Nested Child Lap Tray With Drawing Surface and Food Compartments
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Solution Overview
Problem
Conventional highchair trays fail to meet the needs of children by lacking a suitable ergonomic design for lap use and combining functional surfaces for eating and engaging in activities like drawing or playing, as they often have limited flat areas for writing or playing with toys and are not designed to fit comfortably on a child's lap.
Innovation Solution
A multi-purpose tray apparatus featuring a base tray with a desk surface and a food tray that nests into the base tray, providing a comfortable, ergonomic fit with compressible material on the bottom and a non-compressible molded plastic top, along with a food tray that locks vertically to prevent sliding and includes compartments for food and writing utensils, and a strap system for portability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a highchair tray is designed with food compartments only, then the eating function is improved, but the area for drawing or playing activities is reduced
Solution Approach 1:
The tray is divided into two separate but compatible components: a base tray with a large flat desk surface for drawing and playing, and a removable food tray with compartments for eating. This segmentation allows each component to optimize its specific function while the combination provides multi-functionality.
Solution Approach 2:
The base tray serves multiple purposes: it provides a large flat surface for drawing and playing activities, and also serves as a structural base that can support the food tray when needed. The inwardly extending sections at the proximal side enhance ergonomic fit for lap use, making the single base tray structure universally applicable for both activity and dining functions.
2Ease of operation
If the bottom structure is designed to engage a high chair, then the stability is improved, but the ergonomic fit for lap use is lost
Solution Approach 1:
The tray design accommodates different usage scenarios through dynamic adaptability. The base tray can be used independently on a lap with its ergonomic inwardly extending sections, or it can support the food tray for a more stable high chair or table setting. This dynamic configuration allows the structure to adapt to different stability requirements based on the usage context.
3Quantity of substance
If the food tray is made with deep compartments, then the food storage capacity is improved, but the ease of access for children is reduced
Solution Approach 1:
The food tray features localized design variations: shallower compartments near the proximal edge for easy child access, and deeper compartments toward the distal end for increased storage capacity. This local quality differentiation allows the same structure to simultaneously provide both accessibility and storage capacity in different zones.
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 tray apparatus allows for comfortable and stable use during extended periods, providing a dedicated space for eating and engaging in activities without sacrificing comfort or stability, with the food tray being dishwasher safe and the strap system ensuring easy transport.
Implementation Method 1
the bottom side having a resilient material that fits comfortably on a lap of a child where the resilient material is compressible by a human hand
Implementation Method 2
a food tray covering at least a portion of the top side of the base tray and being engagable to and disengagable from the base tray
Data Source
AI summary
A two-part tray apparatus that includes a base tray having a desk surface for drawing and writing and a food tray having four food compartments. A resilient bottom of the base tray may rest on a lap. The food tray is nestable into the base tray and is nonslideable relative to the base tray. The base tray includes a proximal side with no upwardly extending walls to make it easy for a child to write or draw on the desk surface. Strap units are included to anchor opposite ends of the tray apparatus or may be connected to each other to form a full length shoulder strap.