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    • 1. 发明授权
    • Micromechanical relay having a hybrid drive
    • 具有混合驱动器的微机电继电器
    • US5666258A
    • 1997-09-09
    • US505312
    • 1995-08-17
    • Hans-Jurgen GevatterLothar KiesewetterJoachim SchimkatHelmut Schlaak
    • Hans-Jurgen GevatterLothar KiesewetterJoachim SchimkatHelmut Schlaak
    • H01H1/20H01H1/50H01H57/00H01H59/00
    • H01H57/00H01H59/0009H01H1/20H01H1/50H01H2001/0057H01H2001/0084H01H2057/006H01H2059/0081
    • A micromechanical relay is provided having a cantilevered armature (53) which is etched out from an armature substrate (52). The armature is in the form of a tongue, is elastically connected to the armature substrate, and forms an electrostatic drive with a base electrode (58) of a base substrate (51) located underneath. In addition, a piezo-layer (60) is provided on the armature (53). The piezo-layer (60) acts as a bending transducer and forms a supplemental actuator for a quick response time. When a voltage is applied to the electrodes of the armature (53), base substrate (51) and piezo-layer (60), the armature is attracted toward the base substrate and then rests over a large area on the base, closing at least one contact (55, 56). The different characteristics of the electrostatic actuator, on the one hand, and of the piezo-drive, on the other hand, are complementarily combined to provide a strong attraction force at the start of the armature movement, and a strong contact force is produced after the armature has been attracted.
    • PCT No.PCT / DE94 / 00152 Sec。 371日期:1995年8月17日 102(e)日期1995年8月17日PCT 1994年2月14日PCT PCT。 第WO94 / 19819号公报 日期1994年8月1日提供了具有从电枢基板(52)蚀刻出的悬臂电枢(53)的微机电继电器。 衔铁呈舌状,弹性地连接到电枢基片上,并与位于下方的基底基片(51)的基极(58)形成静电驱动。 此外,在电枢(53)上设置压电层(60)。 压电层(60)用作弯曲换能器并形成用于快速响应时间的辅助致动器。 当向电枢(53),基底(51)和压电层(60)的电极施加电压时,电枢被吸引到基底衬底上,然后搁置在基底上的大面积上,至少闭合 一个联系人(55,56)。 另一方面,静电致动器和压电驱动的不同特征互补地组合,以在电枢运动开始时提供强烈的吸引力,并且在电枢运动开始之后产生强的接触力 电枢已被吸引。