Portable Bassinet Folding Frame With Stable Pivot Locking
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Solution Overview
Problem
Bassinets are less stable due to their smaller size and elevated legs, and existing folding mechanisms can be cumbersome and prone to accidental folding, making them difficult to open, lock, and transport in a compact configuration.
Innovation Solution
A portable bassinet design featuring first and second mattress support halves with a lower pivoting arrangement and an upper support frame, connected by elongated members to maintain a fixed distance during folding, allowing easy transition between open and closed positions, with a leg pivoting arrangement and joint lock mechanism for secure operation and storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the bassinet uses four tension bars at opposite ends of each side to prevent accidental folding, then the bassinet's stability is improved, but the device complexity increases and ease of operation deteriorates
Solution Approach 1:
The bassinet frame is divided into two separate support halves (first and second support halves) that can pivot independently. Each support half has its own pivoting arrangement with connection members, allowing the structure to be segmented into manageable units that are easier to operate while maintaining overall stability through the coordinated action of both halves.
Solution Approach 2:
The bassinet employs dynamic pivoting arrangements that allow the support halves to move between open and closed positions. The connection members enable controlled pivoting motion, transforming the static structure into a dynamic system that can easily transition between states while maintaining stability in the operational position.
2Ease of operation
If the bassinet is designed to fold completely flat for compact storage, then the ease of transportation is improved, but the manufacturing precision requirements increase
Solution Approach 1:
When folded, the first and second support halves nest together in a compact configuration. The pivoting arrangements allow one support half to nest within or alongside the other, creating a space-efficient stored position. This nesting capability enables completely flat folding while the connection members guide the precise alignment needed during manufacturing.
Solution Approach 2:
The bassinet transitions from a two-dimensional flat configuration when stored to a three-dimensional operational structure when opened. The pivoting arrangements enable this dimensional transformation, allowing the support halves to rotate from a coplanar folded state to an elevated operational state, achieving compact storage without excessive manufacturing precision demands.
3Reliability
If the connection members maintain a fixed distance between lower and upper pivoting arrangements during movement, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The connection members are pre-configured with fixed lengths that establish the correct distance between lower and upper pivoting arrangements before the bassinet is assembled or used. This preliminary design ensures that when the support halves pivot during operation, the geometric relationship between connection points is automatically maintained, providing stability without requiring complex active control mechanisms.
Solution Approach 2:
The connection members act as intermediary elements that mediate between the lower pivoting arrangement (attached to support halves) and the upper pivoting arrangement (attached to upper support members). By maintaining a fixed distance, these intermediaries ensure coordinated movement and stable geometry during the folding and unfolding operations, simplifying the overall system while improving reliability.
Data Source
AI summary
A portable bassinet includes two mattress support halves, a lower pivoting arrangement for providing pivoting movement of the two mattress support halves between open and closed positions, legs connected with the mattress support halves, an upper support frame having two upper support members, an upper pivoting arrangement for providing pivoting movement of the two upper support members between the open and closed positions, connection members which connect the lower pivoting arrangement to the upper pivoting arrangement such that the lower pivoting arrangement and the upper pivoting arrangement are always a fixed distance from each other during movement of the bassinet between the open operative position and the closed storage position.