Horizontal-Axis Washer Drum Door for Easier Top Loading
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Solution Overview
Problem
Conventional washing machines lack a convenient mechanism for loading and unloading laundry, leading to difficulties in accessing the drum for efficient operation and maintenance.
Innovation Solution
A washing machine design featuring a rotatable drum with an automatically opening and closing door mechanism, driven by a single motor, and a clutch unit that selectively transmits power to the drum, allowing for easy access and minimizing space usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a drum door is added to enable convenient loading and unloading of laundry, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The drum door mechanism is merged with the drum structure itself. The door is integrated into the drum's outer circumferential surface, sharing the same rotational axis and mounting structure. This integration eliminates separate door support structures and simplifies the overall mechanism while maintaining the convenience of loading and unloading laundry.
Solution Approach 2:
The drum door serves multiple functions: it acts as both the access door for loading/unloading laundry and as part of the drum structure that rotates during washing operations. The door is designed to function both as a stationary closure when closed and as a rotating component during drum rotation, eliminating the need for separate door hinges and support mechanisms.
2Ease of operation
If the drum door is made larger to facilitate laundry access, then ease of operation is improved, but the space occupied by the door increases
Solution Approach 1:
The drum door is designed to rotate dynamically with the drum rather than being a fixed stationary structure. This dynamic design allows the door to open to any position during drum rotation, providing easy access to the drum interior without requiring a permanently large opening. The door can be positioned optimally for loading/unloading while minimizing its projected area when not in use.
Solution Approach 2:
Instead of increasing the door's area in the plane of the drum front, the solution utilizes the rotational dimension. The door can be rotated to various angles, allowing access to the drum interior from different positions. This transforms a two-dimensional area problem into a three-dimensional spatial solution, providing easy access without increasing the door's footprint.
3Ease of operation
If a clutch unit is added to selectively transmit power to the drum, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The clutch unit is merged with the existing power transmission system components. The clutch mechanism is integrated into the belt drive system, sharing mounting locations and structural elements with the belt and pulleys. This integration allows the clutch to selectively engage and disengage power to the drum without requiring completely separate power transmission paths, thereby reducing overall system complexity.
Solution Approach 2:
The clutch unit is designed to serve multiple functions: it selectively transmits power to the drum for washing operations, allows the drum door to rotate independently for loading/unloading, and can be controlled through the existing motor and belt system. This multi-functionality reduces the need for separate control mechanisms and simplifies the overall power transmission architecture.
Data Source
AI summary
A washing machine includes a tub fixedly installed in a cabinet, a drum rotatably installed in the tub for containing laundry and provided with an opening formed through the outer circumferential surface thereof so that the laundry is taken into and out of the drum through the opening. A drum door is provided at the opening of the drum and moves in the circumferential direction of the drum relative to the drum to open and close the opening of the drum. A driving unit rotates the drum.