Cosmetic Container Lever Opening Mechanism
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Solution Overview
Problem
Conventional cosmetic containers face difficulties in ensuring air tightness while facilitating the opening of the cover, particularly when the elastic sealing body is in a reduced pressure state and the lever is used to release the engagement between the engagement member and the hook piece.
Innovation Solution
A cosmetic container design featuring a hinge, container main body-side and cover-side close-contact portions made of an elastic body, and a turning portion with an engagement part and an opening-operation auxiliary portion, allowing for easy engagement and disengagement of the cover while ensuring air tightness and facilitating opening with a lever mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the elastic body for sealing is used to ensure air tightness by close contact with the cosmetic dish, then air tightness is improved, but the cover becomes difficult to open due to negative pressure and strong adhesion
Solution Approach 1:
The opening operation is divided into two distinct phases: first releasing the engagement between engagement member and hook piece using the lever, then peeling the cover using the auxiliary opening portion. This segmentation allows the user to overcome the strong adhesion gradually rather than attempting to open the cover in one motion.
Solution Approach 2:
The auxiliary opening portion acts as an intermediary element between the user's finger and the cover body. By providing a dedicated peeling portion that extends from the front surface, it mediates the force application needed to break the negative pressure seal without requiring direct manipulation of the entire cover.
2Ease of operation
If the lever mechanism is used to release engagement between engagement member and hook piece, then ease of operation is improved, but the cover still cannot be opened due to maintaining adhesion
Solution Approach 1:
The lever mechanism performs a preliminary action by releasing the engagement between the engagement member and hook piece before the actual opening operation. This preliminary disengagement prepares the system for the subsequent peeling action by removing the mechanical lock while maintaining the sealing adhesion until opening is initiated.
Solution Approach 2:
The opening process is segmented into two independent operations: engagement release via lever, and cover peeling via auxiliary opening portion. This segmentation allows each function to be optimized independently - the lever for easy engagement release and the auxiliary portion for breaking adhesion.
3Reliability
If the close-contact portions are made with elastic body for sealing, then air tightness is ensured, but contact pressure variations reduce adhesion between portions
Solution Approach 1:
The close-contact portions are designed with localized elastic body sealing elements that maintain consistent contact pressure across the sealing interface. The elastic material distributes the closing force evenly, compensating for variations in contact pressure and maintaining stable adhesion throughout the sealing region.
Solution Approach 2:
The close-contact portions combine rigid structural elements with elastic sealing materials to create a composite sealing system. The rigid portions provide structural support and positioning, while the elastic body ensures consistent contact and adhesion despite pressure variations, maintaining both air tightness and bonding stability.
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
The design ensures air tightness when the cover is closed and allows for effortless opening by utilizing a lever principle to press the cover upward, maintaining adhesion between close-contact portions regardless of contact pressure variations, thus enhancing usability and airtightness.
Implementation Method 1
At least one of the container main body-side close-contact portion and the cover-side close-contact portion is made of an elastic body
Implementation Method 2
The turning-portion opening-operation auxiliary portion abuts on an opening-operation auxiliary portion disposed at the other of the container main body or the cover so as to press up the cover using a principle of a lever
Data Source
AI summary
When a turning portion on the front end side of the cover is turned in one direction, a turning-portion engagement part disposed in the turning portion engages with a container main body-side engagement part so as to close the cover. When the turning portion of the cover is turned in the opposite direction, engagement between the turning-portion engagement part and the container main body-side engagement part is released. When the turning portion is kept turned in the opposite direction, a turning-portion opening-operation auxiliary portion disposed in the turning portion abuts on a container main body-side opening-operation auxiliary portion and the cover can be pressed up with a weak force by the principle of the lever.