Formula racing suspension swing arm structure
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEBEI UNIV OF TECH
- Filing Date
- 2025-09-29
- Publication Date
- 2026-08-07
AI Technical Summary
[0003]传统的悬架摇臂为实现轻量化，普遍采用碳纤维复合材料或高性能铝合金，但碳纤维部件在连接点处容易因应力集中而损坏，而铝合金部件在达到同等刚度时往往重量较大，摇臂与车架、减震器、推杆等的连接铰接孔承受极大的交变载荷，是结构的薄弱环节
该方程式赛车悬架摇臂结构，通过碳纤维复合材料和减重槽的设计，实现了极低的重量，高模量碳纤维和一体化的耳片结构保证了整体的高刚度，有利于悬架的精准控制，在所有关键铰接孔内采用钛合金金属环，彻底解决了复合材料连接点的磨损和应力集中问题，寿命长，可靠性极高。
Smart Images
Figure CN224602637U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of Formula racing technology, specifically to a Formula racing suspension rocker arm structure. Background Technology
[0002] In Formula One racing, the suspension system is a core component that determines the vehicle's handling stability, tire grip, and overall performance. The suspension rocker arms, as the skeleton of the suspension system, are responsible for connecting the wheels, transmitting various complex dynamic loads (such as braking force, lateral force, and impact force), and precisely constraining the wheel's trajectory.
[0003] Traditional suspension rocker arms typically utilize carbon fiber composites or high-performance aluminum alloys to achieve weight reduction. However, carbon fiber components are prone to damage at connection points due to stress concentration, while aluminum alloy components often result in greater weight while achieving the same stiffness. The hinge holes connecting the rocker arm to the frame, shock absorbers, pushrods, etc., bear extremely high alternating loads, making them weak points in the structure. Fatigue failure is also common at the connections between metal components and composite materials. Therefore, we propose a Formula One racing suspension rocker arm structure. Summary of the Invention
[0004] The purpose of this invention is to provide a suspension rocker arm structure for Formula One racing cars to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: A Formula One racing car suspension rocker arm structure includes two lugs. A connecting hinge hole is provided on the left side of each lug, and a main mounting ring is disposed inside the connecting hinge hole. Both lugs are fixedly mounted on the main mounting ring and then mounted on the chassis via the main mounting ring. A shock absorber hinge hole is provided on the right side of each lug for connecting to a shock absorber. A pushrod hinge hole is provided at the front of each lug for mounting a pushrod. Metal rings are fixedly installed inside both the shock absorber hinge hole and the pushrod hinge hole. Weight reduction grooves are provided on the surface of each lug.
[0006] Preferably, a reinforcing ring is fixedly installed on the outer surface of the main mounting ring, and the main mounting ring is fixedly installed on the ear piece by the reinforcing ring.
[0007] Preferably, both the metal ring and the main mounting ring are made of titanium alloy.
[0008] Preferably, the ear piece comprises two layers of high-modulus carbon fiber, with an aramid fiber layer disposed between the two layers of high-modulus carbon fiber, and the high-modulus carbon fiber layer and the aramid fiber layer are impregnated with thermoplastic resin.
[0009] Preferably, the outer surface of the high-modulus carbon fiber layer is provided with an extremely thin glass fiber fabric.
[0010] Compared with the prior art, this utility model provides a Formula One racing car suspension rocker arm structure, which has the following beneficial effects: The Formula One car suspension rocker arm structure achieves extremely low weight through the design of carbon fiber composite materials and weight reduction grooves. High modulus carbon fiber and integrated lug structure ensure high overall rigidity, which is conducive to precise control of the suspension. Titanium alloy metal rings are used in all key hinge holes, which completely solves the problems of wear and stress concentration at the joints of composite materials, resulting in long service life and extremely high reliability.
[0011] The Formula One car's suspension rocker arm structure features a "carbon fiber-aramid-carbon fiber" sandwich structure, which allows the rocker arm to undergo plastic deformation and absorb energy when subjected to impact, rather than suddenly breaking. This significantly improves damage tolerance and the safety of the car. The outermost ultra-thin glass fiber fabric effectively prevents galvanic corrosion and enhances the durability of the components in complex environments. The thermoplastic resin matrix also gives the components better resistance to damp heat and chemical corrosion. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model from another angle; Figure 3 This is a schematic diagram of the cross-section of the ear piece of this utility model.
