WO2014032791A2

WO2014032791A2 - Brush with channels and protector

Info

Publication number: WO2014032791A2
Application number: PCT/EP2013/002569
Authority: WO
Inventors: Sandi Cesko; Branko Culig
Original assignee: Tinita Sarl
Priority date: 2012-08-28
Filing date: 2013-08-26
Publication date: 2014-03-06
Also published as: DE102012017006A1; WO2014032791A3

Abstract

A brushing device (1) for personal hygiene includes a bristle base (3) and bristles (4) arranged on the bristle base (3). The bristle base (3) includes a plurality of channels (5a, 5b, 5c) leading through the bristle base (3).

Description

Brush with Channels and Protector

An embodiment of the invention relates to a brushing device for personal hygiene, e.g. a tooth brush for cleaning teeth by manual and/ or electrical movement in contact with the teeth, or a hair brush. BACKGROUND

The use of brushes for e.g. brushing hair and cleaning teeth is known since more than 1000 years. A crucial point for personal hygiene when using a brush, e.g. a tooth brush or hair brush, is to keep the brush clean and tidy and to protect the bristles from dirt and deterioration through exterior impact.

It is an object of the invention to provide a brushing device that allows keeping the brush in good and hygienic order. This object is solved by a brushing device according to independent claim 1. Further developments are described in the dependent claims.

A brushing device for personal hygiene includes a bristle base and bristles arranged on the bristle base, wherein the bristle base includes a plurality of channels leading through the bristle base. Further, the brushing device may include a grip coupled to or adapted to be coupled to the bristle base.

The brushing device may be adapted for brushing hair, nails or alternatively for brushing teeth and/or cleaning other parts of the mouth, e.g. the tongue, while establishing personal or oral hygiene.

The grip may be adapted to handle the brushing device during brushing, e.g. to hold the brush in a hand during application to the teeth or the hair. The grip may be rod shaped or shaped in any other form allowing holding the brushing device.

The bristle base may have any shape. For example, the bristle base may include a first side and a second side, which first and second side may be located opposite to each other. Each of first and second sides may include an essentially flat surface, the surfaces being essentially parallel to each other. At the second side, the bristles may be disposed, e.g. distributed upon the flat surface. The first side may be adapted for cleaning other parts of the mouth, e.g. a tongue. For example, riffles formed of rubber, plastic and/or another material may be provided at the first side.

The bristle base may be coupled with the grip e.g. in a stiff or flexible manner. The coupling may include any sort of coupling mechanism.

The grip and/or the coupling mechanism may include an electrically driven actuator for driving the bristle base to perform a brushing movement. Thus, the brushing device may be of the type of a manual or an electrically driven tooth brush.

The bristles may be formed of any kind of material, such as a synthetic resin, and/or may include natural bristles. They may be arranged on the bristle base to form a brush. For example, the bristles may extend to several sides, or may all be placed on the second side of the bristle base. The bristles may be fixed to the bristle base by any kind of fixing mechanism, e.g. by fusion-bonding. Further, the bristles may be grouped into bundles fixed to the bristle base.

The channels leading through the bristle base may form a perforation of the bristle base. For example, at least one of the channels may lead straightly, i.e. directly from the first side to the second side of the bristle base located e.g. opposite to the first side. In this case, the channels form holes extending through or perforating the bristle base. Further, the channels may lead through the bristle base in any other manner, e.g. leading from a distal end to which the grip is (to be) attached to the second side where the bristles are disposed, thereby forming any kinds of bends or curves.

The channels allow a cleaning fluid such as water to penetrate through the channels and to stream along the bristles while wetting the bristle base. Thus, an easy cleaning of the brushing device and in particular of the bristle base and the bristles is achieved. After cleaning, the water may easily drain off from the bristles and the bristle base, e.g. by dripping through the channels. Further, fresh air may penetrate through the channels (holes) and may dry parts of the bristle base which otherwise would stay wet during a long time. Thus, the brushing device may be efficiently cleaned and rapidly dried, which helps keeping it in a hygienic condition. This is particularly useful for tooth brushes, which are often wetted and water-cleaned. In an embodiment, each of the plurality of channels is adapted to lead a fluid through the bristle base. Thus, water for cleaning and air for drying may easily penetrate through the channels provided in the bristle base, such that the bristle base may easily be cleaned and dried. Further, a special cleaning fluid e.g. adapted to inhibit growth of bacteria may be led to through the channels for cleaning the brushing device, e.g. toothbrush or hairbrush.

