FR2855727A1 - Toothbrush, has segments of mobile terminal part connected to segments of mobile initial part by inextensible and flexible filaments, where segments have two canals placed longitudinally opposite to each other - Google Patents

Abstract

The toothbrush has segments (1-6) that are assembled with one another in a movable manner on their rotation axes (7-12). The segments have a median part containing two canals (13,14) placed longitudinally opposite to each other on opposite sides of longitudinal axis. The segments (4-6) of a movable terminal part (C) are connected to segments (1-3) of a movable initial part (A) by inextensible and flexible filaments (15,16).

Description

-The invention relates to a toothbrush.

  The invention relates more precisely to a toothbrush The invention relates more precisely to a toothbrush comprising a head which is arranged at one end of a handle, of the type in which the head comprises a fixed part and a movable part, articulated 5 elastically around a transverse axis capable of pivoting in both directions.

  A toothbrush of this type is treated in invention n FR 2813170.

  At present, toothbrushes of the articulated head type do not allow effective brushing due to their passive articulation.

  The invention aims to improve the brushing felt by the user through active control of the movements of the mobile part.

  The present invention provides a toothbrush composed of movable parts (A) and (C), as well as a fixed part (B).

  Figure 1 is a side view showing a toothbrush according to the teachings of the invention in its rest state.

  Figure 2 is a top view of the toothbrush shown in Figure 1.

  figure part figure 25 part Figure 3 is a side view showing the toothbrush of 1, which shows part (A) in its maximum bending state and (C) in its maximum straightening state. Figure 4 is a side view showing the toothbrush of 1, which shows part (A) in its maximum straightening state and (C) in its maximum bending state.

  The toothbrush (ABC) shown in Figure 1 is composed * of an initial part (A), mobile, comprising the segments (1), (2) and (3) * of a fixed middle part (B) * a terminal part (C), mobile, comprising the segments (4), (5) and (6).

  The segments (1, 2, 3, 4, 5, 6) are flexibly assembled longitudinally to each other on their axes of rotation (7, 8, 9, 10, 11, 12).

  Figure 3 shows the toothbrush (ABC). Part (A) is folded to its maximum, in particular the segment (1) with respect to the segment (2), the segment (2) with respect to the segment (3), and the segment (3) with respect to the part (B).

  In Figure 4 we can see the toothbrush (ABC). Part (A) is straightened to its maximum, in particular the segment (1) relative to the segment (2), the segment (2) relative to the segment (3), and the segment (3) relative to the part (B).

  The channels (13) and (14), shown in Figures 1 to 4, retain an invariable internal diameter. The filaments (15) and (16) are shown in Figures 1 to 4 as having an equal and identical length.

  The movable end part (C), shown in FIGS. 3 and 4, is connected to the movable initial part (A) by means of the flexible and inextensible filaments (15) and (16), so that when the part (C) is folded or straightened, the movable part (A) is straightened or folded in a synchronized and symmetrical manner.

  The change of shape, or configuration, of the toothbrush in FIG. 1 is achieved by the application of a force exerted in the direction indicated by the arrow (Z), and in this case, the toothbrush ( ABC) takes the form defined in FIG. 3. Otherwise, when the force vector is oriented in the direction indicated by the arrow (V), as in FIG. (4), the toothbrush (ABC) takes the form defined in Figure 4.

  Between the shape of the toothbrush (ABC) in Figure 3 and that in Figure 4, there is an indeterminate number of intermediate shapes, one of which is shown in Figures 1 and 2.

  A relatively less effort of the fingers of the hand applied in the direction indicated by the force vector (Z) or (V) in FIG. 1, causes the change of shape of the toothbrush (ABC) defined in FIG. 3 or 4.

  This property is acquired thanks to the fact that the filaments (15) and (16) are arranged on the opposite sides of the longitudinal axis (X-X) as in FIG. 1.

  For example, in Figure 1, when the part (C) is folded in the direction indicated by the force vector (Z), the filament (16) proximal to the longitudinal axis (XX), can bend along a large circumference, in which case its circumference increases, and therefore undergoes greater tension. The opposite filament (15), distal to the longitudinal axis (X-X), can bend along a small circumference, in which case its circumference decreases, and therefore undergoes less tension. The intensity of the tension exerted on the non-extensible filaments (15) and (16), fixed at points (19) and (20), is transmitted to part (A), on which the filaments (15) and 25 (16) are fixed at points (17) and (18), which causes a deformation of the part (A), deformation which corresponds symmetrically opposite to the degree of deformation in the part (C).

  The tension exerted on the filaments makes it possible to regulate and remotely control the shape of the toothbrush (ABC), particularly with regard to part (A). This is to allow better brushing of the teeth. The material used for the manufacture of the toothbrush segments can be either rigid plastic or metal.

Claims (6)

  I Toothbrush comprising a fixed part and a movable part, characterized in that more than three segments (1, 2, 3 4, 5, 6) are assembled 5 to each other in a mobile manner on their axes of rotation (7 , 8, 9, 10, 11, 12) 2. Toothbrush according to claim 1, characterized in that the middle part (B), as well as the segments (1, 2, 3, 4, 5, 6), contain channels (13) and (14) arranged longitudinally opposite one another, on the 10 opposite sides of the longitudinal axis (XX).   3. Toothbrush according to Revyendication 1, characterized in that the movable end part (C) is connected to the movable initial part (A) thanks to the flexible and inextensible filaments (15) and (16).   4. Toothbrush according to claim 1, characterized in that the filaments (15) and (16) are arranged on the opposite sides of the longitudinal axis (X-X).   5. Toothbrush according to claim 1, characterized in that the shape that the movable initial part takes (A) is always in synchronized manner symmetrically opposite to the shape that takes the movable terminal part (C).   6. Toothbrush according to claim 1, characterized in that the shape of the mobile part (A) can be actively controlled remotely, by means of a manual control of the movements of the mobile part (C).