Multi-Trigger Pressing Structure With Induction Coil and Thin Profile
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Solution Overview
Problem
Current pressing devices are limited in their triggering methods, primarily relying on button presses, and there is a need for diverse and innovative ways to activate them.
Innovation Solution
A pressing device incorporating an induction coil that generates induced current when a movable shaft body is pressed, utilizing magnetic or light-based sensors for additional triggering mechanisms, and designed to reduce overall height for thin models.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional button press mechanism is used, then the device structure is simple, but the triggering method is limited
Solution Approach 1:
The pressing device incorporates multiple triggering mechanisms including a button press switch, induction coil with magnet, and light sensor system. This allows the device to respond to multiple types of input (mechanical pressing, magnetic induction, light interruption) making it versatile while maintaining a relatively integrated structure that doesn't excessively increase complexity
2Length of moving object
If the hollow shaft base penetrates the through hole of the circuit board, then the device height is reduced, but the assembly precision requirement increases
Solution Approach 1:
The hollow shaft base is designed to penetrate through the circuit board's through hole, with the induction coil positioned within the hollow shaft base and the magnet attached to the movable shaft body. This nested arrangement allows components to be space-efficiently organized, reducing overall device height while the through-hole design provides natural alignment features that help manage assembly precision requirements
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
Provides multiple triggering options and reduces device height, enhancing usability and compatibility with thinner designs.
Implementation Method 1
the induction member passes through the through hole, causing the induction coil to produce changes of induced current
Implementation Method 2
the magnet passes through the through hole, and moves close to or away from the magnetic sensor
Implementation Method 3
the light emitter and light receiver are disposed on the second surface and are positioned on two sides of the two flap portions. When the movable shaft body is not pressed down, light emitted by the light emitter is received by the light receiver via the light path
Implementation Method 4
when the movable shaft body is pressed down, the induction member is located in the light path, and the light emitted by the light emitter is blocked by the induction member
Data Source
AI summary
A pressing device includes a circuit board, a shaft lower cover, a shaft upper cover, and a movable shaft body. The circuit board includes first and second surfaces, a through hole penetrating the surfaces, and an induction coil surrounding the hole. The shaft lower cover includes a lower cover base disposed on the first surface. The shaft upper cover on the lower base includes an opening. The movable shaft body is movably disposed between the shaft upper and lower covers, and includes a movable base partially protruding from an opening and a columnar shaft is connected to an induction member. When the movable shaft body is pressed down, the columnar shaft extends into the hollow shaft base, and the induction member passes through the through hole, causing the induction coil to produce changes of induced current.