Membrane Silencing Structure for Noise Cancellation in Tight Spaces
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Solution Overview
Problem
Existing silencing members require a dedicated space for a seesaw member to connect wave-transmitting-and-receiving membranes, limiting their installation to locations with sufficient space.
Innovation Solution
A silencing member design that includes adjacent first and second spaces connected via a passage, utilizing a membrane-shaped member to transmit vibration and generate a cancellation wave without needing a connecting component, allowing installation in smaller spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a seesaw member is used to connect wave-transmitting-and-receiving membranes, then vibration transmission and cancellation wave generation are achieved, but a dedicated space for the connecting component is required, limiting installation locations
Solution Approach 1:
The patent merges the functions of vibration transmission and cancellation wave generation into a single integrated membrane structure. The second membrane simultaneously transmits vibration from the first space and generates the cancellation wave in the second space, eliminating the need for separate connecting components like the seesaw member.
Solution Approach 2:
The second membrane performs multiple functions: it acts as a vibration transmission path from the first space, serves as a wave-transmitting membrane in the second space, and generates the cancellation wave. This multi-functionality replaces the specialized seesaw member and reduces space requirements.
2Reliability
If a seesaw member connects the wave-transmitting-and-receiving membranes, then noise cancellation is achieved, but the device complexity increases due to the additional connecting component
Solution Approach 1:
The patent extracts and eliminates the specialized seesaw member from the system by integrating its vibration transmission function directly into the membrane structure. The second membrane itself serves as the vibration transmission path, removing the need for separate connecting mechanisms.
Solution Approach 2:
The patent combines the vibration transmission path and the wave-transmitting membrane into a single integrated structure. The second membrane simultaneously serves as both the vibration transmission medium and the active element generating the cancellation wave, reducing overall device complexity.
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
Enables effective noise cancellation in smaller spaces by quickly transmitting vibration between adjacent spaces, eliminating the need for a connecting component and allowing installation in confined areas.
Implementation Method 1
the adjacent first and second spaces are coupled via the passage. Thus, the silencing member can quickly transmit vibration input to one space to the other space via the passage
Implementation Method 2
the portion of the second member covering the other space can quickly generate a cancellation wave of the opposite phase to the input sound wave
Data Source
AI summary
A silencing member includes: a first space; a second space that is disposed adjacent to the first space; a passage that connects the first and second spaces; a first member that surrounds the bottom surfaces and/or the side surfaces of the first and second spaces; and a membrane-shaped second member that covers the top surfaces of the first and second spaces.