EP0205742A1 - Brosse à dents munie d'un réservoir - Google Patents

Brosse à dents munie d'un réservoir Download PDF

Info

Publication number
EP0205742A1
EP0205742A1 EP86102023A EP86102023A EP0205742A1 EP 0205742 A1 EP0205742 A1 EP 0205742A1 EP 86102023 A EP86102023 A EP 86102023A EP 86102023 A EP86102023 A EP 86102023A EP 0205742 A1 EP0205742 A1 EP 0205742A1
Authority
EP
European Patent Office
Prior art keywords
handle
filling
toothbrush according
storage space
filling toothbrush
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.)
Granted
Application number
EP86102023A
Other languages
German (de)
English (en)
Other versions
EP0205742B1 (fr
Inventor
Michael Dr. Hertrampf
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.)
Individual
Original Assignee
Individual
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 claimed from DE19858516991 external-priority patent/DE8516991U1/de
Priority claimed from DE19853523891 external-priority patent/DE3523891C2/de
Application filed by Individual filed Critical Individual
Priority to AT86102023T priority Critical patent/ATE42028T1/de
Publication of EP0205742A1 publication Critical patent/EP0205742A1/fr
Application granted granted Critical
Publication of EP0205742B1 publication Critical patent/EP0205742B1/fr
Expired legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B11/00—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water
    • A46B11/001—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water with integral reservoirs
    • A46B11/002—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water with integral reservoirs pressurised at moment of use manually or by powered means
    • A46B11/0058—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water with integral reservoirs pressurised at moment of use manually or by powered means with a metered dosage
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B5/00—Brush bodies; Handles integral with brushware
    • A46B5/02—Brush bodies; Handles integral with brushware specially shaped for holding by the hand
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B2200/00—Brushes characterized by their functions, uses or applications
    • A46B2200/10—For human or animal care
    • A46B2200/1066—Toothbrush for cleaning the teeth or dentures

