CN103179876A

CN103179876A - Toothbrush

Info

Publication number: CN103179876A
Application number: CN2011800516842A
Authority: CN
Inventors: 山本缘; 阿部徹弥; 小林海之
Original assignee: Lion Corp
Current assignee: Lion Corp
Priority date: 2010-10-29
Filing date: 2011-10-25
Publication date: 2013-06-26
Anticipated expiration: 2031-10-25
Also published as: TW201223479A; JP5909192B2; TWI548364B; CN103179876B; WO2012057157A1; KR101886460B1; JPWO2012057157A1; MY166679A; KR20140009167A

Abstract

The invention pertains to a toothbrush provided with a head wherein bristle bundles in which multiple bristles are bundled are implanted and a handle extending from the head, which is characterized in that only a region that is 25-75% of the length of the implanted region from the base towards the tip of the head is provided with a separated bristle bundle implantation area in which bristle bundles that are adjacent to each other across the central line of the implanted region from the base to the tip of the head are disposed so as to be separated by a distance that is 15-70% of the length in the direction orthogonal to said central line of the implanted region, and the region where the bristle bundles are present in said separated bristle bundle implantation area has an opening at the base end of the head. The invention provides a toothbrush that is not only able to establish both the ability of the bristle tips to approach the dental cervix and the ability to remove plaque but also has a superior feel when used.

Description

Toothbrush

Technical field

The present invention relates to a kind of improvement of toothbrush.

The application is based on and advocated priority in the 2010-244013 patent that Japan applies on October 29th, 2010, quotes its content here.

Background technology

Known to prevention of periodontal disease, very important to the cleaning of neck section.In order to improve toothbrush to the cleaning of neck section, require that bristle tips is higher to the entering of neck section, bristle tips that enter neck section is higher to the brushing of tartar.

As the higher toothbrush of entering to neck section bristle tips, known have a kind of use with the bristle tips sharpening the toothbrush of bristle.In addition, known have a kind of making to plant to pieces the toothbrush that the whole physical separation that enlarges, makes pieces of the spacing of planting pore of hair increases.

Yet, only enlarge when planting the spacing of pore, because the elasticity of pieces reduces, so the brushing that enters the tartar of neck section has the tendency of decline, and the density step-down of pieces may damage the use sense as toothbrush significantly.

As patent documentation 1～4 record, toothbrush is planted hair according to purpose with various patterns.

That is, in patent documentation 1, motion has a kind of toothbrush, and it is so that the top of pieces arrives end face and the side of molar is purpose, on the brushhead top and the central authorities of toothbrush width be formed with notch, pieces is planted hair and is the roughly U font of opening for tip side.

A kind of toothbrush of motion in patent documentation 2, its with improve bristle tips to the entering of the slot between tooth and tooth as purpose, be provided with a plurality of nothings in the central authorities of planting the territory, hair-fields and plant a mao section.

A kind of toothbrush of motion in patent documentation 3, it, is provided with 1 nothing in the central authorities of planting the territory, hair-fields and plants a mao section as purpose with situation in the oral cavity that adapts to each people.

A kind of toothbrush of motion in patent documentation 4, as purpose, pieces is planted hair and is the V word shape of opening for the base end side of planting the territory, hair-fields with the brushing intraoral zone that there is no self purification for it.

But, the toothbrush of record in patent documentation 1 and 4, its use sense when the flank of tooth cleans is insufficient.

The toothbrush of record in patent documentation 2 and 3, the bristle tips of its pieces is insufficient to the entering of neck section.

The prior art document

Patent documentation 1: Japan opens flat 7-44999 communique in fact

Patent documentation 2: Japanese kokai publication hei 7-255529 communique

Patent documentation 3: TOHKEMY 2003-289944 communique

Patent documentation 4: No. 3142558 communique of Japanese Utility Model login

As above-mentioned, so far, there is no a kind of bristle tips that can make to the entering of neck section with to the brushing of tartar and deposit and use the good toothbrush of sense.

Summary of the invention

Therefore, the present invention In view of the foregoing does, and its purpose is to provide a kind of toothbrush, and this toothbrush can make bristle tips to the entering of neck section with to the brushing of tartar and deposit and use sense good.

