Handheld Vacuum Dust Cup Filter for Bottom-Access Motor Protection
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Solution Overview
Problem
In handheld vacuum cleaners, residual dust often enters the motor due to insufficient space for a front filter sponge, affecting motor performance and life, and requiring users to disassemble the dust cup for filter replacement.
Innovation Solution
A design where the inlet filter sponge component can be directly withdrawn from the bottom of the dust cup, with a rubber ring for sealing and positioning, allowing for easy replacement and cleaning without disassembling the dust cup, ensuring motor performance and user convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the motor is arranged above the dust cup filter to compress product volume, then the device volume is reduced and rear outlet filtering is improved, but there is insufficient room for the front filter sponge, causing residual dust to enter the motor directly
Solution Approach 1:
The filter system is segmented into multiple components: a dust cup filter for primary filtration, an inlet filter sponge for secondary filtration, and an inlet strainer component for peripheral filtration. This segmentation allows each filter to perform its specific function while maintaining compact overall device volume.
Solution Approach 2:
The inlet filter sponge component is nested within the cyclone filter structure, and the inlet strainer component is arranged around the periphery of the inlet filter sponge. This nested arrangement maximizes space utilization in the compact motor-above-dust-cup configuration while ensuring adequate filtration protection for the motor.
2Reliability
If the inlet filter sponge is fixed inside the dust cup, then filtration is effective, but users must disassemble the dust cup for filter replacement and cleaning
Solution Approach 1:
The inlet filter sponge component is extracted from the traditional fixed position inside the dust cup and relocated to the bottom of the dust cup where it can be directly accessed through an opening. This extraction allows users to remove and clean the filter sponge without disassembling the dust cup, significantly improving maintenance convenience while maintaining filtration effectiveness.
Solution Approach 2:
The dust cup base cover is designed with an opening that provides direct access to the inlet filter sponge component. This self-service design enables users to easily remove, clean, and replace the filter sponge themselves without requiring technical assistance or complex disassembly procedures.
3Ease of operation
If the inlet filter sponge component is made removable from the bottom of the dust cup, then user convenience is improved, but sealing and positioning difficulty increases
Solution Approach 1:
A rubber ring is used as a flexible sealing element at the bottom of the inlet filter sponge component. This rubber ring can deform to accommodate the opening in the dust cup base cover, providing effective sealing while allowing easy insertion and removal of the filter component. The flexibility of the rubber ring simplifies the sealing structure compared to rigid sealing mechanisms.
Solution Approach 2:
The rubber ring is positioned at the bottom of the inlet filter sponge component, which is the lowest point of the dust cup assembly. This positioning takes advantage of gravity and the natural geometry of the dust cup to simplify sealing and positioning, as the filter component naturally settles into place when inserted.
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
This design effectively filters air entering the motor, prevents secondary pollution, and enhances user convenience by allowing filter replacement without disassembling the dust cup, thus improving motor performance and usability.
Implementation Method 1
A cyclone filter is provided within the dust cup
Implementation Method 2
An inlet filter sponge component and an inlet strainer component around the periphery of the inlet filter sponge component are arranged within the cyclone filter
Implementation Method 3
a rubber ring for sealing and positioning at an inner edge of the opening is provided at the bottom of the inlet filter sponge component
Data Source
AI summary
A handheld vacuum cleaner, mainly comprising a main body and a dust collection accessory, wherein the main body comprises a housing (3) and a dust cup (8), a dust collection pipe (1) is provided on the dust cup, a motor (2), a battery pack (7) and a handle (6) are provided above the dust cup, a cyclone filter (81) is provided within the dust cup, an inlet filter sponge component (9) and an inlet strainer component (10) provided around the periphery of the inlet filter sponge component are arranged within the cyclone filter, a dust cup base cover (85) is provided at the bottom of the dust cup, an opening (851) is provided on the dust cup base cover, and the inlet filter sponge component is directly mounted or removed at the bottom of a dust cup. An inlet filter sponge component of the present invention can be directly withdrawn from the bottom of a dust cup so that a user does not need to disassemble a dust cup when replacing and cleaning, which effectively ensures the performance of a motor and improves user's convenience to the maximum extent as well.