Motorized Tool Data Device Vibration Resilience

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Solution Overview

Problem

Existing devices for acquiring operating data from motor-driven tools face challenges in providing a reliable and vibration-resistant solution for collecting and transmitting data, particularly under strong vibrations or accelerations, which can lead to interruptions in the electrical energy supply.

Innovation Solution

A device with a detection and evaluation unit, memory, communication interface, and an elastic element is integrated into the tool, allowing for automatic data acquisition and transmission while securing the energy store through a compressive force greater than the acceleration force, ensuring uninterrupted energy supply and vibration resistance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the electrical energy store is loosely fitted in the housing to allow easy insertion and removal, then the ease of operation is improved, but the reliability of electrical energy supply deteriorates under strong vibrations or accelerations

Engineering Contradiction:

Improveease of insertion and removal of energy storeVSAvoidreliability of electrical energy supply

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The housing is divided into a first housing part and a second housing part that can be separated, allowing the energy store to be easily inserted and removed. This segmentation enables easy operation while the elastic element provides securing force when assembled.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

An elastic element is introduced between the energy store and the housing to provide beforehand cushioning. This elastic element applies a securing force that prevents movement of the energy store under vibrations or accelerations, ensuring reliable electrical contact while maintaining easy insertion and removal when the housing is open.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

2Reliability

If the electrical energy store is tightly secured in the housing to prevent movement under vibrations, then the reliability is improved, but the ease of operation deteriorates

Engineering Contradiction:

Improvereliability of electrical energy supplyVSAvoidease of insertion and removal of energy store

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The housing is segmented into separable parts that can be easily opened and closed. This allows the energy store to be loosely fitted for easy insertion while the elastic element provides tight securing when the housing is closed, resolving the contradiction between ease of operation and reliability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The elastic element provides beforehand cushioning by applying a securing force that prevents energy store movement under vibrations. This enables reliable electrical contact while the segmented housing design maintains ease of insertion and removal.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

3Reliability

If the device is designed to be vibration-resistant to prevent interruptions in energy supply, then the reliability is improved, but the device complexity increases

Engineering Contradiction:

Improvereliability of data acquisitionVSAvoidcomplexity of housing structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

A single elastic element is introduced to provide beforehand cushioning against vibrations and accelerations. This simple addition secures the energy store and prevents interruptions in electrical supply, improving reliability without significantly increasing device complexity.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Solution Approach 2:

The elastic element acts as a flexible component that adapts to vibrations and accelerations, providing vibration resistance through its elastic properties rather than through complex rigid structures, thus maintaining simplicity while improving reliability.

Inventive Principle:

Principle #30Flexible shells and thin films

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 device effectively records and transmits operating data from motor-driven tools, maintaining an uninterrupted electrical supply even under high vibrations or accelerations, preventing movement of the energy store and ensuring reliable data acquisition and transmission.

Implementation Method 1

The at least one elastic element is designed to fix the accommodated electrical energy store in the closed state of the housing by applying pressure with a force along the insertion and removal direction

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentEP3534339B1Device for detecting operating data of a motorised tool and system

Publication Date: 2022.01.26 ANDREAS STIHL AG & CO KG

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AI summary

The invention relates to a device for recording operating data of a motor-driven tool and a system comprising such a device and a motor-driven tool.