KR101477326B1

KR101477326B1 - Toothbrush

Info

Publication number: KR101477326B1
Application number: KR1020107015197A
Authority: KR
Inventors: 테츠야 아베
Original assignee: 라이온 가부시키가이샤
Priority date: 2007-12-18
Filing date: 2008-12-18
Publication date: 2014-12-29
Also published as: JP5130304B2; CN101932264B; WO2009078463A1; JPWO2009078463A1; KR20100099272A; CN101932264A

Abstract

This toothbrush has a plurality of hair-removal holes 7 arranged at predetermined intervals in the longitudinal direction and the width direction of the head portion 3 on the hair removal surface 3a of the head portion 3, , There is a pattern of hair-like hair that is easy to pend in one direction. The straight line 8 of one of the mother lines 6A and 6B and the straight line 8 of the other line 6B of the mother lines 6A and 6B adjacent to each other in the longitudinal direction and the width direction of the head portion 3, And the tilting directions of the flat lines 8 are set to be opposite to each other so that the widths of the one mother lobe 6A and the one mother lobe 6B in each of the longitudinal direction and the width direction of the head portion 3 And the other comb teeth 6B are alternately arranged.

Description

Toothbrush {TOOTHBRUSH}

The present invention relates to an improvement of a toothbrush.

The present application claims priority based on Japanese Patent Application No. 2007-326041 filed on December 18, 2007, the contents of which are incorporated herein by reference.

The basic functions of the toothbrush include a cleaning effect and a massage effect in the oral cavity. Background Art [0002] In order to improve the basic functions of toothbrushes, toothbrushes have been added with interdental penetration, cleaning sensation, massage, and the like. In order to increase the value of such a toothbrush, it is generally effective to combine the arrangement and shape of the hair-removal holes, the type and shape of the brush, and the hair-cutting shape of the hair bundle (See, for example, Patent Documents 1 to 5).

For example, in order to improve the "cleaning feeling of the entire oral cavity", which is the basic performance of the toothbrush, it is usually necessary to secure the brush feel by contacting the bristles of the toothbrush worn on the head of the toothbrush with a suitable pressure on the tooth surface have. For this purpose, it is generally effective to use a so-called " tight hair " specification which secures a large number of hair pieces worn on the hair wool surface of the head portion and the number of hair wool per unit wool hair surface area. Thereby, it is possible to make the bristles come into contact with the part to be wiped at all times at the time of brushing, and it is easy to obtain the brush feel by the quickness of the appropriate bristles (bristles).

However, in the case of using such an eyelash specification, since the hair tends to be hard to bend in general, it is likely to become a so-called " stiffness " toothbrush. In addition, with respect to narrow and trailing portions such as the interdental portion and the cervical portion, the hair closely in close contact with each other becomes a barrier, which tends to impair the ability to enter the mothers.

In order to solve this problem, there is a method in which irregularities are imparted to the tip of the hair as a mother cutting shape. In order to realize the effect, a relatively large and sharp irregular shape such as a mountain cutting shape is imparted to the tip of the hair There is a need. On the other hand, such a shape tends to deteriorate the cleansing property of the entire oral cavity, although it improves the cleansing property of the interdental space. In addition, when the shape of the busbars constituting the parent blade is sharpened, the entry of the busbars into the interdental space and the cervical part improves. However, since the pliability of the brushes themselves is weakened, It tends to be difficult to improve itself.

Patent Document 1: Japanese Patent Application Laid-Open No. 2000-33010

Patent Document 2: JP-A-2-98310

Patent Document 3: Japanese Patent Application Laid-Open No. 10-313946

Patent Document 4: Japanese Patent No. 3813734

Patent Document 5: Japanese Patent No. 3311991

SUMMARY OF THE INVENTION The present invention has been made in view of such conventional circumstances, and it is an object of the present invention to provide a cleaning method and a cleaning method for a cleaning tool, A toothbrush capable of securing a toothbrush can be obtained.

