Casement window locking system with hidden handle

By designing a casement window locking system with a concealed handle, the problem of difficult installation of narrow-frame profiles was solved, achieving a simple and practical window sash locking function, improving installation efficiency and reducing costs.

CN122280406APending Publication Date: 2026-06-263H INC +1
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Patent Information

Application Number
CN202610454040.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-08
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Traditional lock box installation methods cannot meet the installation requirements of narrow profiles, increasing costs and reducing installation efficiency. Furthermore, existing handle structures are complex and have low installation efficiency.

Method used

Design a casement window locking system with a concealed handle, including a concealed handle, a transmission lock box, two first transmission rods, two connecting block components, and two lock seats. The transmission lock box is connected through the concealed handle. The sliding block is moved by the cooperation of the gear part and the rack part of the handle to realize the locking or opening of the window sash. The lock box can be directly installed on the surface of the window sash profile.

Benefits of technology

The overall structure is simple and practical, with high installation efficiency and good visual effect. The handle is hidden inside the window sash profile, which reduces installation costs and improves installation efficiency.

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Abstract

The casement window locking system comprises the hidden handle, a transmission lock box, two first transmission rods, two connecting block components and two lock seats, the hidden handle is connected with the lock seats, the lock seats are in transmission connection with the two first transmission rods respectively, one first transmission rod is connected with one connecting block component, and the other first transmission rod is connected with the other connecting block component. One connecting block part is connected with one lock seat; according to the lock box, the hidden handle, the transmission lock box, the two first transmission rods, the two connecting block components and the two lock seats are arranged, the hidden handle is connected with the transmission lock box, a matched handle is matched with a rack part through a gear part to drive a sliding block to move, and the sliding block drives components in the transmission lock box to move; and then the transmission lock box drives the connecting block component to move through the first transmission rod, so that the connecting block component locks or loosens the lock seat, the window sash is opened or locked, the overall structure is simple, practical and reliable, the handle can be hidden in the window sash profile, and the overall visual angle effect is good.
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