Definitions

  • the invention relates to a filling toothbrush mentioned in the preamble of claim 1.
  • Filling toothbrushes are known from QE-PS 144 302 and DE-GMS 1 929 029, which have a rubber cap that can be pressed in at the end of the handle, by means of which pressure can be exerted on the interior of a storage space. This is intended to push the contents of the storage space through a channel to the area of the bristles.
  • QE-PS 144 302 and DE-GMS 1 929 029 which have a rubber cap that can be pressed in at the end of the handle, by means of which pressure can be exerted on the interior of a storage space. This is intended to push the contents of the storage space through a channel to the area of the bristles.
  • there are no valves so that a defined delivery effect cannot arise.
  • the invention has for its object to avoid the disadvantages of the known filling toothbrushes, that is to create a filling toothbrush that is simple in construction and allows the delivery of defined amounts of tooth cleaning agent in a safe manner.
  • the teaching according to the invention provides only one valve. Nevertheless, there is a pumping effect in connection with the delivery resistance in the channel from the storage space to the outlet opening and the fact that the valve is open when the volume changing device is not actuated. This means that the dentifrice can reach the area of the volume-changing device largely without resistance, while it is difficult for the tooth-cleaning agent to flow back due to the conveying resistance in the channel from the storage space to the outlet opening.
  • the valve closes, so that the dentifrice is conveyed from the volume change device through the channel to the outlet opening.
  • volume change device If the volume change device returns to its idle state, so that the volume between the valve and the channel increases, then dentifrice flows through the open valve into the area of the volume change device, while a back flow of the dentifrice from the channel is largely prevented by the delivery resistance therein.
  • the use of only one valve greatly simplifies the filling toothbrush, so that the manufacturing price is extremely low.
  • the valve is designed as a flap or disc, which lie against a corresponding seat when the valve is closed.
  • the flap and valve are not loaded in the closing direction, so that they remain open when the filling toothbrush is placed on the base due to the force of gravity, so that tooth cleaning agents can flow through without any hindrance.
  • the flap, the disc or the like, together with a cap which closes the bottom of the storage space can consist of a piece of flexible plastic. This cap is simply pressed into the part of the handle that is open at the bottom. This closes the storage room.
  • the cap also forms the volume change device. By pressing the cap, the area above it is reduced in volume.
  • the valve seat for the flap or the disk is simply formed by the lower edges of the storage space.
  • the flap or the disk expediently extends essentially over the entire cross section of the lower region of the storage space. As a result, the delivery resistance for the dentifrice is particularly low.
  • the stroke of the flap or disc can be relatively small due to the large cross section.
  • a further possibility of designing the valve is characterized in claim 3.
  • the teaching of this claim is based on the basic idea of designing the piston itself as a valve.
  • the V-shaped lip seal lies tightly against the inner wall of the cylinder when actuated, so that the entire lip seal acts as a tight piston when moving.
  • the V-shaped lip seal narrows, so that a gap is created between the edges of the lip seal and the cylinder wall, through which tooth cleaning agents flow or are squeezed from the back of the lip seal to the side lying in the conveying direction can.
  • This process presupposes a sufficient flow resistance of the liquid or paste to be pumped, which is however always present and of course depends on the viscosity of the liquid to be pumped.
  • the flow resistance is created, in particular, by the channel to the outlet opening located behind the lip seal in the flow direction det, the flow resistance can also be adapted by appropriate dimensioning of the channel. If necessary, additional flow resistances, for example in the form of constrictions, can also be installed.
  • the lip seal can be located on a piston, the diameter of which is smaller than the diameter of the cylinder, so that a sufficient flow channel is formed through which liquid or paste-like tooth cleaning agent can flow when the piston returns from its actuation stroke.
  • a further development of the invention is particularly expedient, according to which the V-shaped lip seal completely forms the piston, a piston rod extending from the tip of the V to the actuating member.
  • Lip seal and piston rod and possibly also the actuator can consist of one piece of plastic, so that there is a particularly cheap construction.
  • the actuator can consist of a piston which is slidably arranged in a cylindrical filling opening for the storage space of the filling toothbrush and is biased outwards by a compression spring against the direction of actuation.
  • the actuating member is an elastic cap which bulges outwards in a spherical shape and can be actuated with a finger.
  • Piston and return spring thereby form a single component, which can also be made in one piece with the lip seal and, if necessary, with an intermediate piston rod.
  • the entire filling toothbrush can be constructed practically from two parts, namely a part which forms the handle and the handle, and a part which forms the actuator, piston rod and piston.
  • the price of such a filling toothbrush can be kept so low that it hardly exceeds the price of a normal toothbrush and an associated toothpaste tube. Only such a low price - creates the possibility of a widespread introduction of such a filling toothbrush into practice, which is desirable for dental reasons, because after a time predetermined by the filling quantity, the user is encouraged to throw the toothbrush away and to buy a new one. He is therefore not tempted to use toothbrushes that are too old for medical reasons.
  • the actuator e.g. the elastic cap
