Cleaner Nozzle Motor Support Structure for Static Discharge and Cooling
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Solution Overview
Problem
Vacuum cleaner nozzles suffer from static electricity damage to PCBs and inadequate heat dissipation and vibration issues due to the motor being housed within the brush bar, leading to inefficiencies in cleaning.
Innovation Solution
A nozzle design with a motor supporter and housing configuration that creates separate air flow paths for cooling and static discharge, integrating the motor, gear unit, and supporter to reduce vibrations and prevent static transfer to the PCB.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the motor is housed within the brush bar to enable rotation cleaning, then the cleaning function is improved, but static electricity generated during contact with the floor surface can be transferred to the PCB, causing damage
Solution Approach 1:
A motor supporter structure is introduced as an intermediary component between the motor and the housing. This motor supporter includes a recessed portion that creates a discharge path for static electricity, allowing it to be safely diverted away from the PCB while maintaining the motor's integration with the brush bar for effective cleaning
Solution Approach 2:
The housing structure is segmented into distinct regions: a motor supporter with a recessed portion, a motor housing space, and a discharge path. This segmentation allows static electricity to be channeled through a dedicated path rather than directly affecting the PCB, while preserving the motor's functional integration
2Productivity
If the motor is housed within the brush bar to enable rotation cleaning, then the cleaning function is improved, but heat dissipation of the motor is not properly performed
Solution Approach 1:
The motor supporter includes a recessed portion that extends in the depth direction, creating a three-dimensional discharge path and cooling channel. This dimensional approach allows air flow to pass through the motor housing space, providing effective heat dissipation while maintaining the motor's integrated position for cleaning functionality
3Productivity
If the motor is housed within the brush bar to enable rotation cleaning, then the cleaning function is improved, but vibration generated in the drive unit is not reduced
Solution Approach 1:
The motor supporter, motor, and gear unit are merged into an integrated assembly. The motor supporter serves multiple functions: supporting the motor, providing a recessed portion for static discharge, and creating a unified structure that reduces vibration through combined mass and improved mounting stability
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
Effectively prevents static electricity damage to the motor's PCB, enhances heat dissipation, and reduces vibrations, improving the cleaning efficiency and longevity of the vacuum cleaner's components.
Implementation Method 1
a recessed portion is formed in the motor supporter on which a motor is mounted and the PCB and the motor supporter of the motor is spaced apart from each other so that static electricity generated in the nozzle of the vacuum cleaner can be naturally discharged without being transferred to the PCB of the motor
Implementation Method 2
the nozzle of the cleaner of the present invention can provide a space portion between the motor supporter and the cover of the housing so that static electricity generated from the outside can be naturally discharged without being transferred to the motor supporter
Data Source
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AI summary
According to an aspect of the present invention, there is provided a nozzle of a cleaner including: a housing; a rotation cleaning unit which is accommodated in the housing and cleans a surface to be cleaned by a rotation operation thereof; and a drive unit which is inserted into a side of the rotation cleaning unit to rotate the rotation cleaning unit, in which the drive unit includes a motor which generates a driving force, a motor supporter which is fixed to the housing and to which the motor is coupled, a gear unit which is connected with a rotation shaft of the motor to transfer a driving force, and a shaft which is connected to the gear unit and the rotation cleaning unit to transfer a rotation force to the rotation cleaning unit, in which a printed circuit board (PCB) installation portion in which a PCB is installed and which is spaced apart from the motor supporter is provided in the motor, and in which a first space portion in which the air flows is formed between the motor supporter and the PCB installation portion.