EP0129585A1 - Tooth cleaning apparatus - Google Patents

Tooth cleaning apparatus

Info

Publication number
EP0129585A1
EP0129585A1 EP19840900281 EP84900281A EP0129585A1 EP 0129585 A1 EP0129585 A1 EP 0129585A1 EP 19840900281 EP19840900281 EP 19840900281 EP 84900281 A EP84900281 A EP 84900281A EP 0129585 A1 EP0129585 A1 EP 0129585A1
Authority
EP
European Patent Office
Prior art keywords
brush
drive
characterized
part
bristles
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19840900281
Other languages
German (de)
French (fr)
Inventor
Otto Rosenstatter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Duerr-Dental & Co KG GmbH
Duerr Dental SE
Original Assignee
Duerr-Dental & Co KG GmbH
Duerr Dental SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to AT4683/82 priority Critical
Priority to AT468382 priority
Priority to AT275283 priority
Priority to AT2752/83 priority
Application filed by Duerr-Dental & Co KG GmbH, Duerr Dental SE filed Critical Duerr-Dental & Co KG GmbH
Publication of EP0129585A1 publication Critical patent/EP0129585A1/en
Application status is Withdrawn legal-status Critical

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/02Rinsing or air-blowing devices, e.g. using fluid jets or comprising liquid medication
    • A61C17/0202Hand-pieces
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/16Power-driven cleaning or polishing devices
    • A61C17/22Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
    • A61C17/24Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like rotating continuously
    • A61C17/26Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like rotating continuously driven by electric motor
    • A61C17/28Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like rotating continuously driven by electric motor with rinsing means

Abstract

L'appareil pour le nettoyage des dents à entraînement électrique possède une partie entraînement et manche (1) dotée d'un moteur d'entraînement et, le cas échéant, un interrupteur (40). The apparatus for cleaning teeth electric drive has a drive part and the handle (1) with a drive motor and, if necessary, a switch (40). Sur son prolongement est disposée une partie brosse amovible (2). On its extension there is arranged a removable brush portion (2). On enlève la partie brosse (2) en appuyant sur les zones de pression (35.2) de la partie de déformation (35.1). the brush portion is removed (2) by pressing the pressure zones (35.2) of the deformation portion (35.1). La partie brosse (2) porte à sa tête repliée (6) une brosse creuse (3) dont les soies sont disposées vers le devant sur un porte-soies tournant autour de son axe. The brush portion (2) carries at its folded head (6) a hollow brush (3) in which the bristles are disposed toward the front of a bristle carrier rotating about its axis. Les soies laissent un espace central libre (23) entre les touffes disposées en couronne. The bristles leave free a central space (23) between the tufts arranged in a ring.

Description

Name: Dental cleaning device

Description:

The invention relates to a tooth cleaning device with electric drive, with a drive and handle part and a brush part, wherein the moving of the drive, carries replaceable brush, and wherein an opening into the region of the bristles Plüssigkeitsleitung liquid can be fed. There is a plurality of tooth cleaning devices in the form of electrically driven, mechanically movable toothbrushes and hydration devices known.

one hand there is oscillating about an axis brush systems, to replace the reciprocating motion of bristles with the normal manual toothbrush under the so-called "electric toothbrushes". On the other hand, there are about axes rotatingly driven roller brush in which the bristles radially from the brush holder protrude (US-P 3. 739.416, US-P 3. 829.922), but the .hervorrufen no suitable motion of the bristles on .the teeth and gums. Further, there is rotatably driven brush, where the bristles in the essential loan are arranged axially parallel in a ring, wherein forming the 'bristle ends on a corresponding, substantially normal to the axis of rotation surface and is worked end face with which (GB-A 2,008,398 A ). Details that would allow a practical implementation, this document can not be inferred. One older similar operating manual device according to US Patent No. 2,252,251 with compressed drive has not suitable einenrotierend driven cleaning kδrper of elastic material, but because of the pressure drive and the lack of bristles to see practical use. A equipped with a flexible shaft device according to US-PS 3, .822,432 head has a similar dry, rotating Gummireinigungs- or a roller brush, does not contact denenman especially in hard to reach areas of the teeth and gums. For the Hand¬ piece of the dentist, there are Aufsetzeinheiten with rotating brushes and deformation bodies as examples play, by US Patent No. 2,093,007. but for daily tooth cleaning of the user themselves are not designed for.

On the other hand, working-cleaning Urig devices, particularly for cleaning between the teeth and massaging the gums are known with relatively sharp, mostly pulsed waterjet.

It has also been brushes mechanically moving tooth and operating with water jet Reinigungs¬ device combined either with two own handsets or with a hand apparatus to which wahl¬, the toothbrush or the Mundduschendüse is placed, with corresponding arrangements for the safe function to meet are (US-PS 4,141,352, DE-AS 21 09 005, DE-AS 21 09 006 GB-OS 2071498 A). These devices are very complicated in construction and especially un¬ convenient to use, because a change of the device or a change of essays is required for cleaning teeth.

In reciprocating or vibrating toothbrushes has already liquid supply in a handheld device or the brush head .integriert (US-PS 3, .273,189, DE-OS 31 19 338 AI). These systems have not been used in practice found, presumably because the reciprocating toothbrush has not brought the hoped-for good cleaning and because the Flüssigkeits¬ supply was unfavorable.

For a rotating zähnärztliches handpiece, in particular angle, is known from AT-PS 23 99 58 liquid feed went from outside to the oblique faces of the work tool Werk¬ known. Such equipped with bevel gear and ball bearing handpiece is too expensive and too heavy for daily self-cleaning teeth. Also lack appropriate drive options in the household and the tools for cleaning Selbstzahn¬ unsuitable.

