专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20100052447A1 HYDRODYNAMIC BEARING DEVICE, SPINDLE MOTOR, AND INFORMATION DEVICE 审中-公开
标题翻译：水动力轴承装置，主轴电机和信息装置
公开(公告)号：US20100052447A1
公开(公告)日：2010-03-04
申请号：US12548855
申请日：2009-08-27
申请人： Yosuke KADOYA , Takafumi Asada , Tsutomu Hamada , Katsuo Ishikawa
发明人： Yosuke KADOYA , Takafumi Asada , Tsutomu Hamada , Katsuo Ishikawa
IPC分类号： H02K5/167 , F16C32/06
摘要： The hydrodynamic bearing device has a sleeve composed of a sintered material and having a compression-absorbing space inside the sleeve, the sleeve having a bearing hole in the center thereof; a shaft rotatably inserted into the bearing hole; a bearing portion formed between the bearing hole and the shaft; a hydrodynamic groove formed on at least one of the internal peripheral surface of the bearing hole and the external peripheral surface of the shaft; a concavity having one or more steps and formed to one end of the sleeve in the axial direction; a convexity formed to the other end of the sleeve in the axial direction, the convexity having a shape similar to the concavity; and a lubricating fluid filled in the gap of the bearing portion. The hydrodynamic bearing device has a readily obtainable predetermined shape precision, the internal density of the sintered material is made uniform, and lubricating fluid therein does not leak from the surface.
摘要翻译：流体动力轴承装置具有由烧结材料构成的套筒，在套筒内部具有压缩吸收空间，套筒的中心具有轴承孔; 可旋转地插入到所述轴承孔中的轴; 形成在所述轴承孔和所述轴之间的轴承部; 形成在所述轴承孔的内周面和所述轴的外周面的至少一个上的流体动力槽; 具有一个或多个台阶并且沿轴向方向形成在套筒的一端的凹面; 在轴向方向上形成于套筒另一端的凸部，凸部具有与凹部相似的形状; 以及填充在轴承部分的间隙中的润滑流体。流体动力轴承装置具有容易获得的预定形状精度，烧结材料的内部密度均匀，并且其中的润滑流体不会从表面泄漏。

2. 外观设计

USD580592S1 Piezoelectric device 有权
公开(公告)号：USD580592S1
公开(公告)日：2008-11-11
申请号：US29292405
申请日：2007-10-11
申请人： Akitoshi Hara , Katsuo Ishikawa , Yukihiro Tonegawa
设计人： Akitoshi Hara , Katsuo Ishikawa , Yukihiro Tonegawa

3. 发明申请

US20070092171A1 Hydrodynamic bearing device and manufacturing method thereof 审中-公开
标题翻译：流体动力轴承装置及其制造方法
公开(公告)号：US20070092171A1
公开(公告)日：2007-04-26
申请号：US11521362
申请日：2006-09-15
申请人： Takafumi Asada , Tsutomu Hamada , Masato Morimoto , Katsuo Ishikawa
发明人： Takafumi Asada , Tsutomu Hamada , Masato Morimoto , Katsuo Ishikawa
IPC分类号： F16C32/06
摘要： A hydrodynamic bearing having a high performance and a long life and a manufacturing method for the same are provided by forming hydrodynamic grooves to have a sufficient depth with a high accuracy, and sealing remaining pores on a bearing surface. A shaft is inserted into a bearing hole of a sleeve so as to be relatively rotatable. The bearing hole has a bearing surface having hydrodynamic grooves. The sleeve is formed by: forming metal powder to have a hollow cylindrical shape, sintering the metal powder; inserting a core rod in a pattern having a tapered surface into a bore of the sintered metal material; forming an inner surface having hydrodynamic grooves by pressing the sintered metal material from upper, lower and outer peripheral direction; inserting a core rod having a wide diameter portion and a narrow diameter portion into the bore of the sintered metal material to form the bearing bore surface of a hydrodynamic groove with the small diameter portion and to form the sleeve inner surface with the wide diameter portion at the same time; and removing the core rod from bore of the sintered metal material to have the inner periphery formed as such as the bearing inner surface and a large diameter portion as a lubricating fluid reservoir. Thus, grooves can be processed with a high accuracy.
摘要翻译：具有高性能和长寿命的流体动力轴承及其制造方法通过以高精度形成流体动力槽以具有足够的深度并且在轴承表面上密封剩余的孔来提供。将轴插入到套筒的轴承孔中以相对旋转。轴承孔具有具有流体动力槽的支承表面。该套筒通过以下方式形成：将金属粉末形成为具有中空圆柱形状，烧结金属粉末; 将具有锥形表面的图案的芯棒插入所述烧结金属材料的孔中; 通过从上，下和外周向压制烧结金属材料形成具有流体动力槽的内表面; 将具有宽直径部分和窄直径部分的芯棒插入烧结金属材料的孔中以形成具有小直径部分的流体动力槽的轴承孔表面，并且形成具有宽直径部分的套筒内表面同一时间; 并且将所述芯棒从所述烧结金属材料的孔中移除以使得所述内周形成为所述轴承内表面，并且所述大直径部分形成为润滑油储存器。因此，可以高精度地加工凹槽。