Solve the means of problem

The present invention has following technical scheme.

the 1st technical scheme of the present invention is, comprise: planting hair has the brushhead of many bristles being pricked the pieces of Shu Ercheng, with the handle portion that arranges from described brushhead extension, only from the cardinal extremity of described brushhead to the top, plant 25～75% the region division pieces interval of the length in territory, hair-fields and plant a mao section, plant a mao section at described pieces interval, across the center line of planting the territory, hair-fields from the cardinal extremity of described brushhead to the top and adjacent pieces be each other with described plant length on the territory, hair-fields and direction described vertical and intersectant centerline 15～70% apart from arranged spaced, the pieces existing zone of mao section is planted to the base end side opening of described brushhead in described pieces interval.

The 2nd technical scheme of the present invention is in the toothbrush of described the 1st technical scheme, and described pieces interval is planted mao section and had the bristle that diminishes gradually to the bristle tips diameter.

The 3rd technical scheme of the present invention be the described the 1st or the toothbrush of the 2nd technical scheme in, described pieces interval is planted mao section and is comprised the polyester bristle with multilayer core structure, and this multilayer core structure comprises core and is arranged on the sheath of one deck at least section in the outside of described core.

The 4th technical scheme of the present invention be the described the 1st or the toothbrush of the 2nd technical scheme in, described pieces interval is planted mao section and is had the bristle that the mixture by a plurality of polyester consists of.

The 5th technical scheme of the present invention is in the toothbrush of the technical scheme of any in the described the 1st～the 4th, and planting hair, part or all the diameter of planting pore of pieces is arranged is the scope of 1.0～1.3mm.

The invention effect

Toothbrush of the present invention can make bristle tips to the entering of neck section with to the brushing of tartar and deposit and use sense good.

Description of drawings

Fig. 1 represents the side view of an embodiment of toothbrush of the present invention.

The top view of planting the territory, hair-fields of the toothbrush of Fig. 2 presentation graphs 1 expression.

Fig. 3 A is the schematic diagram that the effect of brushing teeth to the toothbrush in the past that there is no buffer part describes.

Fig. 3 B is formed with the schematic diagram that the effect of brushing teeth of the toothbrush of buffer part describes in an embodiment to the application.

Symbol description

1 toothbrush

10 brushhead

20 handle portion

11 pieces

12 plant the territory, hair-fields

A mao section is planted at 12a pieces interval

12b plants the front portion a mao section

The 12c buffer part

13 plant pore

The specific embodiment

An embodiment to toothbrush of the present invention describes.

Fig. 1 represents the side view of the toothbrush of present embodiment.The toothbrush 1 of present embodiment has: plant the handle portion 20 that hair has the brushhead 10 of pieces 11 and is extended the strip that is arranged on brushhead 10.

In toothbrush 1, brushhead 10 and handle portion 20 are one-body molded as a whole is strip, for example resin can be obtained by ejection formation as material.

Described resin can be considered the decisions such as rigidity that toothbrush 1 requires, mechanical property.For example, be in the high hardness resin of 500～3000MPa scope by using crooked elastic rate (JIS K7203), can access the mechanical property that toothbrush 1 needs.As such high hardness resin, enumerated such as polypropylene (PP), PET (PET), polycaprolactam (PCT), polystyrene (PS), acrylonitrile-butadiene-styrene copolymer (ABS), cellulose propionate (CP), polyarylate, Merlon and acrylonitrile-styrene (AS)---etc.Can use in these a kind or multiple.

In addition, in handle portion 20, in order to improve controlling property, can be also such as partly or integrally covering the soft resin such as elastomer.

As shown in Figure 2, brushhead 10 plant territory, hair-fields 12, tie up pieces 11 that a plurality of bristles form and planted and plant pore 13 in lattice arrangement.

At this, planting territory, hair-fields 12 is the zones that are surrounded as by connecting the outermost resulting imaginary line A of outermost portion that respectively plants the peritreme of pore 13.This imaginary line A consists of adjacent tangent line of planting between pore 13.

Planting territory, hair-fields 12 has: the pieces interval that is configured from the base end side of brushhead 10 to tip side is planted mao 12a of section and is configured to plant mao 12a of section than pieces interval and plants mao 12b of section near the front portion of tip side.

