CN108778048B

CN108778048B - Toothbrush

Info

Publication number: CN108778048B
Application number: CN201780016029.0A
Authority: CN
Inventors: 金丸直史
Original assignee: Kao Corp
Current assignee: Kao Corp
Priority date: 2016-03-09
Filing date: 2017-03-09
Publication date: 2019-11-22
Anticipated expiration: 2037-03-09
Also published as: WO2017155033A1; CN110169647A; CN110063567A; JPWO2017155033A1; JP2018114424A; JP2018114362A; TWI770960B; CN110063567B; TWI729082B; KR101970282B1; KR20190057425A; KR20190057427A; CN110801097A; KR102183120B1; TW202130301A; JP6341527B2; SG10202008762YA; SG11201807607XA; CN110801097B; JP6385024B2

Abstract

There is provided that a kind of sweeping forces are more excellent and the superior toothbrush of use feeling.Toothbrush (1), it is characterized in that, have 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 B of the deflection A and neck (4) on the head (2) measured by specific measuring method is 0.8~10.

Description

Toothbrush

Technical field

The present invention relates to toothbrushes.

This application claims the excellent of Japanese patent application the 2016-045368th based on March 9th, 2016 in Japanese publication It first weighs, and is hereby incorporated its content.

Background technique

Saprodontia, periodontosis prevention in, by using the intraoral bacterial plaque removing of toothbrush bring to be important.With It is past, effect is removed in order 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, in the people for having periodontal disease, by using the spot of toothbrush bring oral pocket to remove or gum It massages critically important.The spot of oral pocket is removed or gingival massage, the appropriateness flexure of bristle are necessary, so far, You Renti The intensive toothbrush of the thinner bristle of diameter or the toothbrush using the superfine hair in front end etc. are crossed out.

Existing technical literature

Patent document

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

Summary of the invention

[subject to be solved by the invention]

But in order to improve the sweeping forces for the depths etc. for being difficult to the molar reached to common toothbrush, 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, making the contact sense to gum become good, to improve use feeling by making bristle flexure become larger.But if When bristle flexure is excessive, the entering reduction that bristle enters oral pocket can be generated, sweeping forces reduce, and hair, which scatters, becomes serious, toothbrush Durability reduce the problems such as.

The present invention has been made in view of the above-described circumstances, and an object thereof is to provide sweeping forces, more excellent and use feeling is more excellent 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 handlebody has head, extends to head setting Neck and extend to the handle portion of neck setting, be implanted with pieces on the plant hair side on the head, pass through following methods (α) The deflection A on the head of measurement and by the product (A × B) of deflection B of described neck of following methods (β) measurement it is 0.8~10.

Method (α): making the plant top of the hair side towards vertical direction on the head, by the head and the neck it Between boundary position fixed in the state of the handlebody front end height as altitude datum, in the fixation Under state again in the head relative to the long axis direction length for planting hair portion, with the front end for planting hair portion at a distance of 10 ± 3% Position at suspend in midair 200g hammer, by shift amount of the handlebody front end in the height from the altitude datum after 10 seconds The deflection A of (unit mm) as the head.

Method (β): make the plant top of the hair side towards vertical direction on the head, by the neck and the handle portion Between boundary position fixed in the state of the handlebody front end height as altitude datum, described solid Determine under state again in the head relative to the long axis direction length for planting hair portion, with the front end for planting hair portion at a distance of 50 ± The hammer for suspending 200g at 3% position in midair, by shifting of the handlebody front end in the height from the altitude datum after 10 seconds Deflection B of the position amount (unit mm) as the neck.

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

Method (α '): making the plant top of the hair side towards vertical direction on the head, will be from the head and the neck Play the handle in the state of being fixed to the position of handle portion side offset 10mm in the position on the boundary between portion The height of body front end is as altitude datum, under the stationary state again in the head relative to the long axis direction for planting hair portion Length suspends the hammer of 200g in midair with the front end for planting hair portion, before the handlebody after 10 seconds at 10 ± 3% position Hold deflection A ' of the shift amount (unit mm) in the height from the altitude datum as the head.

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

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

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

[7] toothbrush according to [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 of the bristle of the pieces Front end 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 poly- third Olefine resin.

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

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

[13] toothbrush according to 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 be 2.1~ 5.0。

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

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

[The effect of invention]

Toothbrush of the invention, sweeping forces are more excellent, and use feeling is more excellent.

