CN103391730B

CN103391730B - Toothbrush

Info

Publication number: CN103391730B
Application number: CN201280010370.2A
Authority: CN
Inventors: 奥田靖
Original assignee: Lion Corp
Current assignee: Lion Corp
Priority date: 2011-02-25
Filing date: 2012-02-20
Publication date: 2015-11-25
Anticipated expiration: 2032-02-20
Also published as: JP5948019B2; CN103391730A; JP2012176084A; WO2012115035A1; KR20140009292A

Abstract

There is provided a kind of toothbrush, this toothbrush can clean between cog portion, the occlusal surface of tooth neck and molar and the flank of tooth well.This toothbrush (1) plants in brushhead (2) pieces tied up by the bristle of more than 2 that the upper implanting of hair side (20) has more than 2, has: the first pieces group (30) planting first pieces (32) of more than 1; Open to the top orientation of described brushhead (1) or proximal direction and plant the second pieces group (40) of the second pieces (42) with surrounding the first pieces group (30), the length of described first pieces (32) is shorter than the length of described second pieces (42), and the buckling strength of described first pieces (32) is lower than the buckling strength of described second pieces (42).

Description

Toothbrush

Technical field

The present invention relates to a kind of toothbrush.

The 2011-040060 Patent Application claims priority that the application applied in Japan based on February 25th, 2011, quotes its content here.

Background technology

The easy position (easily producing the position of corrosion) producing decayed tooth is considered to molar, between cog portion, tooth neck.For clean molar, pay attention to applying larger pressure to occlusal surface and the flank of tooth, so be suitable for, there is high rigidity and highdensity pieces.On the other hand, for clean between cog portion, tooth neck, pay attention to pieces being inserted the narrow and small position such as between cog or oral pocket and soft sense of touch, so be suitable for the carefully low pieces of rigidity.So, be applicable to clean molar, between cog portion, tooth neck the specification of toothbrush different, so in order to suitably these positions clean, need to use the toothbrush with the pieces being applicable to these positions respectively.

In order to a toothbrush suitably clean molar, between cog portion, tooth neck, use the bristle being combined with different-diameter or pieces all the time or be combined with the toothbrush of pieces of different staple length.

Such toothbrush is generally: the pieces entering between cog or tooth neck is formed with long and soft bristle; The clean occlusal surface of molar and the pieces of the flank of tooth are formed with short and hard bristle.

Such as, propose there is a kind of toothbrush in patent document 1, the pieces that the bristle that it is not acute taper shape that the tip side in its toothbrush head portion and/or rear end side implantation have by top is formed, the pieces that the bristle that it is acute taper shape that the implantation of other parts has by top is formed.

In addition, propose there is a kind of toothbrush in patent document 2, this toothbrush has: be configured to be U-shaped and two heavy caliber pieces side by side in the front end near brushhead along the periphery of planting hair side; With the small-bore pieces of backend arrangement near brushhead, the front of planting the periphery of mao scope being enclosed in heavy caliber pieces plant territory, hair-fields plant gross density than the front of planting the periphery of mao scope being enclosed in small-bore pieces plant territory, hair-fields to plant gross density large.

Propose there is a kind of toothbrush in patent document 3, it is made up of long brush hairs more than certain length and the short bristles below certain length, and the diameter of at least tip side of long brush hairs is formed as less than the diameter of short bristles.

Propose there is a kind of toothbrush in patent document 4, the central portion implanting face at brush arranges whisk broom, around described whisk broom, arrange long brush, and brush entirety is in spill.

Prior art document

Patent document 1: Japanese Unexamined Patent Publication 11-169232 publication

Patent document 2: Japanese Unexamined Patent Publication 2007-229065 publication

Patent document 3: Japanese Unexamined Patent Publication 7-143915 publication

Patent document 4: Japanese Unexamined Patent Publication 2000-308523 publication

Invent problem to be solved

But, in the technology of patent document 1 ~ 4, also fail to meet between cog portion, tooth neck and the occlusal surface of molar and the clean of the flank of tooth.

Summary of the invention

Therefore, the object of this invention is to provide and a kind ofly can clean between cog portion, tooth neck and the occlusal surface of molar and the toothbrush of the flank of tooth well.

For solving the means of problem

A kind of toothbrush, has the pieces of more than 2 in the implanting on hair side of planting of brushhead, and described pieces is tied up by the bristle of more than 2 and formed, and this toothbrush has: the first pieces group planting first pieces of more than 1; And open to the top orientation of described brushhead or proximal direction and plant the second pieces group of the second pieces with surrounding described first pieces group, the top of described first pieces is lower than the top of described second pieces, the buckling strength of described first pieces is lower than the buckling strength of described second pieces, plants the 3rd pieces having top higher than the top of described second pieces in the outside of described second pieces group.

Hair top that described first pieces has the bristle bristle by sharpening, and the diameter of this bristle reduces towards the top of bristle to plant hair side gradually as the position of more than 0mm below the 5mm of starting point.

Described second pieces group is only formed near the top of described brushhead.

Hair top that described 3rd pieces has the bristle bristle by sharpening, and the diameter of this bristle reduces towards the top of bristle to plant hair side gradually as the position of more than 0mm below the 5mm of starting point.

Described second pieces is made up of the bristle of the non-sharpening in hair top.

The top of diameter to bristle from planting hair side of described second pieces is identical.

The top of the bristle of described second pieces is the plane parallel with planting hair side.

The top of the bristle of described second pieces is rounded at hemispherical.

The staple length difference of the length of described second pieces and the length of described first pieces is more than 0.3mm below 3mm.

The buckling strength ratio being expressed as [(buckling strength of described first pieces)/(buckling strength of described second pieces)] is less than more than 0.4 0.9.

The staple length difference of the length of described 3rd pieces and the length of described second pieces is more than 0.2mm below 1.5mm.

The buckling strength ratio being expressed as [(buckling strength of the pieces of the 3rd pieces)/(buckling strength of the second pieces)] is less than more than 0.4 0.9.

