EP2066260A1 - Brosse à dents électrique et transmission pour une brosse à dents électrique - Google Patents

Brosse à dents électrique et transmission pour une brosse à dents électrique

Info

Publication number
EP2066260A1
EP2066260A1 EP07725049A EP07725049A EP2066260A1 EP 2066260 A1 EP2066260 A1 EP 2066260A1 EP 07725049 A EP07725049 A EP 07725049A EP 07725049 A EP07725049 A EP 07725049A EP 2066260 A1 EP2066260 A1 EP 2066260A1
Authority
EP
European Patent Office
Prior art keywords
cam
electric toothbrush
output shaft
axis
cleaning element
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Withdrawn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
EP07725049A
Other languages
German (de)
English (en)
Inventor
Franz Fischer
Armin Bärtschi
Christian Hilfiker
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.)
Trisa Holding AG
Original Assignee
Trisa Holding AG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=37769409&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2066260(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Trisa Holding AG filed Critical Trisa Holding AG
Priority to EP19201336.5A priority Critical patent/EP3610830A1/fr
Priority to EP20100011026 priority patent/EP2272463A3/fr
Priority to EP07725049A priority patent/EP2066260A1/fr
Priority to EP12007125.3A priority patent/EP2548531B1/fr
Publication of EP2066260A1 publication Critical patent/EP2066260A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B5/00—Brush bodies; Handles integral with brushware
    • A46B5/0095—Removable or interchangeable brush heads
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B9/00—Arrangements of the bristles in the brush body
    • A46B9/02—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
    • A46B9/04—Arranged like in or for toothbrushes
    • 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
    • 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
    • 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
    • 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
    • A61C17/3418—Rotation around the axis of the toothbrush 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
    • 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
    • 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
    • A61C17/3445—Translation along the axis of the toothbrush 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
    • 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
    • A61C17/3409—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
    • A61C17/3472—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 with combined movements of the brush body
    • 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
    • A61C17/3427—Rotation around the axis perpendicular to the axis of toothbrush handle and in the plane defined by the bristle holder

