Stepped Joint Table Tennis Table Assembly for Compact Shipping
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Solution Overview
Problem
Table tennis tables are impractical for shipping due to their size when fully assembled, require extensive assembly with many parts and tools, and often result in missing components, making assembly frustrating for consumers.
Innovation Solution
A multi-section table tennis table design with two table halves formed from quarter sections, featuring a stabilized joint with a step or rabbet profile and offset from the center, allowing for easy assembly without tools and minimizing parts, with fasteners to secure the connection between sections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the table is shipped fully assembled, then the playing surface is stable and ready for use, but the shipping size is large and difficult to transport
Solution Approach 1:
The table is divided into four quarter sections that can be separated for compact shipping and reassembled at the destination. Each quarter section includes integrated leg assemblies and connection mechanisms, allowing the table to be broken down into manageable pieces that fit in smaller vehicles while maintaining structural integrity during transport.
2Volume of moving object
If the table is divided into two table halves, then the shipping size is reduced, but a seam is formed at the joint that affects the playing surface
Solution Approach 1:
The table is divided into four quarter sections instead of two halves, creating joints at the corners rather than across the playing surface. This segmentation allows the table to be compacted for shipping while keeping seams away from the playing area, as the joints are formed by connecting quarters at the perimeter.
Solution Approach 2:
The joint stabilization mechanism extends vertically with stepped profiles and overlapping sections that connect in the third dimension. This vertical engagement ensures the playing surfaces align perfectly horizontally, eliminating gaps or misalignment at the joints while allowing compact assembly.
3Volume of moving object
If many parts are used for assembly, then the table can be compacted for shipping, but the assembly process becomes complex and parts may be lost
Solution Approach 1:
Leg assemblies are integrated with the quarter sections, and connection mechanisms are built into the joint structures. This merging of components reduces the total number of separate parts needed for assembly while maintaining the ability to compact the table for shipping. The integrated design ensures all necessary components are included with each section.
Solution Approach 2:
The joint connection system is designed to be self-aligning and self-stabilizing through complementary stepped profiles and overlapping geometries. This self-service mechanism eliminates the need for complex alignment procedures or specialized tools, allowing consumers to assemble the table easily without risking loss of small fastening components.
4Ease of operation
If a simple joint is used to connect sections, then assembly is easy, but the joint stability is insufficient
Solution Approach 1:
The joint connection utilizes vertical stacking and overlapping in the third dimension, with stepped profiles that engage at multiple levels. This multi-level vertical engagement provides inherent stability and mechanical interlocking while maintaining simple horizontal alignment, achieving both ease of assembly and joint stability simultaneously.
Solution Approach 2:
The joint structure combines multiple geometric features (stepped profiles, overlapping sections, complementary shapes) into a composite connection system. This composite approach integrates multiple stabilization mechanisms into a single joint design, providing robust stability while maintaining simple assembly through the unified structure.
Data Source
AI summary
A multi-section table tennis table half comprises first and second table sections which abut to form a first table half. Each of the sections includes an upper surface for playing table tennis, an opposite lower surface an inner edge. The inner edges of the first and second sections abut to form a first table half joint. The vertical cross-section of the joint may be stepped, with each of the inner edges being stepped and thereby including a horizontal section positioned between two vertical sections. The table half may further include a fastener spanning the abutment between the sections to secure the connection of the sections.