| 摘要 |
[Problem] To provide a stirring device wherein it is possible to expand or reduce the diameter of a stirring wind member without using a complex open/close mechanism, the stirring wing member is less prone to operation failure, and repairs are easily performed when there are damages. [Solution] A stirring device at least provided with: a drive part main body having a driving means; a drive shaft which penetrates the drive part main body in the top and bottom direction, extends toward the bottom of the drive part main body, and is rotated and driven by means of the driving means; at least two stirring wing members which are pivotally fitted to the bottom edge portion of the drive shaft, and which are installed in a protruding manner on the side of the driving shaft such that the diameters of the stirring wing members can expand or reduce; a slider member which is positioned on the bottom portion of the drive part main body and is configured such that the drive shaft is inserted in a freely fitting manner so as to be able to move in the top and bottom direction; and rod members of which one end is pivotally fitted to the slider member in a rotatable manner, and of which the other end is pivotally fitted in a rotatable manner to the base-end side part of the stirring wing members positioned on the side that is pivotally fitted to the drive shaft. When the drive shaft is moved upward relative to the drive part main body and the rod members pivotally fitted to the base-end side part of the stirring wing members are moved in the direction that bears away from the drive shaft, the outside end part of the stirring wing members positioned toward the side where the diameter thereof is expanded is brought close to the drive shaft while the position where the stirring wing members are pivotally fitted to the drive shaft functions as a pivot point, thereby reducing the diameter of the stirring wing members. When the drive shaft is moved downward relative to the drive part main body and the rod members pivotally fitted to the base-end side part of the stirring wing members are moved in the direction that is closer to the drive shaft, the outside end part of the stirring wing members positioned toward the side where the diameter thereof is expanded is brought apart from the drive shaft while the position where the stirring wing members are pivotally fitted to the drive shaft functions as a pivot point, thereby expanding the diameter of the stirring wing members. Moreover, the stirring wing members pivotally fitted on the drive shaft rotates along with the drive shaft by rotating the drive shaft by means of the driving means. |
