CN108778048A

CN108778048A - Toothbrush

Info

Publication number: CN108778048A
Application number: CN201780016029.0A
Authority: CN
Inventors: 金丸直史
Original assignee: Lion Corp
Current assignee: Lion Corp
Priority date: 2016-03-09
Filing date: 2017-03-09
Publication date: 2018-11-09
Anticipated expiration: 2037-03-09
Also published as: KR20180114550A; MY186920A; CN110801097B; JP2018114362A; CN110063567B; SG11201807607XA; SG10202008764QA; SG10202008762YA; TW202130301A; JP6341527B2; CN110063567A; TWI729082B; CN110169647B; TW201731419A; KR102183114B1; KR20180085041A; JP6385023B2; KR20190057425A; JP7149730B2; CN110801097A

Abstract

There is provided that a kind of sweeping forces are better and the superior toothbrush of use feeling.Toothbrush (1), it is characterized in that, has handlebody (10), the handlebody has head (2), the neck (4) for extending to the head (2) setting, the handle portion (6) for extending to the neck (4) setting, it is implanted with pieces on the plant hair side on head (2), the product of the deflection A on the head (2) measured by specific assay method and the deflection B of the neck (4) are 0.8~10.

Description

Toothbrush

Technical field

The present invention relates to toothbrushes.

This application claims the preferential of the Japanese patent application the 2016-045368th based on March 9th, 2016 in Japanese publication Power, and it is hereby incorporated its content.

Background technology

Saprodontia, periodontosis prevention in, by using the intraoral bacterial plaque removing that toothbrush brings to be important.With It is past, remove effect to improve bacterial plaque, it is thus proposed that the scheme of excessively various toothbrushes.For example, the head by making toothbrush Thinning, neck attenuates, and bristle can be made to reach the molar depths (the throat side of molar) that common toothbrush is difficult to reach.Patent document 1, which describes a kind of head, is thinned, the excellent toothbrush of operability in oral cavity.

On the other hand, have in the people of periodontal disease, by using the spot of oral pocket that toothbrush brings to remove or gingival massage It is critically important.The spot of oral pocket is removed or gingival massage, the appropriateness flexure of bristle are necessary, so far, it is thus proposed that mistake The intensive toothbrush of the thinner bristle of diameter or toothbrush using the superfine hair in front end etc..

Existing technical literature

Patent document

Patent document 1：Japanese Patent Laid-Open 7-143914 bulletins

Invention content

The project of Xie Decision [Fa bright Yao]

But in order to improve the sweeping forces of depths for being difficult to the molar reached to common toothbrush etc., if only allowing toothbrush Head it is thinning, then the quality of the folding strength on head or the strength reduction that falls off of pieces, toothbrush reduces.Further, since making head Portion is thinning, so head is easy flexure when using, pieces, which scatters, waits the use feeling of users impaired.Therefore, it is to have that head is thinning Limitation.

In addition, by making bristle flexure become larger, the contact sense to gum is set to become good, to improve use feeling.But if bristle When bending excessive, will produce bristle and enter the entering of oral pocket reduces, and sweeping forces reduce, and hair change of scattering is serious, toothbrush it is resistance to The problems such as long property reduces.

The present invention has been made in view of the above-described circumstances, and an object thereof is to provide sweeping forces, better and use feeling is better Toothbrush.

[means to solve the problem]

The present invention has following structure.

[1] a kind of toothbrush, which is characterized in that have handlebody, the neck that the handlebody has head, extends to head setting Portion and the handle portion for extending to neck setting, are implanted with pieces on the plant hair side on the head, pass through following methods (α) and measure The head deflection A and pass through following methods (β) measure the neck deflection B product (A × B) be 0.8~ 10。

Method (α)：Plant top of the hair side towards vertical direction for making the head, will be between the head and the neck The position on boundary fixed in the state of the handlebody front end height as altitude datum, in the stationary state Under again in the head relative to the long axis direction length for planting hair portion, with the front end in the plant hair portion at a distance of 10 ± 3% position The hammer for setting place's suspention 200g, shift amount of the handlebody front end after 10 seconds in the height from the altitude datum is (single Position is mm) deflection A as the head.

Method (β)：Plant top of the hair side towards vertical direction for making the head, will be between the neck and the handle portion Boundary position fixed in the state of the handlebody front end height as altitude datum, in the fixing shape Under state again in the head relative to the long axis direction length for planting hair portion, the front end with the plant hair portion is at a distance of 50 ± 3% The hammer for suspending 200g at position in midair, by shift amount of the handlebody front end in the height from the altitude datum after 10 seconds The deflection B of (unit mm) as the neck.

[2] according to the toothbrush described in [1], which is characterized in that the product of the deflection A on the head and the deflection B of the neck It is 2~10.

[3] according to the toothbrush described in [1] or [2], which is characterized in that pass through the flexure on the head that following methods (α ') measure The product for measuring the deflection B of A ' and the neck is 2.5~12.

Method (α ')：Make the plant top of the hair side towards vertical direction on the head, will from the head and the neck it Between boundary position rise to the handle portion side deviate 10mm position fixed in the state of the handlebody before The height at end is long relative to the long axis direction for planting hair portion in the head again under the stationary state as altitude datum Degree suspends the hammer of 200g in midair with the front end in the plant hair portion, by the handlebody front end after 10 seconds at 10 ± 3% position Deflection A ' of the shift amount (unit mm) as the head in height from the altitude datum.

[4] a kind of toothbrush, which is characterized in that have handlebody, the neck that the handlebody has head, extends to head setting Portion and the handle portion for extending to neck setting, are implanted with pieces on the plant hair side on the head, pass through following methods (α ') and survey The product of the deflection B of the deflection A ' on the fixed head and the neck measured by following methods (β) is 2.5~12.

