Telescopic Vacuum Cleaner Tube Locking for Smooth Adjustment
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Solution Overview
Problem
Existing vacuum cleaner suction tubes often experience blockages in their actuating mechanisms, making it difficult to adjust the length of the suction tube effectively.
Innovation Solution
The vacuum cleaner suction tube features a clamping element positively connected to clamping wedges, allowing both wedges to be moved simultaneously by the clamping element, which is connected to a handle shell that can be moved out of the locking position to release the inner tube from engagement with the outer tube, utilizing a restoring mechanism to ensure the grip shell returns to the locking position, thus preventing wedges from dragging over the inner pipe surface and allowing for easy length adjustment in two directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the actuating mechanism uses clamping wedges to engage with latching depressions to lock the inner tube, then the locking reliability is improved, but the mechanism becomes prone to blockage when adjusting length
Solution Approach 1:
The actuating mechanism is segmented into distinct functional components: a clamping element for engagement/disengagement, clamping wedges for locking, and a slider for actuation. This segmentation allows each component to perform its specific function independently, reducing interference and blockage risks during operation.
Solution Approach 2:
The clamping element serves as an intermediary between the slider and the clamping wedges. When the slider moves, it actuates the clamping element, which in turn moves the clamping wedges to engage or disengage from the latching depressions. This intermediary mechanism ensures smooth, controlled movement and prevents direct blocking between the slider and locking components.
2Stability of the object's composition
If the clamping wedges are held in engagement with latching depressions to block inner tube movement, then the telescopic stability is improved, but the mechanism complexity increases
Solution Approach 1:
The clamping element and clamping wedges are combined into a single integrated assembly that moves together as one unit. This merging reduces the number of independent components and simplifies the actuating mechanism while maintaining stable telescopic locking through the unified clamping action.
Solution Approach 2:
The actuating mechanism transitions between two dynamic states: locked and unlocked. The clamping element and wedges dynamically adjust their position based on slider movement, providing stable locking when engaged and smooth telescoping when disengaged, thereby achieving both stability and operational simplicity.
3Ease of operation
If the handle shell is made displaceable to move clamping element away from longitudinal axis, then the unlocking functionality is improved, but the mechanism becomes more complex
Solution Approach 1:
The clamping element and clamping wedges are nested within the handle shell, which itself is nested within the outer tube. This nested arrangement allows the handle shell to displace laterally and actuate the clamping elements without requiring separate external mechanisms, simplifying the overall structure while enabling easy unlocking.
Solution Approach 2:
The handle shell is designed to displace in a direction perpendicular to the longitudinal axis of the suction tube. This dimensional change allows the clamping element to be moved away from the longitudinal axis, disengaging the clamping wedges from the latching depressions and enabling tube extension or retraction without complex longitudinal mechanisms.
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
This design minimizes the risk of blockage and allows for smooth adjustment of the suction tube length by ensuring the clamping wedges are lifted out of engagement without dragging, ensuring reliable telescoping functionality.
Implementation Method 1
the restoring means in a deflection of the grip from the locking position a restoring force to reset the grip i n exerts the locking position
Data Source
AI summary
A vacuum cleaner suction tube, having an inner tube received in an outer tube, is provided with an actuating mechanism having a grip structure provides a minimized risk of blocking. A clamping element has a form-fit connection with a pair of clamping wedges, so that both of the clamping wedges can be simultaneously moved with a single movement of a clamping element that is connected to the grip structure so that the clamping element is moved away from the longitudinal axis of the vacuum cleaner suction tube by sliding the grip structure out of the locking position, and both clamping wedges are simultaneously lifted out of engagement with retaining recesses of the inner tube by moving the clamping element away from the longitudinal axis of the vacuum cleaner suction tube, whereby sliding of the inner tube is enabled relative to the outer tube.