Toothbrush

Just a new concept of a TOOTHBRUSH for changeable TOOTHBRUSH HEADS. The TOOTHBRUSH HEAD is fastened by screwing to the TOOTHBRUSH HANDLE. One TOOTHBRUSH HANDLE usable for a longer time - could be made of different non-plastic materials, according to the wishes of customers. Using bamboo is a new trend. TOOTHBRUSH HEADS, with different hardnesses of the bristles, changeable from time to time, save money, reduce plastic material and is environmentally friendly. I don't know, whether this (new) design concept already exists on the world wide market. Other fastening concepts, where the TOOTHBRUSH HEAD is clipped into place of the TOOTHBRUSH HANDLE and a pluggable version have been already implemented by different companies. My screwable version is much more difficult for fastening, but it seems to offers more safety for a unintentional loosening and a backlash-free connection. My design of the TOOTHBRUSH HANDLE is rather very simple, but it could be the base for new ideas and creations by you. The fastening of the bristle bundles is state of the art, shown in some different pictures. Notes: Threads: M6 (x1), modeled with theoretical values Materials of the components (proposals only): CAP NUT: Polypropylene or Polycarbonate ADAPTER PIECE (pressed into TOOTHBRUSH HANDLE): Aluminium TOOTHBRUSH HEAD: Plastic (ABS, PC, PP or Acrylic Glass) BRISTLES: Nylon BRISTLE FASTENING PLATELETS (pressed with BRISTLE BUNDLES into TOOTHBRUSH HEAD): Brass The complete assembly is available as a STEP file (.stp) only. Most of the components are available as STL files (.stl) additional. Thanks for your attention!