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22 条记录 (耗时 0.011 秒)

    Armature for direct current motor
    1.
    发明公开
    Armature for direct current motor 失效
    直流电动机

    公开(公告)号：EP0168055A3

    公开(公告)日：1987-04-01

    申请号：EP85108707

    申请日：1985-07-12

    申请人： HITACHI, LTD.

    发明人： Tani, Tatsuhiro ,  Nagasawa, Hiroyuki ,  Tomite, Tosio ,  Tsubota, Kiyomasa ,  Takahashi, Akira

    IPC分类号： H02K15/16

    CPC分类号： F16F15/32 ,  H02K7/04 ,  Y10T74/2111

    摘要： Two or more imbalance correcting openings (7) with the same cross-sectional configuration are provided in an armature core (1) in parallel to a shaft (2) in such a manner as to be equally spaced on a circumference which is concentrical with the shaft, and members serving as weights (8) are inserted in the adjacent openings to thereby correct any imbalance, the number of adjacent openings being selected to be (n-1/2)+1 or less when the total number n of openings is odd and to be n/2 or less when the total number n is even.

    Method of production of cylindrical body
    4.
    发明公开
    Method of production of cylindrical body 失效
    生产圆柱体的方法

    公开(公告)号：EP0129246A3

    公开(公告)日：1985-06-19

    申请号：EP84107014

    申请日：1984-06-19

    申请人： HITACHI, LTD.

    发明人： Tani, Tatsuhiro ,  Nagasawa, Hiroyuki ,  Kikuchi, Rokuro ,  Tomite, Tosio ,  Kobayashi, Hidemitsu

    IPC分类号： B21D05/14 ,  B21D53/10

    CPC分类号： B21D53/16

    摘要： A method of production of a cylindrical body (10b') from a sheet (10) of steel formed at opposite sides with projections (10A) and cutouts (10a) complemetary to each other. The method comprises the steps of rolling the sheet (10) of steel and inserting the projections (10A) in the cutouts (10a) to provide a cylindrical blank (10b), and compressing at least one of inner and outer peripheral surfaces of the cylindrical blank (10b) in a radial direction to reduce the thickness of the cylindrical blank (10b) and to stretch a portion of the cylindrical blank (10b) in an axial direction whereby the projections (10A) inserted in the cutouts (10a) can be brought into intimate contact with each other at jointed portions (10c).

    Method of production of cylindrical body
    5.
    发明公开
    Method of production of cylindrical body 失效
    一种用于制造圆筒体的方法。

    公开(公告)号：EP0129246A2

    公开(公告)日：1984-12-27

    申请号：EP84107014.7

    申请日：1984-06-19

    申请人： HITACHI, LTD.

    发明人： Tani, Tatsuhiro ,  Nagasawa, Hiroyuki ,  Kikuchi, Rokuro ,  Tomite, Tosio ,  Kobayashi, Hidemitsu

    IPC分类号： B21D5/14 ,  B21D53/10

    CPC分类号： B21D53/16

    摘要： A method of production of a cylindrical body (10b') from a sheet (10) of steel formed at opposite sides with projections (10A) and cutouts (10a) complemetary to each other. The method comprises the steps of rolling the sheet (10) of steel and inserting the projections (10A) in the cutouts (10a) to provide a cylindrical blank (10b), and compressing at least one of inner and outer peripheral surfaces of the cylindrical blank (10b) in a radial direction to reduce the thickness of the cylindrical blank (10b) and to stretch a portion of the cylindrical blank (10b) in an axial direction whereby the projections (10A) inserted in the cutouts (10a) can be brought into intimate contact with each other at jointed portions (10c).

    Permanent magnet type motor
    6.
    发明公开
    Permanent magnet type motor 失效
    永磁式电机。

    公开(公告)号：EP0096868A1

    公开(公告)日：1983-12-28

    申请号：EP83105715.3

    申请日：1983-06-10

    申请人： HITACHI, LTD.

    发明人： Tomite, Tosio

    IPC分类号： H02K23/04 ,  H02K1/14 ,  H02K15/02

    CPC分类号： H02K15/03 ,  H02K23/04 ,  Y10T74/131

    摘要： A permanent magnet type motor having a stator (1) which comprises a yoke (4), a plurality of main magnetic poles (2) made of permanent magnets, and a plurality of auxiliary magnetic poles (3), each of the main magnetic poles (2) and each of the auxiliary magnetic poles (3) being juxtaposed on the inner peripheral surface of the yoke (4), wherein each of the auxiliary magnetic poles (3) has an axial length (Lp) larger than the thickness (La) of an armature core and smaller than the axial length (Lm) of each of the main magnetic poles (2), wherein each of the main magnetic poles (2) has an inner diameter (Dp) smaller than the inner diameter (Ds) of each of the auxiliary magnetic poles (3), wherein each of the main poles (2), before being secured on the yoke (4), is machined to have the inner diameter (Dp) smaller than the predetermined inner diameter by a thickness (8) to be machined, and wherein each of the main magnetic poles is machined to have the predetermined inner diameter after it has been secured together with each of the auxiliary magnetic poles (3) onto the yoke (4).

    Direct current dynamoelectric machine of permanent magnet type
    7.
    发明公开
    Direct current dynamoelectric machine of permanent magnet type 失效
    永磁式电动直流电机。

    公开(公告)号：EP0078012A1

    公开(公告)日：1983-05-04

    申请号：EP82109691.4

    申请日：1982-10-20

    申请人： Hitachi, Ltd.

    发明人： Tomite, Tosio

    IPC分类号： H02K23/04 ,  H02K1/14

    CPC分类号： H02K1/17 ,  H02K23/04

    摘要： A d.c. dynamoelectric machine of permanent magnet type comprises an armature (A) and a plurality of field poles, wherein each of the poles comprises a main pole part (a permanent magnet) (2) composed by an integral combination of a first magnet (21) formed of a magnetic material having a large coercive force and a second magnet (22) formed of a magnetic material providing a high residual flux density and having an axial length (L M ) larger than that (L A ) of the armature core, and an auxiliary pole part (3) juxtaposed and coupled to the permanent magnet (2) and having a permeability higher than the reversible permeability of the permanent magnet, and an air gap (4) for intercepting the path of leakage flux is defined between the permanent magnet and the auxiliary pole part.