Loudspeaker Damper Weaving with Conductive Warps

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Solution Overview

Problem

Traditional weaving methods for loudspeaker dampers are time-consuming, labor-intensive, prone to structural damage, and result in inconsistent resonance efficiency due to misalignment and poor heat dissipation, leading to reduced service life and varying sound quality.

Innovation Solution

A simplified two-step weaving method where traditional and conductive warps are aligned vertically and wefts pass alternately over and under them to form the damper, ensuring precise positioning and structural integrity, reducing labor waste and enhancing heat dissipation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If traditional weaving method with manual division and stitching is used, then the damper can be formed, but the weaving time is long and labor is wasted

Engineering Contradiction:
Improveweaving speedVSAvoidweaving time
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The patent combines the division and stitching operations into a single integrated weaving process. The damper fabric is woven directly in the loom with conductive warps and wefts interlaced simultaneously, eliminating the need for separate manual division and stitching steps. This merging of operations dramatically reduces weaving time and labor requirements while maintaining structural integrity.

Inventive Principle:
Principle #5Merging (Combining)

2Ease of manufacture

If traditional weaving method is used, then the damper can be formed, but the structure of the damper is damaged

Engineering Contradiction:
Improvemanufacturing simplicityVSAvoidstructural integrity
Core Design Contradiction:
Ease of manufactureVSStrength

Solution Approach 1:

The patent performs preliminary arrangement of conductive warps and wefts before the actual weaving process. The conductive elements are positioned in predetermined patterns within the loom, and the weaving process then interlaces them with the damper fabric in a controlled manner. This preliminary positioning ensures that the conductive wires are properly aligned and protected during weaving, preventing structural damage while maintaining manufacturing simplicity.

Inventive Principle:
Principle #10Preliminary action

3Device complexity

If multiple conductive wires are located densely in each group, then the damper can be formed, but heat dissipation is poor

Engineering Contradiction:
Improvewire arrangement complexityVSAvoidheat dissipation
Core Design Contradiction:
Device complexityVSTemperature

Solution Approach 1:

The patent implements local quality variation in the wire arrangement by creating alternating dense and sparse regions. Conductive warps and wefts are interlaced in a pattern that provides localized heat dissipation channels between wire groups. This allows the damper to maintain structural complexity while incorporating thermal management features that prevent overheating in densely wired areas.

Inventive Principle:
Principle #3Local quality

4Ease of manufacture

If conductive wires are interlaced into fabric pieces, then the damper can be formed, but mis-alignment of conductive wires occurs

Engineering Contradiction:
Improvemanufacturing easeVSAvoidwire positioning precision
Core Design Contradiction:
Ease of manufactureVSManufacturing precision

Solution Approach 1:

The patent introduces the loom as an intermediary device that precisely controls the positioning of conductive warps and wefts during the weaving process. The loom's mechanical structure ensures that conductive elements are interlaced with the damper fabric at predetermined locations with high precision, eliminating mis-alignment issues that occur with manual methods while maintaining manufacturing ease through automated loom operation.

Inventive Principle:
Principle #24Intermediary (Mediator)

5Productivity

If weaving steps are simplified, then labor waste is reduced, but positioning accuracy of conductive wires may deteriorate

Engineering Contradiction:
Improveweaving efficiencyVSAvoidpositioning accuracy
Core Design Contradiction:
ProductivityVSManufacturing precision

Solution Approach 1:

The patent replaces manual mechanical positioning with a loom-based mechanical system that automatically positions conductive warps and wefts with high precision. The loom's programmed motion control ensures accurate placement of conductive elements while eliminating the need for labor-intensive manual positioning. This substitution maintains positioning accuracy while dramatically improving weaving efficiency and reducing labor requirements.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS9516422B2Weaving method for a damper of a loudspeaker
Publication Date: 2016.12.06 OHARA HIROSHI
  • US9516422B2 patent drawing
  • US9516422B2 patent drawing
  • US9516422B2 patent drawing

AI summary

A weaving method for a damper of a loudspeaker includes the steps of: a preparation step: providing a plurality of traditional warps and a plurality of conductive warps to extend in a vertical direction; and a weaving step: providing a plurality of wefts to extend in a horizontal direction transversely crossing the vertical direction in such a manner that each of the wefts passes alternately over and under each of the plurality of traditional warps and each of the plurality of conductive warps in order to form the damper.