Stand Mixer Attachment Biasing Combination to Minimize Shaft Play
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Solution Overview
Problem
Traditional stand mixer attachment systems experience wear and looseness due to vertical movement along the shaft, leading to inconsistent mixing, attachment wear, and operational issues, exacerbated by the removal of springs and washers in modern designs, making retrofitting difficult.
Innovation Solution
A stand mixer assembly featuring a custom-fit spring and split washer combination that secures the attachment without disassembly, using a compression spring and split washer to minimize play and enhance mixing performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional spring and washer are removed from stand mixer design, then manufacturing simplicity is improved, but attachment stability deteriorates
Solution Approach 1:
The biasing combination is divided into separate components (spring and split washer) that can be independently manufactured and assembled, maintaining manufacturing simplicity while achieving the stabilizing function through their combined action
Solution Approach 2:
The spring provides pre-compression force that cushions and compensates for attachment movement before excessive play occurs, preventing the stability issues that would otherwise require complex manufacturing solutions
2Device complexity
If spring and washer are removed to simplify manufacturing, then device complexity is reduced, but mixing consistency deteriorates
Solution Approach 1:
The solution uses simple segmented components (spring and split washer) that are easy to manufacture, yet their combined biasing action ensures consistent attachment positioning and mixing performance
Solution Approach 2:
The spring's compression force parameter is optimized to maintain consistent attachment pressure on the shaft, ensuring uniform mixing performance without requiring complex precision components
3Reliability
If traditional spring and washer are retrofitted into modern mixers with press-fit gears, then attachment stability is improved, but ease of operation deteriorates
Solution Approach 1:
The biasing combination is designed as separable components that can be installed independently through the attachment hub, allowing retrofitting without disassembling the motor housing or removing the shaft
Solution Approach 2:
The split washer acts as an intermediary component that facilitates the installation of the spring combination through the attachment hub opening, enabling easy installation without complex disassembly procedures
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
The solution effectively minimizes attachment play, enhances mixing consistency, extends the lifespan of mixer components, and reduces noise and vibration, while being compatible with both older and newer stand mixer models.
Implementation Method 1
The compression spring may have an upper end and a lower end and disposed about the shaft and positioned between the motor housing and the retaining pin. The split washer may be positioned about the shaft between the lower end of the compression spring and the retaining pin so the compression spring biases the split washer toward the retaining pin.
Data Source
AI summary
A mixer attachment biasing combination is disclosed herein. The mixer attachment biasing combination may comprise a spring and a split washer. The mixer attachment biasing combination may be installed onto an existing stand mixer shaft without requiring any disassembly of the stand mixer. Once installed, the mixer attachment biasing combination may supply a distally-directed force against a mixer attachment, preventing movement of the attachment along the shaft.