Structure of water-jet toothbrush

Abstract

The present invention discloses an improved structure of a water-jet toothbrush, comprising a hollow base in the front part of the handle to receive and store the replaceable bristle head firmly, a hollow pipe being associated with the rear part of the handle, a source of water being connectable to the rear part of the pipe, a water controller be fixedly mounted to connect the handle and the pipe and to control the flowing of water toward the jet head at the anterior portion of the toothbrush head, a water passage being formed and extended axially from the pipe to the handle and curved inwards within the toothbrush head to connect with the spiral jet head, thereby such curvature direct a strong water stream to clean the residues stored on the tooth crevices and massage the gums effectively.

What is claimed is:  
     
         1 . A water-jet toothbrush comprising a replaceable bristle head, a spiral jet head at the anterior portion of the toothbrush head, a handle being extended to connect with a hollow pipe, which is connectable to a source of water at the rear end.  
     
     
         2 . The water-jet toothbrush of  claim 1 , wherein a hollow base at the front part of the handle is to receive and store a replaceable bristle head, an elastic plate is disposed at one, or both, end of the replaceable bristle head, a blocking bottom is projected from the elastic plate to fit the blocking hole at the lateral wall of the hollow base, so that the bristle head and the handle are clipped together to prevent a rotary movement.  
     
     
         3 . The water-jet toothbrush of  claim 1 , wherein a groove at the anterior end of the toothbrush head is covered with a jet head. Several discharge orifices are symmetrically allocated on the spiral jet head, an anti-leakage ring is mounted around the jet head and a C-shaped locating pin is clipped into the groove to fixedly fasten the jet head; a water passage is formed and extended axially from the pipe to the handle and curved inwards within the toothbrush head to connect with the spiral jet head, thereby such curvature direct a strong water stream to clean the teeth.  
     
     
         4 . The water-jet toothbrush of  claim 1 , wherein several drop-shaped channels are under the discharge orifices and are connectable with the water passage; the water stream from the water passage through the drop-shaped channels imparts an outward pressure to push the spiral jet head, causing the jet head to rotate and produce different water jets to massage the gums effectively.  
     
     
         5 . The water-jet toothbrush of  claim 1 , wherein a water controller  40  is fixedly mounted to connect the handle and the pipe, and to control the flowing of water toward the spiral jet head; a water passage with threads at the outer diameter being associated with the handle, a rear connector being fitted axially into the groove at the rear part of the front connector, an extended ring with threads at the outer diameter, being fixedly fastened with the screw hole of the pipe, a drop-shaped groove being associated with the water outlet in the pipe to form a contact area permitting water to pass in and out of; the contact area of the groove and the water passage is changed according to the adjustment of the water controller from the outer diameter, and therefore the flowing of the water is controlled.