Lockable Carabiner Spring-Catch Layout for Mud-Resistant Strength
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing carabiners for mountaineering and work at heights face challenges in achieving a balance between compactness and mechanical strength, with designs often resulting in thick bodies that are difficult to manufacture and prone to malfunction due to complex configurations and sensitivity to dust and mud accumulation.
Innovation Solution
A C-shaped carabiner design featuring a gate that swivels between closed and open positions, supported by two springs with no direct attachment to the body, allowing for a compact and robust structure with improved protection against dust and mud, and a catch mechanism that facilitates easy opening by moving between blocking and release positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a thick gate is formed to achieve high mechanical performances, then the mechanical strength is improved, but the carabiner retains dust, moisture and mud which reduces lifespan
Solution Approach 1:
The gate is divided into multiple segments or sections, allowing the structure to maintain strength while creating gaps that prevent dust and moisture accumulation. This segmentation enables the gate to retain mechanical integrity without forming a continuous thick structure that traps contaminants.
Solution Approach 2:
The gate incorporates a porous structure that maintains mechanical strength while allowing dust, moisture and mud to pass through rather than being retained. The porous design enables contaminants to be expelled from the structure, preventing the accumulation problems associated with solid thick gates.
2Strength
If a thick body is formed to withstand all forces applied on the body, then the mechanical strength is improved, but the carabiner becomes complicated to manufacture and increases manufacturing cost
Solution Approach 1:
The body structure is segmented into modular components that can be manufactured separately and assembled. This approach maintains the overall strength required to withstand applied forces while simplifying the manufacturing process for each individual component, reducing complexity and cost.
Solution Approach 2:
Multiple structural functions are merged into integrated components that provide both strength and force distribution. By combining several functions into unified elements, the design achieves required mechanical strength without increasing manufacturing complexity, as fewer separate parts need to be produced and assembled.
3Reliability
If multiple components are used in the locking system, then the blocking function is improved, but the carabiner becomes sensitive to malfunctioning
Solution Approach 1:
Multiple locking functions are merged into a single integrated locking mechanism that performs blocking, latching, and releasing operations through one unified component system. This reduces the number of separate components that could malfunction while maintaining the reliability of the blocking function through the combined design.
Solution Approach 2:
The locking mechanism is designed with multi-functional components that perform multiple operations simultaneously. A single component executes blocking, securing, and releasing functions, reducing the overall component count and potential failure points while maintaining the reliability required for safe operation.
4Reliability
If springs are directly attached to the body, then the biasing function is improved, but the carabiner increases sensitivity to dust and mud accumulation
Solution Approach 1:
An intermediary mechanism or protective structure is introduced between the springs and the external environment. This intermediary element allows the springs to perform their biasing function while preventing direct contact with dust and mud, thereby protecting the springs from contamination that could impair their operation.
Solution Approach 2:
The spring housing or protective structure incorporates porous material that allows dust and mud to pass through rather than accumulate around the springs. This enables the springs to maintain their biasing function while the porous structure prevents harmful factors from building up to problematic levels.
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 design provides a better trade-off between compactness and lifespan, enhancing mechanical strength while reducing manufacturing complexity and sensitivity to environmental factors, ensuring reliable operation and extended lifespan.
Implementation Method 1
a first spring and a second spring each having a first end connected to the gate and a second end connected to the catch, the first spring and second spring each biasing the gate so that a rest position of the gate is the closed position and biasing the catch so that a rest position of the catch is the blocking position
Data Source
AI summary
A carabiner comprises a body and a gate fixed to the body to be movable between closed and open positions. A catch is fixed to the body and installed movable between a blocking position and a release position of the gate in the closed position. A first spring is connected to the gate and to the catch. The first spring biases the gate to the closed position and biases the catch to the blocking position. In the closed position, the first spring is curved with a first mean radius of curvature. In the open position, the first spring is curved with a second mean radius of curvature that is larger than the first radius of curvature.