Hidden-Drive Refrigerator Shelf for Flexible Height Adjustment
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Solution Overview
Problem
Conventional refrigerators lack efficient height-adjustable shelf mechanisms, limiting user flexibility in optimizing storage space for varying food sizes and types.
Innovation Solution
A refrigerator shelf apparatus featuring a drive unit, guide member, and controller that allows shelves to be moved upward and downward using a pinion and gear assembly, enabling secure mounting and easy adjustment of shelf positions through user-operated buttons.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a height-adjustable shelf mechanism is added to improve storage flexibility, then adaptability is improved, but device complexity increases due to the drive unit and mechanical components
Solution Approach 1:
The drive unit is extracted from the visible shelf structure and relocated to the rear wall of the refrigerator compartment. This separation allows the shelf to maintain a simple, clean appearance while the adjustment mechanism remains functional but hidden, resolving the contradiction between adaptability and device complexity by isolating the complex components to a non-visible area.
Solution Approach 2:
The drive unit is nested within the rear wall structure of the refrigerator compartment, with the motor assembly and gear mechanism integrated into the wall panel. This nesting approach conceals the complex mechanical components within the existing structural framework, maintaining storage flexibility while minimizing the visual and spatial impact of the added complexity.
2Ease of operation
If a drive unit with motor assembly is installed to enable shelf movement, then ease of operation is improved, but weight of stationary object increases
Solution Approach 1:
A rack mechanism serves as an intermediary between the motor assembly and the shelf. The motor drives the rack, which in turn moves the shelf vertically through guide members. This intermediary mechanism allows the motor to be positioned in the rear wall (adding minimal weight there) while still providing easy operation for shelf adjustment, as the user only needs to interact with simple control buttons on the shelf front.
3Manufacturing precision
If guide members and rack mechanisms are added to enable precise shelf positioning, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
Instead of having the shelf directly driven by the motor, the system inverts the traditional approach by having the motor drive a rack that then moves the shelf through guide members. The guide members constrain the motion to a precise vertical path, while the rack provides the driving force. This inversion allows precise positioning through the geometric constraints of the guide-rack interface rather than through complex control mechanisms.
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 flexible storage space adjustment by allowing shelves to be moved to desired positions, enhancing storage capacity and ease of use, while also enabling easy removal and cleaning of the shelves.
Implementation Method 1
a pinion and gear assembly
Implementation Method 2
a pinion and gear assembly that allows the shelf to be moved upward and downward
Data Source
AI summary
Provided are a refrigerator and a refrigerator shelf apparatus configured with a shelf detachably mounted to a drive unit, and the drive unit capable of driving the shelf upward and downward according to electronic controlling by a controller provided on the shelf.