WO1994021191A1 - Elektrische zahnbürste - Google Patents
Elektrische zahnbürste Download PDFInfo
- Publication number
- WO1994021191A1 WO1994021191A1 PCT/EP1994/000704 EP9400704W WO9421191A1 WO 1994021191 A1 WO1994021191 A1 WO 1994021191A1 EP 9400704 W EP9400704 W EP 9400704W WO 9421191 A1 WO9421191 A1 WO 9421191A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- shaft
- electric toothbrush
- carrier
- toothbrush according
- bristles
- Prior art date
Links
- 238000004140 cleaning Methods 0.000 abstract description 20
- 230000000694 effects Effects 0.000 abstract description 3
- 230000010355 oscillation Effects 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
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
- A61C17/222—Brush body details, e.g. the shape thereof or connection to handle
-
- 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
-
- 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
- A61C17/32—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating
- A61C17/34—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor
- A61C17/3409—Power-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
- A61C17/3454—Translation along the axis perpendicular of the axis of toothbrush handle and in the plane defined by the bristle holder
-
- 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
- A61C17/32—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating
- A61C17/34—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor
- A61C17/349—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor with multiple brush bodies
-
- 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
- A61C17/32—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating
- A61C17/34—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor
- A61C17/3409—Power-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
- A61C17/3436—Rotation around the axis perpendicular to the plane defined by the bristle holder
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S15/00—Brushing, scrubbing, and general cleaning
- Y10S15/05—Varied length bristle
Definitions
- the invention relates to an electric toothbrush with a brush part in which a rotatably mounted shaft is accommodated and on which a bristle carrier coupled to the shaft is rotatably mounted, and with means for alternately driving the shaft.
- Such an electric toothbrush is known from German laid-open specification DE 39 37 850 AI, which is included in the disclosure content of the present application by express reference.
- the alternating rotary movement of the shaft is transmitted to the bristle carrier with the help of a bevel gear.
- This is provided with a large number of bristles, the free ends of which form an approximately circular cleaning surface.
- this cleaning surface carries out an alternating rotary movement around its vertical.
- the user of the toothbrush can use the cleaning surface to clean the surfaces as well as the interdental spaces of the teeth and also massage the gums.
- a slip-on brush for an electric toothbrush is known from German design M 92 03 436, in which a bristle holder is integrally connected to the brush handle.
- the bristle carrier has a multiplicity of bristles, the free ends of which form an elongated cleaning surface, and a single bristle group, the bristles of which are formed to a point.
- the cleaning surface essentially serves to clean the surfaces of the teeth, while the bristle group is intended for cleaning the interdental spaces.
- the bristles of the cleaning surface and the individual bristle group perform the same movement.
- the object of the invention is an electric toothbrush to create the type mentioned above, with which an improved cleaning of the interdental spaces is also possible.
- the interdental brush With the help of the interdental brush, it is possible to clean the interdental spaces particularly easily and thoroughly with an electric toothbrush of the type mentioned at the beginning.
- the interdental brush is not arranged on the bristle carrier and coupled to the shaft via the bevel gear, but is coupled to the shaft independently of the bristle carrier. This makes it possible to set the bristle carrier in a, preferably alternating, rotational movement about an axis essentially perpendicular to the shaft and the interdental brush in an alternating pivoting movement or reciprocating movement about the axis of rotation of the shaft.
- the electric toothbrush is switched on, the user can clean the surfaces of the teeth with the cleaning surface of the oscillating bristle carrier and the interdental brushes with the swiveling or reciprocating movement. The teeth are thus cleaned essentially with the help of the free ends of the bristles of the bristle carrier forming the cleaning surface, while the bristles of the interdental brush are provided for an additional, more effective cleaning of the interdental spaces
- the interdental brush is arranged at a distance from the bristle holder. This ensures that the interdental brush can penetrate deeply into the interdental spaces without the bristles forming the cleaning surface being able to prevent this due to the support on the tooth surfaces.
- the interdental brush is arranged at an angle, in particular approximately at right angles to the shaft. In this way it is achieved that the interdental brush sweeps over as large an area as possible and thus brings about good cleaning in the interdental spaces.