Definitions

  • the present invention relates to a transmission for an electric toothbrush according to the preamble of claims 1 and 23 as well as an electric toothbrush according to claims 8 and 24.
  • An electric toothbrush with a reversibly pivotable cleaning element is disclosed, for example, in US Pat. No. 3,104,409.
  • the electric toothbrush described therein has a base body with an electric motor accommodated therein, the rotational movement of which is converted into a reversingly pivoting movement of an output shaft by means of a transmission.
  • a handle-like brush head is attached, which has a cleaning element equipped with bristles in the head end region.
  • the cleaning element together with the entire brush takes place in the attached state of the electric motor - that is, in an active Operating state - a reversing pivoting movement about the output axis extending substantially parallel to the longitudinal axis of the brush attachment.
  • This electric toothbrush also has an electric motor arranged in a body designed as a handle, which, in the active operating state, provides a rotational movement which is converted by means of a gear into a reversingly pivoting movement of an output shaft.
  • a brush head with a arranged on the head area bristle-occupied cleaning element can be plugged onto the base unit.
  • a movable in the brush attachment axle extension with a deflecting converts by an end-side engagement of the deflection in a guide slot of the cleaning element bearing hub the pivotal movement of the output shaft in a reversing pivotal movement of the cleaning element.
  • the cleaning element associated with the pivot axis extends at right angles to the output axis.
  • the reversing pivotal movement of the substantially circular disc-shaped hub with the cleaning element attached thereto is also referred to as a reversibly rotating or reversing oscillating movement.
  • An electric toothbrush in which, in the active operating state, a cleaning element arranged on a brush attachment carries out a reversing translatory reciprocating movement is disclosed, for example, in EP-A-1639914. It is by means of a thrust crank-type transmission between a drive axle of an electric motor and a driven-side push crank the entire Brush head reciprocated parallel to its longitudinal axis.
  • an oral hygiene device in particular an electric toothbrush is described, arranged on a brush attachment cleaning element in the active operating state performs a combined movement, which consists of a reversing pivotal movement about a driven axis which is substantially parallel to the longitudinal axis of the brush attachment, and a reversing translational reciprocating motion of the output shaft in the direction of the longitudinal axis of the brush attachment composed.
  • a used here for reaching gear has two eccentrically arranged on a gear cam, which converts the rotational movement provided by the electric motor in the attached state in the two components of motion, on the one hand reversing pivoting and on the other hand translationally reciprocating, and transmits via a pickup on the output shaft , Due to the specific geometric design of the two cams, the two components of motion oscillate at the same frequency as is predetermined by the gear on which they are fixed.
  • Object of the present invention is therefore to provide a transmission and associated movement for the output shaft or the associated cleaning element of an electric toothbrush or an electric toothbrush with such a transmission, by which it is possible, a gentle for the gums, particularly effective Provide cleaning movement of the cleaning elements in a cost-effective manner.
  • the transmission according to the invention for an electric toothbrush serves to transmit and transform a rotational movement, which is provided by an electric motor on a drive axle, into a movement of an output shaft, which in turn is intended to drive a movable cleaning element of the electric toothbrush.
  • the transmission has a preferably eccentrically with respect to its driving axis rotatably arranged cam and a corresponding, with the output shaft rotatably connected to customers.
  • the output shaft and the cleaning element connected to it performs a preferably fast movement with a small deflection.
  • the ratio of the distance from the longitudinal central axis of the output shaft to the longitudinal center axis of the drive axle in the region of the pickup to the distance between the longitudinal center axis of the cam driving axis and the longitudinal center axis of the cam at least 10: 1.
  • the speed of the movement is achieved, for example, by using an electric motor, which provides a high speed between 2000 rpm and 12000 rpm in unloaded operation.
  • the eccentric gear formed in accordance with the invention has a relatively simple structural design and is equipped with a plurality of components which are preferably to be processed by injection molding, which permits a particularly cost-effective production overall.
  • a further object of the present invention is to provide a transmission and an associated movement sequence for the output shaft or the associated cleaning element of an electric toothbrush or an electric toothbrush with such a transmission, by which it is possible for the manufacturer, provided by an electric motor continuous rotational movement in one direction of rotation in a simpler, more cost-effective and more flexible way to better match the desired cleaning movement of a cleaning element of the electric toothbrush.
  • the movement of the cleaning element should preferably allow a laterally reversing pivoting movement and / or a translational reciprocating movement in the axial direction of the output shaft in all transmission variants.
  • a further object of the invention is to provide a brush adapted optimally for the corresponding embodiment of the transmission.
  • the invention is intended to provide the desired movement of the cleaning element via an inventive chain of action electric motor - transmission - output shaft - Aufsteckmechanismus brushhead - cleaning element - bristles available.
  • the inventive transmission which is the conversion of a continuous rotational movement in a rotational direction, which is provided by an electric motor on its drive axle, in a movement for driving a cleaning element is formed in a variant embodiment as a multi-stage transmission. It has at least one drive-side first gear stage and at least one output-side second gear stage, wherein at least one gear stage is designed as a reduction and at least one gear stage as a translation. In this way, it is ensured that the movement forwarded by the multistage transmission with respect to speed and torque manufacturer can be easily and flexibly adapted on the one hand to the specifications of the electric motor and on the other hand to the desired movement properties of the cleaning element.
  • the gear ratio is equipped with a cam and a cam extension, which make it possible to provide both a reversing pivoting movement component and a reversing translational movement component or a combination of the two for the output axis and thus for the cleaning element.
  • Another object of the present invention is to provide an electric toothbrush with a transmission in which the transmission allows a structurally simple, low-noise and freely predeterminable motion transmission.
  • This electric toothbrush is equipped with a base body which forms a handle and accommodates an electric motor and a transmission, a neck adjoining the base body and a head arranged opposite the neck on the neck. At the top of a connected to an output shaft, movable cleaning element is arranged.
  • the transmission has a cam and a pickup operatively connected to the output shaft.
  • the cam preferably has a cross section in the form of a circle or a rounded n-corner, where n is an odd positive number.
  • gear ratios can be realized equal and especially greater than 1: 1 due to the specific cross-sectional shapes of the cam.
  • the structure of the transmission is relatively simple and due to the sliding tap it comes in the active mode only to a low noise.
  • FIG. 1 is a perspective view of a designed as a handle body of a
  • Electric toothbrush with a tapered end portion from which protrudes an output shaft on which a brush attachment shown in Figure 2 can be plugged.
  • FIG. 2 shows a perspective view of an electric toothbrush with the base body shown in FIG. 1 and a brush attachment plugged onto the output shaft with a bristle-mounted cleaning element;
  • FIG 3 shows a perspective view of a further embodiment of the main body of the electric toothbrush according to the invention with a spigot shaft side in the conical end region arranged on the spigot for rotationally fixed Recording a shown in Figure 4, another embodiment of the brush attachment.
  • FIG. 4 shows a perspective view of an inventive electric toothbrush with the base body shown in FIG. 3 and an attached brush head with a reversibly oscillatable cleaning element;
  • Fig. 5 in a side view of a part of the inner life of the inventive electric toothbrush, including a
  • FIG. 6 is a perspective view of a translation of the inventive transmission with a crown wheel, on which a cam is arranged, which is scanned by a fixedly connected to the output shaft, clamp-shaped consumer.
  • FIG. 7 is a perspective view of the pickup shown in FIGS. 5 and 6; FIG.
  • FIG. 8 is a perspective view of the crown wheel with a cam of known geometry and arrangement.
  • Fig. 9 in a perspective view a part of an embodiment of the inventive Getriebes with the crown wheel, on the toothed side surface eccentrically with respect to the axis of rotation of the crown wheel, a triangular-shaped rounded cam is arranged;
  • FIG. 10 is a perspective view of a part of another embodiment of the inventive transmission with a triangular cam which is arranged concentrically with respect to the axis of rotation of its associated crown wheel.
  • FIG. 11 is a perspective view of part of a further embodiment of the transmission according to the invention with a pentagonally rounded cam mounted concentrically with respect to the axis of rotation of its associated crown wheel;
  • FIG. 12 is a perspective view of another embodiment of the transmission of the invention with a crown wheel, on the toothed side surface of a cam and above the cam, a cam extension are arranged, both of which are scanned by the consumer;
  • Fig. 13 is a side view of the translation shown in Fig. 12;
  • FIGS. 12 and 13 are perspective views of the crown wheel shown in FIGS. 12 and 13 with a triangularly rounded cam and a above the cam, eccentrically arranged with respect to the rotational axis of the crown wheel cam extension, which has a circular cross-section and is arranged eccentrically with respect to the axis of rotation of the crown wheel;
  • FIG. 15 is a perspective view of another embodiment of the crown wheel with a pentagon-shaped rounded cam and an eccentrically mounted with respect to the axis of rotation of the crown wheel, triangular rounded cam extension.
  • FIGS. 16-19 show, in graphical representations, the deflection of the output axis as a function of time or the angle of rotation of the crown wheel for different ones, in each case to the left of the graphical ones
  • Fig. 20 is a further graphical representation of the deflection of the output shaft for an adjacent embodiment of a
  • FIG. 21 shows a perspective view, in particular a top view, of an embodiment of a brush-on brush body
  • FIG. 22 shows a perspective view, in particular a bottom side view, of the brush attachment body shown in FIG. 21;
  • FIG. 21 shows a perspective view, in particular a top view, of an embodiment of a brush-on brush body
  • FIG. 22 shows a perspective view, in particular a bottom side view, of the brush attachment body shown in FIG. 21;
  • FIG. 23 shows in a perspective view, in particular a top view, a brush attachment with the brush attachment body shown in FIG. 21 and FIG. 22;
  • FIG. 24 shows in a perspective view, in particular a bottom side view, the brush attachment shown in FIG. 23;
  • FIG. 25 shows a sectional view of the embodiment of a brush head with a bristle-tipped head shown in FIGS. 23 and 24;
  • FIG. 26 is a sectional view of another embodiment of a brush attachment with a reversibly oscillatable cleaning element already shown in FIG. 4; FIG.