Detailed description of the invention

[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 measuring method of the deflection on head.

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

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

[symbol description]

1 toothbrush

2 heads

4 necks

6 handle portions

10 handlebodys

Specific embodiment

[the 1st invention]

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

The toothbrush 1 of Figure 1A and Figure 1B, have be in plan view approximate quadrangle head 2 and extend to the head 2 The neck 4 of setting 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 using resin as material by injection moulding.

As the material of handlebody, acrylic resin (PP), polyacetal resin (POM), polystyrene resin can be enumerated (PS), polyethylene terephthalate resin (PET), polybutylene terephthalate (PBT) resin (PBT), acrylonitrile butadiene benzene Vinyl (ABS), polyarylate resin, polycarbonate resin, resin acrylonitrile styrene resin (AS), polyester resin (PCTA) etc.. Wherein, the consideration such as angle high based on intensity, mouldability is excellent, preferably PP, POM, PBT, more preferable PP, POM.In addition, being based on Can with more it is inexpensive preferably obtain effect of the invention from the point of view of, the particularly preferred PP of the material of handlebody.

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

The bending elastic modulus of the material of handlebody, preferably 1200~3000MPa, more preferable 1500~3000MPa.Handle If the bending elastic modulus of the material of body within the above range when, the deflection on head can be set as to suitable value, obtain oral cavity Interior sweeping forces and operational raising, the raising of the use feeling of user.In addition, the bending elastic modulus of the material of handlebody according to It is measured according to JIS K7171.

In addition, part or all of handle portion 6 can be covered by soft resin in handlebody 10.By by handle portion 6 Part or all is covered with soft resin, to can further improve gripability when user grasps handle portion 6.As institute Soft resin is stated, can be lifted for example, polyolefin elastomer, styrene series elastomer, polyester-based elastomer, polyurethane series thermoplasticity The elastomer resins such as elastomer, silicone resin etc..

The length L1 of handlebody 10 is contemplated that operability etc. to determine, may be, for example, 150~200mm.

Head 2 is set are as follows: with the length direction of handlebody 10 to grow, 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, formed include multi beam pieces plant hair portion.

In addition, plan view refers to the meaning of the toothbrush from the plant hair side side on head in this specification.With with plant hair side 20 directions that are parallel and intersecting vertically with the length direction of handlebody 10 are width, are with the direction to intersect vertically with plant hair side 20 It is thick.In addition, 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 being broadened in the direction of the width from front end 9 towards neck 4, then with identical width Degree extends, and next narrows in the direction of the width, until its boundary P1 between neck 4.

In present embodiment, boundary P1 are as follows: 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 on head and neck are as follows: plane In head in view from curve or straight line R1, changing the curve to broaden for width, perhaps 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, In Neck is towards handle portion direction and in the case where toothbrush that width broadens in plan view, boundary P1 in plan view with head With the smallest position consistency of width in neck.

But the position of such as head and neck the boundary P1 as the toothbrush that same widths are formed are had sometimes It 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 (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 31.5mm) it is used as boundary P1.

The size on head 2 is contemplated that in oral cavity operability etc. to determine.

The maximum width W1 on head 2, if when excessive, operability is reduced in oral cavity, if when too small, planting the pieces of hair Quantity becomes very few, and 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.It is thick If spend T1 more than the lower limit value, it is easy to ensure that sufficient intensity in head 2.Further, it is easy in a thickness direction It is formed and plants pore 22, be easy for pieces to be securely implanted into pore 22, be easy that pieces is inhibited to fall off.In addition, if thickness T1 is in institute When stating upper limit value or less, operability is further increased in the oral cavity of toothbrush 1.Further, bristle can be made to reach molar depths etc. Oral cavity inner edge corner angle, intraoral spot remove effect and further increase.

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

The length L2 on head 2, if when too long, operability is easy impaired in oral cavity, if when too short, planting the number of mao mao's beam Amount becomes very few, 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 for planting pore 22, can determine according to the thickness of required pieces, can be such as 1~3mm.

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

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 taper hair, the spot that oral pocket etc. can be improved removes effect Fruit.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 The polyester, 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 be applied in combination with two or more.

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

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, star, the cloverleaf pattern of three pieces leaf, bunge bedstraw herb shape of four leaves etc.) etc..