[5] according to the toothbrush described in any one of [1]~[4], which is characterized in that the thickness on the head is 2.0~ 4.0mm。

[6] according to the toothbrush described in any one of [1]~[5], which is characterized in that the thickness on the head is 2.0~ 4.0mm, and a side smaller in the minimum widith and minimum thickness of the neck is 3.0~4.5mm.

[7] according to the toothbrush described in [6], which is characterized in that the minimum widith of the neck is 3.0~4.5mm.

[8] toothbrush according to any one of [1]~[7], which is characterized in that constitute the hair front end of the bristle of the pieces Intensity is 1.7~3.0N.

[9] toothbrush according to any one of [1]~[8], which is characterized in that the material of the handlebody is polypropylene tree Fat.

[10] according to the toothbrush described in any one of [1]~[9], which is characterized in that in the method (β), stationary phase for The long axis direction length of the handlebody, with the handlebody front end at a distance of 42.4% position.

[11] according to the toothbrush described in any one of [1]~[3] or [5]~[10], which is characterized in that the deflection A and In the deflection B, A < B.

[12] according to the toothbrush described in any one of [1]~[3] or [5]~[11], which is characterized in that the deflection A and The difference (B-A) of the deflection B meets 1≤()≤4 B-A.

[13] according to the toothbrush described in any one of [1]~[3] or [5]~[12], which is characterized in that the deflection A is 0.5~3.0.

[14] toothbrush according to any one of [1]~[13], which is characterized in that the deflection B is 2.1~5.0.

[15] according to the toothbrush described in any one of [1]~[3] or [5]~[14], which is characterized in that the material of the handlebody Matter is polyacetal resin, and the product of the deflection A on the head and the deflection B of the neck are 2~10, the thickness on the head For 2.0~4.0mm, and a side smaller in the minimum widith and minimum thickness of the neck is 3.0~4.5mm.

[16] toothbrush according to any one of [1]~[15], which is characterized in that be implanted with pieces on the plant hair side on head Mode be flat wire (flat plate) formula plant hair.

[The effect of invention]

The toothbrush of the present invention, sweeping forces are better, and use feeling is better.

Description of the drawings

[Figure 1A] one embodiment of the present invention relates to toothbrush plan view.

[Figure 1B] one embodiment of the present invention relates to toothbrush lateral plan.

[Fig. 2A] illustrates the figure of the assay method of the deflection on head.

[Fig. 2 B] illustrates the figure of the assay method of the deflection on head.

[Fig. 3] illustrates the figure of the assay method of mao front end intensity.

[symbol description]

1 toothbrush

2 heads

4 necks

6 handle portions

10 handlebodys

Specific implementation mode

[the 1st invention]

Hereinafter, in conjunction with Figure 1A and Figure 1B, illustrate the embodiment of the toothbrush of the 1st invention.

The toothbrush 1 of Figure 1A and Figure 1B, have in plan view be approximate quadrangle head 2 and extend to the head 2 setting Neck 4 and extend to the neck 4 setting handle portion 6 (hereinafter, head 2, neck 4 and handle portion 6 are collectively referred to as handlebody 10). On the head 2, it is equipped with and plants hair portion (not shown).

Handlebody 10 is integrally molded so as long ruler-like as a whole, for example, can be obtained by injection moulding using resin as material.

As the material of handlebody, acrylic resin (PP) can be enumerated, polyacetal resin (POM), polystyrene resin (PS), gathered Ethylene terephthalate resin (PET), polybutylene terephthalate (PBT) resin (PBT), acronitrile-butadiene-styrene tree Fat (ABS), polyarylate resin, polycarbonate resin, resin acrylonitrile styrene resin (AS), polyester resin (PCTA) etc..Wherein, base The considerations, preferably PP, POM, PBT such as the angle high in intensity, mouldability is excellent, more preferable PP, POM.In addition, based on can be with lower From the point of view of cost preferably obtains the effect of the present invention, the particularly preferred PP of material of handlebody.

Above-mentioned resin can with a kind be used alone, can also two or more be applied in combination.

The modulus of elasticity in static bending of the material of handlebody, preferably 1200~3000MPa, more preferable 1500~3000MPa.Handlebody If the modulus of elasticity in static bending of material within the above range when, the deflection on head can be set as to suitable value, obtain clear in oral cavity Sweep the raising of power and operability, the raising of the use feeling of user.In addition, the modulus of elasticity in static bending foundation of the material of handlebody JIS K7171 are measured.

In addition, in handlebody 10, part or all of handle portion 6 can be covered by soft resin.By by one of handle portion 6 Divide or all covered with soft resin, to can further improve gripability when user grasps handle portion 6.As described soft Matter resin can be lifted for example, polyolefin elastomer, styrene series elastomer, polyester-based elastomer, polyurethane series thermoplastic elastic The elastomer resins such as body, silicones etc..

The length L1 of handlebody 10 is contemplated that operational Deng Lai Decision are fixed, may be, for example, 150~200mm.

Head 2 is set as：It is length with the length direction of handlebody 10,4 tops are by curve corner cut in plan view The tabular of approximate quadrangle.On one face (planting hair side 20) on head 2, it is formed with multiple plant pores 22.In the plant pore 22 In be implanted with the pieces that bristle is done up, form the plant hair portion for including multi beam pieces.

In addition, in this specification, plan view refers to the meaning of the toothbrush from the plant hair side side on head.With flat with plant hair side 20 Row and the direction to intersect vertically with the length direction of handlebody 10 are wide, are thickness with the direction to intersect vertically with plant hair side 20.Separately Outside, to plant side that hair side 20 is faced as surface, to plant the opposite side for the side that hair side 20 is faced as the back side.

Head 2, in plan view, with from front end 9 towards neck 4, broadening, then prolonged with same widths in the direction of the width It stretches, next narrows in the direction of the width, until its boundary P1 between neck 4.