In order to achieve this object, the invention of the present invention is characterized in that a plurality of hair-removal holes are provided on the hair-removal surface at a predetermined interval in the longitudinal direction and the width direction, and the hair- A toothbrush of the present invention is a toothbrush using a toothbrush in which at least a part of a hair-removal hole of a head portion is formed with a hair-like hair-like body that is easy to bend in one direction. In a hair- And the flat lines of the other hair line are arranged at a predetermined angle with respect to the directions in which the hair lines are arranged and the tilting directions of the flat lines are set in the opposite directions, , And one of the hair spots and the other hair spots are alternately arranged.

In this toothbrush, the cross-section of each of the chain saws constituting the parent blade has a rectangular shape, a parallelogram shape, a rhombic shape, or a similar shape so that the toothbrush has a longest side or a direction orthogonal to the longest diagonal line in the cross- May coincide with the one direction.

Further, in the toothbrush, each chain constituting the hair bundle may be stuck to the hair-removal hole in a state in which the one direction coincides with the other.

In this toothbrush, the tilting angle of the plain line of the hairline may be set within a range in which an angle made by one direction with respect to the direction in which the hair line is 20 to 70 degrees.

As described above, according to the toothbrush of the present invention, the mother hair of a single hair is bent in at least a part of the hair-removal holes of the head portion so as to be easily bent in one direction, so that the anisotropy You can have it.

In this toothbrush, a flat line of one hairline and a flat line of the other hairline are arranged at a predetermined angle with respect to a direction in which the hairline is arranged, and at the same time, By setting the tilting direction of the flat line in the reverse direction, one mother lobe and the other lobe are alternately arranged in the longitudinal direction and the width direction of the head portion.

In this case, when the toothbrush is crushed toward one side or the other side in the longitudinal direction or the width direction of the head by the difference between the anisotropy of the hair and the tilting direction of the flat lines of the hair, In this case, the part where the hair is dense and the part where the neighboring hair is bent in the direction in which the neighboring hair is separated is temporarily generated. In addition, the portions where these hair pieces are dense or crimped occur alternately in a predetermined position in the longitudinal direction or the width direction of the head portion, irrespective of the direction in which the toothbrush is crushed.

As a result, in the toothbrush of the present invention, the hair adjacent to the tooth during tooth firing is less likely to interfere with the tooth, and the moth line moves relatively freely while following the concavo-convex shape of the tooth, so that the entry into the narrow, Can be increased. Further, even in the case of the clogging specification which is easy to be felt as " hardening ", the cleaning operation can be easily performed without excessively increasing the pressure required for the crushing.

INDUSTRIAL APPLICABILITY As described above, according to the toothbrush of the present invention, it is possible to sufficiently secure the cleaning property to the portions where the entry of the bosom into the interdental space or the cervical portion is poor even in the case of the cleansing specification which can obtain a high cleaning feeling.

1 is a side view showing an example of a toothbrush of the present invention.
Fig. 2 is a side view of the head portion of the toothbrush shown in Fig. 1, partially cut away. Fig.
3 is a plan view showing the head portion of the toothbrush shown in Fig.
Fig. 4 is a plan view showing the mother-of-pearl mother-of-pearl shown in Fig.
Fig. 5A is a plan view for explaining a warping direction of a neighboring hair of the head portion shown in Fig. 3; Fig.
Fig. 5B is a plan view for explaining the bending direction of the neighboring hair of the head portion shown in Fig. 3; Fig.
Fig. 6 is a plan view showing a mother-of-pearl mother board different from that shown in Fig. 4; Fig.
Fig. 7 is a plan view showing a head portion having a mother-of-pillar-shaped pattern shown in Fig. 6; Fig.
8A is a plan view for explaining the bending direction of the neighboring hair of the head portion shown in Fig.
Fig. 8B is a plan view for explaining the bending direction of the neighboring hair of the head portion shown in Fig. 7; Fig.

