Laundry Drum Door Sealing Design for Even Attachment Without Adhesive
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional laundry treatment apparatuses face challenges in allowing a drawer to be discharged from a cabinet when the door is opened, interference between the door and introduction aperture, and inadequate sealing, especially with adhesive-based sealing members.
Innovation Solution
The apparatus includes a tub, drum, door, hinge, fixing unit, and a sealing unit with a C-shaped cross section that provides even and firm attachment without adhesives, allowing the door to be easily opened and closed, and includes a position sensing unit to notify users of door opening, preventing water leakage and facilitating drawer discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sealing member with adhesive is used to seal the introduction aperture, then sealing is achieved, but the adhesive surface creates uneven attachment and potential leakage
Solution Approach 1:
The adhesive is extracted and removed from the sealing system. Instead of using adhesive-based sealing members, the patent employs a mechanical sealing structure where the door cover and door body form a seal through their geometric fit and elastic sealing elements, eliminating the uneven attachment problems associated with adhesives
Solution Approach 2:
The sealing system uses composite construction combining rigid door cover and door body structures with elastic sealing elements. This composite approach provides both structural integrity and flexible sealing capability without relying on adhesive materials
2Reliability
If a sealing member is attached to a door with varying thickness, then the door can be sealed, but the sealing member cannot be evenly attached due to thickness variation
Solution Approach 1:
The door cover is designed with locally varied thickness to compensate for the varying thickness of the door body. This local quality adjustment ensures that the sealing surface remains uniform and planar across the entire sealing perimeter, allowing even attachment of sealing elements despite the overall thickness variation of the door assembly
3Reliability
If a fixing unit is added to couple the door to the tub cover, then the door is securely fixed, but the device complexity increases
Solution Approach 1:
The fixing unit is merged with the door cover structure itself. The door cover incorporates integral fixing features that couple it to the tub cover, eliminating the need for separate, complex fixing mechanisms while maintaining secure door attachment
Data Source
AI summary
A laundry treatment apparatus includes a tub body for receiving water, a tub cover that covers an upper surface of the tub body and that defines an introduction aperture, a drum located inside the tub body for receiving laundry, a door for opening and closing the introduction aperture, a hinge that rotatably couples the door to the tub cover, a fixing unit that releasably couples a portion of the door to the tub cover, and a sealing unit on the door or the introduction aperture that is configured to seal the introduction aperture based on the introduction aperture being closed by the door. A portion of the sealing unit located in a direction in which the fixing unit is provided has a different diameter from a diameter of a portion of the sealing unit that is located in a direction in which the hinge is provided.