Patent ID: 9287743
Filing Date: 2016-03-15
CPC Classification: H01F,H02K,Y10T

Claim Text:
1. A stator including a split type stator core formed with a teeth portion and a slot, and a coil made of a conductor in a wound state including rectangular shape having a long side and a short side including a plurality of layers (n layers) in a circumferential direction of the stator core when the coil is inserted in the slot, wherein the coil includes a first row wound from an outer layer toward an inner layer, a second row wound from the inner layer toward the outer layer, a third row wound from the outer layer toward the inner layer, a fourth row wound from the inner layer toward the outer layer, a fifth row wound from the outer layer toward the inner layer, the coil has an outer end portion positioned on an outer circumferential side and an inner end portion positioned on an inner circumferential side, each protruding from the coil in an axial direction of the stator, the coil includes a coil end on a lead side having the outer and inner end portions and a coil end on a non-lead side not having the outer and inner end portions, both the coil ends protruding from an end surface of the state core in the axial direction, with respect to the number n of layers wound around the split type stator core of an insertion portion of the coil including the coil end portion on the non-lead side inserted in the slot, the number of layers wound around the split type stator core in a coil end portion on a lead side is n+1 or more, wherein the coil includes: a first bridging portion and a third bridging potion formed in an innermost layer in the coil end on the lead side and arranged in positions corresponding to alternate ones of the first to fourth rows in the radial directions so that the first bridging portion connects the first row and the second row and the third bridging portion connects the third row and the fourth row, a second bridging portion and a forth bridging portion formed in an outermost layer in the coil end on the lead side and arranged in positions corresponding to alternate ones of the first to fourth rows in the radial direction so that the second bridging portion connects the second row and the third row and the fourth bridging portion connects the fourth row and the fifth row, and the first bridging portion, the third bridging portion, the second bridging portion, and the fourth bridging portion being arranged in a staggered pattern in a cross section of the coil end on the lead side.