Display Rack Roller Base Structure for Bend-Resistant Handling
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Solution Overview
Problem
Existing article moving devices for display racks lack sufficient strength and flexibility, often bending or suffering damage when dropped or carried, and fail to prevent scattering of roller members due to inadequate material properties and design.
Innovation Solution
The article moving device features a base member and cover member made from materials with specific flexural modulus and tensile strain properties, combined with a beam-like peripheral wall section, which suppresses movement and enhances structural integrity, allowing for excellent strength and flexibility even with reduced thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the base member is made thinner to reduce weight and improve ease of handling, then the ease of operation is improved, but the strength and resistance to bending are reduced
Solution Approach 1:
The base member is made from a composite material having specific physical properties (flexural modulus of 2500-4000 MPa, first parameter of 7.00-18.00, second parameter of 2.00-10.00) that combines high strength with flexibility, allowing the member to maintain structural integrity while being thin enough for easy handling. This composite material enables the base member to resist bending and damage during dropping or carrying without requiring increased thickness.
2Strength
If the base member is made from materials with higher flexural modulus and strength to prevent bending and damage, then the strength is improved, but the flexibility and ease of handling are reduced
Solution Approach 1:
The invention specifies precise parameter ranges for the base member material: flexural modulus of 2500-4000 MPa, first parameter (flexural modulus×yield stress in tension×thickness/density/100000) of 7.00-18.00, and second parameter (first parameter×nominal tensile strain at break/100) of 2.00-10.00. These parameter changes enable the material to achieve optimal balance between strength and flexibility, preventing bending and damage while maintaining ease of handling.
3Reliability
If the roller members are securely fixed to prevent scattering, then the reliability is improved, but the ease of repair and replacement are reduced
Solution Approach 1:
The cover member is designed to be detachably attached to the base member, allowing the roller members to be securely fixed during operation (improving reliability) while enabling easy removal and replacement when needed (maintaining ease of repair). This dynamic attachment system transitions from a fixed state during use to a removable state for maintenance.
4Strength
If the base member is designed with increased thickness to prevent bending, then the strength is improved, but the weight and device complexity increase
Solution Approach 1:
The base member uses a composite material with specific physical properties (flexural modulus of 2500-4000 MPa, first parameter of 7.00-18.00, second parameter of 2.00-10.00) that provides high strength-to-weight ratio. This allows the base member to achieve sufficient strength without increasing thickness, thereby avoiding increased weight while maintaining resistance to bending and damage.
Data Source
AI summary
An article moving device includes a plurality of roller members, a base member which has a bottom plate section and a peripheral wall section and accommodates the plurality of roller members, and a plate-shaped cover member which is detachably attached to the peripheral wall section so as to cover an opening section surrounded by the peripheral wall section, wherein the base member is formed of a material having a flexural modulus of 2500 MPa to 4000 MPa, a first parameter of 7.00 to 18.00, as calculated by the formula: flexural modulus (MPa)×yield stress in tension (MPa)×thickness (mm)/density (g/cm3)/100000, and a second parameter of 2.00 to 10.00, as calculated by the formula: first parameter×nominal tensile strain at break (%)/100.