WO2015098695A1 - Brosse à dents et brosse à dents électrique - Google Patents

Brosse à dents et brosse à dents électrique Download PDF

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Publication number
WO2015098695A1
WO2015098695A1 PCT/JP2014/083557 JP2014083557W WO2015098695A1 WO 2015098695 A1 WO2015098695 A1 WO 2015098695A1 JP 2014083557 W JP2014083557 W JP 2014083557W WO 2015098695 A1 WO2015098695 A1 WO 2015098695A1
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WIPO (PCT)
Prior art keywords
hair
toothbrush
central
bundle group
hair bundle
Prior art date
Application number
PCT/JP2014/083557
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English (en)
Japanese (ja)
Inventor
純 森口
徹弥 阿部
Original Assignee
ライオン株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ライオン株式会社 filed Critical ライオン株式会社
Priority to CN201480068711.0A priority Critical patent/CN105828746B/zh
Priority to KR1020167014740A priority patent/KR20160103982A/ko
Publication of WO2015098695A1 publication Critical patent/WO2015098695A1/fr

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    • 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
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B13/00—Brushes with driven brush bodies or carriers
    • A46B13/02—Brushes with driven brush bodies or carriers power-driven carriers
    • 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
    • A46B9/028—Bristle profile, the end of the bristle defining a surface other than a single plane or deviating from a simple geometric form, e.g. cylinder, sphere or cone
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • A46D1/02—Bristles details
    • A46D1/0238—Bristles with non-round cross-section
    • 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
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B2200/00—Brushes characterized by their functions, uses or applications
    • A46B2200/10—For human or animal care
    • A46B2200/1066—Toothbrush for cleaning the teeth or dentures

Definitions

  • the present invention relates to a toothbrush and an electric toothbrush including the toothbrush.
  • This application claims priority based on Japanese Patent Application No. 2013-270313 filed in Japan on December 26, 2013, the contents of which are incorporated herein by reference.
  • the present invention has been made to solve the above-mentioned problems, and an object thereof is to provide a toothbrush that has fine foaming even at a hair height of 8.5 mm or less, good appearance, good brushing feeling, and excellent stain removal. To do. Another object of the present invention is to provide an electric toothbrush having a handle having a toothbrush having the above-described features.
  • the present invention adopts the following configuration.
  • a head portion is provided at a tip of a neck portion, and a hair bundle is implanted in a plurality of flock holes formed on a flocked surface of the head portion.
  • a central hair bundle group composed of a plurality of central hair bundles arranged in parallel in the length direction of the head portion, and a width of the central hair bundle group located on both sides in the width direction of the head portion.
  • the heights of the hairs constituting the central hair bundle and the tapered hairs constituting the outer hair bundle are both 8.5 mm or less,
  • a toothbrush in which the flocking density of the central bristle bundle group is 400 / cm 2 or more and 1000 / cm 2 or less.
  • An electric toothbrush comprising the toothbrush according to any one of [1] to [6] on a distal end side of a handle portion.
  • the toothbrush of the present invention is a toothbrush in which a head portion is provided at the tip of a neck portion, and a hair bundle is implanted in a plurality of flock holes formed on the flocked surface of the head portion.
  • a central hair bundle group composed of a plurality of central hair bundles arranged side by side in the longitudinal direction of the head, and an outer hair bundle located on both sides in the width direction of the central hair bundle group and located on both sides in the width direction of the head portion
  • the outer hair bundle group is provided, and each of the hairs constituting the central hair bundle group and the outer hair bundle group has a hair height of 8.5 mm or less, and the hair of the outer hair bundle group Is a tapering hair, and is a high density flocking of 3000 / cm 2 or more, and the width of each outer hair bundle group on both sides in the width direction of the head part is 20% or more relative to the lateral width of the head part, 30 % or less, and the flocking density of the central tuft group 400 / cm 2 or more, 1000 / and characterized in that m 2 or less.
  • the toothbrush of this invention WHEREIN: It is preferable that ratio of the total flocking number of the hair of the said center hair
  • the central bristle bundle can use irregular cross-section bristles.
  • the hair end cut shape of the central bristle bundle group can be corrugated.
  • the outer bristle bundle is shorter on the outer side than the inner side in one flocked hole, and the difference in bristle length can be 0.5 to 1.5 mm.
  • the electric toothbrush of the present invention is characterized in that the toothbrush described in any of the above is provided on the distal end side of the handle portion.
  • the height of the bristles constituting the central bristle bundle and the tapered bristles constituting the outer bristle bundle is 8.5 mm or less, and the toothbrush suitable for portability is shorter than a general toothbrush.
  • the outer hair bundle group is set as a tapered hair, and having a high density of 3000 hairs / cm 2 or more, it is possible to provide a toothbrush capable of making the foam of the dentifrice fine in a reduced length.