In an embodiment, at least one of the channels has an opening located between the bristles and/or between bundles formed by bristles. For example, the channels or holes may be arranged between two neighboring or adjacent bristles or bundles, for example one hole between any two neighboring bundles. Thus, an efficient cleaning and drying of bristles and/or bundles neighboring the at least one of the channels may be achieved. In a further embodiment, the at least one of the channels has a further opening. The opening may be adapted to be attached to an outlet of the water tap. For example, the further opening may form an inlet for water and/ or cleaning fluid to be led through the channel, while the opening forms an outlet leading the water and/or cleaning fluid to the bristle base and to the bristles arranged thereon. Thus, by the respective further openings, the channels may be easily coupled to a water tap or to an outlet of bottle including cleaning fluid, allowing an easy through-flow of cleaning fluid and permitting an easy and efficient cleaning of the brushing device. In a further embodiment, the channels extend linearly from the bristle base from the first side of the bristle base to a second side of the bristle base, wherein the first side is located opposite the second side, and wherein at the second side the bristles are disposed. Thus, the water and/or cleaning fluid may be directly led through the bristle base to the bristles, e.g. with a certain speed and/or pressure ensuring efficient purification.

A further embodiment includes an attachment member adapted to be removably attached to the bristle base, wherein the attachment member is adapted to match with the bristle base and includes a surrounding wall forming a chamber with the bristle base.

The attachment member may be provided as a separate part or accessory of the brushing device, e.g. tooth brushing device. It may for example be taken off the brushing device during brushing, and may be attached to the bristle base when the brushing device is to be cleaned, dried or stored.

The attachment member may be formed of an elastic material such as a rubber, a plastic or a synthetic resin. The attachment may be achieved e.g. by fixing members fixing the attachment member to the bristle base, e.g. to different sides of the bristle base. For this purpose, the fixing members may be disposed at the attachment member, the bristle base and/or the grip. Attachment may be reached by forming an undercut and support structure. For example, flexible clips, tongues, flaps or links may be disposed at the attachment member, which form an undercut with the bristle base and/or grip when the attachment member is attached to the bristle base.

To match with the bristle base, the attachment member may include a flexible rim surrounding the bristle base when the attachment member is attached. Thus, the chamber formed by the bristle base and the surrounding wall is substantially sealed at the abutment of the surrounding wall to the bristle base. Thereby, a dense matching may be possible. When the attachment member is attached to the brushing device, the bristle base and the bristles arranged thereon may be protected by the attachment member, e.g. against deterioration by external impact. Further, due to the holes perforating the bristle base, water for cleaning and air for drying may still reach the bristles. This may be helpful for keeping e.g. the toothbrush in clean and hygienic condition when transported in a toilet bag.

In a further embodiment, the attachment member includes a recess opening to the chamber. The recess may be adapted to be coupled with or attached to an outlet of a water tap.

The recess may be coupled loosely to the outlet of the water tap, e.g. when a water jet from the water tap is poured into the chamber through the recess. The recess may also be directly or tightly coupled to the outlet of the water tap, e.g. when it is directly attached to the water tap. For example, the recess may have a circular shape fitting to conventional outlets of water taps or aerators.

The recess allows penetration of a fluid to the bristle base and the bristles of the brushing device. For example, the brushing device may be cleaned with water or cleaning fluid or may be air-dried even when the attachment member is attached. Further, the recess (opening) allows filling the chamber with water or cleaning fluid through the opening. The water or cleaning fluid may then leak through the channels from the chamber, thereby allowing an effective cleaning of the bristles and the bristle base. The attachment member thus forms a nozzle for cleaning the brushing device, e.g. toothbrush, directly from the water tap.

In an embodiment, the attachment member may be adapted to be attached to the first side of the bristle base. In this embodiment, the cleaning fluid from the chamber may penetrate through the channels leading through or perforating the bristle base and may flow along the bristles or bundles of bristles, thereby effectively removing toothpaste, dirt, hairs and leftovers from the holes, from the second side of the bristle base and from the bristles or bundles of bristles. Thus, an efficient cleaning of the brushing device becomes possible.

