CN107635432A - Toothbrush - Google Patents

Abstract

The present invention provides a kind of uneasiness for gum pain without during operation, can clean the toothbrush of teeth space exactly.The toothbrush (10) of the present invention, it is characterized in that, it is circular brushhead (16) to be included in plan view, and it has the 1st plant pore (19A) on hair side (16a) is planted and is configured at around the 1st plant pore (19A) and multiple 2 plant pores (19B, 19B) of the shape than the 1st plant pore (19A) greatly；Plant the 1st pieces (14A) in the plant pores of Mao Yu 1 (19A)；Multi beam plants hair and plants the 2nd pieces (14B) in pore (19B, 19B) in each 2nd；The top of 1st pieces (14A) protrudes than the top of the pieces (14B) of multi beam the 2nd.

Description

Toothbrush

Technical field

The present invention relates to toothbrush.

This application claims the Japanese patent application the 2015-119231st filed an application based on June 12nd, 2015 in Japan Priority, and its content is quoted herein.

Background technology

As the appurtenance that " boundary of tooth and gum " is swept for careful brush, so-called single cluster/mono- beam (one is used Tuft) toothbrush.It the advantage is that, because brush section is only made up of a branch of pieces, so compared with common toothbrush, in oral cavity The interference of interior brushhead is less, and high-quality green tea can be made to encounter the place for wanting brush exactly.

In the past, it has been disclosed that have following technologies (patent document 1)：In common toothbrush, in order to improve the cleaning of teeth space, and Make the inclined mode in the inside side of pieces around central pieces and in a manner of surrounding the central pieces, formed and single Shu Xiangtong Pieces structure.In addition, be also disclosed it is a kind of possess the pieces of single beam in the tip side for planting hair portion, possess at rear it is common more The toothbrush (patent document 2) of the aggregate of beam pieces.

[prior art literature]

[patent document]

Patent document 1：Japanese Patent Laid-Open 2008-142371 publications

Patent document 2：Japanese Patent Laid-Open 2011-83462 publications

The content of the invention

[inventing problem to be solved]

Present single beam toothbrush, because its brush section is only made up of a branch of pieces, so compared with common toothbrush, knot Necessarily pieces locally applies fruit " to the pressure of gum ".

Particularly, pain, bleeding when patients with periodontal disease is in order to avoid cleaning etc., it is intended to which preference is not given to gum as far as possible Stimulate the toothbrush of such contact sense.

In addition, single beam toothbrush due to because brushhead be compact and be difficult to interfere in oral cavity, so with common toothbrush Compare, it is difficult to during sense operation the brush (pieces) of brushhead encounter where.Therefore, without the pain to gum not Peace, " sharp brush " is encountered into cleaning position exactly becomes extremely difficult.

The present invention is to complete in view of the foregoing, its object is to provide it is a kind of operation when without to gum The uneasiness of pain, the toothbrush that teeth space can be cleaned exactly.

[means for solving problem]

The toothbrush of an embodiment of the present invention, it is characterised in that there is the brushhead that multi beam pieces is implanted on hair side is planted With the shank body extended from the brushhead；It is described plant hair side on, have the 1st pieces and be configured at around the 1st pieces and Diameter multi beam 2nd pieces bigger than the 1st pieces is circular brushhead in plan view；The top of 1st pieces The top than the pieces of multi beam the 2nd is held to protrude.Herein, in plan view it is circular refer to not including oval approximation just Round shape, including because the influence of machining accuracy is without as complete positive round person.

The toothbrush of an embodiment of the present invention can be as follows：Centered on the 1st pieces, the pieces of multi beam the 2nd While configuration with concentric circles, relative to the normal direction of the plant hair side, the pieces of multi beam the 2nd is to the 1st pieces Tilt.

The toothbrush of an embodiment of the present invention can be as follows：2nd pieces is relative to the normal direction for planting hair side Angle of inclination below 10 degree.

The toothbrush of an embodiment of the present invention can be as follows：The bristle staple length of 2nd pieces is outside the brushhead Side towards the 1st pieces and it is progressively longer.

