Foldable Playard Enclosure Attachment Without Screw Cracking
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Solution Overview
Problem
Existing foldable playards face difficulties in assembling and detaching enclosures from the frame body due to direct screw fixation, which can lead to cracking when the playard is used or moved, compromising safety and convenience.
Innovation Solution
The playard design features standing posts with T-shaped protrusions and enclosures with matching grooves for detachable engagement, allowing easy assembly and disassembly, and enhanced stability through arc-shaped structures and pivoting components for folding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If enclosures are fixed directly to the frame body via screws, then the enclosures are securely attached, but users have difficulties assembling and detaching the enclosures
Solution Approach 1:
The enclosure attachment system is segmented into separate components: a connector piece with a groove attached to the enclosure, and corresponding protrusions on the standing post. This segmentation allows for easy engagement and disengagement while maintaining secure attachment during use.
Solution Approach 2:
A connector piece serves as an intermediary component between the enclosure and the standing post. This mediator includes a groove that receives the protrusion, facilitating easy assembly and disassembly while distributing forces to prevent cracking.
2Reliability
If enclosures are fixed directly to the frame body via screws, then the enclosures remain stable during use, but the fixed points are easy to crack when the playard is moved or folded
Solution Approach 1:
The attachment system divides the connection into separate elements (protrusion and groove) that can engage smoothly, distributing mechanical stresses away from single crack-prone screw points. The groove geometry allows for stress distribution across multiple contact points.
Solution Approach 2:
The groove design in the connector piece provides built-in stress distribution and cushioning against cracking before it occurs. The geometry of the groove and protrusion creates multiple contact points that prevent stress concentration at any single point, thereby preventing cracking during movement or folding.
3Volume of moving object
If the playard is designed to be foldable for transport and storage, then the playard can be compacted to a smaller size, but the enclosures become difficult to attach and detach
Solution Approach 1:
The enclosure and frame are separated into detachable segments connected by the protrusion-groove mechanism. This allows the enclosures to be easily attached or detached independent of the folding operation, maintaining ease of operation while enabling compact storage when enclosures are removed.
Solution Approach 2:
The attachment system is designed to be dynamically adaptable - the protrusion-groove connection allows for quick engagement and disengagement, enabling users to attach enclosures when needed and remove them for compact storage, thus adapting to different operational states.
Data Source
AI summary
Playard has a frame body that includes a top frame, a plurality of standing posts, and a bottom frame pivoting to one another so that the playard is foldable. A top corner of the standing post, top rails adjacent to the top corner, and the corresponding post body of the standing post form an arc-shaped surface structure. The top corner is mounted above the post body of the standing post by coupling a plug of the top corner to a socket of the post body. The standing post has two first engagements at two sides of its arc shape post body or on the wall of the socket. The enclosure has a second engagement at one end that can engage with the first engagement by sliding up and down relative to the standing post so that the enclosure is easily attached to or detached from the standing post.