Vibration Generating Device Integrated Coil Bobbin
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Solution Overview
Problem
Existing vibration generating devices face issues such as power loss and noise due to rattling movements between the case and coil bobbin, and an increase in the number of components, particularly in configurations where a separate coil bobbin and case are used.
Innovation Solution
A vibration generating device with a fixed case that includes a tube for the coil bobbin, a movable body with a magnetic field generator, and a support member to elastically support the movable body, where the coil is wound directly around an inner cylinder and covered by an outer cylinder, reducing the number of components and preventing rattling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate coil bobbin and case are used, then the coil can be accommodated, but power loss and noise occur due to rattling movements between the case and coil bobbin
Solution Approach 1:
The coil bobbin is integrated into the case structure by forming an inner cylinder within the case body, eliminating the separate coil bobbin component. This merging prevents rattling movements between separate parts, thereby reducing power loss and noise while maintaining coil accommodation functionality.
2Ease of manufacture
If a separate coil bobbin and case are used, then the coil can be accommodated, but the number of components increases
Solution Approach 1:
The case and coil bobbin are merged into a single integrated structure where the inner cylinder is formed as part of the case body. This reduces the total number of components, simplifies assembly procedures, and eliminates the need for separate coil bobbin installation while maintaining all necessary functional capabilities.
3Stability of the object's composition
If the coil is wound around a separate coil bobbin, then the coil structure is stable, but additional components are required
Solution Approach 1:
The coil bobbin functionality is merged into the case by forming an inner cylinder as an integral part of the case structure. The coil is wound around this inner cylinder, maintaining structural stability for coil winding while eliminating the separate coil bobbin component, thus reducing overall device complexity.
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 configuration suppresses power loss and noise while minimizing the number of components, enhancing the device's efficiency and assembly simplicity by integrating the coil bobbin and case, allowing for effective vibration generation without additional components.
Implementation Method 1
a coil attached inside the tube; a movable body arranged inside the coil, the movable body including a magnetic field generator configured to generate a magnetic field toward the coil
Implementation Method 2
a coil attached inside the tube; a movable body arranged inside the coil, the movable body including a magnetic field generator configured to generate a magnetic field toward the coil
Data Source
AI summary
A vibration generating device including a fixed case including a tube extending in a first direction; a coil attached inside the tube; a movable body arranged inside the coil and including a magnetic field generator configured to generate a magnetic field toward the coil; and a support member interposed between the fixed case and the movable body and supporting the movable body inside the coil such that the movable body is configured to vibrate in the first direction. The fixed case includes a first fixed case member including a first outer cylinder and an inner cylinder extending from the first outer cylinder along the first direction, and a second fixed case member including a second outer cylinder attached to an end of the first outer cylinder to cover the inner cylinder. The coil is wound around the inner cylinder and covered by the second outer cylinder.