Coil alignment device and coil alignment method

Patent metadata

Field	Value
Publication number	US-12438422-B2
Application number	US-202217952799-A
Country	US
Kind code	B2
Filing date	Sep 26, 2022
Priority date	Mar 9, 2022
Publication date	Oct 7, 2025
Grant date	Oct 7, 2025

Abstract

A coil alignment device includes: a plate-shaped first jig having a plurality of grooves arranged along a circumferential direction so as to extend toward a radial-direction outer side; and a second jig that can contact with a segment coil inserted in the first jig. Each groove includes a storage portion extending along a radial direction and having a first length so that leg portions of the segment coils can be stored side by side in the radial direction, and a guiding portion extending from the storage portion toward the radial-direction outer side, and has a first shape so that, using, as a fulcrum, one leg portion inserted in the storage portion, the other leg portion is movable toward the storage portion. The second jig is movable to press the segment coil from a radial-direction side and store the other leg portion into the storage portion.

First claim

What is claimed is:

1. A coil alignment device for forming an annular coil aligned unit by aligning, in an annular shape, a plurality of segment coils each having a pair of leg portions and a connection portion connecting ends of the pair of leg portions, the coil alignment device comprising:
a plate-shaped first jig having a plurality of grooves into which the leg portions of the segment coils are to be inserted and which are arranged at set intervals along a circumferential direction on a first circle located at a first distance from a first point corresponding to a position of a center point of the coil aligned unit such that each groove extends from the first circle toward a radial-direction outer side; and
segment coil inserted in the first jig, from a radial-direction side, by reducing a relative distance to the first jig, wherein
each groove includes:
a storage portion extending along a radial direction so as to have such a first length L 1 that allows a plurality of the leg portions to be stored side by side in the radial direction from the first circle, and
a guiding portion further extending from the storage portion toward the radial-direction outer side,

where, among the plurality of grooves arranged along the circumferential direction, the groove into which a first leg portion as one of the leg portions of the segment coil is to be inserted is defined as a first groove, and the groove located toward a first-direction side which is one side in the circumferential direction from the first groove is defined as a second groove,
the guiding portion of each groove is formed in such a first shape that, using, as a fulcrum, the first leg portion inserted in the storage portion of the first groove, a second leg portion as another of the leg portions inserted in the guiding portion of the second groove is movable toward the storage portion of the second groove, and
the second jig is movable so as to press at least one of the second leg portion or the connection portion of the segment coil from the radial-direction outer side, thus causing the second leg portion in the guiding portion of the second groove to be stored into the storage portion of the second groove, wherein,
the storage portion is configured such that, among inner walls on both sides in the circumferential direction, at least an inner wall on one circumferential-direction side has the first length L 1 and extends linearly from the first circle, and
the first shape of the guiding portion is made such that, of inner walls on both sides in the circumferential direction of the guiding portion, the inner wall on at least the one side in the circumferential direction is sloped from the radial direction toward a second-direction side which is another side in the circumferential direction,
a slope of the first shape of the guiding portion is configured to have a curvature and a length such that, in a state before pressing of each of the segment coils by the second jig, the connection portion of another segment coil, having its first-leg portions inserted into the groove located between the first leg portion and the second leg portion of one segment coil, are disposable within a range of a rotation angle of the second leg portion.

2. The coil alignment device according to claim 1 , wherein
the storage portion is formed in such a shape that supports the first leg portion inserted in the storage portion so that the first leg portion is rotatable around an axis of the first leg portion.

3. A coil alignment device for forming an annular coil aligned unit by aligning, in an annular shape, a plurality of segment coils each having a pair of leg portions and a connection portion connecting ends of the pair of leg portions, the coil alignment device comprising:
a plate-shaped first jig having a plurality of grooves into which the leg portions of the segment coils are to be inserted and which are arranged at set intervals along a circumferential direction on a first circle located at a first distance from a first point corresponding to a position of a center point of the coil aligned unit such that each groove extends from the first circle toward a radial-direction outer side; and
a second jig configured to contact the segment coil inserted in the first jig, from a radial-direction side, by reducing a relative distance to the first jig, wherein
each groove includes:
a storage portion extending along a radial direction so as to have such a first length L 1 that allows a plurality of the leg portions to be stored side by side in the radial direction from the first circle, and
a guiding portion further extending from the storage portion toward the radial-direction outer side,

where, among the plurality of grooves arranged along the circumferential direction, the groove into which a first leg portion as one of the leg portions of the segment coil is to be inserted is defined as a first groove, and the groove located toward a first-direction side which is one side in the circumferential direction from the first groove is defined as a second groove,
the guiding portion of each groove is formed in such a first shape that, using, as a fulcrum, the first leg portion inserted in the storage portion of the first groove, a second leg portion as another of the leg portions inserted in the guiding portion of the second groove is movable toward the storage portion of the second groove, and
the second jig is movable so as to press at least one of the second leg portion or the connection portion of the segment coil from the radial-direction outer side, thus causing the second leg portion in the guiding portion of the second groove to be stored into the storage portion of the second groove,
wherein
the first shape of the guiding portion is made such that, of inner walls on both sides in the circumferential direction of the guiding portion, the inner wall on at least the one side in the circumferential direction is sloped from the radial direction toward a second-direction side which is another side in the circumferential direction,
each of the plurality of grooves further includes an inner-side guiding portion formed so as to extend from the storage portion toward a radial-direction inner side,
where, among the plurality of grooves arranged along the circumferential direction, the groove located toward the second-direction side from the first groove is defined as a third groove,
the inner-side guiding portion of each groove is formed in such a second shape that, using, as a fulcrum, a third leg portion as one of the leg portions of another of the segment coils that is inserted, in the storage portion of the first groove, on the radial-direction inner side of the first leg portion of the segment coil inserted in the storage portion of the first groove, a fourth leg portion as the leg portion of the other segment coil inserted in the inner-side guiding portion of the third groove is movable toward the storage portion of the third groove, and
the second jig is movable so as to press at least one of the fourth leg portion or the connection portion of the segment coil from the radial-direction inner side, thus causing the fourth leg portion in the inner-side guiding portion of the third groove to be stored into the storage portion of the third groove.

4. The coil alignment device according to claim 3 , wherein
the second shape of the inner-side guiding portion is made such that, of inner walls on both sides in the circumferential direction of the inner-side guiding portion, the inner wall on at least the one side in the circumferential direction is sloped toward the second-direction side from the radial direction.

5. The coil alignment device according to claim 1 , wherein
the first shape is made such that the inner wall on at least the one side in the circumferenti

Assignees

• Mitsubishi Electric Corp

Inventors

• Mori Akihito
• Yasuda Hiroyuki
• Hirohashi Kota
• Yuya Masahiro
• Yamamoto Shunsuke
• Yamaguchi Kyosuke
• Yokogawa Tetsuya
• Ito Katsuya

Classifications

• H02K15/064

  Windings consisting of separate segments · CPC title

• H02K15/20

  Shaping or compacting conductors or winding heads after the installation of the winding in the cores or machines; Applying fastening means on winding heads · CPC title

• H02K3/50

  Fastening of winding heads, equalising connectors, or connections thereto · CPC title

• H02K3/48

  in slots · CPC title

• H02K15/043 Primary

  winding flat conductive wires or sheets · CPC title