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. 发明专利

JPS59213114A Direct current reactor 失效
标题翻译：直接电流反应器
公开(公告)号：JPS59213114A
公开(公告)日：1984-12-03
申请号：JP8678683
申请日：1983-05-18
申请人： Hitachi Ltd
发明人： SAITOU SHIGEKI , SAKURAI KOUKICHI
IPC分类号： B60L3/00 , H01F37/00 , H01F38/02
CPC分类号： H01F38/023
摘要： PURPOSE:To obtain the DC reactor with which the inductance in a low current region can be increased by a method wherein a part of the magnetic path composed of a core is saturated by the maximum conductive current running to a conductive coil multiplied by a prescribed multiplier or less, thereby enabling to change the inductance by a current even in a high current region. CONSTITUTION:When narrow width parts 3, 4 and 5 are provided on a core, the characteristics same as the curved line (a) as shown in the diagram is indicated until the current I is increased to a certain degree as shown by curved lines (b), (c) and (d), and even thereafter, the characteristic curved line I-PHI which does not show saturation characteristic can be obtained. Accordingly, inductance makes a change by a current even in a high current region, and the inductance in a low current region can be increased considerably, thereby enabling to suppress current pulsation. The curved lines (b), (c) and (d) show the characteristic curved line when the size of W is made smaller in the order of the curved lines above-mentioned, and the size of W is determined in such a manner that the inductance L, which can be controlled when there is current Im at the maximum on-load state, can be obtained. At this time, the size of W is determined in such a manner that a magnetic path, which will be saturated by the current which is 1/3 or less of the maximum conductive current running to the conductive coil 10, will be obtained.
摘要翻译：目的：为了获得可以通过以下方法增加低电流区域中的电感的直流电抗器：其中由芯组成的磁路的一部分被通过导体线圈乘以规定乘数的最大导通电流饱和或者更小，从而即使在高电流区域也能够通过电流来改变电感。构成：当在芯上设置窄宽度部分3,4和5时，示出如图所示的与曲线（a）相同的特性，直到电流I如曲线所示那样增加到一定程度 b），（c）和（d），甚至此后，可以获得不显示饱和特性的特征曲线I-PHI。因此，即使在高电流区域中，电感也能够由电流进行变化，能够大幅提高低电流区域的电感，能够抑制电流脉动。曲线（b），（c）和（d）表示当W的尺寸按照上述曲线的顺序变小时的特征曲线，W的大小以如下方式确定：可以获得当在最大负载状态下存在电流Im时可以控制的电感L. 此时，W的大小以这样的方式来确定：将获得将被导通到线圈10的最大导通电流的1/3以下的电流饱和的磁路。

2. 发明专利

JPS58225520A Flow switch 失效
标题翻译：流量开关
公开(公告)号：JPS58225520A
公开(公告)日：1983-12-27
申请号：JP10686882
申请日：1982-06-23
申请人： Hitachi Ltd
发明人： SAITOU SHIGEKI , MIYAGAWA GENKOU
IPC分类号： G01F1/22 , H01H35/24 , H01H35/40

3. 发明专利

JPS57147928A BATTERY FORK LIFT 失效
公开(公告)号：JPS57147928A
公开(公告)日：1982-09-13
申请号：JP3134781
申请日：1981-03-06
申请人： HITACHI LTD
发明人： KOIZUMI OSAMU , SAITOU SHIGEKI
IPC分类号： B60K11/06 , B66F9/075
摘要： PURPOSE:To constantly maintain cooling function and improve cooling effect by driving a vane-wheel by the driving motor of the oil pump for steering and cooling the interior of the vehicle driving motor by the ventilation through the vane-wheel. CONSTITUTION:The pulley 7 is directly coupled with the rotating shaft of the driving motor 6 of the oil pump 5 for steering. And the vane-wheel 11 is loosely mounted to the one end of the rotational shaft 10 of rotor 9 of the vehicle driving motor 2, through the ball bearing 12 and its retainer 13. And a belt 8 is stretched over the said pulley 7 and the pulley portion 15 formed to the projected end of the boss of the said vane-wheel 11. Further, an air suction port 19 is installed to the rear bracket 18 of the casing 16, to flow the cooling air shown by the allow mark a, by the vane 12 of the vane-wheel 11.

