Playpen Hub Locking Assembly for One-Move Safe Folding
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Solution Overview
Problem
Existing playpen hub assemblies often require complex mechanisms and two-move operations for folding, posing safety concerns and operational complexity.
Innovation Solution
A playpen hub assembly featuring a linking device and a locking mechanism with a strap system that allows for easy one-move operation, utilizing a pivoting locking device with an elastic component and a strap to securely engage and disengage the bottom pipes, enabling efficient folding and unfolding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a locking device directly engages with bottom pipes to prevent pivoting, then the locking function is achieved, but the mechanism becomes complicated
Solution Approach 1:
The patent introduces a linking device as an intermediary component between the locking device and the bottom pipes. The linking device includes a connecting piece that pivots to the bottom pipes and an engaging piece that interfaces with the locking device. This intermediary structure simplifies the overall mechanism by decoupling the direct engagement requirement while maintaining reliable locking functionality through the engaging piece's interaction with the locking device's locking piece.
2Reliability
If a two-move releasing mechanism is used for safety, then safety is improved, but the operation becomes more complex
Solution Approach 1:
The patent combines the safety verification function and the release operation into a single integrated action. The linking device is designed such that when the engaging piece is pulled, it simultaneously verifies the safety condition (by checking if the locking piece is in the locked position) and executes the release operation. This merging of functions allows the two-move safety mechanism to be achieved through one continuous pulling motion rather than two separate operations.
3Ease of operation
If a one-move operative hub assembly is used for easy folding, then ease of operation is improved, but safety issues arise
Solution Approach 1:
The linking device serves as a safety intermediary that mediates between the user's pulling action and the release of the bottom pipes. The engaging piece of the linking device interfaces with the locking device's locking piece, and the connecting piece pivots to the bottom pipes. This intermediary structure ensures that the one-move operation only releases the pipes when the safety condition is met (locking piece is in the correct position), preventing accidental release while maintaining ease of operation.
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
The solution provides a safe and simplified one-move operation for folding and unfolding the playpen, enhancing user safety and reducing operational complexity while maintaining structural stability.
Implementation Method 1
a pivoting locking device with an elastic component
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A linking device (10, 10') is configured at the bottom of a playpen (1). Two of the bottom pipes (11, 11', 12, 12') at opposite side pivot to a base seat (5, 5') and further pivot to the linking device (10, 10'), which is engaged by a locking device (2, 2') so that the bottom pipes (11, 11', 12, 12') and the linking device (10, 10') are secured at an unfolding position. To fold the hub assembly (100, 200), using a strap (6, 6') or by pushing the locking device (2, 2') directly pivots the locking device (2, 2') to disengage from the linking device (10, 10') and the bottom pipes (11, 11', 12, 12') may rotate to a folding position. To restore the hub assembly (100, 200) to the unfolding position, the linking device (10, 10') can be pressed to push an inclined surface (23, 23') of the locking device (2, 2') to impart a force to the locking device (2, 2') to pivot the locking device (2, 2') until the linking device (10, 10') snaps to engage the locking device (2, 2'), so the hub assembly (100, 200) is secured at the unfolding position again.