4. 发明申请

US20110133605A1 PIEZOELECTRIC DEVICE 失效
标题翻译：压电器件
公开(公告)号：US20110133605A1
公开(公告)日：2011-06-09
申请号：US12958642
申请日：2010-12-02
申请人： Katsuo ISHIKAWA , Akitoshi HARA
发明人： Katsuo ISHIKAWA , Akitoshi HARA
IPC分类号： H01L41/053
CPC分类号： H03H9/1035 , G01C19/5607 , H01L41/053 , H01L41/107 , H03B5/32 , H03H9/1021 , H03H9/19 , H03H9/21
摘要： A piezoelectric device includes: a piezoelectric vibrating reed; and a package, wherein the piezoelectric vibrating reed has a vibrating part and first and second supporting arms extending from a base end part, the package has a base, a lid, a cavity defined by the base and the lid, a convex part projecting from the base or the lid into the cavity, a length of the first supporting arm is shorter than a length of the second supporting arm, and the convex part is provided in a range ahead of a leading end of the first vibrating arm in an extension direction of the first supporting arm and at least partially overlapping with the second supporting arm in a length direction of the piezoelectric vibrating reed so as not to overlap with the piezoelectric vibrating reed in a plan view.
摘要翻译：压电装置包括：压电振动片; 以及包装体，其中，所述压电振动片具有振动部，从所述基端部延伸的所述第一支撑臂和所述第二支撑臂，所述封装具有基部，盖，由所述基部和所述盖限定的空腔，所述基座或所述盖进入所述空腔，所述第一支撑臂的长度比所述第二支撑臂的长度短，并且所述凸部设置在所述第一振动臂的前端的延伸方向前方的范围内并且在压电振动片的长度方向上至少部分地与第二支撑臂重叠，以便在俯视图中不与压电振动片重叠。

5. 发明申请

US20090060403A1 SLEEVE FOR HYDRODYNAMIC BEARING DEVICE, HYDRODYNAMIC BEARING DEVICE EQUIPPED WITH SAME, SPINDLE MOTOR, INFORMATION PROCESSING APPARATUS, AND METHOD FOR MANUFACTURING SLEEVE FOR HYDRODYNAMIC BEARING DEVICE 审中-公开
标题翻译：用于水动力轴承装置的套筒，具有相同装置的水动力轴承装置，主轴电机，信息处理装置以及用于制造用于水动力轴承装置的套筒的方法
公开(公告)号：US20090060403A1
公开(公告)日：2009-03-05
申请号：US12187689
申请日：2008-08-07
申请人： Tsutomu HAMADA , Katsuo ISHIKAWA , Takafumi ASADA
发明人： Tsutomu HAMADA , Katsuo ISHIKAWA , Takafumi ASADA
IPC分类号： F16C32/06
CPC分类号： F16C33/12 , F16C33/107 , F16C33/122 , F16C2370/12
摘要： A sleeve for a hydrodynamic bearing device, a hydrodynamic bearing device equipped with the sleeve, a spindle motor, information recording and reproducing and processing apparatus, and a method for manufacturing a sleeve for a hydrodynamic bearing device are provided that are capable of reducing costs through appropriate sealing treatment.The sleeve for a hydrodynamic bearing device has an inner layer and a surface layer. The inner layer is formed by sintering metal powder for sintering use. The surface layer is formed on a surface of the inner layer and includes diiron trioxide (Fe2O3). Sealing treatment is carried out by forming a surface layer including diiron trioxide (Fe2O3) on a surface of a sleeve for a hydrodynamic bearing device that is porous.
摘要翻译：用于流体动力轴承装置的套筒，装备有套筒的流体动力轴承装置，主轴电动机，信息记录和再现和处理装置以及用于制造用于流体动力轴承装置的套筒的方法，其能够通过适当的密封处理。用于流体动力轴承装置的套筒具有内层和表面层。内层通过烧结用于烧结的金属粉末形成。表面层形成在内层的表面上，并且包括三氧化二铁（Fe 2 O 3）。通过在多孔的流体动力轴承装置的套筒的表面上形成包含三氧化二铁（Fe 2 O 3）的表面层进行密封处理。