4. 发明专利

JPS5797397A DRIVING DEVICE FOR VARIABLE SPEED MOTOR 失效
公开(公告)号：JPS5797397A
公开(公告)日：1982-06-17
申请号：JP17093980
申请日：1980-12-05
申请人： HITACHI LTD
发明人： SAITOU SHIGEKI , KOIZUMI OSAMU , KAWAMATA SHIYOUICHI
IPC分类号： H02H7/085 , H02K11/00 , H02P5/60 , H02P7/80
摘要： PURPOSE:To suitably control a main motor and a fan driving motor in response to the environmental temperature of the main motor by providing a high temperature sensor and a low temperature sensor, respectively performing specified operations. CONSTITUTION:A high temperature sensor 18 for detecting the temperature of a load driving main motor 1 operated at a variable speed arriving at the first specified temperature and stopping the energization of the main motor controlling current is provided at a variable speed motor having the motor 1 and a fan driving motor 12 independently controlled. Further, a low temperature sensor 19 for detecting the temperature of the main motor 1 arriving at the second specified temperature to drive the motor 12 and detecting the temperature of the motor 1 becoming the third specified temperature lower than the second specified temperature to stop the motor 12 is provided.

5. 发明专利

JPS56144846A PRODUCTION OF HOLLOW BALL FOR GRINDING MILL 失效
公开(公告)号：JPS56144846A
公开(公告)日：1981-11-11
申请号：JP4689280
申请日：1980-04-11
申请人： HITACHI LTD
发明人： OGAWA SATORU , SAITOU SHIGEKI , FUSHIMI TSUGIO
IPC分类号： B22C9/10 , B22C9/24
摘要： PURPOSE:To decrease head amount, reduce excess metal and reduce finishing process by deviating the center of a core used in production of hollow balls and forming the radius of curvature thereof smaller on the head side. CONSTITUTION:A spherical core 7 to be set in a main mold 3 is formed of a semispherical surface of a radius R1 centering at A on the semispherical side diameterally opposing to the head 8 side and a semispherical shape surface of which the radius of curvature is made gradually smaller on the head 8 side by being deviated from the center. Further, it is so formed that the diameter of the inscribed circle of the thick-walled part of the hollow ball 6 to be formed is gradually smaller toward the diametrally opposing side from the head 8 side. Since feeding effect is accelerated by the use of such core, the waste metal to be provided to the hollow ball is reduced by making the number of head one.

6. 发明专利

JPS5571149A COOLER FOR ROTARY ELECTRIC MACHINE 失效
公开(公告)号：JPS5571149A
公开(公告)日：1980-05-29
申请号：JP14351078
申请日：1978-11-22
申请人： HITACHI LTD
发明人： SAITOU SHIGEKI , SUGIURA YASUYUKI , MIYASHITA KUNIO
IPC分类号： H02K9/04 , H02K9/06
摘要： PURPOSE:To make a rotary electric machine compact as a whole and reinforce a fan integrated with an electroconductive ring, by providing a separate stator to drive the fan, placing the stator in a casing and setting the fan in face of the stator. CONSTITUTION:A stator 15, which is separate from the stator 8 of a main rotary electric machine and acts to drive a cooling fan 14, is mounted on the peripheral surface of a support part 18 or the like in a casing 2. The cooling fan 14 is movably fitted with a clearance X on a shaft 4 and is so supported by a bearing 19 that the fan can be rotated independently of the shaft. The fan 14 is made from a non- magnetic substance such as aluminium or synthetic resin. The part of the fan 14 facing the stator 15 is integrated with an electroconductive ring 23. As a result, the driving section for the fan 14 is housed in the casing 2 and the rotary electric machine is made compact as a whole. The fan is reinforced by the ring 23.

