Belaying Device Automatic Rope Blocking Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing belaying devices require manual intervention to block the rope during falls, and semiautomatic devices are not reliable for partial rope release, with both types depending on user skill and correct rope positioning for effective operation.
Innovation Solution
A belaying device with a main body composed of two flat plates and a carabiner that automatically blocks the rope upon sudden tension, using a mobile lever and contrast element to generate friction, preventing accidental movement and allowing controlled release through manual device manipulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If manual belaying devices are used, then the device structure is simple and cost-effective, but the blocking reliability depends on user skill and manual intervention
Solution Approach 1:
The belaying device automatically blocks the rope during a fall without requiring manual intervention. The carabiner moves along the opening outline under rope tension and automatically engages with the projecting tooth to create friction and stop the rope, making the system self-activating and eliminating dependency on user skill.
Solution Approach 2:
The carabiner acts as an intermediary element between the rope and the device body. It transfers the rope tension force to move along the opening outline and engages with the projecting tooth to generate friction, serving as the active component that enables automatic blocking.
2Extent of automation
If semiautomatic devices with cam mechanisms are used, then automatic blocking is achieved, but the device complexity increases and partial rope release becomes unreliable
Solution Approach 1:
The device automatically blocks the rope during a fall through the carabiner's movement along the opening outline and engagement with the projecting tooth. The system self-activates based on rope tension without requiring manual handling or complex cam mechanisms.
Solution Approach 2:
Instead of using a complex cam mechanism to achieve blocking, the invention inverts the approach by using a simple opening outline with a projecting tooth that the carabiner naturally engages with under tension. The blocking function is achieved through the geometry of the opening rather than a mechanical cam.
3Device complexity
If manual rope handling is required for blocking, then device structure is simple, but user dependency and operation difficulty increase
Solution Approach 1:
The device automatically performs the blocking function without requiring the user to manually handle the rope. The carabiner moves along the opening outline and engages with the projecting tooth automatically under rope tension, eliminating the need for user skill and manual intervention.
4Device complexity
If friction-based blocking is used, then the blocking mechanism is simple, but controlled rope release becomes difficult
Solution Approach 1:
The device transitions from a static friction-based blocking mechanism to a dynamic system where the carabiner can move along the opening outline. During normal use, the carabiner is held in place by a retaining element allowing friction blocking. During a fall, the carabiner moves automatically to engage with the projecting tooth for strong blocking, and can be manually repositioned for controlled release.
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
Ensures high reliability and security in blocking the rope during falls and controlled release, reducing user dependency on manual handling and improving safety and efficiency in both belaying and descending applications.
Implementation Method 1
The particular housing shape allows to apply friction on the rope, thereby limiting the force to be applied by the hand of person securing the falling companion for blocking the rope.
Implementation Method 2
a mobile lever disposed by a spring in a contrapposed position respect to the tooth the opening outline is provided with
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
It is described a belaying device for blocking a rope comprising a main body formed by two flat plates constrained one to each other preferably according to two parallel planes by means of a plurality of spacing pins. The rope is inserted inside the device body further comprising a carabiner attached to the main body by passing through an opening on the device body. The carabiner allows the belaying device to be constrained to an user, or an anchorage point, and it is movable at the opening between a non - blocking position of the rope, that is the condition of normal use, and an emergency position wherein the rope is blocked, and vice versa.