Angled Speaker Surround Interface for Compact Diaphragm Expansion

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Solution Overview

Problem

Existing speaker designs require larger dimensions due to traditional horizontal or vertical frame/surround attachment interfaces, leading to bulkier speakers and compromised sound quality.

Innovation Solution

An angled interface between the surround and frame, ranging from 10° to 80° relative to the speaker axis, allowing for a larger diaphragm without increasing speaker dimensions, and incorporating a groove to manage adhesive excess.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a horizontal frame/surround attachment interface is used, then the attachment is secure, but the frame must be wider resulting in larger speaker dimensions

Engineering Contradiction:
Improveattachment securityVSAvoidframe width
Core Design Contradiction:
ReliabilityVSLength of stationary object

Solution Approach 1:

The patent transitions from traditional horizontal or vertical attachment interfaces to an angled interface (10°-80° relative to the speaker axis). This dimensional change in the attachment interface orientation allows the adhesive bond to distribute forces more effectively, achieving secure attachment without requiring increased frame width or vertical height.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Reliability

If a vertical frame/surround attachment interface is used, then the attachment is secure, but the frame must stretch vertically resulting in higher profile and bulkier speaker

Engineering Contradiction:
Improveattachment securityVSAvoidframe height
Core Design Contradiction:
ReliabilityVSLength of moving object

Solution Approach 1:

The patent employs an angled attachment interface that neither requires horizontal expansion nor vertical stretching. By orienting the interface at 10°-80° relative to the speaker axis, the design achieves secure attachment while maintaining a compact vertical profile, directly resolving the contradiction between attachment security and frame height.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Reliability

If a larger diaphragm is implemented, then sound quality improves, but speaker dimensions must increase

Engineering Contradiction:
Improvesound qualityVSAvoidspeaker volume
Core Design Contradiction:
ReliabilityVSVolume of moving object

Solution Approach 1:

The angled attachment interface enables the use of larger diaphragms for improved sound quality without proportionally increasing overall speaker volume. The efficient force distribution at the angled interface (10°-80° relative to the speaker axis) allows the structure to support larger diaphragms while maintaining compact dimensions through optimized stress pathways.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS20250344007A1Angled surround attachment
Publication Date: 2025.11.06 ROCKFORD CORP
  • US20250344007A1 patent drawing
  • US20250344007A1 patent drawing
  • US20250344007A1 patent drawing

AI summary

Systems, methods, and devices are provided for an audio device comprising: An audio device, comprising a frame, a diaphragm, and a surround comprising a first end and a second end, wherein the first end is coupled to the diaphragm, and wherein the second end comprises a first interface coupled to the frame, the first interface comprising an angled surface having an angle in the range of about 10° to about 80° relative to an axis of the audio device.