A water toothbrush comprises:
- a body housing 100 extended in one direction and having an inner hole formed along its longitudinal central axis;
- a water supply pipe 200 whose one side in its longitudinal direction is combined with a water supply hose and whose other side in its longitudinal direction is inserted into one side of the body housing 100 in the longitudinal direction thereof and which has a first sliding bump 210 protruding on a part, out of its outer circumferential surface, inserted into the body housing 100;
- a drawing pipe 300 whose one side in its longitudinal direction is inserted into the other side of the body housing 100 in the longitudinal direction thereof and which has a second sliding bump 310 protruding on a part, out of its outer circumferential surface, inserted into the body housing 100;
- a toothbrush body 400, connecting to the other side of the drawing pipe 300 in the longitudinal direction thereof, which has a head 410 planted with bristles 412, has an emitting hole 420 formed on a surface, out of the head 410, where the bristles 412 are planted, and has an emitting flow channel 430 for linking the drawing pipe 300 and the emitting hole 420;
- a flow channel assembly 500 fixedly installed in the inner hole of the body housing 100 and connecting the other side of the water supply pipe 200 in the longitudinal direction thereof with one side of the drawing pipe 300 in the longitudinal direction thereof, for guiding cleaning water supplied by the water supply pipe 200 into the drawing pipe 300;
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- wherein the body housing has respectively a first sliding groove 110 and a second sliding groove 120 which are formed in both sides of the inner wall of the body housing 100 in the longitudinal direction thereof, and inclinedly arranged in a direction crossing to the circumferential direction of the body housing 100,
- wherein the first sliding bump 210 and the second sliding bump 310 are configured to be mounted respectively into the first sliding groove 110 and the second sliding groove 120 when the other side of the water supply pipe 200 in the longitudinal direction thereof and one side of the drawing pipe 300 in the longitudinal direction thereof are inserted into the body housing 100, such that the water supply pipe 200 and the drawing pipe 300 may be combined with and detached from the flow channel assembly 500 according to the direction of their rotation.