KR20150136466A - Toothbrush - Google Patents

Abstract

The present invention relates to a toothbrush having a first gathering group (30) having a number of bristle ends of 1000 to 16000 / cm 2 in an area of 10 to 80% of the area of a bristle area of the head part (2). A second gathering group 40 having a number of bristle ends of less than 1000 / cm 2 may be formed on the outer side of the first gathering group 30 in the flocking area of the head unit 2, The elastic member may protrude from the outer side of the first full-wave group 30. According to the present invention, a sufficient amount of oral preparation can be applied to the interdental region and the cervical region.

Description

Toothbrush {TOOTHBRUSH}

The present invention relates to a toothbrush.

The present application claims priority based on Japanese Patent Application No. 2013-075893, filed on April 1, 2013, the contents of which are incorporated herein by reference.

In order to improve the cleaning effect, toothbrushes, which are cleaning devices in the oral cavity, have been studied in the arrangement of the bristles bundled with bristles.

Background Art [0002] In recent years, with the heightened hygienic orientation, it is required to further improve the cleaning effect of toothbrushes.

To meet this demand, toothbrushes combining toothbrushes of different diameters and toothbrushes of different tooth lengths have been proposed.

In order to prevent tooth decay and prevent or improve periodontal disease, it is effective to clean the interdental space and the dental section by an oral preparation containing an effective ingredient such as a bactericide and an abrasive, and to kill the pathogenic bacteria causing the dental calculus. Therefore, the toothbrush is required to have a function of holding the oral preparation in a brush portion formed by the feet of a bristle while cleaning the inside of the mouth, and also capable of applying a sufficient amount of oral preparation to the interdental portion and the cervical portion.

Background Art [0002] A toothbrush has been proposed in the past for the purpose of enhancing the holding ability of an oral preparation.

For example, a side contour shape along the longitudinal direction of the toothbrush handle is A, a side contour shape along the minor axis direction is B, a side parallel to the major axis in the center position of the maximum width in the minor axis direction And a cross-sectional outline shape obtained by cutting a cross-sectional outline shape cut at a central position of a maximum width in the major axis direction in the long axis direction at a plane parallel to the minor axis is represented by D, A toothbrush having a ratio U / L of not less than 1.0 and not more than 3.0 with respect to at least one outline shape of outline shapes A, B, C, and D when the contour line length is U and the bottom contour line length is L (Patent Document 1). According to the invention of Patent Document 1, the end face of the brush portion has a specific shape to improve the holding ability of the effective component and to improve the bubble strength of the skirt base.

Japanese Patent Application Laid-Open No. 2003-250632

However, in the invention of Patent Document 1, it can not be said that the oral cavity preparation is still sufficient, and a sufficient amount of oral preparation can not be applied to the interdental space or the cervical portion.

It is another object of the present invention to provide a toothbrush capable of applying a sufficient amount of oral preparation to the interdental region and the cervical region.

A toothbrush of one aspect of the present invention is characterized in that a first set of crowns having a number of bristle ends of 1000 to 16000 teeth / cm 2 is formed in an area of 10 to 80% of the area of the toothbrush area of the head.

A second gathering group having a number of bristle ends of less than 1000 pieces / cm2 may be formed outside the first gathering group in the flocking area of the head, and the second gathering group may be formed so as to surround the first gathering group .

The elastic member may be protruded to the outside of the first gathering group in the flocking area of the head part, and the elastic member may protrude to surround the first gathering group.

Further, the present invention has the following aspects.

(1) A toothbrush having a first full-scale group in which the number of hair ends of the bristles is 1000 to 16000 / cm 2 in an area of 10 to 80% of the area of the hair-covering area of the head,

(2) The toothbrush of (1), wherein a second group of crows having a number of bristle ends of less than 1000 pieces / cm2 is formed outside the first group of the first group,

(3) The toothbrush according to (2), wherein the second collecting group is formed to surround the first collecting group,

(4) The toothbrush of (1), wherein the bristles of the head part are provided with elastic members protruding outside the first group of the first group,

(5) The toothbrush according to (4), wherein the elastic member protrudes to surround the first crowbar.

(Effects of the Invention)

According to the toothbrush of the present invention, a sufficient amount of oral preparation can be applied to the interdental region and the cervical region.

1A is a plan view of a toothbrush according to a first embodiment of the present invention.
Fig. 1B is a cross-sectional view taken along the line B1-B1 in Fig. 1A.
2 is a front view showing an example of a branch simulation.
3 is a front view showing an example of a branch simulation.
4 is a front view showing an example of a taper mock.
5A is a plan view of a toothbrush according to a second embodiment of the present invention.
5B is a sectional view taken along the line B5-B5 in Fig. 5A.
6A is a plan view of a toothbrush according to a third embodiment of the present invention.
6B is a side view of a toothbrush according to a third embodiment of the present invention.
7A is a plan view of a toothbrush according to a fourth embodiment of the present invention.
7B is a side view of the toothbrush according to the fourth embodiment of the present invention.
8A is a plan view of a toothbrush according to a fifth embodiment of the present invention.
8B is a side view of a toothbrush according to a fifth embodiment of the present invention.

(First Embodiment)

A toothbrush according to a first embodiment of the present invention will be described below with reference to Figs. 1A and 1B.

Figs. 1A and 1B show a state in which the pendulum is cut at the mother surface for convenience of explanation.

The toothbrush 1 shown in Figs. 1A and 1B includes a handle portion 3 having a long shape, a head portion 2 formed to extend from the handle portion 3, And a brush portion 4 formed thereon. In this embodiment, the brush unit 4 is formed of the first and second collecting groups 30 and 40.

In Figs. 1A and 1B, reference numeral 22 denotes one side edge in the width direction of the head portion 2, and reference numeral 24 denotes the other side edge in the width direction of the head portion 2.

The width direction of the head portion 2 is a direction orthogonal to the direction (longitudinal direction) from the head end 21 to the handle portion 3 in plan view.

The first overall assembly 30 is formed at the approximate center of the kneading surface 20 and is provided with a first mold bundle 32 that is stitched in two rows and five rows from the head end 21 toward the handle portion 3 Respectively. In the present embodiment, one first group of baluns 30 is formed by ten first bundles 32. Column " represents the number of alligators arranged in the width direction of the head portion 2, and " row " represents the unit which is aligned in the longitudinal direction of the head portion 2. [ The approximate center of the wedge surface 20 is 10 mm to 24 mm from the head end 21 toward the handle portion and from the side edge of one side of the head portion 2 in the width direction of the head portion 2 Mm to 8.2 mm.

In the present embodiment, the second group 40 is formed of a front set 40a, a first lateral set 40b, a second lateral set 40c, and a rear set 40d .

The front assembled group 40a is composed of a second group of legs 42 arranged in two rows by one row, three rows by one row, and four rows by one row from the head end 21 toward the first gathering group 30 And the rear assembled group 40d is formed from the first assemblage 30 toward the handle 3 in a row of four rows and one row and a row of two rows of two rows of rows Respectively. The first lateral gathering group 40b is formed of a second group of legs 42 laid one row by six rows along the side edge 22 of the head portion 2 and the second lateral gathering group 40c And a second pattern 42 that is stitched on the side edge 24 of the head portion 2 in one row by six rows.

In this way, the first group of digits 30 is surrounded by the second group of digits 40.

The second overall group 40 includes a second total group 40 having center-to-center pitches P3 and P4 around the first overall group 30 surrounding the first overall group 30, It means to be located.

In the toothbrush 1, the head part 2 and the handle part 3 are integrally formed in a long shape as a whole (hereinafter, the head part 2 and the handle part 3 are integrally formed) The head part 2 and the handle part 3 are obtained by injection molding, for example, a resin.

The resin constituting the handle body is determined in consideration of the rigidity and mechanical characteristics required of the toothbrush 1, and for example, a high hardness resin having a flexural modulus (JIS K7203) in the range of 500 to 3000 MPa . Examples of such high hardness resins include polypropylene (PP), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polycyclohexylenedimethylene terephthalate (PCT), polyacetal PS), acrylonitrile-butadiene-styrene resin (ABS), cellulose propionate (CP), polyallylate, polycarbonate, or acrylonitrile-styrene copolymer resin (AS). These may be used singly or in combination of two or more.

