Telescopic Support Bar With Damped Toothed-Wheel Retraction
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Solution Overview
Problem
Existing telescopic supportive apparatuses for cargo in trucks often result in items rattling and falling during transport, leading to damage, and can be hazardous when used as a post due to rapid tube extension.
Innovation Solution
A telescopic supportive apparatus with an external tube, internal tube, mount, toothed wheel, handle, first and second detents, and a damping unit, where the internal tube is formed with recesses and the toothed wheel is supported on the mount, allowing controlled extension and damping of the internal tube's insertion, preventing rapid drops.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the internal tube is allowed to drop rapidly into the external tube due to gravity, then the extension speed is increased, but user safety is compromised due to potential injury
Solution Approach 1:
The damping unit applies a counteracting force before the internal tube can drop rapidly, preventing the harmful effect from occurring. The damping mechanism creates resistance against gravitational acceleration, controlling the descent speed of the internal tube into the external tube, thereby eliminating the safety hazard while still allowing extension functionality.
Solution Approach 2:
The invention converts the harmful gravitational force that causes rapid dropping into a beneficial controlled extension mechanism. By incorporating the damping unit, the gravitational potential energy is dissipated in a controlled manner through damping forces, transforming the potentially harmful rapid drop into a safe, controlled extension process that maintains functionality while ensuring user safety.
2Productivity
If the toothed wheel spins freely during insertion, then the extension process is quick, but the internal tube inserts too rapidly causing safety hazards
Solution Approach 1:
The damping unit provides preliminary resistance to the spinning motion of the toothed wheel during insertion, preventing excessive speed buildup before the internal tube fully engages with the external tube. This counteracting force ensures that the extension process remains controlled throughout the entire insertion sequence.
Solution Approach 2:
The damping unit dynamically adjusts the resistance applied to the toothed wheel's rotation based on the insertion progress. As the internal tube moves into the external tube, the damping force modulates to maintain optimal extension speed, allowing efficient extension while preventing hazardous rapid insertion through real-time dynamic control of the spinning motion.
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 ensures safe and controlled positioning of cargo, preventing damage from rattling and falling, and avoids rapid tube drops when used as a post by damping the spinning of the toothed wheel during insertion.
Implementation Method 1
The damping unit is located on the mount for damping the spinning of the toothed wheel and therefore the insertion of the internal tube into the external tube
Data Source
AI summary
A telescopic supportive apparatus includes an external tube, an internal tube, a mount, a toothed wheel, a handle, a first detent and a second detent. The internal tube is telescopically inserted in the external tube and formed with a series of recesses. The mount is secured to the external tube. The toothed wheel is supported on the mount and formed with teeth for insertion in the recesses. The handle is supported on the mount. The first detent is movably located on the mount and formed with a ratchet for engagement with the teeth. The second detent is movably located on the mount and formed with a ratchet for engagement with the teeth. The damping unit is located on the mount for damping the spinning of the toothed wheel and therefore the insertion of the internal tube into the external tube.