Removable Cart Table Extensions for Variable Workspace and Storage
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Solution Overview
Problem
Conventional carts have fixed top surface sizes and shelf heights, limiting their adaptability for variable storage needs, requiring separate purchases or custom solutions for additional space or tall item storage.
Innovation Solution
A cart design featuring pivot arms that allow for adjustable top surface extensions and shelving, with a pivoting lock mechanism to secure the side members, enabling variable workspace and storage configurations without compromising the cart's functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the cart has a fixed top surface size, then the structure is simple and stable, but the adaptability for variable storage needs is poor
Solution Approach 1:
The cart structure is divided into a fixed base cart and removable side members that can be independently added or removed. The side members include table extensions and shelving units that segment the overall storage space into modular sections, allowing users to configure the cart according to specific storage needs without redesigning the entire structure.
Solution Approach 2:
The side members are designed with dynamic characteristics, being removable and reconfigurable rather than permanently fixed. The pivot arms with locking mechanisms enable the side members to be dynamically attached and detached, transforming the cart from a static fixed-configuration structure to a dynamic reconfigurable system that adapts to varying storage requirements.
2Adaptability or versatility
If additional space is needed, the user must purchase another cart or arrive at a custom designed solution, but this increases cost and complexity
Solution Approach 1:
The side members are designed as universal components that can serve multiple functions - table extensions for workspace, shelving units for storage, or combinations thereof. These multi-functional components can be attached to the base cart to create different configurations, eliminating the need for multiple specialized carts or custom-designed solutions for various storage scenarios.
Solution Approach 2:
The side members are designed to nest alongside the base cart structure, with table extensions and shelving units that fit into the overall cart framework. This nesting arrangement allows additional space to be added without requiring a completely separate cart or complex custom design, as the components integrate seamlessly into the existing structure.
3Adaptability or versatility
If the cart has fixed shelf heights, then the structure is simple, but it cannot accommodate tall items
Solution Approach 1:
The shelving structure is segmented into multiple adjustable shelves within the side members, allowing independent positioning of each shelf at different heights. This segmentation enables the cart to accommodate items of varying heights, including tall items, while maintaining a relatively simple overall structure through modular shelf components that can be independently adjusted.
4Adaptability or versatility
If removable side members are added to provide variable top surface, then adaptability improves, but the device complexity increases
Solution Approach 1:
The pivot arm mechanism incorporates a self-locking feature where the arm automatically locks into position when extended to support the side member, and can be easily released by applying upward pressure. This self-service locking mechanism reduces the need for complex manual locking systems while maintaining stability during use and simplicity during configuration changes.
Data Source
AI summary
A cart, such as a kitchen cart, has a bottom shelf supported by leg members. The leg members further support a central shelf or basket at a user-desired position along the legs, and a top support. The top support can retain a top work surface thereto. On at least one side of the cart, arms can pivot outward, adjacent the top work surface, to support one or more work surface extension members. Typically, there may be one work surface extension member on each side of the cart, providing the user with additional workspace and providing the option of removal without interfering with the functionality of the cart.