The handle portion 3 may be partially or wholly covered with a flexible resin such as an elastomer.

The size of the head portion 2 is determined in consideration of operability in the oral cavity, and is, for example, 10 to 15 mm in width, 15 to 40 mm in length, and 4 to 8 mm in thickness.

The first hair bundle 32 is stitched on a hair-removal hole 34 formed in the head portion 2. In this embodiment, the first pattern 32 has a columnar shape.

The number of bristles (the number of protrusions protruding from the hair-removing bore 34) in one first hair bundle 32 is not particularly limited, and is preferably 4 to 100, for example.

The length H1 from the mold core 20 to the tip of the first pattern 32 is determined in consideration of the thickness R1 of the first pattern 32 and the like, 6 to 13 mm is preferable. The first parent strands 32 may have the same parent length H1, or they may be mutually different.

The thickness R1 of the first pattern 32 is determined in consideration of the parent length H1 of the first pattern 32 and is preferably 1 to 3 mm, for example. The thickness R1 of all the first female molds 32 may be the same or different. The thickness R1 of the first mold bundle 32 is the thickness of the first mold bundle 32 in the mold core 20 and is equal to the inner diameter of the fillet hole 34. [

The center-to-center pitch P1 of the first pattern bundles 32 in the longitudinal direction of the head portion 2 is appropriately determined in consideration of the size of the hair-removal holes 34, the flocking pattern, and the like. The center-to-center pitch P1 is the center-to-center length of the first gathering portion adjacent to the longitudinal direction of the head portion 2 in the first pattern 32, preferably 2.0 mm to 4.0 mm, To 4.0 mm, and more preferably 2.5 mm to 3.5 mm.

The center-to-center pitch P2 of the first pattern 32 in the width direction of the head portion 2 is appropriately determined in consideration of the size of the hair-removal hole 34, the flock pattern, and the like. The center-to-center pitch P2 is the center-to-center length of the centers of the first legs 32 adjacent to the width direction of the head portion 2, is preferably 1.5 mm to 4.0 mm, Mm, and more preferably 2.0 mm to 3.0 mm.

The bristles (first bristles) constituting the first hair bundle 32 are not particularly limited, but may be bristles (so-called branch hair) whose tips are branched, for example. Bristles (tapered bristles) that are reduced in diameter toward the bristle end, brush bristles (straight bristles) having almost the same outer diameter except for the rounded portions at the bristle ends, spiral bristles, or crimped bristles; Among them, the branch mode or the taper mode is preferable, and the branch mode is more preferable. By using branch hair, the tip end density described later can be easily obtained, and the oral preparation can be kept better.

The first hair bundle 32 may be composed of one kind of first bristles or two or more kinds of first bristles combined.

As the branch hair, conventionally known tips can be used. For example, a feathered bristle having a hollow filament tip cut, or a tapered branch hair whose diameter is reduced as each branched portion is directed toward the distal end, Among them, a feathered bristle is preferable.

An example of the feathered bristles is shown in Fig. 2, at least two branched portions 74 are formed at the distal end of a columnar body portion 72 in the shape of a cylinder.

Examples of the feathered bristles include those described in JP-A-2005-131059 and the like.

An example of the tapered branching simulation is shown in Fig. 3 has three branched portions 84 formed at the tip of a trunk portion 82 having a three-leaf clover shape in cross section. The cross section of each branch section 84 is circular, and each branch section 84 is reduced in diameter toward its tip end.

As tapered branching members, there are disclosed, for example, Japanese Unexamined Patent Publications Nos. 2003-339445, 2010-82094, 2003-199626, 2001-169827, 9-98837, JP-A-3547672, JP-A-2003-339445, and JP-A-2013-39268.

An example of the taper simulation is shown in Fig. The tapered wrist 90 shown in Fig. 4 has a substantially cylindrical shape, and its distal end portion is gradually reduced in diameter from the base portion 90b toward the distal end 90a, so that its tip end 90a is pointed.

Means that the diameter of the tapered prism 90 (the diameter of a cross section perpendicular to the longitudinal direction of the tapered prism 90) gradually becomes smaller (smaller) from the base portion 90b toward the tip end 90a.

The material of the first bristles is appropriately determined in consideration of the kind of the first bristles, the manufacturing method, and the like. For example, polyamide such as 6-12 nylon, 6-10 nylon, PET, polybutylene terephthalate (PBT) , Polyesters such as polytrimethylene terephthalate (PTT), polyethylene naphthalate (PEN) or polybutylene naphthalate (PBN), polyolefins such as PP, elastomers such as olefin elastomers and styrene elastomers A resin material can be used. These synthetic resin materials may be used singly, or two or more kinds may be used in combination.

The shape of the cross-section of the first bristles is not particularly limited, and may be circular, such as, for example, a circular or oval shape; A polygon such as a triangle, a rectangle, a pentagon, or a star; A three-leaf clover type, or a four-leaf clover type. The cross-sectional shapes of the body portions of all of the first bristles may be the same or different.

The maximum diameter of the first bristles is not particularly limited. For example, when the cross section is circular, 3 to 12 mil (1 mil = 1/1000 inch = 0.025 mm) is preferable, and 4 to 10 mil is more preferable. The maximum diameters of the first bristles may be the same or different.

The shape of the cross section of the branch portion in the branch pattern is not particularly limited. For example, the shape of the branch portion may be a circular shape such as a true circular shape or an elliptical shape; A polygon such as a triangle, a rectangle, a pentagon, or a star; A three-leaf clover type, or a four-leaf clover type. The shape of the cross section of all the branch portions may be the same or different.

The number of branch simulation branches is not particularly limited, but is preferably 3 to 20, more preferably 7 to 15, for example. When the number of the branch simulation branches is three or more, the time for holding the oral preparation becomes longer. When the number is less than 20, the hair elasticity of the branch is not excessively flexible, and the cleaning effect becomes better.

The length from the boundary between the branching section and the trunk section to the edge of the branching simulation, that is, the length of the branching section (h1 in FIG. 2 and h2 in FIG. 3) is not particularly limited, but is preferably 0.5 to 10 mm, Is more preferable. When the length of the branch portion is 0.5 mm or more, the amount of the oral preparation capable of being held is increased. When the length is 10 mm or less, the hair elasticity of the branch portion is not excessively flexible.

The second hair bundle 42 is stitched on the hair-removal hole 44 formed in the head portion 2. In the present embodiment, the second pattern 42 has a cylindrical shape.

The number of bristles (second bristles) (the number of bristles protruding from the hair-kneading hole 44) in one second hair bundle 42 is not particularly limited, and is preferably 15 to 50, for example.

The length (i.e., parent length) H2 from the food wool face 20 to the tip of the second hair bundle 42 is determined in consideration of the thickness R2 of the second hair bundle 42 and the like, 6 to 13 mm is preferable. The parent lengths H2 of all the second hair bundles 42 may be the same or different.

It is preferable that the parent length H2 of the second hair bundle 42 is equal to or longer than the parent hair length H1 of the first hair bundle 32 or the hair length H1 of the first hair bundle 32 Is longer than the parent length (H1) of the first mold bundle (32). When the second hair bundle 42 is longer than the first hair bundle 32, the oral preparation is liable to be retained by the first hair bundle 30. In addition, if the second hair bundle 42 is longer than the first hair bundle 32, the second hair bundle 42 is easily penetrated into the interdental region and the cervical region, so that the interdental region and the cervical region can be cleaned more satisfactorily.

When the mother length H2 of the second hair bundle 42 is longer than the hair length H1 of the first hair bundle 32, the hair length difference H3 obtained by H2-H1 is preferably 0.5 to 2 mm More preferably 1 to 2 mm. If the parent length difference H3 is less than 0.5 mm, the effect of making the second hair bundle 42 longer than the first hair bundle 32 is difficult to obtain. If the hair bundle length H3 is more than 2 mm, It becomes difficult to enter the cervical region. When the parent length difference H3 is 0.5 to 2 mm, the effect of making the second hair bundle 42 longer than the first hair bundle 32 is easily obtained, and the first hair bundle 32 enters the interdental region and the cervical region It becomes easier to do.

