Support frame for sliding adjustment shelves of refrigerated cabinet

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Solution Overview

Problem

Existing shelf support systems in refrigerated cabinets face issues with deformation, low bearing capacity, instability, and safety concerns due to the design of positioning holes and elastic clamping tongues, leading to potential shelf instability and item displacement.

Innovation Solution

A support frame with a fixed column featuring positioning bosses and a locking unit, including a pressing engagement member, rotating bolt, and elastic member, which provides a stable and durable structure for shelf adjustment, preventing sliding and falling by ensuring secure locking and improved bearing capacity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If positioning holes are used to fix the bearing frame, then the bearing frame can be adjusted to different positions, but the positioning holes deform easily under heavy weight, affecting service life

Engineering Contradiction:

Improveadjustability of bearing frame positionVSAvoidstrength of positioning holes

Core Design Contradiction:

Adaptability or versatilityVSStrength

Solution Approach 1:

The fixed frame is divided into multiple positioning holes at different positions, allowing the bearing frame to be segmented and locked at various locations along the rail, providing adjustability while distributing the structural load across multiple points

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The fixed frame is made from composite materials with enhanced strength and wear resistance, allowing the positioning holes to maintain structural integrity under heavy loads while still enabling adjustable positioning functionality

Inventive Principle:

Principle #40Composite materials

2Adaptability or versatility

If positioning holes are used for fixing, then the bearing frame can be repositioned, but the positioning holes have unstable structure and small bearing capacity, making them easily damaged

Engineering Contradiction:

Improverepositionability of bearing frameVSAvoidstructural stability of positioning holes

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The locking mechanism uses an elastic clamping tongue that can dynamically adapt to the positioning holes, providing a secure lock when engaged while allowing easy release for repositioning, thus maintaining both reliability and adaptability

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The fixed frame uses composite materials that provide both the structural stability needed for reliable positioning and the durability to withstand repeated engagement and repositioning operations

Inventive Principle:

Principle #40Composite materials

3Ease of manufacture

If the bearing frame has a simple structure, then it is easy to manufacture, but the bearing frame has small bearing capacity and the shelf is easy to slide down

Engineering Contradiction:

Improvesimplicity of bearing frame structureVSAvoidbearing capacity of bearing frame

Core Design Contradiction:

Ease of manufactureVSStrength

Solution Approach 1:

The bearing frame structure is segmented into multiple support points and locking positions, allowing the shelf weight to be distributed across several locations, increasing bearing capacity while maintaining a relatively simple overall structure that is easy to manufacture

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The bearing frame incorporates curved or rounded structural elements that provide both structural strength to increase bearing capacity and smooth surfaces that prevent the shelf from sliding down, while maintaining manufacturability

Inventive Principle:

Principle #14Spheroidality (Curvature)

4Ease of operation

If the elastic clamping tongue is used for locking, then the bearing frame can be easily detached and repositioned, but the elastic clamping tongue loosens over time, causing the shelf to become unstable

Engineering Contradiction:

Improveease of detaching and repositioning bearing frameVSAvoidlocking stability of elastic clamping tongue

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The elastic clamping tongue is designed to periodically engage with the positioning holes at regular intervals along the rail, maintaining consistent locking force through repeated use while allowing easy periodic release for repositioning, thus balancing ease of operation with long-term reliability

Inventive Principle:

Principle #19Periodic action

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 frame enhances stability and safety by maintaining the shelf's position, preventing deformation, and ensuring the shelf does not slide down, thus improving the overall durability and service life of the support system.

Implementation Method 1

a rear surface of the pressing part leans against the support body through the elastic member (6), and when the support body (2) approaches the positioning boss (11), the clamping part (42) can stretch into a positioning space (7)

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentUS11725872B2Support frame for sliding adjustment shelves of refrigerated cabinet

Publication Date: 2023.08.15 ZHONG SHANG HAILE ELECTRIC APPLIANCE CO LTD

AI summary

A support frame for sliding adjustment shelves of a refrigerated cabinet comprised at least a fixed column, at least a support body and at least a locking unit, the fixed column is provided with a plurality of positioning bosses spaced apart from each other by a predetermined distance along its length direction, the support body can be locked on the positioning boss of the fixed column through the locking unit, and when the locking unit is released, the support body can slide along the fixed column. Thus, the invention has a larger bearing capacity and a more stable structure, and is more durable.