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1. 发明专利

JPS63144745A MOTOR 失效
公开(公告)号：JPS63144745A
公开(公告)日：1988-06-16
申请号：JP29046686
申请日：1986-12-08
申请人： SHIBAURA ENG WORKS LTD
发明人： NAKAZAWA ETSUO
IPC分类号： H02K15/02
摘要： PURPOSE:To improve the mechanical strength of a motor and to stabilize its quality, by applying thermosetting resin integrally to the mutual clearances and outside circumference of permanent magnets. CONSTITUTION:In a permanent magnet rotor 1 four permanent magnets 3a, 3b, 3c and 3d are arranged on to the outside circumference of a shaft 2 so that clearances 4 may be mutually formed. These clearances 4 and outside circumference are covered with thermosetting resin 5, which is formed diametally thin and so as to cover the axial edges. As the thermosetting resin 5 is cylindrically applied on to the outside circumference and integrally constituted between clearances 4, the mechanical strength gets improved, the outer surface of permanent magnets can be prevented from rust and smooth finish brought abut so that a motor is fit well for high-speed rotation.

2. 发明专利

JPH1189191A TWO-PHASE INDUCTION MOTOR 失效
公开(公告)号：JPH1189191A
公开(公告)日：1999-03-30
申请号：JP23833697
申请日：1997-09-03
申请人： SHIBAURA ENG WORKS LTD
发明人： NAKAZAWA ETSUO
IPC分类号： H02K17/08
摘要： PROBLEM TO BE SOLVED: To increase a motor starting torque by applying a power source voltage to a main coil, and applying a converted voltage deviated by an odd- numbered magnification of 1/4 period from a phase of the voltage applied to the coil to a sub-coil, thereby eliminating an impedance difference between circuits of the vicinity of the main coil and the vicinity of the sub-coil. SOLUTION: A voltage from an AC power source 12 is applied to a main coil 15. And, the voltage is rectified and smoothed by a diode 16 and a capacitor 19, and the converted voltage of a phase led by a 1/4 wavelength from a phase of the voltage applied to the coil 15 is applied to a sub-coil 18 via a transistor 17. When the voltage is a positive half cycle, the voltage is sequentially applied to the coils 15 and 18 in an order of arrows B1 and B2, while when the voltage is a negative half cycle, the voltage is sequentially applied in an order of arrows B3 and B4. Accordingly, a revolving field is generated by the coils 15, 18. Thus, a main coil current is always balanced with a sub-coil current, and hence a motor starting torque can be increased.

3. 发明专利

JPH0847191A ELECTRIC MOTOR 失效
公开(公告)号：JPH0847191A
公开(公告)日：1996-02-16
申请号：JP19748294
申请日：1994-07-28
申请人： SHIBAURA ENG WORKS LTD
发明人： NAKAZAWA ETSUO
IPC分类号： H02K1/27 , H02K15/03
摘要： PURPOSE:To provide an electric motor which can integrate a permanent magnet and a shaft with good accuracy, reduce a gap formed between a stator and a permanent-magnet rotor enhance and enhance operating efficiency. CONSTITUTION:In an electric motor, a permanent magnet 9 is constituted of a cylindrical plastic magnet, a rotor core 8 whose axial-direction size is smaller than that of the permanent magnet 9 is mounted internally at the permanent magnet 9, a shaft 7 is passed through the rotor core 8 and supported by a stator 3 so as to be rotatable, the fitting state of the rotor core 8 to the permanent magnet 9 is set to a dimensional relationship so as to balance a loosely fitted state to an extent that they are not force-fitted, and the permanent magnet 9 is fixed to the rotor core 9 so as to be provided with plastic deformation parts 11 which are formed in such a way that the outer circumferential side at the edge in the axial direction of the rotor core 8 is caulked by a punch.

4. 发明专利

JPH0847190A ELECTRIC MOTOR 失效
公开(公告)号：JPH0847190A
公开(公告)日：1996-02-16
申请号：JP19748194
申请日：1994-07-28
申请人： SHIBAURA ENG WORKS LTD
发明人： NAKAZAWA ETSUO
IPC分类号： H02K1/27 , H02K15/03
摘要： PURPOSE:To obtain an electric motor which can be manufactured easily without applying an adhesive to a permanent magnet and without using a complicated process such as a molding process or the like and which is provided with a permanent-magnet rotor with a favorable axis. CONSTITUTION:In an electric motor, a cylindrical permanent magnet 9 is constituted of a plastic magnet, a protrusion part 10 which is installed so as to protrude to the axial direction is formed on the inside-diameter side of the permanent magnet 9, a groove 11 to which the protrusion part 10 can be fitted is formed on the outer circumference of a core 8, the length in the axial direction of the permanent magnet 9 is made large with reference to the core 8, the permanent magnet 9 is fitted to the core 8, the end part in the axial direction of the protrusion part 10 is deformed at the side end of the core 8 by a plastic deformation operation, the core 8 is fixed to the permanent magnet 9 so as to constitute a permanent-magnet rotor 6, and the permanent-magnet rotor 6 is mounted internally.