Described second pieces mass-planting be located at from brushhead top to the length of brushhead cardinal extremity more than 0% and less than 50% plant territory, hair-fields.

Invention effect

According to toothbrush of the present invention, have: the first pieces group planting first pieces of more than 1; And open to the top orientation of brushhead or proximal direction and plant the second pieces group of the second pieces with surrounding described first pieces group, the length of described first pieces is shorter than the length of described second pieces, the buckling strength of described first pieces is lower than the buckling strength of described second pieces, so can clean between cog portion, the occlusal surface of tooth neck and molar and the flank of tooth well.

According to toothbrush of the present invention, because described first pieces its diameter of top orientation had towards bristle reduces and the bristle of hair top by sharpening, gradually so can clean between cog portion, tooth neck more well.

According to toothbrush of the present invention, because described second pieces group is only formed near the top of described brushhead, so occlusal surface and the flank of tooth of molar can be cleaned more well.

According to toothbrush of the present invention, outside described second pieces group, implanting has three pieces longer than the length of described second pieces, described 3rd pieces its diameter of top orientation had towards bristle reduces and the bristle of hair top by sharpening gradually, so can clean between cog portion, tooth neck more well.

According to toothbrush of the present invention, because described second pieces is the bristle of the non-sharpening of high-quality green tea, that is, identical to its diameter of the top of bristle from planting hair side, so occlusal surface and the flank of tooth of molar can be cleaned more well.Here, referring to its diameter of the top of bristle is identical from planting hair side, the diameter of the horizontal cross-section of each bristle of described second pieces, from planting hair side in the whichever horizontal cross-section on the top of bristle, is identical substantially.Substantially the samely to refer to, due to the reason of machining accuracy etc., allow the deviation within ± 10%.

Accompanying drawing explanation

Figure 1A is the top view of the toothbrush that the first embodiment of the present invention relates to.

Figure 1B is the side view of the toothbrush that the first embodiment of the present invention relates to.

Fig. 2 A is the top view of the toothbrush that the second embodiment of the present invention relates to.

Fig. 2 B is the side view of the toothbrush that the second embodiment of the present invention relates to.

Fig. 3 A is the top view of the toothbrush that the 3rd embodiment of the present invention relates to.

Fig. 3 B is the side view of the toothbrush that the 3rd embodiment of the present invention relates to.

Fig. 4 A is the top view of the toothbrush that the 4th embodiment of the present invention relates to.

Fig. 4 B is the side view of the toothbrush that the 4th embodiment of the present invention relates to.

Fig. 5 A is the top view of the toothbrush that the 5th embodiment of the present invention relates to.

Fig. 5 B is the side view of the toothbrush that the 5th embodiment of the present invention relates to.

Fig. 6 A is the top view of the toothbrush that the 6th embodiment of the present invention relates to.

Fig. 6 B is the side view of the toothbrush that the 6th embodiment of the present invention relates to.

Fig. 7 A is the top view of the toothbrush for comparative example.

Fig. 7 B is the side view of the toothbrush for comparative example.

Fig. 8 A is the top view of the toothbrush for comparative example.

Fig. 8 B is the side view of the toothbrush for comparative example.

Fig. 9 A is the top view of the toothbrush for comparative example.

Fig. 9 B is the side view of the toothbrush for comparative example.

Figure 10 A is the top view of the toothbrush for comparative example.

Figure 10 B is the side view of the toothbrush for comparative example.

Figure 11 A is the top view of the toothbrush for comparative example.

Figure 11 B is the side view of the toothbrush for comparative example.

Symbol description

1,100,200,300,400,500 toothbrushes

2 brushhead

3 handle portion

20 plant hair side

21 brushhead tops

30,130,230,232,330,332 first pieces groups

32 first pieces

40,140,240,242,340,342,440 second pieces groups

42,442 second pieces

452 the 3rd pieces

Detailed description of the invention

First embodiment:

Referring to Figure 1A and Figure 1B, the toothbrush that the first embodiment of the present invention relates to is described.

Toothbrush 1 shown in Figure 1A and Figure 1B, has brushhead 2 and extends the strip handle 3 being arranged at brushhead 2, and having the first pieces group 30 and the second pieces group 40 in planting on hair side 20 of brushhead 2.In Figure 1A and Figure 1B, symbol 22 represents the lateral margin of a side of the width of brushhead 2, and symbol 24 represents the lateral margin of the opposing party of the width of brushhead 2.In addition, the width of brushhead 2 is, and from brushhead top 21 towards the direction that brushhead 2 is orthogonal with the direction of the boundary (brushhead cardinal extremity) of handle portion 3.

First pieces group 30 is arranged at the substantial middle of planting hair side 20, and towards brushhead cardinal extremity from brushhead top 21, with the 1st row 1 (1 × 1 row), the mode of 2nd ~ 6 row 2 (2 × 5 row) has planted the first pieces 32.

Second pieces group 40, is made up of 7 the second pieces 42 planted along lateral margin 22 from brushhead top 21 and 7 the second pieces 42 planted along lateral margin 24 from brushhead top 21.That is, the second pieces group 40 by the second pieces 42, the periphery planted into along brushhead 2 surrounds the first pieces group 30 in the part except brushhead base end side, this second pieces group 40 plane open in brushhead base end side sees roughly U-shaped.Below, the part of the opening in the second pieces group is called opening portion.

In the present embodiment, between the region with the second pieces group 40 and brushhead cardinal extremity, implanting has 3 the first pieces 32.

In addition, from the second pieces 42 near brushhead top 21 to the distance L2 of the second pieces 42 near brushhead cardinal extremity be, near brushhead top 21 the second pieces 42 to the first pieces 32 near brushhead cardinal extremity distance L1 7/8 distance.

The length of the first pieces 32, namely from planting the length T1 on top of hair side 20 to the first pieces 32 than the length of the second pieces 42, namely short from the length T2 on the top of planting hair side 20 to the second pieces 42.

In toothbrush 1, brushhead 2 and handle portion 3 one-body molded as a whole for strip (below integrated brushhead 2 and handle portion 3 being called handle body), such as resin can be obtained as material by ejection formation.

