Interlocking Fin Clock Case Design for Flat-Pack Assembly
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Solution Overview
Problem
Conventional wooden clock cases face challenges in packaging and shipping due to size and weight, and the environmental impact of using scarce hardwoods like mahogany, necessitating a design that is easy to assemble, ship, and sustainable.
Innovation Solution
A clock case design featuring interlocking upstanding fins with slots, made from plywood, allowing for flat packaging and easy assembly, reducing weight and environmental impact while maintaining a contemporary antique aesthetic.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional wooden clock cases are made from solid hardwoods, then the aesthetic quality and durability are improved, but the weight and packaging volume increase, leading to higher shipping costs
Solution Approach 1:
The clock case is divided into multiple flat components (front panel, back panel, side panels, shelves) that can be separately manufactured and assembled. This segmentation allows each component to be optimized for weight while maintaining overall structural integrity through the assembly configuration and interlocking joints.
Solution Approach 2:
The patent uses plywood instead of solid hardwood, creating a composite material structure that provides comparable strength and durability to solid wood while significantly reducing weight. The layered construction of plywood maintains structural integrity without the excessive weight of solid hardwood blocks.
2Shape
If traditional solid wood clock cases are used, then the visual appeal and quality are improved, but the environmental impact increases due to depletion of hardwood sources
Solution Approach 1:
Plywood is used as a sustainable alternative to scarce hardwoods. This composite material can be produced from smaller, faster-growing trees and wood byproducts, reducing the environmental impact of deforestation while maintaining the aesthetic quality needed for decorative clock cases.
Solution Approach 2:
The invention changes the material parameter from solid hardwood to plywood, which has different environmental sustainability characteristics. This parameter change allows the same aesthetic function to be achieved with more environmentally friendly materials.
3Volume of moving object
If clock cases are designed for easy shipping and storage, then packaging volume is reduced, but assembly complexity increases for the end user
Solution Approach 1:
The clock case is segmented into flat panels that can be packaged efficiently in compact volumes. The segmentation is designed so that each piece has simple, standardized connection points that guide the assembly process, making it user-friendly despite the multiple components.
Solution Approach 2:
The interlocking joint design allows the customer to assemble the clock case themselves without requiring specialized tools or expertise. The slots and protrusions are designed to fit together intuitively, enabling self-service assembly while achieving compact packaging.
4Loss of energy
If flat-pack design is implemented, then shipping cost is reduced, but manufacturing precision requirements increase to ensure proper fit of interlocking joints
Solution Approach 1:
The case is segmented into components with standardized slot dimensions and interlocking features. This standardization allows for tolerance stacking that accommodates normal manufacturing variations while ensuring proper fit, reducing the extreme precision requirements that would otherwise be needed.
Solution Approach 2:
The slot dimensions and joint geometry are optimized to provide a tolerance buffer that accommodates manufacturing variations. By carefully selecting slot widths, protrusion sizes, and engagement depths, the design achieves reliable assembly with conventional manufacturing tolerances.
Data Source
AI summary
A clock case comprising a first plurality of upstanding, spaced-apart fins formed from flat sheets of material, each of the first plurality of fins having a plurality of slots extending vertically upward from a bottom edge; and, a second plurality of upstanding, spaced-apart fins formed from flat sheets of material, each of the second plurality of fins having a plurality of slots extending vertically downwards from a top edge. Each upwardly extending slot is configured to mate with a respective downwardly extending slot, whereby each of the first plurality of fins is interlocked with each of the second plurality of fins to form an orthogonal array of laterally extending fins and longitudinally extending fins.