In a further embodiment, the surrounding wall is adapted to surround the bristles when the attachment member is attached to the second side of the bristle base, i.e. the side at which the bristles are disposed.

For example, this surrounding wall may have a height corresponding to or exceeding the length of the bristles. Thus, the bristles may be effectively protected, e.g. when the (tooth or hair) brushing device is stored in a toilet bag. The attachment member may also be shaped such that it matches conventional toothbrushes and may be offered separately, e.g. for retrofitting conventional toothbrushes. Thus, when using the attachment member as a retrofitting device, protection of the bristles and air drying while the bristles are protected is possible. To achieve an efficient cleaning, a further hole for letting out a cleaning fluid poured in via the opening may be provided, e.g. in the surrounding wall. Thus, a retrofitting attachment member may also be used for cleaning a conventional tooth brush without holes in the bristle base.

In a further embodiment, an insertion member is provided, the insertion member having at least one pin, the pin being insertable into one of the plurality of channels.

The insertion member may be provided as a separate part or accessory of the brushing device. It may for example be taken off the brushing device during brushing, and may be attached as described in the following to the bristle base when the brushing device is to be cleaned, dried or stored. Further, the insertion member may also form part of the brushing device, a punchy point since being coupled with the grip. Is The insertion member may be formed of an elastic material such as a rubber, a plastic or a synthetic resin.

The insertion member with the at least one pin allows cleaning the channels, in which leftovers, hairs and pieces of dried toothpaste or food could be stuck. By inserting the pin into a channel, an effective mechanical cleaning of the channel (or hole formed by the channel) is possible, extruding any leftovers stuck in the channel. If the pin has a sufficient length for penetrating through the channel or hole e.g. from the first side to the second side and for protruding on the second side, the root part of bristles and/or the bundles disposed at the second side may also be cleaned mechanically by means of the pin. This further supports the cleaning of the brushing device, e.g. tooth or hair brush) .

In a further embodiment, the pin is adapted to fit to an interior of the one of the plurality of channels. It may, for example, have an abradant surface. For example, a cross-sectional profile of the pin may correspond to a cross-sectional profile of the channels. Thus, when the pin penetrates one of the channels, any leftovers are mechanically extruded from the channel. The surface may be configured such that the extrusion is supported. For example, the surface may be covered by or the pin may be formed of rubber. Further, a riffled structure of the surface may support the cleaning.

In an embodiment, the one of the plurality of channels is formed by a hole perforating the bristle base. When the pin is inserted into the one of the channels, the pin extends through the hole. Thus, an easy insertion/attachment of the insertion member to the bristle base is achieved.

In a further embodiment, a plurality of pins is arranged at the insertion member such that for each of the plurality of channels (or holes), a corresponding pin is provided, and such that into each of the plurality of channels, the corresponding pin is insertable. In particular, the pins may be insertable into the corresponding channels at the same time, i.e. when the insertion member is fixed at the bristle base. This further facilitates and fastens the cleaning.

In a further embodiment, the insertion member includes a suspending part. The suspending part may for example be integrally formed with the insertion member, and may be formed of the same material. This allows an integral product design and a simple manufacturing. The suspending part may include a ring-shaped loop, a clip, a hanger and/or a hook which is adapted to suspend or place the insertion member at a wall. When the insertion member is inserted into the brushing device, this allows suspending the brushing device, e.g. tooth, nail or hair brush, at the wall. Thus, an efficient and safe storing and aerating of the brushing device is possible.

As disclosed in the above, the brushing device may be or include a toothbrush, a hairbrush or a nail brush.

Further details of the invention will become apparent from the consideration of the accompanying drawings and the ensuing description. BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

The drawings are included to provide a further understanding of embodiments and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments and together with the description serve to explain principles of embodiments. Other embodiments and many of the intended advantages of embodiments will be readily appreciated as they become better understood by reference of the following detailed description. The elements of the drawings not necessarily scale relative to each other. Like reference numerals designate corresponding similar parts.

Fig. 1 illustrates an embodiment of a brushing device, i.e. a tooth brush having holes perforating a bristle base, in a perspective view.

Fig. 2 illustrates the embodiment of Fig. 1 in a sectional side view.

Fig. 3 illustrates an embodiment of an attachment member in a perspective view.