The resin forming handle body can be considered rigidity, mechanical property etc. that toothbrush 1 requires and determine, such as, can enumerate crooked elastic rate (JISK7203) high hardness resin in the scope of 500 ~ 3000MPa.As such high hardness resin, can enumerate: such as polypropylene (PP), PET (PET), polybutylene terephthalate (PBT), polycaprolactam (PCT), polyformaldehyde (POM), polystyrene (PS), acrylonitrile-butadiene-styrene copolymer resin (ABS), cellulose propionate (CP), polyarylate, Merlon and acrylonitrile-styrene copolymerized resin (AS) etc.Can use in these resins independent a kind or appropriately combined two or more.

In addition, handle portion 3 also partly or integrally can be coated with the resin of the softnesses such as such as synthetic rubber.

The size of brushhead 2 can be considered in intraoral operability and determine, such as width is at more than 10mm below 15mm, and thickness is at more than 4mm below 8mm.

The buckling strength of the first pieces 32 is lower than the buckling strength of the second pieces 42 described later, and such as preferably more than 0.5N below 5N, more than 1N below 3N is better.If less than 0.5N, hair hardness (bounce) is too soft, fully may not go out the dirt of between cog portion, tooth neck by Sao.If more than 5N, the second pieces 32 may be difficult to enter between cog portion or tooth neck.

In this original text, the buckling strength of pieces is, with JISS3016 (5.3 (2.2)) for standard, by compression test, tries to achieve the peak load of the pieces of physical length with pieces unit.

The length T1 of the first pieces 32 can consider buckling strength that the first pieces 32 requires, form the bristle of the first pieces 32 material, thickness etc. and determine, such as preferably more than 6mm below 11mm.The length T1 forming first pieces 32 of the first pieces group 30 can be all identical, also can be mutually different.In addition, the length of pieces 32 of first is the length of bristle the longest in the bristle of formation first pieces 32.

Thickness (pieces footpath) R1 of the first pieces 32 can consider the buckling strength that the first pieces 32 requires, the material forming the bristle of the first pieces 32, thickness and determining, such as preferably more than 1mm below 2mm.The pieces footpath R1 forming first pieces 32 of the first pieces group 30 can be all identical, also can be mutually different.In addition, the pieces footpath R1 of the first pieces 32 is the diameters of first pieces 32 of planting in hair side 20.

As the bristle of formation first pieces 32, such as can enumerate: from using plant hair side 20 as starting point (0mm) more than 0mm 5mm with upper/lower positions towards the top end diameter of bristle diminish gradually and the bristle (taper hair) of the hair top of described bristle by sharpening, from planting hair side 20 to the bristle (broad wool) etc. that its diameter of the top of bristle is identical, wherein preferably taper hair.Here, referring to its diameter of the top of bristle is identical from planting hair side, the diameter of the horizontal cross-section of each bristle of described second pieces, from planting hair side in the whichever horizontal cross-section on the top of bristle, is identical substantially.Substantially the samely to refer to, due to the reason of machining accuracy etc., allow the deviation within ± 10%.

Taper hair is used for entering between cog portion or tooth neck, and easily Sao goes out the dirt of between cog portion or tooth neck.Described taper hair refers to, the direction vertical with planting hair side, the bristle that through the shape in the cross section on the top of bristle is the such as shape such as parabola, triangle.

In addition, hair top refers to the top to bristle from the position of top below the 1mm of bristle.

As broad wool, can enumerate: the top of bristle be parallel to the bristle of the plane of planting hair side 20, the top of bristle is rounded at hemispheric bristle.

At this, the top of bristle is parallel to the plane of planting hair side to refer to, the opposite side in the cross section of the horizontal direction on the top of each bristle is arranged essentially parallel to the opposite side of planting hair side.Substantially parallelly to refer to, due to the reason of machining accuracy etc., allow the deviation within ± 10%.

The material forming the bristle of the first pieces 32 can use, such as: the polyamide such as 6-12 nylon (6-12NY), 6-10 nylon (6-10NY); The polyester such as PET, PBT, PTT (PTT), PEN (PEN), PBN (PBN); The polyolefin such as PP; And the synthetic resin material of the elastomer of TPO synthetic rubber, vinyl synthetic rubber etc. etc.

Also can using these resin materials in multiple combination ground, wherein, for easily making mao hardness hardening, improving the getting property of Sao of tartar, the preferably mixture of multiple polyester.

In addition, as bristle, can enumerate a kind of polyester bristle with multiple cored structure, described multiple cored structure has: core; And be arranged at the sheath portion of few more than 1 layer in outside of described core.During owing to having multiple cored structure, different polyester can be used, so easily adjust mechanical property at core and sheath portion.Therefore, it is possible to easily obtain the bristle that mao hardness is hard, the getting property of Sao of tartar is higher.

The shape of cross section forming the bristle of the first pieces 32 is preferably circular, but might not be defined in circle, can be the arbitrary shape of the object purposes adapting to toothbrush 1.Such as oval, polygon (such as triangle, quadrangle, pentagon, hexagon etc.), abnormity (the such as cloverleaf pattern of star, three leaves, the cloverleaf pattern etc. of four leaves.) etc.

To the thickness of the bristle of formation first pieces 32, be not particularly limited, such as, if cross section is circular, for making mao hardness hardening thus improving the effect that Sao gets tartar further, preferably more than 6mil below 12mil.But, as bristle, if use there is the bristle of multiple cored structure, bristle that polyester mixture is formed and make mao hardness hardening, even if higher Sao also can be obtained less than 6mil get effect.

In addition, consider use sense, brush and sweep sense, cleaning effect, durability etc., also the bristle of more than different for thickness two can be carried out any combination and use.

The buckling strength of the second pieces 42 is higher than the buckling strength of the first pieces 32, and such as preferably more than 1N below 6N, more than 1.5N below 3.5N is better.If less than 1N, hair hardness is too soft, likely produce the flank of tooth or occlusal clean feel insufficient, if more than 6N, the second pieces 42 is difficult to bend, and the first pieces 32 is difficult to arrive between cog portion or tooth neck.

