Air-Core Coil Unit With Protruded Attachment
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Solution Overview
Problem
The existing photographing optical devices with shake correction mechanisms require complex attaching work for air-core coils, involving multiple end parts of conducting wires, which complicates the attachment process and increases the risk of coil damage during handling.
Innovation Solution
A coil unit with a coil holding member featuring protruded parts on its side faces, allowing the coil to be directly wound around these protrusions, reducing the number of end parts to be processed and enhancing the coil's attachment accuracy and stability, while a winding device with a rotatable subordinate head prevents winding collapse.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If air-core coils are fixed to the inner peripheral face of a rectangular tube-shaped case body, then the drive mechanism can be constructed, but the attaching work becomes complicated and the number of end parts to be processed increases
Solution Approach 1:
The case body is divided into a main body portion and a protruding portion that extends from the inner peripheral face. The coil is specifically attached to the protruding portion rather than the entire inner peripheral face, segmenting the attachment area to simplify the process and reduce the number of end parts requiring processing.
Solution Approach 2:
The protruding portion acts as an intermediary structure between the case body and the coil. It provides a dedicated attachment interface that simplifies the fixing process, reducing the complexity of attaching work and the number of end parts that need to be processed while ensuring reliable drive mechanism functionality.
2Reliability
If multiple end parts of conducting wires are connected and processed, then the coil can be electrically functional, but the attaching work becomes further complicated
Solution Approach 1:
The conducting wire is segmented into a first conducting wire and a second conducting wire that are respectively attached to the protruding portion and the main body portion. This segmentation allows for simplified electrical connections with fewer end parts requiring processing, thereby improving ease of manufacture while maintaining coil electrical functionality.
Solution Approach 2:
The protruding portion serves as an intermediary for electrical connection, providing a dedicated attachment point for the first conducting wire. This intermediary structure simplifies the electrical connectivity process, reducing the number of end parts that need to be processed and improving ease of manufacture.
3Ease of manufacture
If the coil is directly wound on the coil holding member, then the attaching process is simplified, but winding collapse may occur
Solution Approach 1:
The protruding portion is designed with specific dimensional relationships (width greater than coil width, length greater than coil thickness) to provide beforehand cushioning and support during the winding process. This prevents winding collapse by ensuring the coil has adequate support structure in place before winding begins, while still allowing for simplified direct winding attachment.
Data Source
AI summary
A coil unit may include an even number of coils comprising a first coil and a second coil; and a coil holding member which holds the even number of the coils. An outer peripheral face of the coil holding member may include a side-face pair comprising a first side face and a second side face which are substantially parallel to each other. The first side face may be formed with a first protruded part around which the first coil is wound, the first protruded part being protruded to an outer peripheral side with respect to the coil holding member. The second side face may be formed with a second protruded part around which the second coil is wound, the second protruded part being protruded to an outer peripheral side with respect to the coil holding member. The first coil and the second coil may be structured from one conducting wire.