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21. 发明专利

JPS6337587B2 失效
公开(公告)号：JPS6337587B2
公开(公告)日：1988-07-26
申请号：JP18538381
申请日：1981-11-20
申请人： HITACHI LTD
发明人： HASEGAWA KENGO , ASABUKI HIROSHI , YOSHIZAKI MASANORI , MORIOKA HIKOYA , SHINOZUKA HIDEKI , FUJITA HAJIME
IPC分类号： H02K5/20 , H02K9/06

22. 发明专利

JPS62218691A BLOWER 失效
公开(公告)号：JPS62218691A
公开(公告)日：1987-09-26
申请号：JP5911386
申请日：1986-03-19
申请人： HITACHI LTD
发明人： SEKINE YOJI , FUJITA HAJIME , TAKADA YOSHIHIRO
IPC分类号： F04D17/04
摘要： PURPOSE:To improve vertical suction distribution by swirl control while increasing wind amount by providing a swirl controlling means capable of passing the swirl on a plane, opposed to a through fan, of a casing partitioning the through fan into the intake and jet sides. CONSTITUTION:A first rigid swirl 5 produced in a certain position has a swirl region from the center position O to the body surfaces 7b of a front casing 7 while the highest circulation speed position 5a is on a circle passing through tips of small projections 7a... provided on a plane opposed to a through fan 1 to form a small swirl and reduce the speed. The decelerated flow of the second rigid swirl 6 reaches a region opposed to the lower portion of a heat exchanger 3 to reduce the intake speed. And the circulation of the second rigid swirl 6 is absorbed and annihilated in the highest flow speed section 5a of the first rigid swirl 5 has the swirl 6 reaches the opposite side of the front casing 7 to provide a longitudinally long elliptic swirl region. Thus, effective flow path in an impeller 1 becomes better than the conventional one and further intake from above the heat exchanger 3 is intensified so that the vertical intake distribution is improved while wind amount can be increased.

23. 发明专利

JPS60137674A PRINTER 失效
公开(公告)号：JPS60137674A
公开(公告)日：1985-07-22
申请号：JP24394883
申请日：1983-12-26
申请人： HITACHI LTD
发明人： FUJITA HAJIME , IWASE KOUJI , HARADA MINEO
IPC分类号： B41J29/38 , B41J11/02
摘要： PURPOSE:To enhance efficiency and reduce noise, by a method wherein a head guide rail is vibrated by an ultrasonic vibrator to vibrate a head, and the ultrasonic vibration is transmitted to a platen by a vibration-transmitting element. CONSTITUTION:Electrical vibrational energy generated by an oscillator 6 and a power amplifier 7 is impressed on the ultrasonic vibrator 17 through a change- over switch 18, and is amplified by a transformer 16 to excite ultrasonic vibration 20 in a driving rail 11. A carriage 10 and the head 3 are moved along the guide rail 4. The ultrasonic vibration 20 is used for driving the carriage 10, is then transmitted to the platen 5 through the vibration-transmitting element 19, is absorbed by a vibrator 14 through a transformer 15, and is converted into thermal energy by a resistor 13.

24. 发明专利

JPS59210141A Construction of vibration dampening structure 失效
标题翻译：振动阻尼结构的构造
公开(公告)号：JPS59210141A
公开(公告)日：1984-11-28
申请号：JP8421883
申请日：1983-05-16
申请人： Hitachi Ltd , Hitachi Eng Co Ltd
发明人： HASEGAWA KENGO , MORIMOTO HIROSHI , FUJITA HAJIME , NISHIBE KUNIHIKO , IGAWA KEINOSUKE
IPC分类号： E04B1/98 , F16F15/02