The thickness R2 of the second hair bundle 42 is determined considering the hair length H2 of the second hair bundle 42 and is preferably 1 to 3 mm and more preferably 1.5 to 2 mm desirable. When the thickness R2 of the second pattern 42 is less than 1 mm, the second pattern 42 may become excessively soft and the cleaning effect may deteriorate. When the thickness R2 of the second hair shaft 42 is more than 3 mm, the second hair shaft 42 becomes hard to bend and the bristles constituting the second hair shaft 42 become difficult to enter the interdental region and the cervical region The cleaning effect may be deteriorated. When the thickness R2 of the second pattern 42 is 1 to 3 mm, the second pattern 42 is not excessively soft and the second pattern 42 is easily bent and the second pattern 42 are easily inserted into the interdental space and the cervical portion, and the cleaning effect is enhanced.

The thicknesses R2 of all the second hair bundles 42 may be the same or different. The thickness R2 of the second hair bundle 42 may be the same as or different from the thickness R1 of the first hair bundle 32. [

The thickness R2 of the second hair bundle 42 is preferably smaller than the thickness R1 of the first hair bundle 32 from the viewpoint of further enhancing the cleaning effect.

The thickness R2 of the second hair shaft 42 is the thickness of the second hair shaft 42 in the hair shaft 20 and is equal to the inner diameter of the hair shaft hole 44. [

The center-to-center pitch P3 of the second tufts 42 in the longitudinal direction of the head portion 2 is appropriately determined in consideration of the size of the fillet hole 44, the flocking pattern, and the like. The center-to-center pitch P3 is the center-to-center length of the second gathered portion adjacent to the longitudinal direction of the head portion 2 in the second patterned portion 42, preferably 1.5 mm to 4.0 mm, Mm to 3.0 mm, and more preferably 2.0 mm to 3.0 mm.

The center-to-center pitch P4 of the second tufts 42 in the width direction of the head portion 2 is properly determined in consideration of the size of the fillet holes 44, the flock pattern, and the like. The center-to-center pitch P4 is the length of the center of the second collective adjacent to the width direction of the head portion 2 in the second pattern 42, preferably 1.5 to 4.0 mm, Mm to 3.0 mm, and more preferably 2.0 mm to 3.0 mm.

The type of the second bristles is the same as that of the first bristles. The second bristles are preferably non-bristles. If the second bristles are uneven, the cleaning object can be cleaned with a stronger force.

The second bristles are preferably tapered in the case where the second bristles 42 are appropriately determined according to the effect required for the second bristles 42, for example, in the case of emphasizing the removal of contamination of the interdental region or the cervical region. In addition, when emphasizing the whitening of the tooth surface, for example, a straight hair or the like is preferable.

The second hair bundle 42 may be composed of one kind of second bristles, or two or more kinds of second bristles may be combined.

The material of the second bristles is the same as the material of the branching bristles. In addition, as the second bristles, bristles having a multi-core sheath structure having a core portion and at least one sheath portion formed on the outer side of the core portion can be mentioned. Since the multi-core sheath bristles can use different materials for the core part and the sheath part, it is easy to adjust the mechanical properties. For this reason, the multi-core sheath bristles are firm bristles and become bristles with higher scratches of tartar.

The ratio of the area of the first group of the first group of the first group of the first group to the area of the first group of the head of the head is preferably 10 to 80%, more preferably 20 to 80%, and more preferably 20 to 50% desirable. If the area ratio of the first group of the first group is less than 10%, the amount of the oral preparation that can be held may decrease. If the area ratio exceeds 80%, the overall elasticity of the brush part 4 becomes excessively flexible, There is a concern. If the area ratio of the first and the second group is in the range of 10 to 80%, a sufficient amount of the oral preparation is maintained in the first full-scale group, and the overall elasticity of the brush part 4 is not excessively flexible.

The area of the footprint area (total footprint area) of the head part 2 in this embodiment is the area of the area surrounded by the hypothetical line T0 connecting the outer sides of the footwear holes formed in the head part 2 at the shortest length .

The footprint area of the first overall group 30 is the area of the area enclosed by the imaginary line T1 connecting the outer sides of the foot hole 34 in which the first pattern 32 is erected with the shortest length.

The tip density obtained by dividing the number of tip ends of the first bristles (that is, the number of tip ends of the first bristles) by the foot width of the first collecting group 30 in the first collecting group 30 is 1000 to 16000 / cm 2 More preferably 2000 to 10,000 pieces / cm 2, further preferably 2000 to 8000 pieces / cm 2, and particularly preferably 5000 to 8000 pieces / cm 2. If the density of the tip of the first group of defects 30 is less than 1000 pieces / cm2, the amount of the oral preparation that can be held is reduced, the amount of the oral preparation applied to the interdental space and the cervical portion becomes insufficient, and if it exceeds 16000 pieces / The bending amount of the first mold bundle 32 is excessively limited and the cleaning effect is lowered. A sufficient amount of the oral preparation can be applied to the interdental space and the cervical portion and the amount of bending of the first hair bundle 32 is not limited excessively when the tip end density of the first group of the first hair bundle 30 is 1000 to 16000 / The cleaning effect is enhanced.

The tip end density in the first overall group 30 is adjusted by the type and thickness of the first bristles, the thickness of the bristles to be described later, and the like.

In the present invention, the tip of the bristles is a portion within 5 mm, preferably within 3 mm from the tip of the bristles.

In the first collecting group 30, the number of bristles divided by the number of bristles of the first collecting group 30 is appropriately determined according to the type of the first bristles and the desired tip density. When the first bristles are branched, the bristle density is preferably 500 to 5000 / cm 2, more preferably 700 to 2000 / cm 2.

The density of the hair of the first full-scale group 30 is adjusted by the pitch between the floss holes, the number of bristles in one first hair bundle 32, the thickness of the first bristles, and the like.

The front end density and the front end density in the first complete group 30 may be the same or different.

The tip density obtained by dividing the number of tip ends of the second bristles (that is, the number of tip ends of the second bristles) by the foot area of the second overall group 40 in the second overall group 40 is less than 1000 pieces / , More preferably 100 / cm2 to 1000 / cm2, and more preferably 250 to 600 / cm2. That is, in the present embodiment, the density of the front ends of the first collecting group 30 is larger than the density of the front ends of the second collecting group 40. If the density of the tip of the second extreme group 40 is less than 100 pieces / cm 2, there is a possibility that the amount of the oral preparation in the first extreme group 30 can be reduced. When the tip end density of the second overall group 40 is 1000 pieces / cm 2 or more, the modulus of elasticity is excessively softened and the cleaning effect may be deteriorated.

A sufficient amount of oral preparation can be held in the first collecting group (30) if the density of the tip of the second collecting group (40) is less than 100 / cm2 and 1000 / cm2, The effect is enhanced.

The planting area of the second collecting plant 40 is a value obtained by subtracting the planting area of the first collecting plant 30 from the total planting area.

The tip end density in the second overall group 40 is adjusted by the type and thickness of the second bristles, the dent density, and the like.

The number of bristles divided by the number of bristles of the second overall group 40 in the second overall group 40 is determined considering the type of the second bristles and is less than 1,000 pieces / Cm < 2 > / cm < 2 > and more preferably 250 to 600 / cm < 2 >

The density of the hair of the second overall group 40 is adjusted by the pitch of the hair-removal holes, the number of bristles in one second hair bundle 42, the thickness of the second bristles, and the like.

In the second overall group 40, the leading end density and the covering density may be the same or different.

In addition, the filling density in the second overall group (40) may be the same as or different from the filling density in the first overall group (30).

