Washing Machine Door Window Mounting With Flexible Seating Ribs
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Solution Overview
Problem
The existing door window mounting systems in washing machines and dryers face issues with fabrication tolerances, leading to difficulties in assembly and a tendency for the door window to hang down or rotate improperly, potentially causing water leakage and structural instability.
Innovation Solution
The implementation of flexible seating ribs on the door frames, combined with reinforcing ribs and rotation preventive structures, ensures proper alignment, supports the door window against gravity, and prevents rotation, using elastic deformation to absorb tolerance discrepancies and enhance structural rigidity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a rigid seating structure is used to precisely position the door window, then manufacturing precision is improved, but assembly difficulty increases due to tolerance mismatches
Solution Approach 1:
The seating rib is designed with flexible material properties and geometric characteristics that allow it to deform elastically during assembly. This flexibility enables the seating rib to adapt to tolerance variations in the door window edge portion, allowing easy assembly while maintaining precise positioning once assembled
Solution Approach 2:
The seating rib transitions from a static rigid structure to a dynamic flexible structure that can deform and recover. During assembly, the flexible seating rib deforms to accommodate the door window, then returns to its original shape to provide stable support, resolving the contradiction between precise positioning and assembly ease
2Ease of manufacture
If a flexible seating rib is used to ease assembly, then ease of manufacture is improved, but the door window may hang down due to insufficient structural rigidity
Solution Approach 1:
The seating rib's flexibility parameter is carefully controlled within specific ranges to provide enough elasticity for easy assembly while maintaining sufficient rigidity to support the door window weight and prevent hanging down
Solution Approach 2:
The seating rib is formed as an integrated composite structure with the door frame, combining the rigidity of the door frame material with the flexible seating rib material to achieve both easy assembly and adequate structural strength
3Reliability
If the door window is securely mounted to prevent rotation, then reliability is improved, but the door window may become difficult to assemble
Solution Approach 1:
The rotation preventive structure is designed with guide surfaces that automatically align the door window during the assembly process before the final positioning. This preliminary alignment action prevents rotation issues while maintaining easy assembly
Solution Approach 2:
The flexible seating rib acts as an intermediary between the door window and the rotation preventive structure, allowing the door window to be easily inserted while the rotation preventive structure provides the necessary anti-rotation constraint
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
This solution enables secure and stable mounting of the door window, preventing hang-down issues and rotation, ensuring effective water containment and improved assembly processes despite fabrication tolerances, while maintaining structural integrity.
Implementation Method 1
the deformation absorbs the tolerance, enabling the placing of the door window. In such a placed state, the seating rib holds the door window positively by an elastic force of the deformation.
Data Source
AI summary
The present invention relates to mechanical apparatuses, such as washing machines or dryers, for washing or drying laundry, and more particularly to a door on a mechanical apparatus, in which a window (76) of the door can be mounted on a frame (72) thereof fit thereto, and which can prevent the window from hanging down by gravity. The door includes a formed door frame (80), a rear door frame (90), and a door window. The door window (76) may be a door glass of glass, or transparent plastic. There is a flexible seating rib (102) formed on the front door frame (80) or the rear door frame (80) or the rear door frame (90) for seating and supporting an edge portion (77) of the door window (76).