Stop-Surface Rotary Nozzle for Stable, Leak-Free Dispensing
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Solution Overview
Problem
Existing dispensing devices for fluids or liquids face issues such as nozzle instability, leakage, and complex assembly, with the nozzle being prone to damage and difficult to completely empty, especially when switching between dispensing and non-dispensing positions.
Innovation Solution
The dispensing device features a switching nozzle that can be rotated between dispensing and non-dispensing positions, with strategically shaped stop surfaces and constraining portions to ensure stable positioning and secure engagement, minimizing the risk of accidental detachment and leakage, while allowing for easy switching and assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the dispensing nozzle is rigidly fixed to the operating means, then the structure is simple, but the nozzle projects and complicates packaging and handling operations
Solution Approach 1:
The dispensing nozzle is made rotatable relative to the operating means, allowing it to switch between a projecting dispensing position and a retracted non-dispensing position. This dynamic configuration resolves the contradiction by enabling simple rigid connection while eliminating packaging and handling complications through positional adjustment.
Solution Approach 2:
The nozzle is designed to rotate around an axis perpendicular to the drawing pipe axis, moving from a position where it projects outward to a position where it aligns with the drawing pipe. This dimensional transformation allows the nozzle to occupy minimal space during non-use while maintaining full functionality during dispensing.
2Ease of operation
If the dispensing nozzle is made switchable between positions, then packaging and handling are improved, but the nozzle becomes unstable and may accidentally switch positions
Solution Approach 1:
Stop surfaces are provided on both the operating means and the dispensing nozzle to prevent accidental switching between positions. These stop surfaces create mechanical limits that counteract unintended movement, ensuring the nozzle remains stable in both dispensing and non-dispensing positions while still allowing intentional switching.
Solution Approach 2:
The stop surfaces act as intermediary elements between the nozzle and operating means, mediating the rotational movement. They provide controlled engagement points that guide the nozzle into stable positions and prevent over-rotation or accidental switching, thereby enhancing reliability without compromising the switching capability.
3Volume of moving object
If the dispensing nozzle is made switchable, then space occupation is reduced, but tightness and leakage prevention become difficult
Solution Approach 1:
A sealing element is introduced as an intermediary component between the dispensing nozzle and the operating means. This sealing element maintains tightness during rotation and in both positions, preventing leakage while allowing the nozzle to switch between projecting and retracted configurations, thus resolving the contradiction between space reduction and tightness maintenance.
4Volume of moving object
If the nozzle is retracted parallel to the drawing pipe, then space is minimized, but the nozzle may not be completely emptied causing leakage
Solution Approach 1:
The nozzle is designed to rotate around an axis perpendicular to the drawing pipe axis, rather than simply retracting parallel to it. This rotational movement in a different dimension allows the nozzle to be completely emptied by gravity during the switching process, ensuring no fluid remains in the nozzle when retracted, thereby preventing leakage while minimizing space occupation.
Data Source
AI summary
The present invention concerns a dispensing device (100) for dispensing a liquid or fluid held in a container (C). The device (100) comprises: an engagement portion (101) for mutually engaging the device (100) and the container; drawing and dispensing means (102) suited to draw the fluid or liquid from the container (C) and then dispense it; a hollow operating cap (103) for operating the drawing and dispensing means (102); a dispensing nozzle or spout (104) provided with a dispensing duct (105) fixed to the operating cap (103). The dispensing nozzle or spout (104) can be switched through a rotary movement between a first dispensing position and a second non-dispensing position. The operating cap (103) and the dispensing nozzle or spout (104) are shaped in such a way as to respectively define a first stop surface (107) and a second stop surface (108); in the dispensing position the first and the second stop surfaces (107, 108) are arranged against each other.