  • the outstanding parts e.g. can be tubular, can at the same time form a base for setting up the toothbrush, so that it is ensured that the tooth cleaning agent in the storage space always sinks down into the area of the piston / cylinder arrangement, so that a uniform emptying of the storage space is ensured regardless of the filling quantity is.
  • An arrangement of a ventilation opening in the wall of the storage space also contributes to this. This ventilation opening can be very small so that no tooth cleaning agent can escape, but it prevents a negative pressure which could possibly impair the delivery effect of the piston / cylinder arrangement.
  • the piston / cylinder arrangement is interchanged, so that the piston is firmly attached to the handle, for example with the interposition of a longer feed tube which then also forms the piston rod at the same time as the cylinder is on the actuator.
  • This embodiment allows manufacture from simple parts, e.g. a cut-to-length tube, a single lip seal which can be pushed onto it and which forms the piston, and a simple, cap-shaped cylinder arrangement which can be easily attached to the actuator or can be formed directly thereon.
  • the material for the lip seal In order to ensure that when the lip seal returns after the actuation stroke, the diameter of the lip seal is sufficiently reduced to ensure that tooth cleaning agents flow past, the material for the lip seal must of course be sufficiently elastic and resilient in a professional manner. Since because of the V-shaped design of the lip seal and the application of the front face of the V's with the conveying forces, not only a firm contact of the edge of the lip seal with the associated cylinder wall can be achieved, but even an extension, is provided according to a development of the invention that Dimension of the edge of the lip seal is smaller than that of the associated cylinder, so that the passage of tooth cleaning agent is facilitated when the piston returns after the delivery stroke. However, this embodiment requires a higher viscosity of the tooth cleaning agent in order to prevent the tooth cleaning agent from flowing out e.g. to prevent with filling toothbrush lying down.
  • the lip seal can easily be made rotationally symmetrical or elliptical. But it is also possible to design the lip seal so that it has a uniform, V-shaped cross section in an extension perpendicular to the conveying direction, so that two opposite lips are formed, which in one cross-sectionally rectangular cylinder. These lips are not subjected to stretching or compression, as in the cylindrical or elliptical embodiment, but only to bending. Their flexibility is therefore particularly great, so that the tooth cleaning agent can flow past the lip seal particularly easily when the lip seal returns after the working stroke.
  • the filling toothbrush according to Rg. 1 consists of a handle 1, which has a handle 2 on one side, at the end of which there are bristles 3.
  • a storage space 4 is formed in the interior of the handle 1 and is ventilated through a ventilation opening 5.
  • a connecting channel 6 in the area of the wall of the handle 1 leads from the storage space 4 to a channel 7 in the handle 2 and an outlet opening 8 in the area of the bristles 3.
  • the inside of the lower area of the handle 1 forms a cylinder 9, in which a piston 10 designed as an actuating element is slidably arranged, as can be seen in the enlarged illustration in FIG. 3.
  • the piston 10 is biased against the direction of actuation by a helical spring 11 which is supported on inner ribs 12 and on a lower end edge 13 of the connecting channel.
  • An inwardly projecting edge 14 holds the piston 10 in the rest position.
  • piston 10 On one side of the piston 10 there is a piston rod 15, at the end of which there is a lip seal 16 which is made of elastic material and acts as a piston which is displaceable in a lower end 17 of the connecting channel, which acts as a cylinder.
  • Piston 10, piston rod 15 and lip seal 16 are made from a single piece of soft plastic. From Fig. 2 it can be seen that the lower end 17 of the connecting channel 6 has an elongated, practically elliptical cross-section, so that a relatively large cross-section is formed and there is greater flexibility for the lips of the lip seal 16 due to bending of the lips. It can also be seen from FIG. 2 that the cylinder 9 is cylindrical in the lower region of the storage space 4.
  • the filling toothbrush shown in Figs. 1 to 3 can be easily filled with the piston 10 removed, which consists of relatively soft material and can be pressed past the edge 14 after filling, so that the piston 10 closes the storage space 4 and at the same time occupies its functional position.
  • a total of one metering device is thus formed, with which a certain amount of tooth cleaning agent can be brought between the bristles 3 in each actuation stroke by pressure on the piston 10.
  • 1 consists of only three parts, namely the handle 1 with the handle 2, the coil spring 11 and the piston 10 with the piston rod 15 and the lip seal 16.
  • Fig. 4 shows a modification of the lower part of the filling toothbrush according to Fig. 1, so that a total of only two parts are required.
  • the coil spring 11 shown in FIG. 3 is namely replaced by elastic arms which extend from the piston 10 and together with this consist of one piece.
  • FIG. 5 shows in section a second exemplary embodiment, in which a handle 21 is located on a handle 20, the end of which has bristles 22.
  • a storage space 23 is formed in the interior of the handle 20, through which a tube 24 leads, the inner connecting channel 25 of which leads via a channel 26 to an outlet opening 27 in the region of the bristles 22.
  • a part 28 On the lower end of the tube 24 is a part 28 which forms a cylinder 29 in the lower region in which a V-shaped seal 30 is displaceable as a piston, which is connected via a piston rod 31 to an elastic cap 32.
  • Lip seal 30, piston rod 31 and cap 32 are made from a single piece of elastic material.
  • the cap 32 closes the lower part of the storage space 23 and is at the same time overlapped by a tubular part 33 extending from the handle 20, which protects the cap 32 from unintentional actuation and whose lower edge 34 serves as a base for the filling toothbrush.