Hereinafter, the toothbrush of the present invention will be described in detail with reference to the drawings.

In the drawings used in the following description, for the sake of clarity, the features are schematically shown for the sake of convenience, and the dimensional ratios and the like of the respective components are not limited to the actual ones. In addition, it is assumed that the mother city is omitted in some cases.

One embodiment of the present invention will be described. The brush handle 1A shown in Fig. 1 is provided with a brush handle 1A having a long shape as a whole. The brush handle 1A has an elongated handle portion 2, And a neck portion 4 provided between the handle portion 2 and the head portion 3. The head portion 3 is provided at the tip end side of the head portion 2,

The brush handle 1A is formed by integrally molding the handle portion 2, the neck portion 4 following the neck portion 4, and the head portion 3 following the handle portion 2 by, for example, a hard resin material. Examples of the hard resin material used for the brush handle 1A include polypropylene, polyethylene, polyethylene terephthalate, polycyclohexylenedimethylene terephthalate, saturated polyester resin, polymethyl methacrylate, cellulose propionate, poly Urethane, polyamide, and ABS (acrylonitrile-butadiene-styrene). However, the material is not necessarily limited to these materials.

The handle portion 2 is a portion gripped by the user. To improve gripping performance, a flexible resin such as elastomer may be partially or entirely coated on the handle portion 2. The neck portion 4 is a portion connecting between the handle portion 2 and the head portion 3 but is not necessarily clearly distinguished from the handle portion 2 and the head portion 3, There is also a case in which the handle portion 2 and the neck portion 4 are not distinguished. Therefore, the brush handle 1A may be of a shape in which the head portion 3 is directly provided at the tip of the handle portion 2, and the shape, size, design, and the like can be arbitrarily changed.

As shown in Fig. 2 and Fig. 3, the head portion 3 is not particularly limited as long as it is easy to clean the inside of the oral cavity and has a size, but generally has a generally rectangular parallelepiped shape . A plurality of hair-removal holes 7 are provided on one side of the head portion 3 (hereinafter referred to as a hair-cleaning surface) for setting the hair 6 of the bristles 5.

3, a plurality of hair-removal holes 7 are formed in a lattice shape, that is, in the longitudinal direction and the width direction of the head portion 3 A plurality of hair-removal holes 7 are arranged linearly at regular intervals.

In addition, the cross-sectional shape of the hair-removal hole 7 is not necessarily limited, but is generally circular. It is preferable that the diameter of the hair-removing bore 7 is 1.0 mm or more in the case of the eyelash specification. By doing so, it is possible to ensure a robust firm feeling required of the clay-polishing specification. The upper limit of the hole diameter is not particularly limited as long as the quality such as the feeling of use and the strength of the head portion 3 is ensured. This is because, in order to secure a high firm feel feeling, a negative effect which is likely to occur in a specification in which a hole diameter is generally increased, for example, a rough cleaning feeling due to the difficulty of bending the bodily being, And easy tendency can be alleviated by the present invention.

Further, if the distance between the adjacent hair-removal holes 7 becomes too wide, the effect caused by the behavior of the hair-like hair 6, which will be described later, of the present invention is deteriorated. Therefore, it is preferable that the distance between the adjacent hairpin holes 7 (the innermost distance between the hairpin holes) is made small within a range in which the strength of the head part 3 can be ensured in the case of the eyelash specification, It is preferable that the thickness is in the range of 0.6 to 1.0 mm.

As shown in Fig. 2, the mother blade 6 is formed by bundling a plurality of bristles (filaments) 5 into two pieces, folding them into two pieces, sandwiching a releasing portion called a flat line 8 therebetween, Type (implantation).

The material of the brush 5 is not particularly limited and examples thereof include polyamides (e.g., 6-12 nylon, 6-10 nylon), polyesters (e.g., polyethylene terephthalate, polybutylene terephthalate, poly And synthetic resin materials such as polyolefins (e.g., polypropylene) and elastomers (e.g., olefins and styrenes).

