Washer Door Recess Structure for Impact-Resistant Lock Alignment
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Solution Overview
Problem
Conventional drum type laundry machines suffer from damage to the door assembly and recess part due to external impacts, leading to deformation and failure of the locking mechanism, as the distance between the door assembly and the recess part is excessive, causing the door assembly to potentially deform beyond the locking member and fail to recognize the closed state.
Innovation Solution
A drum type laundry machine design featuring a recess part with a protrusion or step part along its inner circumference to reinforce strength and support the door assembly securely, minimizing the distance between the door assembly and the recess part, and incorporating a facing part with varying widths to disperse external impact loads and maintain precise communication between the hook assembly and locking assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the door assembly is positioned far from the recess part, then the door assembly can be easily installed and maintained, but the door assembly and recess part are susceptible to damage from external impacts
Solution Approach 1:
The patent applies preliminary action by pre-forming a recess part in the body that is positioned close to the door assembly before final assembly. This recess structure is prepared in advance to provide impact protection, eliminating the need for post-installation adjustments and maintaining ease of installation while preventing damage from external impacts during transportation and use.
Solution Approach 2:
The patent transitions from a linear distance relationship to a three-dimensional spatial relationship by creating a recess part that extends inward from the body surface. This dimensional change allows the recess to provide structural support and impact absorption in multiple directions while maintaining a compact overall structure that does not increase the external dimensions of the appliance.
2Ease of manufacture
If the recess part has a large plane portion, then the door assembly can be securely mounted, but the recess part loses strength and may deform under impact
Solution Approach 1:
The patent applies local quality by creating a recess part with non-uniform thickness distribution. The recess has a larger plane portion area for mounting security, but the thickness varies locally to maintain overall strength. Specifically, the recess part has greater thickness in critical areas to resist deformation while providing sufficient surface area for secure door assembly mounting.
Solution Approach 2:
The patent employs composite material principles by combining the recess part structure with the main body in a way that creates a composite structural system. The recess part and body work together as an integrated composite structure where the recess provides mounting surface area while the combined structure maintains strength through their integrated configuration, preventing deformation under impact loads.
3Ease of repair
If the door assembly is deformed by impact, then it can be easily replaced, but the locking mechanism fails to recognize the closed state
Solution Approach 1:
The patent applies preliminary action by pre-positioning the recess part in a fixed, precise location relative to the door assembly's locking mechanism. This preliminary positioning ensures that even if the door assembly is replaced after deformation, the recess will correctly guide and position the new door assembly, ensuring the locking mechanism properly recognizes the closed state without requiring complex adjustment procedures.
Data Source
AI summary
A drum type laundry machine is disclosed. A drum type laundry machine comprises a cabinet cover for defining a front surface of a body, the cabinet cover having an opening for loading/unloading the laundry therein/there from, a recess part recessed toward an inside of the body along a circumference of the opening, a door assembly having some portion inserted in the recess part when being closed together with the opening, a protrusion projected from an inner surface of the recess part to reinforce strength of the recess part and to support the door assembly securely. An object of the present invention is to provide a drum type laundry machine which can precisely communicate a hook assembly of a door assembly with a locking assembly. Another object of the present invention is to provide a drum type laundry machine which can prevent the damage of the door assembly due to deformation between the door assembly and a body, external impact might cause.