  • the width of each outer hair bundle group which is composed of tapered hairs and located on both sides in the width direction of the head part, is set to 20-30% of the lateral width of the head part, thereby securing the necessary width as the outer hair bundle group.
  • the toothbrush that is comfortable to touch and can provide a toothbrush excellent in ease of movement of the bristles by smoothening the movement of the tapered bristles without excessively widening the width of the outer bristle bundle group. Moreover, the toothbrush provided with sufficient stain removal ability can be provided in the hair length shortened by making the flocking density of the center bristle bundle group into 400 / cm 2 or more and 1000 / cm 2 or less.
  • the contact comfort can be improved by making the height of the central bristle bundle group one step lower than the height of the outer bristle bundle group.
  • the stain removal force can be increased by making the cross-section of the bristles of the central bristle bundle group an irregular cross-section.
  • the “cross section” means a cross section when cut in a direction perpendicular to the longitudinal direction.
  • the outer hair bundle is shorter on the outer side than the inner side in one flocking hole, and by making the difference in hair length 0.5 to 1.5 mm, the ease of movement of the hair tip is further improved, It has the effect of increasing the penetration into the tooth neck.
  • the toothbrush of the present invention is suitable for an electric toothbrush, and by providing a tip toothbrush at the tip of the handle part, the foaming of the dentifrice is made to be fine foaming while shortening the bristle length as an electric toothbrush suitable for carrying, An electric toothbrush with good foamability can be provided. Moreover, when it is set as the structure which can mount
  • the toothbrush 1 of the present embodiment includes a narrow plate-like head portion 3 on the distal end side of the neck portion 2.
  • the head portion 3 has a substantially rectangular plate shape extending along the axis L of the neck portion 2, and a plurality of hair heads 3 ⁇ / b> A along the length direction of the head portion (direction parallel to the axis L).
  • the flocking holes 5 and 6 are formed, the hairs are planted in the flocking holes 5 and 6, and the hair bundle groups 7 and 8 are formed.
  • the head portion 3 can be formed to have a length of about 15 mm to 20 mm, a thickness of about 2.0 mm to 4.0 mm, a width of about 7.5 mm to about 10.5 mm.
  • the length of the flocked region in the head portion (that is, the length from the hairline on the tip side to the hairline on the neck side) is preferably 15 to 20 mm.
  • the width of the flocked region in the head portion is preferably 6.0 to 9.5 mm. By setting it as this range, a sufficient hair
  • the material constituting the neck portion 2 and the head portion 3 is selected in consideration of the rigidity and mechanical characteristics required for the toothbrush 1, for example, a high-hardness resin having a flexural modulus (JIS K7203) of 500 MPa to 3000 MPa. Yes.
  • high-hardness resins include polypropylene (PP), polyethylene terephthalate (PET), polycyclohexylene dimethylene terephthalate (PCT), polystyrene (PS), acrylonitrile / butadiene / styrene resin (ABS), and cellulose propio.
  • a plurality are arranged along the length direction of the head unit 3 at predetermined intervals on both sides in the width direction (positions close to the long sides (ends) on both sides of the head unit 3).
  • the outer flock holes 5 are formed in the example 1.
  • tapered hairs 10 are planted by flocking means using a flat wire or the like, and outer hair bundles 11 composed of aggregates of tapered hairs 10 are formed in each outer flock hole 5.
  • Outer hair bundle groups 7 are formed on both sides of the head portion 3 in the width direction by the hair bundle 11.
  • the outer hair bundle 11 may be one row in the length direction, or two or more rows.
  • the diameter of the outer flock holes 5 formed on both sides in the width direction of the head portion 3 is preferably in the range of 20% or more and 30% or less, and in the range of 25% or more and 28% or less with respect to the lateral width of the head portion 3. It is more preferable that In other words, in the toothbrush 1 of this embodiment, the width of each outer bristle bundle 11 is preferably in the range of 20% or more and 30% or less with respect to the lateral width of the head portion 3. This is because the height of the outer hair bundle 11 that is an aggregate of the tapered bristles 10 is 4.5 mm or more and 8.5 mm or less, and the hair length is shorter than that of a general toothbrush. It is a range necessary to make the feeling gentle and to ensure a clean feeling of the tooth neck and fine foaming of the dentifrice.
  • the tapered hair 10 in FIG. 4 has a substantially columnar shape, and has a diameter that gradually decreases from the base portion 10a toward the tip portion 10b.
  • the lengths (hair lengths) of the tapered hairs 10 protruding from the openings of the flock holes 5 are substantially the same length.
  • the center flocking holes 6 are formed in a plurality of rows (three rows in the example of FIG. 1) at predetermined intervals in the length direction of the head portion 3.
  • hairs 12 made of straight hairs having an irregular cross section such as a star-shaped cross section are planted by flocking means using a flat wire or the like, and a set of bristles 12 is gathered in each central flocking hole 6.
