Segmented Pushbutton Nozzle for Crossing Fluid Paths
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Solution Overview
Problem
Manufacturing nozzles for dispensing systems with intersecting fluid pathways is difficult due to the need for injection molds with intersecting pins, especially in systems with three or more tanks, leading to alignment and space constraints.
Innovation Solution
A pushbutton system with a nozzle directly connected to a facing tank, bypassing the body, allowing fluid pathways to intersect within the nozzle, and using separate or overmolded nozzle and body parts to ensure sealing and alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the nozzle is manufactured in a single part with intersecting fluid pathways, then the structure is integrated and compact, but the manufacturing becomes very difficult due to intersecting injection mold pins
Solution Approach 1:
The nozzle is divided into multiple separate parts (first nozzle part and second nozzle part) that are assembled together. This segmentation allows each part to be manufactured independently using standard injection molding processes, avoiding the manufacturing difficulties of single-part nozzles with intersecting fluid pathways while still achieving the desired integrated structure through assembly.
2Adaptability or versatility
If the tanks are arranged in a triangle with one facing tank vertically aligned, then the outlet orifices can be arranged in a triangle pattern, but the fluid pathways must intersect making manufacturing difficult
Solution Approach 1:
The nozzle is segmented into multiple parts with dedicated fluid pathways for each tank. The first nozzle part receives fluid from the facing tank through a first fluid pathway, while the second nozzle part receives fluid from rear tanks through a second fluid pathway. This segmentation allows the triangular arrangement of tanks and orifices without requiring complex intersecting pathways in a single part.
Solution Approach 2:
The fluid pathways are arranged in different spatial dimensions and orientations. The first fluid pathway is positioned differently from the second fluid pathway, allowing them to coexist without intersection. This dimensional separation enables the triangular configuration of tanks and orifices while avoiding manufacturing complexity.
3Volume of moving object
If the space between lower orifices is smaller than the upper orifice diameter, then the triangular arrangement is compact, but the injection mold pins would intersect
Solution Approach 1:
The nozzle is divided into multiple parts that are assembled together, eliminating the need for a single large injection mold that would require intersecting pins. Each part can be manufactured with standard mold sizes and pin configurations, while the final assembled nozzle achieves the compact triangular orifice arrangement.
Data Source
AI summary
The invention proposes a pushbutton for a system for dispensing several pressurized products, the pushbutton including: a body; a spraying nozzle secured to the body, the body and the nozzle forming a subassembly, the nozzle being provided with several outlet orifices, each outlet orifice being linked to a product. The pushbutton includes a first channel passing through the body and the nozzle and forming a passage for a first product arriving in a first well of the body and emerging through a first outlet orifice of the nozzle. It also includes a second channel passing through the nozzle only and forming a passage for a second product arriving in a well of the nozzle and emerging through a second outlet orifice of the nozzle overhanging the first outlet orifice.