Container Sealing Device with Reverse Thread for Clear Opening
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Solution Overview
Problem
Existing container sealing devices lack a clear opening feeling when opening the cap, particularly due to insufficient movement difference between the separation part and the upper closure, especially with forward threads, which can lead to difficulty in separation and a less distinct snap-opening sensation.
Innovation Solution
A container sealing device with an inner plug and upper closure featuring a first screwing part for attachment and detachment, a second screwing part in reverse thread relation for locking the separation part, and stoppers to regulate the assembling interval, allowing for a clear opening feeling by facilitating rapid and reliable separation of the separation part from the inner plug while maintaining a locked state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a forward thread is used for the screwing part between the upper closure and inner plug, then the upper closure can be easily opened by rotating, but the separation part is not reliably separated from the inner plug and no clear opening feeling is generated
Solution Approach 1:
The patent applies reverse thread to the screwing part between the upper closure and inner plug. When the upper closure is rotated to open, the reverse thread generates a movement difference that causes the separation part to separate from the inner plug, producing a clear snap-opening feeling. This inversion of the conventional forward thread approach resolves the contradiction by making both opening ease and separation reliability achievable through the same rotational action.
2Ease of operation
If a reverse thread is used for the screwing part, then a snap-opening feeling is generated, but the movement difference between separation part and upper closure is insufficient for reliable separation
Solution Approach 1:
The patent divides the plug into two functional segments: the separation part that can be detached and the inner plug body that remains in the container. The screwing part is specifically designed to connect these segments, and when rotated, the reverse thread mechanism creates relative movement between them. This segmentation allows the separation part to be reliably detached while maintaining the snap-opening feeling.
Solution Approach 2:
The patent introduces a dynamic mechanism where the screwing part with reverse thread creates a movement difference between the separation part and the inner plug during rotation. This dynamic interaction transforms the rotational motion into linear separation motion, ensuring reliable detachment while maintaining the snap-opening sensation through controlled movement.
3Reliability
If the separation part is fixed to the upper closure by a screwing structure, then reliable holding after separation is achieved, but the molding process becomes complex requiring undercut parts in the die
Solution Approach 1:
Instead of using conventional forward thread for fixing the separation part to the upper closure, the patent employs reverse thread. This inversion allows the separation part to be reliably held during assembly while enabling easy detachment during opening. The reverse thread structure can be molded without requiring complex undercut features in the die, simplifying the manufacturing process.
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 solution provides a clear opening feeling with a snap sound or sudden resistance reduction during opening, ensuring the separation part is securely held after separation, and simplifies the molding process by eliminating the need for undercut parts in the die.
Implementation Method 1
the second screwing part is in a reverse thread relation with respect to the first screwing part
Data Source
AI summary
An object is to provide a container sealing device which can perform an opening of an inner plug with a clear opening feeling. An inner plug 10 is assembled in advance to an upper closure 20 by using a second screwing part 52. At this time, since an assembling interval between a separation part 12 and the upper closure 20 can be adjusted by tip end parts 16t and 20u of a cylindrical part 16 which are first stoppers and the small-diameter cylinder part 20d, the second screwing part 52 can be brought into a lock state of being screwed to the deepest position or a state close to that. In opening the plug, the first screwing part 51 is loosened the second screwing part 52 is tightened, and the separation part 12 can be rapidly and reliably separated from a body part 10b of the inner plug 10.