本发明涉及步进马达以及车辆用指针仪表。对旋转体(4)进行旋转驱动的步进马达(6)具备:输出齿轮(636),具有与上述旋转体一起绕旋转中心线(C)旋转的输出轴部(637)、以及从上述输出轴部向外周侧扩展的最末级齿轮部(638);向心轴承(87、2087),对在比上述最末级齿轮部靠轴向一方侧被插入到内周侧的上述输出轴部进行径向支承;减速机构(R),具有上述最末级齿轮部啮合的第一减速齿轮(635)、以及在比上述最末级齿轮部靠上述轴向一方侧上述第一减速齿轮啮合的第二减速齿轮(634);以及突起体(89、2089、3089),在特定区域(A)中,从上述向心轴承起向轴向另一方侧突出,其中,特定区域从上述上述输出齿轮中包含上述旋转中心线的纵剖面(L)起向与上述第一减速齿轮相反侧扩展。

    A step motor that rotationally drives a rotating body includes: an output gear having an output shaft that rotates around a rotation center line together with the rotating body, and a final gear extending radially outward from the output shaft; a radial bearing having an inner circumference side that radially supports the output shaft, on one side of the final gear in an axial direction; a reduction gear mechanism having a first reduction gear meshed with the final gear, and a second reduction gear meshed with the first reduction gear on the one side of the final gear in the axial direction; and a protrusion protruding from the radial bearing toward the other side in the axial direction, in a specific area extending from a longitudinal cross section of the output gear including the rotation center line to an opposite side away from the first reduction gear.


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    Titel :

    步进马达以及车辆用指针仪表


    Erscheinungsdatum :

    2021-07-09


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    G01D MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE , Anzeigen oder Aufzeichnen in Verbindung mit Messen allgemein / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES