Panasonic Intellectual Property Management Co., Ltd.

Hirokatsu Kunitomo

Mitsuoki Hishida

Hiroshi Yoneda

Yuichi Yoshikawa

An insulator includes a part to be wound with a coil, a first flange, and a second flange. The first flange is formed at the side of the part closer to a core segment, and includes a coil guide groove that guides the coil to the part. The second flange is formed at the side closer to a distal end of a tooth. The coil guide groove includes a first groove extending at an acute angle &#x3b8; from an inner surface of the first flange.

Insulator, and stator and motor comprising same

An insulator includes a part to be wound with a coil; a first flange; and a second flange. The first flange is formed at the side of the part closer to a core segment, and includes a coil guide groove that guides the coil to the part. The second flange is formed at the side of the part closer to a distal end of a teeth. The coil guide groove includes a first guide groove and a second guide groove symmetrical with respect to a radial plane. Each of the first and second guide grooves and&#x2014;extends at an acute angle from an inner surface of the first flange.

An insulator includes a part to be wound with a coil of a wiring wire with a circular cross section; first and second flanges. The first flange is formed at the side of the part closer to a core segment. The second flange is formed at the side closer to a distal end of a tooth. The part to be wound with the coil has a slope continuous with the first flange and inclined so that a height from an upper surface of the tooth increases from the first flange toward the second flange. Expression 0&#x3c;(&#x2212;6.8 D+b)&#x2264;&#x3b1;&#x3c;30 is satisfied, where b is a constant and 8.3&#x2264;b&#x2264;11.6 is satisfied, D (mm) is a diameter of the coil, and &#x3b1; (&#xb0;) is an angle of the slope inclined from the upper surface of the tooth as a reference surface.

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Osaka, Japan

Hirokatsu Kunitomo