WO2017155039A1 - 歯ブラシ - Google Patents

歯ブラシ Download PDF

Info

Publication number
WO2017155039A1
WO2017155039A1 PCT/JP2017/009479 JP2017009479W WO2017155039A1 WO 2017155039 A1 WO2017155039 A1 WO 2017155039A1 JP 2017009479 W JP2017009479 W JP 2017009479W WO 2017155039 A1 WO2017155039 A1 WO 2017155039A1
Authority
WO
WIPO (PCT)
Prior art keywords
toothbrush
neck portion
head
neck
head portion
Prior art date
Application number
PCT/JP2017/009479
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
金丸　直史
誠一 亀井
Original Assignee
ライオン株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ライオン株式会社 filed Critical ライオン株式会社
Priority to CN201780016110.9A priority Critical patent/CN108697230B/zh
Priority to MYPI2018703111A priority patent/MY194154A/en
Priority to KR1020207025566A priority patent/KR102384895B1/ko
Priority to SG11201807604QA priority patent/SG11201807604QA/en
Priority to KR1020187021964A priority patent/KR102424854B1/ko
Priority to KR1020207025564A priority patent/KR102384894B1/ko
Publication of WO2017155039A1 publication Critical patent/WO2017155039A1/ja

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B5/00—Brush bodies; Handles integral with brushware
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B5/00—Brush bodies; Handles integral with brushware
    • A46B5/02—Brush bodies; Handles integral with brushware specially shaped for holding by the hand
    • A46B5/021—Grips or handles specially adapted to conform to the hand
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B9/00—Arrangements of the bristles in the brush body
    • A46B9/02—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
    • A46B9/04—Arranged like in or for toothbrushes
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B2200/00—Brushes characterized by their functions, uses or applications
    • A46B2200/10—For human or animal care
    • A46B2200/1066—Toothbrush for cleaning the teeth or dentures

