Universal Roller Spindle Assembly for Standard and Jumbo Covers
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Solution Overview
Problem
Existing paint rollers are limited to carrying either standard or jumbo mini-roller covers, requiring separate purchases for different sizes, and lack versatility in accommodating various roller cover sizes.
Innovation Solution
A universal roller frame design featuring a spindle assembly with a bearing and chuck configuration that allows for interchangeable spindle assemblies, enabling the same frame to accommodate both standard and jumbo mini-roller covers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a roller frame is designed with a fixed spindle size for standard mini-roller covers, then the structural simplicity and manufacturing ease are maintained, but the adaptability to different roller cover sizes is reduced
Solution Approach 1:
The roller frame is designed with a universal spindle assembly that can accommodate both standard mini-roller covers (1/4 inch ID) and jumbo mini-roller covers (3/4 inch ID) through a single frame structure. The spindle features a stepped configuration with different diameter sections that can engage with roller covers of different sizes, allowing one frame to perform multiple functions and support various roller cover types without requiring separate frames for each size.
2Adaptability or versatility
If a roller frame uses a simple fixed spindle design, then the manufacturing cost and device complexity are reduced, but the versatility and adaptability to different roller cover sizes deteriorate
Solution Approach 1:
The spindle assembly is segmented into distinct functional sections with different diameters along its length. The stepped spindle features a first section with a first diameter for engaging standard mini-roller covers and a second section with a second diameter for engaging jumbo mini-roller covers. This segmentation allows the single spindle to interface with multiple roller cover sizes while maintaining a relatively simple manufacturing process compared to designing entirely separate spindles for each size.
3Adaptability or versatility
If consumers purchase separate roller frames for different roller cover sizes, then the adaptability and coverage of roller cover sizes are improved, but the device complexity and number of components required increase
Solution Approach 1:
The roller frame incorporates a universal spindle assembly capable of accommodating both standard and jumbo mini-roller covers, eliminating the need for consumers to purchase separate frames for different roller cover sizes. This multi-functional design allows a single frame to replace what would traditionally require two or more separate frames, reducing the total quantity of components needed while maintaining full size coverage.
Data Source
AI summary
A fluent material roller spindle assembly includes a bearing and a chuck rotatably carried on the bearing about a rotational axis established by the bearing. The bearing includes a radially outer bearing surface and a radially inner bearing surface circumscribing the rotational axis, an axially outboard bearing end, and an axially inboard bearing end. The chuck includes a radially outer chuck surface and a radially inner chuck surface circumscribing the rotational axis, an axially outboard chuck end, and an axially inboard chuck end. A bearing portion of the radially inner chuck surface is carried on a corresponding chuck portion of the radially outer bearing surface. A fluent roller frame includes a handle, the spindle assembly, and a wire having a handle portion coupled to the handle, a spindle shaft on which the spindle assembly is rotatably mounted, and an offset portion between the handle portion and the spindle shaft.