  • a central hair bundle 13 made of a body is formed.
  • Straight hair is hair having substantially the same cross-sectional shape and cross-sectional area except for a rounded portion at the tip (a portion where the corner of the tip is chamfered).
  • the irregular cross section means that the cross-sectional shape of the hair 12 is a shape other than a circle.
  • FIG. 5 shows an example of the hair 12 made of straight hair having a star-shaped cross section.
  • the central hair bundle group 8 is configured by the central hair bundle 13 that is aligned and formed on the center side in the width direction of the head portion 3.
  • the central hair bundle 13 may be three or more rows or less than three rows. In the case of three or more rows, it is preferably arranged in a staggered pattern.
  • the cross-sectional shape of the hair 12 is preferably an irregular cross-sectional shape such as a star shape, a three-leaf clover shape, or a four-leaf clover shape, but is not limited to these cross-sectional shapes, and is circular, elliptical, polygonal (for example, triangular) , Quadrilateral, pentagon, hexagon, etc.).
  • a taper hair may be sufficient.
  • the same ones as described in the explanation of the outer hair bundle 11 may be used.
  • Examples of the constituent material of the tapered hair 10 or the hair 12 include polyamide (eg, 6-12 nylon, 6-10 nylon), polyester (eg, polyethylene terephthalate, polybutylene terephthalate, polytrimethylene terephthalate), polyolefin (eg: Synthetic resin materials such as polypropylene) and elastomers (eg, olefins and styrenes) can be mentioned. These synthetic resin materials may be used alone or in combination of two or more.
  • the multi-core structure which has the core part and the sheath part of the at least 1 layer or more provided in the outer side of the said core part may be sufficient as the taper hair 10 or the hair 12 for hair.
  • the thickness of the thickest part of the taper hair 10 is not specifically limited, It is preferable that it is thin in the point which makes the contact
  • the density of the hair is too high and the taper hair is difficult to move.
  • tapered hair having a thickness exceeding 5 mil high-density flocking described later cannot be realized.
  • the thickness of the taper hair 10 is in the range of 3 to 5 mil, it is possible to improve the contact with the gums and increase the number of hairs that can be implanted in one outer flocking hole 5, making it easy to obtain high density flocking. It can be.
  • high-density flocking refers to a state where flocking is performed at 3000 / cm 2 to 12000 / cm 2 . All the hairs constituting the hair bundle may have the same thickness, or two or more kinds of hairs having different thicknesses may be combined.
  • the thickness of the bristles 12 is not particularly limited, but is preferably in the range of 7 mils to 9 mils in thickness from the viewpoint of improving stain removal and the feeling of hitting the gums. If the thickness of the resin material is in the range of 7 to 9 mil, hair 12 having bristle strength effective for stain removal can be obtained.
  • the hair length of the tapered hair 10 (projection length from the opening of the flocked hole 5) is in the range of 4.5 mm or more and 8.5 mm or less, more preferably 5.0 mm or more and 7. It is formed in a range of 5 mm or less.
  • the length of the hair 12 can be the same as or slightly shorter than the tapered hair 10.
  • the value shorter than the taper hair 10 can be selected in the range of 8.5 mm or less and 4.5 mm or more.
  • the ratio of the height of the taper hair 10 to the hair 12 is expressed as [taper hair height] / [height of hair 12], preferably 1.0 to 2.0, and 1.0 to 1. 2 is more preferable.
  • the hair bundle of the tapered bristles 10 is shorter on the outer side than the inner side in one flocking hole, and by making the difference in hair length 0.5 to 1.5 mm, the movement of the hair tip and the ability to enter the neck are improved. improves.
  • the outside of the hair bundle is a portion of the hair bundle that occupies a region of 0 to 50% from the peripheral edge of the hair bundle when the cross-sectional area of the hair bundle is 100% by area. When the cross-sectional area of the bundle is 100 area%, it is the portion of the hair bundle that occupies a region of 0 to 50% from the center of the hair bundle.
  • the flocking density of the taper hair 10 (the flocking density of the outer hair bundle 11) needs to be high density flocking of 3000 / cm 2 or more in order to obtain fine foaming of the dentifrice, and is 3500 / cm 2 or more. High-density flocking is preferable. Moreover, it is preferable that the upper limit of the flock density of the taper hair 10 shall be 12000 pieces / cm ⁇ 2 >. If the flocking density is too high, the tapered hair 10 becomes difficult to move, and the original characteristics of the tapered hair, such as entry into the tooth neck, may be impaired. When the flocking density is less than 3000 / cm 2 , fine bubbles are hardly formed.
  • the flocking density of the central hair bundle group 8 is 400 / cm 2 or more and 1000 / cm 2 or less. If the flock density of the central hair bundle group 8 is less than 400 / cm 2 , the stain removing power is insufficient, and if the flock density exceeds 1000 / cm 2 , the contact feeling becomes worse. It is more preferable that the hair density of the central hair bundle group 8 is 700 / cm 2 or more and 1000 / cm 2 or less.
