A rear control arm of forged aluminum

Abstract

The utility model discloses a kind of rear suspension forging aluminum control arms, including control arm main body, the upper side middle part of control arm main body is formed into concave portion by being concave downwards, the downside of control arm main body is formed into arc convex portion by being convex downwards, the right side of arc convex portion is provided with flat convex portion, the front and back sides of this flat convex portion are outwardly extending arc structure;The both ends of control arm main body are respectively provided with knuckle mounting portion and auxiliary frame mounting portion, and the first rubber support and the second rubber support are respectively inserted in the knuckle mounting portion and the auxiliary frame mounting portion;The front and back sides of control arm main body are relatively fixedly provided with reinforcing rib, and the reinforcing rib extends in wave shape along the length direction of control arm main body.The utility model can solve the problems of the existing sheet metal control arm, such as heavy weight, high energy consumption, insufficient impact resistance and fatigue resistance, uncontrollable collision bending direction and easy local cracking.

Description

Technical Field

[0001] This utility model relates to the field of control arm technology, specifically a rear-suspension forged aluminum control arm. Background Technology

[0002] In a multi-link rear suspension system, the control arm, as a core force-transmitting component, connects to the subframe at one end and the steering knuckle at the other, directly affecting the vehicle's driving stability, safety, and energy consumption. To meet the stringent mechanical strength requirements of multi-link suspensions, existing control arms are mostly made of sheet metal. However, sheet metal control arms are relatively heavy, increasing the unsprung mass of the vehicle and hindering the achievement of lightweight goals. In terms of safety performance, there are specific requirements for the tensile and crush displacements of the control arm in vehicle collision scenarios. Traditional sheet metal control arm designs struggle to accurately meet these energy absorption indicators, failing to absorb impact energy to the maximum extent to protect passengers in the cab during a collision. Furthermore, existing sheet metal control arms lack precise control over the crush bending direction, making them prone to disordered breakage or abnormal bending during a collision. This could potentially intrude into the cab, causing secondary injuries to passengers, or interfere with the normal operation of other chassis components, significantly increasing subsequent maintenance costs. Therefore, a new control arm needs to be designed to meet current usage requirements. Utility Model Content

[0003] This utility model provides a rear-suspension forged aluminum control arm, which can solve the problems of existing sheet metal control arms being heavy, energy-intensive, lacking impact and fatigue resistance, having uncontrollable bending direction upon impact, and being prone to local cracking.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a rear suspension forged aluminum control arm, comprising a control arm body, wherein the upper middle part of the control arm body is concave downward to form a concave portion, and the lower part of the control arm body is convex downward to form an arc-shaped protrusion, wherein a flat protrusion is provided on the right side of the arc-shaped protrusion, and the front and rear sides of the flat protrusion are arc-shaped structures extending outward; a steering knuckle mounting portion and a subframe mounting portion are respectively provided at both ends of the control arm body, wherein a first rubber support and a second rubber support are respectively inserted into the steering knuckle mounting portion and the subframe mounting portion; reinforcing ribs are fixedly provided on both the front and rear sides of the control arm body, and the reinforcing ribs extend in a wave-like manner along the length direction of the control arm body; the control arm body is forged from aluminum alloy, which reduces the weight of the whole vehicle and reduces energy consumption; the structural reinforcement of the wave-shaped reinforcing ribs and the flat protrusion ensures that the control arm has excellent impact resistance and fatigue resistance; the coordinated design of the concave portion and the arc-shaped protrusion precisely controls the bending direction during a collision.

[0005] As a supplement to the technical solution described in this utility model, the main body of the control arm is forged from aluminum alloy, which reduces the weight of the control arm and lowers energy consumption.

[0006] As a supplement to the technical solution described in this utility model, the left end of the control arm body is provided with wire harness bracket grooves on the upper and lower sides of the reinforcing rib, and the right end of the control arm body is provided with multiple first bosses symmetrically on both sides. The wire harness bracket grooves are used to position the wire harness, and the first bosses are used for machining positioning.

[0007] As a supplement to the technical solution described in this utility model, the steering knuckle mounting part is provided with a first mounting hole that matches the first rubber support, and the first rubber support is inserted into the first mounting hole with an interference fit.

[0008] As a supplement to the technical solution described in this utility model, the subframe mounting part is provided with a second mounting hole that matches the second rubber support, and the second rubber support is inserted into the second mounting hole with an interference fit.

[0009] As a supplement to the technical solution described in this utility model, an arc-shaped transition portion is provided at the concave portion, which transfers the fatigue position and effectively disperses stress.

[0010] Compared with the prior art, the beneficial effects of this utility model are: The control arm body is forged from forged aluminum alloy, reducing overall vehicle weight and energy consumption. This results in excellent handling and stability during vehicle operation, while also reducing noise. The forged aluminum control arm body has a good buckling range and elongation at break, effectively absorbing energy during a collision to ensure the safety of passengers. Combined with the structural reinforcement of wave-shaped reinforcing ribs and flat protrusions, the control arm possesses excellent impact and fatigue resistance. The synergistic design of the concave portion and the arc-shaped protrusion precisely controls the bending direction during a collision. The arc-shaped transition of the concave portion effectively disperses stress, preventing localized cracking. This design solves the problems of existing sheet metal control arms, such as high weight, high energy consumption, insufficient impact and fatigue resistance, uncontrollable bending direction during a collision, and susceptibility to localized cracking. Attached Figure Description

[0011] Figure 1 The three-dimensional structure of this utility model Figure 1 ; Figure 2 This is the main view of the present utility model. Figure 1 ; Figure 3 This is the main view of the present utility model. Figure 2 ; Figure 4 The three-dimensional structure of this utility model Figure 2 ; Figure 5 This is a top view of the present invention; Figure 6This is a schematic diagram of the structure of the flat protrusion of this utility model; Figure 7 This is a schematic diagram of the structure of the arc-shaped transition section of this utility model; Figure 8 This is a cross-sectional schematic diagram of point AA in this utility model; Figure 9 This is a cross-sectional schematic diagram of the BB section of this utility model.

