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
    • 4. 发明申请
    • ASYMMETRICAL MOVING SYSTEM FOR A PIEZOELECTRIC SPEAKER AND ASYMMETRICAL SPEAKER
    • 压电扬声器和非对称扬声器不对称移动系统
    • WO2007054919A1
    • 2007-05-18
    • PCT/IB2006/054237
    • 2006-11-14
    • KONINKLIJKE PHILIPS ELECTRONICSWINDISCHBERGER, SusanneLUTZ, Josef
    • WINDISCHBERGER, SusanneLUTZ, Josef
    • H04R17/00H04R7/04
    • H04R17/00H04R7/045
    • The present invention discloses a moving system (3) for a piezoelectric speaker (1), comprising a membrane (4) and a piezoelectric layer (5) attached thereto, wherein a movement of the moving system (3) in a main direction (MD) is substantially caused by dilatation/contraction of the piezoelectric layer (5) transverse to said main direction (MD). Accordingly, there is no translatory movement when exciting the moving system (3), but only a bending movement. To provide an advantageous frequency response of the moving system (3), it is built up asymmetrically with respect to the moving characteristics. Accordingly, the modes are frequency shifted on the one hand and of less influence on the other. Hence, the frequency response of an inventive speaker (1) has less elevations and depressions in the frequency response. The concrete design of a moving system (3) is preferably done by the use of a computer simulation based on a finite elements method. In a preferred embodiment the local compliance and/or the shape of the moving system (3) is asymmetrical with respect to any point in the plane of the moving system (3).
    • 本发明公开了一种用于压电扬声器(1)的移动系统(3),其包括膜(4)和附接到其上的压电层(5),其中移动系统(3)沿主方向(MD )主要由压电层(5)横向于所述主方向(MD)的扩张/收缩引起。 因此,当激活移动系统(3)时仅仅是弯曲运动,没有平移运动。 为了提供移动系统(3)的有利的频率响应,它相对于移动特性被非对称地构建。 因此,这些模式一方面是频移,另一方面影响较小。 因此,本发明的扬声器(1)的频率响应在频率响应中具有较小的上升和下降。 移动系统(3)的具体设计优选地通过使用基于有限元法的计算机模拟来完成。 在优选实施例中,移动系统(3)的局部顺从性和/或形状相对于移动系统(3)的平面中的任何点是不对称的。