Oval Dispenser Platform for Stick Material Adhesion
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Solution Overview
Problem
Existing stick dispensers face challenges with material adherence, retention, and resource efficiency, particularly in bottom-fill designs, where stick compositions do not adhere strongly to plain platforms, leading to material loss and increased resource usage.
Innovation Solution
A skeletal platform with an oval rim and concentric walls, featuring intersecting arcuate spokes and a filling ring, reduces material retention while maintaining adhesion and minimizing weight, incorporating a cam/stop system for smooth filling and reduced dead space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a plain platform surface is used in bottom-fill dispensers, then the structure is simple and manufacturing is easy, but the stick composition does not adhere strongly leading to material loss
Solution Approach 1:
The platform surface is segmented into multiple functional zones: a central dome portion for primary adhesion, surrounded by a flange with radial grooves for enhanced mechanical interlocking. This segmentation allows different regions to provide complementary adhesion mechanisms, significantly improving stick composition retention while maintaining manufacturing feasibility through conventional molding techniques.
Solution Approach 2:
The platform incorporates localized structural features including radial grooves in the flange region and a domed central area, creating zones of enhanced adhesion where needed. The radial grooves provide mechanical interlocking in the flange area, while the dome provides broad surface contact in the center, optimizing adhesion locally rather than uniformly across the entire platform.
2Reliability
If a skeletal platform with enhanced adhesion features is used, then material adherence improves, but the platform depth increases requiring a longer barrel
Solution Approach 1:
Instead of increasing overall platform depth, the design implements adhesion-enhancing features partially: radial grooves are confined to the flange region rather than extending through the entire platform depth, and the dome portion provides sufficient adhesion without requiring excessive depth. This partial implementation achieves reliable adhesion while controlling the overall platform depth and barrel length.
Solution Approach 2:
The design transitions from relying solely on vertical depth for adhesion to utilizing horizontal dimensional features: radial grooves in the flange create mechanical interlocking in the radial direction, and the dome provides broad surface area contact in the horizontal plane. This dimensional shift allows enhanced adhesion without increasing platform depth.
3Ease of manufacture
If top-fill dispensers are used, then filling control is easier, but spillage risk increases and subsequent processing is needed to achieve smooth appearance
Solution Approach 1:
The invention inverts the conventional filling approach by implementing bottom-fill dispensing instead of top-fill. The platform design with its domed central portion and flanged rim with radial grooves compensates for the increased filling control difficulty by providing enhanced adhesion that prevents spillage and ensures smooth surface formation during bottom-up filling operations.
Data Source
Figure 1~2
Figure 3~4B
Figure 4~5
AI summary
An oval dispenser for stick material suitable for being filled through its base comprises a skeletal platform (30) having a threaded hub (32), a rim wall (31), a circular wall intermediate between the hub and the rim defining a filling zone, and a rotor wheel (3) having a hollow boss (13) that defines with the filling ring (34) a continuous passage for stick material to be charged into the dispenser interior.