Passive Radiator S-Shaped Surround for Bass Quality
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Passive radiators in speaker boxes often suffer from unbalanced tension forces due to the design of the surround, leading to a compromised bass effect.
Innovation Solution
The passive radiator design incorporates a surround with a first arc portion connected to the frame and a second arc portion connected to the vibrating member, forming an S shape, with varying thicknesses and reinforcing ribs to balance tension forces, enhancing the return force and bass effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the surround is designed with uniform thickness and structure, then the manufacturing is simple, but the tension force becomes unbalanced leading to poor bass effect
Solution Approach 1:
The patent applies local quality by varying the thickness of the surround at different locations. Specifically, the first arc portion (outer arc) has a greater thickness than the second arc portion (inner arc), creating non-uniform structural properties that balance the tension forces during vibration while maintaining reasonable manufacturing complexity.
2Reliability
If the surround thickness is increased to balance tension forces, then the bass effect is improved, but the manufacturing complexity increases
Solution Approach 1:
Instead of uniformly increasing the entire surround thickness, the patent selectively increases thickness only in the first arc portion where it is needed to balance tension forces. This localized approach improves bass effect while minimizing the overall increase in structural complexity and manufacturing difficulty.
3Reliability
If the surround structure is modified to improve bass effect, then the bass effect is enhanced, but the manufacturing process becomes more difficult
Solution Approach 1:
The patent implements a selectively thickened first arc portion with reinforcing ribs, creating a structurally optimized surround that balances tension forces. This localized modification achieves improved bass effect while keeping the overall manufacturing process relatively simple, as only specific regions require additional processing.
Solution Approach 2:
The patent employs an S-shaped surround configuration with curved arc portions instead of straight lines. The first arc portion and second arc portion form smooth transitions that distribute stresses more effectively, improving bass response while maintaining manufacturability through standard forming processes.
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 balances the tension forces between the surround's arc portions, resulting in a more balanced return force and significantly improved bass effect when the vibrating member vibrates.
Implementation Method 1
The surrounding comprises a first arc portion and a second arc portion. The first arc portion is connected to the frame and the second arc portion is connected to the vibrating member. The first arc portion and the second arc portion are connected to form an S shape.
Data Source
AI summary
A passive radiator includes a frame, a vibrating member, a surround and a plurality of strengthening ribs. The vibrating member is disposed in the frame. The surround includes a first arc portion and a second arc portion. The first arc portion is connected to the frame. The second arc portion is connected to the vibrating member. The first arc portion and the second arc portion are connected to form an S shape. The strengthening ribs are connected to the first arc portion and the second arc portion. A thickness of the strengthening rib corresponding to the first arc portion is larger than a thickness of the strengthening rib corresponding to the second arc portion. Furthermore, the passive radiator may include a plurality of reinforcing ribs connected to the first arc portion. Moreover, a thickness of the first arc portion may be larger than a thickness of the second arc portion.