Collapsible Input Shelf for Cart-Adaptive Checkout Systems
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Solution Overview
Problem
Conventional self-checkout systems face inefficiencies when handling full-size shopping carts due to input shelves optimized for hand baskets, leading to increased trunk flexion and wasted movement, which prolongs transaction time and reduces lane throughput.
Innovation Solution
A collapsible input shelf that adjusts its position based on the detection of a shopping cart, rotating, sliding, or moving into a cabinet to accommodate both small hand baskets and full-size carts, enhancing transaction efficiency and shopper comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the input shelf is positioned at a hand basket-optimized height, then hand basket accessibility is improved, but full-size shopping cart accessibility deteriorates
Solution Approach 1:
The input shelf is designed to dynamically change its position between a horizontal extended position (for hand baskets) and a collapsed retracted position (for full-size carts). The shelf can rotate about a hinge axis or slide along rails, transitioning between these states based on detected cart presence, thereby adapting to different user needs.
Solution Approach 2:
The input shelf serves multiple functions: it provides a horizontal extended surface for hand basket placement when no cart is present, and it can be collapsed to allow full-size carts to approach the checkout system. This multi-functionality resolves the contradiction between optimizing for hand baskets and accommodating full-size carts.
2Ease of operation
If the input shelf remains in a horizontal position, then hand basket placement is facilitated, but shopping cart approach is obstructed
Solution Approach 1:
The input shelf transitions from a static horizontal position to a dynamic collapsed state when a full-size cart is detected. The shelf rotates upward or slides inward, reducing its protrusion distance and clearing the path for cart approach, thereby resolving the spatial conflict between hand basket support and cart accessibility.
3Adaptability or versatility
If the input shelf is collapsed to accommodate full-size carts, then cart accessibility is improved, but hand basket support is reduced
Solution Approach 1:
The input shelf operates in periodic cycles, alternating between the horizontal extended position (when hand baskets are present) and the collapsed retracted position (when full-size carts are detected). This periodic transition ensures optimal support for whichever item type is currently being used, resolving the contradiction between the two usage scenarios.
4Adaptability or versatility
If a collapsible input shelf is implemented, then adaptability to different cart types is improved, but device complexity increases
Solution Approach 1:
The collapsible input shelf employs mechanical components such as hinges, rails, and actuators to enable dynamic position changes. These components, while adding some complexity, provide the necessary adaptability to switch between horizontal and collapsed states, accommodating different cart types effectively.
Solution Approach 2:
The system incorporates sensors that automatically detect the presence of full-size carts and trigger the input shelf to collapse without manual intervention. This self-service mechanism reduces the operational complexity for users, as the shelf adjusts automatically based on detected conditions.
Data Source
AI summary
A checkout system is disclosed. In one aspect, a checkout system includes a cabinet and an input shelf coupled with the cabinet. The checkout system also includes features for detecting a cart approaching the checkout system. The input shelf is arranged to collapse based at least in part on detection of a cart approaching the checkout system.