The thickness of each bristle, is not particularly limited, for example, section be round situation in, preferably 4~8mil (1mil =1/1000inch=0.025mm).If when more than the lower limit value, the autonomous property erect is improved, 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 pack of two or more different thicknesses It closes.

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, gets over the staple length of bristle 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 from boundary P1 to handle portion 6 with roughly the same diameter, then expanding, directly To the boundary P2 of itself and handle portion 6.The boundary P2 are as follows: the expanding terminal of neck 4, that is, in plan view, form broadening Part two edge straight line terminal or formed broadening part two edge curve the changed position of bending direction. In Figure 1A, the boundary P2 of neck and handle portion is: two edge of the part to broaden in neck from formation width in plan view Straight line or curve R2 rise, and change the position of the curve become narrow gradually for width.

But the position of such as neck and handle portion the boundary P2 as the toothbrush that same widths are formed are had sometimes It sets and 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 42.2% 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 76.0mm) 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 limit value When, angularly considered based on folding it is easy to ensure that sufficient intensity 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 of bring.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, width W2 refers to the minimum widith of neck 4 in the unfixed situation of width 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 limit value When, angularly considered based on folding it is easy to ensure that sufficient intensity 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 of bring.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, thickness T2 refers to the minimum thickness of neck 4 in the unfixed situation of 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 limit value or more, angularly considered based on folding it is easy to ensure that sufficient intensity in neck 4.Further, toothbrush 1 is not It can become excessively weak, be easy to get by the good use feeling of flexure bring of appropriateness.In addition, if the minimum diameter of neck 4 exists When below the upper limit value, operability is improved 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 lesser side in above-mentioned width W2 and thickness T2, i.e. neck 4 A smaller side in minimum widith and minimum thickness.It is highly preferred that minimum thickness is identical or minimum with minimum widith in neck Width is smaller than minimum thickness, and minimum widith is 3.0~4.5mm.

The length L3 of neck 4, it is contemplated that the length L2 on head etc. is determined, for example, the length of 30~90mm, more preferable 30 ~60mm.If length L3 is more than above-mentioned lower limit 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 is further increased in the oral cavity of toothbrush 1.

(the deflection A on head 2)

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

Method (α):

Plant top of the hair side towards vertical direction for making head, by the position on the boundary between the head and neck of toothbrush The height of handlebody front end in the state of being fixed is as altitude datum.Further, by the position of the boundary P1 It sets in the state of being fixed, 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 The hammer for suspending 200g at ± 3% position in midair, shift amount of the handlebody front end after 10 seconds in the height from altitude datum is (single Deflection A of the position for mm) as head.

In addition, " the long axis direction length for planting hair portion " refers to, it is located at front end side when observing head in plan view Plant pore front end 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 where, in the neck From the part head, width is measured while slowly changing position towards head, by part of same size and width Start the position at the variation of the part to become larger as boundary P1.In addition, in plan view neck the part from head Width with narrowing close to head in the case where, in neck from the part head, slowly change towards head on one side Displacement is set measures width on one side, using the smallest position of width as boundary P1.

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

As shown in Figure 2 A, by toothbrush 1, in a manner of making to plant hair side 20 upward, in the position (boundary P1) of neck most thin portion Place's 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 front end 9 of the handlebody 10 after the hammer 102 of the position of S suspention 200g, measurement 10 seconds Height, highly regard this as H₁.The S is: relative to Mao minister axis direction is planted, with plant hair portion front end at a distance of 10 ± 3% Position.For example, S is with the front end at a distance of the position of 2.0mm in the case where planting hair portion is 19mm.

Next, by H₁And H₀Absolute value of the difference found out as a (unit mm).The a is available to be surveyed such as altimeter It is fixed.Measurement carries 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 in the plant hair portion on implantation head 2, becomes more good to contact sense, that is, use feeling of gum. If in addition, use feeling becomes good when deflection A is more than the lower limit value.If deflection A is below the upper limit value, In 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 bending elastic modulus or head of the material (i.e. the material of handlebody 10) on head 2 The adjustment such as thickness, the width in portion 2.

(the deflection B of neck 4)

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

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 The height of the handlebody front end in the state of being fixed is set as altitude datum.Under the stationary state again in head Relative to 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, by 10 Deflection B of shift amount (unit mm) of the handlebody front end in the height from the altitude datum as neck after second.

