FR2622089A1 - Mechanised toothbrush with manual control - Google Patents

Abstract

According to one characteristic, the brush head comprises at least one group of two round brushes 2 mounted on spindle, balls and rings 3b-4f-6d-7e, so as to render them integral with the gripping handle and to be driven in a rotary movement. The invention applies to effective brushing of the teeth.

Description

The invention relates to a mechanized control toothbrush.
manual, of the type comprising at least two groups of
brush with circular motion.

It is advisable, before approaching the main provisions c
the invention, to recall the difficulties encountered on the occasion
research of the mechanization of one or more gro
toothbrush head brush bristles.

In a first generation of di toothbrush heads
your statics, i.e. animated only manually, we
sought to improve brushing by different types of im
planting of hairs on the brush head and also in re
looking for ergonomic shapes of the grip handle.

Whatever the proposed embodiments, the bros
wise "vertical" as taught by the medical profession is always
days also difficult to obtain.

In a second generation, we tried to combine soft
brush entry movement for additional movements
to facilitate "vertical" brushing. We have therefore proposed
brush heads animated by a motorcycle drive movement
laughed. In this case, the amplitude of the vertical movements n is
not mastered, which for a clumsy person risks
cause harmful accidents.

In a third generation, we control the movements
vertical amplitude limited by a mechanism, the most sovereign
electrically operated, which animates the brush bristles of a soft
alternative clothing perpendicular to the axis of the grip handle
of the brush.

Such "electric" brushes are of a manufacturing cost
tion due to the number of mechanical components and th
miniaturized electrics. In addition, a rigorous movement
perpendicular to the axis of the handle is not medical
mentally the best; specialists, especially odon
tology, prefer precision micro-movements
say falling within a circle.

J The present invention therefore aims at a brush
with a new type of tooth which eliminates the disadvantages precl-
tees and which, without electro-mechanical mechanism, allows to animate
at least two groups of hairs in a rotational movement.

The invention also aims to provide a brush for
simple, low-cost, particularly efficient manufacturing
and responding as much as possible to the early brushing movement
approved by specialists.

The invention also aims at a new conception of May
brush head which moves the hand away from the mouth for a better
their mastery of the combined movements of the brush.

To this end, the invention relates to a mechanical toothbrush.
manually operated, characterized in that the head
brush includes at least one group of two cinematic brushes
only integral with said head by axes, so
the that under the action of a manual control movement alte
native in the axis of the handle, these two round brushes are a
nimated with a rotational movement.

According to one characteristic, the invention relates to this ef
fet a brush head where move two round brushes which
move on their inclined axis.

According to one characteristic, the invention of this head
brush allows in its function not to change anything to the movement
the brush in the axis of the handle and get a
rational cleaning of all teeth by movement
circular of the two brushes which alternate their rotation with cha
that displacement of the handle; we will find in this rota scan
tif the result sought by the medical profession and particularly
dentists.

O Other features of the invention will be highlighted
evidence during the description of the device, characterized
in that it is produced according to the appended figures.

 Figure 1 is a view of the two brushes.

 Figure 2 is a view of the brush pivots on the head.

Figure 3 is a top view of the head with a brush
asked.

 Figure 4 is a view of the inclination of the pivot axes.

According to one embodiment, the brush is characterized
by a handle of injected plastic (5-la), the so-called head (la)
receives two axes (3b) integral with the handle where lo
manage the small brushes (5c) resting on the balls (6d) and
mounted on self-lubricating bank (7th) trapped on
axes by an intermediate ring (4f) which has become integral with the a after assembly. Said brushes thus positioned8 are operational and can rotate very freely.

 This invention also aims at a flat handle adhering perfectly to the hand and making any tilting of the brush improbable, so that by this grasping, greater freedom of flexibility and manageability is obtained. The grip handle (5) is bent so that the grip portion is substantially set back from the plane of the brush bristles.

Claims (4)

 rotational movement in contact with the dental relief.  in the axis of the handle the two brushes are animated with a  in such a way that under the action of an alternating movement  (2) incorporated into small brushes mounted on an inclined plane,  the brush head (1) comprises at least one group of bristles  Manually operated toothbrush characterized in  2. Brush according to claim 1 characterized in that e:  includes at least two independent rotary brushes (5c)  are one of the other, theoretically turning one  on the other by their relative inclination (4).  3. Brush according to claims 1 and 2 characterized in  the two rotary brushes (5c) are placed on balls  (6d) at the head and friction rings (7e) at the base their donnan  great freedom of rotation.  4. Brush according to any one of claims l to 3  characterized in that the grip handle (5) is against  angled so that the gripping portion is sensibly set back from the plane of the brush bristles.