Collapsible Shopping Cart With Telescoping Legs for Vehicle Loading
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Solution Overview
Problem
Existing personal shopping carts lack height-adjustable legs and additional wheels, making it difficult to transfer them into vehicles of varying heights, potentially causing damage or injury, especially for individuals with health conditions, and there is a need for a collapsible design that can be easily loaded into vehicles.
Innovation Solution
A collapsible shopping cart system with telescoping legs and adjustable height, equipped with actuators to convert between extended and collapsed conditions, and multiple sets of wheels for stable transfer, featuring a removable cover and compartments for versatility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the shopping cart uses a fixed height basket, then the structure is simple and stable, but it cannot be adapted to vehicles of varying heights, causing difficulty in loading and potential damage or injury
Solution Approach 1:
The shopping cart employs telescoping legs that can dynamically adjust their length to match different vehicle heights. The legs transition between extended and collapsed states through actuator mechanisms, allowing the cart to adapt to various cargo area heights while maintaining structural stability during use.
Solution Approach 2:
The cart's support structure is divided into multiple telescoping leg segments that can independently extend and collapse. This segmentation allows the legs to adjust their effective length while maintaining structural integrity, enabling adaptation to different vehicle heights without compromising the overall structure.
2Ease of operation
If the shopping cart uses a collapsible design with telescoping legs, then it can be easily loaded into vehicles and stored compactly, but the mechanism becomes more complex
Solution Approach 1:
The telescoping legs incorporate self-latching mechanisms that automatically lock at predetermined positions during extension and retraction. The actuators are designed to engage and disengage smoothly, allowing the legs to self-stabilize at various lengths without requiring manual intervention or complex control systems.
Solution Approach 2:
The telescoping legs are pre-configured with internal locking mechanisms and guide structures that automatically engage at specific extension positions. This preliminary preparation allows the legs to stabilize quickly and reliably when extended or collapsed, reducing the operational steps required and simplifying the control mechanism.
3Stability of the object's composition
If additional wheels are added to the shopping cart for stable transfer, then the cart becomes more stable and easier to maneuver, but the device complexity and weight increase
Solution Approach 1:
The shopping cart integrates multiple wheel assemblies that serve dual purposes: providing stable support during normal use and enabling easy maneuverability during transfer. The same wheels that support the cart's weight also facilitate smooth rolling into vehicles, eliminating the need for separate stabilization mechanisms.
Solution Approach 2:
The cart combines multiple wheel functions into integrated assemblies that simultaneously provide support, maneuverability, and stability. The wheel structures are merged with the chassis and leg mechanisms, allowing them to perform multiple functions without adding separate components or increasing overall complexity.
4Volume of moving object
If the shopping cart is designed for complete collapse, then it can be loaded into vehicles and stored compactly, but the structural integrity during use may be compromised
Solution Approach 1:
The cart's frame is segmented into modular sections connected by telescoping joints and reinforcement struts. This segmentation allows the structure to collapse into a compact configuration while maintaining structural integrity through strategically placed reinforcement elements that preserve strength even when collapsed.
Solution Approach 2:
The telescoping legs and frame joints incorporate cushioning elements and reinforcement structures that are pre-installed to protect against stress concentrations during collapse and extension. These beforehand cushioning features prevent structural failure while maintaining the ability to collapse completely for compact storage and vehicle loading.
Data Source
AI summary
A collapsible cart system, comprising: a container having a front end and a back end, a chassis coupled with a bottom of the container, at least one first leg having a first end movable relative to the chassis and a second end, at least one first wheel coupled with the second end of the first leg, and a first actuator connected to the chassis and the first leg. The first actuator is configured to move the first leg relative to the chassis to alternat between a first position where the second end the first leg is fully extended away from the chassis and a second position where the first leg is substantially parallel with a bottom of the chassis.