In present embodiment, boundary P1 is：The curve of the corner cut from neck 4 is formed in the plan view shape on head 2 Terminal, that is, form the changed position of bending direction of the curve of corner cut.That is, the boundary P1 of head and neck is：Plane In head in view from curve or straight line R1, changing the curve to broaden for width, either straight line or variation are width phase The position of same straight line.Two edge that the width for the canted section that the curve or straight line R1 are formed from neck narrows.In addition, Neck is towards handle portion direction and in the case of toothbrush that width broadens in plan view, boundary P1 in plan view with head With the position consistency of the width minimum in neck.

But the position for having such as head and neck the boundary P1 as the toothbrush that same widths are formed sometimes is difficult to Determining situation.In this case, will relative to length L1, with the front end 9 of handlebody 10 at a distance of 17.5% position (for example, In the case that length L1 is 180mm, with the front end 9 of handlebody 10 at a distance of the position of 31.5mm) it is used as boundary P1.

The size on head 2 is contemplated that in oral cavity that operability Deng Lai Decision are fixed.

The maximum width W1 on head 2, if when excessive, operability reduces in oral cavity, if when too small, planting the quantity of the pieces of hair Become very few, sweeping forces are easy impaired.Therefore, width W1 can be such as 5~13mm.

Thickness the T1 preferably 2.0~4.0mm, more preferable 2.0~3.5mm, further preferred 2.5~3.2mm on head 2.Thickness T1 If when more than the lower limiting value, it is easy to ensure that sufficient intensity in head 2.Further, it is easy to be formed in a thickness direction Pore 22 is planted, is easy pieces being securely implanted into pore 22, is easy that pieces is inhibited to fall off.If in addition, thickness T1 is on described When below limit value, operability further increases in the oral cavity of toothbrush 1.Further, bristle can be made to reach the oral cavities such as molar depths Inner edge corner angle, intraoral spot remove effect and further increase.

In addition, in the case of the thickness on head 2 is unfixed, T1 refers to the minimum thickness on head 2.

The length L2 on head 2, if when long, operability is easy impaired in oral cavity, if when too short, the quantity for planting mao mao's beam becomes Must be very few, it cleans effect and is easy to be damaged.Therefore, length L2 can suitably be determined in the range of such as 10~40mm.

The shape for planting pore 22, is not particularly limited, it is more can to enumerate the circles such as positive round or ellipse, triangle or quadrangle etc. Side shape etc..

The quantity for planting pore 22, is not particularly limited, and can be such as 10~60.

The diameter of pore 22 is planted, can be fixed according to the thick thin Decision of required pieces, can be such as 1~3mm.

The arrangement pattern for planting pore 22, is not particularly limited, and can be the arbitrarily arrangement pattern such as so-called checkerboard, staggered.

As the bristle for constituting pieces, can enumerate towards hair front end and bristle (taper hair) that gradually its diameter becomes smaller, The essentially identical bristle of outer diameter (the straight type hair) other than the globular part of hair front end, hair front end are doctor-like, spherical, front end bifurcated The bristle of the shapes such as shape.

As bristle, taper hair is preferred.By making bristle be taper hair, the spot that oral pocket etc. can be improved removes effect. Further, the massage effect of gum improves, and use feeling further increases.

As the material of bristle, can lift for example, the polyamide such as 6-12 nylon, 6-10 nylon, PET, PBT, poly- terephthaldehyde Polyester, the polypropylene such as acid propylene glycol ester (PTT), polyethylene naphthalate (PEN), polybutylene naphthalate (PBN) The synthetic resin materials such as equal polyolefin, olefin-based elastomer, styrene series elastomer.These resin materials can individually be made with a kind With, can also two or more be applied in combination.

In addition, bristle can be the multiple cored structure with core and at least 1 layer or more of sheath portion being arranged on the outside of the core.

The cross-sectional shape of bristle, preferably circular, but it is not limited to circular, it can be set according to the purpose purposes of toothbrush 1 It is set to arbitrary shape.For example, may be set to ellipse, polygon (for example, triangle, quadrangle, pentagon, hexagon etc..), Abnormity (for example, bunge bedstraw herb shape etc. of star, the cloverleaf pattern of three pieces leaf, four leaves) etc..

The thickness of each bristle, is not particularly limited, such as in the case of section is circular, preferably 4~8mil (1mil =1/1000inch=0.025mm).If when more than the lower limiting value, the autonomous property erect improves, and cleaning property further increases, If when below the upper limit value, the bristle rigidity appropriateness of pieces 11, contact feels better.

The bristle for constituting pieces 11, can be with all identical thicknesses, or the bristle of two or more different thicknesses combines.

The staple length of bristle, for instance, it is preferred that adult's used time is 8mm~15mm, children's used time is 6mm~12mm.In addition, From the point of view of usability in oral cavity or use feeling, it is preferable that the diameter of the bristle of selection is smaller, and the staple length of bristle is made to get over It is short.In addition, sense can be swept according to use feeling, brush, clean the purpose of effect, durability, more different bristles of thickness are applied in combination.

Neck 4 connects head 2 and handle portion 6.

In present embodiment, neck 4 is extended, then expanding, Zhi Daoqi from boundary P1 to handle portion 6 with roughly the same diameter With the boundary P2 of handle portion 6.The boundary P2 is：The expanding terminal of neck 4, that is, in plan view, form the portion of broadening The changed position of bending direction of the curve of the terminal of the straight line for two edge being divided to or two edge of the part of formation broadening.Figure 1A In, the boundary P2 of neck and handle portion is：The straight line of two edge of the part to broaden from formation width in neck in plan view Or curve R2 rises, and changes the position of the curve become narrow gradually for width.