  • FIG. 27 shows a perspective view, in particular a top view, of a further embodiment of a brush attachment, in which the cleaning element is arranged on a support shaft which can be moved in the interior of the neck;
  • FIG. 28 is a perspective view, in particular a bottom side view, of the brush attachment shown in FIG. 27;
  • FIG. Fig. 29 in plan view the head of a brush attachment with respect to the neck movable and stationary cleaning elements;
  • Fig. 30 is a partial sectional view of the head of the brush head shown in Fig. 29;
  • Embodiment of the head of the brush attachment with a movable relative to the neck and a stationary against the neck cleaning element;
  • Fig. 32 is a plan view of the top of the head of the brush head shown in Fig. 31;
  • FIG. 33 shows in plan view the upper side of the head of a further embodiment of a brush attachment with bundles of bristles which protrude from elongated crescent-shaped base surfaces whose longitudinal extensions extend approximately in the longitudinal direction of the head;
  • FIG. 34 shows in plan view the upper side of the head of a further embodiment of a brush head with bundles of bristles, which project from elongated, sickle-shaped base surfaces whose longitudinal extensions extend on the one hand approximately in the longitudinal direction of the head and on the other hand extend approximately in the transverse direction of the head;
  • FIGS. 35-38 in plan views different embodiments reversibly oscillatable Cleaning elements with different arrangements of bristle bundles
  • Figs. 39-41 show in plan views of the tops of heads different embodiments of Figs.
  • FIG. 43 shows a side view of the inner life of the electric toothbrush according to the invention shown in FIG. 42;
  • FIGS. 42 and 43 shows a perspective view of the inner life of the toothbrush according to the invention, shown in FIGS. 42 and 43, without showing the inner frame;
  • FIGS. 45-48 show, in different views, a further pickup of the transmission for the embodiment of the electric toothbrush according to the invention shown in FIGS. 42 to 44;
  • Figs. 49a and 49b in a perspective view and a side view of a substantially cylindrical cambered cam intended to be eccentric with respect to a driving axis of the electric motor;
  • Fig. 50 is a perspective view of another embodiment of a cam having a rounded, substantially triangular cross-sectional shape
  • FIG. 51 shows in a diagram the dependence of the deflection angle of the output shaft on the rotational angle of the drive axle during a complete rotation of the drive axle using the cylindrical cam shown in FIG. 49;
  • Fig. 50 shown cam having a substantially triangular, rounded cross-section.
  • FIG. 53 is a perspective view of the interior of another embodiment of the electric toothbrush according to the invention, in which the drive axle and the output shaft extend inclined relative to one another;
  • FIG. 54 is a further perspective view of the interior shown in FIG. 53;
  • FIG. FIG. 55 shows, in a further perspective view, the inner life shown in FIGS. 53 and 54 without showing the inner frame;
  • FIG. 56 shows a side view of the inner life shown in FIGS. 53 to 55 without showing the inner frame.
  • FIGS. 1 to 4 main bodies 10 of electric toothbrushes 12 according to the invention are shown, onto which brush heads 14, which are shown for example in FIGS. 2 and 4, can be plugged.
  • the main body 10 has an im
  • the set-up section 18 serves for a safe installation of the electric toothbrush 12 on a solid base, for example a loading or base station. It comprises a bottom which is not visible in FIGS. 1-4 and which may be designed, for example, flat, with an erecting formation for accommodation in the loading or base station or with other functional formations.
  • the actuating portion 20 extends approximately over two-thirds of the total length of the base body 10 and is in the use of the electric toothbrush 12 substantially of the palm of a user enclosed.
  • On an upper side 24 it is equipped with externally accessible, soft elastic material shaped actuators 26 for controlling operating conditions of the electric toothbrush 12, for example, on and off, a continuous or discrete adjustment of operating conditions or operating speeds, etc. equipped.
  • In the actuating portion 20 are on the surface otherwise formed by a hard material soft elastic adhesive elements 28, which prevent slipping of the user's hand when using the electric toothbrush 12, respectively.
  • the actuating section 20 preferably tapers continuously in the direction of the attachment section 22.
  • the Aufsteckabites 22 serves the mechanical coupling of the brush attachment 14 to the main body 10 of the electric toothbrush 12. It comprises in the embodiment of the base body 10 shown in FIG. 1 an end portion of an output shaft 30 and in the embodiment shown in FIG. 3 additionally a connection piece 32 for rotatably receiving the brush attachment 14.
  • the brush attachment 14 has a neck 34 whose free end region is predetermined for attachment to the slip-on portion 22 formed on the base body 10.
  • the neck 34 is provided as a stick-like extension with a rounded cross-section smaller than that of the body 10.
  • the adjusting element 36 serves to select a pivoting range of a head 38 of the brush attachment 14 movable, in this embodiment, in particular reversibly rotatably arranged cleaning element 40th
  • the head 38 forms a free end region of the brush attachment 14 that adjoins the neck 34, generally widening in relation to the neck 34. It serves to receive or store cleaning elements 40, which are shown in FIGS. 2 and 4 Embodiments on the top 24 with bristles 42 and bundles of bristles 42 are occupied.
  • the head 34 may also be preferably equipped, for example, with a tongue cleaner preferably made of soft material.
  • the electric toothbrush 12 the cleaning member 40 is fixed to the brush 14 and leads into an active operating state of the electric toothbrush 12, together with the entire brush 14 transmitted from the output shaft 30 reversing pivoting movement.
  • the cleaning element 40 is mounted pivotably with respect to the head 38 and the neck 34.
  • the cleaning element In the active operating state of the electric toothbrush 12, the cleaning element carries out a reversingly rotating movement about an axis which runs almost at right angles to the longitudinal axis of the neck 34.
  • both sequences of movements are based on a reversing pivoting movement of the output shaft 30.
  • a so-called inner frame 46 is arranged inside the main body 10 of the electric toothbrush 12.
  • the inner frame 46 is shown in a side view of a portion of the interior of the electric toothbrush 12 in FIG. The illustrated part extends from the outermost, brush-side end of the output shaft 30 to about the longitudinal center of the actuating portion 20.
  • an inventive transmission 48, a drive unit 50 and a control unit 52 are arranged, the latter two in Fig. 5 only partially visible are.
  • the control unit 52 is partially disposed on the upper side of the inner frame 46 and includes a printed circuit board 54 having disposed thereon components and a switching element 56 for switching on and off of the active operating state of the electric toothbrush 12.
  • the switching element 56 is corresponding to the actuating elements 26 which are accessible from the outside are arranged on the base body 10, formed.
  • the actuating elements 26 are preferably formed of a soft elastic material and allow it to exert actuating forces on the switching element 56 when actuated.
  • the drive unit 50 comprises an energy store, not shown in FIG. 5, in the form of one or more Batteries or a rechargeable battery or a power supply, which is electrically connected to an electric motor 58, respectively.
  • the electric motor 58 provides on its associated drive axle 60 a continuous rotational movement in a rotational direction through 360 °.
  • the rotational speed of the electric motor is - with connected gear 48 and plugged brush attachment 14 - between 1000 revolutions per minute (RPM) to 15000 U / min, preferably 3000 U / min to 8000 U / min 8000 rpm to 12000 rpm.
  • RPM revolutions per minute
  • the operating voltage for feeding the electric motor 58 is 1.3 V to 3 V, with a current flow in the above-defined unloaded operation between 300 mA to 1500 mA, preferably 400 mA to 1200 mA.
  • the transmission 50 is followed by the transmission 48 according to the invention on the inner frame 46.
  • the transmission 48 transmits and converts the electric motor
  • Movement can be a reversing pivoting
  • connection piece 32 is provided with substantially parallel to the output axis 30 extending edges to - as already mentioned - a non-rotatable Arrangement of the brush attachment 14 on the body 10 to ensure.
  • the inner frame 46 For storage of the output shaft 30 on the inner frame 46, the inner frame 46 is provided on the output shaft side with a corresponding, not visible in the figures Achsausnaturalung.
  • the diameter of the Achsausnaturalung is chosen so that the output shaft 30 can move freely translational and / or rotating therein, the penetration of liquids and solids but is largely excluded.
  • the transmission 48 comprises in addition to the visible in Fig. 5 drive gear 68, which rotatably on the drive axle 60 of the electric motor 58 is arranged, in particular in Fig. 6 well visible crown gear 70 with a toothed side surface arranged on the cam 72 and a particular shown in Fig. 7, with the cam 72 interacting customer 74.
  • the Output shaft 30 rotatably disposed.
  • the output shaft 30 is in turn rotatable and possibly also displaceable in a driven axle sleeve 75, which is visible in Fig. 6, stored.
  • the spur gear drive gear 68 is engaged with not shown teeth of the crown gear 70 for simplicity reasons and forms due to the smaller number of teeth of the drive gear 68 relative to the crown gear 70 a reduction 76.
  • the reduction 76 is a first gear stage of the transmission 48 in the form of a crown gear .
  • the reduction ratio is 0.2 to 0.9, preferably 0.4 to 0.6, ie, the speed of the crown gear 70 is reduced by said reduction ratio relative to the engine speed and the torque increases accordingly.
  • the drive axle 60 of the drive gear 68 is at least approximately at right angles to the crown gear axle 78 mounted in the inner frame 46 (see FIG. 6).
  • the drive axle 60 is positioned parallel to, but not coaxially with, the output shaft 30.
  • the drive axle 60 and the output shaft 30 must also enclose the same angle. For reasons of ergonomics, an angle of less than 20 °, preferably between 3 ° and 10 °, is preferred.
  • the inner frame 46 is modified relative to the variant shown in FIG. 5 so that the output shaft 30, the output shaft sleeve 75 and the pickup 74 are at an angle to the drive axis 60.
  • the drive shaft 60 of the drive gear 68 is, as in the embodiment shown in Figure 6, also oriented approximately at right angles to the mounted in the inner frame 46 Kronenradachse 78.
  • the cam 72 can be manufactured as a separate component from the crown gear 70. This allows the
  • the pickup 74 is for this purpose, for example, to be rotated by 180 ° about its longitudinal axis and provided with a corresponding recess through which the cam 72 arranged on the crown wheel 70 in a rotationally fixed manner engages with sufficient clearance.
  • the cam 72 On the toothed side surface of the crown wheel 70 of the cam 72 is firmly formed or can be firmly connected as an additional part of the crown wheel 70. Consequently, a complete revolution of the crown wheel 70 by 360 ° also leads to a complete rotation of the cam 72.
  • the cam 72 may be designed in various forms in shape and arrangement with respect to the crown wheel axis 70, as shown by way of example in FIGS. In its various embodiments, the cam 72 has in each case at least one cam wall 80, which extends substantially parallel to the crown wheel axis 78 and at right angles to the toothed side face of the crown wheel 70.
