Tunable Control Device Keys for Adjustable Actuation Force
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Control devices lack the ability to adjust the initial stiffness or actuation force of keys to accommodate individual user preferences, and existing solutions primarily focus on varying functions based on pressure adjustments rather than providing customizable key actuation forces and travel distances.
Innovation Solution
A control device with tunable keys that include adjustable mechanisms such as springs, magnets, and movable weights or actuators, allowing users to customize the actuation force and travel distance of keys, enabling personalized comfort and functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the actuation force of a key is increased to prevent unintended activation, then reliability is improved, but ease of operation deteriorates
Solution Approach 1:
The patent implements adjustable actuation force mechanisms that allow users to dynamically modify key stiffness according to their preferences. The system transitions from a fixed actuation force design to a dynamic, user-configurable system where the actuation force can be adjusted within a range, enabling each user to optimize the balance between preventing unintended activation and maintaining ease of operation.
Solution Approach 2:
The patent changes the physical parameter of actuation force by incorporating adjustable spring mechanisms, magnetic fields, or weights that can be modified to alter the stiffness and activation force of keys. This allows the system to adapt the mechanical properties of the keys to match individual user needs, resolving the contradiction between reliability and ease of operation.
2Reliability
If the key travel distance is increased to prevent unintended activation, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent adjusts the key travel distance parameter through simple mechanical means such as adjustable stops, variable-length linkages, or repositionable switch contacts. These mechanisms allow modification of the activation threshold without introducing complex control systems, maintaining reliability while minimizing added complexity.
3Adaptability or versatility
If adjustable mechanisms are added to customize actuation force, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent applies adjustment mechanisms locally at the key level rather than requiring system-wide modifications. Each key can be independently adjusted through localized spring preload adjustments, magnetic field strength modifications, or individual weight additions, allowing customization without proportionally increasing overall device complexity.
Solution Approach 2:
The patent introduces intermediary elements such as adjustable springs, magnetic components, or weight sliders that mediate between the user's adjustment input and the key's actuation force. These intermediaries provide a simple interface for customization while isolating the complexity of the adjustment mechanism from the main control system.
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
Enables users to select from a range of actuation forces and travel distances, enhancing user comfort and preventing unintended key activations, while maintaining minimal residual stress on the keys and providing adaptable control device performance.
Implementation Method 1
the adjustment means on the control device includes a spring configured to apply an adjustment force to the key that increases or decreases the actuation force of the key
Implementation Method 2
a first magnet near an actuator, the first magnet having a first magnetic field with a first polarity; a second magnet near a switch, the second magnet having a second magnetic field with a second polarity opposite to the first polarity
Implementation Method 3
the actuation force varies with the difference between the first and second magnetic fields
Data Source
AI summary
A control device for use on a working surface includes a bottom housing configured to be placed on the working surface; a top housing coupled with the bottom housing, the top housing including at least one key; an actuator disposed between the bottom housing and the top housing and coupled with the key; a switch disposed between the bottom housing and the top housing, wherein the switch is activated via application of an actuation force to the key; and an adjustment means configured to enable a user to adjust the actuation force required to activate the key.