Built-In Refrigerator Guide Rail Installation to Reduce Alignment Skew

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Solution Overview

Problem

The installation of built-in refrigerators is challenging due to uneven stress causing the appliance to skew and move in a winding manner, making it difficult to align properly within the installation space.

Innovation Solution

An installation device with a fixing frame, guide blocks, and pulley assemblies that match with a pre-installed guide rail on the ground, allowing the refrigerator to move in a fixed direction, reducing friction, and an auxiliary installation assembly that adjusts the path and position for smooth alignment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the refrigerator is pushed directly into the installation space from the front, then the installation process can be started, but the box body skews and moves in a winding manner due to uneven stress

Engineering Contradiction:
Improveinstallation easeVSAvoidalignment precision
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

The patent introduces guide rails and guide blocks as intermediary components between the refrigerator box body and the installation space. The guide rails are pre-installed on the ground, and the guide blocks are attached to the bottom of the refrigerator. These intermediaries constrain the movement path, ensuring the refrigerator moves in a straight line during installation without skewing, thereby resolving the contradiction between ease of operation and alignment precision

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The guide rails are pre-installed on the ground before the refrigerator is moved into place. This preliminary action creates a predetermined path that guides the refrigerator's movement, preventing skewing during the installation process and ensuring proper alignment without requiring complex real-time adjustment

Inventive Principle:
Principle #10Preliminary action

2Productivity

If the refrigerator is pushed into the installation space, then the installation can be completed, but the process is time-consuming and labor-intensive due to the need for careful alignment

Engineering Contradiction:
Improveinstallation speedVSAvoidinstallation difficulty
Core Design Contradiction:
ProductivityVSEase of operation

Solution Approach 1:

The guide blocks with grooves that fit onto the guide rails act as intermediaries that simplify the installation process. They automatically guide the refrigerator along the correct path, eliminating the need for manual alignment adjustments and reducing both time and labor requirements while maintaining ease of operation

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The installation device is segmented into separate components: guide rails fixed to the ground, guide blocks attached to the refrigerator, and pulley assemblies for friction reduction. This segmentation allows each component to perform its specific function independently, streamlining the overall installation process and improving productivity

Inventive Principle:
Principle #1Segmentation

3Manufacturing precision

If the refrigerator moves during installation, then it needs to be positioned accurately, but uneven stress causes the box body to skew making the process difficult

Engineering Contradiction:
Improvepositioning accuracyVSAvoidinstallation complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The guide blocks with their grooves serve as intermediaries that interface between the refrigerator and the guide rails. This simple mechanical interface ensures accurate positioning through the constraint of the groove-rail fit, achieving high positioning accuracy without complex positioning mechanisms or multiple adjustment steps

Inventive Principle:
Principle #24Intermediary (Mediator)

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

Facilitates easy, quick, and labor-saving installation by ensuring the refrigerator moves in a straight line, reducing installation difficulty and improving alignment with the cabinet, while allowing for level adjustment and aesthetic alignment.

Implementation Method 1

the groove is configured to match a guide rail portion pre-installed on the ground where the installation space is located, to limit the refrigerator to move in the front-back direction

Methodology Applied
Scientific EffectMechanical constraint through groove-rail matching:

Implementation Method 2

a plurality of pulley assemblies disposed in the intervals between the plurality of guide blocks and configured to slide along the surface of the guide rail portion to decrease frictional resistance generated when the refrigerator moves

Methodology Applied
Scientific EffectFriction reduction through pulley mechanism: Pulley

Data Source

PatentUS12092389B2Built-in refrigerator and installation device and auxiliary installation assembly therefor
Publication Date: 2024.09.17 QINDAO HAIER REFRIGERATOR CO LTD
  • US12092389B2 patent drawing
  • US12092389B2 patent drawing
  • US12092389B2 patent drawing

AI summary

An installation device for a built-in refrigerator, comprising: a fixing frame, provided on a bottom plate of a refrigerator in a front-back extension direction of the refrigerator; and at least one guide block, disposed on the fixing frame, the bottom of the guide block being provided with a groove parallel to the front-back extension direction of the refrigerator, and the groove being configured to match a guide rail portion pre-installed on the ground where an installation space is located, to limit the refrigerator to move in the front-back direction, so that the refrigerator can move backward along a preset path to reach an installation position.