Chainsaw Case Segmentation for Oil Collection

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Solution Overview

Problem

Chainsaws release lubricating oil during storage and transport, leading to environmental pollution and fouling, and existing cases do not effectively collect or dispose of this oil, nor ensure stable and safe application during these processes.

Innovation Solution

A case with a housing volume for the blade and a separate collection volume for oil, designed to facilitate oil collection and disposal, featuring a liquid conveyor system and locking mechanisms for secure attachment to the blade, allowing for easy oil transfer and containment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the chainsaw is stored in a vertical orientation with the blade at the bottom, then the blade is easily accessible and can be engaged to a support hook, but the lubricating oil released by the blade accumulates inside the case causing fouling and pollution

Engineering Contradiction:
Improveease of storageVSAvoidoil pollution
Core Design Contradiction:
Ease of operationVSObject-generated harmful factors

Solution Approach 1:

The case is divided into two separate chambers: a housing volume for containing the blade and a collection volume for collecting lubricating oil. This segmentation allows the oil to be directed away from the blade housing and collected in a dedicated area, preventing fouling while maintaining easy storage orientation.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

A liquid conveyor system acts as an intermediary between the housing volume and collection volume, directing the lubricating oil from the blade area to the collection area. This intermediary mechanism ensures oil is channeled away from the blade housing, preventing pollution while maintaining the convenient vertical storage orientation.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Device complexity

If a traditional case is used without a collection volume, then the case structure is simple, but the lubricating oil released by the blade causes fouling of the inside of the case and environmental pollution

Engineering Contradiction:
Improvecase structureVSAvoidoil fouling
Core Design Contradiction:
Device complexityVSObject-generated harmful factors

Solution Approach 1:

The case is segmented into a housing volume for the blade and a collection volume for oil, with the collection volume being a distinct separated space. This segmentation adds minimal structural complexity while effectively preventing oil fouling by directing oil to a dedicated collection area rather than allowing it to spread throughout the entire case.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

A liquid conveyor serves as an intermediary component that bridges the housing volume and collection volume, efficiently directing oil with minimal additional structure. This intermediary mechanism prevents fouling while maintaining relatively simple case construction.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Ease of operation

If the case is designed without secure locking means, then the case is easy to apply and remove, but the case can be incorrectly applied and separate from the blade during vertical storage

Engineering Contradiction:
Improveease of applicationVSAvoidcase attachment stability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The locking means are designed to automatically engage when the case is correctly positioned on the blade, providing self-securing functionality. This self-service mechanism ensures reliable attachment during vertical storage without requiring complex manual locking operations, maintaining ease of application while ensuring stability.

Inventive Principle:
Principle #25Self-service

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 case effectively collects and disposes of lubricating oil, reducing environmental impact and ensuring stable, safe storage and transport of chainsaws by preventing oil fouling and ensuring correct application.

Implementation Method 1

said liquid conveyor being configured to convey said liquid from said housing volume to said collection volume

Methodology Applied
Scientific EffectGravity: Gravitation

Data Source

PatentEP4364914A1Case with collection volume
Publication Date: 2024.05.08 STIGA S P A IN BREVE ANCHE ST SPA
  • EP4364914A1 patent drawingFigure 1
  • EP4364914A1 patent drawingFigure 2
  • EP4364914A1 patent drawingFigure 3

AI summary

The invention relates to a case (9) configured to be applied, for the purposes of containment and/or protection, to a blade (8) of a chainsaw (7). The case (9) delimits a housing volume (28) of the blade (8) therein, the housing volume (28) extending along a longitudinal axis (V) coinciding with the main extension direction of the blade (8) when the blade (8) is arranged in the housing volume (28). According to the invention, the case (9) further delimits a collection volume (29) of lubricating and/or protective oil therein, possibly released by the blade (8) during a storage or transport step of the chainsaw (7), the collection volume (29) being in communication with the housing volume (28). The invention further relates to a method for the disposal of lubricating and/or protective oil, possibly released by a blade (8) of a chainsaw (7) during a storage or transport step of the chainsaw (7).