Planar Loudspeaker Centering via Elastic Stroke Sections
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Planar loudspeakers face challenges in centering the drive unit without compromising sound quality, especially at lower volumes, due to the dead weight of the sound panel and dynamic movement processes, which is typically addressed with magnetic fluids that increase costs and material requirements.
Innovation Solution
A planar loudspeaker design without a loudspeaker basket or support frame, utilizing a stabilizing device spaced apart from the drive unit and a centering device with movable, flexible stroke sections to ensure proper alignment and movement of the sound panel, eliminating the need for magnetic fluids and reducing manufacturing complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If magnetic fluid is used to mount the coil carrier, then centering of the drive unit is improved, but material outlay and costs increase
Solution Approach 1:
The invention extracts and eliminates the magnetic fluid from the system by introducing a mechanical centering device with flexible stroke sections. This mechanical solution replaces the need for magnetic fluid, thereby reducing material outlay and costs while maintaining centering functionality.
Solution Approach 2:
The invention replaces the magnetic field-based centering system with a mechanical centering device. The flexible stroke sections provide mechanical guidance and centering through physical contact and elastic deformation, substituting the electromagnetic mechanism with a purely mechanical one.
2Manufacturing precision
If magnetic fluid is used to mount the coil carrier, then centering of the drive unit is improved, but device complexity increases
Solution Approach 1:
The invention removes the complex magnetic fluid application system and replaces it with a simple mechanical centering device. The flexible stroke sections integrated into the existing structure provide centering functionality without requiring additional complex subsystems.
Solution Approach 2:
The flexible stroke sections serve multiple functions: they provide mechanical support, enable centering of the drive unit, and accommodate dynamic movements. This multi-functionality reduces the need for separate centering mechanisms, thereby simplifying the overall device structure.
3Strength
If elastic retaining element is used to attach sound panel, then structural support is improved, but sound panel's freedom of movement is restricted
Solution Approach 1:
The invention uses flexible stroke sections made of elastomeric material that can deform elastically. These flexible elements provide structural support while accommodating the dynamic movements of the sound panel, allowing the panel to move freely within its operational range without rigid constraints.
Solution Approach 2:
The flexible stroke sections are designed to be dynamic rather than static, allowing them to adapt their stiffness and deformation based on the movement requirements of the sound panel. This dynamic characteristic enables both structural support and freedom of movement.
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 design achieves centering of the drive unit simply and inexpensively while maintaining sound quality, allowing for compact and flat designs without the need for complex manufacturing or additional materials, and prevents unwanted movements like tilting and axial twisting.
Implementation Method 1
a stabilizing device, not surrounding the drive unit, for stabilizing any movement of the sound panel... The stroke section is configured to be movable and/or flexible and/or elastic
Implementation Method 2
a centering device, not surrounding the drive unit, for centering the sound panel and/or at least a part of the drive unit... The stroke section is configured to be movable and/or flexible and/or elastic
Implementation Method 3
the drive unit is configured as an electrodynamic drive. In this regard, especially, a conductor through which current flows, e.g. a wire, can be held in a magnetic field. A force is thereby exerted on the sound panel connected to the drive unit
Data Source
AI summary
Planar loudspeaker comprising a planar sound panel (10), a mounting (12), at least one drive unit (14) for driving the sound panel (10), said drive unit preferably being attached to the mounting (12), and at least one stabilizing device (22) for stabilizing a movement of the sound panel (10), wherein the stabilizing device (22) is arranged between the sound panel (10) and the mounting (12) and comprises at least a stroke section (28), which is configured so as to be movable, flexible and/or elastic, and at least one centering device (36) for centering the sound panel (10) and/or at least a part of the drive unit (14), wherein the centering device (36) is arranged in a different plane than the stabilizing device (22) and comprises at least a stroke section (28), which is configured so as to be movable, flexible and/or elastic.