Segmented Hose Joint Sleeve for Secure Silicone Hose Retention
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Solution Overview
Problem
Existing hose joint designs struggle to securely connect flexible hoses made of silicone rubber to a hose insertion core tube due to the difficulty in producing a tightening ring with a complex shape, as the uneven portions on the inner wall surface of the tightening ring are undercut during resin molding, making mass production challenging.
Innovation Solution
A hose joint sleeve with a deformable sleeve main body that includes belt-like bodies divided at equal intervals, featuring fitting parts and recessed parts that engage to couple and radially contract, ensuring secure connection of the flexible hose to the nipple without a complex structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a tightening ring with uneven portions on the inner wall surface is used to securely connect the flexible hose, then the connection reliability is improved, but the manufacturing complexity increases due to undercut features that prevent mass production
Solution Approach 1:
The tightening ring is divided into multiple arc-shaped segments that can be separately molded and then assembled. Each segment contains the necessary uneven portions for securing the hose, but the segmentation allows these complex features to be manufactured more easily using injection molding, as each segment can be produced independently without undercut issues preventing mass production
Solution Approach 2:
The arc-shaped segments are designed to be nested or interlocked with each other to form the complete tightening ring. The segments include engagement features that allow them to be assembled together, creating the full circular structure with the necessary uneven portions for hose retention, while maintaining manufacturing simplicity
2Productivity
If the tightening ring structure is simplified for mass production, then the productivity is improved, but the ability to securely retain the flexible hose is compromised
Solution Approach 1:
By segmenting the tightening ring into multiple arc-shaped pieces that can be independently molded and assembled, the design achieves both mass production capability through simplified molding processes and secure hose retention through the preserved uneven portion features on each segment
Solution Approach 2:
The multiple arc-shaped segments are combined through engagement features to form the complete tightening ring structure. This merging allows the system to achieve the functional requirements of a complex unified structure while benefiting from the manufacturing advantages of segmented production
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 hose joint sleeve effectively prevents the flexible hose from slipping off the nipple, allowing for mass production of a simple resin molded product that securely retains the hose, improving productivity and reducing costs.
Implementation Method 1
the hose joint sleeve being configured to press and tighten the flexible hose toward an outer peripheral surface of the nipple with radial contraction and deformation of the sleeve main body
Implementation Method 2
the fitting part and the part to be fitted are formed in shapes such that the fitting part and the part to be fitted engage with each other to couple the plurality of belt-like bodies
Data Source
AI summary
A hose joint sleeve includes a sleeve main body that is deformable in a radial direction and is provided to hold a flexible hose between the sleeve main body and a nipple of a hose joint. The hose joint sleeve is configured to press and tighten the flexible hose toward an outer peripheral surface of the nipple with radial contraction and deformation of the sleeve main body, so as to fasten the flexible hose to the nipple so as to prevent the flexible hose from slipping off by coupling a plurality of belt-like bodies divided in the same shape.