JP2013202341A - Bristle hardness-adjusting element for toothbrush and toothbrush with bristle hardness-adjusting element - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a toothbrush capable of properly cleaning an oral cavity according to states of a part to be cleaned and the oral cavity.SOLUTION: A bristle adjustment element for a toothbrush is detachably attached to a bristle-implantation surface 15 of a head portion 14 of a toothbrush 10 for adjusting a height of a tuft 16. When the bristle adjustment element is attached to the bristle-implantation surface 15, it is preferable that a through-hole 24 through which the tuft 16 passes is formed, an end 25 of an opening surface of the through-hole 24 is brought into contact with a side surface of the tuft 16, and the bristle adjustment element may be slid on the bristle-implantation surface 15 and attached to the bristle-implantation surface 15. In addition, it is preferable that the bristle adjustment element is slid on the bristle-implantation surface 15 and attached to the bristle-implantation surface 15, two or more through-holes 24 are formed, and a slit portion 32 extending in a direction in which the bristle adjustment element is slid and communicating with the through-holes 24 is formed.

Description

  The present invention relates to a bristle waist adjustment member for a toothbrush and a toothbrush with a bristle waist adjustment member.

The bristle hardness of toothbrushes is classified into three types of “Kai”, “Normal”, and “Soft Kame” defined by the Household Goods Quality Labeling Law. And the user purchases the toothbrush of favorite bristle stiffness according to own liking and the state in an oral cavity, and wash | cleans the oral cavity.
In general, “clean” toothbrushes with higher brushing force are suitable for cleaning the tooth surface and occlusal surface, and for cleaning narrow parts such as the cervical and interdental parts, bristle It is said that a “soft” toothbrush that is easy to bend is suitable.
In addition, patients with periodontal disease tend to prefer “soft” toothbrushes to reduce pain during cleaning, but when symptoms improve, they have higher brushing power. It is necessary to clean the oral cavity with a toothbrush.

Thus, in order to properly clean the inside of the oral cavity, it is necessary to use a toothbrush with an appropriate bristle hardness according to the site to be cleaned and the state in the oral cavity, and multiple types with different bristle stiffness It is effective to use different toothbrushes.
However, properly using a plurality of types of toothbrushes at the time of cleaning once is troublesome and complicated in each operation such as applying a dentifrice or washing a toothbrush after use. In addition, each time the inside of the oral cavity is cleaned, there is a problem that a plurality of types of toothbrushes must be prepared in order to use a bristle stiffness toothbrush suitable for the condition in the oral cavity.

 Conventionally, in a toothbrush in which a plurality of bristle bundles of bristles with a thickness of 120 μm or less are planted on a flocking table, each bristles bundle is formed on an elastic cylindrical body in which a portion excluding the tip portion is arranged to protrude from the flocking table. There has been proposed a toothbrush that is inserted in a state of being covered with the elastic cylindrical body (for example, Patent Document 1). According to the invention of Patent Document 1, it is possible to clean with a soft touch with a thin bristle and to clean with moderate bristle hardness with an elastic cylindrical body.

JP 2002-345560 A

However, in the invention of Patent Document 1, although the softness of the hit feeling can be increased, the stiffness of the hair and hips is arbitrary. It is necessary to select a toothbrush. That is, in the invention of Patent Document 1, the trouble of properly using a plurality of types of toothbrushes during cleaning is not solved.
Then, this invention aims at the toothbrush with a bristle waist adjustment member which can clean the inside of an oral cavity appropriately according to the site | part to be cleaned or the state in an oral cavity.

The bristle and waist adjustment member for a toothbrush of the present invention is detachably mounted on the flocked surface of the head part of the toothbrush and adjusts the height of the hair bundle.
When attached to the flocked surface, a through hole through which the hair bundle penetrates is formed, and it is preferable that a peripheral edge of an opening surface of the through hole is in contact with a side surface of the hair bundle, and is slid on the flocked surface. It may be attached to the flocked surface, slid on the flocked surface and attached to the flocked surface, and two or more through-holes are formed, extend in the sliding direction, and the through-holes are connected to each other. It is preferable that the slit part which connects is formed.

