PROBLEM TO BE SOLVED: To make eccentricity unlikely to occur when connecting a drive shaft and a rotary vane in an electric motor for rotationally driving the rotary vane.SOLUTION: An electric motor 1 is configured to rotationally drive a rotary vane by connecting a drive shaft 12 to a connection hole 210 that is formed in a hub 21 of the rotary vane. At a distal end side of the drive shaft 12, a screw part 12a is provided to be threaded into a screw hole part 210a with which a screw groove is formed within the connection hole 210 and at a proximal side of the drive shaft, a tapered part 12b is formed which is formed in a tapered shape from an opening end of the connection hole 210 to predetermined depth and of which the outer peripheral surface shape is matched to an inner peripheral surface shape of a tapered hole part 210b having a distal end side matched an inner diameter of the screw hole part 210a. The drive shaft 12 is inserted into the connection hole 210 and rotated in a motor rotation direction. Thus, an outer peripheral surface of the tapered part 12b is adhered to an inner peripheral surface of the tapered hole part 210b while threading the screw part 12a into the screw hole part 210a, and the rotary vane and the drive shaft 12 are connected in the state where their axial centers are matched.SELECTED DRAWING: Figure 3
【課題】回転翼を回転駆動させるための電動モータにおいて、その駆動軸と回転翼を接続する際に偏心を生じにくくする。【解決手段】回転翼のハブ21に形成した接続穴210に駆動軸12を接続して回転翼を回転駆動させる電動モータ1であって、駆動軸12は、その先端側に接続穴210内でネジ溝を形成したネジ穴部210aに螺入するネジ部12aが設けられ、その基端側には接続穴210開口端から所定深さまで先細り状に形成され先端側がネジ穴部210aの内径に一致したテーパ穴部210bの内周面形状に外周面形状が一致するテーパ部12bが形成されており、駆動軸12を接続穴210に挿入してモータ回転方向に回すことで、ネジ部12aがネジ穴部210aに螺入されながらテーパ部12bの外周面がテーパ穴部210bの内周面に密着して、回転翼と駆動軸12が互いの軸心を一致した状態で接続されるものとした。【選択図】図3
ELECTRIC MOTOR FOR ROTARY VANE
回転翼用電動モータ
2017-02-02
Patent
Electronic Resource
Japanese
Development of the Electric Driven Vane Rotary Compressor
British Library Conference Proceedings | 2008
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