A device for flushing and massage of the gums also shows the DE-OS 29 01 13β, after which a rubber loading standing massage tool over a swash plate os¬ is zillierend driven and from the outer region of the massage tool through a central conduit in the rotary drive fluid is supplied to the handle portion. The liquid conduit is used in this embodiment, the entire region of the cleaning member as a bearing for the drive shaft, the two clutches ... (. Liquid- and Getriebeküpplung) immediately next to each other in the region of the mechanical coupling between the drive member and cleaning member

O'vϊPI are provided. If the fluid is leaking clutch, the transmission clutch is immediately wet, since no spatial separation is provided. In addition, the designed with a slim tool neck cleaning part on very agile and can not being manufactured as a cheap disposable part

If you want to design an appropriate the practical needs tooth cleaning device, then a large number of factors to consider. The invention is based on the above-mentioned prior art and its Claims 1 and 2 are especially formulated starting from the DE-OS 57 287 .16. This arrangement and essential parts of the invention have in common that. it is a tooth-cleaning device with electric drive, with a drive and with a grip part and

These brush part, which carries the moving of the drive replaceable brush and in which an opening into the region of the bristles liquid line liquid zu¬ is feasible. In the known embodiment, the liquid is fed centrally between the bristles of a toothbrush back and herschwingenden namely with a device serving as a spray nozzle. Provision may be made of soft material elastichem a frustoconical Strahlenleitmantel. Deviating from the invention, the drive of the toothbrush here does not take place electromechanically instead by a pneumatic vibration drive.

A similar output to the invention is also the teeth-cleaning device according to DE-OS 31 19 338 in which a conventional electric toothbrush with a vibratory drive of the brush part entering the brush part at its rear side from the outside, has a with a reservoir detachable fluid conduit in themselves bristle carrier branched into three channels through which the liquid is sprayed approximately parallel to the bristles. In the reservoir there are three different media (cleaning liquid, spray, mouthwash) available to be fed, the brush or optionally after a pre-determinable be¬ program sequence during the application of the toothed.

Detailed investigations have shown that the ever-changing oscillating motion of the bristles, is not very favorable because impurities in the region of the gums and between the teeth thereby rather deeper brushed into the periodontal pockets or spaces between the teeth as to be removed. This results in increased inflammation and bleeding of the gums. Accordingly, also reciprocating hollow brushes, such as not very low, for example according to GB-PS 5 00 517, because they also have an alternating rotation of the hollow brush, the same applies to the device according to AT-PS 35.2 864 which s using a crank mechanism operates with driven bristles. After today regarded as particularly favorable brushing technique, the bristles of a toothbrush should carry small continuous circular motion on the tooth surfaces. This purification technique is difficult to reach by hand and above all, no devices are available that also allow for appropriate training to be beneficial known flushing the type of oral irrigators.

It is therefore the object of the invention essentially is to embody a tooth-cleaning device of the aforementioned type that, despite the feed of at least one medium, a same-rotating movement of the bristles is attained, wherein a., Easy replacement of the brush parts or retained should be made possible so that a tooth-cleaning device of the type mentioned Urig to improve the effect of safer function in his overall cleaning and are to simplify the handling for the user significantly.

According to the invention now the combination of a rotary toothbrush end .is provided with a liquid supply. These may be characterized in the representation for most countries, mainly characterized in that in a dental cleaning device with electrically moving interchangeable

Brush and opening into the region of the bristles, the brush as liquid around their axis of rotation encircling-set-up with the end face on the teeth hollow brush is leiturig formed with annularly disposed bristles.

In a more suitable for different countries Dar¬ position, the invention can as follows zusammen¬ summarize:

Tooth-cleaning Obergurig device with electric drive, with a drive and handle portion and a located in extension of the same subsequent brush member, a rotation about its axis angetrie¬ from the drive bene brush is arranged at the front head, which has a ring shape arranged on a brush holder bristles, which in at least one axis of rotation perpendicular plane or - somewhat similar lying concave surface of revolution such as "part-spherical, part-ellipsoid, paraboloid, truncated cone ending circulate bristle tips, the brush with the end face of Hohl¬ must be mounted on the teeth, and wherein the turning axis for the main direction of extent is angled away from the drive and the handle part and the brush part, to achieve even the most inaccessible areas of the teeth and gums, and wherein, by the drive and the handle portion via a fluid line whose discharge orifice is located in the cleaning area of ​​the bristles, liquid can be fed.

By combining the rotating end toothbrush with an optionally alone or in cooperation usable with a toothbrush liquid supply in a single hand-held device is now an optimum cleaning of the teeth allows characterized in contrast to the known proposals for a vibrating toothbrush, on the one hand the bristle tips even at unge¬ can not remain on the surface to be cleaned toothed suitably handling, which is, but the main disadvantage of the vibrating toothbrush systems are forced to move over the tooth surface, and that optionally at the same time during the rotating toothbrush treatment also liquid, either water or water with other media for treating the tooth- . Surface and / or gums can be supplied, but that can be supplied on the other hand either distributed without drive of the toothbrush in the liquid or targeted pulsed beam without would have to be exchanged at irgend¬ which parts of the toothbrush. This optimal effect can not be obtained (U.S. Patent No. 2,215,03 AT-PS 1 67 438) with other known motor-driven tooth cleaning devices with environmentally running drive shaft. In the apparatus according to US-PS 2,215,031 a plurality of bristle tufts are successively driven to rotate in the same direction, but the effect of the arrangement Gesamt¬ little from the aforementioned, is partly hollow rotating brush is different, since the

Circumferential movements of neighboring tufts are opposite in the immediate vicinity. Also, the circumferential brush AT-PS 1 67 38 is less favorable with regard to the cleaning effect, since the bristles radially from - lo ¬

countries bristle carrier protrude. The best available cleaning effect, the liquid through the concomitant use of water or a special cleaning the work area of ​​the peripheral bristle Returns can not be realized with the known proposals (AT-PS 348 660, EP-PS 25 456) because these tantamount to exchange an oscillating brush portion against a part of a jet nozzle, through which the cleaning liquid is supplied. With these devices, therefore, is either flushing or

Brushing the teeth possible, but not both. Rinsing with simultaneous manual brush further illustrates the AT-PS 354 616, which shows a toothbrush with water line connection. But muJ3 here the desired circular brush movement by hand .ausge¬ be, which is not possible, especially in hard to reach areas leads.

For the realization of a gear according to the invention reinigungsgerä there are various ways that depend on whether you want äußerhalbverlegen the liquid feed to the center of the rotating brush or after and if you want to make the whole brush part interchangeably to the several people without the risk want one transmission of germs and can use the same drive and handle part or whether you et up instrument a simpler one-person dental cleaning with replaceable brushes and possibly interchangeable Plüssigkeitsdusen, but both can be operated simultaneously, create.

In e 'iner embodiment of the invention, the Plüssigkeits¬ can lead outside of the bristles which, in addition to the rotation antreib¬ cash hollow brush at least one outlet nozzle, as is similarly known for vibrating toothbrushes. Then, one is not dependent on the central supply in the internal design of the drive and can

make free nozzle different needs. According to a further particularly advantageous proposal of the invention, the -Plüssigkeitsleitung can be guided in the bristle carrier and the brush central space of the hollow brush may be formed as a sleeve and the

Plüssigkeitsleitung with its front end pass through the sleeve coaxially and opening into the enclosed space of bristles. Then, the cleaning liquid is supplied to the center of the treatment and can be well held together in overall .meinsamem operation of the bristles. The wiring can carry bei¬ for centering and there is a clear structure.

For the feeding of different treatment fluids two fluid lines can at least be provided, which can be at least in the outlet region, the liquids exit jointly. The device can ver¬ the most diverse cleaning and

be adjusted only by adding other media. The main liquid line may be surrounded by an annular space into which opens at least one further line for supplying an additional medium. So is mixed until immediately before treatment and it can take a reactive mixture are brought together directly at the treatment site. The feed further medium can be under pressure if the treatment that makes sense. can appear, which pressure in the device or outside the device er¬ can be generated. However, the supply of the additional medium can be sucked ange¬ by injector action of the main fluid flow according to another embodiment. Then- more pressure sources or valves for the supply and pressure generation is not required. A very easy to be produced and functional solution for achieving a rotating hollow brush with Plussigkeitszufuhr can especially be achieved in that an annular space is formed between the outer surface of the sleeve passing through the front end of the fluid line and the inner wall of the sleeve of a connecting channel to the bottom area Lager¬ bore defining, in the at least one further line leads for the supply of medium. In all solutions where the liquid is fed centrally, there is the advantage that you can Clean the tooth surfaces, the periodontal pockets and interdental spaces quickly and effectively, with the bristles plate helps the trains brought liquid longer hold back at one set point. If

/ Additionally at least one further medium is supplied in the region of the outlet of the first fluid line, then the mixture, for example to produce a reaction mixture of the two media, as near as possible be done at the site. In admixture in the base region of the sleeve it is carried out in only a sleeve length of the bristle coronary corresponding distance.

Although a rotating brush with hollow cone drive is already refer 2008939 A, GB-OS. However, the brush part is not exchangeable arranged at the drive input part and there is no fluid intake with the resulting special design problems treated. In deviation from this and other solutions, the invention provides for devices' with and without

Hydration prior to that on its axis driven in rotation hollow brush is mounted at one of the drive and Griff¬ partially detachable brush part and are provided between the drive and the handle part and the brush part, releasable coupling means, the at least one coupling in the rotating drive and locking parts for include sticking. Such a device can then be used in a multi-person household without the risk of transmission of germs and the brush part can be designed as an inexpensive Masseriteil. The holding coupling can be advantageously configured so that engaging catch hooks are provided on the brush part in recesses in the drive input and the handle part, which engage behind locking webs which are formed on a latching and deformation part, welchesals thin-walled termination of the drive and the handle part aus¬ formed and which has marked pressure ranges such that upon depression of the print areas, the locking webs having deformation regions expand. Such a coupling can be made easily and inexpensively by injection molding and is'

Continuous use functional.

A particularly favorable solution for the removable coupling of the rotating hollow brush and the convenient storage of both the drive shaft and the Bürsten¬ part provides that the stored overall in the drive and grip part and rotating, driven by the motor drive shaft in the drive - and the handle part is mounted in the main extension direction extending shaft and carries a sleeve at its front end which has a Kegelradzahnkranz which comes with a bevel gear on the brush carrier, which is mounted angled brush part to the main extension direction of the engagement. Such a configuration that is expedient standard for multi-person toothbrushes without Plussigkeitszufuhr, allows for a very simple design of the brush part and the storage of the brush holder so that inexpensive mass parts can be designed and the result is a very simple, easy to generating and functional solution to obtain a hollow circular brush for a plurality of persons with a base unit, wherein the separation of the actuator when switching takes place in the head. In this case, the removable brush holder is expedient lang¬ stretched designed with at least the entire length of the cleaning Eintauch¬ apparatus part in the mouth. It suitably has a matching to the shaft receiving passage and a thin wall, the outer boundary in the circuit at the input and the handle part widens conically. If one wants to assign such a brush part which mainly provided Plüssigkeitsleitung low, so is allowed to these run and, if necessary the further line substantially parallel to the central receiving channel for the shaft of the drive and the handle part, which is preferably inserted in the wall of the receiving channel or are. In this case, the portion of the fluid conduit in the brush part is coupling of a plug connected to the portion of the fluid line in the drive and grip part. This is designed as a multiple clutch in several lines. The Plüssigkeitsleitung or fluid lines are in the area of ​​coupling appropriately with respect to the terminal end face of the brush part are reset and terminate in a widening for receiving the seal, the coupling member having the drive and handle eil. So same brush parts for toothed can brush with and used without Plüssigkeitszufuhr to rationalize mass production. Getriebe¬ coupling the one hand and retaining parts and Flüssigkeits¬ clutch on the other hand are spatially separated far from each other, thereby influencing each other freely and easily well sealed.