In the present embodiment, the tip portion density ratio expressed by [the tip portion density of the first total set 30] / [the tip portion density of the second total set 40] is more than 1, preferably more than 1 and less than 50, More preferably from 5 to 40, and even more preferably from 5 to 40. When the tip density ratio is less than 1, the amount of the oral preparation capable of being held may be decreased. When the ratio is more than 50, the tip end density of the second collecting group 40 is too low, The formulation is likely to leak.

When the tip density ratio is more than 1 and less than 50, a sufficient amount of oral preparation can be retained in the first collecting group 30 and the tip collecting density of the second collecting group 40 is not too low, The oral preparation kept in the mouth is hardly leaked.

The method of manufacturing the toothbrush 1 of the present embodiment can be performed by a conventionally known method. For example, a flat wire-type monaural knitting machine in which a bundle is folded in two and a plain line sandwiched therebetween is inserted into a knife- Molding method in which the lower end of the foot is press-fitted into a molten resin to be fixed, or an in-mold method in which a molten resin is injected into a mold after forming a molten mass by heating the lower end of the mold, have.

A method of using the toothbrush 1 of the present embodiment will be described.

The mouth preparation such as a dentifrice is applied to the brush part 4, and the brush part 4 is put into the oral cavity. The toothbrush 1 is reciprocated in the longitudinal direction of the head part 2. At this time, the first hair bundle 32 enters the interdental region and the cervical region, and the oral preparation is applied to the interdental region and the cervical region, and the dental plaque of the interdental region and the cervical region is scraped off. In addition, when the second full-wave group 40 having a lower tip density than the first full-wave group 30 is struck, the interdental space and the cervical portion are brushed with strong pressure.

In addition, when cleaning the occlusal surface of the molar teeth, the second collecting group (40) slides on the teeth while covering the molar teeth, and the first collecting group (30) holding the oral preparations scrape the contamination adhered to the teeth and occlusal surfaces .

While the oral cavity is being cleaned, the oral preparation is kept in the first group 30 without being immediately diffused even if diluted with saliva or the like in the oral cavity. In addition, when the second hair bundle 42 is higher than the first hair bundle 32, the oral preparation held in the first hair bundle group 30 is more effectively prevented from flowing out to the outside. Then, a sufficient amount of the oral preparation is continuously applied to the target site over a long period of time.

According to the present embodiment, since the tip end density of the first collecting group 30 is in the specific range, the oral preparation is held in the first collecting group 30.

In addition, according to the present embodiment, since the first and second collecting groups 30 and 40 are provided, the effective amount of the active ingredient (for example, isopropylmethylphenol or the like) Can be cleaned with a strong force by the second hair bundle 42 while maintaining a high concentration of the cleaning agent.

In addition, since the branch mammal is easy to enter the cervical portion and the root portion, the oral preparation held in the branch portion is easily applied to the cervical portion and the root portion.

(Second Embodiment)

A toothbrush according to a second embodiment of the present invention will be described below with reference to Figs. 5A and 5B.

The same components as those in the first embodiment are denoted by the same reference numerals and the description thereof will be omitted, and differences from the first embodiment will be mainly described.

The toothbrush 100 shown in Figs. 5A and 5B has a brush portion 104 formed on the drinking surface 20 of the head portion 2. As shown in Fig.

The brush part 104 is provided with a first collecting group 130 (sometimes referred to as a first collecting group in the front) formed between the center of the maximum width in the longitudinal direction of the drinking water surface 20 and the head end 21, A first summing group 132 (sometimes referred to as a first summing unit in the rear) 132 formed between the first summing unit 130 and the handle unit 3, a first first summing group 130 and a first rearing unit 130 And a second gathering group 140 formed to surround the first group 132.

The front first assemblage 130 is formed of a first bundle 32 that is stitched in two rows and two rows and the rear first bundle 132 is formed of a first bundle 32 are formed.

The second overall group 40 includes a second pattern 42 that is stitched from the head end 21 toward the front first collecting group 130 in three rows and one row and four rows and one row, A second pattern 42 formed by arranging one row and six rows along the edge 22 and a second pattern 42 formed by arranging one row and six rows along the side edge 24, A second hair bundle 42 arranged in two rows and one row between the first and second collecting assemblies 130 and 132 and a second hair bundle 42 extending from the rear first collecting bundle 132 toward the handle 3 And a second pattern 42 that is stitched in rows and columns and one row and one row.

In the present embodiment, the ratio of the area of the first group of the first group, which is obtained from the area of the first summing area / the area of the head area, is equal to that of the first embodiment. However, in the present embodiment, the " first summing footprint area " is the sum of the flocking area of the front first full-height flap 130 and the flocking area of the rear first full-height flap 132. [

The footprints of the front first assemblage 130 include a hypothetical line T11 connecting the outer sides of the footpath holes 34 with the first leg 32 of the first frontal assemblage 130 in the shortest length, As shown in FIG.

The footprints of the first rear wheel assembly 132 are arranged in a virtual line T12 connecting the outer ends of the front wheel rim 34 with the first legs 32 of the first rear wheel assembly 132 at the shortest length, As shown in FIG.

The total footprint area of the head portion 2 is set so that the imaginary line T10 connecting the outer sides of the foot hole 44 in which the second pattern 42 of the second overall group 140 is stitched to the shortest length ). ≪ / RTI >

The front end densities of the front first collecting group 130 are the same as the front end densities of the first collecting group 30 of the first embodiment.

The dough density of the front first aggregation group 130 is the same as the dough density of the first aggregation group 30 of the first embodiment.

The front end density in the rear first overall group 132 is the same as the front end density of the first collecting group 30 in the first embodiment.

The dough density of the rear first aggregation 132 is the same as the dough density of the first aggregation group 30 of the first embodiment.

The knitted fabric density of the second overall group (140) is the same as that of the second overall group (40) of the first embodiment. The planting area of the second overall plant (140) is a value obtained by subtracting the planting area of the first first aggregation (130) and the planting area of the first first aggregation (132) from the total planting area.

The tip end density ratio expressed by [the tip end density of the first front end group 130] / [the front end portion density of the second front end group 140] Density] / [the tip density of the second overall group 40].

The tip end density ratio represented by the tip end portion density of the rear first upper extremity group 132 / the tip end portion density of the second total upper extremity group 140 of the first embodiment Density] / [the tip density of the second overall group 40].

(Third Embodiment)

A toothbrush according to a third embodiment of the present invention will be described below with reference to Figs. 6A and 6B.

The same components as those of the first and second embodiments are denoted by the same reference numerals and the description thereof will be omitted, and differences from the first to second embodiments will be mainly described.

The toothbrush 200 shown in Figs. 6A and 6B has a brush portion 204 formed on the drinking surface 20 of the head portion 2. As shown in Fig.

The brush part 204 is formed of a first gathering group 230 and four plate-shaped elastic members (plate-like elastic members) 242 protruding outside the first gathering group 230.

The first group 230 is formed of a first pattern 32 that is stitched in two rows and seven rows from the head end 21 toward the handle portion 3.

The plate-like elastic members 242 are provided on the both sides of the head part 2 in the width direction with two first assemblies 230 sandwiched therebetween. A plate-like elastic member 242 is arranged on the side of the side edge 22 of the head part 2 in the longitudinal direction of the head part 2 and two plate-shaped elastic members 242 are provided on the side of the side edge 24 of the head part 2 Are arranged in two in the longitudinal direction of the head part 2. In this way, the plate-like elastic member 242 is protruded from the food wicking surface 20 so as to sandwich the first collecting group 330 in the width direction of the head part 2.

In the present embodiment, the ratio of the area of the first group of the first group, which is obtained from the area of the first summing area / the area of the head area, is equal to that of the first embodiment.

In the present embodiment, the " flocking area of the first group " is the area of the area surrounded by the imaginary line T21 connecting the outer sides of the flocked holes 34 in which the first pattern 32 is stitched to the shortest length .

The total area of the footwear 2 of the head portion 2 is surrounded by the hypothetical line T20 connecting the footwear holes 34 formed in the head portion 2 and the outer sides of the plate- Area of area.

