Armature Core Seal Structure for Liquid-Resistant Mounting
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Solution Overview
Problem
Conventional armature cores in motors and generators, when exposed to liquids like cutting fluids, suffer performance degradation and breakdown due to liquid infiltration between steel sheets, necessitating a solution to prevent fluid ingress.
Innovation Solution
An armature core design featuring a core body with laminated steel sheets, internal blocks, and a fastener insertion member with a seal structure that blocks fluid passage, comprising a threaded insertion member surrounding the opening of the fastening hole to prevent liquid infiltration, and optionally incorporating a cover or elastic seal members for enhanced protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the armature core is fixed to a mounting plate using tap holes and bolts, then the armature core can be securely mounted, but liquid can infiltrate inside the armature core through the fastening holes, causing performance degradation and breakdown
Solution Approach 1:
The seal member is nested within the fastener insertion member, which is inserted into the fastening hole. The seal member surrounds the inner circumference of the fastener insertion member's insertion end, creating a nested structure that effectively seals the fastening hole while maintaining the bolted connection for secure mounting.
Solution Approach 2:
The seal member acts as an intermediary element between the fastener insertion member and the armature core. It prevents direct contact between liquid and the interior of the armature core through the fastening hole, while still allowing the mechanical fastening function to operate. The seal member mediates between the need for secure mounting and the need for liquid protection.
2Reliability
If seal structures are added to prevent liquid infiltration, then liquid resistance is improved, but the device complexity increases due to additional components
Solution Approach 1:
The seal member and fastener insertion member are combined into a single integrated component. The fastener insertion member includes the seal member as an integral part, eliminating the need for separate sealing components and reducing assembly steps. This merging approach maintains effective sealing while simplifying the overall structure and reducing the number of parts.
Data Source
AI summary
An armature core of a linear motor, the armature core including: a core body having a plurality of teeth parts around which a winding is wound, and consisting of laminated steel sheets; a block disposed inside of the core body; a fastening hole provided in the block, and through which a fastener is inserted; and a fastener insertion member having a fastener insertion hole, and arrangeable at the core body in a state in which outside of the core body and inside of the fastening hole are in communication via the fastener insertion hole, in which the core body is fixed to a fixing target via the block, by the fastener inserted in the fastener insertion hole being fastened to the block via the fastening hole, and the armature core has a seal structure which, in a state in which the fastener insertion member surrounds an opening part of the fastening hole, blocks passage of fluid from the opening part to outside of the fastener insertion member.