Rail-Less Drawer Assembly to Prevent Basket Tilting
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Solution Overview
Problem
Rail-less drawer structures face issues with the sliding basket tilting downward when pulled outward, leading to instability and potential escape from the carrier frame.
Innovation Solution
A drawer assembly comprising a carrier frame with a panel member, front and rear open frames, and supporting rods, along with a sliding basket equipped with limiter members and stop portions to prevent excessive movement and enhance stability, allowing the basket to slide smoothly without tilting or escaping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the drawer is pulled outward excessively, then the drawer can be accessed more easily, but the drawer will tilt downward and become unstable
Solution Approach 1:
The patent applies preliminary anti-action by providing position-limiting guiding portions that prevent the drawer from tilting downward before the drawer is fully pulled out. The guiding portions engage with the drawer to counteract the tilting force that would otherwise cause instability, allowing the drawer to be accessed easily while maintaining stability throughout the extraction process.
2Reliability
If auxiliary lateral rods are added to provide position-limiting functionality, then the drawer can be prevented from over-sliding, but the device complexity increases
Solution Approach 1:
The patent merges the position-limiting functionality with the existing supporting frames by integrating guiding portions into the supporting frame structure. This combination eliminates the need for separate auxiliary lateral rods while maintaining the position-limiting function, thus preventing over-sliding without significantly increasing device complexity.
3Ease of operation
If the drawer is pulled outward, then the drawer can be removed or accessed, but the front end of the drawer automatically tilts downward
Solution Approach 1:
The patent introduces position-limiting guiding portions as intermediary elements between the drawer and the supporting frame. These guiding portions act as mediators that maintain the drawer's horizontal orientation during extraction, preventing the front end from tilting downward while allowing smooth drawer removal and access.
Data Source
AI summary
A drawer assembly includes a carrier frame and a sliding basket mounted in the carrier frame and movable in forward-backward direction relative to the carrier frame. The carrier frame includes a front open frame, a rear open frame, a first supporting rod and a second supporting rod. The first and second supporting rods are respectively connected between the front open frame and the rear open frame. The sliding basket includes a first limiter member disposed at one lateral side relative to the first supporting rod and defining a first concave portion and a first stop portion connected to the first concave portion. The first stop portion is disposed at the bottom side of the first supporting rod. Thus, the sliding basket is escaping out of the carrier frame in upward direction.