Quad-directional angle adjustment apparatus and quad-directional angle adjustment brush using same

Abstract

A quad-directional angle adjustment apparatus and a toothbrush using the same are provided. The quad-directional angle adjustment apparatus includes a toothbrush head unit having a C-shaped connection portion, which has an assembly opening, in one side of the head unit; and a toothbrush handle unit having a C-shaped connection portion, which has an assembly opening, in one side of the handle unit. The C-shaped connection portions provided in one side of the toothbrush head unit and the toothbrush handle unit have a convex connecting portion on an inner surface and a concave connecting portion on an outer surface.

1 . A quad-directional angle adjustment apparatus comprising:
 a head unit having a C-shaped connection portion, which has an assembly opening, in one side of the head unit; and   a handle unit having a C-shaped connection portion, which has an assembly opening, in one side of the handle unit,   wherein the C-shaped connection portions provided in one side of the head unit and the handle unit have a convex connecting portion on an inner surface and a concave connecting portion on an outer surface.   
     
     
         2 . A quad-directional angle adjustment toothbrush using the quad-directional angle adjustment apparatus as described in  claim 1 , comprising:
 a toothbrush head unit having a C-shaped connection portion, which has an assembly opening, in one side of the toothbrush head unit; and   a toothbrush handle unit having a C-shaped connection portion, which has an assembly opening, in one side of the toothbrush handle unit,   wherein the C-shaped connection portions provided in one side of the toothbrush head unit and the toothbrush handle unit have a convex connecting portion on an inner surface and a concave connecting portion on an outer surface.   
     
     
         3 . A quad-directional angle adjustment interdental brush using the quad-directional angle adjustment apparatus as described in  claim 1 , comprising:
 an interdental brush head unit having a C-shaped connection portion, which has an assembly opening, in one side of the interdental brush head unit; and   an interdental brush handle unit having a C-shaped connection portion, which has an assembly opening, in one side of the interdental brush handle unit,   wherein the C-shaped connection portions provided in one side of the interdental brush head unit and the interdental brush handle unit have a convex connecting portion on an inner surface and a concave connecting portion on an outer surface.