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

It is boundary P2 with the position that jig 100 fixes toothbrush 1 in the measurement of the deflection B of neck 4.In addition, S is: phase For plant hair portion long axis direction length, with plant hair portion front end at a distance of 50 ± 3% position.For example, being 19mm's planting hair portion In the case of, S is with front end at a distance of the position of 9.5mm.

Next, the altitude datum H in the same manner as the measuring method of the deflection A on head 2, before finding out suspention hammer 102₀With Height H of the suspention hammer 102 after 10 seconds₁Absolute value of the difference (unit mm).Measurement carries out at 25 ± 3 DEG C of room temperature.Carry out 5 Secondary measurement, 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 limit 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, the entering that bristle enters oral pocket improves, and the sweeping forces of oral pocket further mention 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 bending elastic modulus or neck of the material (i.e. the material of handlebody 10) of neck 4 The minimum diameter in portion, 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 to 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 limit 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 limit 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 as 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 the operability of toothbrush 1 further increases when A < B.

In addition, the difference (B ﹣ A) preferably 1 or more, preferably 1.5 or more, further preferred 2 or more of deflection A and deflection B. (B ﹣ A) is if when more than the lower limit value, relative to head 2, the deflection of neck 4 keeps larger, and resiliency improves, to gum Contact sense become good, 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, the deflection of neck 4 will not become excessive, and operability is easy to improve in oral cavity.Further, it is easy that user is inhibited to use Weak sense when toothbrush 1.

(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, (α ') is measured by the following method.

Method (α '):

Plant top of the hair side towards vertical direction for making head, will be from 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 benchmark height in position Degree.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 The hammer for suspending 200g at ± 3% position in midair, by displacement of the handlebody front end in the height from the altitude datum after 10 seconds Measure the deflection A ' of (unit mm) as the head.

In the present invention, the deflection A ' on head 2, in addition to the position (boundary P1) and head 2 with the fixed toothbrush 1 of jig 100 Deflection A measuring method it is different 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 with the fixed toothbrush 1 of jig 100 is, from boundary on long axis direction Play the position P3 to handle portion side offset 10mm in the position of P1.

Next, the altitude datum H in the same manner as the measuring method of the deflection A on head 2, before measurement suspention hammer 102₀With Height H of the suspention hammer 102 after 10 seconds₁Absolute value of the difference (unit mm).Measurement carries out at 25 ± 3 DEG C of room temperature.Carry out 5 Secondary measurement, 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 in the plant 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 limit 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 by adjusting the material (i.e. the material of handlebody 10) on head 2 bending elastic modulus or Thickness, the width on head 2 etc. adjust.

The product (A ' × B) preferably 2.5~12, more preferable 3~12 of the deflection B of the deflection A ' and neck on head, 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 to plant hair portion relative to object position (tooth, gum etc.) sliding is cleaned, show to plant hair portion Soft and resiliency, the contact sense for planting hair portion become 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 limit 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 is further increased.(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 the region transitions for inhibiting to be formed by head 2 and neck 4 flexure, operability It reduces and sweeping forces reduces.In addition, can inhibit as caused by the excessive deflection to the massage effect reduction of 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 machine is used.ISO bristle stiffness and strength testing machine shown in Fig. 3 200 have: the ladder 204 of datum level 202 and configuration on datum level.The ladder 204 has more columned sticks Shape body (stainless steel, diameter: 3mm).The clava (is spaced between claval center at certain intervals in parallel with each other 10mm) arrange.

Firstly, being arranged toothbrush 1 on above-mentioned testing machine 200.At this point, making the front end for being implanted into the bristle on the head 2 of toothbrush 1 Contact the datum level 202 of above-mentioned testing machine 200.Next, finding out when making horizontal relative to the datum level 202 sliding in head 2 Maximum value, as the hair front end intensity of bristle.The glide direction on head 2 is: the length direction of toothbrush 1 and the stick The length direction of shape body 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 is further increased, 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 infused in mold Hard resin is penetrated, handlebody 10 is formed.Next, being obtained by the plant hair side 20 that pieces is implanted into obtained handlebody 10 Toothbrush 1.As the method for implantation pieces, can lift for example, being beaten the flat wire sandwiched in-between by being two by one folding of pieces 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 In the case that horizontal line formula plants hair, apply to head as squeezing into load brought by flat wire.Therefore, head is thinner, for force When the intensity of deformation become lower.In the toothbrush 1 of present embodiment, by making neck hold appropriate flexibility, it can will brush Integrally disperse to the power that head applies from head to neck when tooth etc..Therefore, it in the case where flat wire type plants hair, can especially show It lands to obtain effect of the invention.