Definitions

  • the present invention relates to a toothbrush.
  • This application claims priority based on Japanese Patent Application No. 2016-045368 filed in Japan on March 9, 2016 and Japanese Patent Application No. 2016-212030 filed in Japan on October 28, 2016. The contents are incorporated herein.
  • toothbrushes with a thin head are proposed from the viewpoint of operability in the oral cavity.
  • a resin having high strength such as polyacetal resin (POM) is used.
  • POM polyacetal resin
  • the flocking strength and the bending strength of the head portion may be insufficient.
  • the neck portion connecting the head portion and the handle portion is thick, the improvement in operability in the oral cavity due to the thin head portion may be impaired. It was found. In particular, when the neck is wide, the operability is further deteriorated, and the thinness of the head is not conspicuous in appearance and the impression of the product is also impaired. However, when the neck portion is made thin, it may be bent too much and conversely, a problem may occur in operability. Further improvement in strength is also required. In particular, when a general-purpose resin generally used for toothbrushes such as polypropylene (PP) is used, the problem is more remarkable.
  • PP polypropylene
  • One aspect of the present invention has been made in order to solve the above-described problems, and an object thereof is to provide a thin toothbrush with a head capable of obtaining good operability.
  • a toothbrush in order to achieve the above object, includes a flocked portion composed of a plurality of hair bundles, a head portion in which the flocked portion is provided on a flocked surface, and the head portion.
  • a toothbrush comprising a neck portion and a handle portion extending to the neck portion, wherein the head portion has a thickness of 2.0 mm or greater and 4.0 mm or less.
  • the small width and the minimum thickness are 3.0 mm or more and 4.5 mm or less, and the thickness direction center point of the handle portion at the gripping center position of the toothbrush and the thickness direction of the head portion at the center position of the flocked portion
  • An angle formed by a straight line connecting a center point and a plane constituting the flocked surface is 5.0 degrees or more and 10.0 degrees or less, and the thickness direction center point of the handle portion and the plane
  • the distance is 6.0 mm or more, 12.0 mm or less And characterized in that.
  • the bending elastic modulus of the constituent material of the neck portion may be 1000 MPa or more and 2200 MPa or less.
  • the constituent material of the neck portion may be a polypropylene resin.
  • FIGS. 1 and 2 show one aspect of the present invention, and does not limit the present invention, and can be arbitrarily changed within the scope of the technical idea of the present invention.
  • the scale, number, etc. of dimensions may be varied depending on the component.
  • FIG. 1 is a plan view of the toothbrush of the present embodiment.
  • FIG. 2 is a front view of the toothbrush.
  • the toothbrush 1 of the present embodiment includes a flocked portion 11, a head portion 12 provided with the flocked portion 11, and a neck portion 13 extending from the base end side of the head portion 12.
  • a handle portion 14 extending from the base end side of the neck portion 13. That is, the head portion 12, the neck portion 13, and the handle portion 14 are integrally formed.
  • a member in which the head portion 12, the neck portion 13, and the handle portion 14 are integrated is referred to as a handle body 15.
  • illustration of the hair transplant part 11 is abbreviate
  • the upper surface of the head portion 12 provided with the flocked portion 11 is referred to as a flocked surface 12a.
  • the plane P (virtual plane) constituting the flocked surface 12a is the XY plane
  • the direction in which the handle body 15 extends as a whole is the X-axis direction
  • the direction orthogonal to the X-axis is The Y-axis direction is assumed.
  • the normal direction of the plane P is taken as the Z-axis direction.
  • the dimension of each member in the Y-axis direction is referred to as the width of the member
  • the dimension of each member in the Z-axis direction is referred to as the thickness of the member
  • the dimension of each member in the X-axis direction is referred to as the length of the member. Called.
  • the handle body 15 is integrally formed in an elongated shape as a whole, and can be produced by, for example, injection molding using a resin as a material.
  • a resin as a material of the handle body 15
  • polypropylene (PP) polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polycyclohexylene dimethylene terephthalate (PCT), polyacetal (POM), polyethylene naphthalate (PEN), polystyrene ( PS), acrylonitrile / butadiene / styrene resin (ABS), cellulose propionate (CP), polyarylate, polycarbonate, acrylonitrile / styrene copolymer resin (AS), and the like.
  • resin materials such as POM, PBT, and PEN in terms of high strength and easy thinning of the head portion.
  • polypropylene is generally more versatile and easier to process and lower in cost than a resin such as polyacetal, but has a low bending elastic modulus.
  • the flexural modulus of polyacetal is about 2500 MPa
  • the flexural modulus of polypropylene is about 1500 to 2000 MPa. Therefore, conventionally, polypropylene is a material that is difficult to use as a material for a toothbrush with a thin head portion and a narrow neck portion.
  • a resin having a relatively low bending elastic modulus such as polypropylene can be used.
  • the bending elastic modulus of the constituent material of the handle body 15, particularly the neck portion 13, is 1000 MPa or more and 2200 MPa or less.
  • the bending elastic modulus is less than 1000 MPa, there is a possibility that sufficient strength cannot be obtained when the neck portion 13 is thinned.
  • the flexural modulus exceeds 2200 MPa, the hardness increases, but there is a possibility that it becomes brittle.
  • the above resins may be used alone or in combination of two or more resins.
  • the handle body 15 may be partially or entirely covered with a soft resin. Since part or all of the handle part 14 is covered with the soft resin, the fit feeling of the hand when the user grips the handle part 14 is improved, and the gripped fingers can be prevented from slipping.
  • the soft resin for example, a resin of Shore A 90 or less is preferable, and a resin of Shore A 10 to 40 is more preferable.
  • soft resins include elastomer resins such as polyolefin-based elastomers, styrene-based elastomers, polyester-based elastomers, polyurethane-based thermoplastic elastomers, and silicon.
  • the overall length of the handle body 15 can be determined with respect to operability and the like.
  • the overall length of the handle body 15 is, for example, about 100 to 200 mm.
