Vibration Damping Loudspeaker With Injection-Molded Buffer

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Solution Overview

Problem

Current loudspeakers lack a design for buffering between the speaker base and the magnetic assembly, resulting in direct transmission of vibrations to the electronic device casing, causing user discomfort.

Innovation Solution

A vibration damping loudspeaker design that securely couples a connecting member to a sound generating unit and assembles a damping member between the connecting member and the magnetic assembly, forming a buffer to absorb and isolate shocks.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If a single magnetic structure is fixedly assembled to a speaker base without buffering design, then the structure is simple and easy to manufacture, but vibration is directly transmitted to the electronic device casing causing user discomfort

Engineering Contradiction:
Improvevibration transmissionVSAvoidstructure complexity
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

A damping member is introduced as an intermediary element between the speaker base and the magnetic assembly. This damping member absorbs and isolates vibrations, preventing them from being directly transmitted to the electronic device casing. The damping member acts as a mediator that decouples the vibration transmission path while maintaining the structural connection.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The damping member is pre-installed between the speaker base and the magnetic assembly to provide cushioning before vibrations occur. This beforehand cushioning design ensures that when the loudspeaker operates, vibrations are already absorbed and isolated, preventing user discomfort from the outset.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

2Object-affected harmful factors

If damping members are injection molded between the main magnetic plate and connecting members, then shock absorption capability is improved, but manufacturing process complexity increases

Engineering Contradiction:
Improveshock transmissionVSAvoidmanufacturing process
Core Design Contradiction:
Object-affected harmful factorsVSEase of manufacture

Solution Approach 1:

The damping member utilizes injection molding technology, which is a hydraulic/pneumatic process where molten material is injected under pressure into a mold cavity. This allows the damping member to be precisely formed with complex geometries and integrated connection features, achieving excellent shock absorption while maintaining manufacturing efficiency through automated injection molding processes.

Inventive Principle:
Principle #29Pneumatics and hydraulics

3Object-affected harmful factors

If the main magnetic plate is not in direct contact with the connecting members, then a buffer distance is formed to reduce vibration transmission, but assembly precision requirements increase

Engineering Contradiction:
Improvevibration transmissionVSAvoidassembly precision
Core Design Contradiction:
Object-affected harmful factorsVSManufacturing precision

Solution Approach 1:

The design changes the physical parameter of contact distance between the main magnetic plate and connecting members. By maintaining a specific buffer distance through the damping member, vibration transmission is reduced. The injection molding process ensures this distance is precisely controlled, transforming a potential precision challenge into a manufacturable parameter.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The damping member serves as an intermediary that maintains the required buffer distance between the main magnetic plate and connecting members. This mediator ensures the precise spacing needed for vibration isolation while being easily manufactured through injection molding, eliminating direct contact and reducing vibration transmission.

Inventive Principle:
Principle #24Intermediary (Mediator)

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

Prevents user discomfort by absorbing and isolating shocks during loudspeaker operation, enhancing the loudspeaker's shock absorption and isolation capabilities.

Implementation Method 1

the damping member forms a buffer between the sound generating unit and the magnetic assembly, achieves effects of shock absorption and shock isolation

Methodology Applied
Scientific EffectVibration damping: Damping

Data Source

PatentUS20250240558A1Vibration damping loudspeaker
Publication Date: 2025.07.24 FORTUNE GRAND TECH
  • US20250240558A1 patent drawing
  • US20250240558A1 patent drawing
  • US20250240558A1 patent drawing

AI summary

A vibration damping loudspeaker includes a sound generating unit, a magnetic assembly, a connecting member and a damping member. The connecting member is symmetrically arranged at the sound generating unit. The damping member is symmetrically injection molded between the magnetic assembly and the connecting member. A main magnetic plate is not in direct contact with the connecting member and thus a distance is formed in between. Thus, in the vibration damping loudspeaker of the present disclosure, by securely coupling the connecting member to the sound generating unit and securely assembling the damping member between the connecting member and the magnetic assembly, the damping member forms a buffer between the sound generating unit and the magnetic assembly, so as to achieve effects of shock absorption and shock isolation during the operation of the vibration damping loudspeaker to prevent discomfort of a user during use of an electronic device.