  • the area of the central flocking region is the flocking area of the central flock group 8, and is the area of the region where the outer periphery of the flocked hole is connected by a tangent line so as to surround the central flock 13 constituting the central flock group 8. Means. That is, it is the area of a region composed of the area of the central flocking hole 6 and the area around the central flocking hole 6.
  • the area of the central flocking region is preferably 30 to 50 area%, where the total area of the flocked surface 3A is 100 area%.
  • the area of the outer flocked region is the flocked area of the outer flock group 7, means the total area of the outer follicle holes 5, and surrounds the outer follicles 11 constituting each outer flock group 7.
  • the area of the outer flocked region is preferably 50 to 65% by area, where the total area of 3A on the flocked surface is 100% by area.
  • the ratio of the total number of flocks of the hairs 12 of the central hair bundle group 8 and the total number of flocks of the taper hairs 10 of the outer hair bundle group 7 is [the hairs 12 of the central hair bundle group 8
  • the total number of flocks] / [total number of flocks of the tapered hairs 10 of the outer hair bundle group 7] is preferably 0.05 or more and 0.25 or less.
  • the ratio of the number of flocks the total number of flocks on the inner side / the total number of flocks on the outer side. Satisfying this relationship makes it possible to obtain good contact with the gums and stain removal power.
  • the ratio of the flocked area of the central hair bundle group 8 to the flocked area of the outer hair bundle group 7 is [flocked area of the central hair bundle group 8] / [flocked area of the outer hair bundle group 7]. It is preferable to select a range of 0.9 or less. From the viewpoint of ensuring stain removability, the range of 0.50 to 0.90 is preferable, and the range of 0.70 to 0.90 is more preferable.
  • the central hair bundle 13 has a longitudinal cross section, that is, a cross-sectional shape when cut in the vertical direction along the axis L (hereinafter also referred to as a hair-end hair shape) as shown in FIG. It is also preferable to use a waveform.
  • the longitudinal cross section of the central hair bundle group 8 a triangular wave type, the stain removal effect can be further enhanced.
  • the difference between the hair having the highest hair length and the hair having the lowest hair length is preferably 0.5 to 2.0 mm.
  • the angle of the triangle apex is preferably 80 to 120 °. It is preferable that one head portion is configured to have 3 to 8 triangular vertices.
  • the difference between the highest hair in the central hair bundle group 8 (the convex hair) and the height of the hair in the outer hair bundle group 7 Is preferably 1 to 3 mm, and the difference between the hair height of the lowest hair (recessed hair) in the central hair bundle group 8 and the hair in the outer hair bundle group 7 is 1.5 to 4 mm.
  • the shape of the tip of the hair 12 in the central hair bundle group 8 is preferably a shape with chamfered corners.
  • a method for implanting the tapered bristles 10 and the hairs 12 known methods such as a method of driving a flat wire into a flocked hole and a method of heat welding can be applied.
  • a method of driving a flat wire a plurality of bristles are bundled and folded in half, and a hair retainer is implanted in each flocked hole by inserting a retaining tool called a flat wire between them.
  • the flat line passes through the center of the flocked hole and is placed in the flocked hole so as to straddle the flocked hole.
  • the material of the flat wire include metals such as brass and stainless steel, and other examples include hard plastic and biodegradable plastic.
  • the length, width, and thickness of the flat line may be arbitrarily adjusted according to the hair bundle and flock hole, but the length of the flat line is usually larger than the diameter of the flock hole and the width of the flat line is the width of the flock hole. Be smaller than the depth. Moreover, by adjusting the thickness of the flat wire, the hair bundle can be securely fixed in the flock hole and the gap can be reduced. Further, in order to prevent the flat wire from coming out of the flocked hole, the total length of the portions protruding from both sides of the flocked hole is preferably 0.3 to 0.6 mm.
  • the toothbrush 1 shown in FIG. 1 is a model perspective view showing an outline of the toothbrush, and all of the bristles 12 constituting the outer bristle bundle 11 and the central bristle 12 are completely the same length.
  • the tapered hairs 10 and the hairs 12 are not completely uniform after flocking, and the lengths are slightly uneven. Also good.
  • the tapered bristles 10 and the bristles 12 are not completely perpendicular to the flocked surface 3A, and may be flocked so as to slightly spread outward from the flocked holes 5 and 6.
  • the hair of each of the central bristle bundle group 8 and the outer bristle bundle group 7 has a hair height of 8.5 mm or less and is shorter than a general toothbrush.
  • the outer bristle bundle group 7 is composed of the taper bristles 10, and high-density flocking of 3000 / cm 2 or more can make the dentifrice foam fine.
  • the contact feeling can be improved by making the height of the central hair bundle group lower than the height of the outer hair bundle group.