  • the head portion 12 has a substantially rectangular flat plate shape in which four apexes are cut off by a curve in plan view.
  • a plurality of flocked holes 12h are provided on the flocked surface 12a which is the upper surface of the head portion 12.
  • the bristles 17 formed of a plurality of bristles 17 are formed by planting the bristles 17 in which the bristles are bundled into the flock holes 12h.
  • the distance d1 between the flocking hole 12h located on the most distal end side of the head portion 12 and the distal end of the head portion 12, and the flocking hole 12h located on the most proximal side of the head portion 12 and the head portion 12 The distance d2 to the base end is set equal.
  • a boundary position K1 between the neck portion 13 and the head portion 12, which will be described later, is a position away from the flock hole 12h located on the most proximal side of the head portion 12 toward the neck portion 13 by a distance equal to the distance d1. .
  • the dimensions of the head unit 12 are determined in consideration of characteristics such as intraoral operability. If the width of the head portion 12 is too large, the operability in the oral cavity is lowered. If the width is too small, the number of hair bundles 17 to be implanted becomes too small, and the cleaning effect tends to be impaired. For this reason, the width of the head portion 12 is set to about 5 mm to 16 mm, for example.
  • the length of the head portion 12 is set in a range of 10 mm to 33 mm, for example.
  • the shape of the flock hole 12h is not particularly limited, and may be a circle such as a perfect circle or an ellipse, or a polygon such as a triangle or a rectangle.
  • the number of the flock holes 12h is not particularly limited, and is set in the range of 10 to 60, for example.
  • the diameter of the flocked hole 12h is determined according to the thickness of the hair bundle 17, and is set in the range of 1 mm to 3 mm, for example.
  • the arrangement pattern of the flock holes 12h is not particularly limited, and may be any arrangement pattern such as a so-called lattice shape or zigzag shape.
  • the hair constituting the hair bundle 17 includes hair for which the diameter gradually decreases toward the tip (tapered hair), and hair for which the outer diameter is substantially the same except for the rounded portion of the tip (straight hair).
  • the material of the hair is, for example, polyamide such as 6-12 nylon and 6-10 nylon, polyester such as PET, PBT, polytrimethylene terephthalate (PTT), PEN, polybutylene naphthalate (PBN), and polyolefin such as PP.
  • Synthetic resin materials such as olefin elastomers and styrene elastomers can be used. These resin materials may be used individually by 1 type, and may be used in combination of 2 or more type.
  • the bristle may have a multi-core structure having a core part and at least one or more sheath parts provided outside the core part.
  • the cross-sectional contour of the hair is not particularly limited, and is, for example, a circle such as a perfect circle or an ellipse, a polygon such as a triangle, a rectangle, a pentagon, or a hexagon, a star, a three-leaf clover, or a four-leaf clover. Etc.
  • the hair bundle may be composed of all the hairs having the same thickness, or two or more hairs having different thicknesses may be combined.
  • the hair length is not particularly limited, and is set to, for example, 6 mm to 12 mm.
  • the center position is arranged on the side opposite to the flocked surface 12a (lower side than the handle portion 14 in FIG. 2).
  • a curved surface 14a having an arc contour with a convex surface on the flocked surface 12a is formed.
  • a curved surface 14b having an arc outline is formed with a center position opposite to the flocked surface 12a and convex toward the flocked surface 12a in a side view.
  • the center position is arranged on the flocked surface 12a side (above the handle portion 14 in FIG. 2), and the flocked surface 12a side is concave in a side view.
  • a contoured curved surface 13a is formed.
  • a curved surface 13b having an arc contour in which the center position is arranged on the flocked surface 12a side and the flocked surface 12a side is concave in a side view is formed. Yes.
  • the intersection angle between the tangent line and the flocked surface 12a in the side view changes continuously, but at the intersection between the curved surface 13a and the curved surface 14a. Intersects at an angle ⁇ 1 where the intersection angle between tangents is not 0 degrees or 180 degrees. Therefore, a ridge line K2 is formed at the intersection between the curved surface 13a and the curved surface 14a.
  • the crossing angle between the tangent and the flocked surface 12a in the side view continuously changes as the handle portion 14 proceeds in the length direction, but the intersecting portion between the curved surface 13b and the curved surface 14b.
  • the intersection angle between tangents intersects at an angle ⁇ 2 other than 0 degrees or 180 degrees. Therefore, a ridge line K3 is formed at the intersection of the curved surface 13b and the curved surface 14b.
  • the neck portion 13 and the handle portion 14 sandwich the ridgelines K2 and K3 and the curved surfaces 14a and 14b having arcuate contours in which one side in the length direction across the ridgelines K2 and K3 is convex in the side view when viewed from the side.
  • the other side in the length direction is connected to curved surfaces 13a and 13b having arcuate contours in which the flocked surface 12a side is concave as viewed from the side, thereby forming a substantially S-shape when viewed from the side.
  • the boundary on the rear end side of the neck portion 13 is defined by ridge lines K2 and K3. Therefore, the rear end side of the ridgelines K2 and K3 is a range where the handle portion 14 is arranged, and a range between the range where the head portion 12 is arranged and the range where the handle portion 14 is arranged.
  • the neck portion 13 is disposed on the front side.
  • the end portion on the flocked surface 12a side on the front end side of the handle portion 14 (the rear end side with respect to the ridge line K2) is a finger contact portion 19.
  • the user can stably operate the toothbrush 1 by holding the handle portion 14 so that the thumb rests on the finger rest portion 19.
  • the neck portion 13 connects the head portion 12 and the handle portion 14 together.
  • the neck portion 13 is the thinnest at a position slightly away from the boundary position K1 between the head portion 12 and the neck portion 13 (the tip of the neck portion 13) and closer to the handle portion 14, and has a small cross-sectional area. It is formed in a shape that extends to the rear end side while maintaining the area and gradually increases in diameter to the boundary K2 with the handle portion 14 on the rear end side.
