WO1989000388A1

WO1989000388A1 - Toothbrush

Info

Publication number: WO1989000388A1
Application number: PCT/EP1988/000556
Authority: WO
Inventors: Friedrich Eisenmann
Original assignee: Friedrich Eisenmann
Priority date: 1987-07-09
Filing date: 1988-06-24
Publication date: 1989-01-26
Also published as: DE3722656A1; AU1980888A; CN1030349A

Abstract

The toothbrush has a handle (1). A disk (7) provided with bristles (8) is rotatably mounted at the front end of the handle (1). A second rotary disk (6) also mounted on an axis or shaft (3) is arranged at least approximately parallel to the first disk (7) at a distance at least approximately equal to the thickness of the teeth. The bristles (8) are arranged on the facing sides of the disks. The two disks (6, 7) are mounted on a common shaft (3) and are entrained together relative to the handle (1). The shaft (3) is also provided with bristles (11).

Description

toothbrush

The invention relates to a toothbrush with a handle and a plate which is rotatably mounted at the front end of the handle and is provided with bristles, a second drivable plate being arranged at least approximately parallel to the first plate at a distance at least approximately corresponding to the thickness of teeth. and wherein the bristles are arranged on the plates on their mutually facing sides.

The best known are toothbrushes in their conventional form with a handle and with a plurality of bristles arranged in a bundle shape in the front area for manual cleaning.

Electric toothbrushes are also already known, with the bristles being subjected to a pivoting and / or vibration movement. The disadvantage here, however, is that the oscillations or vibrations are so rapid or so high-frequency that the cleaning effect of the teeth thereby achieved is unsatisfactory. The front ends of the bristles cannot follow the rapid movements, so that they remain in the rest state or almost in the rest state. The cleaning effect of the known electric toothbrushes is inferior to that of manual cleaning. DE-OS 173 150 describes an electric toothbrush which has a drenba-mounted plate with bristles at the front end of a handle. The brush head or plate describes a circular movement and is additionally tiltable. This toothbrush is intended to achieve a greater cleaning effect on all curved areas of the tooth surface, in the gum pockets, in the gum grooves and in the interdental spaces. However, there is a partial division that chewing surfaces are difficult to clean. The cleaning effect itself is not yet optimal.

In CH-PS 69 561 a toothbrush is provided with a shaft on which two brushes are arranged at a distance from each other. The shaft is driven by a flywheel, the brushes being rotated due to their connection to the shaft.

In addition to its unwieldiness, the forced guidance is disadvantageous, as a result of which both the handiness and the cleaning effect and the mobility in the mouth suffer.

The present invention is therefore based on the object of creating a toothbrush of the type mentioned at the outset which, with simple handling, brings about a high cleaning effect within a very short time.

According to the invention, this object is achieved in that the plates are arranged on a common shaft and can be rotated together relative to the handle, and in that the shaft is provided with bristles protruding from its peripheral wall.

With the toothbrush according to the invention, intensive cleaning of the entire dentition is achieved in a very short time. By simply rolling over the chewing surfaces and moving back and forth in the mouth the shaft is attached to it together with the two

Plates in a third movement. Durcn the rotating

The teeth are cleaned optimally by moving the two plates with their bristles.

The arrangement of the bristles according to the invention enables simultaneous cleaning of the inside and outside of the tongs and the occlusal surfaces. In this way, a double number of teeth is cleaned practically in the same time or, conversely, the same number in half the time as in the conventional cleaning methods, with the occlusal surfaces or fissures also being cleaned precisely. This is achieved through a defined length and hardness of the bristles and brushes. Practically all surfaces of the teeth or rows of teeth of a jaw are cleaned three times more intensively in a certain unit of time than is the case with the known toothbrushes. By gently closing the rows of teeth, it is even possible to clean the upper and lower rows of teeth at the same time on all sides, which results in a cleaning factor of six in a certain time.

To adapt to different tooth sizes and thicknesses it can be provided that the plates are at least partially made of elastic material. So you can e.g. be rigid in the central area and elastic in the outer area, although complete elasticity can of course also be provided.

