Transparent Pushbutton Switch With Through-Support Optical Sensing
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Solution Overview
Problem
The existing pushbutton switches in amusement machines, when integrated with a transparent material, are prone to fractures due to the structural weakness caused by the attachment opening, which compromises the strength of the transparent material.
Innovation Solution
A pushbutton switch design where the operable portion and detector are attached to different surfaces of a transparent support, with the detector using reflective sensors to detect the pressed state through the transparent area, eliminating the need for an opening in the support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the pushbutton switch is received in an attachment opening in the transparent material, then the pushbutton switch can be integrated with the transparent support, but the strength of the transparent material is lowered and fractures may occur
Solution Approach 1:
The patent transitions from a two-dimensional attachment (opening in the same plane) to a three-dimensional arrangement by placing the detector on the opposite side of the transparent support. This dimensional change allows the pushbutton switch to be integrated without compromising the integrity of the transparent material, as the detector can sense through the transparent support from the other side.
2Ease of manufacture
If an attachment opening is created in the transparent material, then the pushbutton switch can be mounted, but cracks may extend from the opening causing fracture
Solution Approach 1:
The patent replaces the mechanical attachment system (which requires physical openings and fasteners) with an optical sensing system. The detector uses optical fields to sense the pressed state through the transparent support, eliminating the need for mechanical connections that would create stress concentration points and potential crack initiation sites.
3Device complexity
If the detector is placed on the same side as the operable portion, then the structure is simpler, but the transparent material must have openings that reduce its strength
Solution Approach 1:
The patent resolves this contradiction by utilizing the third dimension (depth/thickness of the transparent support) to separate the detector from the operable portion. The detector is positioned on the opposite side of the transparent support, allowing it to sense through the material without requiring openings, thus maintaining both structural integrity and functional simplicity.
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
This design prevents fractures in the transparent support by eliminating the need for an attachment opening, enhances attachment flexibility, and allows for a wider choice of sensors, while maintaining the transparency and ease of maintenance.
Implementation Method 1
a sensor that detects a pressed state of the press portion through the transparent area
Data Source
AI summary
An amusement machine includes a button deck. The button deck includes a transparent support and a display together serving as a touchscreen, and a pushbutton switch. The pushbutton switch includes an operable portion attached to a first surface of the transparent support, and a detector attached to a second surface of the transparent support and facing the operable portion. The operable portion includes a button. The detector includes a reflective sensor that detects a pressed state of the button through the transparent support.