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    • 21. 发明公开
    • VALVES BASED ON REVERSIBLE PIEZOELECTRIC ROTARY MOTOR
    • AUF REVERSIERBAREM PIEZOELEKTRISCHEM DREHMOTOR BASIERENDE VENTILE
    • EP2394081A4
    • 2017-09-20
    • EP10739222
    • 2010-02-08
    • DISCOVERY TECH INT INC
    • PETRENKO SERHIYZHELYASKOV VALENTIN RANGELOV
    • F16K31/02F16K5/06F16K7/06F16K31/04H01L41/18H02N2/00
    • F16K31/004F16K5/0647F16K7/045H02N2/002H02N2/0065H02N2/103
    • A piezoelectric valve is provided that includes a valve body includes a plug and a drive body coupled to the valve body and operable to cause the rotatable plug to rotate about a rotational axis. The drive body includes a shaft disposed along the axis, the shaft statically coupled to the plug and rotatably coupled to the drive body. The drive body also includes a rotor assembly disposed about the axis and rotatably coupled to the drive body. The drive body further includes a first piezoelectric actuator disposed about the axis and statically coupled to the drive body, the first piezoelectric actuator configured to frictionally engage an inner surface of the rotor assembly. The drive body additionally includes a second piezoelectric actuator disposed about the axis and statically coupled to the shaft, the second piezoelectric actuator configured to frictionally engage the inner surface of the rotor assembly.
    • 提供了一种压电阀,其包括阀体,该阀体包括插塞和联接到阀体并且可操作以使可旋转插塞围绕旋转轴线旋转的驱动体。 驱动主体包括沿着轴线设置的轴,轴静态地联接到插头并且可旋转地联接到驱动主体。 驱动体还包括围绕轴线设置并可旋转地联接到驱动体的转子组件。 所述驱动主体还包括第一压电致动器,所述第一压电致动器围绕所述轴线设置且静态地联接至所述驱动主体,所述第一压电致动器构造成摩擦接合所述转子组件的内表面。 所述驱动主体还包括第二压电致动器,所述第二压电致动器围绕所述轴线设置并静态地联接至所述轴,所述第二压电致动器构造成与所述转子组件的内表面摩擦接合。
    • 30. 发明公开
    • PIEZOELECTRIC DEVICE
    • PIEZOELEKTRISCHE VORRICHTUNG
    • EP2849342A4
    • 2015-11-04
    • EP13787154
    • 2013-03-14
    • DAISHINKU CORP
    • YANG LIYANNAKANISHI KENTARO
    • H03H9/10B06B1/06H01L41/053H01L41/09H01L41/18H03H9/02H03H9/05H03H9/13H03H9/17H03H9/19
    • H03H9/17B06B1/0648H01L41/053H03H9/02133H03H9/02157H03H9/0509H03H9/0514H03H9/0519H03H9/0523H03H9/1014H03H9/1021H03H9/132
    • The piezoelectric device according to the invention is provided with a rectangular crystal piece having driving electrodes on front and back main faces thereof, and a base member having two electrode pads near one short side of the crystal piece. The crystal piece is supported on the base member by first and second support portions near one short side thereof, and by an auxiliary support portion on the other short side thereof. A position of the auxiliary support portion relative to the other short side, where L is a distance between two short sides, and H is a distance from the other short side to a peripheral edge of the auxiliary support portion nearest to the other short side, is set to a position at which the distance H stays in a range of distances in which a maximum tensile stress acting on the auxiliary support portion and a maximum von Mises stress of the crystal piece are respectively within predetermined ranges of stress values. For a better resistance to impact, the position of the auxiliary support portion is set to a position at which a value of (H2+D)/L expressed in percentage is equal to or smaller than 20%, where H2 is a value included in the range of distances H in which these stresses are both maximized.
    • 根据本发明的压电装置设置有在其前后主驱动面上具有驱动电极的矩形晶体片,以及在该晶片的一个短边附近具有两个电极焊盘的基底部件。 该晶片通过靠近一个短边的第一和第二支撑部分和另一个短边上的辅助支撑部分支撑在基座构件上。 辅助支撑部分相对于另一个短边的位置,其中L是两个短边之间的距离,H是距辅助支撑部分的最靠近另一个短边的另一个短边到周边边缘的距离, 设定在距离H停留在作用在辅助支撑部上的最大拉伸应力和结晶片的最大von Mises应力的距离范围分别在预定应力值范围内的位置。 为了更好的抗冲击性,将辅助支撑部的位置设定为以(%+ D)/ L表示的百分比的值为20%以下的位置,其中H2为包含在 这些应力的两个距离H的范围都最大化。