Refrigerator Door Basket Height Adjustment With Rack-and-Pinion
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Solution Overview
Problem
Conventional refrigerators lack an efficient mechanism for adjusting the height of baskets on doors without requiring their removal, which limits user convenience and can result in baskets suddenly descending due to their own weight.
Innovation Solution
The implementation of a coupling member system with a rack gear and pinion gear interaction, allowing baskets to be adjusted in height without detaching from the doors, and featuring a mechanism to prevent sudden descent through elastic support and guided movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If baskets are fixed on the door without adjustment mechanism, then structure is simple, but user convenience deteriorates and baskets may suddenly descend
Solution Approach 1:
The basket positioning system transitions from a fixed static structure to a dynamic adjustable mechanism. The coupling member with hook end can be selectively engaged or disengaged from the guide part, allowing the basket to move between fixed positions at different heights while maintaining structural simplicity when not in use.
Solution Approach 2:
The coupling mechanism is divided into separate functional components: the coupling member with hook end attached to the basket, and the guide part with engagement features attached to the door. This segmentation allows independent optimization of each component and simplifies the overall structure while enabling height adjustment functionality.
2Ease of operation
If baskets are made detachable for adjustment, then ease of adjustment improves, but reliability deteriorates due to potential sudden descent
Solution Approach 1:
The guide part includes engagement features (such as protrusions or stops) that prevent the hook end from disengaging accidentally during normal use. This preliminary protective design counteracts the potential harmful effect of sudden basket descent before it can occur, ensuring reliable positioning while maintaining adjustability.
Solution Approach 2:
The coupling member acts as an intermediary between the basket and the door structure. It provides a controlled connection mechanism that allows intentional detachment for adjustment while preventing unintentional detachment through proper engagement design, thus mediating between the needs for adjustability and stability.
3Adaptability or versatility
If multiple guide parts are provided for height adjustment, then adaptability improves, but device complexity increases
Solution Approach 1:
The guide part is designed with multiple engagement positions that can serve different height adjustment needs. The same guide part structure provides multiple functional positions along its length, allowing a single component to fulfill multiple positioning functions rather than requiring separate components for each height level.
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
Enables convenient height adjustment of baskets on refrigerator doors while stabilizing their movement to prevent sudden descent, enhancing user experience and safety.
Implementation Method 1
an elastic member (159) supporting the coupling member (150)
Implementation Method 2
a rack gear (124) provided on each of the first guide parts (120), and a pinion gear (182) engaged with the rack gear (124)
Data Source
AI summary
Provided is a refrigerator. The refrigerator includes a main body defining a storage compartment, a refrigerator door for opening or closing the storage compartment, and a basket height-adjustably provided on the refrigerator door.