Through-Hole Haptic Actuator Structure for Stable Radial Alignment
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Solution Overview
Problem
Conventional vibrating motors face challenges in manufacturing efficiency due to difficulties in accurately arranging the movable portion in the radial direction, which affects the vibration stability and overall performance.
Innovation Solution
The vibrating motor design includes a stationary portion with a bearing portion that supports the movable portion along a center axis, featuring a tubular shape with varying inner diameters to facilitate vibration stability and manufacturing, and a coil that opposes the movable portion in the radial direction, allowing for improved vibration and reduced manufacturing complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the movable portion is not supported in the radial direction, then the manufacturing process becomes simpler, but the manufacturing efficiency decreases due to difficulty in accurately arranging the movable portion in the radial direction
Solution Approach 1:
The bearing portion is designed with a communication hole that penetrates the lower end portion in the vertical direction, allowing the movable portion to be preliminarily positioned and arranged accurately in the radial direction during the manufacturing process. This preliminary arrangement action enables efficient assembly while maintaining structural simplicity
2Reliability
If the movable portion is accurately arranged in the radial direction, then the vibration stability improves, but the manufacturing complexity increases
Solution Approach 1:
The bearing portion structure with the communication hole enables the movable portion to self-align and be accurately arranged in the radial direction through the design itself, without requiring complex external positioning mechanisms or additional manufacturing steps. The structure serves its own positioning 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
This design enhances vibration stability, simplifies the manufacturing process, and reduces the radial thickness of the vibrating motor, leading to increased productivity and efficient vibration performance.
Implementation Method 1
When the coil is energized to generate a magnetic field, the movable portion vibrates
Data Source
AI summary
A vibrating motor includes a stationary portion, and a movable portion able to vibrate with respect to the stationary portion along a center axis extending in a vertical direction. The stationary portion includes a bearing portion which supports the movable portion to be able to vibrate along the center axis and has a tubular shape extending along the center axis, and a coil which directly or indirectly opposes at least a portion of the movable portion in a radial direction. A lower end portion of the bearing portion has a tubular shape extending along the center axis. A communication hole which penetrates in the vertical direction and allows an outside of the bearing portion and an inside of a portion above the lower end portion of the bearing portion to communicate with each other is provided on a radially inner side of the lower end portion.