Non-Rotating Shock Absorber Carrier Anti-Twist Mechanism
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Solution Overview
Problem
RevoKnuckle suspension designs face challenges in connecting the carrier to a stabilizer, leading to compromised vehicle handling and increased weight and cost due to the need for additional components like control arms, which affect the stabilizer's function and efficiency.
Innovation Solution
The suspension employs an anti-twist protection mechanism between the shock absorber's cylinder and piston or piston rod, along with a non-rotational top-mount bearing connecting the piston rod to the vehicle body, eliminating the need for additional components and allowing optimal stabilizer design without attachment constraints.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the carrier is connected to a stabilizer in traditional RevoKnuckle suspension, then the carrier rotation is prevented, but the stabilizer's function and efficiency are negatively affected and vehicle handling deteriorates
Solution Approach 1:
The patent extracts the carrier rotation prevention function from the stabilizer connection and relocates it to a dedicated anti-twist protection mechanism integrated into the shock absorber assembly. This allows the stabilizer to perform its original function without interference, while the carrier rotation is prevented through the separate anti-twist mechanism featuring a non-circular guide hole and corresponding piston rod shape.
2Stability of the object's composition
If additional control arms are used to prevent carrier rotation, then carrier stability is improved, but device complexity, cost and weight increase
Solution Approach 1:
The patent merges the carrier rotation prevention function with the existing shock absorber assembly by integrating an anti-twist protection mechanism directly into it. The non-circular guide hole in the cylinder and the correspondingly shaped piston rod create a built-in anti-twist feature that eliminates the need for separate control arms or additional stabilization components.
Solution Approach 2:
The shock absorber assembly is given multi-functionality by incorporating the anti-twist protection mechanism within it. The same assembly that provides shock absorption now also prevents carrier rotation through the non-circular guide hole and piston rod configuration, eliminating the need for dedicated separate components for each function.
3Stability of the object's composition
If additional control arms or stabilizer modifications are used, then carrier rotation is prevented, but weight increases
Solution Approach 1:
The patent combines the rotation prevention function with the existing shock absorber components rather than adding separate weight-bearing elements. The anti-twist protection is achieved through the geometric configuration of the guide hole and piston rod already present in the shock absorber assembly, avoiding additional weight from extra control arms or stabilizer reinforcements.
Data Source
AI summary
A RevoKnuckle-type suspension for a wheeled vehicle has a hub mounted to a bearing carrier for rotation relative thereto about a steering axis, and a shock absorber connected non-rotatably to the bearing carrier. The shock absorber has an outer cylinder having an axially-extending guide hole defined therein, and a piston and attached piston rod retained for axial reciprocation in the guide hole. The guide hole and at least one of the piston and the piston rod retained therein have respective complementary-shaped, non-circular cross-sectional shapes which engage one another to resist axial rotation of the piston and/or the piston rod within the guide hole. The carrier is therefore restrained against rotation relative to the vehicle sprung structure without the need for any additional component(s) such as a control arm or stabilizer, as required in a traditional RevoKnuckle-type suspension.