EP1171014A1 - Toothbrush - Google Patents

Toothbrush

Info

Publication number
EP1171014A1
EP1171014A1 EP00911273A EP00911273A EP1171014A1 EP 1171014 A1 EP1171014 A1 EP 1171014A1 EP 00911273 A EP00911273 A EP 00911273A EP 00911273 A EP00911273 A EP 00911273A EP 1171014 A1 EP1171014 A1 EP 1171014A1
Authority
EP
European Patent Office
Prior art keywords
bristle
rubber
handle head
toothbrush
bristles
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Withdrawn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
EP00911273A
Other languages
German (de)
French (fr)
Inventor
Akira Kao Corporation Research Labs. SUZUKI
Kouji Kao Corporation Research Labs. MAEDA
Eiki Kao Corporation Research Labs. MIURA
Naoki Kao Corporation Research Laboratories IMAI
Mitsuyuki Kao Corporation Research Labs. KUBO
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.)
Kao Corp
Original Assignee
Kao Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP11114826A external-priority patent/JP2000300342A/en
Priority claimed from JP11114827A external-priority patent/JP2000300345A/en
Priority claimed from JP11482599A external-priority patent/JP3308227B2/en
Priority claimed from JP11482499A external-priority patent/JP3308226B2/en
Application filed by Kao Corp filed Critical Kao Corp
Publication of EP1171014A1 publication Critical patent/EP1171014A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B9/00—Arrangements of the bristles in the brush body
    • A46B9/06—Arrangement of mixed bristles or tufts of bristles, e.g. wire, fibre, rubber
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B15/00—Other brushes; Brushes with additional arrangements

