DE3815819C1 - Electric toothbrush having a rotating brush head - Google Patents

Electric toothbrush having a rotating brush head

Info

Publication number
DE3815819C1
DE3815819C1 DE19883815819 DE3815819A DE3815819C1 DE 3815819 C1 DE3815819 C1 DE 3815819C1 DE 19883815819 DE19883815819 DE 19883815819 DE 3815819 A DE3815819 A DE 3815819A DE 3815819 C1 DE3815819 C1 DE 3815819C1
Authority
DE
Germany
Prior art keywords
rotation
brush head
brush
electric toothbrush
rotating brush
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.)
Expired
Application number
DE19883815819
Other languages
German (de)
Inventor
Werner Dr. 8672 Selb De Zollfrank
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
Application filed by Individual filed Critical Individual
Priority to DE19883815819 priority Critical patent/DE3815819C1/en
Application granted granted Critical
Publication of DE3815819C1 publication Critical patent/DE3815819C1/en
Expired 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
    • A61C17/16—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

Abstract

Two photoresistors which are seated in the brush housing signal their resistance value or their voltage drop to a voltage comparator circuit. Thus, one signals the light intensity in the region of the gums (gingiva), and the other signals that at the tooth surface. The light intensity in the region of the gums is always less than that in the region of the tooth surface. The voltage comparator then signals to the motor control which voltage is smaller or larger. Depending on this, the motor control determines the direction of rotation of the brush drive. It is thus possible to obtain the correct direction of rotation of the brush barrel (roller) at any position in the mouth. <IMAGE>

Description

Elektrische Zahnbürste mit einem rotierenden Bürstenkopf.Electric toothbrush with a rotating brush head.

1. Die Erfindung geht aus von einer elektrischen Zahnbürste mit einem rotierenden Bürstenkopf nach dem Oberbegriff des Anspruchs 1.1. The invention is based on an electric toothbrush with a rotating brush head according to the preamble of claim 1.

Die Möglichkeit zum wahlweisen Betrieb in der einen oder anderen Richtung dient dem heilsamen Zweck, die Borsten immer vom Zahnfleisch zum Zahn, also von "Rot" nach "Weiß" laufen zu lassen.The possibility of optional operation in one direction or the other is beneficial Purpose, the bristles always from Gum to tooth, that is, from "red" to "white".

2. Eine derartige Bürste ist zum Beispiel im Gebrauchs­ muster DE-GM 84 22 081.3 beschrieben.2. Such a brush is used, for example sample DE-GM 84 22 081.3.

Bei dieser erfolgt das Ändern der Drehrichtung des Bürstekopfes durch manuelle Betätigung eines elektrischen Schalters. Dies kann zu Fehl­ schaltungen mit verkehrter, auf das Zahnfleisch schäd­ lich wirkender Drehrichtung führen.With this, the direction of rotation of the brush head is changed by manual actuation of a electrical switch. This can be wrong Circuits with wrong, on the gums damage direction of rotation.

3. Eine stets richtige Drehrichtung wird zwar durch zwei gegenläufige Bürsten, wie sie etwa im Gebrauchsmuster DE- GM 75 30 097 beschrieben sind, auch erreicht.3. A correct direction of rotation is always determined by two opposing brushes, such as those in the utility model DE GM 75 30 097 are also achieved.

Jedoch verbieten die beschränkten Platzverhältnisse in der Mundhöhle eine effiziente Anwendung dieses Prinzips.However, the limited space in the Oral cavity an efficient application of this principle.

4. Der Erfindung liegt die Aufgabe zugrunde, die richtige Einstellung der Drehrichtung des Bürstenkopfes in jedem Kieferquadranten automatisch - und damit losgelöst von menschlichen Irrtümern - zu erzielen.4. The invention is based, the correct task Setting the direction of rotation of the brush head in each Jaw quadrants automatically - and thus detached from human errors - to achieve.

5. Gelöst wird diese Aufgabe mit den im kennzeichnenden Teil des Anspruchs 1 angegebenen Merkmalen. 5. This problem is solved with those in the characterizing part of claim 1 specified features.  

6. Es läßt sich dadurch an jeder Stelle neben Zähnen (im Munde) die richtige Umdrehungsrichtung erzielen.6. It can be in any place next to teeth (in the mouth) achieve the correct direction of rotation.

Die im paraodontal gesunden Gebiss empfohlenen Bürstmethode "von Rot nach Weiß" kann so mit der elektrischen Zahn­ bürste effektiv und exakt durchgeführt werden.The brushing method recommended in the paraodontally healthy dentition "from red to white" can be done with the electric tooth brush can be carried out effectively and precisely.

7. Die Erfindung wird anhand von Zeichnungen näher erläutert.7. The invention is explained in more detail with reference to drawings.

Bild 1 Bürstenrotationsrichtung, abhängig von der Stellung des Bürstenkopfes zum Zahn. Außenliegende, gegenübersitzende Fotowider­ stände FW 1 und FW 2 am Bürstengehäuse. Fig. 1 Direction of brush rotation, depending on the position of the brush head relative to the tooth. FW 1 and FW 2 external, opposite photo resistors on the brush housing.

Bild 2 Helligkeitsverhältnisse im Mund, gesehen von vorne nach hinten. Leichte Mundöffnung voraus­ gesetzt. Picture 2 Brightness conditions in the mouth, seen from front to back. Slight mouth opening required.

Bild 3 FW 1 meldet Spannungsabfall UFW 1; FW 2 meldet UFW 2 an Spannungskomparator. Figure 3 FW 1 reports voltage drop UFW 1 ; FW 2 reports UFW 2 to voltage comparator .

