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61. 发明专利

JPH11178301A MOTOR 失效
公开(公告)号：JPH11178301A
公开(公告)日：1999-07-02
申请号：JP34552197
申请日：1997-12-15
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： NATSUHARA TSUTOMU , YAMADA TOMIO
IPC分类号： H02K1/24 , H02K23/40
摘要： PROBLEM TO BE SOLVED: To reduce cogging torque, suppress noise and vibration, and reduce loss torque by specifying the number of poles of a rotor iron core with a coil wound around, and the number of poles of a magnet formed so as to face the rotor iron core respectively, and subjecting the rotor iron core to skew. SOLUTION: A magnet 5 which is formed so as to face opposite a rotor iron core 2 with a coil wound around is fixed in a case 10 with 4 poles of N-pole and S-pole polarized alternately in a circumferential direction. The rotor core 2 with three magnetic poles is disposed at a position facing opposite the magnet 5 with a gap put between them so as to be freely rotatable, and a skew forming part 4 which inclines at a fixed angle θ is applied in the axial direction of the rotor iron core 2. When the number of the poles of the rotor iron core 2 is 3n, and the number of the poles of the magnet is 4n (where (n) is an integer of one or more), by subjecting the rotor iron core 2 to skew, it is possible to reduce cogging torque with attraction and repulsion accompanying between the poles of the rotor iron core 2 and the poles of the magnet 5. Consequently, noise and vibration are restrained, making obtaining smooth motor rotation possible.

62. 发明专利

JPH11164525A MOTOR 失效
公开(公告)号：JPH11164525A
公开(公告)日：1999-06-18
申请号：JP32363297
申请日：1997-11-25
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： NATSUHARA TSUTOMU , YAMADA TOMIO , MURAKITA WATARU
IPC分类号： H02K13/14
摘要： PROBLEM TO BE SOLVED: To protect a commutator and a brush, and prevent noise. SOLUTION: Arc-shaped holding members 3, 3 are protruded toward the terminal 2b, 2c side adjacent to the respective terminals 2a, 2b, 2c of a commutator 1. The holding members 3, 3 of the adjacent terminals 2a, 2b hold noise preventing members 4 electrically and mechanically. Thereby arcs between the terminals is restrained from being generated.

63. 发明专利

JPH1198805A LINEAR MOTOR 失效
公开(公告)号：JPH1198805A
公开(公告)日：1999-04-09
申请号：JP25962897
申请日：1997-09-25
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： MATSUKAWA KOJI , HORI HIRONOBU , KAJIYAMA TOMOHITO , MIZUNO MITSUMASA , SAITO JUN , YAMAGUCHI SHIRO , YAMADA TOMIO , SHIKATA NORIYUKI
IPC分类号： H02K41/02 , H02K41/035
摘要： PROBLEM TO BE SOLVED: To provide a linear motor whose assembly is facilitated and whose productivity is improved. SOLUTION: A needle 20 linearly moves in a housing with magnetic force operating between a permanent magnet 12 fixed to the rectangular housing and an electromagnet 22 provided for the needle 20. The sliders 29a and 29b of insulating materials are engaged with the cores 23 (facing pieces 23a and 23b and a connection piece 23c) of the electromagnet 22. A brush 27 constituted of a plate and conductive plates are fixed to the sliders 29a and 29b. A coil 25 of the electromagnet 22 is connected to the brush 27 and the conductive plates. A varister as a surge absorption element is connected to the brush 27 and the conductive plates.

64. 发明专利

JPH10290552A MOTOR 失效
公开(公告)号：JPH10290552A
公开(公告)日：1998-10-27
申请号：JP9735297
申请日：1997-04-15
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： NATSUHARA TSUTOMU , YAMADA TOMIO
IPC分类号： H02K9/06 , H02K23/00
摘要： PROBLEM TO BE SOLVED: To provide a motor in which temperature rise can be suppressed by ensuring a plenty of air flow for cooling the motor in the limited inner space thereof. SOLUTION: A coil 3 is wound around each pole 2 of a core 1 to form a rotor 4 which is provided with a fan 9 for cooling the inside such that the blades 10 of the fan 9 does not touch the rotor 4. The blade 10 of the fan 9 is formed to partially extend through a gap between the coils 3 wound around the poles 2 between the poles 2 of the core 1. Since the blade 10 of the tan 9 partially extends through the gap between the coils 3a to form an extended part 26, the area of the blade 10 can be increased at that part and a plenty of air flow for cooling the motor is ensured, thus suppressing temperature rise of the motor.

65. 发明专利

JPH05122885A FAN-MOTOR 失效
公开(公告)号：JPH05122885A
公开(公告)日：1993-05-18
申请号：JP27774391
申请日：1991-10-24
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： YAMADA TOMIO
IPC分类号： H02K5/20 , H02K7/14 , H02K23/04
摘要： PURPOSE:To provide a fan-motor capable of more controlling the temperature rising of a coil of a motor. CONSTITUTION:In a fan-motor equipped with a rotor 1 having a coil 3 and a cylindrical metal motor case 2 mounting a stator magnet 7 to the internal wall surface thereof and decorating interiorly the rotor 1 simultaneously, a plurality of rectifier vanes 15 passing through ventilating spaces 14 along axis are projected radially to the peripheral surface of the motor case 2.