The plate-like elastic member 242 is formed in a rectangular prism shape when viewed from the top, with the longitudinal direction of the head part 2 being vertical. The plate elastic member 242 is formed with two incisions 244 extending from the projecting end toward the food wick 20 and the incision 244 is formed in a wedge shape in which the width gradually decreases from the projecting end toward the wicking side Respectively. That is, the plate-like elastic member 242 is divided into three protruding end portions.

It means that the width of the incision 244 (the length of the incision 244 in the longitudinal direction of the head part 2) gradually tapers (becomes smaller) from the projecting end toward the wicking surface.

In the present embodiment, the plate-like elastic member 242 is obtained by injection molding using, for example, resin.

The resin constituting the plate-like elastic member 242 may be any material as long as it appropriately bends at the time of cleaning in the oral cavity. For example, soft resin may be used. As the soft resin, the hardness (JIS K 6253 hardness test, JIS A test condition) is preferably 5 to 100, more preferably 20 to 60. When the hardness is 5 or more, sufficient elasticity is obtained and a sufficient massage effect is obtained. When the hardness is 100 or less, the gums are not damaged and a sufficient massage effect is obtained.

Examples of soft resins include polyolefin thermoplastic elastomers, polystyrene thermoplastic elastomers, polyurethane thermoplastic elastomers, polyester thermoplastic elastomers, 1,2-polybutadiene thermoplastic elastomers, ethylene-vinyl acetate thermoplastic elastomers, Based thermoplastic elastomer, a natural rubber-based thermoplastic elastomer, a fluorinated thermoplastic elastomer, and a trans-polyisoprene-based thermoplastic elastomer. A polystyrene thermoplastic elastomer is preferred.

The length H22 of the plate-like elastic member 242 from the mold surface 20 to the projecting end of the plate-like elastic member 242 in this embodiment is the sum of the length (H1) And the material of the plate-like elastic member 242, and is preferably, for example, 5.5 to 14.5 mm, more preferably 7 to 11 mm. The length H22 of the plate elastic member 242 to the projecting end of the plate elastic member 242 is 5.5 or more so that the plate elastic member 242 contacts the gum So that a good massage effect can be obtained. The length H22 of the plate-like elastic member 242 to the projecting end of the plate-like elastic member 242 is 14.5 mm or less, the plate-like elastic member 242 has appropriate hardness and flexibility The massage effect can be further improved.

It is preferable that the height H22 of the plate elastic member 242 is equal to or higher than the parent length H1 of the first pattern 32 and is greater than [H22] - [H1] The height difference H23 indicated is preferably 0 to 2 mm, more preferably 0 to 0.5 mm. If the height difference H23 is equal to or larger than 0 mm, the oral preparation held in the first full-scale group 230 is more difficult to lose, and if the height difference H23 is less than 2 mm, the first hair bundle 32 tends to touch the teeth.

The depth D20 of the incision 244 is determined in consideration of the hardness and flexibility required of the plate-like elastic member 242 and is set to be 1/4 to 1/2 of the height H22 of the plate- .

The maximum width W3 of the incision 244 (i.e., the length between the adjacent projecting ends) is preferably 0.5 to 3.0 mm, more preferably 0.8 to 1.5 mm.

The length L1 of the plate-like elastic member 242, that is, the length in the longitudinal direction of the plate-like elastic member 242 in plan view is determined in consideration of the hardness and flexibility required for the plate-like elastic member 242, But is preferably 2 to 10 mm, more preferably 3 to 6 mm.

The width W1 of the plate-like elastic member 242, that is, the length in the transverse direction of the plate-like elastic member 242 in plan view is determined in consideration of the hardness and flexibility required for the plate- Preferably 1 to 4 mm, more preferably 1 to 2 mm.

It is preferable that the length L1 of the plate elastic member 242 is 2 to 10 mm and the width W1 is 1 to 4 mm and the length L1 is 3 to 6 mm, W1) is more preferably 1 to 2 mm.

The method of manufacturing the toothbrush 200 includes a molding step in which a handle body is formed (primary molding), a plate-like elastic member 242 is provided on the obtained handle body (secondary molding) And a step of forming a first mold bundle on the first mold bundle.

In the primary molding, a pair of primary dies provided with cavities corresponding to the shape of the handle body are used, resin (which may be referred to as primary resin) constituting the handle body is injected into the cavities, To manipulate

Subsequently, in the secondary molding, a pair of secondary dies having cavities corresponding to the shapes of the plate-like elastic members 242 are used, the handle body obtained in the primary molding is loaded in the cavity of the secondary die, (In some cases, referred to as a secondary resin) constituting the plate-like elastic member 242 and installing the plate-like elastic member 242 on the molding surface 20. [ The cavity of the secondary mold has a shape corresponding to the plate-like elastic member 242 when a space is formed between the loaded handle body and the cavity when the handle body is loaded in the cavity.

The flocking step is a step of forming a toothbrush 200 by setting a first hair bundle 32 on the head part 2. [ The first pattern 32 may be formed by a known method. For example, the first pattern 32 may be formed by a method of folding the pattern in two, inserting a flat line sandwiched therebetween, A hot-melt method in which the lower end is press-fitted into a molten resin to be fixed, or an in-mold method in which a molten resin is injected into a mold after the lower end of the mold is heated to form a molten mass.

Next, the method of using the toothbrush 200 will be described by taking as an example the case of cleaning the inside of the mouth by a scrub method or a bath method.

An oral preparation such as a dentifrice is applied to the brush part 204 to insert the brush part 204 into the oral cavity.

Reciprocates the toothbrush 200 in the longitudinal direction of the head part 2. [ At this time, the first hair bundle 32 enters the interdental region and the cervical region, and the oral preparation is applied to the interdental region and the cervical region, and the dental plaque of the interdental region and the cervical region is scratched. In addition, since the first hair bundle 32 is restricted by the plate-like elastic member 242 in the warpage in the width direction, the hair elasticity of the distal end portion is moderately hardened. Therefore, the cleaning effect of the first pattern 32 is enhanced.

Further, the plate-like elastic member 242 presses the gums with an appropriate pressure to exert a massage effect on the gums.

According to the present embodiment, since the plate-like elastic member 242 protrudes, the massage effect on the gum is improved when cleaning the oral cavity.

In addition, according to the present embodiment, the plate elastic member 242 hardens the resilient force of the distal end portion of the first female thread 32, thereby further enhancing the cleaning effect.

The toothbrush 200 of the present embodiment is particularly preferable in combination with an oral preparation containing ingredients effective for gum massaging.

(Fourth Embodiment)

A toothbrush according to a fourth embodiment of the present invention will be described below with reference to Figs. 7A and 7B.

The same components as those of the first to third embodiments are denoted by the same reference numerals and the description thereof will be omitted, and differences from the first to third embodiments will be mainly described.

The toothbrush 300 shown in Figs. 7A and 7B has a brush portion 304 formed on the drinking surface 20 of the head portion 2. As shown in Fig.

The brush portion 304 includes a first gathering group 330, four plate-like elastic members (plate-like elastic members) 342 protruding outside the first collecting group 330, and nine cylindrical elastic members (A cylindrical elastic member) 346.

The first full scale group 330 is formed of a first pattern 32 which is laid one column by one row and two columns by seven rows from the head end 21 toward the handle portion 3. [

The plate-like elastic members 342 are provided on the both sides of the head portion 2 in the width direction with two first assemblies 330 sandwiched therebetween. A plate-like elastic member 342 is arranged on the side of the side edge 22 of the head part 2 in the longitudinal direction of the head part 2, Are arranged in two in the longitudinal direction of the head part 2.

Four columnar elastic members 346 protrude from the outer side of the first extremity group 330 near the head end 21 and five columnar elastic members 346 protrude from the outside of the first crowd 330, An elastic member 346 protrudes.

Thus, the plate-like elastic member 342 and the columnar elastic member 346 protrude from the food wicking surface 20 so as to surround the first collecting group 330.

The plate-like elastic members 342 and the columnar elastic members 346 surround the first collecting group 330 surrounding the first collecting group 330 and the plate-like elastic members 342 and the columnar elastic members 346 ) Are located at regular intervals.

