Insulating member for slot coil of rotary electric machine and method for molding the same
AssigneeNakagawa Special Steel Inc.
InventorNoritaka Ogawa
Life of this patent
Estimating the term…
Abstract
Thermoplastic synthetic resin flowing through both gates 173, 173 into lug part flanges 16, 16 collides with a confronting wall 161, converts direction of flow by 90°, changing velocity of flow, and thus fills the lug part flanges 16, 16 and flanges 15,15 on the long side. After this, as thermoplastic synthetic resin flows into thin outer peripheral walls 131, 132 and partition walls 133 at an optimum velocity of flow, thermoplastic synthetic resin flows smoothly and it is possible to form a smooth molded article. The lug part flanges 16,16 and the flanges 15, 15 on the long side serve as runners, so that thermoplastic synthetic resin flows smoothly into the thin outer peripheral walls 131,132 and partition wall 133.
Claims8
A method for molding an insulating member for a slot coil of a rotary electric machine, wherein said slot coil being fitted into a slot provided in a stator or rotor of the rotary electric machine, and the method comprises:
- forming the insulating member by molding of thermoplastic synthetic resin, wherein the insulating member is formed with through-holes with rectangular cross section for inserting lead wire and the through-holes are parallel to each other, and the insulating member has partition walls and outer peripheral walls for insulating the lead wire electrically, and
- inserting the lead wire into the through-holes, wherein the lead wire having a cross section similar to the cross section of the through-holes;
- wherein said insulating member has at least one flange formed on periphery at one end thereof as well as formed to be thicker than the partition walls and the outer peripheral walls, the at least one flange serving as flow path for injected molten resin as the thermoplastic synthetic resin when the insulating member is formed by injection molding;
- wherein in the method for molding the insulating member, lug part flanges are disposed to be integral with the at least one flange for causing molten resin to flow through gates for injecting the molten resin, after then to convert direction of flow by 90° twice and then to flow into the at least one flange when the insulating member is formed by injection molding of molten resin.
A method for molding an insulating member for a slot coil of a rotary electric machine, wherein said slot coil being fitted into a slot provided in a stator or rotor of the rotary electric machine, and the method comprises:
- forming the insulating member by molding of thermoplastic synthetic resin, wherein the insulating member is formed with through-holes with rectangular cross section for inserting lead wire and the through-holes are parallel to each other, and the insulating member has partition walls and outer peripheral walls for insulating the lead wire electrically, and
- inserting the lead wire into the through-holes, wherein the lead wire having a cross section similar to the cross section of the through-holes;
- wherein said insulating member has at least one flange formed on periphery at one end thereof as well as formed to be thicker than the partition walls and the outer peripheral walls, the at least one flange serving as flow path for injected molten resin as the thermoplastic synthetic resin when the insulating member is formed by injection molding;
- wherein the insulating member is formed by injection molding through at least one fan gate provided on a long side of the at least one flange and having same width with the long side when the insulating member is formed by injection molding.
Dependencies are inferred from the claim text.