The toothbrush with a bristle and waist adjustment member of the present invention is characterized in that the bristle and waist adjustment member for the toothbrush of the present invention is provided.
A concave line extending in the sliding direction is formed in the head part, and a convex line corresponding to the shape of the concave line is formed in the hair waist adjusting member, or the head part has the above-mentioned It is preferable that a ridge extending in the sliding direction is formed, and a concave ridge according to the shape of the ridge is formed on the fur waist adjusting member.

The bristle and waist adjustment member for a toothbrush of the present invention is detachably attached to the flocked surface of the head part of the toothbrush and can adjust the height of the hair bundle, so that the hardness of the toothbrush can be adjusted. For this reason, a toothbrush can be adjusted to what can clean the inside of an oral cavity according to the site | part to be cleaned or the state in an oral cavity.
According to the bristle and waist adjustment member for a toothbrush of the present invention, a through-hole through which the bristles penetrate when formed on the flocked surface is formed, and the periphery of the opening surface of the through-hole is the side surface of the bristles Because it touches the hair, it is possible to adjust the bristle stiffness more appropriately.
According to the bristle and waist adjustment member for a toothbrush of the present invention, since it is slid on the flocked surface and attached to the flocked surface, it can be easily attached to the flocked surface.
According to the bristle and waist adjustment member for a toothbrush of the present invention, it is slid onto the flocked surface and attached to the flocked surface, two or more through holes are formed, and extend in the sliding direction. Since the slit part which connects through-holes is formed, it can mount | wear to a flocked surface more easily.

Since the toothbrush with a bristle and waist adjustment member of the present invention is provided with the bristle and waist adjustment member for the toothbrush of the present invention, the oral cavity can be appropriately cleaned according to the site to be cleaned and the state of the oral cavity.
According to the toothbrush with the bristle and waist adjustment member of the present invention, the head portion is formed with a concave line extending in the sliding direction, and the bristle and waist adjustment member has a convex line corresponding to the shape of the concave line. Is formed, or the head portion is formed with a ridge that extends in the sliding direction, and the hair and waist adjustment member is formed with a ridge according to the shape of the ridge, The wearing state of the hair and waist adjustment member can be further stabilized.

(A) It is a top view of the toothbrush with a bristle waist adjustment member concerning 1st embodiment of this invention. (B) It is B1-B1 sectional drawing of Fig.1 (a). (C) It is C1-C1 sectional drawing of Fig.1 (a). (A) It is a top view of the bristle waist adjustment member used for the toothbrush with a bristle waist adjustment member of FIG. (B) It is B2-B2 sectional drawing of Fig.2 (a). (C) It is C2-C2 sectional drawing of Fig.2 (a). (A) It is a top view of the toothbrush with a bristle waist adjustment member concerning 2nd embodiment of this invention. (B) It is B3-B3 sectional drawing of Fig.3 (a). (C) It is C3-C3 sectional drawing of Fig.3 (a). (A) It is a top view of the bristle waist adjustment member used for the toothbrush with a bristle waist adjustment member of FIG. (B) It is B4-B4 sectional drawing of Fig.4 (a). (C) It is C4-C4 sectional drawing of Fig.4 (a). (A) It is a top view of the toothbrush with a bristle and waist adjustment member concerning 3rd embodiment of this invention. (B) It is B5-B5 sectional drawing of Fig.5 (a). (C) It is C5-C5 sectional drawing of Fig.5 (a). (A) It is a top view of the toothbrush with a bristle and waist adjustment member concerning one Embodiment of this invention. (B) It is B6-B6 sectional drawing of Fig.6 (a). (C) It is C6-C6 sectional drawing of Fig.6 (a). (A) It is a top view of the bristle waist adjustment member used for the toothbrush with a bristle waist adjustment member of FIG. (B) It is B7-B7 sectional drawing of Fig.7 (a). (C) It is C7-C7 sectional drawing of Fig.7 (a). (A) It is a top view of the toothbrush with a bristle and waist adjustment member concerning one Embodiment of this invention. (B) It is B8-B8 sectional drawing of Fig.8 (a). (C) It is C8-C8 sectional drawing of Fig.8 (a). (A) It is a top view of the bristle waist adjustment member used for the toothbrush with a bristle waist adjustment member of FIG. (B) It is B9-B9 sectional drawing of Fig.9 (a). (C) It is C9-C9 sectional drawing of Fig.9 (a). It is a top view of a toothbrush with a bristle waist adjustment member concerning one embodiment of the present invention.

