Suction Device with Integrated Charging for Hand-Held Power Tools

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Solution Overview

Problem

Existing suction devices for hand-held power tools require separate chargers, which are inconvenient, especially in remote or construction site settings, and can be easily forgotten.

Innovation Solution

Integration of a charging device within the suction device that allows for on-site charging of the hand-held power tool's energy storage module, eliminating the need for a separate charger and enabling wireless communication for controlling the suction motor and charging process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a separate charger is used for the hand-held power tool, then the energy storage module can be charged, but the charging process becomes inconvenient and the charger can be easily forgotten

Engineering Contradiction:
Improvecharging convenienceVSAvoidnumber of separate components
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent merges the charging device with the suction device by integrating a holder and charging contacts into the suction device housing. This allows the energy storage module to be charged conveniently at the suction device location without requiring a separate charger, thus improving ease of operation while reducing the number of separate components.

Inventive Principle:
Principle #5Merging (Combining)

2Ease of operation

If the charging device is integrated into the suction device, then charging convenience is improved, but the suction device structure becomes more complex

Engineering Contradiction:
Improvecharging accessibilityVSAvoidsuction device structure
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The suction device is designed with multi-functionality by incorporating both suction functionality and charging functionality into a single device. The holder and charging contacts are integrated into the existing suction device structure, allowing it to serve dual purposes without significantly increasing overall complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If the energy storage module is detachable from the hand-held power tool, then module exchange is enabled, but the charging connection requires additional alignment precision

Engineering Contradiction:
Improvemodule exchangeabilityVSAvoidconnector alignment
Core Design Contradiction:
Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The holder acts as an intermediary component between the energy storage module and the charging contacts. It provides a stable mounting position and guides the module into proper alignment with the charging contacts, thereby enabling easy module exchange while maintaining accurate alignment without requiring high manufacturing precision.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentEP2628428B1Suction device with a charging device
Publication Date: 2019.05.22 FESTOOL GMBH
  • EP2628428B1 patent drawingFigure 1
  • EP2628428B1 patent drawingFigure 2~5
  • EP2628428B1 patent drawingFigure 6~8

AI summary

The suction device (10) has a suction motor (19) which is provided for generating the suction flow (20). A suction housing (11) is provided with the suction motor and dust collecting chamber (15) for collecting separate particles from the suction flow. A loading device is provided for charging an electric energy storage module of hand tool machine (80). The loading device is provided with electrical charging contacts for providing charging voltage for electric energy storage module.