Vacuum Suction Head With Auto-Decoupling for Drilling Dust Adhesion
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Solution Overview
Problem
Existing suction attachments for vacuum cleaners require manual decoupling from negative pressure, which can lead to incorrect operation and reduced adhesion on non-smooth surfaces, especially when used with less powerful suction fans.
Innovation Solution
A suction attachment design that automatically decouples and couples from the vacuum cleaner's negative pressure when placed on or removed from a surface, utilizing a closure flap and spring bias for secure adhesion, allowing use with less powerful suction fans and eliminating the need for external hoses or cables.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the suction nozzle remains connected to negative pressure, then the suction attachment can be easily removed from the surface, but the adhesion to non-smooth surfaces deteriorates
Solution Approach 1:
The suction line section is designed to dynamically change its connection state to the suction nozzle based on the attachment's position. When the attachment is on the surface, the suction line automatically decouples from the nozzle to maintain adhesion. When removed, it automatically recouples to enable easy detachment without manual intervention.
2Ease of operation
If manual decoupling is required, then the user has control over suction pressure, but incorrect operation occurs and setup effort increases
Solution Approach 1:
The suction line automatically performs the decoupling and recoupling actions based on the attachment's position relative to the surface. The system self-regulates the suction pressure without requiring user intervention, eliminating incorrect operation while reducing operational complexity.
Solution Approach 2:
The system uses the attachment's position on the surface as feedback to automatically control the suction line's connection state. When the attachment is detected to be on the surface, the suction line decouples; when removed, it recouples, creating an automatic feedback-controlled system.
3Reliability
If a powerful suction fan is used, then adhesion to the surface is improved, but the vacuum cleaner becomes less adaptable to battery operation
Solution Approach 1:
The dynamic decoupling of the suction line from the suction nozzle when the attachment is on the surface allows the system to achieve strong adhesion without requiring continuous high-power suction. This enables battery-operated vacuum cleaners with limited power capacity to maintain reliable adhesion throughout the drilling process.
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
Ensures secure adhesion to non-smooth surfaces and reduces setup effort by automatically managing suction pressure, enabling efficient use with battery-operated vacuum cleaners for drilling dust collection without the need for external power or hoses.
Implementation Method 1
The suction airflow or negative pressure, which serves both for extraction and for attaching the suction attachment to the surface
Implementation Method 2
A suction attachment design that automatically decouples and couples from the vacuum cleaner's negative pressure when placed on or removed from a surface, utilizing a closure flap and spring bias for secure adhesion
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The vacuum cleaner (1) has a suction unit (12) that is provided with a suction port (19). A through opening (20) for a drill is formed in the suction port. The suction port is separated from suction region (22) on the wall surface of suction mount and the suction port is decoupled from suction unit through negative pressure. A rechargeable battery is held in drilling dust suction chamber (18) and detention suction chamber (33). A suction line (25) of the suction port is lead to flow opening (24).