- the interdental brush is arranged in the area of the brush part and an opening is provided in the brush part through which the interdental brush is inserted. In this way, the shaft accommodated in the brush part is not openly accessible and the user of the electric toothbrush is well protected against possible injuries from these components.
- the interdental brush has a carrier in which at least one, in particular two, bristle groups are held.
- the bristle groups are expediently arranged next to one another in the pivoting direction of the interdental brush. Such an arrangement of bristle groups ensures that the bristles of the bristle groups can be easily inserted into the interdental spaces.
- the carrier is also advantageously possible for the carrier to be provided with one or more pins and for the shaft to be provided with one or more associated bores for inserting the carrier.
- This type of coupling of the interdental brush and the shaft can additionally be reinforced by gluing or welding.
- the bristles of the bristle holder point approximately in the same direction as the bristles of the interdental brush.
- the bristles of the interdental brush are advantageously longer than the bristles of the bristle holder. As a result, the bristles of the interdental brush can easily penetrate into the interdental spaces.
- the range of rotation angles of the shaft prefferably be in a range of values of approximately +/- 35 degrees.
- the interdental brush also has such a swivel range that ensures a good cleaning effect.
- the carrier has a bore in a foot section and is fixed to the shaft by means of a pin.
- This embodiment has proven to be expedient, in particular according to an embodiment of the toothbrush, as described in German patent application P42 39 251.
- this type of fixing enables simple assembly of the toothbrush, while on the other hand this type of fixing is very economical from an economic point of view.
- the pin is received at one end in a bore in the shaft and at the other end in a bore in the carrier tube, the bores being arranged centrally with respect to an axis of rotation of the shaft, the pin, in addition to fixing the carrier, also provides additional support for the shaft guaranteed with respect to the axis of rotation.
- a rib of the carrier arranged at the foot section is received by a groove provided on the shaft. This measure, in particular in connection with the penetration of the carrier the pin, the carrier is extremely securely and permanently attached to the shaft.
- the bristle carrier has an edge-side recess in the form of a circle segment. This creates the possibility of arranging the carrier very tightly or even in the region of the bristle carrier, so that in particular an extremely compact and handy cleaning head of the brush is created.
- the carrier is advantageously arranged directly adjacent to and / or integrated in the bristle carrier.
- the bristles of the carrier have a larger diameter and / or a higher rigidity than the bristles of the bristle carrier.
- the angle of rotation of the bristle holder is set to values in the range of approximately +/- 25 degrees. Due to the cleaning effect of the additional interdental brush, the oscillation angle of the bristle holder can be reduced and thus the effort for the transmission of the bristle holder can be reduced. Another advantage of reducing the angle of rotation of the bristle carrier is that the transmission is also subjected to less stress than at larger oscillation angles.
- Fig. 1a, b show a top view and side view, partly in section, of a simplified embodiment of the brush part of an electric toothbrush according to the invention
- FIGS. 1a and 1b shows a longitudinal section through the brush part of FIGS. 1a and 1b
- FIG 3 shows a cross section through the brush part of FIGS. 1a and 1b in the area of the interdental brush with a first type of attachment
- FIGS. 1a and 1b shows a cross section through the brush part of FIGS. 1a and 1b in the area of the interdental brush with a second type of attachment
- FIGS. 5 and 7 shows a plan view of a further exemplary embodiment, shown in simplified form.
- the figures 1a and 1b of the present application show schematic representations of a top view and a side view of a brush part 24 of an electric toothbrush according to the invention.
- the brush part 24 consists of a hollow support tube 36 which rotatably receives a shaft 75.
- a bristle carrier 38 is rotatably mounted, in which bristles 45 are held which are combined into individual tufts.
- the shaft 75 is coupled in a manner not shown with means which set the shaft 75 in an alternating rotational movement about its longitudinal axis.
- the rotation angle range of the shaft 75 lies in a value range of approximately +/- 35 degrees.
- the axis of rotation of the shaft 75 and the axis of rotation of the bristle carrier 38 are preferably arranged approximately perpendicular to one another.
