Vibration Actuator Buffer Structure for Quiet Impact Control
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Solution Overview
Problem
Existing vibration presenting apparatuses experience excessive stress and generate unwanted sounds due to strong vibrations, leading to potential failure and maintenance needs.
Innovation Solution
A vibration actuator with a movable part, vibration generating part, and elastic support part, featuring a load detecting mechanism and movement regulating part to absorb impact and reduce sound, using a movable body supported by an elastic support and regulated by a buffer member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a vibration actuator generates strong vibration through movable element collision, then vibration feedback is improved, but collision sound increases and impact resistance deteriorates
Solution Approach 1:
A buffer member is introduced as an intermediary element between the movable element and the housing. This buffer member absorbs the collision impact and reduces the generation of collision sound while maintaining the vibration feedback function. The buffer member acts as a mediator that converts the harmful collision into controlled vibration without generating excessive noise.
Solution Approach 2:
The buffer member is pre-installed in the housing to provide cushioning before collision occurs. This beforehand cushioning prepares the system to absorb impact energy and reduce collision sound during vibration operation, preventing the harmful effects of direct collision between the movable element and housing.
2Reliability
If strong impact continues on the vibration presenting apparatus, then vibration feedback intensity is improved, but excessive stress is applied to the sensor causing failure
Solution Approach 1:
The buffer member serves as a protective intermediary between the external impact and the sensor. It absorbs and distributes the stress from strong impacts, preventing excessive stress from being transmitted to the sensor. This mediator role protects the sensor from damage while allowing the vibration actuator to continue functioning.
Solution Approach 2:
The buffer member provides pre-established protection against strong impacts. By being in place before impact occurs, it cushions the sensor against excessive stress from external forces, thereby improving sensor durability and preventing failure during intense vibration operation.
3Ease of operation
If the movable part is freely movable for vibration generation, then vibration feedback responsiveness is improved, but movement control precision deteriorates
Solution Approach 1:
The buffer member is positioned at specific locations within the housing to provide localized control of the movable element's movement. This local quality approach allows the movable element to remain freely movable for vibration generation while the buffer member provides precise control at critical points, maintaining both responsiveness and movement control precision.
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
Enhances impact resistance and reduces sound generation, improving the durability and operational silence of the apparatus.
Implementation Method 1
an elastic support part that supports the movable part with respect to the base part in a vibratable manner
Implementation Method 2
a load detecting part provided between a presentation-part side fixing part and a support-part side fixing part and detecting, as a load, strain due to the pressing operation
Implementation Method 3
The movement regulating part regulates movement of the movable part by engaging with an engaged part of the base part via a buffer member when the movable part moves in a direction separating from the base part
Data Source
AI summary
Provided is a vibration actuator including: a movable part that gives vibration to a vibration presenting part that receives a pressing operation; a vibration generating part that generates the vibration of the movable part in accordance with the pressing operation; a base part; and an elastic support part. The movable part includes: a load detecting part provided between a presentation-part side fixing part and a support-part side fixing part and detecting, as a load, strain due to the pressing operation; and a movement regulating part provided on a side of the presentation-part side fixing part rather than the load detecting part. The movement regulating part regulates movement of the movable part by engaging with an engaged part of the base part via a buffer member when the movable part moves in a direction separating from the base part.