Modular Greeting Card Rack with Tab-and-Slot Assembly to Reduce Labor

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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 assembly time and costs.

Innovation Solution

A modular rack display design featuring a base with horizontal and vertical slots and shelf members with tabs that can be easily secured to the base, allowing for quick assembly from a knockdown configuration by folding and inserting tabs into slots, reducing the complexity and time required for setup.

Engineering Contradictions & Design Principles

VSEngineering 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 made from fewer pieces, but the assembly labor and time increase considerably

Engineering Contradiction:

Improvenumber of piecesVSAvoidassembly labor and time

Core Design Contradiction:

Device complexityVSEase of operation

Solution Approach 1:

The shelf is divided into multiple independent panels (first panel, second panel, third panel, etc.) that can be assembled separately and then connected. Each panel is a simple rectangular structure rather than a complex accordion-folded single sheet, reducing the complexity of individual components while enabling easier assembly through standardized connections.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Multiple shelf panels are nested within the rack structure, with each panel fitting into designated spaces between vertical supports. The panels are inserted into horizontal slots and secured with tabs, creating a nested arrangement that simplifies assembly compared to folding a single complex structure.

Inventive Principle:

Principle #7Nested doll (Nesting)

2Quantity of substance

If conventional accordion-style shelves are used to create multiple levels, then material usage is reduced, but manufacturing and assembly costs increase

Engineering Contradiction:

Improvematerial usageVSAvoidmanufacturing and assembly costs

Core Design Contradiction:

Quantity of substanceVSEase of manufacture

Solution Approach 1:

The shelf system is segmented into multiple simple rectangular panels rather than one complex accordion-folded piece. This segmentation allows for simpler manufacturing processes for each panel while reducing overall assembly complexity, thereby lowering both manufacturing and assembly costs despite using multiple separate pieces.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The standardized panel design with universal connection mechanisms (tabs fitting into slots) allows the same manufacturing process to be used for multiple panels, increasing manufacturing efficiency. The modular design enables easy assembly and disassembly, reducing labor costs for both setup and storage.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Volume of stationary object

If the display is provided in knockdown configuration for storage and shipping, then storage and handling efficiency improve, but setup time and effort increase

Engineering Contradiction:

Improvestorage efficiencyVSAvoidsetup time

Core Design Contradiction:

Volume of stationary objectVSLoss of time

Solution Approach 1:

The shelf panels and rack components are pre-cut and pre-formed during manufacturing with all necessary slots, tabs, and fold lines already in place. This preliminary preparation allows for rapid assembly during setup by simply folding along predefined lines and inserting panels into designated positions, significantly reducing setup time despite the knockdown configuration.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The display is segmented into separate panels and components that can be independently folded and assembled. This segmentation allows each component to be quickly prepared in advance and then rapidly assembled during setup by simple insertion and connection actions, reducing overall setup time compared to assembling a single complex structure.

Inventive Principle:

Principle #1Segmentation

4Device complexity

If multiple separate shelf members with tabs are used instead of a single accordion shelf, then assembly complexity increases, but assembly time and labor costs decrease

Engineering Contradiction:

Improvenumber of componentsVSAvoidassembly speed

Core Design Contradiction:

Device complexityVSProductivity

Solution Approach 1:

The shelf system is segmented into multiple independent panels (first panel, second panel, third panel, etc.) that can be assembled separately and then connected. Each panel is a simple rectangular structure rather than a complex accordion-folded single sheet, reducing the complexity of individual components while enabling easier assembly through standardized connections.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS10390634B2Modular greeting card rack

Publication Date: 2019.08.27 VANGUARD PACKAGING LLC

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.