  • the neck portion 13 gradually becomes thicker from the head portion 12 side toward the handle portion 14 side, so that the neck portion 13 can be bent even when the toothbrush 1 is used in various ways of gripping and polishing. Absorbed and excellent in usability.
  • the neck portion 13 is elastic and needs to bend appropriately.
  • the length of the neck portion 13 is preferably 25 mm to 70 mm so that the neck portion 13 touches the lips when the head portion 12 is inserted into the oral cavity.
  • the grip center position G1 of the toothbrush 1 is located on the handle portion 14.
  • the grip center position G1 is defined as a position 37 mm away from the ridge line K2 toward the rear end side of the handle portion 14.
  • the thickness direction center point G2 of the handle portion 14 at the grip center position G1 of the toothbrush 1 and the thickness direction center point S2 of the head portion 12 at the center position S1 of the flocked portion 11 Is a straight line N, the straight line N is located above the plane P (+ Z direction).
  • the handle body 15 has a bent shape so that the handle portion 14 having the grip center position G1 is positioned closer to the flocked portion 11 side than the flocked surface 12a of the head portion 12.
  • the inventors of the present invention make the head part thin and the neck part thin, and the head part and the neck part bend, and the flocked part is on the back side of the head part (see FIG. It has been found that it is easy to be displaced in the -Z-axis direction in the case of 2. Especially when brushing, if the neck part bends, the flocked part is displaced from the normal position to the back side of the head part (that is, away from the teeth and gums), and the force applied to the handle part is the flocked part. It becomes difficult to be transmitted sufficiently. As a result, it has been found that the operability of the handle portion is significantly lowered.
  • the handle portion 14 side of the handle body 15 is bent closer to the flocked portion 11 side than the plane P constituting the flocked surface 12a, like the above-described toothbrush 1 of the present embodiment, Furthermore, it has been conceived that if the parameters such as the angle ⁇ formed by the straight line N and the plane P are optimized, the deflection of the head portion 12 and the neck portion 13 can be offset by the bending of the handle body 15.
  • the toothbrush 1 of the present embodiment even when the head portion 12 and the neck portion 13 are bent when the head portion 12 is thin and the neck portion 13 is thin, the handle operability is favorably maintained. Therefore, the possible toothbrush 1 excellent in both intraoral operability and handle portion operability can be realized.
  • the thickness t of the head portion 12 can be determined in consideration of the constituent material of the handle body 15, the bending elastic modulus, and the like.
  • the thickness t of the head portion 12 is set in the range of 2.0 mm to 4.0 mm.
  • the thickness t of the head portion 12 is more preferably about 2.5 mm to 3.5 mm.
  • the minimum width W1 of the neck portion 13 is set to 3.0 mm to 4.5 mm.
  • the minimum width W1 of the neck portion 13 is more preferably about 3.5 mm to 4.3 mm.
  • the minimum thickness D1 of the neck portion 13 can be defined as the thickness of the neck portion 13 at a position where the width of the neck portion 13 is minimum in the X-axis direction. That is, in the toothbrush 1 of this embodiment, the shape of the cross section orthogonal to the extending direction of the neck portion 13 is substantially circular, and the position and thickness where the width of the neck portion 13 is minimum in the X-axis direction are minimum. Matches the position. However, the shape of the cross section orthogonal to the extending direction of the neck portion 13 is not necessarily circular, and may be, for example, a polygonal shape.
  • the shape of the cross section perpendicular to the extending direction of the neck portion 13 may be different depending on the position in the X-axis direction, and the position where the width of the neck portion 13 is minimum and the position where the thickness is minimum are not necessarily the same. It does not have to match.
  • the minimum thickness D1 of the neck portion 13 is smaller than the minimum width W1 of the neck portion 13, the operability in the oral cavity can be improved, but if it is too small, the strength of the neck portion 13 tends to be insufficient. Therefore, the minimum thickness D1 of the neck portion 13 can be determined in consideration of conditions such as the constituent material of the handle body 15 and the bending elastic modulus.
  • the minimum thickness D1 of the neck portion 13 is set to 3.0 mm to 4.5 mm.
  • the minimum thickness D1 of the neck portion 13 is more preferably about 3.5 mm to 4.3 mm.
  • the minimum diameter of the neck portion 13 is preferably 3.0 mm to 4.5 mm, and more preferably 3.5 mm to 4.3 mm.
  • the distance a between head base end and finger rest tip a The greater the distance a between the proximal end of the head portion 12 (boundary position K1 between the neck portion 13 and the head portion 12) and the distal end of the finger rest portion 19 (boundary K2 between the neck portion 13 and the handle portion 14), the greater the flocking. While the part 11 reaches the back of the oral cavity and can improve the cleaning effect to every corner of the oral cavity, the deflection of the neck 13 increases. On the other hand, the smaller the distance a is, the smaller the bending of the neck portion 13 can be, but it becomes difficult for the flocked portion 11 to reach the back of the oral cavity. Therefore, the distance a is set to about 25 mm to 70 mm, for example, although it depends on conditions such as the constituent material of the handle body 15 and the bending elastic modulus.
  • a straight line N connecting the thickness direction center point G2 of the handle portion 14 at the grip center position G1 of the toothbrush 1 and the thickness direction center point S2 of the head portion 12 at the center position S1 of the flocking portion 11 constitutes the flocked surface 12a.
  • an angle ⁇ formed by the plane P is referred to as a grip center point angle ⁇ .
  • the grip center point angle ⁇ is set to 5.0 degrees or more and 10.0 degrees or less.
  • the grip center point angle ⁇ is more preferably 6.0 degrees or more and 8.0 degrees or less.
  • a distance between the thickness direction center point G2 of the handle portion 14 at the grip center position G1 of the toothbrush 1 and the plane P constituting the flocked surface 12a is defined as a grip center point height h.
  • the gripping center point height h is set to 6.0 mm or more and 12.0 mm or less.
  • the grip center point height h is more preferably 7.0 mm or greater and 11.0 mm or less.
  • the deflection amount A of the head part is measured by the following method ( ⁇ ).