Particularly, using the low acrylic resin of intensity as the material of handlebody, hair is planted using flat wire type and obtains tooth In the case where brush, 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 is 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, Y/X is preferably set to 0.9~2.0 at this time, is more preferably set as 0.9~1.9.

In addition, planting hair using the high polyacetal resin of intensity as handle material using flat wire type and obtaining the feelings of toothbrush Under condition, 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.

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

Next, 2 insert port of head is intracavitary, one side squeeze grip portion 6, allows plant hair portion on cleaning object position on one side Sliding.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 as a result, Hair portion cleans while to object position application pressure is cleaned.At this moment, due to the deflection A on the head and deflection B of neck Product (A × B) be 0.8~10, so the appropriateness flexure that head and neck are coordinated can be obtained.As a result, being easy to make to be implanted into tooth Bristle in the head 2 of brush 1 reaches the intraoral side corner angles such as the depths of molar, and intraoral sweeping forces improve.Further Ground is easy that bristle is made to enter oral pocket, and the sweeping forces of oral pocket improve.In addition, since appropriateness flexure can be obtained, so plant hair portion Softness and resiliency improve, plant hair portion and good become to the contact sense of gum, can obtain making the good massage effect of gum It is improved with sense.

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 into one The appropriateness flexure that step obtains head and neck is coordinated.The sweeping forces of intraoral molar depths or oral pocket etc. are further as a result, It improves, in addition, being easy to get the good massage effect to gum, use feeling is further increased.

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 being implanted into 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 bristle be made to enter oral pocket, the sweeping forces of oral pocket It further increases.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 and set The neck set and the handle portion for extending to neck setting, the product (A ' × B) of the deflection B of the deflection A ' and neck on head are 2.5~12.The toothbrush of 2nd invention, in addition to the product (A ' × B) of the deflection B of the deflection A ' and neck on head is for 2.5~12 Other than necessary, mode same with the toothbrush of the 1st invention is 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 arrive the bristle in the head for being implanted into toothbrush 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, so planting the softness and resiliency raising in hair portion, being planted since appropriate flexure can be obtained 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.

Material used in the present embodiment is as described below:

< handlebody >

POM-1 (bending elastic modulus: 2600MPa)

PP-1 (bending elastic modulus: 1900MPa)

PP-2 (bending elastic modulus: 1400MPa)

< bristle >

·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 Spend 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, side Boundary P2 with a thickness of size shown in table 1.On head, do up bristle (being made of PBT) 23 as pieces, by the pieces according to Hair portion is planted in plant hair pattern implantation shown in figure 1A, 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, it is strong to measure the deflection A on the head of the toothbrush of each example, the deflection B of neck, hair front end according to the method described above (position of boundary P1: the front end 9 with handlebody 10 is at a distance of the position of 31.5mm, boundary P2: 9 phase of front end with handlebody 10 for degree Away from 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 is 180mm (embodiment 4 ~9, comparative example 3~7), the thickness T1 on head, the length L2 on head, the width W1 on head, neck minimum diameter T2, neck Length L3, the width of boundary P2, boundary P2 with a thickness of size shown in table 2 and table 3.On head, bristle is done up (by PBT Be made) 23 pieces the pieces be implanted into according to plants hair pattern shown in figure 1A as pieces, plant hair portion is set.In addition, the brush of each example The length and thickness of hair 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, measuring the deflection A on the head of the toothbrush of each example, the deflection A ' on head, neck according to the method described above Deflection B and hair front end intensity.The position of the boundary P1 of fixed toothbrush and the position of boundary P2 are such as above-mentioned in the toothbrush of each example It determines like that.

Deflection A, deflection A ', deflection B, A × B, A ' × B and hair the front end intensity such as table 2 and table 3 of the toothbrush of each example It is shown.

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

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

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

The toothbrush cleanout of each example of 10 people's experimental groups is intracavitary, by the cleaning effect of the depths of molar at this time according to following Evaluation criteria evaluation.The average mark of 10 people's experimental groups more than and less than 4 points is " △ " at 2 points, less than 2 the above are "○" at 4 points It is divided into "×".