Be expressed as the buckling strength ratio of [(buckling strength of the first pieces)/(buckling strength of the second pieces)], the function that can require according to toothbrush 1 and determining, such as preferably less than more than less than more than 0.4 0.9,0.5 0.8 better.If less than 0.4, the hair hardness of the first pieces 32 is too soft, may not fully clean between cog portion or tooth neck.If more than 0.9, the hair hardness of the first pieces 32 is too hard, may be difficult to enter between cog portion or tooth neck.

The length T2 of the second pieces 42 is longer than the length T1 of the first pieces 32, can consider the material of the bristle of formation second pieces 42, thickness and determining, such as preferably more than 8mm below 13mm.

The staple length difference D1 being expressed as the length T2 of second pieces 42 of [T2-T1] and the length T1 of the first pieces 32 is not particularly limited, and such as preferably more than 0.3mm below 3mm, more than 0.5mm below 2mm is better.If less than 0.3mm, be difficult to obtain the short effect of the first pieces 32 to the second pieces 42, if more than 3mm, the first pieces 32 is difficult to arrive between cog portion or tooth neck.

The pieces footpath R2 of the second pieces 42 is identical with the pieces footpath R1 of the first pieces 32.

As the bristle of formation second pieces 42, such as, can enumerate taper hair, broad wool, wherein it is preferred that broad wool, the top of bristle is better by the broad wool of sphering.Second pieces 42 is made up of broad wool, so can clean occlusal surface, the flank of tooth of molar more well.

The material forming the bristle of the second pieces 42 is identical with the material of the bristle forming the first pieces 32.

The shape of cross section forming the bristle of the second pieces 42 is identical with the shape of cross section of the bristle forming the first pieces 32.

Next, the using method of the toothbrush 1 of present embodiment is described.

In oral cavity, linking brushhead top 21 with on the direction of brushhead cardinal extremity, toothbrush 1 is moved back and forth.Such as, when cleaning the occlusal surface of molar, the second pieces group 40 wraps into molar and slides on tooth, and the second pieces 42 Sao that buckling strength is higher gets the dirt being attached to occlusal surface and the flank of tooth.Further, the first pieces group 30 abuts with occlusal surface, and the first pieces 32 that buckling strength is lower enters occlusal tiny recess, dirt Sao goes out by between cog portion.In addition, when cleaning the flank of tooth of cheek side (outside) or tongue side (inner side), when brushhead 2 is operated in oral cavity with pulling out, because the brushhead cardinal extremity of the second pieces group 40 is open, so the first pieces 32 preferentially abuts with tooth.Then, the first pieces 32 is lower due to buckling strength, so easily bend, thus enter between cog portion or tooth neck, and Sao goes out dirt.In addition, when operating with brushhead 2 being inserted intraoral inner portion, the second pieces 42 preferentially abuts with tooth.Then, the second pieces 42 pairs of flank of tooth that buckling strength is higher apply strong pressure, thus Sao gets dirt well.

According to the present embodiment, have: the first pieces group 30 planted by the first pieces 32; And by second pieces 42 plant the second pieces group 40, this the second pieces group 40 opens to the direction on brushhead top 21 or the direction of brushhead cardinal extremity and surrounds the first pieces group 30, because the length of the first pieces 32 is shorter than the length of the second pieces 42, the buckling strength of the first pieces 32 is lower than the buckling strength of the second pieces 42, so can clean between cog portion, the occlusal surface of tooth neck and molar and the flank of tooth well.

Further, if forming the bristle of the first pieces 32 is taper hairs, then the recess of between cog portion, tooth neck or bite can be cleaned more well.

Further, if the bristle forming the second pieces 42 is broad wool, then the second pieces 42 can apply stronger pressure to occlusal surface, the flank of tooth, thus Sao gets dirt more well.

Second embodiment:

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

In addition, also the description thereof will be omitted for the symbol identical for the structure tag identical with the first embodiment, is mainly described the point different from the first embodiment.

Fig. 2 A and the toothbrush shown in Fig. 2 B 100 have the first pieces group 130 and the second pieces group 140 planting on hair side 20.

In toothbrush 100, from the second pieces 42 near brushhead top 21 to the distance L3 of the second pieces 42 near brushhead cardinal extremity be, near brushhead top 21 the second pieces 42 to the first pieces 32 near brushhead cardinal extremity distance L1 less than 1/2 distance.Further, between the region with the second pieces group 140 and brushhead cardinal extremity, the first pieces 32 is successively with 4 × 3 row from side, brushhead top 21, and the mode of 3 × 1 row plants.

Namely, in the present embodiment, second pieces group 140 is only formed at the region of planting less than 50% of the length in territory, hair-fields from brushhead top 21 towards brushhead cardinal extremity, from brushhead cardinal extremity towards the region of planting more than 50% of the length in territory, hair-fields on brushhead top 21, only plant the first pieces 32.

Namely, relative to from brushhead top 21 to the length of brushhead cardinal extremity, more than 0% and planting in territory, hair-fields below 50% is only formed with the second pieces group 140, relative to from brushhead top 21 to the length of brushhead cardinal extremity, more than 50%, the only implanting of planting in territory, hair-fields of less than 100% has the first pieces 32.

In addition, from brushhead top 21 to 50% of the length of brushhead cardinal extremity plant in territory, hair-fields, implanting has any one party of described second pieces or described first pieces, or described second pieces and described first bundle.

The toothbrush 100 of present embodiment, owing to only arranging the second pieces group 140 near brushhead top 21, so can clean occlusal surface, the flank of tooth of molar by higher pressure.And, due to from brushhead cardinal extremity towards the region of planting more than 50% of territory, hair-fields on brushhead top 21, namely territory, hair-fields is being planted from brushhead top 21 to less than more than 50% 100% of the length of brushhead cardinal extremity, only plant the first soft pieces 32 of hairiness hardness, so be applicable to clean between cog portion or tooth neck.

