Corrugated Hose Assembly Positioning via Nipple Stops
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Solution Overview
Problem
Existing corrugated hose pipe assemblies face challenges in ensuring precise reproducibility of component positioning and assembly, leading to potential damage and defects due to incorrect assembly, and high production costs.
Innovation Solution
The assembly includes corrugated pipe pieces with radial nipple stops and hose nipples with collar-like stops, allowing for precise axial positioning and compression of the high-pressure hose, which is then secured by crimp sleeves, optimizing length coordination and material usage to prevent defects and reduce costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional assembly methods are used for corrugated hose pipe assemblies, then production can proceed with standard processes, but component positioning precision deteriorates leading to potential damage and defects
Solution Approach 1:
The patent applies preliminary action by pre-forming collar-like stops on the hose nipples and crimp sleeves before assembly. These pre-formed structural features automatically position the high-pressure hose and corrugated pipe at correct locations during assembly, eliminating the need for complex positioning fixtures and ensuring consistent positioning precision without compromising assembly reliability
Solution Approach 2:
The patent introduces collar-like stops as intermediary positioning elements between the hose nipples/crimp sleeves and the high-pressure hose/corrugated pipe. These stops act as mechanical mediators that transfer and control the positioning force, ensuring precise component alignment while preventing excessive compression or stretching that would damage the components
2Manufacturing precision
If strict dimensional control is maintained for all components, then assembly precision is improved, but production costs increase due to tighter tolerances
Solution Approach 1:
The patent applies local quality by concentrating dimensional control requirements only at critical locations - specifically the collar-like stops on hose nipples and crimp sleeves. The main body components can be manufactured with standard tolerances, while only the localized stop features require precise dimensional control. This approach maintains assembly precision where needed while significantly reducing overall production costs
Solution Approach 2:
The collar-like stops are pre-formed on hose nipples and crimp sleeves during their respective manufacturing processes. This preliminary formation of positioning features allows standard tolerance components to self-align during assembly, eliminating the need for expensive tight-tolerance machining of all components while maintaining precise final assembly dimensions
3Manufacturing precision
If complex assembly procedures are implemented to ensure precise positioning, then component positioning is improved, but assembly time and production complexity increase
Solution Approach 1:
The patent implements self-service through the collar-like stops that automatically perform the positioning function during assembly. As components are pushed together, the stops self-align and locate the high-pressure hose and corrugated pipe at correct positions without requiring external positioning devices or complex procedures. This maintains precise reproducible positioning while simplifying the assembly process and improving productivity
Solution Approach 2:
The positioning functionality is preliminarily built into the hose nipples and crimp sleeves through the pre-formed collar-like stops. This preliminary incorporation of positioning capability eliminates the need for complex assembly procedures, special tools, or skilled operators, allowing standard assembly processes to achieve precise and reproducible component positioning
Data Source
AI summary
A corrugated hose pipe assembly has a corrugated pipe that is surrounded by an elastomeric high-pressure hose. The ends of the high-pressure hose are grasped and fixed by connectors. The connectors each have a pipe piece (210, 220) which is fitted with a circumferential, radially projecting stationary nipple stop (211, 221) at the axial end thereof facing the corrugated pipe. A hose nipple (310, 320), which is positively mounted on each pipe piece (210, 220), is provided with a radially protruding, circumferential hose stop (311, 321) at the end of the hose nipple (310, 320).