As for the bristles 5, the bristles 5 may be substantially the same in cross-sectional shape orthogonal to the major axis direction, or may be formed by rounding the bristles, Or the like may be used.

It is preferable that the hair length of the bristles 5 is 8 mm to 13 mm for adults and 6 mm to 9 mm for children, from the eating surface 3a of the head part 3. It is preferable that the thickness (maximum diameter) of the brush 5 is 0.12 mm to 0.26 mm in terms of usability in the oral cavity and feeling of use. Further, a plurality of chain saws having different thicknesses may be arbitrarily combined in consideration of feeling of use, chain sawing, cleaning effect, durability, and the like.

The flat line 8 passes through the central portion of the flocking hole 7 and is placed in the flocking hole 7 so as to cross the flocking hole 7. Examples of the material of the flat wire 8 include metals such as brass and stainless steel, and hard plastic and biodegradable plastic. The flat line 8 has a length larger than the diameter of the flatting hole 7 and a width smaller than the depth of the flatting hole 7. The length, width, and thickness of the flat line 8 may be arbitrarily adjusted in accordance with the flatting hole 7 and the blunt hair 6. Particularly, by controlling the thickness of the flat line 8, the fine line 6 can be securely fixed in the flatting hole 7, so that the air gap can be reduced. It is preferable that the total length of the portions of the flat lines 8 projecting from both sides of the hair-removal holes 7 is 0.3 to 0.6 mm in order to prevent detachment from the hair-removal holes 7.

By the way, the mother wire 6 of the bristles 5 is stitched on each knock hole 7 arranged in the longitudinal direction and the width direction of the head part 3 so as to be easily bent in one direction. More specifically, as shown in Fig. 4, the mother wire 6 is formed by bundling a plurality of rectangular bristles 5A each having a rectangular cross section in a bundle and folding them into two pieces. The flat wire 8 sandwiched therebetween is folded And is formed in the hole 7 by a type box in the hole 7.

The bristles 5A have such a cross-sectional shape, so that the direction orthogonal to the longest side in the cross-section is the one direction, that is, the easy-to-bend direction. Conversely, in the other direction orthogonal to the one direction, the bristles 5A are harder to warp than the one direction. Each of the bristles 5A constituting the mother wire 6 is stitched on the knock hole 7 in a state in which the one direction is aligned with the other. That is, each of the bristles 5A constituting the parent blade 6 is arranged in the knife hole 7 while aligning with each other in a direction parallel to the longest horizontal line 8 in the cross section.

4) is hardly bent in the direction (the other direction) x parallel to the flat line 8 and is hardly bent in the direction (one direction) perpendicular to the flat line 8 in the mother line 6 made of the bristles 5A shown in Fig. It is possible to have the anisotropy that it is easy to bend in the direction (y).

As shown in Figs. 3 and 5, on the meatal surface 3a of the head part 3, one of the mother lines 6A and 6B neighboring in the longitudinal direction and the width direction of the head part 3, 6A and 6B are arranged obliquely at a predetermined angle with respect to the neighboring directions of the blind spots 6A and 6B and the flat lines 8 of the other blind spots 6B are arranged obliquely with respect to the neighboring directions of the blind spots 6A and 6B, The one mother lobe 6A and the other mother lobe 6B are alternately arranged in the longitudinal direction and the width direction of the head part 3 by setting the tilting direction of the head part 3 in the reverse direction. That is, flat lines 8 are arranged obliquely at predetermined angles with respect to the arranging direction in the longitudinal direction and the width direction of the head part 3, And one of the two mother lobes 6A and 6B, which are arranged in the opposite directions to each other, are alternately arranged.

In this toothbrush 1, the inclination angle of the flat line 8 of the mother line 6 is set so that the angle formed by the one direction y with respect to the direction in which the mother line 6 is arranged is 45 ° have. Concretely, the respective mother lines 6A, 6B arranged in the longitudinal direction and the width direction of the head portion 3 are connected to the line 8 of the adjacent mother line 6A and the mother line 6B, Are inclined at an angle of 45 DEG with respect to the direction in which they are arranged in opposite directions to each other.

