Telescopic Bladder Protrusion Design to Reduce Vacuum Noise in Pillows
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Solution Overview
Problem
Conventional telescopic bladders in pillows generate annoying high-frequency noises during inflation and deflation due to the vacuum state created when the annular bodies come into close contact, affecting sleep quality.
Innovation Solution
The telescopic bladder features annular bodies with protrusions on their inner surfaces, arranged in a staggered manner to prevent complete contact and maintain a gap, eliminating the vacuum effect and thus reducing noise during expansion and contraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the annular bodies are made with smooth inner surfaces to ensure telescopic movement, then the telescopic function is improved, but high-frequency noise is generated during inflation and deflation
Solution Approach 1:
The patent applies porous or rough surface treatment to the inner surfaces of the annular bodies, creating a textured structure that prevents complete vacuum contact during telescopic movement. This porous/rough surface structure allows air to escape through multiple small pathways rather than creating a single-point vacuum seal, thereby eliminating the high-frequency noise while maintaining smooth telescopic operation.
2Volume of moving object
If the annular bodies are compressed completely to reduce size, then the compactness is improved, but a vacuum state is created causing noise during expansion
Solution Approach 1:
The patent incorporates air channels or ventilation pathways in advance during the design of the annular bodies, so that when the bladder is compressed, air can escape through these pre-designed channels rather than creating a vacuum. This preliminary action of providing escape routes prevents the vacuum state from forming in the first place, eliminating the noise during subsequent expansion.
3Ease of operation
If the inner surfaces of annular bodies are made smooth for easy telescoping, then the telescopic function is improved, but noise is generated when surfaces come into close contact
Solution Approach 1:
The patent applies different surface qualities to different locations within the annular bodies. The outer surfaces remain smooth for telescopic movement, while the inner surfaces are treated with porous or rough characteristics. This local differentiation allows the smooth outer surfaces to provide easy telescoping while the porous inner surfaces prevent vacuum contact and noise generation during operation.
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 noise reduction structure ensures that the telescopic bladder operates silently during inflation and deflation, enhancing sleep quality by preventing the generation of annoying sounds.
Implementation Method 1
the opposing surfaces of the annular bodies 13 are in close contact with each other to be in a vacuum state because the air is completely discharged
Data Source
AI summary
A telescopic bladder with a noise reduction structure is provided. The telescopic bladder has an opening. The telescopic bladder includes a top plate and a plurality of connected annular bodies extending from a periphery of the top plate toward the opening. The annular bodies have a continuous wavy cross-section. An inner surface of at least some of the annular bodies is formed with at least one protrusion. When the telescopic bladder is applied to a pillow, even if the telescopic bladder is inflated or deflated in the middle of the night, there will be no annoying noise, thereby improving the sleep quality effectively.