Definitions

  • toothbrushes for massaging gums there have been known, for example, a toothbrush provided with tongue piece-like rubber massaging members into longitudinal edge portions on the bristle-setting surface of a handle head (Japanese Utility Model Application Laid-Open No. 1738/1972), a toothbrush provided with rubber-made bristles the tips of which are curved outward ( Japanese Utility Model Application Laid-Open No. 35527/1987), etc.
  • Japanese Utility Model Application Laid-Open No. 35527/1987 Japanese Utility Model Application Laid-Open No. 35527/1987
  • the above object of the present invention can be achieved by a toothbrush comprising rubber-like bar bristles set with an inclination toward the outside into at least parts of longitudinal edge portions on the bristle-setting surface of a handle head.
  • the above object of the present invention can also be achieved by a toothbrush comprising rubber-like bar bristles set alternately with bristle bundles in an upright position with their tips projected from the tips of the bristle bundles into at least parts of longitudinal edge portions on the bristle-setting surface of a handle head.
  • a toothbrush comprising rubber-like bar bristles each having a cross-sectional shape that its face is wider at the peripheral side of a handle head than at the central side thereof, which are set into at least parts of longitudinal edge portions on the bristle-setting surface of the handle head.
  • a toothbrush comprising a mixed bristle part composed of rubber-like bar bristles and bristle bundles having softness to an extent that gums are not damaged, said mixed part being formed in a peripheral portion on the bristle-setting surface of a handle head, and a bristle part composed of bristle bundles harder than the bristle bundles set in the peripheral portion, said bristle part being formed in the central portion on the bristle-setting surface of the handle head.
  • a toothbrush comprising rubber-like bar bristles, the bases of which are connected to each other only on the side of the back surface of a handle head, set into at least parts of the bristle- setting surface of the handle head.
  • Figs. 1A and IB illustrate a toothbrush according to a first embodiment of the present invention.
  • Fig. 1A is a schematic plan view illustrating a handle head thereof.
  • Fig. IB is a schematic side elevation thereof viewed from the left side.
  • Fig. 2 is an enlarged cross-sectional view illustrating an example of a rubber-like bar bristle.
  • Figs . 3A and 3B illustrate a toothbrush according to a second embodiment of the present invention.
  • Fig. 3A is a schematic plan view illustrating a handle head thereof, and Fig. 3B is a schematic side elevation thereof viewed from the left side.
  • Figs. 4A and 4B illustrate a toothbrush according to a third embodiment of the present invention.
  • Fig. 4A is a schematic plan view illustrating a handle head thereof, and Fig. 4B is a schematic side elevation thereof viewed from the left side.
  • Fig. 5 is a schematic plan view illustrating a handle head of a toothbrush according to a fourth embodiment of the present invention.
  • Fig. 6 is a sectional view illustrating principal parts in a handle head of a toothbrush according to a fifth embodiment of the present invention.
  • Figs. 7A, 7B and 7C illustrate setting examples of rubber-like bar bristles.
  • Figs. 7A and 7B are sectional views illustrating principal parts in a handle head, in which rubber-like bar bristles are set in connection with each other at both sides of the handle head
  • Fig. 7C is a sectional view illustrating principal parts in a handle head, in which rubber-like bar bristles are set independently of each other.
  • the angle of inclination is preferably 2 to 15°, particularly 2 to 5° in an outside direction of a longitudinal edge of a handle head based on a line perpendicular to the bristle-setting surface of the handle head.
  • the degree of the projection is preferably about 0.5 to 3.0 mm.
  • the rubber-like bar bristles be set alternately with the bristle bundles into at least parts of longitudinal edge portions on the bristle-setting surface, since the rubber-like bar bristles are prevented from being concentrated at one place, so that they become easy to reach interdental papillae.
  • the rubber-like bar bristles are not inclined in the outside direction, they are preferably set alternately with bristle bundles in an upright position with their tips projected from the tips of the bristle bundles by about 0.5 to 3.0 mm into at least parts of longitudinal edge portions on the bristle- setting surface.
  • any rubber-like bar bristles may be used irrespective of their specific shape so far as they each have a cross-sectional shape that its face is wider at the peripheral side than at the central side in order for the rubber-like bar bristle to be easier to deflect in the outside direction of the handle head than in the inside direction thereof upon use.
  • those having substantially a triangular or trapezoidal shape in section are particularly preferred because they are excellent in the ability to deflect in the outside direction. In this case, it is also preferred from the viewpoint of having a soft feel in the mouth that each corner be suitably rounded.
  • the rubber-like bar bristles may be in the form of a square bar having the same thickness on the whole.
  • the square bar be tapered off upward, and from the viewpoint of having a soft feel like the above that the tip thereof be also suitably rounded.
  • a mixed bristle part composed of rubber-like bar bristles and bristle bundles having softness to an extent that gums are not damaged is formed in a peripheral portion on the bristle-setting surface of a handle head, and a bristle part composed of bristle bundles harder than the bristle bundles set in the peripheral portion is formed in the central portion on the bristle-setting surface of the handle head, it is simple and advantageous that a difference in hardness between the bristle bundles set in the central portion and the bristle bundles set in the peripheral portion is made by, for example, suitably varying the resilience, length or thickness of the bristle bundles set in the central and peripheral portions , or the thickness of the individual bristles making up the bristle bundles irrespective of specific imparting means thereof.
  • the soft bristle bundles set in the peripheral portion may also be formed in plural rows inward from the peripheral end.
  • the rubber-like bar bristles set in combination with the soft bristle bundles set in the peripheral portion may be set over the overall periphery of the bristle-setting surface.