[0013] In the figure: 1. Ear plate; 2. Connecting hinge hole; 3. Shock absorber hinge hole; 4. Push rod hinge hole; 5. Metal ring; 6. Main body mounting ring; 7. Reinforcing ring; 8. Weight reduction groove; 11. High modulus carbon fiber layer; 12. Aramid fiber layer; 13. Ultra-thin glass fiber fabric. Detailed Implementation
[0014] Please see Figure 1-3 A Formula One car suspension rocker arm structure includes two lugs 1. A connecting hinge hole 2 is provided on the left side of the lug 1. A main mounting ring 6 is provided inside the connecting hinge hole 2. Both lugs 1 are fixedly mounted on the main mounting ring 6 and mounted on the car frame through the main mounting ring 6. In order to enhance the rigidity and strength of this key connection point, a reinforcing ring 7 is fixedly mounted on the outer surface of the main mounting ring 6. The main mounting ring 6 is fixedly mounted on the lug 1 through the reinforcing ring 7, forming a locally reinforced "I" shaped structure, which effectively resists bending and torsion. The right side of the ear piece 1 is provided with a shock absorber hinge hole 3 for connecting with the shock absorber. The front of the ear piece 1 is provided with a push rod hinge hole 4 for installing the push rod. Metal rings 5 are fixedly installed inside both the shock absorber hinge hole 3 and the push rod hinge hole 4. The load of the shock absorber and the push rod can be directly transferred to the sturdy metal ring and then distributed to the entire ear piece structure, avoiding the problems of easy wear and stress concentration of composite material threads. Among them, the metal ring 5 and the main mounting ring 6 are both made of titanium alloy. Titanium alloy has extremely high specific strength and excellent fatigue resistance, making it an ideal material for withstanding high dynamic loads. The surface of the ear piece 1 is provided with weight reduction grooves 8. The shape and layout of these weight reduction grooves have been optimized by finite element analysis. While removing excess material, the smooth transfer of load is ensured, and effective weight reduction is achieved. See Figure 3 The ear piece 1 includes two high-modulus carbon fiber layers 11, with an aramid fiber layer 12 disposed between the two high-modulus carbon fiber layers 11. Aramid fiber is known for its excellent toughness and impact resistance, which can effectively inhibit the propagation of cracks between carbon fiber layers and greatly improve the damage tolerance of the component. The high-modulus carbon fiber layer 11 and the aramid fiber layer 12 are impregnated with thermoplastic resin. Compared with traditional thermosetting epoxy resin, thermoplastic resin itself has higher toughness and repairability. The outer surface of the high-modulus carbon fiber layer 11 is provided with an extremely thin glass fiber fabric 13, the main function of which is to prevent electrochemical corrosion when the carbon fiber comes into contact with external metal parts (such as other parts of the vehicle body), while providing additional surface protection.
[0015] Working Principle: In this Formula One racing car suspension rocker arm structure, when the wheel is impacted by the ground or subjected to lateral force, the force is transmitted to the pushrod and shock absorber through the steering knuckle. The force of the pushrod is input to the rocker arm through the metal ring 5 within the pushrod hinge hole 4; the damping force of the shock absorber is input through the metal ring 5 within the shock absorber hinge hole 3. These input loads are transmitted through the composite material body of the lug 1 (especially the high-modulus carbon fiber layer 11). The aramid fiber layer 12 acts as a toughening layer in this process, absorbing local peak stress and impact energy to prevent catastrophic brittle failure of the structure. The load on the lug 1 ultimately converges towards the center, and through the super-connection point formed by the main mounting ring 6 and the reinforcing ring 7, the combined load is efficiently transmitted to the frame. Throughout this process, the high stiffness of the structure ensures the accuracy of wheel alignment parameters, while excellent toughness guarantees safety under extreme conditions. The thermoplastic resin matrix further enhances the structure's fatigue resistance.
Claims
1. A formula racing car suspension rocker arm structure, comprising two lugs (1), characterized in that: The left side of the ear piece (1) is provided with a connecting hinge hole (2), and the inside of the connecting hinge hole (2) is provided with a main body mounting ring (6). Both ear pieces (1) are fixedly mounted on the main body mounting ring (6) and mounted on the frame through the main body mounting ring (6). The right side of the ear piece (1) is provided with a shock absorber hinge hole (3) for connecting with the shock absorber. The front of the ear piece (1) is provided with a push rod hinge hole (4) for installing a push rod. Both the shock absorber hinge hole (3) and the push rod hinge hole (4) are fixedly installed with metal rings (5). The surface of the ear piece (1) is provided with a weight reduction groove (8).
2. The Formula One car suspension rocker arm structure according to claim 1, characterized in that: A reinforcing ring (7) is fixedly installed on the outer surface of the main mounting ring (6), and the main mounting ring (6) is fixedly installed on the ear piece (1) by the reinforcing ring (7).
3. The Formula One car suspension rocker arm structure according to claim 1, characterized in that: Both the metal ring (5) and the main mounting ring (6) are made of titanium alloy.
4. The Formula One car suspension rocker arm structure according to claim 1, characterized in that: The ear piece (1) includes two high-modulus carbon fiber layers (11), and an aramid fiber layer (12) is disposed between the two high-modulus carbon fiber layers (11). The high-modulus carbon fiber layer (11) and the aramid fiber layer (12) are impregnated with thermoplastic resin.
5. The Formula One car suspension rocker arm structure according to claim 4, characterized in that: The outer surface of the high modulus carbon fiber layer (11) is provided with an extremely thin glass fiber fabric (13).