Speaker Enclosure Vibration Damping via Coupling Element
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Solution Overview
Problem
Mechanical vibrations from loudspeakers in speaker devices like Bluetooth speakers and speakerphones cause rattling and unwanted acoustical contributions, leading to nonlinear vibration pathways that complicate echo cancellation and affect sound quality.
Innovation Solution
A speaker device design featuring a mechanically coupled speaker enclosure structure with vibration damping elements, both within the enclosure and the housing, to inhibit the transmission of mechanical vibrations, thereby reducing rattling and improving sound quality by using flexible damping elements and a coupling structure that can be formed integrally or as separate components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the speaker enclosure structure is mechanically coupled to the speaker device housing, then structural stability is improved, but mechanical vibrations are transmitted causing rattling and unwanted acoustical contributions
Solution Approach 1:
A damping element is introduced as an intermediary component between the speaker enclosure structure and the speaker device housing. This damping element absorbs and dissipates mechanical vibrations, preventing them from being transmitted to the housing while maintaining the structural coupling. The damping element acts as a mediator that decouples the vibration pathways while preserving the mechanical connection for structural stability.
2Object-generated harmful factors
If vibration damping structures are added to inhibit mechanical vibrations, then rattling is reduced, but device complexity increases
Solution Approach 1:
The damping element is merged with the coupling structure between the speaker enclosure and housing. Instead of being a separate additional component, the damping function is integrated into the existing mechanical coupling interface. This merging approach reduces device complexity by eliminating the need for separate damping structures while still achieving vibration inhibition.
3Reliability
If multiple damping elements are provided at different locations, then vibration damping performance is improved, but manufacturing complexity increases
Solution Approach 1:
Damping elements are strategically positioned at specific locations where vibration transmission is most critical - namely at the coupling points between the speaker enclosure structure and housing. Rather than uniformly distributing damping throughout the entire structure, the local quality approach concentrates damping materials at the key vibration pathways, improving damping performance while simplifying manufacturing by reducing the number of components and assembly steps.
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
Effectively dampens mechanical vibrations, reducing rattling and improving sound quality by isolating the speaker enclosure from the housing, which enhances the coherence of the signal path and reduces unwanted acoustical contributions.
Implementation Method 1
The coupling element may have a vibration damping structure configured to inhibit mechanical vibrations being transmitted through the coupling element
Implementation Method 2
The first damping element may be flexible and configured to dampen mechanical vibrations
Data Source
AI summary
A speaker device is disclosed. The speaker device includes a speaker enclosure structure including a speaker. The speaker is an electro-mechanical component, which in operation generates sound waves by deflection of a speaker membrane and in collaboration with the speaker enclosure structure. The speaker device further includes a speaker device housing. The speaker device housing is an outer shell of the speaker device and may accommodate additional electronic components required for operation of the speaker or for other purposes. The speaker enclosure structure is mechanically coupled to the speaker device housing. The speaker device further includes at least one coupling element, wherein the speaker enclosure structure is mechanically coupled to the speaker device housing by the at least one coupling element, the coupling element having a vibration damping structure configured to inhibit mechanical vibrations being transmitted through the coupling element.