Rotary toothbrush

Abstract

The present invention relates to a rotary toothbrush as an improvement for the conventional toothbrush. The rotary toothbrush includes a toothbrush bar having a grip part ( 1 ), a neck part ( 2 ) and a head part ( 3 ). At least of rotary toothbrush plates ( 4, 5 ) can be installed on head part ( 3 ) of the toothbrush bar to rotate around the center shaft thereof. A plurality of toothbrush furs ( 8 a, 8 b, 8 c, 8 d, 8 e ) which are arranged in regular group shapes are installed at several places on rotary toothbrush plates ( 4, 5 ). By varying plant-installation density, plant-installation height, or materials or strength of toothbrush firs (8), toothbrush furs ( 8 ) on rotary toothbrush plates ( 4, 5 ) generate a biased resistance between teeth upon brushing of teeth, and thus rotary toothbrush plates ( 4, 5 ) can be automatically rotated by generation of the biased resistance.

1 . A rotary toothbrush, comprising: 
 a longitudinal body including a head;    at least one rotary bristle bed set on said head of the body through a shaft such that the bristle bed is rotatable relative to the head around the shaft; and    a plurality of bristles implanted in the bristle bed such that the bristles generate different resistance forces against teeth in accordance with positions of the bristles on the teeth during a tooth brushing process.    
     
     
         2 . The rotary toothbrush according to  claim 1 , wherein two rotary bristle beds are set on said head of the body such that the two bristle beds are slightly spaced apart from each other and are independently rotatable relative to the head.  
     
     
         3 . The rotary toothbrush according to  claim 1  or  2 , wherein said bristles are implanted on the bristle bed such that the bristles are divided into two or more groups of bristles arranged on the bed at different portions, with bristle implanting densities of said groups of bristles being different from each other.  
     
     
         4 . The rotary toothbrush according to  claim 1  or  2 , wherein said bristles are implanted on the bristle bed such that the bristles are divided into two or more groups of bristles arranged on the bed at different portions, with bristle heights of said groups of bristles being different from each other.  
     
     
         5 . The rotary toothbrush according to  claim 1  or  2 , wherein said bristles are implanted on the bristle bed such that the bristles are divided into two or more groups of bristles arranged on the bed at different portions, with bristle strengths of said groups of bristles being different from each other.