EP0129585A1 - Appareil pour le nettoyage des dents - Google Patents

Appareil pour le nettoyage des dents

Info

Publication number
EP0129585A1
EP0129585A1 EP84900281A EP84900281A EP0129585A1 EP 0129585 A1 EP0129585 A1 EP 0129585A1 EP 84900281 A EP84900281 A EP 84900281A EP 84900281 A EP84900281 A EP 84900281A EP 0129585 A1 EP0129585 A1 EP 0129585A1
Authority
EP
European Patent Office
Prior art keywords
brush
drive
cleaning device
tooth cleaning
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Withdrawn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
EP84900281A
Other languages
German (de)
English (en)
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 SE
Original Assignee
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
Application filed by Duerr Dental SE filed Critical Duerr Dental SE
Publication of EP0129585A1 publication Critical patent/EP0129585A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/02—Rinsing or air-blowing devices, e.g. using fluid jets or comprising liquid medication
    • A61C17/0202—Hand-pieces
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/16—Power-driven cleaning or polishing devices
    • A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
    • A61C17/24—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like rotating continuously
    • A61C17/26—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like rotating continuously driven by electric motor
    • A61C17/28—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like rotating continuously driven by electric motor with rinsing means

Definitions

  • the invention relates to a tooth cleaning device with an electric drive, with a drive and handle part and with a brush part, which carries the interchangeable brush moved by the drive, and in which liquid can be supplied via a liquid line leading into the area of the bristles.
  • a large number of tooth cleaning devices in the form of electrically driven, mechanically movable toothbrushes and liquid supply devices are known.
  • 3,822,432 equipped with a flexible shaft has a similar dry, rotating rubber cleaning head or a roller brush, with which you can not get into hard-to-reach areas of the teeth and gums.
  • attachment units with rotating brushes and deformation bodies such as, for example, according to US Pat . No. 2,093,007 . which, however, are not designed and suitable for the daily teeth cleaning of the user.
  • a device for rinsing and massaging the gums is also shown in DE-OS 29 01 13 ⁇ , according to which a massage tool made of rubber is oscillatingly driven via a swash plate, and the outside area of the massage tool is expelled by a central line in the rotary drive the handle part is fed.
  • the liquid line serves as a bearing for the drive shaft in the entire area of the cleaning part, with the two couplings ... (liquid and gear coupling) directly next to each other in the area of the mechanical coupling between the drive part and cleaning part
  • the invention is based on the aforementioned prior art and its claims 1 and 2 are formulated in particular on the basis of DE-OS. 16 57 287.
  • This arrangement and essential parts of the invention have in common that. it is a tooth cleaning device with electric drive, with drive and handle part and with one
  • Brush part acts, which carries the replaceable brush moved by the drive and in which liquid can be supplied via a liquid line opening in the region of the bristles.
  • the liquid is fed centrally between the bristles of a toothbrush that swings back and forth with a nozzle serving as a spray device.
  • a frustoconical radiation guide jacket made of soft, elastic material can be provided.
  • the toothbrush is not driven electro-mechanically but by a compressed air vibration drive.
  • Tooth cleaning device in which a conventional electric toothbrush with an oscillating drive of the brush part has a liquid line that enters the rear of the brush part from the outside and can be coupled to a storage container, which branches into three channels in the bristle holder, via which the Liquid is sprayed approximately parallel to the bristles.
  • a storage container which branches into three channels in the bristle holder, via which the Liquid is sprayed approximately parallel to the bristles.
  • the object of the invention is therefore essentially to design a tooth cleaning device of the type mentioned at the outset in such a way that, despite the supply of at least one medium, the bristles move in the same direction, with simple replacement of the brush parts being retained or This should be made possible so that a dental cleaning device of the type mentioned at the outset can be improved in its overall cleaning effect while functioning reliably and the handling for the user can be considerably simplified.
  • a rotating front toothbrush is now combined with a liquid supply.
  • this can be characterized in the illustration above all by the fact that in the case of a tooth cleaning device with an electrically moving, interchangeable one
  • Brush and in the area of the bristles the liquid conducts the brush as a revolving around its axis of rotation the end face of the hollow brush to be placed on the teeth is designed with bristles arranged in a ring.
  • Dental cleaning device with electric drive with a drive and handle part and an extension of the adjoining brush part, on the front head of which a brush is rotated about its axis and driven by the drive, which has bristles arranged on a brush holder, the bristles of which at least one plane perpendicular to the axis of rotation or - approximately similarly lying concave rotation surface, such as " partial sphere, partial ellipsoid, paraboloid, truncated cone, ending around bristle tips, which are to be placed on the teeth with the end face of the hollow brush and the axis of rotation toward Main direction of extension of the drive and handle part and brush part is angled in order to reach even hard-to-reach areas of the teeth and gums, and liquid can be supplied through the drive and handle part via a liquid line, the outlet opening of which lies in the cleaning area of the bristles.
