Nozzle Mounting Structure Using Curved Surfaces for Precision-Free Sealing
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Solution Overview
Problem
Conventional two-component mixing containers require high processing and assembly precision for nozzle mounting, which can lead to leakage issues and complex design requirements to prevent undesired nozzle rotation.
Innovation Solution
A nozzle mounting structure that uses a body with a curved convex surface and a support system of shaft portions to allow the nozzle to rotate between positions without the need for high precision, ensuring liquid-tight sealing and easy assembly, featuring a pair of shaft portions that press the curved convex surface against a curved concave surface on the housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a spherical nozzle base is fitted in a spherical fitting opening, then the nozzle can be securely mounted, but high processing precision and assembly precision are required which increases manufacturing complexity and cost
Solution Approach 1:
The patent applies curvature by replacing the spherical fitting opening with a curved concave surface that matches the curved convex surface on the nozzle body. This curved interface allows the nozzle to rotate smoothly between first and second positions while maintaining reliable sealing, eliminating the need for high-precision spherical machining.
Solution Approach 2:
The patent changes the geometric parameters of the fitting interface from a spherical shape to a curved concave-convex surface combination. This parameter change reduces the precision requirements while maintaining the functional requirements for secure mounting and rotation capability.
2Reliability
If a spherical nozzle base is used, then the nozzle can be mounted securely, but complex design is required to prevent undesired nozzle rotation
Solution Approach 1:
The patent makes the nozzle mounting dynamic by allowing the nozzle body to rotate between first and second positions through the curved convex-concave surface interface. This dynamic design simplifies the structure compared to fixed spherical fittings while preventing undesired rotation through the guided rotation mechanism.
Solution Approach 2:
The curved concave surface on the housing and curved convex surface on the nozzle body work together to guide the nozzle rotation smoothly between predetermined positions, eliminating the need for complex anti-rotation mechanisms that would be required with spherical fittings.
3Reliability
If high assembly precision is required for nozzle mounting, then reliable sealing can be achieved, but assembly time increases and productivity decreases
Solution Approach 1:
The curved concave-convex surface interface enables the nozzle to be assembled by simple insertion and rotation rather than requiring high-precision alignment. The curved surfaces guide the assembly process and ensure proper positioning, significantly reducing assembly time while maintaining sealing reliability.
Solution Approach 2:
The curved surface design allows the nozzle to self-align and self-position during assembly. The curved convex surface on the nozzle automatically engages with the curved concave surface on the housing, guiding the assembly process without requiring external alignment tools or high-precision machining.
Data Source
AI summary
Provided is a nozzle mounting structure of a component container by which a nozzle configured to rotate between a first position and a second position may be mounted to a housing without the need for a high processing precision and a high assembly precision. A pair of shaft portions support a body with the nozzle unitarily formed therewith. The nozzle rotates between the first position and the second position. A curved convex surface provided on the body is pressed against a curved concave surface provided on a first bottom wall portion of a housing by a pressing force imparted from a support portion.