Antenna Coil Winding Jig With Cut Surface for Flat Uniform Loops
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Solution Overview
Problem
Existing antenna coil manufacturing processes face issues with irregular winding and surface protrusions, leading to the need for additional planarization steps, which are addressed by developing a winding apparatus with a cut surface on its rotation jig to prevent unnecessary wire rotation and ensure uniform winding.
Innovation Solution
A cylindrical rotation jig with a cut surface and a support plate is used to guide the metal wire, allowing it to be wound uniformly around the jig's side surface multiple times, forming a loop-shaped antenna coil with straight line sections, preventing nonuniform winding and maintaining flatness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual winding is used to manufacture antenna coils, then flexibility in handling is improved, but winding uniformity and surface flatness deteriorate due to irregular winding and protrusions
Solution Approach 1:
The patent replaces manual mechanical winding with an automated winding apparatus that uses a rotation jig and support plate to mechanically guide and constrain the metal wire during winding, ensuring uniform winding without manual intervention
Solution Approach 2:
The support plate acts as an intermediary component between the rotation jig and the metal wire, providing a guiding surface that ensures the wire winds uniformly around the jig while maintaining proper orientation and preventing irregularities
2Manufacturing precision
If automated winding apparatus is used to improve winding uniformity, then manufacturing precision is improved, but device complexity increases due to additional components like cut surfaces and support plates
Solution Approach 1:
The winding apparatus is segmented into distinct functional components: a rotation jig with a specific geometric feature (cut surface or straight line section) and a separate support plate, allowing each component to perform its specific function while maintaining overall simplicity
Solution Approach 2:
The rotation jig incorporates a localized geometric feature (cut surface or straight line section) at a specific location to provide the necessary wire guidance, rather than complicating the entire jig structure, thus maintaining simplicity while achieving precision
3Manufacturing precision
If additional planarization processes are added to correct irregular winding, then manufacturing precision is improved, but production time and process complexity increase
Solution Approach 1:
The winding apparatus is designed to perform the planarization function preliminarily during the winding process itself, by using the support plate to guide the wire onto a flat surface and the rotation jig's geometric features to prevent irregularities before they occur, eliminating the need for subsequent planarization processes
Data Source
AI summary
Disclosed are: a winding apparatus having a cut surface formed on a side surface of a rotation jig so as to prevent metal wire from being unnecessarily rotated at the time of winding the metal wire; and an antenna coil having a loop shape including at least one straight line section. The disclosed antenna coil includes: a loop wound multiple times around a winding axis on a same plane; a first end part disposed in an inner circumferential area of the loop; and a second end part disposed in an outer circumferential area of the loop, wherein the loop includes one or more straight line sections.