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1. 发明专利

JPH05184102A GEAR MOTOR 失效
公开(公告)号：JPH05184102A
公开(公告)日：1993-07-23
申请号：JP34579491
申请日：1991-12-27
申请人： HITACHI LTD , HITACHI TAGA MOTOR KK
发明人： MORIYAMA KAZUYOSHI
IPC分类号： H02K7/116 , F16C33/10
摘要： PURPOSE:To obtain an inexpensive long-life gear motor by arranging the parts of a large diameter for the provision of lubricating oil reservoirs on the ends positioned on the side where the inner diameter parts of the gear shafts of plastic gears are fixed. CONSTITUTION:In the gear head 1 of a gear motor, gear shafts 3, 4, and 5 are fixed to a bracket 2. To the gear shafts, plastic gears 6, 7, and 8 are rotatively fitted to reduce the rotation of a motor pinion and transmit it to an output gear 10. The inner diameters of the plastic gears are arranged to be bearings, and on the bracket-side ends of the inner diameters 14 for the bearing use, large diameter parts 17 are provided for the lubricating oil reservoirs 11, 12, and 13. Inclined parts 15 are made for the bearing spaces to receive the lubricating oil by the application of capillary phenomenon. Also, the dimension of space for the lubricating oil reservoir is defined to be the one longitudinally and transversely such that the lubricating oil can be retained in the reservoir by the capillary phenomenon and no flowing out occurs. Then, when assembling, the plash gears are fitted after the lubricating oil is applied to the gear shafts.

2. 发明专利

JPH0266363A PLASTIC MOLDED GEAR 失效
公开(公告)号：JPH0266363A
公开(公告)日：1990-03-06
申请号：JP21498288
申请日：1988-08-31
申请人： HITACHI LTD , HITACHI TAGA MOTOR KK
发明人： MORIYAMA KAZUYOSHI
IPC分类号： F16H55/06 , B29D15/00
摘要： PURPOSE:To enable transmitting power and accuracy to be substantially improved of a molded gear by respectively independently providing large ribs connected to a boss and not reaching a rim and small ribs connected to a rim part not reaching the boss, in a molded disk part. CONSTITUTION:A large rib 6 is connected to a disk part 2 and a boss 1 and provided with an equal space, extending in the vicinity of a rim 3 and not being connected thereto, while a small rib 7 is connected to the disk part 2 and only the rim 3 and provided with an equal space similarly to the large rib 6. By providing the ribs 6, 7 of two large and small kinds in a length with no influence given to rim accuracy of a plastic molded gear, rim thickness can be suppressed to a value with no deterioration of accuracy, and the gear enables a grade of accuracy to be improved to a class 4 from a class 6 simultaneously gear transmission torque to be improved by about 25%.

3. 发明专利

JPS6066642A GEARED MOTOR 失效
公开(公告)号：JPS6066642A
公开(公告)日：1985-04-16
申请号：JP17306683
申请日：1983-09-21
申请人： HITACHI LTD , HITACHI TAGA MOTOR KK
发明人： MORIYAMA KAZUYOSHI
IPC分类号： H02K7/116
摘要： PURPOSE:To accurately reduce a noise by forming a gear case in a cylindrical shape and securing a gear case cover to a bracket along the axial direction. CONSTITUTION:A drive motor which has a stator 1 and a rotor 2 is clamped at the brackets 3, 4 of opposite output side and output side with screws 19, and a bearing 5 for a bear and a projection 7 are provided at the output side bracket 4. A gear case 8 is formed by die casting in a cylindrical shape, and passing grooves 9, 9' to be engaged with the projection 7 are formed along the axial direction. Gearings 12, 13 for the gear are formed at a gear case cover 10 which covers the hole of the case 8, a projection 11 to be engaged with the holes 9, 9' is formed, and a hole which communicates with the clamping member inserting hole 21 is formed. Thus, the cover 10, a gear case cover 16 are secured to the output side bracket 4 through the case 8 with mounting screws 17, and the projections 7, 11 are engaged with the holes 9, 9'.

4. 发明专利

JPH09247902A MOLDED MOTOR 失效
公开(公告)号：JPH09247902A
公开(公告)日：1997-09-19
申请号：JP5607896
申请日：1996-03-13
申请人： HITACHI LTD , HITACHI TAGA MOTOR KK
发明人： MORIYAMA KAZUYOSHI
IPC分类号： H02K5/08 , H02K11/00
摘要： PROBLEM TO BE SOLVED: To provide a molded motor having small irregularity due to the change of using conditions by increasing the heat receiving effect of a temperature protective unit for the motor without necessity of using an expensive material such as a stainless steel spring material to fix the protective unit, hence reducing in size the protective unit and allowing the protective unit to follow up the temperature rise of the motor. SOLUTION: The molded motor integrally resin-molds a stator and a winding part, and comprises a groove 3 having a depth in the axial direction of the motor and provided at the root part of a lead wire leading bushing 2 protruding from the contour of a molding frame 1, and a temperature protective unit 7 fixedly contained in the groove 3 with leads at both ends to protect it with insulating material.

