Mixed-Hardness Display Stand Casters for Quiet Stable Rolling

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Display devices with casters face issues of increased rolling noise when casters are hard and deformation when they are soft, affecting mobility and stability.

Innovation Solution

Incorporating a combination of casters with varying hardness, where at least one caster has a higher hardness and another with lower hardness, arranged to reduce rolling noise and prevent deformation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-generated harmful factors

If the hardness of casters is increased, then rolling noise is reduced, but caster deformation increases

Engineering Contradiction:

Improverolling noiseVSAvoidcaster deformation

Core Design Contradiction:

Object-generated harmful factorsVSReliability

Solution Approach 1:

The base is divided into multiple caster units, with at least one caster having different hardness from the others. This segmentation allows different casters to perform different functions: some provide stability while others reduce rolling noise

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different casters are assigned different hardness values based on their specific positions and functions. Casters near the center of gravity use higher hardness for stability, while other casters use lower hardness to reduce rolling noise, creating local quality differences throughout the base

Inventive Principle:

Principle #3Local quality

2Object-generated harmful factors

If the hardness of casters is decreased, then rolling noise is suppressed, but caster deformation increases

Engineering Contradiction:

Improverolling noiseVSAvoidcaster stability

Core Design Contradiction:

Object-generated harmful factorsVSStability of the object's composition

Solution Approach 1:

The caster system is segmented into multiple units with different hardness characteristics. This allows the system to simultaneously achieve noise suppression through softer casters while maintaining stability through harder casters positioned strategically

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Softer casters with lower hardness are strategically positioned to reduce rolling noise, while harder casters are positioned to maintain stability. This local differentiation of material properties allows simultaneous optimization of both noise suppression and stability

Inventive Principle:

Principle #3Local quality

3Stability of the object's composition

If all casters have high hardness, then stability is improved, but rolling noise increases

Engineering Contradiction:

Improvedisplay device stabilityVSAvoidrolling noise

Core Design Contradiction:

Stability of the object's compositionVSObject-generated harmful factors

Solution Approach 1:

The base is segmented into multiple caster units with differentiated hardness values. This segmentation enables the system to achieve both stability and noise reduction by assigning different hardness characteristics to different caster positions

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Harder casters are positioned to provide stability support, while softer casters are positioned to reduce rolling noise. This local quality differentiation allows the system to simultaneously achieve both stability and noise suppression

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS20230380089A1Display device and stand

Publication Date: 2023.11.23 PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD

AI summary

A display device includes a body that displays an image and a base that supports the body in a state where the base is placed on a floor surface. The base includes a plurality of casters that roll on the floor surface. The plurality of casters include at least one first caster and at least one second caster having a hardness lower than a hardness of the first caster.