Transition System Sound Absorber Gap Design
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Solution Overview
Problem
Existing transition systems for movably connected vehicles face challenges in achieving optimal sound insulation without compromising mobility, as traditional methods often result in thicker, heavier, and more expensive bellows with limited effectiveness in specific frequency ranges.
Innovation Solution
The integration of sound absorbers in gaps between the bellows and surface elements within the transition system, which are designed to follow vehicle movements, enhances sound insulation without restricting mobility by using materials like lightweight foam and strategically placing absorbers to target specific frequency ranges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If sound-absorbing layers are attached to bellows, then sound insulation is improved, but bellows become thicker, heavier and more expensive
Solution Approach 1:
The sound absorption function is extracted from the bellows structure itself and relocated to separate sound absorber components positioned in the gap between bellows and surface elements. This allows the bellows to remain lightweight while achieving sound insulation through the dedicated sound absorber elements.
Solution Approach 2:
Sound absorbers are introduced as intermediary elements positioned in the gap between the bellows and surface elements. These mediators provide sound absorption without being integrated into the bellows structure, thus avoiding increased bellows weight and complexity.
2Object-affected harmful factors
If sound-absorbing materials are used in bellows, then sound insulation is improved, but mobility of the transition system is restricted
Solution Approach 1:
The sound absorption function is extracted from the bellows and implemented in separate, movable sound absorber components. This separation allows the bellows to maintain full mobility while the sound absorbers provide acoustic treatment without restricting movement.
Solution Approach 2:
The sound absorbers are designed as dynamic components that can move with the transition system. They are positioned and configured to follow the movement of the bellows and surface elements, ensuring sound insulation is maintained throughout the range of motion without restricting mobility.
3Object-affected harmful factors
If sound absorbers are placed in the gap between bellows and surface elements, then sound insulation is improved, but the gap space is occupied
Solution Approach 1:
Sound absorbers are strategically positioned in specific locations within the gap where they provide maximum acoustic benefit. Rather than filling the entire gap volume, sound absorbers are placed at key positions where they effectively address sound transmission paths while minimizing space occupation.
Solution Approach 2:
The dimensions, shapes, and positions of sound absorbers are optimized to provide effective sound insulation with minimal volume occupation. By adjusting parameters such as absorber size, placement distance from bellows, and configuration, effective sound control is achieved while preserving gap space for other functions.
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
This approach significantly improves sound insulation, particularly in the 1 kHz to 2 kHz frequency range, while maintaining the mobility and reducing wear on components, by using flexible and spaced sound absorbers that can deform with vehicle movements without colliding.
Implementation Method 1
at least one sound absorber is arranged in the intermediate space
Data Source
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AI summary
The invention relates to a transition system (1) for arrangement between two vehicles movably connected to one another. The transition system (1) comprises a bellows (2) extending in the direction of passage (4) of the transition system (1) and separating an interior space (6) of the transition system (1) from a region (7) outside the transition system (1). Furthermore, the transition system (1) comprises at least one surface element (11) arranged in the interior space (6) at a distance from the bellows (2) and designed to follow relative movements of the two connected vehicles occurring during operation. A space (17) is formed between the bellows (2) and the surface element (11). According to the invention, at least one sound absorber (18) is arranged in the space (17).