Power Tool Suction-Driven Feed to Eliminate Drill Stand Complexity

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Solution Overview

Problem

The use of auto-feed devices in power tools for drilling is cumbersome and requires a drill stand, making the process complex and prone to errors, and conventional suction devices only manage dust or dust-water mixtures without assisting the drilling process.

Innovation Solution

A system comprising a power tool and a suction device that uses negative pressure to drive the tool into a substrate, eliminating the need for an auto-feed device and enhancing drilling efficiency by controlling suction power based on drilling performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Extent of automation

If an auto-feed device is used to drive the power tool into the substrate, then drilling automation is improved, but device complexity increases and requires a drill stand

Engineering Contradiction:
Improvedrilling automationVSAvoidsystem complexity
Core Design Contradiction:
Extent of automationVSDevice complexity

Solution Approach 1:

The patent combines the suction device (originally used only for dust extraction) with the feeding function by utilizing the vacuum pressure to directly drive the drill bit into the substrate. This merging eliminates the need for separate auto-feed devices and drill stands, reducing system complexity while maintaining automation capability.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The suction device is given dual functionality: it continues to extract dust and debris while simultaneously providing the negative pressure needed to feed the drill bit into the substrate. This multi-functionality eliminates the need for dedicated feeding mechanisms, simplifying the overall system.

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

2Stability of the object's composition

If a drill stand is used to support the power tool, then positioning stability is improved, but ease of operation deteriorates due to cumbersome setup

Engineering Contradiction:
Improvepositioning stabilityVSAvoidsetup ease
Core Design Contradiction:
Stability of the object's compositionVSEase of operation

Solution Approach 1:

The patent extracts the feeding function from the drill stand system and transfers it to the suction device. This eliminates the need for drill stands and their complex setup procedures, while the suction device provides both stabilization and feeding through its vacuum pressure application.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The suction device serves dual purposes: it removes dust while simultaneously providing the negative pressure needed to press the tool against the substrate and drive it forward. The system uses its own operational byproduct (vacuum pressure) to accomplish the feeding function, eliminating external support structures.

Inventive Principle:
Principle #25Self-service

3Object-generated harmful factors

If conventional suction devices are used, then dust removal is improved, but drilling assistance is lost as they only handle dust extraction

Engineering Contradiction:
Improvedust removalVSAvoiddrilling efficiency
Core Design Contradiction:
Object-generated harmful factorsVSProductivity

Solution Approach 1:

The suction device is enhanced to perform both dust extraction and drilling assistance functions. The negative pressure generated for dust removal is also utilized to press the drill bit against the substrate and feed it forward, transforming a single-function device into a multi-functional tool that directly contributes to drilling productivity.

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

Solution Approach 2:

The patent converts the negative pressure (vacuum), which is inherently a suction force meant for dust removal, into a beneficial feeding force that drives the drill bit into the substrate. The same vacuum pressure that removes dust also provides the mechanical force needed for drilling advancement, turning a byproduct into a useful function.

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

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 system simplifies drilling by reducing user effort, achieving optimal drilling performance with minimal physical strength requirements and adapting suction power for various drilling conditions, applicable to both hand-held and column-guided applications.

Implementation Method 1

a negative pressure produced by a suction device can be used to drive the power tool or a tool of the power tool into a wall or into a substrate

Methodology Applied
Scientific EffectNegative pressure: Vacuum

Implementation Method 2

The negative pressure may also be used to press the power tool against the substrate in such a way that a user only has to exert a small amount of force to keep the power tool in a working position

Methodology Applied
Scientific EffectNegative pressure: Vacuum

Data Source

PatentUS12185897B2System and method for driving a power tool into a substrate using a negative pressure produced by a suction device
Publication Date: 2025.01.07 HILTI AG
  • US12185897B2 patent drawing
  • US12185897B2 patent drawing
  • US12185897B2 patent drawing

AI summary

A system includes a power tool and a suction device that is connected to the power tool via a suction hose. The power tool is drivable into a wall or into a substrate by a negative pressure produced by the suction device. A method includes driving the power tool into the wall or into the substrate by using the negative pressure produced by the suction device that is connected to the power tool via the suction hose.