CN104284612A

CN104284612A - Toothbrush

Info

Publication number: CN104284612A
Application number: CN201380015424.9A
Authority: CN
Inventors: 小林海之
Original assignee: Lion Corp
Current assignee: Lion Corp
Priority date: 2012-05-23
Filing date: 2013-05-10
Publication date: 2015-01-14
Anticipated expiration: 2033-05-10
Also published as: JP6141835B2; JPWO2013175975A1; KR20150014912A; WO2013175975A1; CN104284612B

Abstract

A toothbrush has bristle bundles embedded in the bristle embedding surface of a head section, the bristles bundles being each formed by bundling bristles. The head section comprises an elastic member provided with: a base provided to the bristle embedding surface so as to protrude therefrom; and protrusions formed on the protrusion end surface of the base. The protrusion end surface side of the base is branched.

Description

Toothbrush

Technical field

The present invention relates to a kind of toothbrush.

The application in No. 2012-117748, the patent Patent of Japanese publication and CLAIM OF PRIORITY, and quotes its content at this based on May 23rd, 2012.

Background technology

As basic function, requiring intraoral cleaning effect and the massage effect of toothbrush, by improving this basic function, thus realizing the high added value of toothbrush.In order to improve the basic function of toothbrush, generally to plant the configuration of pore and shape, the kind of bristle and shape, pieces cut pile shape etc. combine.

Such as, propose so a kind of toothbrush, it has the Bristol bar (Japanese: Block リストルバー) (such as, patent document 1) formed by the material implementing gluing.This Brister Shandong bar is the bar width of brush being established the roughly cuboid making length direction, when brushing away tooth tongue from dental surface to when carrying out clean in oral cavity.

In addition, as by the toothbrush improved for the purpose of massage effect, there will be a known a kind of toothbrush being provided with the massager be made up of elastomer.

As the toothbrush being provided with massager, propose a kind of such as with the toothbrush of Toothbrushing stick, the cylindrical shaft-like parts (such as, patent document 2) of tool rubber mass springy are set in the outermost both sides of planting hair.Adopt the invention of patent document 2, when passing through in pieces oral cavity cleaning, the cylindrical shaft-like parts by rubber mass are massaged gum.

Patent document 1: Japan Patent JP-A 11-502439 publication

Patent document 2: Japanese Utility Model Showa 58-17029 publication

Invent problem to be solved

But, in the technology of patent document 1, although Bristol bar slides on gum, insufficient to the massage effect of gum.In addition, in the technology of patent document 2, although the cylindrical shaft-like parts of rubber properties push gum, massage effect is insufficient.Because cylindrical shaft-like parts are without hardness, can not with large pressure bias gum.In addition, if only improve the rigidity of cylindrical rod-like members, then can the intraoral cleaning effect of obvious damage, also have the problem that contact sense declines.

So, in technology in the past, be all difficult to that there is the massage effect of gum and intraoral cleaning effect simultaneously.

Summary of the invention

Therefore, the object of the invention is to, a kind of like this toothbrush that can damage cleaning effect ground and effectively massage gum is provided.

For solving the means of problem

Toothbrush of the present invention, the pieces multiple bristle tuft pricked is had in the implanting on hair side of planting of head, the feature of this toothbrush is, described head is provided with elastomeric element, this elastomeric element has: projectingly plant the base portion on hair side described and be formed in the multiple juts on the outstanding end face of described base portion, the outstanding end face side branch of described pedestal.

Be preferably, described elastomeric element, by from jag facing to the otch of cardinal extremity branch, be preferably, described elastomeric element is provided with more than 2, and in the both sides of the width of described head and the length direction of described head or any one party, clip described pieces and arrange, be preferably, described elastomeric element, it plants height on hair side lower than described pieces.

That is, the present invention is as follows.

[1] toothbrush, has in the implanting on hair side of planting of head the pieces multiple bristle tuft pricked,

Described head has elastomeric element, and this elastomeric element has: projectingly plant the base portion on hair side described and be formed in the multiple juts on the outstanding end face of described base portion,

The outstanding end face side branch of described base portion.

[2] toothbrush as described in [1], described base portion, by the otch of planting hair side facing to described from described jag and branch.

[3] toothbrush as described in [1] or [2], described head has the described elastomeric element of more than 2, less than 12,

Described elastomeric element, at least one party in the width of described head and the length direction of described head upwards, clips a part for described pieces and arranges.

[4] as the toothbrush in [1] ~ [3] as described in any one, the height of planting on hair side of described elastomeric element, lower than the minimum of a value of planting the height on hair side of described pieces.

In toothbrush of the present invention, be also preferably, described base portion is rectangular flat column when overlooking.

Be preferably, described jut, the Breadth Maximum when the arbitrary face parallel with described outstanding end face cuts off reduces along with towards jag.

Be preferably, described head has the described elastomeric element of more than 3, less than 12, described elastomeric element, the width of described head and the length direction of described head at least one party upwards, clip a part for described pieces and arrange.

Be preferably, described elastomeric element is located at the both sides of the width of described head.

In addition, as other form of the present invention, may also be, described head has the described elastomeric element of more than 2, less than 12, and described elastomeric element is located between described pieces on the length direction of described head.

In addition, may also be, described elastomeric element is surrounded by described pieces.

In addition, may also be, described elastomeric element, the length direction along described head is provided with more than 3, less than 12 side by side, and is provided with pieces between this elastomeric element be located at side by side is mutual.

May also be, described base portion, by being formed in recessed bar on its outstanding end face and branch.

The effect of invention

Adopt toothbrush of the present invention, can not cleaning effect be damaged, can gum massage effectively.

Accompanying drawing explanation

Figure 1A is the top view of the head of the toothbrush of one embodiment of the present invention.

Figure 1B is the side view of the head of the toothbrush of one embodiment of the present invention.

Fig. 2 A is the top view of the head of the toothbrush of another embodiment of the present invention.

Fig. 2 B is the side view of the head of the toothbrush of another embodiment of the present invention.

Fig. 3 A is the top view of the head of the toothbrush of another embodiment of the invention.

Fig. 3 B is the side view of the head of the toothbrush of another embodiment of the invention.

Fig. 4 A is the top view of the head of the toothbrush of another embodiment of the invention.

Fig. 4 B is the side view of the head of the toothbrush of another embodiment of the invention.

Fig. 5 is the side view of the elastomeric element of one embodiment of the present invention.

Fig. 6 A is the top view of the head of the toothbrush of another embodiment of the invention.

Fig. 6 B is the side view of the head of the toothbrush of another embodiment of the invention.

Fig. 7 A is the top view being used as the head of the toothbrush of comparative example of the present invention.

Fig. 7 B is the side view being used as the head of the toothbrush of comparative example of the present invention.