The toothbrush of an embodiment of the present invention can be as follows：1st pieces is by being clipped between the pieces that a folding is two Flat wire (flat plate) be embedded in be arranged at it is described plant hair side on the 1st plant pore in and be implanted, described 2nd mao Beam by be clipped in a folding be two pieces between flat wire be embedded in be arranged at it is described plant hair side on the 2nd plant pore in and It is implanted, the 1st pieces and the 2nd pieces the 1st half pieces formed and are set on the 2nd half pieces pressing from both sides the flat wire There is staple length poor.

The toothbrush of an embodiment of the present invention can be as follows：It is described 2nd plant pore diameter more than 2mm, 3.5mm with Under.

The toothbrush of an embodiment of the present invention can be as follows：Described 1st, which plants pore and the multiple 2nd, plants in pore, most Distance is in more than 0.4mm and below 0.7mm between peritreme between close plant pore.

The toothbrush of an embodiment of the present invention can be as follows：The staple length difference of 1st half pieces and the 2nd half pieces exists In more than 1mm and below 3mm scope.

The toothbrush of an embodiment of the present invention can be as follows：2nd pieces is arranged to more than 5 beams, below 8 beams.

The toothbrush of an embodiment of the present invention can be as follows：1st pieces is made up of ST bristles.ST bristles refer to, surpass Level taper (super tapered) hair, high-quality green tea are the bristle of tapered shape.

The toothbrush of an embodiment of the present invention can be as follows：The head length of the brushhead and with the head length hand over The size of brush head width on the direction of fork is in more than 9mm, below 16mm.Herein, the head length of brushhead refer to along The length of the bearing of trend of shank body, brush head width refer to the length on the direction that intersects with the bearing of trend of shank body.

[The effect of invention]

The present invention can provide a kind of uneasiness for being not accompanied by pain when operating for gum, can accurately clean teeth space Toothbrush.

Brief description of the drawings

Fig. 1 is the plan of the toothbrush of the 1st embodiment.

Fig. 2 is the rearview of the toothbrush shown in Fig. 1.

Fig. 3 is the B visual angles figure of the toothbrush shown in Fig. 2.

Fig. 4 is in the toothbrush shown in Fig. 1, is expanded by the front view of the region A parts surrounded.

Fig. 5 is the sectional view along Fig. 4 A-A ' lines.

Fig. 6 is the figure of the brushhead for the toothbrush for showing the 2nd embodiment.

Fig. 7 is the oblique view that the pieces for the toothbrush for showing the 2nd embodiment is formed.

Fig. 8 is the figure of the brushhead for the toothbrush for showing the 3rd embodiment.

Fig. 9 is the figure for the construction for showing periphery pieces.

[symbol description]

L head lengths, M staple lengths are poor, W brush head widths, 10,20,30 toothbrushes, 14, 24 pieces, 14A, 24A, 34A centers pieces (the 1st pieces), 14B, 24B, 34B peripheries pieces the (the 2nd Pieces), 16 brushheads, 16a one side (plant hair side), 19 plant pores, 19A the 1st plant pore, 19B, 19B the 2nd plant pore, the pieces of 34a the 1st half, the pieces of 34b the 2nd half, 35 flat wires, L1, L2 staple length

Embodiment

Hereinafter, with reference to accompanying drawing, it is specifically described to being applicable embodiments of the present invention.In addition, use the description below Accompanying drawing be for illustrating the accompanying drawing of the composition of embodiments of the present invention, it sometimes appear that the size of each several part shown in figure, The situation different from the size relationship of actual toothbrush such as thickness, size.

[the 1st embodiment]

Fig. 1 is the plan of the toothbrush of the 1st embodiment of the present invention.Fig. 2 is the rearview of the toothbrush shown in Fig. 1.Fig. 3 is The B visual angles figure of toothbrush shown in Fig. 2.

X-direction shown in Fig. 1~Fig. 3 represents to form the bearing of trend of the shank 17 of shank body 11.Y side shown in Fig. 1 and Fig. 2 To the width for representing toothbrush 10.Z-direction shown in Fig. 3 represents the bearing of trend of pieces 14.In Fig. 1~Fig. 3, same structure Indicated into part with same-sign.