3rd embodiment:

Referring to Fig. 3 A and Fig. 3 B, the toothbrush that the 3rd embodiment of the present invention relates to is described.

Fig. 3 A and the toothbrush shown in Fig. 3 B 200 hair side 20 have the first pieces group 230 and the second pieces group 240, the first pieces group 232 surrounded and the second pieces group 242 surrounded planting.

First pieces group 230, be arranged at the region of planting less than 50% of territory, hair-fields towards brushhead cardinal extremity from brushhead top 21, namely territory, hair-fields is planted from brushhead top 21 to the length of brushhead cardinal extremity more than 0% and below 50%, successively with 1 × 1 row from brushhead top 21, the mode of 2 × 2 row has planted the first pieces 32.Second pieces group 240 is set to, and opens to brushhead base end side, and surrounds the first pieces group 230, from brushhead top 21, have 4 the second pieces 42 along lateral margin 22 implanting, from brushhead top 21, have 4 the second pieces 42 along lateral margin 24 implanting.

First pieces group 232, be arranged at the region of planting less than 50% of territory, hair-fields from brushhead cardinal extremity towards brushhead top 21, namely from brushhead top 21 to less than more than 50% 100% of the length of brushhead cardinal extremity plant territory, hair-fields, from brushhead cardinal extremity with 2 × 2 row mode planted the first pieces 32.Second pieces group 242 is set to, and opens to side, brushhead top 21, and surrounds the first pieces group 232, has 3 the second pieces 42 near the implanting of brushhead cardinal extremity, has 2 the second pieces 42 along lateral margin 22 implanting, has 2 the second pieces 42 along lateral margin 24 implanting.

In the present embodiment, the opening portion of the second pieces group 240 and the opening portion of the second pieces group 242 just right.

In addition, have between the region of the second pieces group 240 and the region with the second pieces group 242, the first pieces 32 plants in the mode of 4 × 1 row.

According to the present embodiment, the respective opening portion of the second pieces group 242 that the second pieces group 240 arranged near brushhead top 21 and close brushhead cardinal extremity are arranged is set to just right.Therefore, no matter be when brushhead 2 being operated with pulling out in oral cavity or when operating with inserting intraoral inner portion, tooth is always wrapped into by the second pieces group 240 or the second pieces group 242.Its result, can be undertaken clean by the first pieces 32 pairs of between cog portions or tooth neck more well and be cleaned by the second pieces 42 pairs of occlusal surfaces or the flank of tooth.

4th embodiment:

Referring to Fig. 4 A and Fig. 4 B, the toothbrush that the 4th embodiment of the present invention relates to is described.

Fig. 4 A and the toothbrush shown in Fig. 4 B 300 hair side 20 have the first pieces group 330 and the second pieces group 340, the first pieces group 332 surrounded and the second pieces group 342 surrounded planting.

First pieces group 330, be arranged at the region of planting less than 50% of territory, hair-fields towards brushhead cardinal extremity from brushhead top 21, namely a mao scope is planted from brushhead top 21 to the length of brushhead cardinal extremity more than 0% and below 50%, successively with 1 × 1 row from brushhead top 21, the mode of 2 × 1 row has planted the first pieces 32.Second pieces group 340 is set to, and opens to brushhead base end side, and surrounds the first pieces group 330, from brushhead top 21, have 3 the second pieces 42 along lateral margin 22 implanting, from brushhead top 21, have 3 the second pieces 42 along lateral margin 24 implanting.

First pieces group 332, be arranged at the region of planting less than 50% of territory, hair-fields from brushhead cardinal extremity towards brushhead top 21, namely from brushhead top 21 to less than more than 50% 100% of the length of brushhead cardinal extremity plant territory, hair-fields, with 1 × 1 row from brushhead cardinal extremity, the mode of 2 × 1 row has planted the first pieces 32.Second pieces group 342 is set to, and opens to brushhead base end side, and surrounds the first pieces group 332, has planted the second pieces 42, respectively planted 2 the second pieces 42 in the both sides of the first pieces group 332 near brushhead top 21 in the mode of 4 × 1 row.

In the present embodiment, the opening portion of the second pieces group 340 and the opening portion of the second pieces group 342 are all formed at brushhead base end side.

In addition, have between the region of the second pieces group 340 and the region with the second pieces group 342, the first pieces 32 plants in the mode of 4 × 2 row.

According to the present embodiment, the second pieces group 340 no matter arranged near brushhead top 21 or the second pieces group 342 arranged near brushhead cardinal extremity, opening portion is all towards brushhead cardinal extremity.Therefore, when brushhead 2 is operated in oral cavity with pulling out, can be undertaken clean by the first pieces 32 pairs of between cog portions or tooth neck more well and be cleaned by the second pieces 42 pairs of occlusal surfaces or the flank of tooth.

5th embodiment:

Referring to Fig. 5 A and Fig. 5 B, the toothbrush that the 5th embodiment of the present invention relates to is described.

In addition, for first or the identical symbol of the identical structure tag of the 4th embodiment and the description thereof will be omitted, be mainly described from first and the different point of the 4th embodiment.

Fig. 5 A and the toothbrush shown in Fig. 5 B 400 hair side 20 have the 3rd long pieces 452 of the first pieces group 330 and the second pieces group 440 surrounded, ratio second pieces 442 in the outside of the second pieces group 440 planting.

Second pieces group 440 of present embodiment is set to, open to brushhead base end side, and surround the first pieces group 330, from brushhead top 21, there are 3 the second pieces 442 along lateral margin 22 implanting, from brushhead top 21, have 3 the second pieces 442 along lateral margin 24 implanting.

As shown in Figure 5 B, the upper surface of the second pieces group 440 is move closer to the inclined plane of planting hair side towards brushhead cardinal extremity from brushhead top 21.

Between the region with the second pieces group 440 and brushhead cardinal extremity, plant successively from brushhead top 21: the first pieces 32 of 4 × 1 row, 3rd pieces 452 of 4 × 1 row, first pieces 32 of 4 × 1 row, first pieces 32 of the 3rd pieces 452,3 × 1 row of 4 × 1 row.

