Self-Locking Rope Descent Device With Anti-Panic Lever
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing rope descent devices lack effective self-locking mechanisms with integrated anti-panic systems to ensure user safety, particularly in situations of loss of control due to inexperience or fatigue.
Innovation Solution
A self-locking rope descent device with a lever mechanism and anti-panic system, featuring a fixed pulley and dual plates connected by a hinged lever, which tilts between release and holding positions, incorporating an elastic return mechanism and a compact double lever mechanism for enhanced control, and an anti-panic mechanism that automatically resets to prevent complete opening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a self-locking mechanism is added to the rope descent device, then the reliability of rope locking is improved, but the device complexity increases
Solution Approach 1:
The patent combines the self-locking mechanism with the existing lever mechanism by integrating a locking element that engages with the lever's movement path. The locking element is spring-loaded and automatically engages when the lever moves to the closed position, merging the locking function into the existing structural framework rather than adding a completely separate mechanism.
Solution Approach 2:
The self-locking mechanism is designed to automatically engage and disengage based on the lever's position. When the lever closes, the locking element automatically engages to lock the rope; when the lever opens, the spring automatically disengages the lock. This self-service characteristic eliminates the need for additional control mechanisms or user intervention for locking/unlocking.
2Reliability
If an anti-panic mechanism is integrated into the release mechanism, then the safety in loss of control situations is improved, but the device complexity increases
Solution Approach 1:
The anti-panic mechanism incorporates a secondary locking element that prevents the release lever from opening beyond a predetermined position. This preliminary protective action is always in place, preventing panic-induced complete opening even if the user loses control. The secondary lock engages automatically when the primary release mechanism is activated, providing a fail-safe barrier.
Solution Approach 2:
The release mechanism is divided into two independent locking stages: a primary lock controlled by the release lever and a secondary anti-panic lock that provides a backup restriction. This segmentation allows each locking stage to perform its specific function independently, with the secondary lock serving as a dedicated safety barrier against complete opening.
3Reliability
If a fixed pulley with offset axis is used in the lever member, then the rope locking effectiveness is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The fixed pulley is deliberately designed with its axis offset from the lever's pivot point, creating an asymmetric geometry. This asymmetric positioning is intentional and provides the mechanical advantage needed for effective rope locking. The offset creates a lever arm that amplifies the locking force when the lever closes, improving the reliability of rope retention.
Solution Approach 2:
The offset pulley axis is pre-positioned during manufacturing to ensure that when the lever closes, the rope is automatically positioned at the optimal angle for locking. This preliminary geometric arrangement ensures that the rope engages the pulley groove at the correct position, maximizing friction and locking effectiveness without requiring additional adjustment 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
The device provides secure rope locking and automatic reset in case of loss of control, ensuring user safety by preventing accidental rope release and allowing intuitive operation with reduced risk of mechanical failure or tampering.
Implementation Method 1
a return means in the form of an elastic member, capable of moving together with the lever member, hinged to the lever member... the elastic member is able to return the lever member into the release position
Implementation Method 2
The principle forming the basis of the operation of such devices exploits the friction between the rope and the belay device and/or descender, which tends to slow down the downward movement of the climber
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present invention describes a safety device for sports and mountaineering activities equipped with an anti-panic mechanism. The safety device consists of a self-locking device comprising a body made of two parallel plates connected together at one end through a lever member hinged to both plates through a pin, so that, when assembled, said plates define a space in which a path for the rope is defined, said lever member being able to tilt between a release position and a holding position of said rope, said lever member also comprising a fixed pulley, arranged on a portion of said lever member that does not comprise the tilting pivot, said rope being intended to slide on said fixed pulley about an axis offset with respect to the axis of the tilting pivot of the lever member, said first plate comprising an inner face and an outer face, said outer face comprising a housing for a release mechanism of the rope and an anti-panic mechanism.