(First embodiment)
A toothbrush with a bristle and waist adjustment member according to a first embodiment of the present invention will be described below with reference to FIGS.
The toothbrush 1 with a bristle and waist adjustment member in FIG. 1 includes a toothbrush 10 and a bristle and waist adjustment member (hereinafter, simply referred to as a bristle and waist adjustment member) 20 for a toothbrush.

 The toothbrush 10 includes a handle body in which a long handle portion 12 and a head portion 14 provided at the distal end of the handle portion 12 are integrally formed, and a plurality of hair bundles implanted on a flocked surface 15 of the head portion 14. 16.

 In the present embodiment, the head portion 14 has a rectangular shape in plan view with the extending direction of the handle body as the longitudinal direction. The rectangle is a concept including a shape in which corners are formed by curves and straight lines at four corners. On the hair planting surface 15, 18 hair bundles 16 in which a plurality of hairs are bundled are planted in a grid pattern of 6 rows (length direction of the head portion) and 3 columns (width direction of the head portion).

 As shown in FIGS. 1 and 2, the fur-back adjusting member 20 includes a top wall portion 22 that covers the flocked surface 15, a bottom wall portion 28 that covers a surface (back surface) opposite to the flocked surface 15 in the head portion 14, and A tip wall portion 26 that covers the tip of the head portion 14 and is connected to the top wall portion 22 and the bottom wall portion 28, a surface (side surface) in the width direction of the head portion 14 that covers the top wall portion 22 and the bottom wall portion 28, A pair of side wall portions 30 connected to each other is integrally formed, and as a whole, is a substantially rectangular parallelepiped casing. An opening 21 is formed in the bristle and waist adjustment member 20, and the opening 21 is sized so that the head portion 14 can be taken in and out.

A through hole 24 through which the hair bundle 16 passes is formed in the top wall portion 22. In the present embodiment, the number of through holes 24 is the same as the number of hair bundles 16, and the through holes 24 are substantially similar to the cross section of the hair bundle 16.
The top wall portion 22 is formed with a slit portion 32 that starts from the opening portion 21 and communicates sequentially with the through holes 24 arranged in the column direction. By forming the slit portion 32, the fur-lumbar adjusting member 20 can be slid in the X direction (that is, the length direction of the head portion 14) and attached to the flocked surface 15. In other words, the slit portion 32 extends in the sliding direction when the hair waist adjusting member 20 is attached to the flocked surface 15.

The material of the handle body is determined in consideration of the rigidity and mechanical characteristics required for the toothbrush 1 with a bristle and waist adjustment member, and examples thereof include a hard resin having a flexural modulus (JIS K7203) of 500 to 3000 MPa.
Examples of the hard resin include polycyclohexylene dimethylene terephthalate (PCT), polyethylene terephthalate (PET), polystyrene (PS), acrylonitrile / butadiene / styrene resin (ABS), polycarbonate (PC), acrylonitrile / styrene copolymer resin ( AS), polyarylate and the like. These hard resins may be used alone or in a combination of two or more.

 The height H1 from the flocked surface 15 to the tip of the hair bundle 16 (hereinafter sometimes referred to as normal hair length) H1 is not particularly limited and is, for example, 6 to 13 mm. The normal hair length H1 of all the hair bundles 16 may be the same, or the normal hair length H1 may be different for each hair bundle 16.

 The thickness (hair bundle diameter) R1 of the hair bundle 16 on the flocked surface 15 is not particularly limited, and is, for example, 1 to 3 mm. The hair bundle diameter R1 of all the hair bundles 16 may be the same, or the hair bundle diameter R1 may be different for each hair bundle 16.