For supplying the liquid line can provide table or wall mounted on the type of irrigator operating pump or a pump in the drive and grip part an outboard in one. A pump drive and the handle part is preferably coupled to the drive shaft of the rotary drive or detachable A particularly simple design of the tooth-cleaning device of the invention also follows from storage of the bristle carrier. For this purpose is provided in a bevor¬ ferred embodiment that cut at the bevel gear cogs of the brush holder, a tapered Lagerab¬ connects, which is mounted in the bearing bore of the head of the brush holder outward and axially fixed by a radially insertable plug-in bolt. Such storage is for teeth cleaning devices. suitable Plüssigkeitszufuhr and without Plussigkeitszufuhr and also for dental cleaning device with interchangeable throughout Bürstentei or with the drive and grip part fixed brush part and inventively provided. It may be formed as a one-piece brush exchange element, which is to be designed as a cheap disposable part then, when the Kegel¬ rad dental materials for the duration of use of the brush have sufficient strength. A particularly expedient moderate configuration provides, however, that the brush carrier is divided into a storage and Kegelradteil with the Kegelradzahnkranz and an actual bristle carrier, which can be plugged in a rotationally connected to each other. Then you can the Kegelradzahnkranzteil the Festigkeitsbe- dürfnissen the small teeth make for and do not need the special and needs of the drive different circumstances needs of the bristle attachment to show consideration, but can turn the brush holder under the terms of the optimal production and securing the "make bristles. the production of the replaceable brush is further less expensive. / ^ O Ϊ ΛPI the bristle carrier may be formed as a substantially flat, provided with a central orifice disk case where the bristles are secured. also, such a toothbrush can be used for cleaning devices be used without fluid intake and hydration. This also applies to the integrated with the bevel gear trained brushes.

The sleeve for Pixierung the disc may have a flattened off coaxial port set which is provided with at least one radially resilient projection which engages in at least one recess of the corresponding axial disc surface. In this case, advantageously, one set elastic ring may be formed by a projection of a Rille- the port set. To facilitate inspection, the outer end face of the bristle-carrying disc may be profiled, for example, by circumferential grooves, or the like..

Special attention is also on the design of the

to lay brush as such, and in particular the selection of the bristles and the design of the bristle tips. This must be rounded for gentle cleaning and massage. It may be particularly useful in the present invention that the tips of the bristles, end at different distances from the brush carrier because then anatomy can be adapted particularly well and especially toothed bags and interdental spaces better achieved ge equip. The ends may lie in the most diverse, already mentioned hereinbefore surfaces. A particularly good cleaning effect can be achieved when two rings of bristles on the sleeve, the bristle carrier and the disk are arranged at least, with the bristles at least a- outer rim on those projecting at least one inner shroud, so that a Stufen¬ brush results, in which the bristles, however, support gegen¬ other. The supernatant of the outer bristles relative to the inner can be up to about half the length of the bristles of the inner ring. The bristles are advantageously in an angle of between 5 ° and 30 °., Preferred wise between 15 ° and 20 ° to the axis of rotation of the hollow brush or sleeve axis inclined outwardly projecting. It can be cleaned with the inner bristles on a tooth corner and the outer bristles in between teeth and there are good support and still Einzel¬ cleaning effects even in hard to reach places. Particularly good cleaning effects arise from the hollow brush DER above type 2500-3 00th Revolutions per minute, preferably 1000 to 500 revolutions per minute when the Hohlbürsteninnen- is diameter between 5 and 10 mm. A lower rotational speed improves the penetration of the bristles into the interdental spaces, during high rotational speeds improve the cleaning performance. A well-usable

Therefore, compromise is in the given preferred ranges. The brushes and their drive specifications are well suited for cleaning without liquid and liquid. Further details and features of the invention arise from the following, given with reference to the drawings part of the description, but the invention to the drawing views is not limited, but is susceptible to various variants and wherein especially the individual features need not be present all in combination, but also individually lead to advantageous solutions differently designed devices. The invention has three main aspects, which both individually and together offer particular advantages in the possible combinations and keitszufuhr inventions darstellerxl.Vereinigung a rotating operating with the end face of the hollow brush with the Zu¬ transmission of liquids, while the possibility of liquid outside and / or to the center and with line parallel to the bristles opening out Flüssigkeits¬ substantially extending in the brush part in a longitudinal direction and possibilities for several liquids which can be used singly and together. 2. Design of a replaceable brush head with mechanical coupling in the region of the bevel gear and possibly the clutch Plüssigkeitsleitung in the connection region. Thus, a simple construction of the replacement brush part and a solid support of the drive shaft, and a simpler, safer, mechanical drive can be achieved, despite separation. 3. Design of the rotating brush with easy to change Bürsten¬ carrier, perhaps despite supply of liquid to the center and design of the bristle ends in different planes or

Surfaces and angles and materials, wherein the bristles are arranged at the end hohlzylindr.isch on the bristle carrier. Embodiments of the invention are described below with reference to the drawings.

Show it:

Fig. 1 is a view of a tooth-cleaning device;

2 shows a longitudinal section through the front part of the drive and the handle portion with the adjacent shaft, whereby the lower half of the drive: and handle portion relative to the housing and resting and deformation part - cut with respect to the internal parts of the engine, clutch, and cover. "shown in view.

Fig. 3 shows a longitudinal section through a clip-on the shank brush part.

Fig. 4 is an enlarged partial longitudinal section through the

Head of the brush part, this corresponds to the plugged-together state, and the Imaging Logo of Figures 2 and 3; Fig.

Fig. 5 shows a longitudinal section through a dental cleaning device with a second embodiment

Liquid supply to the brush head; Pig. 6 is a longitudinal section through the brush part of the apparatus of FIG. 5;

7 is an enlarged longitudinal section through the r -. Head of the brush part of the embodiment according to d e

Fig. 5 u. 6, but in the assembled Zus

Fig. 8 is a hollow brush in an oblique view;

10 Figure 9 is a longitudinal section through a brush part of a further embodiment.

FIG. 10 is an enlarged cross section taken along the line 10-10 in Fig. 9;

15

Pig. 11 is an end view of the brush part according to the

Pig. 9 and 10 in the region of the mechanical -

Clutch and the Flüssigkeitskupplurig;

20 Figure 12 is a longitudinal sectional view of a brush head similar to Figure 7, but with stepped brush and some variants..;

Pig. 13 the plan view of the bristle disk .a

_-. of the embodiment of Fig. 12.