Fig. 4 illustrates the attachment member of Fig. 3 when attached to the tooth brush of Fig. 1.

Fig. 5 illustrates the embodiment of Fig. 4 in a sectional side view. illustrates the embodiment of Fig. 5 when coupled to an outlet of a water tap. illustrates, in a perspective view, the attachment member of Fig. 3 when attached to the toothbrush of Fig. 1 at a side of the bristle base at which the bristles are disposed. illustrates the embodiment of Fig. 7 in a sectional side view. illustrates the embodiment of Fig. 8 when attached to an outlet of a water tap. illustrates an embodiment of an insertion member in a perspective view. illustrates the insertion member of Fig. 10 when attached to the toothbrush of Fig. 1 in a sectional side view. illustrates the embodiment of Fig. 1 1 in perspective view. illustrates an embodiment of a hairbrush in a perspective view from a front and a rear side. illustrates the embodiment of Fig. 13 with detached bristle base seen from the front side. illustrates the embodiment of Fig. 14 seen from the rear side. illustrates the embodiment of Fig. 13 in a sectional front and side view. illustrates the embodiment of Fig. 16 with detached grip in a sectional side view. illustrates an embodiment of a toothbrush seen from a front and rear side, in which toothbrush channels leading through the grip and the bristle base can be directly coupled with an outlet of a water tap. Fig. 19 illustrates the embodiment of Fig. 18 with detached housing in a perspective view from the front side.

Fig. 20 illustrates the embodiment of Fig. 19 in a perspective view from the rear side.

Fig. 21 illustrates the embodiment of Fig. 18 in a sectional side view when attached to a water tap.

DETAILED DESCRIPTION

In the following, embodiments of the invention are described. It is important to note that all described embodiments may be combined in any way, i.e. there is no limitation that certain described embodiments may not be combined with others.

Fig. 1 illustrates a toothbrush 1 including a rod-shaped grip 2 for manual application. At one end of grip 2, a bristle base 3 is arranged. Bristle base 3 has a first side and a second side located opposite to the first side. The first and second sides may be essentially flat, and at the second side, bristles 4 arranged in bundles 4a, 4b, 4c may be disposed. In the embodiment, channels formed by holes 5a, 5b, 5c are provided, the holes 5a, 5b, 5c penetrating bristle base 3 in a direction essential perpendicular to a surface of the first and/or second side. The holes 5a, 5b, 5c are provided at various positions of bristle base 3, i.e. of the first and/or second side of bristle base 3, leading through and thereby forming channels through bristle base 3, as may be seen from Fig. 2.

In Fig. 2, the embodiment of Fig. 1 is illustrated in a sectional side view. The holes 5a, 5b, 5c lead through and thereby form channels through bristle base 3. Thus, a cleaning liquid such as water or a disinfecting liquid may easily pass through these channels and may flow along bristles 4 and bundles 4a, 4b, 4c. Thus, bristles 4 and bristle base 3 may efficiently be cleaned. Since also the air may pass through holes 5a, 5b, 5c, bristles 4 and bristle base 3 may also be efficiently dried after use, which prevents growth of bacteria. As may further be seen from Fig. 2, a hole 5b may end between root parts of neighboring bundles 4b, 4c, thus allowing an efficient cleaning of the root parts.

In Fig. 3, an attachment member 6 adapted to be removably attached to toothbrush 1 of Fig. 1 is illustrated. For attaching attachment member 6, elastic fixing members 7a, 7b are disposed, allowing forming an undercut with grip 2 when attached to toothbrush 1. Further, a surrounding wall 8 with a recess 9 is provided. As illustrated in Fig. 4, surrounding wall 8 forms a chamber 6a with bristle base 3 when attachment member 6 is attached to toothbrush 1. Recess 9 provides an opening to chamber 6a.

The chamber 6a formed by bristle base 3 and the surrounding wall 8 is also shown in a sectional side view in Fig. 5. Further, another fixing member 7c is shown to form an undercut with bristle base 3. Supporting members 7d and 7e support attachment member 6 on bristle base 3.

As shown in Fig. 6, the assembly of Fig. 5 may be coupled with an outlet of a water tap 10 for example by joining recess 9 with an aerator 1 1 of water tap 10. Thus, water may be inserted into the chamber 6a with a certain pressure and may penetrate through or may be pressed through the channels formed by holes 5a, 5b, 5c. The water thus flows along bundles 4a, 4b, 4c, thereby cleaning bristles 4 from the root part to the tip. This allows an efficient cleaning with water or likewise with another cleaning or disinfecting fluid.

