Pet Bag Rack with Nesting Side Bars for Compact Folding
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Solution Overview
Problem
Existing pet bag racks are inconvenient for transport and carrying due to their large volume when folded, despite being detachable and foldable, as they maintain an ∩-shaped integral structure that does not significantly reduce size.
Innovation Solution
A pet bag rack design featuring horizontal and side bars that form a unity through hinged pivot seats, allowing the side bars to revolve and adjust to be parallel or perpendicular to the horizontal bars, with a limiting and fixing device to maintain states, and using telescopic bars and compression springs for easy folding and unfolding without tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If detachable and foldable structures with ∩-shaped integral side frames are used, then the rack can be disassembled and folded for transport, but the volume when folded remains relatively large and transport convenience is insufficient
Solution Approach 1:
The side frames are designed to nest within the horizontal bars when folded, with the ∩-shaped side frames inserting into the horizontal bar structures. This nesting arrangement significantly reduces the overall volume when folded compared to traditional foldable designs where components remain separate.
Solution Approach 2:
The rack is divided into separable components including horizontal bars, side frames, and connecting mechanisms that can be detached without tools. The side frames are segmented into movable portions that can revolve and fold independently, enabling compact configuration while maintaining ease of assembly and disassembly.
2Ease of operation
If tool-free assembly and disassembly is implemented, then usability is enhanced, but the structural complexity increases due to the need for special connecting mechanisms
Solution Approach 1:
The connecting mechanisms are designed to be operated by the user without requiring external tools. The side frames can be attached to and detached from the horizontal bars through manual manipulation of the revolving and folding mechanisms, enabling self-service assembly and disassembly.
Solution Approach 2:
The connecting mechanisms incorporate dynamic elements such as revolving joints and folding sections that allow the structure to transition between assembled and disassembled states. These dynamic components enable tool-free operation while managing structural complexity through controlled movement rather than complex fastening systems.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design significantly reduces the volume when folded, making transport and carrying easier, and allows for tool-free assembly and disassembly, enhancing usability and reducing material usage.
Implementation Method 1
a compression spring is disposed between two adjoining sliding sleeves
Data Source
AI summary
A pet bag rack, comprising horizontal bars and two groups of relatively disposed side bars. One end of each group of the side bars is hinged to one end of the horizontal bars, and the other end of the side bars is pivoted to a pivot seat. The side bars may rotate around the pivot seat; a limiting and fixing device comprising a revolving shaft, a knob and a limiting turntable is mounted on the pivot seat. The revolving shaft runs through the center of the pivot seat. The knob is arranged at the inner end of the revolving shaft. The limiting turntable is slipped over the revolving shaft.