Vibratory Linear Actuator Weight Layout for Compact Vibration Suppression
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Solution Overview
Problem
Conventional vibratory linear actuators that use weights to absorb vibration are limited by their size and require a larger form factor to effectively suppress vibrations.
Innovation Solution
A vibratory linear actuator design that includes an output movable body and a vibration-absorbing movable body, coupled by a coupling member, where the vibration-absorbing movable body has an adjustable weight to align its center of gravity with that of the output movable body, allowing for efficient vibration suppression while reducing the overall size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a weight is added to the vibration-absorbing movable body to align centers of gravity, then vibration suppression is improved, but the device size increases
Solution Approach 1:
The patent combines the vibration-absorbing movable body and the weight into a single integrated component. The weight is formed as an integral part of the movable body rather than being a separate attached component, which eliminates the need for additional fastening structures and reduces overall device volume while maintaining vibration suppression functionality.
Solution Approach 2:
The movable body serves multiple functions simultaneously: it acts as both the vibration-absorbing element and the weight for center of gravity alignment. This multi-functionality eliminates the need for separate weight components and their associated fastening structures, thereby reducing device size while achieving effective vibration suppression.
2Manufacturing precision
If a separate weight component with fastening structure is used, then center of gravity adjustment is improved, but device complexity increases
Solution Approach 1:
The patent merges the weight function and the movable body function into a single integrated component. The weight is formed as an integral part of the movable body, eliminating the need for separate fastening structures and reducing structural complexity while maintaining precise center of gravity alignment capability.
Solution Approach 2:
The patent extracts the fastening structure from the design by making the weight an integral part of the movable body. This eliminates the need for separate fastening components and their associated complexity, while the center of gravity alignment function is maintained through the integrated design.
3Reliability
If multiple fastening structures are provided for attaching weight, then fastening reliability is improved, but manufacturing complexity increases
Solution Approach 1:
The patent combines the weight and movable body into a single integrated component, which eliminates the need for multiple fastening structures. This integration maintains fastening reliability through the unified structure while significantly reducing manufacturing complexity by removing the need for separate fastening operations.
Solution Approach 2:
The patent removes the fastening structures entirely by making the weight an integral part of the movable body. This extraction of the fastening function simplifies manufacturing while maintaining reliability through the integrated design that eliminates potential failure points associated with separate fastening components.
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 design effectively suppresses vibrations while enabling a size reduction, improving the actuator's compactness and performance.
Implementation Method 1
an output movable body capable of be reciprocated in a first direction by a magnetic field that changes cyclically
Implementation Method 2
a vibration-absorbing movable body configured to absorb vibration generated by the reciprocation of the output movable body in the first direction, by being reciprocated in the first direction at a phase opposite to a phase of the reciprocation of the output movable body
Data Source
AI summary
The present disclosure provides a vibratory linear actuator and a cutter capable of suppressing vibration while enabling a size reduction. A vibratory linear actuator according to the present disclosure includes an output movable body and vibration-absorbing movable body reciprocating at opposite phases. The vibratory linear actuator also includes a coupling member configured to couple the output movable body and vibration-absorbing movable body to each other. Vibration-absorbing movable body further includes absorbing-side weight configured to adjust to move the position of the center of gravity of vibration-absorbing movable body closer to the position of the center of gravity of the output movable body. The coupling member includes: an output movable body holder configured to hold the output movable body; vibration-absorbing movable body holder configured to hold vibration-absorbing movable body; and a coupler configured to couple the output movable body holder and vibration-absorbing movable body holder to each other. Absorbing-side weight is provided with a fastening portion fastened to a fastening portion counterpart formed in the vibration-absorbing movable body holder.