But the position for having such as neck and handle portion the boundary P2 as the toothbrush that same widths are formed sometimes is difficult With determining situation.In this case, will relative to length L1, with the front end 9 of handlebody 10 at a distance of 42.2% position (example Such as, in the case that length L1 is 180mm, with the front end 9 of handlebody 10 at a distance of the position of 76.0mm) it is used as boundary P2.

Width the W2 preferably 3.0~4.5mm, more preferable 3.0~4.2mm of neck 4.If width W2 is more than the lower limiting value When, angularly considered it is easy to ensure that sufficient intensity based on folding in neck 4.Further, toothbrush 1 will not become excessively soft It is weak, it is easy to get by moderately bending the good use feeling brought.If in addition, when width W2 is below the upper limit value, toothbrush 1 Operability improves in oral cavity.Further, bristle can be made to reach intraoral side corner angle, intraoral spot removes effect It further increases.

In addition, the width in neck 4 is unfixed, width W2 refers to the minimum widith of neck 4.

Thickness the T2 preferably 3.0~4.5mm, more preferable 3.0~4.2mm of neck 4.If thickness T2 is more than the lower limiting value When, angularly considered it is easy to ensure that sufficient intensity based on folding in neck 4.Further, toothbrush 1 will not become excessively soft It is weak, it is easy to get by moderately bending the good use feeling brought.If in addition, when thickness T2 is below the upper limit value, toothbrush 1 Operability improves in oral cavity.Further, bristle can be made to reach intraoral side corner angle, intraoral spot removes effect It further increases.

In addition, the thickness in neck 4 is unfixed, thickness T2 refers to the minimum thickness of neck 4.

The minimum diameter of neck 4, preferably 3.0~4.5mm, more preferable 3.0~4.2mm.If the minimum diameter of neck 4 is in institute When stating lower limiting value or more, angularly considered it is easy to ensure that sufficient intensity based on folding in neck 4.Further, toothbrush 1 is not It can become excessively weak, be easy to get the good use feeling brought by the flexure of appropriateness.In addition, if the minimum diameter of neck 4 exists When below the upper limit value, operability improves in the oral cavity of toothbrush 1.Further, can make bristle reach it is intraoral while while Angle angle, intraoral spot remove effect and further increase.

In addition, the minimum diameter of neck 4 refers to, the value of a smaller side, the i.e. minimum of neck 4 in above-mentioned width W2 and thickness T2 A smaller side in width and minimum thickness.It is highly preferred that in neck, minimum thickness is identical with minimum widith or minimum widith Smaller than minimum thickness, minimum widith is 3.0~4.5mm.

The length L3 of neck 4, it is contemplated that the length L2 Deng Lai Decision on head are fixed, for example, the length of 30~90mm, more preferable 30 ~60mm.If length L3 is more than above-mentioned lower limiting value, it is easy that bristle is made to reach intraoral side corner angle, intraoral spot Effect is removed to further increase.If length L3 is below above-mentioned upper limit value, operability further increases in the oral cavity of toothbrush 1.

(the deflection A on head 2)

The deflection A on head, by the following method (α) measure.

Method (α)：

Plant top of the hair side towards vertical direction for making head carries out the position on the boundary between the head and neck of toothbrush The height of handlebody front end in the state of fixed is as altitude datum.Further, by the position of the boundary P1 into It has gone in the state of fixing, relative to the long axis direction length for planting hair portion in head, the front end with plant hair portion is at a distance of 10 ± 3% Position at suspend the hammer of 200g in midair, by shift amount of the handlebody front end after 10 seconds in the height from altitude datum, (unit is Mm) as the deflection A on head.

In addition, " the long axis direction length for planting hair portion " refers to, the plant positioned at front end side when head is observed in plan view The front end of pore and positioned at last end side plant pore the distance between rear end.

For example, in plan view the part from head of neck it is of same size in the case of, the neck from the beginning In the part that portion rises, width is measured while slowly changing position towards head, part of same size and width are started Position at the variation of the part to become larger is as boundary P1.In addition, in plan view the part from head of neck width In the case that degree close to head with narrowing, in neck from the part head, slowly change position towards head on one side It sets and measures width on one side, using the position of width minimum as boundary P1.

In the present invention, the deflection A on head 2 is measured according to following.

As shown in Figure 2 A, by toothbrush 1, by make plant hair side 20 upward in a manner of, used at the position (boundary P1) of neck most thin portion Jig 100 is fixed.At this point, using the height of the front end 9 of handlebody 10 as altitude datum H₀。

Then, as shown in Figure 2 B, the hammer 102 of 200g is suspended in midair in the position of S, the height of the front end 9 of the handlebody 10 after measuring 10 seconds Degree highly regard this as H₁.The S is：Relative to plant Mao minister's axis direction, with plant hair portion front end at a distance of 10 ± 3% position. For example, in the case where it is 19mm to plant hair portion, S is with the front end at a distance of the position of 2.0mm.

Next, by H₁And H₀Absolute value of the difference found out as a (unit mm).The measurement such as altimeter can be used in a. It measures and is carried out at 25 ± 3 DEG C of room temperature.

5 said determinations are carried out, using the average value of above-mentioned a as the deflection A on head 2.

Deflection A preferably 0.4~3.0, more preferable 0.4~2.5, further preferred 0.4~2.0.In addition, deflection A is excellent Select 0.5~3.0, more preferable 0.5~2.5, further preferred 0.5~2.0.If deflection A is in the range, head 2 is certainly Body is moderately bent, and shows the softness for planting hair portion on implantation head 2, becomes more good to contact sense, that is, use feeling of gum. If in addition, when deflection A is more than the lower limiting value, use feeling becomes good.If deflection A is below the upper limit value, It is easy to ensure that sufficient intensity in head 2.Further, toothbrush 1 will not become excessively weak, be easy to get in good oral cavity Operability, sweeping forces.

In addition, deflection A can be by adjusting the material (i.e. the material of handlebody 10) on head 2 the modulus of elasticity in static bending or head 2 The adjustment such as thickness, width.

