Electric toothbrush with excellent vibration efficiency

摘要

The present disclosure relates to an electric toothbrush, and more particularly, to an electric toothbrush, which has excellent vibration efficiency since vibrations of the vibration motor are directly transferred to the bristle holder, saves the battery power, reduces a size of the toothbrush, decreases the thickness of the head portion, allows the vibration motor to be stably fixed in a fixing groove formed at the upper surface of the head portion, and reduces noise.

主权项

1. An electric toothbrush comprising:
a head portion including:
a bristle holder having a plurality of holes;bristles respectively inserted into the holes so that lower ends of the bristles protrude below the bristle holder, the lower ends of the bristles being thermally bonded to a lower surface of the bristle holder;a head plate installed to a lower side of the bristle holder;a fixing groove formed in an upper surface of the head plate; anda vibration motor installed in the fixing groove in a manner that a lower portion of the vibration motor is fit into the fixing groove; and a grip coupled to the head portion, wherein the fixing groove has a shape corresponding to the lower portion of the vibration motor so that the lower portion of the vibration motor is fit therein, and wherein, in the case the bristle holder is coupled to the head plate, an upper surface of the vibration motor comes into contact with a lower surface of the bristle holder.