会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 10. 发明公开
    • TRANSDUCTEUR ELECTRODYNAMIQUE, APPLICATIONS AUX HAUT-PARLEURS ET GEOPHONES
    • ELEKTRODYNAMISCHER WANDLER UND DESSEN ANWENDUNG IN LAUTSPRECHERN UND GEOPHONEN
    • EP1946607A2
    • 2008-07-23
    • EP06841994.4
    • 2006-11-02
    • Université du MaineRichoux, Bernard
    • RICHOUX, BernardLEMARQUAND, GuyLEMARQUAND, Valérie
    • H04R9/02
    • H04R9/025H04R2209/021H04R2209/022
    • The invention relates to an electrodynamic transducer including a frame and containing at least one electric coil (2) which is placed in a static magnetic field and which can move about a rest position in a vertical free space. The aforementioned coil(s) is wound around and fixed to a mandrel (12) and a return means is used to return the coil-bearing mandrel to the rest position in the absence of an external bias, said straight cylinder defining an inner volume and an outer volume. According to the invention, the magnetic field is produced by outer and inner magnetic structures which each comprise at least one fixed permanent magnet in the form of a ring. The motor does not contain any ferromagnetic or magnetic part between the outer volume and the inner volume. Moreover, at least the part of the frame that is used to fix the magnets is made form a non-ferromagnetic and non-magnetic material. The ratio R of the inductance value Lp of the coil when at rest and blocked in the transducer to the inductance value Ll of the same coil when free and isolated in the space is between 0.9 and 1.1 in the useful frequency band of the transducer. Numerous implementation variants are disclosed in the invention.
    • 换能器具有产生磁场的内部和外部磁性结构以及环形形式的各自的永磁体。 结构位于在内部和外部体积之间延伸的自由垂直空间的侧面。 电机不具有铁磁或磁性部件。 固定磁体的框架由非铁磁性和非磁性材料制成。 在换能器的有用频带中,电动线圈(2)在换能器中被阻塞的电感值与在空间中自由隔离的线圈的电感线圈的比值在0.9和1.1之间。