Bakery Dolly Deck With Recessed Peripheral Lip
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Solution Overview
Problem
Existing bakery tray dollies do not efficiently manage the stacking and unstacking of trays with protruding stacking feet, leading to difficulties in multiple stacking orientations and potential damage due to the lack of a secure and durable support system.
Innovation Solution
A dolly design featuring a deck with a peripheral lip having recesses to receive the stacking feet, providing a secure and durable support surface with reinforcement channels and a double-walled peripheral lip for increased strength and stiffness, allowing the stacking feet to slide in and out of recesses during stacking and unstacking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a simple deck structure is used, then manufacturing cost is reduced, but the deck lacks durability and cannot securely support stacked trays
Solution Approach 1:
The deck is segmented into multiple functional components: a base structure, a peripheral lip with recesses, and reinforcement channels. This segmentation allows each component to perform its specific function while maintaining overall structural integrity and durability.
Solution Approach 2:
The deck employs composite construction with the peripheral lip forming a double-walled structure (inner wall and outer wall portions). This composite approach enhances strength and stiffness while managing manufacturing complexity through modular design.
2Ease of manufacture
If a single-walled peripheral lip is used, then manufacturing is simpler, but the deck lacks sufficient strength and stiffness
Solution Approach 1:
The peripheral lip is constructed as a composite double-walled structure with an inner wall portion and an outer wall portion. This composite design provides enhanced strength and stiffness compared to a single-walled structure, while the modular nature of the double-walled design allows for manageable manufacturing processes.
3Ease of operation
If stacking feet slide freely on the deck, then stacking and unstacking is easier, but trays can be damaged and the dolly lacks stability
Solution Approach 1:
The recesses in the peripheral lip are pre-positioned to guide the stacking feet into proper alignment during the stacking process. This preliminary guidance ensures that trays are properly positioned before final contact, preventing damage while maintaining ease of operation.
Solution Approach 2:
The recesses act as an intermediary structure between the stacking feet and the deck surface. They provide a controlled interface that allows sliding motion while preventing direct impact and misalignment that could cause damage to trays or instability.
4Ease of manufacture
If recesses are formed only in the inner portion of the peripheral lip, then manufacturing is simpler, but stacking feet may not be fully secured
Solution Approach 1:
The recesses are strategically located in the inner portion of the peripheral lip where they most effectively interact with the stacking feet. This localized placement provides adequate security for stacking operations while minimizing manufacturing complexity by concentrating the recess formation in a specific region rather than throughout the entire lip structure.
Data Source
AI summary
A dolly includes a deck having a support surface and a plurality of wheels below the deck. The deck includes a peripheral lip around a periphery of the deck, the peripheral lip including an inner wall portion spaced inwardly from an outer wall portion. The inner wall portion and outer wall portion are joined continuously at an upper edge thereof.