Tubular Joining Member With Mechanical Locking for Stronger Frames
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Solution Overview
Problem
Existing joining members for tubular members face challenges in achieving sufficient connection strength and require welding, which is cumbersome and limited by environmental conditions.
Innovation Solution
A joining member configuration comprising a first joining member with insertion segments and a securing slit, a second joining member with insertion segments and a securing member retainer, and a securing member, allowing for mechanical connection without welding by inserting the securing member into the slit and retaining it with the retainer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the first joining member and second joining member are connected by fitting the protrusion into the hole, then the assembly process is simple, but the connection strength is insufficient
Solution Approach 1:
The joining member is divided into multiple functional segments: the base portion for structural support, the protrusion for initial positioning and insertion, and the hole for receiving the protrusion. This segmentation allows each part to perform its specific function while collectively achieving both easy assembly and strong connection.
Solution Approach 2:
The protrusion and hole are merged into an integrated connection system where the protrusion extends from the base and fits into the corresponding hole. This merging creates a unified joining mechanism that combines positioning, connection, and structural integration in a single operation, achieving both simplicity and strength.
2Strength
If welding is used to connect the first joining member and second joining member, then the connection strength is sufficient, but the process becomes troublesome and environmentally limited
Solution Approach 1:
The invention replaces the welding process (thermal/chemical system) with a mechanical insertion system. The protrusion fits into the hole through purely mechanical means, eliminating the need for welding equipment, heat sources, and specialized environmental conditions, while still achieving sufficient connection strength through the mechanical interlock.
Solution Approach 2:
The hole acts as an intermediary element that receives and secures the protrusion. This intermediary structure enables the connection between the first and second joining members without requiring direct welding, providing a mechanical bridge that simplifies the process while maintaining connection integrity.
Data Source
Figure 1A~1D
Figure 2A~2E
Figure 3A~3E
AI summary
In a joining member including a first joining member (10A), a second joining member (20), and a securing member (50), the first joining member (10A) includes an angular tube section (11), a pair of first insertion segments (12) and a pair of first insertion segments (13) respectively extending in an X and a Y direction from the angular tube section (11), and a securing slit (14) passes through a side surface of the angular tube section (11) into which the securing member (50) is inserted, and the second joining member (20) includes a planar portion (21), a pair of second insertion segments (22) extending from the planar portion (21), a pair of linkage insertion segments (23) extending toward the opposite side and inserted in the angular tube section (11), and a securing member retainer (28) provided between the pair of linkage insertion segments (23) for retaining the securing member (50).