Speaker Device Nested Passive Radiators Air Flow Gap
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional speaker devices face challenges in playing bass sounds effectively due to their large cabinet requirements, leading to vibration issues and increased heat generation, especially in portable speaker devices.
Innovation Solution
The speaker device incorporates a housing with a first and second speaker unit, passive radiators, and a structure that forms a gap for air flow, allowing controlled air flow and phase manipulation to reduce vibration and heat generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a large cabinet capacity is used to play bass bands, then bass sound quality is improved, but device size and portability deteriorate
Solution Approach 1:
The patent implements nested passive radiators where the second passive radiator is positioned inside the housing and the first passive radiator is positioned inside the second passive radiator. This nested configuration allows multiple radiating elements to occupy minimal space while collectively producing bass sounds, resolving the contradiction between bass quality and device size.
Solution Approach 2:
The patent utilizes the vertical dimension by stacking passive radiators at different heights within the housing (first passive radiator at a first height, second passive radiator at a second height). This vertical arrangement enables bass production without increasing the horizontal footprint of the device.
2Object-generated harmful factors
If air flow is restricted to reduce vibration, then vibration is reduced, but heat dissipation deteriorates
Solution Approach 1:
The patent divides the air flow control into multiple independent gaps: a first gap between the first passive radiator and the housing, and a second gap between the second passive radiator and the housing. This segmentation allows selective control of air flow paths - some gaps can be designed to reduce vibration while others maintain heat dissipation.
Solution Approach 2:
Different gaps are designed with different characteristics tailored to their specific functions. The gap configuration near passive radiators is optimized for vibration reduction, while other air flow paths within the housing are designed to facilitate heat dissipation from speaker units and electronic components.
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 enhances the ability to play bass sounds in smaller devices by managing air flow and phase, reducing vibration and heat generation, thereby improving sound quality and device performance.
Implementation Method 1
at least one structure disposed inside the housing, wherein the one of the at least one structure is disposed between the first passive radiator and the second passive radiator and disposed to form a gap, through which air flows, between the structure and at least one of the housing, the first speaker unit, the second speaker unit, and another of the at least one structure
Data Source
AI summary
A speaker device includes a housing, first speaker unit disposed at a front surface of the housing, a second speaker unit disposed at the front surface, a first passive radiator disposed at the front surface, a second passive radiator disposed at a rear surface of the housing, and at least one structure disposed inside the housing, where the one of the at least one structure is disposed between the first passive radiator and the second passive radiator and disposed to form a gap, through which air flows, between the structure and at least one of the housing, the first speaker unit, the second speaker unit, and another of the at least one structure.