Operation Shaft Travel Adjustment for Variable Push-In Input Control
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Solution Overview
Problem
Conventional input devices struggle to dynamically and easily change the maximum push-in position of an operation shaft, limiting their adaptability and user experience.
Innovation Solution
The input device incorporates a range-of-motion adjuster with a contact surface that can be moved by a motor, allowing the tip of the operation shaft to contact at different positions, thereby changing the maximum push-in position steplessly or stepwise, using a feed screw mechanism for precise adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional operation shaft structure is used, then the device structure is simple, but the maximum push-in position cannot be easily and dynamically changed
Solution Approach 1:
The patent applies the dynamics principle by making the contact position of the range-of-motion adjuster movable rather than fixed. The adjuster can dynamically change its contact position along the operation shaft in the first direction, enabling the maximum push-in position to be adjusted during operation. This transforms a static structure into a dynamic one, resolving the contradiction between structural simplicity and adjustability.
Solution Approach 2:
The range-of-motion adjuster serves multiple functions: it limits the operation shaft's movement, provides a contact surface for the tip portion, and enables dynamic adjustment of the maximum push-in position through motor-driven movement. This multi-functionality allows a single component to address both structural simplicity and adaptability requirements.
2Adaptability or versatility
If the maximum push-in position is fixed, then the device structure is simple, but the user experience and adaptability to various applications are limited
Solution Approach 1:
The range-of-motion adjuster acts as an intermediary component between the operation shaft and the housing. It mediates the interaction by providing a movable contact surface that can be positioned anywhere along the operation shaft's travel path, enabling flexible adaptation to different applications without requiring complete redesign of the operation shaft itself.
Solution Approach 2:
The patent replaces manual mechanical adjustment with an automated motor-driven system. The range-of-motion adjustment motor automatically moves the range-of-motion adjuster to the desired contact position, eliminating the need for manual mechanical reconfiguration and enabling easy dynamic adjustment for different applications.
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 solution enables easy and dynamic adjustment of the maximum push-in position, enhancing user interaction and adaptability of the input device to various applications.
Implementation Method 1
using a feed screw mechanism for precise adjustment
Data Source
AI summary
An input device includes an operation shaft extending in a first direction, linearly movable in the first direction, and having a tip portion; a force sensation generator configured to apply a force to the operation shaft; a sensor configured to detect an amount of movement of the operation shaft; a range-of-motion adjuster configured to change a maximum push-in position of the operation shaft; and a range-of-motion adjustment motor configured to operate the range-of-motion adjuster. The range-of-motion adjuster has a contact portion with which the tip portion of the operation shaft comes into contact. The range-of-motion adjuster changes the maximum push-in position of the operation shaft by being operated to change a contact position of the tip portion with respect to the contact portion in the first direction.