25. 发明专利

JPS59172952A Housing ventilation type rotary electric machine 失效
标题翻译：通风式旋转电机
公开(公告)号：JPS59172952A
公开(公告)日：1984-09-29
申请号：JP4413683
申请日：1983-03-18
申请人： Hitachi Ltd
发明人： TAKADA YOSHIHIRO , FUJITA HAJIME , DOI NOBUYUKI
IPC分类号： H02K9/06 , H02K9/14
CPC分类号： H02K9/14
摘要： PURPOSE:To reduce the noise of a cooling fan and to improve the cooling effect by providing a recess groove on the part of an end bracket in a radial direction and on the entire periphery in a circumferential direction, and mounting the outer peripheral side end of a main stream passage of a cooling fan core plate on this part. CONSTITUTION:A cooling fan which has a blade 4 and a core plate is mounted on a rotational shaft 3, through which an end bracket 2 is passed in a space formed of a fan cover 1 and the bracket 2. Heats which are generated at a bearing 6, a stator 7, a rotor 8 and a stator coil 12 are transmitted to the bracket 2, a frame 9, or a heat skin fin on the outer surface of the frame. Simultaneously, cooling air sucked from a vent hole 14 by the fan flows between heat skin fins 13. The radial part of the bracket 2 has a recess on the outside of an apparatus, and the outer peripheral side end face of the main stream passage of the core plate of the fan is introduced into the recess.
摘要翻译：目的：为了减少冷却风扇的噪音，并且通过在端部支架的一部分沿径向和周向上的整个周边设置凹槽，来提高冷却效果，并且将外周侧的端部该部件上的冷却风扇芯板的主流通道。构成：具有刀片4和芯板的冷却风扇安装在旋转轴3上，末端托架2通过该旋转轴3在由风扇盖1和支架2形成的空间中通过。在一个轴承6，定子7，转子8和定子线圈12在框架的外表面上传递到支架2，框架9或热表皮。同时，风扇从通气孔14吸入的冷却空气在热皮肤散热片13之间流动。支架2的径向部分在设备的外侧具有凹槽，主流道的外周侧端面将风扇的芯板引入凹部。

26. 发明专利

JPS5951198A Axial fan 失效
标题翻译：轴风扇
公开(公告)号：JPS5951198A
公开(公告)日：1984-03-24
申请号：JP15949082
申请日：1982-09-16
申请人： Hitachi Ltd
发明人： SUGA MASAYUKI , ASHIHARA KEIGAN , ASABUKI HIROSHI , FUJITA HAJIME
IPC分类号： F04D29/38 , F04D29/66
CPC分类号： F04D29/663
摘要： PURPOSE:To reduce noise by gradually reducing the distance from the impeller shaft center to the outer peripheral edge, at the section from the point adjacent to the fan-guide suction side end surface toward the delivery side, and reducing the area of the part affected by the turbulent-flow area of the blade. CONSTITUTION:The distance of the outer peripheral edge of a fan blade 1 from the impeller shaft center is gradually reduced at the peripheral edge 1B section from the point adjacent to a fan guide suction side end surface 2A toward the delivery side. Thereby, even if a parameter DELTAx/x indicating a positional relation between a fan blade 1 and a fan guide 2, being define by a ratio of a distance DELTAx from the end of the suction side to a length x in a direction parallel to the center of the shaft of the fan blade 1, is small to some extent, providing sufficiently high static pressure in the medium wind area, the noise is reduced since the area of the part affected by the turbulent flow area 3 caused by the fan blade 1 is reduced.
摘要翻译：目的：通过逐渐减小从叶轮轴中心到外周边缘的距离，从靠近风扇引导件侧端面到出口侧的部分，减少部件受影响的面积，减少噪音通过叶片的湍流区域。构成：风扇叶片1的外周边缘与叶轮轴心的距离在周边边缘1B部分处从与风扇引导件吸入侧端面2A相邻的点朝向输送侧逐渐减小。由此，即使是表示风扇叶片1与风扇引导件2之间的位置关系的参数DELTAx / x，以与吸入侧的端部的距离DELTAx与平行于风扇叶片1的方向的长度x的比例来定义风扇叶片1的轴的中心在一定程度上较小，在介质风区域中提供足够高的静压力，由于风扇叶片1引起的受湍流区域3影响的部分的面积，噪音降低降低了。

27. 发明专利

JPS5833951A ROTARY ELECTRIC MACHINE 失效
公开(公告)号：JPS5833951A
公开(公告)日：1983-02-28
申请号：JP13008081
申请日：1981-08-21
申请人： HITACHI LTD
发明人： TAKADA YOSHIHIRO , FUJITA HAJIME , HASEGAWA KENGO , YOSHIZAKI MASANORI
IPC分类号： H02K9/06 , H02K9/22
摘要： PURPOSE:To reduce the noise of a rotary electric machine without reducng the cooling efficiency by bending solely or in a laminated state a split ring-shaped radiating plate and mounting the plate. CONSTITUTION:Blades 7 are provided at one end side of a rotor 2, and cooling ventilating means 13 is provided at the other end side. The means 13 has a plurality of split ring-shaped radiating plates 14a-14c, which radiate the heat generated at the rotor 2 upon rotation of the rotor so that the heat can be escaped upwardly by the split parts formed at the plates 14a-14c. In this manner, the noise can be reduced without reducing the cooling efficiency.

