Small motor equipped with a worm-type reduction gear mechanism

摘要

In a small motor (10) equipped with a worm-type reduction gear, in which a worm (20), an armature (15) and the like are mounted on the outer periphery of an intermediate portion of a drive shaft (13) and fixed to it, the drive shaft (13) is inserted in a reduction gear casing (31), the result of which being that a worm wheel (33) meshes with the worm (20), a journal (21) having an outer diameter which is greater than that of the worm (20) is provided, projecting in a position close to the worm (20) of the drive shaft (13), a bearing (24) in the intermediate portion is fixed to the reduction gear casing (31) and the journal (21) is supported by this bearing (24) in the intermediate portion. IMAGE