Doors and fittings
The fitting design with a crimped metal and resin engaging pieces addresses the imbalance in expansion and contraction due to temperature changes, ensuring effective suppression and structural stability.
JP2026103324APending Publication Date: 2026-06-24YKK AP INC
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Patent Information
- Application Number
- JP2024217733
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2026-06-24
AI Technical Summary
Technical Problem
Existing fittings with metal and resin materials suffer from poor balance in expansion and contraction due to temperature changes, leading to insufficient suppression of these movements.
Method used
A fitting design featuring a partition material with a mortise and tenon joint, where a metal engaging piece is crimped to a resin engaging piece at the ends, effectively suppressing expansion and contraction.
Benefits of technology
The design effectively suppresses expansion and contraction of resin materials due to temperature changes, maintaining structural integrity and balance.
✦ Generated by Eureka AI based on patent content.
Abstract
The present invention provides a building component that can effectively suppress the expansion and contraction of a resin material fixed to a metal material due to temperature changes. [Solution] The joinery 10 has a middle rail 28 between the left and right vertical frames 25, 26, which is made up of a metal middle rail 50 on the exterior side and a resin middle rail 51 on the interior side. The middle rail 28 is joined to the vertical frames 25, 26 in a mortise and tenon joint manner. The metal middle rail 50 and the resin middle rail 51 have first engaging portions 79 that engage with each other at the top and bottom, and second engaging portions 81 that engage with each other between the two first engaging portions 79. The second engaging portion 81 is formed when a metal engaging piece 62, which is part of the metal middle rail 50, is pressed against and crimped against a resin engaging piece 80, which is part of the resin middle rail 51, near at least one of the left and right ends of the middle rail 28, thereby forming a crimped portion 83.
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