公开(公告)号：US09835544B2

公开(公告)日：2017-12-05

申请号：US15060568

申请日：2016-03-03

Applicant: NHK SPRING CO., LTD.

Inventor： Hideki Kashima ,  Yuji Sugita ,  Takeshi Shimoda ,  Tsutomu Fukuda

IPC: G01N19/04 ,  G11B5/455 ,  G11B5/48

CPC classification number: G01N19/04 ,  G11B5/455 ,  G11B5/483 ,  G11B5/4853

Abstract: According to an embodiment, a bonding strength test device measures bonding strength between a flexure of a suspension of a hard disk drive and microactuators mounted on a gimbal of the flexure. The bonding strength test device includes a clamp, dummy, and device body. The clamp fixes the flexure. The dummy is adhered to the microactuators. The probe is engaged in the dummy. The device body measures a tensile load applied to the probe while the probe is pulled toward a direction to be apart from the flexure.

公开(公告)号：US08580334B2

公开(公告)日：2013-11-12

申请号：US13654731

申请日：2012-10-18

Applicant: NHK Spring Co., Ltd.

Inventor： Hideki Kashima

IPC: B05D5/12 ,  H01L41/22

CPC classification number: G11B5/4833 ,  G11B5/483 ,  G11B5/4873 ,  H01L41/047 ,  H01L41/29 ,  Y10T29/42

Abstract: An electrode structure of a piezoelectric element is provided. The piezoelectric element 23a (23b) constitutes a piezoelectric actuator 19 attached to an attaching part 30 of an object, to minutely move a movable part 15 of the object relative to a base part 13 of the object according to deformation occurring on the piezoelectric element in response to a power applied state of the piezoelectric element. The electrode structure in response an electrode 41a formed on one of a pair of electrode forming faces 31a and 31b of the piezoelectric element on an inner side of a peripheral zone 31a1, the peripheral zone being defined along the periphery of the electrode forming face 31a on which the electrode is formed. The electrode structure also includes a non-electrode part 51 formed in the peripheral zone. Even if the peripheral zone 31a1 of the electrode forming face 31a having a short-circuit causing possibility touches the attaching part 30, no short circuit occurs.

Abstract translation: 提供了压电元件的电极结构。 压电元件23a（23b）构成安装在物体的安装部30上的压电致动器19，根据压电元件上发生的变形，使物体的可动部15相对于物体的基部13微小地移动 响应于压电元件的施加电力的状态。 电极结构响应于形成在周边区域31a1的内侧上的压电元件的一对电极形成面31a和31b中的一个上的电极41a，周边区域沿着电极形成面31a的周边限定 电极形成。 电极结构还包括形成在周边区域中的非电极部分51。 即使具有短路的电极形成面31a的周边区域31a1与安装部30接触，也不会发生短路。