Rotary Vacuum Brush Clamping Structure for Stable Bristle Attachment
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Solution Overview
Problem
The existing rotary brush units for electric vacuum cleaners, where brushes are formed from pile fibers sewn onto a base, face instability in the joint between the brush and the base, leading to potential loosening and reduced joint strength.
Innovation Solution
A brush design featuring fiber bundles bound by binding fibers, with a clamping section that securely attaches the bristle section to the base, utilizing an adhesive synthetic resin to impregnate the fiber bundles and ensuring stable contact between the binding fibers and the clamping pieces, thereby preventing the bristle section from detaching during use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the brush is formed by sewing and connecting pile fibers into a brush base, then the brush can be manufactured, but the relative position of the brush with respect to the brush base cannot be maintained in a stable manner and the joint portion is likely to loosen
Solution Approach 1:
The brush is divided into discrete fiber bundles rather than a continuous pile structure. Each fiber bundle is independently bound by binding fibers and can be separately clamped by the clamping part, allowing for more precise and reliable attachment to the brush base while maintaining manufacturing feasibility
Solution Approach 2:
The fiber bundles are pre-bound with binding fibers before being attached to the brush base. This preliminary binding action creates a stable structure that maintains relative position with respect to the brush base and prevents loosening during use, while still allowing for straightforward manufacturing through the sewing process
2Strength
If the fiber bundles are impregnated with adhesive synthetic resin material, then the joint strength between bristle section and base is improved, but the complexity of the manufacturing process increases
Solution Approach 1:
The adhesive synthetic resin material is applied locally only to the clamped areas of the fiber bundles where the clamping part contacts the bristle section, rather than impregnating the entire brush structure. This localized application provides sufficient joint strength at the critical attachment points while keeping the manufacturing process relatively simple and avoiding unnecessary complexity in other areas
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 provides a robust and stable attachment of the bristle section to the base, preventing loosening and ensuring effective dust collection without the bristle section falling off, even under load, while allowing for easy mounting and maintaining performance by limiting resin impregnation to only the clamped areas.
Implementation Method 1
The fiber bundles are impregnated with an adhesive synthetic resin material
Data Source
AI summary
A brush includes a bristle section and a base. The bristle section includes fiber bundles and binding fibers, which bind and couple the fiber bundles together. The base has a clamping part, which clamps part of the bristle section. The fiber bundles are arranged in a row in a direction perpendicular to a direction in which fibers of the fiber bundles extend. The binding fibers are sequentially adjacent in a direction in which the fibers of the fiber bundles extend. The clamping part clamps part of the bristle section to cover the binding fibers.