Microphone Mounting Shaft and Spacer Ring for Cable Routing

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Solution Overview

Problem

Existing microphone fixing methods require multiple screw holes in the desk, leading to poor workability and potential transmission of vibrations, and do not accommodate varying desk thicknesses or allow cable exit without detachment.

Innovation Solution

A microphone fixing device using a support shaft, spacer ring, and nut, where the support shaft is longer than the desk thickness, with a male screw, and the spacer ring has a cable drawing out groove, allowing the cable to be drawn out to the desk's rear surface without detachment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multiple screw holes are opened in the desk for fixing the microphone, then the microphone can be securely fixed, but the workability deteriorates due to multiple holes needed and vibration transmission to the microphone

Engineering Contradiction:
Improvefixing securityVSAvoidworkability
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The fixing device is divided into separate components: a receiver body inserted into one hole, a washer plate with cable insertion hole, and a separate fixing mechanism using male screw and female screw cylinder. This segmentation allows the microphone to be fixed through one hole while the cable passes through a separate hole, improving workability without compromising fixing security

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The receiver body acts as an intermediary component between the desk and the microphone. It includes a cable insertion groove that guides the cable separately from the fixing mechanism, allowing the cable to pass through without interfering with the screw fixing process, thus improving workability while maintaining secure fixing

Inventive Principle:
Principle #24Intermediary (Mediator)

2Adaptability or versatility

If the receiver body is fixed by compressing and expanding the rubber material, then the microphone can be fixed through one hole, but the workability deteriorates due to the need to match shaft length with irregular base thickness and the complexity of preventing co-rotation

Engineering Contradiction:
Improveapplicability to various base thicknessesVSAvoidworkability
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The fixing mechanism uses a male screw and female screw cylinder that can be adjusted in depth, allowing adaptation to various base thicknesses without requiring different receiver body lengths. The screw threads engage with the receiver body and protrude through the lower surface, providing adjustable fixing depth that accommodates irregular base thicknesses while maintaining simple assembly workability

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The male screw and female screw cylinder create an asymmetric engagement mechanism where the male screw inserts into the receiver body from above and the female screw cylinder engages from below. This asymmetric design prevents co-rotation during assembly while allowing easy insertion and removal, improving workability without requiring precise matching of shaft length to base thickness

Inventive Principle:
Principle #4Asymmetry

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

Provides good mounting workability on various thicknesses of bases and allows the microphone cable to be drawn out to the rear surface without detachment, improving ease of installation and reducing vibration transmission.

Implementation Method 1

the spacer ring is made from an elastic body

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS12513444B2Microphone fixing device
Publication Date: 2025.12.30 AUDIO TECHNICA CORP
  • US12513444B2 patent drawing
  • US12513444B2 patent drawing
  • US12513444B2 patent drawing

AI summary

A microphone fixing device includes a support shaft inserted into a fitting hole of a base with the microphone attached to the top end, a spacer ring fitted into the lower end of the support shaft, and a nut screwed onto the support shaft to press the spacer ring to the lower surface of the base, a gap allowing a microphone cable to be inserted is provided between the support shaft and the fitting hole, the spacer ring includes a small diameter part entering into the gap and a large diameter part abutting a lower surface of the base, a cable drawing out groove is formed from the small diameter part to the large diameter part to draw out the microphone cable to the lower surface of the base, and the microphone is fixed to an upper surface of the base via the support shaft by fastening of the nut.