Screw Shaft Piston Container with Reduced Draft Angle
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Multi-component packages for consumer products, such as antiperspirant and deodorant, face issues with moveable parts becoming dislodged due to stress from the composition's resistance and manufacturing constraints, leading to inoperability during dispensing.
Innovation Solution
A package design featuring a product chamber connected to an outer sleeve via tongue and groove and latch mechanisms, with a reduced draft angle on the product chamber's inner wall, ensuring a positive connection and minimizing separation of components during use, along with a dispensing mechanism that includes an actuator and platform for easy composition dispensing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a typical twist up package uses conventional product chamber geometry with standard draft angles, then manufacturing is easier, but the composition's resistance causes significant stress on moveable parts leading to component dislodgement and package inoperability
Solution Approach 1:
The patent applies asymmetry by implementing a reduced draft angle (less than 10 degrees) on the product chamber inner wall, deviating from conventional larger draft angles. This asymmetric geometric modification creates a more secure connection between the product chamber and outer sleeve, preventing component dislodgement while maintaining manufacturing feasibility through the specific angular configuration
2Reliability
If the product chamber has a reduced draft angle to minimize component separation, then component connection stability improves, but manufacturing precision requirements increase
Solution Approach 1:
The patent applies parameter changes by specifically reducing the draft angle parameter to less than 10 degrees, which is a significant deviation from conventional larger draft angles. This parameter modification optimizes the connection stability while the patent addresses manufacturing precision through complementary features such as the latch mechanism and tongue-groove interface that compensate for the tighter angular tolerance requirements
3Reliability
If conventional package structures are used, then device simplicity is maintained, but high viscosity compositions cause moveable parts to become dislodged during dispensing
Solution Approach 1:
The patent applies preliminary action by implementing the reduced draft angle geometry and secure connection features (latch mechanism, tongue-groove interface) before the dispensing process begins. These pre-configured structural elements are designed to preemptively counteract the high reaction forces that will occur during dispensing of high viscosity compositions, preventing component dislodgement before it can occur
Solution Approach 2:
The patent applies curvature principles through the specific angular configuration of the product chamber inner wall (reduced draft angle less than 10 degrees). This curved geometric approach creates a more gradual transition and secure connection interface compared to conventional sharper angles, reducing stress concentration and preventing component dislodgement during high-force dispensing operations
Data Source
Figure 1~2
Figure 3
AI summary
A package including a product chamber (20) to which a consumer product composition is in contact, and a substantially non-moveable outer sleeve (30) surrounding at least a portion of the product chamber. The outer sleeve has a body portion (32) and a separate and distinct base portion (34). At least one of the body portion and the base portion is permanently connected to the product chamber.