  • the outer hair bundle group 7 is composed of tapered hairs 10, and the width of each outer hair bundle group 7 located on both sides in the width direction of the head portion 3 is in the range of 20-30% with respect to the lateral width of the head portion 3. By doing so, it is possible to secure the necessary width as the outer bristle bundle group 7 and to make the toothbrush 1 comfortable to hit, and the movement of the tapered bristles 10 can be made smooth.
  • the distance from the end of the head portion in the width direction to each outer hair bundle group 7 is preferably 0.5 to 1.0 mm.
  • the ratio of the total number of flocks of the bristles 12 in the central bristles group 8 to the total number of flocks of the taper hairs 10 in the outer bunch group 7 is expressed as [total number of flocks of bristles 12] / [tapered hairs].
  • the total number of flocks of 10] is set to 0.05 or more and 0.25 or less, so that the number of hairs 12 in the central hair bundle group 8 can be secured and a toothbrush effective for stain removal can be provided.
  • the sizes of the outer flock holes 5 may be the same or different.
  • the diameter is preferably 2.0 to 2.6 mm.
  • the size of the central flocking hole 6 may be the same or different.
  • the diameter is preferably 1.0 to 1.4 mm.
  • the ratio of the diameter of the central flocking hole 6 to the diameter of the outer flocking hole 5 is 0.4 to 0.7, expressed as [diameter of central flocking hole 6] / [diameter of outer flocking hole 5]. preferable.
  • the distance from the central part of the central bristle bundle 13 to the central part of the closest central bristle bundle 13 is preferably 1.0 to 2.0 mm.
  • the distance from the central portion of the central hair bundle 13 to the central portion of the outermost hair bundle 11 that is closest is preferably 2.0 to 3.0 mm.
  • the ratio between the total number of central hair bundles 13 in the central hair bundle group 8 and the total number of outer hair bundles 11 in the outer hair bundle group 7 is [total number of central hair bundles 13] / [outside hair bundle 11].
  • the total number of bundles] is preferably 1.0 to 2.0.
  • the toothbrush 1 of the present embodiment may be applied to an electric toothbrush that vibrates when electrically driven.
  • the toothbrushes of Examples 1 to 7 are used for the brush portion of a denter system sonic assisted brush produced by Lion Co., Ltd. and used while being vibrated by electrical drive, the foaming becomes faster and the bubble diameter becomes larger. It becomes small and foamability improves more. Furthermore, the stain removal effect is also improved.
  • a battery 25 and a control circuit (not shown) for controlling driving of each part are incorporated in a watertight manner inside a cylindrical handle part 21.
  • a vibrator 27 for generating vibrations such as ultrasonic vibrations and sound wave vibrations is built in the front end side of the battery, and a cap A28 for loading / unloading the battery is provided on the rear end opening side of the handle part 21.
  • An example is one in which operation buttons are provided in the part.
  • the cylindrical cap B30 shown in FIG. 6 can be detachably attached to the distal end side of the handle portion 21.
  • the battery 25 may be a primary battery (for example, an AA or AAA battery) or a secondary battery (for example, a nickel cadmium battery, a nickel hydrogen battery, or a lithium ion battery).
  • the control circuit is connected to the battery 25, and when a user operates an operation button provided on the handle portion 21, the control circuit generates a control signal corresponding to the operation, and a vibrator described later based on the control signal. It controls the power supply to and the drive of the vibrator.
  • the vibrator 27 is electrically connected to the control circuit in the handle portion 21 through wiring, and vibrates when electric power is supplied.
  • the electric toothbrush 20 does not have to include the control circuit.
  • the control circuit For example, when the user operates the operation button, power is directly supplied from the battery to the vibrator so that the vibrator is driven. It may be.
  • a tapered connecting portion 21a is formed on the distal end side of the handle portion 21, and a metal connecting pin 21b for connecting to the proximal end 2b of the neck portion 2 of the toothbrush 1 is formed on the distal end portion of the connecting portion 21a.
  • An insertion hole for inserting the connection pin 21b is formed in the lower end surface of the base end 2b, and the toothbrush 1 is attached to and detached from the handle portion 21 by inserting the connection pin 21b into the insertion hole. It is installed freely.
  • the toothbrush 1 demonstrated previously is the toothbrush 1 which has various outstanding effects as mentioned above, when it applies to the electric toothbrush 20 as shown in FIG. 6, in the electric toothbrush 20 suitable for carrying,
  • the electric toothbrush 20 By forming the outer hair bundle group 7 from the tapered hairs 10 and forming a high-density flock of 3000 / cm 2 or more, the foaming of the dentifrice can be made fine.
  • the electric toothbrush 20 having excellent cervical brushing feeling and excellent penetration into the cervical region by the tapered bristles 10 while the bristle length is shortened to 8.5 mm or less can be provided.
