Dishwasher Door Spring Adjustment Without Side Cover Disassembly
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Solution Overview
Problem
Adjusting the tension of the spring controlling a dishwasher door becomes inconvenient when a cover is coupled, requiring disassembly and reassembly to match the changed weight, especially in built-in types where space efficiency and aesthetics are prioritized.
Innovation Solution
A spring adjustment apparatus with a rotatable adjustment member and movable bracket system that allows for precise tension adjustment without disassembling the side cover, using a tool to rotate the adjustment member and verify the position through position verification holes, ensuring equal left and right spring tension.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a cover is coupled to the door to achieve built-in installation and aesthetic appearance, then the door weight increases and space efficiency improves, but the spring tension adjustment becomes inconvenient requiring disassembly
Solution Approach 1:
The spring adjustment mechanism is segmented into multiple adjustment holes positioned at different locations along the spring mounting path. This allows the spring tension to be adjusted in discrete steps by selecting different mounting holes, eliminating the need for complete disassembly while adapting to different door weights caused by cover installation.
Solution Approach 2:
The spring mounting system is made dynamically adjustable through multiple positioned holes rather than a fixed single-point attachment. This dynamic adjustment capability allows the spring tension to be optimized for different door configurations (with or without cover) while maintaining convenient access without full disassembly.
2Reliability
If the spring tension is adjusted by hooking to appropriately positioned holes according to door weight, then the spring tension matches the door weight, but the door case must be disassembled and reassembled
Solution Approach 1:
Multiple adjustment holes are pre-positioned at optimal locations along the spring mounting path during manufacturing. This preliminary preparation of adjustment positions allows for quick selection and mounting without requiring complex disassembly and reassembly procedures, while ensuring accurate spring tension matching for different door weights.
3Ease of operation
If the spring adjustment requires disassembly of the side cover, then the spring tension can be adjusted, but the installation and maintenance time increases
Solution Approach 1:
The spring adjustment function is extracted and made accessible through multiple holes that can be reached without complete disassembly of the side cover. This extraction of the adjustment capability allows quick access to spring tension adjustment while minimizing the time required for installation and maintenance operations.
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
Enables convenient and accurate adjustment of the spring tension according to varying door weights, facilitating easy door operation and installation without disassembling the side cover, ensuring consistent and stable door opening and closing.
Implementation Method 1
one end of a spring fixed onto the main body of the dishwasher is connected to the hinge member to pull the door of the dishwasher
Implementation Method 2
the weight of the door surpasses a force of restoration by a spring
Data Source
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AI summary
A dishwasher (1) that enables a user to adjust a load of a spring depending on material and weight of a cover that is attached to a door of the dishwasher. The dishwasher (1) includes a housing (10) having a bottom 10a), a rear (10b), and side covers (10c), a door (11) rotatably installed on a front surface of the housing (10), a door hinge (20) installed onto each lower end of the door (11) while being rotatably coupled to the housing (10), a spring (40) configured to adjust a rotation of the door (11), and an apparatus (50) of adjusting the spring (40) configured to adjust a load of the spring (40). The apparatus (50) includes a movable bracket (70) connected to the spring (40), an adjustment member (60) which enables the movable bracket (70) to move up and down, and a support bracket (51) configured to support the adjustment member (60). A position verification hole (80, 80a ... 80e) is perforated through the housing (10) such that the apparatus (50) is checked from outside the housing (10).