To prevent a press-fit load of a rotor from being reduced by a press-fit fixing part even in the case where an oil sneaks into an inner peripheral surface of an output shaft before inserting the rotor to the output shaft.SOLUTION: An output shaft 637 is formed in a cylindrical shape including an insertion hole 637 in which a rotor 4 can be inserted, and rotationally driven by a drive source D. A bearing 85 supports the output shaft 637 from an outer peripheral side in such a manner that the output shaft can be slid. The output shaft 637 is provided on an inner peripheral surface forming the insertion hole 637a and includes a press-fit fixing part 81 by which the rotor 4 is press-fitted and fixed in a rotatable manner integrally with the output shaft 637. The press-fit fixing part 81 includes six grooves 86a-86f, 86g-86l and 86m-86r extending in a direction along a rotation axis of the output shaft 637.SELECTED DRAWING: Figure 5
【課題】回転体を出力軸に挿入する前に出力軸の内周面にオイルが回り込んだ場合でも、圧入固定部による回転体の圧入荷重が低下することを抑制する。【解決手段】出力軸637は、回転体4が挿入可能な挿入孔637aを有する筒状であり、駆動源Dによって回転駆動される。軸受け85は、出力軸637を外周側から摺動可能に支持する。出力軸637は、挿入孔637aを形成する内周面に備えられ、回転体4を出力軸637と一体に回転可能に圧入固定する圧入固定部81を有する。圧入固定部81は、出力軸637の回転軸に沿った方向に延びる6つの溝86a〜86f,86g〜86l,86m〜86rを有する。【選択図】図5
ROTARY DRIVE DEVICE AND VEHICULAR POINTER INSTRUMENT
回転駆動装置及び車両用指針計器
2021-05-20
Patent
Elektronische Ressource
Japanisch
IPC: | H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / F16D COUPLINGS FOR TRANSMITTING ROTATION , Nicht schaltbare Kupplungen / G01D MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE , Anzeigen oder Aufzeichnen in Verbindung mit Messen allgemein |