Sanitary Cleansing Device Nozzle Assembly Massage Control
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Solution Overview
Problem
Sanitary cleansing devices face challenges in providing a comfortable defecation promotion effect without backflow of cleansing water, and in ensuring a sufficient feeling of cleansing and satisfaction for users, especially those who dislike backflow.
Innovation Solution
A sanitary cleansing device with a nozzle assembly that sprays cleansing water obliquely upward, a nozzle drive device for moving the water splash point in front-to-back and right-to-left directions, and a spray control device that executes a massage cleansing mode with specific movement patterns and flow velocity control to promote defecation comfortably without backflow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If cleansing water is sprayed at high flow velocity to promote defecation, then defecation promotion effect is improved, but backflow of cleansing water occurs causing discomfort
Solution Approach 1:
The spray control device operates in periodic cycles, alternating between a defecation promotion mode (spraying at high flow velocity to stimulate defecation) and a massage cleansing mode (spraying at lower flow velocity to provide comfortable cleansing). This periodic switching allows the system to achieve strong defecation promotion effects while avoiding continuous backflow that causes discomfort.
Solution Approach 2:
The system dynamically adjusts spray flow velocity based on the operational mode. During defecation promotion, higher velocity is applied; during massage cleansing, lower velocity is applied. This dynamic control allows optimization of both defecation promotion effect and user comfort without fixed limitations.
2Productivity
If cleansing water is sprayed in a fixed position to provide strong cleansing force, then cleansing effectiveness is improved, but acclimatization occurs reducing user satisfaction
Solution Approach 1:
The nozzle assembly is driven to move in multiple directions (front-to-back and right-to-left) during the massage cleansing mode, creating dynamic water splash point movement across the private area. This prevents acclimatization by continuously varying the spray position while maintaining effective cleansing coverage.
Solution Approach 2:
The system adds movement in multiple spatial dimensions (front-to-back direction and right-to-left direction) to the spray pattern. This multi-dimensional movement expands the water splash point coverage area and prevents the user from adapting to a fixed spray position, thereby maintaining satisfaction.
3Area of stationary object
If water splash point moves in multiple directions to expand cleansing area, then cleansing coverage is improved, but device complexity increases
Solution Approach 1:
The nozzle drive device is designed to perform multiple functions: it drives the nozzle assembly in the front-to-back direction, in the right-to-left direction, and controls rotational movement. This multi-functional drive mechanism achieves comprehensive area coverage while avoiding the need for separate mechanisms for each movement direction.
Data Source
AI summary
Provided is a sanitary cleansing device configured so that user's defecation can be promoted with a comfortable feeling by spraying of cleansing water. The present invention provides a sanitary cleansing device (1) including a nozzle assembly (6) provided with a spray port, a nozzle drive device (12), an operation device (10) operated by a user, and a spray control device (20) configured to actuate the nozzle drive device to execute a massage cleansing mode. The massage cleansing mode is a cleansing mode for repeating a predetermined massage cleansing cycle including a turning movement pattern for turning a water splash point of the cleansing water sprayed from the spray port at the periphery of a private area position of a seated human body and a front-to-back movement pattern for moving the water splash point through the private area position in a substantially front-to-back direction of the human body.