  • the toothbrush usable liquid supply in a single hand-held device now enables optimal cleaning of the teeth in that, on the one hand, the bristle tips cannot remain on the tooth surface to be cleaned, even if they are unsuitable for use, which is what
  • the main disadvantage of the vibrating toothbrush systems is, but are forced to be moved over the tooth surface and that optionally, during the rotating toothbrush treatment also liquid, either only water or water with other media for the treatment of the tooth.
  • Surface and / or the gums can be supplied, but that on the other hand, even without driving the toothbrush, liquid can either be distributed or supplied in a targeted pulsed jet without any parts on the toothbrush having to be replaced.
  • the Plüsstechniks ⁇ line outside of the bristles adjacent to the rotationally antreib ⁇ cash hollow brush having at least an outlet nozzle, as is similarly known for vibrating toothbrushes. Then you are not dependent on the central feed in the inner conception of the drive and can
  • the liquid line can be led into the bristle center space and the brush holder of the hollow brush can be designed as a sleeve and the
  • the liquid line penetrate the sleeve coaxially and open into the space enclosed by bristles.
  • the cleaning liquid is then fed to the center of the treatment and can be held together well by the bristles even when operated together.
  • the cable routing can contribute to centering and there is a clear structure.
  • At least two liquid lines can be provided, which allow the liquids to exit together at least in the outlet area.
  • the device can carry out a wide variety of cleaning and
  • the main liquid line can be surrounded by an annular space into which at least one further line for supplying a further medium opens. Mixing only takes place immediately before the treatment and a reactive mixture can be brought together directly at the treatment site.
  • the • additional medium can be supplied under pressure if the treatment makes sense . appears, this pressure can be generated inside or outside the device. According to another embodiment, however, the supply of the further medium can also be sucked in by the main liquid flow by the action of an injector. Then additional pressure sources or valves for the supply and pressure generation are not required.
  • a very easy to produce and functional solution to achieve a rotating hollow brush with a liquid supply can be achieved in particular that an annular space is formed between the outer lateral surface of the front end of the liquid line passing through the sleeve and the inner wall of the sleeve, which provides a connecting channel to the bottom area of the Bearing hole forms, into which at least one further line for supplying medium opens.
  • the mixing for example to produce a reaction mixture of the two media, can take place as close as possible to the place of use.
  • the mixing for example to produce a reaction mixture of the two media, can take place as close as possible to the place of use.
  • a rotating hollow brush with cone drive can already be found in GB-OS 2 008 939 A.
  • the brush part is not interchangeably arranged on the drive part and no liquid supply is dealt with with the resulting special design problems.
  • the holding coupling can advantageously be designed in such a way that latching hooks which engage in recesses in the drive and handle part are provided on the brush part and engage behind locking webs which are formed on a latching and deformation part which is formed as a thin-walled closure of the drive and handle part and which has marked pressure areas such that when the pressure areas are depressed the deformation areas having the locking webs widen.
  • Such a coupling can by injection molding and easily be manufactured inexpensively and is'
  • a particularly favorable solution for the interchangeable coupling of the rotating hollow brush and the favorable mounting of both the drive shaft and the brush part provides that the rotating and driven motor shaft driven and driven in the drive and handle part in one by the drive - And handle part in the main direction of extending shaft is mounted, and carries at its front end a sleeve which has a bevel gear ring, which comes into engagement with a bevel gear ring on the brush holder, which is angled in the brush part to the main direction of extension.
  • Such an embodiment which is expedient even for multi-person toothbrushes without the addition of excess liquid, permits a very simple design of the brush part and the mounting of the brush holder, so that inexpensive mass parts can be designed, and so a very simple, easy result Generating and functional solution to achieve a circular hollow brush for several people with a basic device, the drive being separated when changing in the head.
  • the removable brush holder is expediently elongated with at least the entire immersion length of the cleaning device part in the mouth. It expediently has a receiving channel fitting on the shaft and a thin wall, the outer boundary of which in Close to the drive and handle part is flared.
  • the section of the liquid line in the brush part is connected to the section of the liquid line in the drive and handle part via a plug-in coupling.
  • This is designed as a multiple coupling for several lines.
  • the liquid line or the liquid lines are expediently set back in the area of the coupling with respect to the connecting end face of the brush part and end in an extension for receiving the coupling part having the seal on the drive and handle. In this way, identical brush parts can be used for toothbrushes with and without liquid supply in order to rationalize mass production.