5. 发明专利

JPH09238435A SMALL-SIZED INDUCTION MOTOR 失效
公开(公告)号：JPH09238435A
公开(公告)日：1997-09-09
申请号：JP4445896
申请日：1996-03-01
申请人： HITACHI LTD , HITACHI TAGA MOTOR KK
发明人： MORIYAMA KAZUYOSHI
IPC分类号： H02K1/16 , H02K17/08
摘要： PROBLEM TO BE SOLVED: To obtain a small-sized induction motor of wide application which has high torque characteristics, by setting respective teeth between phases shorter than those at any other part so that an air-gap dimension facing the rotor of a stator core may be increased more than any other part at a part corresponding to a section between the phases of windings. SOLUTION: A stator is formed by integrally-molding a stator 2 and a winding with premixed resin. The core of the stator 2 is provided with teeth 9 and slots 10 at the inner circumference of a yoke part 3. A main winding 12 and an auxiliary winding 13 are wound on the yoke part 3 via an insulating material 11. Teeth 14 positioned between phases put between the windings are set shorter than other teeth so that an air-gap dimension between the teeth 14 and a rotor may be increased. As a result, by decreasing the magnetic flux density of a part between phases which are high, and increasing the magnetic flux density of a magnetic pole central part which is too low, an ideal sinusoidal wave distribution can be almost formed. It is thus possible to improve torque characteristics markedly and attain a widely applied small type induction motor which is of thin type.

6. 发明专利

JPH08237985A MOTOR DRIVER 失效
公开(公告)号：JPH08237985A
公开(公告)日：1996-09-13
申请号：JP3647095
申请日：1995-02-24
申请人： HITACHI LTD , HITACHI TAGA MOTOR KK
发明人： YASUJIMA TOSHIYUKI , TAWARA KAZUO , MIYASHITA KUNIO , GOMITA HISAMITSU , KONNO TAKEO , MORIYAMA KAZUYOSHI
IPC分类号： H02P25/04 , H02P21/02 , H02P21/04 , H02P21/14 , H02P21/18 , H02P21/20 , H02P21/24 , H02P21/34 , H02P23/02 , H02P23/03 , H02P23/07 , H02P23/14 , H02P23/16 , H02P23/24 , H02P27/02 , H02P5/402
摘要： PURPOSE: To obtain an appropriate torque while minimizing the input power by simulating the speed-torque characteristics of a motor to detect the torque of the motor and then switching a plurality of capacitors depending on the torque. CONSTITUTION: A characteristics simulator 30 stores motor characteristics corresponding to the capacity of capacitor and determines the torque TO1-TO3 of each characteristics from the rotational speed N. A torque setter 34 estimates the load torque level TR from the load mode MOD. A comparator 31 compares the load torque level TR with the torque TO1-TO3 of each characteristics and selects the minimum operable characteristics. A characteristics switch 32 generates a signal providing a capacitance for realizing the selected characteristics and delivers gate signals G1, G2 through a drive circuit. A signal for determining the rotational direction based on a rotational direction command AL is then generated from a signal generator 33 and gate signals G3, G4 are delivered through the drive circuit 35.

7. 发明专利

JPH04166697A MAGENT PUMP 失效
公开(公告)号：JPH04166697A
公开(公告)日：1992-06-12
申请号：JP29204290
申请日：1990-10-31
申请人： HITACHI LTD , HITACHI TAGA MOTOR KK
发明人： MORIYAMA KAZUYOSHI
IPC分类号： F04D13/02 , H02K49/02
摘要： PURPOSE:To obtain a magnet pump high in reliability while self-restoring capacity is imparted by providing an iron core including a slot and a cage winding composed of a conductor and a short-circuiting ring, for the outer circumferential section of a driven magnet. CONSTITUTION:A drive motor 1 drives a drive magnet 3 via a magnet support 2. Meanwhile, a pump chamber 4 is made up out of a pump case 5 and a volute casing 6. In this case, an iron core 8 is provided for the outer circumferential section of a driven magnet 7 while being faced to a magnet pole, and the iron core 8 is provided with a slot 9. A conductor 10 is then set in the slot 9, and the both ends of the conductor 10 are mutually connected with s short-circuiting ring 11 so that a cage winding is thereby formed, and an impeller 16 is concurrently formed with the aforesaid parts integrally molded so as to be pivotally mounted by a shaft 15 via respective bearings 13 and 14. By this constitution, the motor can thereby be automatically self-restored because the iron core 8 including the cage winding acts as an induction motor even in the case of the loss of synchronism caused for any reason during operations.

