Building shutter device

The building shutter device addresses the issue of wind-induced deformation and breakage by reinforcing the insertion holes with a cylindrical structure that rises towards the bracket portion, enhancing durability and structural integrity.

JP7650640B2Active Publication Date: 2025-03-25SANWA SHUTTER CORP
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Patent Information

Application Number
JP2020180155
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2020-10-28
Publication Date
2025-03-25
Estimated Expiration
2040-10-28

AI Technical Summary

Technical Problem

Existing building shutter devices are prone to deformation and potential breakage due to strong winds, particularly at weakly reinforced insertion holes near the edges of the shutter case body, which can lead to structural damage.

Method used

The building shutter device incorporates a reinforced structure for the insertion holes, featuring a large diameter cylindrical shape that rises towards the bracket portion, providing increased strength and preventing deformation by collapsing and deforming under load.

Benefits of technology

The reinforced insertion holes significantly improve the durability of the shutter case by enhancing the structural integrity against wind loads, preventing deformation and potential breakage, while maintaining workability and simplicity in design.

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Abstract

To prevent deformation of a screw fastening portion of a bottom plate 8b of a shutter case 5, which is fastened to a bracket portion 6 via screws 10c, when the bottom plate 8b is subjected to a direct load of bending toward the outdoor side due to strong wind or an indirect load of the shutter curtain, which bends toward the outdoor side due to strong wind, contacting the bottom plate 8b in a pressurized manner.SOLUTION: With a diameter of an insertion hole 8e of a screw 10c being larger than a diameter of a screw, a rising reinforcing portion 8f is formed by burring to increase the strength.SELECTED DRAWING: Figure 7
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