  • the pickup 74 clampingly engages the cam 72 and slidingly scans the cam wall 80 of the cam 72 by means of two rounded scan edges 82 at a fixed distance from each other. Due to the fixed spacing of the scanning edges 82 and the cross-section of the cam 72 deviating from a circular shape or, if appropriate, its eccentric arrangement with respect to the crown wheel axis 78, the pickup 74, together with the rotationally connected output shaft 30, is reversibly pivoted about its longitudinal center line within an angular range of less than 360 ° , Due to the pivotal movement of the pickup 74 and the thus different spacing of the scanning edges 82 from the crown wheel 70, it may be advantageous to slightly camber or shape the cam 72 in the direction of the crown wheel axis 78.
  • Drive axis 60 in the region of the pickup 74 to the distance between the longitudinal center axis of the cam 72 driving crown gear axis 78 and the longitudinal center axis of the crown gear 70 arranged cam 72 (ie the eccentricity of the cam 72) is at least 10: 1.
  • the cleaning element 40 is either fixedly arranged on the brush attachment 14 and the brush attachment 14 is attached directly to the output shaft 30 in a rotationally fixed manner - as in the embodiment of the electric toothbrush 12 shown in FIG. 2 - or indirectly via an attachment axis with a deflection element to the output shaft 30 is connected - as in the embodiment of the electric toothbrush 12 shown in FIG. 4 - the reversing pivotal movement of the output shaft 30 is transmitted to the cleaning element 40.
  • the output shaft 30 itself has a nearly constant diameter over its entire length, which is between 2 mm and 6 mm, preferably between 2.5 mm and 4 mm.
  • the output shaft 30 is provided on both sides with flats 84 in its end.
  • the flats 84 have the task, in cooperation with corresponding mating surfaces of the brush attachment 14 and the Aufsteckachse to transmit torque.
  • the remaining cross section the output axis 30 is in the region of the flats 84 0.5 mm to 3.5 mm, preferably 1.5 mm to 2.5 mm.
  • the length of the flats 84 along the output axis 30 is between 8 mm and 14 mm, preferably between 10 mm and 12 mm.
  • shoulders 86 are formed in the transition from the flattened cross section of the output shaft 30 to its full circular cross section.
  • the shoulders form an angle with the longitudinal center line of the output shaft 30 from 30 ° to 60 °, preferably from 40 ° to 50 °.
  • the beginning of the shoulders 86 is positioned about 15 mm to 22 mm, preferably 17.5 mm to 19.5 mm, measured from a face side 87 of the main body 10 (without connecting piece 32).
  • notches 88 mediate the brush attachment 14 and the slip-on axis, respectively a stop in the axial direction and thus prevent unwanted removal or uncontrolled falling off of the brush attachment 14th
  • the notches 88 are disposed at a distance of about 12 mm to 20 mm, preferably 15 mm to 17 mm from the end face 87. They preferably have a depth of 0.2 mm to 0.8 mm, preferably from 0.35 mm to 0.65 mm. A bottom of the notches 88 has a width of about 0.3 mm to 1.5 mm, preferably 0.7 mm to 1.1 mm.
  • the output shaft 30 is rounded brush head side in its end to reduce the risk of injury and to facilitate the assembly process when attaching the brush attachment 14.
  • the output shaft 30 is preferably made of a metal, such as stainless steel, and has a free length from the end face 87 measured from 25 mm to 35 mm, preferably from 28 mm to 32 mm.
  • This distance is between 0.2 mm and 0.8 mm, preferably between 0.4 mm and 0.6 mm.
  • crown wheels 70 with cams 72 arranged thereon will now be described below with reference to FIGS. 8-11.
  • the teeth of the crown wheels 70 are not drawn for reasons of simplification and only symbolically represented by a ring.
  • each cylindrical Kronach sleeves 90 are formed on the cam 72 opposite the toothed side surface of the crown gear 70 . They serve to support the crown wheel 70 along the crown gear axis 78 relative to the inner frame 46.
  • a cam 72 In Fig. 8, an embodiment of a cam 72 is shown.
  • This cam 72 has a circular to slightly elliptical (with a ratio of Main vertex to side vertex of 1.01: 1 to 1.1: 1 preferably 1.03: 1 to 1.07: 1) cross-section and is eccentric with respect to the Kronenradhülse 90 and not shown Kronenradachse 78 arranged.
  • the distance from the crown gear axis 78, which has the function of a rotation axis for the crown gear 70, to a center axis of the cam 72 is 0.5 mm to 3.0 mm, preferably 1.5 mm to 2.5 mm.
  • FIGS. 9 to 11 show embodiments of the cam 72 according to the invention.
  • Cross-sections of the cams 72 each have an all-rounded shape of an n-corner, where n is an odd positive number.
  • n is an odd positive number.
  • the cam walls 80 of the cams 72 are always rounded and also include the corners of the respective n-corner shape to allow a sliding scan through the sensing edges 82 of the pickup 74.
  • the radius of curvature for the corners is 1.32 mm for the triangular section and 0.5 mm for the pentagonal section.
  • the radius of the rounding of the sides is 7.27 mm in the triangular section and 14.44 mm in the pentagonal section.
  • the rounding radius for the corners decreases as n increases, ie approaches 0 mm, and the radius for rounding the sides increases as n increases.
  • the cross-sectional shapes of the cam 72 must be designed according to each other due to the fixed distance of the scanning edges 82 and in particular have a radius.
  • the cross sections of the cams are designed as a rounded regular n-corner.
  • the cam walls 80 of the cams 72 are each formed such that each bounded by the curve walls 80, in a cross-sectional plane of the cam 72 through the center of its cross-sectional shape extending cross-sectional length has approximately the same length.
  • the substantially n-corner cams 72 may be arranged eccentrically with respect to the crown gear axis 78 as well as concentrically with respect to the crown gear axis 78 as shown in FIGS. 10 and 11.
  • a complete reversal of the crown wheel 70 by 360 ° results in a n-fold reversing pivoting of the pickup 78 and the associated output shaft 30.
  • n-shaped cam 72 In an eccentric arrangement of an n-shaped cam 72 is a "large" reversing pivoting of
  • Cam 72 may be e.g. a dominant Grundverschwenkung be superimposed with a "large” swivel range of several "smaller” pivoting movements. In this case, the output shaft 30 pivots exactly once per revolution of the
  • Cam 72 and n times due to the n-corner configuration of the cam 72 This arrangement will be described in detail below in connection with FIG.
  • n> 1 ie for cams 72 with 3, 5, 7... -Shaped cross-sectional shapes
  • the combination of the cam 72 with the pickup 74 forms an output-side second gear stage in the form of a gear-less gear ratio 92 (see, for example, FIG. 6).
  • the corresponding transmission ratios 3, 5, 7 ... cause an increase in the pivoting frequency of the pickup 74 relative to the rotational speed of the crown wheel 70 by just these said ratios.
  • the deflection of the pickup 74 causes a total (or total) depending on the specific cross-sectional shape of the cam 72, a maximum deflection of the pickup 74 and the associated output shaft 30 between 1 ° and 23 °, preferably between 3 ° and 15 °, especially preferably about 5 ° to 12 ° between its maximum deflection positions (ie the full deflection angle in a movement from the very left outside to the far right outside).
  • a maximum deflection of the pickup 74 and the associated output shaft 30 between 1 ° and 23 °, preferably between 3 ° and 15 °, especially preferably about 5 ° to 12 ° between its maximum deflection positions (ie the full deflection angle in a movement from the very left outside to the far right outside).
  • the second gear stage is preferably housed in the main body 10 of the electric toothbrush 12.
  • at least one of the two gear stages is arranged in the brush attachment 14.
  • this particular embodiment by means of cam 72 and pickup 74 is only an example and other means not shown here can be used to implement the at least second, translating gear stage.
  • this second gear is not by means of toothing, but by means Realized curves or cams and correspondingly shaped customers.
  • FIG. 12 similar to the representation in FIG. 6, a structural unit consisting of the crown wheel, the cam 72, the pickup 74 and the associated output shaft 30 is shown.
  • the Kronach sleeve 90 shown in FIGS. 8 to 11 is replaced by a cam extension 94.
  • This cam extension 94 passes through a Abtastausbloodung 96 in the pickup 74.
  • the Abtastausbloodung 96 has a limited by a scan wall 98 rounded cross-section, within which the cam extension 94 can perform as low-friction rotation about the Kronenradachse 78 and at the same time a pivoting movement of the pickup 74 about the output axis 30 is enabled.
  • the cam extension 94 in the embodiment shown in Figs. 12 and 13 has a circular to slightly elliptical cross section (having a peak to peak ratio of 1.01: 1 to 1.08: 1, preferably 1.02: 1 to 1.05: 1) arranged eccentrically with respect to the crown wheel axis 78.
  • the distance from the crown gear axis 78, which has the function of a rotation axis, to a center axis of the cam extension 94 is 0.1 mm to 1.5 mm, preferably 0.2 mm to 0.8 mm.
  • FIG. 13 the arrangement shown in FIG. 12 is again shown in a side view, wherein in particular the passage of the cam extension 94 through the scanning recess 96 can be clearly seen.
  • cam 72 All in terms of the cam 72 mentioned features in terms of its cross-sectional shape and the arrangement relative to Kronenradachse 78 can also on the cam 72
  • Cam extension 94 are transmitted. Specifically, this means that the cam extension 94 may be provided with a rounded, substantially n-corner-shaped cross section, where n is an odd positive
  • the cam extension 94 can be arranged both eccentrically, as well as concentrically or coaxially with respect to the crown gear axis 78.
  • the cam extension 94 can be arranged both eccentrically, as well as concentrically or coaxially with respect to the crown gear axis 78.
  • Cam extension 94 formed such that each of its outer wall is bounded on two sides, in a cross-sectional plane of the cam extension 94 through the center of its cross-sectional shape extending cross-sectional length is at least almost the same length.
  • FIG. 20 An example of a cam extension 94 having a triangularly rounded cross-section that is eccentric with respect to the crown wheel axis 78 is shown in FIG.
  • the cam extension 94 is combined with a pentagon-shaped rounded cam 72 on the crown wheel 70.
  • the cam 72 is here arranged concentrically or coaxially with respect to the crown wheel axis 78.
  • a movement pattern that can be generated thereby on the output axis 30 will be explained below in connection with FIG. 20.
  • cams 72 shown in FIGS. 14 and 15 cylindrically and to arrange them concentrically with respect to the crown wheel 70.
  • the output shaft 30 is merely reversibly translationally reciprocated and not additionally reversibly pivoted.
  • the cylindrically shaped, concentrically arranged cam 72 stabilizes the pickup 74 laterally and prevents the pivoting movement.
  • the cam extension 94 is formed cylindrically and concentrically and stabilizes the pickup 74 in the direction of the output shaft 30 and prevents the translational movement.
  • a reversing translational movement component of the cleaning element 40 can be realized, for example, in the embodiment of an inventive electric toothbrush 12 shown in FIG. It should be noted, however, that in this case appropriate safety measures must be taken so that no parts of the body or skin areas of the user can be trapped by the brush body 14, which lifts off from the base body 10.
  • Such a safety measure is, for example, the insertion of a bellows-type hose between the end portion of the Aufsteckabêts 22 of the body 10 and the free end portion of the neck 34 of the brush attachment 14 or similar means of soft elastic material, which minimize the resulting gap by the translational movement of the brush attachment 14.
  • Another safety measure is to let the brush attachment 14 end within the body 10 and thus to ban the risk of entrapment.
  • Crown gear 70, the cam 72, the Kronach sleeve 90 and the cam extension 94 can be achieved.
  • the ordinate in each case represents a deflection angle ⁇ during the pivoting of the output axis 30.
  • the ordinate also represents a deflection length s.