In addition, in addition to the flocked holes 7 arranged in a lattice form of 4 x 6, the head portion 3 of the head portion 3 shown in Fig. At the front end portion and the rear end portion, three flat mouth holes 7 are arranged in the width direction. Since the known hair shaft 6 is formed separately from the hair blades 6A and 6B in these hair-removal holes 7, there is no particular limitation on the direction of the flat lines. Therefore, in FIG. 3, the plain line 8 of the mother line 6 worn on these hair-removal holes 7 is omitted.

In the toothbrush 1 having the above-described structure, as shown in Fig. 4 described above, in each of the hair-removal holes 7 arranged in the longitudinal direction and the width direction of the head portion 3, anisotropy can be imparted to the state in which each mother wire 6 is bent by expressing the mother wire 6 of the daughter wire 5A which is easily pliable in the other direction (x).

3, among the mother lines 6A and 6B adjacent to each other in the longitudinal direction and the width direction of the head portion 3, the toothbrush 1 has the line 8 of the mother line 6A And the flat lines 8 of the other side blades 6B are arranged at a predetermined angle with respect to the direction in which the blades 6A and 6B are arranged and the tilting direction of the flat lines 8 is set in the reverse direction The one mother lobe 6A and the other mother lobe 6B are alternately arranged in the longitudinal direction and the width direction of the head part 3. [ In this toothbrush 1, the straight line 8 of the parent lines 6A and 6B is tilted so that the angle formed by the one direction y with respect to the arraying direction of the parent lines 6A and 6B is 45 ° An angle (the predetermined angle) is set.

In this case, due to the difference between the anisotropy of the mother line 6 and the tilting direction of the line 8 of the mother line 6, as shown in Fig. 5A, the mother lines 6A, (6A, 6B) in a direction in which neighboring mother lines (6A, 6B) are close to each other when the mother louvers (6A, 6B) are bent toward one side And the portion (beta) where the parent lines 6A and 6B are formed by the neighboring parent lines 6A and 6B in the direction in which they are separated from each other are temporarily generated.

On the other hand, as shown in Fig. 5B, when the mother yarns 6A and 6B are warped toward the other side in the longitudinal direction or the width direction of the head part 3 (in the direction of the arrow B in the drawing) The portions where the mother lines 6A and 6B are dense or crimped are the same as the positions when the mother lines 6A and 6B are bent toward the direction of the arrow A and the mother lines 6A and 6B Are alternately arranged in a predetermined position in the longitudinal direction or the width direction of the head part 3 by the bending direction.

In such a toothbrush 1, since the mother lines 6A and 6B adjacent to each other at the time of tooth brushing are less likely to interfere with each other and the mother line moves relatively freely while following the concavo-convex shape of the teeth, It is possible to increase busability. In addition, even in the case of a clogging specification that is easy to be felt as " hardening ", it is possible to easily perform the cleaning operation without excessively increasing the pressure required for the clay.

Therefore, in this toothbrush 1, it is possible to sufficiently secure the cleaning property against the portions where the entry of the bite into the teeth, such as the interdental portion and the cervical portion, is poor even in the case of a cleansing specification capable of achieving high cleaning sensation.

Other embodiments of the present invention are described below. The same parts as those of the toothbrush 1 will not be described, and the same reference numerals will be used in the drawings.

