Power Tool Housing Window for Internal Structure Visibility

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Solution Overview

Problem

Existing handheld power tools lack an efficient mechanism to display their internal structure, making maintenance and troubleshooting more challenging.

Innovation Solution

The handheld power tool incorporates a window portion in its main housing, allowing users to observe the internal connection assembly and other components, enhancing visibility and accessibility for maintenance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the main housing is made opaque for protection and aesthetics, then structural integrity and appearance are improved, but visibility of internal structure deteriorates

Engineering Contradiction:

Improvestructural integrityVSAvoidvisibility of internal structure

Core Design Contradiction:

ReliabilityVSLoss of information

Solution Approach 1:

The main housing is segmented into opaque and transparent portions, allowing different sections to serve different functions. The transparent portion enables observation of internal components while the opaque portions maintain structural integrity and aesthetic appearance.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different portions of the main housing have different optical properties. Specifically, the window portion is made transparent while other portions remain opaque, allowing localized visibility without compromising overall structural integrity.

Inventive Principle:

Principle #3Local quality

2Loss of information

If the housing is made completely transparent for visibility, then observation of internal structure is improved, but aesthetic appearance and protection deteriorate

Engineering Contradiction:

Improvevisibility of internal structureVSAvoidaesthetic appearance

Core Design Contradiction:

Loss of informationVSShape

Solution Approach 1:

The housing is divided into transparent and opaque sections, with the transparent window portion providing visibility while the opaque portions maintain aesthetic appearance and protective function.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The window portion is specifically made transparent while other portions of the housing remain opaque, creating a balanced design that provides localized visibility without sacrificing overall aesthetic appearance.

Inventive Principle:

Principle #3Local quality

3Reliability

If the connection assembly is made complex for reliable power transmission, then power transmission reliability is improved, but ease of maintenance deteriorates

Engineering Contradiction:

Improvepower transmission reliabilityVSAvoidease of maintenance

Core Design Contradiction:

ReliabilityVSEase of repair

Solution Approach 1:

The connection assembly is extracted and positioned such that it can be observed through the transparent window portion. This allows users to monitor the connection assembly's operation and maintenance status without disassembling the housing, facilitating easier maintenance while maintaining reliable power transmission.

Inventive Principle:

Principle #2Taking out (Extraction)

Data Source

PatentUS12304051B2Power tool

Publication Date: 2025.05.20 NANJING CHERVON IND

AI summary

A power tool includes a main housing in which a drive mechanism is disposed and a working head connected to an end of the main housing and rotating relative to the main housing about a first axis. The working head includes an output shaft and the output shaft is driven by the drive mechanism to rotate about a second axis. The main housing is provided with a window portion and the window portion is configured to display an internal structure of the power tool.