  • Gear coupling on the one hand and holding parts and fluid coupling on the other hand are spatially far apart from one another and are therefore easy to seal against one another without interference.
  • an external pump operating in a table or wall-mounted device in the manner of an oral irrigator or a pump in the drive and handle part can be provided.
  • a pump in the drive and grip part is preferably coupled or can be coupled to the drive shaft of the rotating drive.
  • a particularly simple construction of the tooth cleaning device according to the invention also results from the storage of the bristle carrier.
  • a tapered bearing section adjoins the bevel gear toothing of the brush holder, which is mounted on the outside in the bearing bore of the head of the brush holder and is axially fixed by a radially insertable locking bolt.
  • Such storage is for tooth cleaning devices.
  • a one-piece element can be formed as an exchange brush, which can be designed as an inexpensive disposable part if the bevel gear tooth materials have sufficient strength for the service life of the brush.
  • a particularly expedient design provides that the brush holder is divided into a bearing and bevel gear part with the bevel gear ring and an actual bristle holder, which are connected to one another in a non-rotatable manner.
  • the bristle carrier can be designed as an essentially flat disc with a central opening, to which the bristles are attached. Such a toothbrush can also be used for cleaning devices without liquid supply and with liquid supply. This also applies to the brushes integrated with the bevel gear.
  • the sleeve for pixelizing the disk can have a flattened coaxial port set which is provided with at least one radially flexible projection which snaps into at least one recess in the corresponding axial disk surface.
  • the projection can advantageously be formed by an elastic ring inserted into a groove in the port set.
  • the outer end face of the disk carrying the bristles can be profiled, for example, by circumferential grooves or the like.
  • Brush as such and in particular on the selection of the bristles and the design of the bristle tips. These are rounded off for gentle cleaning and massage. It can be particularly expedient according to the invention that the tips of the bristles end at different distances from the brush holder, because they can then be adapted particularly well to the anatomy and, above all, make it easier to reach tooth pockets and interdental spaces. The ends can be on different areas already mentioned above. A particularly good cleaning effect can be achieved if at least two rings of bristles are arranged on the sleeve, the bristle carrier or the disk, the bristles of at least one outer ring projecting over those of at least one inner ring, so that a step brush is used results in which the bristles, however, support each other.
  • the protrusion of the outer bristles from the inner bristles can be up to approximately half the length of the bristles of the inner ring.
  • the bristles are expediently inclined at an angle between 5 ° and 30 °, preferably between 15 ° and 20 ° to the axis of rotation of the hollow brush or sleeve axis.
  • the inner bristles can be used to clean a tooth corner and the outer bristles in the interdental spaces, and there are good supporting and nevertheless individual cleaning effects even in places that are difficult to access.
  • the hollow brushes of the above type have particularly good cleaning effects between 2500 and 300. Revolutions per minute, preferably between 1,000 and 500 revolutions per minute, if the hollow brush inner diameter is between 5 and 10 mm. A lower speed improves the penetration of the bristles into the interdental spaces, while high speeds improve the cleaning performance.
  • the invention essentially has three aspects which, both individually and in the possible combinations with one another, offer particular advantages and inventions represent a combination of a rotating hollow brush working with the end face with the supply of liquids, with the possibility of supplying liquids outside and / or in the center and with a liquid line which opens essentially parallel to the bristles and which extends in the longitudinal direction in the brush part and options for a plurality of liquids which can be used individually and combined.
  • a simple construction of the replacement brush part and a solid mounting of the drive shaft and a simple, safe, mechanical drive are achieved despite separation.
  • Fig. 1 The view of a tooth cleaning device
  • Fig. 2 shows a longitudinal section through the front part of the drive and handle part with the subsequent shaft, the lower half in the drive: and handle part with respect to the housing and locking and deformation part - cut with respect to the inner parts of the motor, clutch, and cover "is shown in view.
  • Fig. 3 shows a longitudinal section through a brush part attachable to the shaft.
  • Fig. 4 shows an enlarged partial longitudinal section through the
  • FIG. 5 shows a longitudinal section through a tooth cleaning device in a second embodiment
  • Pig. 6 shows a longitudinal section through the brush part of the device according to FIG. 5;
  • Fig. 10 is an enlarged cross section along the line 10-10 in Fig. 9;
  • Pig. 11 is an end view of the brush part according to FIGS.
  • Figure 12 is a longitudinal sectional view of a brush head similar to Figure 7, but with stepped brush and some variants..;
  • 25th Pig. 1 shows the external view of a tooth cleaning device . it, as it essentially corresponds to all of the exemplary embodiments shown below.
  • a tooth cleaning device has a drive and grip part 1 and an adjoining one in an extension thereof
  • Brush part 2 on which a rotating hollow brush 3 is arranged on the brush head 6 angled to the main direction of extension of drive and grip part 1 and brush part 2.