- the bristle carrier 38 is provided with a bevel gear toothing 46 which meshes with a bevel gear segment 48 arranged at the head end of the shaft 75.
- the alternating rotational movement of the shaft 75 is transmitted to the bristle carrier 38 via this bevel gear.
- the rotational movement of the shaft 75 is identified in FIG. 1a by the reference number 90 and the rotational movement of the bristle carrier 38 by the reference number 91. According to FIGS.
- an interdental brush 100 is arranged at a distance from the bristle carrier 38 and approximately in the region of the brush part 24.
- the interdental brush 100 protrudes approximately at a right angle from the shaft 75, is fixedly connected to it and projects outwards through an opening 108 in the carrier tube 36.
- the bristles 109 of the interdental brush 100 neglecting the pivoting movement, point approximately in the same direction as the bristles 45 of the bristle carrier 38.
- the bristles 109 of the interdental brush 100 are in particular approximately 1-2 mm longer than the bristles 45 of the bristle carrier 38.
- the interdental brush 100 has a carrier 101 in which the bristles 109 are held.
- the bristles 109 are combined in particular to form two bristle groups 102, 103 which are arranged next to one another transversely to the shaft 75.
- the carrier 101 is glued or welded to the shaft 75.
- the carrier 101 has on its underside two pins 104, 105 which are inserted into associated bores 106, 107 in the shaft 75.
- This second type of attachment of the carrier 101 to the shaft 75 can be reinforced by additional gluing or welding.
- the interdental brush 100 Due to the rotationally fixed coupling of the interdental brush 100 to the shaft 75, when the electric toothbrush is switched on, the interdental brush 100 performs an alternating pivoting movement about the axis of rotation of the shaft 75, which is identified by the reference number 92.
- the interdental brush 100 executes a wiper-like pivoting movement with the alternating rotary movement of the shaft 75, which is used in particular to clean the interdental spaces.
- the independent, alternating rotational movement of the bristles 45 of the bristle carrier 38 is retained and is used for cleaning in the used essentially the outer surfaces of the teeth.
- the carrier 101 is fixed to the shaft 75 by means of a pin 120 (FIGS. 5, 6).
- the carrier 101 has a bore 124 in a foot section 134.
- a rib 126 can be arranged at the lower end of the foot section 134.
- the shaft 75 is provided on the head-side end section with a bore 128, in particular a blind bore.
- a front head section 136 of the carrier tube 36 likewise has a bore 130, which can also be designed as a blind bore.
- the central axes of the bores 128 and 130 are identical to the axis of rotation 122 of the shaft 75.
- the head-side end of the shaft 75 can be extended on one side in the form of a web 138 which in the axial direction has a groove which is not visible in the figure and which receives the rib 126 which may be formed on the foot section 134.
- the pin 120 is inserted into the bore 128 and the shaft 75, which is initially located outside the carrier tube 36, is inserted into the open end of the carrier tube 36.
- the interdental brush 100 is inserted into the opening 108 from above and the shaft 75 with the pin 120 in the carrier tube 36 is pushed in the direction of the head-side section 136.
- the pin 120 penetrates the bore 124 of the foot portion 134 of the carrier 101 and is received by the bore 130 in the end portion 136 of the carrier tube 36.
- the bristle carrier 38 can have a recess in the form of a circular segment 132, which extends over an angular range which roughly corresponds to the oscillation angle of the bristle carrier 38. speaks.
- the carrier 1C1 of the interdental brush 100 is then arranged directly adjacent to the bristle carrier.
- Such integration of the carrier 101 in the region of the bristle carrier 38 creates a compact cleaning head with a single bristle field, in which a multiplicity of bristles 45 oscillate around the central axis of the bristle carrier 38 and the bristles 109 of the interdental brush 100 one Exercise oscillating movement about the axis of rotation 122 of the shaft 75.
- the bristles 109 of the interdental brush 100 are longer than the bristles 45.
- they are advantageously made thicker than the bristles 45 or, owing to the choice of material, have a higher rigidity than these.
