WO2011044858A1 - Rotary head of electric toothbrush - Google Patents

Rotary head of electric toothbrush Download PDF

Info

Publication number
WO2011044858A1
WO2011044858A1 PCT/CZ2009/000121 CZ2009000121W WO2011044858A1 WO 2011044858 A1 WO2011044858 A1 WO 2011044858A1 CZ 2009000121 W CZ2009000121 W CZ 2009000121W WO 2011044858 A1 WO2011044858 A1 WO 2011044858A1
Authority
WO
WIPO (PCT)
Prior art keywords
shaft
bristles
rotary head
teeth
cover
Prior art date
Application number
PCT/CZ2009/000121
Other languages
French (fr)
Inventor
Řehka LADISLAV
Original Assignee
Ladislav Rehka
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 Ladislav Rehka filed Critical Ladislav Rehka
Priority to PCT/CZ2009/000121 priority Critical patent/WO2011044858A1/en
Publication of WO2011044858A1 publication Critical patent/WO2011044858A1/en

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
    • A61C17/16Power-driven cleaning or polishing devices
    • A61C17/22Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
    • A61C17/32Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating
    • A61C17/34Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor
    • A61C17/3409Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor characterized by the movement of the brush body
    • A61C17/3445Translation along the axis of the toothbrush handle
    • 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

Abstract

Proposed toothbrush head meets the needs of proper cleaning of teeth recommended by dentists. Brush head displayed on Fig. 3 is made up of shaft (5), in the section (6) of the shaft (5) the bristles (4) are perpendicularly attached to the shaft (5), the bristles (4) are protected on one side by cover (1) and the section (6) with bristles (4) is gyrated. The shaft (5) is placed in the middle of casing (2) embedded into bearings (7) that supports the shaft (5) and is connected by the conjunction (8) located in the neck (3) at the opposite end of the shaft (5) than the bristles (4), with a drive which allows both bi-directional free rotation (A) of the shaft (5) and its movement in the shaft axis by linear direction shift (B).

Description

Rotary head of electric toothbrush

Technical Field

The technical solution relates to a rotary head of an electric toothbrush, which has a major impact on dental cleaning and protection against mechanical damage caused by conventional toothbrushes and currently available electric toothbrushes.

Background Art

Currently available electric toothbrush heads are either a part of the vibrating electric toothbrushes, where the position of bristles is stable immobile non-rotating and is perpendicular to the toothbrush head in a vertical and horizontal position, or are separate and the head rotates perpendicular to the axis of the toothbrush body. The technique of brushing the teeth consists of the manual movement of the hand or spinning round piece with bristles that are placed perpendicular to the horizontal and vertical position of the body of electric toothbrush with ' an electric motor. By the above method the cleaning is performed by rotating in circular motion on the teeth surface, which, according to dentists is not good for the gums health, because such cleaning can cause tooth neck denudation, gingivitis, and may lead to their permanent breach. Also, when using the current brush the wrong way, it can lead to the same health complications as the use of the above-described electric toothbrushes. Disclosure of the invention

The main purpose of the proposed rotary head of an electric toothbrush is a fulfillment of conditions for correct teeth cleaning that is recommended by dentists to maintain the health of teeth and gums. Principle and the uniqueness of this solution lie in the fact that the rotating brush cleans the teeth by moving from the gums towards the tip of the tooth. Such method of cleaning is ensured by rotating bristles that rotate in the brush head in an upright position on the axis of rotation at an angle of three hundred and sixty degrees in both directions of rotation and ensures proper cleaning of the outer and inner side of teeth. Also the efficiency of cleaning interdental spaces is increased. During the cleaning, it is possible to use both directions of rotation of the toothbrush head with regard to the part of teeth, which is cleaned. Simulating the effect of impact drill, it is also possible to use the axial movement of the shaft of the rotary head. Due to this feature, the cleaning time is reduced and cleaning is more effective. Brush head comprise the shaft that is covered on one end by perpendicularly attached bristles protected by cover from back side of the head. Cover is here in order to avoid unwanted contact of bristles with the oral cavity. In this part the shaft is gyrated, allowing a gradual purification from side to side, like the movement of the spindle. The spiral shape of this part of shaft is given by ordinary method of manufacture of cylindrical brushes. The shaft is situated in the middle of casing embedded into bearings that supports the shaft and is connected by its conjunction located in neck at the opposite end of the shaft than the bristles, with a drive which allows bi-directional free rotation and movement in the shaft axis, where the rotations are infinitely variable and changeable in both directions. The range of the shaft is limited by the size of the cover. The speed of the axial rotation is continuously changeable. Brief Description of Drawings

Technical solution is explained by drawing on which Figure 1 shows a side view of the toothbrush head and bristles position. Fig. 2 illustrates a frontal view of the toothbrush head.

Fig. 3 is a cross-section showing the fitting of toothbrush head shaft .

