Loudspeaker Mounting Assembly Tilt Adjustment
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Solution Overview
Problem
Existing loudspeaker mounting assemblies suffer from significant acoustic performance degradation due to internal sound reflections, particularly when the loudspeaker is adjusted off-axis, as the speaker must be positioned far enough from the grille to prevent mechanical interference, leading to sound waves traveling through the mounting assembly and encountering structural components.
Innovation Solution
A mounting assembly design that includes a frame with an outer and inner frame, where the inner frame is rotatable and the sleeve is pivotable, allowing for adjustable tilt and rotation, minimizing the distance between the loudspeaker and the grille while maintaining acoustic integrity by ensuring the sound axis remains aligned with the mounting surface at all angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the loudspeaker is positioned far from the grille to prevent mechanical interference, then the loudspeaker diaphragm can move freely without contact, but sound waves travel through the mounting assembly and reflect off structural components, degrading acoustic performance
Solution Approach 1:
The patent repositions the loudspeaker along the axial dimension, placing it as close as possible to the grille face rather than distancing it radially or laterally. This dimensional repositioning allows the sound axis to remain aligned with the mounting surface while minimizing the path length through the mounting assembly, thereby reducing reflections without compromising diaphragm movement freedom
2Adaptability or versatility
If the loudspeaker is adjusted off-axis to change directivity, then the mounting assembly provides adjustable sound distribution, but the loudspeaker points into the mounting assembly structure, increasing sound reflections and degrading acoustic performance
Solution Approach 1:
The patent employs a dynamic mounting mechanism that allows the loudspeaker to pivot and tilt while maintaining its sound axis alignment with the mounting surface. This dynamic capability enables off-axis adjustment for directivity control while ensuring the sound waves propagate outward rather than into the mounting structure, thus maintaining acoustic performance across all adjustment positions
3Object-generated harmful factors
If the loudspeaker is positioned close to the grille to minimize sound wave travel distance, then acoustic performance is improved by reducing reflections, but the loudspeaker diaphragm may contact the grille during operation
Solution Approach 1:
The patent creates a localized acoustic pathway directly between the loudspeaker and grille, optimizing the immediate sound propagation route while providing sufficient lateral clearance for diaphragm excursions. This local quality approach allows close positioning for minimal reflection path length while maintaining mechanical freedom through strategic spacing in the lateral dimension
Data Source
AI summary
A loudspeaker mounting assembly includes a frame, a sleeve, and a tilt-angle adjustment mechanism. The frame may include an outer frame, an inner frame rotatable about a frame axis relative to the outer frame, and a frame wall extending away from a rear side. The sleeve is coupled to the inner frame at a pivot axis and is tiltable to a plurality of tilt angles relative to the inner frame. The tilt-angle adjustment mechanism is engageable with the sleeve to enable selection of a desired tilt angle. A loudspeaker may be mounted to the sleeve such that the loudspeaker may be swiveled about the frame axis and tilted about the pivot axis.