  • the electric toothbrush 20 that does not occur can be obtained, and the width of the outer bristle bundle group 7 is not made too large so that the movement of the taper bristles 10 is smoothed, and the tooth neck cleaning performance is gentle on the tooth neck.
  • An excellent electric toothbrush 20 can be provided.
  • the electric toothbrush 20 when the outer bristle bundle 13 is applied to the tooth neck while being vibrated, the feeling of brushing by the outer bristle bundle 13 becomes stronger than during manual operation.
  • the movement of the taper bristles 10 is smooth and does not impair the contact with the tooth neck, a good tooth neck brushing feeling can be obtained.
  • the electric toothbrush 20 that can achieve both good contact with the tooth neck and improved cleaning of the tooth neck. Can provide.
  • the ratio of the total number of flocks of the hair in the central hair bundle group 8 to the total number of flocks of the tapered hair 10 in the outer hair bundle group 7 is calculated as [total number of flocks of hair in the central hair bundle group 8] / [outer hair bundle]. Expressed by the total number of flocks of the taper hairs 10 of the group 7], the number of the hairs 12 of the central hair bundle group 7 is secured by setting the number to 0.05 or more and 0.25 or less, which is effective for removing stains.
  • a toothbrush 20 can be provided.
  • the toothbrush 1 can be covered by attaching the cap 30 to the handle portion 21, so that the portability can be improved.
  • the toothbrush 1 can be prevented from becoming dirty when stored in a handbag, bag, pouch or the like.
  • the diameter of the cap 30 (the diameter measured from the outside of the cap) is desirably as small as possible. For example, assuming that a woman accommodates in a pouch together with cosmetics such as lipstick, it is desirable that the diameter of the cap 30 is about ⁇ 14 to ⁇ 20 mm in view of not impairing portability compared to the diameter of lipstick or the like.
  • the bristle length of the tapered bristles 10 is 4.5 mm or more as described in the description of the toothbrush 1.
  • a range of 8.5 mm or less is desirable.
  • the effects obtained by providing the toothbrush 1 as described above can be obtained.
  • the shape of the cap is a rectangular parallelepiped, the width is preferably 9.0 to 20 mm and the depth is 12 to 20 mm.
  • five outer flock holes with the diameters shown in Table 1 are placed at equal intervals on both sides of the head part (length 18.95 mm, width 8.7 mm, thickness 3.5 mm), between adjacent outer flock holes.
  • a total of 10 or 12 (Example 7) outer flock holes were formed with an interval of 3.20 (center-to-center distance) mm.
  • taper hair (described as ST in Table 1) was planted using a flat wire at a flocking density shown in Table 1 so that the hair length was 6 mm.
  • the hair diameter for use, the area of the outer flocking region, the outer flocking density, and the hair cutting shape (profile) are described. In the profile 1.0 mm of Example 8, the outside is shorter than the inside in the flocked hole, and the hair height difference is 1. mm.
  • a central flocking hole having a diameter shown in Table 1 as a central flocking hole is provided on the center side of the head portion in the length direction of the head portion, six outer central flocking holes, five inner central flocking holes, and an outer central flocking hole.
  • the zigzag pattern means an arrangement in which the central flock holes in the adjacent rows are arranged at half the pitch of the central flock holes in a specific row arranged in the axis L direction.
  • the spacing between adjacent central flock holes arranged in the length direction of the head portion is 1.6 mm
  • the row spacing of the central flock holes arranged in the width direction of the head portion is 0.9 mm. did.
  • the distance (center-to-center distance) between the outer flock holes along the width direction of the head portion was 4.90 mm, and the separation distance from the center of the head portion tip was set to 2.35 mm in the two center flock holes arranged at the head portion tip position.
  • straight hair cross section five-leaf type: star shape
  • Table 1 shows the diameter of the central flock hole, the diameter of the hair, the area of the central flocked area, the central flocking density, and the hair cutting shape (profile).
  • “ripple wave” means a triangular wave shape (the longest hair length (length to the top of the wave) is 5 mm, the shortest hair length (length to the bottom of the wave) and the longest hair length. The difference in hair length is 1.0 to 1.5 mm), and “flat” means that the hair tip shape is horizontal.
  • a toothbrush was manufactured based on each specification shown in Table 2.
  • the following evaluation tests were performed using the toothbrush of the example and the toothbrush of the comparative example, and the results of each test are shown in Tables 1 and 2.
  • ⁇ Foam texture evaluation test> The toothbrush of each example and each comparative example was set on a brushing machine manufactured by Lion Co., Ltd., and 1 g of a dentifrice and 2 times the amount of water were placed on the brush plate, and the brushing force was 200 g and 60 times of brushing were performed. After the brushing, the bubbles were collected, and the diameters of 20 bubbles were randomly measured with an optical microscope. The smaller the bubble diameter, the finer the bubbles.
  • the numerical values in the table represent the diameter (mm) of the bubbles.