 Examples of the material for the hair constituting the hair bundle 16 include polyamide such as 6-12 nylon and 6-10 nylon, PET, polybutylene terephthalate (PBT), polytrimethylene terephthalate (PTT), polyethylene naphthalate (PEN). ), Polyesters such as polybutylene naphthalate (PBN), polyolefins such as PP, olefin elastomers, styrene elastomer (elastomer) resins, and the like. The bristles used for the toothbrush 1 may all be made of the same material, or two or more different types of bristles may be mixed.

 As the form of the hair, the hair (taper hair) whose diameter gradually decreases toward the hair tip, the hair (straight hair) whose outer diameter is substantially the same except for the rounded portion of the hair tip, the taper hair or Examples include branched hairs with straight hair ends branched. The bristles used for the toothbrush 1 may all have the same form, or two or more different forms of bristles may be mixed.

 The thickness of the hair is appropriately determined in consideration of the material of the hair, for example, when the cross section is circular, for example, 6 to 9 mil (1 mil = 1/1000 inch = 0.025 mm). Moreover, in consideration of a feeling of use, a feeling of cleaning, a cleaning effect, durability, and the like, a plurality of hairs having different thicknesses may be used in any combination.

 The manufacturing method of the toothbrush 1 can use a conventionally well-known method. For example, a handle body in which a flocked hole is formed on the flocked surface is obtained by injection molding, a flat wire is sandwiched between two folds of hair, and this flat wire is driven into the flocked hole to implant a hair bundle. Wire flocking, heat fusion method that presses and fixes the lower end of the hair bundle into the molten resin that becomes the flocked part, heats the lower end of the hair bundle to form a molten mass, and then puts the molten resin into the mold Examples thereof include an in-mold method for injecting and molding a flocked portion.

In this embodiment, the bristle and waist adjustment member 20 is formed by injection molding or the like of a soft resin.
The soft resin is not particularly limited as long as it expands and contracts after molding, and examples thereof include elastomers (for example, olefin elastomers, styrene elastomers, polyester elastomers, polyurethane thermoplastic elastomers, etc.) and silicone.
The soft resin may contain an adhesive modifier, a plasticizer, and the like as necessary.
The shore hardness A of the soft resin is preferably 90 or less, and more preferably 50-80. If the upper limit value is exceeded, it is difficult to attach the bristle waist adjustment member 20 to the flocked surface 15, and if it is less than the lower limit value, the bristle waist adjustment member 20 becomes too soft, and the bristle stiffness of the toothbrush 1 with the bristle waist adjustment member is reduced. It may not be possible to adjust properly.

The opening diameter r <b> 1 of the through hole 24 is appropriately determined according to the hair bundle diameter R <b> 1 of the hair bundle 16, and may have a size that allows the hair bundle 16 to pass through when the hair waist adjustment member 20 is mounted on the flocked surface 15. That's fine. The opening diameter r1 is such that the peripheral edge 25 of the opening surface of the through hole 24 is in contact with the side surface of the hair bundle 16 when the bristle and waist adjustment member 20 is attached to the flocked surface 15 (that is, the opening diameter r1 is equal to the hair bundle diameter R1). It may be the same size or the opening diameter r1 is smaller than the hair bundle diameter R1, and the peripheral edge 25 of the opening surface of the through hole 24 does not contact the side surface of the hair bundle 16 (that is, the opening diameter r1 is the hair). The size may be larger than the bundle diameter R1. Among them, from the viewpoint of more appropriately adjusting the bristle stiffness of the toothbrush 1 with a bristle and waist adjustment member, the opening diameter r1 is such that the peripheral edge 25 is the hair bundle 16 when the bristle waist adjustment member 20 is mounted on the flocked surface 15. A size in contact with the side surface is preferable.
In addition, when making opening diameter r1 into the magnitude | size which does not contact the side surface of the hair | bristle bundle 16, it is preferable that the clearance represented by r1-R1 is 0.1 mm or less. If the value exceeds the upper limit, the bristle hardness of the toothbrush 1 with the bristle waist adjustment member may not be appropriately adjusted. If the material of the bristle / lumbar adjusting member 20 is a resin having such a hardness that does not damage the hair during desorption, the opening diameter r1 may be smaller than the hair bundle diameter R1.