  • Method ( ⁇ ) The height of the tip of the handle body in a state in which the position of the boundary P1 between the head portion and the neck portion of the toothbrush is fixed with the flocked surface of the head portion facing upward is taken as the reference height. Further, with the position of the boundary P1 fixed, a weight of 200 g is suspended at a position of 10 ⁇ 3% from the tip of the flocked portion with respect to the length in the major axis direction of the flocked portion in the head portion for 10 seconds.
  • the amount of displacement (unit: mm) of the height of the rear end of the handle body from the reference height is defined as a deflection amount A of the head portion.
  • the “length in the major axis direction of the flocked portion” refers to the tip of the flocked hole located on the most distal side when the head portion is viewed in plan and the rear end of the flocked hole located on the most rear end side. Means distance.
  • the boundary P1 forms an end point of a curve at both edges that forms a corner cut from the neck portion in the head portion in plan view, that is, a corner cut. It is a position where the curve direction of the curve to be changed changes.
  • planar view means seeing a toothbrush from the flocked surface side of a head part.
  • the toothbrush 21 includes a head portion 22 that is substantially rectangular in plan view, a neck portion 24 that extends to the head portion 22, and a handle portion 26 that extends to the neck portion 24.
  • the head portion 22 is provided with a flocked portion (not shown).
  • the head portion 22, the neck portion 24, and the handle portion 26 are collectively referred to as a handle body 210.
  • the head portion 22 extends in the width direction from the tip 29 toward the neck portion 24, then extends in the same width, then narrows in the width direction, and reaches the boundary P ⁇ b> 1 with the neck portion 24.
  • the neck portion 24 extends from the boundary P1 toward the handle portion 26 with substantially the same diameter, and then expands to reach the boundary P2 with the handle portion 26.
  • the boundary P1 in the toothbrush 21 is the end point of the curve that forms both edges of the corner cut from the neck portion 24 in the plan view shape of the head portion 22, that is, the position where the bending direction of the curve that forms the corner cut changes. .
  • the boundary P1 between the head portion and the neck portion changes from a curve R1 in which the width forming the both corners of the head portion 22 in the plan view is narrowed to a straight line that forms both edges having the same width. Position.
  • the boundary P1 coincides with a position having the smallest width in the head portion and the neck portion in a plan view.
  • a position 17.5% from the tip 29 of the handle body 210 with respect to the length L1 (for example, a position 31.5 mm from the tip 29 of the handle body 210 when the length L1 is 180 mm). Let it be a boundary P1.
  • the width of the portion from the head portion of the neck portion is the same in plan view
  • the width is measured while gradually changing the position toward the head portion in the portion of the neck portion from the head portion, and the portion having the same width
  • the boundary position P1 is the position at which the width starts to increase.
  • the width of the portion from the head portion of the neck portion in the plan view becomes narrower as it approaches the head portion
  • the width of the portion of the neck portion from the head portion is gradually changed toward the head portion.
  • the position where the width is minimum is defined as the boundary P1.
  • the deflection amount A of the head part 22 is measured as follows. As shown in FIG. 4A, the toothbrush 21 is fixed by using the jig 2100 at the position of the neck portion most detailed (boundary P1) so that the flocked surface 220 faces in the vertical direction. At this time, the height of the tip 29 of the handle body 210 and the reference height H 0. Then, as shown in FIG. 4B, a weight 2102 200 g, suspended position of S, the handle body 210 height of the tip 29 of the post 10 seconds is measured, and the height and H 1. The S is a position of 10 ⁇ 3% from the tip of the flocked portion with respect to the length L4 (FIG. 3A) in the major axis direction of the flocked portion in the head portion 22.
  • the flocked portion is 19 mm
  • S is a position 2.0 mm from the tip of the flocked portion.
  • the absolute value of the difference between H 1 and H 0 is obtained as a (unit is mm).
  • the a is measured by, for example, a height gauge. The measurement is performed at room temperature 25 ⁇ 3 ° C. The measurement is performed five times, and the average value of the displacement amount a is defined as the deflection amount A of the head portion 22.
  • the deflection amount A is preferably 0.4 to 3.0, more preferably 0.4 to 2.5, and still more preferably 0.4 to 2.0.
  • the deflection amount A is preferably 0.5 to 3.0, more preferably 0.5 to 2.5, and further preferably 0.5 to 2.0.
  • the deflection amount A is adjusted by adjusting the bending elastic modulus of the material of the head part (that is, the material of the handle body), the thickness, width, etc. of the head part.
  • the amount of deflection B of the neck portion is measured by the following method ( ⁇ ).
  • Method ( ⁇ ) The height of the tip of the handle body in a state where the flocked surface of the head portion is directed vertically upward and the boundary position between the neck portion and the handle portion of the toothbrush is fixed is defined as the reference height. In the fixed state, a weight of 200 g is suspended at a position of 50 ⁇ 3% from the tip of the flocked portion with respect to the length in the major axis direction of the flocked portion in the head portion, and the tip of the handle body after 10 seconds is suspended.
  • a displacement amount (unit: mm) of the height from the reference height is defined as a deflection amount B of the neck portion.
  • the boundary P2 between the neck portion and the handle portion is an end point of the diameter expansion of the neck portion, that is, a curved line forming both ends of the straight line forming both edges of the widening portion or both edges of the widening portion in plan view. This is the position where the direction changes. If it is FIG. 3A, it is a position which changes from the straight line or curve R2 which forms the both edges of the part which the width
  • the boundary is P2.
  • the deflection amount B of the neck portion 24 in the toothbrush 21 is different from the method for measuring the deflection amount A of the head portion 22 except that the position where the toothbrush 21 is fixed by the jig 2100 and the position S where the weight 2102 is suspended are different. It is measured in the same manner as the head deflection amount A.
  • the position where the toothbrush 21 is fixed by the jig 2100 is the boundary P2.