(the deflection B of neck 4)

(β) is measured the deflection B of neck by the following method.

Method (β)：

Plant top of the hair side towards vertical direction for making head, by the position on the boundary between the neck and handle portion of tooth into The height for the handlebody front end gone in the state of fixing is as altitude datum.It is opposite in head again under the stationary state In the long axis direction length for planting hair portion, the hammer of 200g is suspended in midair at 50 ± 3% position with the front end for planting hair portion, after 10 seconds Shift amount (unit mm) deflection B as neck of the handlebody front end in height from the altitude datum.

In the present invention, the deflection B of neck 4, in addition to by 1 fixed position (boundary P1) of toothbrush and being suspended in midair with jig 100 Other than the assay method difference of the deflection A on position S and the head 2 of hammer 102, the deflection A on remaining and head 2 is carried out similarly It measures.

By 1 fixed position of toothbrush it is boundary P2 with jig 100 in the measurement of the deflection B of neck 4.In addition, S is：Relative to The long axis direction length for planting hair portion, and plants position of the hair portion front end at a distance of 50 ± 3%.For example, planting the case where hair portion is 19mm Under, S is with front end at a distance of the position of 9.5mm.

Next, in the same manner as the assay method of the deflection A on head 2, the altitude datum H before suspention hammer 102 is found out₀And suspention Height H of the hammer 102 after 10 seconds₁Absolute value of the difference (unit mm).It measures and is carried out at 25 ± 3 DEG C of room temperature.Carrying out 5 times should It measures, using its average value as the deflection B of neck 4.

Deflection B preferably 2.1~5.0, more preferable 2.3~4.5, further preferred 2.5~4.0.If deflection B is described When range, 4 appropriateness flexure of neck shows appropriate resiliency, it is better to the contact sense of gum to plant hair portion.In addition, scratching If song amount B is more than the lower limiting value, bristle can be made to reach the intraoral side corner angles such as the depths of molar, it is intraoral Sweeping forces further increase.Further, bristle enters the entering raising of oral pocket, and the sweeping forces of oral pocket further carry It is high.If deflection B is below the upper limit value, it is easy to ensure that sufficient intensity in neck 4.Further, toothbrush 1 will not Become excessively weak, is easy to get good use feeling.

In addition, deflection B can be by adjusting the modulus of elasticity in static bending or neck of the material (i.e. the material of handlebody 10) of neck 4 Minimum diameter, boundary P2 cross sectional shape etc. adjust.

The product (A × B) of the deflection B of head deflection A and neck be 0.8~10, preferably 1~10, further preferred 1~ 6, further preferred 1~3.5.In addition, (A × B) preferably 2~10.Head 2 and neck can be obtained if in the range in (A × B) The appropriateness flexure that portion 4 is coordinated.As a result, when making plant hair portion relative to object position (tooth, gum etc.) sliding is cleaned, show The softness and resiliency in hair portion are planted, the contact sense for planting hair portion becomes good.In addition, the lower limiting value of (A × B) is 0.8 or more, preferably 1 More than.Furthermore it is preferred that 2 or more.By allowing (A × B) more than the lower limiting value, appropriate flexure can be obtained, thus to gum Contact sense is good, can obtain the preferable massage effect to gum, and use feeling improves.The upper limit value of (A × B) is 10 hereinafter, it is preferred that 6 Hereinafter, more preferable 3.5 or less.By making (A × B) in the upper limit value hereinafter, can inhibit head 2 and neck 4 is formed by area Domain excessive deflection, operability reduce and sweeping forces reduce.In addition, can inhibit the massage caused by the excessive deflection to gum Effect reduces and user uses weakness when toothbrush 1 to feel.Further, the intensity of toothbrush 1 improves, and durability improves.

The preferred A < B of deflection A and deflection B.If when A < B, the operability of toothbrush 1 further increases.

In addition, preferably 1 or more, preferably 1.5 or more difference (B ﹣ A) of deflection A and deflection B, further preferred 2 or more.(B ﹣ A) If when more than the lower limiting value, relative to head 2, the deflection of neck 4 keeps larger, and resiliency improves, and is connect to gum Sense of touch becomes good, and user is easy to be actually perceived the massage effect to gum.

In addition, (B ﹣ A), preferably 4 hereinafter, more preferable 3 or less.(B ﹣ A) if when below the upper limit value, relative to head 2, neck The deflection in portion 4 will not become too much, and operability is easy to improve in oral cavity.Further, it is easy that user is inhibited to use toothbrush 1 When weak sense.

(B ﹣ A) preferably 1~4, more preferable 1~3.

In addition, the ratio between deflection B and deflection A (B/A) preferably 1.5~5.0, more preferable 1.8~4.8.

(the deflection A ' on head 2)

The deflection A ' on head, by the following method (α ') measure.

Method (α ')：

Plant top of the hair side towards vertical direction for making head, will be from the position on the head in toothbrush and the boundary between neck The height of the handlebody front end in the state of being fixed to the position of handle portion side offset 10mm is played as altitude datum.? Under the stationary state again in head relative to the long axis direction length for planting hair portion, the front end with plant hair portion is at a distance of 10 ± 3% Position at suspend the hammer of 200g in midair, shift amount of the handlebody front end after 10 seconds in the height from the altitude datum is (single Position is mm) deflection A ' as the head.

In the present invention, the deflection A ' on head 2, position (boundary P1) and head 2 in addition to fixing toothbrush 1 with jig 100 Deflection A assay method difference other than, the deflection A on remaining and head 2 is carried out similarly measurement.

In the measurement of the deflection A ' on head 2, the position of toothbrush 1 is fixed with jig 100 is, from boundary P1's on long axis direction Play the position P3 that 10mm is deviated to handle portion side in position.

