Telescopic Edge Protection Post Locking for Stable Mounting
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Solution Overview
Problem
Existing telescopic edge protection posts are cumbersome to mount between a floor and a ceiling, requiring users to hold the inner tube in an extended position while operating the tensioning lever, leading to instability and rattling noise due to play between the tubes.
Innovation Solution
A telescopic edge protection post with a polygonal cross-section and a locking mechanism featuring a fixed and movable element, where the movable element engages with two adjacent sides of the inner tube at a corner, allowing for easy extension and self-locking, reducing instability and noise by fixing the inner tube relative to the outer tube in all transverse directions, and a lower tensioning device at the floor end to distribute weight more evenly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the user holds the inner tube in the extended position while operating the lever to tension the post, then the post can be mounted between floor and ceiling, but the mounting process becomes troublesome and requires simultaneous coordination of multiple actions
Solution Approach 1:
The movable element is pre-configured to automatically engage with the inner tube when the post is extended, eliminating the need for simultaneous manual coordination. The gravity-assisted movement of the movable element into the locking position occurs automatically during the extension process, performing the locking action in advance of final tensioning.
Solution Approach 2:
The locking mechanism is designed to be self-actuating through gravity force. The movable element automatically moves into the locking position and engages with the inner tube without requiring external manual intervention beyond the initial extension action, making the system service itself during the mounting process.
2Stability of the object's composition
If a locking mechanism engages with a single side or two opposite sides of the inner tube, then the structure is simpler, but the post exhibits play between tubes causing instability and rattling noise
Solution Approach 1:
The movable element is positioned at a corner of the inner tube and engages with two adjacent sides rather than opposite sides, creating an asymmetric locking configuration. This corner engagement geometry provides stabilization in all transverse directions simultaneously, eliminating play and rattling noise while maintaining structural simplicity.
Solution Approach 2:
The locking mechanism transitions from engaging the inner tube at a single point or along a single axis to engaging at a corner where two adjacent sides meet. This adds a dimensional aspect to the locking, providing constraints in multiple transverse directions simultaneously and eliminating instability.
3Reliability
If the movable element is positioned to engage with two adjacent sides of the inner tube at a corner, then the inner tube is fixed in all transverse directions eliminating play and noise, but the engagement geometry becomes more specific
Solution Approach 1:
The movable element is specifically configured to engage with two adjacent sides of the inner tube at a corner position, creating an asymmetric engagement geometry. This corner-based engagement provides reliable fixation in all transverse directions while the engagement surfaces are designed with simple planar geometries that are straightforward to manufacture.
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
Facilitates easy and stable mounting of the telescopic edge protection post by allowing simple maneuvering of the movable element for locking, eliminating instability and rattling noise, while the lower tensioning device reduces weight at the ceiling end, making the post easier to handle and operate.
Implementation Method 1
the engagement between the movable element and the inner tube, in the locking position, is frictional. The locking mechanism is thereby self-locking.
Implementation Method 2
the locking mechanism may be arranged to enable the movable element to enter the locking position by means of the gravity force, i.e. by means of its own weight.
Data Source
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AI summary
A telescopic edge protection post (1) arrangeable between a floor and a ceiling, wherein the telescopic edge protection post comprises an outer tube (2) having a floor end (3) and a top end (4), and an inner tube (5) having a bottom end and a ceiling end (7). Each tube has a polygonal cross-section. The inner tube extends into the outer tube and is movable with respect thereto between an extended position and a collapsed position. The post further has a locking mechanism (8) arranged to lock the inner tube with respect to the outer tube, and a tensioning device. The locking mechanism comprises a fixed element (9), which is attached to the outer tube at its top end, and a movable element (10), which is movable with respect to the fixed element between a locking position in which the movable element engages with the inner tube and the fixed element to prevent the inner tube from being retracted into the outer tube, and a non-locking position in which the inner tube is retractable into the outer tube. The movable element is arranged at a corner of the inner tube and is engaged with, at least in the locking position, first two adjacent sides of the inner tube at said corner. Thereby, when in the locking position, the movable element fixes the inner tube relative to the outer tube in all transverse directions of the telescopic edge protection post.