  • S is a position of 50 ⁇ 3% from the tip of the flocked portion with respect to the length of the flocked portion in the long axis direction. For example, when the flocked portion is 19 mm, S is 9.5 mm from the tip.
  • the deflection amount B is preferably 2.1 to 5.0, more preferably 2.3 to 4.5, and even more preferably 2.5 to 4.0.
  • the neck portion is appropriately bent, an appropriate cushioning property is expressed, and the contact comfort of the flocked portion against the gum is further improved.
  • the amount of deflection B is equal to or greater than the lower limit, the hair can reach all corners of the oral cavity such as the back of the back teeth, and the cleaning power in the oral cavity is further enhanced. Furthermore, the penetration property of the hair to a periodontal pocket improves and the cleaning power of a periodontal pocket is improved more.
  • the bending amount B is adjusted by adjusting the bending elastic modulus of the neck portion material (that is, the handle body material), the minimum diameter of the neck portion, the cross-sectional shape of the boundary P2, and the like.
  • the product (A ⁇ B) of the deflection amount A of the head portion and the deflection amount B of the neck portion is 0.8 to 10, more preferably 1 to 10, still more preferably 1 to 6, and 1 to 3. 5 is more preferable. Further, (A ⁇ B) is preferably 2 to 10.
  • (A ⁇ B) is in the above range, an appropriate deflection in which the head portion 22 and the neck portion 24 cooperate is obtained. Thereby, when the hair transplantation part is slid with respect to the site
  • the lower limit of (A ⁇ B) is 0.8 or more, and preferably 1 or more. Moreover, 2 or more is preferable.
  • the upper limit of (A ⁇ B) is 10 or less, preferably 6 or less, and more preferably 3.5 or less.
  • the deflection amount A and the deflection amount B are preferably A ⁇ B.
  • a ⁇ B the operability of the toothbrush 21 is further enhanced.
  • the difference (BA) between the deflection amount A and the deflection amount B is preferably 1 or more, preferably 1.5 or more, and more preferably 2 or more.
  • (BA) is equal to or more than the lower limit value, the amount of bending of the neck portion 24 relative to the head portion 22 can be kept large, the cushioning property can be improved, and the comfort against the gingiva can be improved. It becomes easier to feel the massage effect.
  • (BA) is preferably 4 or less, more preferably 3 or less.
  • (BA) is preferably 1 to 4, and more preferably 1 to 3.
  • the ratio (B / A) of the deflection amount B and the deflection amount A is preferably 1.5 to 5.0, more preferably 1.8 to 4.8.
  • the handle portion 26 When the toothbrush 21 is used, the handle portion 26 is gripped.
  • the form in which the handle portion 26 is gripped is not particularly limited, and may be a palm grip type or a pen grip type.
  • the handle portion 26 is gripped by placing a thumb or the like near the boundary P2 at the rear end of the neck portion in any gripping form.
  • the head portion 22 is inserted into the oral cavity, and the flocked portion is slid to the site to be cleaned while pressing the handle portion 26.
  • the force applied to the handle portion 26 is transmitted to the head portion 22 through the neck portion 24, and further transmitted from the head portion 22 to the hair transplantation portion, so that the hair transplantation portion is cleaned while applying pressure to the site to be cleaned.
  • the product (A ⁇ B) of the deflection amount A of the head portion and the deflection amount B of the neck portion is 0.8 to 10
  • an appropriate deflection in which the head portion and the neck portion cooperate is obtained.
  • the bristles implanted in the head portion 22 of the toothbrush 21 can be easily delivered to every corner of the oral cavity such as the back of the back teeth, and the cleaning power in the oral cavity is enhanced.
  • the suppleness and cushioning properties of the flocked portion are improved, the contact feeling of the flocked portion with respect to the gingiva is improved, a good massage effect for the gingiva is obtained, and the feeling of use is enhanced.
  • toothbrushes of Examples 1 to 6 and Comparative Examples 1 and 2 were produced by an injection molding method.
  • the handle portion has the same width, length, thickness and shape.
  • Various resins described in Table 1 were injection molded to obtain an integrally molded product of the head portion, the neck portion, and the handle portion described in FIGS. 1 and 2.
  • the arrangement of the flocking holes was 3 holes ⁇ 1 row, 4 holes ⁇ 6 rows, 3 holes ⁇ 1 row from the tip of the head portion toward the neck portion.
  • the width and length of the head are shown in Table 1.
  • a toothbrush was prepared by implanting a bristles of taper hair (7.5 mils) made of PBT filaments into the head portion by flat wire type flocking.
  • the evaluation items for each sample include two items: intraoral operability and handle operability.
  • operability in the oral cavity “very good” is “ ⁇ ”, “excellent” is “ ⁇ ”, “somewhat inferior” is “ ⁇ ”, and “very inferior” was marked “x”.
  • steering wheel operability “very good” is “ ⁇ ”, “excellent” is “ ⁇ ”, “somewhat inferior” is “ ⁇ ”, and “very inferior” Is “ ⁇ ”.
  • both the grip center point angle ⁇ and the grip center point height h are outside the numerical range of the present invention. That is, the toothbrush of Comparative Example 1 has a shape in which the handle body is relatively close to a straight line. Therefore, it was confirmed that the toothbrush of the comparative example 1 is inferior in intraoral operability and handle operability. Further, in the toothbrush of Comparative Example 2, the head portion thickness t, the minimum neck portion width W1, and the minimum neck portion thickness D1 are out of the numerical range of the present invention. Therefore, it was confirmed that the toothbrush of the comparative example 2 is inferior in intraoral operability.
  • the head portion thickness t, the minimum neck portion width W1, the minimum neck portion thickness D1, the grip center point angle ⁇ , and the grip center point height h are all included.
  • the toothbrushes of Examples 1 to 6 are all included.
  • the toothbrushes of Examples 1 to 6 are excellent in both oral operability and handle operability even when the neck portion was bent.
  • the head portion is stressed by driving the flat wire. If the head is thin, the strength against deformation when force is applied is low, while the neck is thick and the strength is high, the stress when brushing teeth concentrates on the head, and the deflection of the head increases. Usability may be reduced. In this case, like the toothbrush 1 of this embodiment, by narrowing the neck and giving a certain degree of flexibility, the stress when brushing teeth can be distributed from the head to the entire neck, improving usability. To do. Therefore, in the case of flat wire type flocking, the effect of the present invention can be obtained particularly remarkably.