  • the evaluation criteria are as follows. A: The average diameter of 20 bubbles is less than 0.12 mm. O: The average diameter of 20 bubbles is 0.12 mm or more and less than 0.16 mm. ⁇ : The average diameter of 20 bubbles is 0. .16 mm or more and less than 0.20 mm x: 20 bubbles having an average diameter of 0.20 mm or more
  • ⁇ Stain removal evaluation test> 1 Method for producing stain-attached HAP A hydroxyapatite pellet (HAP) surface (made by HOYA, diameter 7 mm ⁇ thickness 3.5 mm) was treated with sand blasting, and then washed with an ultrasonic cleaner in an aqueous neutral detergent solution. The surface was etched with a 30% aqueous phosphoric acid solution (for 10 minutes), washed with water, and naturally dried.
  • HAP hydroxyapatite pellet
  • the tannin extract was prepared in 1200 mL of boiling ion-exchanged water, 50 g of Japanese tea (brand name: Oimatsu), 5 bags of black tea (made by Unilever Japan Co., Ltd., Blis Teaback), instant coffee (trade name Nescafe, Nestlé) (Made by Nippon Co., Ltd.) 12 g was added and allowed to stand overnight, and Japanese tea and black tea were removed by filtration.
  • the surface color of the produced stain-attached HAP was measured using a spectroscopic color difference meter (manufactured by Nippon Denshoku Industries Co., Ltd., model: SE-2000), and the value was defined as L1.
  • Stain removal test 1 g of the dentifrice composition was diluted with twice the amount of purified water to prepare a dentifrice dispersion.
  • the tannin iron stain adhesion hydroxyapatite pellet produced by the above method was immersed in a dentifrice dispersion, and the toothbrushes of each Example and each Comparative Example were evaluated by the following methods.
  • the toothbrushes of each example and each comparative example were set on a brushing machine manufactured by Lion Co., Ltd., and the Lab value (L2) of HAP after 20 times of brushing was measured.
  • the stain removal effect was evaluated from the stain removal amount according to the following criteria.
  • the numerical values in the table represent the amount of stain removal. Evaluation criteria for stain removal effect A: Stain removal amount 12 or more ⁇ : Stain removal amount 9 or more and less than 12 ⁇ : Stain removal amount 6 or more and less than 9 ⁇ : Stain removal amount 6 or less
  • the central hair bundle group consisting of a plurality of hairs arranged side by side in the length direction of the head portion and an outer hair bundle group consisting of tapered hairs
  • the central hair bundle group When the hair height (hair length) of each of the hairs constituting the outer hair bundle group is 8.5 mm or less, the hair is a high-density flocking having 3000 or more taper hairs / cm 2 , and the outer hair bundle
  • the width of the group is 20 to 30% of the lateral width of the head portion and the flocking density of the central bristle bundle group is 400 / cm 2 or more and 1000 / cm 2 or less has the following characteristics. .
  • the fine foaming property of the dentifrice, the ease of movement of the hair tip, and the taper hair provided on both sides of the head part are present in a necessary and sufficient ratio, so there is no hair loss in the outer hair bundle group, and the appearance
  • the toothbrush which was excellent and was excellent in stain removal property by presence of a central bristle bundle group can be provided.
  • the toothbrush of Comparative Example 1 has a shortage of fine foaming because the outer flocking density of the tapered bristles is 2496 / cm 2 lower than 3000 / cm 2 .
  • the toothbrush of Comparative Example 2 is a toothbrush in which the diameter of the outer flock hole is small and the ratio of one outer bristle bundle group is less than 20% with respect to the lateral width of the head portion. Was small, leading to a sense of hair loss and poor appearance. That is, even when the outer flocking density of the taper hair exceeds 3000 / cm 2 , the width of the outer hair bundle group is small, which leads to a feeling of hair loss when the entire toothbrush is viewed. In addition, since the width of the outer bristle bundle group was small, the contact comfort of the toothbrush was poor.
  • the toothbrush of Comparative Example 3 is an example in which the diameter of the outer flock hole is increased to 34.5% with respect to the width of the head portion, but the width of one outer bristle bundle is too large with respect to the width of the head portion, There was a limit to the ease of movement of the tapered hair. In addition, the density of central flocking was small, and the stain removal power was insufficient.
  • the toothbrush of Comparative Example 4 was a sample in which the bristle length was shortened to 4.0 mm for both the central bristles and the outer bristles. If the hair length is too short, the width of the outer hair bundle with respect to the width of the head portion is a desirable value, and even if the ratio of the number of flocks is a desirable value, the ease of movement of the hair is lost and the appearance is also impaired. This made me feel uncomfortable.
  • the toothbrush of Comparative Example 5 is an example in which the center flocking density exceeds 1000 / cm 2 but is too large, the ease of movement of the hair is impaired, and the stain removal power is also insufficient.