In Fig. 7, a perspective view shows attachment member 6 when attached to toothbrush 1 at the second side of bristle base 3, i.e. the side at which bristles 4 are arranged. This assembly allows safely storing toothbrush 1 while bristles 4 are surrounded and protected by attachment member 6. During storing, air may pass through recess 9 and holes 5a, 5b, 5c, allowing to dry toothbrush 1 and to prevent growth of bacteria.

This arrangement is shown in sectional side view in Fig. 8.

Fig. 9 shows this arrangement when coupled to aerator 1 1 of water tap 10. In this arrangement, bristles 4 arranged in bundles 4a, 4b, 4c protrude into the chamber, which again may be filled with water with a certain pressure. The water thus flows around bristles 4 and then drains through the channels formed by holes 5a, 5b, 5c, thereby allowing an efficient cleaning of bristles 4 and bristle base 3.

In Fig. 10, a perspective view on an insertion member 12 is given. Insertion member 12 is formed of one piece and includes pins 13a, 13b, 13c. Pins 13a, 13b, 13c are rod-shaped and have a cross-sectional profile corresponding to the form of the holes 5a, 5b, 5c, i.e. the channels formed thereof.

Pins 13a, 13b, 13c protrude on one side of insertion member 12. At an end, a suspending part 14 formed by a ring-shaped hanger is provided.

In Fig. 1 1 , insertion member 12 is shown in a sectional side view when the pins 13a, 13b, 13c are inserted through the holes 5a, 5b and 5c. As illustrated, the pins 13a, 13b, 13c protrude from the holes 5a, 5b, 5c and penetrate through bristle base 3, thus passing at a root part of bundles 4a, 4b, 4c. Thus, leftovers and rests of tooth paste which may be enclosed in holes 5a, 5b, 5c or at the root parts of bundles 4a, 4b, 4c may be extruded from holes 5a, 5b, 5c and thus removed from toothbrush 1. This allows keeping toothbrush 1 clean and tidy. As shown in Fig. 12, suspending part 14 of insertion member 12 may be used for suspending the assembly e.g. at a hook at a wall. This allows a handy storing of toothbrush 1 e.g. in a bathroom and ensures that after each use, insertion member 12 is used. Thus, exposure of the assembly to fresh air and a handy usage is achieved.

In Fig. 13, an embodiment of a hairbrush 15 is shown in a perspective view seen from a front side (illustrated at the left side of Fig. 13) and from a rear side (illustrated at the right side of Fig. 13). Hairbrush 15 includes a grip 16 coupled with a bristle base 17 at which bristles forming bundles 18 are disposed. Through bristle base 17, pins 19 protrude between the bundles 18.

Hairbrush 15 is enclosed in a housing 20, covering hairbrush 15 and in particular grip 16 and bristle base 17 from lateral sides and from a rear side. A protrusion 21 from bristle base 17 protrudes through a recess 22 of housing 20. Thus, the bristle base may be easily removed from housing 20 by pushing protrusion 21. Further, bristle base 17 may easily be inserted by engaging protrusion 21 through recess 22 of housing 20.

Fig. 14 illustrates hairbrush 15 with removed bristle base 17 in a perspective side view.

Fig. 15 illustrates hairbrush 15 with removed bristle base 17 seen from a rear side. Fig. 16 shows hairbrush 15 in a sectional front and side view. On the left side of Fig. 16, bristle base 17 upon which bundles 18 of bristles are disposed and through which pins 19 protrude is included in housing 20. On the right side, the attachment of bristle base 17 in housing 20 the protrusion 21 is illustrated as seen from a side.

Fig. 17 shows a corresponding embodiment of a hairbrush or nailbrush with detached grip (not shown) . As may be seen from Figs. 13 to 17, channels 19a through which pins 19 protrude may be used for running water or a cleaning fluid through bristle base 17 when housing 20 is taken off. Thus, bristle base 17 may easily be cleaned and dried, as described in detail above. In Fig. 18, a further embodiment of a toothbrush 23 is illustrated in a perspective view seen from a front and from a rear side. Toothbrush 23 includes bristles forming bundles 24 disposed on a bristle base 25. Bristle base 25 includes a plurality of holes 26 leading through bristle base 25, which holes 26 are adapted to lead a fluid through bristle base 25 to the root part of bundles 24. Toothbrush 23 further includes a housing 27 covering the lateral sides and backside of bristle base 25 and of the grip. Housing 27 includes a recess 28 of essentially circular shape.