25 Pig. 1 shows the external view of a Zahnreinigungsgerat. it like it play all the exemplary embodiment drawn below 'corresponds substantially. cleaning device such toothed has a drive and handle 1 and in subsequent extension of the same

The brush section 2 on which a hollow rotating brush 3 is arranged on the angled to the main extension direction of drive and handle 1 and the brush part of the brush head 2. 6 The free brush means space 23 can be seen. In the drive and handle portion 1, an electrical motor drive input is 15 (Fig. 2 and 5). It can be powered by a rechargeable, installed in the handle portion battery or via an electrical connecting cable 33 (Fig. 5). For the purpose of input and Auskuppeln_s see the mechanical coupling and disconnection of the brush member 2 is the front portion of the drive and the handle part thin-walled deformable than resting and deformation part designed with labeled 35.1 35.2 pressure ranges. A switch is preferably protected by a cover 40, for example made of rubber,

The Pig. 2 shows the basic mechanical structure for the rotating drive of the mounted on a plug-in part 2 Bürsten¬ hollow brush. 3

From the drive and the handle part 1 is a hollow shaft. 14 (Fig. 2 and 5) from where a via a clutch 16 connected to the motor 15 drive shaft 17 is supported rotatably. The front of the shaft 14 projecting end of the drive shaft 17 is equipped with a rim 20 having a Kegelradzahn¬ sleeve 21 which is attached the drive shaft 17 diametrically passing through the pin 22 by means of a. (Fig. 4). Between the sleeve 21 and the front end of the shaft 14, a sliding and sealing ring 18 in an annular groove 28 of the drive shaft 17 is inserted.

A Aufsteckb to the shank 14 'arene Bürsteπteil 2, Fig. 3 in longitudinal section. The brush part 2 has a coaxial receiving channel. 5 The wall 4 of the brush member 2 is cylindrical over most of the length and flares to connect to the drive and grip part. 1 For the form-locking, rotationally fixed connection with the drive and handle 1 latching hooks 36 are provided, the recesses in Aus¬ 34 of the drive and the handle part 1 there einschieb¬ bar and are spring-mounted locking webs engage behind 35th The locking webs 35 are formed on a thin-wall, the front, conical locking and Verformungs¬ part 35-1 and widen lateral pressure on the selected pressure ranges 35.2 slightly and give off the locking hooks 36 of the brush member 2 freely, so that he subtracted from the shank 14 can be.

At the free end of the brush head portion 2 be .6 is angled to the main direction of extension by 90 ° and equipped with a hollow brush. 3 Among hollow brush is understood to mean that the bristles or annular 12 are arranged annularly on a bristle support end side of this standing out and remains free a central space bristle 23rd Here, the bristle carrier 31 is formed as a sleeve 32nd The brush is so as to the axis of rotation encircling-set-up with the end face on the teeth rotary brush ge staltet, wherein the bristle tips in a direction perpendicular to the axis of rotation level, or somewhat similar lying concave surface of revolution, such as part-spherical, part-ellipsoid, paraboloid, cone frustum end up. Thereby the bristles, as shown below, also end in several planes or surfaces. Their ends are suitable form for treatment, so as to allow a good cleaning, but no injuries Ver¬, - especially on the gingiva, cause, ie preferably round.

To accommodate the Hohlbürste3ist the head. 6 provided with a bearing bore 11, which is arranged perpendicular to Aufηahme- channel. 5 However, the two blind bores (Auf¬ acquisition channel 5, the bearing bore 11) does not go completely into one another, but are separated for the most part by a web. 13 11 thereby forms the bearing bore, an outer bearing for a tapered bearing ection 7 of the bristle carrier 31 formed as in this embodiment, the brush holder. It is with a Kegel¬ radzahnkranz 10 provided in the teeth of the Kegel¬ radzahnkranz 20 of the sleeve 21 of the drive shaft 17 engages ein¬. In order to enable this operation and thus the formation of the bevel gear 19, which expand to accommodate the ring gear 10 is bearing bore see ver¬ 11 in this area with a Dürchbruch into the receiving channel. 5 The bearing portion 7 carries an annular groove 8, into which a locking pin 9 is inserted radially, which is anchored in the head .6. The sleeve 32 of the hollow brush 3 is thereby easily replaceable axially non gehalten.- in the head 6. Such or similar storage of the brush holder with bevel gear and engaged with the bevel gear of the drive is drawn all the embodiments together. For example, an angling of the axes of rotation is selected with each other by 90 ° here. Depending on the design of the brush and the other features of the appliance, a 90 ° angle differing can be selected.

The embodiment illustrated to 7 in FIGS. 5 'shows yet additional supply of liquid into the washing area of the bristles, specifically here in bevor¬ ferred embodiment in the bristle medium space 23 of the hollow brush 3, ie directly at the point of use.

Compared to the embodiment of FIGS. 2 to 4 this only minor additions in the brush part 2, but no fundamental changes are needed. The carrier is Bürsten¬ herein as direct bristle carrier 31 ge staltet and, together with the bearing section 7, a sleeve 32 is carried axially of the bent portion terminally a liquid line is guided in the brush central space 23 27th thereto, the bristle carrier 31 has an extended outlet opening 26, in a sliding and sealing ring 24 surrounds the end of the Plüssigkeits¬ line 27 and is fixed by an insert sleeve 25th The Plüssigkeitsleitung 27 can be a hose made of rubber or some suitable plastic, but also a thin metal tube in particular. In this Ausführungs¬ example the Plüssigkeitsleitung is continuous ausge¬ leads and opens axially within the bearing bore 11 in the enlarged outlet opening 26. From the Lager¬ bore 11 from the liquid pipe 27 extends in another sequence along the receiving channel in parallel in the wall 4, in which it is used and terminates in an extension 30 in the connection region of the Bürsten¬ part 2, which lies within the end face. In the extension 30, the end of the fluid conduit as Plussigkeitskupplung 29 projects, as, inter alia, Figure 6 shows so that the conduit end in a, in a housing recess in the head of the drive and handle. part 1 arranged coupling sealing ring can be inserted, as Figure 5 illustrates Fig.. The liquid line 27 extends further in all Aus¬ exemplary embodiments with Plussigkeitszufuhr by the drive and grip part and can be configured there in different ways. According to Fig. 5 it enters the rear Late drive and handle portion 1 and extends longitudinally therethrough. It can be fed from the outside or it can inside the drive and also supply means may be provided for liquids. The fluid coupling 29 is approximately the length of the

