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    Wheel with sound absorber
    1.
    发明授权
    Wheel with sound absorber 有权

    公开(公告)号：US11571927B2

    公开(公告)日：2023-02-07

    申请号：US16746936

    申请日：2020-01-19

    Applicant: CITIC Dicastal Co., LTD

    Inventor： Shiwen Xu ,  Mingbo Chen ,  Minglei Li ,  Shaobing Huang ,  Tiefeng Hu ,  Shuwei Feng ,  Dadong Wang ,  Weidong Liu

    IPC: B60B21/12 ,  B60C19/00

    Abstract: The present application relates to a wheel with a sound absorber, the sound absorber being mounted in a wheel air chamber to reduce acoustic resonance, wherein the sound absorber is configured as a flat hexahedral box resonator and fastened to a wheel hub through a band, a first positioning mechanism is provided between the hub and the box resonator to fix the relative positions of the hub and the box resonator, and a second positioning mechanism is provided between the box resonator and the band to fix the relative positions of the box resonator and the band. According to the technical solution of the present disclosure, the resonator is positioned and fixed more reliably on the wheel, and the wheel is simple and economical in manufacturing, and convenient and controllable in installation and operation.

    Curve Fitting Method, Apparatus and Device Based on A Drawing Tool
    3.
    发明申请
    Curve Fitting Method, Apparatus and Device Based on A Drawing Tool 有权

    公开(公告)号：US20230066024A1

    公开(公告)日：2023-03-02

    申请号：US17897120

    申请日：2022-08-26

    Applicant: CITIC Dicastal CO., LTD

    Inventor： Zuo XU ,  Tao TIAN ,  Ning WANG ,  Shaobing Huang ,  Lihua CHEN

    IPC: G06F30/12

    Abstract: A curve fitting method, apparatus and device based on a drawing tool for improving the accuracy of curve fitting. The method includes: determining a fitting area containing the original curve, in the fitting area, performing at least one sub-fitting operation on the original curve until the end condition of the curve fitting is satisfied, and generating a fitting curve corresponding to the original curve based on the fitting curve corresponding to each sub-fitting operation. This method can fit the original curve segments in the fitting area, which improves the accuracy of the obtained fitting curve.

    Wheel with a sound absorbing device
    5.
    发明授权
    Wheel with a sound absorbing device 有权

    公开(公告)号：US11900908B2

    公开(公告)日：2024-02-13

    申请号：US17170828

    申请日：2021-02-08

    Applicant: CITIC Dicastal Co., Ltd

    Inventor： Xi Li ,  Zuo Xu ,  Zhihua Zhu ,  Shiwen Xu ,  Shide Li ,  Shaobing Huang ,  Mingbo Chen ,  Minglei Li

    IPC: G10K11/172 ,  B60B21/12 ,  B33Y80/00 ,  G10K11/162

    CPC classification number: G10K11/172 ,  B33Y80/00 ,  B60B21/12 ,  G10K11/162

    Abstract: The application relates to a wheel with a sound absorption device, wherein the sound absorption device is arranged in a wheel air chamber to reduce acoustic resonance, the sound absorption device comprises two resonance sound absorption structure units which are connected in parallel, a first sound absorption frequency band of a first resonance sound absorption structure unit and a second sound absorption frequency band of a second resonance sound absorption structure unit are adjacent to each other or partially overlap with each other, and the resonance frequency of the wheel air chamber is contained at the adjacent part of the first sound absorption frequency band and the second sound absorption frequency band or in the overlapping area of the first sound absorption frequency band and the second sound absorption frequency band.

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