Motor stator with improved connection member
First Claim
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1. A motor stator, comprising:
- a stator core formed by laminating thin plates and having a plurality of salient poles projecting in a radial direction;
a stator winding wound around each salient pole of the stator core; and
a connection member connected to the stator winding to supply the stator winding with a current,wherein;
the connection member is formed by covering one or more than one bus bar with an insulating resin, each bus bar being a belt-shaped conductor formed in an arc-like shape in a thickness direction of the belt-shaped conductor and covered with the insulating resin at least in a portion opposing a coil end of the stator winding;
a weld zone is formed on the bus bar;
the weld zone has a projection portion projecting in a width direction of the bus bar, a first bent portion bent outside the arc from the projection portion in a thickness direction of the bus bar, and a second bent portion with a tip end thereof folded back in the width direction to allow the tip end of the second bent portion to be welded to a terminal on the stator winding; and
the weld zone does not project beyond the insulating resin of the connection member in the width direction.
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Accused Products
Abstract
A connection member for supplying a stator winding with a current is constituted by covering a bus bar with a insulating resin. The bus bar is formed in an arc-like shape in the thickness direction of a belt-shaped conductor. Additionally, a weld zone formed on the bus bar has a projection portion projecting in the width direction, a first bent portion bent outside the arc from the projection portion in the thickness direction, and a second bent portion with the tip end thereof folded back in the width direction to allow the tip end of the second bent portion to be welded to a terminal on the stator winding.
20 Citations
6 Claims
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1. A motor stator, comprising:
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a stator core formed by laminating thin plates and having a plurality of salient poles projecting in a radial direction; a stator winding wound around each salient pole of the stator core; and a connection member connected to the stator winding to supply the stator winding with a current, wherein; the connection member is formed by covering one or more than one bus bar with an insulating resin, each bus bar being a belt-shaped conductor formed in an arc-like shape in a thickness direction of the belt-shaped conductor and covered with the insulating resin at least in a portion opposing a coil end of the stator winding; a weld zone is formed on the bus bar; the weld zone has a projection portion projecting in a width direction of the bus bar, a first bent portion bent outside the arc from the projection portion in a thickness direction of the bus bar, and a second bent portion with a tip end thereof folded back in the width direction to allow the tip end of the second bent portion to be welded to a terminal on the stator winding; and the weld zone does not project beyond the insulating resin of the connection member in the width direction. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification
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Current AssigneeMitsubishi Electric Corporation
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Original AssigneeMitsubishi Electric Corporation
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InventorsNakamura, Masashi, Okamoto, Shogo, Bessho, Tomohiro, Sakamoto, Katsuhiko
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Primary Examiner(s)Quinones, Jose Gonzalez
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Application NumberUS14/650,930Publication NumberTime in Patent Office1,840 DaysField of Search310 71, 310180, 310144, 310179, 310184, 310194, 310208US Class CurrentCPC Class CodesH02K 2203/09 Machines characterised by w...H02K 3/522 for generally annular cores...