  • the tubular part 33 there are semicircular indentations 35 into which a finger, e.g. the thumb, when the cap 32 is actuated.
  • the storage space 23 is ventilated through a ventilation hole 36.
  • the part 28 has star-shaped webs 37, as can be seen in particular from FIG. 6, which is a bottom view of the illustration in FIG. 5, with the parts shown in black being omitted.
  • FIG. 6 is a bottom view of the illustration in FIG. 5, with the parts shown in black being omitted.
  • the details of the lower region of the embodiment according to FIG. 5 can be seen in particular from the enlarged representation of this region in FIG. 7.
  • FIG. 8 shows a modification of the lower region shown in FIG. 7.
  • the storage space is closed by a solid base 38 through which an opening 39 extends for a piston rod 40, which connects the inner lip seal to an externally arranged cap 41.
  • FIG. 9 shows a further embodiment similar to Fig. 5, and the same parts are given the same reference numerals. The difference is that the lip seal and the cylinder part are interchanged so that a cylinder part 42 is located on the cap 32, fastened by a button 43, while a lip seal 44 is located at the lower end of the tube 24.
  • FIG. 10 shows this modified part according to FIG. 9 in an enlarged form.
  • FIG. 11 shows a modification of FIG. 10 according to the principle according to FIG. 8, in that the storage space 23 is closed by a fixed base 45, through which an opening 46 for a piston rod 47 leads, which by means of a button 48 with an elastic cap 49 connected is. On the piston rod 47 there is a cylinder 50 which interacts with the lip seal 44.
  • the invention essentially relates to a dosing device is described in connection with a filling toothbrush, but the basic principle can also be used wherever simple dosing of liquids, in particular high biscuitity, is to be carried out, e.g. for containers for shoe polish, ointments, soaps, pasteuse foods or the like.
  • FIG. 12 shows an embodiment in a longitudinal section similar to FIG. 1, and FIG. 13 shows a section XIII-XIII through FIG. 12.
  • the design of handle 1 and handle 2 largely corresponds to that of the embodiment of FIG. 1. Same or corresponding parts are therefore provided with the same reference numbers.
  • a cap 51 is firmly pressed, on which there is an extension 52, which extends partially into the storage space 4 and on which a flap 53 is freely articulated, which together with the extension 52 and the Cap 51 consists of one piece.
  • This flap has such an extent that, in the closed state, it bears tightly upwards against a lower edge 54 and on lower surfaces 55 of lateral projections 56 of the storage space 4.
  • a lower edge 57 of the handle 1 forms, possibly together with the essentially flat cap 51, a flat standing surface for the vertical positioning of the filling toothbrush.
  • Fig. 13 shows a section XIII-XIII through Rg. 12, so that the position of the extension 52 and the lateral projections 56 can be seen particularly clearly.
  • the flap 53 is hatched, so that the passage space of the valve thus formed between the extension 52, the projections 56 and the lower edge 54 is clearly recognizable.
  • Tooth cleaning agent located in the storage space 4 e.g. Toothpaste therefore drops due to the force of gravity and past the open flap 53 into a space 58.
  • the volume of the space 58 can be reduced by pressing on the membrane-shaped part of the cap 51.
  • the flap 53 closes, tightly fitting against the edge 54 and the lower surfaces 55.
  • dentifrice can only escape through the connecting channel 6, so that it emerges from the outlet opening 8. If the pressure on the membrane of the cap 51 is removed again, the latter seeks to return to its normal position, so that the volume of the space 58 increases again.
  • the toothbrush shown in FIG. 14 has a brush part 60, a handle 61 and a handle 62.
  • the cross section of the handle 62 and handle 61 tapers from an end 63 facing away from the brush part 60 to the brush part 60 substantially uniformly, so that the handle 62 and handle 61 form a single part which tapers towards the brush part 60.
  • the handle 61 is slightly curved so that there is an adjustment between the handle 62 and the brush part 61 in accordance with the posture of the hand when brushing and the desired direction of the brush part 61.
  • the end 63 of the handle 62 also has a base 64 on which the entire toothbrush can be placed. In the large cross-section, especially in the area of the end 63.
  • the handle 62 can provide storage space for toothpaste, so that the toothbrush as a whole is designed as a filling toothbrush.
  • a conveyor device for the toothpaste can also be provided in the region of the end 63. Since the handle 62 in any case has a large cross section in the area facing away from the brush part, it can be held securely and non-rotatably and comfortably in the hand. By tapering the handle 62 towards the brush part, unnecessarily large cross sections are avoided in the front area, so that the insertion depth of the toothbrush is not unnecessarily restricted.
  • FIG. 16 corresponds to FIG. 15 and shows an octagonal cross-sectional shape of the handle 62, which can also extend into the handle 61.
  • FIG. 17 shows a special case of the angular cross-sectional shape according to FIG. 16, namely a triangle in which the inner volume is somewhat smaller in the case of a filling toothbrush, but in which the handle 62 can be held in the hand in a very rotationally fixed manner.
  • FIG. 18 shows a modification of the embodiment according to FIG. 5.
  • the same parts are provided with the same reference numbers.
  • a bellows 65 which is essentially cylindrical and the walls of which are folded in a zigzag shape. With its lower edge 66, the bellows is tightly clamped between an inner wall 67 of the handle 20 and the outer wall of the elastic cap 32.
  • the upper end of the bellows 65 has a truncated cone-shaped part 68, in which there is an opening which forms with its edge a cylindrical lip 69 which tightly but slightly displaceably surrounds the tube 24.
  • the interior of the bellows 65 forms a storage space for toothpaste, which is protected against drying out and penetration of air through the bellows 65, while at the same time toothpaste cannot escape from the bellows and through the ventilation hole 36.

