Stackable Trolley Wire Shelves Segmentation
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Solution Overview
Problem
Conventional stackable trolleys with child seats have limited storage space due to the seating arrangement, which restricts their utility for carrying larger items.
Innovation Solution
A stackable trolley design featuring multiple parallel horizontal shelves with a sliding device and a frame, where each shelf is formed from bent horizontal wires connected by vertical prongs for secure storage, and equipped with holding means and stabilization aids to prevent items from slipping or falling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a child seat is added to the trolley, then the trolley can accommodate children, but the storage space is limited
Solution Approach 1:
The trolley is divided into multiple separate shelves (first shelf, second shelf, third shelf) that can independently store different items. This segmentation allows the storage space to be distributed across multiple levels, providing adequate storage capacity even when a child seat is attached to the frame
Solution Approach 2:
The invention utilizes vertical dimension by arranging shelves at different heights (upper, middle, lower positions) on the frame. This three-dimensional arrangement maximizes storage capacity within the available vertical space, accommodating both child seat requirements and storage needs
2Volume of moving object
If multiple horizontal shelves are added to increase storage area, then storage capacity increases, but structural complexity increases
Solution Approach 1:
Each shelf is constructed from multiple parallel wires that are segmented and connected to the frame. This wire-based segmentation creates multiple shelves without requiring complex support structures, as each wire acts as an independent structural element
Solution Approach 2:
The wires forming each shelf are bent at specific locations to create localized support points and tray-forming sections. This local bending provides structural reinforcement exactly where needed (at the bends and connection points) while keeping the overall shelf structure simple and lightweight
3Stability of the object's composition
If wires are bent to form secure storage areas for trays, then tray stability improves, but manufacturing complexity increases
Solution Approach 1:
The wires are bent only at specific locations to form tray-shaped storage areas, rather than forming complete enclosed trays. This localized bending provides adequate tray stability while significantly reducing manufacturing complexity compared to forming complete tray structures
Solution Approach 2:
The wire structure acts as a flexible framework that can be bent into tray-form configurations. The wires provide structural support through their flexibility and ability to maintain bent shapes, creating stable tray areas without requiring rigid, complex manufacturing processes
Data Source
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AI summary
On a frame (4) there are several places of deposit (6), which make it possible to deposit a tray. On the frame there are three places of deposit, i.e. top (6.1), center (6.2) and bottom (6.3) places of deposit. The distance between the center and bottom places of deposit corresponds to the distance between the center and top places of deposit. Each place of deposit is made from one or more horizontal wires (6.4).