In addition, in Fig. 1~Fig. 3, as an example of the toothbrush 10 of the present invention, diagram is enumerated by taking single beam brush as an example, It is described below.

As shown in FIG. 1 to 3, the toothbrush 10 in present embodiment has shank body 11 and pieces 14.Brushhead 16 is in Z side It is extending on to (or the direction being slightly tilted relative to Z-direction), in plan view be near cylindrical part.This Place, it is the circular shape for referring to approximate positive round in plan view, also includes because the influence of machining accuracy is without as complete Full positive round person.

Shank body 11 has the face for 14 outstanding side of pieces and is formed as a surface (plant hair side) 16a of tabular surface.

Shank 17 is using the part held with a hand during toothbrush 10, is extended in the X direction.In shank 17, close to neck 18 side, it is provided with for using the anti-slip part 21 for multiple recesses that finger slippage is prevented during toothbrush 10.

Neck 18 is the part upwardly extended in the side being slightly tilted relative to X-direction, and its thickness is thinner than shank 17.Close In neck 18, its one end is integrated with brushhead 16, and its other end is integrated with shank 17.That is, neck 18 connects brushhead 16 With shank 17.

Fig. 4 is in the toothbrush shown in Fig. 1, is expanded by the front view of the region A parts surrounded.Fig. 5 is the A- along Fig. 4 The sectional view of A ' lines.Fig. 5 corresponds in the toothbrush shown in Fig. 3, and the part for making to be surrounded by region C inverts, after expansion up and down Figure.

In Fig. 4 and Fig. 5, and inscape identical shown in Fig. 1~Fig. 3 is formed and indicated in part with same-sign.

As shown in figure 4, in brushhead 16, it is arranged in the plant hair-fields domain of one side 16a sides, is provided with for planting mao mao's beam Multiple plant pores 19.Multiple plant pores 19, it is by planting pore 19A positioned at the 1st of the center of brushhead 16 and being planted according to surrounding the 1st Multiple 2nd plant pore 19B that mode around pore 19A is configured with concentric circles are formed, respectively in the one side 16a of brushhead 16 Upper shed.In present embodiment, the in centre the 1st plants around pore 19A, is provided with 6 the 2nd and plants pore 19B.

1st plants pore 19A diameterPlant pore 19B's for 1.4mm, the 2ndA diameter of 2.2mm, the 2nd of surrounding plants It is bigger that pore 19B plants pore 19A in the 1st than center1st plants pore 19A diameterIt is not limited to above-mentioned 1.4mm, can suitably it be set in the range of 1~2mm.In addition, the 2nd plants pore 19B diameter2.2mm is also not necessarily limited to, can Suitably to be set in the range of 2~3.5mm.Further, the 1st plant pore 19A diameterThe straight of pore 19B is planted with the 2nd FootpathDifference preferably in more than 0.3mm, further preferably in more than 0.5mm, below 1.5mm.

In addition, when on the basis of one side 16a, the depth d of each plant pore 19 in Z-direction for example can be in 3.0~6.0mm model Enclose interior appropriate setting.

Can be by being integrally formed manufacture for the shank body 11 of above-mentioned composition.The material of shank body 11 can contemplate required by shank body 11 Rigidity, mechanical property etc. and determine, such as the modulus of elasticity in static bending (JIS K7203) can be used in 500~3000MPa model Enclose interior hard resin.

As such hard resin, can use for example polypropylene (PP), polyethylene terephthalate (PET), Polybutylene terephthalate (PBT) (PBT), polycyclohexylene's diformazan alcohol ester (PCT), polyacetals (POM), polyphenyl second Alkene (PS), acrylonitrile-butadiene-styrene resin (ABS), cellulose propionate (CP), polyarylate, makrolon, acrylonitrile- Any a kind of styrene copolymerized resin (AS) etc. or by two or more combine after gained person.

As shown in figure 5, pieces 14 plants central pieces (the 1st pieces) 14A in pore 19A and each by plant hair in the above-mentioned 1st Hair is planted to form in above-mentioned multiple 2 multi beam (6 beam) periphery pieces (the 2nd pieces) 14B planted in pore 19B.Periphery pieces 14B is The coarse wool beam bigger than central pieces 14A diameters.