In the present embodiment, the ratio of the area of the first group of the first group, which is obtained from the area of the first summing area / the area of the head area, is equal to that of the first embodiment.

In the present embodiment, the " first overlapping grouping area " is an area surrounded by the imaginary line T31 connecting the outer sides of the hair-removal holes 34 in which the first hair bundle 32 is stitched to the shortest length.

The total area of the head area 2 of the head portion 2 is determined by the virtual line T30 connecting the plate-like elastic members 342 formed on the head portion 2 and the outer sides of the columnar elastic members 346 at the shortest length It is the area of the enclosed area.

The plate-like elastic member 342 has a prismatic rectangular prism shape in the longitudinal direction of the head part 2 in the longitudinal direction, and each side curve forms a transverse shape in the plan view. The projecting end face of the plate-like elastic member 342 is bulged toward the center.

The columnar elastic member 346 has a rounded tip.

The material of the plate-like elastic member 342 in this embodiment is the same as that of the plate-like elastic member 242 in the third embodiment, and the material of the columnar elastic member 346 is the same as the material of the plate- (242).

The length H32 from the kneading surface 20 to the projecting end of the plate-like elastic member 342 in this embodiment is the same as the height H32 of the plate-like elastic member 242 in the third embodiment H22), and the height of the columnar elastic members 346 is the same as the height H22 of the plate-like elastic members 242 in the third embodiment. The height H32 of the plate-like elastic member 342 and the height of the columnar elastic member 346 may be the same or different.

In addition, the elevation difference H33 indicated by [H32] - [H1] is the same as the elevation difference H23 in the third embodiment.

The length L2 of the plate-like elastic member 342 is equal to the length L1 of the plate-like elastic member 242 in the third embodiment.

The width W2 of the plate-like elastic member 342 is the same as the width W1 of the plate-like elastic member 242 in the third embodiment.

The maximum diameter R30 of the cylindrical elastic member 346 is determined in consideration of the hardness and flexibility required for the cylindrical elastic member 346 and is preferably 0.05 to 5 mm and more preferably 0.1 to 1 mm.

(Fifth Embodiment)

A toothbrush according to a fifth embodiment of the present invention will be described below with reference to Figs. 8A and 8B.

The same components as those of the first to fourth embodiments are denoted by the same reference numerals and the description thereof will be omitted. Differences from the first to fourth embodiments will be mainly described.

The toothbrush 400 shown in Figs. 8A and 8B has a brush part 404 formed on the drinking surface 20 of the head part 2. As shown in Fig.

The brush part 404 is formed of a first gathering group 330 and 39 cylindrical elastic members 346 protruding from the first gathering group 330.

In this embodiment, the adjacent columnar elastic members 346 are in contact with each other.

The columnar elastic members 346 are positioned such that the columnar elastic members 346 adjacent to the periphery of the columnar elastic members 346 are in contact with each other around the first group of multiplets 330 surrounding the first group of assemblies 330.

In the present embodiment, the ratio of the area of the first group of the first group, which is obtained from the area of the first summing area / the area of the head area, is equal to that of the first embodiment.

In the present embodiment, the " first overlapping grouping area " is an area surrounded by the imaginary line T31 connecting the outer sides of the hair-removal holes 34 in which the first hair bundle 32 is stitched to the shortest length.

The area of the footprint area of the head 2 is the area of the area enclosed by the imaginary line T40 connecting the outer sides of the columnar elastic members 346 formed on the head 2 at the shortest length.

According to the present embodiment, since the neighboring cylindrical elastic members 346 are in contact with each other, the oral preparation held in the first collecting group 330 hardly flows out.

(Other Embodiments)

The present invention is not limited to the above-described embodiments.

In the first and second embodiments, the second group of digits is formed to surround the first group of digits, but the present invention is not limited to this.

For example, in the first embodiment, at least one group selected from the group consisting of the front set, the rear set, the first lateral sum, and the second lateral sum may not be formed. As a result, the area ratio of the first full-scale group is increased.

In addition, for example, the first full-scale group may be formed so as to surround the second full-scale group.

Alternatively, for example, a first overall group may be formed near the front end of the head portion, a second overall group may be formed near the handle portion, a second overall group may be formed near the front end of the head portion, A preeminent group may be formed.

In the third embodiment, the elastic member is projected so as to sandwich the first overlapping group. However, the present invention is not limited to this, and the first overlapping group may be formed so as to sandwich the elastic member.

In the fourth and fifth embodiments, the elastic member protrudes to surround the first collecting group, but the present invention is not limited to this, and the elastic member may be surrounded by two or more first collecting groups.

In the first and second embodiments, the brush portion is formed by the first and second collecting groups, but the present invention is not limited to this, and the elastic member may also protrude.

In the third to fifth embodiments, although the brush unit is formed by the first and the elastic member, the present invention is not limited to this, and the second and third groups may be formed.

In the first and second embodiments, the leading end density in the first collecting group is larger than the leading end density in the second collecting group. However, the present invention is not limited to this, and the leading end density in the first collecting group may be larger than that of the second collecting group It may be smaller than the outstanding tip density. However, from the viewpoint of better cleaning the inside of the oral cavity, it is preferable that the tip density in the first overall group is larger than the tip density in the second total group.

In the first embodiment, the first collecting group is formed by the ten first collecting bundles. However, the present invention is not limited to this, and the first collecting group may be formed by one to nine first collecting bundles, A first full-scale group may be formed by the first or more first bundles. However, from the viewpoint of further increasing the holding amount of the oral preparation, it is preferable that the number of the first digits forming one first differential group is 4 to 15.

In the first embodiment, the first modulation is arranged in two rows and five rows to form the first modulation, but the first modulation and the columns in the present invention are not limited thereto.

In the second embodiment, one first group of patterns is formed by four first pattern groups, but the present invention is not limited to this, and the first group of patterns may be formed by one to three first pattern groups . A first full-scale group may be formed by five or more first pattern bundles.

However, from the viewpoint of further increasing the holding amount of the oral preparation, it is preferable that the number of the first digits forming one first differential group is 4 to 15.

In the second embodiment, the first modulation is arranged in two rows and two rows to form one first modulation group, but the first modulation and the column in the present invention are not limited to this.

In the second embodiment, two first groups are formed, but the present invention is not limited to this, and the number of first groups may be three or more. However, from the viewpoint of increasing the retention amount of the oral preparation and further improving the cleaning effect, the number of the first group is preferably 1 to 3, more preferably 1 to 2.

When two or more first greatest groups are formed, the first set of modulations forming each first greatest group may be the same or different.

In the first to fifth embodiments, the first modulation is cylindrical, but the present invention is not limited thereto, and the first modulation may be a triangular prism, a quadrangular prism, or a prismatic prism.

In the case of a shape other than the cylindrical shape, the thickness of the model is the diameter of the circumscribed circle of the transverse plane of the model.

Although the second and third embodiments have cylindrical shapes, the present invention is not limited thereto. The second and third feet may have a triangular prism shape, a quadrangular prism shape, or a prismatic prism shape.

In the case of a shape other than the cylindrical shape, the thickness of the model is the diameter of the circumscribed circle of the transverse plane of the model.

In the third and fourth embodiments, the plate-like elastic members are protruded by two on both sides in the width direction of the head portion, but the present invention is not limited to this. The number of the plate-like elastic members on one side in the width direction of the head portion may be one, There may be three or more. The number of the plate-like elastic members on both sides in the width direction may be different from each other.

