Electric toothbrush handpiece and electric toothbrush comprising the electric toothbrush handpiece and a brush attachment

Abstract

An electric toothbrush handpiece having at least one interface for coupling to a brush attachment, at least one housing, at least one drive unit for driving the interface, which is received in the housing, and at least one energy store for supplying energy to the drive unit. The electric toothbrush handpiece includes at least one fix frame unit which is arranged in the housing and which is implemented as a single piece and which at least partially receives the drive unit and the energy store, wherein the frame unit forms multiple receptacle regions at least for the drive unit and the energy store, which receptacle regions are positioned in a defined manner relative to one another in particular both in an assembled state and in an unassembled state of the frame unit, wherein the frame unit extends axially over the entire drive unit and the entire energy store.

1 . An electric toothbrush handpiece having at least one interface for coupling to a brush attachment, having at least one housing, having at least one drive unit for driving the interface, which is received in the housing, and having at least one energy store for supplying energy to the drive unit,
 characterized by at least one fix frame unit which is arranged in the housing and which is implemented as a single piece and which at least partially receives the drive unit and the energy store, wherein the frame unit forms multiple receptacle regions at least for the drive unit and the energy store, which receptacle regions are positioned in a defined manner relative to one another in particular both in an assembled state and in an unassembled state of the frame unit, wherein the frame unit extends axially over the entire drive unit and the entire energy store.   
     
     
         2 . The electric toothbrush handpiece as claimed in  claim 1 ,
 characterized by at least one charging coil for charging the energy store which at least one charging coil is received in the fix frame unit.   
     
     
         3 . The electric toothbrush handpiece as claimed in  claim 2 ,
 characterized by a compressible length compensation element for the length compensation for the compensation of tolerances, which is fitted between charging coil and frame unit.   
     
     
         4 . The electric toothbrush handpiece as claimed in  claim 2 ,
 characterized by a separate frame unit of the charging coil, which is installed on the frame unit, wherein the frame unit of the charging coil carries within it the charging coil and also a compensation element, which is pressed by the charging coil against the energy store.   
     
     
         5 . The electric toothbrush handpiece as claimed in  claim 2 ,
 characterized in that the separate frame unit of the charging coil is installed on the frame unit by a plugging-on process.   
     
     
         6 . The electric toothbrush handpiece as claimed in  claim 1 ,
 characterized by a circuit board for control of the drive unit, which circuit board is at least partially received in positively locking fashion by the frame unit and extends at least over a large part of an axial extent of the frame unit.   
     
     
         7 . The electric toothbrush handpiece as claimed in  claim 6 ,
 characterized in that, to receive the circuit board in positively locking fashion, the frame unit has at least two hook-shaped positive-locking elements, which are configured for partially engaging over the circuit board in an installed state.   
     
     
         8 . The electric toothbrush handpiece as claimed in  claim 7 ,
 characterized in that, for an installation process, the circuit board particularly has, on an outer edge, recesses which correspond to the positive-locking elements and via which the circuit board can, for installation thereof, be moved past the positive-locking elements into an end position.   
     
     
         9 . The electric toothbrush handpiece as claimed in  claim 1 ,
 characterized in that the energy store is clamped radially by lateral holding arms of the frame unit.   
     
     
         10 . The electric toothbrush handpiece as claimed in  claim 1 ,
 characterized by at least one rotor cover which is connected fixedly to the frame unit and which, together with the frame unit, is configured for a support and/or fixing of a rotor of the drive unit.   
     
     
         11 . The electric toothbrush handpiece as claimed in  claim 10 ,
 characterized in that the rotor cover is screwed to the frame unit.   
     
     
         12 . The electric toothbrush handpiece as claimed in  claim 10 ,
 characterized in that the rotor is mounted between the frame unit and the rotor cover.   
     
     
         13 . The electric toothbrush handpiece as claimed in  claim 10 ,
 characterized by a covering cap which is configured for being pushed over a spindle-side end of the rotor cover and of the frame unit, wherein, in an assembled state, the covering cap engages around in each case the spindle-side end of the rotor cover and of the frame unit.   
     
     
         14 . The electric toothbrush handpiece as claimed in  claim 13 ,
 characterized in that the interface comprises a spindle, wherein the covering cap serves for spindle guidance of the spindle of the interface, wherein, for this purpose, the spindle is guided through the covering cap.   
     
     
         15 . The electric toothbrush handpiece as claimed in  claim 13 ,
 characterized in that the covering cap serves for sealing off a housing interior with respect to the interface.   
     
     
         16 . A method for producing the electric toothbrush handpiece as claimed in  claim 1 . 
     
     
         17 . The method as claimed in  claim 16 ,
 characterized in that, during a process of assembly of the electric toothbrush handpiece, in a first step, all of the internal parts are installed via the frame unit and are subsequently, in a second step, pressed into the housing.   
     
     
         18 . An electric toothbrush having an electric toothbrush handpiece as claimed in  claim 1  and having a brush attachment.