Dustproof door and window hinge

By incorporating a dustproof component into the hinge and utilizing the linkage of the connecting arm to cover the slide groove, the problem of dust accumulation in the slide groove is solved, thereby improving the hinge's dustproof capability and stability and extending its service life.

CN224514983UActive Publication Date: 2026-07-17RUIAN ZHONGLI DOOR & WINDOW HARDWARE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
RUIAN ZHONGLI DOOR & WINDOW HARDWARE CO LTD
Filing Date
2025-08-13
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing door and window hinges tend to accumulate dust in the sliding groove when open, causing the hinges to become clogged and affecting their opening and closing ability.

Method used

A dustproof component is installed in the hinge. Through the linkage of the first connecting arm and the second connecting arm, the dustproof component slides in the groove. When the door and window are fully opened, the dustproof component covers the groove to prevent dust from entering. At the same time, it blocks the uncovered areas during the opening and closing process.

Benefits of technology

It effectively prevents dust from entering the slide rail, avoids hinge blockage, improves the smoothness of opening and closing, and extends the service life of the hinge.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224514983U_ABST
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Abstract

The utility model discloses a dustproof door and window hinge belonging to door and window technical field, a dustproof door and window hinge, including base, first connecting arm, second connecting arm, the base is provided with the sliding slot, and the first connecting arm is hinged with the base, and its characterized in that: the base is equipped with dustproof member still, and the dustproof member and the sliding slot slide fit, and one end of second connecting arm is hinged with the first connecting arm, and the other end is hinged with the dustproof member. When the door and window open, the first connecting arm, the second connecting arm rotate along with it, and synchronously drive the dustproof member to slide in the sliding slot, when the door and window open completely, the dustproof member covers the sliding slot completely, realize the covering of the sliding slot, prevent dust or contaminant from entering the sliding slot, avoid the hinge to open and shut to block up, and simultaneously, the first connecting arm, the second connecting arm will shield the place that has not been covered by the dustproof member in the process of closing or opening, improve the dustproof ability of hinge.
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Claims

1. A dustproof door and window hinge, comprising a base, a first connecting arm and a second connecting arm, wherein the base is provided with a sliding groove, and the first connecting arm is hingedly connected to the base, characterized in that: The base is also provided with a dustproof component, which is slidably engaged with the slide groove. One end of the second connecting arm is hinged to the first connecting arm, and the other end is hinged to the dustproof component.

2. The dust-proof door and window hinge according to claim 1, characterized in that: The dustproof component is provided with a receiving groove, and the end of the second connecting arm is located in the receiving groove. The side of the dustproof component is provided with an arc-shaped dustproof surface. The dustproof component is provided with a slider on the side opposite to the receiving groove. The slider passes through the sliding groove and slides in cooperation with the sliding groove. The receiving groove is provided with a first hinge hole. A first hinge bolt passes through the first hinge hole. One end of the first hinge bolt abuts against the outer surface of the base, and the other end is hinged to the second connecting arm.

3. The dust-proof door and window hinge according to claim 2, characterized in that: A first gasket is provided between the first hinge bolt and the base.

4. The dustproof door and window hinge according to claim 3, characterized in that: The first connecting arm has a positioning pin at one end and a second hinge bolt at the other end. The first connecting arm is rotatably engaged with the base through the second hinge bolt. A positioning groove is provided on the side of the first connecting arm near the dustproof component. The side arm of the dustproof component can abut against the side wall of the first connecting arm. A second gasket is provided at the hinge point between the first connecting arm and the base.

5. The dust-proof door and window hinge according to claim 4, characterized in that: The second connecting arm has a sliding pin at one end and a second hinge hole at the other end. The end of the first hinge bolt passes through the second hinge hole. The second connecting arm has a third hinge bolt in the middle. The second connecting arm rotates with the first connecting arm through the third hinge bolt. The second connecting arm has a positioning notch in the middle. A third gasket is provided between the second connecting arm and the first connecting arm.

6. The dust-proof door and window hinge according to any one of claims 1 to 5, characterized in that: The base end is provided with a bending piece, and the base end face is provided with a first mounting hole. The base is provided with a plurality of first fixing plates on the side opposite to the dustproof component. The first fixing plates are rotatably engaged with the base through a fourth hinge bolt. A first elastic element is provided between the first fixing plate and the base. One end of the first elastic element abuts against the outer surface of the base, and the other end abuts against the outer surface of the first fixing plate.

7. The dust-proof door and window hinge according to claim 6, characterized in that: The base end is provided with a reinforcing member, which is perpendicular to the base and integrally formed with the base. The reinforcing member includes an installation part and a fixing part. A bending part is provided at the connection between the installation part and the fixing part. The installation part has a second installation hole through it. The fixing part is provided with a second fixing plate. The second fixing plate is rotatably engaged with the reinforcing member through a fifth hinge bolt. A second elastic member is provided between the second fixing plate and the reinforcing member. One end of the second elastic member abuts against the outer surface of the fixing part, and the other end abuts against the outer surface of the second fixing plate.