Modular Angle Grinder Shield Assembly for Cutting and Grinding
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Solution Overview
Problem
Existing angle grinders require inconvenient shield replacements for cutting and grinding operations due to different protective structures for grinding and cutting discs, and suffer from high wear and tear from flying sparks and particles.
Innovation Solution
A modular shield assembly for angle grinders, comprising a first shield and a second shield that can be detachably connected, with a connector and mounting element that provide elastic support and wear resistance, allowing for adaptable protection during both cutting and grinding tasks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate protective shields are provided for cutting and grinding operations, then protection reliability is improved, but device complexity and ease of operation deteriorate due to requiring multiple shields and manual replacement
Solution Approach 1:
The protective shield is divided into a first shield portion and a second shield portion that can be selectively positioned. The first shield portion provides protection for grinding operations, while the second shield portion provides protection for cutting operations. This segmentation allows a single shield assembly to provide both types of protection without requiring separate shields for each operation.
Solution Approach 2:
The shield assembly incorporates a movable or selectable mechanism that allows the user to dynamically switch between the first shield portion and the second shield portion based on the operation type. This dynamic configuration enables the shield to adapt to different operational requirements (cutting vs. grinding) without requiring complete shield replacement.
2Reliability
If separate protective shields are provided for cutting and grinding operations, then protection reliability is improved, but ease of operation worsens due to requiring manual shield replacement
Solution Approach 1:
The first shield portion and second shield portion are merged into a single integrated shield assembly that can be installed once and then configured for different operations by selecting or positioning the appropriate portion. This merging eliminates the need to remove and replace entire shields when switching between cutting and grinding operations.
Solution Approach 2:
The shield assembly incorporates a movable or selectable mechanism that allows the user to dynamically switch between the first shield portion and the second shield portion based on the operation type. This dynamic configuration enables the shield to adapt to different operational requirements (cutting vs. grinding) without requiring complete shield replacement.
3Ease of manufacture
If traditional shield structures are used, then manufacturing simplicity is maintained, but reliability worsens due to high wear and tear from flying sparks and particles
Solution Approach 1:
The shield assembly is constructed using composite materials that combine the benefits of different materials. The first shield portion and second shield portion may use different materials or material compositions optimized for their specific functions, providing enhanced resistance to wear and tear from sparks and particles while maintaining manufacturing feasibility.
Solution Approach 2:
Different portions of the shield assembly have different material properties or structural characteristics tailored to their specific functional requirements. The first shield portion may have properties optimized for grinding protection, while the second shield portion has properties optimized for cutting protection, allowing each portion to resist the specific wear and tear it encounters.
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 modular shield assembly ensures convenient operation by allowing for easy switching between cutting and grinding modes while reducing wear and tear from sparks and particles, enhancing protection and extending the lifespan of the shields.
Implementation Method 1
the mounting element at least partially inclines toward the first axis and is elastic
Data Source
AI summary
An angle grinder includes a housing, an output shaft at least partially extending out of the housing and being rotatable about a first axis relative to the housing, a sleeve fixedly connected to the housing, a first shield surrounding the output shaft and detachably connected to the sleeve, a second shield surrounding at least a part of the first shield and detachably connected to the first shield, and a connector configured for connecting the second shield to the first shield. The second shield is formed or connected with a mounting element for cooperating with the connector, and the connector and the mounting element are separately formed.