In addition, periphery pieces 14B's is in a unlimited number more than 6 beams, or 5 beams or 7 beams.

In addition, periphery pieces 14B number is set according to broad wool face 16a size, preferably more than 5 beams, below 8 beams.

Central pieces 14A and each periphery pieces 14B and the one side 16a of brushhead 16 are extended vertically.

Central pieces 14A has embedding part 14a and columnar part 14b.Periphery pieces 14B has embedding part 14a, columnar part 14b and rake 14c.Embedding part 14a is to be contained in the part planted in pore 19.The diameter ratio of periphery pieces 14B pieces The diameter of central pieces 14A pieces is big.Central pieces 14A diameter is preferably in more than 1mm, below 2mm.Periphery pieces 14B Diameter preferably in more than 2mm, below 3.5mm.In present embodiment, the diameter of the diameter of each pieces and the plant pore being implanted into Corresponding (suitable).

Central pieces 14A hair is longer than the hair of periphery pieces group (periphery pieces 14B, 14B), pieces end face 1a It is roughly parallel to one side 16a.On the other hand, on each periphery pieces 14B, each pieces end face 1b relative to each bearing of trend with And one side 16a is tilted.It is somebody's turn to do in " inclination ", in addition to pieces end face 1b as shown in Figure 5 is linear composition, in addition to it is recessed Fall into bending, the bending of standing shape of shape.

In addition, central pieces 14A pieces end face 1a is approximate circle, periphery pieces 14B pieces end face in plan view 1b is ellipse in plan view.

The bristle for forming central pieces 14A is the tapering thickness 6mil of high-quality green tea ST hairs (super taper hair).Form periphery Pieces 14B bristle is until top has the thickness 4mil of identical diameter straight (straight) hair.Central pieces 14A's Staple length L1 is 8mm.

On the other hand, pieces 14B in periphery is formed by the different more bristles bundle of staple length.

Specifically, from the outer lateral center (central pieces 14A) of concentric circles, staple length L2~L3 of bristle is gradually elongated, by staple length Bristle in the range of 5mm~staple length 7mm is formed.Pass through the periphery pieces 14B bristle that makes to be arranged at around central pieces 14A Staple length maintains to tilt, so as to as the entirety of pieces 14, form the domed shape for protruding central pieces 14A.

Brushhead 16 presents approximate circle in plan view, and the brush head width W in Y-direction is 12mm, the brush in X-direction Head length L is 15mm.

As described above, the head length of brushhead refers to the length along the bearing of trend of shank body, brush head width refers to and shank body Bearing of trend intersect direction on length.In present embodiment, the head length of brushhead 16 and with head length hand over The size of brush head width on the direction of fork is in more than 9mm, below 16mm.

The toothbrush 10 of present embodiment, there is the major diameter more soft than central pieces 14A around central pieces 14A Periphery pieces 14B with the pieces 14 that forms of concentric circles configuration.Prominent central pieces 14A cleans gum portion, outer peritricha The gentle scrubbing brushes of beam 14B sweep the gum on periphery.

Periphery pieces 14B " softness ", by left and right such as the diameter of pieces, length, material, bristle shapes, may insure it is aftermentioned Be required " soft contact sense " for patients with periodontal disease and " be used to flush out the appropriate hair rigidity (hair of spot Waist) " under conditions of suitably select.

The toothbrush formed from by 1 beam pieces is different, and the toothbrush 10 of present embodiment by multi beam pieces due to forming brush (hair Beam 14), so be difficult to partly apply pressure to cleaning position.That is, in the multi beam pieces for forming pieces 14, compared to central hair Beam 14A, periphery pieces 14B are bigger diameter.Therefore, the boundary between the high-quality green tea part of brush, pieces disappears, including positioned at Including the central pieces 14A in center, presented in the form of " multi beam pieces " as the curved of " a big pieces " and scratch character.

Due to the curved effect for scratching character of the integration, compared with common single beam brush, it can relax and clean neck portion The local pressure load of timesharing.Accordingly, it can be ensured that for patients with periodontal disease be required " soft contact sense ".

