公开(公告)号：US20120319543A1

公开(公告)日：2012-12-20

申请号：US13457862

申请日：2012-04-27

申请人： Masaki ADACHI ,  Yoshiaki OGUMA ,  Yasuyuki KAJI

发明人： Masaki ADACHI ,  Yoshiaki OGUMA ,  Yasuyuki KAJI

IPC分类号： H02K11/00

CPC分类号： H02K5/10 ,  H02K5/128 ,  H02K7/14 ,  H02K11/30

摘要： A motor includes a cover made of a resin material. The cover includes a first annular portion arranged to extend in an annular shape above coils, a side wall portion arranged to extend downward from an outer circumferential portion of the first annular portion, and a second annular portion arranged to extend radially outward or radially inward from a lower end portion of the side wall portion along an upper surface of a circuit board. The side wall portion is arranged to extend in an axial direction while filling in gaps between teeth on a radially inner side of radially outer end surfaces of the teeth. The coils are covered by the cover to be protected from dust, water droplets, etc. The radially outer end surfaces of the teeth are exposed from the cover, and are thus arranged to be in radial proximity to a rotor magnet.

摘要翻译： 电动机包括由树脂材料制成的盖。 所述盖包括布置成在线圈上方以环形形状延伸的第一环形部分，设置成从所述第一环形部分的外圆周部分向下延伸的侧壁部分和布置成径向向外或径向向内延伸的第二环形部分 沿着电路板的上表面的侧壁部分的下端部分。 侧壁部分被布置成在轴向方向上延伸，同时填充齿的径向外端表面的径向内侧上的齿之间的间隙。 线圈由盖子覆盖以防止灰尘，水滴等。齿的径向外端表面从盖子露出，并且因此布置成径向接近转子磁体。

公开(公告)号：US20080232983A1

公开(公告)日：2008-09-25

申请号：US12052757

申请日：2008-03-21

申请人： Shoki YAMAZAKI ,  Hideki NAGAMATSU ,  Masaki ADACHI

发明人： Shoki YAMAZAKI ,  Hideki NAGAMATSU ,  Masaki ADACHI

IPC分类号： F04B35/04 ,  H02K21/22 ,  B23P15/00

CPC分类号： F04D25/0613 ,  F04D29/329 ,  H02K1/2786 ,  H02K1/30 ,  H02K7/14 ,  Y10T29/49327

摘要： A motor according to the present invention includes a boss portion 34 preferably includes an inner ring portion 342 having at an axially lower end surface thereof a substantially ring shaped convex portion 3421. The boss portion 34 preferably includes at a central portion thereof a through hole at which a shaft 32 is press fitted. A rotor holder 31 having a substantially cylindrical shape includes a through hole 321 centered about a rotary axis. The through hole 321 and the inner ring portion 342 of the boss portion 34 are fitted to one another. The convex portion 3421 includes a portion plastically deformed outwardly in the radial direction so as to sandwich an inner circumferential surface 3211 of the rotor holder 31. The inner circumferential surface of the impeller cup portion 22 includes a plurality of convex portions 221 near an upper portion thereof. The rotor holder 31 is press into the inner circumferential surface of the impeller cup portion via the convex portions 221.

摘要翻译： 根据本发明的电动机包括：凸起部分34，优选地包括内环部分342，该内环部分342在其轴向下端表面处具有大致环形的凸形部分3421.凸起部分34优选地在其中心部分处包括通孔 轴32被压配合。 具有大致圆筒形状的转子保持器31包括以旋转轴为中心的通孔321。 凸台部34的通孔321和内圈部342彼此嵌合。 凸部3421包括沿径向向外塑性变形的部分，以夹持转子保持器31的内周面3211。叶轮杯部22的内周面包括在上部附近的多个凸部221 其中。 转子保持件31经由凸部221压入叶轮杯部的内周面。