OMPI shaft 14 separated from the transmission clutch, the bevel gear 1 and directly in the vicinity of the mechanical

Coupling by the locking parts 35 and locking web

Latching hook 36 is disposed. corresponds by the back transfer of the pipe end behind the end face and in that the other construction of the brush section 2 according to Fig. 6 completely to that of FIG. 3, the brush part 27 can also be readily adapted to a driving and handle portion 1 according to Pig the Plüssigkeitsleitung. 2 are recognized in which no liquid supply is provided. The total length of the brush part is at least as large as the immersion length in the mouth to reach the rearmost teeth well and not let the drive and grip part come into contact with the lips and mucous membranes.

The Plüssigkeitsversorgung can be implemented in various ways. According to FIG. 5, a drive and handle part 1 with Plüssigkeitsversorgung with a peristaltic pump 37 is provided, the two schraubenwendel- like arranged on the drive shaft 38 has Quetschflügel. The Quetschflügel 38 squeeze the Plüssigkeits¬ line 27 continuously from back to front so that the liquid sucked from the outside is continuously passed into the hollow brush. 3 To protect the Plüssigkeitsleitung 27 is a separation or protective layer 39 is provided. In the drive and the handle part 1 is arranged in connection to the peristaltic pump 37, the electric drive motor 15 of the peristaltic pump bearing 37th Drive shaft 17 directly drives. However, the motor 15 is receiving area in Pig. 5 as well as the brush part 2 cut for reasons of space and does not contain constructive projecting end of the tubing 27 tank containing the cleaning fluid may be immersed in a, from which the liquid is conveyed through the self-priming peristaltic pump 37th However, it could also be a reservoir in the drive or handle part be provided first As already mentioned, the electrical supply via a rechargeable battery can be done so that the line is omitted 33rd If no continuous delivery of liquid is desired, the pump can be otherwise designed and mono- and be uncoupled or completely dispensed with and be replaced by an external pump.

The Pig. 8 shows in an oblique view a Hohlbürs' te with brush carrier 31 and ring gear 10, and Lagerabschnit 7 and annular groove 8 in which the bristles 12 are arranged in a ring around the brush means chamber 23 directly on the bristle carrier 31 the front side, as it corresponds examples the Ausführungs¬ described so far, the interior of the bristle carrier full as shown in FIGS. 3 and 4 or hollow as according to Figure 5, may be designed 6 and 7.

In the embodiment of Fig. 9 to 11 fluid supply is also similar superiors see as described above. Identical parts are provided with the same reference numerals. As shown particularly in FIGS. 10 and 11 er¬ visibly, but are parallel to the liquid line two lines 'used in the wall 4 of the brush section 2, which open through the web 13 in the bottom region of the bearing bore 11, via the lines 27' 27 27 supplied media are moved from the bottom region of the bearing bore 11 by a to the end portion 43 of the Plüssigkeitsleitung 27 coaxial annular space 42 through the sleeve 32 into the bristle medium space 23. the mixing of a liquid from the line 27 with a medium from the conduit 27 'is therefore only possible in the bristle center space, so daJ3 one is possibly achieved to be generated reaction mixture only at the site. The cables can be fed individually or jointly by the various fluids, for which the drive and handle portion 1 corresponding arrangements by means of valves and / or storage container and Einsetzmöglich¬ admixed options for active ingredients are provided. In the head 6, a mixing chamber for the two lines 27 'fabric

The embodiment of FIGS. 9 to 11 shows a further variant. Previously, it was shown that the bristles 12 are directly fixed to the bristle carrier formed as a brush holder 31 and hence the brush holder by pulling the plug latch 9 is pulled out and aufzustecken by appropriately threading via the liquid line 27th There is a risk of bending and Schwierig¬ speeds when plugged in. In addition, a slightly more elaborate brush carrier with bearing and gear is required. Although this is still relatively easy to replace. To reduce the cost of the wear parts 9 to 11 and the variant of FIG However, the bristles are as in the embodiment of FIG.. 11 to 13, 12 in- a designed as an actual brush holder disc 44

OMPI attached. This is non-rotatably on .einem extension 45 of the sleeve 32, but interchangeably fixed. To verdreh¬ secure fixing teeth or, ie in Pig can. 13 darge provides be suitable flats provided. For off draggable axial. Fixing may on the inner surface of the disc 44 two recesses 47 (Fig. 13) may be provided, in the example through an elastic ring 46 Klemm¬ projections of the extension 45 or a small metal spring ring formed into place. The clamping ring 46 is inserted into a circumferential groove of the extension. 5 To facilitate removal of the disc 44 with a replacement of the brush whose circumferential surface is advantageous profiled, for example with circumferential grooves 48 or the like. Provided.

For a good cleaning efficiency without the risk of damage andwith good access to all areas, it is expedient that bristles in different perpendicular to the axis of rotation Plains, play as bei¬ two planes or surfaces of revolution, such as pitch, part ellipsoid, paraboloid or truncated - end to leave. Fig. 12 shows a preferred, beispiels¬ example embodiment in which the bristles 12 are arranged in two rings 49 and 50, wherein the bristles of the outer rim 49 of the inner ring 50 protrude. Due to the difference Liehe length of the bristles 12 of the two rings 49-, 5, the bristles 12 of the inner ring are more rigid and support the bristles of the outer rim 49 during the rotation of the bristle carrier 31, so that a Verzwirbelung of the bristles is avoided to a twisted strand, which could hinder the Plüssigkeits- or medium outlet in the middle space bristle 23rd Possibly. can the bristles of the bieden rings 49, 50 also consist of different materials that are chosen according to various Reinigungs¬ and treatment tasks to be dimensioned and to be disposed.