Fig. 8 A is the top view being used as the head of the toothbrush of comparative example of the present invention.

Fig. 8 B is the side view being used as the head of the toothbrush of comparative example of the present invention.

Fig. 9 A is the top view being used as the head of the toothbrush of comparative example of the present invention.

Fig. 9 B is the side view being used as the head of the toothbrush of comparative example of the present invention.

Figure 10 A is the top view being used as the head of the toothbrush of comparative example of the present invention.

Figure 10 B is the side view being used as the head of the toothbrush of comparative example of the present invention.

Figure 11 A is the top view being used as the head of the toothbrush of comparative example of the present invention.

Figure 11 B is the side view being used as the head of the toothbrush of comparative example of the present invention.

Figure 12 A is the top view being used as the head of the toothbrush of comparative example of the present invention.

Figure 12 B is the side view being used as the head of the toothbrush of comparative example of the present invention.

Symbol description

1,100,200,300,400 toothbrushes

2 heads

3 handle portion

10,110,410 elastomeric elements

12,112,412 base portion

13,113,413 outstanding end faces

14 juts

16 otch

20 plant hair side

32,132 pieces

116 recessed bars

Detailed description of the invention

Toothbrush of the present invention is planted on hair side at head, and implanting has pieces, and is provided with elastomeric element, and this elastomeric element has base portion and is formed in the multiple juts on the outstanding end face of described base portion.Below, show embodiment and toothbrush of the present invention is described.

(the first embodiment)

For the toothbrush of the first embodiment of the present invention, be described referring to Figure 1A and Figure 1B.

The toothbrush 1 of Figure 1A and Figure 1B has: handle body, and this handle body has the handle portion 3 of rectangular shape and is located at the head 2 on handle portion 3 top; And elastomeric element 10, this elastomeric element 10 is located at planting on hair side 20 of head 2.

The plan view shape of head 2 is by the center by head 2, and using from cardinal extremity 22 towards the extending direction of the axes O 1 on top 21 as the rectangle of length direction.

In addition, for " rectangle " in this description, part or all comprising top is formed with the rectangle of the corner cut of straight line or curve and part or all rectangle formed by curve on limit.

Planting the middle body of hair side 20, implanting has the pieces 32 multiple bristle tuft pricked of 2 row (the pieces number that the width along head arranges) × 6 row (the pieces number that the length direction along head arranges), thus forms central pieces group 30.In addition, in the side, top 21 of central pieces group 30 of planting hair side 20, the pieces 32 having 2 row × 1 row, 4 row × 1 row is planted in order from top 21.In addition, in cardinal extremity 22 side of central pieces group 30, implanting has the pieces 32 of 3 row × 1 row.Like this, in the present embodiment, be formed be made up of 21 pieces 32 plant a mao portion.In addition, as long as have effect of the present invention, also columns and the line number of implanting pieces 32 can suitably be changed, such as, also can from the top 2 of head in order, in the mode of 1 ~ 3 row × 1 ~ 2 row, 2 ~ 4 row × 1 ~ 2 row, 2 ~ 3 row × 2 ~ 10 row (central pieces group 30), 1 ~ 3 row × 1 ~ 2 row, pieces 32 be planted.

In addition, planting on hair side 20, be respectively provided with 2 elastomeric elements 10 in the width both sides of the head 2 clipping central pieces group 30.Clipping the side of central pieces group 30, the extending direction along axes O 1 arranges 2 elastomeric elements 10, and clipping the opposite side of central pieces group 30, the extending direction along axes O 1 arranges 2 elastomeric elements 10.In addition, " width " of so-called head 2, be direction orthogonal with axes O 1 when overlooking, " length direction " of head 2 is extending directions of axes O 1.

In toothbrush 1, head 2 and handle portion 3 entirety are integrally formed as rectangular shape, such as, are that material use injection molding obtains with resin.Form the resin of handle body, can consider that rigidity required by toothbrush 1 and mechanical property etc. are determined, can enumerate such as: bending modulus (JIS K7203) is in the high hardness resin of 500 ~ 3000PMa scope.As this high hardness resin, can enumerate such as: polypropylene (PP), PETG (PET), polycyclic own diformazan terephalic acid ester (PCT), polystyrene (PS), acrylonitrile-butadiene-styrene resin (ABS), cellulose propionate (CP), polyarylate, Merlon and acrylonitrile-styrene copolymerized resin (AS) etc.They can be used alone a kind of or appropriately combined more than two kinds use.

In addition, handle portion 3 also a part or whole part can be coated with the supple resin of such as elastomer etc.

The size of head 2, can consider that intraoral operability etc. is determined, such as, width becomes 8 ~ 15mm, and length becomes 15 ~ 40mm, and thickness becomes 2.5 ~ 8mm.

As forming the bristle of pieces 32, can enumerate: the diametrically bristle (taper hair) that diminishes gradually of high-quality green tea; Except the rounded portions of high-quality green tea, the bristle (broad wool) that external diameter is roughly the same; Spiral helicine bristle; And the bristle etc. of curling shape.

The material of bristle, can use such as: the polyamide of 6-12 nylon, 6-10 nylon etc.; The polyester of PET, polybutylene terephthalate (PBT) (PBT), PTT (PTT), PEN (PEN), PBN (PBN) etc.; The synthetic resin material of the polyolefin, olefin type elastomer, styrenic elastomer etc. of PP etc.

These resin materials, also capable of being combinedly multiplely to use, and wherein, from easily strengthening hardness, tooth dirt removes the higher viewpoint of property, preferably uses the mixture of multiple polyester.

In addition, as the mixture of multiple polyester, combination is preferably: the combination of PETG and polybutylene terephthalate (PBT); The combination of PETG and PTT; The combination of polybutylene terephthalate (PBT) and PTT; Or the combination of PETG, polybutylene terephthalate (PBT), PTT.

In addition, as bristle, can enumerate: the polyester bristle with multiple core construct, this multiple core construct is the structure in the sheath portion having core and be located at outside described core more than at least one deck.If have multiple core construct, then core can use different polyester from sheath portion, and easily adjustment machinery is physical.Therefore, the bristle that hardness is strong, the dirty removal of tooth is higher can easily be obtained.

In addition, as the combination of different polyester of bristle that can be used for above-mentioned core and sheath portion, combination is preferably: sheath portion is PETG, core is the combination of polybutylene terephthalate (PBT); Sheath portion is polybutylene terephthalate (PBT), core is the combination of PTT; Or sheath portion be PETG, core is the combination of PTT.

The shape of cross section of bristle is preferably circular, but be not necessarily defined in circle, may correspond to the object purposes in toothbrush 1 and make arbitrary shape, such as, can be ellipse, polygon (such as triangle, quadrangle, pentagon, hexagon and star etc.), the clover shape of trilobal, the clover shape etc. of four leaves.