  • a) Situation in der Mundhöhle:
    Zur Ansteuerung der elektrischen Zahnbürste wird die natürliche Beleuchtungsstärke in der Mundhöhle bei halb geöffnetem Mund herangezogen. Diese ist im Bereich der Zahnfleischgegend ("Rot") stets geringer als im Bereich der Zahnoberflächen "(Weiß") siehe Bild 1.    a) Situation in the oral cavity:
    The natural illuminance in the oral cavity with the mouth half open is used to control the electric toothbrush. This is always lower in the area of the gum region ("red") than in the area of the tooth surface "(white"), see Figure 1.
  • b) Erläuterung der Erfindungsmerkmale:
    Zwei Fotowiderstände FW 1 und FW 2 sind außen am Bürsten­ gehäuse in gegensätzlicher Richtung angebracht und melden einer Spannungskomparatorschaltung ihren licht­ abhängigen Spannungsabfall. FW 1 ist auf die Licht­ verhältnisse im Zahnfleischbereich ausgerichtet und FW 2 auf diejenigen nahe der Zahnoberfläche oder umgekehrt, je nach Stellung des Bürstenkopfgehäuses. Die Lichtstärke des Zahnfleischbereichs ist immer kleiner als die des Zahnoberflächenbereichs, siehe Bild 2.
    Der Spannungskomparator meldet nun der Motorsteuerung, welche Spannung kleiner oder größer ist (wo "Rot" bzw. "Weiß" ist). Hiervon abhängig, bestimmt diese die Um­ drehungsrichtung des Bürstenantriebes, siehe Bild 3.    b) Explanation of the features of the invention:
    Two photo resistors FW 1 and FW 2 are attached to the outside of the brush housing in opposite directions and report their light-dependent voltage drop to a voltage comparator circuit. FW 1 is geared to the light conditions in the gum area and FW 2 to those near the tooth surface or vice versa, depending on the position of the brush head housing. The light intensity of the gum area is always lower than that of the tooth surface area, see Figure 2.
    The voltage comparator now reports to the motor controller which voltage is lower or higher (where "red" or "white" is). Depending on this, this determines the direction of rotation of the brush drive, see Figure 3.

Claims (1)

Elektrische Zahnbürste mit einem rotierenden Bürsten­ kopf, der von einem Elektromotor angetrieben ist und in beiden Richtungen laufen kann, dadurch gekennzeichnet, daß die Drehrichtungsumkehr automatisch dadurch erfolgt, daß am Bürstengehäuse an zwei nahezu 180 Grad voneinander beabstandeten Stellen Photo-Widerstände (FW 1, FW 2) als Lichtsensoren angeordnet sind, die Bestandteile einer elektronischen Schaltung sind, deren Ausgangssignale in einem Spannungskomparator verglichen werden, dessen Ausgangssignal je nach seiner Wertigkeit die Drehrichtung des Motors bestimmt.Electric toothbrush with a rotating brush head, which is driven by an electric motor and can run in both directions, characterized in that the direction of rotation is automatically reversed by the fact that photo-resistors (FW 1 , FW 2 ) are arranged as light sensors, which are components of an electronic circuit, the output signals of which are compared in a voltage comparator, the output signal of which, depending on its value, determines the direction of rotation of the motor.
DE19883815819 1988-05-09 1988-05-09 Electric toothbrush having a rotating brush head Expired DE3815819C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19883815819 DE3815819C1 (en) 1988-05-09 1988-05-09 Electric toothbrush having a rotating brush head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19883815819 DE3815819C1 (en) 1988-05-09 1988-05-09 Electric toothbrush having a rotating brush head

Publications (1)

Publication Number Publication Date
DE3815819C1 true DE3815819C1 (en) 1989-10-05

Family

ID=6353994

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19883815819 Expired DE3815819C1 (en) 1988-05-09 1988-05-09 Electric toothbrush having a rotating brush head

Country Status (1)

Country Link
DE (1) DE3815819C1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2659848A1 (en) * 1990-03-23 1991-09-27 Rouyer Daniel Rotary toothbrush having an electric motor
DE4102702A1 (en) * 1991-01-30 1992-08-06 Robert Finke Rotating electric tooth-brush for cleaning teeth and caring for gums - has rotating brush with guard cap and changeover switch for reversing direction of rotation
DE4207686A1 (en) * 1992-03-11 1993-09-16 Frank Rummer Brush head for electric toothbrush - has holder with hinged sections, one end section having longitudinal cylindrical brushes motor-driven by flexible shafts

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7530097U (en) * 1975-09-23 1976-01-15 Kamm, Heinrich, 3530 Warburg DRIVEN TOOTH BRUSH
DE8422081U1 (en) * 1984-07-25 1984-10-18 Höfer, Helmut, 6729 Bellheim ELECTRIC TOOTHBRUSH

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7530097U (en) * 1975-09-23 1976-01-15 Kamm, Heinrich, 3530 Warburg DRIVEN TOOTH BRUSH
DE8422081U1 (en) * 1984-07-25 1984-10-18 Höfer, Helmut, 6729 Bellheim ELECTRIC TOOTHBRUSH

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2659848A1 (en) * 1990-03-23 1991-09-27 Rouyer Daniel Rotary toothbrush having an electric motor
DE4102702A1 (en) * 1991-01-30 1992-08-06 Robert Finke Rotating electric tooth-brush for cleaning teeth and caring for gums - has rotating brush with guard cap and changeover switch for reversing direction of rotation
DE4207686A1 (en) * 1992-03-11 1993-09-16 Frank Rummer Brush head for electric toothbrush - has holder with hinged sections, one end section having longitudinal cylindrical brushes motor-driven by flexible shafts

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Legal Events

Date Code Title Description
8100 Publication of the examined application without publication of unexamined application
D1 Grant (no unexamined application published) patent law 81
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee