Sanitary Washing Hose Connection Layout to Prevent Kinking and Tilting
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Solution Overview
Problem
Sanitary washing devices face issues with kinking of water supply hoses and tilting when detached from toilets due to the reaction force, making them difficult to place temporarily and hindering compact design.
Innovation Solution
A sanitary washing device with a flexible water supply hose that extends backward or sideward from a concave portion in the casing, reducing kinking and tilting, and allowing for a more compact vertical design by eliminating the need for internal pipe connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the water supply hose extends downward from the bottom surface of the casing, then the connection to water supply source is simplified, but the hose kinks when sandwiched between the floor and casing or between the toilet and casing, and the casing tilts due to reaction force
Solution Approach 1:
The water supply connection part is positioned on the side surface of the casing rather than the bottom surface, changing the connection direction from vertical to horizontal. This dimensional change allows the hose to extend sideways without kinking when the device is placed on the floor or toilet, while maintaining simple connection to the water supply source.
2Device complexity
If the water supply hose extends downward from the bottom surface of the casing, then the connection structure is simplified, but a height sufficient to bend the hose or provide internal pipe member is necessary, making the casing larger in vertical direction
Solution Approach 1:
By positioning the water supply connection part on the side surface of the casing, the hose connection is shifted from the vertical dimension to the horizontal dimension. This eliminates the need for internal hose bending space or additional pipe members, thereby reducing the casing height while maintaining connection simplicity.
3Ease of manufacture
If the water supply connection part is provided on the bottom surface of the casing, then the hose connection is straightforward, but the hose cannot extend backward or sideward to prevent kinking
Solution Approach 1:
The water supply connection part is relocated from the bottom surface to the side surface of the casing, enabling the hose to extend in horizontal directions (backward or sideward) rather than vertically downward. This maintains straightforward connection while allowing flexible hose routing to prevent kinking.
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 solution prevents kinking and tilting, enabling easier temporary placement and a more compact design, while reducing the number of parts and costs by eliminating internal pipe connections.
Implementation Method 1
The valve unit includes an electromagnetic valve
Implementation Method 2
The water supply hose is flexible
Data Source
AI summary
A sanitary washing device includes a nozzle, a valve unit, a casing, a water supply hose, and a water supply connection part. The nozzle is configured to discharge water toward an ano-genital region. The valve unit is provided on a pipe line between a water supply source and the nozzle. The valve unit includes an electromagnetic valve. The water supply hose is configured to supply water from the water supply source into the casing. The water supply hose is flexible. The water supply connection part connects the water supply hose and the valve unit. The casing has a concave portion recessed upward from a bottom surface of the casing. The concave portion has an upper surface and a side surface extending from the upper surface and facing backward or sideward. The water supply connection part is provided on the side surface of the concave portion.