[0012] Figure label: 1. Control arm body; 2. Concave part; 3. Arc-shaped protrusion; 4. Flat protrusion; 5. Steering knuckle mounting part; 6. Subframe mounting part; 7. First rubber support; 8. Second rubber support; 9. Reinforcing rib; 10. Wiring harness bracket groove; 11. First boss; 12. First mounting hole; 13. Second mounting hole; 14. Arc-shaped transition part; 15. Second boss. Detailed Implementation

[0013] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0014] The embodiments of this utility model relate to a rear-suspension forged aluminum control arm, such as... Figure 1-9 As shown, the control arm body 1 includes a concave portion 2 formed by a downward-facing inward curve at the upper center of the control arm body 1, and an arc-shaped protrusion 3 formed by a downward-facing downward curve at the lower side of the control arm body 1. A flat protrusion 4 is provided on the right side of the arc-shaped protrusion 3, and the front and rear sides of the flat protrusion 4 are arc-shaped structures extending outwards. Steering knuckle mounting portions 5 and subframe mounting portions 6 are respectively provided at both ends of the control arm body 1. A first rubber support 7 and a second rubber support 8 are respectively inserted into the steering knuckle mounting portions 5 and the subframe mounting portions 6. Reinforcing ribs 9 are fixedly provided on both the front and rear sides of the control arm body 1. The reinforcing ribs 9 extend in a wavy shape along the length direction of the control arm body 1. The control arm body 1 and the reinforcing ribs 9 are integrally forged from forged aluminum alloy. The reinforcing ribs 9 increase the thickness of the control arm body 1. Figure 8 As shown, the cross-section is cross-shaped, making it difficult for the main body 1 of the control arm to bend left or right. Figure 7 As shown, the cross-section of the flat protrusion 4 has an "I" shaped structure. The flat protrusion 4 balances the overall rigidity and strength of the control arm. The concave part 2 and the arc-shaped protrusion 3 effectively control the bending direction of the forged arm during a collision. The bending direction always faces the ground, reducing the weight of the whole vehicle and reducing energy consumption.

[0015] In this embodiment, as Figure 2As shown, the left end of the control arm body 1 is provided with wire harness bracket grooves 10 on the upper and lower sides of the reinforcing rib 9. The wire harness bracket grooves 10 are used to position the wire harness. The upper and lower parts of the right end of the control arm body 1 are symmetrically provided with first bosses 11. The reinforcing rib 9 is provided with a second boss 15 near the steering knuckle mounting part 5. The first bosses 11 and the second bosses 15 are used for machining positioning. Since the bushing mounting planes on both sides of the steering knuckle mounting part 5 and the subframe mounting part 6 are not symmetrical, the first bosses 11 and the second bosses 15 are provided to meet the subsequent machining positioning requirements.

[0016] In this embodiment, as Figure 4 As shown, the steering knuckle mounting part 5 is provided with a first mounting hole 12 that matches the first rubber support 7, and the first rubber support 7 is inserted into the first mounting hole 12 with an interference fit.

[0017] In this embodiment, as Figure 4 As shown, the subframe mounting part 6 is provided with a second mounting hole 13 that matches the second rubber support 8, and the second rubber support 8 is inserted into the second mounting hole 13 with an interference fit.

[0018] In this embodiment, as Figure 2 As shown, an arc-shaped transition portion 14 is provided at the concave portion 2. The arc-shaped transition portion 14 transfers the fatigue position and effectively disperses the stress.

[0019] In this embodiment, as Figure 1 As shown, the main body 1 of the control arm is forged from aluminum alloy. The process route is pre-forging, final forging, trimming, and machining punching. It is lightweight, not easy to oxidize, has high strength, and increases service life.

[0020] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0021] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly and specifically defined.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

Claims

1. A rear-suspension forged aluminum control arm, characterized in that, include: The control arm body (1) has an inwardly recessed part (2) on the upper middle side and an arc-shaped protrusion (3) on the lower side. A flat protrusion (4) is provided on the right side of the arc-shaped protrusion (3). The front and rear sides of the flat protrusion (4) are arc-shaped structures extending outward. The control arm body (1) is provided with a steering knuckle mounting part (5) and a subframe mounting part (6) at both ends, and a first rubber support (7) and a second rubber support (8) are respectively inserted into the steering knuckle mounting part (5) and the subframe mounting part (6). The front and rear sides of the control arm body (1) are respectively fixed with reinforcing ribs (9), and the reinforcing ribs (9) extend in a wave shape along the length direction of the control arm body (1).

2. The rear-suspension forged aluminum control arm according to claim 1, characterized in that: The main body (1) of the control arm is forged from aluminum alloy.

3. The rear-suspension forged aluminum control arm according to claim 1, characterized in that: The left end of the control arm body (1) is provided with wire harness bracket grooves (10) on the upper and lower sides of the reinforcing rib (9), and multiple first bosses (11) are symmetrically provided on the right side of the control arm body (1).

4. The rear-suspension forged aluminum control arm according to claim 1, characterized in that: The steering knuckle mounting part (5) is provided with a first mounting hole (12) that matches the first rubber support (7).

5. The rear-suspension forged aluminum control arm according to claim 1, characterized in that: The subframe mounting section (6) is provided with a second mounting hole (13) that matches the second rubber support (8).

6. The rear-suspension forged aluminum control arm according to claim 1, characterized in that: An arc-shaped transition portion (14) is provided at the concave portion (2).

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