As another aspect of the toothbrush of the present invention,

1. A toothbrush comprising: a handle portion having a long shape; a head portion extending from the handle portion; and a brush portion formed on a peripheral surface of the head portion,

Wherein the brush unit is formed of a first and a second group,

Wherein the second group of digits is formed so as to surround the first group of digits,

The first collecting group is composed of the first bristles,

The second group of balances is composed of the second bristles,

Wherein the first bristles are feathered bristles,

Wherein the second bristles are tapered or straight,

The second group of the first group is formed of a front group, a first lateral group, a second lateral group, and a rear group,

Wherein the forward convergence group is formed from the head of the head unit toward the first group of the first and second assemblies arranged in 2 rows by 1 row, 3 columns by 1 row, and 4 columns by 1 row,

Wherein the rearward assembling group is formed by a second gathering which is arranged in a row of four rows and one row and three rows and one row toward the handle portion from the first group of bumps,

Wherein the first lateral gathering group is formed by a second gathering arranged in one row by six rows along a side edge of the head portion,

And the second lateral gathering group is formed by a second gathering arranged in a row of six rows along the side edge of the head portion,

The thickness of the first demigod is 1 to 3 mm,

The thickness of the second demodulator is 1 to 3 mm,

Wherein a ratio of an area of the first collecting group to a total area of the first collecting group / a total area of the head of the head x 100 is 10 to 80%, and the first collecting area of the first collecting group has a first gathering area Wherein the area of the footing area of the head part is the area of the area surrounded by the imaginary line connecting the outer sides of the footwear holes formed in the head part with the shortest length,

Wherein a tip end density of the tip ends of the first bristles divided by the footprints of the first and second groups is in the range of 1000 to 16000 /

Wherein a tip end density of the tip end portions of the second bristles divided by the foot width of the group of the second collecting feet is less than 100 / cm 2 and less than 1000 / cm 2 in the second collecting group, A value obtained by subtracting the footprint area of the first group of the first group from the footprint area of the head part,

Wherein the tip density of the first group of the first groups is divided by the tip density of the second group of the first groups,

The length of the center of the first pattern adjacent to the longitudinal direction of the head portion in the first pattern is 2.0 mm to 4.0 mm,

The length of the center of the first pattern adjacent to the width direction of the head portion in the first pattern is 1.5 mm to 4.0 mm,

The length of the center of the second gathered portion adjacent to the longitudinal direction of the head portion in the second gathered portion is 1.5 mm to 4.0 mm,

The length between the centers of the second cluster adjacent to the width direction of the head portion in the second cluster is 1.5 mm to 4.0 mm,

Wherein the parent hair length of the second allograft is longer than the parent hair length of the first full-

And a difference between a parent length of the second demodulator and a parent length of the first demodulation is 0.5 to 2 mm.

As another aspect of the toothbrush of the present invention,

1. A toothbrush comprising: a handle portion having a long shape; a head portion extending from the handle portion; and a brush portion formed on a peripheral surface of the head portion,

Wherein the brush unit is formed of a first and a second group,

The first collecting group is composed of the first bristles,

The second group of balances is composed of the second bristles,

The first bristles are feathered bristles,

Wherein the second bristles are tapered or straight,

Wherein the brush portion includes a front first mass group formed between a center of a maximum width in a longitudinal direction of the mold core and a front end of the head portion, a rear first mass group formed between the front first mass balancer and the handle portion, And the second plurality of groups formed so as to surround the first and the second groups,

The first first full-scale group is formed by a first major foot that is stitched in two rows and two rows,

The rear first collecting unit is formed of a first gathering unit arranged in two rows and two rows,

The second group of patterns includes a second pattern formed by arranging three rows and one row and four rows and one row from the front end of the head toward the front first aggregation group and one row and six columns along the side edge of the head portion, A second pattern formed by rowing in a row × 6 rows along the side edge, and a second pattern formed by arranging a row of two rows × 1 row between the first first group of the first and the first group of the first rows And a second gathering unit arranged in a row of four rows and one row and three rows of one row toward the handle portion from the rear first gathering group,

The thickness of the first demigod is 1 to 3 mm,

The thickness of the second demodulator is 1 to 3 mm,

Wherein a ratio of an area of the first collecting group to a total area of the first collecting group / a total area of the head of the head x 100 is 10 to 80%, and the first collecting area of the first collecting group has a first gathering area Wherein the area of the footing area of the head part is the area of the area surrounded by the imaginary line connecting the outer sides of the footwear holes formed in the head part with the shortest length,

Wherein a tip end density of the tip ends of the first bristles divided by the footprints of the first and second groups is in the range of 1000 to 16000 /

Wherein a tip end density of the tip end portions of the second bristles divided by the foot width of the group of the second collecting feet is less than 100 / cm 2 and less than 1000 / cm 2 in the second collecting group, A value obtained by subtracting the footprint area of the first group of the first group from the footprint area of the head part,

Wherein the tip density of the first group of the first groups is divided by the tip density of the second group of the first groups,

The length of the center of the first gathered portion adjacent to the longitudinal direction of the head portion in the first pattern is 2.0 mm to 4.0 mm,

The length of the center of the first gathering portion adjacent to the width direction of the head portion in the first pattern is 1.5 mm to 4.0 mm,

The length of the center of the second gathered portion adjacent to the longitudinal direction of the head portion in the second gathered portion is 1.5 mm to 4.0 mm,

The center between the centers of the second tufts adjacent to the width direction of the head portion in the second tuft is 1.5 mm to 4.0 mm,

Wherein the parent hair length of the second allograft is longer than the parent hair length of the first full-

And a difference between a parent length of the second demodulator and a parent length of the first demodulation is 0.5 to 2 mm.

As another aspect of the toothbrush of the present invention,

1. A toothbrush comprising: a handle portion having a long shape; a head portion extending from the handle portion; and a brush portion formed on a peripheral surface of the head portion,

Wherein the brush portion is formed of a first gathering group and four plate-like elastic members protruding outside the first gathering group,

The first collecting group is composed of the first bristles,

Wherein the first bristles are feathered bristles,

Wherein the first collecting unit is formed of a first gathering unit arranged in a row of two rows and seven rows from the head end of the head toward the handle unit,

The thickness of the first demigod is 1 to 3 mm,

Wherein a ratio of an area of the first collecting group to a total area of the first collecting group / a total area of the head of the head x 100 is 10 to 80%, and the first collecting area of the first collecting group has a first gathering area Wherein the area of the footing area of the head part is the area of the area surrounded by the imaginary line connecting the outer sides of the footwear holes formed in the head part with the shortest length,

Wherein a tip end density of the tip ends of the first bristles divided by the footprints of the first and second groups is in the range of 1000 to 16000 /

The length of the center of the first gathered portion adjacent to the longitudinal direction of the head portion in the first pattern is 2.0 mm to 4.0 mm,

The length of the center of the first gathering portion adjacent to the width direction of the head portion in the first pattern is 1.5 mm to 4.0 mm,

Wherein the plate-like elastic members are provided on the two sides of the head portion on both sides in the width direction,

The two plate-like elastic members protrude in the longitudinal direction of the head portion on one side edge side of the head portion,

The two plate-like elastic members protrude in the longitudinal direction of the head portion on the other side edge side of the head portion,

Wherein the plate-like elastic member is formed in a rectangular prism shape when viewed from the top, the longitudinal direction of the head portion being a vertical plane,

The plate-like elastic member has three projecting ends,

The plate-like elastic member is provided with two incisions extending from the projecting end of the plate-like elastic member toward the wedge-shaped surface,

Wherein the incision is of a wedge shape in which the width gradually decreases from the projecting end toward the wedge-

Wherein the depth of the incision is 1/4 to 1/2 of the height of the plate-like elastic member,

The plate-like elastic member is formed of a polystyrene thermoplastic elastomer having a hardness of 5 to 100 according to JIS A under the test conditions JIS K 6253 hardness test,

The length from the wedge-shaped surface of the plate-like elastic member to the projecting end of the plate-like elastic member is 5.5 to 14.5 mm,

Wherein the plate-like elastic member has a length in the longitudinal direction of 2 to 10 mm at the time of planarization,

Wherein the height of the plate-shaped elastic member is equal to or longer than the first length of the first lower leg,

It is preferable that the difference between the height of the plate-like elastic member and the length of the first aggregate is 0 to 2 mm.

