Fall Protection Stayer With Notch-Locking Mechanism
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Solution Overview
Problem
Existing fall protection devices for construction sites, such as balcony parapets and elevator shafts, lack a secure mechanism to prevent the railing post from slipping out of the floor fixing device and the holding element from being lost or unintentionally released.
Innovation Solution
A post with a rod-shaped carrier featuring a locking device and a displaceable holding element with a notch that allows the locking element to engage when the holding element is displaced, ensuring it remains captive and can only be removed deliberately, combined with an elastic element to ensure the locking element returns to its locked position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the holding element is made displaceable along the rod-shaped carrier for flexibility in positioning safety elements, then the adaptability is improved, but the holding element may unintentionally slip off the carrier and be lost
Solution Approach 1:
The rod-shaped carrier is segmented with multiple notches at different positions, allowing the holding element to be positioned at various locations while maintaining secure engagement through the notch-locking element mechanism
Solution Approach 2:
The locking element acts as an intermediary between the holding element and the rod-shaped carrier, engaging with the notch to prevent the holding element from slipping off while allowing controlled displacement to different positions
2Reliability
If the locking element is designed to protrude perpendicularly for secure locking in the receptacle, then the reliability of locking is improved, but the device complexity increases due to the movement mechanism required
Solution Approach 1:
The locking element is designed to be movable between a retracted position and a protruding position, allowing it to adapt to different states (locked/unlocked) while maintaining a relatively simple structural implementation
Solution Approach 2:
The locking element utilizes the elastic element to automatically return to its protruding locked position after being pressed in, eliminating the need for additional active mechanisms to maintain the locked state
3Reliability
If the elastic element is added to ensure the locking element returns to its locked position, then the reliability is improved, but the device complexity increases due to additional components
Solution Approach 1:
The elastic element enables the locking element to automatically return to its protruding locked position after being pressed in, providing self-service functionality that ensures reliable locking without requiring external actuation or complex control mechanisms
Solution Approach 2:
The elastic element changes the physical state of the locking element by applying restoring force, transforming the locking element from a static component to one that dynamically returns to its functional position
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 solution effectively secures the holding element on the rod-shaped carrier, preventing unintentional release or loss, and allows for secure locking in a receptacle, ensuring the post remains fixed and the retaining element is not accidentally detached.
Implementation Method 1
The locking device also has an elastic element, in particular a spring formed inside the carrier, which applies a force to the at least one locking element in the direction of the protruding position
Data Source
AI summary
The invention relates to a stayer (10) for fall protection (100), in particular for securing structures. The stayer (10) comprises a rod-shaped stayer (12) that has a locking device (14) having at least one locking element (15) for arresting the carrier (12) in a receptacle (16) in the region of the first end thereof and a holder element (18) for receiving a retaining element (19), wherein the holder element (18) can be moved along the rod-shaped carrier (12). The holder element (18) has at least one notch (20) on the side thereof facing the first end of the carrier (12).