Spliced Rope End With Segmented Sewing And Splice Zones
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Solution Overview
Problem
Existing methods for forming a looped rope end, such as folding and sewing, or splicing, face issues with abrupt transitions, susceptibility to errors, and inconsistent breaking loads, particularly in safety-critical applications where visual appeal and reliability are essential.
Innovation Solution
A rope end is created by folding the rope back to form a loop with a splice area where the rope end piece is guided within the rope section and sewn together using load-bearing stitching, allowing for a shorter splice area and more reliable tensile load absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the rope end is folded back and sewn to form a loop, then the manufacturing process is simple and can be automated, but there is an abrupt transition that creates visual imperfection and increases the risk of catching on obstacles
Solution Approach 1:
The invention merges the sewing method and splicing method into a hybrid solution. The rope end piece is both sewn to the rope section and spliced within it, combining the advantages of both methods to achieve both manufacturability and aesthetic appearance.
Solution Approach 2:
The connection area is divided into two distinct zones: a sewing area for automated attachment and a splice area for gradual transition. This segmentation allows each zone to fulfill its specific function optimally.
2Shape
If the rope end is spliced by guiding it over a long distance within the rope section, then the transition is uniform and aesthetically pleasing, but the splice area becomes long and the process becomes complex requiring skilled hand work
Solution Approach 1:
The connection is divided into a sewing area where automated stitching provides initial attachment, and a shorter splice area where the rope end is guided within the rope section. This segmentation reduces the required splice length while maintaining aesthetic appearance.
Solution Approach 2:
The sewing acts as an intermediary that provides initial attachment and stability, allowing the splice area to be shorter than in traditional splicing while still achieving the desired uniform transition.
3Reliability
If traditional splicing is used to ensure stability against tensile stress, then the loop does not come loose, but the splice quality strongly depends on the skill of the person making it, leading to inconsistent breaking loads
Solution Approach 1:
The sewing is performed first as a preliminary action that attaches the rope end piece to the rope section before splicing. This preliminary attachment ensures proper positioning and reduces the skill level required for the subsequent splicing step, leading to more consistent results.
Solution Approach 2:
The invention combines sewing and splicing methods, where the sewing provides initial stability and the splicing provides additional mechanical interlocking. This combination ensures reliable tensile stress resistance while reducing dependence on individual splicer skill.
4Reliability
If a long splice area is used to guide the rope end piece, then sufficient stability against tensile stress is achieved, but the production time increases
Solution Approach 1:
The connection area is segmented into a sewing area and a shorter splice area. The sewing provides initial attachment that allows the splice area to be significantly shorter than in traditional splicing, reducing production time while maintaining tensile load absorption capability.
Solution Approach 2:
The sewing acts as an intermediary that provides preliminary attachment, allowing the splice process to be completed more quickly while still achieving sufficient stability against tensile stress.
Data Source
AI summary
The end (1) has a rope e.g. e.g. braided rope, piece (3) reverted for formation of a loop (2) and provided with a rope section (4) that is guided for the loop. A splice area (5) is arranged at a distance from the loop by a sewing area (6) in which the rope piece and the rope section are sewed against one another and are sewed with each other by a load bearing stitching (7). The stitching is designed as a continuous sewing in the sewing area, and another load bearing stitching (8) is designed as a continuous sewing in the splice area.