  • the time t or the corresponding rotational angle ⁇ of the crown wheel 70 (or the drive axle 60) is plotted on the abscissa.
  • the deflection angle ⁇ of the output shaft 30 is shown as a function of the rotational angle ⁇ of the crown wheel 70 or the time for a substantially pentagonal cam 72 arranged concentrically with respect to the crown wheel axis 78.
  • the deflection angle ⁇ passes through five sinusoidal periods in one revolution of the crown wheel 70. Consequently, there is a transmission ratio of 5.
  • FIG. 19 shows a movement pattern for the case of a substantially triangular cam 72 already mentioned in connection with FIG. 17, which is mounted eccentrically with respect to the crown wheel axis 78.
  • the cam 72 is displaced along an angle bisector, from the center of the circumference of the cam cross section in the direction of a corner. Consequently, the functional dependence of the deflection angle ⁇ on the rotational angle ⁇ of the crown wheel 70 (or the drive axis 60) essentially results from a superimposition of the functional dependencies illustrated in FIGS. 16 and 17.
  • Such a function curve leads to a jitter-like deflection of the output shaft 30.
  • the abscissa in this case represents one
  • Displacement length s of the output axis 30 Displacement length s of the output axis 30. Also in this case, the movement pattern for a complete
  • the reversely pivoting movement component causes a sinusoidal variation of the deflection angle ⁇ for three periods within one crown wheel revolution.
  • the cam extension 94 with a cross-sectional geometry and arrangement as the cam 72 shown in FIG. 16, a reversing translational reciprocating motion along the output axis 30. Due to the frequency relationships, an operating point in this diagram initially goes through 1.5 deflection periods in a forward movement of the deflection angle ⁇ and on the return movement in mirror image with respect to the abscissa the remaining 1.5 periods. In the selected representation of FIG. 20, a closed curve thus results with three almost elliptical curve elements. Also in this case, a variety of movement patterns by varying the cross sections of the cam 72 and the cam extension 94 and the choice of different positions of the cam 72 and the Cam extension 74 with respect to the Kronenradachse 78 can be achieved.
  • the remark "simple" means that exactly one complete swing period for the deflection angle ⁇ is traversed per complete revolution of the crown gear 70.
  • the variable n is to be replaced by an odd positive number, for example 3, 5, 7, 9 and so on. From the above table it can be seen that a large number of pivoting movements as well as reciprocating movements can lead to complex movement patterns of the output shaft 30 and the cleaning elements 40 connected thereto. These can be adapted to provide optimal cleaning of the teeth and dental interstices, as well as improved circulation of the gums by means of appropriate massage movements. Intensive tests with cleaning robots have shown that high-frequency movements with smaller deflections achieve the best cleaning values, especially in the interdental area. In particular, above-described overlapping movement patterns have proven to be useful. In particular, it has been possible to perfect the movement patterns of the so-called bass method, which is used for manual toothbrushes, with the method described above.
  • the pivoting movement of the movable cleaning element 40 is at a frequency between 3000 U / min and 15000 U / min, preferably from 8000 U / min to 12000 U / min, more preferably between 8'000 and 10'000 U / min. realized.
  • the translational reciprocation of the cleaning element 40 is at a frequency between 1000 rpm and 12000 rpm, preferably between 2000 rpm and 4000 rpm or between 8000 rpm and 12000 rpm.
  • All of the movements of the output shaft 30 described above can in particular be transferred to the brush heads 14 in FIGS. 21-25 and 27-31.
  • the brush attachment 14 shown in FIG. 26 is suitable, above all, for reversely pivoting movements of the output shaft 30 without interference with a translational reciprocating movement of the output shaft 30.
  • gears 48 it should be noted that the play between the teeth of the drive gear 68 and the crown gear 70 and between the cam 72 and the scanning edge 82 and the cam extension 94 and the Abtastrisen 98 is kept as low as possible to beat in the system and To keep a noise nuisance outside the body 10 as low as possible.
  • the intermeshing elements may be provided with a lubricant, such as silicone grease, to reduce potential frictional effects. It is likewise possible to equip the components of the transmission 48, which are generally made of a hard material, completely or at certain contact or bearing points with a damping plastic in order to achieve the most uniform and low-noise conversion of the movements.
  • the output shaft 30 and the drive shaft 60 may be designed in several parts, wherein the individual part are connected to each other via coupling elements of a damping plastic. Due to this allowed torsional movements of the axes is a softer Start of the movements possible and a risk of injury from abrupt movements is reduced.
  • a "soft bearing” can also be designed without interrupting the output shaft 30, for example by making the connection between the pickup 74 and the output shaft 30 soft, that is to say applying a soft layer between the two elements 74, 30.
  • For noise reduction also be designed corresponding bearings that dampen the vibration transmission via the output shaft 30.
  • the scanning edges 82 or the scanning walls 98 can be coated with a soft-elastic layer or to produce the entire pick-up 74 from a somewhat softer material.
  • existing hollow or resonance chambers can be filled with sound-absorbing material for noise reduction in the interior of the body.
  • Brush head body 102 of a brush attachment 14 for example, on the main body shown in Fig. 1
  • the brush body 102 is preferably by means of produced by injection molding. It gives the brush attachment 14 a basic stability and serves as its backbone. In the neck-side end region of the brush head body 102, an opening 104 of an axle receptacle 106 is visible, in which the flattened end region of the output shaft 30 can be inserted.
  • the axle receptacle 106 is equipped with two not visible in the illustrations cryabflachept, which are formed according to the flats 84 of the output shaft 30, and the interaction of which ensures the transmission of torque from the output shaft 30 to the brush attachment 14.
  • the opening 104 is preceded by a cylindrical holding recess 107 on the end region side.
  • the holding recess 107 serves to allow the brush attachment 14 to be placed on a corresponding holder for storage in a base station.
  • the retaining recess 107 occupies a substantial part of the shark cross section and has a longitudinal depth of less than 10 mm, preferably less than 5 mm.
  • the axle receptacle 106 and the retaining recess 107 are preferably arranged coaxially with one another.
  • the retaining recess 107 can still cover a second function: by a corresponding configuration, a pivotable brush attachment 14 can be formed, which can also be plugged onto the main body 10 shown in FIGS. 3 and 4.
  • an outer shell of the brush head 14 surrounding the retaining recess 107 surrounds the connecting piece 32 in an apron-like manner.
  • the base body 10, which can be used both with brush heads 14 for oscillating movements and also for pivoting movements, are preferably only one Gear 48 equipped to provide the pivoting movement. An additional superimposed translational motion component appears less useful here.
  • On AufsteckbürstengrundSuper 102 also supporting stumps 108 are formed from hard material both at the head end portion as well as in the neck-side portion.
  • These Abstützstümpfe 108 serve various functions: the support in an injection mold in a subsequent injection molding process step for molding a soft elastic material, the support of the brush body 102 during labeling and optionally provide with their visible on the surface of the brush attachment surface 14 suitable areas on which labels, for example can be applied by hot stamping, inkjet or tampon Beschriftungsvon.
  • the brush head body 102 is already equipped with bristle receiving holes 110 on the head side.
  • both on the top shown in Fig. 21 as well as the underside 44 shown in FIG. 22 each have a vent hole 112.
  • the formed on the top 24 and the receiving side of the bottom 44 vent hole 112 is used in the injection molding of the support of a core Shaping the Achsfact 106.
  • the top vent opening 112 in the brush body 102 is covered in the subsequent injection molding process step of soft elastic material.
  • the remaining under-side vent hole 112 is not covered with soft elastic material and serves to escape air during insertion of the Output shaft 30 and the flushing of the axle 106 with liquid for cleaning purposes.
  • Fig. 22 is in the neck-side end of the
  • Recess 113 surrounds a tongue-like spring element 114 with snap cam formed thereon, which has a notch
  • FIGS. 23 and 24 show the upper side 24 and the lower side 44 of the brush-on brush body 102 shown in FIGS. 21 and 22, respectively, after overmolding with a flexible material.
  • Brush body 102 is then equipped with bristles 42 in the head region, for example, by means of a classic bristle method.
  • the brush attachment 14 is preferably made of a plurality of plastic materials. Preferably, in each case a hard and a soft material is used. The different plastics adhere to each other. With a combined use of hard and soft materials in the brush attachment 14, a certain flexibility of the brush attachment 14 can be achieved. A combination of different layer thicknesses and shapes makes it easy to adjust the flexibility. Furthermore, with the soft material on the outer surface of the brush attachment 14, a structure can be formed, which is a removal of the brush attachment 14 from the main body 10th in which it provides a restrained structure for the fingers of the human hand.
  • a support surface 108 is mounted on the underside 44 of the brush head 38 which fixes and supports the brush head 38 during the bristling process.
  • the completed brush attachment 14 is shown in a sectional view in Fig. 25. In this
  • Sectional view is the one for the production of the
  • Brush body 102 used hard material shown with a different hatching than the soft-elastic material sprayed in a second process step. Particularly clear in this illustration, the axle 106 and the uncovered
  • Vent hole 112 visible.
  • the spring element 114 clearly recognizable, which is formed on the brush attachment 14 on one side and therefore it allows the brush attachment 14 therefore to be plugged in two different orientations about its longitudinal axis on the base body 10.
  • the spring element 114 is partially surrounded by soft elastic material.
  • the spring element 114 must already resiliently soften in the first injection molding process step, when removing the core, which serves to form the axle receptacle 106, due to its resilient properties.
  • the same embodiment of the spring element 114 can also be used in an oscillating brush, as shown in FIG. 26.
  • the brush attachment shown in Fig. 25 on the head 38 may be additionally equipped with a rubber-elastic cleaning structure, not shown, in the form of a tongue cleaner.
  • scraper edges are preferably formed from the soft elastic material, which can remove plaque and contaminants from the tongue during a movement.
  • Similar soft elastic material can be used to form in the bristle field soft elastic massage elements, preferably rubber-elastic cleaning blades or cleaning structures.
  • the scraper edges of soft elastic material are preferably transversely to the direction of movement of the brush head. If, for example, the brush head performs a reversing pivoting movement, then the scraper edges are essentially aligned in the longitudinal direction of the brush attachment 14.
  • FIG. 26 is a sectional view of the embodiment of a brush attachment 14 already shown in FIG. 4. This embodiment of the brush attachment 14 permits a reversingly rotating or reversely oscillating movement of the cleaning element 40.
  • the slip-on axis 116 that can be pushed onto the output shaft 30 is particularly important the deflecting 118 clearly visible.
