公开(公告)号：US06602051B2

公开(公告)日：2003-08-05

申请号：US09833583

申请日：2001-04-13

申请人： Hiroyasu Fujinaka

发明人： Hiroyasu Fujinaka

IPC分类号： F04D2952

CPC分类号： F04D25/08 ,  F04D25/0613 ,  Y10S415/915

摘要： A blowing apparatus with improved energy efficiency, comprising: a circular wall formed at a distance from a blade end of a fan; a first region where an inner diameter is enlarged so that a clearance with the blade end becomes substantially wide, and a second region having a narrower clearance with the blade end and formed with a slit, both regions being on a suction side of the circular wall; and an air pocket portion provided between an outer circumference of the circular wall and an outer peripheral portion of the housing.

摘要翻译： 一种具有提高能量效率的吹风装置，包括：与风扇叶片一端距离形成的圆形壁; 第一区域，其内径扩大，使得与刀片端部的间隙变得基本宽，以及与刀片端部具有较窄间隙并形成有狭缝的第二区域，两个区域位于圆形壁的吸入侧 ; 以及设置在所述圆形壁的外周和所述壳体的外周部之间的气穴部。

公开(公告)号：US06365995B1

公开(公告)日：2002-04-02

申请号：US09499617

申请日：2000-02-07

申请人： Yoshiaki Fukuda ,  Koji Kuyama ,  Toshio Uehara ,  Kazuhito Itakura ,  Chiaki Yamamoto ,  Shigeru Yoshida ,  Hiroyasu Fujinaka ,  Mikio Umehara ,  Noriyoshi Sato

发明人： Yoshiaki Fukuda ,  Koji Kuyama ,  Toshio Uehara ,  Kazuhito Itakura ,  Chiaki Yamamoto ,  Shigeru Yoshida ,  Hiroyasu Fujinaka ,  Mikio Umehara ,  Noriyoshi Sato

IPC分类号： H02K706

CPC分类号： H02K5/00 ,  H02K5/225 ,  H02K7/063 ,  H02K2211/03

摘要： Brushless motors for portable information equipment that can be simultaneously reflow-soldered to a substrate and efficiently and densely mounted thereon in such a way that the coupled portion between the motor and the substrate has a high impact resistance, thereby providing small and reliable portable information equipment having a high productivity. The brushless motor including a housing having a bottom surface, a side surface, and a top surface, the bottom surface being located adjacent and opposite to a substrate of equipment; a plurality of lands (2a, 2e) on the bottom surface that can be mechanically or electrically joined with the substrate of the equipment; a stator (1), a bearing device (3), and a rotor (4) inside said housing, the stator (1) having a stator core (6) and a coil (7) wound around the stator core (6), the rotor (4) having a magnet (13) and being supported by the bearing device (3) so as to rotatably surround the periphery of the stator (1), the rotor (4) further including a circular weight (14).

公开(公告)号：US20050140225A1

公开(公告)日：2005-06-30

申请号：US10991422

申请日：2004-11-19

申请人： Hiroyasu Fujinaka ,  Kumio Masuda

发明人： Hiroyasu Fujinaka ,  Kumio Masuda

IPC分类号： H02K5/167 ,  F16C17/08 ,  F16C39/06 ,  G11B19/20 ,  H02K7/08 ,  H02K7/09 ,  H02K5/24 ,  H02K5/16

CPC分类号： G11B19/2009 ,  F16C17/08 ,  F16C39/063 ,  F16C2370/12 ,  H02K7/085 ,  H02K7/09

摘要： The present invention provides a low vibration brushless motor for reducing the vibration of the motor in an axial direction. In the brushless motor, a bearing is provided in a bearing boss, a shaft is held by the bearing, an end face of the shaft is contacting a thrust receiving member, and the shaft is rotatably axially supported by the bearing. The brushless motor includes a permanent magnet for attracting the end face of the shaft in the thrust direction with the thrust receiving member therebetween, and a bottom receiving part for supporting the permanent magnet, wherein the bearing boss, bearing, shaft, and bottom receiving part are made of a magnetic material, and a closed magnetic path is formed so that a magnetic flux passes through the permanent magnet, bottom receiving part, bearing boss, bearing, and shaft.