Landscapes

  • Brushes (AREA)
PCT/JP2017/009479 2016-03-09 2017-03-09 歯ブラシ WO2017155039A1 (ja)

Priority Applications (6)

Application Number Priority Date Filing Date Title
CN201780016110.9A CN108697230B (zh) 2016-03-09 2017-03-09 牙刷
MYPI2018703111A MY194154A (en) 2016-03-09 2017-03-09 Toothbrush
KR1020207025566A KR102384895B1 (ko) 2016-03-09 2017-03-09 칫솔
SG11201807604QA SG11201807604QA (en) 2016-03-09 2017-03-09 Toothbrush
KR1020187021964A KR102424854B1 (ko) 2016-03-09 2017-03-09 칫솔
KR1020207025564A KR102384894B1 (ko) 2016-03-09 2017-03-09 칫솔

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2016045368 2016-03-09
JP2016-045368 2016-03-09
JP2016-212030 2016-10-28
JP2016212030 2016-10-28

Publications (1)

Publication Number Publication Date
WO2017155039A1 true WO2017155039A1 (ja) 2017-09-14

Family

ID=59789574

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2017/009479 WO2017155039A1 (ja) 2016-03-09 2017-03-09 歯ブラシ

Country Status (6)

Country Link
KR (3) KR102424854B1 (zh)
CN (3) CN108697230B (zh)
MY (1) MY194154A (zh)
SG (4) SG10202008657QA (zh)
TW (1) TWI766856B (zh)
WO (1) WO2017155039A1 (zh)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020074983A (ja) * 2018-11-08 2020-05-21 ライオン株式会社 歯ブラシ
CN111343944A (zh) * 2017-11-30 2020-06-26 狮王株式会社 电动牙刷用替换刷和电动牙刷
US10925384B2 (en) 2018-04-16 2021-02-23 Colgate-Palmolive Company Oral care implement
JP2021078714A (ja) * 2019-11-19 2021-05-27 花王株式会社 歯ブラシ
WO2021131526A1 (ja) * 2019-12-23 2021-07-01 ライオン株式会社 歯ブラシ
WO2022137983A1 (ja) * 2020-12-24 2022-06-30 ライオン株式会社 歯ブラシ

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114025642A (zh) * 2019-06-28 2022-02-08 狮王株式会社 牙刷
KR20220052641A (ko) 2020-10-21 2022-04-28 김민혁 칫솔모 교체형 칫솔.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0633520U (ja) * 1992-10-09 1994-05-06 花王株式会社 歯ブラシ
JPH0866235A (ja) * 1994-08-26 1996-03-12 Kao Corp 歯ブラシ
JP2008154808A (ja) * 2006-12-25 2008-07-10 Lion Corp 歯ブラシ
JP2013118944A (ja) * 2011-12-07 2013-06-17 Lion Corp 歯ブラシ