Near the height of planting on hair side 20 of the second pieces group 440 on brushhead top 21, namely near the length T3 of second pieces 442 on brushhead top 21, equal with the length T2 of the second pieces 42.

Near the height of planting on hair side 20 of the second pieces group 440 of brushhead cardinal extremity, that is, in the bristle of formation second pieces 442, near the length T4 of the bristle of brushhead cardinal extremity, shorter than length T3.In addition, length T4 is preferably equal with length T1 or more, longer than length T1 better.

As the second pieces 442, can enumerate taper hair, broad wool, wherein it is preferred that broad wool, the top of bristle is better by the broad wool of sphering.

The pieces footpath of the second pieces 442 is identical with the pieces footpath R2 of the second pieces 42.

The material forming the bristle of the second pieces 442 is identical with the material of the bristle forming the second pieces 42, and the shape of cross section forming the bristle of the second pieces 442 is identical with the shape of cross section of the bristle forming the second pieces 42.The thickness forming the bristle of the second pieces 442 is identical with the bristle forming the second pieces 42.

Be not particularly limited the 3rd pieces 452, preferably its buckling strength is lower than the second pieces 442.

Be expressed as the buckling strength ratio of [(buckling strength of the pieces of the 3rd pieces)/(buckling strength of the second pieces)], can determine according to the function of toothbrush 400 requirement, such as preferably less than more than 0.4 0.9, less than more than 0.5 0.8 is better.If less than 0.4, the hair hardness of the 3rd pieces 452 is too soft, may not fully clean between cog portion or tooth neck.If more than 0.9, the hair hardness of the 3rd pieces 452 is too hard, may be difficult to enter between cog portion or tooth neck.

Making the buckling strength of the 3rd pieces 452 lower than the second pieces 442, is to make the 3rd pieces 452 more easily enter between cog portion or tooth neck.

The length T5 of the 3rd pieces 452 is longer than the length T3 of the second pieces 442.

By making length T5 longer than length T3, the 3rd pieces 452 is made easily to enter between cog portion or tooth neck.

Be expressed as the staple length difference D2 of [T5-T3], such as, preferably more than 0.2mm below 1.5mm.If less than 0.2mm, be difficult to the effect obtaining implanting the 3rd pieces 452, if more than 1.5mm, may damage in intraoral operability.

Thickness (pieces footpath) R3 of the 3rd pieces 452 can consider buckling strength that the 3rd pieces 452 requires, the material of bristle forming the 3rd pieces 452, thickness and determining, such as preferably more than 1mm below 2mm.The pieces footpath R3 of the 3rd pieces 452 is the diameters of the 3rd pieces 452 of planting in hair side 20.

The bristle forming the 3rd pieces 452 is taper hair.By making the 3rd pieces 452 be taper hair, between cog portion or tooth neck can be cleaned more well.

The material forming the bristle of the 3rd pieces 452 is identical with the material of the bristle forming the first pieces 32, and the shape of cross section forming the bristle of the 3rd pieces 452 is identical with the shape of cross section of the bristle forming the first pieces 32.The thickness forming the bristle of the 3rd pieces 452 is identical with the bristle forming the first pieces 32.

According to the present embodiment, because and three pieces 452 that taper hair be made up of longer than the second pieces 442 plants the outside in the second pieces group 440, so can clean between cog portion or tooth neck more well.

6th embodiment:

Referring to Fig. 6 A and Fig. 6 B, the toothbrush that the 6th embodiment of the present invention relates to is described.

In addition, also the description thereof will be omitted for the symbol identical for the structure tag identical with the first, the 4th or the 5th embodiment, is mainly described the point different from the first, the 4th and the 5th embodiment.

Fig. 6 A and the toothbrush shown in Fig. 6 B 500 hair side 20 have the 3rd long pieces 452 of the first pieces group 330 and the second pieces group 440 surrounded, ratio second pieces 442 in the outside of the second pieces group 440 planting.

Between the region with the second pieces group 440 and brushhead cardinal extremity, plant successively from brushhead top 21: first row, the first pieces 32 of 2 the 3rd pieces 452 and each 1 of its both sides; Secondary series, 4 the first pieces 32; 3rd row, the first pieces 32 of 2 the 3rd pieces 452 and each 1 of its both sides; 4th row, 4 the first pieces 32; 5th row, the first pieces 32 of 1 the 3rd pieces 452 and each 1 of its both sides.

Other embodiment:

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

In the first ~ four embodiment, the first pieces only plants the outside in the second pieces group, but the pieces planted in the outside of the second pieces group is not limited to the first pieces.But, be adjacent to the pieces of the opening portion of the second pieces group (such as, in the first embodiment, plant 4 the first pieces between the region being provided with the second pieces group and brushhead cardinal extremity) buckling strength, preferably equal or following with the buckling strength of the second pieces forming the second pieces group, further length is equal or following better.If the pieces being adjacent to the opening portion of the second pieces group is higher than the buckling strength of second pieces of formation pieces group, the first pieces forming the first pieces group is difficult to touch tooth, likely cleans insufficient between cog portion or tooth neck.

In the second, the five ~ six embodiment, only the second pieces group is set near brushhead top, but the present invention is not limited to this, also only the second pieces group can be set near brushhead cardinal extremity.But, from the viewpoint improving spatter property, preferably only the second pieces group is set near brushhead top.This be in order to intraoral clean in, when carrying out clean to the occlusal surface of molar, the flank of tooth, operate toothbrush is so that by going out dirt near the pieces Sao of brushhead top implantation.

In the embodiment of the first ~ six, pieces is arranged in row on the width of brushhead, but the present invention is not limited to this, pieces adjacent on the width of brushhead also can stagger on the direction of brushhead cardinal extremity from brushhead top mutually.

Embodiment:

Below, embodiment is shown, and the present invention is described in detail, but the present invention is not limited to record below.