The rugosity (Breadth Maximum namely in cross section) of bristle, can consider that material and length etc. are suitably determined, such as, when cross section is circular, be preferably 3 ~ 12mil (1mil=1/1000inch=0.025mm), 4 ~ 10mil is better.

In addition, also can consider use sense, brush and sweep sense, cleaning effect and durability etc., and the many bristles being combined rugosity not identical use.

Plant the rugosity (i.e. Breadth Maximum in the cross section of pieces) of the pieces 32 of hair side 20, can consider that the material and rugosity etc. of bristle are determined, such as, be preferably 1 ~ 3.5mm, 1.5 ~ 2.5mm is better.The pieces rugosity of pieces 32 that both can be whole is identical, also can be mutually different.

In addition, the beeline between the pieces of planting hair side 20, both can be identical between whole pieces, also can distinguish difference.As the beeline between the pieces of planting hair side 20, be preferably 0.2 ~ 1.2mm, 0.3 ~ 1.0mm is better.

Staple length (i.e. the height of the pieces 32) H1 of pieces 32, namely from the length of planting hair side 20 to pieces 32 top, can determine within the scope of such as 6mm ~ 15mm.The staple length H1 of pieces 32 that both can be whole is identical, also can be mutually different.

In addition, also such as the staple length H1 of each pieces 32 can being adjusted to, uprising along with planting the width central authorities of mao portion to head 2 (i.e. axes O 1).

Elastomeric element 10 has: projecting base portion 12 of planting on hair side 20; And the multiple juts 14 be formed on the outstanding end face 13 (namely in base portion 12 with the face of planting the face opposite side that hair side 20 is connected) of base portion 12, and outstanding end face 13 side that elastomeric element 10 is configured to base portion 12 is branched off into 4.

In the present embodiment, be rectangular flat column when base portion 12 is and the extending direction of axes O 1 is set to overlooking of length direction, the opposite side and 4 tops that form the width of shape when it is overlooked are formed by curve.Base portion 12 is from its end face 13 extremely outstanding with the border (i.e. the cardinal extremity of base portion 12) of planting hair side 20, and the Breadth Maximum after the arbitrary section parallel with outstanding end face 13 cuts off both can be identical, also can reduce gradually, also can expand gradually.

Base portion 12 is formed from outstanding end face 13 towards the otch 16 of planting hair side 20.That is, outstanding end face 13 side of base portion 12 is by otch 16 and branch.

In addition, in present specification and claims, so-called " otch ", refers to that the Breadth Maximum by the outstanding end face side branch of base portion is less than the slit (gap) of 3mm.

At the outstanding end face 13 of base portion 12, form jut 14 in the mode arranging 2 on the width of base portion 12, arrange 4 at the length direction of base portion 12.Jut 14 is for roughly positive circular when overlooking, coniform along with the undergauge towards jag.Otch 16 is formed between the jut 14 that the length direction along base portion 12 arranges, and the various piece after base portion 12 branch is respectively provided with 2 juts 14.

In addition, jut 14 is not limited on the width of base portion 12, form 2, on the length direction of base portion 12, form 4, as long as have effect of the present invention, also can form 1 ~ 3 on the width of base portion 12, form 2 ~ 8 in the longitudinal direction.

In addition, the various piece of base portion 12 branch is not limited to respectively have 2 juts 14, as long as have effect of the present invention, also can have 1 ~ 4 respectively.

In the present embodiment, elastomeric element 10 is by parts integrally formed to base portion 12 and jut 14, such as, is that material is obtained by injection molding with resin.Form the resin of elastomeric element 10, as long as in oral cavity cleaning time produce the resin of the flexure of appropriateness, can enumerate such as: soft resin.As soft resin, be preferably the resin that hardness (JISK6253 hardness test, experimental condition JIS A) is 5 ~ 100, hardness be 20 ~ 60 resin better.This is because, when hardness is more than 5, just there is sufficient elasticity, sufficient massage effect can be obtained, when hardness is less than 100, would not gum be damaged, and sufficient massage effect can be obtained.

As the object lesson of soft resin, can enumerate: polyolefins thermoplastic elastomer, polystyrene-type thermoplastic elastomers, polyurethane-type thermoplastic's elastomer, polyester-type thermoplastic's elastomer, 1,2-polybutadiene analog thermoplastic elastomer, ethylene-vinyl acetate analog thermoplastic elastomer, polyvinyl chloride analog thermoplastic elastomer, natural rubber analog thermoplastic elastomer, fluorine analog thermoplastic elastomer, using trans-polyisoprene analog thermoplastic elastomer etc.

In the present embodiment, the height h1 of elastomeric element 10, namely plants the length of hair side 20 to jut 14 jag, and can consider that the staple length H1 of pieces 32 and the material etc. of elastomeric element 10 are determined, such as, be preferably 5.5 ~ 14.5mm, 7 ~ 11mm is better.More than for above-mentioned lower limit, then time in oral cavity cleaning, jut 14 easily abuts with gum, can obtain better massage effect.When for below above-mentioned higher limit, then elastomeric element 10 has hardness and the flexibility of appropriateness, can further improve massage effect.

In addition, the height h1 of elastomeric element 10, is preferably lower than the maximum of the staple length H1 of pieces 32, and be preferably 0.5 ~ 3mm with the difference of height D1 represented by [H1]-[h1], 1 ~ 2.5mm is better.By making elastomeric element 10 lower than pieces 32, thus can further improve the cleaning effect in pieces 32 pairs of flank of tooth or between cog portion and the massage effect of elastomeric element 10 pairs of gums.

The height h2 of base portion 12, can consider that hardness required by elastomeric element 10 and flexibility are determined, such as, be preferably 5 ~ 11mm, 6 ~ 8mm is better.The maximum of length when namely the length L1 of base portion 12 overlooks on the length direction of base portion 12, can consider that hardness required by elastomeric element 10 and flexibility are determined, such as, be preferably 3 ~ 15mm, 5 ~ 10mm is better.

The maximum of length when namely the width W 1 of base portion 12 overlooks on the width of base portion 12, can consider that hardness required by elastomeric element 10 and flexibility are determined, such as, be preferably 1 ~ 3mm, 1.5 ~ 2.5mm is better.

The height h3 of jut 14 is namely from the length of outstanding end face 13 to jut 14 jag, and can consider that the material etc. of jut 14 is determined, such as, be preferably 0.5 ~ 4mm, 1 ~ 3mm is better.If in above-mentioned scope, then can obtain better massage effect.

The width r1 (namely as the Breadth Maximum of jut 14 cardinal extremity) of jut 14, as long as the total of the width r1 of 2 nose portion is less than the width W 1 of base portion 12, and can consider that the material etc. of jut 14 is determined, such as, be preferably 0.5 ~ 2mm, 0.8 ~ 1.2mm is better.If in above-mentioned scope, then the balance of intensity and flexibility is good.In addition, the width r1 of jut 14 that both can be whole is identical, also can be mutually different.

