Oral Cleaning Nozzle Housing With Split Molded Flow Path
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Solution Overview
Problem
Existing nozzles for oral cavity cleaning devices have complex flow path shapes that are difficult to manufacture efficiently.
Innovation Solution
A nozzle design comprising a first and second molded member with a joint surface along the flow path axis, allowing for a complicated flow path shape to be easily manufactured, and a grip part for attachment and detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a nozzle housing with a complicated flow path shape is designed, then the cleaning performance is improved, but the manufacturing difficulty increases
Solution Approach 1:
The nozzle housing is divided into multiple molded members (first molded member, second molded member, third molded member) that are joined together. Each molded member contains a portion of the complicated flow path, allowing the complex shape to be manufactured through modular injection molding processes rather than attempting to form the entire complex geometry in a single mold.
Solution Approach 2:
Multiple molded members are joined together to form the complete nozzle housing with the complicated flow path. The joint surfaces between molded members are designed to extend along the flow path axis, creating a seamless connection that maintains the complex flow path geometry while enabling easier manufacturing through separate molding operations.
2Manufacturing precision
If a complicated flow path shape is manufactured as a single piece, then manufacturing precision is improved, but productivity decreases
Solution Approach 1:
The single-piece manufacturing approach is segmented into multiple molded members that can be produced independently through parallel injection molding operations. This increases productivity while maintaining precision through careful design of joint surfaces that extend along the flow path axis, ensuring accurate alignment and seamless flow path construction.
Solution Approach 2:
The joint surfaces between molded members are designed to extend along the flow path axis (longitudinal dimension) rather than requiring complex three-dimensional joining. This dimensional approach simplifies the joining process and maintains flow path precision while enabling more efficient manufacturing workflows.
Data Source
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AI summary
The present disclosure provides a nozzle for an oral cavity cleaning device including a nozzle housing having a complicated flow path shape, the nozzle housing having the complicated flow path shape having been manufactured more easily. The nozzle according to the present disclosure includes a nozzle housing (40) in which a flow path (P1) having an inflow port and a discharge port is formed. The nozzle housing (40) includes a first molded member (5) including a first recessed part which constitutes a part of the flow path (P1); and a second molded member (6) including a second recessed part which constitutes a part of the flow path (P1). The second molded member (6) is joined to the first molded member (5). A joint surface (81) between the first molded member (5) and the second molded member (6) extends along a flow path axis (C1) of the flow path (P1).