  • the cleaning element 40 in this embodiment has a disk-shaped bristle carrier 120 and has been provided with bristles 42 during manufacture in a conventional plastic anchor, AFT (Anker Free Tufting) or IMT (In MoId Tufting) process.
  • the bristle carrier 120 is fastened on a turntable 122, which is mounted pivotably on the brush head body 102 via a turntable axis 124 which is fastened centrally in the turntable 122.
  • the turntable axis 124 extends essentially at right angles to the longitudinal extent of the plug-on axis 116 or the output axis 30.
  • the turntable 122 has a slot 126 into which the deflection element 118 engages.
  • the radial engagement position of the deflecting element in the turntable 122 is influenced, so that between a larger and smaller pivot angle of the turntable 122 and thus the Cleaning element 40 can be selected.
  • the pivot angle is less than 35 °, preferably less than 30 °. Further information on the internal structure of this embodiment of a brush attachment 14 can be taken from CH 688537, for example.
  • FIGS. 27 and 28 Another embodiment of a brush attachment 14 with a pivotable cleaning element 40 is shown in FIGS. 27 and 28.
  • the brush body 102 In contrast to the embodiment shown in FIG. 2 and FIGS. 21 to 25, in which the entire brush attachment 14 is pivoted together with the cleaning element 40, the brush body 102 is attached firmly to the base 10, similar to the embodiment shown in FIG and not swiveling.
  • the cleaning element 40 is fixedly connected to an axle extension 128.
  • the axle extension 128 in turn is pivotally mounted in the brush body 102.
  • the Achsverinrung 128 is connected to the output shaft 30.
  • the cleaning element 40 can also be arranged at an angle or inclined to the attachment axis 116.
  • the angle of inclination is preferably less than 30 °, particularly preferably less than 15 °.
  • FIGS. 29 and 30 show a further development of the embodiment of a brush attachment 14 shown in FIGS. 27 and 28.
  • alternately stationary cleaning elements 40s and pivotally movable cleaning elements 40 are arranged along the longitudinal extent of the brush attachment 14.
  • the movable cleaning elements 40 as visible in Fig. 30, rotatably connected to the axle extension 128.
  • plug-on brush 14 is plugged onto base body 10 and the operating state of electric toothbrush 12 is activated, movable cleaning elements 40 pivot relative to stationary cleaning elements 40s, so that bristles 42 fastened to them also perform relative pivoting movements relative to one another. In this way, a particularly preferred cleaning effect is achieved.
  • the head 38 has to be made strongly thickened in order nevertheless to achieve the required stability.
  • the reversing pivoting movement can be additionally superposed with a translational reciprocating movement.
  • FIGS. 31 and 32 Another embodiment of a brush attachment 14 is shown in FIGS. 31 and 32. Also in this embodiment, a pivotable cleaning element
  • this embodiment of a brush attachment 14 is also suitable for use in a combined movement with a reversing pivoting and a reversing translational motion component.
  • the reversing translational movement component in this case causes a reciprocating movement of the pivotally movable cleaning element 40 along the longitudinal extent of the output shaft 30.
  • the transmission 48 for example, those shown in Fig. 12 to Fig. 15 and in Fig. 20 Cam extension 94 on.
  • the axle extension 128 can be made flexible in the area between the stationary and movable cleaning element 40s and 40 by a specific choice of material and / or a targeted material weakening. In this way, the movable cleaning element 40 can be deflected flexibly with respect to the stationary cleaning element 40s if the cleaning pressure is too high.
  • the embodiments of the brush attachment 14 illustrated in FIGS. 27 to 32 are each configured such that the neck 34 is connected such that it can be attached or detachably fixed to the connecting piece 32 and thus does not move with the movable cleaning elements 40.
  • the zones where the Aufsteckachse 116 from the Aufsteckbürstengrund stresses 102nd emerges at least partially surrounded by soft elastic material. This in turn serves as anti-trap protection and / or for sealing and storage.
  • zones of specially designed soft material can be used in all design variants. These form a resilient buffer, which prevent pinching of lips, mouth surfaces, etc.
  • a concertina-type bellows could be formed of soft material.
  • the movement compensating structures of soft material conceivable.
  • the brush attachment 14 is considered to have a length of 55 mm to 85 mm, preferably 65 mm to 75 mm, measured from its free end to the shank end of the Brush head 14.
  • the vent hole 112 opened in the completed brush head 14 is located in the longitudinal direction at a distance of 25 mm to 35 mm, preferably from 28 mm to 32 mm, from the shank-side end of the brush head 14.
  • the snap-action cam of the spring element 114 in the embodiment shown in FIGS. 21 to 25 is located longitudinally between 12 mm to 20 mm, preferably 15 mm to 17 mm, away from the plug-on end of the brush attachment 14.
  • polypropylene for example, polypropylene (PP), polyester (PET), polycyclohexanedimethanol terephthalate (PCT / PCT-A
  • PP polypropylene
  • PET polyester
  • PCT polycyclohexanedimethanol terephthalate
  • PE polyethylene
  • PS polystyrene
  • SAN polystyrene-acrylonitrile
  • PMMA polymethylmethacrylate
  • ABS polyoxymethylene
  • PA polyamide
  • Young's modulus of 1000 N / m 2 to 2400 N / m 2 preferably from 1300 N / m 2 to 1800 N / m 2 used.
  • soft elastic material for example, low density polyethylene (PE-LD), high density polyethylene (PE-HD), polyethylene (PE), polyvinyl chloride (PVC), elastomeric material such as polyurethane (PUR) or a thermoplastic elastomer (TPE), preferably a thermoplastic elastomer (TPE) used. Also possible is the use of polyolefin-based elastomer.
  • the Shore A hardness of the soft elastic material used is preferably less than 90.
  • the thickness of layers of soft elastic material is more than 0.2 mm, preferably more than 0.5 mm.
  • Soft elastic material with a Shore A hardness of less than 50, preferably less than 35, is used both on the main body 10, as well as on the brush attachment 14, for damping vibrations, vibrations and noise emissions that occur in the active operating state. These material properties provide a good compromise to optimally ensure the functions that are to be met with the soft elastic material.
  • thin layers of soft elastic material can also be formed in the erection section 18 or above labeling fields.
  • soft elastic material is also used for training for the head 38 and on the cleaning element 40 arranged cleaning elements, such as an already mentioned tongue cleaner or soft elastic cleaning blades.
  • the soft-elastic cleaning blades can outside the bosten 42 standing around or arranged within bristle fields.
  • the bristles 42 themselves are preferably made of polyamide or polyester with a diameter of 0.1 to 0.2 mm, preferably from 0.125 mm to 0.175 mm. They are arranged in bristle bundles.
  • the relatively small-shaped head 38 has 20 to 30, preferably 22 to 28 bundles of bristles 42.
  • FIGS. 33 to 41 Various forms of bristle arrangements are shown in the following FIGS. 33 to 41.
  • a wiping effect is achieved with a reversing pivoting movement.
  • bristle bundles are also arranged at right angles to the longitudinal axis of the neck 34 with its longitudinal axis in order to achieve such a wiping effect even with a reversing translational reciprocating movement of the head 38.
  • the embodiment of a movable cleaning element 40 shown in FIG. 34 is therefore also particularly suitable for a combined movement of the cleaning element 40 with a reversingly pivoting and a reversing translational movement component.
  • the illustrated embodiments of cleaning elements 40 can of course also be used in manual toothbrushes. With manual use become similar Cleaning movements, of course, with much lower frequency used.
  • the movable cleaning elements 40 shown in FIGS. 35 to 38 are arranged above a substantially circular or in the longitudinal direction slightly elliptically shaped bristle carrier 120 and in particular for use in reversing oscillating motion forms provided (see Fig. 4 and Fig. 26).
  • these cleaning elements 40 with bristles 42 are also arranged above substantially elongate base surfaces (see FIGS. 35, 36) or else crescent-shaped base surfaces (see FIGS. 37 and 38).
  • the longitudinal axes of the elongated base surfaces of the bristle bundles are preferably arranged at least approximately at right angles to the pivot axis about which the cleaning element 40 oscillates in a reversing manner.
  • FIGS. 39 to 41 embodiments of cleaning elements 40 are shown in which stationary cleaning elements 40s are combined with pivotally movable cleaning elements 40, respectively.
  • the reversibly oscillatable cleaning element 40 is adjacent to a stationary cleaning element 40s, which is arranged at the free end region of the head 38 and has a rounded-triangular base area.
  • Fig. 41 is arranged only on the neck side of the pivotally movable cleaning element 40, a stationary cleaning element 40s.
  • movable cleaning elements 40 according to FIGS. 35 to 38 can also be combined with the cleaning elements 40, 40s shown in FIGS. 39-41.
  • the bristles of the illustrated embodiments of cleaning elements 40 can be done in various ways, for example by means of conventional anchor plates or as already mentioned by means of IMT or AFT method.
  • These bristle bundles with comparatively large expansions of the bases in different directions combine the wiping effects for different directions of movement of the cleaning elements 40.
  • the two bristles also allow greater freedom of design with respect to the appearance of the bristle field.
  • bristles 42 rising from the bristle carrier 120 substantially at right angles or bundles of bristles 42 it is also possible to form bristles 42 arranged X-shaped on a cleaning element 40, 40s.
  • the X-shaped bristles 42 are then at an angle of 3 ° to 20 °, preferably 8 ° to 14 ° to each other.
  • bristle bundles which then serve in particular the cleaning of a gum line.
  • a total of 120 cylindrical, as well as one-sided or two-sided sharpened bristles 42 can be used on the bristle carriers, in each case pure or combined or in combination with additional massage and cleaning blades or cleaning structures made of soft material.
  • pointed bristles 42 on electric toothbrushes has already been described and referenced in detail in WO 2004/093718.
  • the described heads or cleaning elements and production methods can be combined directly with the electric toothbrush 12 according to the invention.
  • the described brush heads 14 are preferably designed to be interchangeable. But it is also possible one
  • Brush head 14 is not replaceable. This is especially the case with cheap battery devices.
  • the cleaning elements 40, 40s shown by way of example can also be replaced by other cleaning or active elements.
  • these are, for example, generally interdental attachments, such as spiral brushes, toothpicks, etc., polishing elements, soft-elastic elements (eg professional cups) or tongue cleaner attachments.
  • the transmission 48 according to the invention can also be used in other areas of personal care (face massage, nail care, head massage, wet and dry shaving, etc.) with correspondingly designed effective sets.
  • FIG. 42 shows a section of the inner life of a further embodiment of an electric toothbrush 12 according to the invention.
  • the detail corresponds approximately to the illustration shown in FIG. 5 in connection with a previously described embodiment. Similar parts are provided in Fig. 42 with the same reference numerals as in Fig. 5.
  • the transmission 48 is equipped with only one single gear stage. This gear stage is formed by a cam 72 and another pickup 132.
  • the cam 72 is non-rotatably mounted on the not visible in Fig. 42 drive shaft 60 of the electric motor 58.
  • the transmission 48 has no drive gear 68 and no crown gear 70.
  • the transmission 48 of this embodiment produces less noise during operation and is simpler and less expensive to manufacture.