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2598708Y2 (ja) * 1993-02-10 1999-08-16 ライオン株式会社 歯ブラシのハンドル
JP3387591B2 (ja) 1993-11-22 2003-03-17 ジョンソン・エンド・ジョンソン株式会社 歯ブラシ
JP3133654B2 (ja) 1995-09-19 2001-02-13 三洋電機株式会社 テレビジョン信号の形式判別回路
GB9626880D0 (en) * 1996-12-24 1997-02-12 Procter & Gamble A grooming implement
ATE237248T1 (de) * 1997-09-26 2003-05-15 Glaxosmithkline Consumer Healt Zahnbürste
EP0955837B2 (en) * 1997-11-12 2008-10-22 Gillette Canada Company Toothbrush
DE19816098A1 (de) * 1998-04-09 1999-10-14 Coronet Werke Gmbh Reinigungsbürste, insbesondere Zahnbürste
JP2000287753A (ja) 1999-04-05 2000-10-17 Lion Corp 歯ブラシ
JP2001211936A (ja) * 1999-11-25 2001-08-07 Johnson & Johnson Kk 歯清掃部材用の柄
CN2904767Y (zh) * 2006-05-26 2007-05-30 侯龙忠 新型牙刷
KR101313424B1 (ko) * 2007-02-02 2013-10-01 더 질레트 컴퍼니 가요성 요소를 구비하는 구강 위생 기구 및 그의 제조 방법
JP3133654U (ja) * 2007-05-08 2007-07-19 平 中島 歯ブラシ
KR101285998B1 (ko) * 2008-06-03 2013-07-15 콜게이트-파아므올리브캄파니 구강 건강관리 기구
JP5401154B2 (ja) * 2009-04-16 2014-01-29 ライオン株式会社 歯ブラシ及びその製造方法
JP5427486B2 (ja) 2009-06-24 2014-02-26 ライオン株式会社 歯ブラシ
CN104248213B (zh) * 2009-12-18 2016-05-18 高露洁-棕榄公司 具有多构件手柄的口腔护理器具
EP2363038A1 (de) * 2010-03-05 2011-09-07 Didar Almabekov Zahnbürste
JP5530776B2 (ja) * 2010-03-24 2014-06-25 ライオン株式会社 歯ブラシ
GB201104024D0 (en) * 2011-03-09 2011-04-20 Glaxosmithkline Consumer Healt Novel device
RU2618432C1 (ru) * 2013-03-28 2017-05-03 Колгейт-Палмолив Компани Устройство для ухода за полостью рта
JP2014217598A (ja) 2013-05-09 2014-11-20 ライオン株式会社 歯ブラシ
TWM483715U (zh) * 2013-07-26 2014-08-11 Hao-Bin Pu 保健牙刷
JP6364641B2 (ja) 2013-09-13 2018-08-01 ライオン株式会社 歯ブラシ
JP6170802B2 (ja) * 2013-10-02 2017-07-26 ライオン株式会社 歯ブラシ用のハンドル体及びその製造方法ならびに歯ブラシ
JPWO2015137487A1 (ja) 2014-03-14 2017-04-06 ライオン株式会社 歯ブラシ用ハンドル体、歯ブラシ、及び歯ブラシ用ハンドル体の製造方法
JP6552091B2 (ja) * 2015-06-19 2019-07-31 ライオン株式会社 歯ブラシハンドルおよび歯ブラシ

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0633520U (ja) * 1992-10-09 1994-05-06 花王株式会社 歯ブラシ
JPH0866235A (ja) * 1994-08-26 1996-03-12 Kao Corp 歯ブラシ
JP2008154808A (ja) * 2006-12-25 2008-07-10 Lion Corp 歯ブラシ
JP2013118944A (ja) * 2011-12-07 2013-06-17 Lion Corp 歯ブラシ

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111343944A (zh) * 2017-11-30 2020-06-26 狮王株式会社 电动牙刷用替换刷和电动牙刷
US10925384B2 (en) 2018-04-16 2021-02-23 Colgate-Palmolive Company Oral care implement
US11896117B2 (en) 2018-04-16 2024-02-13 Colgate-Palmolive Company Oral care implement
JP2020074983A (ja) * 2018-11-08 2020-05-21 ライオン株式会社 歯ブラシ
KR20210087428A (ko) 2018-11-08 2021-07-12 라이온 가부시키가이샤 칫솔
JP7190872B2 (ja) 2018-11-08 2022-12-16 ライオン株式会社 歯ブラシ
JP2021078714A (ja) * 2019-11-19 2021-05-27 花王株式会社 歯ブラシ
WO2021131526A1 (ja) * 2019-12-23 2021-07-01 ライオン株式会社 歯ブラシ
US20220400843A1 (en) * 2019-12-23 2022-12-22 Lion Corporation Toothbrush
WO2022137983A1 (ja) * 2020-12-24 2022-06-30 ライオン株式会社 歯ブラシ

Also Published As

Publication number Publication date
KR102424854B1 (ko) 2022-07-25
CN111387693B (zh) 2022-01-14
KR102384895B1 (ko) 2022-04-11
SG10202008662PA (en) 2020-10-29
MY194154A (en) 2022-11-16
CN111265000A (zh) 2020-06-12
KR20200106228A (ko) 2020-09-11
CN108697230A (zh) 2018-10-23
TW201731416A (zh) 2017-09-16
CN111387693A (zh) 2020-07-10
CN108697230B (zh) 2020-04-24
SG11201807604QA (en) 2018-10-30
CN111265000B (zh) 2021-10-29
KR102384894B1 (ko) 2022-04-11
SG10202008658SA (en) 2020-10-29
TWI766856B (zh) 2022-06-11
KR20180120143A (ko) 2018-11-05
KR20200106227A (ko) 2020-09-11
SG10202008657QA (en) 2020-10-29
TW202233094A (zh) 2022-09-01

Similar Documents

Publication Publication Date Title
WO2017155039A1 (ja) 歯ブラシ
WO2013085006A1 (ja) 歯ブラシ
CN110169647B (zh) 牙刷
WO2018079114A1 (ja) 歯ブラシ
JP2023026519A (ja) 歯ブラシ
WO2017155045A1 (ja) 歯ブラシ
TWI840807B (zh) 牙刷

Legal Events

Date Code Title Description
ENP Entry into the national phase

Ref document number: 20187021964

Country of ref document: KR

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 11201807604Q

Country of ref document: SG

NENP Non-entry into the national phase

Ref country code: DE

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17763379

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 17763379

Country of ref document: EP

Kind code of ref document: A1