In a modification of this, the distance between the plates can be adjustable or adjustable, which also enables adaptation to different tooth shapes and sizes. For easier handling and better adaptation to the physiological conditions in the mouth, the plate further away from the handle can have a smaller diameter than the other plate. This plate runs along the inside of the teeth.

For a better adaptation of the toothbrush according to the invention to the teeth to be cleaned or the jaw shape, it can be provided that the two plates are connected to the handle in a tiltable or pivotable manner.

The tilting or swiveling can be achieved in different ways. For this purpose, the two plates or their common axis can be fastened on a spherical head, by means of which corresponding pivoting movements are possible.

The bristles arranged on the inside of the two plates can be arranged in a bundle shape in the usual way and can be fastened in any way in the plates.

To improve the cleaning effect, each plate can consist of a base plate and a perforated plate, one or more bristles being passed through two holes in the perforated plate, both free ends of which protrude from the perforated plate and fastened in the base plate or between the base plate and the perforated plate or are secured.

With this configuration, a large number of bristles can be easily attached to the plate, the attachment of the bristles being effected in the central region in the base plate or between the base plate and the perforated plate. This can be done, for example, by gluing, pinching or the like. With such an arrangement of the bristles in the perforated plate, at least a part of the bores can also run obliquely opposite the axis of the drain in a simple manner, as a result of which the position of the bristles optimally matches the surfaces to be cleaned, honing spaces, interspaces and the like. can be adjusted.

If the Deiden plates are fastened on a shaft, which in turn is fastened orenoar on an axis, the connector connecting to the handle, the shaft can be provided with through bristles for bristles.

In this way, if necessary, the shaft can be easily replaced together with the two plates.

In an advantageous development of the invention it can be provided that nub-like elevations are arranged in the outer peripheral region of the plates.

These nub-like elevations can be present instead of or in addition to bristles. The nubs can be used to massage the gums simultaneously while cleaning the teeth.

The two plates and the axis or shaft with the bristles can be made in one piece, e.g. made of plastic. Of course, separate parts are also possible.

In a very advantageous embodiment of the invention it can be provided that one or both plates are formed from individual circular elements which are separated from one another or connected to one another by intermediate elements.

If the two plates are formed from individual circular segments or lamellae, the toothbrush can be adapted even better to the shape of the teeth. In addition, the individual slats or circular segments can be referenced in a simple manner are formed in their bristles and / or their elasticity. For example, circular segments with a firmer shape and an elastic or resilient shape can alternate. Likewise, individual segments of a circle can also be provided with bristle knobs instead of bristles or only with knob-like elevations. Alternating bristle thicknesses can be used in the same way.

The individual lamellae can lie separately from one another, with a clear gap possibly even being present between the individual parts or they are connected to one another by intermediate members. Intermediate links are e.g. elastic plastics and / or glue possible, which ensure an elastic connection of the individual circular elements to each other.

Through differently designed circular segments, it is also possible in this way to produce differently strong contact pressures.

In a further embodiment of the invention it can be provided that the two plates are curved towards one another in their outer peripheral regions.

With this configuration, the teeth are encased better or a good gum massage is achieved in this way. This is particularly the case if nub-like elevations are provided in the outer area instead of or in addition to the bristles.

In the following, exemplary embodiments of the invention are described in principle with reference to the drawing.

It shows: Fig. 1: a side view, partly in section, of the toothbrush

2: a partial view according to FIG. 1 from behind (reduced)

Fig. 3: a partial section through a two-part plate

Fig. 4: a partial section through the upper region of a toothbrush of another design

5 shows a section along the line V-Y of FIG. 4th

Fig. 6: a partial section through the upper region of the toothbrush with a pivot bearing

7: a side view of two plates in a different embodiment

8 and 9 are front views of a plate, which is formed from individual circular segments, in two different embodiments