At this, the pieces interval plant mao 12a of section be from across the cardinal extremity of brushhead 10 to the center line B that plants territory, hair-fields 12 on top and adjacent pieces 11 is spaced apart the part (among Fig. 2, express across the adjacent pieces 11 of center line B be configured to each other with the example of length L 3 across the interval) of configuration each other.Namely, the pieces interval is planted mao 12a of section and is referred to, the top of following buffer part 12c on the direction from cardinal extremity to the top of brushhead 10, when the line that will intersect vertically with the center line B that plants territory, hair-fields 12 during as imaginary line C, the zone of the base end side of the brushhead 10 that lower layer line C and imaginary line A surround.

In mao 12a of section is planted at such pieces interval, be formed with below the part 12c(that does not plant mao mao's bundle, sometimes also referred to as " buffer part 12c " near planting the center line B in territory, hair-fields 12).Therefore, in planting territory, hair-fields 12, pieces 11 existing zone is to the base end side opening, from directly over the shape seen for example be roughly U font.

In addition, the zone that mao 12b of section refers to the tip side of the brushhead 10 that imaginary line C and imaginary line A surround is planted in the front portion.

At this, the cardinal extremity of brushhead 10 refers to be positioned at the outermost portion of planting pore 13 of handle portion 20 sides in brushhead 10.

The buffer part 12c of present embodiment be take from the cardinal extremity of brushhead 10 towards the direction on top rectangular-shaped as length direction.The length direction of rectangular-shaped buffer part 12c be from the cardinal extremity of brushhead 10 when the direction on top, can guarantee fully that pieces 11 enters neck section.

Described buffer part 12c is positioned at the central authorities of the width of planting territory, hair-fields 12.In the situation that buffer part 12c is positioned at the side side of planting territory, hair-fields 12, can't bring into play the bristle tips of pieces 11 to the entering of neck section.

The pieces interval plant mao 12a of section the length L 1 of cardinal extremity on the direction on top from brushhead 10 be from the cardinal extremity of brushhead 10 towards 25～75% of the length L of planting territory, hair-fields 12 2 of the direction on top, be preferably 30～70%, more preferably 50～60%.Specifically, described L1 be from the cardinal extremity of brushhead 10 towards the direction on top, plant the base end side of brushhead 10 in territory, hair-fields 12 and the distance between the anterior base end side of planting pore 13 of planting mao base end side of the 12b of section.In addition, specifically, described L2 be from the cardinal extremity of brushhead 10 towards the direction on top, plant the distance between the top side of planting pore 13 of the base end side of brushhead 10 in territory, hair-fields 12 and anterior top side of planting mao 12b of section.

During the not enough described lower limit of described L1, the pieces interval is planted mao bristle tips of the pieces of the 12a of section 11 and is descended to the entering of neck section.

Described L1 is the length of cardinal extremity on the direction on top from brushhead 10 of buffer part 12c namely.

Therefore, mean that when L1 surpasses described higher limit, buffer part 12c also is formed on the tip side of planting territory, hair-fields 12.Usually, pieces 11 to tip side applies stronger pressure when cleaning molar or the flank of tooth in order to make, when the tip side formation of planting territory, hair-fields 12 does not have the buffer part 12c of pieces 11, the sparse sense of bristle that produces pieces 11 deficiencies during to molar or flank of tooth cleaning, infringement is used and is felt.

Plant in mao 12a of section at the pieces interval, and pieces 11 each other the standoff distance L3 adjacent across the center line B be, and plant 15～70% of length L 4 on the direction that the center line B in territory, hair-fields 12 intersects vertically, is preferably 20～50%, more is preferably 25～30%.Specifically, described L3 plants the distance between pore 13 the most inboard of planting of mao 12a of section across the center line B of planting territory, hair-fields 12 adjacent pieces interval.In addition, specifically, described L4 is in the direction vertical with center line B, the distance between the outermost of planting pore 13 of a side's who plants territory, hair-fields 12 side side and the outermost of planting pore 13 in the opposing party's side side.

During the not enough described lower limit of described L3, bristle tips descends to the entering of neck section, when described L3 surpasses described lower limit, and the brushing decline of tartar.

The size that is provided with the brushhead 10 of planting territory, hair-fields 12 can be considered to decide in intraoral operability etc., and for example width is made 10～15mm, and thickness is made 4～8mm.

As the bristle that consists of pieces 11, can enumerate the bristle (taper hair) that reduces gradually to its diameter of bristle tips, other parts except whole round portion of bristle form the roughly the same bristle of external diameter (broad wool) etc.In mao 12a of section was planted at the pieces interval, because the entering of bristle tips to neck section uprises, at least a portion of more effectively prevention of periodontal disease, thereby bristle was preferably the taper hair, and more preferably bristle is all the taper hair.

As the taper hair, for example can enumerate, two ends be processed into taper the taper hair, only have an end be processed into taper the taper hair, be formed with the taper hair of a plurality of sharp-pointed sections etc. on 1 hair.

In addition, bristle can be also to mix taper hair and broad wool.For example, also the pieces interval can be planted mao bristle of the 12a of section and do tapered hair, mao bristle of the 12b of section be planted in the front portion make broad wool.In addition, in mao 12a of section is planted at the pieces interval, also can mix taper hair and broad wool.

The material of bristle is for example can use, the polyamide such as 6-12 nylon, 6-10 nylon; The polyester such as PET, polybutylene terephthalate (PBT) (PBT), PTT (PTT), PEN (PEN), PBN (PBN); The polyolefin such as PP; And the synthetic resin material of the elastomer such as polyolefin elastomer, ethene based elastomers etc.

Can select a plurality of being used in combination in these resin materials, wherein, from the viewpoint that can easily strengthen elasticity, make the brushing of tartar become larger, the mixture of preferred a plurality of polyester, the mixture of preferred 2～3 kinds of polyester.

As the mixture of a plurality of polyester, the mixture of the PET that for example preferably lists and polybutylene terephthalate (PBT) (PBT).In addition, bristle also is preferably the polyester bristle of the multiple cored structure of the sheath section more than at least 1 layer with the outside that comprises core and be arranged on described core.When having multiple cored structure, because core and sheath section can use different polyester, so it is easy that the adjustment of mechanical performance becomes.Therefore, can easily obtain strong, higher to the brushing of the tartar bristle of elasticity.As the combination of the different polyester on the bristle that can be used in described core and sheath section, for example preferred polybutylene terephthalate (PBT) (PBT) and PET.

The shape of cross section of bristle is preferably circle, but is not necessarily to be defined in circle, can be shape arbitrarily according to the purpose purposes of toothbrush 1.For example, can be that ellipse, polygon (for example, can be enumerated triangle, quadrangle, pentagon, hexagon etc.), the abnormity (for example, can enumerate star, cloverleaf pattern, bunge bedstraw herb shape etc.) etc. shape.

Cross section is in the situation of circle, from making the elasticity grow, making the high viewpoint of brushing effect change to tartar, more than the thickness of bristle (namely, maximum gauge) is preferably 6mil, below 10mil.

But, as bristle, use under the bristle with multiple cored structure or the situation that is made the elasticity enhancing by the bristle that polyester mixture consists of, even the not enough 6mil of the thickness of bristle also can access higher brushing effect.

In addition, from using the considerations such as sense, sweeping sense, cleaning effect, durability, also can at random be used in combination by the bristle that thickness is different.

The staple length of bristle is preferably, planting hair side as 8mm～13mm, be 6mm～9mm from planting of brushhead 10 hair side when children use from brushhead 10 when the adult uses.The length of bristle can be all identical, can be also not identical.As the not identical pieces of the length of bristle, enumerated a kind of like this pieces: the length of each bristle is chosen to make the central uplift of pieces.

In addition, not needing to make whole bristles is bristle of the same race.For example, planted hair and planted mao pieces of the 12a of section 11 at the pieces interval and planted hair that forwardly to plant mao pieces of the 12b of section 11 can be also not identical.The main effect of planting mao pieces of the 12a of section 11 due to the pieces interval is tartar of removing neck section, and the main effect that mao pieces of the 12b of section 11 is planted in the front portion is the part beyond cleaning neck section, thereby the preferred bristle that adapts with effect that uses.

As the fur planting method of pieces 11, can be suitable for flat wire and throw the well-known methods such as method, hot fusing method into.