摘要翻译： 本发明提供一种用于减小电动机在轴向上的振动的低振动无刷电动机。 在无刷电动机中，轴承设置在轴承凸台中，轴由轴承保持，轴的端面接触推力接收构件，轴由轴承可旋转地轴向支撑。 无刷电动机包括永久磁铁，用于在推力方向上推动轴的端面，其间具有推力接收构件，以及用于支撑永磁体的底部容纳部，其中，轴承凸起，轴承，轴和底部容纳部 由磁性材料制成，并且形成闭合磁路，使得磁通量通过永磁体，底部接收部分，轴承凸起，轴承和轴。

公开(公告)号：US06750583B2

公开(公告)日：2004-06-15

申请号：US10668584

申请日：2003-09-23

申请人： Hiroyasu Fujinaka

发明人： Hiroyasu Fujinaka

IPC分类号： H02K100

CPC分类号： H02K29/03 ,  H02K21/22

摘要： A motor generating cogging torque has one-quarter the cycle of basic cogging torque and an extremely small absolute value. First, in order to reduce the cycle of the cogging torque to one-half the cycle of the basic cogging torque, a basic configuration of the core is determined by setting opening angles of its slots to an appropriate electrical angle ranging from 80° to 95° and from 20° to 35°. Next, to produce the above-mentioned effects, an angular displacement of one-quarter the cycle of the basic cogging torque is provided in the motor. Furthermore, polarizing the core with a skew angle equal to one-half or less the cycle of the basic cogging torque at the same time allows the cogging torque to be reduced effectively while decrease in efficiency is minimized.

公开(公告)号：US06747387B2

公开(公告)日：2004-06-08

申请号：US10668966

申请日：2003-09-23

申请人： Hiroyasu Fujinaka

发明人： Hiroyasu Fujinaka

IPC分类号： H02K100

CPC分类号： H02K29/03 ,  H02K21/22

摘要： A motor generating cogging torque has one-quarter the cycle of basic cogging torque and an extremely small absolute value. First, in order to reduce the cycle of the cogging torque to one-half the cycle of the basic cogging torque, a basic configuration of the core is determined by setting opening angles of its slots to an appropriate electrical angle ranging from 80° to 95° and from 20° to 35°. Next, to produce the above-mentioned effects, an angular displacement of one-quarter the cycle of the basic cogging torque is provided in the motor. Furthermore, polarizing the core with a skew angle equal to one-half or less the cycle of the basic cogging torque at the same time allows the cogging torque to be reduced effectively while decrease in efficiency is minimized.

公开(公告)号：US06572333B2

公开(公告)日：2003-06-03

申请号：US10005157

申请日：2001-12-07

申请人： Hiroyasu Fujinaka

发明人： Hiroyasu Fujinaka

IPC分类号： F04D2954

CPC分类号： F04D29/547 ,  F04D25/0613 ,  F04D29/667

摘要： It is an object of the present invention to improve energy efficiency of an air blower. An annular wall is formed to extend from a suction-side end of a housing body toward a discharge side of a blade tip of a fan so as to provide an air pocket between the housing body and the annular wall. Improvements are made to joint ends of spokes to the annular wall adjacent the air pocket, or to inclination directions of the spokes, thereby improving performance of the air blower or thinning the air blower.

公开(公告)号：US06183196B2

公开(公告)日：2001-02-06

申请号：US09311357

申请日：1999-05-13

申请人： Hiroyasu Fujinaka

发明人： Hiroyasu Fujinaka

IPC分类号： F04D2966

CPC分类号： F04D29/545 ,  F04D19/002 ,  F04D25/0613 ,  F04D29/526 ,  Y10S415/914

摘要： In a blower in which air is sucked to the inside through slits formed in an annular wall, the width w and the number of slits are so set that an air flow of 20 to 40% of the maximum air flow is sucked through the slits in a state in which the static pressure is zero. By this configuration, the fan stall inhibiting effect due to the air flow through the slits and the energy loss due to the viscosity of air yielded in the slits are balanced, whereby the efficiency of the blower can be improved.

