Safety Switch Cap Layout for Multi-Angle Signal Visibility
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Solution Overview
Problem
Existing safety switches for industrial machines and plants have limitations in making the reading of luminous signals immediate and unmistakable, often requiring operators to be positioned directly in front of the switch, and they lack customization options for signal lights.
Innovation Solution
A safety switch design featuring a switching device with a transparent or translucent cap that encloses light sources, allowing visibility from multiple sides, and enabling customization of signal lights through various combinations and colors, thus facilitating clear and immediate status reading from different angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If small indicator lights are arranged on the front face of the housing, then the switch structure remains compact, but the reading of the lights requires the operator to be positioned near the switch with eyes precisely in correspondence with the lights
Solution Approach 1:
The patent applies this principle by transitioning from a single-front viewing dimension to a multi-dimensional viewing capability. The signal lights are arranged on the transparent or translucent cap that allows visibility from multiple sides (front, sides, and top), enabling operators to read the signals from various positions without requiring precise frontal alignment with the switch.
2Loss of information
If a button is made fully illuminated to indicate system status, then the status is clearly visible, but the number and type of information that can be provided to the operator is limited
Solution Approach 1:
The patent applies this principle by dividing the signaling function into multiple separate signal lights (first signal light, second signal light, third signal light) with different colors and positions on the transparent cap, rather than using a single illuminated button. Each signal light can independently indicate different circuit statuses or system conditions, thereby providing comprehensive information without requiring a complex single-element solution.
3Adaptability or versatility
If multiple signal lights with different colors and positions are used, then customizable signaling is achieved, but the housing structure becomes more complex
Solution Approach 1:
The patent applies this principle by designing the transparent or translucent cap to serve multiple functions simultaneously: it acts as a structural housing element, a mounting surface for multiple signal lights, and an optical element that enables visibility from multiple directions. This multi-functionality allows customizable signaling configurations without proportionally increasing overall device complexity, as the cap integrates several roles into 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 allows operators to quickly and safely read the status of power and signaling circuits from any side, enhancing safety and efficiency by providing customizable and easily interpretable light signals.
Implementation Method 1
a portion or cap (6) in transparent or translucent material which encloses at least part of said signaling means and in particular one or more indicator lights or sources of light signals which are thus visible, at least in the powered condition, through said portion or cap (6)
Data Source
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AI summary
A safety switch for guarding access to industrial machines and plants comprises a switching device (2) provide with first anchoring means (9) to a fixed part of the access to be guarded, a driving device (3) adapted to be anchored to the movable part of the access and to interact with the switching means upon the opening/closing the access for opening/closing one or more circuits, signaling means comprising one or more sources of light signals adapted to emit one or more light and/or visible signals representative of the state of said one or more circuits and wherein the switching device (2) has at least one portion or cap (6) made of a transparent or translucent material which encloses one or more of sources of light signals to make them visible from the outside at least in the powered condition.