Toothpaste discharging toothbrush

Abstract

A toothpaste discharging toothbrush is disclosed. Provided is a toothpaste discharging toothbrush comprising: a hollow handgrip portion; a piston provided in the handgrip portion; a pumping device which is coupled to the rear of the handgrip portion and pushes the piston forward; an extended portion which is coupled to the front end of the handgrip portion and has therein a transfer path communicating with the handgrip portion; an implantation portion which is coupled to the end of the extended portion and has, formed therein, a discharge port communicating with the transfer path; toothbrush bristles coupled to the implantation portion; and a nipple coupled to the discharge port, the nipple comprising: a nipple body portion which has an open bottom and is hollow and made of a flexible material; an upper plate member made of a flexible material and positioned at the top of the nipple body portion so as to cover same; and a cut portion formed in the upper plate member, the pumping device comprising a pumping ball made of a flexible material, wherein the deformation pressure of the pumping ball is lower than the critical pressure at which the cut portion is opened by the pressure of toothpaste inside.

1 . A toothpaste discharging toothbrush comprising:
 a hollow handgrip portion;   a piston that is provided in the handgrip portion;   a pumping device that is coupled to the rear of the handgrip portion, and pushes the piston forward;   an extended portion that is coupled to a front end of the handgrip portion, and includes a transfer path which is communicatively connected to the handgrip portion;   an implantation portion that is coupled to an end of the extended portion, and is provided with a discharge port which is communicatively connected to the transfer path;   toothbrush bristles that are coupled to the implantation portion; and   a nipple that is coupled to the discharge port,   wherein the nipple includes:   a nipple body portion that includes an open bottom, is hollow inside, and is made of a flexible material;   an upper plate member that is positioned on an upper part of the nipple body portion, covers the upper part of the nipple body portion, and is made of a flexible material; and   a cut portion that is formed on the upper plate member,   wherein the pumping device includes a pumping ball that is made of a flexible material, and   wherein a deformation pressure of the pumping ball is less than a critical pressure at which the cut portion is opened by a pressure of toothpaste inside the toothbrush.   
     
     
         2 . The toothpaste discharging toothbrush according to  claim 1 ,
 wherein the upper plate member has a structure in which a central portion of a lower surface is convex downward, and   a thickness of a central portion of the upper plate member is greater than a thickness of a peripheral region thereof.   
     
     
         3 . The toothpaste discharging toothbrush according to  claim 2 ,
 wherein a protruding ring is formed in a peripheral region of an upper surface of the upper plate member.   
     
     
         4 . The toothpaste discharging toothbrush according to  claim 1 ,
 wherein a lower wall of the nipple body portion is thicker than an upper wall.   
     
     
         5 . The toothpaste discharging toothbrush according to  claim 4 ,
 wherein the front end of the handgrip portion is inserted into the extended portion,   a first protrusion ring, and a second protrusion ring that is positioned outside the first protrusion ring are formed at the extended portion,   a third protrusion ring, and a fourth protrusion ring that is positioned in front of the third protrusion ring are formed at the front end of the handgrip portion,   the first protrusion ring and the fourth protrusion ring are firmly coupled, and   the second protrusion ring and the third protrusion ring are loosely coupled.