On the other hand, on " to the sweeping forces in narrow region " necessary to being swept as local brush, prominent central pieces 14A Undertake responsibility.Central pieces 14A so high-quality green tea does not avoid narrow region, and has due to supporting surrounding by multi beam periphery pieces 14B Have " being used for the appropriate hair rigidity for flushing out spot ".

In addition, on " the use easiness as local brush brush ", the toothbrush 10 of present embodiment is also than common Single beam brush has more advantage.

On the specification of common single beam brush, brushhead 16 is difficult to interfere in oral cavity, it is difficult to brush part during sense operation Encounter where.Therefore, user is difficult to " sharp brush section " is encountered into cleaning exactly in the case of the uneasiness without pain Position.In addition, the adjustment of " plus-minus of power " when cleaning is also difficult.

And the toothbrush 10 of present embodiment, by softness periphery pieces 14B and want brush sweep it is local around (tooth Tooth, gum) moderately contact, so uneasiness when can relax cleaning as described above.Further, due to periphery pieces 14B moderately contacts tooth, gum, so play the guiding function central pieces 14A guided to the desired brush side of sweeping the floor.

In addition, hinder central the curved of pieces 14A to scratch by periphery pieces group, though than common single beam brush staple length more It is long, central pieces 14A only spend it is curved scratch, sweeping forces can be assured.

Like this, according to the toothbrush 10 of present embodiment, the uneasiness of the pain to gum when can be not accompanied by operation, accurately Ground cleans teeth space.

In addition, for making the central pieces 14A concrete shapes more prominent than periphery pieces group, it is not particularly limited.

In order to improve the soft contact sense to gum, central pieces 14A and periphery pieces 14B brush bristles will be preferably combined with A series of point alignment, to form smooth curve-likes.

On the other hand, it is assumed that be the big teeth space used time, 1mm~2mm level is set preferably on central pieces 14A protrusion width Difference.

Pieces shape and the shape of plant pore are not particularly limited.For making the curved of pieces entirety scratch integration, pass through Centered on central pieces 14A, configure multi beam periphery pieces 14B point symmetry, periphery pieces 14B is formed as subtriangular Or approximate fan, between pieces it is also effective apart from this so as to reduce.

[the 2nd embodiment]

Then, the composition of the 2nd embodiment of the present invention is illustrated.

Although the basic composition of the toothbrush of present embodiment as follows is roughly the same with above-mentioned 1st embodiment, in hair It is different in the composition of beam.Therefore, in illustrating below, a pair part different from previous embodiment is described in detail, saved Slightly common local explanation.In addition, in each accompanying drawing used in explanation, the inscape same-sign common with Fig. 1~Fig. 5 Sign.

Fig. 6 is the figure of the brushhead for the toothbrush for showing the 2nd embodiment.Fig. 7 is the hair for the toothbrush for showing the 2nd embodiment The oblique view that beam is formed.

As shown in Fig. 6 and Fig. 7, the toothbrush 20 of present embodiment has following pieces 24：It is arranged at central pieces (the 1st pieces) Multi beam periphery pieces (the 2nd pieces) 24B around 24A relative to one side 16a normal direction, towards central pieces 24A, to Inner side tilts the pieces 24 formed.Accordingly, the density of the bristle in the high-quality green tea part of pieces 24 is high, it can be ensured that higher is " light Soft contact sense ".

In addition, in present embodiment, more different from the staple length for forming periphery pieces 24B central pieces 24A bristles Staple length difference is in the range of 1mm~3mm.

Herein, " staple length is poor " refers to that the staple length for forming periphery pieces 24B each bristle and central pieces 24A bristle is poor, preferably Ground, in the pieces 24B of periphery, exist by the staple length difference of the bristle and central pieces 24A bristle of inner side nearest central pieces 24A More than 1mm；In the pieces 24B of periphery, the staple length of the bristle in the outside farthest from central pieces 24A and central pieces 24A bristle Difference is in below 3mm.

Like this, according to the toothbrush 20 of present embodiment, it is possible to achieve the pieces at narrower and small cleaning position is invaded Property had concurrently with gentle contact sense to gum.

