Bag Sealing Clip With Adjustable Frame for Thick Openings
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Solution Overview
Problem
Conventional bag sealing tools are cumbersome to use and difficult to apply to bags with large sizes or thick thicknesses, often requiring folding and having gaps that hinder effective sealing.
Innovation Solution
A clip with a base and a movable frame, featuring elastic members and a handle, allowing for simple operation to seal bag openings by adjusting the frame's position between lowest, intermediate, and highest heights, accommodating various bag sizes and ensuring a gap-free seal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional sealing tool with a predetermined gap is used, then the device structure is simple, but it is difficult to insert into bags with relatively thick thickness
Solution Approach 1:
The patent employs a movable frame that can dynamically adjust its position relative to the base through elastic members. The frame transitions between retracted and extended positions, allowing the sealing device to adapt to bags of varying thicknesses. This dynamic mechanism enables the tool to accommodate thick bags while maintaining a manageable device structure through controlled movement rather than fixed rigid components.
Solution Approach 2:
The movable frame is designed to be nested within or adjacent to the base structure when in the retracted position. The elastic members are positioned within the handle part's inner accommodation space. This nesting arrangement minimizes the device's overall footprint when not in use, making it compact and easy to store while still providing the capability to extend for thick bag sealing.
2Ease of operation
If the opening of the bag is folded once for sealing, then the sealing process is completed, but the operation becomes cumbersome
Solution Approach 1:
The clip is pre-configured with the movable frame and elastic members positioned to automatically engage with the bag opening. When applied, the elastic members provide immediate clamping force without requiring manual folding or complex manipulation. The device is ready to seal upon contact, eliminating preliminary folding steps and reducing the time and effort required for sealing operations.
Solution Approach 2:
The elastic members automatically generate clamping force when the movable frame is positioned against the bag opening. The device self-regulates the sealing pressure through the elastic properties of the members, eliminating the need for user adjustment or complex operation sequences. This self-service mechanism simplifies the sealing process to a single intuitive action while maintaining consistent sealing quality.
3Ease of operation
If the movable frame is allowed to move freely, then the range of motion is large, but the position cannot be maintained stably
Solution Approach 1:
The elastic members provide continuous mechanical feedback to the movable frame through their elastic deformation. As the frame moves, the elastic members deform and generate restoring forces that naturally guide the frame back toward its equilibrium position. This feedback mechanism enables the frame to be easily adjusted to different positions while automatically maintaining stability through the elastic restoring forces, without requiring additional locking mechanisms.
Solution Approach 2:
The elastic modulus and pre-tension of the elastic members are carefully selected to provide optimal balance between adjustability and stability. The elastic parameters are designed so that the members provide sufficient flexibility for easy frame movement while simultaneously generating adequate restoring forces to maintain stable positioning. This parameter optimization allows the frame to be adjusted freely yet remain stable at any positioned state.
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 clip provides a simple and effective way to seal bag openings, suitable for bags of varying sizes and thicknesses, preventing content leakage and contamination while maintaining a secure closure.
Implementation Method 1
a movable frame disposed above the base comprising a handle part extending in the longitudinal direction and an elastic member disposed at each of both ends of the handle part
Data Source
Figure 1~3a
Figure 3b~3d
Figure 3e~5a
AI summary
A clip used to seal an opening of a bag according to an embodiment of the present invention includes a base extending lengthily in a longitudinal direction and provided with a coupling pin at each of both ends thereof, and a movable frame including a handle part disposed above the base to extend in the longitudinal direction and an elastic member disposed at each of both ends of the handle part and having one end coupled to the coupling pin and the other end restricted by the handle part, wherein the handle part further includes an inner accommodation part lengthily extending along the longitudinal direction, and the elastic member is slidable along the inner accommodation part, wherein the elastic member is inserted only up to a predetermined position within the inner accommodation part and is withdrawn only up to a predetermined position outside the inner accommodation part, and the movable frame is elastically deformed by external force to move closer or further away from the base, wherein a position of the movable frame is maintained at the lowest height closest to the base, the highest height that is maximally spaced apart from the base, and an intermediate height between the lowest height and the highest height.