The degree of depth d1 of the otch 16 in base portion 12, can consider that the material of base portion 12 and width W 1 etc. are determined, such as, is preferably the 1/3 ~ 2/3,2/5 ~ 3/5 better of base portion 12 height h2.When being less than above-mentioned lower limit, then likely elastomeric element 10 to give the stimulation of gum excessively strong, when exceeding above-mentioned higher limit, then likely elastomeric element 10 to give the stimulation of gum excessively weak, thus massage effect is insufficient.

Ultimate range between the width w2 of otch 16 and the component of base portion 12, can consider that the material etc. of base portion 12 is determined, such as, be preferably below 2mm, and below 1mm is better, then is more preferably below 0.5mm, also can contact between the part of branch.When width w2 is below above-mentioned higher limit, then elastomeric element 10 can give the stimulation of appropriateness to gum, can improve massage effect further.

The beeline w1 of arbitrary otch 16 and another otch 16, as long as the distance of jut can be formed in the part of the branch of base portion 12, can consider the material of base portion 12 and length L1, width W 1, jut 14 width r1 etc. determine, such as, be preferably 0.8 ~ 5mm, 1 ~ 3mm is better.In addition, beeline w1 both can be all identical, also can be mutually different.

When being less than above-mentioned lower limit, likely to give the stimulation of gum excessively weak for elastomeric element 10, and massage effect is just insufficient, and when exceeding above-mentioned higher limit, likely to give the stimulation of gum excessively strong for elastomeric element 10.

As the beeline between the elastomeric element 10 arranged on the extending direction of axes O 1, be preferably 2 ~ 10mm, 3 ~ 8mm is better.

The beeline of elastomeric element 10 and central pieces group 30, be preferably 0.2 ~ 1.5mm, 0.3 ~ 1.0mm is better.

In addition, central pieces group 30 preferably its width is 2 ~ 5mm, and length is 2 ~ 12mm.

The manufacture method of toothbrush 1, can enumerate such as following manufacture method, and it has and has following operation: form (once-forming) handle body, and obtained handle body arranges the forming process of elastomeric element 10 (secondary forming); And on head 2, then plant pieces 32 plant a mao operation.

Once-forming is such operation: use a pair one time mould, a pair one time mould is formed with the chamber corresponding with the shape of handle body, the resin (being sometimes referred to as a resin) forming handle body is injected in described chamber, thus shaping handle body.

Then secondary forming is such operation: use a pair two times moulds, a pair two times mould is formed with the chamber corresponding with the shape of elastomeric element 10, once-forming obtained handle body is loaded in the chamber of secondary mould, inject to forming the resin (being sometimes referred to as secondary resin) of elastomeric element 10 in secondary mould, thus elastomeric element 10 is set planting on hair side 20.The shape of the chamber of secondary mould is formed as: when being loaded in chamber by handle body, and the handle body of filling is corresponding with elastomeric element 10 with the space formed between chamber.

Planting mao operation is plant on head 2 by pieces 32, make the operation of toothbrush 1.The implanting of pieces 32, can use known method, can enumerate such as lenticular wire and plant a mao method: by the pieces doubling be made up of many bristles, sandwiches the parts (lenticular wire) of anti-avulsion in-between, is hammered into plant in pore by this lenticular wire to be fixed pieces.This lenticular wire can use known lenticular wire, can enumerate such as: the flat lenticular wire of brass system, aluminum.

Then, to the using method of the toothbrush 1 of present embodiment, to be described cleaning in oral cavity by rubbing manipulation or shower method.

The top of pieces 32 is abutted with the flank of tooth and neck portion, toothbrush 1 is moved back and forth along the extending direction of axes O 1.Now, pieces 32 brushes away the dirt in the flank of tooth, between cog portion or neck portion, and jut 14 slides on gum simultaneously.When jut 14 slides on gum, jut 14 or base portion 12 bend because of its resistance and elasticity is recovered.In addition, due to base portion 12 by otch 16 branch, therefore, the part of branch is respectively to the length direction of elastomeric element 10 and width flexure, and appropriateness relaxes the stimulation to gum.In addition, namely a part for pieces 32 forms the pieces 32 of central pieces group 30, because the elastomeric element 10 being arranged on head 2 width both sides clips, therefore, to the mobile restricted system of head 2 width.Like this, the elastomeric element 10 of toothbrush 1 is with the pressure of appropriateness pressing gum, and play the massage effect to gum, meanwhile, pieces 32 carries out wiping to the flank of tooth, between cog portion or neck portion well and sweeps.

Adopt present embodiment, owing to being provided with elastomeric element 10, therefore, time in oral cavity cleaning, the massage effect to gum can be played.

The elastomeric element 10 of present embodiment, owing to being the elastomeric element being formed with jut 14 in base portion 12, therefore, time in oral cavity cleaning, mainly jut 14 abuts with gum.Breadth Maximum due to the cardinal extremity of jut 14 is less than width and the length of base portion 12, therefore, while the power concentrated on jag is passed to gum, can flexibly bend.Therefore, the contact sense of gum softness is given.

In addition, because elastomeric element 10 has appropriate rigidity by base portion 12, therefore, it is possible to given the stimulation of gum appropriateness intensity by jut 14, massage effect can be improved.

In addition, due to the outstanding end face 13 side branch of base portion 12, therefore, by rubbing manipulation or shower method to when carrying out clean in oral cavity, the branch of base portion 12 bends respectively, appropriateness can relax the stimulation of giving gum.

That is, elastomeric element 10, owing to periodically becoming easy flexure from cardinal extremity to jag, therefore, jut 14 abuts with gum with the contact sense of softness, simultaneously overall stimulation of giving gum appropriateness.

Generally, toothbrush is designed to, and in oral cavity cleaning internal procedure, mutually interferes between pieces, can play the hard intensity of hair of appropriateness thus.If arrange elastomeric element 10 at the hair side of planting of this toothbrush, pieces can be in the tendency that quantity tails off, the hard intensity of hair declines, cleaning effect declines.

Adopt present embodiment, because the part of pieces 32 and central pieces group 30 are clipped by elastomeric element 10, therefore, the pieces 32 forming central pieces group 30 is restricted to the flexure situation of the width of head 2.Therefore, even if the quantity of pieces 32 tails off, also there is strong hair hardness, can further improve cleaning effect.

(the second embodiment)

Referring to Fig. 2 A and Fig. 2 B, the toothbrush of the second embodiment of the present invention is described.

For the parts identical with the first embodiment, put on identical symbol, and the description thereof will be omitted, mainly the difference with the first embodiment is described.

