Sewing Machine Switch Device With Programmable Logic
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Solution Overview
Problem
Existing sewing machine control systems are not ergonomically designed for quick function activation/deactivation, particularly due to the distance of the control panel from the sewing area and the complexity of mechanical actuation methods, which hinders efficient operation and assembly.
Innovation Solution
A switch device with programmable logic allows electronic data communication between function keys and a variable actuating element, eliminating the need for mechanical contact switches and reducing assembly complexity by using a microcontroller to assign machine functions and control LED indicators for user-friendly operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a control panel with many settings is used, then comprehensive machine control is achieved, but the control panel becomes confusing and less suitable for quick operation
Solution Approach 1:
The control system is segmented into two parts: a comprehensive control panel for detailed settings and a simplified switch device with function keys for quick operation. The switch device contains a plurality of function keys that can be actuated to activate/deactivate machine functions, separating quick-access controls from the full control interface.
Solution Approach 2:
The switch device acts as an intermediary between the operator and the complex control panel. It provides a simplified interface that mediates access to machine functions, allowing quick activation/deactivation without requiring the operator to navigate the full control panel during sewing operations.
2Adaptability or versatility
If a mechanical lever with pivoting movement is used to assign functions, then variable function assignment is achieved, but the handling requires plugging or turning actuation of screws which is not ergonomically optimal
Solution Approach 1:
The mechanical lever system with pivoting movement and physical contacts is replaced with an electronic switch device. The function keys electronically assign and activate machine functions without requiring mechanical movement, plugging, or turning of components during operation.
Solution Approach 2:
The switch device maintains function assignments electronically without requiring manual mechanical adjustment during operation. The system serves itself by retaining programmed function assignments, eliminating the need for continuous mechanical repositioning or screw adjustment during sewing.
3Reliability
If a lever switch with electrical contacts is used, then function activation is achieved, but the assembly requires comparatively high effort due to multiple lines and mechanical components
Solution Approach 1:
The mechanical lever switch with physical electrical contacts is replaced with an electronic switching system. The switch device uses electronic circuits and programmable logic to activate functions, eliminating the need for mechanical levers, physical contact closing, and extensive wiring during assembly.
Solution Approach 2:
The electronic switch device provides universal function activation capability through programmable function keys. A single electronic circuit can handle multiple machine functions through software configuration, replacing the need for separate mechanical switches and wiring for each function.
Data Source
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AI summary
The invention relates to a sewing machine with a switching device which has multiple function keys which can be activated, by means of which machine functions of the sewing machine can be activated and/or deactivated, wherein an actuation element is provided which is variable with regard to the activation and/or deactivation function thereof and on which at least one function of the function keys can be placed and removed. The invention makes possible a simpler operation in the use of the switching device. In addition, a greater variability in the optimal operating arrangement of the functionally variable actuation element should result. For this purpose, the invention proposes that a device for the recording of program logic be arranged between the function keys and the at least one actuation element, and said device communicates not only with the actuation element but also with the function keys and assigns to at least one actuation element one or more machine functions, by means of program logic, in accordance with actuation events of the function keys.