  • it is further preferred from the viewpoint of achieving an efficient massaging effect on gums that they be set in only longitudinal edge portions on the bristle-setting surface .
  • a connected member of rubber-like bar bristles the bases of which have been connected to each other be set into the handle head in such a manner that the bristle parts of the connected member are fitted into through-holes cut in the handle head from the side of the back surface of the handle head so as to project from the bristle-setting surface, since they can be set efficiently and certainly.
  • FIG. 1A and IB illustrate a first embodiment.
  • Rubber-like bar bristles 20 are set with an inclination of about 4° toward the outside from respective longitudinal edge portions 10b into the longitudinal edge portions 10b opposed to each other on the bristle-setting surface 10a of a handle head 10 connected to the tip of a handle 11.
  • the tips of the rubber-like bar bristles 20 are arranged at substantially the same level as the tips of bristle bundles 30 set in an upright position into the bristle-setting surface 10a, and moreover the rubber-like bar bristles 20 are set alternately with the bristle bundles 30 in the same row at the longitudinal edge portions 10b.
  • the rubber-like bar bristle 20 is a straight bar not curved up to the tip, force is easy to apply to gums in all of vertical, lateral and oblique directions, so that a high massaging effect is achieved, and moreover the bar bristles 20 do not prevent the bristle bundles 30 set into the bristle-setting surface 10a from removing sordes on teeth, since they are inclined toward the outside.
  • the rubber-like bar bristles 20 each have a cross- sectional shape of substantially a triangular form that its face is wider at the peripheral side of the handle head 10 than at the central side, wherein a corner thereof is opposed to the central side, and a side corresponding to it is located substantially in parallel with the longitudinal edge portion 10b of the handle head 10 in order for the rubber-like bar bristles to be easier to deflect in the outside direction of the handle head 10 than upon use.
  • the corners of the substantial triangle are suitably rounded so as to have a soft feel .
  • Fig. 2 illustrates another example of the cross- sectional shape of the rubber-like bar bristle 20.
  • This bar bristle has substantially a trapezoidal shape and is set into the bristle-setting surface with the shorter side 20x of the parallel sides located on the central side of the handle head 10 and with the longer side 20y thereof located on the peripheral side of the handle head 10.
  • the rubber-like bar bristles 20 are gradually tapered off upward, and tips 20c thereof are rounded.
  • the rubber-like bar bristles 20 may be formed irrespective of materials such as rubber and rubber-like synthetic resins so far as the material has deflection resilience.
  • preferable examples of the material include styrene*butadiene rubber, ethylene* propylene rubber and silicone rubber.
  • Fig. 4 illustrates a third embodiment
  • the toothbrush of this embodiment is constructed in the same manner as in the second embodiment illustrated in Figs . 3A and 3B except that the rubber-like bar bristles 20 are set in an upright position into the bristle-setting surface 10a without inclining them. More specifically, the rubber- like bar bristles 20 according to this embodiment are set alternately with bristle bundles 30 in an upright position into the bristle-setting surface 10a with the tips thereof projected from the tips of the bristle bundles 30.
  • Fig. 5 illustrates a fourth embodiment, wherein bristle bundles 30a having softness to an extent that gums are not damaged and rubber-like bar bristles 20 are set alternately with each other by only one row in the same row along the periphery of the bristle-setting surface 10a excluding an end lOd of the bristle-setting surface 10a on the handle side.
  • the rubber-like bar bristles 20 are set only into longitudinal edge portions 10b opposed to each other on the bristle-setting surface 10a, and not set into the front end 10c and the end lOd on the handle side.
  • a proper number of bristle bundles 30b prepared harder than the bristle bundles 30a set into the peripheral portion is set into the other portion on the bristle-setting surface 10a, i.e., the central portion so as to achieve a sufficient effect on removal of sordes on teeth.
  • a difference in hardness between the bristle bundles 30b set in the central portion and the bristle bundles 30a set in the peripheral portion is made by suitably varying the resilience, length or thickness of the bristle bundles as described above.
  • materials for the bristle bundles 30a and 30b natural fur or artificial bristles made of nylon, polybutylene terephthalate or the like may be used irrespective of the kind of the material as described above .
  • Fig. 6 illustrates a fifth embodiment, wherein the bases 20a of the rubber-like bar bristles 20 set into the longitudinal edge portions 10b on the bristle-setting surface 10a are connected to each other only on the side of the back surface lOe of the handle head 10 through a connecting member 21.
  • a material for the connecting member 21 may be different from the above-described material for the rubber-like bar bristles 20.
  • Such a toothbrush can be produced with extreme efficiency by fitting a connected member of plural rubberlike bar bristles 20, the bases 20a of which have been connected to each other through the connecting member 21, into through-holes 12 cut in advance in the handle head 10, into which the bristle bundles 30 have been set, from the side of the back surface lOe of the handle head 10 so as to project the bristle parts 20b of the rubber-like bar bristles 20 from the bristle-setting surface 10a, thereby setting the connected member into the handle head 10.
  • the bristle bundles 30 can also be set between the rubber-like bar bristles 20, so that the setting area of the bristle bundles is prevented from being extremely narrowed like the toothbrushes illustrated in Figs. 7A and 7B. Therefore, the toothbrush does not interfere with the effect of the bristle bundles on removal of sordes on teeth, and moreover, a higher gum-massaging effect can be brought about by the rubber-like bar bristles 20.
  • toothbrushes according to the present invention When the toothbrushes according to the present invention are used, a high massaging effect on gums, particularly, peripheries and papillae thereof can be achieved by the elastic sliding action of the rubber-like bar bristles, to say nothing of removal of sordes on teeth. Therefore, the toothbrushes also have an excellent effect on improvement and prevention of gingivitis and the like.

