Suction Head Rotating Brush Assembly with Vibration Damping Support
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Solution Overview
Problem
Vacuum cleaners with suction heads often generate vibrations and noise due to misalignment between the axis of rotation and the central axis of the brush, detracting from user comfort during cleaning.
Innovation Solution
A cleaning unit for the suction head featuring a rotary brush mounted in a receiving housing with a brush holder, a rotary support integral to the brush, and an elastically deformable support element between the pivot and the brush holder, which filters and limits the transmission of vibrations and noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a rotary brush is mounted with pivot connections to allow rotation relative to the main body and closure cap, then the cleaning unit achieves proper brush rotation and cleaning function, but vibrations and noise are generated due to misalignment between the axis of rotation and central axis of the brush
Solution Approach 1:
A support element is introduced as an intermediary component between the rotary brush and the brush holder. This support element absorbs and dampens vibrations generated during brush rotation, preventing their transmission to the main body and closure cap. The support element acts as a mediator that maintains the functional rotation while filtering out harmful vibrations and noise.
Solution Approach 2:
The support element modifies the mechanical parameters of the system by introducing vibration damping characteristics. It changes the way forces are transmitted through the pivot connections, reducing the amplitude and frequency of vibrations that reach the main body and closure cap, thereby decreasing noise generation.
2Object-affected harmful factors
If the pivot axis is substantially coincident with the central axis of the rotating brush, then misalignment is reduced, but the complexity of precise alignment during assembly increases
Solution Approach 1:
The support element is designed to automatically compensate for minor misalignments between the pivot axis and the central axis of the brush. Through its elastic or damping properties, it self-adjusts to accommodate slight variations in assembly, eliminating the need for extremely precise alignment procedures while still reducing vibrations and noise.
3Object-affected harmful factors
If the support element is positioned between the brush support and the pivot, then vibrations are filtered effectively, but the structural complexity of the assembly increases
Solution Approach 1:
The support element is integrated with existing components of the brush holder assembly, merging its vibration damping function with the structural support function. This combination approach allows the support element to be positioned strategically between the brush support and pivot without requiring separate additional assembly steps or complex structural modifications.
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 significantly enhances user comfort by reducing vibrations and noise during operation, making the cleaning process more comfortable and efficient.
Implementation Method 1
a support element which is elastically deformable and on which the pivot is mounted, the support element being disposed between the support brush and rotating support
Implementation Method 2
a support element which is elastically deformable and on which the pivot is mounted
Data Source
Figure 1~2
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Figure 5~6
AI summary
The cleaning unit (11) includes a rotating brush (12) which is configured to be removably mounted in a receiving housing (9) for a suction head (2); a brush holder (16) configured to close a passage opening (14) provided on the suction head (2), the brush holder (16) having a cap body configured to be fixed to the main body of the suction head (2), the rotating brush (12) being mounted to rotate freely relative to the cap body; a rotating support (28) which is rotationally fixed to the rotating brush (12) and which is connected to the cap body via a pivot (34); and a support element (35) which is elastically deformable and on which the pivot (34) is mounted, the support element (35) being disposed between the pivot (34) and the cap body or between the pivot (34) and the rotating support (28).