The toothbrush 100 of present embodiment, is provided with pieces 132 between 2 elastomeric elements 10 of the arranged on both sides of the length direction (i.e. the extending direction of axes O 1) of head 2.That is, to be its elastomeric elements 10 a kind of clip the part of pieces and the toothbrush arranged at the width of head 2 and these both sides of length direction with toothbrush 100.

Plant hair side 20, plant the pieces 21 having 2 row × 1 row, 4 row × 1 row, 2 row × 3 row, 4 row × 1 row (wherein, representing the pieces at the width two ends of head 2 with symbol 132), 2 row × 3 row, 3 row × 1 row from the top 21 of head in order.Beeline between the pieces of planting hair side 20, identical between pieces that both can be whole, also can distinguish difference.As the beeline between pieces, be preferably 0.2 ~ 1.2mm, 0.3 ~ 1.0mm is better.

The mode that elastomeric element 10 is the extending direction of axes O 1 with its length is respectively provided with 2 in the both sides of the width of head 2.Two pairs of elastomeric elements 10 relative on the width of head 2 all clip the pieces 32 of 2 row × 3 row and arrange.By centered by pieces 132 and the pieces 32 being positioned at 2 row × 3 row that a pair elastomeric element 10 of side, top 21 clips form the first central pieces group 130a.In addition, by centered by pieces 132 and the pieces 32 being positioned at 2 row × 3 row that a pair elastomeric element 10 of cardinal extremity 22 side clips form the second central pieces group 130b.

Preferably, its width is 2 ~ 5mm to central authorities pieces group 130a, and length is 2 ~ 10mm.

Preferably, its width is 2 ~ 5mm to central authorities pieces group 130b, and length is 2 ~ 10mm.

In addition, between a pair elastomeric element 10 arranged along the extending direction of axes O 1, implanting has pieces 132.

The beeline of each elastomeric element 10 and pieces 132, both can be all identical, also can be different.As the beeline between elastomeric element 10 and pieces 132, be preferably 0.3 ~ 1.2mm, 0.5 ~ 1.0mm is better.

In addition, as the beeline of elastomeric element 10 with central pieces group 130a or central pieces group 130b, be preferably 0.2 ~ 1.5mm, 0.3 ~ 1.0mm is better.

In addition, as long as have effect of the present invention, also columns and the line number of implanting pieces 32 can suitably be changed, also the pieces 32 having 1 ~ 3 row × 1 ~ 2 row, 2 ~ 4 row × 1 ~ 2 row, 1 ~ 3 row × 1 ~ 4 row (central pieces group 130a), 3 ~ 5 row × 1 ~ 2 row (wherein, representing with symbol 132 pieces that the width two ends zero ~ zero of head 2 arrange), 1 ~ 2 row × 1 × 4 row (central pieces group 130b), 1 ~ 3 row × 1 ~ 2 row such as can be planted in order from the top 21 of head.

Adopt the toothbrush 100 of present embodiment, elastomeric element 10 clips a part (that is, central pieces group 130a and central pieces group 130b) for pieces 32 and arranges on the width of head 2, clips pieces 132 and arrange at the length direction of head 2.Therefore, when with when cleaning in toothbrush 100 pairs of oral cavities, form the pieces 32 of the first central pieces group 130a, form the pieces 32 of the second central pieces group 130b, the flexure situation to head 2 width is restricted.Therefore, form the pieces 32 of the first central pieces group 130a and the second central pieces group 130b, firmly clean in oral cavity with stronger hair.

In addition, because pieces 132 is clipped by elastomeric element 10 on the length direction of head 2, therefore, when making toothbrush 100 move back and forth along axes O 1 extending direction, flexure situation to head 2 length direction is restricted, firmly can clean in oral cavity with stronger hair.

So, clip a part for pieces by elastomeric element 10 at the width of head 2 and these both sides of length direction and arrange, thus the cleaning effect of toothbrush 100 can be improved further.

(the 3rd embodiment)

Referring to Fig. 3 A and Fig. 3 B, the toothbrush to third embodiment of the invention is described.

For the parts identical with first and second embodiment, put on identical symbol, the description thereof will be omitted, is mainly described with first and second embodiment difference.

The toothbrush 200 of present embodiment, axes O 1 is separated arrangement and is provided with 3 elastomeric elements 10, each elastomeric element 10 using the extending direction of axes O 1 as width.

Planting hair side 20, be provided with in order from the top 21 of head: the pieces 32 that pieces 32,4 arranges the pieces 32 of × 1 row, elastomeric element 10,4 arranges × 1 row of 2 row × 1 row, elastomeric element 10,4 are arranging the pieces 32 of × 1 row, the pieces 32 and 3 of elastomeric element 10,4 row × 1 row arranges the pieces 32 of × 1 row.That is, the part that 3 elastomeric elements 10 of toothbrush 200 clip pieces 32 at the length direction of head 2 is arranged.

Plant the beeline between the adjacent pieces of planting hair side 20, identical between pieces that both can be whole, also can distinguish difference.As the beeline between pieces, be preferably 0.2 ~ 1.2mm, 0.3 ~ 1.0mm is better.

Be disposed in parallel in the beeline between the elastomeric element 10 in axes O 1, be preferably 2 ~ 5mm, 3 ~ 4mm is better.Beeline between elastomeric element 10, both can be all identical, also can be different.

In addition, as the beeline between elastomeric element 10 and pieces 32, be preferably 0.2 ~ 1.0mm, 0.3 ~ 0.8mm is better.Beeline between elastomeric element 10 and pieces 32, both can be all identical, also can be different.

In addition, as long as have effect of the present invention, also suitably can change the columns and line number that plant pieces 32, also can such as be provided with in order from the top 21 of head: the pieces 32 that pieces 32,2 ~ 4 arranges the pieces 32 of × 1 ~ 2 row, elastomeric element 10,3 ~ 5 arranges × 1 ~ 3 row of 1 ~ 3 row × 1 ~ 2 row, elastomeric element 10,3 ~ 5 arrange the pieces of × 1 ~ 3 row, the pieces 32 and 1 ~ 3 of elastomeric element 10,3 ~ 5 row × 1 ~ 3 row arranges the pieces 32 of × 1 ~ 2 row.

Adopt the toothbrush 200 of present embodiment, elastomeric element 10 clips a part for pieces 32 at the length direction of head 2 and arranges.Therefore, when the extending direction making toothbrush 200 along axes O 1 moves back and forth, the pieces 32 that the flexure to head 2 length direction limits by elastomeric element 10 increases, and firmly can clean the flank of tooth etc. with stronger hair.

(the 4th embodiment)

Referring to Fig. 4 A and Fig. 4 B, the toothbrush to four embodiment of the invention is described.

For the parts identical with the first ~ three embodiment, put on identical symbol, the description thereof will be omitted, is mainly described with the first ~ three embodiment difference.