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  • Brushes (AREA)

Abstract

The invention relates to a toothbrush comprising rubber-like bar bristles set with an inclination toward the outside; a toothbrush comprising rubber-like bar bristles set alternately with bristle bundles in an upright position with their tips projected from the tips of the bristle bundles; a toothbrush comprising rubber- like bar bristles each having a cross-sectional shape that its face is wider at the peripheral side of a handle head than at the central side thereof; a toothbrush comprising a mixed bristle part composed of rubber-like bar bristles and soft bristle bundles, said mixed part being formed in a peripheral portion on the bristle-setting surface, and hard bristle bundles set in the central portion; and a toothbrush comprising rubber-like bar bristles set with the bases thereof connected to each other only on the side of the back surface of a handle head. According to the toothbrushes of the invention, a high massaging effect on gums, particularly, peripheries and papillae thereof is achieved, to say nothing of removal of sordes on teeth.

Description

DESCRIPTION
TOOTHBRUSH
TECHNICAL FIELD
The present invention relates to toothbrushes capable of effectively massaging gums together with the removal of sordes on teeth, and particularly to toothbrushes having rubber-like bar bristles for massaging gums.
BACKGROUND ART
As toothbrushes for massaging gums, there have been known, for example, a toothbrush provided with tongue piece-like rubber massaging members into longitudinal edge portions on the bristle-setting surface of a handle head (Japanese Utility Model Application Laid-Open No. 1738/1972), a toothbrush provided with rubber-made bristles the tips of which are curved outward ( Japanese Utility Model Application Laid-Open No. 35527/1987), etc. However, these toothbrushes have involved the following respective problems. In the case of the former toothbrush, its massaging effect on gums can be scarcely achieved when the teeth are brushed in vertical and oblique directions , setting aside the brushing in lateral directions, since the rubber massaging members are in the form of a tongue piece and projected only up to a position lower than bristle bundles. In the case of the latter toothbrush, force is hard to transmit to gums because the tips of the rubber-made bristles are curved from the beginning, and so only low massaging effect can be achieved. There has not been yet achieved under the circumstances any fully satisfactory massaging effect on gums by the conventional toothbrushes .
It is an object of the present invention to provide a toothbrush which can solve such problems of the conventional toothbrushes as described above and achieve a high massaging effect on gums, particularly, peripheries and papillae thereof.
DISCLOSURE OF THE INVENTION The above object of the present invention can be achieved by a toothbrush comprising rubber-like bar bristles set with an inclination toward the outside into at least parts of longitudinal edge portions on the bristle-setting surface of a handle head. The above object of the present invention can also be achieved by a toothbrush comprising rubber-like bar bristles set alternately with bristle bundles in an upright position with their tips projected from the tips of the bristle bundles into at least parts of longitudinal edge portions on the bristle-setting surface of a handle head.
The above object of the present invention can further be achieved by a toothbrush comprising rubber-like bar bristles each having a cross-sectional shape that its face is wider at the peripheral side of a handle head than at the central side thereof, which are set into at least parts of longitudinal edge portions on the bristle-setting surface of the handle head.
The above object of the present invention can still further be achieved by a toothbrush comprising a mixed bristle part composed of rubber-like bar bristles and bristle bundles having softness to an extent that gums are not damaged, said mixed part being formed in a peripheral portion on the bristle-setting surface of a handle head, and a bristle part composed of bristle bundles harder than the bristle bundles set in the peripheral portion, said bristle part being formed in the central portion on the bristle-setting surface of the handle head.
The above object of the present invention can yet still further be achieved by a toothbrush comprising rubber-like bar bristles, the bases of which are connected to each other only on the side of the back surface of a handle head, set into at least parts of the bristle- setting surface of the handle head.
BRIEF DESCRIPTION OF THE DRAWINGS Figs. 1A and IB illustrate a toothbrush according to a first embodiment of the present invention. Fig. 1A is a schematic plan view illustrating a handle head thereof. and Fig. IB is a schematic side elevation thereof viewed from the left side.
Fig. 2 is an enlarged cross-sectional view illustrating an example of a rubber-like bar bristle. Figs . 3A and 3B illustrate a toothbrush according to a second embodiment of the present invention. Fig. 3A is a schematic plan view illustrating a handle head thereof, and Fig. 3B is a schematic side elevation thereof viewed from the left side. Figs. 4A and 4B illustrate a toothbrush according to a third embodiment of the present invention. Fig. 4A is a schematic plan view illustrating a handle head thereof, and Fig. 4B is a schematic side elevation thereof viewed from the left side. Fig. 5 is a schematic plan view illustrating a handle head of a toothbrush according to a fourth embodiment of the present invention.
Fig. 6 is a sectional view illustrating principal parts in a handle head of a toothbrush according to a fifth embodiment of the present invention.
Figs. 7A, 7B and 7C illustrate setting examples of rubber-like bar bristles. Figs. 7A and 7B are sectional views illustrating principal parts in a handle head, in which rubber-like bar bristles are set in connection with each other at both sides of the handle head, and Fig. 7C is a sectional view illustrating principal parts in a handle head, in which rubber-like bar bristles are set independently of each other.
Description of characters:
10: Handle head
10a: Bristle-setting surface 10b: Longitudinal edge portion
10c : Front end
10d: End on a handle side
10e: Back surface
11: Handle 12: Through-hale
20: Rubber-like bar bristle
20a: Base
20b: Bristle part
20c: Bristle top (tip) 21: Connecting member
30: Bristle bundle
30a: Bristle bundle (soft)
30b: bristle bundle (hard)
BEST MODE FOR CARRYING OUT THE INVENTION
