A dental floss holder with improved structure, comprising:
- a main body, being a case of an opening opened downwardly, including an assembly portion assembled and communicating with a supply portion, said assembly portion having an axial hole on a top face thereof opposite to said opening, and a gap defined on one side of said assembly portion, a bottom case covering said opening and defining at least one guiding groove thereon with respect to said assembly portion, said supply portion adapted for accommodating a spool of dental floss;
- a connecting arm being hollow interiorly and having two ends, one end connected to one side of said main body with respect to said gap, and the other end having a position member, a block bar disposed on said connecting arm;
- a restraining apparatus rotatably mounted on said assembly portion, including:
- a spinning wheel having an aperture corresponding to said axial hole, and a meshing wheel formed therebeneath;
- a hollow post pivotally inserted through said aperture and said axial hole;
- a retrieving member disposed on said spinning wheel and having a retrieving wheel, said retrieving wheel forming a pair of clips thereon, said clips protruding upward to form a space from said retrieving wheel;
- a hollow shaft portion rotatably mounted to said hollow post in said assembly portion, said hollow shaft portion attached by a spool and forming a plurality of zigzag grooves therebeneath;
- a releasing apparatus disposed under said hollow shaft portion, comprising:
- a releasing bar assembled in said assembly portion and having a mounting part mounted on said bottom case, and a free end being inclined upwardly and forming a protrusion, the protrusion being engageable with said zigzag grooves;
- a driven member disposed above said releasing bar, a part of said driven member protruding outwardly to be able to prop against said releasing bar;
- a rotation wheel having at least a linking rod for connecting said driven member;
- and
- a clean portion having a pair of U-shaped fork arms and an insertion stem extending rearward from the fork arms, the insertion stem having an insertion end for insertion with said position member of said connecting arm;
- wherein the floss is drawn out of said gap of said assembly portion to surround along said connecting arm and said fork arms and is then retracted in and tighten by said clips of said retrieving member;
- while in use, the protrusion of the releasing bar is in engagement with said zigzag grooves of the hollow shaft portion and which enables to clean teeth;
- while the protrusion disengages from said zigzag grooves, the floss is free to be drawn.