公开(公告)号：EP0745185A1

公开(公告)日：1996-12-04

申请号：EP95903917.0

申请日：1994-12-19

申请人： NIPPON DENSO CO., LTD.

发明人： SHIGA, Tsutomu ,  HAYASHI, Nobuyuki ,  OHMI, Masanori ,  KAJINO, Sadayoshi

IPC分类号： F02N15 ,  F02N11 ,  H02K9 ,  H02K13 ,  H02K23 ,  H02K1 ,  H02K3

CPC分类号： F02N15/046 ,  H02K1/17 ,  H02K3/34 ,  H02K3/38 ,  H02K3/493 ,  H02K3/51 ,  H02K9/28 ,  H02K13/08 ,  H02K23/26

摘要： Lower-layer coil ends (537) and upper-layer coil ends (534) forming the first and second connecting portions are held in abutment with the end face of an armature core (500) through insulators and, hence, the inertias of cylindrical commutators and armature coils in the prior art are reduced to reduce the inertia drastically as that of the armature (540). As a result, while a pinion gear (210) is meshing with a ring gear (100), the impact torque at the time of inertial rotation can be reduced to reduce the module of the used gear to M = 0.9. At the same time, the reaction force R1 of the armature bearing (570) can be reduced by the weight of the cylindrical commutator of the prior art, and its support distribution can be reduced to l'/L', as compared with the value l/L of the prior art, to reduce the diameter of the bearing. As a result, a sun gear (310) can have its tooth number reduced to Zs = 8 (i.e., the deddendum diameter of Ζ = 5.85), and the speed reduction ratio can be set to I = 8.25. Hence, the motor volume can be reduced as compared with I = 6 or less in the prior art, so that the motor can be small-sized.

摘要翻译： 形成第一和第二连接部分的下层线圈端部537和上层线圈端部534通过绝缘体与电枢铁芯500的端面保持接触，并因此保持圆柱形换向器的惯性 并且现有技术中的电枢线圈被减小以像电枢（540）那样急剧降低惯性。 结果，在小齿轮（210）与齿圈（100）啮合的同时，可以减小惯性旋转时的冲击扭矩，以将所使用的齿轮的模块减小到M = 0.9。 同时，电枢轴承（570）的反作用力R1可以由于现有技术的圆柱形换向器的重量而减小，并且其支承分布可以减小到1'/ L' l / L的现有技术，以减小轴承的直径。 结果，太阳齿轮310的齿数可以减小到Zs = 8（即齿根直径Z = 5.85），减速比可以设定为I = 8.25。 因此，与现有技术中的I = 6或更小相比，电动机的体积可以减小，使得电动机可以是小尺寸的。