6. 发明申请

US20080315727A1 PIEZOELECTRIC RESONATOR, MANUFACTURING METHOD THEREOF AND LID FOR PIEZOELECTRIC RESONATOR 失效
标题翻译：压电谐振器及其制造方法及其用于压电谐振器
公开(公告)号：US20080315727A1
公开(公告)日：2008-12-25
申请号：US12141187
申请日：2008-06-18
申请人： Katsuo Ishikawa , Akitoshi Hara , Yukihiro Tonegawa
发明人： Katsuo Ishikawa , Akitoshi Hara , Yukihiro Tonegawa
IPC分类号： H01L41/00 , H01L41/22
CPC分类号： H03H9/21 , H03H9/1021 , H03H9/215 , Y10T29/42
摘要： A piezoelectric resonator includes a piezoelectric resonator element having a resonating arm and a metal film that is formed on the resonating arm; a package including a bottom part on which the piezoelectric resonator element is fixed and a frame wall that surrounds the bottom part, and having an opening above the bottom part; and a lid including a frame in which a through hole is provided and an optically transparent part that has an upper face and a lower face of the frame and is disposed at the through hole, the through hole penetrating a front face and a back face, the lower face of the optically transparent part being disposed so as to oppose the metal film, and the lid closing the opening of the package such that the lid overlaps with the bottom part and the frame wall, the through hole having a curved inner wall face whose curved face is coupled with at least one of the front face and the back face at least one opening edge of the front face and the back face and a vertical inner wall face that is provided vertical to the front face and the back face and in a part of a thickness direction of the frame, and the optically transparent part being provided so as to contact closely with at least a part of the vertical inner wall face and at least a part of the curved inner wall face.
摘要翻译：压电谐振器包括具有谐振臂和形成在谐振臂上的金属膜的压电谐振元件; 包括固定有压电谐振元件的底部和围绕底部的框架壁，并且在底部上方具有开口的封装; 以及盖，其包括设置有通孔的框架和具有框架的上表面和下表面并设置在通孔的光学透明部分，所述通孔穿透前表面和后表面，光学透明部分的下表面被设置为与金属膜相对，并且盖关闭包装的开口，使得盖子与底部部分和框架壁重叠，该通孔具有弯曲的内壁面其曲面与前表面和后表面中的至少一个前表面和后表面的至少一个开口边缘和垂直于前表面和后表面设置的垂直内壁面相连接，框架的厚度方向的一部分，并且光学透明部分设置成与垂直内壁面的至少一部分和弯曲的内壁面的至少一部分紧密接触。

7. 发明申请

US20070086686A1 Hydrodynamic bearing device and spindle motor that makes use of same 有权
标题翻译：使用流体动力轴承装置和主轴电机
公开(公告)号：US20070086686A1
公开(公告)日：2007-04-19
申请号：US11443014
申请日：2006-05-31
申请人： Katsuo Ishikawa , Tsutomu Hamada
发明人： Katsuo Ishikawa , Tsutomu Hamada
IPC分类号： F16C32/06
CPC分类号： F16C33/103 , F16C17/026 , F16C17/107 , F16C33/107 , F16C2370/12 , H02K7/085 , H02K7/086
摘要： To generate the desired dynamic pressure with an inexpensive structure. A hydrodynamic bearing device comprises a sleeve 1, a shaft 2, and oil 100. With the sleeve 1, a stepped portion 1b provided at one end and an inner peripheral face 1e extending linearly in the axial direction and continuously with the stepped portion 1b are formed by a working method that involves the use of a metal mold. The shaft 2 is inserted so as to be capable of relative rotation in the inner peripheral face 1e of the sleeve 1. The oil 100 fills the space formed between the inner peripheral face 1e of the sleeve 1 and the outer peripheral face 2a of the shaft 2. Dynamic pressure generation grooves 9a and 9b, which open in the axial direction at at least one end in the axial direction of the inner peripheral face 1e and are continuous in the axial direction from one end, are formed in the inner peripheral face 1e.
摘要翻译：以廉价的结构产生所需的动态压力。流体动力轴承装置包括套筒1，轴2和油100。利用套筒1，通过使用金属模具的工作方法，形成设置在一端的阶梯部分1b和沿轴向线性延伸并与台阶部分1b连续的内周面1e。轴2被插入以能够在套筒1的内周面1e中相对旋转。油100填充形成在套筒1的内周面1e和轴2的外周面2a之间的空间。在内周面1e的轴向的至少一端沿轴向开口且从一端沿轴向连续的动压发生槽9a和9b形成在内周面 1 e。