Embodiment 1:

According to the specification described in table 1, produce the toothbrush identical with the toothbrush 1 of Figure 1A and Figure 1B.The handle body of this toothbrush is PET system.To the toothbrush obtained, evaluate its molar cleaning force, between cog cleaning force and tooth parcel true feeling, and its result is represented in table.In addition, " bristle types " in table one " taper " on hurdle be represent taper hair, " directly " represents that top is by the broad wool of sphering (lower with).

Embodiment 2:

Except making the toothbrush identical with the toothbrush 100 of Fig. 2 A and Fig. 2 B, obtain toothbrush identically with embodiment 1.To the toothbrush obtained, evaluate its molar cleaning force, between cog cleaning force and tooth parcel true feeling, and its result is represented in table.

Embodiment 3:

Except making the toothbrush identical with the toothbrush 200 of Fig. 3 A and Fig. 3 B, obtain toothbrush identically with embodiment 1.To the toothbrush obtained, evaluate its molar cleaning force, between cog cleaning force and tooth parcel true feeling, and its result is represented in table.

Embodiment 4:

Except making the toothbrush identical with the toothbrush 300 of Fig. 4 A and Fig. 4 B, obtain toothbrush identically with embodiment 1.To the toothbrush obtained, evaluate its molar cleaning force, between cog cleaning force and tooth parcel true feeling, and its result is represented in table.

Embodiment 5:

Except making the toothbrush identical with the toothbrush 400 of Fig. 5 A and Fig. 5 B, obtain toothbrush identically with embodiment 1.To the toothbrush obtained, evaluate its molar cleaning force, between cog cleaning force and tooth parcel true feeling, and its result is represented in table.In addition, in table, the length " 10.5-9 " of the second pieces represents that the length T3 of Fig. 5 A and Fig. 5 B is 10.5mm, and length T4 is 9mm.In addition, buckling strength (N) " 2.4-2.7 " of the second pieces represents that the buckling strength of 3 kind of second pieces that length is different is more than 2.4N below 2.7N (lower same).

Embodiment 6:

Except making the toothbrush identical with the toothbrush 500 of Fig. 6 A and Fig. 6 B, obtain toothbrush identically with embodiment 1.To the toothbrush obtained, evaluate its molar cleaning force, between cog cleaning force and tooth parcel true feeling, and its result is represented in table.

Comparative example 1:

Except the toothbrush that the toothbrush 900 made with Fig. 7 A and Fig. 7 B represent is identical, obtain toothbrush identically with embodiment 1.4 the first pieces 32 in toothbrush 200 (Fig. 3 A and Fig. 3 B) are changed to the second pieces 42 and obtain by toothbrush 900, and described 4 the first pieces 32 plant in having between the region of the second pieces group 240 and the region with the second pieces group 242.That is, the direction, brushhead top 21 of toothbrush 900 and brushhead proximal direction are all surrounded by the second pieces 42.To the toothbrush obtained, evaluate its molar cleaning force, between cog cleaning force and tooth parcel true feeling, and its result is represented in table.

Comparative example 2:

Except the toothbrush that the toothbrush 901 made with Fig. 8 A and Fig. 8 B represent is identical, obtain toothbrush identically with embodiment 1.2 the second pieces 42 in toothbrush 1 (Figure 1A and Figure 1B) are changed to the first pieces 32 and obtain by toothbrush 901, and described second pieces 42 plants near ground, brushhead top 21 in the second pieces group 40.That is, toothbrush 901 opens to the direction on brushhead top 21 and the direction of brushhead cardinal extremity, and surrounds the first pieces 32.To the toothbrush obtained, evaluate its molar cleaning force, between cog cleaning force and tooth parcel true feeling, and its result is represented in table.

Comparative example 3:

Except the toothbrush that the toothbrush 902 made with Fig. 9 A and Fig. 9 B represent is identical, obtain toothbrush identically with embodiment 1.The second whole pieces 42 in toothbrush 1 (Figure 1A and Figure 1B) is changed to the first pieces 32 and obtains by toothbrush 902.To the toothbrush obtained, evaluate its molar cleaning force, between cog cleaning force and tooth parcel true feeling, and its result is represented in table.

Comparative example 4:

Except the toothbrush that the toothbrush 903 made with Figure 10 A and Figure 10 B represent is identical, obtain toothbrush identically with embodiment 1.The first whole pieces 32 in toothbrush 1 (Figure 1A and Figure 1B) is changed to the second pieces 42 and obtains by toothbrush 903.To the toothbrush obtained, evaluate its molar cleaning force, between cog cleaning force and tooth parcel true feeling, and its result is represented in table.

Comparative example 5:

Except the toothbrush that the toothbrush 904 made with Figure 11 A and Figure 11 B represent is identical, obtain toothbrush identically with embodiment 2.Toothbrush 904 is that the first whole bundle 32 in toothbrush 100 (Fig. 2 A and Fig. 2 B) is changed to the first pieces 932, and the second whole pieces 42 is changed to second pieces 942 shorter than the first pieces 932 and obtains.To the toothbrush obtained, evaluate its molar cleaning force, between cog cleaning force and tooth parcel true feeling, and its result is represented in table.

Table 1:

Evaluation method:

Molar cleaning force:

Use the toothbrush of each example, implement simulation cleaning force test below.First; prepare one on the flank of tooth of the first molar of cheek side, right side, to be coated with encrimson (#19 is red for oriental cherry whiteboard marker pen; Sakura Co's soft wax pen system) as adult's maxilla model (500AU, Nisshin Co., Ltd's system) of simulating tartar.To the tooth defining simulation tartar, vertically press toothbrush with the load of 200g, move back and forth while carry out 10 times in the direction linking brushhead top and brushhead cardinal extremity with the stroke of 20mm, clean.After clean, measure tartar removal rate by following method.

The mensuration of tartar removal rate:

Before cleaning force test, measured the occupied area of the simulation tartar of the flank of tooth of first molar by image analysis, after cleaning force test, again measure the occupied area of the simulation tartar at same position, calculate tartar removal rate by following (1) formula.By following judgment standard to the tartar removal rate classification calculated, and evaluate molar cleaning force.

