Washer Nozzle Concave-Convex Fitting for Sealing Integrity
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Solution Overview
Problem
Conventional washer nozzles with high-pressure washer fluid experience gaps between joined nozzle members, leading to reduced sealing performance and irregular spreading of the fluid, affecting the efficiency of the washing process.
Innovation Solution
A washer nozzle design featuring a first nozzle body with a fitting recess and a second nozzle body fitted within, along with a continuous sealing portion formed along the periphery, enhancing the joining strength and sealing performance by preventing deformation under fluid pressure and maintaining consistent spreading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If two nozzle members are joined together by welding on their planes, then the nozzle can be assembled, but the joining strength is insufficient under high washer fluid pressure causing gaps to form
Solution Approach 1:
The nozzle is divided into multiple members (first nozzle body and second nozzle body) that are joined together. The segmentation allows for modular assembly while maintaining structural integrity through the fitting recess and protrusion design that distributes stress across the joint interface.
Solution Approach 2:
The second nozzle body is fitted inside the first nozzle body through a fitting recess and protrusion interface. This nested configuration allows the members to be joined in a space-efficient manner while maintaining adequate joining strength to withstand high washer fluid pressure without forming gaps.
2Ease of manufacture
If the nozzle members are welded together, then assembly is achieved, but deformation occurs under high pressure affecting the spreading area
Solution Approach 1:
The fitting recess and protrusion are pre-formed during the molding process of the nozzle bodies. This preliminary action ensures that the joining structure is built-in from the start, allowing for easy assembly while maintaining the correct shape and preventing deformation under pressure that would affect the spreading area.
3Reliability
If the nozzle members are joined with sufficient strength, then sealing performance improves, but the manufacturing complexity increases
Solution Approach 1:
The fitting recess and protrusion features are integrated directly into the nozzle body structures during molding, rather than being added as separate components. This merging of functions achieves sufficient joining strength and sealing performance while avoiding increased manufacturing complexity that would result from additional parts or assembly steps.
Data Source
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AI summary
A washer nozzle includes: a first nozzle body (40) provided with a fitting recess (FC) having a bottom portion (41a) and a side wall (41b); a second nozzle body (50) having a close close-contact wall (51) in close contact with the side wall (41b) and fitted in the fitting recess (FC); channels (MS, SS) provided between the bottom portion (41a) and a contact plane (52) and allowing washer liquid to flow therethrough; and a sealing portion provided between the edge portion (44) of the first nozzle body (40) and the spherical surface (53) of the second nozzle body (50) and sealing between the first nozzle body (40) and the second nozzle body (50). In this manner, the nozzle bodies (40,50) can be fitted to each other in a concave-convex fitting while the side wall (41b) and the close-contact wall (51) are in a close contact with each other, that is, the side wall (41b) and the close-contact wall (51) can be fitted to each other in a concave-convex fitting with an insertion margin provided therebetween, and as a result, the joint strength between the nozzle bodies (40, 50) can be increased to improve the sealing properties. Therefore, a variation in the spread range of the washer liquid can be reduced.