10: two plates formed from individual circle segments in a further embodiment

The toothbrush has a handle 1 which has a bore in the upper region for receiving a pivot pin 2. The pivot 2 is part of a shaft 3, via which the pivot 2 is rotatably connected to the shaft 3 with the handle 1. The shaft 3 has two shoulders 4 and 5, on each of which a disc or a plate 6, 7 is pushed and held there in a positive or non-positive manner. The plate 6 is - as can be seen from FIG. 1 - slightly smaller in diameter than the plate 7. Bristles 8 protrude in the form of bünoel on each of the mutually facing sides of the dividers 6 and 7. The bristles 8 can be arranged in several circles or in some other way distributed over the entire circumference of the inside of the plate 6 or 7. In addition to or in addition to the bristles 8, knobs 9 projecting inwards on the outer plates 6 and 7 in the outer region can also be arranged, through which a Zannfleisch massage is achieved. On the shaft 3 arranged in Durcngangsbohrungen 10 bristles 11 are attached, the bristles 11 in any way in the Bonrungen, z.ß. can be attached by gluing. Instead of through holes, simple blind holes can also be used.

As can be seen from the section according to FIG. 5, the through bores 10 can be guided straight or obliquely through the shaft. When using a separate axis 12, which is firmly connected to the handle 1, as shown in FIG. 4, the through bores 10 are to be arranged off-center (see FIG. 5).

As can be seen in particular from FIGS. 1 and 4, the outside, the inside and the occlusal surface of the teeth 21 shown in broken lines can be cleaned with one cleaning operation. For this purpose, the shaft 3 is placed on the chewing surfaces of the teeth 21, the bristles 8 of the plates 6 and 7 abutting the tooth sides. If the toothbrush is now moved along the chewing surfaces of the teeth by the handle 1, the shaft 3 and thus also the two plates 6 and 7 are rotated. In the toothbrush shown in FIGS. 1 and 2, the storage or Relative movement with respect to the handle 1 in the bore in which the pivot pin 2 is mounted, while in the embodiment according to FIGS. 4 and 5 a fixed axis 12 is provided on which the shaft 3 rotates. As can be seen further from FIG. 4, the shaft 3 and both plates 6 and 7 consist of one part, for example a hygienic plastic.

The bristles 8 in the plates 6 and 7 can be attached in any way in the plates. A very effective solution through which numerous bristles, e.g. only a few bristles lying together can be fastened in the plates 6 and 7 is shown in FIG. 3. As can be seen, a plate consists of a base plate 6A and a perforated plate 6B. Holes of any kind can be arranged in the perforated plate 6B. In general, you will each have two co-workers, 1 3 uses, that i g g f. can also run from the front of the panel to the rear of the panel. One or more bristles 8 can now be inserted through two holes 13 so that their ends protrude from the perforated plate 6B. The bristles 8 are now held in the bores 13 by a firm connection of the base plate 6A to the rear of the perforated plate 6B. This can e.g. by a clamping action, for which purpose the base plate 6A may have cutouts 14 in the area of the openings of the bores 13 for reasons of space.

FIG. 6 shows an embodiment of the toothbrush, the axis or shaft 3 being connected to the handle 1 via a pivot bearing 15. The pivot bearing 15 can, for example, have a ball head 16 which is mounted in a correspondingly complementary bore in the shaft 3 and is secured by a locking ring 17. As can be seen, in addition to the rotational movement about the axis 18, sicn can also achieve a pivoting movement about the pivot point 19. By rotating the two plates 6 and 7, a rotating wiping cleaning of the Zannflacnen and the interdental spaces on the outside and inside of the teeth is achieved. This is how a massage of the gum area is effected at the same time. The cleaning result can be optimized through a defined arrangement, hardness and length of the bristles, brushes and knobs.

The rotation of the Deiden discs 6 and 7 and the shaft 3 can if necessary also be carried out by an electric motor 20 which e.g. is arranged in the handle 1. By a drive connection, not shown, between the motor 20 and e.g. rotation 2 is achieved.

Particularly when the toothbrush is designed as an electric toothbrush, a detachable connection between the handle 1 and the actual toothbrush part with the two plates 6 and 7 and the shaft 3 will be provided, so that a simple and quick replacement can take place when this part wears out. Of course, you will provide appropriate locks between the drain pin 2 and the oem handle 1 if necessary.

The two plates 6 and 7 can be made of elastic material, which means that the distance between the two plates can vary accordingly or that the two plates 6 and 7 can be bent open.

