Loudspeaker Attachment Unit With Elastic Base Ribs
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Solution Overview
Problem
Conventional speakers face instability in their fixed state due to inaccuracies in the size of fitting portions and pockets, leading to inappropriate attachment unit fixation and reduced tolerance for positional variations, resulting in an unstable fixed state between the speaker and the structure to which it is attached.
Innovation Solution
The loudspeaker design incorporates an attachment unit with first and second base ribs that absorb size variations and deformations, allowing for a stable fixation by a fixing member, which provides tolerance for positional variations and easy correction, ensuring a stable fixed state and preventing resonance due to vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the attachment unit is fixed to the frame by screwing the mounting frame from the sound radiation surface side using fixing jigs, then the fixing state between the frame and attachment unit is strengthened, but the occurrence of inappropriate fixing states cannot be suppressed due to size inaccuracies of fitting portions and pockets
Solution Approach 1:
The base ribs are designed with specific dimensional parameters (length, thickness, spacing) that allow them to deform elastically under mounting stress. This parameter design enables the ribs to absorb size variations in fitting portions and pockets, transforming the rigid fixing approach into a flexible one that maintains reliable fixation despite manufacturing tolerances
Solution Approach 2:
The base ribs act as pre-designed cushioning elements that absorb dimensional variations and deformation stresses before they can cause inappropriate fixing states. By incorporating these elastic ribs in advance, the patent prevents the propagation of size inaccuracies from the fitting portions and pockets to the overall fixing reliability
2Measurement precision
If the attachment unit has rigid base ribs for stable positioning, then the positioning accuracy is improved, but the tolerance for positional variations is reduced making correction difficult
Solution Approach 1:
The base ribs are designed as dynamic, elastic elements rather than rigid static structures. They can deform to accommodate positional variations during mounting, providing tolerance for misalignment. Once the attachment unit is properly positioned, the ribs maintain stable contact, achieving both positioning accuracy and ease of correction through their elastic properties
3Reliability
If the fitting portions and pockets are manufactured with high precision, then the fixed state stability is improved, but the manufacturing cost and complexity increase
Solution Approach 1:
Instead of requiring high precision in the fitting portions and pockets, the patent changes the parameter approach by introducing base ribs with specific elastic parameters. These ribs compensate for dimensional variations, allowing the use of standard manufacturing tolerances while maintaining stable fixation, thereby reducing manufacturing complexity and cost
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 configuration maintains a stable fixed state for the loudspeaker, allows easy insertion into structures, and suppresses resonance, ensuring a secure and stable attachment while allowing for simple operation during mounting.
Implementation Method 1
the attachment unit absorbs variation in size and the like due to the deformation of the first base rib and the second base rib
Data Source
AI summary
A loudspeaker includes a diaphragm, a frame, an attachment unit, and a fixing member. The frame has a front surface, a mounting surface disposed on a side opposite to the front surface, and a wall surface disposed in a standing manner from the mounting surface. And the frame holds an outer peripheral edge of the diaphragm. The attachment unit includes: a base portion having a top surface facing the mounting surface, a bottom surface on a side opposite to the top surface, a first side surface facing the wall surface, and a second side surface disposed on a side opposite to the first side surface; a first base rib projecting toward the wall surface from the first side surface; a second base rib projecting from the second side surface and extending to the top surface; and a locking portion disposed on a side near the bottom surface of the base portion. The fixing member penetrates the frame from the front surface to the mounting surface and is fixed to the base portion by screwing.