Safety Joint Housing Rollers to Prevent Hose Locking
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Solution Overview
Problem
Existing safety joint housing devices fail to prevent the plug or filling hose from locking in the lower opening of the casing when the safety joint is separated, leading to potential damage of the hydrogen filling device.
Innovation Solution
A safety joint housing device with a casing that includes a front roller and two side rollers rotatably arranged at the lower opening, allowing the filling hose or plug to smoothly exit without locking, thereby preventing the filling device from being pulled.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the safety joint separates when a predetermined tensile load acts on the filling hose, then the filling device is protected from overturning and damage, but the plug or filling hose may lock in the lower opening of the casing causing the filling device to be pulled and damaged
Solution Approach 1:
A guide member with a hollow portion is introduced as an intermediary component between the plug/filling hose and the lower opening of the casing. The guide member receives the plug and filling hose when the safety joint separates, guiding them to move smoothly in the vertical direction and preventing them from locking in the lower opening, thus resolving the contradiction between safety joint separation function and prevention of harmful locking
Solution Approach 2:
The guide member extends in the vertical direction (another dimension) to provide a dedicated path for the plug and filling hose to exit the casing. By adding this vertical guidance dimension, the system prevents horizontal deviation that would cause the plug or filling hose to lock in the lower opening, while maintaining the safety joint separation function
2Ease of operation
If the filling hose swings during filling operation, then normal filling can proceed, but the moment due to swinging is applied to the filling hose mounting portion causing potential damage and hydrogen gas leakage
Solution Approach 1:
The guide member acts as an intermediary that supports the filling hose during swinging motion. By providing a guided path through the hollow portion, the guide member reduces the direct moment applied to the filling hose mounting portion while still allowing the filling hose to move flexibly during normal operation
Solution Approach 2:
The guide member is pre-installed in the casing to provide protective guidance before any damage can occur. It cushions the swinging motion of the filling hose by constraining it to move within the hollow portion, thereby preventing excessive moments from being applied to the mounting portion during normal operation
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 device effectively prevents the filling device from being pulled and damaged by ensuring the filling hose or plug can smoothly exit, even when the safety joint separates due to a predetermined tensile load.
Implementation Method 1
a front roller (30) disposed on a front side of the casing at a lower opening from which the filling hose (61) is led out from the casing so as to be rotatable about a horizontal axis; and two side rollers (40) adjacent to the front roller (30) and rotatably arranged about horizontal axes orthogonal to the axis of the front roller (30)
Data Source
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AI summary
[OBJECT] To provide a safety joint housing device for preventing a plug or a filling hose from being locked in a lower opening of a casing when the safety joint is separated, thereby preventing a filling device from falling over and being damaged. [SOLUTION] A safety joint housing device 100 for housing a safety joint 101 including a plug 10 connected to a filling hose 61 and a socket 20 provided in a filling device, the safety joint separating when a tensile load of a predetermined level or over is applied, the safety joint housing device 100 including: a casing for housing the plug 10 and the socket 20 in a connected state; a front roller 30 disposed on a front side of the casing at a lower opening from which the filling hose 61 is led out from the casing so as to be rotatable about a horizontal axis; and two side rollers 40 adjacent to the front roller 30 and rotatably arranged about horizontal axes orthogonal to the axis of the front roller 30; wherein the filling hose 61 passes through the casing side of a U-shaped portion formed by the front roller 30 and the two side rollers 40.