The cleaning Urig device according to the invention has, besides the Ört- borrowed separation of transmission and fluid coupling 19, two very simple design, replaceable brush parts 2 which are equipped with a particularly intensive cleaning enabling medienzuführenden.Hohlbürste.

The brush section 2 is to switch closure slightly from the driver 1 by the Schnell¬ so it anwend¬ with the ge wished hygiene for more than one person (family) is bar. While brushing exclusively auf¬ pluggable brush section 2 may touch the mucous membranes and lips loaded and not the drive and handle 1, so he has a certain minimum length, the immersion length auf.Weiters ever attachable brush part 2 designed to be extremely cost-effective since it contains only one bevel gear and replaceable bristle discs 44 so that all the parts as disposable suitable for mass production.

OΓΛPI essential parts of the invention can also be described as follows:

The dental cleansing device with electric drive has a drive and grip part with drive motor and possibly switch. In its extension, a removable brush part is disposed. the brush part can be removed by pressing on the pressure ranges of the method mold portion. The brush part carries at its angled head is a hollow brush whose bristles are arranged at the end on a rotating about its axis bristle carrier. The bristles can be between the coronary arranged freely tufts of bristles a central space. The bristle carrier can be formed in which the bristles are arranged in a ring by a kegelradverzahnte externally ge stored in the head of the brush part sleeve, and with a shaft of a

Drive member extending, end kegelradverzahnten drive shaft meshes, wherein the shaft, in a recording channel of the brush part can be inserted, and conducted the Plüssigkeits¬ which is inserted into the wall of the receiving channel for the shaft, can coaxially through contact with its front end the sleeve and open into the enclosed space of the bristles, and exit with its rear end for connection to the drive coming from the part feeder end face of the brush part.

^ ÜREAj OMPI

LIST OF REFERENCE NUMBERS

1 drive and handle portion 27 Plüssigkeitsleitung

2 brush part 27 'line

3 hollow brush 28 annular groove

4 wall 29 Flüssigkeits¬ plug coupling

5 Recording channel

6 head 30 extension

7 bearing portion 31 'bristle carrier

8 annular groove 32 Sleeve ~.