The thickness T1 of the top wall portion 22 is determined in consideration of the bristle stiffness and the normal bristle height H1 required for the toothbrush 1 with the bristle / lumbar adjusting member, and is, for example, 0.1 mm or more. This is because if it is less than the above lower limit value, it is difficult to obtain the effect of attaching the bristle waist adjustment member 20 to the flocked surface 15.
The thicker the thickness T1, the shorter the height H2 from the surface 23 of the top wall portion 22 to the tip of the hair bundle 16 (hereinafter sometimes referred to as adjusted hair length), and the fur becomes stiff. The thinner the thickness T1, the longer the adjusted hair length H2, and the lower the effect of stiffening the hair of the toothbrush 1 with a hair-and-lumbar adjusting member. That is, by changing the thickness T1, it is possible to change the bristle stiffness of the toothbrush 1 with the bristle waist adjustment member by changing the bristle length H2 after adjustment.

Next, a mounting method of the hair / lumbar adjusting member 20 of the present embodiment will be described with reference to FIG.
The bristle waist adjustment member 20 is operated in the X direction so that the distal end of the head portion 14 is inserted from the opening portion 21 while the opening portion 21 is applied to the distal end of the head portion 14 and the slit portion 32 is widened. When the hair waist adjusting member 20 is operated in the X direction, the top wall portion 22 is slid on the flocked surface 15, and the hair bundle 16 moves relatively in the widened slit portion 32, and the hairs lined up in the row direction. The bundle 16 is sequentially accommodated in the through hole 24, and the head portion 14 is inserted into the hair waist adjustment member 20. At this time, since the bristle and waist adjustment member 20 is made of a soft resin, it can pass between the hair bundles 16 arranged in the row direction while being deformed.
When all the hair bundles 16 are accommodated in the predetermined through holes 24, the slit portions 32 are closed. When the slit portion 32 is closed, the hair bundle 16 penetrates the through hole 24 as shown in FIG.

 According to the hair waist adjustment member 20 of the present embodiment, the hair height adjustment surface 20 can be attached to and detached from the flocked surface 15, and thus the adjusted hair length H <b> 2 by selecting the hair waist adjustment member 20 having a different thickness T <b> 1 of the top wall portion 22. The bristle stiffness of the toothbrush 1 with a bristle waist adjustment member can be adjusted. For this reason, the inside of the oral cavity can be appropriately cleaned only by changing the bristle waist adjustment member 20 according to the site to be cleaned and the state in the oral cavity without using a plurality of types of toothbrushes.

(Second embodiment)
A toothbrush with a bristle waist adjustment member according to a second embodiment of the present invention will be described with reference to FIGS. The same components as those in the first embodiment are denoted by the same reference numerals, description thereof is omitted, and differences from the first embodiment are mainly described.
The toothbrush 100 with a bristle and waist adjustment member in FIG. 3 includes a toothbrush 110 and a bristle and waist adjustment member 120.

 As shown in FIGS. 3B and 3C, a recess 118 extending in the X direction is formed on the back surface of the head portion 114. The concave stripe 118 gradually widens toward the flocked surface 15 and has a trapezoidal cross section perpendicular to the X direction.

As shown in FIGS. 3 to 4, the bristle and waist adjustment member 120 includes a top wall portion 122 in which the through hole 24 and the slit portion 32 are formed, a convex strip 128 having a shape corresponding to the shape of the concave strip 118, and a head portion. 114 is provided with a tip wall portion 126 that covers the tip of 114 and is connected to the top wall portion 122 and the ridge 128.
The thickness of the top wall portion 122 is the same as the thickness T1 of the top wall portion 22.

 According to the toothbrush 100 with the hair-and-lumbar adjustment member of the present embodiment, the ridge 118 and the ridge 128 are fitted when the hair-and-lumbar adjustment member 120 is operated in the X direction and attached to the flocked surface 15. The hair-and-lumbar adjustment member 120 is unlikely to be detached or displaced from the head portion 114 when cleaning the oral cavity.

(Third embodiment)
A toothbrush with a bristle waist adjustment member according to a third embodiment of the present invention will be described with reference to FIG. The same components as those in the first and second embodiments are denoted by the same reference numerals, description thereof is omitted, and differences from the first and second embodiments are mainly described.
The toothbrush 200 with a bristle waist adjustment member in FIG. 5 includes the toothbrush 10 and a bristle waist adjustment member 220.

