Integrated Suction Conduit in Power Tool Housing
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Solution Overview
Problem
Existing electric power tools with suction extraction systems suffer from visually unattractive and restrictive external hoses or tubes that limit mobility and expose users to dust, requiring separate suction blowers and additional components.
Innovation Solution
A suction extraction system where the suction conduit is integrated within the tool's housing, utilizing an underpressure generated by a motor blower to collect contaminated air internally, eliminating the need for external hoses and separate blowers, and featuring self-closing seals for easy assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an external suction blower is used with hoses or tubes, then dust extraction is achieved, but freedom of movement is restricted and visual appearance deteriorates
Solution Approach 1:
The suction conduit is integrated inside the housing of the electric power tool, merging the dust extraction function with the tool's existing structure. This eliminates external hoses and tubes, resolving the contradiction between dust extraction capability and freedom of movement.
Solution Approach 2:
The suction conduit is nested within the housing structure, utilizing the existing spatial framework of the tool. This nesting approach allows the suction system to be contained within the tool's boundaries, eliminating external components while maintaining functionality.
2Ease of manufacture
If a separate suction blower is integrated into the tool, then dust extraction is achieved, but construction complexity increases and production costs rise
Solution Approach 1:
The motor blower serves dual functions: as the drive motor for the power tool and as the suction blower for dust extraction. This multi-functionality eliminates the need for a separate suction blower, simplifying construction and reducing production costs.
Solution Approach 2:
The motor blower utilizes its own generated underpressure to perform suction extraction, making the system self-sufficient. The same motor that drives the tool also creates the negative pressure needed for dust collection, eliminating the need for additional dedicated components.
3Ease of operation
If the suction conduit is integrated inside the housing, then freedom of movement improves, but sealing requirements increase to protect grease-lubricated gears
Solution Approach 1:
The air stream contaminated with drilling material is extracted and directed through the suction conduit away from the gear chamber. This separation prevents dust from invading the grease-lubricated gears while maintaining the integrated suction system.
Solution Approach 2:
The suction conduit acts as an intermediary channel that captures and removes dust-laden air before it can contaminate the gear chamber. This intermediate extraction path protects the gears while allowing the suction system to remain integrated.
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
Enhances user mobility and safety by containing dust internally, providing a cleaner working environment, and simplifying construction and maintenance by integrating components within the tool's existing spaces.
Implementation Method 1
The suction extraction of the air is preferably done via an underpressure, which is generated in particular by a motor blower located in the housing
Data Source
AI summary
A suction extraction system of an electric power tool has a housing, a cup-shaped part of the housing, a gear-containing chamber, a suction extractor for receiving air contaminated with drilling material, and a suction conduit for extracting the air by suction, the suction extractor being connectable to the electric power tool via a connection element, wherein the suction conduit is located at least partially inside the housing of the electric power tool and is sealed from outside by a self-closing closure.