When rubber-like bar bristles are set with an inclination toward the outside in the present invention, the angle of inclination is preferably 2 to 15°, particularly 2 to 5° in an outside direction of a longitudinal edge of a handle head based on a line perpendicular to the bristle-setting surface of the handle head. In this case, it is advantageous that at least parts of the rubber-like bar bristles are projected from the tips of the bristle bundles set into the bristle-setting surface, since they become easy to strike on peripheral gingivae and interdental papillae, so that the peripheries and papillae of gums can be massaged at the same time and with high efficiency. By the way, the degree of the projection is preferably about 0.5 to 3.0 mm. In this case, it is further desirable from the viewpoint of achieving a more effective massaging effect that the rubber-like bar bristles be set alternately with the bristle bundles into at least parts of longitudinal edge portions on the bristle-setting surface, since the rubber-like bar bristles are prevented from being concentrated at one place, so that they become easy to reach interdental papillae.
On the other hand, when the rubber-like bar bristles are not inclined in the outside direction, they are preferably set alternately with bristle bundles in an upright position with their tips projected from the tips of the bristle bundles by about 0.5 to 3.0 mm into at least parts of longitudinal edge portions on the bristle- setting surface.
When rubber-like bar bristles each having a cross- sectional shape that its face is wider at the peripheral side of a handle head than at the central side thereof, are set in the present invention, any rubber-like bar bristles may be used irrespective of their specific shape so far as they each have a cross-sectional shape that its face is wider at the peripheral side than at the central side in order for the rubber-like bar bristle to be easier to deflect in the outside direction of the handle head than in the inside direction thereof upon use. However, those having substantially a triangular or trapezoidal shape in section are particularly preferred because they are excellent in the ability to deflect in the outside direction. In this case, it is also preferred from the viewpoint of having a soft feel in the mouth that each corner be suitably rounded. In this case, the rubber-like bar bristles may be in the form of a square bar having the same thickness on the whole. However, it is further preferred from the viewpoint of achieving an excellent massaging effect due to deflection elasticity that the square bar be tapered off upward, and from the viewpoint of having a soft feel like the above that the tip thereof be also suitably rounded.
When a mixed bristle part composed of rubber-like bar bristles and bristle bundles having softness to an extent that gums are not damaged is formed in a peripheral portion on the bristle-setting surface of a handle head, and a bristle part composed of bristle bundles harder than the bristle bundles set in the peripheral portion is formed in the central portion on the bristle-setting surface of the handle head, it is simple and advantageous that a difference in hardness between the bristle bundles set in the central portion and the bristle bundles set in the peripheral portion is made by, for example, suitably varying the resilience, length or thickness of the bristle bundles set in the central and peripheral portions , or the thickness of the individual bristles making up the bristle bundles irrespective of specific imparting means thereof. In this case, the soft bristle bundles set in the peripheral portion may also be formed in plural rows inward from the peripheral end. However, it is desirable from the viewpoint of achieving a high effect by the hard bristle bundles set in the central portion on removal of sordes on teeth that the soft bristle bundles be formed in only a row of the outermost row along the periphery of the bristle-setting surface. In this case, the rubber-like bar bristles set in combination with the soft bristle bundles set in the peripheral portion may be set over the overall periphery of the bristle-setting surface. However, it is further preferred from the viewpoint of achieving an efficient massaging effect on gums that they be set in only longitudinal edge portions on the bristle-setting surface .
When rubber-like bar bristles are set with the bases thereof connected to each other only on the side of the back surface of a handle head, it is preferred that a connected member of rubber-like bar bristles the bases of which have been connected to each other be set into the handle head in such a manner that the bristle parts of the connected member are fitted into through-holes cut in the handle head from the side of the back surface of the handle head so as to project from the bristle-setting surface, since they can be set efficiently and certainly.
EXAMPLES
The present invention will hereinafter be described in further detail with reference to the drawings illustrating embodiments of the present invention. Figs. 1A and IB illustrate a first embodiment.
Rubber-like bar bristles 20, the tips of which have been rounded, are set with an inclination of about 4° toward the outside from respective longitudinal edge portions 10b into the longitudinal edge portions 10b opposed to each other on the bristle-setting surface 10a of a handle head 10 connected to the tip of a handle 11. The tips of the rubber-like bar bristles 20 are arranged at substantially the same level as the tips of bristle bundles 30 set in an upright position into the bristle-setting surface 10a, and moreover the rubber-like bar bristles 20 are set alternately with the bristle bundles 30 in the same row at the longitudinal edge portions 10b.
According to this embodiment, since the rubber-like bar bristle 20 is a straight bar not curved up to the tip, force is easy to apply to gums in all of vertical, lateral and oblique directions, so that a high massaging effect is achieved, and moreover the bar bristles 20 do not prevent the bristle bundles 30 set into the bristle-setting surface 10a from removing sordes on teeth, since they are inclined toward the outside.
The rubber-like bar bristles 20 each have a cross- sectional shape of substantially a triangular form that its face is wider at the peripheral side of the handle head 10 than at the central side, wherein a corner thereof is opposed to the central side, and a side corresponding to it is located substantially in parallel with the longitudinal edge portion 10b of the handle head 10 in order for the rubber-like bar bristles to be easier to deflect in the outside direction of the handle head 10 than upon use. By the way, the corners of the substantial triangle are suitably rounded so as to have a soft feel . Fig. 2 illustrates another example of the cross- sectional shape of the rubber-like bar bristle 20. This bar bristle has substantially a trapezoidal shape and is set into the bristle-setting surface with the shorter side 20x of the parallel sides located on the central side of the handle head 10 and with the longer side 20y thereof located on the peripheral side of the handle head 10.
