Door panel opening and closing mechanism and ventilation device

By using a flexible connection structure, the problems of door panel deformation and poor sealing caused by excessive tension of the electric push rod in the ventilation device are solved, realizing precise opening and closing of the door panel and improving the stability of the equipment, extending its service life and reducing maintenance costs.

CN224549909UActive Publication Date: 2026-07-24BEIJING KEGAN TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
BEIJING KEGAN TECH CO LTD
Filing Date
2025-07-15
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

In existing ventilation devices, the electric push rod may exert excessive force when the door panel is closed, causing the door panel to deform or be damaged, affecting the sealing performance and equipment lifespan. At the same time, rigid mechanical connections cannot adapt to subtle changes during the movement process, resulting in poor sealing or push rod jamming.

Method used

The flexible connection structure, through the design of guide screws, pins and elastic components (such as disc springs), allows for flexible adjustment of the connection between the push rod and the door panel, ensuring that the door panel maintains the IP66 protection level when fully closed, and avoiding over-closing and deformation.

Benefits of technology

It achieves precise opening and closing of the door panel, meets IP66 sealing requirements, avoids door panel deformation and push rod damage, improves the reliability and stability of the equipment, extends its service life, and reduces maintenance costs.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224549909U_ABST
    Figure CN224549909U_ABST
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Abstract

The utility model discloses a door plate switch mechanism and ventilation device, wherein the door plate switch mechanism includes frame and door plate, the push rod for push -and -pull door plate is hinged on the frame, and the extension end of push rod is connected with guide screw, and the shaft pin is relatively rotatable and is arranged on the door plate, and the guide screw transversely passes through the shaft pin to drive the door plate to open and close through the shaft pin, and the outer end of guide screw is equipped with elastic part, and the shaft pin is located between elastic part and the extension end of push rod, and the elastic part is used for exerting elastic force to the door plate when the push rod pulls the door plate and closes the frame, and the door plate is protected from being damaged. The utility model discloses a ventilation device, including the door plate switch mechanism of the utility model. The technical scheme of the utility model has the advantages of reducing the size error influence, ensuring that the door plate can be opened and closed smoothly, ensuring that the door plate can be completely closed, effectively preventing water and dust, avoiding excessive closure and deformation, and prolonging the service life of the equipment.
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