公开(公告)号：US10193426B2

公开(公告)日：2019-01-29

申请号：US15327347

申请日：2015-07-27

Applicant: NHK SPRING CO., LTD.

Inventor： Shuji Ando ,  Michinobu Hirama

IPC: H02K15/02 ,  B23K26/21 ,  B23K26/26 ,  B23K101/36 ,  B23K103/02

Abstract: In a method for manufacturing a stacked iron core, a stacked iron core body is manufactured by stacking so as to be phase-offset with respect to each other in the circumferential direction plural ring-shaped iron core pieces respectively configured by plural circular arc-shaped iron core pieces arranged into ring shapes. Next, each layer of the circular arc-shaped iron core pieces, which are phase-offset with respect to each other in the circumferential direction, is welded together along a stacking direction at plural locations (plural weld portions) arranged around the circumferential direction of an inner circumferential portion or an outer circumferential portion of the stacked iron core body. A pair of key protrusions is formed on inner circumferential portions of the stacked iron core at positions opposing each other, and so key components are rendered unnecessary when assembling a rotor of a vehicle drive motor.

公开(公告)号：US09194440B2

公开(公告)日：2015-11-24

申请号：US14141269

申请日：2013-12-26

Applicant: NHK SPRING CO., LTD.

Inventor： Yusuke Terada ,  Shuji Ando

IPC: F16D13/58 ,  B21D28/06 ,  B21D53/16 ,  F16D25/0638 ,  F16D25/12 ,  F16F1/32 ,  B23D31/02

CPC classification number: F16D13/583 ,  B21D28/06 ,  B21D53/16 ,  B23D31/02 ,  F16D25/0638 ,  F16D25/12 ,  F16F1/32 ,  Y10T29/49609 ,  Y10T29/49611

Abstract: A clutch apparatus is equipped with two clutch structures having a clutch drum therein. A driven plate and a piston are provided in the clutch drum of each clutch structure, and a primary coned disc spring and a secondary coned disc spring, which are ring-shaped, are provided between the driven plate and the piston. A flat portion is formed on an inner peripheral portion of a convex surface of the primary coned disc spring, and the flat portion can come into contact with a counter member first when a load is applied. A load in a flat condition due to elastic deformation is adjusted by the flat portion so as to be a desirable value. Blanks and of the primary coned disc spring and the secondary coned disc spring can be obtained from one sheet of material having the same thickness. In this case, the flat portion is formed by press forming on an inner peripheral portion of the blank in view of the shape thereof after bending forming is performed.

Abstract translation: 离合器装置配备有两个离合器结构，其中具有离合器鼓。 驱动板和活塞设置在每个离合器结构的离合器鼓中，并且在从动板和活塞之间设置环形的初级蝶形弹簧和次级蝶形弹簧。 在主蝶形弹簧的凸面的内周部形成有平坦部，当施加负载时，平坦部可以首先与计数构件接触。 通过平坦部分调节由于弹性变形而处于平坦状态的负载，从而成为期望值。 可以从具有相同厚度的一片材料获得坯料和初级盘形弹簧和次级碟形弹簧。 在这种情况下，通过在进行弯曲成形之后考虑到其形状，在坯料的内周部上通过冲压成形来形成平坦部。

公开(公告)号：US20170179797A1

公开(公告)日：2017-06-22

申请号：US15327347

申请日：2015-07-27

Applicant: NHK SPRING CO., LTD.

Inventor： Shuji Ando ,  Michinobu Hirama

IPC: H02K15/02 ,  B23K26/21

CPC classification number: H02K15/02 ,  B23K26/21 ,  B23K26/26 ,  B23K2101/36 ,  B23K2103/02

Abstract: In a method for manufacturing a stacked iron core, a stacked iron core body is manufactured by stacking so as to be phase-offset with respect to each other in the circumferential direction plural ring-shaped iron core pieces respectively configured by plural circular arc-shaped iron core pieces arranged into ring shapes. Next, each layer of the circular arc-shaped iron core pieces, which are phase-offset with respect to each other in the circumferential direction, is welded together along a stacking direction at plural locations (plural weld portions) arranged around the circumferential direction of an inner circumferential portion or an outer circumferential portion of the stacked iron core body. A pair of key protrusions is formed on inner circumferential portions of the stacked iron core at positions opposing each other, and so key components are rendered unnecessary when assembling a rotor of a vehicle drive motor.