Throwing in method at flat wire, is two by many bristles are pricked the Shu Houyi folding, and clamping is called as to throw into after the anti-falling piece of flat wire and plants pore between it, is respectively planting pore 13 thereby pieces 11 is planted hair.

Flat wire by planting pore 13 central part and squeeze into to be arranged on and plant in pore 13 across planting pore 13 ground.As the material of flat wire, such as enumerating the metals such as brass, stainless steel, can also enumerate other rigid plastics, biodegradable plastic etc.

Although the length of flat wire, width, thickness can corresponding pieces 11 or planted pore 13 and at random adjust, usually, the diameter that the Length Ratio of flat wire is planted pore 13 is large, and the width of flat wire is less than the degree of depth of planting pore 13.In addition, plant in pore 13 and reduce the space by regulating the thickness of flat wire, pieces 11 can being fixed on reliably.In addition, deviate from from planting pore 13 in order to prevent flat wire, the length of the part of preferably exposing from the both sides of planting pore 13 adds up to 0.3～0.6mm.

The shape of planting pore 13 that pieces 11 is planted hair is not particularly limited, and for example can enumerate, and is circular, oval, tetragonal etc.

The aperture that part or all the diameter so long as the thickness of pieces 11 can be made of planting pore 13 makes its bristle tips can enter neck section gets final product, and is not subjected to not restriction, is preferably 1.0～1.3mm.

Plant the diameter of pore 13 when 1.0mm is above, even if the hair of planting of throwing method into by flat wire also is easy to pitch of holes is done narrow, be difficult to feel the sparse sense of bristle.On the one hand, as long as below 1.3mm, just making to the entering of neck section, the diameter of planting pore 13 becomes higher.In addition, when the diameter of planting pore 13 diminished, the free degree of planting the pore configuration improved.

Especially, the pieces interval diameter of planting pore 13 of planting mao 12a of section is preferably 1.0～1.3mm.Mao pieces of the 12a of section 11 is planted with entering as main purpose to neck section in the pieces interval.Therefore, be 1.0～1.3mm by making the pieces interval plant the upper formed diameter of planting pore 13 of mao 12a of section, thereby can especially bring into play effect preferably in the entering of neck section.

The spacing of planting pore 13 for the part beyond the buffer part 12c that plants territory, hair-fields 13 is not particularly limited.Wish to suppress preferably to do the spacing of planting pore 13 of the part beyond the buffer part 12c that plants territory, hair-fields 13 narrow in the situation of the sparse sense of bristle.

As shown in Figure 3A, in the situation that the use toothbrush that does not form buffer part 12c 100 use rubbing manipulations are in the past brushed teeth, when pieces 11 was pressed into flank of tooth C, pieces 11 supported each other.Therefore, pieces 11 is difficult to deflection, and bristle tips reduces to the entering of neck section.

But, as shown in Fig. 3 B, when using the toothbrush 1 use rubbing manipulation of the present embodiment be formed with the buffer part 12c that there is no pieces to brush teeth, can be suppressed at mao pieces of the 12a of section 11 situation that pieces 11 supports each other when being pressed into flank of tooth C is planted at the pieces interval.Therefore, the easy deflection of pieces, bristle tips is higher to the entering of neck section.

In addition, as above-mentioned, buffer part 12c is set to plant mao pieces of the 12a of section 11 with the pieces interval and makes in the toothbrush 1 of present embodiment of easy deflection, owing to not being toothbrush with the pitch enlargement of planting pore 12 of integral body, so, the flexible decline of pieces, the sparse sense of bristle can be suppressed, the brushing to tartar can be guaranteed fully.

Further, because buffer part 12c is formed at the tip side of planting territory, hair-fields 12, so, can not produce the not enough so sparse sense of bristle of pieces 11, good as the use sense of toothbrush 1.In addition, by being formed with buffer part 12c, thereby can not hinder the circulation of saliva etc. during cleaning in the oral cavity, easy dry, health comparatively after using in addition.

Plant mao 12b of section and do not form buffer part 12c due to the front portion that contacts with the flank of tooth, pieces 11 more thickly exists, thereby can clean fully the flank of tooth.

Due in addition, mao pieces of the 12b of section 11 is planted when existing in the front portion rarelyr, the front portion is planted mao elasticity of the pieces of the 12b of section 11 and is died down, so, when when cleaning improved the pressing force of 11 pairs of flank of tooth of pieces in the oral cavity, brushhead 10 becomes and easily contacts with the flank of tooth, in the toothbrush 1 of present embodiment, owing to having guaranteed fully the anterior mao pieces of the 12b of section 11 of planting, so can prevent that also brushhead 10 from contacting with the flank of tooth even improve the pressing force of 11 pairs of flank of tooth of pieces.By improving the pressing force of 11 pairs of flank of tooth of pieces, plant mao pieces of the 12a of section 11 to the entering of neck section thereby can more improve the pieces interval.

In addition, the invention is not restricted to above-mentioned embodiment.

The arrangement of planting pore 13 not necessarily lattice-like is arranged, and can be also to be staggered or other certain arrangements such as asymmetric geometry.The arrangement of planting pore 13 also need not relative central shaft B symmetry.But, the viewpoint of the entering from the bristle tips of pieces 11 to neck section, the relative central shaft B of arrangement that preferably plants pore 13 is symmetrical.

In the above-described embodiment, the length direction of buffer part 12c be plant territory, hair-fields 12 from the base end side of brushhead 10 direction towards the top, and the length direction of buffer part 12c can be also the direction that intersects vertically with the center line B that plants territory, hair-fields 12.

In addition, buffer part 12c can not be also rectangular-shaped.But the shape of buffer part 12c is determined by the arrangement of planting pore 13 adjacent with buffer part 12c.In the asymmetrical situation of the relative central shaft B of the arrangement of planting pore 13, buffer part 12c is the shape of the complexity of non-line symmetry.

In addition, toothbrush of the present invention also can be used as the brush use that electric toothbrush is used.Even toothbrush of the present invention is used when the brush that electric toothbrush is used, also can make bristle tips to the entering of neck section with to the brushing of tartar and deposit and use and feel good.

Embodiment:

Below, by embodiment, the present invention is further elaborated, but the present invention is not limited by these embodiment.

Embodiment 1:

Be produced on the substantial middle of the width of planting the territory, hair-fields and the toothbrush that base end side is formed with rectangular-shaped buffer part.In this toothbrush, configure, plant kind, L1, L2, L1/L2 * 100, L3, L4 and L3/L4 * 100 of the bristle of the diameter of pore, the quantity of planting pore, formation pieces about planting pore, as table 1.In addition, be 0.7mm from the pore spacing each other of planting of cardinal extremity on the direction on top of brushhead, the staple length of bristle is 10mm, the thickness of bristle is 7.5mil.

Embodiment 2～12, comparative example 1～4:

Except change as shown in table 1,2 and 3 kind, L1, L2, L1/L2 * 100, L3, L4 and L3/L4 * 100 that make diameter, the quantity of planting pore will plant the pore configuration, to plant pore, consist of the bristle of pieces, other and the same toothbrush of embodiment 1.

In addition, the bristle that uses in embodiment 5 is that the mixture by PBT and PET consists of, and its mixed proportion is PBT:PET=7:3.

The bristle that uses in embodiment 6 has core sheath dual structure, and the radius of core is 76 μ m, and the thickness of sheath is 19 μ m, and the diameter of total is 190 μ m.

An end toper hair in mao section is planted at the pieces interval of embodiment 12.

About the toothbrush of each embodiment and each comparative example, by method evaluation tartar removability and the use sense of putting down in writing below.Evaluation result is as shown in table 1,2 and 3.

The tartar removability:

Use the Tooth-brushing device of Lion Corporation's system, measure the rate of removing of the artificial tartar that applies on the tooth of chin model.At maxilla the 2nd premolar teeth front surface, the 1st molar front surface and the 2nd molar front surface applicating artificial tartar, use the toothbrush of each embodiment and each comparative example, carry out the sweeping test according to sweeping condition (brushing pressure=200g, stroke=20mm, speed=40mm/ second).In addition, measure the area of the part that is removed artificial tartar by image analysis, by mathematical expression (tartar remove area/neck section entire area) * 100(%) try to achieve tartar to remove rate.Numerical value in table is the mean value of 6 tests.

It is higher that tartar is removed rate, and the bristle tips that means pieces is to the entering of neck section and better to the brushing of tartar.Even if the bristle tips of pieces only has a side good in the entering of neck section or the brushing to tartar, the removability of tartar is not uprised yet.