The toothbrush 300 of present embodiment, in the substantial middle of planting hair side 20, is provided with 4 elastomeric elements 10 of 2 row × 2 row, and is provided with the pieces 32 elastomeric element group be made up of these 4 elastomeric elements 10 surrounded.That is, in toothbrush 300, elastomeric element 10 is not arranged to clip pieces 32.In addition, in present embodiment, elastomeric element 10 is all that the length direction of head 2 is set to length direction.

Beeline between the elastomeric element 10 that the length direction of head 2 arranges, be preferably 0.1 ~ 1.0mm, 0.3 ~ 0.8mm is better.In addition, the beeline between the elastomeric element 10 that the length direction of head 2 arranges, both can be all identical, also can be different.

Beeline between the elastomeric element 10 that the width of head 2 arranges, be preferably 0.1 ~ 1.0mm, 0.3 ~ 0.8mm is better.In addition, the beeline between the elastomeric element 10 that the width of head 2 arranges, both can be all identical, also can be different.

Beeline between elastomeric element 10 and pieces 32, is preferably 0.2 ~ 1.0mm, and 0.3 ~ 0.8mm is better.Beeline between elastomeric element 10 and pieces 32, both can be all identical, also can be different.

Adopt the toothbrush 300 of present embodiment, because elastomeric element 10 is located at the substantial middle of head 2, therefore, pieces 32 is restricted to the flexure situation of planting hair side 20 center direction, is difficult to restricted to the flexure situation of planting hair side 20 lateral direction.

Therefore, pieces 32 when strong to hair cirrhosis when planting the flexure of hair side 20 center direction, when to hair cirrhosis weak (soft contact sense) when planting the flexure of hair side 20 lateral direction, with in this oral cavity cleaning.

But in toothbrush 300, the pieces 32 near axes O 1 tails off, the easily clean true feeling of infringement.Therefore, elastomeric element 10 is preferably located at the width both sides of head 2.

(other embodiment)

The present invention is not limited to above-mentioned embodiment.

In the first ~ four embodiment, be rectangle when head is overlooked, but the present invention is not limited to this, when overlooking, shape may also be the circle of positive circle, ellipse etc., being triangle when overlooking, being pentagon etc. when overlooking, is the polygon beyond rectangle when overlooking.Here, polygon comprise that each top is formed with the shape of the corner cut of straight line or curve and each limit part or all make the shape of curve.

In the first ~ four embodiment, although it is rectangular flat column that base portion is made when overlooking, but the present invention is not limited to this, base portion i.e. positive round column or oval column cylindric, may also be when overlooking be triangle, pentagon etc. and overlook time be flat column beyond rectangle.

But, from preventing the viewpoint of user being given to intense stimulus when base portion abuts with gum and cheek, be preferably the flat column or cylindric that top is formed in curved lines, from the viewpoint improving massage effect further, be more preferably and overlook as rectangular flat column.

In the first ~ four embodiment, although jut is made coniform, the present invention is not limited to this, and the shape of jut can consider that material etc. is suitably determined.The shape of jut, but both polygon hammer shapes of such as triangle hammer shape, plane set-hammer shape, pentagon hammer shape etc., may also be hemispherical, the column of cylindric or polygonal column etc. again, or there is the jut in contracting shape portion, this contracting shape portion be then columnar part and its reduce gradually relative to the Breadth Maximum in the cross section of outstanding end face level, the Breadth Maximum in the cross section of the level of this columnar part is roughly the same relative to outstanding end face from the cardinal extremity of jut towards jag.But, more soft jut is made to the contact sense of gum, and the viewpoint that gum gives more adequate stimulus is seen, jut is preferably coniform, polygon hammer shape, hemisphere, or there is the jut etc. in contracting shape portion, this contracting shape portion be then columnar part and its reduce gradually relative to the Breadth Maximum in the cross section of outstanding end face level, the Breadth Maximum in the cross section of the level of this columnar part is roughly the same relative to outstanding end face from the cardinal extremity of jut towards jag, above-mentioned good jut has the shape along with reducing towards jag relative to the Breadth Maximum in the cross section of outstanding end face level, jut is more preferably top fuller shape, polygon hammer shape, top fuller shape is best.

In the first ~ four embodiment, although be formed with 8 juts in 1 base portion, the present invention is not limited to this, and the quantity of jut can consider that the material etc. of jut is suitably determined, both more than 2, less than 7, may also be more than 9, less than 16.

In the first ~ four embodiment, although the outstanding end face side of base portion branches into 4 (that is, being formed with 3 otch), also can consider that the size of base portion is to determine point number of base portion, the outstanding end face side of base portion both can be branched off into 2 ~ 3, also can be branched off into more than 5.But, from making the viewpoint more suitable to the stimulation of gum, being preferably and being branched off into 2 ~ 12, be branched off into 3 ~ 8 better.

In the first ~ four embodiment, although base portion and jut integrally formed, the present invention is not limited to this, and base portion and jut also can be formed separately different piece.

In the first ~ four embodiment, although base portion is branch by otch, but the present invention is not limited to this, such as, elastomeric element 110 is as shown in Figure 5 such, be trapezoidal recessed bar 116 when also can form side-looking on the outstanding end face 113 of base portion 112, thus the outstanding end face 113 side branch of base portion 112.

In addition, herein so-called " recessed bar ", refer to when the side-looking of the outstanding side end face branch of base portion to be trapezoidal gap, the minimum of a value on a side base trapezoidal during side-looking is more than 1.0mm, below 5mm, the minimum of a value on the base of the opposing party is more than 2mm, below 8mm.

But, when to when carrying out clean in oral cavity, produce between the part due to base portion branch and interfere, therefore, give gum from the stimulation of the intensity by appropriateness and improve the viewpoint of massage effect, preferably base portion by otch branch.

In the first embodiment, although respectively arrange 2 to amount to 4 elastomeric elements in the width both sides of head, but the present invention is not limited to this, elastomeric element both respectively can arrange 1 and amount to 2 in the width both sides of head, also respectively can arrange more than 3 in the width both sides of head and amount to more than 6.But give gum from the stimulation of the intensity by appropriateness and improve the viewpoint of massage effect, the quantity of elastomeric element is preferably and amounts to 4 ~ 14, amounts to 4 ~ 10 better.

In addition, the quantity of the quantity being located at the elastomeric element of head width direction one side and the elastomeric element that is located at the opposing party, both can be identical, also can be different.But, from the viewpoint of flexure situation controlling the pieces clipped by elastomeric element more well, the quantity of the quantity being located at the elastomeric element of head width direction one side and the elastomeric element that is located at the opposing party is preferably identical.