8. 发明申请

US20060158060A1 Spindle motor 失效
公开(公告)号：US20060158060A1
公开(公告)日：2006-07-20
申请号：US11315310
申请日：2005-12-23
申请人： Katsuo Ishikawa , Tsutomu Hamada
发明人： Katsuo Ishikawa , Tsutomu Hamada
IPC分类号： H02K1/22
CPC分类号： H02K5/1675 , H02K1/02 , H02K1/146 , H02K5/00
摘要： A spindle motor including a rotor hub which is rotationally driven by a magnetic action of a rotational magnetic field generated when a current is applied to a wire wound around teeth of a stator core and a magnetic field of a magnet provided on a rotor. Herein, the stator core formed by laminating magnetic steel plates is mounted to an outer periphery of a supporting part of a rotation support shaft of the rotor hub, and the supporting part is made of sintered metal containing a ferromagnetic material. This spindle motor can suppress generation of vibration and noise even when it is reduced in size.

9. 发明授权

US08134283B2 Vibrating element and vibrator 失效
标题翻译：振动元件和振动器
公开(公告)号：US08134283B2
公开(公告)日：2012-03-13
申请号：US12706451
申请日：2010-02-16
申请人： Akinori Yamada , Katsuo Ishikawa , Shuhei Yoshida
发明人： Akinori Yamada , Katsuo Ishikawa , Shuhei Yoshida
IPC分类号： H01L41/04
CPC分类号： H03H9/02102 , H03H9/02834 , H03H9/0509 , H03H9/1021 , H03H9/131 , H03H9/14541 , H03H9/21 , H03H9/215
摘要： A vibrating element includes: a vibrating body having frequency temperature dependency; and a temperature characteristic correcting part provided on a surface of the vibrating body. The temperature characteristic correcting part has a temperature characteristic of at least one of a Young's modulus and a thermal expansion coefficient and is expressed by a temperature characteristic curve which has at least one of an inflection point and an extremal value. In the vibrating element, a temperature of at least one of the inflection point and the extremal value is within an operating temperature range of the vibrating body.
摘要翻译：振动元件包括：具有频率温度依赖性的振动体; 以及设置在振动体的表面上的温度特性校正部。温度特性校正部具有杨氏模量和热膨胀系数中的至少一个的温度特性，并且由具有拐点和极值中的至少一个的温度特性曲线表示。在振动元件中，拐点和极值中的至少一个的温度在振动体的工作温度范围内。

10. 发明授权

US07714484B2 Piezoelectric resonator and manufacturing method therefor 失效
标题翻译：压电谐振器及其制造方法
公开(公告)号：US07714484B2
公开(公告)日：2010-05-11
申请号：US12143966
申请日：2008-06-23
申请人： Akitoshi Hara , Katsuo Ishikawa , Yukihiro Tonegawa
发明人： Akitoshi Hara , Katsuo Ishikawa , Yukihiro Tonegawa
IPC分类号： H01L41/08
CPC分类号： H03H9/21 , H03H9/0595 , H03H9/1021 , Y10T29/42
摘要： A piezoelectric resonator includes a piezoelectric resonator element having a base portion and a resonating arm extending from the base portion, a package including a bottom to which the piezoelectric resonator element is fixed and a frame wall that surrounds the bottom and having an opening above the bottom, and a lid for closing the opening of the package. In this piezoelectric resonator, the lid includes a main body having a through-hole formed therein, a flange formed to surround a periphery of the main body and to be thinner than the main body, and an optically transparent member located in the through-hole. The flange has a joining portion with an upper end surface of the frame wall, and the main body projects in a direction from the flange to the bottom in a thickness direction. Also, the through-hole is at a position displaced in a first direction approaching a first end of the main body from a center of the main body. Also, the flange is joined with the frame wall such that a clearance between the first end and the joining portion of the flange nearest to the first end is larger than a clearance between a second end in a second direction opposite to the first direction of the main body and the joining portion of the flange nearest to the second end.
摘要翻译：压电谐振器包括压电谐振元件，其具有基部和从基部延伸的谐振臂，包括固定有压电谐振元件的底部的封装和围绕底部并且在底部上方具有开口的框架壁，以及用于封闭包装的开口的盖子。在该压电谐振器中，盖包括：主体，其中形成有通孔，形成为围绕主体的周边并且比主体更薄的凸缘，以及位于通孔中的光学透明构件。凸缘具有与框架壁的上端表面相连的接合部分，并且主体在厚度方向上从法兰到底部的方向突出。此外，通孔位于从主体的中心接近主体的第一端的第一方向位移。此外，凸缘与框架壁接合，使得最靠近第一端的凸缘的第一端和接合部之间的间隙大于在与第一端相反的第二方向上的第二端之间的间隙主体和最接近第二端的凸缘的接合部分。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式