公开(公告)号：US20140111884A1

公开(公告)日：2014-04-24

申请号：US14052022

申请日：2013-10-11

Applicant: MINEBEA CO., LTD.

Inventor： Hideaki SHOWA ,  Ryoichi KUROSAWA ,  Hironobu TSUGE

IPC: G11B19/20 ,  H02K1/12

CPC classification number: G11B19/2009 ,  H02K1/146 ,  H02K21/22 ,  H02K2201/09 ,  H02K2213/03

Abstract: A thin spindle motor having a stator core with sufficient swaging strength even using thin magnetic steel sheets is provided, whereby the magnetic loss and the power consumption of the spindle motor are reduced. The stator core is formed by laminating plural stator laminations with a thickness of 0.1 to 0.2 mm and joined by a swaging portion. The swaging portion has an approximately rectangular shape having long sides extending along a radial direction when viewed from an axial direction. The swaging portion has a cross section with a middle portion parallel to the radial direction and a slope portion at the both sides when viewed from a circumferential direction, thereby forming a recess. The recess has a depth that is less than the thickness of the stator lamination whereby the swaging portion does not cut the stator lamination.

Abstract translation: 提供了一种具有即使使用薄的电磁钢板也具有足够的模锻强度的定子芯的细主轴电动机，由此减小了主轴电动机的磁损耗和功率消耗。 定子铁芯通过层压多个0.1〜0.2mm的定子叠片而形成，并通过型锻部分连接。 模锻部具有从轴向观察时具有沿径向延伸的长边的大致矩形形状。 该锻模部具有从圆周方向观察时具有平行于半径方向的中间部分的中间部分和两侧的倾斜部分的横截面，从而形成凹部。 该凹部的深度小于定子层压体的厚度，由此，型锻部不切断定子层叠体。

公开(公告)号：US20160172924A1

公开(公告)日：2016-06-16

申请号：US14962474

申请日：2015-12-08

Applicant: MINEBEA CO., LTD.

Inventor： Hideaki SHOWA ,  Daigo NAKAJIMA ,  Naoyuki KONDO

IPC: H02K5/167

CPC classification number: H02K5/1677 ,  H02K5/1675

Abstract: A motor includes: a base including a holder portion; a shaft supporting member fitted inside the holder portion and fixed onto an inner circumferential surface of the holder portion; a shaft supported by the shaft supporting member; a rotor assembly rotatably supported with respect to the shaft supporting member via the shaft; and a stator assembly arranged on an outer circumferential portion of the holder portion. An adhesive groove on the base side and an adhesive groove on the shaft supporting member side, to which an adhesive is applied, are formed respectively on the inner circumferential surface of the holder portion and on an outer circumferential surface of the shaft supporting member facing the inner circumferential surface of the holder portion, and the adhesive grooves on the base side and on the shaft supporting member side are disposed to face each other at least in part.

Abstract translation: 马达包括：基座，包括保持器部分; 轴支撑构件，其安装在保持器部分内并固定到保持器部分的内圆周表面上; 由所述轴支撑构件支撑的轴; 转子组件，其经由所述轴相对于所述轴支撑构件可旋转地支撑; 以及布置在保持器部分的外圆周部分上的定子组件。 分别在保持部的内周面和与轴支承部件的轴支撑部件的外周面相对的基部侧的粘合剂槽和在轴支撑部件侧的粘合剂槽上形成有粘合剂的粘合剂 保持部的内周面，基部侧和轴支撑构件侧的粘合剂槽被设置成至少部分地彼此面对。