In present embodiment, each periphery pieces 24B is relative to one side 16a tilt angle theta preferably at most untill 10 degree. When flat wire plants hair, the mode that hair plantation needle is vertically punctured with planting hair side (simultaneously 16a) is conventional.Therefore, pieces relative to When being tilted in more than 10 degree of normal direction of hair side is planted, hair operation is planted and becomes difficult.Even (in the mould of flat wire is not used Mold it is also same) to plant hair.

[the 3rd embodiment]

Then, the composition of the 3rd embodiment of the present invention is illustrated.

Although the basic composition of the toothbrush of present embodiment as follows is roughly the same with above-mentioned 1st embodiment, in hair It is different in the composition of beam.Therefore, in illustrating below, a pair part different from previous embodiment is described in detail, saved Slightly common local explanation.In addition, in each accompanying drawing used in explanation, the inscape same-sign common with Fig. 1~Fig. 5 Sign.

Fig. 8 is the figure of the brushhead for the toothbrush for showing the 3rd embodiment.Fig. 9 is the figure for the construction for showing periphery pieces.

As shown in figure 8, the toothbrush 30 of present embodiment, it is arranged at the peritricha multi beam around central pieces (the 1st pieces) 34A Wai Beam (the 2nd pieces) 34B plants hair with being staggered arrangement (off-set) relative to brushhead 16.That is, each periphery pieces 34B is in The mode that 1st half pieces 34a of centre pieces 34A sides is longer than the 2nd half pieces 34b staple length plants hair.

Specifically, as shown in figure 9, periphery pieces 34B, it passes through the quilt of flat wire 35 between being clipped in the pieces that a folding is two It is embedded into the 1st plant pore 19A and is implanted, on the 1st half pieces 34a and the 2nd half pieces 34b that folder flat wire 35 is formed It is provided with staple length difference M.

According to the toothbrush 30 of present embodiment, without in order to adjust the shearing hair process of periphery pieces 34B staple length In the case of complete, so manufacturing process can be simplified.Even if without it is such shearing hair process, also with aforementioned embodiments Equally, the cheese brush that central pieces 34A is convex can be formed.This is effective when forming periphery pieces 34B by ST hairs 's.

In present embodiment, when using staggered row avenue system hair in all pieces 34B outside, preferably make to be formed by being staggered The 1st half pieces 34a and the 2nd half pieces 34b staple length difference M in the range of 1mm~3mm.Staple length difference is difficult when within 1mm To feel the effect of staggered row avenue system hair really.In addition, when staple length difference is more than 3mm, become bright due to differential in the pieces 34B of periphery Aobvious, the contact sense to gum reduces.

Embodiment

Hereinafter, the present invention is illustrated according to embodiment, but the present invention is not limited to following records.

(making of the toothbrush of embodiment 1~6 and comparative example 1~3)

Under the conditions shown in Table 1, as the toothbrush shown in Fig. 1~Fig. 5, toothbrush C1~C6 of making embodiment 1~6.In addition, Under the conditions shown in Table 2, toothbrush D1~D3 of comparison example 1~3.

In embodiment 4, central pieces is used as using broad wool.

In embodiment 5, make a diameter of below 2.0mm of periphery pieces 1.7mm.

In embodiment 6, in central pieces and periphery pieces, make diameter in more than 2.0mm.

In comparative example 1, make the diameter of central pieces bigger than the diameter of periphery pieces.

In comparative example 2, the high-quality green tea for making periphery pieces is flat pattern as central pieces.

In comparative example 3,2 beam center pieces are set, multi beam periphery pieces is set in a manner of around them.

[table 1]

[table 2]

In toothbrush C1~C6 of embodiment 1~6 and toothbrush D1~D3 of comparative example 1~3, for locally brushing the cleaning swept True feeling, the soft contact sense to gum and intraoral operability are evaluated respectively.

In evaluation, using true feeling " when especially good " be ◎+, " when good " be ◎, and " when substantially good " is zero, " little When good " be △, " when not good " for ×.

The results are shown in table 1.

As shown in table 1, it is known that in the case where the brush that is configured at for periphery pieces around central pieces is formed, when for During condition shown in embodiment 1, on locally brushing the cleaning true feeling swept, to the soft contact sense of gum and intraoral behaviour The property made, good result is obtained respectively.