66. 发明专利

JPH04372543A MOTOR ROTOR 失效
公开(公告)号：JPH04372543A
公开(公告)日：1992-12-25
申请号：JP5225691
申请日：1991-03-18
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： YAMADA TOMIO , SASAKI SHIGEKI
IPC分类号： H02K1/24
摘要： PURPOSE:To contrive to improve a motor performance by improving workability at the time of winding a wire around a magnetic pole and by controlling the variation of torque to the minimum. CONSTITUTION:An apparatus has a rotor core 1 formed by a pole body 2 composed of a plurality of radially provided magnetic poles 2b and by a pole teeth body 3 comprising pole teeth 4 in the same number as that of the magnetic poles 2b formed into an integral body by non-magnetic material 5, a coil 6 wound around the magnetic poles 2b and a rotating shaft 7 secured in the center of the pole body 2. After the magnetic poles 2b are provided with the coil 6, the magnetic teeth body 3 is secured in the pole body 2. When a wire is wound around the magnetic poles 2b, operations are easily conducted because there is no pole teeth body 3. Further, because the opening between pole teeth required heretofore at the time of winding the wire around the magnetic pole is made useless, it is possible to minimize a circumferential gap between pole teeth 4.

67. 发明专利

JPH02223346A MOTOR 失效
公开(公告)号：JPH02223346A
公开(公告)日：1990-09-05
申请号：JP4423689
申请日：1989-02-23
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： TAKASHIMA KIYOSHI , YAMADA TOMIO , MURAKITA WATARU , NATSUHARA TSUTOMU , SASAKI SHIGEKI
IPC分类号： H02K5/167 , H02K7/09
摘要： PURPOSE:To reduce bearing noise by providing a bias means to bias a rotor in the radial direction. CONSTITUTION:The axial lengths l1 and l2 of a pair of magnets 2a1 and 2b1 are mutually made different of which one facing each other is to be an W pole and the other an N pole provided to the inside surface of a case 1a. It is this constitution to differ the length between the lengths l1 and l2 that becomes a bias means. According to this constitution, since the flux of the shortened magnet 2a1 is less, the attractive force to attract a rotor 5 becomes weak. On that account, the rotor 5 is attracted to the long magnet 2b1 and the rotating shaft 4 of the rotor 5 rotates, always being pushed against the inner magnet 2b1 side of a bearing 10. The vibration in rotating the rotor 5 by the clearance between the rotating shaft 4 and the bearing 10 is thereby eliminated and the knocking noise caused by the rotating shaft 4 contacting the bearing 10 can be dissolved.

68. 发明专利

JPH023389B2 失效
公开(公告)号：JPH023389B2
公开(公告)日：1990-01-23
申请号：JP24962783
申请日：1983-12-23
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： YAMADA TOMIO
IPC分类号： H02K7/08 , H02K5/167 , H02K7/14

69. 发明专利

JPH01298924A SMALL-SIZED DC MOTOR 失效
公开(公告)号：JPH01298924A
公开(公告)日：1989-12-01
申请号：JP13075188
申请日：1988-05-26
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： MURAKITA WATARU , YAMADA TOMIO , SASAKI SHIGEKI , TAKASHIMA KIYOSHI
IPC分类号： H02K1/12 , H02K1/22
摘要： PURPOSE:To prevent a rotor from vibrating in its axial direction by providing means for differentiating axial magnetic attraction force generated between a magnet and a core at both sides with respect to the center of its axial width. CONSTITUTION:The centers of the axial widths of a magnet 11 and a core 21 are substantially brought into coincidence. The shape of the magnet 11 is formed in a plate state bent in a cylindrical surface state in such a manner that the circumferential width is wider toward a commutator 3. According to this configuration, the magnetic resistance of a passage in which the magnetic flux of the magnet 11 passes through the core 22 becomes smaller toward the commutator 3. Thus, the magnetic flux density of the left side section from the center of the axial width becomes higher, an attraction force toward the commutator 3 is generated at the core 21, and the end face of the rotary shaft 20 of a rotor 2 is pressed to a thrust receiving plate 7. Accordingly, the rotor 2 is not axially vibrated at the time of rotation to prevent a noise from generating.

70. 发明专利

JPS57112864A MASSAGE MACHINE 失效
公开(公告)号：JPS57112864A
公开(公告)日：1982-07-14
申请号：JP18853980
申请日：1980-12-29
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： YAMAMURA YUKIO , OOTSUKA SHINPEI , KUROSAKI AKIO , YAMADA TOMIO , NAKAE YOSHIHIRO , YAMAMOTO SHIGEO
IPC分类号： A61N1/00 , A61H7/00 , A61H23/00 , A61H23/02 , A61H39/04

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