Use sense:

7 inspectors used the toothbrush of each embodiment and each comparative example between 7 days, the neck section when brushing teeth and the brushing of flank of tooth sensation are estimated by sensory evaluation.Be evaluated as 1 minute～7 minutes seven ranks, mark is higher, uses sense better.

Overall merit:

Described tartar removability and feel the overall merit judged such as following by use.About this overall merit as shown in table 1,2 and 3.

◎: tartar remove rate in the use sense of more than 80% and relatively neck section and the flank of tooth all more than 4 minutes

Zero: tartar remove rate in the use sense of more than 70% and relatively neck section and the flank of tooth all more than 4 minutes

*: tartar is removed rate less than 70%, perhaps, the relative use sense less than 4 minutes of neck section, perhaps, the use sense less than 4 minutes of the flank of tooth relatively

Table 1:

Table 2:

Table 3:

The toothbrush of the embodiment 1～12 that is formed with buffer part at substantial middle and the base end side of the width of planting the territory, hair-fields, its tartar removability is good.Thereby the bristle tips of pieces is to the entering of neck section and all good to the brushing of tartar.In addition, the use sense of the toothbrush of embodiment 1～12 is also good.

Do not have the tartar removability of toothbrush of comparative example 1 of buffer part and insufficient for the use sense of neck section.

L1/L2 * 100 are toothbrushes of 80.9% comparative example 2, and its use sense for the flank of tooth is insufficient.

L1/L2 * 100 are toothbrushes of 23.1% comparative example 3, its tartar removability and insufficient for the use sense of neck section.

Buffer part is formed on the substantial middle of the width of planting the territory, hair-fields, and is not formed on the toothbrush of the comparative example 4 of base end side, its tartar removability, insufficient for the use sense of neck section and the flank of tooth.

Its reason is as can be known, in the toothbrush of comparative example 4, because the pieces of the pieces of tip side and base end side supports mutually, so, also can suppress the deflection of pieces although have buffer part.

In addition, by to embodiment 1,4 and 6 comparison, as can be known: than using broad wool, use the taper hair can obtain higher tartar and remove rate, further, when using the taper hair of multiple cored structure in the taper hair, the tartar rate of removing uprises more.

In addition, by to embodiment 1,7 and 8 comparison, the diameter of planting as can be known pore more diminishes, and the tartar removability is better.

Embodiment 13～23:

Making is planted the pore configuration, is planted diameter, L1, L2, L1/L2 * 100, L3, L4 and L3/L4 * 100 toothbrush as shown in table 4 of pore.

Table 4:

Utilize possibility on industry

The present invention be owing to can provide a kind of bristle tips that can make to the entering of neck section with to the brushing of tartar and deposit and use the good toothbrush of sense, thereby industrial exceedingly useful.

Claims

1. a toothbrush, is characterized in that, comprising: plant hair have with many bristles prick Shu Ercheng pieces brushhead and extend the handle portion that arranges from described brushhead,

Only plant a mao section at 25～75% the region division pieces interval from the cardinal extremity of described brushhead to the top, length that plant the territory, hair-fields, plant a mao section at described pieces interval, across the center line of planting the territory, hair-fields from the cardinal extremity of described brushhead to the top and adjacent pieces be each other with described plant length on the territory, hair-fields and direction described vertical and intersectant centerline 15～70% apart from arranged spaced

The pieces existing zone of mao section is planted to the base end side opening of described brushhead in described pieces interval.

2. toothbrush according to claim 1, is characterized in that, described pieces interval is planted mao section and had the bristle that diminishes gradually to the bristle tips diameter.

3. toothbrush according to claim 1, is characterized in that, described pieces interval is planted mao section and comprised the polyester bristle with multilayer core structure, and this multilayer core structure comprises core and is arranged on the sheath of one deck at least section in the outside of described core.

4. toothbrush according to claim 1, is characterized in that, described pieces interval is planted mao section and had the bristle that the mixture by a plurality of polyester consists of.

5. the described toothbrush of any one according to claim 1-4, is characterized in that, planting hair, part or all the diameter of planting pore of pieces is arranged is the scope of 1.0～1.3mm.