Frame Connecting Structure for Tool-Free Reliable Assembly
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Solution Overview
Problem
Conventional rack structures require complex assembly/disassembly processes and cannot be easily adjusted or replaced, as they are typically fixed with screws or welding, failing to meet diverse consumer needs.
Innovation Solution
A frame with a connecting and positioning structure featuring cross bars and vertical bars connected through a unique design with a fixing seat, fitting groove, embedded block, plug-in column, and fixing member, allowing for tool-free assembly and disassembly, ensuring oriented and secure connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If components are fixed by screws, then the connection is secure and reliable, but the assembly/disassembly process becomes complex and time-consuming
Solution Approach 1:
The connecting structure is divided into multiple functional components: fixing seat, embedded block, plug-in column, and fixing member. Each component performs a specific function in the assembly process, enabling secure connection while maintaining simplicity and speed of assembly/disassembly.
Solution Approach 2:
The plug-in column acts as an intermediary element between the embedded block and the fixing seat. It transmits the connection force and enables the fixing member to secure the joint, achieving reliable fixation without requiring complex screw assembly procedures.
2Strength
If components are fixed by welding, then the connection is strong and permanent, but the structure loses adjustability and replaceability
Solution Approach 1:
The connecting structure transitions from a static welded joint to a dynamic, reversible connection system. The fixing member can be removed and reinstalled, allowing the structure to be adjusted, disassembled, or reconfigured while maintaining connection strength during assembly.
Solution Approach 2:
The embedded block with retaining groove and the plug-in column with corresponding features create a self-aligning, self-retaining connection system. The structure maintains its integrity through the interaction of these components, eliminating the need for permanent welding while preserving strength and adaptability.
3Productivity
If a simple connection structure is used, then assembly is quick and easy, but the connection reliability and security are compromised
Solution Approach 1:
The connecting structure employs asymmetric features such as the inner-wide and outer-narrow fitting groove, the specific geometry of the plug-in column, and the positioned fixing member. These asymmetric elements ensure proper alignment and secure connection while maintaining simple, tool-free assembly procedures.
Solution Approach 2:
The embedded block is nested within the fixing seat, and the plug-in column is nested within the embedded block. This nested arrangement creates a compact, secure connection that is both reliable and simple to assemble, with components fitting together in a hierarchical manner.
Data Source
AI summary
Disclosed is a frame with connecting and positioning structure. The frame has a plurality of cross bars and vertical bars which are correspondingly connected through the connecting and positioning structure. The connecting and positioning structure includes: a fixing seat fixed to the end of the cross bar; a fitting groove on the fixing seat; one end of the fitting groove is extended toward the bottom edge of the cross bar to form an opening end; an embedded block is provided for embedding in the retaining groove of the vertical bar; a plug-in column is connected with the embedded block; a fitting convex portion is connected to the other end of the plug-in column, and the fitting convex portion and the plug-in column are correspondingly inserted into the fitting groove; and a fixing member penetrates through the embedded block, the fitting convex portion, and the plug-in column to connect them together.