  • each of the hairs in the central hair bundle group and the outer hair bundle group is a toothbrush suitable for portable use in which the hair height is 8.5 mm or less and shorter than a general toothbrush,
  • the hair bundle group is a taped hair and making a high density planting of 3000 / cm 2 or more, it is possible to provide a toothbrush capable of making the foam of the dentifrice fine in a reduced length.
  • the width of each outer hair bundle group which is composed of tapered hairs and located on both sides in the width direction of the head part, is set to 20-30% of the lateral width of the head part, thereby securing the necessary width as the outer hair bundle group.
  • the toothbrush that is comfortable to touch and can provide a toothbrush excellent in ease of movement of the bristles by smoothening the movement of the tapered bristles without excessively widening the width of the outer bristle bundle group. Moreover, the toothbrush provided with sufficient stain removal ability can be provided in the hair length shortened by making the flocking density of the center bristle bundle group into 400 / cm 2 or more and 1000 / cm 2 or less.

Abstract

La présente invention concerne une brosse à dents, dans laquelle des ensembles de brins sont ancrés dans une pluralité de trous d'ancrage de brins formés dans une surface d'ancrage de brins d'une section tête, la brosse à dents étant caractérisée en ce que : la surface d'ancrage de brins comprend un groupe d'ensembles de brins centraux comprenant une pluralité d'ensemble de brins centraux disposés en parallèle dans la direction de longueur de la section de tête, et des groupes d'ensembles de brins extérieurs comprenant des ensembles de brins extérieurs qui sont situés sur les deux côtés dans la direction de largeur de la section de tête et sont situés sur les deux côtés dans la direction de largeur du groupe d'ensembles de brins centraux ; les ensembles de brins extérieurs qui constituent les groupes d'ensembles de brins extérieurs sont formés de brins effilés ; la densité de brins ancrés est d'au moins 3000 brins/cm2 ; la largeur de chacun des groupes d'ensembles de brins extérieurs sur les deux côtés dans la direction de largeur de la section de tête est comprise entre 20 et 30 % par rapport à l'étendue de la section tête ; les brins utilisés qui constituent les ensembles de brins centraux et les brins effilés qui constituent les ensembles de brins extérieurs ont une hauteur de 8,5 mm ou moins ; et la densité de brins ancrés du groupe d'ensemble de brins centraux est comprise entre 400 et 1000 brins/cm2.
PCT/JP2014/083557 2013-12-26 2014-12-18 Brosse à dents et brosse à dents électrique WO2015098695A1 (fr)

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CN201480068711.0A CN105828746B (zh) 2013-12-26 2014-12-18 牙刷和电动牙刷
KR1020167014740A KR20160103982A (ko) 2013-12-26 2014-12-18 칫솔 및 전동 칫솔

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EP2918191B1 (fr) 2014-03-11 2024-01-24 The Procter & Gamble Company Tête pour un instrument de soin buccal
JP6973900B2 (ja) * 2016-05-31 2021-12-01 花王株式会社 歯ブラシ
EP3251548B1 (fr) 2016-06-03 2024-02-14 The Procter & Gamble Company Filament pour un instrument de soins buccaux et ledit instrument
ES2795427T3 (es) * 2016-06-03 2020-11-23 Procter & Gamble Cabezal para un utensilio de cuidado bucal y utensilio de cuidado bucal
CN109414734A (zh) * 2016-07-19 2019-03-01 夏普株式会社 清洗器
US10251470B1 (en) 2017-10-10 2019-04-09 The Procter & Gamble Company Head for an oral care implement and oral care implement
US10869546B2 (en) 2017-10-10 2020-12-22 The Procter & Gamble Company Tuft and head for an oral care implement and oral care implement
US10869545B2 (en) 2017-10-10 2020-12-22 The Procter & Gamble Company Filament for an oral care implement and oral care implement
US11219302B2 (en) 2017-10-10 2022-01-11 The Procter & Gamble Company Head for an oral care implement and oral care implement
USD883677S1 (en) 2018-12-13 2020-05-12 Colgate-Palmolive Company Toothbrush
CN116616554A (zh) 2018-12-13 2023-08-22 高露洁-棕榄公司 口腔护理器具
WO2020118602A1 (fr) 2018-12-13 2020-06-18 Colgate-Palmolive Company Instrument de soins buccaux
USD961269S1 (en) 2020-07-31 2022-08-23 Colgate-Palmolive Company Oral care implement
CN112972040A (zh) * 2021-02-08 2021-06-18 好维股份有限公司 一种电动牙刷头及其制作方法
USD1024571S1 (en) 2022-06-17 2024-04-30 Colgate-Palmolive Company Oral care implement
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JP2012034845A (ja) * 2010-08-06 2012-02-23 Lion Corp 歯ブラシ
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CN105828746A (zh) 2016-08-03
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CN105828746B (zh) 2017-10-24
KR20160103982A (ko) 2016-09-02

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