The rubber-like bar bristles 20 are gradually tapered off upward, and tips 20c thereof are rounded. Incidentally, the rubber-like bar bristles 20 may be formed irrespective of materials such as rubber and rubber-like synthetic resins so far as the material has deflection resilience. However, preferable examples of the material include styrene*butadiene rubber, ethylene* propylene rubber and silicone rubber.
Reference numeral 30 indicates a bristle bundle, and a proper number of the bristle bundles is set into the bristle-setting surface 10a of the handle head 10 as before. Incidentally, as a material for the bristle bundles 30, natural fur or artificial bristles made of nylon, polybutylene terephthalate or the like may be used irrespective of the kind of the material. Fig. 3 illustrates a second embodiment, and the toothbrush of this embodiment is constructed in the same manner as in the first embodiment illustrated in Figs . 1A and IB except that the tips of the rubber-like bar bristles 20 are projected by about 2 mm from the tips of the bristle bundles 30 set in an upright position into the bristle-setting surface 10a. More specifically, the rubber-like bar bristles 20 according to this embodiment are set with an inclination toward the outside of the longitudinal edge portions 10b on the bristle-setting surface 10a and with the tips thereof projected from the bristle bundles 30.
According to this embodiment, a far excellent massaging effect on peripheries and papillae of gums is achieved, since the rubber-like bar bristles 20 are projected from the bristle bundles 30.
Fig. 4 illustrates a third embodiment, and the toothbrush of this embodiment is constructed in the same manner as in the second embodiment illustrated in Figs . 3A and 3B except that the rubber-like bar bristles 20 are set in an upright position into the bristle-setting surface 10a without inclining them. More specifically, the rubber- like bar bristles 20 according to this embodiment are set alternately with bristle bundles 30 in an upright position into the bristle-setting surface 10a with the tips thereof projected from the tips of the bristle bundles 30.
According to this embodiment, an excellent massaging effect on peripheries and papillae of gums is achieved, since the rubber-like bar bristles 20 are prevented from being concentrated at one place, and projected from the tips of the bristle bundles 30.
Fig. 5 illustrates a fourth embodiment, wherein bristle bundles 30a having softness to an extent that gums are not damaged and rubber-like bar bristles 20 are set alternately with each other by only one row in the same row along the periphery of the bristle-setting surface 10a excluding an end lOd of the bristle-setting surface 10a on the handle side. By the way, the rubber-like bar bristles 20 are set only into longitudinal edge portions 10b opposed to each other on the bristle-setting surface 10a, and not set into the front end 10c and the end lOd on the handle side. A proper number of bristle bundles 30b prepared harder than the bristle bundles 30a set into the peripheral portion is set into the other portion on the bristle-setting surface 10a, i.e., the central portion so as to achieve a sufficient effect on removal of sordes on teeth. In this embodiment, a difference in hardness between the bristle bundles 30b set in the central portion and the bristle bundles 30a set in the peripheral portion is made by suitably varying the resilience, length or thickness of the bristle bundles as described above. Incidentally, as materials for the bristle bundles 30a and 30b, natural fur or artificial bristles made of nylon, polybutylene terephthalate or the like may be used irrespective of the kind of the material as described above .
According to this embodiment, besides the fact that gums can be effectively massaged by the rubber-like bar bristles 20, the gums are not damaged because the bristle bundles 30a set into the peripheral portion are soft, and moreover a high effect can be achieved on removal of sordes on teeth because the bristle bundles 30b set in the central portion are hard. Fig. 6 illustrates a fifth embodiment, wherein the bases 20a of the rubber-like bar bristles 20 set into the longitudinal edge portions 10b on the bristle-setting surface 10a are connected to each other only on the side of the back surface lOe of the handle head 10 through a connecting member 21. A material for the connecting member 21 may be different from the above-described material for the rubber-like bar bristles 20. However, the same material is preferably used to integrally mold both. Such a toothbrush can be produced with extreme efficiency by fitting a connected member of plural rubberlike bar bristles 20, the bases 20a of which have been connected to each other through the connecting member 21, into through-holes 12 cut in advance in the handle head 10, into which the bristle bundles 30 have been set, from the side of the back surface lOe of the handle head 10 so as to project the bristle parts 20b of the rubber-like bar bristles 20 from the bristle-setting surface 10a, thereby setting the connected member into the handle head 10.
According to this embodiment, since the bristle- setting surface 10a of the handle head 10 are exposed between the rubber-like bar bristles 20, the bristle bundles 30 can also be set between the rubber-like bar bristles 20, so that the setting area of the bristle bundles is prevented from being extremely narrowed like the toothbrushes illustrated in Figs. 7A and 7B. Therefore, the toothbrush does not interfere with the effect of the bristle bundles on removal of sordes on teeth, and moreover, a higher gum-massaging effect can be brought about by the rubber-like bar bristles 20. In addition, since the respective rubber-like bar bristles 20 are connected to each other on the side of the back surface lOe of the handle head 10, the rubber-like bar bristles 20 are prevented from falling off like the toothbrush illustrated in Fig. 7C. INDUSTRIAL APPLICABILITY
When the toothbrushes according to the present invention are used, a high massaging effect on gums, particularly, peripheries and papillae thereof can be achieved by the elastic sliding action of the rubber-like bar bristles, to say nothing of removal of sordes on teeth. Therefore, the toothbrushes also have an excellent effect on improvement and prevention of gingivitis and the like.