The bristle waist adjustment member 220 is a plate-like member mounted on the flocked surface 15 and has a through hole 224 through which the hair bundle 16 penetrates when mounted on the flocked surface 15.
The through hole 224 gradually expands from the opening surface toward the flocked surface 15.
The thickness of the bristle waist adjustment member 220 is the same as the thickness T1 of the top wall 22.

A method of using the hair and waist adjustment member 220 of this embodiment will be described with reference to FIG.
The bristles adjusting member 221 is made to approach the flocked surface 15 from the front end side of the bristles 16, and each bristles 16 are inserted into the through holes 224 corresponding to the bristles. At this time, since the diameter of the through hole 224 gradually increases from the opening surface toward the flocked surface 15, the hair bundle 16 can be easily inserted into the through hole 224. Further, the hair and waist adjusting member 221 is operated to abut on the flocked surface 15 to mount the hair and waist adjusting member 220 on the flocked surface 15.

(Other embodiments)
The present invention is not limited to the embodiment described above.
The hair and waist adjustment members of the first to third embodiments shorten the hair length of all hair bundles, but the present invention is not limited to this, and the hair length of some hair bundles is shortened. You may do.

For example, like the bristle and waist adjustment member 320 used in the toothbrush 300 with the bristle and buckle adjustment member in FIG. As shown in FIGS. 6 to 7, the bristle and waist adjustment member 320 covers the region where the hair bundle 16 constituting the central row is implanted, and the hair constituting the other row formed across the central row. The top wall part 322 which does not cover the area | region where the bundle | flux 16 was planted, the protruding item | line 128, and the front-end | tip wall part 326 located in the front-end | tip of the head part 114 and connected to the top wall part 322 and the protruding item | line 128 are provided. Is.
According to the hair and waist adjustment member 320, only the hair and waist of the hair bundle 16 in the center row can be hardened.

Further, for example, the hair length adjustment member 420 used in the toothbrush 400 with a hair waist adjustment member in FIG. 8 may shorten the hair length of the three rows of hair bundles 16 on the tip side of the head portion 114. Good. As shown in FIGS. 8 to 9, the bristle and waist adjustment member 420 covers the region where the hair bundles 16 constituting the three rows on the distal end side of the head portion 114 are implanted, and the proximal end side of the head portion 114 (i.e., The top wall portion 422 that does not cover the region where the hair bundles 16 constituting the three rows on the handle portion 12 side) are planted, the ridge 428, and the top wall portion 422 and the ridge 428 located at the tip of the head portion 114. And a tip wall portion 426 connected to each other. The cross section of the ridge 428 has a shape corresponding to the cross section of the ridge 118, and the length thereof is equal to the length of the top wall portion 422.
According to the hair and waist adjustment member 420, only the hair and waist of the hair bundle 16 constituting the three rows on the tip side of the head portion 114 can be hardened.

In the first to third embodiments, the hair bundles are arranged in a grid pattern, but the present invention is not limited to this, and the hair bundles may be arranged in a staggered pattern.
In the first to third embodiments, the hair bundles are arranged in 6 rows and 3 columns. However, the present invention is not limited to this, and may be 5 rows or less, or 7 rows or more. Also, it may be 2 columns or less, or 4 columns or more.

 In the first to third embodiments, the head portion is rectangular in plan view, but the present invention is not limited to this, and the head portion may have any shape.

In 1st-3rd embodiment, although the through-hole of the cross-sectional shape of the hair | bristle bundle is substantially similar to the bristle waist adjustment member, this invention is not limited to this. For example, a through-hole 524 whose longitudinal direction is the sliding direction may be formed in the top wall 522, such as a bristle / lumbar adjustment member 520 attached to the toothbrush 500 with the fur / lumbar adjustment member shown in FIG. . By mounting the bristle waist adjustment member 520, when the toothbrush 500 with the bristle waist adjustment member is reciprocated in the X direction, the bristle bundle 16 functions as the normal bristle length, and in the width direction of the head portion 14. When reciprocated, the hair bundle 16 functions as the hair having the adjusted hair length.
Alternatively, the bristle and waist adjustment member may be a plate-like body that is detachably mounted between the hair bundles arranged in the row direction or between the hair bundles arranged in the row direction and in which no through hole is formed.

