Haptic Holding Structure With Damper for Clearer Tactile Feedback
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Solution Overview
Problem
Existing haptic feeling presenting devices suffer from persistent vibration that deteriorates the haptic feeling when the actuator-generated vibration is damped too lightly.
Innovation Solution
A haptic feeling presenting device incorporating a holding part, a vibration actuator with a movable body and a fixed body that elastically vibrates, and a damper disposed between the holding part and a base part to stabilize vibration damping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If vibration damping is reduced to maintain strong vibration, then vibration strength is improved, but vibration persistence increases and haptic feeling deteriorates
Solution Approach 1:
The vibration actuator system is segmented into distinct functional components: the actuator body generating vibration, the holding part supporting the operation equipment, and the damper component. This segmentation allows independent optimization of vibration generation and vibration damping functions, resolving the contradiction between maintaining strong vibration and preventing excessive persistence.
Solution Approach 2:
A damper is introduced as an intermediary component between the vibration actuator and the holding part. This damper selectively absorbs and dissipates residual vibration energy while allowing the primary vibration to pass through to the operation equipment, thus reducing vibration persistence without compromising the strength of the main vibration output.
2Duration of action of moving object
If damper contact is added to suppress vibration persistence, then vibration damping is improved, but device complexity increases
Solution Approach 1:
The damper is merged with the holding part structure, where the holding part serves dual functions: supporting the operation equipment and providing the contact surface for the damper. This integration reduces the number of separate components and simplifies the overall device structure while maintaining effective vibration damping.
Solution Approach 2:
The holding part is designed with multi-functionality: it holds the operation equipment, provides structural support, and serves as one of the contact surfaces for the damper. This universal design reduces the need for additional dedicated components, thereby reducing device complexity while achieving the vibration damping function.
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
The device effectively suppresses vibration persistence, improving the clarity and stability of the haptic feeling applied to the operator.
Implementation Method 1
a damper disposed in contact with each of the holding part and the base part
Implementation Method 2
a fixed body supporting the movable body such that the movable body is capable of elastically vibrating in a vibration direction
Data Source
AI summary
A tactile-sensation presenting device according to the present invention is provided with: a holding part that makes it possible to hold an operable appliance that is operated by an operator by touching; a vibratory actuator that includes a movable member supporting the holding part and a fixed member supporting the movable member so as to allow elastic vibration along a vibration direction, the vibratory actuator driving the movable member in one direction along the vibration direction to generate vibration, which causes a tactile sensation to be given to the operator via the operable appliance; a base to which the fixed member of the vibratory actuator is fixed; and an attenuating part disposed in a state of contact with each of the holding part and the base.