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  • Brushes (AREA)
EP19860102023 1985-06-11 1986-02-18 Brosse à dents munie d'un réservoir Expired EP0205742B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86102023T ATE42028T1 (de) 1985-06-11 1986-02-18 Fuellzahnbuerste.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19858516991 DE8516991U1 (de) 1985-06-11 1985-06-11 Zahnbürste, insbesondere Füllzahnbürste
DE8516991U 1985-06-11
DE3523891 1985-07-04
DE19853523891 DE3523891C2 (de) 1984-12-12 1985-07-04 Füllzahnbürste

Publications (2)

Publication Number Publication Date
EP0205742A1 true EP0205742A1 (fr) 1986-12-30
EP0205742B1 EP0205742B1 (fr) 1989-04-12

Family

ID=25833692

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19860102023 Expired EP0205742B1 (fr) 1985-06-11 1986-02-18 Brosse à dents munie d'un réservoir

Country Status (1)

Country Link
EP (1) EP0205742B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2289212A (en) * 1994-05-05 1995-11-15 David Grundy Reservoir toothbrush

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE144302C (fr) *
FR927980A (fr) * 1946-04-26 1947-11-14 Appareil pour le nettoyage des dents
FR929420A (fr) * 1946-06-14 1947-12-26 Brosse à dents, à réservoir
US2715236A (en) * 1953-04-07 1955-08-16 Tereno Jack Liquid ejector and applicator
DE1929029U (de) * 1965-09-16 1965-12-16 Erich Kleine Nachfuellzahnbuerste.
US4066367A (en) * 1976-04-05 1978-01-03 Frank Sherosky Brush shave device
DE2637856A1 (de) * 1976-08-23 1978-03-02 Bon Luigi Del Fuellhalterbuerste
DE8436331U1 (de) * 1984-12-12 1986-04-10 Hertrampf, Michael, Dr., 3007 Gehrden Füllzahnbürste

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE144302C (fr) *
FR927980A (fr) * 1946-04-26 1947-11-14 Appareil pour le nettoyage des dents
FR929420A (fr) * 1946-06-14 1947-12-26 Brosse à dents, à réservoir
US2715236A (en) * 1953-04-07 1955-08-16 Tereno Jack Liquid ejector and applicator
DE1929029U (de) * 1965-09-16 1965-12-16 Erich Kleine Nachfuellzahnbuerste.
US4066367A (en) * 1976-04-05 1978-01-03 Frank Sherosky Brush shave device
DE2637856A1 (de) * 1976-08-23 1978-03-02 Bon Luigi Del Fuellhalterbuerste
DE8436331U1 (de) * 1984-12-12 1986-04-10 Hertrampf, Michael, Dr., 3007 Gehrden Füllzahnbürste

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2289212A (en) * 1994-05-05 1995-11-15 David Grundy Reservoir toothbrush

Also Published As

Publication number Publication date
EP0205742B1 (fr) 1989-04-12

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