Fluid Dispenser Pump Assembly for Precise Collar Alignment
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Solution Overview
Problem
Existing fluid substance dispensing containers, particularly those with glass parts, suffer from high assembly and visual defect-related rejects, leading to increased waste and production costs due to misalignment and aesthetic issues.
Innovation Solution
A dispensing device with a screwing limit mechanism using a counter-thread and snap-fit alignment, combined with deformable elements and torsional alignment means, ensures precise alignment and minimizes assembly defects, reducing waste and enhancing aesthetics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If manual pumps with glass parts are used in dispensing containers, then aesthetic appearance and functionality are improved, but assembly defects and visual misalignments increase leading to high reject rates
Solution Approach 1:
The patent implements preliminary alignment actions through pre-formed alignment elements (protrusions and recesses) that are integrated into the container and pump components before assembly. These alignment features pre-establish the correct relative positioning of glass and plastic parts, eliminating misalignment issues during final assembly and reducing reject rates due to aesthetic defects
2Manufacturing precision
If complex alignment mechanisms are added to prevent misalignment, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The patent merges multiple functions into integrated components: alignment protrusions and recesses are combined with sealing elements and structural features into unified components. This integration achieves precise alignment without adding separate complex alignment mechanisms, thereby maintaining manufacturing precision while avoiding increased device complexity
Solution Approach 2:
The alignment features are designed to automatically guide and position components during assembly without requiring external alignment tools or complex adjustment mechanisms. The protrusions and recesses self-align the glass container with the plastic pump components, achieving precise positioning through the components' own geometric features rather than external alignment systems
Data Source
AI summary
A device for dispensing a fluid substance includes an external container with a collar fixed to an intermediate element, and first torsional alignment means between the intermediate element and the collar, the intermediate element featuring an opening cooperating with a flange of a pump for fixing the pump to the collar, the pump featuring a stem coupled in a sealed manner to a dispensing button rotatably coupled to the intermediate element for moving between a first locking position, in which at least one stop on the button abuts a surface of the intermediate element to prevent axial translation of the button, and a dispensing position which permits an axial movement of the button, and a ring nut for moving the button torsionally coupled to the button, the ring nut concealing at least part of a lateral surface of the the button and the intermediate element.