Flushing Hose Joint Assembly With Low-Resistance Torque Transmission
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Solution Overview
Problem
Existing flushing hose joints are complex to assemble and require improved designs for simpler construction and efficient torque transmission while minimizing flow resistance.
Innovation Solution
A flushing hose joint featuring a bolt element and a holding element with a fork-shaped retaining element, allowing for plug-in assembly and torque transmission, along with a hollow spherical holder for sealing and tensile force support, which maintains low flow resistance and two degrees of freedom for the joint.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional articulated pipe connection with pins and slots is used, then torque transmission is achieved, but the assembly becomes complex and difficult to assemble
Solution Approach 1:
The joint is divided into two separate elements: a holding element with fork-shaped retaining element and a bolt element. This segmentation allows each component to be simpler in design while collectively achieving the torque transmission function, resolving the contradiction between reliability and complexity.
Solution Approach 2:
The bolt element is inserted into the gap between the two sub-areas of the holding element, creating a nested structure. The cylindrical part of the bolt element fits within the fork-shaped retaining element, simplifying assembly through a plug-in solution while maintaining torque transmission capability.
2Ease of operation
If torque-transmitting parts are placed outside the flow channel, then assembly is easier, but flow resistance increases and assembly accessibility decreases
Solution Approach 1:
The torque-transmitting parts (holding element and bolt element) are extracted from the traditional external positioning arrangement and placed inside the flow channel. This extraction allows the joint to maintain compact dimensions while improving assembly accessibility, and the streamlined design minimizes flow resistance impact.
Solution Approach 2:
The bolt element has a curved outer contour that is streamlined to reduce flow resistance. The curvature is designed to match the flow channel geometry, allowing the torque-transmitting parts to be positioned within the flow channel while minimizing turbulence and pressure loss.
3Ease of manufacture
If a simple fork-shaped retaining element is used, then assembly is simplified, but torque transmission reliability may be compromised
Solution Approach 1:
The holding element features an asymmetric fork-shaped retaining element with a gap designed to receive the bolt element. This asymmetric design provides simple assembly through plug-in configuration while the specific geometry of the gap and sub-areas ensures reliable torque transmission by creating proper contact surfaces.
Solution Approach 2:
The holding element is designed with pre-formed sub-areas having surfaces facing each other, creating a prepared gap structure before the bolt element is inserted. This preliminary configuration ensures that when the bolt element is pushed into the gap, proper torque transmission contact is immediately established, maintaining reliability while simplifying assembly.
Data Source
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AI summary
Disclosed is a flushing hose hinge for the torque-transmissive, articulated attachment of a flushing hose functional element, such as a flushing hose rotation device (1) or a flushing nozzle, which has a housing (13), to a flange (2), which is disposed, in particular, as a flushing hose flange, the flushing hose hinge (7) forming a flow channel (16), the flushing hose hinge (7) having a bolt element (17) and a holding element (18), of which one is fastened or is to be fastened to the housing and another is fastened or is to be fastened to the flange, and the holding element (18) having two portions (22), which are aligned towards each other at their surfaces and between which an, in particular, cylindrical part of the bolt (17), which part has a longitudinal axis (23) and is provided with an outer contour that is at least partially curved viewed perpendicularly to the longitudinal axis, is mounted such that torque can be transmitted between the holding element and the bolt element. Further disclosed are a flushing hose rotation device and a flushing nozzle that comprises such a flushing hose hinge.