Cap Unit Lid Packing Design for Easy Attachment and Detachment
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Solution Overview
Problem
Conventional cap units face difficulties in easily attaching and detaching the lid packing from the lid, making it hard to maintain hygiene and usability.
Innovation Solution
A cap unit design featuring a lid packing with a protrusion that can be pinched and attached to the lid, allowing for easy attachment and detachment, along with a rotatable lid and elastic flange for secure sealing, facilitating easy handling and cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the lid packing is attached by fitting from the lower surface side of the lid's inner side, then the lid packing can be securely attached to seal the nozzle part, but it becomes difficult to attach and detach the lid packing to and from the lid
Solution Approach 1:
The patent inverts the attachment direction by making the lid packing detachable from the upper side of the lid instead of from the lower surface side. The lid packing includes a protrusion that can be pinched and pulled out from the upper side, allowing easy removal while maintaining secure attachment through the fitted shaft part in the hole part from the lower side.
Solution Approach 2:
The patent introduces a protrusion as an intermediary element that extends from the lid packing through the lid. This protrusion serves as a mediator that allows users to easily grasp and remove the lid packing from the upper side without compromising the fitted connection between the shaft part and hole part that ensures secure attachment.
2Reliability
If the lid packing is securely fitted into the lid from the lower surface side, then sealing is maintained, but separate cleaning of the lid and lid packing becomes difficult
Solution Approach 1:
The patent inverts the removal approach by enabling detachment from the upper side. The protrusion extending from the lid packing allows it to be pulled out from the upper side of the lid, making separate cleaning of the lid and lid packing easy while maintaining the secure fitted connection for sealing when in use.
3Ease of operation
If the protrusion is made long enough to be pinched with fingers for easy removal, then ease of operation improves, but the lid packing structure becomes more complex
Solution Approach 1:
The patent segments the lid packing into distinct functional parts: a shaft part that fits into the hole part for secure attachment, a stopper part that seals the nozzle part, and a protrusion that extends outward for easy grasping. This segmentation allows each part to perform its specific function efficiently without overcomplicating the overall structure.
Solution Approach 2:
The patent applies local quality by making only the necessary portion of the lid packing protrude from the lid. The protrusion is designed with appropriate length and shape to be easily pinched with fingers, while the rest of the lid packing maintains a compact form factor. This localized modification improves ease of operation without significantly increasing overall structural complexity.
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 enhances usability by simplifying the attachment and detachment of the lid packing, improving hygiene by allowing separate cleaning and ensuring reliable sealing of the nozzle part.
Implementation Method 1
an elastic flange part that adheres to the inner peripheral surface of the nozzle part
Data Source
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AI summary
A cap unit that enables the easy attachment and detachment of a lid packing with respect to a lid. A cap unit 1 detachably attached to a container body 2 with an upper opening, comprising: a cap body 8 that closes the upper opening 2d of the container body 2 and is provided with a nozzle part 17 communicating with the inside of the container body 2; a lid 10 that opens and closes the tip end of the nozzle part 17; and a lid packing 31 that is detachably attached to the lid 10 and seals the tip end of the nozzle part 17, wherein the lid packing 31 has a protrusion 31c that can enter the inside of the nozzle part 17 and the lid packing 31 is attached so as to be visible from the outside when the lid 10 closes the tip end of the nozzle part 17.