Next, in the same manner as the assay method of the deflection A on head 2, the altitude datum H before suspention hammer 102 is measured₀With suspention Height H of the hammer 102 after 10 seconds₁Absolute value of the difference (unit mm).It measures and is carried out at 25 ± 3 DEG C of room temperature.Carrying out 5 times should It measures, using its average value as the deflection A ' on head 2.

Deflection A ' preferably 1~5, more preferable 1~4, further preferred 1~3.Deflection A ' if in the range, head Portion 2 itself is moderately bent, and is shown the softness for planting hair portion on implantation head 2, is become more to contact sense, that is, use feeling of gum Well.In addition, deflection A ' is if when more than the lower limiting value, use feeling becomes good.Deflection A ' if the upper limit value with When lower, it is easy to ensure that sufficient intensity in head 2.Further, toothbrush 1 will not become excessively weak, be easy to get good Oral cavity in operability, sweeping forces.

In addition, deflection A ' can be by adjusting the material (i.e. the material of handlebody 10) on head 2 the modulus of elasticity in static bending or head 2 Thickness, width etc. adjust.

The product (A ' × B) preferably 2.5~12, more preferable 3~12 of the deflection A ' on the head and deflection B of neck, into one Step preferably 3~10, further preferred 3~7.(A ' × B) is if when in the range, be easy to get what head 2 and neck 4 were coordinated Appropriateness flexure, thus.When making plant hair portion relative to object position (tooth, gum etc.) sliding is cleaned, show to plant hair portion Soft and resiliency, planting the contact sense in hair portion becomes more good.In addition, (A ' × B) is 2.5 or more, preferably 3 or more.Pass through It allows (A ' × B) more than the lower limiting value, appropriate flexure can be obtained, thus it is better to the contact sense of gum, it obtains opposite In the higher massage effect of gum, use feeling further increases.(A ' × B) is 12 hereinafter, it is preferred that 10 hereinafter, more preferable 7 or less. By allowing (A ' × B) in the upper limit value hereinafter, being easy region transitions flexure, the operability that inhibition is formed by head 2 and neck 4 It reduces and sweeping forces reduces.In addition, can inhibit the massage effect reduction caused by the excessive deflection to gum and user Weak sense when using toothbrush 1.Further, the intensity of toothbrush 1 improves, and durability further increases.

In addition, the ratio between deflection B and deflection A ' (B/A ') preferably 0.8~2.5, more preferable 0.9~2.0.

(the hair front end intensity of bristle)

The hair front end intensity for constituting the bristle of pieces measures as follows.

As measurement device, ISO bristle stiffness and strength testing machines are used.ISO bristles stiffness and strength testing machine 200 shown in Fig. 3 Have：The ladder 204 of reference plane 202 and configuration in reference plane.The ladder 204 has more columned clavas (stainless steel, diameter：3mm).The clava (is spaced 10mm) between claval center at certain intervals in parallel with each other Arrangement.

First, toothbrush 1 is arranged on above-mentioned testing machine 200.At this point, making the preceding end in contact of the bristle on the head 2 of implantation toothbrush 1 The reference plane 202 of above-mentioned testing machine 200.Next, finding out when making head 2 relative to 202 level sliding of the reference plane most Big resistance value, as the hair front end intensity of bristle.The glide direction on head 2 is：The length direction of toothbrush 1 and the clava Length direction perpendicular direction each other.The sliding speed on head 2 is set as 10mm/ points.

Hair the front end intensity preferably 1.7~3.0N, more preferable 1.9~2.8N of bristle.If the hair front end intensity of bristle is in institute When stating in preferred range, the removing power of tartar further increases, and bristle is better to the contact sense of gum, usability into One step improves.

The toothbrush 1 of present embodiment can be manufactured according to the manufacturing method of known toothbrush.For example, being noted in mold Hard resin is penetrated, handlebody 10 is molded.Next, the plant hair side 20 by the way that pieces to be implanted into obtained handlebody 10, obtains Toothbrush 1.As the method for implantation pieces, it can lift for example, by being two by one folding of pieces, the flat wire sandwiched in-between is beaten The flat wire type for entering to plant pore 22 and being implanted into pieces plants hair；The lower end indentation of pieces is become in the molten resin for planting hair portion and solid Fixed hot melt adhesive method；The lower end of pieces is heated, after forming molten mass, injects molten resin in a mold, hair portion will be planted Molding Mo Neifa (in-mold process) etc..

The toothbrush of 1st invention is especially effective when the toothbrush to plant Mao Laizhi mao mao's beam by flat wire type.Using flat wire In the case that formula plants hair, apply to head by squeezing into load caused by flat wire.Therefore, head is thinner, when for force The intensity of deformation becomes lower.In the toothbrush 1 of present embodiment, by making neck hold appropriate flexibility, when can will brush teeth Integrally disperse from head to neck Deng to the power that head applies.It therefore, can be particularly marked degree in the case where flat wire type plants hair Obtain the effect of the present invention.

Particularly, using the low acrylic resin of intensity as the material of handlebody, hair is planted using flat wire type and obtains toothbrush In the case of, the value X of the deflection (A/L2) on the corresponding head of length (L2) on per unit head is set as 0.015~ When 0.045, the value Y of the deflection (B/ (L2+L3)) of the corresponding neck of the sum of length of per unit head and neck (L2+L3) with The ratio between X Y/X are preferably set to 0.8~2.0.The X is preferably set to 0.018~0.45, more preferably it is set as 0.018~ 0.040, at this time Y/X be preferably set to 0.9~2.0, be more preferably set as 0.9~1.9.

In addition, in the case where the polyacetal resin that intensity is high obtains toothbrush as handle material using flat wire type plant hair, The X is being set as 0.027~0.035, when being preferably set to 0.029~0.032, the Y/X is preferably set to 1.0~ 1.4, more preferably it is set as 1.0~1.3.

