Oblique Rib Support Foot for Electronic Device Vibration Damping

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Solution Overview

Problem

Existing support feet for electronic devices are not effective in providing superior anti-vibration properties across the entire frequency range, as they fail to adequately inhibit resonance and absorb vibrations efficiently.

Innovation Solution

A support foot design featuring a cylindrical outer shell with oblique ribs that are angled relative to the radial direction, combined with straight ribs and an intermediate rib structure, which enhances vibration absorption by converting energy into heat, thereby improving anti-vibration properties.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If parallel ribs are used in the support foot, then resonance can be inhibited at specific frequencies, but anti-vibration properties cannot be improved across the entire frequency range

Engineering Contradiction:
Improveanti-vibration propertiesVSAvoidfrequency range coverage
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent applies asymmetry by changing the rib configuration from parallel to oblique angles relative to the radial direction. This asymmetric arrangement creates multiple resonance frequencies across different frequency ranges, allowing the support foot to dampen vibrations more effectively across a broader spectrum rather than at a single frequency.

Inventive Principle:
Principle #4Asymmetry

Solution Approach 2:

The patent changes the geometric parameters of the rib structure by introducing oblique angles and varying rib configurations. This parameter modification alters the resonance characteristics of the support foot, enabling it to achieve superior anti-vibration properties across the entire frequency range by tuning the structural parameters to optimize vibration damping at multiple frequencies.

Inventive Principle:
Principle #35Parameter changes

2Ease of manufacture

If the support foot structure is simplified, then manufacturing is easier, but vibration absorption efficiency is reduced

Engineering Contradiction:
Improvemanufacturing simplicityVSAvoidvibration energy absorption
Core Design Contradiction:
Ease of manufactureVSLoss of energy

Solution Approach 1:

The patent introduces curved surfaces and oblique rib configurations instead of straight parallel lines. This curvature and angular variation increases the complexity of vibration paths and energy dissipation mechanisms, allowing the structure to absorb vibration energy more effectively across broader frequencies while maintaining manufacturability through standard molding techniques.

Inventive Principle:
Principle #14Spheroidality (Curvature)

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

The support foot effectively attenuates vibrations across a broader frequency range, providing superior anti-vibration performance by utilizing the oblique ribs to convert vibration energy into thermal energy, thus ensuring better stability and reduced noise in electronic devices.

Implementation Method 1

the rib structure comprises an oblique rib that is, in a planar view, oblique with respect to a radial direction in relation to a central axis of the outer peripheral wall portion

Methodology Applied
Scientific EffectVibration energy conversion to thermal energy: Viscous Heating

Implementation Method 2

The support foot effectively attenuates vibrations across a broader frequency range, providing superior anti-vibration performance by utilizing the oblique ribs to convert vibration energy into thermal energy

Methodology Applied
Scientific EffectVibration attenuation: Damping

Data Source

PatentUS10570981B2Support foot for electronic device and electronic device
Publication Date: 2020.02.25 YAMAHA CORP
  • US10570981B2 patent drawing
  • US10570981B2 patent drawing
  • US10570981B2 patent drawing

AI summary

An object of the present invention is to provide a support foot for an electronic device having superior anti-vibration properties. A support foot for an electronic device according to an aspect of the present invention comprises: an attachment portion to be fixed to an electronic device main body; an outer peripheral wall portion cylindrically shaped and provided on an outer periphery of the attachment portion; and a rib structure provided between the attachment portion and the outer peripheral wall portion, wherein the rib structure comprises an oblique rib that is, in a planar view, oblique with respect to a radial direction in relation to a central axis of the outer peripheral wall portion.