7. 发明专利

JPS60234069A ELECTRICALLY DRIVEN POWER STEERING APPARATUS 失效
公开(公告)号：JPS60234069A
公开(公告)日：1985-11-20
申请号：JP9017684
申请日：1984-05-08
申请人： HITACHI LTD
发明人： KATOU JIROU , SAITOU SHIGEKI , SUGIMOTO SHIYUNICHIROU
IPC分类号： B62D5/04
摘要： PURPOSE:To improve versatile utility and permit the installation of the captioned apparatus onto a various sorts of cars by dividing a part of a steering shaft and integrally constituting a motor body for assisting steering force, reduction mechanism, clutch mechanism, etc. for the above-described divided parts. CONSTITUTION:A steering shaft is divided into three parts 2-4, and an electrically driven power steering apparatus A is installed in unit form onto the shaft part 3. Said power steering apparatus A is equipped with a motor M installed in parallel to the shaft part 3 and a reduction mechanism G connected through a unidirectional clutch mechanism C onto the shaft 5 of the motor M. The shaft part 3 is further divided into two parts 3A and 3B, and a torque detecting mechanism K is installed between the both. The turning force of the motor M is transmitted as a steering assisting force to the shaft part 3 through a belt 14 installed between the gear trains 9 and 10 constituting the reduction mechanism G and pulleys 12 and 13.

8. 发明专利

JPS5870092A INERTIAL FAN 失效
公开(公告)号：JPS5870092A
公开(公告)日：1983-04-26
申请号：JP16879281
申请日：1981-10-23
申请人： HITACHI LTD
发明人： SAITOU SHIGEKI
IPC分类号： F04D25/02 , F04D29/28
摘要： PURPOSE:To cause slowing-down revolution of a fan for a certain while after stopping of its turning shaft by the function of inertial force, by providing an inertial ring that is coupled with the turning shaft by means of helical splines and is designed to be capable of coming into contact with a tapered portion of the fan. CONSTITUTION:A male tapered portion 7 and a female tapered portion 9 are held in tight contact with each other. A fan 3 begins to revolve together with its shaft 1 by the thrust of an inertial ring 8 and the frictional force acted at the faces where the above two tapered portions 7 and 9 are held in contact with each other. With such an arrangement, if revolution of the turning shaft 1 is stopped abruptly after the speed of revolution has reached a certain level, the inertial ring 8 produces a thrust in the opposite direction to the fan 3 by the function of helical splines since the ring 8 tends to keep up its revolution, so that the female tapered portion 9 is disengaged from the male tapered portion 7. Therefore, slippage is caused between the shaft 1 and a plain bearing 4 by the inertial force of the fan 3, so that it can cause slowing-down revolution for a certain while after stopping of the shaft 1.

9. 发明专利

JPS57161024A HEAT TREATMENT OF LOW CARBON STEEL 失效
公开(公告)号：JPS57161024A
公开(公告)日：1982-10-04
申请号：JP4651181
申请日：1981-03-31
申请人： HITACHI LTD
发明人： OGAWA SATORU , SAITOU SHIGEKI
IPC分类号： C21D6/00 , C21D1/32
摘要： PURPOSE:To lower the hardness of the low carbon steel heated to above its austenitizing temp. through spheroidization of deposited carbide by cooling said steel from its A1 transformation temp. down to prescribed temp., thence heating the same to the temps. lower by a prescribed temp. range than the A1 transformation temp. and holding it at these temps. CONSTITUTION:Low carbon steel of

10. 发明专利

JPS5649622A SURGE ABSORBING FILTER 失效
公开(公告)号：JPS5649622A
公开(公告)日：1981-05-06
申请号：JP12383979
申请日：1979-09-28
申请人： HITACHI LTD
发明人： KAWAMATA SHIYOUICHI , SUGIURA YASUYUKI , MIYASHITA KUNIO , SAITOU SHIGEKI
IPC分类号： H02H9/04

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