Dust extractor
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Solution Overview
Problem
Existing dust extractors do not effectively discharge static electricity that accumulates on structural members other than the tank, potentially causing discomfort to users.
Innovation Solution
A dust extractor design that includes a head with a top cover, a tank with a grounded first electrically conductive member, and a tank cover with a second electrically conductive member connected to the first, allowing for safe discharge of static electricity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If only the tank is provided with a grounding structure, then the tank's static electricity is discharged, but static electricity accumulates on other structural members like the tank cover causing user discomfort
Solution Approach 1:
The grounding structure is segmented into multiple independent grounding members: a first grounding member on the tank and a second grounding member on the tank cover. Each grounding member independently discharges static electricity from its respective component, ensuring comprehensive coverage of all structural members that may accumulate static charge during operation.
Solution Approach 2:
The grounding system is designed with universal applicability across multiple components. Both the tank and tank cover are equipped with grounding capabilities, making the system universally effective at preventing static electricity accumulation on any structural member that users may contact during operation.
2Object-affected harmful factors
If multiple grounding members are added to discharge static electricity on all structural members, then user comfort is improved, but the device complexity increases
Solution Approach 1:
The grounding structure is divided into simple, modular grounding members that can be independently installed on different components. Each grounding member is a simple conductive element connected to ground, avoiding complex wiring or control systems while achieving comprehensive static electricity discharge across multiple structural members.
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 design safely discharges static electricity accumulated on the dust extractor, preventing user discomfort and ensuring effective static electricity management.
Implementation Method 1
a first electrically conductive member mounted on the tank; a second electrically conductive member mounted on the tank cover
Implementation Method 2
The first electrically conductive member may be grounded. The second electrically conductive member may be connected to the first electrically conductive member.
Data Source
AI summary
A dust extractor (1) includes: a head (2) having a top cover (13); a tank (3) disposed below the head and on which a first electrically conductive member (41) is mounted; a tank cover (4) disposed between the head and the tank and having a cover part (16) covering an opening (3F) in an upper-end portion of the tank and a suction tube (17) into which a dust-extracting hose (6) is insertable, and on which a second electrically conductive member (42) is mounted; and a suction unit (7) that includes a motor (24) and a blower fan (25) that is rotated by a rotational force generated by the motor, and that generates a suction force in the suction tube. The first electrically conductive member is grounded. The second electrically conductive member is electrically connected to the first electrically conductive member.