In this second embodiment, although respectively arrange 2 to amount to 4 elastomeric elements in the width both sides of head, but the present invention is not limited to this, elastomeric element both respectively can arrange 1 and amount to 2 in the width both sides of head, also respectively can arrange more than 3 and amount to more than 6.But give gum from the stimulation of the intensity by appropriateness and improve the viewpoint of massage effect, the quantity of elastomeric element is preferably and amounts to 4 ~ 14, amounts to 4 ~ 10 better.

In the third embodiment, although be provided with 3 elastomeric elements, the present invention is not limited to this, and the quantity of elastomeric element both 1 ~ 2, may also be more than 4, less than 8.But give gum and the viewpoint improving massage effect from the intensity of appropriateness being stimulated, be preferably 2 ~ 10,3 ~ 8 better.

In the 4th embodiment, although elastomeric element group is formed by 4 elastomeric elements, the present invention is not limited to this, forms the quantity of the elastomeric element of elastomeric element group, both more than 1, may also be less than 3, more than 5, less than 8 again.But give gum from the stimulation of the intensity by appropriateness and improve the viewpoint of massage effect, being preferably 3 ~ 20,4 ~ 10 better.

So, toothbrush of the present invention is a kind of quantity of appropriately combined elastomeric element, size, the quantity of jut and point number etc., the toothbrush of adjustable cleaning effect and massage effect.

For example, referring to Fig. 6 A and Fig. 6 B, the toothbrush being provided with the elastomeric element of more than 3 in the arrangement of head length direction is described.

For the parts identical with the first ~ four embodiment, put on identical symbol, the description thereof will be omitted, is mainly described with the first ~ four embodiment difference.

The toothbrush 400 of Fig. 6 A is respectively provided with 3 elastomeric elements 410 in the width both sides of the head 2 of planting hair side 20, is rectangular flat column when elastomeric element 410 is overlooked, and the length direction of elastomeric element 410 is the extending direction of axes O 1.At three pairs of elastomeric elements 410 that the width of head 2 is relative, all clip the pieces 32 of 2 row × 2 row and arrange.

In addition, as long as have effect of the present invention, also suitably can change the number of the elastomeric element 410 along head length direction spread configuration, such as, also can be arranged to more than 3, less than 10 elastomeric elements.In addition, at the elastomeric element 410 that the width of head 2 is relative, also all can clip the pieces 32 of 1 ~ 3 row × 1 ~ 3 row and arrange.

Pieces 132 is provided with between the elastomeric element 410 arranged along head 2 rectangle.That is, in the width both sides of head 2, be respectively provided with 2 pieces 132, pieces 132 is sandwiched between the elastomeric element 410 that the length direction along head 2 arranges.

In addition, as long as have effect of the present invention, be sandwiched in the pieces 132 between elastomeric element 410 that the length direction along head 2 arranges, also can be set as 3 row ~ 5, row × 2 row × 2 row.

Elastomeric element 410 has: the base portion 412 when overlooking being rectangular flat column; And 4 juts 14 be formed on the outstanding end face 413 of base portion 412, and be formed with 1 from outstanding end face 413 towards the otch 16 of planting hair side 20.

In addition, as long as have effect of the present invention, also the number of jut and the number of otch suitably can be changed, such as, being formed at the number that base portion 412 gives prominence to the jut of end face 413 can be more than 1, less than 4, can be more than 1, less than 3 towards the otch 16 of planting hair side 20.

As the length L1 maximum length of the length direction of base portion 12 (when namely the overlooking) of the base portion 12 of elastomeric element 410, be preferably 1 ~ 7mm, 2 ~ 6mm is better.

In addition, as the width W 1 maximum length of the width of base portion 12 (when namely the overlooking) of the base portion 12 of elastomeric element 410, be preferably 1 ~ 4mm, 2 ~ 3mm is better.

As the beeline between elastomeric element 410 and pieces 32, be preferably 0.2 ~ 1.0mm, 0.3 ~ 0.8mm is better.

Beeline between each elastomeric element 410 pieces 132, both can be all identical, also can be different.As the beeline between elastomeric element 10 and pieces 132, be preferably 0.2 ~ 1.2mm, 0.3 ~ 1.0mm is better.

Implanting is planting the beeline between the adjacent pieces 32 on hair side 20, identical between pieces that both can be whole, also can distinguish difference.As the beeline between pieces, be preferably 0.5 ~ 1.2mm, 0.8 ~ 1.0mm is better.

Embodiment

Below, also the present invention will be described in detail to show embodiment, but the present invention is not limited to record below.

(embodiment 1)

According to the specification that table 1 is recorded, make the toothbrush identical with the toothbrush of Figure 1A and Figure 1B.This toothbrush is, handle body is PP system, and elastomeric element is styrenic elastomer system, and bristle is nylon.The cleaning effect of obtained toothbrush, contact sense and massage effect are evaluated, and to the results are shown in table 1.In addition, in Table 1, the shape of base portion is denoted as into " square column ", the configuration of elastomeric element is denoted as into " both sides each 2 ".

(embodiment 2)

Except making the toothbrush identical with the toothbrush 100 of Fig. 2 A and Fig. 2 B, all the other are made identical with embodiment 1 and obtain toothbrush.The cleaning effect of obtained toothbrush, contact sense and massage effect are evaluated, and to the results are shown in table 1.In addition, in Table 1, the shape of base portion is denoted as into " square column ", the configuration of elastomeric element is denoted as into " both sides each 2 are separated ".

(embodiment 3)

Except making the toothbrush identical with the toothbrush 400 of Fig. 6 A and Fig. 6 B, all the other are made identical with embodiment 1 and obtain toothbrush.The cleaning effect of obtained toothbrush, contact sense and massage effect are evaluated, and to the results are shown in table 1.In addition, in Table 1, the shape of base portion is denoted as into " square column ", the configuration of elastomeric element is denoted as into " both sides each 3 are separated ".

(comparative example 1)

Except making the toothbrush identical with the toothbrush 500 of Fig. 7 A and Fig. 7 B, all the other are made identical with embodiment 1 and obtain toothbrush.Toothbrush 500 implanting has the pieces 32 of 2 row × 8 row, and clips these pieces 32 and be provided with 2 elastomeric elements 510 in the width both sides of head 2.Elastomeric element 510, when overlooking be rectangular flat column base portion 512 outstanding end face on along base portion 512 width arrangement be provided with 2 juts 14, along base portion length direction arrangement be provided with 14 juts 14.In addition, this base portion 512 not branch.

The cleaning effect of obtained toothbrush, contact sense and massage effect are evaluated, and to the results are shown in table 1.In addition, in Table 1, the shape of base portion is denoted as into " square column ", the configuration of elastomeric element is denoted as into " both sides each 1 ".