  • the free brush center space 23 can be seen.
  • An electric drive motor 15 (FIGS. 2 and 5) is arranged in the drive and handle part 1. It can be supplied with current by a rechargeable accumulator built into the handle part or by an electrical connecting cable 33 (FIG. 5).
  • the front region of the drive and grip part is designed to be thin-walled as a latching and deforming part 35.1 with marked pressure regions 35.2.
  • 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 hollow brush 3 mounted on an attachable brush part 2.
  • a hollow shaft . 14 (FIGS. 2 and 5), in which a drive shaft 17 connected to the motor 15 via a coupling 16 is rotatably mounted.
  • the front end protruding from the shaft 14 the drive shaft 17 is equipped with a sleeve 21 having a bevel gear ring 20, which is fastened by means of a pin 22 which penetrates the drive shaft 17 diametrically (FIG. 4).
  • a sliding and sealing ring 18 is inserted into an annular groove 28 of the drive shaft 17 between the sleeve 21 and the front end of the shaft 14.
  • the brush part 2 has a coaxial receiving channel 5.
  • the wall 4 of the brush part 2 is cylindrical over a large part of the length and widens conically for connection to the drive and handle part 1.
  • latching hooks 36 are provided, which can be inserted into recesses 34 of the drive and handle part 1 and engage behind locking webs 35 arranged there in a resilient manner.
  • the locking webs 35 are integrally formed on a thin-walled, front, conical latching and deforming part 35-1 and widen slightly under lateral pressure on the marked pressure areas 35.2 and release the latching hooks 36 of the brush part 2 so that it is pulled off the shaft 14 can be.
  • the brush part 2 At the free end of the brush part 2, its head .6 is angled by 90 ° to the main direction of extension and equipped with a hollow brush 3.
  • the bristles 12 are arranged in a ring or ring shape on a bristle carrier at the end protruding therefrom and a bristle center space 23 remains free.
  • the bristle carrier 31 is designed as a sleeve 32.
  • the brush is thus designed as a rotary brush that rotates around the axis of rotation and is placed on the teeth with the end face, in which the bristle tips are located in a plane perpendicular to the axis of rotation or a concave rotational surface of approximately the same type, such as a part ball, part ellipsoid, paraboloid, truncated cone, end up.
  • the bristles can also end in several planes or areas. Their ends are to be designed to be suitable for the treatment, so that they enable good cleaning but do not cause any injuries, in particular on the gingiva, that is to say preferably round them off.
  • the head is used to hold the hollow brush 3 . 6 is provided with a bearing bore 11 which is arranged perpendicular to the receiving channel 5.
  • the two blind bores (receiving channel 5, bearing bore 11) do not completely merge into one another, but are largely separated by a web 13.
  • the bearing bore 11 forms an outer bearing for a tapered bearing section 7 of the brush holder designed as a bristle holder 31 in this exemplary embodiment. It is provided with a bevel gear ring 10, in whose teeth the bevel gear ring 20 of the sleeve 21 of the drive shaft 17 engages.
  • the bearing bore 11, which is expanded to accommodate the ring gear 10, is in the latter See the area with a breakthrough in the receiving channel 5.
  • the bearing section 7 carries an annular groove 8, into which a locking bolt 9 is radially inserted, which is anchored in the head .6.
  • the sleeve 32 of the hollow brush 3 is thus easily exchangeably held axially immovably in the head 6.
  • Such or similar mounting of the brush holder with bevel gear teeth and engagement in the bevel gear of the drive is common to all of the illustrated exemplary embodiments.
  • the axes of rotation are angled at 90 ° to one another. Depending on the design of the brush and the other conditions of the device, an angle other than 90 ° can also be selected.
  • FIGS. 5 shows yet additional supply of liquid into the washing area of the bristles, specifically here in Brad ⁇ ferred embodiment in the bristle medium space 23 of the hollow brush 3, ie directly at the point of use.
  • the brush holder is here also designed as a direct bristle holder 31 and together with the bearing section 7 constitutes a sleeve 32 through which the bent end section of a liquid line 27 is guided axially into the brush center space 23.
  • the bristle carrier 31 has an enlarged outlet opening 26 in which a sliding and sealing ring 24 surrounds the end of the liquid line 27 and is fixed by an insert sleeve 25.
  • the liquid line 27 can in particular be a hose made of rubber or suitable plastic, but also a thin metal tube.
  • the liquid line is continuous and opens axially within the bearing bore 11 in the enlarged outlet opening 26. From the bearing bore 11, the liquid line 27 subsequently extends parallel to the receiving channel in the wall 4, into which it is inserted and ends in an extension 30 in the connection area of the brush part 2, which lies within the end face. In the extension 30, the end of the liquid line protrudes as a fluid coupling 29, as shown, inter alia, in FIG. 6, so that the line end is in a, in a housing recess in the head of the drive and handle; Part 1 arranged coupling sealing ring can be inserted, as illustrated in FIG. 5.
  • the liquid line 27 extends further through the drive and grip part in all of the exemplary embodiments with a liquid supply and can be designed there in various ways. 5 it enters the rear end of the drive and handle part 1 and extends longitudinally through the same. It can be supplied from the outside or drive and storage means for liquids can be provided on the inside.
  • the fluid coupling 29 is approximately the length of the