  • the energy consumption and the preferred movement patterns can be adopted by the previously described embodiments substantially analog.
  • the embodiment shown in FIG. 42 also has a control unit 52 arranged laterally from the electric motor 58 for controlling the operating states of the electric motor 58 and an inner frame 46 for fixing the position of the further pickup 132 to the output shaft 30 with respect to the cam 72 on.
  • the pickup 132 In the axial direction, parallel to the longitudinal axis of the output shaft 30, the pickup 132 is thereby supported on the one hand by a head bearing 134 of the inner frame 46 and on the other hand to the electric motor 58 through a stabilizing axis in its position.
  • the output shaft 30 extends parallel to the drive axis 60 indicated in the figures as a dashed line. If, in contrast to the embodiments shown, a parallel axial offset between the axes 30 and 60 is not desired, this can be achieved a correspondingly shaped spur gear with at least two gears whose first gear is seated, for example, on the drive shaft 60 and in a second gear on which the cam 72 is mounted, engages compensated.
  • the drive shaft 60 is parallel but not coaxial with
  • Output shaft 30 is positioned. In order to arrange the brush head 14 relative to the base body 14 in at an angle, and the drive shaft 60 and the
  • Output shaft 30 include the same angle. For reasons of ergonomics, an angle of less than 20 °, preferably less than 10 °, is preferred.
  • the inner frame 46 is opposite to that in FIG. 42 modified variant shown so that the output shaft 30, the output shaft sleeve 75 and the pickup 74, 132 are at said angle to the drive shaft 60. An illustration of this variant is shown in FIGS. 53 to 56.
  • the further pickup 132 is positioned or fixed along its longitudinal direction by a stabilizing axle 136.
  • a so-called pickup extension can be formed which extends the further pickup 132 in the direction of the electric motor 58 and is supported thereon. This form of guidance of the further pickup 132 will be further described in connection with FIGS. 53 to 56.
  • FIG. 44 it is shown particularly clearly how a closed circumferential gripper grip 142 of the further gripper 132 engages around the cam 72 radially with slight play.
  • the pickup handle 142 is radially inward, the outer wall of the cam 72 opposite, equipped with a sensing wall 144.
  • the cam 72 If, in the active operating state of the electric motor 58, the cam 72 is set in rotation about the drive axis 60, the outer wall of the cam 72 slides along the scanning wall 144 of the pickup handle 142 and moves the other pickup 132 together with its output shaft 30 in a reversing pivoting manner about the latter ,
  • the play between the sensing wall 144 and the cam 72 and optionally the use of elastic materials prevents on the one hand a "beating" of the output shaft 30, and damage to the electric motor 58 under heavy loads during cleaning operation. It is also possible, the buyer Umgriff 142 also unilaterally open, so fork-like form to to give it a higher elasticity and thereby avoid the mentioned "beating".
  • the friction of the cam 72 on the sensing wall 144 can be reduced by using suitable lubricants. Also, to reduce the friction, it is possible to form the cam 72 slightly cambered and to reduce the size of the sliding surface by an edge-like design of the sensing wall 144. The crowning is described in detail in connection with FIG. 49.
  • FIGS. 45 to 48 show various perspective views of the further pickup 132.
  • the pickup body 142 and furthermore a pickup recess 148 are formed on a pickup body 146.
  • Said elements 132, 146, 142 are preferably made of a hard plastic material in an injection molding process.
  • the rotationally fixed to the pickup body 146 arranged output shaft 60 is preferably made of a metal, such as a stainless steel.
  • the receiving recess 148 is formed on the opposite side of the pickup body 146 opposite the pickup handle 142 for the previously mentioned forced guidance of the further pickup 132.
  • this Abaueraus predominantlyung 148 engages firmly on the inner frame 46 in the direction of the further Ab disturbings 132 projecting pin in the form of the stabilizing axis 136 with a game.
  • the stabilization axis 136 can be seen in FIGS. 42 and 43.
  • the pick-off recess 148 is essentially cylindrical or oval and provided with an inner diameter which allows a reversing pivoting movement of the further pickup 132 about the longitudinal axis of the output shaft 30 and at the same time a displacement of the further pickup 132 prevented in the longitudinal direction. Because of this Abilleraus Principleung 148 in cooperation with the stabilizing axis 136 of the aforementioned subscriber extension is superfluous and no longer needed.
  • the Abilleraus Principleung 148 is formed slot-like, so that in addition a cam-type positive guidance of the further Ab disturbings 132 is effected in the longitudinal direction. If, in an active operating state of the electric motor 58, the further pickup 132 reversely pivots about the longitudinal axis of the output shaft 30, a reversing translational oscillating component of the pickup 132 in the longitudinal direction of the output shaft 30 is generated at the same time.
  • the maximum longitudinal displacement in the reversing translational reciprocating component of the output shaft 30 is determined by a pitch angle ⁇ formed between the longitudinal axis of the pickup recess 148 and a transverse axis extending at right angles to the longitudinal axis of the output shaft 30 and the maximum rotational angle ⁇ of the output shaft 30.
  • the pitch angle ⁇ is preferably set smaller than 45 °, more preferably between 10 ° and 30 °.
  • the resulting maximum longitudinal displacement in the reversible translational reciprocating motion is less than 2 mm, preferably less than 1 mm.
  • a gear ratio between the reversing pivoting component and the reversing translational component of 1: 1 is achieved.
  • the superposition of the reversingly pivoting and reversing translational motion component leads to a closed trajectory of the cleaning element 40 connected to the output shaft 30.
  • different movement patterns can be generated. With regard to further possibilities of generating various patterns of movement, reference should again be made at this point to FIGS. 16 to 20 and the table in the text.
  • the shape of the recess 148 is not limited to that shown in Fig. 47, but may also be S- or C-shaped or designed as another, not straight curve shape. For example, wave-shaped shapes are also conceivable, by means of which larger transmission ratios of pivoting to translational movement components can also be achieved.
  • cams 72 Two embodiments of cams 72 are shown by way of example in FIGS. 49 and 50.
  • the cam 72 shown in FIG. 49 is substantially cylindrical, with its longitudinal central axis parallel to the longitudinal center axis of the drive axle 60 (indicated by dashed lines).
  • the cam 72 is thus arranged eccentrically with respect to the drive axle 60. The itself when using such formed cam 72 resulting relationship between the deflection angle ⁇ of the output shaft 30 and the
  • the rotational angle ⁇ of the drive shaft 60 (or the time t) during a complete revolution of 360 ° (2 ⁇ ) is shown in FIG. 51.
  • This functional relationship corresponds to the course shown in FIG. 16 and effects a 1: 1 translation of the rotational movement of the drive axle 60 into the reversingly pivoting movement of the pickup 132 or the output shaft 30.
  • the deflection angle ⁇ follows a sinusoidal course and assumes in terms of magnitude maximum values as a function of the eccentricity of the arrangement of the cam 72 with respect to the drive axis 60 and the diameter of the cam 72.
  • the 1: 1 ratio is mainly used in connection with an electric motor 58 for the previously described high speeds.
  • the cam 72 has a cambered shape, that is, its outer surface is slightly outwardly curved and does not run parallel to the outer surface of the drive shaft 60.
  • the diameter of the cam 72 changes along the longitudinal extent of the cam 72 and causes this particular shape
  • the cam 72 has a diameter of 4.5 mm to 5.5 mm, preferably 4.9 mm to 5.1 mm, while in the median plane has a maximum diameter of 5 mm to 6 mm, preferably 5.2 mm to 5.4 mm.
  • the cambered surface has a radius of curvature between 95 mm and 115 mm, preferably between 100 mm and 110 mm.
  • the ratio of the radii of curvature in the end region of the cam 72 to one of these radii is diameter at the end to Diameter in center plane 1.01: 1 to 1.3: 1, preferably 1.02: 1 to 1.1: 1.
  • the crowning of the cam 72 causes the active
  • the crowning is for the
  • the distance between the longitudinal center axis of the cam 72 and the longitudinal center axis of its axis of rotation acting as driving axle 60 is 0.1 mm to 0.6 mm, preferably between 0.2 mm and 0.45 mm. This distance is a measure of the eccentricity or imbalance of the cam 72, which causes the deflection of the further pickup 132 during its rotation.
  • the distance between the longitudinal center axes of the drive axle 60 and the output shaft 30 is between 3 mm and 9 mm, preferably between 5 mm and 7 mm, particularly preferably about 6 mm.
  • the ratio of the distances of the longitudinal center axes on the one hand from the output axis 30 to the drive axis 60 in the area of the pickup 74, 132 and on the other hand from the drive axis 60 to the eccentrically arranged cam 72 is 5: 1 to 90: 1, preferably at least 10: 1, particularly preferably 11 : 1 to 35: 1.
  • This small maximum deflection angle ⁇ totai in turn causes a small deflection of the cleaning elements 40, which in conjunction with the high speed of the electric motor 58 ensures a particularly effective and gentle cleaning of the teeth and the gums.
  • the gear ratio may be increased, for example, with the cam 72 shown in FIGS. 50 and 52 to achieve a higher moving frequency of the movable cleaning member 40.
  • This embodiment of the cam 72 is arranged centrally with respect to the drive axle 60.
  • the cam 72 has a rounded, substantially triangular cross-sectional shape. It corresponds in shape and function to the cam 72 already shown in FIGS. 10 and 17, but in this embodiment it is fastened directly on the drive axle 60.
  • the functional dependence of the deflection angle ⁇ of the output shaft 30 on the rotational angle ⁇ of the drive shaft 60 (or the time t) for a complete rotation of the drive shaft 60 of 360 ° (2 ⁇ ) is determined by means of this cam 72 a
  • FIGS. 53 to 56 show a further embodiment of a transmission 48 according to the invention, in which the drive axle 60 is arranged inclined with respect to the output shaft 30.
  • the further customer 132 is along its longitudinal direction by an already mentioned Abauerfortsatz 150 and the head bearing 134th supported.
  • the customer extension 150 is tapered towards its free end region.
  • Characterized a Ab thriftfortsatzspitze 152 is formed, which rises almost pointwise on a the electric motor 58 associated or provided on the inside of the body 10 support surface 154.
  • the customer extension tip 152 is preferably formed in continuation of the longitudinal center axis of the output shaft 30, so that in the active operating state of the electric motor 58 only a point rotation about a contact point of the customer extension tip 152 results on the support surface 154.
  • the angle formed between the brush attachment 14 and the base 14 is the same that is trapped between the drive shaft 60 and the output shaft 30. For ergonomic reasons, this angle is less than 20 °, preferably less than 10 °.
  • the inner frame 46 is modified relative to the variant shown in FIG. 42, so that the output shaft 30, the output shaft sleeve 75 and the further pickup 132 are at said angle to the drive axis 60.
  • the use of all cams 72 described in connection with a multi-stage transmission 48, as shown for example in FIGS. 8 to 20, is also possible for a single-stage transmission 48.
  • these cams 72 may have cross sections in the form of rounded n-corners, where n is an odd positive number. All other features of the previously described embodiments of electric toothbrushes 12 according to the invention can also be transferred to the embodiment shown in FIGS. 42 to 56.

