DRIVING DEVICE

A driving device (10) includes an electric motor (11), a drive gear (12), a deceleration mechanism (13), a driven gear (14), and a housing (2). At least either one of the drive gear (12) and the driven gear (14) is provided as a helical gear. The deceleration mechanism (13) includes a plurality of reduction gear shafts (3), a plurality of bearings, and a biasing member provided for at least any one of the bearings. The biasing member axially biases an outer ring of the at least any one of the bearings that supports at least either one of end parts of the shaft portion (30) of a corresponding one of the reduction gear shafts (3), the end parts including an end part on the large-diameter gear wheel (31) side and an end part on the small-diameter gear wheel (32) side. 一种驱动装置(10)，包括电动马达(11)、主动齿轮(12)、减速机构(13)、从动齿轮(14)以及壳体(2)。主动齿轮(12)和从动齿轮(14)中的至少任一个被设置为斜齿轮。减速机构(13)包括多个减速齿轮轴(3)、多个轴承以及偏压构件，该偏压构件是为轴承中的至少任一个设置的。偏压构件轴向偏压该轴承中的所述至少任一个的外圈，该轴承中的所述至少任一个支撑减速齿轮轴(3)中的对应一个的轴部(30)的端部中的至少任一个，该端部包括在大直径齿轮(31)侧上的端部和在小直径齿轮(32)侧上的端部。