Eccentric Connection Nozzle for Compact Rotating Attachment
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Solution Overview
Problem
Existing private part washing nozzles are not downsized effectively, and their nozzle heads are not efficiently attachable and removable by rotation, leading to potential size increases and pressure loss issues.
Innovation Solution
A private part washing nozzle design featuring a nozzle head with eccentrically positioned connection portions and multilayer pipe structures, allowing for a single connection point that is coaxial with the nozzle head's central axis, enabling rotation-based attachment and removal while minimizing size and pressure loss by using linear flow passages for high-pressure spray ports.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the connection portion is positioned coaxially with the nozzle head's central axis, then the nozzle head can be easily attached and removed by rotation, but the nozzle size increases and pressure loss occurs
Solution Approach 1:
The connection portion is positioned eccentrically relative to the central axis of the nozzle head, creating an asymmetric configuration. This allows the nozzle head to be attached and removed by rotation while minimizing the overall nozzle size by optimizing the spatial arrangement of internal components around the eccentric connection point
2Ease of operation
If the connection portion is positioned coaxially with the nozzle head's central axis, then the nozzle head can be easily attached and removed by rotation, but pressure loss increases
Solution Approach 1:
The eccentric positioning of the connection portion creates an asymmetric flow passage configuration that optimizes water flow paths. By strategically positioning the connection point away from the central axis, the design reduces flow resistance and pressure loss while maintaining the rotational attachment capability
3Reliability
If multiple connection portions are used, then the nozzle head can be securely attached, but the nozzle size increases
Solution Approach 1:
Multiple connection functions are merged into a single eccentric connection portion. This single connection point integrates attachment, sealing, and structural support functions, securing the nozzle head while minimizing the overall nozzle size by eliminating the need for multiple separate connection components
Data Source
Figure 1
Figure 2
Figure 3A~3C
AI summary
A private part washing nozzle (1) includes a nozzle head (10) including a plurality of types of spray ports (11, 12) each spraying washing water, a head support body (20) including a plurality of flow passages (201, 202) delivering the washing water to the respective plurality of types of spray ports, the head support body including a connection portion (21) formed at a distal end side of the head support body, the connection portion being connected to the nozzle head, and the connection portion being provided at a position in such a manner that a central axis (L2) of the connection portion is eccentric relative to a central axis (L1) of the nozzle head.