Battery-Mounted Tool Container for Fast Attachment Access

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Solution Overview

Problem

Existing solutions for storing and accessing tool attachments with power tools are inconvenient, as they are often not immediately accessible when needed, requiring retrieval from separate boxes, which disrupts workflow.

Innovation Solution

A detachable container is designed to attach mechanically to the battery of a hand tool, utilizing a combination of positive-locking and friction-locking connections, allowing quick and tool-free attachment and positioning on the battery, ensuring easy access and rapid tool changes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If tools are carried in a trouser pocket or kept in a separate box, then tools can be stored, but they are not immediately accessible when needed, requiring retrieval from separate boxes which disrupts workflow

Engineering Contradiction:
ImproveAccessibility of toolsVSAvoidTime to retrieve tools
Core Design Contradiction:
Ease of operationVSLoss of time

Solution Approach 1:

The container is merged with the battery by attaching it to the battery housing, creating an integrated storage system. This combining of the container and battery eliminates the need for separate tool storage boxes, making tools immediately accessible while maintaining organized storage capacity.

Inventive Principle:
Principle #5Merging (Combining)

2Ease of operation

If a container is attached to the battery, then tools become readily accessible, but the attachment mechanism adds complexity to the battery design

Engineering Contradiction:
ImproveAccessibility of toolsVSAvoidBattery structure
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The mounting section uses a dynamic attachment mechanism with friction-fit connections and snap-fit elements that allow the container to be easily attached and detached. This dynamic design provides secure holding during use while enabling quick removal when needed, adapting to different work situations without permanent modification to the battery.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The battery system is segmented into separate functional components: the battery itself and the attachable container. This segmentation allows the container to be added or removed based on specific work requirements, maintaining battery simplicity when the container is not needed while providing extended functionality when required.

Inventive Principle:
Principle #1Segmentation

3Reliability

If the container is made secure to the battery, then tools remain stable during use, but the attachment mechanism becomes more complex requiring additional components

Engineering Contradiction:
ImproveStability of container attachmentVSAvoidAttachment mechanism
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The mounting section employs a dynamic friction-fit connection system where the side walls of the container engage with corresponding features on the battery through controlled friction. This provides reliable stability during tool use while allowing easy attachment and detachment without complex locking mechanisms or additional components.

Inventive Principle:
Principle #15Dynamics

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 container remains within easy reach, facilitating rapid tool changes without affecting the tool's handling, providing a small, lightweight, and organized storage solution that keeps tools accessible and tidy.

Implementation Method 1

the two side wall sections are designed for a friction-fit connection with the battery when the container is attached to the battery

Methodology Applied
Scientific EffectFriction: Friction

Implementation Method 2

The mounting section can have at least one rib for engaging with a groove or shoulder on the battery. This engagement creates a positive connection that helps to securely hold the container to the battery.

Methodology Applied
Scientific EffectMechanical Fastening: Mechanical Fastener

Data Source

PatentEP4667163A1Container, rechargeable battery and rechargeable battery-operated hand tool
Publication Date: 2025.12.24 MAFELL AG
  • EP4667163A1 patent drawingFigure 1~2
  • EP4667163A1 patent drawingFigure 3~4
  • EP4667163A1 patent drawing

AI summary

A container for detachable attachment to a battery of a hand tool has a fastening section for detachable mechanical attachment of the container to the battery.