Claims

1. A toothbrush comprising rubber-like bar bristles set with an inclination toward the outside into at least parts of longitudinal edge portions on the bristle-setting surface of a handle head.
2. The toothbrush according to Claim 1 , wherein at least parts of the rubber-like bar bristles are projected from the tips of bristle bundles set into the bristle- setting surface.
3. The toothbrush according to Claim 1 , wherein the rubber-like bar bristles and the bristle bundles are set alternately with each other into at least parts of the longitudinal edge parts on the bristle-setting surface.
4. A toothbrush comprising rubber-like bar bristles set alternately with bristle bundles in an upright position with their tips projected from the tips of the bristle bundles into at least parts of longitudinal edge portions on the bristle-setting surface of a handle head.
5. A toothbrush comprising rubber-like bar bristles each having a cross-sectional shape that its face is wider at the peripheral side of a handle head than at the central side thereof, which are set into at least parts of longitudinal edge portions on the bristle-setting surface of the handle head.
6. A toothbrush comprising a mixed bristle part composed of rubber-like bar bristles and bristle bundles having softness to an extent that gums are not damaged, said mixed part being formed in a peripheral portion on the bristle-setting surface of a handle head, and a bristle part composed of bristle bundles harder than the bristle bundles set in the peripheral portion, said bristle part being formed in the central portion on the bristle-setting surface of the handle head.
7. The toothbrush according to Claim 6 , wherein a difference in hardness between the bristle bundles set in the central portion and the bristle bundles set in the peripheral portion is made by varying the resilience, length or thickness of the bristle bundles, or the thickness of the individual bristles making up the bristle bundles .
8. The toothbrush according to Claim 6, wherein the bristle bundles set in the peripheral portion are formed in only a row of the outermost row along the periphery of the bristle-setting surface.
9. A toothbrush comprising rubber-like bar bristles, the bases of which are connected to each other only on the side of the back surface of a handle head, set into at least parts of the bristle-setting surface of the handle head.
10. The toothbrush according to Claim 9, wherein a connected member of the rubber-like bar bristles, the bases of which have been connected to each other is set into the handle head in such a manner that the bristle parts of the connected member are fitted into through- holes cut in advance in the handle head from the side of the back surface of the handle head so as to project from the bristle-setting surface.
EP00911273A 1999-04-22 2000-03-22 Toothbrush Withdrawn EP1171014A1 (en)

