Dispensing Pump Hoop Axial Splines Sleeve Mounting
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Solution Overview
Problem
The reliability of fastening a dispensing pump on a bottle is compromised due to mechanical stresses and aesthetics issues caused by the mounting of a hoop with elongated ribs on a smooth sleeve, leading to potential deformation and altered aesthetics.
Innovation Solution
A device featuring a sleeve with axial splines and a hoop with internal axial ribs that slide into the splines for mounting, eliminating the need for inlaying and reducing mechanical stresses, ensuring secure and aesthetic fastening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a hoop with elongated ribs is mounted by axial sliding on a smooth sleeve, then the aesthetics of the bottle is improved, but the reliability of the fastening is compromised due to plastic deformation of the sleeve
Solution Approach 1:
Instead of mounting the hoop on a smooth sleeve (conventional approach), the invention inverts the geometry: the sleeve is provided with axial splines (protrusions) and the hoop has corresponding axial ribs (grooves) that engage with the splines. This inversion eliminates the need for plastic deformation and inlaying, allowing the hoop to be mounted without compromising the sleeve's structural integrity or the fastening reliability.
Solution Approach 2:
The invention segments the contact interface between the hoop and sleeve by introducing axial splines and corresponding ribs. Rather than a continuous smooth surface requiring uniform deformation, the interface is divided into discrete engagement points (splines and ribs), which distribute stresses and eliminate the need for plastic deformation while maintaining aesthetic appearance.
2Reliability
If a force sufficient to realise inlaying is applied during mounting of the hoop, then the hoop is securely mounted, but the aesthetics of the hoop is altered due to mechanical stress
Solution Approach 1:
The invention inverts the mounting mechanism: instead of forcing ribs into a smooth sleeve (which requires high inlaying forces), the sleeve has protruding splines that engage with corresponding grooves in the hoop. This allows secure mounting through positive mechanical engagement without requiring excessive mounting forces that would deform or damage the hoop's aesthetic appearance.
3Ease of manufacture
If a sleeve with smooth peripheral seating is used, then the mounting process is simple, but the fastening reliability decreases due to plastic deformation being passed on to the means of fastening
Solution Approach 1:
The invention segments the peripheral seating surface into axial splines (protrusions) rather than using a smooth continuous surface. This segmentation allows the hoop to engage through discrete ribs that fit into the splines, eliminating the need for plastic deformation while maintaining a simple mounting process. The segmented interface provides reliable fastening without compromising the integrity of the fastening means.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enhances the reliability of the pump's fastening by minimizing deformation and mechanical stress, while maintaining aesthetics through axial clamping and friction retention, ensuring a secure and visually appealing assembly.
Implementation Method 1
the internal wall of the hoop having axial ribs which are arranged in order to be positioned in said splines during the mounting of said hoop around said seating
Data Source
AI summary
A device for fastening a dispensing pump on a bottle containing a product, a sleeve fastening the pump and fastening on the bottle, a dressing hoop intended to be mounted by axial sliding around a peripheral seating of the sleeve, the peripheral seating having axial splines and the internal wall of the hoop having axial ribs which are arranged to be placed in the splines during the mounting of the hoop around the seating.