deformation brought by welding structure, improve the strength of rear lower control arm to meet the demand of large bearing.

[0014] 3, use aluminum magnesium alloy lightweight material to reduce weight, and the whole rear lower control arm body adopts box body structure, the lightweight structure design of the weight reduction groove structure is set in the bottom position, reach high bearing lightweight purpose. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the front view of the utility model;

[0016] Figure 2 It is the rear view of the utility model.

[0017] In the drawing, 100, main body;101, weight reduction cavity;102, first weight reduction groove;103, second weight reduction groove;110, steering ball pin connecting assembly;120, auxiliary frame composite bush connecting assembly;130, stabilizer bar connecting rod mounting seat;140, coil spring mounting seat;141, boss;142, recess;143, sink groove. DETAILED DESCRIPTION

[0018] The utility model will be further explained in combination with the drawings:

[0019] The orientation terms involved in the paragraph of detailed description are only for the convenience of the person skilled in the art to understand the technical scheme recorded in the application according to the visual orientation shown in the drawing. Except for the explicit provisions and limitations, the terms such as "set", "install", "connect" should be understood broadly, and for the person skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0020] For example, Figure 1 And Figure 2As shown, a high load-bearing lightweight rear lower control arm, comprising a main body 100, one end of the main body 100 is fixed with a steering ball pin connecting assembly 110, the other end is fixed with a subframe composite bush connecting assembly 120; One side of the main body 100 is fixed with a stabilizer bar connecting rod mounting seat 130, located between the steering ball pin connecting assembly 110 and the subframe composite bush connecting assembly 120; Wherein, the main body 100 is provided with a weight reduction cavity 101.

[0021] Optionally, the main body 100 is integrally formed by using A LSi10MnMg (a high-toughness die-casting aluminum alloy material) material. In this way, A LSi10MnMg not only has good die-casting performance and mechanical properties, but also has relatively low weight compared to other materials such as iron, steel, etc., which is beneficial to reduce the unsprung mass and improve vehicle comfort.

[0022] As shown in Figure 1 and Figure 2 , the main body 100 is provided with a plurality of weight reduction grooves on the side away from the stabilizer bar connecting rod mounting seat 130. In this way, by cooperating the weight reduction grooves with the weight reduction cavity 101, the overall weight of the entire component can be effectively reduced, thereby achieving the purpose of lightweight.

[0023] As shown in Figure 2 , the weight reduction grooves include a first weight reduction groove 102 and a second weight reduction groove 103, which are adjacently arranged and communicated with the weight reduction cavity 101. Optionally, the openings of the first weight reduction groove 102 and / or the second weight reduction groove 103 are designed in different geometric shapes according to the overall shape of the main body 100. Through topological optimization, the structure follows the principle of minimum force flow path, and unnecessary materials are removed by hole processing in the low-density area, so that the material distribution is more reasonable and the force transmission is more uniform. While achieving lightweight, it also ensures the lightness and rigidity of the structure.

[0024] As shown in Figure 1 , the main body 100 is provided with a coil spring mounting seat 140 on one side of the stabilizer bar connecting rod mounting seat 130.

[0025] As shown in Figure 1 , the coil spring mounting seat 140 includes a boss 141 and a groove 142, the groove 142 is recessed towards the weight reduction cavity 101, and the center position is provided with the boss 141. In this way, by cooperating the boss 141 with the groove 142, the coil spring can be prevented from being pulled out of the main body 100 structure under harsh working conditions, effectively improving the working stability of the coil spring, and also improving the service life of the coil spring.

[0026] As shown in Figure 1As shown, the recess 142 is provided with a sunken groove 143. In this way, the sunken groove 143 can not only improve the structural strength of the main body 100, but also improve the adhesion with the coil spring, further improve the working stability of the coil spring, avoid disengagement from the main body 100, and ensure the safety of the vehicle driving.

[0027] Finally, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A high load bearing lightweight rear lower control arm comprising a main body (100), characterized in that: One end of the main body (100) is fixed with a steering ball pin connecting assembly (110), and the other end is fixed with a subframe composite bush connecting assembly (120); One side of the main body (100) is fixed with a stabilizer bar connecting rod mounting seat (130), which is located between the steering ball pin connecting assembly (110) and the subframe composite bush connecting assembly (120); Wherein, the main body (100) is provided with a weight reduction cavity (101).

2. The high load carrying lightweight rear lower control arm of claim 1, wherein: The side of the main body (100) away from the stabilizer bar connecting rod mounting seat (130) is provided with a first weight reduction groove (102) and a second weight reduction groove (103), which are adjacent to each other and communicate with the weight reduction cavity (101).

3. The high load carrying lightweight rear lower control arm of claim 1, wherein: One side of the main body (100) is provided with a coil spring mounting seat (140) located on one side of the stabilizer bar connecting rod mounting seat (130).

4. The high load carrying lightweight rear lower control arm of claim 3, wherein: The coil spring mounting seat (140) comprises a boss (141) and a groove (142), the groove (142) is recessed towards the weight reduction cavity (101), and the center position is provided with the boss (141).

5. The high load carrying lightweight rear lower control arm of claim 4, wherein: The groove (142) is provided with a sunken groove (143).

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