Toothbrush

Abstract

A toothbrush including a brush head, a brush neck, and a brush handle. The brush head has a plurality of bristles, and the brush neck extends from the brush head and includes a first intermediate section and a second intermediate section connected to the first intermediate section, and the brush handle extends from the first intermediate section of the brush neck. The first intermediate section forms a first angle with the brush handle; the second intermediate section connects to the first intermediate section to form a second angle; and the second intermediate section forms a third angle corresponding to the brush head.

What is claimed is: 
     
         1 . A toothbrush comprising:
 a brush head having a plurality of bristles;   a brush neck extending from the brush head and comprising a first intermediate section and a second intermediate section connected to the first intermediate section; and   a brush handle extending from the first intermediate section of the brush neck, wherein   the first intermediate section forms a first angle with the brush handle, and the first angle is in a range of 12 to 35 degrees in a top view; the second intermediate section connects with the first intermediate section to form a second angle, and the second angle is in a range of −35 to 45 degrees in a side view; and the brush head forms a third angle about an axis defined by the second intermediate section relative to a horizontal direction, and the third angle is in a range of 15 to 85 degrees, and   wherein, when a user grasps the brush handle for use, viewed from the brush head to the brush handle, the first intermediate section is formed by extending in a direction of lower left from a part connected with the brush handle to the brush head, and the second intermediate section is formed by extending in a direction of upper left from a part connected with the first intermediate section to the brush head, and the brush head is rotated in a clockwise direction from a part connected with the second intermediate section to a value not exceeding the third angle, to cause the bristles of the brush head to be directed slightly to the upper left.   
     
     
         2 . The toothbrush of  claim 1 , wherein between two ends of the second intermediate section which are close to and away from the first intermediate section is defined a height in a direction perpendicular to the first intermediate section, and the height is in a range of 4 to 15 mm. 
     
     
         3 . The toothbrush of  claim 1 , wherein the first intermediate section is approximately parallel to an arrangement of the third to seventh lower molars of the user.