Fig. 19 shows toothbrush 23 in a perspective view when taken out of housing 27.

Fig. 20 illustrates the same when seen from the backside.

As may be seen from Fig. 21 , toothbrush 23 is adapted to be connected to, e.g. to be fixed to and/or pressed to an outlet of a water tap 29 with its recess 28. Through recess 28, water may be poured into a channel 30 leading to bristle base 25. Holes 26 form openings of channel 30, and recess 28 forms a further opening to channel 30, thus allowing water to be led through channel 30 and to leak between bundles 24. Thus, toothbrush 23 may be efficiently cleaned.

Claims

1. Brushing device (1) for personal hygiene, including

a bristle base (3), and

bristles (4) arranged on the bristle base (3), wherein

the bristle base (3) includes a plurality of channels (5a, 5b, 5c) leading through the bristle base (3).

2. Brushing device according to claim 1 , wherein

each of the plurality of channels (5a, 5b, 5c) is adapted to lead a fluid through the bristle base (3).

3. Brushing device according to any of the preceding claims, wherein

at least one of the channels (5a, 5b, 5c) has an opening located between the bristles (4) and/or between bundles (4a, 4b, 4c) formed by the bristles (4) .

4. Brushing device according to any of the preceding claims, wherein

the at least one of the channels (5a, 5b, 5c) has a further opening, the further opening being adapted to be attached to an outlet of a water tap.

5. Brushing device according to any of the preceding claims, wherein

the channels (5a, 5b, 5c) extend linearly through the bristle base (3) from a first side of the bristle base (3) to a second side of the bristle base (3), wherein the first side is located opposite to the second side, and wherein at the second side the bristles (4) are disposed.

6. Brushing device according to any of the preceding claims, further including an attachment member (6) adapted to be removably attached to the bristle base (3), wherein

the attachment member (6) is adapted to match with the bristle base (3).

7. Brushing device according to any of the preceding claims, wherein

the attachment member includes a surrounding wall (8) forming a chamber (6a) with the bristle base (3).

8. Brushing device according to any of the preceding claims, wherein

the attachment member (6) includes a recess (9) opening to the chamber

(6a).

9. Brushing device according to any of the preceding claims, wherein the recess (9) is adapted to be coupled with a water tap.

10. Brushing device according to any of the preceding claims, wherein

the attachment member (6) is adapted to be attached to the first side of the bristle base (3).

1 1. Brushing device according to any of the preceding claims, wherein

the surrounding wall (8) is adapted to surround the bristles (4) when the attachment member (6) is attached to the second side.

12. Brushing device according to any of the preceding claims, further including an insertion member ( 12) having at least one pin ( 13a, 13b, 13c), the pin

(13a, 13b, 13c) being insertable into one of the plurality of channels (5a, 5b, 5c).

13. Brushing device according to any of the preceding claims, wherein

the pin ( 13a, 13b, 13c) is adapted to fit to an interior of the one of the plurality of channels (5a, 5b, 5c).

14. Brushing device according to any of the preceding claims, wherein

the one of the plurality of channels (5a, 5b, 5c) is formed by a hole perforating the bristle base (3), and wherein

when the pin is inserted into the one of the channels (5a, 5b, 5c), the pin extends through the hole.

15. Brushing device according to any of the preceding claims, wherein

a plurality of pins ( 13a, 13b, 13c) is arranged at the insertion member (12) such that

+ for each of the plurality of channels (5a, 5b, 5c), a corresponding pin (13a, 13b, 13c) is provided, and

+ into each of the plurality of channels (5a, 5b, 5c), the corresponding pin (5a, 5b, 5c) is insertable.

16. Brushing device according to any of the preceding claims, wherein

the insertion member ( 12) includes a suspending part (14).

17. Brushing device according to any of the preceding claims, wherein

the brushing device is a toothbrush, a hairbrush or a nail brush.