As another aspect of the toothbrush of the present invention,

1. A toothbrush comprising: a handle portion having a long shape; a head portion extending from the handle portion; and a brush portion formed on a peripheral surface of the head portion,

Wherein the brush part is formed of a first gathering group, four plate-like elastic members and nine columnar elastic members protruding outside the first gathering group,

The first collecting group is composed of the first bristles,

Wherein the first bristles are feathered bristles,

Wherein the first collecting unit is formed of a first gathering unit arranged in a row of 1 column and 1 row and 7 rows toward the handle unit from the tip of the head unit,

The thickness of the first demigod is 1 to 3 mm,

Wherein a ratio of an area of the first collecting group to a total area of the first collecting group / a total area of the head of the head x 100 is 10 to 80%, and the first collecting area of the first collecting group has a first gathering area Wherein the area of the footing area of the head part is the area of the area surrounded by the imaginary line connecting the outer sides of the footwear holes formed in the head part with the shortest length,

Wherein a tip end density of the tip ends of the first bristles divided by the footprints of the first and second groups is in the range of 1000 to 16000 /

The length of the center of the first gathered portion adjacent to the longitudinal direction of the head portion in the first pattern is 2.0 mm to 4.0 mm,

The length of the center of the first gathering portion adjacent to the width direction of the head portion in the first pattern is 1.5 mm to 4.0 mm,

Wherein the plate elastic member and the columnar elastic member are continuously protruded around the first major axis group on the periphery thereof,

Wherein the plate-shaped elastic members are formed on the both sides in the width direction of the head portion by two sandwiching the first group of the above-

The two plate-like elastic members are arranged in the longitudinal direction of the head part on one side edge side of the head part,

The two plate-like elastic members are arranged in the longitudinal direction of the head portion on the other side edge side of the head portion,

Four columnar elastic members protruding from the outer side of the first collecting group and near the tip of the head portion,

Five columnar elastic members protruding from the outside of the first group of the first group and adjacent to the handle portion,

Wherein the plate-like elastic member is a prismatic prismatic shape in plan view, the longitudinal direction of the head part being a vertical plane, each curved line forming a horizontal plane shape,

The projecting end surface of the plate-like elastic member bulges toward the center,

The distal end of the columnar elastic member is rounded,

The plate-like elastic member and the columnar elastic member are formed of a polystyrene-based thermoplastic elastomer having a hardness of 5 to 100 according to the test conditions JIS A of JIS K 6253 hardness test,

The length from the wedge-shaped surface of the plate-like elastic member to the projecting end of the plate-like elastic member is 5.5 to 14.5 mm,

Wherein the plate-like elastic member has a length in the longitudinal direction of 2 to 10 mm at the time of planarization,

Wherein the height of the plate-shaped elastic member is equal to or longer than the first length of the first lower leg,

Wherein a difference between a height of the plate-like elastic member and a total length of the first lower leg is 0 to 2 mm,

The maximum diameter of the cylindrical elastic member is preferably 0.05 to 5 mm.

As another aspect of the toothbrush of the present invention,

1. A toothbrush comprising: a handle portion having a long shape; a head portion extending from the handle portion; and a brush portion formed on a peripheral surface of the head portion,

Wherein the brush portion is formed of a first complete group and 39 cylindrical elastic members protruding from the first substantial group,

The adjacent columnar elastic members are in contact with each other,

The first collecting group is composed of the first bristles,

Wherein the first bristles are feathered bristles,

Wherein the first collecting unit is formed of a first gathering unit arranged in a row of 1 column and 1 row and 7 rows toward the handle unit from the tip of the head unit,

The thickness of the first demigod is 1 to 3 mm,

Wherein a ratio of an area of the first collecting group to a total area of the first collecting group / a total area of the head of the head x 100 is 10 to 80%, and the first collecting area of the first collecting group has a first gathering area Wherein the area of the footing area of the head part is the area of the area surrounded by the imaginary line connecting the outer sides of the footwear holes formed in the head part with the shortest length,

Wherein a tip end density of the tip ends of the first bristles divided by the footprints of the first and second groups is in the range of 1000 to 16000 /

The length of the center of the first gathered portion adjacent to the longitudinal direction of the head portion in the first pattern is 2.0 mm to 4.0 mm,

The length of the center of the first gathering portion adjacent to the width direction of the head portion in the first pattern is 1.5 mm to 4.0 mm,

The distal end of the columnar elastic member is rounded,

The cylindrical elastic member is formed of a polystyrene thermoplastic elastomer having a hardness of 5 to 100 according to the test conditions JIS A of JIS K 6253 hardness test,

The maximum diameter of the cylindrical elastic member is preferably 0.05 to 5 mm.

Example

Hereinafter, the present invention will be described in detail by way of examples, but the present invention is not limited by the following description.

(Materials used)

Feathered bristles: cut with a cutter 1-5 mm at the tip of Tynex 0900HA (Du Pont Kabushiki Kaisha). Number of branches = 5 ~ 15. The cross section of the trunk is circular.

Tapered branch pattern: made of PBT. The same branching mode as the branch mode 80 in Fig. 3 (branch mode shown in Figs. 1 and 2 of Japanese Patent No. 3547672).

Tapered Mo: made of PBT. The cross section is circular.

Straight Mo: Made of polyamide. The cross section is circular.

(Assessment Methods)

≪

1 g of a skirt containing isopropylmethylphenol (IPMP) was placed on the flocked portion, the flocked portion on which the skirt was placed was brought into close contact with the plastic plate, 2 g of water was added to the flocked portion, and the plastic plate was brushed for 3 minutes.

After toothbrushing, the remaining dentifrice was extracted from the toothbrush, and the amount of IPMP was determined by HPLC under the following measurement conditions to determine the amount of IPMP remaining (쨉 g), and the IPMP remaining ratio was obtained by the following formula.

IPMP remaining ratio (mass%) = (IPMP residual amount) / (IPMP amount included in the skimming agent before brushing) 占 100

«HPLC measurement conditions»

Detector: Ultraviolet absorption spectrophotometer (UV-2075 Plus, manufactured by JASCO Corporation).

Column: Mightysil RP-18 GP 250-4.6 (manufactured by KANTO KAGAKU).

Mobile phase: methanol / water / phosphoric acid solution.

(Examples 1 to 10, Comparative Example 1)

A toothbrush was attached to a handle made of polypropylene according to the specifications of Tables 1 to 3 to obtain toothbrushes of the respective examples. The arrangement of the collecting feet (i.e., the filling pattern) in the toothbrush of each example is the same as the arrangement of the collecting feet in the table.

In the table, the filled circles " & cir & " in the " arrangement of the mods " represent the first mold bundle and the unfilled circles " O "

In the table, the pitch of the first demigod represents the distance between the first demigods (i.e., the center distance of the first demigod), and the pitch of the second demigod represents the distance between the second demigods Center distance).

The resulting toothbrush was evaluated for retention of preparation, and the results are shown in the table.

As shown in Tables 1 to 3, in Examples 1 to 10 to which the present invention was applied, the IPMP residual ratio of the formulation was not less than 15% by mass.

On the other hand, Comparative Example 1, which does not have a region with a tip density of 1000 to 16000 / cm 2, had a retention rate of the formulation of 12 mass%.

According to the present invention, it is possible to provide a toothbrush capable of applying a sufficient amount of oral preparation to the interdental region and the cervical region.

1, 100, 200, 300, 400 toothbrushes
2 head portion
20 meals
30, 130, 132, 230, 330,
32 First Modulus
40, 140 Second overall
42 The second group
242, 342 plate-like elastic member
346 Cylindrical elastic member

Claims (5)

Wherein a first set of crowns having a number of bristle ends of 1000 to 16000 teeth / cm < 2 > is formed in an area of 10 to 80% of the area of the bristles of the head. The method according to claim 1,
And a second group of crowns having a number of bristle ends of less than 1000 pieces / cm2 is formed on the outside of the first group of crowns in the flap area of the head part. 3. The method of claim 2,
And the second collecting group is formed so as to surround the first collecting group. The method according to claim 1,
Wherein a resilient member protrudes outside the first gathering group in the flap area of the head part. 5. The method of claim 4,
Wherein the elastic member is protruded so as to surround the first collecting group.

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