Modular Greeting Card Rack With Slot-Tab Shelf Assembly
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Solution Overview
Problem
Conventional corrugated card rack displays require significant labor and material for assembly due to the need for multiple shelves made from a single sheet of corrugated material, which 'accordions' to form multiple levels, increasing manufacturing and labor costs.
Innovation Solution
A modular rack display design featuring a base with horizontal and vertical slots and shelf members with corresponding tabs, allowing for easy assembly by inserting tabs into slots, reducing the complexity and time required to transform the display from a knockdown to an erected configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If conventional accordion-style shelves are used to create multiple levels from a single sheet of corrugated material, then the display can be manufactured with fewer components, but the assembly labor and time increase considerably
Solution Approach 1:
The shelf is divided into multiple independent horizontal slats that can be separately manufactured and then quickly assembled together. Each slat is a discrete component that can be independently produced, stored, and assembled, transforming a complex folding operation into simple insertion tasks.
Solution Approach 2:
The shelf structure transitions from a two-dimensional folded accordion pattern to a three-dimensional assembly of stacked horizontal slats supported by vertical posts. This dimensional change allows the shelf to achieve multiple levels without requiring complex folding sequences, enabling simpler assembly operations.
2Quantity of substance
If conventional accordion-style shelves are used, then material usage is optimized with a single sheet, but manufacturing and labor costs increase
Solution Approach 1:
The shelf is segmented into multiple independent horizontal slats that can be manufactured using standard cutting processes on corrugated material. This segmentation allows for optimized material nesting and cutting patterns, reducing waste while enabling simpler, faster assembly operations that lower labor costs.
Solution Approach 2:
The manufacturing approach changes from creating complex folded structures to producing standardized linear slats with uniform dimensions. This parameter standardization enables more efficient manufacturing processes, better material utilization through optimized cutting layouts, and reduced assembly complexity.
3Volume of moving object
If knockdown configuration is used for shipping and storage, then space efficiency is improved, but setup time and effort increase
Solution Approach 1:
The display structure is segmented into modular components (base, vertical posts, horizontal slats, shelves) that can be collapsed into a compact flat-pack configuration for shipping. Each component remains distinct but can be quickly reassembled by simple insertion operations, minimizing both shipping volume and setup time.
Solution Approach 2:
Components are pre-cut, pre-formed, and pre-configured during manufacturing with precise dimensions and features (such as slots and tabs) that enable rapid assembly. The horizontal slats are pre-cut to specific lengths and the base is pre-formed with integrated slots, eliminating the need for on-site cutting or complex alignment operations.
4Ease of operation
If modular design with multiple components is used, then assembly complexity is reduced, but the number of parts increases
Solution Approach 1:
The vertical posts serve multiple functions: they provide structural support, act as guides for inserting horizontal slats, and integrate the base with the shelving structure. The horizontal slats simultaneously form shelf surfaces and can be configured in different patterns (solid, open, alternating). This multi-functionality reduces the need for separate specialized components.
Solution Approach 2:
The base is designed as an integrated component that combines the floor support structure with the vertical post mounting features. The vertical posts are designed to work with both the base and the horizontal slats, serving as universal connectors. This merging of functions into fewer component types offsets the increase in part count from the modular design.
Data Source
AI summary
A rack display comprising a base having a front panel with a plurality of horizontal and vertical slots included thereon; left and right side panels extending from sides of the front panel; a back panel extending between the left and right side panels; and one or more shelf members including horizontal and vertical tabs. The shelf members are secured to the base by inserting the vertical and horizontal tabs within the vertical and horizontal slots respectively. The rack display is erected from a knockdown configuration by securing the shelf members to the front panel of the base via insertion of the horizontal and vertical tabs within the horizontal and vertical slots respectively.