By means of a spring device - not shown - the plate 6 can also be arranged on the shaft in an adjustable manner with respect to the plate 7.

If necessary, bristles can of course also be arranged on the outside of the plates 6 and 7 if the toothbrush according to the invention also wants to be used in a different way. FIG. 7 shows an embodiment of the invention, the two plates 6 and 7 facing each other in their outer peripheral regions and being curved in this way. In the same way as in the other exemplary embodiments, bristles 8 and / or nub-like elevations are arranged on the inside of the two plates 6 and 7 and additionally bristles 11 on the shaft 3.

8 and 9 each show a plate 6 which is formed from individual circular segments or lamellae 6A. Bristles 11 and / or nub-like elevations are in turn arranged on the individual circle segments 6A, their thickness and arrangement relative to the individual circle segments 6A being different. Likewise, the individual circle segments 6A can be different in terms of their shape and elasticity.

8, the individual circle segments are elastically connected to one another by an adhesive 22, while according to the exemplary embodiment according to FIG. 9 there is no connection between the individual circle segments 6A due to the gap 23 therebetween, with which the individual circle segments 6A act individually on the teeth and the gums according to their design.

10 shows two plates 6 or 7 which are formed from individual circular segments 6A, these being bent towards one another and thus giving an umbrella-like configuration. In this case, the two outer circumferential walls of the plates can be used directly for gum massage with a corresponding design.

If necessary, the individual circle segments 6A can also be arranged with a gap 23 between them, as in FIG. 9, in such a way that they partially overlap like a fan.

Claims

Patent claims

1. Zanno brush with a handle and a rotatably mounted plate at the front end of the handle, which is provided with bristles, a second rotatable teler being arranged in an at least approximately the thickness of teeth at least approximately parallel to the first plate, and wherein the bristles are arranged on the plates on their mutually facing sides, characterized in that the plates (6, 7) are arranged on a common shaft (3) and can be drenched relative to the handle (1), and in that the shaft (3) bristles (11) protruding from the peripheral wall thereof.

2. Toothbrush according to claim 1, d a d u r c h g e k e n n z e i c h n e t that the plate levels are at least approximately parallel to the Grifflängsacnse.

3. Toothbrush according to claim 1 or 2, characterized in that the plates (6,7) are at least partially made of elastic material.

4. Zannbrush according to one of claims 1 - 3, d a d u r c h g e k e n n z e i c h n e t that the distance between the plates (6,7) is adjustable or adjustable.

5. Toothbrush according to one of claims 1-4, d a d u r c h g e k e n n z e i c h n e t that the plate (6) further away from the handle (1) has a smaller diameter than the other plate (7).

6. Zannbrush according to claim 1, d a d u r c h g e k e n n z e i c h n e t that the two plates (6,7) tiltable or pivotable with the handle

(1) are connected.

7. Zannbrush according to one of claims 1-6, characterized in that the plate (6 or 7) consists of a base plate (6A) and a perforated plate (6B), one or more bristles (8th) each through two holes (13) ) are carried out, the two free ends of which protrude from the perforated plate and which are fastened or secured in the base plate or between the base plate and the perforated plate.

8. Toothbrush according to claim 7, d a d u r c h g e k e n n z e i c h n e t that at least part of the holes (13) in the perforated plate

(6A) runs obliquely with respect to the axis of rotation (18).

9. Toothbrush according to one of claims 1-8, d a d u r c h g e k e n n z e i c h n e t that the shaft is provided with through holes (10) for bristles that are straight or oblique or off-center through the shaft

(3) run.

10. Zannbrush according to one of claims 1 - 9, d a d u r c h g e k e n n z e i c h n e t, that nub-like elevations (9) are arranged in the outer peripheral region of the plates (6 or 7).

11. Toothbrush according to one of claims 1-10, that a d u r c h g e k e n n z e i c h n e t that one or both plates are formed from individual segments of a circle, which are separated from each other or connected by intermediate members.

12. Zann brush according to one of claims 1 - 11, so that the two plates are arched towards one another in their outer circumferential areas.