Cartridge Extrusion Container with Elastic Screw Locking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing cartridge-type content extrusion containers require two-handed operation for extruding liquid cosmetic materials, which limits usability and convenience.
Innovation Solution
A cartridge-type content extrusion container design featuring a screw tube with an elastic portion, a moving body with a male screw, a rotating member, and a knock member that allows single-handed operation by engaging teeth to rotate the moving body and extrude content through a piston, enhancing usability and allowing content extrusion by knocking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If the cartridge unit is detachably attached to the main body tube to reduce discarded components, then environmental friendliness is improved, but the screwing and unscrewing operation becomes complex requiring two hands
Solution Approach 1:
The screw tube's elastic portion automatically expands when the cartridge unit is removed, causing the female screw to disengage from the male screw without manual intervention. This self-service mechanism simplifies the detachment operation to a single-handed action while maintaining the environmental benefit of reusable main body tubes
Solution Approach 2:
The screw tube incorporates an elastic portion that dynamically changes its radial dimension based on the presence or absence of the cartridge unit. When the cartridge is present, the elastic portion is compressed to maintain screw engagement; when removed, it expands to release the screw, enabling automatic adaptation to operational states
2Ease of operation
If a rotating member with teeth is added to enable single-handed operation, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The rotating member serves multiple functions: it acts as a knock actuator to push the piston, functions as a ratchet mechanism through engaged teeth to control rotation direction, and provides a gripping surface for single-handed operation. This multi-functionality reduces the need for separate components while achieving single-handed operation capability
Solution Approach 2:
The patent combines the knock actuator, ratchet mechanism, and operation grip into a single rotating member. The teeth on the rotating member engage with teeth on the piston, merging the rotational motion control and linear push function into one integrated component, thereby reducing overall device complexity despite adding single-handed operation capability
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
Enables efficient and convenient single-handed operation for extruding content, reducing the number of discarded components and improving usability by allowing content extrusion through a piston that suppresses liquid leakage.
Implementation Method 1
having an elastic portion elastically deformed in a radial direction of the main body tube
Implementation Method 2
a moving body having a male screw on an outer circumference, a female screw member having a female screw screwed with the male screw
Data Source
AI summary
A cartridge-type content extrusion container includes a cartridge containing a material and forming an opening, a main body tube to removably accommodate the cartridge, a screw tube inside the main body tube, a moving body that is screwed into the screw tube to move in an axial direction of the main body tube via a rotation of the moving body relative to the screw tube, so as to urge the material toward the opening of the cartridge, and a screw locking member. The screw tube has an elastic portion that is accommodated in the screw locking member. The screw locking member is movable away from the screw tube when the cartridge is removed from the main body tube to cause the elastic portion to expand in the radial direction so as to release a screw coupling between the screw tube and the moving body.