Rotating Shielding Plate for Toilet Nozzle Water Adhesion
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Solution Overview
Problem
Conventional sanitary washing devices face challenges in effectively squirting water to adhere to the front side of a toilet bowl due to the nozzle's positioning and the obstruction caused by a shielding plate, leading to inefficient water distribution and adhesion.
Innovation Solution
A sanitary washing device with a rotatable shielding plate and a nozzle that advances and retracts, allowing the shielding plate to change positions to minimize obstruction and optimize water distribution, ensuring water adheres to the front side of the bowl by adjusting its angle and position relative to the nozzle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the nozzle is greatly advanced from the casing, then the nozzle can reach a position to squirt water toward the front side of the bowl, but the vertical position of the spout hole becomes low making it difficult to cause water to adhere to the front side of the bowl
Solution Approach 1:
The shielding plate is made rotatable to dynamically adjust its position based on the nozzle's advance state. When the nozzle is greatly advanced, the shielding plate rotates to a second position that is less obstructive, allowing water to reach the front side of the bowl. This dynamic adjustment resolves the contradiction by adapting the shielding plate's position to the nozzle's variable position.
Solution Approach 2:
The system changes the parameter of the shielding plate's rotational angle based on the nozzle's advance distance. By adjusting the shielding plate's angle (from first position when nozzle is retracted to second position when nozzle is advanced), the system optimizes water direction and adhesion location, maintaining precision despite large nozzle displacement.
2Manufacturing precision
If the shielding plate is provided frontward of the stored nozzle, then the vertical position of the spout hole is sufficient when the nozzle is stored, but the water undesirably impacts the shielding plate making it difficult to cause water to adhere to the front side of the bowl
Solution Approach 1:
The shielding plate transitions from a static component to a dynamic one by introducing rotational capability. It rotates between a first position (when nozzle is retracted) and a second position (when nozzle is advanced), allowing water to pass through or around it effectively. This eliminates the harmful water impact while maintaining adequate spout hole position.
Solution Approach 2:
The rotatable shielding plate acts as an intermediary element that mediates between the nozzle and the bowl. By rotating to appropriate positions, it facilitates water flow toward the front side of the bowl without causing unwanted impact, thus resolving the conflict between position adequacy and water impact prevention.
3Device complexity
If a fixed shielding plate is used, then the structure is simple, but the water distribution efficiency is reduced due to obstruction and inability to adapt to different nozzle positions
Solution Approach 1:
The shielding plate is designed to rotate between different positions based on nozzle advancement state. This dynamic capability significantly improves water distribution efficiency by reducing obstruction when the nozzle is advanced and preventing water impact when the nozzle is retracted, while adding only moderate structural complexity through the rotation mechanism.
Data Source
AI summary
A sanitary washing device is on a toilet including a bowl. The sanitary washing device includes a casing, a nozzle, a shielding plate, and a controller. The nozzle washes a human body private part. The nozzle is advanceable and retractable between a storage position and an advanced position. The shielding plate is rotatable with respect to the casing and positioned frontward of the nozzle when the nozzle is at the storage position. The controller controls an operation of the nozzle. The nozzle has a first spout hole squirting water. The shielding plate is at a first position when the nozzle is at the advanced position. The controller performs a frontward washing operation of squirting water after using the sanitary washing device. A part of the shielding plate is positioned frontward of a front end part of the nozzle in the frontward washing operation.