1. A stator for an electric rotating machine, the stator comprising:
a hollow cylindrical stator core having a plurality of slots that are formed in a radially inner surface of the stator core and spaced in a circumferential direction of the stator core; and
a stator coil comprised of a plurality of electric wires mounted on the stator core, the stator coil being partially received in the slots of the stator core to have a pair of coil end parts that respectively protrude from a pair of axial end faces of the stator core,
wherein
the stator coil is a multi-phase stator coil which is comprised of a plurality of phase windings,
each of the phase windings of the stator coil is formed of at least two of the electric wires,
one of the two electric wires has an end portion led out from a radially inner periphery of one of the slots of the stator core while the other electric wire has an end portion led out from a radially outer periphery of another one of the slots of the stator core,
the end portions of the two electric wires are joined together to form a joint therebetween, and
the joint is positioned axially outward of one of the coil end parts of the stator coil without radially protruding from the coil end part.
2. The stator as set forth in claim 1, wherein the joint is substantially equidistant from the two slots from which the end portions of the two electric wires are respectively led out.
3. The stator as set forth in claim 1, wherein the end portion which is led out from the radially inner periphery of the one slot is bent radially outward while the end portion which is led out from the radially outer periphery of the another slot is bent radially inward.
4. The stator as set forth in claim 1, wherein the end portions of the two electric wires have respective distal end surfaces that are arranged to face each other in a radial direction of the stator core, and
the distal end surfaces of the end portions are joined together to form the joint between the end portions.
5. The stator as set forth in claim 1, wherein the end portions of the two electric wires have respective circumferential side surfaces that are arranged to face each other in the circumferential direction of the stator core, and
the circumferential side surfaces of the end portions are joined together to form the joint between the end portions.
6. The stator as set forth in claim 1, wherein the end portions of the two electric wires have respective axial side surfaces that are arranged to face each other in the axial direction of the stator core, and
the axial side surfaces of the end portions are joined together to form the joint between the end portions.
7. The stator as set forth in claim 1, wherein each of the end portions of the two electric wires has a distal end surface that is formed to extend obliquely with respect to a longitudinal direction of the end portion, and
the distal end surfaces of the end portions are arranged to abut each other and joined together to form the joint between the end portions.
8. The stator as set forth in claim 1, wherein each of the end portions of the two electric wires has a distal end surface,
the distal end surface of one of the end portions has a protrusion formed thereon while the distal end surface of the other end portion has a recess formed therein,
the distal end surfaces of the end portions are arranged to abut each other with the protrusion fitted into the recess, and
the distal end surfaces are joined together to form the joint between the end portions.
9. The stator as set forth in claim 1, wherein each of the end portions of the two electric wires is stepped at its distal end to have first to third surfaces, the first surface being perpendicular to a longitudinal direction of the end portion and positioned distalmost in the end portion, the second surface being perpendicular to the longitudinal direction and recessed from the first surface in the longitudinal direction, the third surface extending parallel to the longitudinal direction to connect the first and second surfaces,
the end portions are arranged so that the first, second and third surfaces of one of the end portions respectively abut the second, first and third surfaces of the other end portion, and
the abutting pairs of the first to third surfaces of the end portions are joined together to form the joint between the end portions.
10. The stator as set forth in claim 1, wherein both the end portions of the two electric wires are bent axially outward at their respective distal ends so as to have parts of the end portions in pressed contact with each other, and
the parts of the end portions which are in pressed contact with each other are joined together to form the joint between the end portions.
11. The stator as set forth in claim 1, wherein each of the electric wires forming the stator coil is comprised of a plurality of electric wire segments that are respectively inserted in corresponding ones of the slots of the stator core and joined to one another by welding.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A fluorine-containing composition comprising a fluorine-containing elastomer (A) and a fluorine-containing elastomer (B) having a lower molecular weight than the fluorine-containing elastomer (A), wherein the fluorine amount of the fluorine-containing elastomer (B) is larger than a fluorine amount of the fluorine-containing elastomer (A), the fluorine amount of the fluorine-containing elastomer (A) is at least 69% by weight to less than 71% by weight, the fluorine amount of the fluorine-containing elastomer (B) is at least 72% by weight to at most 76% by weight, and an amount of the fluorine-containing elastomer (B) is 0.1 to 90 parts by weight based on 100 parts by weight of the fluorine-containing elastomer (A).
2. The fluorine-containing elastomer composition of claim 1, wherein a Mooney viscosity of the fluorine-containing elastomer (B) at 100\xb0 C. is at most 60.
3. The fluorine-containing elastomer composition of claim 1, wherein a Mooney viscosity of the fluorine-containing elastomer composition at 121\xb0 C. is at most 90.
4. The fluorine-containing elastomer composition of claim 1, wherein a Mooney viscosity of the fluorine-containing elastomer composition at 121\xb0 C. is at most 82, and a fuel permeation rate of a fuel comprising 45% by volume of toluene, 45% by volume of isooctane and 10% by volume of ethanol at 40\xb0 C. is at most 18 g\xb7mmday\xb7m2.
5. The fluorine-containing elastomer composition of claim 1, wherein the fluorine-containing elastomer (A) is a vinylidene fluoride fluorine rubber.
6. The fluorine-containing elastomer composition of claim 1, further comprising a curing agent (C).
7. The fluorine-containing elastomer composition of claim 6, comprising a polyol curing agent as the curing agent (C).
8. A molded article, which is obtained by curing the flourine-containing elastomer composition of claim 1.
9. A fuel hose for an automobile, which is obtained by curing the fluorine-containing elastomer composition of claim 1.