 In the first to second embodiments, the hair and waist adjustment member is slid in the length direction of the head portion and attached to the flocked surface, but the present invention is not limited to this and extends in the width direction of the head portion. A slit portion may be formed and slid in the width direction of the head portion and attached to the flocked surface.

 In the first embodiment, the hair and waist adjustment member includes a bottom wall portion, a side wall portion, and a tip wall portion, but the present invention is not limited to this, and the hair waist adjustment member includes a bottom wall portion, a side wall portion, and Not all or any of the tip wall portions may be provided.

 In 2nd embodiment, although the concave streak is formed in the back surface of a head part, this invention is not limited to this, The concave streak may be formed in the side surface and flocking surface of a head part.

 In the second embodiment, the concave streak gradually widens toward the flocked surface, and the convex streak has a shape corresponding to the concave streak, but the present invention is not limited to this, and the concave streak is the flocked surface. The ridges may have a shape that gradually decreases in width, and the ridges may have shapes corresponding thereto.

 In the second embodiment, the cross sections of the concave stripe and the convex stripe are trapezoidal, but the present invention is not limited to this, and it is sufficient that the concave stripe and the convex stripe can be fitted to each other. However, it may be a polygon other than a trapezoid, or may be a missing circle.

 In the second embodiment, the concave portion is formed on the head portion and the convex portion is formed on the bristle waist adjustment member. However, in the present invention, a member that fits to the head portion and the bristle waist adjustment member is formed. What is necessary is just to be formed, the protruding item | line may be formed in the head part, and the concave item | line may be formed in the bristle waist adjustment member.

 In the third embodiment, the through hole gradually increases in diameter toward the flocked surface, but the present invention is not limited to this. For example, the through hole gradually decreases in diameter toward the flocked surface. It may be the same diameter from the opening surface to the flocked surface. However, from the viewpoint of more easily mounting the bristle waist adjustment member to the flocked surface, it is preferable that the through hole gradually expands from the opening surface toward the flocked surface.

 In the third embodiment, the hair and waist adjustment member is made of a soft resin. However, the present invention is not limited to this, and in the third embodiment, the hair and waist adjustment member is made of a hard resin. Also good.

1, 100, 200, 300, 400, 500 Toothbrush with bristle and waist adjustment member 10, 110 Toothbrush 14 Head part 15 Flocked surface 16 Hair bundle 20, 120, 220, 320, 420, 520 Bristle and waist adjustment member 24, 224, 524 Through hole 25 Perimeter 32 Slit part 118 Concave 128, 428 Convex

Claims (6)

  A hair waist adjustment member for a toothbrush, which is detachably attached to a flocked surface of a head portion of a toothbrush and adjusts the height of a hair bundle.   The toothbrush according to claim 1, wherein a through-hole through which the hair bundle penetrates is formed when attached to the flocked surface, and a peripheral edge of an opening surface of the through-hole is in contact with a side surface of the hair bundle. Hair waist adjustment member.   The bristle waist adjustment member for a toothbrush according to claim 1 or 2, wherein the hair is slid on the flocked surface and attached to the flocked surface. It is slid on the flocked surface and attached to the flocked surface,
Two or more through holes are formed,
The bristle waist adjustment member for a toothbrush according to claim 2, wherein a slit portion extending in the sliding direction and communicating the through holes is formed.   A toothbrush with a bristle waist adjustment member, comprising the bristle waist adjustment member for a toothbrush according to any one of claims 1 to 4. A toothbrush with a bristle waist adjustment member provided with the bristle waist adjustment member for a toothbrush according to claim 3 or 4,
A concave line extending in the sliding direction is formed in the head part, and a convex line corresponding to the shape of the concave line is formed in the hair waist adjusting member, or the head part has the above-mentioned A toothbrush with a bristle waist adjustment member, characterized in that a ridge extending in a sliding direction is formed, and a concave line corresponding to the shape of the ridge is formed on the bristle waist adjustment member.

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