Hidden type automatic limiting oil-free ball bearing hinge with large opening angle

By using a ratchet sleeve and a pawl sliding sleeve limiting assembly and an oil-free ball bearing hinge assembly, the problems of limited opening angle and inflexible limiting of concealed hinges are solved, enabling large-angle opening and automatic limiting, thus improving safety and ease of use.

CN117145334BActive Publication Date: 2026-06-09SI CHUAN XING SHI FA MEN CHUANG YOU XIAN ZE REN GONG SI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SI CHUAN XING SHI FA MEN CHUANG YOU XIAN ZE REN GONG SI
Filing Date
2023-08-25
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing concealed hinges are costly, have limited opening angles, and lack flexible limiting devices, resulting in inconvenience and insufficient safety.

Method used

The limiting component, which uses a ratchet sleeve and a ratchet slide sleeve in cooperation, combined with an oil-free ball hinge assembly, enables large-angle opening and automatic limiting. The limiting range can be adjusted by the limiting adjustment component to adapt to different usage habits and environments.

Benefits of technology

While achieving a wide opening angle, it provides flexible limit adjustment and high safety, reduces maintenance costs and noise, and improves the service life and aesthetics of the hinge.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application relates to the technical field of hinges and discloses a hidden large-angle opening automatic limiting oil-free rotating ball hinge design, which comprises a first hinge, a second hinge, a hinge shaft assembly, a limiting assembly and a limiting adjustment assembly, the first hinge and the second hinge are hingedly connected through the hinge shaft assembly, the limiting assembly is sleeved on the hinge shaft assembly, the limiting assembly is used for limiting the first hinge and the second hinge, the limiting adjustment assembly is used for adjusting the limiting range of the limiting assembly, the limiting mechanism can realize arbitrary adjustment of the limiting range, the limiting angle range can be adjusted according to the use habit of a user and the installation environment of a door and window, the adjustment is convenient, the use is flexible, and the installation environment adaptability of the door and window is high.
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Citation Information

Patent Citations

  • A ratchet hinge structure with an arbitrary fixed angle

    CN108360936B

  • Ratchet wheel hinge structure with angle-free fixing function

    CN108360936A

  • Angle adjustable hinge

    CN203835111U