Dishwasher Door Bracket and Guider Layout for Cover Panel Load
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Solution Overview
Problem
Dishwashers face issues with door damage and structural deformation due to the concentrated load of cover panels, leading to friction and noise, as existing guide structures do not adequately support the load or distribute it effectively.
Innovation Solution
A dishwasher design featuring a link module with upper and lower holders and guiders that allow the cover panel to move in the door's length direction, supported by a door bracket rotatably connected to the tub, distributing the load and minimizing friction through elastic members and reinforcing structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a cover panel with high density material is used, then the cover panel has better durability and structural integrity, but the load on the door increases making it difficult to maintain the open state
Solution Approach 1:
A door bracket is introduced as an intermediary component between the cover panel and the door. The door bracket is fixed to the door and rotatably connected to the tub, serving as a mediator that supports the cover panel's weight and reduces the direct load on the door, enabling the door to be easily opened and closed while using durable high-density cover panel materials
Solution Approach 2:
The support function is segmented into two parts: the door bracket handles the weight support and rotational connection to the tub, while the door itself only needs to provide mounting surface. This segmentation allows the door to be lighter and easier to operate while the cover panel maintains its durability through high-density material
2Adaptability or versatility
If the cover panel is movably mounted on the door, then the cover panel can be adjusted for interior unification, but friction occurs between the cover panel and door causing damage and noise
Solution Approach 1:
Upper and lower guiders are introduced as intermediary components between the cover panel and the door. These guiders guide the movable cover panel along a predetermined path, reducing direct contact and friction between the cover panel and door surface, thereby preventing damage and noise while maintaining adjustability
Solution Approach 2:
The cover panel is designed to be movable along the guiders, allowing dynamic adjustment for interior unification. The guiders constrain this movement to a controlled path, enabling adaptability while minimizing harmful friction through proper mechanical guidance
3Device complexity
If the cover panel load is concentrated on a small portion of the door, then the mounting structure is simpler, but the door becomes damaged at the mounting portion
Solution Approach 1:
The door bracket serves as a mediator that distributes the cover panel load. Instead of concentrating the load at a single mounting point on the door, the door bracket spreads the force across a larger area and transfers it to the tub through rotational connection, preventing door damage while maintaining mounting simplicity
Solution Approach 2:
The load distribution is moved from a two-dimensional plane on the door surface to a three-dimensional structure involving the door bracket and tub connection. This dimensional change allows the load to be distributed across multiple points and transferred through rotational movement, reducing stress concentration on the door
Data Source
AI summary
A dishwasher includes a tub, a base below the tub, a door, a door bracket fastened to the door and rotatably connected to the tub, a cover panel that covers the door and the base and is movably disposed in the door, a link module that moves the cover panel in a length direction of the door, an upper holder fastened to the cover panel and movably mounted in the door, and a lower holder spaced apart from the upper holder, fastened to the cover panel, and movably mounted in the door. The door includes an upper guider that supports the upper holder guides movement of the cover panel, and a lower guider that supports the lower holder and guides movement of the cover panel. The door bracket is fastened to the door at a rear of the lower guider in which the lower holder is mounted.