9 locking pin 34 recess

10 Kegelradzahnkranz latch beam 35

11 bearing bore 35.1 resting and Ver¬ shaping part

12 bristle

35.2 'pressure range

13 web

36 latching hooks

14 shaft

37 pump

15 motor

38 Quetschflügel

16 coupling

39 separating or

17 drive shaft protective layer

18 sliding and sealing ring 40 switch

19 bevel gear 42 coaxial annular space

20 Kegelradzahnkranz end portion 43

21 sleeve 44 disk

22 pin 45 port set

23 bristle medium space 46 clamping ring

24 sliding and sealing ring 47 recess

26 outlet opening 48 circumferential groove

49 outer ring

50 inner ring

Claims

Claims :
1. The dental cleansing device with electric drive, with a drive and handle part (1) and having a brush portion (2) which carries the moving of the drive 3 interchangeable brush and in which opens out a in the area of bristles (12) Plüssigkeits¬ line (27) liquid can be fed, characterized in that the brush as a rotating about its axis of rotation-set-up with the end face on the teeth hollow brush (3) arranged with annularly
Bristles (12) is formed.
2. The dental cleansing device as claimed in claim 1 with the electric drive, with a drive and grip part (1) and an in extension of the same adjoining the brush part (2), at the front head (6) a rotationally driven about its Achs.e from the drive brush (3) is arranged, which has a ring shape on a brush holder arranged (31, 44), bristles (12), which in at least one, ending the rotational axis vertical plane or somewhat similar lying concave surface of revolution, such as part-spherical, part-ellipsoid, paraboloid, cone frustum bristle tips um¬ run, the teeth are set up with the end face of the hollow brush and 'being angled to the axis of rotation to the main extension direction of drive and the handle part (1) and the brush part (2) to also areas hardly accessible of the teeth and Zähnfleisches to reach, and wherein, by the drive and the handle part (1) via a liquid line (27), whose outlet opening in the cleaning region of the bristles (12), liquid is fed.
3. The dental cleansing device as claimed in claim 1 or 2, characterized in that the Plüssigkeitsleitung (27) outside of the bristles adjacent to the rotationally driven hollow brush (3) has at least one outlet nozzle.
- ÜREA
OMPI
4. The dental cleansing device according to any one of the preceding Claims characterized in that the liquid line (27) in the space Borstenmittel- (23) is guided and the brush holder of the hollow brush (3) as the sleeve (32) is formed and the
Plüssigkeitsleitung (27) with its front end (43) of the sleeve (32) coaxially penetrates and opens into the enclosed space from the bristles.
5. The dental cleansing device according to any one of the preceding Claims characterized in that at least two fluid conduits (27, 27 ') are provided which can at least in the outlet region, the liquids exit jointly.
6. The dental cleansing device according to any one of the preceding Claims characterized in that the main liquid line (27) by an annular space (42) is surrounded, at least in the opens a further line (27 ') for supplying a further medium.
7- teeth-cleaning device according to claim 6, characterized in that the supply of the further medium is under pressure.
CMPI "VVIIΌ
8. The dental cleansing device as claimed in claim 6, characterized in that the supply of the further medium is aspirated by injector action of the main liquid stream.
9. The dental cleansing device according to any one of the preceding claims, characterized in • that between the outer surface of the
Sleeve (32) passing through the front end (43). the Plüssigkeitsleitung (27) and the inner wall of the sleeve (32) an annular space (42) is formed of a connecting channel to the bottom area of ​​the bearing bore (11), in which at least one further line (27 ') opens for the supply of medium.
10. The dental cleansing device, in particular according to one of the preceding claims, characterized in that on its axis driven in rotation Hohl¬ brush (3) is mounted removable on one of the drive and the handle part (1) The brush section (2) and (between the input and grip part 1) and the brush part (2) releasable coupling means are provided, said at least one clutch (releasable bevel gear 19) in the rotating drive and latching parts (latching hooks 36 and latching webs 35) for the Pesthalten include.
11. The dental cleansing device as claimed in claim 10. 3 characterized in that engaging on the brush part in recesses (34) in the drive and the handle part (1) are provided latching hook behind locking webs
(35) engage, which are formed on a latching and Verformungs¬ part (35.1), which is a thin-walled termination of the drive and the handle part (1) is formed and aus¬ which marked print areas (35.2), such that upon depression of the pressure ranges (35.2) auf¬ widen the locking webs (35) having deformation regions.
12. The dental cleansing device, in particular according to one of the preceding claims, characterized in that the drive and the handle part (1) supported and rotating by the motor driven (15) drive shaft (17) in one of the drive and the handle part (1) in the main extension direction is mounted protruding stem (14) and a sleeve at its front end (21), which has a Kegelradzahnkranz (20) connected to a Kegelradzahnkranz (10) on the brush carrier (31) which in the brush part (2) for Haupt¬ extending direction is rotatably bent, comes into engagement.
13. The dental cleansing device according to any one of the preceding claims, characterized in that the removable brush holder (2) is elongated designed with at least the total insertion length of the Reinigungs¬ implement portion in the mouth.
14. The dental cleansing device according to any one of the preceding claims, 0 characterized in that the brush carrier (2) on a .the shaft. (14) matching the receiving channel, and a thin wall (4) auf¬ has whose outer boundary is substantially zylin¬ thresh and in the area of ​​connection to the drive 5 and the handle part (1) widens conically.
15. The dental cleansing device according to any one of the preceding claims, characterized in Q that the Plüssigkeitsleitung (27) and optionally the further line (27 ') substantially parallel to the central receiving channel (5) for the shank (14) of the drive and the handle part (1 ) vorzusgweise in the wall (4) of the receiving channel (5) is inserted / are.
16. The dental cleansing device according to any one of the preceding claims, characterized in that the portion of Plüssigkeitsleitung (27) is 5 in the brush part (2) via a plug-in coupling (29) with the portion of Plüssigkeitsleitung (27) in the drive and grip part (1).
17. The dental cleansing device as claimed in claim 16, _0 characterized in that the Plüssigkeitsleitung (27) is in the area of ​​coupling (29) opposite to the terminal end face of the brush part (2) is reset, and in an extension (30) for receiving the the '5 seal having coupling part at the drive input and handle part (1) ends.
18. The dental cleansing device according to any one of the preceding claims, 0 characterized in that the drive and the handle part (1), see vorge a pump (37) for feeding the liquid line (27).
5 19- The dental cleansing device as claimed in claim 18, characterized in that the pump is a, preferably coupled to the drive shaft (17) of the rotating drive or detachable hose; 'hpumpe (37).
20. The dental cleansing device according to any one of the preceding claims, characterized in that the bevel gear (10) of the brush holder (31) adjoins a tapered support portion (7) in the bearing bore (11) of the head (6) of the brush part (2) outside is mounted and axially secured fest¬ by a radially insertable locking pin (9).
21. The dental cleansing device according to any one of the preceding claims, characterized in that the brush carrier is divided into a wheel part storage and Kegel¬ with the Kegelradzahnkranz (10) and an actual bristle carrier, which can be plugged in a rotationally connected to each other.
22. The dental cleansing device as claimed in claim 21, characterized in that the bristle carrier as a substantially flat, provided with a central opening disc (44) on which the bristles are fastened, is formed.
23. The dental cleansing device according to any one of the preceding claims, characterized in that the sleeve (32) for fixing the disc (44) has a flattened coaxial extension (45) auf¬ has, which is provided with at least one radially yieldable protrusion in at least one of ¬ recess (47) of the corresponding axial Scheiben¬ surface engages.
24. The dental cleansing device as claimed in claim 23, characterized in that the projection by a in a groove of the Porsatzes (45) loaded elastic ring (46) is formed.
25.- teeth-cleaning device according to any one of the preceding claims, characterized in that the outer end face of the bristles (12) carrying disc (44) grooves for example, by circumferential (48) is profiled.
26. The dental cleansing device, in particular according to one of the preceding claims, characterized in that the tips of the bristles (12) in different
Distance from the brush holder (31, 44) end.
27, tooth cleaning Obergurig apparatus according to claim 26, characterized in that at least two rings (49, 50) of bristles (12) on the sleeve (32), the bristle carrier (31) or the disc (44) are arranged, wherein the
Bristles (12) at least one outer ring (49) over those of at least one inner ring (50). protrude.
28. The dental cleansing device as claimed in claim 27, characterized in that the projection of the outer bristles up to about half the length of the bristles (12) of the inner ring (50) is.
29. The dental cleansing device according to any one of the preceding claims, characterized in that the bristles (12) at an angle between 5 ° and .30 °, preferably between 15 ° and 20 ° to the
Axis of rotation of the hollow brush (3) and the axis of the sleeve (32) projecting outwards.
OM
EP19840900281 1982-12-24 1983-12-23 Tooth cleaning apparatus Withdrawn EP0129585A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AT4683/82 1982-12-24
AT468382 1982-12-24
AT275283 1983-07-28
AT2752/83 1983-07-28

Publications (1)

Publication Number Publication Date
EP0129585A1 true EP0129585A1 (en) 1985-01-02

Family

ID=25599021

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840900281 Withdrawn EP0129585A1 (en) 1982-12-24 1983-12-23 Tooth cleaning apparatus

Country Status (6)

Country Link
US (1) US4619009A (en)
EP (1) EP0129585A1 (en)
JP (1) JPS60500280A (en)
AU (1) AU2415184A (en)
DE (1) DE3346758A1 (en)
WO (1) WO1984002453A1 (en)

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JPS60500280A (en) 1985-03-07
AU2415184A (en) 1984-07-17
US4619009A (en) 1986-10-28
DE3346758A1 (en) 1984-07-05
WO1984002453A1 (en) 1984-07-05

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