28. 发明专利

JPS52142312A AXIAL BLOWER 失效
公开(公告)号：JPS52142312A
公开(公告)日：1977-11-28
申请号：JP5776376
申请日：1976-05-21
申请人： HITACHI LTD
发明人： FUJITA HAJIME
IPC分类号： F04D25/02 , F04D29/32
摘要： PURPOSE:Axial blower in which a gas is flowed smoothly without contacting to a driving motor and a low noise due to interference between a flow of gas and a driving part is found by arranging the driving motor outside an outer circumference of a vane whell.

29. 发明专利

JPH07322408A LOW-NOISE CURRENT COLLECTOR 失效
公开(公告)号：JPH07322408A
公开(公告)日：1995-12-08
申请号：JP15298695
申请日：1995-06-20
申请人： HITACHI LTD
发明人： SEHATA MICHIO , TERADA KATSUYUKI , HIGAKI HIROSHI , FUJITA HAJIME , HATTORI MORISHIGE , TSURUTA HITOSHI , HIROSE SUSUMU
IPC分类号： B61D49/00 , B60L5/22
摘要： PURPOSE:To reduce the noise by rotatably supporting a supporting pillar having a comparatively large cross section supported by a base frame on an insulator on a car body roof, and raising and lowering a shoe supporting substance for enclosing a current collecting sliding board, a shoe, and a horn at the upper end of the supporting pillar with a linking mechanism. CONSTITUTION:Insulators (3a), 3b, (3c), and 3d are fixed with insulator legs (2a), 2b, (2c), 2d on a car body roof 1. A supporting pillar 5 is supported horizontally with base frames (4a) and 4b rotatably by the aid of a holding means 6, and rotates in the proceeding direction A of a car, and its lower part has a streamline shape. Inside the supporting pillar 5, a supporting pillar 8 whose upper part is in a streamline shape is provided. Between the supporting pillars 5 and 8, an expanding means 9 composed of a hydraulic cylinder is provided, and constitutes an elastically supporting means having a lift controlling function. Shoes 10a and 10b are arranged in parallel at an interval in the proceeding direction of the car, and supported with a lever member 10S. Shoes 11a and 11b and a lever member 11S are put in a streamline-shaped shoe supporting substance 11, and rotate by the use of a pin 12. Consequently, it becomes possible to reduce the noise in cource of running at a high speed.

30. 发明专利

JPH0549104A CURRENT COLLECTOR 失效
公开(公告)号：JPH0549104A
公开(公告)日：1993-02-26
申请号：JP19915891
申请日：1991-08-08
申请人： HITACHI LTD
发明人： TERADA KATSUYUKI , SEHATA MICHIO , HIGAKI HIROSHI , FUJITA HAJIME , HATTORI MORISHIGE , TSURUTA HITOSHI , HIROSE SUSUMU
IPC分类号： B60L5/08 , B60L5/12
摘要： PURPOSE:To reduce noise by holding a current collector on a streamline support at the uppermost stage of a telescopic mechanism fixed to a roof insulator thereby keeping an insulation distance between the bottom and the roof of the telescopic mechanism. CONSTITUTION:A multi-stage telescopic cylinder 9 is born by two insulators 16 fixed to the roof 15 of a vehicle. A current collector comprising a slider 2, a slider seat 3, a supporting spring 4, a collector shoe 5, and the like is surrounded and supported by a shoe support 7. The support 7 has vertical dimensions several times as large as those of the collector shoe 5 and fabricated in streamline, and the support 7 is fixed through a spring 8 to the cylinder 9 at the uppermost stage. The cylinder 9 has circular linestream horizontal cross-section and incorporates a pantograph link 10 being telescoped by means of an actuator 14 comprising an arm 11, a spring 12 and a damper 13. The cylinder 9 extends to bring the slider 2 into pressure contact with a stringing 1 and then it is contracted and contained between the insulators 16. Consequently, noise is reduced.

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