< evaluation criteria >

5 points: can very experience the sense of touch that molar depths spot is fallen.

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

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

2 points: can less experience the sense of touch that molar depths spot is fallen.

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

[evaluation of use feeling]

The toothbrush cleanout of each example of 10 people's experimental groups is intracavitary, by the contact sense to gum at this moment according to following evaluation bases Quasi- evaluation, evaluates the use feeling of toothbrush.The above are "○" at 4 points for the average mark of 10 people's experimental groups, at 2 points more than and less than 4 points It is "×" less than 2 points for " △ ".

< 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 cleanouts are intracavitary, evaluate the operability of the toothbrush of each example.The evaluation of operability is divided into 1 point ~7 points of this 7 grades feel operational good, and score is higher.By the average mark of 10 people's experimental groups according to following judgement bases Quasi- classification determines operability in oral cavity.

< determinating reference >

Zero: being equally divided into 5 points or more.

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

×: average mark is less than 3 points.

[table 1]

[table 2]

[table 3]

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

In contrast, toothbrush (comparative example 1), A × B ultrasound of the A × B less than 0.8 cross 10 toothbrush (comparative example 2) to molar The sweeping forces of depths are insufficient, are 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 invention, and use feeling Well.Further, operability is excellent in oral cavity.

In contrast, as shown in table 3, the toothbrush (comparative example 3~7) that A × B is less than 0.8 or A ' × B is less than 3 is to molar depth The sweeping forces at place 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 more excellent in the oral cavity using toothbrush of the invention, and use feeling is more excellent It is different.

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 by following methods (α) measurement and scratching by following methods (β) neck measured The product of song amount B is 0.8~10,

Method (α): making the plant top of the hair side towards vertical direction on 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 plant hair portion long axis direction length, with it is described plant hair portion front end at a distance of 10 ± 3% position Set place suspention 200g hammer, using shift amount of the handlebody front end in the height from the altitude datum after 10 seconds as The deflection A on the head, the unit of the shift amount are mm；

Method (β): making the plant top of the hair side towards vertical direction on 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, with the front end for planting hair portion at a distance of 50 ± 3% The hammer for suspending 200g at position in midair makees shift amount of the handlebody front end after 10 seconds in the height from the altitude datum For the deflection B of the neck, the unit of the shift amount is mm.

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 pass through the described head measured following methods (α ') The product of the deflection B of deflection A ' and the neck is 2.5~12,

Method (α '): making 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 offset 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 for planting hair portion, by the handlebody front end after 10 seconds at 10 ± 3% position Deflection A ' of the shift amount in height as the head from the altitude datum, the unit of the shift amount are mm.

4. toothbrush according to claim 1 or 2, which is characterized in that the head with a thickness of 2.0~4.0mm.

5. toothbrush according to claim 4, which is characterized in that lesser in the minimum widith and minimum thickness of the neck One side is 3.0~4.5mm.

6. toothbrush according to claim 5, which is characterized in that the minimum widith of the neck is 3.0~4.5mm.

7. toothbrush according to claim 1 or 2, which is characterized in that the hair front end intensity for constituting the bristle of the pieces is 1.7~3.0N.

8. toothbrush according to claim 1 or 2, which is characterized in that the material of the handlebody is acrylic resin.

9. 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,

Deflection A ' by described head of following methods (α ') measurement and described neck by following methods (β) measurement The product of deflection B is 2.5~12,

Method (α '): making 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 offset 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 for planting hair portion, by the handlebody front end after 10 seconds at 10 ± 3% position Deflection A ' of the shift amount in height as the head from the altitude datum, the unit of the shift amount are mm；

10. toothbrush according to claim 9, which is characterized in that the head with a thickness of 2.0~4.0mm.

11. toothbrush according to claim 10, which is characterized in that smaller in the minimum widith and minimum thickness of the neck A side be 3.0~4.5mm.

12. toothbrush according to claim 11, which is characterized in that the minimum widith of the neck is 3.0~4.5mm.

13. the toothbrush according to any one of claim 9~12, which is characterized in that constitute the bristle of the pieces Hair front end intensity is 1.7~3.0N.

14. the toothbrush according to any one of claim 9~12, which is characterized in that the material of the handlebody is poly- Allyl resin.