Landscapes

  • 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'invention concerne un engrenage (48) pour une brosse à dents électrique qui sert à la transmission et à la conversion d'un mouvement de rotation délivré par un moteur (58) électrique en un mouvement de nettoyage particulièrement soigneux et efficace d'un élément (40) de nettoyage. Le rapport de l'écart entre l'axe central longitudinal d'un axe (30) de sortie et l'axe central longitudinal d'un axe (60) d'entraînement (60) de l'engrenage (48) avec l'écart entre l'axe central longitudinal d'un axe (60, 78) qui entraîne une came (72) de l'engrenage (48) et l'axe central longitudinal de la came (72) est au moins de 10:1.
EP07725049A 2006-09-29 2007-05-10 Brosse à dents électrique et transmission pour une brosse à dents électrique Withdrawn EP2066260A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP19201336.5A EP3610830A1 (fr) 2006-09-29 2007-05-10 Brosse enfichable pour une brosse à dents électrique
EP20100011026 EP2272463A3 (fr) 2006-09-29 2007-05-10 Brosse à dents électrique et transmission pour une brosse à dents électrique
EP07725049A EP2066260A1 (fr) 2006-09-29 2007-05-10 Brosse à dents électrique et transmission pour une brosse à dents électrique
EP12007125.3A EP2548531B1 (fr) 2006-09-29 2007-05-10 Brosse à dents électrique

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP20060020546 EP1905382A1 (fr) 2006-09-29 2006-09-29 Brosse à dents électrique et transmission pour une brosse à dents électrique
PCT/EP2007/004127 WO2008040401A1 (fr) 2006-09-29 2007-05-10 Brosse à dents électrique et engrenage pour une brosse à dents électrique
EP07725049A EP2066260A1 (fr) 2006-09-29 2007-05-10 Brosse à dents électrique et transmission pour une brosse à dents électrique

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP19201336.5A Division EP3610830A1 (fr) 2006-09-29 2007-05-10 Brosse enfichable pour une brosse à dents électrique
EP12007125.3A Division EP2548531B1 (fr) 2006-09-29 2007-05-10 Brosse à dents électrique

Publications (1)

Publication Number Publication Date
EP2066260A1 true EP2066260A1 (fr) 2009-06-10

Family

ID=37769409

Family Applications (5)

Application Number Title Priority Date Filing Date
EP20060020546 Withdrawn EP1905382A1 (fr) 2006-09-29 2006-09-29 Brosse à dents électrique et transmission pour une brosse à dents électrique
EP07725049A Withdrawn EP2066260A1 (fr) 2006-09-29 2007-05-10 Brosse à dents électrique et transmission pour une brosse à dents électrique
EP12007125.3A Revoked EP2548531B1 (fr) 2006-09-29 2007-05-10 Brosse à dents électrique
EP20100011026 Withdrawn EP2272463A3 (fr) 2006-09-29 2007-05-10 Brosse à dents électrique et transmission pour une brosse à dents électrique
EP19201336.5A Withdrawn EP3610830A1 (fr) 2006-09-29 2007-05-10 Brosse enfichable pour une brosse à dents électrique

Family Applications Before (1)

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EP20060020546 Withdrawn EP1905382A1 (fr) 2006-09-29 2006-09-29 Brosse à dents électrique et transmission pour une brosse à dents électrique

Family Applications After (3)

Application Number Title Priority Date Filing Date
EP12007125.3A Revoked EP2548531B1 (fr) 2006-09-29 2007-05-10 Brosse à dents électrique
EP20100011026 Withdrawn EP2272463A3 (fr) 2006-09-29 2007-05-10 Brosse à dents électrique et transmission pour une brosse à dents électrique
EP19201336.5A Withdrawn EP3610830A1 (fr) 2006-09-29 2007-05-10 Brosse enfichable pour une brosse à dents électrique

Country Status (8)

Country Link
US (5) US8365335B2 (fr)
EP (5) EP1905382A1 (fr)
JP (1) JP5348592B2 (fr)
CN (1) CN101516290B (fr)
CA (2) CA2842985C (fr)
DE (1) DE202007019478U1 (fr)
MX (2) MX344558B (fr)
WO (1) WO2008040401A1 (fr)

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CA2842985A1 (fr) 2008-04-10
US9572642B2 (en) 2017-02-21
EP2272463A3 (fr) 2012-09-19
CA2663600A1 (fr) 2008-04-10
EP2548531B1 (fr) 2015-09-23
CA2663600C (fr) 2016-01-19
CN101516290B (zh) 2012-05-30
WO2008040401A1 (fr) 2008-04-10
CA2842985C (fr) 2015-10-20
US9125714B2 (en) 2015-09-08
EP3610830A1 (fr) 2020-02-19
EP1905382A1 (fr) 2008-04-02
US8365335B2 (en) 2013-02-05
CN101516290A (zh) 2009-08-26
JP2010504775A (ja) 2010-02-18
JP5348592B2 (ja) 2013-11-20
US20130097789A1 (en) 2013-04-25
US20150289958A1 (en) 2015-10-15
US20090183324A1 (en) 2009-07-23
EP2272463A2 (fr) 2011-01-12
EP2548531A3 (fr) 2014-06-04
DE202007019478U1 (de) 2012-11-09
US20180228583A1 (en) 2018-08-16
EP2548531A2 (fr) 2013-01-23
US9968427B2 (en) 2018-05-15
US20170189151A1 (en) 2017-07-06
MX2009002117A (es) 2009-04-01
MX344558B (es) 2016-12-20

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