Playpen Side Rail Positioning Regions for Multi-Accessory Mounting
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Solution Overview
Problem
Conventional infant playpens face difficulties in securely attaching accessories like bassinets and changing stations due to their fabric-covered frames, which require complex attachment features and often limit accessories to a single orientation, making them inconvenient to use.
Innovation Solution
The infant playpen features multiple positioning regions on its upper side rail assemblies with distinctive geometrical shapes, allowing for the secure attachment of removable accessories in various configurations using a standardized connection mechanism, eliminating the need for partial disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional attachment features are used on fabric-covered playpen frames, then accessories can be attached, but the attachment mechanism becomes complex and requires partial disassembly
Solution Approach 1:
The attachment mechanism is segmented into two parts: permanent rigid support structures (crossbars, side rails) that provide attachment points, and removable fabric enclosures that can be independently attached or removed. This segmentation allows accessories to be securely attached to the rigid frame without requiring disassembly of the entire playpen structure.
Solution Approach 2:
Rigid crossbars and side rails serve as intermediary elements between the fabric-covered frame and the accessories. These intermediaries provide stable attachment points that eliminate the need for complex attachment mechanisms on the fabric itself, while maintaining secure connection for bassinets and changing stations.
2Reliability
If conventional attachment features are used, then accessories can be fastened, but they are limited to one specific orientation
Solution Approach 1:
Multiple attachment locations are provided at different positions and orientations along the rigid crossbars and side rails. Each location has specific geometric features (slots, openings) that accommodate accessories in different orientations, allowing the same playpen structure to support bassinets, changing stations, or other accessories in various configurations based on local needs.
Solution Approach 2:
The rigid crossbars and side rails serve multiple functions: they provide structural support for the fabric enclosures, serve as attachment mechanisms for accessories, and enable accessories to be installed in multiple orientations. This multi-functionality eliminates the need for separate attachment features for each accessory type and orientation.
3Adaptability or versatility
If multiple separate attachment features are provided for different accessories, then various accessories can be attached, but the construction becomes more complex
Solution Approach 1:
The rigid crossbars and side rails serve as universal attachment structures that can accommodate multiple types of accessories (bassinets, changing stations, toy bars) through standardized geometric features. This universal design allows different accessories to be attached using the same structural elements, eliminating the need for separate specialized attachment features for each accessory type.
Solution Approach 2:
The attachment mechanism is merged with the structural frame elements themselves. The rigid crossbars and side rails that provide structural support also serve as the attachment mechanism, combining two functions into one structure. This merging eliminates the need for separate attachment hardware and reduces overall construction complexity.
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
An infant playpen (100) includes a plurality of upright legs (110A, 110B), and a first and a second upper side rail assembly (112A, 112B) supported by the upright legs (110A, 110B). Each of the first and a second upper side rail assembly (112A, 112B) includes at least one elongated segment (126, 128, 136, 138) having an outer surface, and a plurality of positioning regions (154) are defined on the outer surfaces of the elongated segments (126, 128, 136, 138), each of the positioning regions (154) being configured to locate a connection of a removable accessory on the infant playpen. An infant care system is also disclosed, which includes the infant playpen (100) and a removable accessory (150) installed thereon. One selected positioning region of the first upper side rail assembly can be received in a housing (174) of the removable accessory (150), and a locking part (176) of the removable accessory (150) is displaced to a locked position that retains the selected positioning region in the housing (174).