Tartar removal rate (%)=((the tartar occupied area after the tartar occupied area before cleaning force test-cleaning force test)/(the tartar occupied area before cleaning force test)) × 100 (1)

Judgment standard:

More than A:70%

More than B:50% and less than 70%

More than C:30% and less than 50%

D: less than 30%

Between cog cleaning force:

Except the between cog portion coating Red coating of the first molar in cheek side, right side and second molar teeth, other are identical with molar cleaning force, evaluate between cog cleaning force.

Tooth parcel true feeling:

10 experiencers use in the toothbrush oral cavity cleaning of each example, and following commentary valency benchmark evaluation intraoral sense of touch at that time.The average mark of experiencer 10 people be more than 4.0 points be " A ", average mark is more than 3.0 points and is " B " less than 4.0 points, and average mark is more than 2.0 points and is " C " less than 3.0 points, and average mark is " D " less than 2.0 points.

Metewand:

5 points: strongly feel tooth sense of touch that a ground is typically entrapped within.

4 points: feel tooth sense of touch that a ground is typically entrapped within consumingly.

3 points: tooth sense of touch that a ground is typically entrapped within can be felt.

2 points: less can feel tooth sense of touch that a ground is typically entrapped within.

1 point: complete imperceptible tooth sense of touch that a ground is typically entrapped within.

As shown in table 1, apply embodiments of the invention 1 ~ 6, whichever molar cleaning force, between cog cleaning force and tooth parcel true feeling is all " B " or " A ".Except this, the molar cleaning force and the between cog cleaning force that have planted the embodiment 5 ~ 6 of the 3rd pieces in the outside of the second pieces group are improved.

On the other hand, brushhead top orientation and brushhead proximal direction are all wrapped up true feeling by the molar cleaning force of the comparative example 1 of the second pieces encirclement, between cog cleaning force and tooth is " C ".In addition, the molar cleaning force of comparative example 2 that brushhead top orientation and brushhead proximal direction all open is " D ".

In addition, the tooth parcel true feeling the first pieces being made the comparative example 5 of the pieces longer than the second pieces is " D ".

Judge with these results, apply toothbrush of the present invention and can clean between cog portion, the occlusal surface of tooth neck and molar and the flank of tooth well.

Industry utilizes possibility

According to the present invention, can provide a kind of and can clean between cog portion, tooth neck and the occlusal surface of molar and the toothbrush of the flank of tooth well.

Claims

1. a toothbrush, to plant on hair side in brushhead the pieces that implanting has more than 2, and described pieces is tied up by the bristle of more than 2 and formed, and the feature of this toothbrush is to have:

Plant the first pieces group of first pieces of more than 1; And open to the top orientation of described brushhead or proximal direction and plant the second pieces group of the second pieces with surrounding described first pieces group,

The top of described first pieces is lower than the top of described second pieces,

The buckling strength of described first pieces is lower than the buckling strength of described second pieces,

The 3rd pieces having top higher than the top of described second pieces is planted in the outside of described second pieces group.

2. toothbrush as claimed in claim 1, it is characterized in that, hair top that described first pieces has the bristle bristle by sharpening, and the diameter of this bristle reduces towards the top of bristle to plant hair side gradually as the position of more than 0mm below the 5mm of starting point.

3. toothbrush as claimed in claim 1, it is characterized in that, described second pieces group is only formed near the top of described brushhead.

4. toothbrush as claimed in claim 2, it is characterized in that, described second pieces group is only formed near the top of described brushhead.

5. toothbrush as claimed in claim 1, it is characterized in that, hair top that described 3rd pieces has the bristle bristle by sharpening, and the diameter of this bristle reduces towards the top of bristle to plant hair side gradually as the position of more than 0mm below the 5mm of starting point.

6. toothbrush as claimed in claim 2, it is characterized in that, hair top that described 3rd pieces has the bristle bristle by sharpening, and the diameter of this bristle reduces towards the top of bristle to plant hair side gradually as the position of more than 0mm below the 5mm of starting point.

7. toothbrush as claimed in claim 3, it is characterized in that, hair top that described 3rd pieces has the bristle bristle by sharpening, and the diameter of this bristle reduces towards the top of bristle to plant hair side gradually as the position of more than 0mm below the 5mm of starting point.

8. toothbrush as claimed in claim 4, it is characterized in that, hair top that described 3rd pieces has the bristle bristle by sharpening, and the diameter of this bristle reduces towards the top of bristle to plant hair side gradually as the position of more than 0mm below the 5mm of starting point.

9. the toothbrush according to any one of claim 1 ~ 8, is characterized in that, described second pieces is made up of the bristle of the non-sharpening in hair top.

10. the toothbrush according to any one of claim 1 ~ 8, is characterized in that, the diameter of described second pieces is identical to hair top from planting hair side.

11. toothbrushes according to any one of claim 1 ~ 8, it is characterized in that, the top of the bristle of described second pieces is the plane parallel with planting hair side.

12. toothbrushes according to any one of claim 1 ~ 8, it is characterized in that, the top of the bristle of described second pieces is rounded at hemispherical.

13. toothbrushes as claimed in claim 1, is characterized in that, the staple length difference of the length of described second pieces and the length of described first pieces is more than 0.3mm below 3mm.

14. toothbrushes as claimed in claim 1, is characterized in that, the buckling strength ratio being expressed as [(buckling strength of described first pieces)/(buckling strength of described second pieces)] is less than more than 0.4 0.9.

15. toothbrushes according to any one of claim 5 ~ 8, it is characterized in that, the staple length difference of the length of described 3rd pieces and the length of described second pieces is more than 0.2mm below 1.5mm.

16. toothbrushes according to any one of claim 5 ~ 8, it is characterized in that, the buckling strength ratio being expressed as [(buckling strength of the pieces of the 3rd pieces)/(buckling strength of the second pieces)] is less than more than 0.4 0.9.

17. toothbrushes as claimed in claim 1, is characterized in that, described second pieces mass-planting be located at from brushhead top to the length of brushhead cardinal extremity more than 0% and less than 50% plant territory, hair-fields.