8. 发明专利

JPS59204442A Small-sized gear motor 失效
标题翻译：小尺寸齿轮电机
公开(公告)号：JPS59204442A
公开(公告)日：1984-11-19
申请号：JP7819083
申请日：1983-05-06
申请人： Hitachi Ltd , Hitachi Taga Motor Kk
发明人： MORIYAMA KAZUYOSHI
IPC分类号： F16H57/02 , F16H57/023 , F16H57/028 , H02K5/04 , H02K7/116
CPC分类号： H02K7/116
摘要： PURPOSE:To eliminate a noise inexpensively by forming a circular spigot and a projection on the end face of an intermediate bracket of a geared motor, and forming a projection spigot and a recess on the end face of a gear case, and elastically engaging them. CONSTITUTION:A circular spigot 15 is formed near the outer periphery of the end face of an intermediate bracket 5 of a gear motor, and a projection 15 having a parallel unit at least radially in one corner is formed. A plurality of projection spigots 22 are formed on a gear case 14, and a recess 27 is formed. The spigot 15 and the spigot 22 are elastically engaged. The parallel unit of the projection 16 of the bracket 5 and the parallel unit of the recess 27 of the case 14 are engaged through a small gap.
摘要翻译：目的：通过在齿轮传动电动机的中间支架的端面上形成圆形的凸台和突起来消除噪音，并且在齿轮箱的端面上形成凸起插口和凹部，并弹性地接合它们。构成：在齿轮电动机的中间支架5的端面的外周附近形成有圆形的插销15，并且形成了在一个角部中至少径向地具有平行单元的突起15。在齿轮箱14上形成有多个突起插口22，形成有凹部27。插口15和插口22弹性接合。支架5的突起16的平行单元和壳体14的凹部27的平行单元通过小间隙接合。

9. 发明专利

JPH10295065A SINGLE-PHASE INDUCTION MOTOR 失效
公开(公告)号：JPH10295065A
公开(公告)日：1998-11-04
申请号：JP10003497
申请日：1997-04-17
申请人： HITACHI LTD , HITACHI TAGA MOTOR KK
发明人： YASUJIMA TOSHIYUKI , TAWARA KAZUO , MORIYAMA KAZUYOSHI , KONNO TAKEO , MIYASHITA KUNIO
IPC分类号： H02K1/16 , H02K17/08
摘要： PROBLEM TO BE SOLVED: To reduce the wire diameter of a winding the consumption amount of copper for the winding, and the cost by a method, wherein an inside main winding and an outside main winding are arranged concentrically around the magnetic pole of a main winding and an inside auxiliary winding and an outside auxiliary winding are arranged concentrically around the magnetic pole of an auxiliary winding. SOLUTION: In a main winding 10, an inside winding 10A which is wound at two-slot pitches and an outside winding 10B which is wound at four-slot pitches are wound around a curved teeth part. In an auxiliary winding 11, an inside winding 11A which is wound at two-slot pitches and an outside winding 11B which is wound at four-slot pitches are wound around the curved teeth part in such a way that the auxiliary winding 11 is deviated by an electrical angle of 90 deg. (a mechanical angle of 45 deg.) from the main winding 10. Thereby, the overlap of the coil end of the main winding 10 with the coil end of the auxiliary winding 11 is eliminated, and the length in the axial direction of a stator can be made short. At the same time, the circumferential length of the windings can be made short, and the resistance value of the windings can be reduced. The wire diameter of the windings can be made small according to the reduction portion of the resistance value of the windings, and the consumption amount of copper for the windings can be reduced.

10. 发明专利

JPH10295064A SINGLE-PHASE INDUCTION MOTOR 失效
公开(公告)号：JPH10295064A
公开(公告)日：1998-11-04
申请号：JP10003297
申请日：1997-04-17
申请人： HITACHI LTD , HITACHI TAGA MOTOR KK
发明人： YASUJIMA TOSHIYUKI , TAWARA KAZUO , MORIYAMA KAZUYOSHI , KONNO TAKEO , MIYASHITA KUNIO
IPC分类号： D06F37/30 , H02K1/16 , H02K17/08
摘要： PROBLEM TO BE SOLVED: To reduce the wire diameter of a winding and the consumption amount of copper for the winding by a method, wherein an inside main winding and an outside main winding are arranged concentrically around an upright teeth part on the side of a main winding and an inside auxiliary winding, and an outside auxiliary winding are arranged concentrically around an upright teeth part on the side of an auxiliary winding. SOLUTION: In a main winding 10, an inside winding 10A which is wound at three- slot pitches and an outside winding 10B which is wound at five-slot pitches are wound around a straight teeth part. In an auxiliary winding 11, an inside winding 11A which is wound at three-slot pitches and an outside winding 11B which is wound at five-slot pitches are wound around a straight teeth part, in such a way that the auxiliary winding is deviated by an electrical angle of 90 deg. (by a mechanical angle of 45 deg.) from the main winding 10. Thereby, the overlap of the coil end part of the main winding 10 with the coil end part of the auxiliary winding 11 is eliminated, and the length in the axial direction of a stator can be made short. At the same time, the circumferential length of the windings can be made short, and the resistance value of the windings can be made small. The wire diameter of the windings can be made small, according to the reduction portion of the resistance value of the windings.

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