Manufacturing device and manufacturing method for stator of rotating electrical machine

Patent metadata

Field	Value
Publication number	US-9698658-B2
Application number	US-201214342132-A
Country	US
Kind code	B2
Filing date	Aug 27, 2012
Priority date	Sep 6, 2011
Publication date	Jul 4, 2017
Grant date	Jul 4, 2017

Abstract

A manufacturing device for a stator of a rotating electrical machine includes a jig, a support section, link mechanisms and press sections. The jig has holding grooves into which linear portions of coils can be respectively inserted. The jig can be arranged on the inner side of a stator core while holding grooves respectively face the openings of slots. Each of the link mechanisms has a push-out member and a link. The link moves a corresponding push-out member in a direction from the bottom portion of the holding groove to a corresponding slot and in a direction from the slot to the bottom portion. The push-out members can concurrently apply a pressing force to all the coil ends of the coils from the axial direction of the stator core in synchronization with the link mechanisms.

First claim

The invention claimed is:

1. A manufacturing device for a stator of a rotating electrical machine, wherein the stator includes an annular stator core, which includes a plurality of slots, and a coil attached to the stator core, each of the slots includes an opening, which opens in an inner circumference of the stator core, and a bottom portion, the slots are arranged at a slot pitch from an adjacent one of the slots, the slot pitch increases from the opening toward the bottom portion, and the coil includes a plurality of straight portions, which are respectively inserted into the slots, and a plurality of coil ends, which are continuous with the straight portions, the manufacturing device comprising:
a jig including a plurality of holding grooves into which the straight portions of the coil are insertable, wherein each of the holding grooves includes a bottom portion and an opening, adjacent ones of the holding grooves are arranged at a pitch that is the same as the openings of the adjacent ones of the slots in the stator core, and the jig is arrangeable at an inner side of the stator core when the holding grooves respectively face the openings of the slots;
a support unit that supports the stator core and the jig, which is arranged at the inner side of the stator core, in a concentric state;
a plurality of link mechanisms provided in the jig, wherein each of the link mechanisms includes a pushing member and a link, the pushing member is arrangeable closer to the bottom portion of each holding groove than the straight portion inserted into the holding groove, the link is arranged at an outer side of an end face of the stator core in an axial direction and at an inner side in a radial direction of the stator core from the pushing member, and the link moves the corresponding pushing member in a direction from the bottom portion of the holding groove toward the corresponding slot and from the slot toward the bottom portion;
a plurality of pushing units that simultaneously applies a pushing force from the axial direction of the stator core to all of the coil ends of the coil in synchronism with the link mechanism when the straight portions are respectively inserted into the holding grooves of the jig supported by the support unit and the coil ends respectively project outside in the axial direction of the stator core from an end face of a portion including the holding grooves of the jig;
an upper drive member;
a lower drive member;
an upper support member fixed to an upper end of the jig; and
a lower support member fixed to a lower end of the jig, wherein
the link includes:
an upper first link arranged in an upper portion of the jig, wherein the upper first link includes a first end that is pivotally coupled to an upper end of the corresponding pushing member and a second end that is pivotally coupled to the upper drive member,
an upper second link including a first end that is pivotally coupled to the upper support member and a second end that is pivotally coupled to an intermediate portion of the upper first link;
a lower first link arranged at a lower portion of the jig, wherein the lower first link includes a first end that is pivotally coupled to a lower end of the corresponding pushing member and a second end that is pivotally coupled to the lower drive member; and
a lower second link including a first end that is pivotally coupled to the lower support member and a second end that is pivotally coupled to an intermediate portion of the lower first link.

2. The manufacturing device for a stator of a rotating electrical machine according to claim 1 , wherein each of the pushing units includes a pushing member that is provided for each of the coil ends and allows for application of a pushing force to each coil end toward a radially outer side of the stator core.

3. The manufacturing device for a stator of a rotating electrical machine according to claim 2 , wherein
the plurality of pushing units are two pushing units arranged at two axial sides of the stator core sandwiching the stator core supported by the support unit;
each of the two pushing units includes a support plate and a turning plate, wherein the support plate includes a plurality of straight guide grooves each extending parallel to the slots in correspondence with the slots of the stator core, and the turning plate includes a spiral guide groove and is supported to be turnable at a side of the support plate opposite to the stator core; and
each pushing member includes a portion that is movable along the straight guide groove and an engagement portion that engages the spiral guide groove.

4. The manufacturing device for a stator of a rotating electrical machine according to claim 3 , wherein the support plate of one of the two pushing units is movable with the corresponding turning plate and the pushing member to a position where the support plate is not an obstacle trouble when moving the stator core to a position where the stator core is supported by the support unit or when removing the stator core from the position where the stator is supported by the support unit.

5. The manufacturing device for a stator of a rotating electrical machine according to claim 1 , wherein,
the upper drive member and the lower drive member are located at two ends of the jig in the axial direction of the stator core, and
the upper drive member and the lower drive member apply to at least each of the pushing member a drive force for moving the pushing member from the bottom portion of the corresponding holding groove to the corresponding slot.

6. The manufacturing device for a stator of a rotating electrical machine according to claim 5 , wherein each of the link mechanisms uses a biasing force of a torsion spring as the drive force for moving the pushing member to the bottom portion of the holding groove.

7. The manufacturing device for a stator of a rotating electrical machine according to claim 1 , wherein the support unit is formed to be movable to a standby position and an inserting position, the stator core and the jig are removed from the support unit at the standby position, and a center position of the stator core supported by the support unit is located coaxially with a pushing portion of the pushing unit to insert the coil into the stator core at the inserting position.

8. The manufacturing device for a stator of a rotating electrical machine according to claim 1 , wherein the plurality of straight portions are a set of a first side and a second side, each of the plurality of coil ends is a coil end having a projecting shape, each of the first side and the second side includes a first end and a second end, and the coil ends are continuous with the first ends and the second ends.

Assignees

• Yamaguchi Kazuyuki
• Toyota Jidoshokki Kk

Inventors

• Yamaguchi Kazuyuki

Classifications

• Y10T29/49009

  Dynamoelectric machine · CPC title

• H02K15/066 Primary

  inserted perpendicularly to the axis of the slots or inter-polar channels · CPC title

• Y10T29/53143

  Motor or generator · CPC title

• H02K15/026

  Wound cores · CPC title

• H02K15/065 Primary

  Windings consisting of complete sections, e.g. coils or waves · CPC title