A stator for an electric motor comprising: a stator core formed of a magnetic material and having a plurality of teeth extending towards a central hole of the stator core; coil wound bodies attached to the teeth, and having each a bobbin and a coil formed by winding a conductive wire around the bobbin; all of the bobbins respectively attached to the plurality of teeth are provided in the same shape; each bobbin having an inner flange portion provided at the side of the bobbin facing the central hole; a first engagement portion provided at one end side in a circumferential direction of the inner flange portion; and a second engagement portion provided at the other end side in the circumferential direction of the inner flange portion, and coming into contact with the first engagement portion of the adjacent coil wound body, characterized in that, the first engagement portion and the second engagement portion are provided with a first tapered portion (111A, 121A) in parallel with a moving direction of the adjacent coil wound bodies along the teeth, the tapered portion (111A, 121A) being defined by two side faces forming the taper and the face closest to the adjacent coil wound body extending in parallel to the moving direction of the adjacent coil wound body along the tooth; the first engagement portion being provided with a corner portion at one end of the circumferential direction of the first tapered portion of the first engagement portion, the second engagement portion being provided with a protruding portion protruding from the first tapered portion of the second engagement portion at the other end side of the circumferential direction of the first tapered portion, the bobbin being arranged such that the inner flange portion elastically deforms to a degree that the coil wound body is allowed to move along the moving direction upon insertion of the coil wound body onto the tooth, when the corner portion and the protruding portion existing in the inner flange portion collide with the protruding portion and the corner portion, respectively, of the adjacent coil wound bodies upon moving the coil wound body from the central hole to an outer direction along the tooth, latching engagement of the corner portion with the protruding portion prevents the adjacent engagement portions (110, 120) from slipping from each other towards the central hole. a stator core formed of a magnetic material and having a plurality of teeth extending towards a central hole of the stator core; coil wound bodies attached to the teeth, and having each a bobbin and a coil formed by winding a conductive wire around the bobbin; all of the bobbins respectively attached to the plurality of teeth are provided in the same shape; each bobbin having an inner flange portion provided at the side of the bobbin facing the central hole; a first engagement portion provided at one end side in a circumferential direction of the inner flange portion; and a second engagement portion provided at the other end side in the circumferential direction of the inner flange portion, and coming into contact with the first engagement portion of the adjacent coil wound body, characterized in that, the first engagement portion and the second engagement portion are provided with a first tapered portion (111A, 121A) in parallel with a moving direction of the adjacent coil wound bodies along the teeth, the tapered portion (111A, 121A) being defined by two side faces forming the taper and the face closest to the adjacent coil wound body extending in parallel to the moving direction of the adjacent coil wound body along the tooth; the first engagement portion being provided with a corner portion at one end of the circumferential direction of the first tapered portion of the first engagement portion, the second engagement portion being provided with a protruding portion protruding from the first tapered portion of the second engagement portion at the other end side of the circumferential direction of the first tapered portion, the bobbin being arranged such that the inner flange portion elastically deforms to a degree that the coil wound body is allowed to move along the moving direction upon insertion of the coil wound body onto the tooth, when the corner portion and the protruding portion existing in the inner flange portion collide with the protruding portion and the corner portion, respectively, of the adjacent coil wound bodies upon moving the coil wound body from the central hole to an outer direction along the tooth, latching engagement of the corner portion with the protruding portion prevents the adjacent engagement portions (110, 120) from slipping from each other towards the central hole.