Electromagnetic device
The electromagnetic device addresses the challenge of securely fixing the coil bobbin to the core by using engaging and locking portions, reducing manufacturing steps and costs, and enhancing stability against external forces.
WO2025253606A1 Publication Date: 2025-12-11FANUC LTD
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Patent Information
- Application Number
- PCT/JP2024/020807
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-06-07
- Publication Date
- 2025-12-11
AI Technical Summary
Technical Problem
Existing electromagnetic devices face challenges in securely fixing the coil bobbin to the core housing without using adhesives, which increases manufacturing steps and costs, and may result in movement of the coil bobbin due to external impacts or vibrations.
Method used
The electromagnetic device employs a first engaging portion on the coil bobbin and a first locking portion on the core, which engage without adhesives, using convex and concave shapes to secure the coil bobbin in the core's accommodating portion, preventing axial and circumferential movement.
Benefits of technology
This method securely fixes the coil bobbin to the core without adhesives, reducing manufacturing complexity and costs while preventing movement, ensuring stable operation under external forces.
✦ Generated by Eureka AI based on patent content.
Abstract
This electromagnetic device comprises: an annular coil bobbin; and a core provided with an annular accommodation part in which the coil bobbin is accommodated. The inner circumferential surface of a trunk section of the coil bobbin is provided with a first engagement part. The outer circumferential surface of a central protrusion that demarcates the accommodation part is provided with a first locking part that locks the first engagement part.
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