Portable Speaker System with Handle Cable for Stereophonic Sound

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Solution Overview

Problem

Portable speakers are limited in sound quality due to design constraints that prevent stereophonic, spatial sound and are not durable enough for transportation, often lacking protective carrying cases.

Innovation Solution

A portable dual speaker system with separate speaker portions connected by a handle cable, allowing for stereophonic sound and easy carrying, which can convert into a compact looped unit for enhanced portability and protection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Weight of moving object

If portable speakers are designed as compact single speaker devices, then portability is maintained, but sound quality deteriorates due to inability to provide stereophonic, spatial sound

Engineering Contradiction:
ImproveportabilityVSAvoidsound quality
Core Design Contradiction:
Weight of moving objectVSReliability

Solution Approach 1:

The speaker system is divided into two separate speaker portions (first speaker portion and second speaker portion) connected by a handle cable. Each portion contains its own speaker driver, allowing them to be positioned apart to create stereophonic sound fields while remaining connected as a portable unit. This segmentation enables spatial sound distribution without compromising portability.

Inventive Principle:
Principle #1Segmentation

2Device complexity

If portable speakers are designed without protective carrying cases, then device complexity is reduced, but durability deteriorates due to physical abuse during transportation

Engineering Contradiction:
Improvestructure simplicityVSAvoiddurability
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The handle cable serves dual functions: it connects the two speaker portions to enable stereophonic sound, and it acts as an integrated carrying handle that protects the speaker drivers during transportation. The speaker drivers are positioned at opposite ends of the system, allowing them to face each other and be protected by the handle cable structure, eliminating the need for separate protective cases.

Inventive Principle:
Principle #5Merging (Combining)

3Volume of moving object

If speaker drivers are placed close together in portable speakers, then portability is maintained, but sound quality deteriorates due to inability to provide spatial separation for stereophonic sound

Engineering Contradiction:
Improvecompact sizeVSAvoidsound quality
Core Design Contradiction:
Volume of moving objectVSReliability

Solution Approach 1:

Instead of separating speaker drivers in the horizontal plane (which would increase width), the design positions them at opposite ends of the system along the handle cable axis. This vertical/linear arrangement allows spatial separation for stereophonic sound while maintaining a compact overall volume that can be easily carried.

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

Data Source

PatentUS9609406B2Speaker system
Publication Date: 2017.03.28 PUMA SE
  • US9609406B2 patent drawing
  • US9609406B2 patent drawing
  • US9609406B2 patent drawing

AI summary

Devices of the invention are portable speakers that provide stereophonic, surround sound. According to certain aspects, a speaker system includes a first speaker portion, a second speaker portion and a cable handle. The first speaker portion includes a first end and a second end, and the second speaker portion includes a third end and a fourth end. The cable handle couples the first end of the first speaker portion and a third end of the second speaker portion. The second end of the first speaker portion is configured to releasably couple to the fourth end of the second speaker portion, thereby forming a looped unit, when coupled, with the first speaker portion, the second speaker portion, and the cable handle.