Cleaner Head Brush Drum Support to Reduce Rotation Axis Misalignment
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Solution Overview
Problem
The existing cleaner designs suffer from misalignment of the brush drum's rotation axis due to the cantilevered support of the driving motor, leading to noise and instability, as the driving housing is prone to bending and misalignment under the weight of the motor.
Innovation Solution
A cleaner head design with a brush case that includes a first and second support portion to stabilize the brush drum, featuring a bearing mounting portion and a driving mounting portion that separate the support structures to minimize misalignment, using a bearing and driving housing assembly that is fixed through multiple points to prevent axis misalignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the driving motor is arranged inside the brush drum and the driving housing is supported in a cantilever form, then the cleaner head can be compact, but the driving housing bends or misaligns due to motor weight causing rotation axis misalignment
Solution Approach 1:
The support structure is divided into two separate support portions positioned at different locations along the rotation axis of the brush drum. This segmentation allows each support portion to independently bear specific loads, preventing the cantilever bending issue while maintaining compact dimensions. The first support portion supports one end of the brush drum and the driving housing, while the second support portion supports the other end, creating a distributed support system.
Solution Approach 2:
The support structure transitions from a single-point cantilever support to a distributed multi-point support system along the rotation axis dimension. By arranging support portions at multiple locations along the axial direction, the structure gains dimensional distribution that eliminates the cantilever effect and prevents misalignment while preserving compact overall volume.
2Device complexity
If the driving housing is supported by one end portion of the cleaner head, then the structure is simplified, but noise is generated due to misalignment of the brush drum rotation axis
Solution Approach 1:
The support function is segmented into multiple support portions rather than relying on a single support point. This segmentation distributes the support function across multiple locations, maintaining structural simplicity while eliminating the misalignment that causes noise. Each support portion contributes to stabilizing the rotation axis without adding complex adjustment mechanisms.
3Ease of manufacture
If the driving housing is supported in a cantilever form, then the assembly is easier, but the driving housing bends due to the weight of the driving motor
Solution Approach 1:
The support function is divided into multiple support portions located at different positions along the brush drum's rotation axis. This segmentation provides distributed support that prevents the driving housing from bending under motor weight, while the modular nature of the support portions maintains ease of assembly. Each support portion can be independently positioned and secured.
Solution Approach 2:
The support structure merges multiple support functions into a coordinated system where support portions at different locations work together. The first support portion and second support portion are both integrated into the brush case structure, combining their support functions to stabilize the brush drum and driving housing simultaneously against gravitational and operational loads.
Data Source
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AI summary
A cleaner head having a first support portion and a second support portion of a brush case rotatably supporting a brush drum, includes a base portion forming an end of the brush case, a bearing mounting portion protruding toward the brush chamber from the base portion to support a bearing coupled to one end portion of the brush drum and providing an insertion space into which an end portion of a driving housing is insertable, and a driving mounting portion arranged to be separated from the bearing mounting portion and supporting an end portion of the driving housing inserted into the insertion space.