Illustrate the application method of the toothbrush 1 of present embodiment.

First, handle portion 6 is held.The mode for holding handle portion 6 is not particularly limited, and can be holding, can also be that pen is held Formula.It is cleaned generally, due to while applying pressure to object position, so in any holding mode, all by thumb etc. It touches near the boundary P2 of neck rear end, holds handle portion 6.

Next, by 2 insert port intracavitary of head, one side squeeze grip portion 6 allows plant hair portion sliding on cleaning object position on one side It is dynamic.The power applied to handle portion 6 is transmitted by neck 4 to head 2, is further transmitted from head 2 to hair portion is planted, is planted hair as a result, Portion cleans while to object position application pressure is cleaned.At this moment, due to the deflection B of the deflection A on head and neck it Product (A × B) is 0.8~10, so head and the appropriateness flexure that neck is coordinated can be obtained.As a result, being easy to make implantation toothbrush 1 Head 2 in bristle reach the intraoral side corner angle such as depths of molar, intraoral sweeping forces improve.Further, It is easy that bristle is made to enter oral pocket, the sweeping forces of oral pocket improve.In addition, since appropriateness flexure can be obtained, so plant hair portion Soft and resiliency improves, and plants hair portion and becomes good to the contact sense of gum, can obtain the good massage effect to gum, use Sense improves.

In addition, when the product (A ' × B) of the deflection B of the deflection A ' and neck on head is if 2.5~12, it is easier to further The appropriateness flexure coordinated to head and neck.The sweeping forces of intraoral molar depths or oral pocket etc. further increase as a result, In addition, being easy to get the good massage effect to gum, use feeling further increases.

In addition, head 2 thickness T1 be 2.0~4.0mm, and the minimum diameter of neck 4 be 3.0~4.5mm when, more hold Easily make the bristle in implantation head 2 reach intraoral side corner angle, the intraoral sweeping forces such as molar depths to further increase. Further, the operability of toothbrush 1 further increases.

In addition, when hair front end intensity is if 1.7~3.0N, it is easier to so that bristle is entered oral pocket, the sweeping forces of oral pocket are into one Step improves.Further, better to the contact sense of gum, use feeling further increases.

[the 2nd invention]

The toothbrush of 2nd invention is a kind of toothbrush, which is characterized in that has and is implanted with the head of pieces, extends to head setting Neck and the handle portion for extending to neck setting, the product (A ' × B) of the deflection A ' on head and the deflection B of neck for 2.5~ 12.The toothbrush of 2nd invention is necessary in addition to the product (A ' × B) of the deflection B of the deflection A ' and neck on head is 2.5~12 Other than, mode same with the toothbrush of the 1st invention can be used in remaining, and preferred mode is also identical.

About A ' × B as described in the 1st invention.

In the toothbrush of 2nd invention, due to the deflection A ' and neck on head deflection B product (A ' × B) be 2.5~ 12, so head and the appropriateness flexure that neck is coordinated can be obtained.As a result, being easy to make the bristle in the head of implantation toothbrush to arrive The intraoral side corner such as the depths up to molar angle, intraoral sweeping forces improve.Further, it is easy that bristle is made to enter periodontal The sweeping forces of bag, oral pocket improve.In addition, since appropriate flexure can be obtained, so planting softness and the resiliency raising in hair portion, plant Hair portion becomes good to the contact sense of gum, can obtain the good massage effect to gum, and use feeling improves.

Hereinafter, enumerate embodiment illustrates the present invention in further detail, but the present invention is not limited to these Examples.

The material used in the present embodiment is as described below：

< handlebodys >

POM-1 (the moduluses of elasticity in static bending：2600MPa)

PP-1 (the moduluses of elasticity in static bending：1900MPa)

PP-2 (the moduluses of elasticity in static bending：1400MPa)

< bristles >

·PBT

(Examples 1 to 3, comparative example 1~2)

Make toothbrush same with Figure 1A and Figure 1B.The length L1 of the handlebody of the toothbrush of each example is 180mm, the thickness on head T1, the length L2 on head, the width W1 on head, the minimum diameter T2 of neck, the length L3 of neck, the width of boundary P2, boundary The thickness of P2 is size shown in table 1.On head, does up bristle (being made of PBT) 23 and be used as pieces, by the pieces according to figure The implantation of hair pattern is planted shown in 1A, hair portion is planted in setting.In addition, the length and thickness of the bristle of each example are size shown in table 1.

The material of the toothbrush of each example is as shown in table 1.

In addition, measuring the deflection A on the head of the toothbrush of each example, the deflection B of neck, hair front end intensity according to the method described above (the position of boundary P1：Front end 9 with handlebody 10 is at a distance of the position of 31.5mm, boundary P2：Apart with the front end 9 of handlebody 10 76.0mm)

Deflection A, deflection B, A × B and hair front end intensity of the toothbrush of each example are as shown in table 1.

(embodiment 4~9, comparative example 3~7)

Make toothbrush same with Figure 1A and Figure 1B.The length L1 of the handlebody of the toothbrush of each example be 180mm (embodiment 4~9, Comparative example 3~7), the thickness T1 on head, the length L2 on head, the width W1 on head, the minimum diameter T2 of neck, neck length Spend L3, the width of boundary P2, boundary P2 thickness be size shown in table 2 and table 3.On head, bristle (being made of PBT) is done up 23 are used as pieces, which is implanted into according to plant hair pattern shown in figure 1A, and hair portion is planted in setting.In addition, the bristle of each example Length and thickness are size shown in table 2 and table 3.

The material of the toothbrush of each example is as shown in table 2 and table 3.

In addition, measure according to the method described above the deflection A on the head of the toothbrush of each example, head deflection A ', neck flexure Measure B and hair front end intensity.The position of the boundary P1 of fixed toothbrush and the position of boundary P2 are as described above in the toothbrush of each example Decision is fixed.

