Omnidirectional Touchpad Press Linkage for Reliable Switch Activation
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Solution Overview
Problem
Existing omnidirectional touchpad press devices fail to activate the resilient switch effectively when the support seat of the circuit board is pressed, preventing proper rotation and signal activation.
Innovation Solution
The omnidirectional touchpad press device incorporates a support unit, a touch unit, and a transmission unit with positioning plates, peripheral plates, linking plates, and hinge ribs, allowing the touch unit to be pressed at various locations, which pivots the linking plates and triggers the touch switch through a pressing plate and preload pad, enabling activation of the touch switch from any point.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the support seat of the circuit board is pressed, then the circuit board cannot be rotated relative to the lateral side of the base plate, but the resilient switch cannot be activated
Solution Approach 1:
The base plate is divided into a fixed portion and a rotatable portion that can move independently. The rotatable portion includes the support seat and is connected to the fixed portion via a pivot connection, allowing it to rotate when pressed while the fixed portion remains stable. This segmentation enables the support seat to rotate and activate the resilient switch even when the circuit board is pressed.
Solution Approach 2:
A trigger portion is introduced as an intermediary element between the support seat and the resilient switch. The trigger portion is connected to the rotatable support seat and transmits the rotational motion to the resilient switch, enabling reliable switch activation while allowing the support seat to rotate independently of the circuit board.
2Adaptability or versatility
If the touchpad press device uses a fixed support seat structure, then the structure is simple, but pressing at locations other than the designated area cannot activate the switch
Solution Approach 1:
The support seat is designed as a rotatable component connected to the base plate via a pivot connection, transforming it from a fixed static structure to a dynamic one that can rotate in response to pressing forces. This dynamic design allows the support seat to respond to presses at various locations by rotating appropriately, enabling versatile pressing locations while maintaining a relatively simple overall structure.
Solution Approach 2:
The rotatable support seat structure serves multiple functions: it acts as a mounting platform for the circuit board, a rotational actuator for the resilient switch, and a force transmission mechanism for various pressing locations. This multi-functionality allows a single structure to handle diverse pressing scenarios without requiring separate mechanisms for each location.
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 allows for the activation of the touch switch from any point on the touch unit, ensuring reliable signal transmission and improved usability by allowing flexible pressing locations, enhancing the functionality of the touchpad press device.
Implementation Method 1
The linking plates and the positioning plates are hinged to each other by some of the hinge ribs. The linking plates and the peripheral plates are hinged to each other by some of the hinge ribs.
Data Source
AI summary
A touchpad press device includes a support unit having two first sides interconnecting between two second sides, and first engaging members proximate to the second sides. A touch unit with a touch switch is disposed above the support unit, and a transmission unit is disposed between the support unit and the touch unit. The transmission unit includes peripheral plates, each of which is disposed above one of the second sides and has second engaging members, and a pressing plate to trigger the touch switch. When one of the peripheral plates is pressed downward through the touch unit, the other peripheral plate turns upward so that the second engaging members thereof engage the respective first engaging members to limit the other peripheral plate from moving further upward.