In embodiment 2, due to make periphery pieces to the inclined composition of central pieces, so bristle in high-quality green tea part Density is improved, and the contact sense to gum is further increased compared to embodiment 1.

In embodiment 3, due to staggered row avenue system hair periphery pieces, so the same of ST hairs can be used in all pieces outside When, the inclination in high-quality green tea is maintained, is formed as the convex domed shape in center in the same manner as in Example 1.It follows that locally brush the cleaning swept True feeling and contact sense to gum further improve compared to embodiment 1.

It can be seen from embodiment 4, it is known to use during bristle of the 6mil broad wool as central pieces, swept as local brush Clean true feeling, the soft contact sense to gum can be reduced somewhat.

In embodiment 5, a diameter of 1.7mm of periphery pieces is smaller compared with embodiment, and the soft contact sense to gum is than real It is slightly poor to apply example 1.

In embodiment 6, because the diameter of central pieces and the diameter of periphery pieces are bigger than other embodiments, so to tooth The soft contact sense of gum is excellent, but the particularly central pieces in brush top is difficult to enter cleaning part.In addition, the chi of brushhead Very little is head length 18mm, brush head width 15mm, more than embodiment 1.Understand accordingly, from as locally brush the cleaning true feeling swept with And from the point of view of operability, it is slightly poorer than embodiment 1.

In addition, as shown in table 2, it can be seen from comparative example 1, because the diameter of central pieces is bigger than periphery pieces, so Brush top is difficult to enter in cleaning part, so from the point of view of true feeling, contact sense is cleaned, it is more far short of what is expected than embodiment 1.

It can be seen from comparative example 2, central pieces and periphery pieces are arranged to equal staple length, pieces flat on the whole is made Shape, be not suitable for local brush and sweep, it is virtually impossible to obtain and clean true feeling.

In comparative example 3, ellipticity sets periphery pieces around 2 beam center pieces, and brush top is difficult to enter cleaning part. In addition, the head length in brushhead is 17mm, more than embodiment 1.Understand accordingly, clean true feeling, contact sense and operational ratio Embodiment 1 is far short of what is expected.

(the cleaning true feeling of teeth space)

From the result of comparative example 2, in the equal flat pattern of the staple length for central pieces and periphery pieces, it is virtually impossible to Obtain as locally brushing the cleaning true feeling swept.

(evaluation that the soft contact to gum is felt)

It is identical with the diameter of periphery pieces or than it in the diameter of central pieces from the result of comparative example 1 and comparative example 3 When bigger, the soft contact sense to gum reduces.In addition, according to embodiment 6 it is recognized that while central pieces is than periphery pieces Diameter is smaller, but because compared with other embodiment, each diameter itself of central pieces and periphery pieces is larger, so Reduced as the cleaning true feeling swept locally is brushed.

(intraoral operational evaluation)

It can determine that by the result of embodiment 6 and comparative example 3, when the shape of brushhead becomes big, intraoral operability reduces.

According to above-mentioned evaluation, in order to ensure soft contact sense of the toothbrush to gum, preferably make the thickness (hair of periphery pieces Beam diameter) in more than 2.0mm.The upper limit especially be present for the thickness of periphery pieces, consider from operational point of view, preferably do not surpass Cross 2.2mm.On the other hand, on periphery pieces thickness lower limit, if bigger than the thickness of central pieces, do not limit especially System, and in order to ensure the contact sense to gum, preferably diameter is in more than 1.4mm.Now, it is also desirable to be largely provided with configured hair Beam number, to cause the distance between the pieces of periphery not broaden.Distance between pieces is the immediate adjacent hole for planting pore Intermarginal distance, preferably in more than 0.4mm and below 0.7mm.When distance is less than 0.4mm between peritreme, from the intensity of brushhead Degree considers, becomes uneasy.In addition, when distance is bigger than 0.7mm between peritreme, the curved deflection of integrated pieces is difficult.