(comparative example 2)

Except making the toothbrush identical with the toothbrush 550 of Fig. 8 A and Fig. 8 B, all the other are made identical with embodiment 1 and obtain toothbrush.Toothbrush 550 implanting has the pieces 32 of 2 row × 8 row, and clips these pieces 32 and be respectively provided with 2 elastomeric elements 560 in the width both sides of head 2.Elastomeric element 560, when overlooking be rectangular flat column base portion 562 outstanding end face on along base portion 562 width arrangement be provided with 2 juts 14, along base portion length direction arrangement be provided with 6 juts 14.In addition, this base portion 562 not branch.

The cleaning effect of obtained toothbrush, contact sense and massage effect are evaluated, and to the results are shown in table 1.In addition, in Table 1, the shape of base portion is denoted as into " square column ", the configuration of elastomeric element is denoted as into " both sides each 2 ".

(comparative example 3)

Except making the toothbrush identical with the toothbrush 600 of Fig. 9 A and Fig. 9 B, all the other are made identical with embodiment 1 and obtain toothbrush.Toothbrush 600 implanting has the pieces 32 of 2 row × 8 row, and clips these pieces 32 and be respectively provided with 5 elastomeric elements 610 in the width both sides of head 2.Elastomeric element 610 is a kind of parts being formed with 3 juts 14 on the outstanding end face of just cylindric base portion 612.In addition, this base portion 612 not branch.

The cleaning effect of obtained toothbrush, contact sense and massage effect are evaluated, and to the results are shown in table 1.In addition, in Table 1, the shape of base portion is denoted as into " positive cylinder ", the configuration of elastomeric element is denoted as into " both sides each 5 ".

(comparative example 4)

Except making the toothbrush identical with the toothbrush 650 of Figure 10 A and Figure 10 B, all the other are made identical with embodiment 1 and obtain toothbrush.Toothbrush 650 is the toothbrushes elastomeric element 560 of toothbrush 550 (Fig. 8 A and Fig. 8 B) being changed into the elastomeric element 660 not being formed with jut.

(comparative example 5)

Except making the toothbrush identical with the toothbrush 700 of Figure 11 A and Figure 11 B, all the other are made identical with embodiment 1 and obtain toothbrush.Toothbrush 700 is only provided with roughly columned elastomeric element 710 along with the undergauge towards jag planting hair side 20.That is, toothbrush 700 is toothbrushes of planting that hair side 20 is not provided with pieces.

The cleaning effect of obtained toothbrush, contact sense and massage effect are evaluated, and to the results are shown in table 1.In addition, in Table 1, the shape of base portion is denoted as into " positive cylinder ", the configuration of elastomeric element is denoted as into " whole face ".

(comparative example 6)

Except making the toothbrush identical with the toothbrush 750 of Figure 12 A and Figure 12 B, all the other are made identical with embodiment 1 and obtain toothbrush.Toothbrush 750 changes the elastomeric element 610 of toothbrush 600 (Fig. 9 A and Fig. 9 B) into elastomeric element 710.

(evaluation method)

< cleaning effect >

Examiner 10 people cleans in oral cavity with the toothbrush of each example, evaluates with the cleaning effect of following metewand to neck portion now and the flank of tooth.The average mark of examiner 10 people being more than 4.0 points be set to " A ", being more than 3.0 by average mark, be less than 4.0 and be divided into " B ", be more than 2.0 points by average mark, be less than 3.0 and be divided into " C ", is be less than 2.0 to be divided into " D " by average mark.

" metewand "

5 points: have very much the sensation that the dirt of neck portion and the flank of tooth drops;

4 points: have the sensation that the dirt of stronger neck portion and the flank of tooth drops;

3 points: have the sensation that the dirt of neck portion and the flank of tooth drops;

2 points: not too have the sensation that the dirt of neck portion and the flank of tooth drops;

1 point: there is no the sensation that the dirt of neck portion and the flank of tooth drops.

< contact sense >

Examiner 10 people cleans in oral cavity with the toothbrush of each example, with following metewand to evaluating the contact sense of gum now.The average mark of examiner 10 people being more than 4.0 points be set to " A ", being more than 3.0 by average mark, be less than 4.0 and be divided into " B ", be more than 2.0 points by average mark, be less than 3.0 and be divided into " C ", is be less than 2.0 to be divided into " D " by average mark.

" metewand "

5 points: without the pain of gum, contact sense is very good;

4 points: without the pain of gum, contact sense very well;

3 points: without the pain of gum, contact is felt;

2 points: gum feels more weak pain;

1 point: gum feels stronger pain.

< massage effect >

Examiner 10 people cleans in oral cavity with the toothbrush of each example, with following metewand to evaluating the massage feeling of gum now.The average mark of examiner 10 people being more than 4.0 points be set to " A ", being more than 3.0 by average mark, be less than 4.0 and be divided into " B ", be more than 2.0 points by average mark, be less than 3.0 and be divided into " C ", is be less than 2.0 to be divided into " D " by average mark.

" metewand "

5 points: very have massage feeling;

4 points: have stronger massage feeling;

3 points: have massage feeling;

2 points: not too have massage feeling;

1 point: there is no massage feeling.

< overall merit >

By cleaning effect, contact feels and the result of massage effect is classified with following metewand.

" metewand "

A: whole evaluation results is " A " or " B ", and " A " has more than 2;

B: whole evaluation results is " A " or " B ", and " A " has less than 1;

C: whole evaluation results is " A " ~ " C ", and " C " has more than 1;

D: any one in evaluation result is all " D ".

As shown in table 1, apply embodiments of the invention, its overall merit is " B " or " A ".

Wherein, as the embodiment 2 with toothbrush 100 (Fig. 2 A and Fig. 2 B) same size, both its cleaning effect and massage effect are " A ".

On the other hand, the comparative example 1 ~ 3 of the non-branch of base portion, although be formed with jut, overall merit is " C " or " D ".Use the comparative example 4 ~ 6 not being formed with the elastomeric element of jut, its overall merit is " C " or " D ".

From these results, by application the present invention, thus judge effectively to massage gum, and can not cleaning effect be damaged.

Practicality in industry

Adopt toothbrush of the present invention, gum effectively can be massaged due to can not cleaning effect be damaged, therefore be industrially very useful.

Claims

1. a toothbrush, has in the implanting on hair side of planting of head the pieces multiple bristle tuft pricked, it is characterized in that,

The outstanding end face side branch of described base portion.

2. toothbrush as claimed in claim 1, is characterized in that, described base portion, the branch by the otch of planting hair side facing to described from described jag.

3. toothbrush as claimed in claim 1, it is characterized in that, described head has the described elastomeric element of more than 2, less than 12,

Described elastomeric element, at least one party in the width of described head and the length direction of described head upwards, clips described pieces and arranges.

4. toothbrush as claimed in claim 1, is characterized in that, the height of planting on hair side of described elastomeric element, lower than the maximum of planting the height on hair side of described pieces.