Example of Embodiment

Dental cleaning is performed by the movement of toothbrush head with rotating bristles, preferably in a horizontal position against the teeth, and by changing the position from the front teeth to the rear and vice versa. This method shortens the treatment time necessary to properly clean the teeth and increases its effectiveness in relation to existing methods of cleaning. Proposed toothbrush head meets the needs of proper cleaning of teeth recommended by dentists. Brush head is made up of shaft 5_, in the section 6_ of the shaft 5_ the bristles _4 are perpendicularly attached to the shaft 5_, the bristles 4_ are protected on one side by cover 1 and the section 6 with bristles _4 is gyrated. The shaft _5 is placed in the middle of casing 2 embedded into bearings 1_ that supports the shaft _5 and is connected by the conjunction _8 located in the neck 3_ at the opposite end of the shaft 5_ than the bristles 4_, with a drive which allows both bi-directional free rotations A of the shaft .5 and its movement in the shaft axis by linear direction shift B. The range of the shift B is limited by the size of the cover 1_. The speed of the axial rotation B is continuously changeable.

Industrial Utilization

The technical solution is applicable in dental hygiene for daily cleaning of the gums, teeth and interdental spaces. List of Reference Marks

1 - cover;

2 - casing;

3 - neck;

4 - bristles;

5 - shaft;

6 - section of shaft with bristles;

7 - bearings;

8 - conjunction of the shaft with drive;

A - bi-directional rotations;

B - linear shift.

Claims

PATENT Claims
1. Rotary head of electric toothbrush comprising the casing (2) and a shaft (5) with bristles (4) partially protected from side by a cover (1) , characterized by that the shaft (5) is pivoted in bearings (7) allowing the shaft (5) free continual axial rotations (A), where shaft with bristles (4) is circumgyratable .
2. Rotary head according to claim 1, characterized by that the shaft (5) is created as linearly shifted (B) in both directions of its axis and the range of the shift (B) is limited by the size of shaft (5) cover (1) .
3. Rotary head according to claim 1, characterized by that axial rotations (A) of the shaft (5) in bearings (7) are infinitely variable and changeable in both directions of rotations (A) .
4. Rotary head according to any of claims 1 and 3, characterized by that the speed of shaft (5) rotation (A) is continuously changeable .
PCT/CZ2009/000121 2009-10-15 2009-10-15 Rotary head of electric toothbrush WO2011044858A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CZ2009/000121 WO2011044858A1 (en) 2009-10-15 2009-10-15 Rotary head of electric toothbrush

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CZ2009/000121 WO2011044858A1 (en) 2009-10-15 2009-10-15 Rotary head of electric toothbrush

Publications (1)

Publication Number Publication Date
WO2011044858A1 true WO2011044858A1 (en) 2011-04-21

Family

ID=42543068

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CZ2009/000121 WO2011044858A1 (en) 2009-10-15 2009-10-15 Rotary head of electric toothbrush

Country Status (1)

Country Link
WO (1) WO2011044858A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8558430B2 (en) 2010-08-19 2013-10-15 Braun Gmbh Resonant motor unit and electric device with resonant motor unit
US8631532B2 (en) 2011-07-25 2014-01-21 Braun Gmbh Oral hygiene device
US9003590B2 (en) 2010-07-23 2015-04-14 Braun Gmbh Handle section of a small electric device and small electric device
US9099939B2 (en) 2011-07-25 2015-08-04 Braun Gmbh Linear electro-polymer motors and devices having the same
US9226808B2 (en) 2011-07-25 2016-01-05 Braun Gmbh Attachment section for an oral hygiene device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4603448A (en) * 1985-06-07 1986-08-05 Mtv Associates Rotary electric toothbrush
US5044035A (en) * 1990-02-12 1991-09-03 George Barradas Dental cleaning device
DE29502462U1 (en) * 1995-02-15 1995-04-13 Bobrek Tadeusz Electric toothbrush

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4603448A (en) * 1985-06-07 1986-08-05 Mtv Associates Rotary electric toothbrush
US5044035A (en) * 1990-02-12 1991-09-03 George Barradas Dental cleaning device
DE29502462U1 (en) * 1995-02-15 1995-04-13 Bobrek Tadeusz Electric toothbrush

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9003590B2 (en) 2010-07-23 2015-04-14 Braun Gmbh Handle section of a small electric device and small electric device
US8558430B2 (en) 2010-08-19 2013-10-15 Braun Gmbh Resonant motor unit and electric device with resonant motor unit
US8631532B2 (en) 2011-07-25 2014-01-21 Braun Gmbh Oral hygiene device
US9099939B2 (en) 2011-07-25 2015-08-04 Braun Gmbh Linear electro-polymer motors and devices having the same
US9226808B2 (en) 2011-07-25 2016-01-05 Braun Gmbh Attachment section for an oral hygiene device
US10327876B2 (en) 2011-07-25 2019-06-25 Braun Gmbh Oral cleaning tool for an oral hygiene device

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