  • Locking hook 36 By moving the end of the line back behind the end face and the fact that the rest of the structure of the brush part 2 according to FIG. 6 corresponds entirely to that of FIG. 3, the brush part with the liquid line 27 can also be easily connected to a drive and handle part 1 according to Pig. 2, where no liquid supply is provided.
  • the total length of the brush part is at least as long as the immersion length in the mouth in order to reach the rear teeth well and not to let the drive and handle part come into contact with the lips and mucous membranes.
  • the liquid supply can be implemented in various ways.
  • a drive and handle part 1 with a liquid supply is provided with a hose pump 37, which has two pinch wings 38 arranged on the drive shaft in a helical manner.
  • the squeeze wings 38 continuously squeeze the liquid line 27 from the back to the front, so that the liquid sucked in from the outside is continuously passed on to the hollow brush 3.
  • a protective layer 39 is provided to protect the liquid line 27.
  • the electric drive motor 15, which carries the hose pump 37, is arranged in the drive and handle part 1 following the hose pump 37.
  • Drive shaft 17 drives directly.
  • the area accommodating the motor 15 is, however, in pig.
  • the hose line 27 can be immersed in a container containing the cleaning liquid, from which the liquid is conveyed by the self-priming hose pump 37.
  • a reservoir could also be provided in the drive or grip part 1.
  • the electrical supply can also take place via a rechargeable accumulator, so that the line 33 is omitted.
  • the pump can be designed differently and can be coupled and uncoupled or can be omitted entirely and 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 Lürabschnit 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 theticians ⁇ described so far, the Interior of the bristle carrier fully as shown in FIGS. 3 and 4 or hollow as shown in FIGS. 5, 6 and 7 can be designed.
  • liquid supply is likewise provided in a manner similar to that described above.
  • the same parts are provided with the same reference numerals.
  • two further lines 27 ′ are inserted in the wall 4 of the brush part 2 parallel to the liquid line 27, which through the web 13 in the bottom region of the Bearing bore 11 open, media supplied via lines 27 'pass from the bottom area of bearing bore 11 through an annular space 42 coaxial to end section 43 of fluid line 27 through sleeve 32 into central bristle space 23.
  • FIGS. 9 to 11 shows a further variant.
  • the bristles 12 are fastened directly to the brush holder designed as a bristle holder 31 and thus the brush holder can be pulled out by pulling the locking bolt 9 and plugged in via the liquid line 27 by appropriate threading.
  • the locking bolt 9 There is a risk of bending and difficulty when inserting.
  • a somewhat more complex brush holder with a bearing and sprocket is required. This is also relatively easy to replace.
  • the bristles 12 are in a disk 44 designed as an actual brush holder
  • OMPI attached. This is rotatably fixed on an extension 45 of the sleeve 32, but is exchangeably fixed. Teeth or, ie in Pig. 13 Darge ⁇ , suitable flattenings are provided. For removable axial. Fixation can be provided on the inner surface of the disc 44, two recesses 47 (FIG. 13), into which, for example, projections of the extension 45 formed by an elastic clamping ring 46 or a small metal spring ring engage. The clamping ring 46 is inserted in a circumferential groove of the extension 5. For easier removal of the disk 44 when the brush is replaced, its peripheral surface is advantageously profiled, for example provided with peripheral grooves 48 or the like.
  • FIG. 12 shows a preferred embodiment, for example, in which the bristles 12 are arranged in two rings 49 and 50, the bristles of the outer ring 49 projecting beyond those of the inner ring 50.
  • the bristles 12 of the inner ring are stiffer and support the bristles of the outer ring 49 during the rotation of the bristle carrier 31, so that swirling the bristles to a twisted strand is avoided, which could hinder the liquid or medium from escaping into the bristle center space 23. Possibly.
  • the bristles of the double rings 49, 50 can also consist of different materials which are to be selected, dimensioned and arranged in accordance with the various cleaning and treatment tasks.
  • the cleaning device according to the invention has extremely simple, replaceable brush parts 2, which are equipped with a hollow brush that enables particularly intensive cleaning.
  • the brush part 2 can be easily changed from the drive part 1 by the quick-release fastener, so that it can be used for several people (family) with the desired hygiene.
  • the plug-on brush part 2 may touch the mucous membranes and lips and not the drive and handle part 1, so it has a certain minimum length, the immersion length.
  • each plug-on brush part 2 is designed extremely cost-effectively, since it contains only one bevel gear toothing and exchangeable bristle disks 44, so that they are all suitable as disposable parts for mass production.
  • O ⁇ PI Essential parts of the invention can also be described as follows:
  • the tooth cleaning device with electric drive has a drive and handle part with a drive motor and, if necessary, a switch.
  • a removable brush part is arranged in its extension.
  • the brush part can be removed by pressing on the pressure areas of the deformation part.
  • the angled head of the brush part carries a hollow brush, the bristles of which are arranged on the end face of a bristle carrier which rotates about its axis.
  • the bristles leave a bristle center space between the tufts arranged in a ring.
  • the bristle carrier can be formed by a bevel gear toothed sleeve, which is mounted on the outside in the head of the brush part, in which the bristles are arranged in a ring shape and which is connected to a shaft of the

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  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Brushes (AREA)

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). Sur son prolongement est disposée une partie brosse amovible (2). On enlève la partie brosse (2) en appuyant sur les zones de pression (35.2) de la partie de déformation (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. Les soies laissent un espace central libre (23) entre les touffes disposées en couronne.
EP84900281A 1982-12-24 1983-12-23 Appareil pour le nettoyage des dents Withdrawn EP0129585A1 (fr)

Applications Claiming Priority (4)

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

Publications (1)

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

Family

ID=25599021

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84900281A Withdrawn EP0129585A1 (fr) 1982-12-24 1983-12-23 Appareil pour le nettoyage des dents

Country Status (6)

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

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US4827552A (en) * 1988-03-14 1989-05-09 Better Health Concepts, Inc. Rotary electric toothbrush
JP2761234B2 (ja) * 1989-02-17 1998-06-04 株式会社泉精器製作所 電動歯ブラシ
US5146643A (en) * 1989-08-31 1992-09-15 Professional Dental Technologies Corporation End brush with male projection
GB2237505A (en) * 1989-10-16 1991-05-08 W H Mandolyn International Lim Powered brush
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US4619009A (en) 1986-10-28
WO1984002453A1 (fr) 1984-07-05
AU2415184A (en) 1984-07-17
DE3346758A1 (de) 1984-07-05
JPS60500280A (ja) 1985-03-07

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