Doors and windows

The joinery design addresses the issue of exposed boundaries in conventional window fittings by using a cover material to conceal the trim-verticle frame junction, enhancing aesthetics and thermal insulation while accommodating thermal expansion.

JP7877134B2Active Publication Date: 2026-06-22YKK AP INC
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
YKK AP INC
Filing Date
2022-09-07
Publication Date
2026-06-22

AI Technical Summary

Technical Problem

Conventional window fittings with vertical beams expose the boundary between the vertical beam and the pressing edge, impairing the design property and visibility.

Method used

A joinery design where vertical frames are held by projections on one side and a trim on the other, with a cover material covering the boundary between the trim and vertical frame, and the cover material is secured via an insulating material to an extension of the vertical rib, ensuring thermal isolation and aesthetic unity.

Benefits of technology

The design provides superior aesthetics by hiding the boundary, preventing heat transfer, and allowing for thermal expansion, resulting in a unified and aesthetically pleasing appearance.

✦ Generated by Eureka AI based on patent content.

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Abstract

To provide a fitting with superior design.SOLUTION: A fitting is equipped with a longitudinal bone positioned between the face members of multiple windows whose face members are arranged side by side in the horizontal direction, and the face members are held by protrusions each protruding to both sides of the longitudinal bone in the horizontal direction on one side in the depth direction and beads attached to the longitudinal bone on the other side in the depth direction. The boundary between the beads attached to the longitudinal bone and the longitudinal bone is covered by a cover material provided on the other side of the longitudinal bone.SELECTED DRAWING: Figure 3
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