Automatic Telescopic Tube Extension via Spring-Loaded Gear
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Solution Overview
Problem
Conventional telescopic apparatuses require manual operation for extension, which is slow and cumbersome.
Innovation Solution
An automatically extensible telescopic apparatus is designed with a positioning unit featuring a ferrule, fins, an axle, a toothed wheel, and detents, along with a handle and extending unit that allows for automatic extension of the internal tube from the external tube through a mechanism involving a coil spring and toothed wheel engagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual operation is used for extension, then the structure remains simple, but the extension speed and convenience deteriorate
Solution Approach 1:
The spring is pre-loaded in a compressed state within the extending unit, storing elastic energy that is automatically released to extend the internal tube when the positioning unit is actuated, eliminating the need for manual pulling during extension
Solution Approach 2:
The toothed wheel acts as an intermediary between the positioning unit and the internal tube, converting rotational motion into linear extension through gear engagement with the tube's recesses, while the detent mechanism mediates the engagement/disengagement cycle
2Ease of operation
If manual pulling is used to extend tubes, then the mechanism is simple, but the operation becomes cumbersome and time-consuming
Solution Approach 1:
The spring-loaded extending unit automatically performs the extension action without requiring continuous manual pulling, where the spring's elastic recovery force autonomously pushes the internal tube outward when the positioning unit is actuated
Solution Approach 2:
The detent mechanism creates periodic engagement and disengagement cycles, where the toothed wheel engages with recesses in the internal tube at discrete intervals, allowing controlled stepwise extension rather than continuous manual manipulation
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 apparatus achieves convenient and faster automatic extension of the telescopic tubes, improving upon the manual extension method by utilizing a toothed wheel and detent mechanism to rotate the internal tube relative to the external tube with reduced manual effort.
Implementation Method 1
an extending unit connected to the axle so that the extending unit rotates the toothed wheel via the axle
Data Source
AI summary
An automatic extensible telescopic apparatus includes an internal tube inserted in an external tube. A positioning unit includes a ferrule, two fins, an axle, a toothed wheel and a first detent. The ferrule is provided on the external tube. The fins extend from the ferrule. The axle is supported on the fins. The toothed wheel is supported on the axle and includes teeth for insertion in recesses defined in the internal tube. The first detent is supported on the fins for engagement with the toothed wheel. A handle includes two leaves and a second detent. The leaves are placed between the fins and supported on the axle. The second detent is supported on the leaves for engagement with the toothed wheel. An extending unit is connected to the axle so that the extending unit rotates the toothed wheel via the axle, thus extending the internal tube from the external tube.