Bump Stopper Reinforcing Blocks Stress Distribution
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Solution Overview
Problem
Conventional bump stoppers for suspension systems face high material costs when made of polyurethane and compromised vibration absorption and durability when made of rubber, due to inadequate stress distribution and insulation capacity.
Innovation Solution
A bump stopper design featuring reinforcing blocks with specific contact angles and widths on convex portions, made of rubber, to decentralize stress and enhance durability and vibration absorption by prioritizing contact between blocks with smaller angles and wider widths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the bump stopper is made of polyurethane materials, then vibration-absorption capacity is improved, but material cost increases
Solution Approach 1:
The bump stopper uses a composite structure combining rubber base material with reinforcing blocks (metal or rigid polymer) to achieve polyurethane-level vibration absorption at lower cost. The reinforcing blocks provide structural integrity and stress distribution while the rubber material provides cost-effective vibration damping.
2Quantity of substance
If the bump stopper is made of rubber materials, then material cost is reduced, but vibration-absorption capacity deteriorates
Solution Approach 1:
The invention creates a composite structure where rubber material serves as the base providing cost advantage, while embedded reinforcing blocks enhance vibration absorption capacity to match or exceed polyurethane performance.
Solution Approach 2:
Reinforcing blocks are strategically positioned at specific locations (convex portions) where stress concentration occurs during compression, providing localized reinforcement that maximizes vibration absorption efficiency while minimizing additional material cost.
3Ease of manufacture
If the bump stopper is made of rubber materials with general shape, then manufacturing cost is reduced, but durability at overlapped portions deteriorates
Solution Approach 1:
The reinforcing blocks are specifically positioned at overlapped portions and convex portions where stress concentration occurs during compression. This localized reinforcement strengthens the weakest points without requiring a complete redesign of the entire bump stopper structure, maintaining manufacturing simplicity.
Solution Approach 2:
The reinforcing blocks are pre-positioned and integrated into the bump stopper design before assembly, ensuring that stress distribution is optimized from the outset. This prevents durability issues at overlapped portions without requiring post-manufacturing adjustments or complex assembly processes.
4Ease of manufacture
If the bump stopper is made of rubber materials with general shape, then manufacturing simplicity is maintained, but insulation capacity deteriorates
Solution Approach 1:
The reinforcing blocks are strategically positioned to create optimal stress distribution patterns during compression, enhancing the rubber material's ability to insulate and absorb vibration energy. The blocks are placed where they provide maximum insulation benefit without complicating the manufacturing process.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design effectively reduces stress on the parting line, enhances durability, and improves vibration and impact absorption by ensuring that blocks with smaller contact angles and wider widths absorb loads first, thereby improving overall performance.
Implementation Method 1
A bump stopper design featuring reinforcing blocks with specific contact angles and widths on convex portions, made of rubber, to decentralize stress and enhance durability and vibration absorption
Implementation Method 2
when the bump stopper 23 is made of rubber materials, vibration-absorption capacity may be deteriorated since the damping coefficient of rubber materials is nearly '0'
Data Source
AI summary
A bump stopper for a suspension system that has at least a parting line along a longitudinal direction of the bumper stopper, may include at least two convex portions coaxially connected each other in the longitudinal direction of the bump stopper and contacting each other in a compressed state, a first array including first reinforcing blocks integrally formed on the respective convex portions along the parting line, each abutting first reinforcing block having a first contact angle therebetween in the longitudinal direction of the bumper stopper, and a second array including second reinforcing blocks integrally formed on the respective convex portions, each abutting second reinforcing block having a second contact angle therebetween in the longitudinal direction of the bumper stopper, wherein the first array is disposed with a predetermined angle from the first array along a circumferential direction of the bumper stopper.