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
JP11482799 1999-04-22
JP11482699 1999-04-22
JP11114826A JP2000300342A (en) 1999-04-22 1999-04-22 Toothbrush and manufacturing method thereof
JP11114827A JP2000300345A (en) 1999-04-22 1999-04-22 toothbrush
JP11482599 1999-04-22
JP11482599A JP3308227B2 (en) 1999-04-22 1999-04-22 toothbrush
JP11482499 1999-04-22
JP11482499A JP3308226B2 (en) 1998-09-25 1999-04-22 toothbrush
PCT/JP2000/001737 WO2000064307A1 (en) 1999-04-22 2000-03-22 Toothbrush

Publications (1)

Publication Number Publication Date
EP1171014A1 true EP1171014A1 (en) 2002-01-16

Family

ID=27470206

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00911273A Withdrawn EP1171014A1 (en) 1999-04-22 2000-03-22 Toothbrush

Country Status (3)

Country Link
EP (1) EP1171014A1 (en)
CN (1) CN1347290A (en)
WO (1) WO2000064307A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105686324A (en) * 2014-12-29 2016-06-22 邹钰 High-efficiency toothbrush for alleviating tooth surface abrasion

Families Citing this family (61)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6996870B2 (en) 1995-12-29 2006-02-14 Colgate-Palmolive Company Contouring toothbrush head
US6886207B1 (en) 1999-06-14 2005-05-03 The Procter & Gamble Company Toothbrush
US6319332B1 (en) 1999-06-11 2001-11-20 James Albert Gavney, Jr. Squeegee device and system
US6553604B1 (en) 2000-03-16 2003-04-29 Gillette Canada Company Toothbrush
DE10033256A1 (en) 2000-07-10 2002-01-24 Coronet Werke Gmbh Method and device for producing bristle goods and bristle goods
DE10130863B4 (en) * 2001-06-28 2010-03-11 Geka Brush Gmbh Method and device for the production of bristles and bristles
US7143462B2 (en) 2002-09-20 2006-12-05 Colgate-Palmolive Company Oral care implement
US20040255416A1 (en) * 2003-06-20 2004-12-23 Hohlbein Douglas J. Toothbrush with tongue cleaning member
GB0123939D0 (en) 2001-10-05 2001-11-28 Glaxosmithkline Consumer Healt Toothbrush
EP1446035B1 (en) 2001-11-20 2011-06-22 GlaxoSmithKline Consumer Healthcare GmbH & Co.KG. Toothbrush
DE10164336A1 (en) 2001-12-28 2003-07-17 Trisa Holding Ag Triengen Toothbrush and method of making such a toothbrush
FR2837080B1 (en) * 2002-03-12 2004-12-03 Gabriel Robert Raymon Astouric ERGONOMIC TOOTHBRUSH HEAD THAT AVOID TEETH REMOVAL
DE10216641A1 (en) * 2002-04-15 2003-10-23 Trisa Holding Ag Triengen Molded plastic toothbrush has a bristle support inserted into a recess in the brush head and soft cleaning components attached to the head
US8990996B2 (en) 2002-08-09 2015-03-31 Colgate-Palmolive Company Toothbrush
US6931688B2 (en) 2002-08-09 2005-08-23 Colgate-Palmolive Company Toothbrush
US7841041B2 (en) 2002-08-09 2010-11-30 Colgate-Palmolive Company Oral care implement
US8876221B2 (en) 2002-08-09 2014-11-04 Colgate-Palmolive Company Oral care implement
US8806695B2 (en) 2002-08-09 2014-08-19 Colgate-Palmolive Company Oral care implement having flexibly supported cleaning elements extending in opposite directions
US7614111B2 (en) * 2002-08-09 2009-11-10 Colgate-Palmolive Company Oral care implement
US7721376B2 (en) * 2002-09-20 2010-05-25 Colgate-Palmolive Company Oral care implement
US7594293B2 (en) 2002-09-20 2009-09-29 Colgate-Palmolive Co. Oral care implement
US7137163B2 (en) 2002-09-27 2006-11-21 Colgate-Palmolive Company Power toothbrush and power source
DE10259723A1 (en) 2002-12-19 2004-07-01 Trisa Holding Ag Toothbrush and process for making it
US20040177462A1 (en) 2003-03-14 2004-09-16 The Gillette Company Toothbrush head
CA2644304C (en) 2003-04-23 2011-06-21 John Geoffrey Chan Electric toothbrushes
US7273327B2 (en) 2003-06-20 2007-09-25 Colgate-Palmolive Company Oral care implement
CA2842174C (en) * 2003-06-20 2016-04-26 Colgate-Palmolive Company Toothbrush tissue cleanser
US7941886B2 (en) 2003-09-19 2011-05-17 Braun Gmbh Toothbrushes
DE10353541B4 (en) * 2003-11-14 2017-11-30 Zahoransky Ag Method and device for producing brushes with bundles of bristles and nubs
DE102005024082A1 (en) * 2005-05-25 2006-11-30 M + C Schiffer Gmbh Brush and method for its manufacture
DE202006020598U1 (en) 2005-08-08 2009-02-26 Gaba International Ag Toothbrush with slanted and sharpened bristles
PY0626124A (en) * 2005-09-09 2011-04-01 Colgate Palmolive Co TOOTHBRUSH
US8281448B2 (en) 2005-10-24 2012-10-09 Colgate-Palmolive Company Oral care implement having one or more moving sections
DE102008039778A1 (en) * 2008-08-26 2010-03-04 Firma G.B. Boucherie N.V. Method for producing brushes, in particular toothbrushes
USD675830S1 (en) 2009-12-18 2013-02-12 Colgate-Palmolive Company Toothbrush
US8863345B2 (en) 2009-12-18 2014-10-21 Colgate-Palmolive Company Oral care implement having a closed-loop arrangement of cleaning elements
AU2011283208B2 (en) * 2010-06-25 2015-06-18 Swimc Llc Brush with alternate rows of angled tufts
KR101548839B1 (en) * 2010-12-21 2015-08-31 콜게이트-파아므올리브캄파니 Oral care implement
RU2560002C2 (en) * 2010-12-21 2015-08-20 Колгейт-Палмолив Компани Device for oral care
WO2012093085A2 (en) 2011-01-04 2012-07-12 Trisa Holding Ag Toothbrush with injection-moulded bristles, and method and apparatus for producing the same
JP5970157B2 (en) * 2011-01-21 2016-08-17 ライオン株式会社 toothbrush
JP6363505B2 (en) 2011-10-27 2018-07-25 グラクソスミスクライン・コンシューマー・ヘルスケア・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング・ウント・コムパニー・コマンディットゲゼルシャフトＧｌａｘｏＳｍｉｔｈＫｌｉｎｅ Ｃｏｎｓｕｍｅｒ Ｈｅａｌｔｈｃａｒｅ ＧｍｂＨ ＆ Ｃｏ． ＫＧ toothbrush
CN103300598A (en) * 2012-03-13 2013-09-18 王文林 Toothbrush with stepped single-root brush hair and manufacturing device
USD765984S1 (en) 2013-12-16 2016-09-13 Colgate-Palmolive Company Toothbrush
USD765985S1 (en) 2013-12-16 2016-09-13 Colgate-Palmolive Company Toothbrush
USD760499S1 (en) 2013-12-16 2016-07-05 Colgate-Palmolive Company Toothbrush
USD753922S1 (en) 2013-12-16 2016-04-19 Colgate-Palmolive Company Toothbrush
USD764175S1 (en) 2013-12-16 2016-08-23 Colgate-Palmolive Company Toothbrush
USD765983S1 (en) 2013-12-16 2016-09-13 Colgate-Palmolive Company Toothbrush
USD764805S1 (en) 2013-12-16 2016-08-30 Colgate-Palmolive Company Toothbrush
USD765986S1 (en) 2013-12-16 2016-09-13 Colgate-Palmolive Company Toothbrush
WO2016015237A1 (en) 2014-07-30 2016-02-04 Colgate-Palmolive Company Oral care implement and method of manufacturing an oral care implement
US10213011B2 (en) 2015-12-14 2019-02-26 Colgate-Palmolive Company Oral care implement
US10136723B2 (en) 2015-12-14 2018-11-27 Colgate-Palmolive Company Oral care implement
EP4732712A2 (en) 2016-04-20 2026-04-29 Trisa Holding AG Brush product
USD815838S1 (en) 2016-07-15 2018-04-24 Colgate-Palmolive Company Toothbrush
CN107280222A (en) * 2017-08-02 2017-10-24 安徽信息工程学院 A kind of Tooth-brush structure
CN109497689B (en) * 2017-09-15 2021-03-12 高露洁-棕榄公司 Oral care implement
USD845637S1 (en) 2017-11-16 2019-04-16 Colgate-Palmolive Company Oral care implement
CN113423304A (en) * 2019-03-22 2021-09-21 高露洁-棕榄公司 Oral care implement
KR102904788B1 (en) * 2023-05-24 2026-02-03 주식회사 해피디아 Omnidirectional toothbrush

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1924152A (en) * 1931-11-02 1933-08-29 David M Coney Toothbrush
US2042239A (en) * 1934-01-18 1936-05-26 Andrew J Planding Tooth brush
JPS5145386B2 (en) 1971-12-30 1976-12-03
JPS63204636A (en) 1987-02-20 1988-08-24 Hitachi Ltd semiconductor equipment
FR2773962B1 (en) * 1998-01-26 2000-03-03 Synthelabo TOOTHBRUSH HAVING GENCIVE MASSAGE RODS

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0064307A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105686324A (en) * 2014-12-29 2016-06-22 邹钰 High-efficiency toothbrush for alleviating tooth surface abrasion

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