一种车辆轻量化下控制臂总成结构
By designing an aluminum alloy lower control arm assembly with a triangular overlapping structure, the problem of limited lightweighting in existing technologies has been solved, achieving greater space utilization and higher weight reduction, which is suitable for battery pack layout and collision protection in pure electric vehicles.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- MAGNA WEILAN NEW ENERGY VEHICLE TECH (ZHENJIANG) CO LTD
- Filing Date
- 2025-07-14
- Publication Date
- 2026-07-17
AI Technical Summary
The existing lower control arm assembly is a solid forged aluminum structure, which limits its lightweighting, and the comfort bushing occupies space behind the axle, affecting the battery pack layout and collision clearance.
Design a lightweight lower control arm assembly with a triangular overlapping structure. The assembly is made of aluminum alloy. The control arm body is connected by three "T"-shaped walls with a hollow design in the middle. The comfort bushing is arranged in front of the shaft. The ball pin assembly is located at the corner of the shock absorber bushing. The shock absorber, comfort bushing and handling bushing are press-fitted onto the control arm body.
Optimizing the spatial layout and reserving space behind the axle reduces weight by 20%-25%, which is beneficial for the placement of large battery packs and provides space for collisions, thus improving the degree of lightweighting.
Smart Images
Figure CN224510787U_ABST
Abstract
Claims
1. A vehicle lightweight lower control arm assembly structure, characterized by: The system includes a lower control arm body (1), a shock absorber bushing (2), a comfort bushing (3), a handling bushing (4), and a ball pin assembly (5). The lower control arm body (1) has a triangular overlapping structure. The shock absorber bushing (2), the comfort bushing (3), and the handling bushing (4) are all press-fitted onto the lower control arm body (1) and are respectively located at the three corners of the lower control arm body (1). The ball pin assembly (5) is located at the corner where the shock absorber bushing (2) is located. The comfort bushing (3) is located at the front. The three areas in the lower control arm body (1) that connect the shock absorber bushing (2), the comfort bushing (3), and the handling bushing (4) are composed of three "T" shaped walls. The lower control arm body (1) adopts a hollow design in the middle to form a lightweight design.
2. The vehicle light-weighting lower control arm assembly structure of claim 1, wherein: The ball pin assembly (5) includes a ball pin plastic seat (501), a ball pin mounting plate (502), a dust cover spring clamp (503), a dust cover (504), and a ball pin (505). The ball pin (505) is installed in the ball pin plastic seat (501) through the ball pin mounting plate (502). The ball pin plastic seat (501) is installed in the ball seat structure (115). The ball seat structure (115) is connected to the lower control arm body (1) as a whole. The ball pin (505) is covered with a dust cover (504). The dust cover (504) is fixed to the ball pin mounting plate (502) through the dust cover spring clamp (503).
3. The vehicle light-weighting lower control arm assembly structure of claim 1, wherein: The lower control arm body (1) has a shock absorber bushing mating hole (112), a comfort bushing mating hole (113), and a handling bushing mating hole (114) respectively at the triangular part. The shock absorber bushing (2), the comfort bushing (3), and the handling bushing (4) are respectively pressed into the shock absorber bushing mating hole (112), the comfort bushing mating hole (113), and the handling bushing mating hole (114).
4. The vehicle light-weighting lower control arm assembly structure of claim 3, wherein: The three "T"-shaped walls are the lightweight "T"-shaped wall (101) on the outer side of the control arm, the lightweight "T"-shaped wall (102) on the inner side of the control arm, and the lightweight "T"-shaped wall (103) at the rear of the control arm. The lightweight "T"-shaped wall (101) on the outer side of the control arm is connected between the shock absorber bushing (2) and the comfort bushing (3). The lightweight "T"-shaped wall (102) on the inner side of the control arm is connected between the comfort bushing (3) and the handling bushing (4). The lightweight "T"-shaped wall (103) at the rear of the control arm is connected between the shock absorber bushing (2) and the handling bushing (4). The lower control arm body (1) is provided with a lightweight hollow design structure (104) in the middle of the control arm.
5. The vehicle light-weighting lower control arm assembly structure of claim 4, wherein: The longitudinal sections of the lightweight "T"-shaped wall (101) on the outer side of the control arm, the lightweight "T"-shaped wall (102) on the inner side of the control arm, and the lightweight "T"-shaped wall (103) at the rear of the control arm are all "T"-shaped. The lightweight "T"-shaped wall (101) on the outer side of the control arm, the lightweight "T"-shaped wall (102) on the inner side of the control arm, and the lightweight "T"-shaped wall (103) at the rear of the control arm are connected to the damper bushing mating hole (112), the comfort bushing mating hole (113), and the handling bushing mating hole (114) to form a triangular overlapping structure with a lightweight hollow center.
6. The vehicle light-weighting lower control arm assembly structure of claim 1, wherein: The lower control arm body (1) is forged from aluminum alloy.