5. 发明专利

JPH0441888A ROLLER TYPE TENT EXTENDING DEVICE 失效
公开(公告)号：JPH0441888A
公开(公告)日：1992-02-12
申请号：JP15024390
申请日：1990-06-08
申请人： SHIBAURA ENG WORKS LTD
发明人： NAKAZAWA ETSUO
IPC分类号： E06B9/56 , E06B9/68
摘要： PURPOSE:To prevent the looseness of a tent at the time of extension and winding by controlling torques in such a manner a first motor is rotated with a strong torque and a second motor with a weak torque at the time of winding the tent on a first winding roller. CONSTITUTION:In the state where a tent 1 is wound on a first winding roller 2 to open an opening part, a second motor 5 is rotated in the tent 1 winding direction, and a first motor 3 is rotated in the tent 1 winding direction. Then, the rotations of the motors 3, 5 are stopped in the state where the tent 1 is wound on a second winding roller to cover the opening part, and the tent 1 is extended. The first winding roller 2 is rotated in the winding direction, and the second winding roller 4 is also rotated in the winding direction. The first motor 3 and the second motor 5 are rotated with a strong torque and a weak torque, respectively, by a torque control means 6 to stretch the tent 1, and its loosening is prevented.

6. 发明专利

JPS63133851A MOTOR 失效
公开(公告)号：JPS63133851A
公开(公告)日：1988-06-06
申请号：JP27646386
申请日：1986-11-21
申请人： SHIBAURA ENG WORKS LTD
发明人： NAKAZAWA ETSUO
IPC分类号： H02K15/14 , H02K5/04 , H02K5/15
摘要： PURPOSE:To permit the fixing of flanges for a motor through welding, capable of securing sufficient strength even when the diameter of a core is small, by arranging three pieces of triangular flanges at three places on a bracket. CONSTITUTION:A motor is provided with a core 1, whose section is formed so as to be a circle, and a bracket, equipped with flanges 7a-7c formed so as to be projected from the outer periphery thereof. Two pieces of the flanges 7a, 7b are arranged in the angle of 90 deg. and one piece of the flange 7c is arranged at a position opposing to the two pieces of flanges 7a, 7b, arranged in above-described relation. These flanges 7a-7c are constituted so as to be projected with the shape of a triangle respectively while the franges are constituted so that a bolt 5 penetrates through the inside of the triangle. Bolts 5 are penetrated through the flanges 7a-7c of the bracket and weldings A are applied on the outer periphery of the core 1 so as to avoid the bolts 5.

7. 发明专利

JPH10322950A ROTOR FOR INDUCTION MOTOR, AND MANUFACTURE OF ROTOR 失效
公开(公告)号：JPH10322950A
公开(公告)日：1998-12-04
申请号：JP14576797
申请日：1997-05-19
申请人： SHIBAURA ENG WORKS LTD
发明人： NAKAZAWA ETSUO
IPC分类号： H02K1/28 , H02K15/02 , H02K17/16
摘要： PROBLEM TO BE SOLVED: To provide a rotor for induction motor and its manufacture where the reduction of the processing cost by the abolishment of the machining of the periphery of a core and the abolishment of grooving, the improvement of assembly property, and the increase of the strength of the shaft are materialized. SOLUTION: This rotor for induction motor which can abolish a machining processing of the periphery of the rotor and the grooving of the shaft and curtail stop rings and collars and moreover can shorten the man-hours in the assembly of a motor, by charging a part of the periphery of the shaft with a charging metal 4 and making a step part at the same time, when molding a slot 7 and an end ring 9 of a rotor core 1 by die cast, or by charging the space between the rotor core 1 and the shaft further at the same time as the time of the charge, thereby making it into a rotor.

8. 发明专利

JPH0832147B2 失效
公开(公告)号：JPH0832147B2
公开(公告)日：1996-03-27
申请号：JP27646186
申请日：1986-11-21
申请人： SHIBAURA ENG WORKS LTD
发明人： NAKAZAWA ETSUO
IPC分类号： H02K15/02 , H02K1/27

9. 发明专利

JPS63202244A MANUFACTURE OF ELECTRIC MOTOR 失效
公开(公告)号：JPS63202244A
公开(公告)日：1988-08-22
申请号：JP3135887
申请日：1987-02-16
申请人： SHIBAURA ENG WORKS LTD
发明人： NAKAZAWA ETSUO
IPC分类号： H02K15/04
摘要： PURPOSE:To facilitate the molding of the title apparatus and enable said apparatus to correspond easily to the change of the quantity of lead wires by passing lead wires through bushing through holes, filling said through parts with a hardening material, and molding them out of resin. CONSTITUTION:A bushing 7 is formed into a bottomed cylindrical body and a plurality of through holes 8 are formed in its bottom. Lead wires 9 are arbitrarily passed through said through holes 8 of the bushing 7 and their inner parts are filled with hardening material 10. After said hardening material 10 has been hardened, it is held by a molding tool and molded by the filling of said molding tool with resin.

10. 发明专利

JPS63194552A MOTOR 失效
公开(公告)号：JPS63194552A
公开(公告)日：1988-08-11
申请号：JP2463387
申请日：1987-02-06
申请人： SHIBAURA ENG WORKS LTD
发明人： NAKAZAWA ETSUO
IPC分类号： H02K15/02 , H02K1/27
摘要： PURPOSE:To improve the efficiency of a motor and to facilitate the manufacture of the motor by providing a plurality of poles for holding a ring magnet, and displacing the outer peripheries of the poles in a rotating direction to form a skew. CONSTITUTION:A shaft 5 has a plurality of ring magnets 6a-6f to be associated with poles 7a-7l so as to holds the magnets 6a-6f. The magnets 6a-6f are axially magnetized to be formed in a ring shape, and engaged with a shaft 5. The poles 7a-7l for holding it are bent at the outer peripheral edges axially to form a cylindrical surface 8. When the poles 7a-7l are engaged with the shaft 5, if they are individually displaced circumferentially at necessary positions, a skew is formed. Thus, since the efficiency of a motor is improved and the manufacture is facilitated, a motor having good performance is obtained inexpensively.

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