3 institute of deflection A, deflection A ', deflection B, A × B, A ' × B and hair front end intensity such as table 2 and table of the toothbrush of each example Show.

In addition, for the toothbrush of each example, sweeping forces, use feeling, operability are evaluated as follows.

Each evaluation result is as shown in table 1~3.

[sweeping forces of molar depths (the throat side of molar)]

The toothbrush cleanout intracavitary of each example of 10 people's experimental groups, by the cleaning effect of the depths of molar at this time according to following evaluations Benchmark evaluation.The average mark of 10 people's experimental groups at 4 points or more be "○", 2 points less than 4 points be " △ ", be less than 2 points For "×".

< evaluation criteria >

5 points：The sense of touch that molar depths spot is fallen can very be experienced.

4 points：Experience the sense of touch that molar depths spot is fallen strongly.

3 points：Experience the sense of touch that molar depths spot is fallen.

2 points：The sense of touch that molar depths spot is fallen can less be experienced.

1 point：It is not felt by the sense of touch that molar depths spot is fallen.

[evaluation of use feeling]

The toothbrush cleanout intracavitary of each example of 10 people's experimental groups, by commented according to following evaluation criteria the contact sense of gum at this moment Valence evaluates the use feeling of toothbrush.The average mark of 10 people's experimental groups at 4 points or more be "○", 2 points less than 4 points for " △ ", it is "×" to be less than 2 points.

< evaluation criteria >

5 points：Not bitterly, contact sense is very excellent for gum.

4 points：Not bitterly, contact sense is very excellent for gum.

3 points：Not bitterly, contact sense is excellent for gum.

2 points：Gum feels faint pain.

1 point：Gum feels strong pain.

[operational in oral cavity]

10 people's experimental group cleanout intracavitary, evaluate the operability of the toothbrush of each example.The evaluation of operability is divided into 1 point~7 Divide this 7 grades, feels operational good, score is higher.By the average mark of 10 people's experimental groups according to following determinating references Classification judges operability in oral cavity.

< determinating references >

○：It is equally divided into 5 points or more.

△：3 points are equally divided into less than 5 points.

×：Average mark is less than 3 points.

[table 1]

[table 2]

[table 3]

As shown in table 1, sweeping forces are excellent in the oral cavity of the toothbrush of embodiment 1,2,3 using the present invention and use feeling is good It is good.Further, operability is excellent in oral cavity.

In contrast, toothbrushes (comparative example 1) of the A × B less than 0.8, A × B ultrasound cross the depths of 10 toothbrush (comparative example 2) to molar Sweeping forces it is insufficient, be also unable to get intraoral excellent operability.

In addition, as shown in table 2, it is excellent using sweeping forces in toothbrush (embodiment 4~9) oral cavity of the present invention, and use feeling Well.Further, operability is excellent in oral cavity.

In contrast, as shown in table 3, A × B is less than toothbrushes (comparative example 3~7) of 0.8 or the A ' × B less than 3 to molar depths Sweeping forces are insufficient at least one in operability in the sweeping forces, use feeling and oral cavity of oral pocket.

Based on result above, it can confirm that sweeping forces are better in the oral cavity using the toothbrush of the present invention, and use feeling is better.

Claims

1. a kind of toothbrush, which is characterized in that have handlebody, the neck that the handlebody has head, extends to head setting Portion and the handle portion for extending to neck setting, are implanted with pieces on the plant hair side on the head,

The deflection A on the head measured by following methods (α) and the neck measured by following methods (β) are scratched The product of song amount B is 0.8~10,

Method (α)：Plant top of the hair side towards vertical direction for making the head, will be between the head and the neck The position on boundary fixed in the state of the handlebody front end height as altitude datum, in the stationary state Under again in the head relative to the long axis direction length for planting hair portion, with the front end in the plant hair portion at a distance of 10 ± 3% position The hammer for setting place's suspention 200g, shift amount of the handlebody front end after 10 seconds in the height from the altitude datum is (single Position is mm) deflection A as the head；

2. toothbrush according to claim 1, which is characterized in that the deflection A on the head and deflection B of the neck Product be 2~10.

3. toothbrush according to claim 1 or 2, which is characterized in that the head measured by following methods (α ') The product of the deflection B of deflection A ' and the neck is 2.5~12,

4. a kind of toothbrush, which is characterized in that have handlebody, the neck that the handlebody has head, extends to head setting Portion and the handle portion for extending to neck setting, are implanted with pieces on the plant hair side on the head,

The deflection A ' on the head measured by following methods (α ') and the neck measured by following methods (β) The product of deflection B is 2.5~12,

Method (α ')：Make the plant top of the hair side towards vertical direction on the head, will from the head and the neck it Between boundary position rise to the handle portion side deviate 10mm position fixed in the state of the handlebody before The height at end is long relative to the long axis direction for planting hair portion in the head again under the stationary state as altitude datum Degree suspends the hammer of 200g in midair with the front end in the plant hair portion, by the handlebody front end after 10 seconds at 10 ± 3% position Deflection A ' of the shift amount (unit mm) as the head in height from the altitude datum；

5. the toothbrush according to any one of Claims 1 to 4, which is characterized in that the thickness on the head be 2.0~ 4.0mm。

6. the toothbrush according to any one of Claims 1 to 5, which is characterized in that the thickness on the head be 2.0~ 4.0mm, and a side smaller in the minimum widith and minimum thickness of the neck is 3.0~4.5mm.

7. toothbrush according to claim 6, which is characterized in that the minimum widith of the neck is 3.0~4.5mm.

8. the toothbrush according to any one of claim 1~7, which is characterized in that constitute the hair of the bristle of the pieces Front end intensity is 1.7~3.0N.

9. the toothbrush according to any one of claim 1~8, which is characterized in that the material of the handlebody is poly- third Olefine resin.