Modular Storage Rack Assembly Using Angled Dowel Holes
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Solution Overview
Problem
Existing storage rack systems for flat panels require additional fasteners for assembly, are single-purpose devices, and lack the ability to be easily combined to form larger structures, making them inefficient and complex to use.
Innovation Solution
A modular storage rack system using spaced end plates with dowel-receiving holes offset at specific angles, eliminating the need for additional fasteners and allowing units to be assembled and connected to form versatile structures like desks or workbenches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional fasteners (nails, screws, pins, glue) are used to assemble storage rack units, then the structural strength and stability are improved, but the assembly complexity and difficulty increase significantly
Solution Approach 1:
The end plates are segmented with multiple pre-drilled holes at specific angles, allowing the dowel to engage multiple surfaces simultaneously. This segmentation distributes the structural load across multiple contact points while maintaining a simple single-piece dowel connector, resolving the contradiction between strength and assembly simplicity
Solution Approach 2:
The holes in the end plates are drilled at specific non-perpendicular angles relative to the plate surface. This parameter change in hole orientation creates a mechanical interlock geometry where the dowel naturally seats itself, generating both structural strength and self-centering action without requiring additional fasteners or complex assembly procedures
2Ease of manufacture
If storage racks are designed as single-purpose devices, then the structural design is simplified, but the adaptability and versatility decrease
Solution Approach 1:
The storage rack units are designed with standardized end plates featuring multiple holes at various angles, creating universal connection points that can accommodate different dowel configurations. This allows the same basic unit to serve multiple functions and be assembled into various arrangements (single racks, paired racks, corner units, etc.), achieving versatility without complicating the fundamental design
Solution Approach 2:
The modular design allows the rack system to dynamically adapt to different storage needs through reconfiguration. Users can add or remove units, change orientations, and create different layouts as requirements evolve, transforming a static single-purpose design into a dynamic multi-functional system
3Reliability
If additional fastening devices are required for assembly, then the connection reliability is improved, but the ease of operation and assembly time increase
Solution Approach 1:
The angled hole geometry and dowel combination create a self-assembling system where the components guide and secure themselves without external fasteners. The dowel inserted through the angled holes automatically creates a mechanical interlock that provides reliable connections while eliminating the need for nails, screws, or other fastening devices, thus improving both reliability and ease of operation
Data Source
AI summary
A storage rack unit includes a pair of spaced planar end plates, an intermediate stabilizer panel and a plurality of dowels which extend between the two end plates. Each of the end plates has spaced dowel end receiving holes, each of whose longitudinal axes are angled with respect to a line perpendicular to the plane of each end plate. The angles of the holes in the first end plate are different from the angles of the holes in the second end plate. The provision of these angled holes in the two end plates allows the construction of each storage rack unit without the use of ancillary fasteners. Several such storage rack units can be joined together to form a composite storage rack system.