Rotating Bit Magazine Housing With Inspection Opening Access

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Solution Overview

Problem

Hand-held power tools lack user convenience in selecting the appropriate insert tool for fastening elements, as existing designs do not provide a straightforward method for users to test and align tools efficiently.

Innovation Solution

A hand-held power tool with a housing featuring a test opening that exposes insert tool chambers, allowing users to select and align the appropriate insert tool for fastening elements, combined with a rotatable insert tool magazine and a gear unit for precise tool operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the insert tool magazine is enclosed within the housing without inspection openings, then the housing provides complete protection and a streamlined appearance, but the user cannot easily see or test insert tools without disassembling the tool

Engineering Contradiction:
Improveease of tool selectionVSAvoidhousing structure
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The housing is segmented with inspection openings that provide visual access to the insert tool magazine without requiring full disassembly. This allows users to view and test insert tools through dedicated openings while maintaining the overall enclosed protective structure of the housing.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The inspection opening acts as an intermediary element between the user and the insert tools. It provides a controlled access point that allows visual inspection and testing of tools without compromising the sealed protective housing structure.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Productivity

If the user must disassemble the tool to access insert tools for testing, then the housing remains fully enclosed and protected, but the operation becomes time-consuming and complex

Engineering Contradiction:
Improvetool selection speedVSAvoidease of tool testing
Core Design Contradiction:
ProductivityVSEase of operation

Solution Approach 1:

The inspection opening is pre-configured in the housing to provide immediate visual access to the insert tools. Users can perform preliminary inspection and testing of tools without disassembly, enabling faster tool selection and reducing operational time.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The inspection opening extracts the function of visual access from the enclosed housing structure. By creating a dedicated viewing port, the system separates the protection function (enclosed housing) from the access function (inspection opening), allowing both to coexist without compromise.

Inventive Principle:
Principle #2Taking out (Extraction)

3Adaptability or versatility

If multiple inspection openings are added to expose all insert tool chambers, then the user can easily access and test any insert tool, but the housing structure becomes more complex and less protective

Engineering Contradiction:
Improveaccess to all insert toolsVSAvoidhousing with multiple openings
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

Instead of providing universal access through multiple openings, the housing incorporates localized inspection openings positioned to expose specific insert tool chambers. This allows targeted access to individual tools or groups of tools while maintaining the integrity and simplicity of the overall housing structure.

Inventive Principle:
Principle #3Local quality

Data Source

PatentEP4389359A1Hand-held machine tool
Publication Date: 2024.06.26 ROBERT BOSCH GMBH
  • EP4389359A1 patent drawingFigure 1
  • EP4389359A1 patent drawingFigure 2
  • EP4389359A1 patent drawingFigure 3

AI summary

A hand-held power tool (100), in particular a screwdriver, is disclosed, comprising a housing (110), a tool magazine (200) having a plurality of tool chambers (210) for each receiving a tool (140) and rotatably arranged in the housing (110), and a tool holder (150) for a rotatable drive of at least one of the tools (140), wherein the tool holder (150) is rotatably arranged in a tool holder opening (300) of the housing (110). It is proposed that the housing (110) has at least one inspection opening (310) configured to release at least one of the tool chambers (210).