Removable Hinge Cover Assembly for Cleanable Aligned Cooler Doors

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Solution Overview

Problem

Existing door hinges for commercial refrigerators and freezers are difficult to clean and dismantle, lacking easy access to internal components and stability in maintaining door alignment.

Innovation Solution

A double shear hinge design with a flange assembly and strap assembly, featuring removable covers and a cam mechanism for easy disassembly and alignment, along with a thermally insulative cover for moisture resistance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If traditional door hinges are used for commercial refrigerators and freezers, then the structure is simple and easy to manufacture, but the hinges are difficult to clean and dismantle, and internal components are inaccessible

Engineering Contradiction:
Improveease of cleaning and dismantlingVSAvoidhinge structure complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The hinge is divided into separate assemblies (flange assembly, strap assembly, cylinder portion) that can be independently removed and cleaned. The cover can be detached to access internal components, allowing thorough cleaning of all surfaces while maintaining a relatively simple overall structure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The cover is designed to be removable from the strap assembly, extracting the barrier that prevents access to internal components. This allows easy cleaning and maintenance of the hinge mechanism without requiring complete disassembly, balancing accessibility with structural simplicity.

Inventive Principle:
Principle #2Taking out (Extraction)

2Stability of the object's composition

If traditional door hinges are used, then the manufacturing process is simple, but the hinges lack stability in maintaining door alignment

Engineering Contradiction:
Improvedoor alignment stabilityVSAvoidmanufacturing complexity
Core Design Contradiction:
Stability of the object's compositionVSEase of manufacture

Solution Approach 1:

The cam mechanism is pre-configured within the cylinder portion to automatically engage and maintain proper door alignment. This preliminary mechanical arrangement ensures stable door positioning during operation without requiring complex adjustment mechanisms or additional manufacturing steps.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The cam mechanism acts as an intermediary element between the hinge components, providing automatic alignment correction and maintaining stable door positioning. This simple mechanical intermediary achieves alignment stability without complicating the overall manufacturing process.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Object-affected harmful factors

If a covered hinge design is used, then aesthetic appearance and moisture resistance are improved, but access to internal components for cleaning and maintenance is restricted

Engineering Contradiction:
Improvemoisture resistance and aestheticsVSAvoidaccess to internal components
Core Design Contradiction:
Object-affected harmful factorsVSEase of repair

Solution Approach 1:

The cover is designed with dynamic functionality - it can be in a closed position to provide aesthetic coverage and moisture resistance, or opened/removed to allow access to internal components for cleaning and maintenance. This dynamic design resolves the contradiction between protection and accessibility.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The hinge cover incorporates self-service features with built-in attachment and detachment mechanisms that allow easy removal and reattachment without special tools or complex procedures. This enables users to easily access internal components for cleaning while maintaining aesthetic appearance during normal use.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS8020253B1Hinge and hinge cover
Publication Date: 2011.09.20 KASON IND INC
  • US8020253B1 patent drawing
  • US8020253B1 patent drawing
  • US8020253B1 patent drawing

AI summary

There is disclosed a hinge (10) which includes a mounting flange assembly (12) pivotally coupled to a strap assembly (15). The mounting flange assembly includes a mounting flange (16) having four mounting holes (17) therethrough, a lower hinge barrel (18) extending from the mounting flange, and an upper hinge barrel (19) extending from the mounting flange. The strap assembly includes a strap (31) extending from a cylinder portion (32). The hinge also includes a main cover (57) covering the strap assembly, an upper flange cover (28) covering the upper hinge barrel, and a lower flange cover (29) covering the lower hinge barrel.