Umbrella Rod Hook and Pin Assembly for Stable Replacement
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Solution Overview
Problem
Existing umbrellas have complex and inefficient assembly processes, with rods being difficult to replace and connections being unstable, leading to inconvenience and potential disassembly issues.
Innovation Solution
The umbrella design features a column with an upper nest and a movable lower nest, utilizing first and second pins for rotatable connection of long and short rods, along with an elastic buckle for securing the upper nest to the column, and a stop collar for locking the lower nest, enabling quick and stable assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If rods are connected to nests using grooves and iron wires, then the connection structure is fixed, but the assembly operation becomes complicated and efficiency decreases
Solution Approach 1:
The patent extracts the complex iron wire binding and groove fitting process, replacing it with a simplified pin insertion mechanism. The rod connecting pieces are designed with positioning holes that directly receive pins, eliminating the need for complex binding operations while maintaining connection stability.
Solution Approach 2:
The connection structure is segmented into distinct components: nest bodies with positioning holes, rod connecting pieces with corresponding holes, and pins as separate fastening elements. This segmentation allows for easier assembly by enabling step-by-step connection without complex integrated structures.
2Reliability
If traditional binding structures are used for rods, then connection is achieved, but rod replacement becomes inconvenient
Solution Approach 1:
The patent removes the binding elements (iron wires) that make rod replacement difficult, keeping only the essential pin insertion mechanism. This allows rods to be quickly removed and replaced by simply taking out the pins without dealing with complex binding structures.
Solution Approach 2:
The rod connecting pieces are pre-designed with positioning holes and rod-hanging hooks that facilitate easy insertion and removal. The structure is prepared in advance to enable quick rod replacement without requiring complex disassembly procedures.
3Productivity
If rapid assembly of rods and nest is achieved, then assembly efficiency improves, but connection stability decreases and rods become easy to fall off
Solution Approach 1:
The rod-hanging hooks are designed with asymmetric geometry that provides stable engagement in one direction while allowing easy removal in the opposite direction. The hooks have specific shapes that prevent rods from falling off during normal use but enable quick detachment when needed.
Solution Approach 2:
The rod connecting pieces are pre-equipped with rod-hanging hooks positioned and oriented to automatically engage with the pins during assembly. This preliminary configuration ensures both rapid assembly and stable connection without requiring additional stabilization steps.
Data Source
AI summary
An umbrella has a column, an upper nest, a movable lower nest, a plurality of long rods, a plurality of short rods. The upper nest has a plurality of first slots spaced apart on a periphery of the upper nest, a plurality of first pins is disposed on the upper nest respectively; each long rod has a first rod-hanging hook on the top end thereof, each first rod-hanging hook hooks on the corresponding first pin; the lower nest has a plurality of second slots spaced apart on a periphery of the lower nest, a plurality of second pins are disposed on the lower nest respectively; each short rod has a second rod-hanging hook on the bottom end thereof, each second rod-hanging hook hooks on the corresponding second pin. The structure of the present invention is simple and reasonable, the machining is convenient and the cost is low.