Toothbrush

Abstract

A toothbrush is provided which comprises a brush head and a brush handle, and an insertion portion is disposed at a lower end of the brush head, an insertion hole mated with the insertion portion is disposed at an upper end of the brush handle, a first fitting ring is disposed on the insertion portion, and a second fitting ring for limiting in cooperation with the first fitting ring is disposed on an inner wall of the insertion hole; and a limiting mechanism for limiting the rotation of the brush head. Since the insertion portion and the insertion hole are mated and two fitting rings are adopted to cooperatively realize axial limitation in the present disclosure, there will be many advantages such as simple mold opening, ease of manufacturing and molding, no need of special core-pulling mechanism, simple structure, and low mold opening cost, ease of mold removal after product molding, high finished product rate, and low manufacturing cost compared with the prior art.

1 . A toothbrush, comprising: a brush head ( 1 ) and a brush handle ( 2 ), wherein an insertion portion ( 3 ) is disposed at a lower end of the brush head ( 1 ), and an insertion hole ( 4 ) mated with the insertion portion ( 3 ) is disposed at an upper end of the brush handle ( 2 );
 a first fitting ring ( 5 ) is disposed on the insertion portion ( 3 ), and a second fitting ring ( 6 ) for limiting in cooperation with the first fitting ring ( 5 ) is disposed on an inner wall of the insertion hole ( 4 ); it further comprises a limiting mechanism for limiting the rotation of the brush head ( 1 ).   
     
     
         2 . The toothbrush of  claim 1 , wherein the limiting mechanism comprises a limiting block ( 7 ) and a limiting groove ( 8 ) cooperating with the limiting block to limit; when the limiting block ( 7 ) is located on the brush head ( 1 ) or the brush handle ( 2 ), the limiting groove ( 8 ) is located on the brush handle ( 2 ) or the brush head ( 1 ). 
     
     
         3 . The toothbrush of  claim 2 , wherein the limiting block ( 7 ) is located at a transition position of the brush head and the insertion portion ( 3 ), and the limiting groove ( 8 ) is located on an inner wall of the insertion hole ( 4 ); the limiting groove ( 8 ) has an opening at an upper end surface of the brush handle ( 2 ) to facilitate inserting the limiting block ( 7 ) into the limiting groove ( 8 ). 
     
     
         4 . The toothbrush of  claim 1 , wherein a hand protector ( 9 ) is arranged between the brush head ( 1 ) and the brush handle ( 2 ) to block liquid flowing or dripping from the brush head ( 1 ). 
     
     
         5 . The toothbrush of  claim 1 , wherein the toothbrush further comprises a seat ( 10 ) for holding the brush handle ( 2 ). 
     
     
         6 . The toothbrush of  claim 5 , wherein an attraction mechanism attracting onto the seat ( 10 ) is disposed at a lower end of the brush handle ( 2 ). 
     
     
         7 . The toothbrush of  claim 5 , wherein the attraction mechanism is a magnetic attraction mechanism; when a magnet ( 11 ) is embedded at the lower end surface of the brush handle ( 2 ), a magnet ( 11 ) or a ferromagnetic body is arranged on the seat ( 10 ), and when a ferromagnetic body is embedded at the lower end surface of the brush handle ( 2 ), a magnet ( 11 ) is arranged on the seat ( 10 ). 
     
     
         8 . The toothbrush of  claim 7 , wherein the seat ( 10 ) is formed by a cladding layer ( 13 ) prepared with a flexible material and a core layer ( 14 ) prepared with a magnet ( 11 ) or ferromagnetic body, and the cladding layer ( 13 ) is covered on an outer surface of the core layer ( 14 ). 
     
     
         9 . The toothbrush of  claim 1 , wherein the insertion portion ( 3 ) has a length of 1-6 cm. 
     
     
         10 . The toothbrush of  claim 9 , wherein the insertion portion ( 3 ) has a length of 2-5 cm and the first fitting ring ( 5 ) is located at a position of the insertion portion ( 3 ) close to the brush head ( 1 ). 
     
     
         11 . The toothbrush of  claim 1 , wherein a wave-shaped anti-slip pattern is arranged on a peripheral surface of the brush handle ( 2 ). 
     
     
         12 . The toothbrush of  claim 1 , wherein anti-slip rings are arranged at an interval on the peripheral surface of the brush handle ( 2 ).