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE59402922T DE59402922D1 (de) | 1993-03-20 | 1994-03-08 | Elektrische zahnbürste |
EP94910394A EP0689404B1 (de) | 1993-03-20 | 1994-03-08 | Elektrische zahnbürste |
US08/507,372 US5732433A (en) | 1993-03-20 | 1994-03-08 | Electric toothbrush |
US08/929,826 US5850655A (en) | 1993-03-20 | 1997-09-15 | Electric toothbrush |
HK97101901A HK1000346A1 (en) | 1993-03-20 | 1997-10-07 | Electric toothbrush |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP4309035.4 | 1993-03-20 | ||
DE4309035A DE4309035C2 (de) | 1993-03-20 | 1993-03-20 | Elektrische Zahnbürste und Bürstenteil für eine elektrische Zahnbürste |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1994021191A1 true WO1994021191A1 (de) | 1994-09-29 |
Family
ID=6483375
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1994/000704 WO1994021191A1 (de) | 1993-03-20 | 1994-03-08 | Elektrische zahnbürste |
Country Status (6)
Country | Link |
---|---|
US (2) | US5732433A (de) |
EP (1) | EP0689404B1 (de) |
AT (1) | ATE153521T1 (de) |
DE (2) | DE4309035C2 (de) |
HK (1) | HK1000346A1 (de) |
WO (1) | WO1994021191A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997024079A1 (en) * | 1995-12-28 | 1997-07-10 | Philips Electronics N.V. | Dental cleaning device and attachment for such a device |
WO1998026730A1 (en) * | 1996-12-17 | 1998-06-25 | Koninklijke Philips Electronics N.V. | Toothbrush comprising a brush member having bristles of different lengths, and brush member having bristles of different lengths for a toothbrush |
WO1999056660A1 (en) * | 1998-05-05 | 1999-11-11 | Koninklijke Philips Electronics N.V. | Toothbrush comprising a brush member having a bristle field and an interdental bristle field |
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DE4433914A1 (de) * | 1994-09-23 | 1996-03-28 | Braun Ag | Bürstenteil für eine elektrische Zahnbürste |
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US9333059B2 (en) | 2014-02-04 | 2016-05-10 | Stevi Llc | Multi-function electric brush apparatus and systems useful for cleaning teeth and interdental spaces |
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US10206492B2 (en) | 2015-10-09 | 2019-02-19 | Stevi, Llc | Brushes useful for cleaning teeth and interdental spaces |
US10561480B2 (en) | 2016-05-09 | 2020-02-18 | Water Pik, Inc. | Load sensing for oral devices |
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EP3554418B1 (de) | 2016-12-15 | 2021-06-30 | Water Pik, Inc. | Bürstvorrichtung mit beleuchtungsmerkmalen |
CN109223230B (zh) * | 2017-07-11 | 2020-09-25 | Js控股股份有限公司 | 用于电动牙刷的可移除的刷头 |
CN109793589B (zh) * | 2019-03-11 | 2021-01-15 | 上海黑仙智能科技有限公司 | 一种采用三面刷毛的电动牙刷 |
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- 1994-03-08 WO PCT/EP1994/000704 patent/WO1994021191A1/de active IP Right Grant
- 1994-03-08 AT AT94910394T patent/ATE153521T1/de not_active IP Right Cessation
- 1994-03-08 DE DE59402922T patent/DE59402922D1/de not_active Expired - Lifetime
- 1994-03-08 EP EP94910394A patent/EP0689404B1/de not_active Expired - Lifetime
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WO1997024079A1 (en) * | 1995-12-28 | 1997-07-10 | Philips Electronics N.V. | Dental cleaning device and attachment for such a device |
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Also Published As
Publication number | Publication date |
---|---|
US5732433A (en) | 1998-03-31 |
DE4309035C2 (de) | 1999-04-08 |
ATE153521T1 (de) | 1997-06-15 |
DE59402922D1 (de) | 1997-07-03 |
US5850655A (en) | 1998-12-22 |
DE4309035A1 (de) | 1994-09-22 |
EP0689404A1 (de) | 1996-01-03 |
HK1000346A1 (en) | 1998-03-06 |
EP0689404B1 (de) | 1997-05-28 |
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