公开(公告)号：US20030127940A1

公开(公告)日：2003-07-10

申请号：US10359339

申请日：2003-02-06

Applicant: Mabuchi Motor Co., Ltd.

Inventor： Kenji Furuya ,  Makoto Kimura

IPC: H02K001/00

CPC classification number: H01R39/54 ,  H02K13/04 ,  H02K13/105 ,  Y10T29/49009 ,  Y10T29/49011 ,  Y10T29/49012 ,  Y10T29/49071 ,  Y10T29/49073

Abstract: Each of the rotor magnetic poles is composed of a winding around a laminated core and each of both ends of each wound wire is connected to a commutator leg part coupled with a tip of a corresponding commutator segment of the commutator unit. Each of the commutator leg parts comprises a base portion extending outward in a direction substantially normal to the radial direction from the tip of the corresponding commutator segment tip and coupled to the commutator segment tip and a tip portion narrowed stepwise to let the ends of a wound wire be connected. A disk-shaped varistor having a hole at the center is mounted over the base portion of the commutator leg part, and each electrode of the varistor is soldered onto the corresponding base portion. Further, the commutator leg parts are punched and cut out of a reel-wound flat parent metal sheet and fixed to the commutator segment tips.

公开(公告)号：US20030122444A1

公开(公告)日：2003-07-03

申请号：US10359418

申请日：2003-02-06

Applicant: Mabuchi Motor Co., Ltd.

Inventor： Kenji Furuya ,  Satoshi Ashikawa

IPC: H02K001/00

CPC classification number: H02K13/105 ,  H01R39/32 ,  H02K13/04 ,  Y10T29/49011

Abstract: The leading end of a wire to be wound fed from a coil winder is wound around one of commutator leg parts a prescribed number of turns and then wound around a corresponding salient pole. After that, it is similarly wound successively around other commutator leg parts and around other salient poles and, after it is wound around the same commutator leg part as the one around which the leading end of the wire was first wound, the wound wire is cut. Only the portions that will be wound around the commutator leg parts in synchronization with the feed of the wire to be wound from the coil winder are stripped of their insulating coat prior to being wound, and the wound portions of the commutator leg parts are welded.

公开(公告)号：US20010038253A1

公开(公告)日：2001-11-08

申请号：US09892029

申请日：2001-06-26

Applicant: MABUCHI MOTOR CO., LTD.

Inventor： Kenji Furuya ,  Toshiya Yui ,  Kazuaki Takayama ,  Hiroshi Otsubo

IPC: H02K001/24

CPC classification number: H02K15/0018 ,  H02K1/24 ,  H02K15/024 ,  H02K15/06 ,  H02K29/03 ,  H02K2201/03 ,  Y10T29/49012

Abstract: A miniature motor includes: a plurality of magnets serving as stator poles and attached to an inner surface of a motor casing having a closed-bottomed cylindrical shape; a salient-pole rotor having a core mounted on a rotor shaft and windings placed on the core; and a commutator mounted on the rotor shaft. The core includes a center portion having a hole formed therein at the center for engagement with the rotor shaft, a plurality of leg portions extending integrally and radially from the center portion in equal number with the salient poles, and a plurality of wing portions, each extending integrally and symmetrically from an end of each of the leg portions. The core comprises core laminations blanked from sheet steel and assembled together and is formed through deformation of the entire wing portions such that the radius of a circumcircle of the core coincides with a designed final radius of curvature of outer circumferential surfaces of the salient poles of the rotor.

Abstract translation: 微型电动机包括：多个用作定子极的磁体，并且附接到具有闭合圆筒形状的电动机壳体的内表面; 具有安装在转子轴上的芯和放置在芯上的绕组的凸极转子; 以及安装在转子轴上的换向器。 该芯部包括：中心部，其中央形成有与转子轴接合的中心部;多个支腿部，与中心部分一体地延伸，与凸极相等数量;以及多个翼部， 从每个腿部的端部整体地和对称地延伸。 芯部包括从薄钢板冲切并组装在一起的芯片，并且通过整个翼部的变形而形成，使得芯的外接圆的半径与设计的圆极的外圆周表面的设计的最终曲率半径重合 转子。

公开(公告)号：US20040221445A1

公开(公告)日：2004-11-11

申请号：US10866459

申请日：2004-06-11

Applicant: Mabuchi Motor Co., Ltd.

Inventor： Kenji Furuya ,  Makoto Kimura

IPC: H02K001/00 ,  H01R043/06

CPC classification number: H02K13/04 ,  H01R13/03 ,  H01R39/32 ,  H01R43/0221 ,  Y10T29/49011

Abstract: A rotor for a small-sized motor has a plurality of rotor magnetic poles and a commutator on a rotor shaft, and both ends of a wire of each winding of the rotor magnetic poles are tied up with and connected by spot welding to a U-shaped hook-type commutator leg connected to the corresponding commutator piece end of the commutator, respectively. The commutator leg has a copper-based base material, and is composed by attaching a thin layer of a clad material with a melting point lower than that of the above described base material and a high electric resistance thereon at the surface part to be inside when bent to the U-shaped hook type. Thus, in the connection between the commutator leg and the copper wire material of the small-sized motor, the reduction of defectives of breaking of the wire because of heat shock at the time of welding is achieved, and in the meantime, the stabilization of welding is achieved, so that the reliability of the connection can be increased.

Abstract translation: 用于小型电动机的转子在转子轴上具有多个转子磁极和换向器，转子磁极的每个绕组的线的两端通过点焊被连接并连接到U形电机， 分别连接到换向器的相应换向器端部的形状的钩形整流器脚。 换向器支腿具有铜基材料，并且通过将熔点比上述基材低的覆层材料的薄层附着在表面部分的高电阻而构成为内部， 弯曲成U形钩型。 因此，在小型电动机的换向器支脚和铜线材之间的连接中，实现了焊接时由于热冲击导致的线断裂缺陷的减少，同时，稳定化 实现了焊接，从而可以提高连接的可靠性。