摘要翻译： 在空气通过形成在环形壁中的狭缝向内部吸入的鼓风机中，宽度w和狭缝数量被设定为使得最大气流的20至40％的气流通过狭缝吸入 静压为零的状态。 通过这种构造，由于狭缝中的空气流动引起的风扇失速抑制效应和由狭缝中产生的空气的粘度引起的能量损失被平衡，从而可以提高鼓风机的效率。

公开(公告)号：US06179562B2

公开(公告)日：2001-01-30

申请号：US09355765

申请日：1999-08-04

申请人： Hiroyasu Fujinaka

发明人： Hiroyasu Fujinaka

IPC分类号： F04D2966

CPC分类号： F04D29/661 ,  F04D25/0613 ,  F04D29/164 ,  F04D29/526 ,  F04D29/545 ,  Y10S415/914

摘要： A blower comprising an annular wall (2) formed to be spaced from blade tips of a fan (1), the annular wall having slits (6) formed at a portion opposed to the blade tips to establish communication between inner and outer peripheral portions of the annular wall, so that air is sucked into the inner peripheral portion of the annular wall through the slits as the fan rotates, characterized in that the width w of a gap of the slit is changed in radial and circumferential directions thereof, whereby the quantity of air flowing into the inner peripheral portion of the annular wall through the slits is made substantially equal over the entire circumference. By this configuration, leakage vortexes flowing from the pressure side to the suction side at the blade tips are restrained, and the P-Q characteristics are improved. At the same time, noise produced in the annular wall having slits can be restrained, so that a low-noise blower can be realized.

摘要翻译： 一种鼓风机，包括形成为与风扇（1）的叶片尖部间隔开的环形壁（2），所述环形壁具有狭缝（6），所述狭缝形成在与所述叶片尖端相对的部分处以建立内部和外部周边部分之间的连通 环形壁，使得当风扇旋转时空气通过狭缝被吸入环形壁的内周部分，其特征在于，狭缝的间隙的宽度w在其径向和周向方向上改变，由此量 通过狭缝流入环形壁的内周部的空气在整个圆周上基本相等。 通过这种构造，抑制了从叶片顶端的压力侧向吸入侧的泄漏涡流，提高了P-Q特性。 同时，可以抑制在具有狭缝的环形壁中产生的噪声，从而可以实现低噪音的鼓风机。

公开(公告)号：US08553343B2

公开(公告)日：2013-10-08

申请号：US13158575

申请日：2011-06-13

申请人： Hiroyasu Fujinaka ,  Koichiro Hirabayashi ,  Kazuo Shibukawa

发明人： Hiroyasu Fujinaka ,  Koichiro Hirabayashi ,  Kazuo Shibukawa

IPC分类号： G02B5/22 ,  G02B7/00 ,  G03B9/00

CPC分类号： G02B27/0006 ,  G02B7/006 ,  G03B17/04 ,  H04N5/2171 ,  H04N5/2251

摘要： An imaging device support structure includes a master flange having an opening portion through which an optical axis passes, an imaging device which is directly or indirectly attached to the master flange and is positioned in the opening portion as viewed in an optical axis direction, and a shielding member which shields a gap between the master flange and the imaging device in the opening portion. The shielding member includes a slit or a groove and is pressed against an opening edge of the opening portion.

摘要翻译： 成像装置支撑结构包括具有光轴通过的开口部分的主凸缘，直接或间接附接到主凸缘并且沿光轴方向定位在开口部分中的成像装置，以及 屏蔽构件，其在开口部分中屏蔽主凸缘和成像装置之间的间隙。 遮蔽构件包括狭缝或槽，并且被压靠在开口部的开口边缘。