Elastic Protective Cover for Machine Tool Control PCB Sealing
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Solution Overview
Problem
Machine tool components, particularly operating devices, are prone to damage and failure due to exposure to harsh and dirty environments, such as dust and mud, leading to operational issues.
Innovation Solution
The operating device for machine tools, including a circuit board with a microcontroller and switching elements, is enclosed by a transparent, elastic protective cover that allows operation through the cover, with integrated light sources and light guides to ensure visibility and tactile elements for user interaction, and features like raised sections for alignment and retention to secure the device within the machine tool housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the operating device is enclosed by a protective cover, then protection against dirt and liquids is improved, but ease of operation deteriorates
Solution Approach 1:
The protective cover is made of elastic material that allows switching elements to be operated through the cover by applying force, while still providing complete enclosure and protection against dirt and liquids
Solution Approach 2:
The elastic protective cover acts as an intermediary between the user and the switching elements, transmitting operational force while maintaining the sealed enclosure
2Reliability
If the circuit board is completely enclosed by a protective cover, then reliability is improved, but light visibility deteriorates
Solution Approach 1:
The protective cover is made of transparent elastic material that allows light from the light source to pass through while maintaining complete enclosure and protection
Solution Approach 2:
The protective cover combines transparency for light transmission with elasticity for operational capability and protection against contaminants
3Ease of operation
If tactile elements are added to the protective cover, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The tactile elements are integrated directly into the protective cover structure, combining the protective function with the operational interface function in a single component
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 solution provides enhanced protection against dirt and liquids, maintains operational visibility and ease of use, and ensures secure mounting of the operating device within the machine tool, thereby reducing failure risks and improving durability.
Implementation Method 1
The protective cover (14) is made of an elastic material that allows the switching elements (10a, 10b, 10c) to be operated through the protective cover (14)
Implementation Method 2
The protective cover (14) is made of a transparent material that allows light from the light source (11) to shine through the protective cover (14)
Implementation Method 3
The light guide element (16) may contain at least one lens for focusing or diffusing the light from the light source
Data Source
Figure 1
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AI summary
Operating device for a machine tool, in particular for a grinding device, comprising a printed circuit board with a microcontroller, at least one switching element and a connection device. The printed circuit board is completely enclosed by a transparent, elastic protective cover, wherein the at least one switching element is positioned on a top surface of the printed circuit board and the protective cover is designed such that the switching element can be operated by applying force to the protective cover.