, can be in order to according to user's gum portion as common toothbrush on the thickness for the bristle for forming pieces Symptom adjust the hardness of brush, and suitably selected.However, in order to ensure the contact sense to gum and as toothbrush Quality, preferably pieces thickness in periphery is in the range of 3mil~6mil.When the thickness of bristle is less than 3mil, the self-support of pieces with And durability is deteriorated.In addition, the thickness of bristle is in more than 6mil, it is difficult to ensures contact sense.

On the thickness for the bristle for forming central pieces, due to the cleaning in order to ensure gum portion, it is necessary to certain journey The hair rigidity of degree, so it is preferred that in more than 4mil.On the upper limit, in order to not damage gum, and preferably more than 8mil.

In addition, from the point of view of intraoral operability, the head length and brush head width of brushhead preferably exist Below 16mm.

More than, with reference to apposition accompanying drawing while, to the present invention suitable embodiment illustrate, but the present invention not It is limited to involved example from need not say.As long as those skilled in the art, can be apparently in Patent right requirement In the range of technological thought described in book, it becomes possible to expect various variation or modification, and can be understood as them Belong to the technical scope of the present invention in the nature of things.

For example, in foregoing each embodiment, one layer of periphery pieces is provided with around central pieces although illustrating Form, but may also set up multilayer periphery pieces.

Planted in pore to plant hair the composition that is formed, but be not limited to by the way that flat wire is embedded in addition, though illustrating This.As the fur planting method of pieces, in addition to flat wire type plants hair method, can also include：Using pieces lower end press-in as It is fixed in the molten resin of brushhead to heat method, formed in the lower end of heating pieces after molten mass and note molten resin Enter (in-mold) method etc. in the mould for plant hair portion being shaped in mould.

Claims (11)

1. A kind of 1. toothbrush, it is characterised in that

   It is circular brushhead to be included in plan view, and the brushhead has the 1st pieces on hair side is planted and is configured at institute State the pieces of multi beam the 2nd that around the 1st pieces and diameter is bigger than the 1st pieces；

   The top of 1st pieces protrudes than the top of the pieces of multi beam the 2nd.
2. 2. toothbrush according to claim 1, it is characterised in that

   Centered on the 1st pieces, while the pieces of multi beam the 2nd is configured with concentric circles, relative to the plant hair The normal direction in face, the pieces of multi beam the 2nd tilt to the 1st pieces.
3. 3. toothbrush according to claim 2, it is characterised in that

   2nd pieces is relative to the angle of inclination of the normal direction of the plant hair side below 10 degree.
4. 4. according to toothbrush according to any one of claims 1 to 3, it is characterised in that

   The staple length of the bristle of 2nd pieces on the outside of the brushhead towards the 1st pieces and it is progressively longer.
5. 5. according to toothbrush according to any one of claims 1 to 3, it is characterised in that

   1st pieces is embedded in by the flat wire between being clipped in the pieces that a folding is two and is arranged on the plant hair side It is implanted in 1st plant pore,

   2nd pieces is embedded in by the flat wire between being clipped in the pieces that a folding is two and is arranged on the plant hair side It is implanted in 2nd plant pore,

   1st pieces and the 2nd pieces the 1st half pieces formed and are provided with the 2nd half pieces pressing from both sides the flat wire Staple length is poor.
6. 6. toothbrush according to claim 5, it is characterised in that

   Described 2nd plants the diameter of pore in more than 2mm.
7. 7. the toothbrush according to claim 5 or 6, it is characterised in that

   Described 1st, which plants pore and the multiple 2nd, plants in pore, and distance exists between the peritreme between immediate plant pore More than 0.4mm and below 0.7mm.
8. 8. according to toothbrush according to any one of claims 1 to 7, it is characterised in that

   The staple length difference of 1st half pieces and the 2nd half pieces is in more than 1mm and below 3mm scope.
9. 9. according to toothbrush according to any one of claims 1 to 8, it is characterised in that

   The 2nd pieces being provided with more than 5 beams.
10. 10. according to toothbrush according to any one of claims 1 to 9, it is characterised in that

    1st pieces is made up of ST bristles.
11. 11. according to toothbrush according to any one of claims 1 to 10, it is characterised in that the head length of the brushhead and The size of the brush head width on direction intersected with the head length is in below 16mm.