In the head part 3, as the mother wire 6 of a single bristles 5 which is easily bent in one direction y, for example, as shown in Fig. 6, a plurality of bristles It is also possible to use the blunt spindle 9 worn on the knockout hole 7 by folding the knitting yarn 5B into two pieces and folding it into two pieces and then placing the flat wire 8 sandwiched therebetween in the knockout hole 7. [

Specifically, the toothbrush 5B has a rhombic cross-sectional shape so that the direction orthogonal to the longest diagonal line in the cross-section is the one direction y, that is, the direction in which it is easy to pivot. Conversely, in the other direction (x) orthogonal to the one direction (y), the bristles 5B are harder to warp than the one direction (y). Each of the bristles 5B constituting the mother yarn 9 is laid on the knife hole 7 in a state in which the one direction y is mutually aligned. That is, each of the bristles 5B constituting the bristle 9 is arranged in the bristle hole 7 while aligning with each other in a direction in which the longest transition in the cross-section is parallel to the flat line 8.

It is difficult to warp in the direction parallel to the longest diagonal line in the cross section of the bristles 5B (the other direction) x in the bristles 5B of the bristles 5B shown in Fig. 6, It is possible to have anisotropy that it is flexible in a direction (one direction) orthogonal to the longest diagonal line in the cross section.

6 has an acute angle of 60 ° and an obtuse angle of 120 °. However, if it is possible to provide anisotropy in a state in which the bristles 5B are bent, It is not necessarily limited, and it can be set at an arbitrary angle.

As shown in Fig. 7, one of the mother lines 9A and 9B adjacent to each other in the longitudinal direction and the width direction of the head portion 3 is provided on the meatal surface 3a of the head portion 3, 9B are arranged obliquely at a predetermined angle with respect to the neighboring directions of the blind spots 9A, 9B and the inclination direction of the flat lines 8 of the other side 9B One side of the main beam 9A and the other side of the main beam 9B are alternately arranged in the longitudinal direction and the width direction of the head portion 3 by setting them in the opposite directions.

In this toothbrush 1, the tilting angle of the flat line 8 of the blindfold 6 (the predetermined angle) is set such that the angle formed by the one direction y with respect to the direction in which the blindfold 6 is arranged is 60 °. Is set. Concretely, the respective mother lines 9A and 9B arranged in the longitudinal direction and the width direction of the head portion 3 are arranged in a line 8 of the neighboring mother line 9A and the neighboring mother line 9B, Of the head portion 3 are inclined at an angle of 60 degrees with respect to the longitudinal direction of the head portion 3 (30 degrees with respect to the width direction of the head portion 3).

In the case where the blast flux 9 of the bristles 5B is used, the blades 9A and 9B arranged in the longitudinal direction and the width direction of the head part 3 are arranged in a direction 9A and the flat lines 8 of the other comb line 9B are inclined at an angle of 30 DEG with respect to the longitudinal direction of the head portion 3 (60 DEG with respect to the width direction of the head portion 3) It is also possible. That is, the tilting angle of the flat line 8 when the blades 9 of the bristles 5B are used may be an angle corresponding to the cross-sectional shape of the bristles 5B.

8A, by using the difference between the anisotropy of the mother line 9 and the tilting direction of the line 8 of the mother line 9 when the mother line 9 of the bristles 5B is used, 9B are bent toward one side in the longitudinal direction or the width direction of the head portion 3 (direction of arrow A in the figure) at the time of tooth firing, the neighboring mother yarns 9A, A portion? In which the parent particles 9A and 9B are tightened in the direction of approaching each other and a portion? 1 in which the parent particles 9A and 9B are separated in the direction in which the neighboring parent particles 9A and 9B are separated from each other, ) Occurs temporarily.

On the other hand, as shown in Fig. 8B, when the mother yarns 9A and 9B are warped toward the other side in the longitudinal direction or the width direction of the head part 3 (in the direction of the arrow B in the drawing) The portions where the mother lines 9A and 9B are dense or crimped are the same as the positions when the mother lines 9A and 9B are bent toward the direction of the arrow A and the mother lines 9A and 9B, Are alternately arranged in a predetermined position in the longitudinal direction or the width direction of the head portion 3 by the bending direction.

In such a toothbrush 1, since the mother lobes 9A and 9B adjacent to each other at the time of the tooth closure are less likely to interfere with each other and the mother line moves relatively freely while following the concavo-convex shape of the teeth, It is possible to increase busability. In addition, even in the case of a clogging specification that is easy to be felt as " hardening ", it is possible to easily perform the cleaning operation without excessively increasing the pressure required for the clay.

Therefore, even in this case, even in the case of a cleansing specification capable of achieving a high cleaning sensation, it is possible to sufficiently secure the cleansing property to the portion where the entry of the bosom into the interdental region and the cervical region becomes worse.

Further, in the present invention, the bristles 5A which are easily bent in one direction as described above are not limited to the bristles 5A having a rectangular cross section or the bristles 5B having a rhombic cross section, (Including, for example, elliptical or the like) may be used. It is also possible to make an anisotropy in the state of warping of the mother line 6 by using a mother line mother line in which the direction orthogonal to the longest side or the longest diagonal line in the cross section coincides with the one direction.

The inclination angle of the flat line 8 of the mother line 6 is set to be such that the angle formed by the one direction y with respect to the direction in which the above- However, in order to generate the portions (?,?) In which the above-described mother lines 6A, 6B become dense, it is necessary to set one It is preferable to set the tilting angle (the predetermined angle) of the flat line of the mother line 6 in a range where the angle formed by the direction of the line 6 is 20 to 70 degrees.

Further, the present invention is not limited to the toothbrush 1 described above, but can be applied to an electrically driven electric toothbrush, a replacement brush, and the like. Further, the present invention is not limited to brushes for oral use such as toothbrushes, but it is possible to apply widely to a brush bristled with two bristles of a bristle and bristles between bristles.

In addition, the present invention is not necessarily limited to the configuration of the toothbrush 1, but various modifications can be made within the scope of the present invention.

(Industrial availability)

In the toothbrush of the present invention, at least a part of the hair-removal holes arranged in the longitudinal direction and the width direction of the head portion are shaped in a single direction so as to be easily bent in one direction so as to have anisotropy in the bending state of these hair- .

In addition, in the toothbrush of the present invention, since the mother adjacent to the toothpicker is difficult to interfere with the teeth, and the motherboard moves relatively freely while following the concavo-convex shape of the teeth, the ability to enter the narrow and backward areas such as the interdental space and the cervical portion It is possible to heighten. Further, even in the case of the clogging specification which is easy to be felt as " hardening ", the cleaning operation can be easily performed without excessively increasing the pressure required for the crushing. Therefore, even in the case of the eyelashes which can obtain a high cleaning sensation, the cleaning property for the portion where the entry of the bite into the interdental region, the cervical region, etc. is poor can be sufficiently secured.

1: toothbrush 1A: brush handle
2: handle portion 3: head portion
3a: Expression core 4: Neck part
5, 5A, 5B: Rinse 6:
6A: one side 6B: another side
7: bristle hole 8: flat
9: Moral code 9A: Moral of one side
9B: The other side

Claims

1. A toothbrush which has a head portion in which a plurality of hair-removal holes are arranged at predetermined intervals in a longitudinal direction and a width direction, and which are folded in two,
Wherein at least a part of the hair-removal hole of the head portion has a rectangular cross-section, a parallelogram shape, a rhombic shape, or a shape similar thereto, the cross-sectional surface having a cross- Inside,
The flat line of one hairline and the flat line of the other hairline are arranged obliquely at a predetermined angle with respect to the direction in which the hairline is arranged in the hairline neighboring in the longitudinal direction and the width direction of the head portion, Wherein the first hair shaft and the second hair shaft are alternately arranged in the longitudinal direction and the width direction of the head unit by setting the opposite direction in the longitudinal direction and the width direction of the head unit.

delete

The method according to claim 1,
Wherein each of the chain shafts constituting the mother ship has the one direction coinciding with the other.

The method according to claim 1,
Wherein the angle formed by the one direction with respect to the direction in which the hair is arranged is 20 ° to 70 °.