Corner Cupboard Rotary Bearing With Multi-Track Load Distribution
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Solution Overview
Problem
Existing rotary fittings for corner cupboards do not evenly distribute the load when article-carrying members are rotated, leading to uneven stress and potential instability during operation.
Innovation Solution
A rotary fitting design featuring a supporting column with a first rotary bearing component having multiple circular tracks with sloping regions and a second bearing component with complementary tracks, providing three-point support and even load distribution around the column, allowing for smooth rotation and stable positioning of article-carrying members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single circular track with a single projection and recess is used in the rotary bearing, then the device complexity is reduced, but the load distribution becomes uneven during rotation
Solution Approach 1:
The single circular track is segmented into multiple circular tracks (at least three) arranged around the supporting column. Each track has its own projection and recess, distributing the load across multiple contact points instead of a single point, thereby achieving even load distribution while maintaining relatively simple device structure
Solution Approach 2:
Multiple circular tracks are merged into a single rotary bearing assembly, working together to provide combined support. The tracks are positioned at different angular intervals around the column, creating a unified load distribution system that improves reliability without significantly increasing complexity
2Reliability
If multiple circular tracks with sloping regions are added to the rotary bearing, then the load distribution uniformity is improved, but the device complexity increases
Solution Approach 1:
The circular tracks incorporate sloping regions at specific locations to facilitate smooth engagement between projections and recesses. These localized sloping features are strategically positioned to guide the article-carrying member into proper alignment and distribute loads evenly, adding only where needed rather than throughout the entire structure
Solution Approach 2:
The sloping regions in the circular tracks create curved, arc-shaped contact surfaces that guide the projection into the recess during rotation. This curvature enables smooth transitions and even load distribution, transforming the rigid mechanical interaction into a more progressive and uniform force distribution pattern
Data Source
AI summary
A rotary fitting for a corner cupboard comprises a supporting column; fastening members for the supporting column; an article-carrying member rotating about the supporting column; and a rotary bearing between the supporting column and the article-carrying member. The rotary bearing has a first component mounted on the supporting column and having an upper side with at least three circular tracks that extend round the supporting column, and comprise two opposite sloping regions arranged between a lower portion and an upper portion of the track each, the sloping regions which slope in the same direction of all circular tracks being distributed around the supporting column; and a second component mounted on the article-carrying member and having an underside on which one complementary circular track having lower and upper portions and opposite sloping regions is provided per each circular track on the upper side of the first component.